CN111170165A - A portal crane for bridge construction has a function of preventing wind - Google Patents

A portal crane for bridge construction has a function of preventing wind Download PDF

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Publication number
CN111170165A
CN111170165A CN202010092378.4A CN202010092378A CN111170165A CN 111170165 A CN111170165 A CN 111170165A CN 202010092378 A CN202010092378 A CN 202010092378A CN 111170165 A CN111170165 A CN 111170165A
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CN
China
Prior art keywords
motor
bridge construction
windproof
translation
gantry crane
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.)
Withdrawn
Application number
CN202010092378.4A
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Chinese (zh)
Inventor
曹燕红
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.)
Guangzhou Jinghai Technology Co ltd
Original Assignee
Guangzhou Jinghai Technology Co ltd
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 Guangzhou Jinghai Technology Co ltd filed Critical Guangzhou Jinghai Technology Co ltd
Priority to CN202010092378.4A priority Critical patent/CN111170165A/en
Publication of CN111170165A publication Critical patent/CN111170165A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/22Control systems or devices for electric drives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/48Automatic control of crane drives for producing a single or repeated working cycle; Programme control
    • 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
    • B66C9/14Trolley or crane travel drives
    • 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

Abstract

The invention relates to a gantry crane with a windproof function for bridge construction, which comprises a top plate, a processor, a translation block, a translation mechanism, a windproof mechanism, a transportation mechanism and two support plates, wherein the transportation mechanism comprises a first motor, a sleeve, a rotating shaft, a wire coil, a steel wire rope, a lifting hook and a braking assembly, the braking assembly comprises an electromagnet, a spring, an iron rod and two sliding units, the windproof mechanism comprises two driving assemblies and two windproof plates, the driving assemblies comprise a vertical plate, a lifting unit, a lifting block and two support rods, the gantry crane with the windproof function for bridge construction can automatically clamp the convex rod after power failure when the transportation mechanism is used for realizing goods transportation, so that the wire coil cannot rotate, the goods are prevented from falling and being damaged and causing safety accidents, and moreover, the windproof mechanism is used for enabling the goods to be positioned in a tubular protection space during transportation, avoid blowing and rock, influence the stability of transportation, prevent wind through protecting, improved the practicality of equipment.

Description

A portal crane for bridge construction has a function of preventing wind
Technical Field
The invention relates to the field of bridge construction, in particular to a gantry crane with a windproof function for bridge construction.
Background
The gantry crane is a deformation of a bridge crane, is called a gantry crane for short, is mainly used for loading and unloading outdoor goods yard, stock yard goods and bulk goods, has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, and is widely applied to port goods yards and bridge construction sites.
Current portal crane is carrying out transportation during operation, mainly rely on the lifting hook to catch on the goods, then tighten up or relax the rope by the hoist and drive lifting hook and goods and go up and down, and horizontal position through the adjustment hoist engine, the transportation position of adjustment goods, in the transportation, because equipment is in outdoor operation, receive the external environment influence, when wind-force is stronger, blow the goods on the lifting hook easily, make the goods take place to rock, the stability of transportation has been influenced, moreover, because equipment relies on electric power operation, break down when the power supply network, when equipment is in the outage state, the goods on lifting hook and the lifting hook can fall downwards because of the action of gravity this moment, not only cause the goods to damage, still can cause the incident, lead to current portal crane practicality to reduce.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the gantry crane with the wind-proof function for bridge construction is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a gantry crane with a windproof function for bridge construction comprises a top plate, a processor, a translation block, a translation mechanism, a windproof mechanism, a conveying mechanism and two support plates, wherein the bottom ends of the support plates are provided with the translation mechanism;
the transportation mechanism comprises a first motor, a sleeve, a rotating shaft, a wire coil, a steel wire rope, a lifting hook and a braking assembly, wherein the first motor and the sleeve are fixed below a translation block, the first motor is in transmission connection with one end of the rotating shaft, the other end of the rotating shaft is arranged in the sleeve, the wire coil is coaxially fixed on the rotating shaft and is connected with the lifting hook through the steel wire rope, a plurality of convex rods are arranged at the two ends of the wire coil, the convex rods are circumferentially and uniformly distributed at the periphery of the rotating shaft, the length of each convex rod is greater than half of the outer diameter of the wire coil, a notch is arranged below the translation block, the braking assembly is arranged in the notch, the braking assembly comprises an electromagnet, a spring, an iron rod and two sliding units, the electromagnet is fixed at the bottom in the notch, the two ends of the spring are respectively connected with the centers of the electromagnet and the iron rod, and the, the first motor and the electromagnet are electrically connected with the PLC;
prevent wind the mechanism and include two drive assembly and two windbreak boards, the shape of the horizontal cross section of windbreak board is half-circular arc, drive assembly is located between two windbreak boards, drive assembly includes riser, lift unit, elevator and two branches, the below at the translation piece is fixed to the riser, the lift unit sets up on the riser, the lift unit is connected with the elevator transmission, the both sides of elevator are articulated with the windbreak board through two branches respectively, the top of windbreak board is articulated with the translation piece.
