CN109911537A - A kind of ladder engineering material vertical transport equipment - Google Patents

A kind of ladder engineering material vertical transport equipment Download PDF

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Publication number
CN109911537A
CN109911537A CN201910262001.6A CN201910262001A CN109911537A CN 109911537 A CN109911537 A CN 109911537A CN 201910262001 A CN201910262001 A CN 201910262001A CN 109911537 A CN109911537 A CN 109911537A
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China
Prior art keywords
track
ladder
mounting plate
transport
upper mounting
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CN201910262001.6A
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Chinese (zh)
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CN109911537B (en
Inventor
沈豪皇
郭志坚
王晖
黄轩
吴丽婷
余有
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China State Construction Oriental Decoration Co Ltd
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China State Construction Oriental Decoration Co Ltd
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Priority to CN201910262001.6A priority Critical patent/CN109911537B/en
Publication of CN109911537A publication Critical patent/CN109911537A/en
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Publication of CN109911537B publication Critical patent/CN109911537B/en
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Abstract

The invention discloses a kind of ladder engineering material vertical transport equipments, including upper mounting plate track, ladder track, lower platform track and pulling equipment, wherein ladder track is set up on ladder by several brackets, then it is transported from the rolling of upper mounting plate track to ladder track by elevator machine travel transport carrier, transport is rolled again to lower platform track, realization transports engineering material onto ladder lower platform from ladder upper mounting plate, avoids manpower transport;And ladder provided by the invention in engineering material vertical transport equipment upper mounting plate track, ladder track and lower platform track it is detachable, facilitate the fast construction of vertical transport equipment and withdraw at any time with it is mobile.

