CN113526372B - Double pier body construction tower crane and viaduct construction method - Google Patents

Double pier body construction tower crane and viaduct construction method Download PDF

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Publication number
CN113526372B
CN113526372B CN202110654721.4A CN202110654721A CN113526372B CN 113526372 B CN113526372 B CN 113526372B CN 202110654721 A CN202110654721 A CN 202110654721A CN 113526372 B CN113526372 B CN 113526372B
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China
Prior art keywords
tower crane
station
oil cylinder
pier
block
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CN202110654721.4A
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Chinese (zh)
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CN113526372A (en
Inventor
金鹤翔
张刊
叶进其
李维波
周立宏
徐立新
王汉炜
殷明
尹志豪
刘闯
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Zhejiang Construction Engineering Machinery Group Co Ltd
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Zhejiang Construction Engineering Machinery Group Co Ltd
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Priority to CN202110654721.4A priority Critical patent/CN113526372B/en
Publication of CN113526372A publication Critical patent/CN113526372A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/26Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • B66C23/72Counterweights or supports for balancing lifting couples
    • B66C23/78Supports, e.g. outriggers, for mobile cranes
    • B66C23/80Supports, e.g. outriggers, for mobile cranes hydraulically actuated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C7/00Runways, tracks or trackways for trolleys or cranes
    • B66C7/08Constructional features of runway rails or rail mountings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/08Runners; Runner bearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/10Undercarriages or bogies, e.g. end carriages, end bogies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/16Travelling gear incorporated in or fitted to trolleys or cranes with means for maintaining alignment between wheels and track
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a double pier body construction tower crane and a viaduct construction method, which comprise two pier bodies and a tower crane body, wherein the two pier bodies and the tower crane body are oppositely arranged, the tower crane body is connected with a main support connection embedded block and an auxiliary support connection embedded block through a main support connection block and an auxiliary support connection embedded block through connecting rods, an oil cylinder connection embedded block on a pier body of a next station is connected with an oil cylinder connection plate of the tower crane body through a telescopic oil cylinder, a track frame is connected between the track connection embedded blocks, a track is paved on the track frame, the track extends to the track frame on the next station, a cushion block is arranged at the bottom of the track between the two pier bodies, and pulleys matched with the track are arranged at the bottom of the tower crane body. According to the invention, the track is paved between the adjacent stations, so that the tower crane is only required to be installed once, and the lifting procedures of the bearing platforms and the bridge decks of all pier bodies can be realized.

Description

Double pier body construction tower crane and viaduct construction method
Technical Field
The invention relates to the field of construction machinery, in particular to a double pier body construction tower crane and a viaduct construction method.
Background
When the existing viaduct is constructed, each tower crane operation radius is required to be provided with one tower crane, or the working within the same tower crane operation radius is completed and then moved to the next operation area, the underground pre-buried foundation is required to be re-made, meanwhile, the tower cranes are required to be disassembled and assembled, and the expenditure of manpower and materials is huge.
Disclosure of Invention
In order to solve the technical problems, the invention provides the double pier body construction tower crane, and the track is paved between adjacent stations, so that the tower crane can realize the lifting procedures of the bearing platforms and the bridge decks of all pier bodies only by being installed once.
The invention adopts the following technical scheme:
the utility model provides a two pier shaft construction tower cranes, includes two pier shafts that set up relatively and the tower crane body that is located between the pier shafts, be equipped with main tributary support connection pre-buried piece on the pier shaft, assist support connection pre-buried piece, hydro-cylinder connection pre-buried piece, guide rail connection pre-buried piece, tower crane body side is equipped with main tributary support connecting block, assist support connecting block, main tributary support connecting block, assist support connecting block and connect the pre-buried piece through the connecting rod, the hydro-cylinder connection pre-buried piece on the pier shaft of next station passes through the hydro-cylinder connecting plate that flexible hydro-cylinder connected tower crane body, be connected with the track frame between the pre-buried piece of the guide rail connection that sets up relatively, the track has been laid on the track frame, the track extends to the track frame on the next station, the track bottom between two pier shafts is equipped with the cushion, tower crane body bottom is equipped with the pulley with track complex.
The hydraulic oil tank is connected with the other end of the telescopic oil cylinder through a left pushing oil way of the cylinder body, the reversing valve is connected to the right pushing oil way of the cylinder body and the left pushing oil way of the cylinder body, and the operating handle is connected with the reversing valve and the motor.
