CN219384556U

CN219384556U - Landing leg of gantry crane

Info

Publication number: CN219384556U
Application number: CN202320381797.9U
Authority: CN
Inventors: 杨胜国; 胡鸣超; 郭鹏涛
Original assignee: Henan Huanghe Explosion Proof Crane Co Ltd
Current assignee: Henan Huanghe Explosion Proof Crane Co Ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-07-21
Anticipated expiration: 2033-03-03

Abstract

The utility model relates to the technical field of portal cranes, and provides a landing leg of a portal crane. The worm is meshed with the worm wheel through rotating a turning hand in the adjusting mechanism, the worm wheel rotates to drive the bidirectional threaded screw rod to rotate, so that the two movable cylinders follow the steering of the bidirectional threaded screw rod, the two locking heads are driven to be mutually close to each other until the two locking heads are meshed with the ground track when the surfaces of the bidirectional threaded screw rod are mutually close, the self-locking property is realized through the worm after the two locking heads are meshed with the ground track, when the spiral angle of the worm is very small, the worm can only drive the worm wheel to rotate, and the worm wheel can not drive the worm to rotate, so that the purpose of locking the locking heads at the bottom end of the landing leg of the gantry crane is realized at any time; the locking heads are fixedly arranged at the bottom of the first mounting plate through the bolt assemblies, the locking heads can be detached and replaced when worn or damaged in long-time use, and the distance between the two locking heads can be adjusted according to actual conditions, so that the universality and the practicability of the locking heads are higher.

Description

Landing leg of gantry crane

Technical Field

The utility model relates to the technical field of gantry cranes, in particular to a landing leg of a gantry crane.

Background

Gantry cranes are a variant of bridge cranes, also called gantry cranes. The device is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk cargoes. The portal crane has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, and is widely used in port cargo yards. The metal structure of the utility model is like a door-shaped frame, two supporting legs are arranged under the bearing main beam, the walking device can walk on the track on the ground directly, and the two ends of the main beam can be provided with overhanging cantilever beams.

The utility model patent with the application number of 201821219748.0 discloses a wind-proof fixing device for a portal crane, which aims to solve the technical problems that: in order to solve the problem that the door crane is required to be fixed due to the shutdown of weather, the prior art mainly comprises several methods: (1) Automatically locking the gantry crane on the track by using the rail clamping device; (2) use other objects or devices to secure the pulley. The traditional fixing methods have the problems of difficult operation, consuming electricity and time, and wasting manpower and material resources. This application is directed to a wind-resistant fixture for a gantry crane, comprising: the rib plate is connected to the side part of the landing leg of the gantry crane, and a vertically-through limit socket is formed on the rib plate; the plugboard can be movably inserted into the limit socket up and down; the fixed block is fixed on the foundation structure below the plugboard, and a slot for the plugboard to be inserted when falling is formed in the upper part of the fixed block; and a locking piece for locking the plugboard and the supporting leg so as to prevent the plugboard from falling into the slot, wherein a locking hole for the locking piece to be inserted therein for locking is correspondingly formed in the plugboard and the supporting leg, but the locking structure is not fastened and easy to loosen in the application, and the locking piece is inserted in the locking hole only for fixing and is not stable enough, so that a certain sliding risk exists.

There is therefore a need for a gantry crane leg.

Disclosure of Invention

The utility model provides a landing leg of a portal crane, which solves the problems that a locking structure in the related art is not fastened enough and is easy to loosen, the stability of fixation is not enough only by inserting a locking piece into a locking hole, and a certain sliding risk exists.

The technical scheme of the utility model is as follows: the utility model provides a landing leg of gantry crane, includes landing leg bottom plate, curb plate, the side fixedly connected with slide bar of curb plate, the top of slide bar is provided with adjustment mechanism, adjustment mechanism is including changeing the hand, the inner wall fixedly connected with worm of changeing the hand, the surface engagement of worm is connected with the worm wheel, the inner wall fixedly connected with two-way screw thread lead screw of worm wheel, two-way screw thread lead screw's surface threaded connection has two movable barrels, the one end fixedly connected with fly leaf of movable barrel.

Preferably, the bottom fixedly connected with of fly leaf links the post, the bottom fixedly connected with mounting panel one that links the post, the bottom fixed mounting of mounting panel one has mounting panel two, the bottom of mounting panel two is equipped with the locking head, and the in-process that takes place relative motion at two movable blocks removal can drive the mounting panel one and the mounting panel two synchronous motion of its bottom, realizes that two locking heads in mounting panel two bottoms are close to each other, until interlock ground track.

Preferably, the top fixedly connected with slider of fly leaf, the spout has been seted up to the bottom of landing leg bottom plate, slider and spout sliding connection, two sliders and two spout sliding connection can carry out spacingly to two fly leaves.

Preferably, the fixed surface of slide bar is connected with the mount, the one end of worm runs through the inner wall of mount and rotates through the bearing and connect, and the mount plays the effect of fixed worm to set up the bearing in the inside of mount and can stabilize worm firm pivoted effect.

