CN114084794A - Automatic lifting appliance for segmental beam and construction method of automatic lifting appliance - Google Patents
Automatic lifting appliance for segmental beam and construction method of automatic lifting appliance Download PDFInfo
- Publication number
- CN114084794A CN114084794A CN202111310469.1A CN202111310469A CN114084794A CN 114084794 A CN114084794 A CN 114084794A CN 202111310469 A CN202111310469 A CN 202111310469A CN 114084794 A CN114084794 A CN 114084794A
- Authority
- CN
- China
- Prior art keywords
- longitudinal
- hoisting
- section
- lifting appliance
- hydraulic cylinder
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/08—Trolleys or crabs, e.g. operating above runways with turntables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
- B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses an automatic lifting appliance for a segmental beam, which comprises: the hoisting beam is connected with hoisting equipment; the rotary cross beam is in rotary connection with the hoisting beam; the pair of movable longitudinal beams are arranged on two opposite sides of the rotary cross beam in a sliding mode; the longitudinal movement sliding blocks are arranged corresponding to each guide groove of the movable longitudinal beam, and the pair of longitudinal movement sliding blocks are connected through a sliding block connecting rod; the section beam hanger rods correspond to each longitudinal moving slider and are rotatably connected with the longitudinal moving sliders, the upper ends of the section beam hanger rods are connected with rotary push rods, the two rotary push rods corresponding to the same moving longitudinal beam are hinged through a hanger rod connecting rod, the section beam hanger rods just penetrate through the guide grooves and are fixedly connected with hole site padlocks at the lower ends, and the section beam hanger rods are matched with the section beam hoisting holes. The invention also discloses a construction method of the automatic lifting appliance for the segmental beam. The lifting appliance is safe and orderly in the lifting process, accurate and faultless in lifting, and capable of reducing the number of workers in lifting construction and guaranteeing construction safety.
Description
Technical Field
The invention relates to the technical field of segment beam hoisting and carrying equipment. More particularly, the invention relates to an automatic lifting appliance for a segmental beam and a construction method thereof.
Background
Traditional segmental beam hoist and mount adopt artifical supplementary fixed jib hoist of installation, are equipped by the jack-up and hang the hoist to segmental beam top, and the relative position between adjustment jib and the segmental beam upper surface lewis hole is pull to the manual work, accomplishes accurate counterpoint back hoist and transfers, again by artifical installation fixed anchorage device, accomplishes a hoist and counterpoints and fix. The traditional segmental beam hoisting method needs a plurality of workers for assisting in aligning and installing the fixing anchors once, so that the time required for once hoisting is long, and the segmental beam is usually hoisted and stacked for many times from a prefabrication field to a construction site.
In the process of implementing the invention of the present application, the inventor finds that at least the following problems exist in the prior art: 1. when a traditional segmental beam is hoisted, accurate alignment is completed mainly by means of manual assistance, a hanger rod of a hanger enters a segmental beam hoisting hole, and the adjusting process is slow; 2. the traditional segment beam lifting appliance and the segment beam are connected into finish-rolled twisted steel bars, so that the connection process consumes much time and needs much labor; 3. the transition times of the segmental beam are many, the labor consumption and the accumulated amount of working hours are large, and the risks of high-altitude operation and installation process exist.
Disclosure of Invention
The invention aims to provide an automatic lifting appliance for a segmental beam and a construction method thereof, which solve the problem of low efficiency of repeated lifting of the segmental beam.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an automated spreader for sectional beams, comprising:
the center of the top of the hoisting beam is connected with a lifting hook or a connector of hoisting equipment;
the rotary cross beam is positioned below the hoisting beam in parallel and is in rotary connection with the hoisting beam through an adapter;
the pair of movable longitudinal beams are arranged on two opposite sides of the rotary cross beam in a sliding mode, and a pair of guide grooves are formed in the movable longitudinal beams and are arranged along the center line of the movable longitudinal beams;
the longitudinal movement sliding blocks are arranged corresponding to each guide groove of each movable longitudinal beam, and a pair of longitudinal movement sliding blocks are arranged above the guide grooves and connected through sliding block connecting rods;
the section beam hanger rods correspond to each longitudinal moving slider and are respectively provided with one, the section beam hanger rods vertically penetrate through the longitudinal moving sliders and are rotatably connected with the longitudinal moving sliders, the upper ends of the section beam hanger rods are connected with rotary push rods, the rotary push rods of the section beam hanger rods corresponding to the same moving longitudinal beam are hinged through hanger rod connecting rods, the section beam hanger rods just pass through the guide grooves and are fixedly connected with hole site padlocks at the lower ends, and the section beam hanger rods are matched with the section beam hoisting holes.
Preferably, sliding plates are fixedly arranged on the upper surfaces of the two sides of the rotary cross beam, and the movable longitudinal beam is arranged on the sliding plates in a sliding mode.
Preferably, the pair of movable longitudinal beams are connected through longitudinal beam connecting rods, the longitudinal beam connecting rods are provided with a pair and are respectively symmetrically arranged on two transverse sides of the movable longitudinal beams, a transverse moving hydraulic cylinder is fixed on the rotary cross beam, and the end part of a telescopic rod of the transverse moving hydraulic cylinder is fixedly connected to one of the movable longitudinal beams.
Preferably, the longitudinal beam connecting rod is connected with the movable longitudinal beam through a bolt, and a plurality of foundation gaskets are further arranged between the contact surfaces of the longitudinal beam connecting rod and the movable longitudinal beam.
