CN218267065U - Power transmission assembly and working machine - Google Patents
Power transmission assembly and working machine Download PDFInfo
- Publication number
- CN218267065U CN218267065U CN202222294680.5U CN202222294680U CN218267065U CN 218267065 U CN218267065 U CN 218267065U CN 202222294680 U CN202222294680 U CN 202222294680U CN 218267065 U CN218267065 U CN 218267065U
- Authority
- CN
- China
- Prior art keywords
- tensioning
- power transmission
- belt
- tensioner
- failure detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a power transmission equipment technical field provides a power transmission subassembly and operation machinery. The power transmission assembly comprises a compressor, an engine, a transmission belt, a tensioning device and a failure detection device. The engine is connected with the compressor through a transmission belt. The tensioner is supported to one side of the belt. The tensioner is telescopically movable to adjust the tension of the drive belt. A failure detection device is mounted to the other side of the belt, the failure detection device being configured to detect an extreme tension position of the tensioner to determine a failure condition of the belt. With this structural arrangement, the failure detection means can detect whether the tensioner is moved to the limit tensioning position. An operator can determine whether the transmission belt is in a failure state based on the detection result of the failure detection means. From this, operating personnel can in time discover and change the drive belt that became invalid, and then, improved power transmission assembly's power transmission stability and security.
Description
Technical Field
The utility model relates to a power transmission equipment technical field especially relates to a power transmission assembly and operation machinery.
Background
In an air-conditioning refrigeration system for a working machine, an air-conditioning compressor is generally used to compress and drive a refrigerant. An engine of the work machine is connected to the compressor by a belt to transmit power to the compressor. During power transmission, the belt may be loosened. In order to ensure stability and safety of power transmission, a belt tensioner is generally provided. When the belt is loosened, the belt can be in a tensioning state by adjusting the working state of the belt tensioning device. When the length of the belt is loosened and increased to the maximum effective length, the tensioning device cannot tension and adjust the belt, and only a new belt can be replaced. In the existing power transmission assembly, a belt failure detection device is not provided usually, and an operator cannot determine the failure state of the belt easily. In the use process, if the failure belt is not replaced in time, the stability and the safety of power transmission are affected.
SUMMERY OF THE UTILITY MODEL
The utility model provides a power transmission subassembly and operation machinery for solve current power transmission subassembly and do not have belt failure detection device, operating personnel is difficult to judge the failure state of belt, and then influences the problem of power transmission's stability and security.
According to the utility model discloses a first aspect provides a power transmission subassembly, include: compressor, engine, drive belt, overspeed device tensioner and failure detection device.
Wherein the engine is connected with the compressor through the transmission belt. The tensioner is supported to one side of the belt. The tensioning device is telescopically movable to adjust the tension of the drive belt. The failure detection device is mounted to the other side of the drive belt. The failure detection device is used for detecting the ultimate tensioning position of the tensioning device so as to determine the failure state of the transmission belt.
According to the utility model provides a pair of power transmission assembly, overspeed device tensioner includes tensioning cylinder, take-up pulley and pressure sensor.
The tensioning oil cylinder is connected with the tensioning wheel. The tension wheel is supported to the inner side of the transmission belt. The tensioning oil cylinder drives the tensioning wheel to move so as to adjust the tensioning force of the transmission belt. The pressure sensor is mounted between the tension pulley and the drive belt. The pressure sensor is used for detecting the tension of the transmission belt.
According to the utility model provides a pair of power transmission assembly, power transmission assembly still includes controlling means. The control device is electrically connected with the pressure sensor and the tensioning oil cylinder. The control device is used for controlling the working state of the tensioning oil cylinder based on the detection result of the pressure sensor.
According to the utility model provides a pair of power transmission assembly, the inefficacy detection device includes travel switch and base. The travel switch is connected with the base. The base is used for mounting the travel switch to the tensioning device at an extreme tensioning position. The tensioning device is adapted to the installation position of the travel switch in order to trigger the travel switch in the state in which the tensioning device is extended to the extreme tensioning position.
