CN210238242U - Milling machine transmission system and milling machine - Google Patents
Milling machine transmission system and milling machine Download PDFInfo
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- CN210238242U CN210238242U CN201920925289.6U CN201920925289U CN210238242U CN 210238242 U CN210238242 U CN 210238242U CN 201920925289 U CN201920925289 U CN 201920925289U CN 210238242 U CN210238242 U CN 210238242U
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- belt
- tensioning
- milling machine
- transmission system
- electromagnetic valve
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Abstract
The utility model belongs to the milling machine field discloses a milling machine transmission system, including the belt, still include: a tensioner for tensioning the belt; the output end of the tensioning oil cylinder is connected to the tensioning wheel and can drive the tensioning wheel to rotate around a fixed point; the first electromagnetic valve is connected with the tensioning oil cylinder and used for controlling the stretching of the tensioning oil cylinder; and the displacement detector is used for monitoring the tension state and the motion state of the belt so as to control the reversing of the first electromagnetic valve. Through above-mentioned milling machine transmission system, can realize the automatically regulated of belt tension degree, can be according to the action of operating condition automatic control tensioning hydro-cylinder moreover, can effectively avoid belt tensioning not to arrive a series of incident that the position clutch just laminated and the tricycle is just lax and is produced not stop motion belt. Meanwhile, the reset limit position of the tension wheel can be automatically adjusted.
Description
Technical Field
The utility model relates to a milling machine field especially relates to a milling machine transmission system and milling machine.
Background
The milling machine, especially the large milling machine, is mainly suitable for large-area removal and stripping operations of diseases of expressways, asphalt pavements of various grades, airport runways, ports and wharfs and the like, and galling of cement pavements, and is indispensable large pavement maintenance equipment in modern mature pavement maintenance construction processes.
After a milling machine working device (a milling wheel) is started, a system can delay for a period of time (system setting), after a tensioning wheel is tensioned, a clutch is attached to drive a driving belt pulley to rotate, the driving belt pulley drives a driven belt pulley to rotate through a belt, and the driven belt pulley drives the working device to operate; the operating device is turned off and the tensioner returns to the predetermined position after the clutch is disengaged for a period of time (system set).
The prior transmission system has the following problems: when the working device is opened, the belt tensioning is not in place due to different working conditions, and the clutch is closed, so that a series of safety accidents can occur due to the fact that the belt is loosened through the driving belt pulley, the driven belt pulley, the tensioning pulley and the belt.
After the working device is closed, if the time delay set by the system is insufficient, the inertial motion of the milling wheel can be caused to drive the belt to rotate, and at the moment, if the tensioning wheel is reset and the adjustment of the limiting bolt (usually manual adjustment) is not appropriate, the belt and the belt cover are subjected to interference wear, and even the belt is separated from the belt groove to cause an accident.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a milling machine transmission system and milling machine, the tensioning condition that can the automatically regulated belt to belt emergence wearing and tearing when avoiding operating condition when belt tension is not enough or non-operating condition.
To achieve the purpose, the utility model adopts the following technical proposal:
a milling machine drive system, comprising a belt, further comprising:
a tensioner for tensioning the belt;
the output end of the tensioning oil cylinder is connected to the tensioning wheel and can drive the tensioning wheel to rotate around a fixed point;
the first electromagnetic valve is connected with the tensioning oil cylinder and used for controlling the stretching of the tensioning oil cylinder;
and the displacement detector is used for monitoring the tension state and the motion state of the belt so as to control the reversing of the first electromagnetic valve.
Preferably, a displacement sensor is arranged on the tensioning oil cylinder and used for detecting the displacement of the tensioning oil cylinder.
Preferably, the tensioning device further comprises an alarm device, and when the displacement sensor detects that the extended displacement of the tensioning oil cylinder reaches a preset value, the alarm device gives an alarm.
Preferably, the first electromagnetic valve is further communicated with a stop valve, and the stop valve is used for controlling the on-off of an oil path where the first electromagnetic valve is located.
Preferably, the displacement detector further comprises a belt cover, and the displacement detector is mounted on the belt cover.
Preferably, the belt cover further comprises a driven pulley, the belt is sleeved on the driven pulley, and the displacement detector is mounted on the position, close to the driven pulley, of the belt cover.
