CN204252013U - Across pier self-propelling device - Google Patents

Across pier self-propelling device Download PDF

Info

Publication number
CN204252013U
CN204252013U CN201420639375.8U CN201420639375U CN204252013U CN 204252013 U CN204252013 U CN 204252013U CN 201420639375 U CN201420639375 U CN 201420639375U CN 204252013 U CN204252013 U CN 204252013U
Authority
CN
China
Prior art keywords
walking dolly
suspension bracket
wire rope
semi
vehicle frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420639375.8U
Other languages
Chinese (zh)
Inventor
傅建
王国军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China University of Water Resources and Electric Power
Original Assignee
North China University of Water Resources and Electric Power
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North China University of Water Resources and Electric Power filed Critical North China University of Water Resources and Electric Power
Priority to CN201420639375.8U priority Critical patent/CN204252013U/en
Application granted granted Critical
Publication of CN204252013U publication Critical patent/CN204252013U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to equipment for bridge construction technical field, be specifically related to across pier self-propelling device, comprise from walking dolly, by wire rope by the suspension bracket suspended in midair from walking dolly, describedly be provided with self actuating system from walking dolly, self actuating system comprises the roller be arranged on bottom walking dolly and the drive motors be arranged on from walking car interior, drive motors is connected with roller with transmission mechanism, described suspension bracket at least passes through wire rope suspensioning by two from walking dolly, from walking dolly by vehicle frame, the multiple dismountable semi-girder in vehicle frame top is formed, semi-girder front end leans out to vehicle frame side, mounting part is established in semi-girder front end, mounting part is by wire rope suspensioning suspension bracket, described vehicle frame inside is also provided with hoist engine, hoist engine controls suspension bracket by wire rope and moves up and down, structure is simple, low cost of manufacture, cross over bridge pier or transnational electric pole etc. consuming time short, improve the efficiency of construction, applicability, flexibility is good.