According to the utility model provides a pair of power transmission assembly, travel switch includes body and contact. The body is connected with the base. The contact is connected with the tension wheel. The contact is adapted to the mounting position of the body so that the contact is in contact with the body in a state where the tensioner is extended to an extreme tensioning position.
According to the utility model provides a pair of power transmission assembly, failure detection device still includes alarm device. The control device is connected with the alarm device and the travel switch. The control device is used for controlling the working state of the alarm device based on the detection result of the travel switch.
According to the utility model provides a pair of power transmission assembly, the inefficacy detection device still includes flexible bracing piece. The base is mounted to an end of the telescopic support rod. The telescopic supporting rod is used for adjusting the supporting and connecting positions of the base and the travel switch.
According to the utility model provides a pair of power transmission assembly, power transmission assembly still includes the frame. The compressor and the engine are mounted to the frame.
According to the utility model provides a pair of power transmission assembly, alarm device includes alarm lamp and/or alarm bell.
According to a second aspect of the present invention, there is provided a work machine comprising a power transmission assembly as described above.
The utility model provides an among the power transmission assembly, the engine passes through the drive belt and is connected with the compressor to transmit power to the compressor. For example, the tensioning device is supported to the inside of the drive belt. The failure detection device is disposed on the outside of the drive belt. When the transmission belt is loosened, the tensioning device can support the transmission belt to a tensioning state by adjusting the stretching state of the tensioning device. Furthermore, the failure detection device is used to detect the extreme tensioning position of the tensioning device. Wherein the extreme tensioning position of the tensioning device corresponds to a failure state of the drive belt. That is, when the tensioner is moved to an extreme tensioning position, it indicates that the drive belt has been in a failure state. Therefore, an operator can judge whether the tensioning device is at the limit tensioning position or not based on the detection result of the failure detection device, and further can determine whether the transmission belt is in a failure state or not.
Through the structure, the tensioning device and the failure detection device are respectively arranged on the inner side and the outer side of the transmission belt. The failure detection means is capable of detecting whether the tensioner is moved to the limit tensioning position. An operator can determine whether the transmission belt is in a failure state based on the detection result of the failure detection means. From this, operating personnel can in time discover and change the drive belt that became invalid, and then, improved power transmission assembly's power transmission stability and security.
Further, since the work machine includes the power transmission assembly as described above, it also has the advantages as described above.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power transmission assembly provided by the present invention;
reference numerals are as follows:
100. a compressor; 200. an engine; 300. a transmission belt; 400. a tensioning device; 401. tensioning the oil cylinder; 402. a tension wheel; 403. a pressure sensor; 500. a failure detection device; 501. a travel switch; 502. a base; 503. a telescopic support rod; 600. an alarm device; 700. and a frame.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments and for simplicity of description, but 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 therefore should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood as specific cases to those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, without mutual contradiction, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification to make the objects, technical solutions, and advantages of the embodiments of the present invention clearer, and the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A power transmission assembly and a working machine according to an embodiment of the present invention will be described with reference to fig. 1. It should be understood that the following description is only exemplary of the present invention, and is not intended to limit the present invention in any way.
An embodiment of the first aspect of the present invention provides a power transmission assembly, as shown in fig. 1, the power transmission assembly includes: compressor 100, engine 200, drive belt 300, tensioner 400 and failure detection device 500,
In the power transmission assembly provided in the present invention, the engine 200 is connected to the compressor 100 through the driving belt 300 to transmit power to the compressor 100. For example, tensioner 400 is supported to the inside of belt 300. The failure detection device 500 is disposed outside the transmission belt 300. When the belt 300 is loosened, the tensioner 400 can support the belt 300 in a tensioned state by adjusting the telescopic state of the tensioner 400. Further, the failure detection means 500 is used to detect the extreme tension position of the tensioner 400. Wherein the extreme tensioning position of tensioner 400 corresponds to a failure condition of drive belt 300. That is, when tensioner 400 moves to an extreme tensioning position, it indicates that drive belt 300 has been in a failure state. Thus, the operator can determine whether or not the tensioner 400 is at the extreme tensioning position based on the detection result of the failure detection means 500, and can determine whether or not the transmission belt 300 is in a failed state.
