CN113479784B - Span height-adjustable's gantry crane - Google Patents
Span height-adjustable's gantry crane Download PDFInfo
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- CN113479784B CN113479784B CN202110652872.6A CN202110652872A CN113479784B CN 113479784 B CN113479784 B CN 113479784B CN 202110652872 A CN202110652872 A CN 202110652872A CN 113479784 B CN113479784 B CN 113479784B
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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
The invention discloses a portal crane with adjustable span height, which comprises a transverse moving mechanism and a hydraulic lifting device, wherein the transverse moving mechanism is arranged on the portal crane; one end of the I-shaped cross beam is fixedly connected with one hydraulic lifting device, the other end of the I-shaped cross beam is connected with the transverse moving mechanism in a sliding mode, the transverse moving mechanism is fixedly connected with the other hydraulic lifting device, the transverse moving mechanism is used for transversely moving, and the hydraulic lifting device is used for adjusting the height of the I-shaped cross beam. 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, and the height applicability of the portal crane is ensured; furthermore, the transverse moving mechanism is designed to realize the unilateral transverse free movement of the gantry crane, the problem that the span of the traditional gantry crane is nonadjustable is solved, the stability and the span applicability of the gantry crane are ensured, and 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.
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 gantry crane 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 and height, which is used for freely adjusting the span and height of the portal crane, and further is 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 also 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 slidably connected with a transverse moving mechanism 2, the transverse moving mechanism 2 is fixedly connected with another hydraulic lifting device 5, the transverse moving mechanism 2 is used for transverse movement, 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 fixing frame 28 and a fixing 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 pivot and spring mounting on universal wheel support 10.
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 block 50, a high-strength spring 51, a second fixed nut 52 and a second fixed rotating shaft 53; the first fixed rotating shaft 47 penetrates through two free ends of the U-shaped frame 46 and the transverse moving 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 transverse moving 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 groove in the inner side of the transverse moving support 9, the bottom of the U-shaped frame 46 is fixedly connected with one end of the 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 penetrates 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 transverse moving 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 cross beam 1, downward movement of the open end of the rigid plate 49 drives the open end of the elastic brake plate 50 to increase the open end to realize self-locking, and upward movement of the opening of the rigid plate 49 drives the elastic brake plate 50 to realize unlocking.
The hydraulic lifting device 5 comprises a lifting column 13, a lifting connecting flange 14, a lifting piston rod 15, a lifting device main 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 the 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 of which the upper part is communicated with an oil tank 35, the lower part is provided with a lifting oil valve 21, 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 discharging oil path 36 takes the direction from the pressure rod oil cylinder 33 to the lifting oil cylinder 34 as a conducting direction, and the one-way valve 43 on the rising oil sucking oil path 37 takes the direction from the oil tank 35 to the pressure rod oil cylinder 33 as a 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 beneficial effects of the invention are: the invention realizes the height adjustment of the portal crane by designing the hydraulic lifting device, solves the problem of nonadjustable lifting height of the traditional portal crane, ensures the high applicability of the portal crane, and can effectively improve the lifting capability 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 structure of the present invention;
FIG. 3 is a schematic view of the structure of the traversing mechanism of the present invention comprising an I-beam;
FIG. 4 is a schematic view of the structure of the load-bearing self-locking mechanism of the present invention;
FIG. 5 is a schematic view of the hydraulic lift apparatus of 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 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 cross beam, 2-traversing 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-traversing 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 support frame, 24-support frame, 25-self-locking groove, 26-moving chute, 27-locking rod, 28-fixing frame, 29-fixing threaded hole, 30-adjusting nut, 31-screw rod, 32-locking block, 33-pressure rod oil cylinder, 34-lifting oil cylinder, 35-oil tank, 36-lifting oil discharge oil passage, 37-lifting oil passage, 38-lifting oil passage, 39-lowering oil discharge passage, 40-lowering oil discharge passage, 41-lifting oil discharge passage, 42-lifting oil cylinder, 35-lifting oil discharge passage, 45-fixing nut, 45-lifting oil discharge passage, 45-fixing nut, 45-elastic fixing plate, 48-lifting oil discharge passage, second lifting plate, 52-elastic plate, 50-fixing plate, 50-elastic plate, 50-lifting oil discharge plate, 52-lifting connecting plate, 25-elastic plate, 25-lifting connecting plate, 50-lifting connecting plate, 25-lifting connecting plate, 50-elastic plate, 25-lifting connecting plate, and second lifting connecting plate, and the like components.
