CN113479784A - Span height-adjustable's gantry crane - Google Patents
Span height-adjustable's gantry crane Download PDFInfo
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- CN113479784A CN113479784A CN202110652872.6A CN202110652872A CN113479784A CN 113479784 A CN113479784 A CN 113479784A CN 202110652872 A CN202110652872 A CN 202110652872A CN 113479784 A CN113479784 A CN 113479784A
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- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000000630 rising effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 4
- 239000002828 fuel tank Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 9
- 230000003028 elevating effect Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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- 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
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
本发明公开了一种跨度高度可调的龙门吊车，包括横移机构、液压升降装置；工字型横梁一端与一个液压升降装置固定连接，工字型横梁另一端与横移机构滑动连接，横移机构再与另一个液压升降装置固定连接，横移机构用于横向移动，液压升降装置用于调整工字型横梁高度。本发明通过设计液压升降装置实现龙门吊车高度调节，解决了传统龙门吊车存在的起吊高度不可调的问题，保证了龙门吊车的高度适用性；进一步地，通过设计横移机构实现龙门吊车单侧横向自由移动，解决了传统龙门吊车存在的跨度不可调的问题，保证了龙门吊车的稳定性及跨度适用性，通过本发明设计的一种跨度高度可调的龙门吊车，根据不同的起吊对象，自由调节高度和跨度，应用范围广泛。
The invention discloses a gantry crane with adjustable span and height, comprising a traverse mechanism and a hydraulic lifting device; one end of an I-shaped beam is fixedly connected with a hydraulic lifting device, and the other end of the I-shaped beam is slidably connected with a traversing mechanism. The moving mechanism is then fixedly connected with another hydraulic lifting device, the traversing mechanism is used for lateral movement, and the hydraulic lifting device is used to adjust the height of the I-shaped beam. The present invention realizes the height adjustment of the gantry crane by designing the hydraulic lifting device, solves the problem of the non-adjustable lifting height of the traditional gantry crane, and ensures the height applicability of the gantry crane; Free movement solves the problem of non-adjustable span existing in traditional gantry cranes, and ensures the stability and span applicability of the gantry crane. A gantry crane with adjustable span height designed by the present invention can be freely adjusted according to different lifting objects. Adjust height and span for a wide range of applications.
Description
Technical Field
The invention relates to a gantry crane with adjustable span height, belonging to the technical field of hoisting.
Background
A large amount of heavy objects are required to be carried every day in places such as machining and manufacturing workshops, storehouses, ports, laboratories and the like, hoisting equipment is required to be matched with the heavy objects to finish hoisting and carrying work, and the application of the gantry crane is popularized in various fields. At present, the conventional gantry crane mostly adopts a fixed frame type structure, the lifting height and the width of a lifting part are limited by the size of the frame per se, the gantry crane is often not adjustable, the size of a lifting object is not uniform, and if the gantry crane with a larger size is adopted, the gantry crane is inconvenient to move, consumes time and labor due to the fact that the gantry crane is heavy per se and is complex to operate; if a portal crane with a smaller size is adopted, the hoisting machine cannot be suitable for hoisting objects with special sizes, and has low hoisting strength and poorer bearing capacity; the conventional common lifting gantry crane is limited to a lifting mode, and is supported by a lifting mechanism completely when a heavy object is lifted and moves, so that the service life of the lifting mechanism is shortened, and the use safety and stability of the gantry crane are also reduced.
Disclosure of Invention
The invention provides a portal crane with adjustable span height, which is used for freely adjusting the span and the height of the portal crane and further provided with a load self-locking mechanism for span adjustment and a self-locking device for releasing hydraulic support.