Preferably, in order to drive the translation block to move, the translation mechanism comprises a conveyor belt, the conveyor belt is arranged below the top plate and is electrically connected with the PLC, and the translation block is fixed below the conveyor belt.
Preferably, in order to support the translation block, the moving mechanism further comprises two transverse shafts, two ends of each transverse shaft are respectively and fixedly connected with the two support plates, and the translation block is sleeved on the transverse shafts.
Preferably, in order to facilitate the movement of the vertical plate, universal wheels are arranged at the bottom end of the vertical plate.
Preferably, for the lift removal of drive elevator, the lift unit includes second motor, lead screw and bearing, second motor and bearing are all fixed on the riser, the second motor is connected with the one end transmission of lead screw, the other end setting of lead screw is in the bearing, the elevator cover is established on the lead screw, the elevator with the junction of lead screw be equipped with the screw thread that matches with the lead screw.
Preferably, in order to avoid corrosion of the screw rod, the screw rod is coated with an anti-corrosion zinc coating.
Preferably, in order to realize the stable lifting movement of iron set, the slip unit includes montant, slide and connecting rod, the slide passes through the connecting rod to be fixed in the top of iron set, the montant is fixed in the intraoral bottom of recess, the slide cover is established on the montant.
Preferably, in order to prevent the slide plate from separating from the vertical rod, the bottom end of the vertical rod is provided with a lug.
Preferably, in order to drive the support plate to move, the moving mechanism comprises a third motor, a limiting assembly and two rollers, the third motor is fixed at the bottom end of the support plate and electrically connected with the PLC, the two rollers are respectively located on two sides of the third motor, the third motor is in transmission connection with the rollers, and the limiting assembly is located below the third motor.
Preferably, in order to realize the stable movement of the support plate, the limiting assembly comprises a limiting block and a limiting strip, the limiting block is fixed below the third motor, a notch is arranged below the limiting block, the notch is matched with the limiting strip, and the size of the bottom of the limiting strip is smaller than that of the top of the limiting strip.