Description

A kind of ladder engineering material vertical transport equipment
Technical field
The invention belongs to engineering material transporting equipment fields more particularly to a kind of ladder to be set with engineering material vertical transport It is standby.
Background technique
Currently, big city generally all has subway station, the daily flow of the people of subway station is big, is the main traffic work of people's trip Tool.It often may require that finishing or engineering construction in subway station, since the ground floor of subway station is to station hall layer, station hall layer to platform Layer is usually stepped channel, inconvenient to the carrying of engineering material, is the normal operation for not influencing subway station, typically now all borrows Engineering material is transported to job location by power of helping others, and manpower transport's not only low efficiency, at high cost more has some potential safety problems, Therefore, it is badly in need of developing a set of engineering material transporting equipment for being exclusively used in ladder.
Summary of the invention
The object of the present invention is to provide a kind of ladder engineering material vertical transport equipments, solve the engineering of stepped channel Transport of materials problem.
To solve the above problems, the technical solution of the present invention is as follows:
A kind of ladder engineering material vertical transport equipment, including upper mounting plate track, ladder track, lower platform track and Pulling equipment;
The upper mounting plate track, including the first upper mounting plate track, the second upper mounting plate track and several segments first crossbar, institute It states the first upper mounting plate track and the second upper mounting plate track is parallel to each other and perpendicular steps are placed on upper mounting plate, described first Also detachably be arranged in parallel with first crossbar described in several segments between upper mounting plate track and the second upper mounting plate track, it is described on Platform track is used for engineering material feeding;
The ladder track, comprising:
Several brackets, the bracket include support construction and connection structure, and the support construction bottom end is placed on step, It is used to support the ladder track, the connection structure is placed in the upper end of the support construction, for connecting the ladder track;
First ladder track is placed between the first upper mounting plate track and the first lower platform track, including several Section the first transport beam, adjacent the first transport beam passes sequentially through the connection structure and is detachably connected, close to described first The first transport beam of upper mounting plate track is that primary first transports beam, the upper end and described first of the primary first transport beam Upper mounting plate track is detachably connected close to one end of the ladder, close to the first transport beam of the first lower platform track Beam is transported for final stage first, the lower end of the transport of final stage first beam and the first lower platform track are close to the one of the ladder End is detachably connected;
Second ladder track is placed between the second upper mounting plate track and the second lower platform track, including several Section the second transport beam, adjacent the second transport beam passes sequentially through the connection structure and is detachably connected, close to described second The second transport beam of upper mounting plate track is that primary second transports beam, the upper end and described second of the primary second transport beam Upper mounting plate track is detachably connected close to one end of the ladder, close to the second transport beam of the second lower platform track Beam is transported for final stage second, the lower end of the transport of final stage second beam and the second lower platform track are close to the one of the ladder End is detachably connected;
The lower platform track, including the first lower platform track, the second lower platform track and several segments second crossbar, institute It states the first lower platform track and the second lower platform track is parallel to each other and perpendicular steps are placed on lower platform, described first It is also detachably arranged in parallel with second crossbar described in several segments between lower platform track and the second lower platform track, under described Platform track is used for engineering material blanking;
The pulling equipment, the upper mounting plate are equipped with the pulling equipment, the pulling equipment and transport carrier power Connection, runs on the ladder track for drawing the transport carrier.
Preferably, the support construction includes the first support construction and the second support construction, and the connection structure includes the One connection structure and the second connection structure, the first support construction top are equipped with support beam, second support construction Upper end is movably connected in the support beam, and second support construction can be changed arbitrarily relative to first support construction Angle, first connection structure and second connection structure are placed in the both ends of the support beam, the first connection knot Structure is used to connect adjacent the first transport beam, and second connection structure is used to connect adjacent the second transport beam.
Preferably, the pulling equipment uses hoist engine, and the hoist engine is extended with carrying cable, the carrying cable system It is run on the transport carrier, drawing the transport carrier on the ladder track.
Preferably, the upper mounting plate is equipped with the bracket of hoisting machine for fixing the hoist engine, the bracket of hoisting machine It is anchored on the upper mounting plate, the hoist engine is placed in the top of the bracket of hoisting machine.
Preferably, it is equipped in the second crossbar close to the first crossbar of the ladder and far from the ladder At least one hydraulic stop device.
It preferably, further include PLC electric control unit, the PLC electric control unit is electrically connected with the pulling equipment, For controlling starting and stopping for the pulling equipment.
Preferably, the upper mounting plate track and the lower platform track are set as slope shape far from one end of the ladder.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art Fruit:
The present invention provides a kind of ladder engineering material vertical transport equipment, including upper mounting plate track, ladder track, under Platform track and pulling equipment, wherein it is set on ladder by ladder track by several brackets, then passes through hoist engine Traction transport carrier is transported from the rolling of upper mounting plate track to ladder track, then rolls transport to lower platform track, is realized engineering Material is transported from ladder upper mounting plate onto ladder lower platform, avoids manpower transport;And ladder engineering material provided by the invention Upper mounting plate track, ladder track and lower platform track in material vertical transport equipment is detachable, facilitates vertical transport equipment Fast construction and withdraw at any time with it is mobile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ladder engineering material vertical transport equipment;
Fig. 2 is the structural schematic diagram of the upper horizontal rail and ladder track in Fig. 1;
Fig. 3 is the structural schematic diagram of the lower horizontal track in Fig. 1;
Fig. 4 is the structural schematic diagram of the bracket in Fig. 1.
Description of symbols:
1: upper mounting plate track;11: the first upper mounting plate tracks;12: the second upper mounting plate tracks;13: first crossbar;2: ladder rail Road;21: bracket;211: connection structure;2111: the first connection structures;2112: the second connection structures;212: support construction; 2121: the first support constructions;21211: support beam;2122: the second support constructions;22: the first ladder tracks;221: the first fortune Defeated beam;23: the second ladder tracks;231: the second transport beams;3: lower platform track;31: the first lower platform tracks;Under 32: the second Platform track;33: second crossbar;4: pulling equipment;41: hoist engine;42: bracket of hoisting machine;5: hydraulic stop device;6: transport carries Tool.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to a kind of ladder engineering material vertical transport equipment proposed by the present invention Transport carrier is described in further detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.
Embodiment one
Referring to shown in Fig. 1, Fig. 1 is the structure chart of ladder engineering material vertical transport equipment, and the present invention provides one kind Ladder engineering material vertical transport equipment, including upper mounting plate track 1, ladder track 2, lower platform track 3 and pulling equipment 4;
Referring to shown in Fig. 2, Fig. 2 is the structural schematic diagram of the upper horizontal rail 1 and ladder track 2 in Fig. 1, upper mounting plate track 1, including the first upper mounting plate track 11, the second upper mounting plate track 12 and several segments first crossbar 13, the first upper mounting plate track 11 It is parallel to each other with the second upper mounting plate track 12 and is placed on upper mounting plate towards ladder, put down on the first upper mounting plate track 11 and second Several segments first crossbar 13 is also detachably arranged in parallel between platform track 12, upper mounting plate track 1 is used for engineering material feeding;
Ladder track 2, including several brackets 21, bracket 21 include support construction 212 and connection structure 211, support knot 212 bottom end of structure is placed on step, is used to support ladder track 2, connection structure 211 is placed in the upper end of support construction 212, for connecting Connect ladder track 2;First ladder track 22 is placed between the first upper mounting plate track 11 and the first lower platform track 31, if including Dry the first transport of section beam 221, the first adjacent transport beam 221 passes sequentially through connection structure 211 and is detachably connected, on first First transport beam 221 of platform track 11 is that primary first transports beam, and primary first transports upper end and the first upper mounting plate rail of beam Road 11 is detachably connected close to one end of ladder, and the first transport beam 221 close to the first lower platform track 31 is the fortune of final stage first Defeated beam, the lower end that final stage first transports beam are detachably connected with the first lower platform track 31 close to one end of ladder;Second ladder Track 23 is placed between 32 track of the second upper mounting plate track 12 and the second lower platform, including several sections second transport beam 231, phase The second adjacent transport beam 231 passes sequentially through connection structure 211 and is detachably connected, close to the second transport of the second upper mounting plate track 12 Beam 231 is that primary second transports beam, and primary second transports the upper end of beam and the second upper mounting plate track 12 can close to one end of ladder Dismantling connection, the second transport beam 231 close to the second lower platform track 32 are that final stage second transports beam, and final stage second transports beam Lower end is detachably connected with the second lower platform track 32 close to one end of ladder;
Shown in referring to Fig. 3, structural schematic diagram of the Fig. 3 for the lower horizontal track in Fig. 1, lower platform track 3, including under first Platform track 31, the second lower platform track 32 and several segments second crossbar 33, the first lower platform track 31 and the second lower platform Track 32 is parallel to each other and is placed on lower platform towards ladder, between the first lower platform track 31 and the second lower platform track 32 It is also detachably arranged in parallel with several segments second crossbar 33, lower platform track 3 is used for engineering material blanking;
Pulling equipment 4, upper mounting plate are equipped with pulling equipment 4, and pulling equipment 4 is connected by power with transport carrier 6, for drawing Transport carrier 6 is run on ladder track.
The present invention provides a kind of ladder engineering material vertical transport equipments, including ladder track 2, are propped up by several Ladder track 2 is set up on ladder by frame 21, is then drawn transport carrier 6 by pulling equipment 4 and is rolled fortune on ladder track 2 It is defeated, engineering material is transported from ladder upper mounting plate onto ladder lower platform, manpower transport is avoided;And ladder provided by the invention It is detachable with upper mounting plate track 1, ladder track 2 and the lower platform track 3 in engineering material vertical transport equipment, it is convenient to hang down The fast construction of straight transporting equipment and withdraw at any time with it is mobile.
Upper mounting plate track 1, including the first upper mounting plate track 11, the second upper mounting plate track 12 and several segments first crossbar 13, the first upper mounting plate track 11 and the second upper mounting plate track 12 are parallel to each other and are placed on upper mounting plate perpendicular to step, and first It is also detachably arranged in parallel with several segments first crossbar 13 between upper mounting plate track 11 and the second upper mounting plate track 12, in this implementation In example, three sections of first crossbars 13 are provided with to parallel equidistant between the first upper mounting plate track 11 and the second upper mounting plate track 12.It leans on The first crossbar 13 of nearly ladder is equipped with hydraulic stop device 5, for controlling the upper discharge position of transport carrier 6, when by transport carrier 6 When pushing on upper mounting plate track 1, hydraulic stop device 5 is in the state boosted, to block transport carrier 6, limits transport carrier 6 It moves on, then carrier to be transported 6 connects and ladder engineering material vertical transport equipment all preparations with pulling equipment 4 Ready, hydraulic stop device 5 is in the state packed up, and transport carrier 6 moves under the traction of pulling equipment 4 along upper mounting plate track 1 To ladder track 2 finally to lower horizontal track 3, in the present embodiment, the left and right ends close to the first crossbar 13 of ladder are respectively set There is a hydraulic stop device 5.In the present embodiment, upper mounting plate track 1 is set as slope shape far from one end of ladder, convenient for that will transport Carrier 6 is directly pushed on upper mounting plate track 1.
Ladder track 2, including several brackets 21, the first ladder track 22 and the second ladder track 23.
Bracket 21 includes support construction 212 and connection structure 211, and 212 bottom end of support construction is placed on step, is used to support Ladder track 2, connection structure 211 are placed in the upper end of support construction 212, for connecting ladder track 2.Referring to shown in Fig. 4, Fig. 4 For the structural schematic diagram of the bracket in Fig. 1, in the present embodiment, support construction 212 includes the first support construction 2121 and second Support construction 2122, connection structure 211 include the first connection structure 2111 and the second connection structure 2112, the first support construction 2121 tops are equipped with support beam 21211, and the upper end of the second support construction 2122 is movably connected in support beam 21211, the Two support constructions 2122 can arbitrarily change angle, the first support construction 2121 and the second support relative to the first support construction 2121 2122 height of structure is consistent;First connection structure 2111 and the second connection structure 2112 are placed in the both ends of support beam 21211, and The equivalent width of spacing and ladder track 2 between first connection structure 2111 and the second connection structure 2112, the first connection knot Structure 2111 is for connecting the first ladder track 22, and the second connection structure 2112 is for connecting the second ladder track 23.
First ladder track 22 is placed between the first upper mounting plate track 11 and the first lower platform track 31, including several sections First transport beam 221, the first adjacent transport beam 221 passes sequentially through the first connection structure 2111 and is detachably connected, close to first First transport beam 13 of upper mounting plate track 11 is that primary first transports beam, and primary first transports upper end and the first upper mounting plate rail of beam Road 11 is detachably connected close to one end of ladder, and the first transport beam 221 close to the first lower platform track 31 is the fortune of final stage first Defeated beam, the lower end that final stage first transports beam are detachably connected with the first lower platform track 31 close to one end of ladder,
Second ladder track 23 is placed between the second upper mounting plate track 12 and the second lower platform track 32, including several sections Second transport beam 231, the second adjacent transport beam 231 passes sequentially through the second connection structure 2112 and is detachably connected, close to second Second transport beam 231 of upper mounting plate track 12 is that primary second transports beam, and primary second transports upper end and the second upper mounting plate of beam Track 12 is detachably connected close to one end of ladder, and the second transport beam 231 close to the second lower platform track 32 is final stage second Beam is transported, the lower end that final stage second transports beam is detachably connected with the second lower platform track 32 close to one end of ladder, in this reality Apply in example, by the connecting plate of one piece of width and 2 equivalent width of ladder track, the connecting plate along ladder track width direction one The upper end that primary first transports beam is connect with the first upper mounting plate track 11 close to one end of ladder by end by screw thread hole, should The other end of connecting plate is by screw thread hole by the upper end of primary the second transport beam and the second upper mounting plate track 12 close to ladder One end connection, final stage first transports the lower end of beam and the first lower platform track 31 is transported close to one end of ladder and final stage second One end connection type of the lower end of defeated beam with the second lower platform track 32 close to ladder is same as above, not tired herein to state;
Lower platform track 3, including the first lower platform track 31, the second lower platform track 32 and several segments second crossbar 33, the first lower platform track 31 and the second lower platform track 32 are parallel to each other and are placed on lower platform perpendicular to step, and first It is also detachably arranged in parallel with several segments second crossbar 33 between lower platform track 31 and the second lower platform track 32, in this implementation In example, three sections of second crossbars 33 are provided with to parallel equidistant between the first lower platform track 31 and the second lower platform track 32.Far Second crossbar 33 from ladder is equipped with hydraulic stop device 5, for controlling the lower discharge position of transport carrier 6, when transport carrier 6 exists When being moved on lower platform track 3 under the traction of pulling equipment 4 from ladder track 2, hydraulic stop device 5 is in the state boosted, So as to block transport carrier 6, limitation transport carrier 6 is moved on, and then carrier 6 to be transported is separated from pulling equipment 4, Hydraulic stop device 5 is in the state packed up, to transport carrier 6 be shifted on lower platform from lower platform track 3, to realize Engineering material is transported to lower platform from upper mounting plate, and in the present embodiment, the left and right ends of the second crossbar 33 far from ladder are each Equipped with a hydraulic stop device 5.In the present embodiment, lower platform track 3 is set as slope shape far from one end of ladder, convenient for that will transport Defeated carrier 6 is directly shifted on lower platform from lower platform track 3.
Pulling equipment 4, upper mounting plate are equipped with pulling equipment 4, and pulling equipment 4 is connected by power with transport carrier 6, for drawing Transport carrier 4 is run on ladder track 3.In the present embodiment, pulling equipment 4 uses hoist engine 41, and hoist engine, which is extended with, to be led Drawing wirerope, carrying cable is lain on transport carrier 6, traction transport carrier 6 is run on ladder track 3, in the present embodiment, It is additionally provided with the bracket of hoisting machine 42 for wire rope hoist 41 on upper mounting plate, is portal frame, the lower end of bracket of hoisting machine 42 passes through Di rect-buried bolt is anchored on upper mounting plate, and hoist engine 41 is mounted on the centre of the crossbeam of portal frame.
As shown in figure 3, in the present embodiment, transport carrier 6 is a customization transport vehicle, including wagon box, rolling transport axis And transport wheel is rolled, there is the baffle higher than wagon box before and after wagon box, limited to engineering material, is installed respectively on front and rear baffle Two hanging rings, carrying cable lie on hanging ring and are drawn.Former and later two wide Limit Bearings are installed in wagon box bottom, to It is rolled on track.Two large size rubber wheels are installed in two sides on the limit shaft of front side, to transport use, peace on rear side of wagon box on the ground Two small size auxiliary rubber wheels are filled, are separated with bearing.
Preferably, ladder engineering material vertical transport equipment provided by the invention further includes PLC electric control unit, PLC electric control unit is electrically connected with hoist engine 41, for controlling starting and stopping for hoist engine 41.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies Within enclosing, then still fall within the protection scope of the present invention.

Claims (7)

1. a kind of ladder engineering material vertical transport equipment, which is characterized in that including upper mounting plate track, ladder track, lower flat Platform track and pulling equipment;
The upper mounting plate track, including the first upper mounting plate track, the second upper mounting plate track and several segments first crossbar, described One upper mounting plate track and the second upper mounting plate track is parallel to each other and perpendicular steps are placed on upper mounting plate is put down on described first First crossbar described in several segments, the upper mounting plate are also detachably arranged in parallel between platform track and the second upper mounting plate track Track is used for engineering material feeding;
The ladder track, comprising:
Several brackets, the bracket include support construction and connection structure, and the support construction bottom end is placed on step, is used for The ladder track is supported, the connection structure is placed in the upper end of the support construction, for connecting the ladder track;
First ladder track is placed between the first upper mounting plate track and the first lower platform track, including several sections One transport beam, adjacent the first transport beam pass sequentially through the connection structure and are detachably connected, put down on described first The first transport beam of platform track is that primary first transports beam, is put down on the upper end and described first of the primary first transport beam Platform track is detachably connected close to one end of the ladder, close to the first transport Liang Weimo of the first lower platform track Grade first transports beam, and the final stage first transports the lower end of beam and the first lower platform track can close to one end of the ladder Dismantling connection;
Second ladder track is placed between the second upper mounting plate track and the second lower platform track, including several sections Two transport beams, adjacent the second transport beam pass sequentially through the connection structure and are detachably connected, put down on described second The second transport beam of platform track is that primary second transports beam, is put down on the upper end and described second of the primary second transport beam Platform track is detachably connected close to one end of the ladder, close to the second transport Liang Weimo of the second lower platform track Grade second transports beam, and the final stage second transports the lower end of beam and the second lower platform track can close to one end of the ladder Dismantling connection;
The lower platform track, including the first lower platform track, the second lower platform track and several segments second crossbar, described Platform track and the second lower platform track is parallel to each other and perpendicular steps are placed on lower platform once, described first is lower flat Second crossbar described in several segments, the lower platform are also detachably arranged in parallel between platform track and the second lower platform track Track is used for engineering material blanking;
The pulling equipment, the upper mounting plate are equipped with the pulling equipment, and the pulling equipment is connected by power with transport carrier, It is run on the ladder track for drawing the transport carrier.
2. ladder according to claim 1 engineering material vertical transport equipment, which is characterized in that the support construction packet The first support construction and the second support construction are included, the connection structure includes the first connection structure and the second connection structure, described Support beam is equipped at the top of first support construction, the upper end of second support construction is movably connected in the support beam, Second support construction can arbitrarily change angle, first connection structure and described relative to first support construction Two connection structures are placed in the both ends of the support beam, and first connection structure is used to connect adjacent first transport Beam, second connection structure are used to connect adjacent the second transport beam.
3. ladder according to claim 1 engineering material vertical transport equipment, which is characterized in that the pulling equipment is adopted With hoist engine, the hoist engine is extended with carrying cable, and the carrying cable is lain on the transport carrier, draws the transport Carrier is run on the ladder track.
4. ladder according to claim 3 engineering material vertical transport equipment, which is characterized in that set on the upper mounting plate There is the bracket of hoisting machine for fixing the hoist engine, the bracket of hoisting machine is anchored on the upper mounting plate, the hoist engine It is placed in the top of the bracket of hoisting machine.
5. ladder according to claim 1 engineering material vertical transport equipment, which is characterized in that close to the ladder At least one hydraulic stop device is equipped in the first crossbar and the second crossbar of the separate ladder.
6. ladder according to claim 1 engineering material vertical transport equipment, which is characterized in that further include PLC electrical Control unit, the PLC electric control unit are electrically connected with the pulling equipment, for control the pulling equipment starting and Stop.
7. ladder according to claim 1 engineering material vertical transport equipment, which is characterized in that the upper mounting plate track Slope shape is set as far from one end of the ladder with the lower platform track.
CN201910262001.6A 2019-04-02 2019-04-02 Engineering material vertical transportation equipment for stairs Active CN109911537B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910262001.6A CN109911537B (en) 2019-04-02 2019-04-02 Engineering material vertical transportation equipment for stairs

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Application Number Priority Date Filing Date Title
CN201910262001.6A CN109911537B (en) 2019-04-02 2019-04-02 Engineering material vertical transportation equipment for stairs

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CN109911537A true CN109911537A (en) 2019-06-21
CN109911537B CN109911537B (en) 2021-04-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117049088A (en) * 2023-07-12 2023-11-14 广东华隧高科建设有限公司 Equipment transportation device for going upstairs and downstairs

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CN203760066U (en) * 2014-04-15 2014-08-06 洪权煜 Foldable zither support
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CN204198183U (en) * 2014-07-22 2015-03-11 苏州金螳螂建筑装饰股份有限公司 A kind of pay-off for stair passage transporting material
CN204897102U (en) * 2015-07-09 2015-12-23 广州市泰基工程技术有限公司 Electronic cat ladder of instrument formula
CN204980738U (en) * 2015-07-31 2016-01-20 中铁西北科学研究院有限公司 Anticreep rail formula side slope material construction conveyer
CN206088146U (en) * 2016-09-12 2017-04-12 李蕊蕊 Empty haulage equipment that hangs of subway construction level

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US152013A (en) * 1874-06-16 Improvement in elevators
CN203781286U (en) * 2014-03-12 2014-08-20 四川凯达化工有限公司 Carrier for delivery of expanded ammonium nitrate explosive
CN203760066U (en) * 2014-04-15 2014-08-06 洪权煜 Foldable zither support
CN204198183U (en) * 2014-07-22 2015-03-11 苏州金螳螂建筑装饰股份有限公司 A kind of pay-off for stair passage transporting material
CN204897102U (en) * 2015-07-09 2015-12-23 广州市泰基工程技术有限公司 Electronic cat ladder of instrument formula
CN204980738U (en) * 2015-07-31 2016-01-20 中铁西北科学研究院有限公司 Anticreep rail formula side slope material construction conveyer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117049088A (en) * 2023-07-12 2023-11-14 广东华隧高科建设有限公司 Equipment transportation device for going upstairs and downstairs

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