CN201333753Y - Access door and stirring machine therewith - Google Patents
Access door and stirring machine therewith Download PDFInfo
- Publication number
- CN201333753Y CN201333753Y CNU200820176414XU CN200820176414U CN201333753Y CN 201333753 Y CN201333753 Y CN 201333753Y CN U200820176414X U CNU200820176414X U CN U200820176414XU CN 200820176414 U CN200820176414 U CN 200820176414U CN 201333753 Y CN201333753 Y CN 201333753Y
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- door
- access door
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- pressure sensor
- pressure
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- 238000003756 stirring Methods 0.000 title abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The utility model provides an access door and a stirring machine with the access door. The access door comprises a door edge, a door plate, an elastic part, a pressure sensor, a signal processing device and a three-phase AC contactor, wherein the door plate is matched with the door edge; the elastic part is fixed on the door plate towards the door edge; the pressure sensor is fixed on the door edge and is arranged correspondingly to the elastic part; the pressure sensor is used for detecting and outputting pressure signals under the action of the elastic part; the signal processing device is connected with the pressure sensor and is used for judging the open-and-shut state of the access door according to the pressure signals; and the three-phase AC contactor is used for controlling the on-and-off of a device power supply according to the judging result of the signal processing device. With the adoption of the access door, the reliability can be improved, the misjudgement for the shut or open state of the access door is avoided, and the device power supply can be switched on or off exactly, thereby ensuring personal security.
Description
Technical Field
The utility model relates to a mixer technical field, in particular to access door and mixer that has this access door.
Background
In the construction of industrial, civil buildings, highways or highways, it is generally necessary to mix cement concrete, asphalt cement mortar or asphalt mixtures (hereinafter, these three are collectively referred to as "mixtures"). The mixer is the key equipment that the mixture was stirred, because the condition is abominable among the stirring process, needs often to maintain the mixer, sometimes even need open the access door of mixer, gets into the inside troubleshooting and the maintenance facility of mixer.
In order to prevent the stirring shaft from rotating to hurt people when a maintainer works in the stirrer, the personal safety is ensured, the stirrer must be forbidden to be started in the process of maintenance, and the most direct and effective method is to automatically cut off the power supply of the stirrer in the process of maintenance. In the prior art, the opening or closing state of an access door of a blender is generally detected by a mechanical switch arranged on the access door. When the access door is closed, the door panel provides a displacement for the mechanical switch to force the mechanical switch to be closed, when the access door is opened, the mechanical switch is disconnected due to the elasticity of the mechanical switch, so that a switching value is formed, then the detected switching value is fed back to the control system, the control system judges whether the access door is opened or not according to the input switching value, and if so, the power supply of the stirrer is cut off; if not, the blender is allowed to start.
However, the mechanical switch is easily deposited and solidified by cement and other mixture in the mixer, resulting in malfunction of the mechanical switch, and may cause malfunction due to unintended touch by the service personnel, thereby causing failure of protection.
In a word, the existing method for detecting the opening or closing state of the access door of the stirrer through the mechanical switch has low reliability, can cause misjudgment of a control system, cannot accurately cut off the power supply of the stirrer, and has potential danger of easily threatening the safety of personnel.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem provide a higher access door of reliability, can avoid closing or opening the misjudgement of state to the access door, the accurate equipment power that cuts off or put through guarantees personnel's safety.
The utility model provides a further problem provides a mixer with above-mentioned access door, can avoid closing or opening the misjudgement of state to the access door, and the personnel safety is guaranteed to accurate cutting off or switch on equipment power.
In order to solve the above problem, the utility model provides an access door, include:
a door edge;
the door plate is matched with the door edge;
the elastic component is fixed on the door panel and faces to the door edge;
the pressure sensor is fixed on the door edge and corresponds to the elastic component, and the pressure sensor is used for detecting and outputting a pressure signal under the action of the elastic component;
the signal processing device is connected with the pressure sensor and is used for judging the opening and closing state of the access door according to the pressure signal;
and the three-phase alternating current contactor is used for controlling the on-off of the power supply of the equipment according to the judgment result of the signal processing device.
The door further comprises an adjusting component which is connected between the door panel and the elastic component and can adjust the elastic deformation of the elastic component.
The adjusting part is a screw rod, the screw rod is installed on the door panel, one end of the screw rod is an adjusting handle, and the other end of the screw rod is fixedly connected with the elastic part.
The elastic component is a spring, one end of the spring is fixedly connected with the screw rod, the other end of the spring is a free end, and the compression direction is opposite to the pressure sensor.
The pressure sensor is fixed on the door edge through the mounting seat.
The signal processing apparatus includes: the device comprises a signal converter, a pulse counter and a controller; wherein,
the signal converter is used for converting the pressure signal into a pulse signal and sending the pulse signal to the pulse counter;
the pulse counter is used for converting the pulse signal into a digital signal and sending the digital signal to the controller;
and the controller is used for comparing the digital signal with a preset value, judging the opening and closing state of the access door and sending a judgment result to the three-phase alternating current contactor.
The signal processing device is also used for judging whether the access door is tightly closed or not according to the detection signal.
The access door further includes: and the signal processing device is also used for sending the judgment result to the alarm display.
The signal converter is located on the door edge adjacent to the pressure sensor.
The signal converter and the pressure sensor are integrated hardware.
The pulse counter and the controller are integrated hardware.
Correspondingly, the stirrer is further provided with any access door in the technical scheme.
Compared with the prior art, the technical scheme has the following advantages:
the access door provided by the utility model adopts the elastic component and the pressure sensor to convert the displacement when the door panel is closed into the pressure signal, and then the state of the access door is obtained by the comparison and judgment with the preset value after the conversion and the counting of the signal processing device, thereby controlling the power on-off of the stirring machine; secondly, even if the maintainer unconsciously touches the pressure sensor, the general condition can not produce sufficient pressure, can not satisfy the condition of start-up power at last yet, consequently can improve the reliability, avoids closing or opening the erroneous judgement of state to the maintainer, and accurate cutting off or switch-on mixer power guarantees personnel's safety.
The utility model provides a mixer with above-mentioned access door can avoid closing the access door or the erroneous judgement of opening the state, and the accurate equipment power that cuts off or put through guarantees personnel's safety.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic structural diagram illustrating a closed state of a repair door according to a first embodiment;
FIG. 2 is a schematic structural view illustrating an opened state of an access door according to the first embodiment;
FIG. 3 is a partially enlarged schematic structural view of an access door according to the first embodiment;
FIG. 4 is a schematic view of a signal processing device of an access door according to an embodiment;
FIG. 5 is a schematic structural view showing a closed state of an access door according to the second embodiment;
fig. 6 is a partially enlarged schematic structural view of an access door in the second embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited by the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional views showing the structure of the device will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In a conventional concrete mixer, the open or closed state of an access door is generally detected by a mechanical switch provided on the access door of the mixer. When the access door is closed, the door panel provides a displacement for the mechanical switch to force the switch to be closed, when the access door is opened, the switch is disconnected due to the elasticity of the switch, so that a switching value is formed, then the detected switching value is fed back to the control system, then the control system judges whether the access door is opened or not according to the input switching value, and if so, the power supply of the stirring machine is cut off; if not, the blender is allowed to start.
However, the mechanical switch is easily deposited and solidified by cement and other mixture in the mixer, resulting in malfunction of the mechanical switch, and may cause malfunction due to unintended touch by the service personnel, thereby causing failure of protection. In a word, the existing method for detecting the opening or closing state of the access door of the stirrer through the mechanical switch has low reliability, can cause misjudgment of a control system, cannot accurately cut off the power supply of the stirrer, and has potential danger of easily threatening the safety of personnel.
Based on above reason, the utility model provides an access door, this access door includes:
a door edge;
the door plate is matched with the door edge;
the elastic component is fixed on the door panel and faces to the door edge;
the pressure sensor is fixed on the door edge and corresponds to the elastic component, and the pressure sensor is used for detecting and outputting a pressure signal under the action of the elastic component;
the signal processing device is connected with the pressure sensor and is used for judging the opening and closing state of the access door according to the pressure signal;
and the three-phase alternating current contactor is used for controlling the on-off of the power supply of the equipment according to the judgment result of the signal processing device.
An example of an access door is described in detail below in the context of a concrete mixer.
