CN203702736U - Shield tunneling machine and oil cylinder displacement detection device thereof - Google Patents
Shield tunneling machine and oil cylinder displacement detection device thereof Download PDFInfo
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- CN203702736U CN203702736U CN201320881279.XU CN201320881279U CN203702736U CN 203702736 U CN203702736 U CN 203702736U CN 201320881279 U CN201320881279 U CN 201320881279U CN 203702736 U CN203702736 U CN 203702736U
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- oil cylinder
- shield machine
- displacement detector
- cylinder displacement
- oil
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Abstract
The utility model discloses a shield tunneling machine and an oil cylinder displacement detection device thereof. The oil cylinder displacement detection device comprises a flow sensor and a controller. The flower sensor is used for sensing volume change information of hydraulic oil in an oil cylinder of the shield tunneling machine and generating a flow sensing signal according to the volume change information of the hydraulic oil. The flow sensor is installed on an oil feeding pipeline or an oil return pipeline of the oil cylinder. The controller is used for determining the volume change quantity of hydraulic oil in the oil cylinder and calculating displacement of the oil cylinder according to the volume change quantity. The controller is connected with the flow sensor through signals. The oil cylinder displacement detection device of the shield tunneling machine cannot affect the steel structure of the oil cylinder, and the sensor is flexible in installation position and convenient to maintain.
Description
Technical field
The utility model relates to oil cylinder displacement detecting field, particularly shield machine and oil cylinder displacement detector thereof.
Background technique
At present, in shield machine, the detection great majority of oil cylinder stroke are the forms of additional dragline type stroke counter or built-in hysteresis displacement sensor.If the patent No. is CN03153106, the patent that name is called " a kind of built-in hydraulic oil cylinder displacement transducer " discloses the built-in sensor that a kind of hydraulic cylinder displacement is measured, its structure as shown in Figure 1, specifically comprise: one is fixed on the housing 2 of hydraulic jack one end, rotor 1 and rotary main shaft 19, described built-in sensor also comprises that an one end is wrapped on described rotor 1, the hawser 11 that the other end is connected with hydraulic cylinder piston, described built-in sensor also comprises spring 5 and an encoder 17 being connected with described rotary main shaft 19, described rotor 1 is fixedly connected with and becomes one with rotary main shaft 19, described spring 5 is plane scroll spring, and this plane scroll spring is arranged on described housing 2 outsides.
There is following shortcoming in above-mentioned test mode:
1) spring is built-in, and the shape and size of spring are subject to the restriction of oil cylinder housing size;
2) spring belongs to the easily damaged parts in sensing device, limited by spring, changes spring more difficult.
Model utility content
In view of this, the utility model proposes a kind of oil cylinder displacement detector and creeper undercarriage of shield machine, its unrestricted steel structure that can't affect oil cylinder in cylinder structure, and easy to maintenance.
On the one hand, provide a kind of oil cylinder displacement detector of shield machine, comprising: for the oil cylinder hydraulic oil Volume Changes information of sensing shield machine, and according to the flow transducer of described hydraulic oil Volume Changes Information generation sensing flux signal; Described flow transducer is arranged on the in-line or return line of described oil cylinder; For determining the volume change of described oil cylinder hydraulic oil according to described sensing flux signal, and calculate the controller of the displacement amount of described oil cylinder according to described volume change, described controller is connected with described flow sensor signal.
Further, described sensing flux signal is pulse signal; Described oil cylinder displacement detector also comprises the described pulse signal sending for receiving described flow transducer, and calculates the quantity of described pulse signal, and result of calculation is sent to the high-speed counter of described controller; Described controller comprises for according to the computing unit of the volume change of oil cylinder hydraulic oil described in the quantity calculative determination of described pulse signal.
Further, described high-speed counter is integrated is arranged in described controller.
Further, described high-speed counter is single-phase single counter.
Further, described high-speed counter is single-phase double counters.
Further, described high-speed counter is two-phase double counters.
Further, described sensing flux signal is voltage/current analogue signal; Described controller comprises for according to default voltage/current value and the corresponding relation of flow, determines flow value corresponding to described voltage/current analogue signal, and using the processing unit of described flow value volume change of hydraulic oil in described oil cylinder.
Further, the oil cylinder displacement detector of described shield machine also comprises the display device for showing described displacement amount, and described display device is connected with described controller signals.
Further, described flow transducer is vortex street type flow transducer.
On the other hand, provide a kind of shield machine, comprise oil cylinder, be also provided with the oil cylinder displacement detector of described shield machine.
