CN104533177A - Door locking device and washing and sweeping vehicle - Google Patents
Door locking device and washing and sweeping vehicle Download PDFInfo
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- CN104533177A CN104533177A CN201410827732.8A CN201410827732A CN104533177A CN 104533177 A CN104533177 A CN 104533177A CN 201410827732 A CN201410827732 A CN 201410827732A CN 104533177 A CN104533177 A CN 104533177A
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- latch
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- sliding pin
- door body
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Abstract
The invention relates to a door locking device and a washing and sweeping vehicle. The door locking device comprises a hydraulic oil cylinder. The hydraulic oil cylinder is hinged to a vehicle body and connected with a door in a driving mode, and opening or closing of the door is achieved through power provided by the hydraulic oil cylinder. The door locking device further comprises a bolt and a buckling plate. The bolt is provided with a locking structure matched with the buckling plate, and the buckling plate is fixedly arranged on the vehicle body. The hydraulic oil cylinder is connected with the bolt in a driving mode so that the bolt can be inserted into or pulled out of the buckling plate, and when the bolt is inserted into the buckling plate under driving of the hydraulic oil cylinder, the bolt and the buckling plate can be locked through the locking structure. The door locking device can achieve a stable locking effect and prevent sewage from leaking, and is simple in structure and easy to realize.
Description
Technical field
The present invention relates to environmental sanitation sweeper field, particularly relate to a kind of door body locking device and sweeper.
Background technology
Sweeper is a kind of special road surface working truck, is generally converted by automobile chassis, both can carries out road cleaning pumping operation as sweeping machine separately; Can be used as again high-pressure washing vehicle and carry out road surface flushing pumping operation; Also road cleaning suction can be combined with high-pressure flush and use as sweeper, the multiple combination choice for use realize cleaning, rinsing, aspirate, there is transition speed fast, be suitable for large area, clean at a distance, be usually used in the road cleaning operation of major urban arterial highway, the combination area of city and country, speedway.
Because the maximum difference of sweeper and sweeping machine is that it is with high pressure water circuit system, mainly Street surface cleaning is carried out by the fan-shaped high pressure cascade of long row's spray boom ejection during operation, then rubbish and sewage is reclaimed through suction nozzle, therefore, its for dump rubbish and sewage back door close time, seal request must be had, with the secondary pollution preventing the sewage water clock in garbage transporting process from causing.
Mostly adopt the back door upper end thereof of sweeper in car body in prior art, the mode moved up and down by hydraulic jack control back door opens closing back door, generally flat rubber is adopted to seal between back door and dustbin casing, sealing ring is by bolt or inlay and be fixedly mounted on inside back door, the general pressurize guarantee relying on hydraulic jack of locking, hydraulic jack pressure is larger, and its coupling mechanism force is larger, and sealing ring is compacted tighter.But the hydraulic jack in this structure must install hydraulic lock additional, therefore executive component increase, manufacturing cost strengthen, if do not install hydraulic lock or hydraulic jack leakage additional or lost efficacy, then cannot ensure locking effect, and then cause sewage water clock.
Summary of the invention
The object of the invention is to propose a kind of door body locking device and sweeper, wherein, door body locking device can realize firm locking effect, and structure is simply easy to realize.
For achieving the above object, the invention provides a kind of door body locking device, it comprises hydraulic jack, described hydraulic jack is hinged on car body, described hydraulic jack drives and connects described door body, the power provided by described hydraulic jack realizes opening or closing of described door body, it also comprises latch and latch plate, the locking mechanism cooperatively interacted is provided with on described latch with on described latch plate, described latch plate is fixedly installed on described car body, described hydraulic jack drives and connects described latch, realize described latch insert described latch plate or extract from described latch plate, under the state that described hydraulic jack drives described latch to insert described latch plate, described latch and described latch plate can be locked by described locking mechanism.
One preferably or in embodiment, the described latch structure inserted in described latch plate is wedge structure wide at the top and narrow at the bottom, the inclined-plane of described wedge structure is provided with at least one section of vertical snap close face, described vertical snap close face coordinates with the snap close mouth that described latch plate is arranged, and forms described locking mechanism.