With this arrangement, the tensioner 400 and the failure detection device 500 are provided on the inner and outer sides of the transmission belt 300, respectively. The failure detection means 500 can detect whether the tensioner 400 is moved to the extreme tensioning position. An operator can determine whether the transmission belt 300 is in a failure state based on the detection result of the failure detection means 500. From this, operating personnel can in time discover and change drive belt 300 that became invalid, and then, improved power transmission assembly's power transmission stability and security.
For example, the drive belt 300 includes a belt. The belts of various types correspond to respective maximum effective lengths, that is, the belts of various types correspond to respective failure lengths. Different failure lengths correspond to different extreme tensioning positions of tensioner 400. For example, the failure detection device 500 for detecting the extreme tensioning position of the tensioning device 400 may be a sensor. The sensor includes, but is not limited to, a displacement sensor or a pressure sensor 403, etc.
In one embodiment of the present invention, the tensioning device 400 comprises a tensioning cylinder 401, a tensioning wheel 402 and a pressure sensor 403.
In an embodiment of the invention, the power transmission assembly further comprises a control device. The control device is electrically connected to the pressure sensor 403 and the tension cylinder 401. The control means is for controlling the operating state of the tensioning cylinder 401 based on the detection result of the pressure sensor 403.
For example, as shown in fig. 1, tensioning cylinder 401 includes a cylinder body and a piston rod. A tension wheel 402 is connected to the outer end of the piston rod. The piston rod can drive take-up pulley 402 telescopic movement to adjust the tensile force of belt. In this embodiment, when the piston rod drives the tension pulley 402 to extend outward, the tension of the belt can be increased, and when the piston rod drives the tension pulley 402 to retract inward, the tension of the belt can be decreased.
A pressure sensor 403 is installed between the tension pulley 402 and the belt. The pressure sensor 403 is used to detect the pressure value between the belt and the tensioner 402. Different pressure values correspond to different tensions of the belt. The target pressure value is preset in the control device. The target pressure value corresponds to a pressure value at which the current belt is in the target tension state.
When the pressure value detected by the pressure sensor 403 is smaller than the target pressure value, which indicates that the belt is in a slack state, the control device controls the tensioning cylinder 401 to drive the tensioning wheel 402 to extend outward until the pressure value between the belt and the tensioning wheel 402 is increased to a target state, that is, the belt is in a target tensioning state.
When the pressure value detected by the pressure sensor 403 is greater than the target pressure value, which indicates that the belt is in an over-tensioned state, the control device controls the tensioning cylinder 401 to drive the tensioning wheel 402 to contract inwards until the pressure value between the belt and the tensioning wheel 402 is reduced to the target state, that is, the belt is in the target tensioned state.
In one embodiment of the present invention, the failure detection device 500 includes a travel switch 501 and a base 502. The travel switch 501 is connected to the base 502. The base 502 is used to mount the travel switch 501 to the tensioner 400 at the extreme tensioning positions. The tensioning device 400 is adapted to the installation position of the travel switch 501 in order to trigger the travel switch 501 in the state in which the tensioning device 400 is extended into the extreme tensioning position.
Specifically, in one embodiment of the present invention, the travel switch 501 includes a body and a contact. The body is connected to a base 502. The contacts are connected to a tensioner 402. The contact is adapted to the mounting position of the body so that the contact is in contact with the body in a state where the tensioner 400 is extended to the extreme tensioning position.
Further, in an embodiment of the present invention, the failure detection apparatus 500 further includes an alarm apparatus 600. The control device is connected to the alarm device 600 and the travel switch 501. The control device is used for controlling the working state of the alarm device 600 based on the detection result of the travel switch 501.