Description

Across pier self-propelling device
Technical field
The utility model relates to equipment for bridge construction technical field, is specifically related to across pier self-propelling device.
Background technology
Suspension bracket equipment be a kind of can the overhead mechanical of vertical lift, staff can be enable to arrive each facade by suspension bracket equipment and carry out construction, be mainly used in steamer, building or structure exterior window and outside Wall Cleaning, the operations such as maintenance, the suspention control sky that suspension bracket equipment comprises suspension bracket and suspension suspension bracket mainly relies on suspension control appliance, along with the raising that construction requires, many suspension control appliances can also carry out walking in a horizontal state by the track preset, realize the movement of suspension bracket level, but, because suspension equipment needs to rely on track to move, and existing suspension control appliance complex structure, cost is high, the application of suspension bracket is made to there is great limitation.In recent years, suspension bracket is widely used in the large-scale building across river and bridge spanning the sea or cleaning, controlling mechanical suspension suspension bracket by loop wheel machine or other suspension makes constructor arrive each facade of bridge, construction operation is carried out to bridge, use suspension bracket to bridge bottom application work time, owing to being provided with the bridge pier of support bottom bridge, bridge is divided into several across section by bridge pier, when completing one and moving across section to the next one across section, suspension bracket generally all will be promoted to bridge floor by existing suspension bracket to carry out with loop wheel machine or hangs being separated and disassembling of machinery, be transferred to the next one and carry out assembling suspention again at the bottom of bridge across section, this process is numerous and diverse, short time consumption is long, and have danger, hinder the progress of engineering greatly, when constructing to bridge side, when loop wheel machine or overhead mechanical are traversing on bridge floor, the lamppost that bridge floor is arranged or electric pole can produce the wire rope that can suspend in midair and hinder, suspension bracket cannot be moved horizontally fast, suspension bracket is needed to sling, on bridge floor, move to realize across electric pole etc. by loop wheel machine or overhead mechanical, loop wheel machine or Suspenoing apparatus bulky, occupy areas a large amount of on bridge floor, cause not convenient greatly, and mobile length consuming time, greatly reduce the efficiency of construction.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned defect, provides across pier self-propelling device, and structure is simple, crosses over bridge pier or transnational electric pole etc. consuming time short, improves the efficiency of construction.
The technical scheme that the utility model solves the employing of its technical problem is as follows:
Across pier self-propelling device, comprise from walking dolly, by wire rope by the suspension bracket suspended in midair from walking dolly, describedly be provided with self actuating system from walking dolly, self actuating system comprises the roller be arranged on bottom walking dolly and the drive motors be arranged on from walking car interior, drive motors is connected with roller with transmission mechanism, it is characterized in that: described suspension bracket at least passes through wire rope suspensioning by two from walking dolly, from walking dolly by vehicle frame, the multiple dismountable semi-girder in vehicle frame top is formed, semi-girder front end leans out to vehicle frame side, mounting part is established in semi-girder front end, mounting part is by wire rope suspensioning suspension bracket, described vehicle frame inside is also provided with hoist engine, hoist engine controls suspension bracket by wire rope and moves up and down, constructed in bridge side, distinguish the two ends of corresponding suspension bracket from walking dolly with two, or multiplely to suspend in midair from walking dolly team suspension bracket, point of suspension is uniformly distributed, make suspension bracket held stationary, suspension bracket is connected to the mounting part from walking dolly semi-girder front end by wire rope, be connected with suspension bracket from the wire rope of walking car interior hoist engine, suspension bracket oscilaltion is controlled by Wound steel rope, semi-girder leans out from walking dolly side, make connecting steel wire ropes can not contact bridge floor edge, do not produce obstruction, to walk along bridge along direction with the drive systems dolly of self from walking dolly and drive suspension bracket to move horizontally to construct, when running into the obstructions such as electric pole, takedown semi-girder successively, once dismantle a semi-girder, enter a bit from walking Plantago minuta after dismounting, this semi-girder correspondence is made to stride across electric pole, again semi-girder is connected with vehicle frame, again semi-girder is made to suspend in midair suspension bracket, dismantle next semi-girder again, by that analogy, until all semi-girders had all dismantled electric pole, thus completing of making suspension bracket disassemble strides across electric pole, each semi-girder being provided with multiple even setting from walking dolly, disassemble semi-girder successively, can not have an impact to the steady of suspension bracket and safety, quick side hundred, and it is simple from the structure of walking dolly, volume is little, move on bridge floor with the drive system of self, it is convenient to control, do not affect other constructions or current of bridge floor, suspension bracket is constructed below bridge floor, when crossing over bridge pier, suspension bracket is hung from walking dolly with four, the two ends difference correspondence two of suspension bracket is from walking dolly, classifying rationally four is from the suspension centre of walking dolly to suspension bracket, make suspension bracket steadily stressed, four corresponding at bridge floor two ends respectively from walking dolly, one end discharge wire rope at a slow speed from the hoist engine of walking dolly, the rope capacity of this end release is not less than the half of suspension bracket length, or release length is not less than the half of the spacing of two ends suspension centre, be discharged into a half, the other end slowly furl wire rope from the hoist engine of walking dolly, suspension bracket is made to hang the homonymy being suspended in bridge gradually, correspondence is discharged wire rope one end from walking dolly, by bridge, descending going on corresponding bridge furls wire rope one end, after on the bridge floor running to this end again, hoist engine carries out retracting wire rope, suspension bracket is made to recover level, then four control suspension bracket from walking dolly and to walk certain distance at bridge homonymy, suspension bracket is made to be between adjacent two bridge piers, then wherein two of one group discharge wire rope from the hoist engine of walking dolly simultaneously, two of another group corresponding retracting wire rope from walking dolly while simultaneously, then by two of release one group of wire rope from walking dolly 1 by the other end running to bridge under bridge, run on the bridge floor of this end end again, after walking, reorganization starts retracting wire rope slowly from the hoist engine of walking dolly, simultaneously, two of the other end start slow release wire rope from the hoist engine of walking dolly, suspension bracket is made again to present level, even if suspension bracket completes walking across pier once, start the construction to next span of bridge, move fast from walking dolly, volume is little, convenient mobile, do not need to disassemble suspension bracket, save man-hour, the efficiency of lifting construction.