One preferably or in embodiment, also comprise latch fairlead, described latch fairlead is fixedly installed on described door body, and described latch is positioned at described latch fairlead, and can move back and forth in described latch fairlead.
One preferably or in embodiment, also comprise sliding pin and sliding pin guide strip, one end of described sliding pin connects the piston end of described hydraulic jack, and the other end of described sliding pin connects described latch; Described sliding pin guide strip is fixedly installed on described door body, described sliding pin guide strip is provided with gathering sill, described sliding pin is provided with guiding gudgeon, and described guiding gudgeon is positioned at described gathering sill, and can move back and forth along described gathering sill.
One preferably or in embodiment, described sliding pin guide strip comprises two flanks, two described flanks are provided with described gathering sill, and described sliding pin moves back and forth between two described flanks, and the two ends of described guiding gudgeon respectively correspondence are positioned at gathering sill described in.
One preferably or in embodiment, described sliding pin is connected by the piston end of length adjustment mechanism with described hydraulic jack, and/or described sliding pin is connected with described latch by length adjustment mechanism.
One preferably or in embodiment, described length adjustment mechanism is threaded connector, and described sliding pin is threaded connection, the connection with described threaded connector is realized.
One preferably or in embodiment, the length of described gathering sill is greater than the stroke of described latch.
One preferably or in embodiment, described latch plate is provided with several installing hole for being fixedly connected with described car body, described installing hole is strip hole.
One preferably or in embodiment, the position that described latch coordinates grafting to lock with described latch plate is provided with wearing layer.
For achieving the above object, present invention also offers a kind of sweeper, it comprises dustbin casing and is arranged on the back door on described dustbin casing, and it also comprises the door body locking device in above-mentioned any embodiment.
Preferably or in embodiment, described back door is symmetrically arranged with two covers described door body locking device one.
Based on technique scheme, the present invention at least has following beneficial effect:
Door body locking device provided by the invention owing to being provided with the locking mechanism cooperatively interacted on latch with on latch plate, therefore, in spring lock closed procedure, when latch falls in latch plate, can prevent latch from bouncing back by locking mechanism, even if still can locking door body when not installing hydraulic lock or hydraulic jack additional and revealing or lost efficacy, prevent sewage water clock.
Door body locking device provided by the invention, can realize firm locking effect, prevent sewage water clock, and structure is simply easy to realize.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of door body locking device provided by the invention when being applied in locking on a body;
Fig. 2 is the structural representation of door body locking device provided by the invention when being applied in that on a body, latch is extracted;
Fig. 3 is the structural representation that door body locking device provided by the invention is applied in when a body is opened;
Fig. 4 is the structural representation of latch provided by the invention;
Fig. 5 is the structural representation of latch plate provided by the invention.
Attached number in the figure:
1-hydraulic jack; 2-sliding pin; 21-leads gudgeon; 22-length adjustment mechanism; 3-sliding pin guide strip; 31-gathering sill; 4-latch; The vertical snap close face of 41-; 5-latch fairlead; 6-latch plate; 61-snap close mouth; 7-dustbin casing; 8-door body; 9-weather strip.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.In describing the invention, door dignity is inner side to the side of dustbin casing, and the opposite side of door body is outside.
As Figure 1-3, for the illustrative examples of door body locking device provided by the invention, in this illustrative examples, door body locking device comprises hydraulic jack 1, hydraulic jack 1 is hinged on car body, hydraulic jack 1 drives connection door body 8, and the power provided by hydraulic jack 1 realizes opening or closing of door body 8; Door body locking device also comprises latch 4 and latch plate 6, the locking mechanism cooperatively interacted is provided with on latch 4 with on latch plate 6, latch plate 6 is fixedly installed on car body, hydraulic jack 1 drives connecting bolt 4, realize latch 4 insert latch plate 6 or extract from latch plate 6, under the state that hydraulic jack 1 drives latch 4 to insert latch plate 6, latch 4 and latch plate 6 can be locked by locking mechanism.