Preferably, the slide block connecting rod comprises a pair of bottom plates and a slide plate, the pair of bottom plates are respectively and correspondingly fixedly connected with a pair of longitudinal moving slide blocks, the pair of bottom plates are respectively provided with a long strip-shaped hole, the slide plate is tightly attached to the upper parts of the pair of bottom plates and is overlapped with the bottom plates, and threaded holes are correspondingly arranged on two sides of the slide plate and respectively correspond to the long strip-shaped holes in the pair of bottom plates and are connected through bolts.
Preferably, all be provided with on the removal longeron and indulge and move the pneumatic cylinder, its telescopic link fixed connection to the slide bottom surface, the slide top surface still articulates and is provided with jib padlock pneumatic cylinder, its telescopic link articulate to on the jib connecting rod, realize the gyration action through setting up rotary hydraulic cylinder between hoist and mount roof beam and the gyration crossbeam.
Preferably, the rotary cross beam is provided with an electric cabinet and a hydraulic system, the hydraulic system is used for controlling the transverse moving hydraulic cylinder, the longitudinal moving hydraulic cylinder and the boom padlock hydraulic cylinder to move, the bottoms of the two longitudinal sides of the rotary cross beam are respectively provided with a fixed rod which transversely extends to the outside of the rotary cross beam, the fixed rods are provided with displacement sensors and image collectors which respectively acquire corresponding distance data and image data and transmit the distance data and the image data to the electric cabinet, and the electric cabinet transmits a control instruction to the hydraulic system.
Preferably, a spring pressing device is provided corresponding to each section beam hanger rod, and includes:
the connecting plate is transversely and slidably arranged on the bottom surface of the movable longitudinal beam, the connecting plate is provided with a through hole, and the segmental beam hanging rod just passes through the through hole;
the positioning plug is conical and matched with the section beam hoisting hole, and is sleeved on the section beam hoisting rod in a sliding manner through a central hole of the positioning plug;
and the two ends of the spring are respectively connected to the connecting plate and the positioning plug.
Preferably, a flexible wedge block is fixedly arranged on the top surface of the hole site padlock.
The invention also provides a construction method of the automatic lifting appliance for the segmental beam, which comprises the following steps:
the method comprises the following steps: before hoisting, checking whether a hole site rectangle taking the center of a segment beam hoisting hole as a vertex and a suspender rectangle taking the centers of four segment beam suspenders as the vertices are congruent rectangles, if not, adjusting the longitudinal distance of the segment beam suspenders by increasing and decreasing foundation gaskets between contact surfaces of a longitudinal beam connecting rod and a movable longitudinal beam, and adjusting the transverse distance of the segment beam suspenders by adjusting the overlapped area between a pair of bottom plates and a sliding plate;
step two: hoisting the automatic lifting appliance of the section beam above the section beam by using hoisting equipment, monitoring position information of the movable longitudinal beam, the slider connecting rod and the section beam lifting rod by using a displacement sensor, if all mechanisms are in a set stroke middle position, not actuating each hydraulic cylinder, otherwise actuating each mechanism to return to the set stroke middle position by using the hydraulic cylinders, and ensuring that the gravity center of the automatic lifting appliance of the section beam falls on the rectangular geometric center of the lifting rod;
step three: the automatic lifting appliance for lowering the section beam by the lifting equipment is characterized in that the image collector collects the relative position between the hanger rod rectangle and the hole site rectangle in the horizontal direction at the moment, and drives the rotary cross beam to rotate in the horizontal direction, so that each side of the hanger rod rectangle and each side of the hole site rectangle are kept parallel in the overlooking direction, and the angle deviation is eliminated;
step four: continuously lowering the automatic lifting appliance of the section beam, judging the horizontal distance between the rectangular boom and each side of the hole site rectangle through the pictures collected by the image collector, controlling the corresponding hydraulic cylinder to act to drive the movable longitudinal beam and the longitudinal slide block to act, and eliminating the horizontal distance deviation between each side of the rectangular boom and each side of the hole site rectangle in real time to ensure that the two rectangles are basically overlapped in the overlooking direction;
step five: continuously lowering the automatic lifting appliance of the sectional beam, acquiring distance information between the automatic lifting appliance of the sectional beam and the upper surface of the sectional beam by using a displacement sensor, and lifting the automatic lifting appliance of the sectional beam if the hole site padlock and the lifting hole of the sectional beam are not aligned correctly after the distance between the automatic lifting appliance of the sectional beam and the sectional beam enters a set range, and performing secondary alignment until the hole site padlock at the lower end of the lifting rod of the sectional beam can smoothly enter the lifting hole site of the sectional beam;
step six: monitoring the relative distance between the automatic lifting appliance of the section beam and the section beam by a displacement sensor, stopping lowering the automatic lifting appliance of the section beam after reaching a specified distance range, driving a hydraulic cylinder of a suspender padlock to act, enabling a section beam suspender to rotate 90 degrees relative to the automatic lifting appliance of the section beam, completing the padlock, pressing a positioning plug in a section beam hoisting hole position by a spring pressing device at the moment, and restraining the section beam suspender to move in the horizontal direction in the hole position;
step seven: after the padlock is finished, driving each hydraulic cylinder to act, enabling each mechanism to return to the stroke middle position, ensuring that the gravity center of the section beam lifting appliance and the gravity center of the section beam coincide in the overlooking direction, and finishing the autonomous alignment and padlock processes;
step eight: the crane lifts, after the hoisting section beam reaches the designated position, the boom padlock hydraulic cylinder is driven to act, the section beam boom is rotated to the initial position, the padlock is removed, and then the section beam automatic position lifting appliance is lifted to the next working position;
step nine: and repeating the second step to the eighth step to finish repeated hoisting of the segment beam for multiple times.