For example, as shown in fig. 1, a base 502 is mounted to the work machine at a suitable location. The base 502 is used to deploy the travel switch 501 to a target height position so that the travel switch 501 can be triggered when the tensioner 402 is moved to a limit tensioning position, i.e., when the belt is in a failure state.
The body of the travel switch 501 is mounted to the base 502, and the contacts of the travel switch 501 are mounted to the tensioner 402 at edge locations. When the tensioning cylinder 401 drives the tensioning wheel 402 to move to the position where the contact contacts with the body, it indicates that the tensioning device 400 moves to the limit tensioning position, and the belt is in a failure state.
The control device is electrically connected with the travel switch 501 and the alarm device 600. When the tensioner 400 moves to the extreme tensioning position and triggers the travel switch 501, the travel switch 501 sends a signal to the control device. The control device controls the alarm device 600 to give an alarm to prompt the worker that the belt is in a failure state and needs to be replaced.
It should be noted that the present invention is not limited to any particular type of alarm device 600. For example, in one embodiment of the present invention, the alarm device 600 includes an alarm lamp and/or an alarm bell. Warning device 600 may be mounted to the cab of the work machine to indicate to the operator the tension state of the belt.
It should also be noted here that in the embodiments of the present invention, the control device may be a conventional hardware control device such as a single chip or a PLC. In other words, the control means of the present invention can be implemented by only a hardware device or a hardware circuit without the aid of a software program.
In one embodiment of the present invention, the power transmission assembly further comprises a frame 700. Compressor 100 and engine 200 are mounted to frame 700.
In another embodiment of the present invention, the failure detection apparatus 500 further comprises a telescopic support rod 503. The base 502 is mounted to the end of a telescopic support rod 503. The telescopic supporting rod 503 is used for adjusting the supporting and connecting positions of the base 502 and the travel switch 501.
For example, as shown in fig. 1, the telescopic support rod 503 includes a telescopic cylinder. The cylinder body of the telescopic oil cylinder is fixedly connected to a proper position of the working machine. The outer end of the piston rod of the telescopic oil cylinder is connected with a base 502. By adjusting the extension length of the telescopic cylinder, the support positions of the base 502 and the body of the travel switch 501 can be adjusted, and further, the travel length between the body of the travel switch 501 and the contact can be adjusted. By adjusting the supporting position of the travel switch 501, the failure detection device 500 can be adapted to belts of different models.
An embodiment of the second aspect of the present invention provides a working machine, comprising a power transmission assembly as described above.
For example, in an embodiment of the present invention, the work machine includes an excavator. The excavator includes an air conditioning and refrigeration system. The air conditioning refrigeration system includes a power transmission assembly as described above.
It should be understood herein that the above-described work machine includes, but is not limited to, an excavator. For example, the work machine may include a crane, a dump truck, a loading truck, or the like.
Further, since the work machine includes the power transmission assembly as described above, it also has the advantages as described above.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A power transmission assembly is characterized by comprising a compressor, an engine, a transmission belt, a tension device and a failure detection device,
wherein the engine is connected with the compressor through the transmission belt, the tensioner is supported to one side of the transmission belt, the tensioner is telescopically movable to adjust the tension of the transmission belt, the failure detection device is installed to the other side of the transmission belt, and the failure detection device is used for detecting the extreme tension position of the tensioner to determine the failure state of the transmission belt.
2. The power transfer assembly of claim 1, wherein the tensioning device comprises a tensioning cylinder, a tensioning wheel, and a pressure sensor,
the tensioning oil cylinder is connected with the tensioning wheel, the tensioning wheel is supported to the inner side of the transmission belt, the tensioning oil cylinder drives the tensioning wheel to move so as to adjust the tensioning force of the transmission belt, the pressure sensor is installed between the tensioning wheel and the transmission belt, and the pressure sensor is used for detecting the tensioning force of the transmission belt.
3. The power transmission assembly of claim 2, further comprising a control device electrically connected to the pressure sensor and the tensioning cylinder, the control device being configured to control an operating state of the tensioning cylinder based on a detection result of the pressure sensor.