In above-mentioned illustrative examples, the medial surface of door body 8 can be provided with weather strip 9, and the lateral surface of door body 8 can be provided with a body locking device.
Door body locking device provided by the invention owing to being provided with the locking mechanism cooperatively interacted on latch 4 with on latch plate 6, therefore, in spring lock closed procedure, when latch 4 falls in latch plate 6, can prevent latch 4 from bouncing back by locking mechanism, even if still can locking door body 8 when not installing hydraulic lock additional or hydraulic jack 1 reveals or lost efficacy, prevent sewage water clock.
As shown in Figure 4, in the illustrative examples of door body locking device provided by the invention, latch 4 top can be column construction, the part that latch 4 inserts in latch plate 6 can for wedge structure wide at the top and narrow at the bottom, the inclined-plane of wedge structure is provided with the vertical snap close face 41 (positioning step) that at least one section of vertical direction is parallel to a body 8 lateral surface, form stepped wedge structure, vertical snap close face 41 and the snap close mouth 61 that latch plate 6 is arranged (as Fig. 5 so) coordinate, and form locking mechanism.
When latch 4 inserts latch plate 6, if there is the active force extruding latch 4 from door body 8, because latch 4 adopts vertical snap close face 41 to coordinate with snap close mouth 61, therefore, the thrust that latch 4 is subject to horizontal direction can not upload on the inclined-plane of wedge structure, can limit latch 4 and bounce back because of the opposite force effect by lozenges, therefore, even if when not installing hydraulic lock additional or hydraulic jack 1 reveals or lost efficacy, still can locking door body 8, prevent sewage water clock.
In the illustrative examples of door body locking device provided by the invention, door body locking device can also comprise latch fairlead 5, latch fairlead 5 is fixedly installed on the lateral surface of a body 8, its inside dimension size coordinates with the appearance and size of the column construction on latch 4 top, latch 4 is positioned at latch fairlead 5, and can move back and forth in latch fairlead 5.
In the illustrative examples of door body locking device provided by the invention, door body locking device can also comprise sliding pin 2 and sliding pin guide strip 3, the piston end of one end (top) the connecting fluid compressing cylinder 1 of sliding pin 2, the top of the other end (bottom) connecting bolt 4 of sliding pin 2; Sliding pin guide strip 3 can be fixedly installed on a body 8, and be vertically arranged at directly over latch fairlead 5, sliding pin guide strip 3 can be provided with the gathering sill 31 that vertical direction is parallel to a body 8 lateral surface, sliding pin 2 can be provided with guiding gudgeon 3, the width dimensions of gathering sill 31 coordinates with the appearance and size of guiding gudgeon 3, guiding gudgeon 3 is positioned at gathering sill 31, and can be parallel to the lateral surface reciprocating motion of a body 8 along gathering sill 31.The whole height of the wedge structure of latch 4 is less than the length of gathering sill 31, or the length of gathering sill 31 is greater than the stroke of latch 4.
In the illustrative examples of door body locking device provided by the invention, sliding pin guide strip 3 can comprise two symmetrically arranged flanks, two flanks all can be provided with gathering sill 31, span between two flanks coordinates with the appearance and size of sliding pin 2, sliding pin 2 moves back and forth between two flanks, as preferred version of the present invention, guiding gudgeon 3 horizontal symmetrical can be arranged at the both sides of sliding pin 2, make sliding pin 2 entirety in " ten " character form structure, the two ends of guiding gudgeon 3 respectively correspondence are positioned at a gathering sill 31.
In above-mentioned illustrative examples, the fit system of guiding gudgeon 3 and gathering sill 31 can adopt the fit system of T-shape slot, also can adopt the fit system of bearing pin and slideway, because the latter is easier to processing, installs, and therefore preferred the latter.