The invention at least comprises the following beneficial effects:
1. the three-degree-of-freedom pose adjusting mechanism and the four-connecting-rod synchronous rotating mechanism are adopted, a suspender rectangle with the centers of four suspenders as vertexes in a certain range can rotate, transversely move and longitudinally move relative to the sectional beam, and the displacement sensor and the image collector are used for assisting to eliminate position deviation, so that automatic accurate alignment and automatic padlock between the sectional beam suspender and the sectional beam hoisting hole are completed;
2. according to the method, a padlock type hanging rod is adopted, automatic rotation locking and resetting unlocking are realized, and the stress surface of the padlock is designed to be a flexible contact inclined surface which can adapt to the inclined surface of the inner cavity of the segmental beam, so that the uniform stress is ensured;
3. the suspension rod positioning plug is compressed by the spring compressing device, and is compressed into the section beam hoisting hole in a self-adaptive manner, so that the relative stability of the suspension rod relative to the section beam is ensured;
4. this application adopts intelligent monitored control system, and the operating condition of the automatic hoist of real-time supervision festival section roof beam controls each mechanism action safe orderly, accurate execution, and workman's quantity when reducing the hoist and mount construction guarantees construction safety.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic view of the overall structure of the spreader of the present invention;
fig. 2 is a front view of the spreader of the present invention;
fig. 3 is a top view of the spreader of the present invention;
fig. 4 is a bottom view of the spreader of the present invention;
fig. 5 is a schematic view of a construction of a segmented beam hanger bar of the present invention.
Description of reference numerals:
1. the device comprises a hoisting beam, 2, an adapter, 3, a rotary cross beam, 4, a longitudinal beam connecting rod, 5, a movable longitudinal beam, 6, a longitudinal moving slide block, 7, a section beam suspender, 8, a flexible wedge block, 9, a positioning plug, 10, a displacement sensor, 11, an image collector, 12, a spring, 13, a transverse moving hydraulic cylinder, 14, a rotary hydraulic cylinder, 15, an electric cabinet, 16, a hydraulic system, 17, a longitudinal moving hydraulic cylinder, 18, a suspender padlock hydraulic cylinder, 19, a suspender connecting rod, 20, a slide block connecting rod, 21, a suspender rectangle, 22, a rotary push rod, 23, a hole position padlock, 24, a strip-shaped hole, 25 and a guide groove.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. The longitudinal direction of the present application refers to the left-right direction in fig. 3, and the lateral direction refers to the up-down direction in fig. 3.
As shown in fig. 1 to 5, the present invention provides an automated spreader for sectional beams, comprising:
the center of the top of the hoisting beam 1 is connected with a hook or a connector of hoisting equipment;
the rotary cross beam 3 is positioned below the hoisting beam 1 in parallel, and the rotary cross beam 3 is in rotary connection with the hoisting beam 1 through an adapter 2;
a pair of movable longitudinal beams 5 slidably disposed on opposite sides of the revolving cross member 3 in the longitudinal direction, the movable longitudinal beams 5 being provided with a pair of guide grooves 25 disposed along the center line of the movable longitudinal beams 5;
the longitudinal movement sliding blocks 6 are arranged corresponding to each guide groove 25 of each movable longitudinal beam 5, and a pair of longitudinal movement sliding blocks 6 are arranged above the guide grooves 25 and are connected through sliding block connecting rods 20;
the segmental beam hanger rods 7 correspond to each longitudinal movement slider 6 and are respectively provided with one, the segmental beam hanger rods 7 vertically penetrate through the longitudinal movement sliders 6 and are rotatably connected with the longitudinal movement sliders 6, the upper ends of the segmental beam hanger rods 7 are connected with rotary push rods 22, the rotary push rods 22 of the segmental beam hanger rods 7 corresponding to the same movable longitudinal beam 5 are hinged through hanger rod connecting rods 19, the segmental beam hanger rods 7 just penetrate through the guide grooves 25, and the lower ends of the segmental beam hanger rods are fixedly connected with hole padlocks 23 which are matched with segmental beam hoisting holes.
In the technical scheme, the three-degree-of-freedom posture adjusting mechanism and the four-connecting-rod synchronous rotating mechanism realize the control of four segment beam suspenders 7, the rotation of the rotating cross beam 3, the longitudinal movement of the movable longitudinal beam 5 and the transverse movement of the longitudinal movement sliding block 6 form the three-degree-of-freedom posture adjusting mechanism, the three-degree-of-freedom adjusting mechanism can enable a suspender rectangle 21 taking the center of the four segment beam suspenders 7 as a vertex to rotate, transversely move and longitudinally move in the horizontal direction, the sliding block connecting rod 20, the pair of rotating push rods 22 and the suspender connecting rod 19 form the four-connecting-rod synchronous rotating mechanism, the four-connecting-rod synchronous mechanism can enable the four segment beam suspenders 7 to synchronously rotate 90 degrees relative to a lifting appliance to complete padlock, a hole position padlock 23 at the lower end of the segment beam suspender 7 is in contact with the inner cavity of the segment beam hoisting hole when the segment beam is lifted to form a stress surface, the segment beam hoisting hole is rectangular, and the hole position padlock 23 just extends into the segment beam hoisting hole, and then rotated 90 deg. to complete the padlock.