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 beam 1 is fixedly connected with one hydraulic lifting device 5 through a bolt, 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 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 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 adjustment of the height can be convenient for better adapting to the environment.
Furthermore, 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 to include a vertical supporting frame 23, a plurality of supporting frames 24, a self-locking slot 25, and a moving sliding slot 26; wherein trompil is used for hydraulic pressure elevating gear 5 to pass in the middle of the vertical support frame 23, and the periphery of the vertical support frame 23 is connected with one end of the support frame 24 through welding fixed, and the other end of the support frame 24 is fixed with the installation base 6 through bolts, and a pair of sides processing of the periphery of the vertical support frame 23 has a self-locking groove 25, and another pair of sides processing has a movable sliding groove 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, where the locking rod 27 includes an adjusting nut 30, a screw 31 and a locking block 32; wherein, four fixing 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 an opening hole on the other side 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 and 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 moving 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 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 in a welding mode, and the load self-locking mechanism 8 is used for driving transverse movement through the transverse moving wheel 45 and is used for achieving self-locking/unlocking through cooperation of the rigid sheet 49 and the 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 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, the U-shaped frame 46 and the first fixed rotating shaft 47 are fixed by 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 chute on the inner side of the traverse bracket 9, the bottom of the U-shaped frame 46 is fixedly connected with one end of the second fixed rotating shaft 53 through a rigid sheet 49 (as shown in the figure, the upper pressed part of the rigid sheet 49 is fixedly connected with the bottom of the U-shaped frame 46 through welding, the lower pressed part of the rigid sheet 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 penetrates through the elastic brake block 50 and is fixed in the elastic brake block 50 through a second fixing nut 52, the up-and-down movement of the rigid block 49 is limited through the second fixing nut 52, an extension plate is arranged on one side of the elastic brake block 50 and is fixedly connected with the transverse moving support 9 through welding, 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 block 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 block 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, 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 sheet 49 moves downwards, the upper opening angle of the elastic brake pad 50 is expanded due to the downward pressing of the rigid sheet 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 braking 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 to include a lifting column 13, a lifting connection flange 14, a lifting piston rod 15, a lifting device body 16, an oil plug 17, a pressing rod piston rod 18, a pedal pressing rod 19, a pressing rod spring 20, a lifting oil valve 21, a lifting device base 22, a pressing rod oil cylinder 33, a lifting oil cylinder 34, an oil tank 35, a lifting oil discharge oil path 36, a lifting oil suction oil path 37, an oil path gate valve 38, a descending oil suction oil path 39, a descending oil discharge oil path 40, a descending 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 to be in a vertical position, the lifting oil way gate valve 38 is closed, the descending oil way gate valve 41 is opened, the foot-operated press rod 19 is pressed downwards, the press rod piston rod 18 descends to extrude oil in the press rod 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 foot-operated press rod 19 is driven by the press rod spring 20 to rebound, the press rod piston rod 18 ascends at the moment, the oil in the lifting oil cylinder 34 is sucked into the press rod oil cylinder 33 through the one-way valve 43 of the descending oil suction oil way 39, and the lifting piston rod 15 continuously descends by repeatedly pressing the foot-operated press rod 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, as 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 lifting width according to the size specification of the lifting part, and moving the left mechanism to reach the proper lifting width; the left universal wheel brake 11 is pressed down, and the left structure is fixed; 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, thereby regulating the gantry crane to reach the proper hoisting height; the height of the lifting column is limited through the self-locking device 4, and the hydraulic lifting device 5 can release pressure to protect the structure; and finally, hoisting is realized through a hoisting device. The hydraulic lifting device 5 is arranged, so that the height of the I-shaped cross 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, 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 (9)
