CN216638695U

CN216638695U - Gantry crane with prevent structure of toppling

Info

Publication number: CN216638695U
Application number: CN202220964968.6U
Authority: CN
Inventors: 张建鑫; 张志伟; 张立胜
Original assignee: Henan Lugang Crane Group Co ltd
Current assignee: Henan Lugang Crane Group Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-05-31
Anticipated expiration: 2032-04-25

Abstract

The utility model relates to a gantry crane with an anti-overturning structure, which comprises an upper end beam, a main beam, a trolley, supporting legs, lower end beams, walking wheels and a trolley walking mechanism, wherein a trolley walking track is paved on the ground, mounting plates are fixed on the front side and the rear side of the middle of each lower end beam, supporting tables which are arranged in one-to-one correspondence to the mounting plates are respectively fixed on the front side and the rear side of the bottom of the trolley walking track, the bottom of each supporting table is fixed with the ground, an L-shaped supporting plate is fixed on the top of each supporting table, the bottom end of the vertical part of each L-shaped supporting plate is fixed on the top of each supporting table, the horizontal part of each L-shaped supporting plate is positioned above each supporting table, one end of each mounting plate, which is far away from the lower end beam, is arranged at an interval with the vertical part of each L-shaped supporting plate, and an anchoring mechanism for detachably connecting the mounting plates with the L-shaped supporting plates is arranged between the L-shaped supporting plates. The connection between the lower end beam and the supporting platform is realized through the anchoring mechanism, the crane is prevented from sliding on a cart walking track in windy weather, and the overturning phenomenon is avoided.

Description

Gantry crane with prevent structure of toppling

Technical Field

The utility model belongs to the technical field of hoisting equipment, and particularly relates to a gantry crane with an anti-overturning structure.

Background

The crane is a special device which is widely applied in modern industry, building industry and logistics transportation industry. A gantry crane is a type of crane, also called a gantry crane, and is mainly used for loading and unloading works of outdoor stock, cargo yard, bulk cargo, and the like. The reliability and safety of the gantry crane in application determine the probability of the gantry crane to malfunction in specific application. When the portal crane is applied outdoors, if the portal crane encounters strong wind weather, once the wind direction is consistent with the direction of the crane cart travelling track, the portal crane slides along the cart travelling track in a non-working state, the phenomenon of overturning of the portal crane can be caused seriously, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a gantry crane with an overturn-preventing structure, which is used for solving the technical problems that the gantry crane in the prior art is easy to slide and even overturn when encountering strong wind weather, and has great potential safety hazards.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the gantry crane with the anti-overturning structure comprises two upper end beams which are arranged in parallel, a main beam is fixedly connected between the two upper end beams, a crane trolley is arranged on the main beam, two ends of the bottom of each upper end beam are respectively fixed with a vertically arranged supporting leg, a lower end beam which is parallel to the upper end beams is arranged between the bottoms of the two supporting legs, a cart walking track is paved on the ground, two ends inside each lower end beam are respectively provided with a walking wheel, the walking wheels are matched with the cart walking track in a rolling way, each lower end beam is respectively provided with a cart walking mechanism for driving the walking wheels to move along the cart walking track, the direction of the cart walking track is the left-right direction, the running direction of the crane trolley is the front-back direction, the front side and the back side of the middle position of each lower end beam are respectively fixed with a horizontally arranged mounting plate, and supporting tables which are arranged in one-to-one correspondence with the mounting plates are respectively fixed on the front side and the back side of the bottom of the cart walking track, the bottom of the supporting table is fixed with the ground, an L-shaped supporting plate which is vertically arranged is fixed at the top of the supporting table, the bottom end of the vertical part of the L-shaped supporting plate is fixed at the top of the supporting table, the horizontal part of the L-shaped supporting plate is positioned above the supporting table, one end of the mounting plate, which is far away from the lower end beam, is arranged at an interval with the vertical part of the L-shaped supporting plate, and an anchoring mechanism for detachably connecting the mounting plate with the L-shaped supporting plate is arranged between the L-shaped supporting plate and the mounting plate; anchoring mechanism includes the first threaded rod of vertical setting, sliding connection is on the horizontal part of L type backup pad with first threaded rod liftable, be provided with the drive assembly who is used for driving first threaded rod and goes up and down in the L type backup pad, set up the mounting hole that is used for supplying first threaded rod to pass through on the mounting panel, a supporting bench top is fixed with the installation piece that corresponds the setting with first threaded rod, the inside mounting groove that sets up of opening up of installation piece, the bottom of first threaded rod is run through the mounting hole and is pegged graft inside the mounting groove, set up the first screw hole that a plurality of intervals set up on the horizontal part of L type backup pad, set up the second screw hole that sets up with first screw hole one-to-one on the mounting panel, through running through first screw hole in proper order between the horizontal part of L type backup pad and the mounting panel, the bolt detachable connection of second screw hole.