The gantry crane with the windproof function for bridge construction has the advantages that the gantry crane with the windproof function for bridge construction can be automatically clamped on the convex rod after power failure while goods are transported by the aid of the transporting mechanism, so that a wire coil cannot rotate, the goods are prevented from falling and being damaged and causing safety accidents, moreover, the goods are positioned in a tubular protection space by the aid of the windproof mechanism in the transporting process, the goods are prevented from shaking due to wind blowing and affecting the transporting stability, and the practicability of equipment is improved by means of windproof protection.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a gantry crane with a wind-proof function for bridge construction according to the present invention;
FIG. 2 is a schematic structural diagram of a transportation mechanism of a gantry crane with a wind-proof function for bridge construction according to the present invention;
FIG. 3 is a schematic structural diagram of a wind-proof mechanism of a gantry crane with a wind-proof function for bridge construction according to the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 1;
in the figure: 1. the automatic lifting device comprises a top plate, 2 parts of a processor, 3 parts of a translation block, 4 parts of a support plate, 5 parts of a first motor, 6 parts of a sleeve, 7 parts of a rotating shaft, 8 parts of a wire coil, 9 parts of a steel wire rope, 10 parts of a lifting hook, 11 parts of a convex rod, 12 parts of an electromagnet, 13 parts of a spring, 14 parts of an iron rod, 15 parts of a windproof plate, 16 parts of a vertical plate, 17 parts of a lifting block, 18 parts of a support rod, 19 parts of a conveying belt, 20 parts of a transverse shaft, 21 parts of a universal wheel, 22 parts of a second motor, 23 parts of a screw rod, 24 parts of a bearing, 25 parts of a third motor, 26 parts of a roller, 27 parts of a limiting block, 28.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a gantry crane with a windproof function for bridge construction comprises a top plate 1, a processor 2, a translation block 3, a translation mechanism, a windproof mechanism, a transportation mechanism and two support plates 4, wherein the bottom ends of the support plates 4 are provided with the movement mechanism, the top plate 1 is erected on the two support plates 4, the translation block 3 is arranged below the top plate 1 through the translation mechanism, the windproof mechanism is arranged below the translation block 3, the processor 2 is fixed on one of the support plates 4, an antenna and a PLC are arranged in the processor 2, and the antenna is electrically connected with the PLC;
a PLC, i.e., a programmable logic controller, which employs a programmable memory for storing therein a program, executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controlling various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.
When the operating personnel uses the equipment to transport, the accessible cell-phone, devices such as computer send wireless signal to equipment, behind the antenna received signal by 2 inside treater, give PLC with signal transmission, PLC moves according to signal control device, utilize translation mechanism to drive translation piece 3 and remove, drive extension board 4 through moving mechanism and remove, adjust the position of translation piece 3, translation piece 3's below, utilize transport mechanism to accomplish the transportation of article, prevent through preventing wind the mechanism that the article transportation in receives the wind and blow and rock, influence transportation safety and stability.
As shown in fig. 2, the transportation mechanism includes a first motor 5, a sleeve 6, a rotating shaft 7, a wire coil 8, a steel wire rope 9, a hook 10 and a brake assembly, the first motor 5 and the sleeve 6 are both fixed below the translation block 3, the first motor 5 is in transmission connection with one end of the rotating shaft 7, the other end of the rotating shaft 7 is arranged in the sleeve 6, the wire coil 8 is coaxially fixed on the rotating shaft 7, the wire coil 8 is connected with the hook 10 through the steel wire rope 9, a plurality of convex rods 11 are arranged at both ends of the wire coil 8, the convex rods 11 are circumferentially and uniformly distributed at the periphery of the rotating shaft 7, the length of the convex rods 11 is greater than half of the outer diameter of the wire coil 8, a notch is arranged below the translation block 3, the brake assembly is arranged in the notch, the brake assembly includes an electromagnet 12, a spring 13, an iron rod 14 and two sliding units, the electromagnet 12 is fixed at the, two ends of the spring 13 are respectively connected with the electromagnet 12 and the center of the iron rod 14, two ends of the iron rod 14 are respectively connected with the two sliding units, and the first motor 5 and the electromagnet 12 are both electrically connected with the PLC;
the PLC controls a first motor 5 in the transportation mechanism to be started, a rotating shaft 7 is driven to rotate under the supporting action of a sleeve 6, a wire coil 8 and a convex rod 11 synchronously rotate, an electromagnet 12 is electrified to generate magnetism, the iron rod 14 is attracted to move close to a notch, a spring 13 is compressed, the stable movement of the iron rod 14 is realized by using a sliding unit, the wire coil 8 rotates, a steel wire rope 9 is tightened or loosened, objects are hung by using a lifting hook 10 to realize lifting transportation, after power failure occurs to a power supply facility or a power supply network of the equipment, the electromagnet 12 loses magnetism, the spring 13 in a compressed state pushes the iron rod 14 to move downwards under the action of a limiting unit, the rotating shaft 7 drives the convex rod 11 to rotate, the convex rod 11 is abutted against the iron rod 14, the position of the convex rod 11 is fixed in such a way, the angle of the rotating shaft 7 is fixed, the rotation of the wire coil 8 is prevented, and the objects under the, the safety accidents are avoided, and the safety of the equipment is improved.