1. The utility model provides a span height-adjustable's gantry crane, includes I shape crossbeam (1), installs hoisting accessory (42) on I shape crossbeam (1), its characterized in that: the device also comprises a transverse moving mechanism (2) and a hydraulic lifting device (5); one end of the I-shaped beam (1) is fixedly connected with a hydraulic lifting device (5), the other end of the I-shaped beam (1) is in sliding connection with a transverse moving mechanism (2), the transverse moving mechanism (2) is fixedly connected with the other 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 transverse moving mechanism (2) comprises a load self-locking mechanism (8) and a transverse moving bracket (9); wherein heavy burden self-locking mechanism (8) are located between the upper and lower flanges of I-shaped crossbeam (1) and are in sliding connection with I-shaped crossbeam (1), heavy burden self-locking mechanism (8) and sideslip support (9) fixed connection, there is a clearance bottom I-shaped crossbeam (1) lower flange and sideslip support (9) inboard bottom, sideslip support (9) outside bottom and hydraulic lifting device (5) in lift post (13) top fixed connection, heavy burden self-locking mechanism (8) are used for driving lateral shifting through sideslip wheel (45), be used for through rigidity piece (49), elasticity brake block (50) cooperation realization auto-lock/unblock.
2. The span height adjustable portal crane of claim 1, wherein: 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.
3. The span height adjustable portal crane of claim 2, wherein: the hydraulic lifting device is characterized by further comprising a universal wheel mechanism (7), wherein the supporting device (3) and the hydraulic lifting device (5) are fixedly installed at the top of the installation base (6), and the universal wheel mechanism (7) is fixedly installed at the bottom of the installation base (6).
4. The span height adjustable portal crane of claim 2, wherein: 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 trompil is used for hydraulic pressure elevating gear (5) to pass in the middle of vertical support frame (23), vertical support frame (23) periphery and support frame (24) one end fixed connection, support frame (24) other end and installation base (6) fixed connection, vertical support frame (23) periphery a pair of side processing have from locked groove (25), another offside processing has removal spout (26).
5. The span height adjustable gantry crane of claim 2, wherein: the self-locking device (4) comprises a locking rod (27), a fixing frame (28) and a fixing threaded hole (29), wherein the locking rod (27) comprises an adjusting nut (30), a screw rod (31) and a locking block (32); wherein fixed screw hole (29) on a pair of side of mount (28) and lift flange (14) fixed connection make mount (28) can pass through the removal spout (26) in strutting arrangement (3) and freely move from top to bottom along vertical direction, screw rod (31) one end sets up adjusting nut (30), the screw rod (31) other end sets up locking block (32), screw rod (31) and mount (28) another offside trompil clearance fit, make screw rod (31) drive locking block (32) and strutting arrangement (3) in from locked groove (25) cooperation or separation through promoting adjusting nut (30).
6. The span height adjustable gantry crane of claim 3, wherein: 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 installation base (6) downside, removes wheel (12) and installs on universal wheel support (10) through the pivot, and universal wheel brake (11) are installed on universal wheel support (10) through pivot and spring.
7. The span height adjustable gantry crane of claim 1, wherein: the end part of 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).
8. The span height adjustable gantry crane of claim 1, wherein: the load self-locking mechanism (8) comprises a transverse moving 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 block (50), a high-strength spring (51), a second fixed nut (52) and a second fixed rotating shaft (53); the transverse moving mechanism comprises a first fixed rotating shaft (47), a transverse moving wheel (45) located between two free ends of a U-shaped frame (46) and the U-shaped frame (46) and fixed through a first fixing nut (48), the transverse moving 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 groove in the inner side of a transverse moving 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 sheet (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) penetrates through an elastic brake sheet (50) and is fixed in the elastic brake sheet (50) through a second fixing nut (52), an extension plate is arranged on one side of the elastic brake sheet (50) and fixedly connected with the transverse moving support (9), the bottom of the elastic brake sheet (50) is fixedly connected with a movable cross beam (1) below the I-shaped frame, a gap exists between the top of the elastic brake sheet (50), and the opening end of the elastic brake sheet (49), and the opening end of the elastic brake sheet (50) is unlocked, and the opening of the elastic movable cross beam (50) is opened upwards, and the elastic movable cross beam (50) and the elastic cross beam (50) is unlocked.
9. The span height adjustable gantry crane according to any one of claims 1 to 7, wherein: the hydraulic lifting device (5) comprises a lifting column (13), a lifting connecting flange (14), a lifting piston rod (15), a lifting device main 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 middle part (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 the 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) with an upper part communicated with an oil tank (35), the lower part is provided with a lifting oil valve (21), 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 to extrude oil in the pressure lever oil cylinder (33), the oil enters the lifting oil cylinder (34) through the one-way valve (43) on the lifting oil discharging oil 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, oil in the oil tank (35) is sucked into the pressure lever oil cylinder (33) through the one-way valve (43) on the ascending oil suction oil way (37), and the ascending piston rod (15) continuously ascends by repeatedly pressing the pedal pressure lever (19); the one-way valve (43) on the ascending oil discharging oil path (36) takes the direction from the pressure rod oil cylinder (33) to the lifting oil cylinder (34) as a conducting direction, and the one-way valve (43) on the ascending oil sucking oil path (37) takes the direction from the oil tank (35) to the pressure rod oil cylinder (33) as a conducting direction;
when the lifting oil valve (21) rotates clockwise by 90 degrees and is located at a vertical position, the lifting oil line gate valve (38) is closed, the descending oil line gate valve (41) is opened, the pedal type pressure lever (19) is pressed down, 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 line (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 line (39), and the lifting piston rod (15) is continuously descended through repeatedly pressing the pedal type pressure lever (19); the one-way valve (43) on the descending oil suction oil path (39) takes the direction from the lifting oil cylinder (34) to the pressure rod oil cylinder (33) as a conducting direction, and the one-way valve (43) on the descending oil discharge oil path (40) takes the direction from the pressure rod oil cylinder (33) to the oil tank (35) as a conducting direction.
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| CN202110652872.6A CN113479784B (en) | 2021-06-11 | 2021-06-11 | Span height-adjustable's gantry crane |
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| 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 |
| CN114873513B (en) * | 2022-05-07 | 2024-06-14 | 株洲时代电子技术有限公司 | Gantry crane rotation fixing operation method |
| CN115523383B (en) * | 2022-10-21 | 2023-05-12 | 重庆市筑云科技有限责任公司 | Building site risk monitoring device and system |
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| FR2420502A1 (en) * | 1978-03-23 | 1979-10-19 | Alsthom Cgee | Mobile gantry crane - has adjustable span and height to allow use on tracks of varying width |
| EP1746063A1 (en) * | 2005-07-18 | 2007-01-24 | Manfred M. Eberhard | Coil lifting device |
| CN103613034B (en) * | 2013-10-20 | 2015-11-18 | 国家电网公司 | Can direction movement be capable hangs |
| CN105236276A (en) * | 2015-10-20 | 2016-01-13 | 常州工学院 | Foldable gantry crane capable of ascending and descending |
| CN105417392A (en) * | 2015-11-27 | 2016-03-23 | 河南新科起重机股份有限公司 | Height-change and span-change device for tire type crane |
| CN206384737U (en) * | 2016-12-29 | 2017-08-08 | 江阴市凯力起重电机有限公司 | High stability combined type underhung crane |
| CN108358051A (en) * | 2018-01-25 | 2018-08-03 | 庄明忠 | One kind can become straddle type gantry automatically |
| CN209274653U (en) * | 2018-12-06 | 2019-08-20 | 国网陕西省电力公司宝鸡供电公司 | A kind of detachable hydraulic switchgear carrier |
| CN211496661U (en) * | 2019-10-22 | 2020-09-15 | 常州伟泰科技股份有限公司 | Upright post lifting type movable gantry crane |
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