Preferably, the belt conveyor further comprises a clutch and a driving belt pulley driven by the clutch to rotate, wherein the belt is sleeved on the driving belt pulley and is driven by the driving belt pulley to rotate.
Preferably, the hydraulic control system comprises a clutch oil cylinder for driving the clutch to close, and a second electromagnetic valve is connected to the clutch oil cylinder and used for controlling the clutch oil cylinder to extend and retract.
Preferably, the milling machine further comprises a limiting block mounted on the frame of the milling machine, and the limiting block is used for limiting the limit position of the loosened belt.
The utility model also provides a milling machine, including foretell milling machine transmission system.
The utility model has the advantages that: monitoring whether the belt is tensioned in place and whether the belt moves or not in real time through a displacement detector, when a working device of the milling machine works, firstly, switching on a channel of a first electromagnetic valve, controlling a tensioning oil cylinder to drive a tensioning wheel to tension the belt to a required position, and after the displacement detector monitors that the belt is tensioned in place, powering off the first electromagnetic valve and fixing the position of the tensioning wheel; when the working device of the milling machine is closed, after the displacement detector detects that the belt stops moving, the other channel of the first electromagnetic valve is communicated, the tensioning oil cylinder is controlled to move reversely to drive the tensioning wheel to move towards the loosening direction until the displacement detector detects that the belt is loosened to the preset position, and the first electromagnetic valve is powered off, so that the tensioning wheel is automatically locked at the specific position.
Through above-mentioned milling machine transmission system, can realize the automatically regulated of belt tension degree, can be according to the action of operating condition automatic control tensioning hydro-cylinder moreover, can effectively avoid belt tensioning not to arrive a series of incident that the position clutch just laminated and the tricycle is just lax and is produced not stop motion belt. Meanwhile, the reset limit position of the tensioning wheel can be automatically adjusted, and the problems of belt abrasion and groove separation caused by manual misoperation are avoided.
Drawings
Fig. 1 is a schematic structural diagram of a milling machine transmission system of the present invention;
fig. 2 is a schematic diagram of the first solenoid valve and the second solenoid valve of the milling machine transmission system of the present invention.
In the figure:
1. a belt; 2. a tension wheel; 3. tensioning the oil cylinder; 4. a first solenoid valve; 5. a displacement detector; 6. a stop valve; 7. a driven pulley; 8. a drive pulley; 9. a clutch; 10. a clutch cylinder; 11. a second solenoid valve.
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 related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The utility model provides a milling machine transmission system, as shown in fig. 1 and fig. 2, this milling machine transmission system includes belt 1, take-up pulley 2, tensioning hydro-cylinder 3, first solenoid valve 4, displacement detector 5, belt cover, stop valve 6, driven pulley 7, drive pulley 8, clutch 9, clutch hydro-cylinder 10 and second solenoid valve 11, wherein:
the clutch 9 is connected to the power input device through a coupler, the driving belt pulley 8 is connected with the clutch 9, and when the clutch 9 is attached, the driving belt pulley 8 can be driven to rotate. The driven pulley 7 is connected with the driving pulley 8 through the belt 1, so that the driven pulley 7 can be driven by the driving pulley 8 to rotate. The belt cover is covered on the belt 1 to protect the belt 1 and prevent the belt 1 from separating from the belt groove.
The tensioning wheel 2 is used for tensioning the belt 1, one end of the tensioning wheel 2 is rotatably connected to the frame of the milling machine, the middle position of the tensioning wheel is connected to the output end of the tensioning oil cylinder 3, and the tensioning wheel 2 can be driven to rotate through the tensioning oil cylinder 3 so as to tension the belt 1.
The displacement detector 5 is mounted on a position, close to the driven pulley 7, of the belt cover and used for monitoring the tensioning state and the motion state of the belt 1, transmitting the tensioning state and the motion state of the belt 1 to the milling machine control system, and controlling the stretching of the tensioning oil cylinder 3 by the milling machine control system so as to control the tensioning degree of the belt 1. The displacement sensor 5 is a conventional structure, and may be configured to monitor the tension state and the motion state of the belt 1.
In this embodiment, the first electromagnetic valve 4 is connected to the tensioning cylinder 3, and is capable of controlling the tensioning cylinder 3 to extend or retract, specifically, the tensioning cylinder 3 is extended or retracted by switching on the first electromagnetic valve 4, and the tensioning cylinder 3 stops moving by power loss of the first electromagnetic valve 4. In the present embodiment, as shown in fig. 2, the first solenoid valve 4 has two passages, a first passage of which is communicated with the tensioning cylinder 3 to extend the tensioning cylinder 3, and a second passage of which is communicated with the tensioning cylinder 3 to retract the tensioning cylinder 3.