Preferably, an overflow valve is arranged between the cylinder right pushing oil way and the hydraulic oil tank.
Preferably, the tower crane body is provided with a mounting bracket, the oil cylinder connecting plate is embedded into the mounting bracket, and the telescopic oil cylinders on the two pier bodies are connected to two ends of the oil cylinder connecting plate.
Preferably, the pulley is inwards sunken to form a limit groove, two ends of the limit groove are anti-drop blocks, and the track is embedded in the limit groove.
Preferably, a detachable hydraulic support rod is arranged at the lower end of the tower crane body.
Preferably, both ends of the rail exceed the length of one half station of the rail frame.
Preferably, the rail frame and the rail are joggled.
The viaduct construction method comprises the following steps of:
s1: the oil cylinder of the third station is connected with the embedded block to install the telescopic oil cylinder, and the telescopic oil cylinder is connected with the oil cylinder connecting plate of the tower crane body;
s2: the tower crane body slides from the first station to the second station on the track through the pulley by controlling the operating handle;
s3: a main support connecting block and an auxiliary support connecting block are arranged between the tower crane body and the pier body, and the telescopic oil cylinder and the oil cylinder connecting plate are removed;
s4: and operating the tower crane body to carry out a lifting procedure of the bearing platform of the first station and the bridge deck.
Preferably, the method further comprises the following steps:
s5: the rail frame is connected to the guide rail connecting embedded blocks of the third station and the fourth station, the rail is hoisted by the tower crane body and laid on the rail frames of the third station and the fourth station, and the two ends of the rail exceed the length of one half station of the rail frame, so that the rails between the second station and the third station are tightly connected;
s6: paving a cushion block below the track between the second station and the third station;
s7: dismantling a main support connecting block and an auxiliary support connecting block which are connected with the pier body of the tower crane body, installing a telescopic oil cylinder at an oil cylinder connection embedded block of a fourth station, and connecting the telescopic oil cylinder on an oil cylinder connecting plate;
s8: the tower crane body slides from the second station to the third station on the track through the pulley by controlling the operating handle;
s9: a main support connecting block and an auxiliary support connecting block are arranged between the tower crane body and the pier body, and the telescopic oil cylinder and the oil cylinder connecting plate are removed;
s10: and operating the tower crane body to carry out a lifting procedure of the bearing platform and the bridge deck of the second station.
Compared with the prior art, the invention has the following advantages:
1. by paving the tracks between adjacent stations, the tower crane only needs to be installed once, and the lifting procedures of the bearing platforms and the bridge decks of all pier bodies can be realized.
2. The cushion blocks are arranged below the rails, so that the stability of the rails can be enhanced, and the rails are prevented from deforming due to the fact that the rails cannot bear the tower crane body.
3. The oil cylinder connecting plate is embedded into the mounting bracket, so that the oil cylinder connecting plate is convenient to mount and dismount.
4. The track is embedded in the limit groove, so that the pulley can be prevented from derailing when sliding.
5. The two ends of the rail exceed the length of one half station of the rail frame, and two adjacent rails are spliced to ensure that the distance between each station is equal, and the construction precision is ensured.
6. The track frame and the track are joggled, so that the track frame and the track are convenient to detach and install, and materials can be reused.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a schematic structural diagram of a tower crane body.
Fig. 4 is a schematic structural view of the pier body.
Fig. 5 is a schematic structural view of the pulley.
Fig. 6 is a schematic diagram of the first four stations of the present invention.
Fig. 7 is a schematic diagram of a second and third station configuration of the present invention.
Fig. 8 is a schematic structural view of the cylinder assembly.
In the figure, a pier body 1, a main support connection embedded block 11, an auxiliary support connection embedded block 12, an oil cylinder connection embedded block 13, a guide rail connection embedded block 14, a track frame 15, a tower crane body 2, a main support connection block 21, an auxiliary support connection block 22, an oil cylinder connection plate 23, a pulley 24, a limit groove 241, an anti-drop block 242, a mounting bracket 25, a connecting rod 3, an oil cylinder assembly 4, a hydraulic oil tank 41, a motor 42, an oil pump 43, an overflow valve 44, a reversing valve 45, a telescopic oil cylinder 46, an operating handle 47, a cylinder right pushing oil way 48, a cylinder left pushing oil way 49, a track 5 and a cushion block 6.