Preferably, a positioning mechanism for positioning the mounting plate is arranged between one end of the mounting plate, which is far away from the lower end beam, and the vertical part of the L-shaped support plate; the positioning mechanism comprises a positioning block detachably connected with the mounting plate, a first connecting plate vertically arranged with the positioning block is fixed at one end of the positioning block, a second connecting plate vertically arranged with the mounting plate is fixed at one end of the mounting plate away from the lower end beam, a plurality of first positioning holes are arranged on the first connecting plate at uniform intervals, a plurality of second positioning holes corresponding to the first positioning holes one by one are arranged on the second connecting plate, the positioning block passes through the first positioning holes in sequence, the fixing pin of the second positioning hole is detachably connected with the mounting plate, a positioning groove with an opening arranged towards the positioning block is formed in the vertical part of the L-shaped supporting plate, the positioning groove extends along the front-back direction of the vertical part of the L-shaped supporting plate, one end of the positioning groove extends to the rear end of the vertical part of the L-shaped supporting plate, the other end of the positioning groove extends to the middle of the vertical part of the L-shaped supporting plate, and one end, away from the mounting plate, of the positioning block is connected inside the positioning groove in a sliding mode; when the front side of the positioning block is attached to the inner wall of the front end of the positioning groove, the central axis of the first threaded rod, the central axis of the mounting hole and the central axis of the mounting groove are overlapped with each other.

Preferably, the driving mechanism comprises a movable sleeve rotatably connected to the horizontal part of the L-shaped supporting plate, the movable sleeve is provided with two open ends and a hollow interior, an inner thread is arranged on the inner wall of the movable sleeve, a first threaded rod is connected to the interior of the movable sleeve in a threaded manner, the exterior of the movable sleeve is rotatably connected with the horizontal part of the L-shaped supporting plate through a bearing, the top end of the movable sleeve extends to the upper part of the horizontal part of the L-shaped supporting plate and is fixedly connected with a limit ring, the limit ring is fixedly sleeved on the periphery of the top part of the movable sleeve, the bottom end of the movable sleeve extends to the lower part of the horizontal part of the L-shaped supporting plate and is fixedly sleeved with a driven bevel gear, a threaded hole is arranged in the driven bevel gear, the top end of the first threaded rod extends upwards to the upper part of the horizontal part of the L-shaped supporting plate, the bottom end of the first threaded rod penetrates through the driven bevel gear and is in threaded connection with the driven bevel gear, and the bottom end of the first threaded rod extends to the lower part of the driven bevel gear and is integrally connected with a positioning rod matched with the mounting groove, the positioning rod is inserted in the mounting groove; rotate the transmission shaft that is connected with the level and sets up on the vertical portion of L type backup pad, the one end of transmission shaft is extended and fixed cover to the direction that is close to first threaded rod is equipped with drive bevel gear, drive bevel gear meshes with driven bevel gear mutually, the other end of transmission shaft extends to the outside and the fixedly connected with crank of L type backup pad, the top of L type backup pad horizontal part is fixed with the guide bar of vertical setting, the top of guide bar is fixed with the limiting plate that the level set up, one side at first threaded rod top is fixed with the deflector that the level set up, offer the guiding hole that is used for supplying the guide bar to pass through on the deflector, deflector sliding connection is outside at the guide bar.