Furthermore, in this embodiment, the first electromagnetic valve 4 is further connected to a stop valve 6, and the stop valve 6 can control the on/off of the oil path where the first electromagnetic valve 4 is located, so that the tensioning cylinder 3 communicated with the first electromagnetic valve 4 is fixed to be self-locked at a certain position.
A second electromagnetic valve 11 is connected to the clutch cylinder 10, and the second electromagnetic valve 11 controls the clutch cylinder 10 to extend and contract so that the clutch cylinder 10 drives the clutch 9 to be engaged and disengaged. Preferably, a stop valve 6 may be connected to the second electromagnetic valve 11, and the stop valve 6 controls the on/off of the oil path in which the second electromagnetic valve 11 is located.
The concrete working principle of the milling machine transmission system of the embodiment is as follows:
when a working device (namely a milling wheel) of the milling machine is started, firstly, a first access of a stop valve 6 and a first electromagnetic valve 4 is communicated, at the moment, an oil charge of a tensioning oil cylinder 3 extends out, a tensioning wheel 2 is driven to move towards the tensioning direction of a belt 1, the belt 1 is driven to be tensioned, meanwhile, a displacement detector 5 monitors the position of the belt 1 in real time, after the situation that the belt 1 reaches a required tensioning position is monitored, the displacement detector 5 sends a signal to a control system, the control system controls a second electromagnetic valve 11 to be communicated, at the moment, a clutch oil cylinder 10 extends out, a clutch 9 is attached, at the moment, the working device starts to work through transmission of the clutch 9, a driving belt pulley 8, the belt 1 and a driven belt pulley 7.
When the working device is closed, the second electromagnetic valve 11 is de-energized, the clutch oil cylinder 10 retracts and enables the clutch 9 to be separated, power input is interrupted, the driving belt pulley 8, the belt 1, the driven belt pulley 7 and the tensioning wheel 2 gradually stop moving at the moment, when the displacement detector 5 detects that the belt 1 stops moving, the other passage of the first electromagnetic valve 4 is connected, the tensioning oil cylinder 3 retracts and drives the tensioning wheel 2 to move towards the direction that the belt 1 is loosened at the moment, when the displacement detector 5 detects that the belt 1 is loosened to the preset position, the first electromagnetic valve 4 is de-energized, the stop valve 6 is switched off, and the tensioning oil cylinder 3 stops moving so as to automatically lock the tensioning wheel 2 at the specific position. In the present embodiment, the locking position of the tension pulley 2 can be automatically adjusted by controlling the displacement of the tension cylinder 3 according to the amount of deformation of the belt 1 within a reasonable range after long-term use.
In addition, in the milling machine transmission system of the embodiment, when the working device start button of the double-click milling machine is pressed, in the working state, the second electromagnetic valve 11 is powered off, the clutch 9 is in the separation state, and the running condition of the belt 1 can be directly checked at the moment; under the non-working state, the first passage of the first electromagnetic valve 4 is communicated, and the belt 1 is tensioned, so that the real-time tensioning state of the belt 1 can be checked conveniently when the whole machine is off-line checked or after-sales service is carried out, and the debugging and fault detection work can be carried out by matching with related personnel.
In this embodiment, further, a displacement sensor (not shown in the figure) may be further disposed on the tensioning cylinder 3, and the displacement sensor is configured to detect a displacement of the tensioning cylinder 3. The stretching displacement of the tensioning oil cylinder 3 when tensioning the belt 1 is detected through the displacement sensor, and then the control system can convert the stretching displacement into the stretching amount of the belt 1 so as to record the stretching condition of the belt 1 in real time and cooperate with an alarm device to control the alarm device to give an alarm when the limit state is reached.
The milling machine transmission system of the present embodiment further includes a limiting block (not shown) mounted on the frame of the milling machine, and the limiting block is used for limiting the limit position of the belt 1 after being loosened. The tensioning oil cylinder is mainly used for limiting the position of the belt 1 through the limiting block when the belt 1 is loosened under the special conditions that the tensioning oil cylinder 3 breaks down and the like, so that safety accidents are avoided.