4. The power transmission assembly of claim 3, wherein the failure detection device includes a travel switch coupled to a base for mounting the travel switch to the tensioner at an extreme tension position, the tensioner being adapted to the mounting position of the travel switch to activate the travel switch in a state where the tensioner is extended to the extreme tension position.
5. The power transmission assembly of claim 4, wherein the travel switch includes a body connected to the base and a contact connected to the tensioner, the contact being adapted to a mounting position of the body such that the contact contacts the body when the tensioner is extended to an extreme tensioning position.
6. The power transmission assembly of claim 4, wherein the failure detection device further comprises an alarm device, the control device is connected with the alarm device and the travel switch, and the control device is configured to control an operating state of the alarm device based on a detection result of the travel switch.
7. The power transmission assembly of claim 4, wherein the failure detection device further comprises a telescoping support rod, the base being mounted to an end of the telescoping support rod, the telescoping support rod being used to adjust a support connection position of the base and the travel switch.
8. The power transfer assembly of claim 1, further comprising a frame to which the compressor and the engine are mounted.
9. The power transmission assembly of claim 6, wherein the warning device comprises a warning light and/or a warning bell.
10. A work machine, characterized by comprising a power transmission assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222294680.5U CN218267065U (en) | 2022-08-30 | 2022-08-30 | Power transmission assembly and working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222294680.5U CN218267065U (en) | 2022-08-30 | 2022-08-30 | Power transmission assembly and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218267065U true CN218267065U (en) | 2023-01-10 |
Family
ID=84709859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222294680.5U Active CN218267065U (en) | 2022-08-30 | 2022-08-30 | Power transmission assembly and working machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218267065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428325A (en) * | 2023-06-13 | 2023-07-14 | 国昌德工(陕西)建筑工程有限公司 | Construction waste crusher |
-
2022
- 2022-08-30 CN CN202222294680.5U patent/CN218267065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116428325A (en) * | 2023-06-13 | 2023-07-14 | 国昌德工(陕西)建筑工程有限公司 | Construction waste crusher |
| CN116428325B (en) * | 2023-06-13 | 2023-08-18 | 国昌德工(陕西)建筑工程有限公司 | Construction waste crusher |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218267065U (en) | Power transmission assembly and working machine | |
| JP6511098B2 (en) | Aerial work vehicle with electronic sensor type safety protection device | |
| US20120173094A1 (en) | Mobile working machine | |
| US8657335B2 (en) | Stabilizer device for an operating machine | |
| JP6554446B2 (en) | System for moving electrically driven work machines | |
| CN209765073U (en) | article detection device | |
| KR101038523B1 (en) | Working radius of crane vehicle control device | |
| KR101988938B1 (en) | Magnetic crane device and method for transport the track-shoe by using the same | |
| KR101233749B1 (en) | Weight sensing apparatus for ladder truck's basket | |
| JP4874563B2 (en) | Outrigger safety device | |
| CN111664826A (en) | Distance detection device and work vehicle | |
| KR100482972B1 (en) | System for balancing crane in wrecker | |
| JP4043160B2 (en) | Multistage telescopic work machine safety device | |
| JP4073074B2 (en) | Mobile crane and supporting method thereof | |
| CN215798105U (en) | Boom extension rope tensioning structure, boom and crane | |
| JP2018131303A (en) | Crane device with jib | |
| CN216190592U (en) | Buffer control system of telescopic boom, telescopic boom and operation machine | |
| JP6747238B2 (en) | Operation control device for work machine control valve | |
| CN111924716B (en) | Lifting safety protection device of hydrogen cooler and working method thereof | |
| KR100667459B1 (en) | Safety equipment for working vehicle | |
| US4131078A (en) | Collapsible crane backhitch and overload signal system | |
| KR100482117B1 (en) | equipment loader of manual transmission | |
| JP3310476B2 (en) | Safety limit display for truck mounted cranes | |
| JPH10175797A (en) | Work table leveling device | |
| JPH11278794A (en) | Crane equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |