CN216198475U - Engine front end wheel train and manual belt tensioning device thereof - Google Patents
Engine front end wheel train and manual belt tensioning device thereof Download PDFInfo
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- CN216198475U CN216198475U CN202122308038.3U CN202122308038U CN216198475U CN 216198475 U CN216198475 U CN 216198475U CN 202122308038 U CN202122308038 U CN 202122308038U CN 216198475 U CN216198475 U CN 216198475U
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Abstract
The utility model discloses an engine front end wheel train and a manual belt tensioning device thereof, wherein the manual belt tensioning device comprises a connecting plate and an installation shaft, the connecting plate is rotatably installed on the installation shaft, an installation boss is arranged on the connecting plate, a manual tensioning wheel is rotatably arranged on the installation boss, a ratchet wheel is rotatably installed on the installation plate and is fixedly connected to the connecting plate, and the manual belt tensioning device also comprises a ratchet wheel adjusting mechanism for adjusting the ratchet wheel. When the front end wheel train of the engine is maintained, the manual tension wheel rotates in a single direction towards the tensioning direction by utilizing the ratchet wheel single-direction rotation principle. Thereby reach and realize the tensioning under the condition of not becoming flexible installation axle, the user can conveniently carry out the tensioning to the belt of the front end train of engine, improves user's maintenance efficiency.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to an engine front end wheel train and a manual belt tensioning device thereof.
Background
At present, a plurality of logistics vehicles produced by a main engine plant can be changed into a refrigerator car according to the requirements of customers, and an air conditioner compressor is required to be added when the refrigerator car is changed into the refrigerator car. Meanwhile, with the continuous progress of the technology, more and more host factories put forward higher requirements on the arrangement of the front-end gear train of the engine, and the front-end gear train is required to be compact in structure and convenient to adjust, so that most of the front-end gear train is compact in arrangement at present. Because receive installation space's restriction, automatic take-up pulley can't install, needs to adopt manual take-up pulley. After the engine is used for a period of time, the belt of the front-end wheel train can extend, the front-end wheel train needs to be tensioned, and when the belt is tensioned or replaced by a common manual tensioning wheel, the fixing bolt of the manual tensioning wheel needs to be loosened firstly, and the fixing bolt of the manual tensioning wheel is fastened after the belt pulley is adjusted to a proper position. Not only need reserve the space of spanner like this, need repeatedly use the spanner to come the elasticity manual take-up pulley when the in-process belt of tensioning moreover. When the front-end wheel train of the engine is maintained, inconvenience is brought to operation of a user, and maintenance efficiency is low.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, a first technical problem to be solved by the present invention is to provide a manual belt tensioner, which can facilitate a user to tension a belt of a front end gear train of an engine when the front end gear train of the engine is maintained, thereby improving the maintenance efficiency of the user.
In order to solve the above technical problem, a manual belt tensioner of the present invention includes: the connecting plate is rotatably installed on the installation shaft, the connecting plate is provided with an installation boss, a manual tensioning wheel is rotatably arranged on the installation boss, a ratchet wheel is rotatably installed on the installation shaft, and the ratchet wheel is fixedly connected with the connecting plate and further comprises a ratchet wheel adjusting mechanism used for adjusting the ratchet wheel.
Furthermore, the manual belt tensioning device also comprises a connecting support attached to the connecting plate, the mounting shaft is fixedly connected with the connecting support, the connecting plate can rotate relative to the connecting support, the connecting support and the connecting plate jointly enclose an inner cavity, and the ratchet wheel is positioned in the inner cavity; ratchet adjustment mechanism includes the ratchet pole, the cover is equipped with compression spring on the ratchet pole, the one end of ratchet pole support lean on in the ratchet, the other end of ratchet pole stretches out the linking bridge outside is connected with adjusting nut.
Furthermore, the ratchet wheel is provided with a limiting connecting part, and the limiting connecting part is connected with the connecting plate in an adaptive mode.
Furthermore, the limiting connecting part is a hexagonal limiting protrusion, and a hexagonal connecting hole matched with the connecting plate is formed in the connecting plate.
Further, the mounting shaft is a bolt.
Based on a general inventive concept, a second technical problem to be solved by the present invention is to provide an engine front end wheel train, when the engine front end wheel train is maintained, a user can conveniently tension a belt of the engine front end wheel train, and the maintenance efficiency of the user is improved.
An engine front end train comprising: the first gear train comprises an annular first belt, wherein the inner side of the first belt sequentially rounds a crankshaft belt pulley, a generator belt pulley, an air conditioner compressor I belt pulley and a water pump belt pulley; the second gear train comprises an annular second belt, and the inner side of the second belt sequentially bypasses the water pump belt pulley and the air conditioner compressor II belt pulley; the second gear train further comprises the manual belt tensioning device, and the manual belt tensioning device is located on the outer side of the second belt.
Further, the first wheel train further comprises an automatic belt tensioning device, and the automatic belt tensioning device comprises an automatic tensioning wheel arranged on the outer side of the first belt.
Further, the first gear train further comprises a belt slip prevention device, wherein the belt slip prevention device comprises an idler pulley arranged on the outer side of the first belt.
Further, the water pump belt pulley includes first belt pulley and the second belt pulley that combines together, first belt is walked around first belt pulley, the second belt is walked around the second belt pulley, first belt is located the inboard of second belt.
Further, the first belt and the second belt are both multi-wedge belts; the first belt pulley and the second belt pulley are both multi-wedge belt pulleys.
After the technical scheme is adopted, the manual belt tensioning device has the advantages that the manual belt tensioning device comprises the connecting plate and the mounting shaft, the connecting plate is rotatably mounted on the mounting shaft, the mounting boss is arranged on the connecting plate, the manual tensioning wheel is rotatably arranged on the mounting boss, the ratchet wheel is rotatably mounted on the mounting plate and is fixedly connected to the connecting plate, and the manual belt tensioning device also comprises a ratchet wheel adjusting mechanism for adjusting the ratchet wheel. When the front end wheel train of the engine is maintained, the manual tension wheel rotates in a single direction towards the tensioning direction by utilizing the ratchet wheel single-direction rotation principle. Thereby reach and realize the tensioning under the condition of not becoming flexible installation axle, the user can conveniently carry out the tensioning to the belt of the front end train of engine, improves user's maintenance efficiency.
Drawings
FIG. 1 is a perspective view of an engine front end gear train of the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is a schematic structural view of the manual belt tensioner of the present invention;
FIG. 4 is an enlarged sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged perspective view of the connection plate of FIG. 3;
FIG. 6 is an enlarged perspective view of the ratchet of FIG. 3;
in the figure, 1, a crankshaft pulley; 2. an automatic tensioning wheel; 3. a generator belt pulley; 4. a manual belt tensioner; 41. a manual tension wheel; 42. a first dustproof cover; 43. a bearing; 44. pressing a plate; 45. a connecting bolt; 46. a connecting plate; 461. mounting a boss; 462. connecting holes; 47. a second dust cover; 48. installing a bolt; 49. connecting a bracket; 491. connecting lugs; 410. a ratchet wheel; 4101. a limiting bulge; 411. a ratchet rod; 412. a compression spring; 413. adjusting the nut; 5. a belt pulley of an air-conditioning compressor I; 6. an idler pulley; 7. a water pump pulley; 71. a first pulley; 72. a second pulley; 8. a belt pulley of an air conditioner compressor II; 9. a first belt; 10. a second belt; 11. a body; 12. and (7) mounting a bracket.
Detailed Description
The utility model is further described with reference to the following figures and examples.
As shown together with fig. 1 and 2, an engine front end train includes: a first train and a second train. The first gear train comprises an annular first belt 9, wherein the inner side of the first belt 9 sequentially rounds a crankshaft belt pulley 1, a generator belt pulley 3, an I belt pulley 5 of an air-conditioning compressor and a water pump belt pulley 7.
In order to ensure a sufficient tensioning of the first wheel system during the transfer and after the extension of the first belt 9, the first wheel system further comprises an automatic belt tensioning device comprising an automatic tensioning wheel 2 arranged outside the first belt 9.
In order to ensure that the first train does not shake and smoothly transmit power, the first train further includes a belt slip prevention device including an idler 6 disposed outside the first belt 9, the idler 6 preferably being a flat idler.
The second gear train comprises an annular second belt 10, and the inner side of the second belt 10 sequentially bypasses a water pump belt pulley 7 and an air conditioner compressor II belt pulley 8; the second train further comprises a manual belt tensioner 4, the manual belt tensioner 4 being located outside the second belt 10. The manual belt tensioner 4 provides sufficient tension to the second train to ensure the second train operates normally.
The water pump pulley 7 includes a first pulley 71 and a second pulley 72 coupled together, the first belt 9 is wound around the first pulley 71, the second belt 10 is wound around the second pulley 72, and the first belt 9 is located inside the second belt 10.
The first belt 9 and the second belt 10 are both multi-wedge belts; the first pulley 71 and the second pulley 72 are both multi-ribbed pulleys.
As shown together with fig. 1, 3, 4, 5 and 6, the manual belt tensioner 4 includes a mounting shaft, preferably, a bolt is used as the mounting shaft, i.e., the mounting bolt 48, a connecting plate 46 is rotatably mounted on the mounting bolt 48, a mounting boss 461 is provided on the connecting plate 46, a manual tension pulley 41 is rotatably provided on the mounting boss 461, the manual tension pulley 41 is rotatably mounted on the mounting boss 461 through a bearing 43, a first dust cap 42 and a second dust cap 47 are respectively provided at both ends of the bearing 43 for effectively preventing dust from entering, a pressing plate 44 is provided outside the manual tension pulley 41, and the pressing plate 44, the first dust cap 42, the second dust cap 47 and the mounting boss 461 of the connecting plate 46 are connected together by using a connecting bolt 45.
A ratchet wheel 410 is rotatably mounted on the mounting bolt 48, and the ratchet wheel 410 is fixedly connected to the connecting plate 46. Preferably, the ratchet 410 is provided with a limit connection part, which is a hexagonal limit projection 4101, and the connection plate 46 is provided with a hexagonal connection hole 462 matched with the limit connection part. This form of connection effectively prevents rotation of the ratchet 410 relative to the web 46.
The manual belt tensioner 4 further comprises a connecting bracket 49 abutting against the connecting plate 46, the mounting bolt 48 is fixedly connected with the connecting bracket 49 in a threaded connection mode, the connecting plate 46 can rotate relative to the connecting bracket 49, the connecting bracket 49 and the connecting plate 46 jointly enclose an inner cavity, and the ratchet 410 is located in the inner cavity.
The manual belt tensioner 4 further comprises a ratchet adjustment mechanism for adjusting the ratchet 410. The ratchet adjusting mechanism comprises a ratchet rod 411, a compression spring 412 is sleeved on the ratchet rod 411, one end of the ratchet rod 411 is abutted against the ratchet 410, and the other end of the ratchet rod 411 extends out of the outer side of the connecting support 49 and is connected with an adjusting nut 413. The ratchet rod 411 may include a large diameter section abutting against the ratchet 410 and having an outer circumferential surface on which the compression spring 412 is fitted, and a small diameter section protruding outside the coupling bracket 49 and coupled to the adjusting nut 413.
When the manual belt tensioner 4 is mounted on the body 11, the two coupling lugs 491 of the coupling bracket 49 are respectively coupled to the mounting brackets 12 on the body 11. As shown in fig. 1 and 4, the ratchet lever 411 is always in contact with the ratchet 410 by the urging force of the compression spring 412. When the ratchet 410 rotates clockwise, the ratchet 410 cannot rotate due to the restriction of the end of the ratchet rod 411. When the ratchet 410 rotates counterclockwise, the ratchet 410 may rotate as the compression spring 412 continues to compress.
When the second belt 10 needs to be tensioned, the connecting plate 46 is rotated, the ratchet wheel 410 rotates along with the connecting plate 46, and the ratchet wheel 410 rotates to a preset position to stop rotating, so that the purpose of tensioning the second belt 10 is achieved.
When it is necessary to replace the second strap 10, the adjustment nut 413 is rotated to continue the compression of the compression spring 412, thereby disengaging the ratchet 410 from the ratchet rod 411. The manual tension wheel 41 can rotate freely around the mounting bolt 48 without any external force, and the second belt 10 can be replaced smoothly.
The technical features (the first gear train, the second gear train, the first belt, the second belt, the first belt pulley, the second belt pulley, the first dust cover, the second dust cover, etc.) referred to in this specification are only for distinguishing the technical features, and do not represent the positional relationship, the installation sequence, the working sequence, etc. among the technical features.
In the description of the present specification, it is to be understood that the orientations or positional relationships described in the "inner cavity", "inner side", "outer side", and the like are based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. A manual belt tensioner, comprising: the connecting plate is rotatably installed on the installation shaft, the connecting plate is provided with an installation boss, a manual tensioning wheel is rotatably arranged on the installation boss, a ratchet wheel is rotatably installed on the installation shaft, and the ratchet wheel is fixedly connected with the connecting plate and further comprises a ratchet wheel adjusting mechanism used for adjusting the ratchet wheel.
2. The manual belt tensioner of claim 1, further comprising a connecting bracket abutting the connecting plate, the mounting shaft fixedly connected to the connecting bracket, the connecting plate rotatable relative to the connecting bracket, the connecting bracket and the connecting plate together defining an interior cavity, the ratchet wheel being located in the interior cavity; ratchet adjustment mechanism includes the ratchet pole, the cover is equipped with compression spring on the ratchet pole, the one end of ratchet pole support lean on in the ratchet, the other end of ratchet pole stretches out the linking bridge outside is connected with adjusting nut.
3. The manual belt tensioner of claim 1, wherein the ratchet wheel is provided with a limit connection portion, and the limit connection portion is connected with the connecting plate in a matching manner.
4. A manual belt tensioner according to claim 3, wherein said limit-connecting portion is a hexagonal limit projection, and said connecting plate is provided with a hexagonal connecting hole adapted thereto.
5. The manual belt tensioner of claim 1, wherein the mounting shaft is a bolt.
6. An engine front end train, comprising:
the first gear train comprises an annular first belt, wherein the inner side of the first belt sequentially rounds a crankshaft belt pulley, a generator belt pulley, an air conditioner compressor I belt pulley and a water pump belt pulley;
the second gear train comprises an annular second belt, and the inner side of the second belt sequentially bypasses the water pump belt pulley and the air conditioner compressor II belt pulley; the second train further comprising a manual belt tensioner as claimed in any one of claims 1 to 5 located outside the second belt.
7. The engine front end train of claim 6, wherein said first train further comprises an automatic belt tensioner, said automatic belt tensioner comprising an automatic tensioner disposed outside said first belt.
8. The engine front end train of claim 6, wherein the first train further comprises a belt slip prevention device comprising an idler pulley disposed outside the first belt.
9. The engine front end train of claim 6, wherein the water pump pulley includes a first pulley and a second pulley coupled together, the first belt being looped around the first pulley, the second belt being looped around the second pulley, the first belt being located inside the second belt.
10. The engine front end train of claim 9, wherein the first belt and the second belt are each a v-ribbed belt; the first belt pulley and the second belt pulley are both multi-wedge belt pulleys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308038.3U CN216198475U (en) | 2021-09-23 | 2021-09-23 | Engine front end wheel train and manual belt tensioning device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122308038.3U CN216198475U (en) | 2021-09-23 | 2021-09-23 | Engine front end wheel train and manual belt tensioning device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216198475U true CN216198475U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122308038.3U Active CN216198475U (en) | 2021-09-23 | 2021-09-23 | Engine front end wheel train and manual belt tensioning device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216198475U (en) |
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2021
- 2021-09-23 CN CN202122308038.3U patent/CN216198475U/en active Active
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