The oil cylinder displacement detector of the utility model shield machine is measured the displacement of oil cylinder by flow transducer, when oil cylinder stretches, cause that the hydraulic oil volume in oil cylinder oil pocket changes, flow transducer can sensing hydraulic oil volume variation and generate sensing flux signal, determine again the volume change (changes in flow rate amount) of hydraulic oil by controller, and then can calculate the displacement of oil cylinder according to volume change, the installation of flow transducer is without changing cylinder structure, can not affect the steel structure of oil cylinder, and installation of sensors position is flexible, easy to maintenance.
This shield machine has the oil cylinder displacement detector of above-mentioned shield machine, and has corresponding technique effect.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the oil cylinder displacement detector of existing shield machine;
The structured flowchart of the oil cylinder displacement detector of the shield machine that Fig. 2 provides for the utility model embodiment one;
The structural representation of the oil cylinder displacement detector of the shield machine that Fig. 3 provides for the utility model embodiment two.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The structured flowchart of the oil cylinder displacement detector of the shield machine that Fig. 2 provides for the utility model embodiment one; As shown in Figure 2, this oil cylinder displacement detector comprises flow transducer 3, for the oil cylinder 1 hydraulic oil Volume Changes information of sensing shield machine, and according to described hydraulic oil Volume Changes Information generation sensing flux signal (explaining as pulse signal as example take this sensing flux signal in the present embodiment); Described flow transducer 3 is arranged on the in-line or return line of described oil cylinder 1; High-speed counter 7, for calculating the quantity of described pulse signal, and sends to described controller 4 by result of calculation; Described high-speed counter 7 is connected with described flow transducer 3 signaling lines; Controller 4, for being connected with described high-speed counter 7 signals, and according to the volume change of hydraulic oil in oil cylinder 1 described in the quantity calculative determination of described pulse signal (this calculating operation can be completed by the computing unit of controller (scheming not shown)), and calculate the displacement amount of described oil cylinder 1 according to described volume change.
When specific operation, described high-speed counter 7 can integratedly be arranged in described controller 4, also can independently arrange with described controller 4.Described high-speed counter 7 can be any in single-phase single counter, single-phase double counters and two-phase double counters.The mounting point of flow transducer 3 is flexible, is arranged on the in-line of described oil cylinder 1 or return line and all can.
The working principle of the oil cylinder displacement detector of above-mentioned shield machine is summarized as follows: because the cross-section area S of oil cylinder 1 piston rod determines, in the time that oil cylinder 1 stretches out, from SL=V, piston rod stroke L(is oil cylinder displacement amount) variation can cause the variation of hydraulic oil volume V in rodless cavity, by flow transducer 3 is installed on the in-line at oil cylinder 1 or return line, the quantity of the pulse signal sending by high speed counting module 7 calculated flow rate sensors 3, and import result of calculation into controller 4 and calculate; Its basis is: the relation of hydraulic oil volume and pulse signal quantity, V=Qt=λ n(wherein, Q is the flow of unit time, t is the time, and λ is the conversion constant relevant with fluid and pressure, the quantity that n is pulse signal), be the relation SL=λ n of hydraulic jack stroke and number of pulses n, wherein this parameter n is calculated by high speed counting module 7, and the cross-section area S of rodless cavity inner piston rod determines, can calculate piston rod stroke L.
The present embodiment is by adopting external flow transducer to measure the displacement of oil cylinder, when oil cylinder stretches, cause that the hydraulic oil volume in oil cylinder oil pocket changes, flow transducer can be converted into pulse signal by the variation of hydraulic oil volume, and then calculates pulse signal quantity by high speed counting module, more just can draw the displacement of oil cylinder by the calculating of controller, the installation of flow transducer is without changing cylinder structure, can not affect the steel structure of oil cylinder, and installation of sensors position is flexible, easy to maintenance.
The structured flowchart of the oil cylinder displacement detector of the shield machine that Fig. 3 provides for the utility model embodiment two, the present embodiment and difference embodiment illustrated in fig. 2 are: the sensing flux signal of flow transducer 3 ' output is voltage/current analogue signal, flow transducer 3 ' directly voltage/current analogue signal is sent to controller 4 ', because sensing flux signal is voltage/current analogue signal, flow transducer 3 ' and controller 4 ' between without high-speed counter is set, but by the processing unit (scheming not shown) of controller 4 ' interior according to default voltage/current value and the corresponding relation of flow, determine flow value corresponding to described voltage/current analogue signal, and using the volume change of described flow value hydraulic oil in described oil cylinder, and then calculate the displacement amount of described oil cylinder 1 according to described volume change.