For the ease of the compression degree of adjustment doors body 8 medial surface weather strip 9, i.e. sealing effectiveness, in the illustrative examples of door body locking device provided by the invention, the upper end of sliding pin 2 can be connected with the piston end of hydraulic jack 1 by length adjustment mechanism 22, and/or the lower end of sliding pin 2 can be connected with latch 4 by length adjustment mechanism 22.By the length regulating the length of length adjustment mechanism 22 to realize adjustment sliding pin 2, and then realize the extension elongation of regulating pin 4, thus realize the compression degree of adjustment doors body 8 medial surface weather strip 9.
In above-mentioned illustrative examples, length adjustment mechanism 22 can be threaded connector, and sliding pin 2 is threaded connection, and realizes the connection with threaded connector, and rotational slide pin 2 and the connection of threaded connector, can adjust the length of sliding pin 2.
As shown in Figure 5, in the illustrative examples of door body locking device provided by the invention, latch plate 6 is provided with several installing hole for being fixedly connected with car body, for the ease of the compression degree of adjustment doors body 8 medial surface weather strip 9, i.e. sealing effectiveness, installing hole can be set to the strip hole of fore-and-aft direction, and the front and back diverse location installed by adjustment latch plate 6 realizes the compression degree of adjustment doors body 8 medial surface weather strip 9.
Wearing and tearing in long-term cooperating process to prevent the stepped wedge structure of the snap close mouth 61 of latch plate 6 and latch 4 bottom causes a body 8 medial surface weather strip 9 compacting can not cause seepage, in the illustrative examples of door body locking device provided by the invention, the position that latch 4 coordinates grafting to lock with latch plate 6 is provided with wearing layer.That is: snap close mouth 61 all arranges wearing layer with the inner surface of stepped wedge respective outer side edges of latch 4 bottom and the wedge-shaped surface of the stepped wedge structure of latch 4 bottom.
Door body locking device provided by the invention can be applied in sweeper or other have on the special vehicle of seal request.
In the illustrative examples of sweeper provided by the invention, the back door that sweeper comprises dustbin casing 7 and is arranged on dustbin casing 7, it also comprises the door body locking device in above-mentioned any embodiment, and the cylinder bottom end of the hydraulic jack 1 in door body locking device can be connected by the upper rear end of hinged seat with dustbin casing 7.Latch plate 6 in door body locking device is just arranged latch 4, and one end level of latch plate 6 is fixedly installed in the bottom of dustbin casing 7, and the other end of latch plate 6 is provided with just to the snap close mouth 61 of latch 4, the size of snap close mouth 61 and latch 4 dimensional fits.
In the illustrative examples of sweeper provided by the invention, back door can be symmetrically arranged with two cover door body locking devices.
Illustrate the method for operating of a specific embodiment of door body locking device provided by the invention below:
Door opening process (as shown in FIG. 1 to 3):
The piston end retraction of hydraulic jack 1, the lateral surface driving sliding pin 2 and latch 4 to be parallel to a body 8 moves up, the wedge structure of latch 4 bottom moves upward and departs from the snap close mouth 61 (as shown in Figure 2) of latch plate 6, when the guiding gudgeon 3 of sliding pin 2 rises to the apical position of gathering sill 31, the piston end retraction of hydraulic jack 1, namely door body 8 is driven to be fixedly connected on the top pin joint Unscrew (as shown in Figure 3) of dustbin casing 7 along it, now the guiding gudgeon 3 of sliding pin 2 is in the apical position of gathering sill 31 due to the effect of door body 8 self gravitation always, dustbin casing 7 can be opened after opening to extreme position and topple over loop, dustbin casing 7 front end is dumped oil cylinder jack-up and dumps rubbish.