The adapter 2 may be an existing swing mechanism, and the specific structure is not described herein again, and the swing beam 3 swings relative to the hoisting beam 1 by driving the adapter 2 to move. The displacement girder 5 is arranged so as to be displaceable in the longitudinal direction relative to the revolving cross member 3, so that the segment girder suspension rods 7 are brought into longitudinal adjustment. The transverse movement of the driving slide connecting rod 20 along the moving longitudinal beam 5 and the transverse movement of the longitudinal moving slide 6 drive the section beam suspender 7 to realize the transverse adjustment. The segmental beam hanger rods 7 are matched and connected with the longitudinal movement sliding blocks 6, and the two longitudinal movement sliding blocks 6 are connected by the sliding block connecting rods 20 and then are arranged on the central line of the movement longitudinal beam 5 to realize synchronous longitudinal movement; the top end of the segmental beam suspender 7 is provided with a rotary push rod 22, and the two rotary push rods 22 are connected by a suspender connecting rod 19 to form a four-connecting-rod synchronous rotary mechanism, so that the two segmental beam suspenders 7 can synchronously rotate to realize the independent padlock action.
In another technical scheme, sliding plates are fixedly arranged on the upper surfaces of two sides of the rotary cross beam 3, the movable longitudinal beam 5 is arranged on the sliding plates in a sliding mode, and the sliding plates are made of wear-resistant materials and are wear-resistant when the movable longitudinal beam 5 and the rotary cross beam 3 slide in a contact mode.
In another technical scheme, a pair of movable longitudinal beams 5 are connected through longitudinal beam connecting rods 4, the longitudinal beam connecting rods 4 are provided with a pair and are respectively symmetrically arranged at two transverse sides of the movable longitudinal beams 5, a transverse hydraulic cylinder 13 is fixed on the rotary cross beam 3, and the end part of a telescopic rod of the transverse hydraulic cylinder is fixedly connected to one movable longitudinal beam 5. A longitudinal beam connecting rod 4 is additionally arranged between the pair of movable longitudinal beams 5, so that the pair of movable longitudinal beams 5 realize synchronous transverse movement, and the synchronous movement is realized by driving a transverse moving hydraulic cylinder 13.
In another technical scheme, the longitudinal beam connecting rod 4 is connected with the movable longitudinal beam 5 through a bolt, and a plurality of foundation gaskets are further arranged between contact surfaces of the longitudinal beam connecting rod 4 and the movable longitudinal beam 5. After the bolts are detached between the longitudinal beam connecting rod 4 and the movable longitudinal beam 5, the distance between the pair of movable longitudinal beams 5 is adjusted according to needs, the foundation gasket is increased or decreased, and then the movable longitudinal beams are connected through the bolts, so that the distance between the pair of movable longitudinal beams 5 is finely adjusted according to actual construction conditions, and further the longitudinal distance between the two segmental beam hanging rods 7 is adjusted.
In another technical scheme, the slider connecting rod 20 includes a pair of bottom plates and a sliding plate, the pair of bottom plates are respectively and fixedly connected with the pair of longitudinal movement sliders 6, the pair of bottom plates are respectively provided with a strip-shaped hole 24, the sliding plate is tightly attached to the upper side of the pair of bottom plates and is overlapped with the bottom plates, and two sides of the sliding plate are correspondingly provided with threaded holes which respectively correspond to the strip-shaped holes 24 on the pair of bottom plates and are connected through bolts. Through dismantling the bolt, remove the overlapping area of a pair of bottom plate and slide to the horizontal interval of two section roof beam jibs 7 is finely tuned, and the adjustment is accomplished and is worn strip-shaped hole 24 and screw hole through the bolt and get up bottom plate and slide fixed connection again.
In another technical scheme, longitudinal moving hydraulic cylinders 17 are arranged on the moving longitudinal beams 5, telescopic rods of the longitudinal moving hydraulic cylinders are fixedly connected to the bottom surface of the sliding plate, a suspender padlock hydraulic cylinder 18 is further hinged to the top surface of the sliding plate, the telescopic rods of the longitudinal moving hydraulic cylinders are hinged to a suspender connecting rod 19, and the hoisting beam 1 and the rotary beam 3 are rotated by arranging a rotary hydraulic cylinder 14. The integral transverse movement of the two segmental beam suspenders 7 connected with the longitudinal movement sliding block 6 is realized by the driving of a longitudinal movement hydraulic cylinder 17, the synchronous rotation of the two transverse segmental beam suspenders 7 for 90 degrees is realized by the driving of a suspender padlock hydraulic cylinder 18, and the rotation of the rotary cross beam 3 relative to the hoisting beam 1 is realized by the driving of a rotary oil cylinder.
In another technical scheme, an electric cabinet 15 and a hydraulic system 16 are arranged on the rotary beam 3, the hydraulic system 16 is used for controlling the transverse hydraulic cylinder 13, the longitudinal hydraulic cylinder 17 and the suspender padlock hydraulic cylinder 18 to act, the bottom parts of the two longitudinal sides of the revolving cross beam 3 are respectively provided with a fixed rod, which extends to the outside of the rotary beam 3 along the transverse direction, a displacement sensor 10 and an image collector 11 are arranged on the fixed rod, which respectively acquires corresponding distance data and image data and transmits the distance data and the image data to the electric control box 15, the electric control box 15 acquires corresponding control instructions after collecting and processing the distance data and the image data, and then transmits the control instructions to the hydraulic system 16, the hydraulic system 16 controls the hydraulic cylinders to act, and here, the electric cabinet 15 collects data and issues control commands to become mature prior art, which is not described herein again. Through the setting of electric cabinet 15, hydraulic system 16, displacement sensor 10 and image collector 11, supplementary hoist and mount, collect stroke information as feedback signal, avoided artifical observation adjustment position, realized the intellectuality, the operating condition of the automatic hoist of real-time supervision festival section roof beam controls the safe orderly, accurate execution of each mechanism action, reduces the workman's quantity when the hoist and mount construction, ensures construction safety. The specific positions and the number of the displacement sensors 10 and the image collectors 11 are reasonably arranged according to the actual construction condition.