As shown in fig. 3, the windproof mechanism includes two drive assemblies and two windproof plates 15, the shape of the horizontal cross section of the windproof plates 15 is a semicircular arc, the drive assembly is located between the two windproof plates 15, the drive assembly includes a vertical plate 16, a lifting unit, a lifting block 17 and two supporting rods 18, the vertical plate 16 is fixed below the translation block 3, the lifting unit is arranged on the vertical plate 16, the lifting unit is in transmission connection with the lifting block 17, two sides of the lifting block 17 are respectively hinged to the windproof plates 15 through the two supporting rods 18, and the top end of the windproof plates 15 is hinged to the translation block 3.
In preventing wind the mechanism, through fixing the lift operation on the riser 16 of translation piece 3 below, can drive elevator 17 and carry out the lifting movement, during elevator 17 rebound, act on two wind-proof boards 15 respectively through two branch 18 for two wind-proof boards 15 rotate upwards, are convenient for scrape the goods on lifting hook 10 or take off the goods on lifting hook 10. And when the elevator 17 moves down, through two spinal branch 18 pulling windbreak plate 15 rotation downwards for two windbreak plates 15 support and lean on the back together, form pipy enclosure space, make the stable transportation of enclosure space's goods, avoid receiving the interference of wind and influence freight's stability.
Preferably, in order to drive the translation block 3 to move, the translation mechanism comprises a conveyor belt 19, the conveyor belt 19 is arranged below the top plate 1, the conveyor belt 19 is electrically connected with the PLC, and the translation block 3 is fixed below the conveyor belt 19.
The PLC controls the conveyor belt 19 to start, and the conveyor belt 19 rotates to drive the translation block 3 below to move in the horizontal direction.
Preferably, in order to support the translation block 3, the moving mechanism further includes two transverse shafts 20, two ends of the transverse shafts 20 are respectively fixedly connected with the two support plates 4, and the translation block 3 is sleeved on the transverse shafts 20.
The two horizontal shafts 20 are fixed between the two support plates 4 and penetrate through the translation block 3, so that the translation block 3 can be supported to move smoothly.
Preferably, the bottom end of the riser 16 is provided with a universal wheel 21 to facilitate movement of the riser 16.
The universal wheels 21 are in contact with the ground, so that the vertical plates 16 can move conveniently.
As shown in fig. 3, the lifting unit includes a second motor 22, a screw rod 23 and a bearing 24, the second motor 22 and the bearing 24 are both fixed on the vertical plate 16, the second motor 22 is connected with one end of the screw rod 23 in a transmission manner, the other end of the screw rod 23 is arranged in the bearing 24, the lifting block 17 is sleeved on the screw rod 23, and a connection part of the lifting block 17 and the screw rod 23 is provided with a thread matched with the screw rod 23.
The PLC controls the second motor 22 to start, drives the screw rod 23 to rotate under the supporting action of the bearing 24, and the screw rod 23 acts on the lifting block 17 through threads, so that the lifting block 17 can move up and down along the axis of the screw rod 23.
Preferably, in order to avoid the corrosion of the screw rod 23, the screw rod 23 is coated with an anti-corrosion zinc coating. The corrosion-resistant zinc coating is utilized to prevent the screw rod 23 from contacting with water and generating oxidation and corrosion, and the stable transmission relation between the screw rod 23 and the lifting block 17 is ensured.
Preferably, in order to realize stable lifting movement of the iron rod 14, the sliding unit comprises a vertical rod 29, a sliding plate 30 and a connecting rod, the sliding plate 30 is fixed above the iron rod 14 through the connecting rod, the vertical rod 29 is fixed at the bottom in the recess, and the sliding plate 30 is sleeved on the vertical rod 29.
The moving direction of the sliding plate 30 is fixed by the vertical rod 29 fixed in the recess, and the moving direction of the iron rod 14 is fixed because the sliding plate 30 is fixedly connected with the iron rod 14 through the connecting rod.
Preferably, in order to prevent the slide 30 from coming off the vertical rod 29, the bottom end of the vertical rod 29 is provided with a projection 31. The projection 31 limits the moving range of the slide plate 30 and prevents the slide plate 30 from separating from the vertical rod 29.