Door closing procedure:
Dustbin casing 7 is in level, the piston end of hydraulic jack 1 stretches out, door body 8 is due to self gravitation effect whereabouts, the piston of hydraulic jack 1 is held door body 8 and is slowly fallen, now the guiding gudgeon 3 of sliding pin 2 is in the apical position of gathering sill 31 always, door body 8 continues to fall, namely vertical state is in after the weather strip 9 of door body 8 medial surface contacts dustbin casing 7, door body 8 Gravitative Loads disappears, the piston end of hydraulic jack 1 continues to stretch out, promotion sliding pin 2 and latch 4 are parallel to a body 8 and move down, namely the stepped wedge structure of latch 4 bottom is inserted in the snap close mouth 61 of latch plate 6, door body 8 under the guiding squeezing action of the stepped wedge structure of latch 4 bottom, press close to dustbin casing 7 and the weather strip 9 of compacting medial surface realizes sealing, snap in after in snap close mouth 61 when latch 4 falls to vertical snap close face 41, namely spring lock closed procedure is completed.
In order to increase the uniform compaction degree of a body 8 medial surface weather strip 9 further, prevent from the local distortion because of door body 8 from causing cannot seal, scheme as a further improvement on the present invention, hydraulic jack 1, sliding pin 2, sliding pin guide strip 3, latch 4, latch fairlead 5 and latch plate 6 all can arrange two covers, are symmetricly set on car body rear end face.
By the description of each embodiment above-mentioned, door body locking device provided by the invention can be derived, at least have the following advantages:
1) wedge structure of latch 4 bottom is stepped owing to being arranged to, namely wedge structure inclined-plane is arranged the vertical snap close face 41 that at least one vertical direction is parallel to a body 8, i.e. positioning step, therefore in spring lock closed procedure, snap in after in snap close mouth 61 when latch 4 falls to vertical snap close face 41, vertical snap close face 41 can limit latch 4 and bounce back because of the opposite force effect by lozenges, even if still can locking door body 8 when not installing hydraulic lock additional or hydraulic jack 1 reveals or lost efficacy, prevent sewage water clock.
2) installing hole upper end of sliding pin 2 or lower end being provided with one end that length adjustment mechanism 22 or latch plate 6 level are fixedly installed in bottom dustbin casing 7 is set to the strip hole of fore-and-aft direction, therefore conveniently can adjust the press seal degree of door body 8 medial surface weather strip 9.
In sum, door body locking device provided by the invention, structure is simply easy to realize, and can realize firm locking effect, prevents sewage water clock.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (12)
1. a door body locking device, comprise hydraulic jack (1), described hydraulic jack (1) is hinged on car body, described hydraulic jack (1) drives and connects described door body (8), the power provided by described hydraulic jack (1) realizes opening or closing of described door body (8), it is characterized in that: also comprise latch (4) and latch plate (6), described latch (4) above with on described latch plate (6) is provided with the locking mechanism cooperatively interacted, described latch plate (6) is fixedly installed on described car body, described hydraulic jack (1) drives and connects described latch (4), realize described latch (4) insert described latch plate (6) or extract from described latch plate (6), under the state that described hydraulic jack (1) drives described latch (4) to insert described latch plate (6), described latch (4) and described latch plate (6) can be locked by described locking mechanism.
2. as claimed in claim 1 body locking device, it is characterized in that: described latch (4) structure inserted in described latch plate (6) is wedge structure wide at the top and narrow at the bottom, the inclined-plane of described wedge structure is provided with at least one section of vertical snap close face (41), described vertical snap close face (41) coordinates with the upper snap close mouth (61) arranged of described latch plate (6), forms described locking mechanism.
3. as claimed in claim 1 body locking device, it is characterized in that: also comprise latch fairlead (5), described latch fairlead (5) is fixedly installed on described door body (8), described latch (4) is positioned at described latch fairlead (5), and can move back and forth in described latch fairlead (5).
4. the door body locking device as described in any one of claim 1-3, it is characterized in that: also comprise sliding pin (2) and sliding pin guide strip (3), one end of described sliding pin (2) connects the piston end of described hydraulic jack (1), and the other end of described sliding pin (2) connects described latch (4); Described sliding pin guide strip (3) is fixedly installed on described door body (8), described sliding pin guide strip (3) is provided with gathering sill (31), described sliding pin (2) is provided with guiding gudgeon (21), described guiding gudgeon (21) is positioned at described gathering sill (31), and can move back and forth along described gathering sill (31).