In another technical scheme, correspond every section roof beam jib 7 and all be provided with spring hold-down device, it includes:
the connecting plate is transversely and slidably arranged on the bottom surface of the movable longitudinal beam 5, and is provided with a through hole, and the section beam hanger rod 7 just passes through the through hole;
the positioning plug 9 is conical and matched with the section beam hoisting hole, and the positioning plug 9 is sleeved on the section beam hoisting rod 7 in a sliding manner through a central hole of the positioning plug 9;
and a pair of springs 12 symmetrically arranged at two sides of the section beam hanger rod 7, wherein two ends of each spring 12 are respectively connected to the connecting plate and the positioning plug 9.
In the technical scheme, the suspender positioning plug 9 is arranged below the segmental beam suspender 7 and is pressed by the spring pressing device, so that the segmental beam suspender 7 is ensured to be positioned in the middle of the segmental beam hoisting hole. Spring closing device installs in 7 middle parts of section roof beam jib, be connected with 7 cooperations of section roof beam jib, slide setting through the connecting plate with 7 synchronous indulging of section roof beam jibs and move but do not produce the gyration action, spring closing device lower extreme installation jib stopper 9, stopper 9 adopts the design of awl cylindricality, stopper 9 matches with section roof beam hole for hoist just, in getting into section roof beam hole for hoist, can make 7 more accurate entering section roof beam hole for hoist of section roof beam jib and retrain its horizontal direction's removal.
In another technical scheme, a flexible wedge 8 is fixedly arranged on the top surface of the hole site padlock 23. A flexible wedge block 8 which has a certain inclination and is adaptive to the inner cavity is arranged between the hole site padlock 23 and the contact surface of the inner cavity of the segmental beam, so that the hole site padlock 23 is in surface contact with the inner cavity of the segmental beam, and the uniform stress of the contact surface is ensured.
The invention also discloses a construction method of the automatic lifting appliance for the segmental beam, which is characterized by comprising the following steps of:
the method comprises the following steps: before hoisting, checking whether a hole site rectangle taking the center of a segment beam hoisting hole as a vertex and a suspender rectangle 21 taking the center of four segment beam suspenders 7 as a vertex are congruent rectangles or not, if not, adjusting the longitudinal distance of the segment beam suspenders 7 by increasing or decreasing the basic gasket between the contact surfaces of a longitudinal beam connecting rod 4 and a movable longitudinal beam 5, and adjusting the transverse distance of the segment beam suspenders 7 by adjusting the overlapped area between a pair of bottom plates and sliding plates;
step two: hoisting the segment beam automatic lifting appliance to a certain distance above the segment beam by using hoisting equipment, monitoring the position information of the movable longitudinal beam 5, the slider connecting rod 20 and the segment beam suspender 7 by using the displacement sensor 10, if all the mechanisms are in a set stroke middle position, namely a set initial position, not actuating each hydraulic cylinder, and otherwise actuating each hydraulic cylinder to enable each mechanism to return to the set stroke middle position, so as to ensure that the gravity center of the segment beam automatic lifting appliance is positioned at the geometric center of the suspender rectangle 21;
step three: the automatic lifting appliance for lowering the section beam of the hoisting equipment is characterized in that the image collector 11 collects the relative position between the hanger rod rectangle 21 and the hole site rectangle in the horizontal direction at the moment, and drives the rotary cross beam 3 to rotate in the horizontal direction, so that each side of the hanger rod rectangle 21 and each side of the hole site rectangle are kept parallel in the overlooking direction, and the angle deviation is eliminated;
step four: continuously lowering the automatic lifting appliance of the section beam, judging the horizontal distance between the rectangular 21 of the lifting rod and each side of the rectangular hole site through the pictures collected by the image collector 11, controlling the corresponding hydraulic cylinder to act to drive the movable longitudinal beam 5 and the longitudinal slide block 6 to act, and eliminating the horizontal distance deviation between each side of the rectangular 21 of the lifting rod and each side of the rectangular hole site in real time to ensure that the two rectangles are basically superposed in the overlooking direction;
step five: continuously lowering the automatic lifting appliance of the section beam, acquiring distance information between the automatic lifting appliance of the section beam and the upper surface of the section beam by using the displacement sensor 10, and after the distance between the automatic lifting appliance of the section beam and the section beam enters a set range, if the hole site padlock 23 and the lifting hole of the section beam are not aligned correctly, lifting the automatic lifting appliance of the section beam to a certain height, and performing secondary alignment until the hole site padlock 23 at the lower end of the section beam suspender 7 can smoothly enter the lifting hole site of the section beam;
step six: monitoring the relative distance between the automatic lifting appliance of the section beam and the section beam by a displacement sensor 10, stopping lowering the automatic lifting appliance of the section beam after reaching a specified distance range, driving a hanger rod padlock hydraulic cylinder 18 to act, enabling a section beam hanger rod 7 to rotate 90 degrees relative to the automatic lifting appliance of the section beam, completing padlock, pressing a positioning plug 9 in a section beam hoisting hole by a spring pressing device at the moment, and restraining the section beam hanger rod 7 from moving in the horizontal direction in the hole;
step seven: after the padlock is finished, driving each hydraulic cylinder to act, enabling each mechanism to return to the stroke middle position, ensuring that the gravity center of the section beam lifting appliance and the gravity center of the section beam coincide in the overlooking direction, and finishing the autonomous alignment and padlock processes;
step eight: the crane lifts, after the hoisting section beam reaches the designated position, the boom padlock hydraulic cylinder 18 is driven to act, the section beam boom 7 is made to rotate to the initial position, the padlock is removed, and then the section beam automatic position lifting appliance is lifted to the next working position;
step nine: and repeating the second step to the eighth step to finish repeated hoisting of the segment beam for multiple times.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. An automated spreader for a segmented beam, comprising:
the center of the top of the hoisting beam is connected with a lifting hook or a connector of hoisting equipment;
the rotary cross beam is positioned below the hoisting beam in parallel and is in rotary connection with the hoisting beam through an adapter;
the pair of movable longitudinal beams are arranged on two opposite sides of the rotary cross beam in a sliding mode, and a pair of guide grooves are formed in the movable longitudinal beams and are arranged along the center line of the movable longitudinal beams;
the longitudinal movement sliding blocks are arranged corresponding to each guide groove of each movable longitudinal beam, and a pair of longitudinal movement sliding blocks are arranged above the guide grooves and connected through sliding block connecting rods;
the section beam hanger rods correspond to each longitudinal moving slider and are respectively provided with one, the section beam hanger rods vertically penetrate through the longitudinal moving sliders and are rotatably connected with the longitudinal moving sliders, the upper ends of the section beam hanger rods are connected with rotary push rods, the rotary push rods of the section beam hanger rods corresponding to the same moving longitudinal beam are hinged through hanger rod connecting rods, the section beam hanger rods just pass through the guide grooves and are fixedly connected with hole site padlocks at the lower ends, and the section beam hanger rods are matched with the section beam hoisting holes.