Start the construction to next span of bridge, move fast from walking dolly, mustn't disassemble suspension bracket, save man-hour, raising efficiency.
Further, described semi-girder quantity is at least three, be arranged on vehicle frame top uniformly, semi-girder is anterior is provided with reinforcement arm with vehicle frame opposite position, the same suspension centre of at least three semi-girders to suspension bracket suspends in midair, when dismantling semi-girder successively and striding across electric pole, still can realize the steady suspention to suspension bracket, improve safety, with the stationarity hung.
Further, described vehicle frame and hoist engine relative position are provided with wheel frame steel wire rope of windlass being played to guide support, and V-type guide wheel is established on wheel frame top, and wheel frame carries out supporting to the wire rope of hoist engine and leads, steel wire rope of windlass is reeled smooth and easy, the lifting of loop wheel machine is steady.
Preferably, described transmission mechanism is chain gear transmission, comprise the drive sprocket being arranged on drive motors output shaft place, the driven sprocket being arranged on roller place, be connected with chain between drive sprocket with driven sprocket, sprocket drive structure is simple, the synchronism of transmission is strong, is convenient to arrange, reduces the manufacturing cost across pier self-propelling device.
Further, described self actuating system external power supply is powered, and corresponding is provided with protective cover from walking dolly relative position, and protective cover is protected external cable place, prevents wearing and tearing.
The beneficial effects of the utility model are: adopt such scheme, overall structure across pier self-propelling device is simple, walk from row cutting, action is quick, volume is little, be convenient to mobile, and complete and do not need to disassemble suspension bracket across pier process, save a large amount of man-hours, raise the efficiency, when moving across the obstructions such as electric pole at bridge homonymy, completed by takedown semi-girder successively and overall cross electric pole, simple to operate, and this is high across the flexibility of pier self-propelling device, can adjust according to the situation of bridge, applicability is strong, adjustability is good, the cost manufactured is low, can be connected by wire rope or other connecting medias the suspention of suspension bracket from walking dolly semi-girder, the wire rope connected can be the solderless wrapped connection that the wire rope of hoist engine is undertaken successively by pulley assembly, when making hoist engine Wound steel rope, suspension bracket can be elevated, or carry out connection suspention with special wire rope, adjustable controllability is high.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the utility model will become apparent.
Fig. 1 is the schematic diagram when walking dolly is positioned at bridge two ends of the present utility model.
Fig. 2 be of the present utility model from walking dolly bridge two ends retracting or release wire rope time schematic diagram.
Fig. 3 is the schematic diagram when walking dolly is positioned at bridge homonymy of the present utility model.
Wherein: 1 is from walking dolly, 2 is wire rope, and 3 is suspension bracket, and 1.1 is vehicle frame, and 1.2 is semi-girder, and 1.3 is hoist engine, and 1.4 is reinforcement arm, and 4 is bridge pier.
Detailed description of the invention
Embodiment 1: with reference to shown in Fig. 1 across pier self-propelling device, comprise from walking dolly 1, by wire rope 2 by the suspension bracket 3 suspended in midair from walking dolly 1, from walking dolly 1 with self actuating system, self actuating system comprises the roller be arranged on bottom walking dolly 1 and the drive motors (roller be arranged on from walking dolly 1 inside, do not mark in drive motors figure), drive motors is connected with roller with chain-wheel mechanism (not marking in figure), drive motors output shaft place establishes drive sprocket, roller place establishes driven sprocket, be connected with chain between drive sprocket with driven sprocket, sprocket drive structure is simple, the synchronism of transmission is strong, be convenient to arrange, manufacturing cost, from walking dolly 1 by vehicle frame 1.1, three, vehicle frame 1.1 top arranges dismountable semi-girder 1.2 uniformly and forms, the front end of semi-girder 1.3 leans out to the side of vehicle frame 1.1, the mounting part foremost for arranging of semi-girder 1.2, the mount hole that mounting part is provided with mounting or wire rope 2 is passed, wire rope 2 by the mount hole of semi-girder 1.2 through the suspension centre being fixed on suspension bracket 3, realize the suspention to suspension bracket 3, semi-girder 1.2 is anterior is provided with reinforcement arm 1.4 with vehicle frame 1. opposite position, semi-girder 1.2 is strengthened, heavy duty can be born, the inside of vehicle frame 1.1 is also provided with hoist engine 1.3, hoist engine 1.3 connects suspension bracket 3 by wire rope 2 and controls moving up and down of suspension bracket 3, two are suspended in midair from walking dolly 1 pair of suspension bracket two ends, two are suspended in midair the suspension centre at suspension bracket 3 two ends by wire rope 2 respectively from three semi-girders 1.2 that walking dolly 1 is respective, the suspension of corresponding same three semi-girders 1.2 from walking dolly 1 of suspension centre, ensure that the stationarity that suspension bracket 3 suspends in midair and safety, when this is advanced at the homonymy of bridge across pier self-propelling device, run into electric pole, same three semi-girders 1.2 from walking dolly 1 are dismantled successively, once only dismantle a semi-girder 1.2 from walking dolly 1, again be connected with the vehicle frame 1 from walking dolly 1 after this semi-girder 1.2 strides across electric pole, complete and stride across electric pole carrying out dismounting to next semi-girder 1.2, finally make to suspend suspension bracket 3 in midair from walking dolly 1 and stride across electric pole, make this complete across pier self-propelling device and stride across electric pole, stride across the polyvinyl chloride of electric pole, do not need to disassemble suspension bracket, consuming time short, improve the efficiency of construction, and it is simple across pier self-propelling device structure, the cost manufactured is low, safety is high, suspension bracket 3 hangs steadily, suspention wire rope 3 between semi-girder 1.2 and suspension bracket 3 can be special independently wire rope, also can be the wire rope 3 of hoist engine 1.3, once be connected in series by pulley system, hoist engine 1.3 wire rope 2 was both suspended in midair by semi-girder 1.2 pairs of loop wheel machines 3, suspension bracket 3 oscilaltion can be controlled again.
Embodiment 2: with reference to shown in Fig. 1 across pier self-propelling device, comprise from walking dolly 1, by wire rope 2 by the suspension bracket 3 suspended in midair from walking dolly 1, from walking dolly 1 with self actuating system, self actuating system comprises the roller be arranged on bottom walking dolly 1 and the drive motors (roller be arranged on from walking dolly 1 inside, do not mark in drive motors figure), drive motors is connected with roller with chain-wheel mechanism (not marking in figure), drive motors output shaft place establishes drive sprocket, roller place establishes driven sprocket, be connected with chain between drive sprocket with driven sprocket, sprocket drive structure is simple, the synchronism of transmission is strong, be convenient to arrange, manufacturing cost, from walking dolly 1 by vehicle frame 1.1, three, vehicle frame 1.1 top arranges dismountable semi-girder 1.2 uniformly and forms, the front end of semi-girder 1.3 leans out to the side of vehicle frame 1.1, the mounting part foremost for arranging of semi-girder 1.2, the mount hole that mounting part is provided with mounting or wire rope 2 is passed, wire rope 2 by the mount hole of semi-girder 1.2 through the suspension centre being fixed on suspension bracket 3, realize the suspention to suspension bracket 3, semi-girder 1.2 is anterior is provided with reinforcement arm 1.4 with vehicle frame 1. opposite position, semi-girder 1.2 is strengthened, heavy duty can be born, the inside of vehicle frame 1.1 is also provided with hoist engine 1.3, hoist engine 1.3 connects suspension bracket 3 by wire rope 2 and controls moving up and down of suspension bracket 3, suspention wire rope 3 between semi-girder 1.2 and suspension bracket 3 can be special independently wire rope, also can be the wire rope 3 of hoist engine 1.3, once be connected in series by pulley system, hoist engine 1.3 wire rope 2 was both suspended in midair by semi-girder 1.2 pairs of loop wheel machines 3, suspension bracket 3 oscilaltion can be controlled again, four are suspended in midair the two ends of reply suspension bracket 3 respectively from walking dolly 1 point two groups, and according to length classifying rationally two groups of suspension centres from walking dolly 1 pair of suspension bracket 3 of suspension bracket, make suspension bracket 3 steadily stressed, two groups from walking dolly 1 corresponding bridge floor two ends near bridge pier 4 respectively, two hoist engines 1.3 from walking dolly 1 of bridge floor one end discharge wire rope 2 at a slow speed, the length of the wire rope 2 of this end release must be not less than the half of suspension bracket 3 length, or the length of release is not less than the half of the spacing of the two ends suspension centre of suspension bracket 3, with reference to shown in Fig. 2, when the hoist engine 1.3 of this end discharges the half that wire rope 2 reaches the half of suspension bracket 3 length or the spacing of two ends suspension centre, the bridge floor other end slowly furl wire rope 2 from the hoist engine 1.3 of walking dolly 1, suspension bracket 3 is made to hang the homonymy being suspended in bridge gradually, this process strictly will control the release of hoist engine 1.3 or the speed of retracting wire rope 2, to realize suspension bracket 3, wire rope 2, from the reasonable stress of walking dolly 1, avoid causing danger, realize the safety of whole process, the retracting wire rope 2 continuing slowly from the hoist engine 1.3 of walking dolly 1 of Wound steel rope 2 one end, simultaneously, the bridge floor other end gone to by bridge is descending one end bridge furling wire rope 2 from walking dolly 1, run to again on the bridge floor of this end, two groups are made to be on the bridge floor of same one end from walking dolly 1, with reference to shown in Fig. 3, two groups to be advanced suitable distance along construction direction on bridge floor from walking dolly 1, control suspension bracket 3 simultaneously and move horizontally certain distance, this segment distance will ensure from the appropriate distance of walking dolly 1 next section of work, can be between adjacent two bridge piers 4 to realize suspension bracket 3, control suspension bracket 3 from walking dolly 1 to walk at bridge homonymy, after suspension bracket 3 all strides across bridge pier 4, wherein two hoist engines 1.3 from walking dolly 1 of a group discharge wire rope 2 simultaneously, release length is not less than the half of the half of suspension bracket 3 length or the spacing of suspension centre, two of another group corresponding retracting wire rope 2 from walking dolly 1 while simultaneously, retracting length is not more than the half of suspension bracket length or is not more than the half of suspension centre spacing length, then by two of release one group of wire rope 2 from walking dolly 1 by the other end running to bridge under bridge, run to again on the bridge floor of the other end, after walking, reorganization starts retracting wire rope 2 slowly from the hoist engine 1.3 of walking dolly 1, simultaneously, two of the other end start slow release wire rope from the hoist engine 1.3 of walking dolly 1, release length is not more than the half of the length of suspension bracket 3 or is not more than the half of suspension centre spacing, suspension bracket 3 is made to be referring now to the state shown in Fig. 2 gradually, make suspension bracket 3 complete once across pier, two ends make suspension bracket 3 finally be in reference to state as shown in Figure 1 from the release of hoist engine 1.3 correspondence of walking dolly 1 or retracting wire rope 2, start the construction to next span of bridge, move fast from walking dolly, volume is little, convenient mobile, do not need to disassemble suspension bracket, save man-hour, the efficiency of lifting construction.
Hoist engine is by the upper-lower position of rolling wire rope adjustment suspension bracket, can be connected by pulley gear with the wire rope of hoist engine between semi-girder with suspension bracket, make across the suspension centre of pier self-propelling device to suspension bracket uniform, strengthen safety and the stationarity of suspention, or lift separately with wire rope, be independent of each other, simplify structure, can hang across pier self-propelling device with single or multiple the suspention of suspension bracket, multiple, safety more steady to the suspension of suspension bracket across pier self-propelling device, can carry heavier weight.
The above; it is only preferred embodiment of the present utility model; not any pro forma restriction is done to the utility model, every according in technical spirit of the present utility model to any simple modification, equivalent variations that above embodiment is done, all fall within protection domain of the present utility model.