Example one
Fig. 1 is a schematic structural diagram of a closed state of a repair door in this embodiment, fig. 2 is a schematic structural diagram of an open state of the repair door in this embodiment, fig. 3 is a schematic structural diagram of a partially enlarged state of the repair door in this embodiment, and fig. 4 is a schematic structural diagram of a signal processing device in this embodiment.
The access door is positioned on a machine cover of the stirrer, and when the stirrer needs to be overhauled or maintained, the access door is opened, and maintenance personnel can enter the inner work of the stirrer through the access door.
As shown in fig. 1 and 2, a cover 1 (other parts of the mixer are not shown) of the mixer is connected to a door panel 2 of an access door through a support bar 3, and the access door includes:
a door edge 1, wherein the door edge in the embodiment is a cover 1 of the stirrer;
the door plate 2 is matched with the door edge 1; the door plate 2 can be completely buckled with the door edge 1 when closed, so that the interior of the stirrer is sealed;
an elastic component 8 fixed on the position of the door panel 2 facing the door edge 1; preferably, the elastic component 8 is a spring, and referring to fig. 3, one end 82 of the spring 8 is connected with the door panel 2, and the other end is a free end 81 corresponding to the pressure sensor 9; the spring 8 is used for converting the displacement of the door panel 2 into the pressure of the spring 8, transmitting the pressure to the pressure sensor 9, buffering the impulse of the door panel 2 borne by the pressure sensor 9 and protecting the pressure sensor 9;
a pressure sensor 9 fixed on the door edge 1 and corresponding to the elastic component 8; when the access door is closed, the door panel 2 is tightly buckled with the door edge 1, the free end 81 of the elastic component 8 is pressed on the pressure sensor 9, the pressure sensor 9 is triggered to generate a detection signal, usually the detection signal is in the form of voltage or current, and therefore, the pressure sensor 9 is used for outputting the detection signal under the action of the elastic component; preferably, the pressure sensor 9 can be fixedly connected with the door edge 1 through the mounting seat 7, and the mounting seat 7 is fixed on the door edge 1, so that the positioning and protection effects on the pressure sensor 9 can be realized;
a signal processing device (see fig. 4) connected to the pressure sensor 9 for judging the open/close state of the access door based on the detection signal; the signal processing device can be positioned at a proper position on the blender, and preferably, a signal converter in the signal processing device is arranged at a position on the door edge, which is adjacent to the pressure sensor 9, so that signal interference caused by a long distance from the pressure sensor 9 can be avoided;
and the three-phase alternating current contactor 14 (see fig. 4) is used for controlling the power on-off of the blender according to the judgment result of the signal processing device (see fig. 4).
As shown in fig. 2, the signal processing apparatus may further include: a signal converter 10, a pulse counter 11 and a controller 12; wherein,
the signal converter 10 is configured to convert the pressure signal detected by the pressure sensor 9 into a pulse signal and send the pulse signal to the pulse counter 11; the pulse counter 11 is configured to convert the pulse signal into a digital signal and send the digital signal to the controller 12; the controller 12 is configured to compare the digital signal with a preset value, determine an open/close state of the access door, and send a determination result to the three-phase ac contactor 14.
The signal converter 10 is used for converting the pressure signal output by the pressure sensor 9 into a pulse signal with a frequency proportional to the magnitude of the pressure signal, so that the situation that the artificial direct access of an analog signal to the controller replaces the pressure sensor 9 to cause misjudgment of a control system can be prevented; preferably, the signal converter 10 and the pressure sensor 9 may be integrated hardware, and implement the functions of pressure detection and pulse signal output.
The pulse counter 11 can be a high-frequency counter inside the PLC or other interface card or interface module with a pulse counting function; the controller 12 may be a PLC controller or other device capable of receiving and judging the digital signal, and outputting a judgment result and a switching value control signal; preferably, the pulse counter 11 and the controller 12 may be integrated hardware.
The controller 12 may combine the detected access door status as one condition with other conditions and output the logic result to the three-phase ac contactor 14 to turn the blender motor on or off.