2. The automated spreader for sectional beams according to claim 1, wherein sliding plates are fixedly arranged on the upper surfaces of both sides of the revolving cross beam, and the movable longitudinal beams are slidably arranged on the sliding plates.
3. The automated spreader for sectional beams according to claim 1, wherein a pair of moving longitudinal beams are connected by a longitudinal beam connecting rod, the longitudinal beam connecting rod is provided with a pair of longitudinal beams and is respectively and symmetrically arranged at two sides of the moving longitudinal beams in the transverse direction, a traversing hydraulic cylinder is fixed on the rotary cross beam, and the end part of a telescopic rod of the traversing hydraulic cylinder is fixedly connected to one of the moving longitudinal beams.
4. The automated segment beam spreader of claim 3, wherein the longitudinal beam connecting rod is connected with the moving longitudinal beam through a bolt, and a plurality of foundation pads are further arranged between contact surfaces of the longitudinal beam connecting rod and the moving longitudinal beam.
5. The automated segment beam hanger according to claim 4, wherein the slide rod comprises a pair of bottom plates and a slide plate, the pair of bottom plates are respectively and fixedly connected with the pair of longitudinal movement slides, the pair of bottom plates are respectively provided with a long strip-shaped hole, the slide plate is tightly attached to the upper part of the pair of bottom plates and is overlapped with the bottom plates, and the two sides of the slide plate are respectively provided with a threaded hole which is respectively corresponding to the long strip-shaped holes on the pair of bottom plates and is connected with the long strip-shaped holes through bolts.
6. The automated segment beam hanger according to claim 5, wherein each of the moving longitudinal beams is provided with a longitudinal moving hydraulic cylinder, a telescopic rod of the longitudinal moving hydraulic cylinder is fixedly connected to the bottom surface of the sliding plate, the top surface of the sliding plate is further provided with a boom padlock hydraulic cylinder in an articulated manner, the telescopic rod of the boom padlock hydraulic cylinder is articulated to the boom connecting rod, and the hoisting beam and the revolving cross beam realize revolving motion through the arrangement of a revolving hydraulic cylinder.
7. The automated lifting appliance for the segmental beams according to claim 6, wherein an electric control box and a hydraulic system are arranged on the rotary cross beam, the hydraulic system is used for controlling the transverse hydraulic cylinder, the longitudinal hydraulic cylinder and the hanger rod padlock hydraulic cylinder to move, fixing rods are arranged at the bottoms of the two longitudinal sides of the rotary cross beam and extend to the outside of the rotary cross beam along the transverse direction, a displacement sensor and an image collector are arranged on the fixing rods and respectively acquire corresponding distance data and image data and transmit the distance data and the image data to the electric control box, and the electric control box transmits a control command to the hydraulic system.
8. The segment beam automated spreader of claim 1, wherein a spring hold down device is provided for each segment beam hanger rod, comprising:
the connecting plate is transversely and slidably arranged on the bottom surface of the movable longitudinal beam, the connecting plate is provided with a through hole, and the segmental beam hanging rod just passes through the through hole;
the positioning plug is conical and matched with the section beam hoisting hole, and is sleeved on the section beam hoisting rod in a sliding manner through a central hole of the positioning plug;
and the two ends of the spring are respectively connected to the connecting plate and the positioning plug.
9. The segment beam automated spreader of claim 1, wherein a flexible wedge is fixedly disposed on a top surface of the hole site padlock.