Flow transducer 3 ' mounting point also can select flexibly, as shown in Figure 3, described flow transducer 3 ' be arranged on the hydraulic pipe line 6 being communicated with the rodless cavity of described oil cylinder 1 (is also provided with hydraulic valve block 2 on this hydraulic pipe line 6).Flow transducer 3 ' and Fig. 2 in flow transducer 3 can be vortex street type flow transducer etc., vortex street type flow transducer produces stable eddy current while utilizing liquid to flow through bar, realize flow measurement by measuring its eddy current generation frequency, it can be according to hydraulic oil Volume Changes Information generation pulse signal or analog current signal.
Preferably, the oil cylinder displacement detector of described shield machine can also comprise display device 5, for showing the displacement amount of described oil cylinder 1, described display device 5 connects (being understandable that the display device 5 that also can arrange embodiment illustrated in fig. 2 is to realize same function) with described controller 4 ' signal.By the setting of display device 5, can convenient operation personnel consult in real time the information such as the displacement amount of oil cylinder 1.
The utility model also provides a kind of shield machine, and it comprises oil cylinder, is also provided with the oil cylinder displacement detector of above-mentioned various shield machines.This shield machine has the oil cylinder displacement detector of above-mentioned shield machine, also has corresponding technique effect, repeats no more.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. an oil cylinder displacement detector for shield machine, is characterized in that, comprising:
For the oil cylinder hydraulic oil Volume Changes information of sensing shield machine, and according to the flow transducer of described hydraulic oil Volume Changes Information generation sensing flux signal; Described flow transducer is arranged on the in-line or return line of described oil cylinder;
For determining the volume change of described oil cylinder hydraulic oil according to described sensing flux signal, and calculate the controller of the displacement amount of described oil cylinder according to described volume change, described controller is connected with described flow sensor signal.
2. the oil cylinder displacement detector of shield machine according to claim 1, is characterized in that, described sensing flux signal is pulse signal;
Described oil cylinder displacement detector also comprises the described pulse signal sending for receiving described flow transducer (3), and calculates the quantity of described pulse signal, and result of calculation is sent to the high-speed counter (7) of described controller;
Described controller comprises for according to the computing unit of the volume change of oil cylinder hydraulic oil described in the quantity calculative determination of described pulse signal.
3. the oil cylinder displacement detector of shield machine according to claim 2, is characterized in that, described high-speed counter (7) is integrated to be arranged in described controller.
4. the oil cylinder displacement detector of shield machine according to claim 3, is characterized in that, described high-speed counter (7) is single-phase single counter.
5. the oil cylinder displacement detector of shield machine according to claim 3, is characterized in that, described high-speed counter (7) is single-phase double counters.
6. the oil cylinder displacement detector of shield machine according to claim 3, is characterized in that, described high-speed counter (7) is two-phase double counters.
7. the oil cylinder displacement detector of shield machine according to claim 1, is characterized in that, described sensing flux signal is voltage/current analogue signal; Described controller comprises for according to default voltage/current value and the corresponding relation of flow, determines flow value corresponding to described voltage/current analogue signal, and using the processing unit of described flow value volume change of hydraulic oil in described oil cylinder.
8. according to the oil cylinder displacement detector of shield machine described in any one in claim 1-7, it is characterized in that, also comprise the display device (5) for showing described displacement amount, described display device (5) is connected with described controller signals.
9. the oil cylinder displacement detector of shield machine according to claim 8, is characterized in that, described flow transducer is vortex street type flow transducer.
10. a shield machine, comprises oil cylinder, it is characterized in that, is also provided with the oil cylinder displacement detector of shield machine as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881279.XU CN203702736U (en) | 2013-12-30 | 2013-12-30 | Shield tunneling machine and oil cylinder displacement detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320881279.XU CN203702736U (en) | 2013-12-30 | 2013-12-30 | Shield tunneling machine and oil cylinder displacement detection device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN203702736U true CN203702736U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320881279.XU Expired - Fee Related CN203702736U (en) | 2013-12-30 | 2013-12-30 | Shield tunneling machine and oil cylinder displacement detection device thereof |
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| CN (1) | CN203702736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758822A (en) * | 2013-12-30 | 2014-04-30 | 北京市三一重机有限公司 | Shield tunneling machine and oil cylinder displacement detecting device thereof |
-
2013
- 2013-12-30 CN CN201320881279.XU patent/CN203702736U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758822A (en) * | 2013-12-30 | 2014-04-30 | 北京市三一重机有限公司 | Shield tunneling machine and oil cylinder displacement detecting device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20151230 |
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| EXPY | Termination of patent right or utility model |