Preferably, the access door further comprises an alarm display 13 for receiving and displaying the judgment result of the signal processing device, the signal processing device is further used for sending the judgment result to the three-phase alternating current contactor 14 and also sending the judgment result to the alarm display 13, and the alarm display 13 displays alarm information after receiving the judgment result and prompts the attention of an operator. The alarm display 13 may be an industrial personal computer or other device capable of receiving an alarm signal and displaying alarm information.
The working principle of the access door is as follows:
the elastic component 8 converts the displacement of the access door 2 when closed into the pressing force of the elastic component 8 (such as a spring), and buffers the momentum of the door 2 when closed, so as to reduce the impulse borne by the pressure sensor 9; the pressure sensor 9 detects the pressure applied to it and converts it into corresponding analog signal to be transmitted to the signal converter 10, and the signal converter 10 converts the analog signal input by the pressure sensor 9 into pulse signal with certain frequency to be transmitted to the pulse counter 11; the pulse counter 11 converts the pulse signal input by the signal converter 10 into a digital signal which can be received and identified by the controller 12; the controller 12 receives the digital signal output by the pulse counter 11 and judges the pressure range, if the pressure is smaller than a set low point, the access door is not closed, if the pressure is larger than the set low point, the access door is closed, and the controller 12 outputs the judgment result to the three-phase alternating current contactor 14; the three-phase ac contactor 14 sends a control signal to turn the blender power on or off.
The controller 12 can also send the judgment result to the alarm display 13 at the same time, and the alarm display 13 receives and displays the judgment result information of the controller 12, so as to provide a basis for the processing of the operator.
Here, the pressure detected by the pressure sensor 9 when the door panel 2 is naturally closed due to gravity is set in advance as the pressure low point to be compared by the controller 12.
According to the access door provided by the embodiment, the elastic component and the pressure sensor are adopted to convert the displacement when the door panel is closed into the pressure signal, and then the pressure signal is converted and counted by the signal processing device and then is compared with the preset value for judgment to obtain the state of the access door, so that the on-off of a power supply of the stirring machine is controlled, and compared with a mechanical switch, firstly, the pressure sensor is not easy to deposit and solidify by a mixture such as cement in the stirring machine; secondly, even if the maintainer unconsciously touches the pressure sensor, the general condition can not produce sufficient pressure, can not satisfy the condition of start-up power at last yet, consequently can improve the reliability, avoids closing or opening the erroneous judgement of state to the maintainer, and accurate cutting off or switch-on mixer power guarantees personnel's safety.
In addition, the access door can be properly modified on the basis of the existing hardware of the stirrer, the elastic part, the pressure sensor and the signal processing device are added on the existing access door to realize the access door, the access door is simple in structure, convenient to realize and simple and humanized to operate, and the phenomenon of protection failure during control by adopting a mechanical switch can be greatly reduced.
In addition, in order to avoid the abrasion of the elastic member or the error of the pressure detecting portion due to the long-term use of the elastic member, an adjusting member may be provided on the access door, which is described in detail in the following embodiments.
Example two
Fig. 5 is a schematic structural view of a closed state of the access door in this embodiment, and fig. 6 is a schematic structural view of a partially enlarged access door in this embodiment.
As shown in fig. 5, the access door includes:
a door edge 21;
a door panel 22 engaged with the door edge 21;
an elastic member 28 fixed to the door panel 22 at a position facing the door edge 21;
a pressure sensor 29 fixed on the door edge 21 and corresponding to the elastic component 28, wherein the pressure sensor 29 is used for detecting and outputting a pressure signal under the action of the elastic component 28;
a signal processing device (not shown in the figure) connected with the pressure sensor 29 and used for judging the opening and closing state of the access door according to the pressure signal;
and the three-phase alternating current contactor is used for controlling the power on-off of the equipment according to the judgment result of the signal processing device (not shown in the figure).
The access door in the present embodiment is different from the first embodiment in that the access door further includes an adjustment member connected between the door panel 21 and the elastic member 28 and capable of adjusting an elastic deformation amount of the elastic member 28.
Preferably, referring to fig. 5 and 6, the adjusting member is a screw 26, the screw 26 is mounted on the door panel, one end of the screw is an adjusting handle, and the other end of the screw is fixedly connected to the elastic member, the elastic deformation of the elastic member 28 can be changed by adjusting a nut 25 on the screw 26, for example, the elastic member 28 is a spring, and the compression length of the spring can be adjusted by rotating the nut 25 on the screw 26.