Detailed Description
In order to facilitate understanding of the technical scheme of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-8, a double pier body construction tower crane comprises two pier bodies 1 and a tower crane body 2, wherein the two pier bodies 1 are oppositely arranged, the tower crane body 2 is positioned between the pier bodies, a main supporting connection embedded block 11, an auxiliary supporting connection embedded block 12, an oil cylinder connection embedded block 13 and a guide rail connection embedded block 14 are arranged on the pier bodies 1, a main supporting connection block 21, an auxiliary supporting connection block 22 and an oil cylinder connection block 23 are arranged on the side face of the tower crane body 2, the main supporting connection block 21 and the auxiliary supporting connection block 22 are connected with the main supporting connection embedded block 11 and the auxiliary supporting connection embedded block 12 through a connecting rod 3, the oil cylinder connection embedded block 13 on the pier body 1 of the next station is connected with the oil cylinder connection plate 23 of the tower crane body 2 through a telescopic oil cylinder 46, a track frame 15 is connected between the oppositely arranged guide rail connection embedded blocks 14, a track 5 is paved on the track frame 15, a track 5 extends to the track frame 15 on the next station, a pulley 24 matched with the track 5 is arranged at the bottom of the tower crane body 2.
Specifically, two main support connection embedded blocks 11 and auxiliary support connection embedded blocks 12 are arranged on each pier body 1, correspondingly, four main support connection blocks 21 and auxiliary support connection blocks 22 are arranged on the tower crane body 2, and the tower crane body 2 is connected with two pier bodies 1 on the same station through the connecting rods 3 and used for fixing the tower crane body 2.
Two guide rail connecting embedded blocks 14 are arranged on each pier body 1, a track frame 15 is connected between the guide rail connecting embedded blocks 14, and the pier bodies can be fixed through threaded connection; or the embedded block 14 is provided with a connecting groove, and the track frame 15 is embedded in the connecting groove. In practice, the guide rail can be connected to the pre-buried block 14 and the track frame 15 and then be of a detachable structure.
A rail 5 is laid on the rail frame 15 for sliding of the tower crane body 2. The track frame 15 and the track 5 are joggled, so that the track 5 and the track frame 15 are relatively fixed, and meanwhile, the tower crane body 2 is detached after moving.
The hydraulic oil cylinder assembly 4 comprises a hydraulic oil tank 41, a motor 42, an oil pump 43, a reversing valve 45, a telescopic oil cylinder 46 and an operating handle 47, wherein the oil pump 43 is connected with the hydraulic oil tank 41 and the motor 42, one end of the telescopic oil cylinder 46 is connected with the hydraulic oil tank 41 through a cylinder right pushing oil way 48, the hydraulic oil tank 41 is connected with the other end of the telescopic oil cylinder 46 through a cylinder left pushing oil way 49, the reversing valve 45 is connected to the cylinder right pushing oil way 48 and the cylinder left pushing oil way 49, and the operating handle 47 is connected with the reversing valve 45 and the motor 42. An overflow valve 44 is provided between the cylinder right push oil passage 48 and the hydraulic oil tank 41. When the oil pump is used, the opening of the operating handle 47 determines the speed of the motor 42, the motor 42 rotates to drive the oil pump 43 to pump oil from the hydraulic oil tank 41, and oil is injected into the telescopic oil cylinder 46 through the right push oil way 48 of the cylinder body so that one end of the telescopic oil cylinder 46 is pushed forward; the direction of change of the operating handle 47 controls the reversing valve 45 to act, and the oil path becomes to inject oil from the cylinder body left pushing oil path 49 to the telescopic oil cylinder 46 so that one end of the telescopic oil cylinder 46 is pushed backwards.
The tower crane body 2 is provided with a mounting bracket 25, the oil cylinder connecting plate 23 is embedded into the mounting bracket 25, and the telescopic oil cylinders 46 on the two pier bodies 1 are connected to two ends of the oil cylinder connecting plate 23. The mounting brackets 25 are two L-shaped brackets welded at the front part of the tower crane body 2, and the telescopic oil cylinders 46 are connected to the two ends of the oil cylinder connecting plate 23, so that the tower crane body 2 is uniformly stressed when being pulled to slide. Meanwhile, the sliding device is convenient to detach after sliding is finished.