As shown in fig. 4, the moving mechanism includes a third motor 25, a limiting component and two rollers 26, the third motor 25 is fixed at the bottom end of the support plate 4, the third motor 25 is electrically connected with the PLC, the two rollers 26 are respectively located at two sides of the third motor 25, the third motor 25 is in transmission connection with the rollers 26, and the limiting component is located below the third motor 25.
The PLC controls the third motor 25 to start, the idler wheels 26 on the two sides are driven to roll, the third motor 25 moves on the ground, and the limiting assembly is used for limiting the movement of the third motor 25, so that the support plate 4 can move stably.
Preferably, in order to realize the stable movement of the support plate 4, the limiting assembly comprises a limiting block 27 and a limiting strip 28, the limiting block 27 is fixed below the third motor 25, a notch is arranged below the limiting block 27, the notch is matched with the limiting strip 28, and the bottom of the limiting strip 28 is smaller than the top of the limiting strip 28. The gap below the limit block 27 is matched with the limit strip 28, and the limit strip 28 adopts a structural design with a large upper part and a small lower part, so that the limit block 27 can be prevented from being separated from the limit strip 28, and the stable movement of the support plate 4 is further ensured.
This portal crane is in the transportation goods in-process, electro-magnet 12 circular telegram, attract iron set 14 to remove, compression spring 13, and make things convenient for drum 8 in the pivot 7 to rotate, utilize wire rope 9 to drive lifting hook 10 elevating movement, realize the transportation, and drive elevator 17 to the removal through the lift unit, the pulling is two prevent wind board 15 and is close to the rotation each other, form pipy enclosure space, prevent that the transportation from receiving the wind-blown and taking place the slip, influence the stability of transportation, moreover, after the power supply system of equipment breaks down, compressed spring 13 promotes iron set 14 and moves down, the card is at nose bar 11, make pivot 7 unable rotation through nose bar 11, thereby the angular position of drum 8 has been fixed, avoid the goods on the lifting hook 10 to drop damage and cause the incident, thereby the safe operation of equipment has been realized, the practicality of equipment has been improved.
Compared with the prior art, this a portal crane who is used for bridge construction to have a function of preventing wind utilizes transport mechanism to realize the freight when, can automatic card at nose bar 11 after the outage for drum 8 can't rotate, avoids the goods to fall to damage and cause the incident, moreover, utilize in the transportation to prevent wind the mechanism and make the goods be located pipy protection space, avoid being blown and rock, influence the stability of transportation, through preventing wind the protection, improved the practicality of equipment.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The gantry crane with the windproof function for bridge construction is characterized by comprising a top plate (1), a processor (2), a translation block (3), a translation mechanism, a windproof mechanism, a conveying mechanism and two support plates (4), wherein the bottom ends of the support plates (4) are provided with the moving mechanism, the top plate (1) is erected on the two support plates (4), the translation block (3) is arranged below the top plate (1) through the translation mechanism, the windproof mechanism is arranged below the translation block (3), the processor (2) is fixed on one support plate (4), an antenna and a PLC are arranged in the processor (2), and the antenna is electrically connected with the PLC;
the transportation mechanism comprises a first motor (5), a sleeve (6), a rotating shaft (7), a wire coil (8), a steel wire rope (9), a lifting hook (10) and a brake assembly, wherein the first motor (5) and the sleeve (6) are fixed below the translation block (3), the first motor (5) is connected with one end of the rotating shaft (7) in a transmission manner, the other end of the rotating shaft (7) is arranged in the sleeve (6), the wire coil (8) is coaxially fixed on the rotating shaft (7), the wire coil (8) is connected with the lifting hook (10) through the steel wire rope (9), a plurality of convex rods (11) are arranged at two ends of the wire coil (8), the convex rods (11) are circumferentially and uniformly distributed at the periphery of the rotating shaft (7), the length of the convex rods (11) is greater than half of the outer diameter of the wire coil (8), a notch is arranged below the translation block (3), and the brake assembly is arranged in the notch, the brake assembly comprises an electromagnet (12), a spring (13), an iron rod (14) and two sliding units, the electromagnet (12) is fixed at the bottom in the notch, two ends of the spring (13) are respectively connected with the electromagnet (12) and the center of the iron rod (14), two ends of the iron rod (14) are respectively connected with the two sliding units, and the first motor (5) and the electromagnet (12) are electrically connected with the PLC;
prevent wind mechanism and include two drive assembly and two windbreak boards (15), the shape of the horizontal cross section of windbreak board (15) is half-circular arc, drive assembly is located between two windbreak boards (15), drive assembly includes riser (16), lifting unit, elevator (17) and two branch (18), the below at translation piece (3) is fixed in riser (16), the lifting unit sets up on riser (16), the lifting unit is connected with elevator (17) transmission, the both sides of elevator (17) are articulated through two branch (18) and windbreak board (15) respectively, the top and the translation piece (3) of windbreak board (15) are articulated.