When the access door is compressed for a long time to cause the elastic coefficient of the elastic component to be reduced or the pressure detection part to be worn, the elastic deformation of the elastic component is adjusted and corrected again through the adjusting component, so that the pressure sensor and the signal processing device at the output end of the pressure sensor can acquire accurate and stable steady-state pressure, and the reliability of the access door in long-time use is improved.
Other structures and working principles of the access door in this embodiment are similar to those in the first embodiment, and are not described herein again.
In addition, the signal processing device can not only detect whether the access door is closed, but also judge whether the access door is tightly closed.
When this kind of equipment in the mixer actually-operated, the access door leads to the closure not tight because many times switching wearing and tearing, and the mixture is probably revealed along the crack in the stirring process, not only causes the mixture loss but also can cause the pollution to parts such as the pressure sensor on the access door, on this basis the utility model discloses a further embodiment, signal processing device can also be used for the basis whether the detection signal is tight to make the judgement to the closing of access door.
The pressure detected by the pressure sensor when the door panel is pressed by the pressing handle and tightly closed is set as a high pressure point when the controller compares, the controller receives a digital signal output by the pulse counter and judges a pressure range, if the pressure is smaller than a set low point, the access door is not closed, if the pressure is larger than the set low point but smaller than the set high point, the access door is not tightly closed, the mixture is easy to leak, and if the pressure is larger than the set high point, the access door is tightly closed. And then the controller sends the judgment result to the three-phase alternating current contactor and the alarm display. The operator sees the judgment result displayed by the alarm display, and if the closing of the access door is not tight, corresponding measures can be taken to tightly close the door plate, for example, the pressing handle shown in fig. 4 is pressed.
Furthermore, the utility model also provides a mixer, any access door that has in the above embodiment. Other structures and positions of the access door of the blender are similar to those in the prior art, and are not described in detail herein.
It should be noted that, there are various opening and closing manners of the existing access door for blender, such as a split type, a side hung type, a push-pull type, etc., and the access door is not limited to the above embodiments, and those skilled in the art should understand that the access door with other opening and closing manners can also realize the effects of the above embodiments by installing the pressure sensor, the elastic component, the signal processing device, the adjusting component, etc. at the proper position between the door panel and the door edge, and therefore, the present invention is within the protection scope of the present invention.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way.
Of course, the access door is not limited to a blender, and can be applied to other large-scale equipment.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. The invention is not limited to the embodiments described herein, but is capable of other embodiments with obvious modifications and variations, including those shown in the drawings and described herein. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (11)
1. An access door, comprising:
a door edge;
the door plate is matched with the door edge;
the elastic component is fixed on the door panel and faces to the door edge;
the pressure sensor is fixed on the door edge and corresponds to the elastic component, and the pressure sensor is used for detecting and outputting a pressure signal under the action of the elastic component;
the signal processing device is connected with the pressure sensor and is used for judging the opening and closing state of the access door according to the pressure signal;
and the three-phase alternating current contactor is used for controlling the on-off of the power supply of the equipment according to the judgment result of the signal processing device.
2. The access door of claim 1, further comprising an adjustment member connected between the door panel and the elastic member and capable of adjusting an amount of elastic deformation of the elastic member.
3. The access door of claim 2, wherein the adjustment member is a threaded rod, the threaded rod is mounted on the door panel, one end of the threaded rod is an adjustment handle, and the other end of the threaded rod is fixedly connected with the elastic member.
4. The access door of claim 3, wherein the resilient member is a spring, one end of the spring is fixedly connected to the screw, the other end of the spring is a free end, and the compression direction is opposite to the pressure sensor.
5. The access door of claim 4, further comprising a mount secured to the door jamb, wherein the pressure sensor is secured to the door jamb by the mount.
6. Access door according to any of claims 1-5, characterized in that the signal processing means comprise: the device comprises a signal converter, a pulse counter and a controller; wherein,
the signal converter is used for converting the pressure signal into a pulse signal and sending the pulse signal to the pulse counter;
the pulse counter is used for converting the pulse signal into a digital signal and sending the digital signal to the controller;
and the controller is used for comparing the digital signal with a preset value, judging the opening and closing state of the access door and sending a judgment result to the three-phase alternating current contactor.