The technical scheme of the invention is as follows: a gantry crane with adjustable span height comprises an I-shaped beam 1, wherein a hoisting device 42 is arranged on the I-shaped beam 1, and the gantry crane further comprises a transverse moving mechanism 2 and a hydraulic lifting device 5; one end of an I-shaped beam 1 is fixedly connected with a hydraulic lifting device 5, the other end of the I-shaped beam 1 is connected with a transverse moving mechanism 2 in a sliding mode, the transverse moving mechanism 2 is fixedly connected with another hydraulic lifting device 5, the transverse moving mechanism 2 is used for transverse moving, and the hydraulic lifting device 5 is used for adjusting the height of the I-shaped beam 1.
The device also comprises a supporting device 3 and a self-locking device 4; the hydraulic lifting device 5 penetrates through the supporting device 3 and is supported by the supporting device 3 in an auxiliary mode, the self-locking device 4 is fixedly installed on the hydraulic lifting device 5, and the self-locking device 4 is matched with/separated from the supporting device 3 to achieve self-locking/unlocking.
Still include universal wheel mechanism 7, strutting arrangement 3 and the equal fixed mounting in 6 tops of installation base with hydraulic pressure elevating gear 5, 6 bottom fixed mounting universal wheel mechanism 7 of installation base.
The supporting device 3 comprises a vertical supporting frame 23, a plurality of supporting frames 24, a self-locking groove 25 and a movable sliding groove 26; wherein the middle opening of the vertical support frame 23 is used for the hydraulic lifting device 5 to pass through, the periphery of the vertical support frame 23 is fixedly connected with one end of the support frame 24, the other end of the support frame 24 is fixedly connected with the mounting base 6, a pair of sides of the periphery of the vertical support frame 23 are processed with self-locking grooves 25, and the other pair of sides are processed with moving sliding grooves 26.
The self-locking device 4 comprises a locking rod 27, a fixed frame 28 and a fixed threaded hole 29, wherein the locking rod 27 comprises an adjusting nut 30, a screw rod 31 and a locking block 32; wherein the fixed screw hole 29 on a pair of sides of the fixed frame 28 is fixedly connected with the lifting connecting flange 14 to enable the fixed frame 28 to freely move up and down along the vertical direction through the moving chute 26 in the supporting device 3, one end of the screw 31 is provided with the adjusting nut 30, the other end of the screw 31 is provided with the locking block 32, the screw 31 is in clearance fit with the opening on the other pair of sides of the fixed frame 28, and the screw 31 drives the locking block 32 to be matched with or separated from the self-locking groove 25 in the supporting device 3 by pushing the adjusting nut 30.
The universal wheel mechanism 7 comprises a universal wheel bracket 10, a universal wheel brake 11 and a moving wheel 12; wherein universal wheel support 10 fixed mounting is in the 6 downside of installation base, removes wheel 12 and installs on universal wheel support 10 through the pivot, and universal wheel brake 11 passes through the pivot and installs on universal wheel support 10 with the spring.
The other end of the I-shaped cross beam 1 is fixedly connected with an anti-drop baffle 44 to limit the transverse moving mechanism 2.
The transverse moving mechanism 2 comprises a load self-locking mechanism 8 and a transverse moving bracket 9; the load self-locking mechanism 8 is located between the upper flange and the lower flange of the I-shaped beam 1 and is in sliding connection with the I-shaped beam 1, the load self-locking mechanism 8 is fixedly connected with the transverse moving support 9, a gap exists between the bottom of the lower flange of the I-shaped beam 1 and the bottom of the inner side of the transverse moving support 9, the bottom of the outer side of the transverse moving support 9 is fixedly connected with the top of a lifting column 13 in the hydraulic lifting device 5, and the load self-locking mechanism 8 is used for driving transverse movement through a transverse moving wheel 45 and is used for realizing self-locking/unlocking through the cooperation of a rigid plate 49 and an elastic brake plate 50.