The pulley 24 is recessed inwards to form a limiting groove 241, the two ends of the limiting groove 241 are provided with anti-derailing blocks 242, and the track 5 is embedded in the limiting groove 241, so that the pulley can be prevented from derailing during sliding.
The detachable hydraulic support rod is arranged at the lower end of the tower crane body 2, the hydraulic support rod is installed when the tower crane body 2 slides out of the previous station, and the hydraulic support rod is detached before the tower crane body reaches the next station, so that the track bending caused by overlarge pressure in the movement process can be prevented.
The two ends of the rail 5 exceed the length of one half station of the rail frame 15, specifically, one rail 5 is laid on two stations, and the two ends of the rail 5 exceed the length of one half station of the rail frame 15, namely, one section of rail 5 is three times the length of the station (one station is the distance between two adjacent pier bodies). When two adjacent rails 5 are spliced, a rail connecting plate can be arranged below the spliced position and connected through bolts.
The viaduct construction method comprises the following steps of:
s1: as shown in fig. 6 (for convenience of illustration, the telescopic cylinder 46 on one side is omitted), the telescopic cylinder 46 is installed on the cylinder connecting pre-buried block 13 of the third station, and at the same time, the telescopic cylinder 46 is connected to the cylinder connecting plate 23 of the tower crane body 2, and at this time, the tower crane body 2 is located on the first station;
s2: a cushion block 6 is arranged below the rail 5 between the first station and the second station, and the tower crane body 2 slides on the rail 5 from the first station to the second station through a pulley 24 by controlling an operation handle 47;
s3: a main support connecting block 21 and an auxiliary support connecting block 22 are arranged between the tower crane body 2 and the pier body 1, and the telescopic oil cylinder 46 and the oil cylinder connecting plate 23 are removed;
s4: and operating the tower crane body 2 to carry out a lifting procedure of the bearing platform and the bridge deck of the first station.
S5: the rail frame 15 is connected to the guide rail connecting embedded blocks 14 of the third station and the fourth station, the rail 5 is hoisted by the tower crane body 2 and laid on the rail frame 15 of the third station and the fourth station, and the two ends of the rail 5 exceed the length of one half station of the rail frame 15, so that the rail 5 between the second station and the third station is tightly connected;
s6: paving a cushion block 6 below the rail 5 between the second station and the third station;
s7: dismantling a main support connecting block 21 and an auxiliary support connecting block 22 which are connected with the pier body 1 of the tower crane body 2, installing a telescopic oil cylinder 46 on an oil cylinder connection embedded block 13 of a fourth station, and connecting the telescopic oil cylinder 46 on an oil cylinder connecting plate 23;
s8: the tower crane body 2 slides from the second station to the third station on the track 5 through the pulley 24 by controlling the operating handle 47;
s9: a main support connecting block 21 and an auxiliary support connecting block 22 are arranged between the tower crane body 2 and the pier body 1, and the telescopic oil cylinder 46 and the oil cylinder connecting plate 23 are removed;
s10: and operating the tower crane body 2 to carry out a lifting procedure of the bearing platform and the bridge deck of the second station.
And similarly, when the tower crane body 2 slides to the penultimate station, the lifting procedures of the bearing platform and the bridge deck of the penultimate station, the current station and the last station are completed.
The foregoing is merely a preferred embodiment of the present invention, and the scope of the invention is defined by the claims, and those skilled in the art should also consider the scope of the present invention without departing from the spirit and scope of the invention.

Claims (7)

1. The utility model provides a two pier shaft construction tower cranes, its characterized in that, including two pier shafts (1) that set up relatively and be located the tower crane body (2) between the pier shafts, be equipped with main tributary support connection pre-buried block (11) on pier shaft (1), assist support connection pre-buried block (12), hydro-cylinder connection pre-buried block (13), guide rail connection pre-buried block (14), tower crane body (2) side is equipped with main tributary support connecting block (21), assist support connecting block (22), hydro-cylinder connecting plate (23), main tributary support connecting block (21), assist support connecting block (22) connect main tributary support connection pre-buried block (11) through connecting rod (3), assist support connection pre-buried block (12), hydro-cylinder connection pre-buried block (13) on pier shaft (1) of next station connect pre-buried block (2) through telescopic cylinder (46), be connected with track frame (15) between the guide rail connection pre-buried block (14) of relative setting, track frame (5) are laid on track frame (15), be equipped with track (24) between two pier shafts (1) bottom (5) and bottom pulley (2) are equipped with; the tower crane body (2) is provided with a mounting bracket (25), an oil cylinder connecting plate (23) is embedded into the mounting bracket (25), telescopic oil cylinders (46) on the two pier bodies (1) are connected to two ends of the oil cylinder connecting plate (23), the mounting bracket (25) is two L-shaped brackets welded to the front part of the tower crane body (2), and the telescopic oil cylinders (46) are connected to two ends of the oil cylinder connecting plate (23), so that the tower crane body (2) is uniformly stressed when in tension sliding;
the method comprises the following steps:
s1: the oil cylinder connection embedded block (13) of the third station is provided with a telescopic oil cylinder (46), and the telescopic oil cylinder (46) is connected to the oil cylinder connection plate (23) of the tower crane body (2);
s2: the tower crane body (2) slides on the rail (5) from the first station to the second station through the pulley (24) by controlling the operating handle (47);
s3: a main support connecting block (21) and an auxiliary support connecting block (22) are arranged between the tower crane body (2) and the pier body (1), and the telescopic oil cylinder (46) and the oil cylinder connecting plate (23) are removed;
s4: operating the tower crane body (2) to carry out a lifting procedure of a bearing platform and a bridge deck of the first station;
s5: the rail frame (15) is connected to the guide rail connecting embedded blocks (14) of the third station and the fourth station, the rail (5) is hoisted through the tower crane body (2) and paved on the rail frames (15) of the third station and the fourth station, and the two ends of the rail (5) exceed the length of one half station of the rail frame (15), so that the rails (5) between the second station and the third station are tightly connected;
s6: paving a cushion block (6) below the track (5) between the second station and the third station;
s7: dismantling a main support connecting block (21) and an auxiliary support connecting block (22) which are connected with the pier body (1) of the tower crane body (2), installing a telescopic oil cylinder (46) on an oil cylinder connection embedded block (13) of a fourth station, and connecting the telescopic oil cylinder (46) on an oil cylinder connecting plate (23);
s8: the tower crane body (2) slides on the rail (5) from the second station to the third station through the pulley (24) by controlling the operating handle (47);
s9: a main support connecting block (21) and an auxiliary support connecting block (22) are arranged between the tower crane body (2) and the pier body (1), and the telescopic oil cylinder (46) and the oil cylinder connecting plate (23) are removed;
s10: and (3) operating the tower crane body (2) to carry out a lifting procedure of a bearing platform and a bridge deck of the second station.
2. The double pier body construction tower crane according to claim 1, further comprising an oil cylinder assembly (4), wherein the oil cylinder assembly (4) comprises a hydraulic oil tank (41), a motor (42), an oil pump (43), a reversing valve (45), a telescopic oil cylinder (46) and an operating handle (47), the oil pump (43) is connected with the hydraulic oil tank (41) and the motor (42) and is connected with one end of the telescopic oil cylinder (46) through a cylinder right pushing oil way (48), the hydraulic oil tank (41) is connected with the other end of the telescopic oil cylinder (46) through a cylinder left pushing oil way (49), the reversing valve (45) is connected to the cylinder right pushing oil way (48) and the cylinder left pushing oil way (49), and the operating handle (47) is connected with the reversing valve (45) and the motor (42).
3. The double pier construction tower crane according to claim 2, wherein an overflow valve (44) is provided between the cylinder right push oil path (48) and the hydraulic oil tank (41).
4. The double pier construction tower crane according to claim 1, wherein the pulley (24) is recessed inwards to form a limiting groove (241), two ends of the limiting groove (241) are anti-drop blocks (242), and the track (5) is embedded in the limiting groove (241).
5. The double pier construction tower crane according to claim 1, wherein the lower end of the tower crane body (2) is provided with a detachable hydraulic support rod.
6. The double pier construction tower crane according to claim 1, wherein both ends of the rail (5) exceed the length of a half station of the rail frame (15).
7. The double pier construction tower crane according to claim 1, wherein the track frame (15) and the track (5) are joggled.
CN202110654721.4A 2021-06-11 2021-06-11 Double pier body construction tower crane and viaduct construction method Active CN113526372B (en)

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CN114164767A (en) * 2021-12-27 2022-03-11 上海市机械施工集团有限公司 Installation method of steel box girder bridge

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