The utility model also provides a milling machine, including foretell milling machine transmission system, through this milling machine transmission system, can realize the automatically regulated of 1 rate of tension of belt, can effectively avoid 1 tensioning of belt not in place clutch 9 just to laminate and a series of incident that the tricycle is just lax and is produced of not bring stop motion belt 1 according to the action of operating condition automatic control tensioning hydro-cylinder 3 moreover.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A milling machine transmission system comprises a belt (1), and is characterized by further comprising:
a tensioner (2) for tensioning the belt (1);
the output end of the tensioning oil cylinder (3) is connected to the tensioning wheel (2) and can drive the tensioning wheel (2) to rotate around a fixed point;
the first electromagnetic valve (4) is connected with the tensioning oil cylinder (3) and is used for controlling the stretching of the tensioning oil cylinder (3);
and the displacement detector (5) is used for monitoring the tension state and the motion state of the belt (1) so as to control the reversing of the first electromagnetic valve (4).
2. The milling machine drive system according to claim 1, characterized in that a displacement sensor is provided on the tensioning cylinder (3) for detecting a displacement of the tensioning cylinder (3).
3. The milling machine transmission system according to claim 2, characterized in that it further comprises an alarm device which alarms when the displacement sensor detects that the extended displacement of the tensioning cylinder (3) reaches a preset value.
4. The milling machine transmission system according to claim 1, characterized in that the first electromagnetic valve (4) is further communicated with a stop valve (6), and the stop valve (6) is used for controlling the on-off of an oil path where the first electromagnetic valve (4) is located.
5. The milling machine drive train according to claim 1, further comprising a belt cover, the displacement detector (5) being mounted on the belt cover.
6. The milling machine transmission system according to claim 5, characterized by further comprising a driven pulley (7), wherein the belt (1) is sleeved on the driven pulley (7), and the displacement detector (5) is mounted on the belt cover at a position close to the driven pulley (7).
7. The milling machine transmission system according to claim 1, further comprising a clutch (9) and a driving pulley (8) driven by the clutch (9) to rotate, wherein the belt (1) is sleeved on the driving pulley (8) and is driven by the driving pulley (8) to rotate.
8. The milling machine transmission system according to claim 7, characterized by further comprising a clutch cylinder (10) driving the clutch (9) to be closed, wherein a second electromagnetic valve (11) is connected to the clutch cylinder (10), and the second electromagnetic valve (11) is used for controlling the clutch cylinder (10) to extend and retract.
9. The milling machine transmission system according to claim 1, characterized by further comprising a limit block mounted on the machine frame of the milling machine for defining an extreme position of the belt (1) after it has been slackened.
10. A milling machine, comprising the milling machine drivetrain of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920925289.6U CN210238242U (en) | 2019-06-19 | 2019-06-19 | Milling machine transmission system and milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920925289.6U CN210238242U (en) | 2019-06-19 | 2019-06-19 | Milling machine transmission system and milling machine |
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| Publication Number | Publication Date |
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| CN210238242U true CN210238242U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920925289.6U Active CN210238242U (en) | 2019-06-19 | 2019-06-19 | Milling machine transmission system and milling machine |
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| CN (1) | CN210238242U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431102A (en) * | 2020-10-28 | 2021-03-02 | 三一汽车制造有限公司 | Milling machine transmission detection system, milling machine and milling machine transmission detection method |
| CN112945114A (en) * | 2021-01-15 | 2021-06-11 | 东风柳州汽车有限公司 | Belt elasticity detection mechanism and car |
| CN113911888A (en) * | 2021-10-29 | 2022-01-11 | 上海爱登堡电梯集团股份有限公司 | Escalator with handrail belt over-extension monitoring device |
-
2019
- 2019-06-19 CN CN201920925289.6U patent/CN210238242U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431102A (en) * | 2020-10-28 | 2021-03-02 | 三一汽车制造有限公司 | Milling machine transmission detection system, milling machine and milling machine transmission detection method |
| CN112945114A (en) * | 2021-01-15 | 2021-06-11 | 东风柳州汽车有限公司 | Belt elasticity detection mechanism and car |
| CN113911888A (en) * | 2021-10-29 | 2022-01-11 | 上海爱登堡电梯集团股份有限公司 | Escalator with handrail belt over-extension monitoring device |
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