The load self-locking mechanism 8 comprises a traversing wheel 45, a U-shaped frame 46, a first fixed rotating shaft 47, a first fixed nut 48, a rigid plate 49, an elastic brake plate 50, a high-strength spring 51, a second fixed nut 52 and a second fixed rotating shaft 53; wherein the first fixed rotating shaft 47 passes through two free ends of the U-shaped frame 46 and the traverse wheel 45 positioned in the middle of the U-shaped frame 46, the U-shaped frame 46 and the first fixed rotating shaft 47 are fixed through a first fixing nut 48, the traverse wheel 45 rotates along the first fixed rotating shaft 47, one end of the first fixed rotating shaft 47 is a free end, the other end of the first fixed rotating shaft 47 moves up and down along a sliding chute on the inner side of the traverse support 9, the bottom of the U-shaped frame 46 is fixedly connected with one end of a second fixed rotating shaft 53 through a rigid plate 49, a high-strength spring 51 is sleeved on the second fixed rotating shaft 53, the other end of the second fixed rotating shaft 53 passes through the elastic brake plate 50 and is fixed in the elastic brake plate 50 through a second fixing nut 52, an extension plate is arranged on one side of the elastic brake plate 50 and is fixedly connected with the traverse support 9, a gap exists between the bottom of the elastic brake plate 50 and the top of the bottom flange of the I-shaped beam 1, the downward movement of the open end of the rigid plate 49 drives the open end to be enlarged to the open end of the elastic brake plate 50 to realize self-locking, upward movement of the open end of the rigid plate 49 drives the open end of the resilient brake pad 50 back into position for unlocking.
The hydraulic lifting device 5 comprises a lifting column 13, a lifting connecting flange 14, a lifting piston rod 15, a lifting device body 16, an oil plug 17, a pressure rod piston rod 18, a pedal pressure rod 19, a pressure rod spring 20, a lifting oil valve 21, a lifting device base 22, a pressure rod oil cylinder 33, a lifting oil cylinder 34, an oil tank 35, a lifting oil discharge oil way 36, a lifting oil suction oil way 37, an oil way gate valve 38, a descending oil suction oil way 39, a descending oil discharge oil way 40, a descending oil way gate valve 41 and a one-way valve 43;
the top of a lifting column 13 positioned at one end of an I-shaped beam 1 is fixedly connected with a lower flange of the I-shaped beam 1, the top of the lifting column 13 positioned at the other end of the I-shaped beam 1 is fixedly connected with the bottom of a transverse moving support 9 in a transverse moving mechanism 2, the bottom of the lifting column 13 is fixedly connected with the top of a lifting piston rod 15 through a lifting connecting flange 14, the bottom of the lifting piston rod 15 is fixed on a lifting device base 22, the periphery of a lifting device main body 16 is provided with an oil plug 17 communicated with an oil tank 35 at the upper part, a lifting oil valve 21 is arranged at the lower part, and the lifting oil valve 21 is used for controlling a lifting oil way gate valve 38 and a descending oil way gate valve 41;
when the lifting oil valve 21 is in a horizontal position, the lifting oil way gate valve 38 is opened, the descending oil way gate valve 41 is closed, the pedal type pressure lever 19 is pressed down, the pressure lever piston rod 18 descends, oil in the pressure lever oil cylinder 33 is extruded, the oil enters the lifting oil cylinder 34 through the one-way valve 43 on the lifting oil discharge way 36, and the lifting piston rod 15 is extruded to ascend; when the pressure lever spring 20 drives the pedal pressure lever 19 to ascend and rebound, the pressure lever piston rod 18 ascends at the moment, the one-way valve 43 on the ascending oil suction oil path 37 sucks oil in the oil tank 35 to enter the pressure lever oil cylinder 33, and the pedal pressure lever 19 is repeatedly pressed down to enable the lifting piston rod 15 to ascend continuously; the one-way valve 43 on the rising oil discharge path 36 takes the direction from the pressure rod cylinder 33 to the lift cylinder 34 as the conducting direction, and the one-way valve 43 on the rising oil suction path 37 takes the direction from the oil tank 35 to the pressure rod cylinder 33 as the conducting direction;
when the lifting oil valve 21 rotates clockwise by 90 degrees and is located at a vertical position, the lifting oil way gate valve 38 is closed, the descending oil way gate valve 41 is opened, the pedal type pressure lever 19 is pressed downwards, the pressure lever piston rod 18 descends to extrude oil in the pressure lever oil cylinder 33, the oil enters the oil tank 35 through the one-way valve 43 on the descending oil discharge oil way 40, the pedal type pressure lever 19 is driven by the pressure lever spring 20 to rebound, the pressure lever piston rod 18 ascends at the moment, the oil in the lifting oil cylinder 34 is sucked into the pressure lever oil cylinder 33 through the one-way valve 43 in the descending oil suction oil way 39, and the lifting piston rod 15 continuously descends by repeatedly pressing the pedal type pressure lever 19 downwards; the one-way valve 43 in the descending oil suction path 39 is conducted in the direction from the lift cylinder 34 to the pressure rod cylinder 33, and the one-way valve 43 in the descending oil discharge path 40 is conducted in the direction from the pressure rod cylinder 33 to the oil tank 35.
The invention has the beneficial effects that: the hydraulic lifting device is designed to realize the height adjustment of the portal crane, so that the problem that the lifting height of the traditional portal crane is not adjustable is solved, the height applicability of the portal crane is ensured, and the lifting capacity can be effectively improved by taking hydraulic pressure as a lifting means; furthermore, the transverse moving mechanism is designed to realize the unilateral transverse free movement of the gantry crane, so that the problem of non-adjustable span of the traditional gantry crane is solved, the stability and the span applicability of the gantry crane are ensured, and the load self-locking mechanism is designed in the transverse moving mechanism, so that the span of the gantry crane is kept unchanged during loading, and the stability, the lifting efficiency and the safety of the gantry crane are improved; furthermore, by designing the self-locking device and matching the self-locking device with the supporting device, the self-locking device is supported by a rigid structure when a heavy object is lifted, the problem that the common lifting gantry crane is supported by a lifting mechanism is solved, and the stability, the bearing capacity and the safety of the gantry crane are further enhanced; therefore, the gantry crane with adjustable span height designed by the invention can freely adjust the height and the span according to different hoisting objects, and has wide application range.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is a schematic structural view of the traversing mechanism of the present invention including an I-beam;
FIG. 4 is a schematic structural view of the load-bearing self-locking mechanism of the present invention;
FIG. 5 is a schematic structural view of a hydraulic lifting device according to the present invention;
FIG. 6 is a hydraulic schematic diagram of the hydraulic lifting device of the present invention;
FIG. 7 is a schematic view of the supporting device of the present invention;
FIG. 8 is a schematic structural view of the self-locking device of the present invention;
FIG. 9 is a schematic view of the self-locking lever of the present invention;
the reference numbers in the figures are: 1-I-shaped beam, 2-transverse moving mechanism, 3-supporting device, 4-self-locking device, 5-hydraulic lifting device, 6-mounting base, 7-universal wheel mechanism, 8-load self-locking mechanism, 9-transverse moving bracket, 10-universal wheel bracket, 11-universal wheel brake, 12-moving wheel, 13-lifting column, 14-lifting connecting flange, 15-lifting piston rod, 16-lifting device body, 17-oil plug, 18-pressure rod piston rod, 19-pedal pressure rod, 20-pressure rod spring, 21-lifting oil valve, 22-lifting device base, 23-vertical supporting frame, 24-supporting frame, 25-self-locking groove, 26-moving chute, 27-locking rod, 28-fixing frame, 29-fixed threaded hole, 30-adjusting nut, 31-screw rod, 32-locking block, 33-compression rod oil cylinder, 34-lifting oil cylinder, 35-oil tank, 36-lifting oil discharge way, 37-lifting oil suction way, 38-lifting oil way gate valve, 39-lifting oil suction way, 40-lifting oil discharge way, 41-lifting oil way gate valve, 42-lifting device, 43-one-way valve, 44-anti-drop baffle, 45-traversing wheel, 46-U-shaped frame, 47-first fixed rotating shaft, 48-first fixed nut, 49-rigid plate, 50-elastic brake plate, 51-high-strength spring, 52-second fixed nut and 53-second fixed rotating shaft.
Detailed Description
Example 1: as shown in fig. 1-9, a gantry crane with adjustable span height comprises an i-shaped beam 1, a hoisting device 42 is slidably mounted on the i-shaped beam 1, the hoisting device 42 can freely move on the i-shaped beam 1 in the horizontal direction, and further comprises a transverse moving mechanism 2 and a hydraulic lifting device 5; one end of an I-shaped cross beam 1 is fixedly connected with one hydraulic lifting device 5 through a bolt, the other end of the I-shaped cross beam 1 is connected with a transverse moving mechanism 2 in a sliding mode, the transverse moving mechanism 2 is fixedly connected with the other hydraulic lifting device 5 through welding, the transverse moving mechanism 2 is used for transverse moving, and the hydraulic lifting device 5 is used for adjusting the height of the I-shaped cross beam 1. The transverse moving mechanism is arranged on one side, the span can be better adjusted through the arrangement, the defect that the adjustment is not easy due to the fact that both sides move is overcome, and meanwhile, the transverse moving mechanism can adapt to lifting of heavy objects with different sizes; and the height adjustment can be convenient for better adapting to the environment.
Further, the device can also comprise a supporting device 3 and a self-locking device 4; the hydraulic lifting device 5 penetrates through the supporting device 3 and is supported by the supporting device 3 in an auxiliary mode, the self-locking device 4 is fixedly installed on the hydraulic lifting device 5 through bolts, and the self-locking device 4 is matched with/separated from the supporting device 3 to achieve self-locking/unlocking. Through the device, can realize the rigidity and support to make and support more reliable, promote hydraulic pressure elevating gear life simultaneously.
Further, can set up still to include universal wheel mechanism 7, strutting arrangement 3 and hydraulic pressure elevating gear 5 all through bolt fixed mounting in 6 tops of installation base, and two universal wheel mechanisms 7 of bolt fixed mounting are passed through to 6 bottoms of installation base.
Further, the supporting device 3 may be provided with a vertical supporting frame 23, a plurality of supporting frames 24, a self-locking slot 25, and a moving sliding slot 26; wherein the middle trompil of vertical support frame 23 is used for hydraulic pressure elevating gear 5 to pass, and the periphery of vertical support frame 23 passes through welded fastening with support frame 24 one end and is connected, and the support frame 24 other end passes through the bolt fastening with installation base 6, and a pair of side processing of vertical support frame 23 periphery has self-locking groove 25, and another offside processing has removal spout 26.
Further, the self-locking device 4 can be provided to include a locking rod 27, a fixing frame 28 and a fixing threaded hole 29, wherein the locking rod 27 includes an adjusting nut 30, a screw 31 and a locking block 32; wherein four fixed screw holes 29 on a pair of sides of the fixing frame 28 are fixedly connected with the lifting connecting flange 14 through bolts, so that the fixing frame 28 can freely move up and down along the vertical direction through the moving chute 26 in the supporting device 3, one end of the screw rod 31 is provided with an integrated adjusting nut 30, the other end of the screw rod 31 is provided with an integrated locking block 32, the screw rod 31 is in clearance fit with the opening hole on the other pair of sides of the fixing frame 28, and the screw rod 31 drives the locking block 32 to be matched with or separated from the self-locking groove 25 in the supporting device 3 by pushing the adjusting nut 30. Namely, the size of the locking block 32 is matched with the size of the self-locking groove 25 on the supporting device 3, and the locking block 32 can be matched with or separated from the self-locking groove 25 by driving the screw 31 through the adjusting nut 30, so as to achieve the purpose of locking the height of the lifting column 13.