7. The access door of claim 6, further comprising: and the signal processing device is also used for sending the judgment result to the alarm display.
8. The access door of claim 6, wherein the signal converter is located along the door edge adjacent the pressure sensor.
9. The access door of claim 6, wherein the signal converter and the pressure sensor are integrated hardware.
10. The access door of claim 6, wherein the pulse counter and the controller are integrated hardware.
11. A mixer comprising an access door as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820176414XU CN201333753Y (en) | 2008-11-24 | 2008-11-24 | Access door and stirring machine therewith |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820176414XU CN201333753Y (en) | 2008-11-24 | 2008-11-24 | Access door and stirring machine therewith |
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| Publication Number | Publication Date |
|---|---|
| CN201333753Y true CN201333753Y (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820176414XU Expired - Fee Related CN201333753Y (en) | 2008-11-24 | 2008-11-24 | Access door and stirring machine therewith |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201333753Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243973A (en) * | 2013-05-09 | 2013-08-14 | 黎宁茹 | Device and method for detecting door states |
| CN104389491A (en) * | 2014-09-18 | 2015-03-04 | 中国神华能源股份有限公司 | Manhole isolation equipment |
| CN104563689A (en) * | 2014-12-10 | 2015-04-29 | 长兴鑫宇耐火材料有限公司 | Security lock of gate of full-automatic high-temperature cellar |
| CN107039199A (en) * | 2017-05-22 | 2017-08-11 | 珠海格力电器股份有限公司 | Power-off structure of access door and new fan |
| CN107823756A (en) * | 2017-10-12 | 2018-03-23 | 英华达（上海）科技有限公司 | Infusion device |
| CN108482894A (en) * | 2018-05-22 | 2018-09-04 | 广东安本智能机器有限公司 | A kind of bunker mechanism for combination balance |
| CN109649009A (en) * | 2018-12-10 | 2019-04-19 | 深圳劲鑫科技有限公司 | A kind of spray printing device outer cover maintenance valve mechanism |
| CN113478656A (en) * | 2021-07-01 | 2021-10-08 | 包头市公路工程股份有限公司 | Construction method for guaranteeing safe application of single-wheel dynamic break contact of water-stable mixing station in cleaning of mixing cylinder |
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2008
- 2008-11-24 CN CNU200820176414XU patent/CN201333753Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243973A (en) * | 2013-05-09 | 2013-08-14 | 黎宁茹 | Device and method for detecting door states |
| CN103243973B (en) * | 2013-05-09 | 2015-07-15 | 许益军 | Method for detecting door states |
| CN104389491A (en) * | 2014-09-18 | 2015-03-04 | 中国神华能源股份有限公司 | Manhole isolation equipment |
| CN104563689A (en) * | 2014-12-10 | 2015-04-29 | 长兴鑫宇耐火材料有限公司 | Security lock of gate of full-automatic high-temperature cellar |
| CN107039199A (en) * | 2017-05-22 | 2017-08-11 | 珠海格力电器股份有限公司 | Power-off structure of access door and new fan |
| CN107039199B (en) * | 2017-05-22 | 2019-12-17 | 珠海格力电器股份有限公司 | Power-off structure of access door and new fan |
| CN107823756A (en) * | 2017-10-12 | 2018-03-23 | 英华达（上海）科技有限公司 | Infusion device |
| CN107823756B (en) * | 2017-10-12 | 2021-03-12 | 英华达（上海）科技有限公司 | Infusion device |
| CN108482894A (en) * | 2018-05-22 | 2018-09-04 | 广东安本智能机器有限公司 | A kind of bunker mechanism for combination balance |
| CN109649009A (en) * | 2018-12-10 | 2019-04-19 | 深圳劲鑫科技有限公司 | A kind of spray printing device outer cover maintenance valve mechanism |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hunan Sany Road Machinery Co., Ltd. Assignor: Sanyi Heavy Industry Co., Ltd. Contract record no.: 2011430000061 Denomination of utility model: Access door and stirring machine therewith Granted publication date: 20091028 License type: Exclusive License Record date: 20110503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20151124 |