Preferably, the left end and the right end of the lower end beam are symmetrically provided with rail clamping mechanisms for locking the cart travelling rail; the rail clamping mechanism comprises two L-shaped fixed plates which are symmetrically arranged and fixedly connected with the front side and the rear side of the lower end beam, one end of the horizontal part of each L-shaped fixed plate is fixedly connected with the lower end beam, a horizontally arranged second threaded rod is connected onto the vertical part of each L-shaped fixed plate in a threaded manner, a threaded long hole matched with the second threaded rod is formed in the vertical part of each L-shaped fixed plate, one end of each second threaded rod penetrates through the threaded long hole and is rotatably connected with a vertically arranged mounting disc through a bearing, the other end of each second threaded rod extends to the outside of each L-shaped fixed plate and is fixedly provided with an adjusting hand wheel, a clamping block used for clamping a cart walking track is fixed on one side of the mounting disc, which is far away from the second threaded rod, symmetrically arranged slide blocks are fixed at the upper end and the lower end of the mounting disc, two symmetrically arranged transverse plates are fixed on the vertical parts of the L-shaped fixed plates at the two sides of the second threaded rods, and symmetrically arranged slide grooves are formed in the inner sides of the two transverse plates in the horizontal direction, the slider sliding connection is inside the spout.

Preferably, an anti-skid rubber pad is fixed on one side of the clamping block close to the cart travelling track.

The utility model has the beneficial effects that: (1) by arranging the supporting table, the mounting block, the mounting groove, the mounting plate, the L-shaped supporting plate, the first threaded rod, the driving mechanism and the bolt, when the crane normally operates, the driving mechanism drives the first threaded rod to move to the position above the mounting plate, because the mounting plate and the vertical part of the L-shaped supporting plate are arranged at intervals, the lower end beam can normally operate along a cart walking track, when wind-proof operation is needed, the mounting hole is just opposite to the first threaded rod, the driving mechanism drives the first threaded rod to move downwards until the first threaded rod penetrates through the mounting hole and is inserted into the mounting groove, the primary fixation between the mounting plate and the L-shaped supporting plate is realized, then the re-fixation between the mounting plate and the L-shaped supporting plate is realized through the bolt, and finally the connection between the lower end beam and the supporting table is realized; compared with the traditional portal crane without an overturn-preventing structure, the gantry crane can avoid the crane from sliding on a cart traveling track in windy weather, avoid the overturn phenomenon and improve the safety performance; (2) by arranging the positioning mechanism, when the windproof operation is required, the positioning block is detachably connected with the mounting plate, the positioning block is clamped into the positioning groove from back to front, when the front side of the positioning block is attached to the inner wall of the front end of the positioning groove, the central axis of the first threaded rod, the central axis of the mounting hole and the central axis of the mounting groove are coincident with each other, the mounting plate is conveniently positioned, the first threaded rod, the mounting hole and the mounting groove do not need to be aligned through manual observation, and the operation process is simplified; (3) through setting up the rail mechanism of pressing from both sides, use with anchoring mechanism cooperation, improve portal crane's anti-overturning performance.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the anchoring mechanism coupled to the L-shaped support plate and mounting plate;

FIG. 3 is a schematic structural view of the positioning mechanism;

fig. 4 is a schematic structural view of the connection between the rail clamping mechanism and the lower end beam.

Reference numerals: 1-upper beam, 2-main beam, 3-trolley, 4-supporting leg, 5-lower beam, 6-trolley walking track, 7-walking wheel, 8-mounting plate, 9-supporting platform, 10-L-shaped supporting plate, 11-first threaded rod, 12-mounting hole, 13-mounting block, 14-mounting groove, 15-first threaded hole, 16-second threaded hole, 17-bolt, 18-positioning block, 19-first connecting plate, 20-second connecting plate, 21-first positioning hole, 22-second positioning hole, 23-fixed pin, 24-positioning groove, 25-movable sleeve, 26-limiting ring, 27-driven bevel gear, 28-positioning rod, 29-transmission shaft, 30-driving bevel gear, 31-crank, 32-guide rod, 33-limiting plate, 34-guide plate, 35-L-shaped fixing plate, 36-second threaded rod, 37-long hole, 38-mounting plate, 39-adjusting disk, 39-hand wheel, 40-clamping block, 41-sliding block, 42-transverse plate, 43-sliding groove, 44-antiskid rubber pad.