Preferably, the first mounting plate is fixedly arranged at the top of the second mounting plate through a bolt assembly, and the first mounting plate can be detached for maintenance or replacement when the locking head is damaged.

Preferably, the left section and the right section of the bidirectional screw thread are respectively provided with an orthodontic thread section and an inverse thread section, and the two movable cylinders are respectively connected with the orthodontic thread section and the inverse thread section on the surface of the bidirectional screw thread, so that the two movable cylinders can move relatively or reversely on the surface of the bidirectional screw thread after following the steering of the bidirectional screw thread.

Preferably, the bottom of landing leg bottom plate and the top fixed connection of curb plate, a plurality of mounting holes have been seted up at the top of landing leg bottom plate, and a plurality of mounting holes that landing leg bottom plate surface was seted up can carry out fixed mounting with the stabilizer blade bottom through the bolt subassembly.

Preferably, the number of the movable plates is two, and the two movable plates are sleeved on the surfaces of the two ends of the sliding rod.

Preferably, one side of the movable plate far away from the movable cylinder is contacted with the side surface of the side plate.

Preferably, the fixing frame is fixedly arranged at the central position of the surface of the sliding rod, and the fixed worm is positioned at the central position for rotation.

The working principle and the beneficial effects of the utility model are as follows:

1. according to the utility model, the worm is meshed with the worm wheel by rotating the turning hand in the adjusting mechanism, the worm wheel rotates to drive the bidirectional threaded screw rod to rotate, so that the two movable cylinders follow the steering of the bidirectional threaded screw rod, the surfaces of the bidirectional threaded screw rod are mutually close, and simultaneously, the two locking heads are driven to mutually close until the two locking heads are meshed with the ground track;

2. according to the utility model, the locking heads are fixedly arranged at the bottom of the first mounting plate through the bolt assembly, so that the locking heads can be detached and replaced when worn or damaged for a long time, and the distance between the two locking heads can be adjusted according to actual conditions, so that the universality and the practicability of the locking heads are higher.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view of a bottom view of the present utility model;

fig. 4 is an enlarged schematic view of a structure of the present utility model.

In the figure: 1, a supporting leg bottom plate; 2, mounting holes; 3, a side plate; 4, sliding bars; 5 an adjusting mechanism; 501 turning hands; 502 a worm; 503 worm gear; 504 a bidirectional threaded screw rod; 505 a movable barrel; 506 a movable plate; 6, fixing a frame; 7, connecting columns; 8 mounting plate I; 9 locking the head; 10, sliding blocks; 11 sliding grooves; and 12, mounting a second plate.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 4, the present utility model provides a supporting leg technical scheme of a gantry crane: the landing leg of the gantry crane comprises a landing leg bottom plate 1 and a side plate 3, wherein a slide bar 4 is fixedly connected to the side surface of the side plate 3, the bottom of the landing leg bottom plate 1 is fixedly connected with the top of the side plate 3, a plurality of mounting holes 2 are formed in the top of the landing leg bottom plate 1, and a plurality of mounting holes 2 formed in the surface of the landing leg bottom plate 1 can be fixedly mounted with the bottom ends of the supporting legs through bolt assemblies;

the top of the slide bar 4 is provided with an adjusting mechanism 5, the adjusting mechanism 5 comprises a turning hand 501, the inner wall of the turning hand 501 is fixedly connected with a worm 502, the surface of the slide bar 4 is fixedly connected with a fixing frame 6, the fixing frame 6 is fixedly arranged at the central position of the surface of the slide bar 4, the fixing worm 502 is positioned at the central position for rotating, one end of the worm 502 penetrates through the inner wall of the fixing frame 6 and is rotationally connected through a bearing, the fixing frame 6 plays a role in fixing the worm 502, and the bearing is arranged in the fixing frame 6 for stabilizing the worm 502 for stabilizing the rotation;

the surface of the worm 502 is meshed with a worm wheel 503, the inner wall of the worm wheel 503 is fixedly connected with a bidirectional threaded screw rod 504, the left section and the right section of the bidirectional threaded screw rod 504 are respectively provided with an orthodontic threaded section and an opposite threaded section, the two movable barrels 505 are respectively connected with the orthodontic threaded section and the opposite threaded section on the surface of the bidirectional threaded screw rod 504, so that the two movable barrels 505 can move oppositely or reversely on the surface of the bidirectional threaded screw rod 504 along with the steering direction of the bidirectional threaded screw rod 504, the surface of the bidirectional threaded screw rod 504 is in threaded connection with the two movable barrels 505, one end of the movable barrels 505 is fixedly connected with two movable plates 506, the number of the movable plates 506 is two, the two movable plates 506 are sleeved on the surfaces of the two ends of the sliding rod 4, one side of the movable plate 506 away from the movable barrels 505 is contacted with the side surface of the side plate 3, the top of the movable plate 506 is fixedly connected with a sliding block 10, the bottom of landing leg bottom plate 1 has seted up spout 11, slider 10 and spout 11 sliding connection, two sliders 10 and two spouts 11 sliding connection can carry out spacingly to two fly leaves 506, the bottom fixedly connected with even post 7 of fly leaf 506, the bottom fixedly connected with mounting panel one 8 of even post 7, the bottom fixed mounting of mounting panel one 8 has mounting panel two 12, mounting panel one 8 passes through bolt assembly fixed mounting at the top of mounting panel two 12, can dismantle the effect of maintenance or change when locking head 9 damages, the bottom of mounting panel two 12 is equipped with locking head 9, the in-process that moves the relative motion takes place at two fly leaves 506 can drive the mounting panel one 8 of its bottom and mounting panel two 12 synchronous motion, realize that two locking heads 9 of mounting panel two 12 bottoms are close to each other, until the interlock ground track.

The working principle and the using flow of the utility model are as follows: when the two-way locking device is used, the supporting leg bottom plate 1 is fixedly arranged at the bottom end of the supporting leg of the portal crane through the bolt assembly, the two locking heads 9 are placed at two sides of a ground track, a worker rotates the turning hand 501 to drive the internal worm 502 to rotate, the worm 502 rotates to be meshed with the worm wheel 503, the worm wheel 503 rotates to drive the two-way threaded screw rod 504 to rotate, the two movable cylinders 505 are respectively connected with the front thread section and the back thread section on the surface of the two-way threaded screw rod 504, the two movable cylinders 505 follow the steering direction of the two-way threaded screw rod 504 to perform relative motion on the surface of the two-way threaded screw rod 504, the two movable cylinders 505 move to drive the two movable plates 506 at the bottom of the two movable cylinders to be gradually close, the two locking heads 9 at the bottom can be driven to be mutually close until the two movable blocks 506 are meshed with the ground track in the process of being relatively close, and the user stops rotating the turning hand 501 because the worm wheel 503 has self-locking property and can not drive the worm 502 to rotate, and the purpose of high stability after the two locking heads 9 are adjusted can be realized.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a landing leg of gantry crane, includes landing leg bottom plate (1), curb plate (3), a serial communication port, the side fixedly connected with slide bar (4) of curb plate (3), the top of slide bar (4) is provided with adjustment mechanism (5), adjustment mechanism (5) are including turning over hand (501), the inner wall fixedly connected with worm (502) of turning over hand (501), the surface engagement of worm (502) is connected with worm wheel (503), the inner wall fixedly connected with two-way screw thread lead screw (504) of worm wheel (503), the surface threaded connection of two-way screw thread lead screw (504) has two movable cylinders (505), the one end fixedly connected with fly leaf (506) of movable cylinder (505).

2. The landing leg of the gantry crane according to claim 1, wherein the bottom of the movable plate (506) is fixedly connected with a connecting column (7), the bottom of the connecting column (7) is fixedly connected with a first mounting plate (8), a second mounting plate (12) is fixedly mounted at the bottom of the first mounting plate (8), and a locking head (9) is arranged at the bottom of the second mounting plate (12).

3. The landing leg of the gantry crane according to claim 1, wherein a sliding block (10) is fixedly connected to the top of the movable plate (506), a sliding groove (11) is formed in the bottom of the landing leg bottom plate (1), and the sliding block (10) is slidably connected with the sliding groove (11).

4. The landing leg of the portal crane according to claim 1, wherein the surface of the sliding rod (4) is fixedly connected with a fixing frame (6), and one end of the worm (502) penetrates through the inner wall of the fixing frame (6) and is rotationally connected through a bearing.

5. A gantry crane leg according to claim 2, characterized in that the first mounting plate (8) is fixedly mounted on top of the second mounting plate (12) by means of a bolt assembly.

6. The landing leg of the gantry crane according to claim 1, wherein the left section and the right section of the bidirectional threaded screw rod (504) are respectively provided with an orthodontic threaded section and an anti-orthodontic threaded section, and the two movable cylinders (505) are respectively connected with the orthodontic threaded section and the anti-orthodontic threaded section on the surface of the bidirectional threaded screw rod (504).

7. The landing leg of the portal crane according to claim 1, wherein the bottom of the landing leg bottom plate (1) is fixedly connected with the top of the side plate (3), and a plurality of mounting holes (2) are formed in the top of the landing leg bottom plate (1).

8. The landing leg of the gantry crane according to claim 1, wherein the number of the movable plates (506) is two, and the two movable plates (506) are sleeved on the surfaces of the two ends of the sliding rod (4).

9. A gantry crane leg according to claim 1, characterized in that the side of the movable plate (506) remote from the movable cylinder (505) is in contact with the side of the side plate (3).

10. The support leg of a gantry crane according to claim 4, characterized in that the fixing frame (6) is fixedly mounted in a central position on the surface of the slide bar (4).