Further, the universal wheel mechanism 7 can be set to include a universal wheel bracket 10, a universal wheel brake 11 and a moving wheel 12; wherein universal wheel support 10 passes through bolt fixed mounting at the 6 downside of installation base, removes wheel 12 and installs on universal wheel support 10 through the pivot, and universal wheel brake 11 passes through pivot and spring mounting on universal wheel support 10.
Further, the other end of the i-shaped beam 1 can be fixedly connected with the anti-falling baffle 44 through a bolt to limit the transverse moving mechanism 2 and prevent the transverse moving mechanism from falling off in a sliding manner.
Further, the transverse moving mechanism 2 can be arranged to comprise a load self-locking mechanism 8 and a transverse moving bracket 9; the load self-locking mechanism 8 is located between an upper flange and a lower flange of the I-shaped beam 1 and is in sliding connection with the I-shaped beam 1, the load self-locking mechanism 8 can freely move on the I-shaped beam 1 in the horizontal direction, the load self-locking mechanism 8 is fixedly connected with the transverse support 9 in a welding mode, a gap exists between the bottom of the lower flange of the I-shaped beam 1 and the bottom of the inner side of the transverse support 9, the bottom of the outer side of the transverse support 9 is fixedly connected with the top of a lifting column 13 in the hydraulic lifting device 5 in a welding mode, the load self-locking mechanism 8 is used for driving transverse movement through a transverse moving wheel 45, and self-locking/unlocking is achieved through cooperation of a rigid sheet 49 and an elastic brake sheet 50. The self-locking setting can be realized without human, so that the construction is safer and more convenient.
Further, the load self-locking mechanism 8 may be configured to include a traverse wheel 45, a U-shaped frame 46, a first fixed rotating shaft 47, a first fixed nut 48, a rigid plate 49, an elastic brake plate 50, a high-strength spring 51, a second fixed nut 52, and a second fixed rotating shaft 53; wherein the first fixed rotating shaft 47 passes through two free ends of the U-shaped frame 46 and the traverse wheel 45 positioned in the middle of the U-shaped frame 46 and fixes the U-shaped frame 46 and the first fixed rotating shaft 47 through a first fixing nut 48, the traverse wheel 45 rotates along the first fixed rotating shaft 47, one end of the first fixed rotating shaft 47 is a free end, the other end of the first fixed rotating shaft 47 moves up and down along a sliding chute inside the traverse bracket 9, the bottom of the U-shaped frame 46 is fixedly connected with one end of a second fixed rotating shaft 53 through a rigid plate 49 (as shown in the figure, the pressed upper part of the rigid plate 49 is fixedly connected with the bottom of the U-shaped frame 46 through welding, the pressed lower part of the rigid plate 49 is fixedly connected with one end of the second fixed rotating shaft 53 through welding), the second fixed rotating shaft 53 is sleeved with a high-strength spring 51, the other end of the second fixed rotating shaft 53 passes through the elastic brake pad 50 and is fixed in the elastic brake pad 50 through a second fixing nut 52, the up-and-down movement of the rigid plate 49 is limited through the second fixing nut 52, one side of the elastic brake block 50 is provided with an extension plate which is fixedly connected with the transverse moving support 9 in a welding manner, a gap exists between the bottom of the elastic brake block 50 and the top of the bottom flange of the I-shaped cross beam 1, the downward movement of the opening end of the rigid plate 49 drives the opening end of the elastic brake block 50 to be enlarged to realize self locking, and the upward movement of the opening end of the rigid plate 49 drives the opening end of the elastic brake block 50 to return to realize unlocking.
When the I-shaped beam 1 bears a load, the load on the transverse moving wheel 45 in the load self-locking mechanism 8 exceeds the common self-weight of the I-shaped beam 1 and the lifting device 42, namely, the overload occurs, because the elasticity of the high-strength spring 51 is smaller than the load, the high-strength spring 51 is compressed, the rigid plate 49 moves downwards along with the high-strength spring, the upper opening angle of the elastic brake pad 50 is enlarged due to the downward pressing of the rigid plate 49, the two sides above the elastic brake pad 50 can extrude the inner walls of the I-shaped beam 1 and the transverse moving support 9, and the purpose of self-locking brake is achieved through friction force; when the transverse moving wheel 45 only bears the common deadweight of the I-shaped cross beam 1 and the lifting device 42, namely normal load, the compression elasticity of the high-strength spring 51 is larger than the load to cause the spring to rebound, the rigid plate 49 moves upwards along with the spring, the elastic brake plate 50 causes the upper opening angle to rebound because of no stress, the I-shaped cross beam 1 and the inner wall of the transverse moving support 9 are not subjected to the action of friction force, and at the moment, the transverse moving mechanism can freely move in the horizontal direction.
Further, the hydraulic lifting device 5 may be provided with a lifting column 13, a lifting connecting flange 14, a lifting piston rod 15, a lifting device body 16, an oil plug 17, a pressure rod piston rod 18, a pedal pressure rod 19, a pressure rod spring 20, a lifting oil valve 21, a lifting device base 22, a pressure rod oil cylinder 33, a lifting oil cylinder 34, an oil tank 35, a rising oil discharge oil path 36, a rising oil suction oil path 37, an oil path gate valve 38, a falling oil suction oil path 39, a falling oil discharge oil path 40, a falling oil path gate valve 41, and a one-way valve 43; the top of a lifting column 13 positioned at one end of an I-shaped beam 1 is fixedly connected with the lower flange of the I-shaped beam 1 through a bolt, the top of the lifting column 13 positioned at the other end of the I-shaped beam 1 is fixedly connected with the bottom of a transverse moving support 9 in a transverse moving mechanism 2 through welding, the bottom of the lifting column 13 is fixedly connected with the top of a lifting piston rod 15 through welding through a lifting connecting flange 14 (namely, the lifting column 13 and the lifting piston rod 15 are respectively fixedly connected with the lifting connecting flange 14 through welding), the bottom of the lifting piston rod 15 is fixed on a lifting device base 22, the periphery of a lifting device main body 16 is provided with an oil plug 17 communicated with an oil tank 35 at the upper part, and is provided with a lifting oil valve 21 at the lower part, and the lifting oil valve 21 is used for controlling a lifting oil way gate valve 38 and a lowering oil way gate valve 41; when the lifting oil valve 21 is in a horizontal position, the lifting oil way gate valve 38 is opened, the descending oil way gate valve 41 is closed, the pedal type pressure lever 19 is pressed down, the pressure lever piston rod 18 descends, oil in the pressure lever oil cylinder 33 is extruded, the oil enters the lifting oil cylinder 34 through the one-way valve 43 on the lifting oil discharge way 36, and the lifting piston rod 15 is extruded to ascend; when the pressure lever spring 20 drives the pedal pressure lever 19 to ascend and rebound, the pressure lever piston rod 18 ascends at the moment, the one-way valve 43 on the ascending oil suction oil path 37 sucks oil in the oil tank 35 to enter the pressure lever oil cylinder 33, and the pedal pressure lever 19 is repeatedly pressed down to enable the lifting piston rod 15 to ascend continuously; the one-way valve 43 on the rising oil discharge path 36 takes the direction from the pressure rod cylinder 33 to the lift cylinder 34 as the conducting direction, and the one-way valve 43 on the rising oil suction path 37 takes the direction from the oil tank 35 to the pressure rod cylinder 33 as the conducting direction; when the lifting oil valve 21 rotates clockwise by 90 degrees and is located at a vertical position, the lifting oil way gate valve 38 is closed, the descending oil way gate valve 41 is opened, the pedal type pressure lever 19 is pressed downwards, the pressure lever piston rod 18 descends to extrude oil in the pressure lever oil cylinder 33, the oil enters the oil tank 35 through the one-way valve 43 on the descending oil discharge oil way 40, the pedal type pressure lever 19 is driven by the pressure lever spring 20 to rebound, the pressure lever piston rod 18 ascends at the moment, the oil in the lifting oil cylinder 34 is sucked into the pressure lever oil cylinder 33 through the one-way valve 43 in the descending oil suction oil way 39, and the lifting piston rod 15 continuously descends by repeatedly pressing the pedal type pressure lever 19 downwards; the one-way valve 43 in the descending oil suction path 39 is conducted in the direction from the lift cylinder 34 to the pressure rod cylinder 33, and the one-way valve 43 in the descending oil discharge path 40 is conducted in the direction from the pressure rod cylinder 33 to the oil tank 35. Furthermore, because one of the hydraulic lifting devices 5 on both sides is arranged below the transverse moving mechanism 2, the initial consistency can be achieved by arranging the lifting columns 13 with different thicknesses; or by directly adjusting the hydraulic lifting device 5.
When the gantry crane works, an operator firstly moves the gantry crane to a working position, presses down a right universal wheel brake (namely, the side without the transverse moving mechanism 2) in the figure 1 and fixes a right mechanism; determining the required hoisting width according to the size specification of the hoisting part, and moving the left mechanism to reach the appropriate hoisting width; the left universal wheel brake 11 is pressed down to fix the left structure; determining the required hoisting height according to the size specification of the hoisting part, and regulating the height of the lifting piston rod 15 by repeatedly pressing the pedal type pressure lever 19, so as to regulate the gantry crane to reach the proper hoisting height; the height of the lifting column is limited by the self-locking device 4, and the hydraulic lifting device 5 can release pressure to protect the structure; and finally, hoisting is realized through the hoisting device. The hydraulic lifting device 5 is arranged, so that the height of the I-shaped beam 1 can be effectively controlled, and the lifting capacity can be effectively improved while the height adjusting function is ensured; the transverse moving mechanism 2 is arranged and can be used for adjusting the span of the portal crane, and the load self-locking mechanism 8 is arranged in the transverse moving mechanism 2, so that the stability and the safety of the portal crane can be effectively improved while the span adjusting function is ensured; set up self-lock device 4 and strutting arrangement 3 and mutually support, can avoid hydraulic pressure elevating gear 5 to support and lift by crane the object, can effectual extension product life, improve bearing capacity and security.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
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| CN114701975A (en) * | 2022-05-07 | 2022-07-05 | 株洲时代电子技术有限公司 | Gantry crane rotary fixing device |
| CN114808567A (en) * | 2022-03-31 | 2022-07-29 | 株洲时代电子技术有限公司 | Railway line component replacement gantry crane device and operation method thereof |
| CN114873513A (en) * | 2022-05-07 | 2022-08-09 | 株洲时代电子技术有限公司 | Gantry crane rotation fixing operation method |
| CN115340018A (en) * | 2022-09-22 | 2022-11-15 | 中铁建(无锡)工程科技发展有限公司 | Wheeled mobile tool platform |
| CN115523383A (en) * | 2022-10-21 | 2022-12-27 | 重庆市筑云科技有限责任公司 | A construction site risk monitoring device and system |
| CN116290805A (en) * | 2022-04-22 | 2023-06-23 | 中建二局第二建筑工程有限公司 | A hoisting method for high-rise building construction |
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|---|---|
| CN113479784B (en) | 2022-10-25 |
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Application publication date: 20211008 Assignee: Yunnan Gufeng Industrial Co.,Ltd. Assignor: Kunming University of Science and Technology Contract record no.: X2024980014036 Denomination of invention: A gantry crane with adjustable span and height Granted publication date: 20221025 License type: Open License Record date: 20240909 |
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