2. The gantry crane with wind-proof function for bridge construction according to claim 1, wherein the translation mechanism comprises a conveyor belt (19), the conveyor belt (19) is arranged below the top plate (1), the conveyor belt (19) is electrically connected with the PLC, and the translation block (3) is fixed below the conveyor belt (19).
3. The gantry crane with the windproof function for bridge construction according to claim 1, wherein the moving mechanism further comprises two transverse shafts (20), two ends of each transverse shaft (20) are respectively and fixedly connected with the two support plates (4), and the translation block (3) is sleeved on the transverse shafts (20).
4. The gantry crane with wind proofing function for bridge construction according to claim 1, wherein universal wheels (21) are provided at the bottom ends of said risers (16).
5. The gantry crane with the windproof function for bridge construction according to claim 1, wherein the lifting unit comprises a second motor (22), a screw rod (23) and a bearing (24), the second motor (22) and the bearing (24) are both fixed on the vertical plate (16), the second motor (22) is in transmission connection with one end of the screw rod (23), the other end of the screw rod (23) is arranged in the bearing (24), the lifting block (17) is sleeved on the screw rod (23), and the joint of the lifting block (17) and the screw rod (23) is provided with a thread matched with the screw rod (23).
6. The gantry crane with wind-proof function for bridge construction according to claim 5, wherein said screw rod (23) is coated with an anti-corrosion zinc coating.
7. The gantry crane with wind-proof function for bridge construction according to claim 1, wherein the sliding unit comprises a vertical rod (29), a sliding plate (30) and a connecting rod, the sliding plate (30) is fixed above the iron rod (14) through the connecting rod, the vertical rod (29) is fixed at the bottom in the recess, and the sliding plate (30) is sleeved on the vertical rod (29).
8. The gantry crane with wind-proof function for bridge construction as claimed in claim 7, wherein the bottom end of the vertical rod (29) is provided with a projection (31).
9. The gantry crane with the windproof function for bridge construction according to claim 1, wherein the moving mechanism comprises a third motor (25), a limiting component and two rollers (26), the third motor (25) is fixed at the bottom end of the support plate (4), the third motor (25) is electrically connected with the PLC, the two rollers (26) are respectively located at two sides of the third motor (25), the third motor (25) is in transmission connection with the rollers (26), and the limiting component is located below the third motor (25).
10. The gantry crane with the windproof function for bridge construction according to claim 1, wherein the limiting component comprises a limiting block (27) and a limiting strip (28), the limiting block (27) is fixed below the third motor (25), a notch is arranged below the limiting block (27), the notch is matched with the limiting strip (28), and the size of the bottom of the limiting strip (28) is smaller than that of the top of the limiting strip (28).
CN202010092378.4A 2020-02-14 2020-02-14 A portal crane for bridge construction has a function of preventing wind Withdrawn CN111170165A (en)

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Application Number Priority Date Filing Date Title
CN202010092378.4A CN111170165A (en) 2020-02-14 2020-02-14 A portal crane for bridge construction has a function of preventing wind

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Application Number Priority Date Filing Date Title
CN202010092378.4A CN111170165A (en) 2020-02-14 2020-02-14 A portal crane for bridge construction has a function of preventing wind

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115626571A (en) * 2022-12-23 2023-01-20 河南省矿山起重机有限公司 Self-locking universal portal crane

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