5. as claimed in claim 4 body locking device, it is characterized in that: described sliding pin guide strip (3) comprises two flanks, two described flanks are provided with described gathering sill (31), described sliding pin (2) moves back and forth between two described flanks, and the two ends of described guiding gudgeon (21) respectively correspondence are positioned at gathering sill described in (31).
6. as claimed in claim 4 body locking device, it is characterized in that: described sliding pin (2) is connected by the piston end of length adjustment mechanism (22) with described hydraulic jack (1), and/or described sliding pin (2) is connected with described latch (4) by length adjustment mechanism (22).
7. as claimed in claim 6 body locking device, is characterized in that: described length adjustment mechanism (22) is threaded connector, and described sliding pin (2) is threaded connection, and realizes the connection with described threaded connector.
8. as claimed in claim 4 body locking device, is characterized in that: the length of described gathering sill (31) is greater than the stroke of described latch (4).
9. as claimed in claim 1 body locking device, is characterized in that: described latch plate (6) is provided with several installing hole for being fixedly connected with described car body, described installing hole is strip hole.
10. as claimed in claim 1 body locking device, is characterized in that: the position that described latch (4) coordinates grafting to lock with described latch plate (6) is provided with wearing layer.
11. 1 kinds of sweepers, comprise dustbin casing (7) and are arranged on the back door on described dustbin casing (7), it is characterized in that: also comprise the door body locking device as described in any one of claim 1-10.
12. sweepers as claimed in claim 11, is characterized in that: described back door is symmetrically arranged with two covers described door body locking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827732.8A CN104533177B (en) | 2014-12-26 | 2014-12-26 | Door body locking device and sweeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410827732.8A CN104533177B (en) | 2014-12-26 | 2014-12-26 | Door body locking device and sweeper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533177A true CN104533177A (en) | 2015-04-22 |
| CN104533177B CN104533177B (en) | 2017-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410827732.8A Active CN104533177B (en) | 2014-12-26 | 2014-12-26 | Door body locking device and sweeper |
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| Country | Link |
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| CN (1) | CN104533177B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107905644A (en) * | 2017-10-27 | 2018-04-13 | 上海敏泰液压股份有限公司 | People's air defense series safeguard opening/closing system and opening and closing locking method |
| CN108589606A (en) * | 2018-03-26 | 2018-09-28 | 扬州三源机械有限公司 | A kind of sweeper |
| CN109681027A (en) * | 2019-02-01 | 2019-04-26 | 北京清源华建环境科技有限公司 | A kind of locker for rinsing door rinses door and control method |
| CN110274059A (en) * | 2019-06-25 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | The locking flap valve of pressure-bearing type and its application method in water is changed in reservoir siphon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905644A (en) * | 2017-10-27 | 2018-04-13 | 上海敏泰液压股份有限公司 | People's air defense series safeguard opening/closing system and opening and closing locking method |
| CN108589606A (en) * | 2018-03-26 | 2018-09-28 | 扬州三源机械有限公司 | A kind of sweeper |
| CN109681027A (en) * | 2019-02-01 | 2019-04-26 | 北京清源华建环境科技有限公司 | A kind of locker for rinsing door rinses door and control method |
| CN109681027B (en) * | 2019-02-01 | 2023-09-22 | 湖南清源华建环境科技有限公司 | Locking device for flushing door, flushing door and control method |
| CN110274059A (en) * | 2019-06-25 | 2019-09-24 | 水利部交通运输部国家能源局南京水利科学研究院 | The locking flap valve of pressure-bearing type and its application method in water is changed in reservoir siphon |
| CN110274059B (en) * | 2019-06-25 | 2024-04-02 | 水利部交通运输部国家能源局南京水利科学研究院 | Bearing type flapper with lock and use method thereof in reservoir siphon water change |
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| Publication number | Publication date |
|---|---|
| CN104533177B (en) | 2017-10-31 |
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