Detailed Description

As shown in figure 1, the utility model comprises two upper end beams 1 which are arranged in parallel, a main beam 2 is fixedly connected between the two upper end beams 1, a crane trolley 3 is arranged on the main beam 2, two ends of the bottom of each upper end beam 1 are respectively fixed with a vertically arranged supporting leg 4, a lower end beam 5 which is parallel to the upper end beam 1 is arranged between the bottoms of the two supporting legs 4, a cart walking track 6 is paved on the ground, two ends of the inner part of each lower end beam 5 are respectively provided with a walking wheel 7, the walking wheels 7 are matched with the cart walking track 6 in a rolling way, each lower end beam 5 is respectively provided with a cart walking mechanism for driving the walking wheels 7 to move along the cart walking track 6, the direction of the cart walking track 6 is taken as the left-right direction, the running direction of the crane trolley 3 is taken as the front-back direction, as shown in figure 2, a horizontally arranged mounting plate 8 is respectively fixed on the front side and the back side of the middle position of each lower end beam 5, the front and back both sides of cart walking track 6 bottom are fixed with respectively the brace table 9 that sets up with 8 one-to-one of mounting panel, the bottom and the ground of brace table 9 are fixed, the L type backup pad 10 of vertical setting is fixed with at brace table 9 top, the bottom mounting of the vertical portion of L type backup pad 10, the horizontal part of L type backup pad 10 is located brace table 9 top, mounting panel 8 deviates from the one end of lower beam 5 and the vertical portion interval setting of L type backup pad 10, be provided with between L type backup pad 10 and the mounting panel 8 and be used for dismantling the anchoring mechanism who is connected mounting panel 8 and L type backup pad 10. The anchoring mechanism comprises a first threaded rod 11 which is vertically arranged, the first threaded rod 11 is connected to the horizontal portion of an L-shaped supporting plate 10 in a sliding mode in a liftable mode, a driving assembly used for driving the first threaded rod 11 to ascend and descend is arranged on the L-shaped supporting plate 10, as shown in figure 3, a mounting hole 12 used for allowing the first threaded rod 11 to pass through is formed in a mounting plate 8, a mounting block 13 which corresponds to the first threaded rod 11 is fixed to the top of a supporting table 9, a mounting groove 14 with an upward opening is formed in the mounting block 13, the bottom end of the first threaded rod 11 penetrates through the mounting hole 12 and is inserted into the mounting groove 14, a plurality of first threaded holes 15 which are arranged at intervals are formed in the horizontal portion of the L-shaped supporting plate 10, second threaded holes 16 which correspond to the first threaded holes 15 one to one are formed in the mounting plate 8, and first threaded holes 15 are sequentially arranged between the horizontal portion of the L-shaped supporting plate 10 and the mounting plate 8, The bolt 17 of the second threaded hole 16 is detachably attached. A positioning mechanism for positioning the mounting plate 8 is arranged between one end of the mounting plate 8, which is far away from the lower end beam 5, and the vertical part of the L-shaped support plate 10. Positioning mechanism includes can dismantle the locating piece 18 of being connected with mounting panel 8, the one end of locating piece 18 is fixed with the first connecting plate 19 with the perpendicular setting of locating piece 18, the one end that mounting panel 8 deviates from lower beam 5 is fixed with the second connecting plate 20 with the perpendicular setting of mounting panel 8, set up the first locating hole 21 that a plurality of even intervals set up on the first connecting plate 19, set up a plurality of second locating holes 22 that set up with first locating hole 21 one-to-one on the second connecting plate 20, locating piece 18 is through running through first locating hole 21 in proper order, the fixed pin 23 of second locating hole 22 can be dismantled with mounting panel 8 and be connected. As shown in fig. 3, a positioning groove 24 with an opening arranged towards the positioning block 18 is formed in the vertical portion of the L-shaped support plate 10, the positioning groove 24 extends along the front-back direction of the vertical portion of the L-shaped support plate 10, one end of the positioning groove 24 extends to the rear end of the vertical portion of the L-shaped support plate 10, the other end of the positioning groove 24 extends to the middle of the vertical portion of the L-shaped support plate 10, and one end of the positioning block 18 departing