10. A construction method of an automatic segment beam hanger is characterized by comprising the following steps:
the method comprises the following steps: before hoisting, checking whether a hole site rectangle taking the center of a segment beam hoisting hole as a vertex and a suspender rectangle taking the centers of four segment beam suspenders as the vertices are congruent rectangles, if not, adjusting the longitudinal distance of the segment beam suspenders by increasing and decreasing foundation gaskets between contact surfaces of a longitudinal beam connecting rod and a movable longitudinal beam, and adjusting the transverse distance of the segment beam suspenders by adjusting the overlapped area between a pair of bottom plates and a sliding plate;
step two: hoisting the automatic lifting appliance of the section beam above the section beam by using hoisting equipment, monitoring position information of the movable longitudinal beam, the slider connecting rod and the section beam lifting rod by using a displacement sensor, if all mechanisms are in a set stroke middle position, not actuating each hydraulic cylinder, otherwise actuating each mechanism to return to the set stroke middle position by using the hydraulic cylinders, and ensuring that the gravity center of the automatic lifting appliance of the section beam falls on the rectangular geometric center of the lifting rod;
step three: the automatic lifting appliance for lowering the section beam by the lifting equipment is characterized in that the image collector collects the relative position between the hanger rod rectangle and the hole site rectangle in the horizontal direction at the moment, and drives the rotary cross beam to rotate in the horizontal direction, so that each side of the hanger rod rectangle and each side of the hole site rectangle are kept parallel in the overlooking direction, and the angle deviation is eliminated;
step four: continuously lowering the automatic lifting appliance of the section beam, judging the horizontal distance between the rectangular boom and each side of the hole site rectangle through the pictures collected by the image collector, controlling the corresponding hydraulic cylinder to act to drive the movable longitudinal beam and the longitudinal slide block to act, and eliminating the horizontal distance deviation between each side of the rectangular boom and each side of the hole site rectangle in real time to ensure that the two rectangles are basically overlapped in the overlooking direction;
step five: continuously lowering the automatic lifting appliance of the sectional beam, acquiring distance information between the automatic lifting appliance of the sectional beam and the upper surface of the sectional beam by using a displacement sensor, and lifting the automatic lifting appliance of the sectional beam if the hole site padlock and the lifting hole of the sectional beam are not aligned correctly after the distance between the automatic lifting appliance of the sectional beam and the sectional beam enters a set range, and performing secondary alignment until the hole site padlock at the lower end of the lifting rod of the sectional beam can smoothly enter the lifting hole site of the sectional beam;
step six: monitoring the relative distance between the automatic lifting appliance of the section beam and the section beam by a displacement sensor, stopping lowering the automatic lifting appliance of the section beam after reaching a specified distance range, driving a hydraulic cylinder of a suspender padlock to act, enabling a section beam suspender to rotate 90 degrees relative to the automatic lifting appliance of the section beam, completing the padlock, pressing a positioning plug in a section beam hoisting hole position by a spring pressing device at the moment, and restraining the section beam suspender to move in the horizontal direction in the hole position;
step seven: after the padlock is finished, driving each hydraulic cylinder to act, enabling each mechanism to return to the stroke middle position, ensuring that the gravity center of the section beam lifting appliance and the gravity center of the section beam coincide in the overlooking direction, and finishing the autonomous alignment and padlock processes;
step eight: the crane lifts, after the hoisting section beam reaches the designated position, the boom padlock hydraulic cylinder is driven to act, the section beam boom is rotated to the initial position, the padlock is removed, and then the section beam automatic position lifting appliance is lifted to the next working position;
step nine: and repeating the second step to the eighth step to finish repeated hoisting of the segment beam for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310469.1A CN114084794B (en) | 2021-11-05 | 2021-11-05 | Automatic lifting appliance for segmental beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111310469.1A CN114084794B (en) | 2021-11-05 | 2021-11-05 | Automatic lifting appliance for segmental beam and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114084794A true CN114084794A (en) | 2022-02-25 |
| CN114084794B CN114084794B (en) | 2023-05-26 |
Family
ID=80299109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111310469.1A Active CN114084794B (en) | 2021-11-05 | 2021-11-05 | Automatic lifting appliance for segmental beam and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114084794B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021155A1 (en) * | 2022-07-29 | 2024-02-01 | 中铁十八局集团有限公司 | Cantilever lifting appliance for splicing construction of u-box combined continuous beam |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07187560A (en) * | 1993-12-27 | 1995-07-25 | Murata Mach Ltd | Article gripping device of overhead traveling vehicle |
| CN201236098Y (en) * | 2008-07-07 | 2009-05-13 | 中交第二航务工程局有限公司 | Combined pressure bar sling |
| CN103318748A (en) * | 2012-11-02 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Lifting device of water cargo platform |
| CN104326356A (en) * | 2014-11-10 | 2015-02-04 | 武桥重工集团股份有限公司 | Construction platform hanger with clear stress and adjustable hanging point |
| CN204703068U (en) * | 2015-04-22 | 2015-10-14 | 北京中铁建北方路桥工程有限公司 | A kind of up suspention section assembling traversing carriage bridge fabrication machine |