Claims (5)

1. across pier self-propelling device, comprise from walking dolly, by wire rope by the suspension bracket suspended in midair from walking dolly, describedly be provided with self actuating system from walking dolly, self actuating system comprises the roller be arranged on bottom walking dolly and the drive motors be arranged on from walking car interior, drive motors is connected with roller with transmission mechanism, it is characterized in that: described suspension bracket at least passes through wire rope suspensioning by two from walking dolly, from walking dolly by vehicle frame, the multiple dismountable semi-girder in vehicle frame top is formed, semi-girder front end leans out to vehicle frame side, mounting part is established in semi-girder front end, mounting part is by wire rope suspensioning suspension bracket, described vehicle frame inside is also provided with hoist engine, hoist engine controls suspension bracket by wire rope and moves up and down.
2. according to claim 1 across pier self-propelling device, it is characterized in that: described semi-girder quantity is at least three, is arranged on vehicle frame top uniformly, semi-girder is anterior is provided with reinforcement arm with vehicle frame opposite position.
3. according to claim 1 across pier self-propelling device, it is characterized in that: described vehicle frame and hoist engine relative position are provided with wheel frame steel wire rope of windlass being played to guide support, and V-type guide wheel is established on wheel frame top.
4. according to claim 1 across pier self-propelling device, it is characterized in that: described transmission mechanism is chain gear transmission, comprise the drive sprocket being arranged on drive motors output shaft place, the driven sprocket being arranged on roller place, be connected with chain between drive sprocket with driven sprocket.
5. according to claim 1 across pier self-propelling device, it is characterized in that: described self actuating system external power supply is powered, corresponding is provided with protective cover from walking dolly relative position.
CN201420639375.8U 2014-10-31 2014-10-31 Across pier self-propelling device Expired - Fee Related CN204252013U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420639375.8U CN204252013U (en) 2014-10-31 2014-10-31 Across pier self-propelling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420639375.8U CN204252013U (en) 2014-10-31 2014-10-31 Across pier self-propelling device

Publications (1)

Publication Number Publication Date
CN204252013U true CN204252013U (en) 2015-04-08

Family

ID=52956338

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420639375.8U Expired - Fee Related CN204252013U (en) 2014-10-31 2014-10-31 Across pier self-propelling device

Country Status (1)

Country Link
CN (1) CN204252013U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831623A (en) * 2015-04-15 2015-08-12 华北水利水电大学 Self-running apparatus of pier-crossing suspension bracket
CN112144396A (en) * 2020-10-12 2020-12-29 河南六建重工有限公司 Steel structure for bridge construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831623A (en) * 2015-04-15 2015-08-12 华北水利水电大学 Self-running apparatus of pier-crossing suspension bracket
CN112144396A (en) * 2020-10-12 2020-12-29 河南六建重工有限公司 Steel structure for bridge construction

Similar Documents

Publication Publication Date Title
CN102397039B (en) Folding window cleaning equipment
CN104831623B (en) A kind of across pier suspension bracket self-propelling device
CN109797833A (en) A kind of town road drain pipe construction equipment and method
CN102776834A (en) Work car for main cables of suspension bridge
CN204252013U (en) Across pier self-propelling device
CN202313138U (en) Folding window cleaning equipment
CN210366784U (en) Civil engineering is with dismantled and assembled small-size machinery hoisting accessory
CN207469715U (en) A kind of scaffold for building for being readily transported construction material
CN213063536U (en) Intelligent ultra-long stroke hoisting oil pumping unit
CN101949169B (en) Large pipeline sludge dredging machine
CN205802845U (en) A kind of civil engineering is with hanging a liter machine
CN204608600U (en) A kind of across pier suspension bracket self-propelling device
CN201771472U (en) Hydraulic pumping unit
CN208054764U (en) Construction material is vertical and horizontal transporter
CN103482495B (en) Sliding device and counterweight hitching device
CN105200918A (en) Bridge detection structure and bridge detection method adopting same
CN101942804A (en) Bridge surface construction vehicle for high-speed railway
CN204898521U (en) Bridge detects structure
CN205348734U (en) A jenny scaffold for construction of horizontal bracket vacant duct
CN201606041U (en) Twin-well oil pumping unit
CN209273680U (en) A kind of box beam rubber tube aid-pulling device
CN202866354U (en) Auxiliary balance lifting device
CN201648524U (en) Steel strand wire rod pickling line bridge self-propelled trolley device
CN207812982U (en) A kind of inner wall of oil tank construction hanging basket
CN219929462U (en) Device for hoisting small-sized bridge precast slab

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: 20150408

Termination date: 20151031

EXPY Termination of patent right or utility model