from the mounting plate 8 is slidably connected inside the positioning groove 24. When the front side of the positioning block 18 is attached to the inner wall of the front end of the positioning groove 24, the central axis of the first threaded rod 11, the central axis of the mounting hole 12 and the central axis of the mounting groove 14 are all coincident with each other. When the portal crane works normally, the end part of the mounting plate 8 is not connected with the positioning block 18, the bottom of the first threaded rod 11 is positioned above the mounting plate 8, and the mounting plate 8 is not connected with the bolt 17, at the moment, because one end of the mounting plate 8, which is far away from the lower end beam 5, is arranged at an interval with the vertical part of the L-shaped support plate 10, the lower end beam 5 can normally run along the cart running track 6; and when need prevent wind the operation, remove lower beam 5, make mounting hole 12 just to first threaded rod 11, drive first threaded rod 11 downstream through actuating mechanism, until first threaded rod 11 runs through mounting hole 12 and plug in inside mounting groove 14, realize the preliminary fixed between mounting panel 8 and the L type backup pad 10, then realize fixing once more between the two through bolt 17, finally realize being connected between lower beam 5 and the brace table 9. The driving mechanism comprises a movable sleeve 25 which is rotatably connected with the horizontal part of the L-shaped supporting plate 10, the two ends of the movable sleeve 25 are open, the interior of the movable sleeve 25 is hollow, internal threads are arranged on the inner wall of the movable sleeve 25, a first threaded rod 11 is connected with the interior of the movable sleeve 25 in a threaded manner, the exterior of the movable sleeve 25 is rotatably connected with the horizontal part of the L-shaped supporting plate 10 through a bearing, the top end of the movable sleeve 25 extends to the upper part of the horizontal part of the L-shaped supporting plate 10 and is fixedly connected with a limiting ring 26, the limiting ring 26 is fixedly sleeved on the periphery of the top part of the movable sleeve 25, the bottom end of the movable sleeve 25 extends to the lower part of the horizontal part of the L-shaped supporting plate 10 and is fixedly sleeved with a driven bevel gear 27, a threaded hole is arranged in the driven bevel gear 27, the top end of the first threaded rod 11 extends upwards to the upper part of the horizontal part of the L-shaped supporting plate 10, the bottom end of the first threaded rod 11 penetrates through the driven bevel gear 27 and is in a threaded connection with the driven bevel gear 27, the bottom end of the first threaded rod 11 extends to the lower part of the driven bevel gear 27 and is integrally connected with a positioning rod 28 matched with the mounting groove 14, and the positioning rod 28 is inserted in the mounting groove 14; rotate on the vertical portion of L type backup pad 10 and be connected with transmission shaft 29 that the level set up, the one end of transmission shaft 29 is extended and fixed cover is equipped with drive bevel gear 30 to the direction that is close to first threaded rod 11, drive bevel gear 30 meshes with driven bevel gear 27 mutually, the other end of transmission shaft 29 extends to the outside and the fixedly connected with crank 31 of L type backup pad 10, the top of L type backup pad 10 horizontal part is fixed with the guide bar 32 of vertical setting, the limiting plate 33 that the top of guide bar 32 was fixed with the level and sets up, one side at first threaded rod 11 top is fixed with the deflector 34 that the level set up, offer the guiding hole that is used for supplying guide bar 32 to pass through on the deflector 34, deflector 34 sliding connection is outside at guide bar 32. Through rotating crank 31, drive transmission shaft 29 in proper order, drive bevel gear 30, driven bevel gear 27 rotates, because the movable sleeve 25 passes through the bearing and is connected with the horizontal part of L type backup pad 10 is rotated, and because the movable sleeve 25, driven bevel gear 27 all with first threaded rod 11 threaded connection, under the limiting displacement of deflector 34 and deflector rod 32, driven bevel gear 27 rotates and the movable sleeve 25 rotates and drives first threaded rod 11 and realize the up-and-down motion along the movable sleeve 25, and because limiting plate 33's limiting displacement, when the bottom upward movement of first threaded rod 11 to the top of mounting panel 8, because stopping of limiting plate 33, first threaded rod 11 can not continue the upward movement, avoid first threaded rod 11 to follow the inside outwards of movable sleeve 25 and deviate from.

As shown in fig. 4, rail clamping mechanisms for locking the cart running rails 6 are symmetrically arranged at the left and right ends of the lower end beam 5, each rail clamping mechanism comprises two L-shaped fixing plates 35 which are symmetrically arranged and fixedly connected at the front and back sides of the lower end beam 5, one end of a horizontal part of each L-shaped fixing plate 35 is fixedly connected with the lower end beam 5, a second threaded rod 36 which is horizontally arranged is in threaded connection with a vertical part of each L-shaped fixing plate 35, a threaded long hole 37 which is matched with the second threaded rod 36 is formed in the vertical part of each L-shaped fixing plate 35, one end of each second threaded rod 36 penetrates through the threaded long hole 37 and is rotatably connected with a vertically arranged mounting plate 38 through a bearing, the other end of each second threaded rod 36 extends to the outside of the corresponding L-shaped fixing plate 35 and is fixed with an adjusting hand wheel 39, one side of the mounting plate 38, which is far away from the second threaded rod 36, is fixed with a clamping block 40 for clamping the cart running rails 6, the upper end and the lower end of the mounting disc 38 are fixed with symmetrically arranged sliding blocks 41, two symmetrically arranged transverse plates 42 are fixed on the vertical part of the L-shaped fixing plate 35 positioned at the two sides of the second threaded rod 36, sliding grooves 43 symmetrically arranged are formed in the inner sides of the two transverse plates 42 along the horizontal direction, and the sliding blocks 41 are slidably connected inside the sliding grooves 43. Through rotating second threaded rod 36, make second threaded rod 36 along screw slot hole 37 move in the horizontal direction, because rotate between second threaded rod 36 and the mounting disc 38 and be connected, and because the limiting displacement of spout 43, when second threaded rod 36 rotated for grip block 40 can not take place rotatoryly, and can only slide along the horizontal direction, thereby realized the regulation to interval between grip block 40 and the cart walking track 6. An anti-skid rubber pad 44 is fixed on one side of the clamping block 40 close to the cart traveling track 6, so that the friction force between the clamping block and the cart traveling track 6 is enhanced.

The working principle and the working process of the utility model are as follows: when the portal crane works normally, the end part of the mounting plate 8 is not connected with the positioning block 18, the bottom of the first threaded rod 11 is positioned above the mounting plate 8, the mounting plate 8 is not connected with the bolt 17, the clamping block 40 is not attached to the cart walking track 6, at the moment, one end of the mounting plate 8, which is far away from the lower end beam 5, is arranged at an interval with the vertical part of the L-shaped support plate 10, and the lower end beam 5 can normally run along the cart walking track 6; when the windproof operation is needed, the positioning block 18 is connected with the mounting plate 8, the lower end beam 5 drives the positioning block 18 to be clamped into the positioning groove 24 from back to front, when the front side of the positioning block 18 is attached to the inner wall of the front end of the positioning groove 24, the central axis of the first threaded rod 11, the central axis of the mounting hole 12 and the central axis of the mounting groove 14 are coincident with each other, the crank 31 is rotated to sequentially drive the transmission shaft 29, the driving bevel gear 30 and the driven bevel gear 27 to rotate, the driven bevel gear 27 and the movable sleeve 25 are rotatably connected with the horizontal part of the L-shaped support plate 10 through a bearing, and the movable sleeve 25 and the driven bevel gear 27 are both in threaded connection with the first threaded rod 11, under the limiting action of the guide plate 34 and the guide rod 32, the rotation of the driven bevel gear 27 and the rotation of the movable sleeve 25 can drive the first threaded rod 11 to move downwards along the movable sleeve 25 until the first threaded rod 11 penetrates through the mounting hole 12 and is inserted into the mounting groove 14, the primary fixation between the mounting plate 8 and the L-shaped support plate 10 is realized, the secondary fixation between the mounting plate and the L-shaped support plate is realized through the bolt 17, and the connection between the lower end beam 5 and the support table 9 is finally realized; and through rotating second threaded rod 36, make second threaded rod 36 drive grip block 40 to the direction motion of being close to cart walking track 6, make grip block 40 contact and the tight cart walking track 6 in top, finally realize fixed the centre gripping of cart walking track 6, avoided the gantry crane to take place to slide along cart walking track 6 when meeting with the strong wind weather and overturn even.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a gantry crane with prevent structure of toppling, upper beam including two parallel arrangement, fixedly connected with girder between two upper beam, be provided with the trolley on the girder, the both ends of every upper beam bottom portion all are fixed with the landing leg of vertical setting, be provided with the lower extreme roof beam that parallels with the upper beam between the bottom of two landing legs, the subaerial cart walking track that has spread, the inside both ends of every lower beam all are provided with the walking wheel, walking wheel and cart walking track roll-in cooperation, all be equipped with the cart running gear who is used for the driving walking wheel to follow cart walking track motion on every lower beam, use cart walking orbital direction to control the direction, use the traffic direction of trolley to be the fore-and-aft direction, its characterized in that: the front side and the rear side of the middle position of each lower end beam are respectively fixed with a horizontally arranged mounting plate, the front side and the rear side of the bottom of the cart walking track are respectively fixed with a supporting table which is arranged in one-to-one correspondence with the mounting plates, the bottom of the supporting table is fixed with the ground, the top of the supporting table is fixed with a vertically arranged L-shaped supporting plate, the bottom end of the vertical part of the L-shaped supporting plate is fixed at the top of the supporting table, the horizontal part of the L-shaped supporting plate is positioned above the supporting table, one end of the mounting plate, which is deviated from the lower end beam, is arranged at an interval with the vertical part of the L-shaped supporting plate, and an anchoring mechanism for detachably connecting the mounting plates with the L-shaped supporting plate is arranged between the L-shaped supporting plate and the mounting plate; anchoring mechanism includes the first threaded rod of vertical setting, sliding connection is on the horizontal part of L type backup pad with first threaded rod liftable, be provided with the drive assembly who is used for driving first threaded rod and goes up and down in the L type backup pad, set up the mounting hole that is used for supplying first threaded rod to pass through on the mounting panel, a supporting bench top is fixed with the installation piece that corresponds the setting with first threaded rod, the inside mounting groove that sets up of opening up of installation piece, the bottom of first threaded rod is run through the mounting hole and is pegged graft inside the mounting groove, set up the first screw hole that a plurality of intervals set up on the horizontal part of L type backup pad, set up the second screw hole that sets up with first screw hole one-to-one on the mounting panel, through running through first screw hole in proper order between the horizontal part of L type backup pad and the mounting panel, the bolt detachable connection of second screw hole.

2. The gantry crane with an overturn preventing structure as claimed in claim 1, wherein: a positioning mechanism for positioning the mounting plate is arranged between one end of the mounting plate, which is far away from the lower end beam, and the vertical part of the L-shaped support plate; the positioning mechanism comprises a positioning block detachably connected with the mounting plate, a first connecting plate vertically arranged with the positioning block is fixed at one end of the positioning block, a second connecting plate vertically arranged with the mounting plate is fixed at one end of the mounting plate deviating from the lower end beam, a plurality of first positioning holes are arranged on the first connecting plate at uniform intervals, a plurality of second positioning holes corresponding to the first positioning holes one by one are arranged on the second connecting plate, the positioning block sequentially penetrates through the first positioning holes, the fixing pin of the second positioning hole is detachably connected with the mounting plate, a positioning groove with an opening facing the positioning block is formed in the vertical portion of the L-shaped support plate, the positioning groove extends along the front-back direction of the vertical portion of the L-shaped support plate, one end of the positioning groove extends to the rear end of the vertical portion of the L-shaped support plate, the other end of the positioning groove extends to the middle of the vertical portion of the L-shaped support plate, and one end, away from the mounting plate, of the positioning block is connected inside the positioning groove in a sliding mode; when the front side of the positioning block is attached to the inner wall of the front end of the positioning groove, the central axis of the first threaded rod, the central axis of the mounting hole and the central axis of the mounting groove are overlapped with each other.

3. The gantry crane with an overturn preventing structure as claimed in claim 2, wherein: the driving mechanism comprises a movable sleeve which is rotatably connected with the horizontal part of the L-shaped supporting plate, the two ends of the movable sleeve are open, the inner part of the movable sleeve is hollow, internal threads are arranged on the inner wall of the movable sleeve, a first threaded rod is connected inside the movable sleeve in a threaded manner, the outer part of the movable sleeve is rotatably connected with the horizontal part of the L-shaped supporting plate through a bearing, the top end of the movable sleeve extends to the upper part of the horizontal part of the L-shaped supporting plate and is fixedly connected with a limiting ring, the limiting ring is fixedly sleeved on the periphery of the top part of the movable sleeve, the bottom end of the movable sleeve extends to the lower part of the horizontal part of the L-shaped supporting plate and is fixedly sleeved with a driven bevel gear, a threaded hole is formed in the driven bevel gear, the top end of the first threaded rod extends upwards to the upper part of the horizontal part of the L-shaped supporting plate, the bottom end of the first threaded rod penetrates through the driven bevel gear and is in threaded connection with the driven bevel gear, and the bottom end of the first threaded rod extends to the lower part of the driven bevel gear and is integrally connected with a positioning rod matched with the mounting groove, the positioning rod is inserted in the mounting groove; rotate the transmission shaft that is connected with the level and sets up on the vertical portion of L type backup pad, the one end of transmission shaft is extended and fixed cover to the direction that is close to first threaded rod is equipped with drive bevel gear, drive bevel gear meshes with driven bevel gear mutually, the other end of transmission shaft extends to the outside and the fixedly connected with crank of L type backup pad, the top of L type backup pad horizontal part is fixed with the guide bar of vertical setting, the top of guide bar is fixed with the limiting plate that the level set up, one side at first threaded rod top is fixed with the deflector that the level set up, offer the guiding hole that is used for supplying the guide bar to pass through on the deflector, deflector sliding connection is outside at the guide bar.

4. Gantry crane with an anti-overturning structure according to claim 3, characterized in that: rail clamping mechanisms for locking the cart travelling rail are symmetrically arranged at the left end and the right end of the lower end beam; the rail clamping mechanism comprises two L-shaped fixed plates which are symmetrically arranged and fixedly connected with the front side and the rear side of the lower end beam, one end of the horizontal part of each L-shaped fixed plate is fixedly connected with the lower end beam, a horizontally arranged second threaded rod is connected to the vertical part of each L-shaped fixed plate in a threaded manner, a threaded long hole matched with the second threaded rod is formed in the vertical part of each L-shaped fixed plate, one end of each second threaded rod penetrates through the threaded long hole and is rotatably connected with a vertically arranged mounting disc through a bearing, the other end of each second threaded rod extends to the outside of each L-shaped fixed plate and is fixedly provided with an adjusting hand wheel, a clamping block for clamping a cart walking track is fixed on one side of the mounting disc, which is far away from the second threaded rod, symmetrically arranged sliding blocks are fixed at the upper end and the lower end of the mounting disc, two symmetrically arranged transverse plates are fixed on the vertical parts of the L-shaped fixed plates positioned at the two sides of the second threaded rods, symmetrically arranged sliding grooves are formed in the inner sides of the two transverse plates along the horizontal direction, the slider sliding connection is inside the spout.

5. The gantry crane with an overturn preventing structure as claimed in claim 4, wherein: and an anti-skidding rubber pad is fixed on one side of the clamping block, which is close to the cart walking track.