| CN110407091A (en) * | 2018-04-26 | 2019-11-05 | 新兴重工湖北三六一一机械有限公司 | A kind of suspention running gear of band revolution |
| CN110424271A (en) * | 2019-08-27 | 2019-11-08 | 中铁四局集团第五工程有限公司 | Six-direction positioning and quick adjusting device for realizing prefabricated section beam |
| CN110626933A (en) * | 2019-08-01 | 2019-12-31 | 中铁十六局集团第四工程有限公司 | Segmental beam hanger |
| CN209940310U (en) * | 2018-08-14 | 2020-01-14 | 浙江交工集团股份有限公司 | Lifting sling for segmental beam |
| CN110745684A (en) * | 2019-11-20 | 2020-02-04 | 上海玖行能源科技有限公司 | Four-point box type lifting appliance |
| CN210635593U (en) * | 2019-08-01 | 2020-05-29 | 中铁十六局集团第四工程有限公司 | Segmental beam hanger |
| CN211034871U (en) * | 2019-11-20 | 2020-07-17 | 上海玖行能源科技有限公司 | Four-point box type lifting appliance |
| CN212050210U (en) * | 2020-03-17 | 2020-12-01 | 秦皇岛优益重工科技有限公司 | Single-line single-beam segment assembled bridge girder erection crane |
| WO2021072997A1 (en) * | 2019-10-16 | 2021-04-22 | 山东中衡光电科技有限公司 | Intelligent mining platform for lifting, installation, and dismantling, control system and method |
| CN112850455A (en) * | 2021-02-09 | 2021-05-28 | 中交二公局第二工程有限公司 | Assembled multifunctional aerial rotary lifting appliance and construction method |
| WO2021203303A1 (en) * | 2020-04-08 | 2021-10-14 | 苗林展 | Novel container hoisting apparatus |
-
2021
- 2021-11-05 CN CN202111310469.1A patent/CN114084794B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07187560A (en) * | 1993-12-27 | 1995-07-25 | Murata Mach Ltd | Article gripping device of overhead traveling vehicle |
| CN201236098Y (en) * | 2008-07-07 | 2009-05-13 | 中交第二航务工程局有限公司 | Combined pressure bar sling |
| CN103318748A (en) * | 2012-11-02 | 2013-09-25 | 上海振华重工(集团)股份有限公司 | Lifting device of water cargo platform |
| CN104326356A (en) * | 2014-11-10 | 2015-02-04 | 武桥重工集团股份有限公司 | Construction platform hanger with clear stress and adjustable hanging point |
| CN204703068U (en) * | 2015-04-22 | 2015-10-14 | 北京中铁建北方路桥工程有限公司 | A kind of up suspention section assembling traversing carriage bridge fabrication machine |
| CN110407091A (en) * | 2018-04-26 | 2019-11-05 | 新兴重工湖北三六一一机械有限公司 | A kind of suspention running gear of band revolution |
| CN209940310U (en) * | 2018-08-14 | 2020-01-14 | 浙江交工集团股份有限公司 | Lifting sling for segmental beam |
| CN110626933A (en) * | 2019-08-01 | 2019-12-31 | 中铁十六局集团第四工程有限公司 | Segmental beam hanger |
| CN210635593U (en) * | 2019-08-01 | 2020-05-29 | 中铁十六局集团第四工程有限公司 | Segmental beam hanger |
| CN110424271A (en) * | 2019-08-27 | 2019-11-08 | 中铁四局集团第五工程有限公司 | Six-direction positioning and quick adjusting device for realizing prefabricated section beam |
| WO2021072997A1 (en) * | 2019-10-16 | 2021-04-22 | 山东中衡光电科技有限公司 | Intelligent mining platform for lifting, installation, and dismantling, control system and method |
| CN110745684A (en) * | 2019-11-20 | 2020-02-04 | 上海玖行能源科技有限公司 | Four-point box type lifting appliance |
| CN211034871U (en) * | 2019-11-20 | 2020-07-17 | 上海玖行能源科技有限公司 | Four-point box type lifting appliance |
| CN212050210U (en) * | 2020-03-17 | 2020-12-01 | 秦皇岛优益重工科技有限公司 | Single-line single-beam segment assembled bridge girder erection crane |
| WO2021203303A1 (en) * | 2020-04-08 | 2021-10-14 | 苗林展 | Novel container hoisting apparatus |
| CN112850455A (en) * | 2021-02-09 | 2021-05-28 | 中交二公局第二工程有限公司 | Assembled multifunctional aerial rotary lifting appliance and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024021155A1 (en) * | 2022-07-29 | 2024-02-01 | 中铁十八局集团有限公司 | Cantilever lifting appliance for splicing construction of u-box combined continuous beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114084794B (en) | 2023-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110759244B (en) | Intelligent platform for hoisting, mounting and dismounting in mine, and control system and method | |
| CN111764659B (en) | Intelligent alignment assembly equipment and method for prefabricated components of assembled shear wall | |
| CN111779287B (en) | Conveying and aligning assembly system for large-span truss type assembly type prefabricated parts | |
| CN114084794A (en) | Automatic lifting appliance for segmental beam and construction method of automatic lifting appliance | |
| CN110847938B (en) | Equipment and method for assembling prefabricated upward arch blocks | |
| CN115231427A (en) | Pipe joint hoisting construction method and equipment | |
| CN208200188U (en) | A kind of unmanned overhead traveling crane applied to concrete prefabricated element stockyard | |
| CN111593911B (en) | Factory building for industrially producing large-scale components | |
| CN117569212A (en) | Uplink integrated intelligent bridge fabrication machine and construction method | |
| CN113006145A (en) | Reverse construction method construction process for large-diameter working well movable formwork | |
| CN212101659U (en) | Clamping device for hoisting reinforcement cage | |
| CN114852863A (en) | Bidirectional telescopic clamping type automatic lifting appliance for U-shaped section beams and construction method thereof | |
| CN113008685B (en) | Multipoint loading self-balancing counter force system with adjustable loading position | |
| CN215978533U (en) | Auxiliary positioning device applied to hoisting of prefabricated horizontal component | |
| CN111058617B (en) | Automatic jacking barrel frame template system for concrete structure construction and method thereof | |
| CN210797292U (en) | Six-direction positioning and quick adjusting device for realizing prefabricated section beam | |
| CN113638753A (en) | Supporting construction is used in civil engineering construction | |
| CN210213524U (en) | Full-automatic intelligent warehouse cleaning equipment | |
| CN112761187A (en) | Electric lifting movable mould frame for large-diameter working well | |
| CN102040174A (en) | Integral hoisting device and method for large-scale equipment and member | |
| CN112456348A (en) | Heat absorber hoisting method | |
| CN212893499U (en) | Bucket body lifting appliance | |
| CN217500554U (en) | Steel structure system for integral sliding | |
| CN205170953U (en) | Automatic stifled mechanism of flowing of aluminium smelting pot | |
| CN215187909U (en) | Fine digging control device of grab dredger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |