CN223632965U

CN223632965U - A safety maintenance device for gantry cranes

Info

Publication number: CN223632965U
Application number: CN202520088091.2U
Authority: CN
Inventors: 刘强
Original assignee: Wuhan Kang'aosi Mechanical And Electrical Equipment Co ltd
Current assignee: Wuhan Kang'aosi Mechanical And Electrical Equipment Co ltd
Priority date: 2025-01-15
Filing date: 2025-01-15
Publication date: 2025-12-05
Anticipated expiration: 2035-01-15

Abstract

This utility model relates to a safety maintenance device for a gantry crane, comprising a crane beam, a U-shaped frame slidably mounted on the bottom of the crane beam, a connecting frame fixedly mounted on the bottom of the U-shaped frame, and a basket fixedly mounted on the bottom of the connecting frame. A load-bearing plate is fixedly mounted on the back of the basket. This gantry crane safety maintenance device allows workers to perform maintenance at the bottom of the crane beam using the basket. When heavy components need to be removed, a second motor drives a bidirectional screw to rotate, moving two rectangular plates and protrusions away from each other. A support arm then pushes a pallet upward to support the component, facilitating disassembly. Subsequently, a first motor drives a unidirectional screw to rotate, causing a moving plate to move left and right outside the crossbeam, moving the pallet to support components in different locations. After removal, the bidirectional screw is rotated in the opposite direction, bringing the two rectangular plates and protrusions closer together. The support arm then pulls the pallet downward, lowering the component. This operation significantly reduces the danger of maintenance work.

Description

Safety maintenance device for portal crane

Technical Field

The utility model relates to the technical field of crane maintenance, in particular to a safety maintenance device for a gantry crane.

Background

The gantry crane is used as a high-efficiency and convenient hoisting device and has wide application in a plurality of fields such as ports, shipyards, construction sites, factory production lines and the like, however, due to the complexity of the structure and the diversity of the operation environment, the safety problem of the gantry crane is particularly important, so that the research and development and application of the safety maintenance device of the gantry crane have important significance.

The utility model provides a ' safety maintenance device for an electric hoist gantry crane ', which is disclosed in the Chinese patent publication No. CN220317162U, and the technical scheme provides a ' safety maintenance device for an electric hoist gantry crane, wherein the safety maintenance device for the electric hoist gantry crane is simpler in structure, only carries workers through a simple placement frame, is inconvenient to move, is difficult to move to a fault point conveniently and stably, and reduces the practicability of the safety maintenance device ', and the utility model provides the technical scheme that ' the output end of a servo motor is arranged to drive a group of rotating shafts and two groups of transmission gears to rotate simultaneously, so that the transmission gears on the front side and the rear side can be meshed with gear teeth on the front side and the rear side respectively at the same time, further, a moving plate can smoothly and stably drive a bearing plate, a connecting rod, a protection frame and a platen to move along the track of a cross beam in the horizontal direction, the workers can reach the fault point conveniently and quickly, and the practicability of the safety maintenance device is improved.

The device has the following defects that the structure of auxiliary disassembly parts is lacking in practical use, when the parts are required to be disassembled in maintenance, personnel are required to hold the bottoms of the parts by hands, and then the disassembly operation is carried out, so that the risk coefficient is high, and the maintenance progress is delayed, and therefore, the safety maintenance device of the gantry crane is provided to solve the problems.

Disclosure of utility model

Aiming at the defects in the prior art, the utility model provides a safety maintenance device for a portal crane, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The safe maintenance device of the portal crane comprises a crane beam, a U-shaped frame, a connecting frame and a hanging basket, wherein the U-shaped frame is slidably arranged at the bottom of the crane beam, the connecting frame is fixedly arranged at the bottom of the U-shaped frame, the hanging basket is fixedly arranged at the bottom of the connecting frame, a stress plate is fixedly arranged at the back of the hanging basket, and an auxiliary disassembly maintenance structure is arranged at the top of the stress plate;

The auxiliary disassembly maintenance structure comprises a 匚 -shaped frame fixedly mounted at the top of a stressed plate, a first motor is fixedly mounted at the surface of the 匚 -shaped frame, a unidirectional screw is fixedly mounted at the output end of the first motor, the unidirectional screw is rotatably mounted in the 匚 -shaped frame, a cross rod positioned in front of the first motor is fixedly mounted in the 匚 -shaped frame, a movable plate in threaded connection with the unidirectional screw is mounted on the outer sliding mounting of the cross rod, two protruding blocks penetrating through the top of the movable plate are mounted in the inner sliding mounting of the movable plate, two rectangular plates are fixedly mounted at the tops of the protruding blocks, side posts are fixedly mounted at the front end and the rear end of the rectangular plates, supporting arms are rotatably mounted at the outer portions of the four side posts, supporting plates are rotatably mounted at the tops of the four supporting arms, a second motor is fixedly mounted at the right side of the side supporting block positioned on the right side of the top of the movable plate, and two bidirectional screws are fixedly mounted at the output ends of the second motor, and two bidirectional screws are mounted between the two rectangular plates and are mounted in the two threaded positions of the two rectangular plates.

The lifting device has the advantages that a worker is born at the bottom of a crane beam through a hanging basket to repair, when heavy parts are required to be removed, a second motor is started to drive a bidirectional screw rod to rotate, so that two rectangular plates and bumps are far away, a supporting plate is pushed to lift and support the parts through a supporting arm, the lifting device is convenient to remove, then a first motor is driven to drive a unidirectional screw rod to rotate, so that a moving plate moves left and right outside the cross rod, the supporting plate is driven to move, the parts at different positions are supported conveniently, after the lifting device is removed, the bidirectional screw rod is reversely rotated, the two rectangular plates and the bumps are close, the supporting plate is pulled to descend through the supporting arm, and the parts are driven to descend, so that the risk of repair operation is remarkably reduced.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, a rack is fixedly arranged at the bottom of the crane beam, a driving gear meshed with the rack is fixedly arranged in the U-shaped frame, a motor III is fixedly arranged on the right side of the U-shaped frame, and the output end of the motor III is fixedly connected with the right side of the driving gear.

Further, the back of the hanging basket is fixedly provided with a receiving cover, and the receiving cover is fixedly arranged outside the stress plate.

Furthermore, the back of the hanging basket is fixedly provided with a plurality of triangular brackets, and the triangular brackets are fixedly arranged at the bottom of the stress plate.

Further, the bottom of movable plate fixed mounting has a plurality of supporting wheels, and a plurality of the supporting wheel all slides in the top of atress board.

Further, rectangular frames close to the front side and the rear side of the movable plate are fixedly arranged at the top of the movable plate, and the four side posts are respectively and slidably arranged in the two rectangular frames.

Drawings

FIG. 1 is a schematic view of one view of the safety maintenance device of the gantry crane;

FIG. 2 is a schematic view of another view angle structure of the safety maintenance device of the gantry crane;

FIG. 3 is a schematic diagram of an explosion structure of the safety maintenance device of the gantry crane;

FIG. 4 is a schematic cross-sectional view of a movable plate;

FIG. 5 is an enlarged schematic view of the structure of FIG. 1A;

fig. 6 is an enlarged schematic view of the structure at B in fig. 2.

In the drawings, the list of components represented by the various numbers is as follows:

1. The crane comprises a crane beam, a U-shaped frame, a3, a connecting frame, a4, a hanging basket, a5, a stress plate, a 6, 匚 -shaped frame, a 7, a first motor, a 8, a one-way screw rod, a 9, a cross rod, a 10, a moving plate, a 11, a bump, a 12, a rectangular plate, a 13, a side column, a 14, a supporting arm, a 15, a supporting plate, a 16, a side support block, a 17, a second motor, a 18, a two-way screw rod, a 19, a rack, a 20, a driving gear, a 21, a third motor, a 22, a receiving cover, a 23, a triangular bracket, a 24, a supporting wheel, a 25 and a rectangular frame.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Embodiment 1, as shown in fig. 1-5, a gantry crane safety maintenance device comprises a crane beam 1, a U-shaped frame 2 slidably mounted at the bottom of the crane beam 1, a connecting frame 3 fixedly mounted at the bottom of the U-shaped frame 2, and a hanging basket 4 fixedly mounted at the bottom of the connecting frame 3, wherein a stress plate 5 is fixedly mounted at the back of the hanging basket 4, and an auxiliary disassembly maintenance structure is arranged at the top of the stress plate 5.

Specifically, the auxiliary disassembly maintenance structure comprises 匚 -shaped frames 6 fixedly mounted on the top of the stressed plate 5, a first motor 7 is fixedly mounted on the surface of 匚 -shaped frames 6, a unidirectional screw rod 8 is fixedly mounted at the output ends of the first motor 7, the unidirectional screw rod 8 is rotatably mounted in the 匚 -shaped frames 6, a cross rod 9 positioned in front of the first motor 7 is fixedly mounted in the 匚 -shaped frames 6, a movable plate 10 in threaded connection with the unidirectional screw rod 8 is slidably mounted on the outer portion of the cross rod 9, two lugs 11 penetrating through the tops of the movable plate 10 are slidably mounted in the inner portion of the movable plate 10, rectangular plates 12 are fixedly mounted at the tops of the two lugs 11, side posts 13 are fixedly mounted at the front end and the rear end of the two rectangular plates 12, supporting arms 14 are rotatably mounted at the outer portions of the four side posts 13, 15 are rotatably mounted at the tops of the four supporting arms 14, side supporting blocks 16 close to the left side and right sides of the movable plate 10 are fixedly mounted at the tops of the movable plate, a second motor 17 is fixedly mounted on the right side of the side supporting block 16 positioned on the right side of the top of the movable plate 10, two lugs 18 are fixedly mounted at the output ends of the two lugs 17, and 18 are rotatably mounted between the two rectangular plates 12 and are rotatably mounted between the two rectangular plates 12.

During the use, bear the weight of the staff and carry out maintenance work in the bottom of hoist crossbeam 1 through the hanging flower basket 4 of installing, when the heavier spare part needs to be dismantled, the accessible control No. two motor 17 starts, utilize No. two motor 17 drive bi-directional lead screw 18 forward rotation, force two rectangular plates 12 and lug 11 to keep away from each other, when two rectangular plates 12 keep away from each other, accessible four support arms 14 in its outside promote layer board 15 to rise, when the layer board 15 rises to contact with the bottom of hoist spare part, alright hold spare part through layer board 15, in order to dismantle spare part, afterwards, utilize No. one motor 7 drive uni-directional lead screw 8 forward and backward rotation, alright force movable plate 10 to control the outside of horizontal pole 9, afterwards, movable plate 10 alright drive the layer board 15 of its top and control, thereby be convenient for hold up the hoist spare part of different positions, after the spare part is dismantled, accessible control No. two motor 17 drive bi-directional lead screw 18 reverse rotation, force two rectangular plates 12 and lug 11 to be close to each other, when two rectangular plates 12 are close to each other, accessible four support arms 14 in the outside are pulled through its outside, alright support arm 15 is fallen through the layer board 15, the spare part is descended in order to reduce the danger of the hoist spare part obviously.

In example 2, as shown in fig. 1 to 6, this example is a further improvement on the basis of example 1, and specifically includes the following steps:

The bottom of the crane beam 1 is fixedly provided with a rack 19, the inside of the U-shaped frame 2 is fixedly provided with a driving gear 20 meshed with the rack 19, the right side of the U-shaped frame 2 is fixedly provided with a motor No. three 21, and the output end of the motor No. three 21 is fixedly connected with the right side of the driving gear 20.

The driving gear 20 is driven to rotate positively and reversely at the bottom of the rack 19 through the motor No. three 21, and the U-shaped frame 2, the connecting frame 3, the hanging basket 4 and the auxiliary disassembly maintenance structure can be driven to move back and forth, so that workers are conveniently driven to approach a fault area.

Example 3, as shown in fig. 1 to 3, this example is a further improvement on the basis of example 1, and is specifically as follows:

The back of the hanging basket 4 is fixedly provided with a receiving cover 22, and the receiving cover 22 is fixedly arranged outside the stress plate 5.

So configured, the receiving hood 22 is installed to facilitate receipt of dropped screws or small parts.

Example 4, as shown in fig. 2 to 3, this example is a further improvement on the basis of example 1, and is specifically as follows:

The back of the hanging basket 4 is fixedly provided with a plurality of triangular brackets 23, and the plurality of triangular brackets 23 are fixedly arranged at the bottom of the stress plate 5.

In this way, the stress plate 5 is supported on the back of the crane beam 1 through the triangular brackets 23, so that the purpose of supporting and reinforcing is achieved.

Example 5 this example is a further improvement over example 1, as shown in figures 1 and 5, and is specifically as follows:

The bottom of the movable plate 10 is fixedly provided with a plurality of supporting wheels 24, and the supporting wheels 24 slide on the top of the stress plate 5.

So arranged, the movable plate 10 is supported on the top of the force-bearing plate 5 by a plurality of support wheels 24 to slide, so as to reduce the pressure applied to the one-way screw 8 and the cross bar 9.

Example 6, as shown in fig. 1 and 5, this example is a further improvement on the basis of example 1, and is specifically as follows:

The top of the moving plate 10 is fixedly provided with rectangular frames 25 near both front and rear sides thereof, and four jambs 13 are respectively slidably installed inside the two rectangular frames 25.

By this arrangement, the four side posts 13 are respectively restrained to slide left and right on the top of the moving plate 10 by the two pallets 15, so that the four support arms 14 are more stable when folded.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The safety maintenance device for the portal crane comprises a crane beam (1), a U-shaped frame (2) which is slidably arranged at the bottom of the crane beam (1), a connecting frame (3) which is fixedly arranged at the bottom of the U-shaped frame (2) and a hanging basket (4) which is fixedly arranged at the bottom of the connecting frame (3), and is characterized in that a stress plate (5) is fixedly arranged at the back of the hanging basket (4), and an auxiliary disassembly maintenance structure is arranged at the top of the stress plate (5);

The auxiliary disassembly and maintenance structure comprises a 匚 -shaped frame (6) fixedly mounted at the top of a stressed plate (5), a first motor (7) is fixedly mounted on the surface of the 匚 -shaped frame (6), a one-way screw (8) is fixedly mounted at the output end of the first motor (7), side posts (13) are rotatably mounted at the front and rear ends of the first motor (12), a cross rod (9) positioned in front of the first motor (7) is fixedly mounted at the inner part of the 匚 -shaped frame (6), a moving plate (10) in threaded connection with the one-way screw (8) is slidably mounted at the outer part of the cross rod (9), two lugs (11) penetrating through the top of the moving plate (10) are fixedly mounted at the top of the moving plate, rectangular plates (12) are fixedly mounted at the top of the two lugs (11), side posts (13) are rotatably mounted at the front and rear ends of the two rectangular plates (12), a support arm (14) is rotatably mounted at the outer part of the four side posts (13), a moving plate (10) is slidably mounted at the top of the four side posts (14), a moving plate (10) is mounted at the top of the two-way support arm (16) and is fixedly mounted at the top of the two-side plates (16), the bidirectional screw rod (18) is rotatably arranged between the two side branch blocks (16) and is threadedly arranged in the two rectangular plates (12).

2. The gantry crane safety maintenance device according to claim 1, wherein a rack (19) is fixedly arranged at the bottom of the crane beam (1), a driving gear (20) meshed with the rack (19) is fixedly arranged inside the U-shaped frame (2), a motor No. three (21) is fixedly arranged on the right side of the U-shaped frame (2), and the output end of the motor No. three (21) is fixedly connected with the right side of the driving gear (20).

3. The gantry crane safety maintenance device according to claim 1, wherein the back of the basket (4) is fixedly provided with a receiving cover (22), and the receiving cover (22) is fixedly arranged outside the stress plate (5).

4. The safety maintenance device for the portal crane according to claim 1, wherein a plurality of triangular brackets (23) are fixedly arranged at the back of the hanging basket (4), and the plurality of triangular brackets (23) are fixedly arranged at the bottom of the stress plate (5).

5. A gantry crane safety maintenance device according to claim 1, wherein a plurality of support wheels (24) are fixedly arranged at the bottom of the movable plate (10), and the plurality of support wheels (24) slide on the top of the stress plate (5).

6. The gantry crane safety maintenance device according to claim 1, wherein the top of the movable plate (10) is fixedly provided with rectangular frames (25) near the front and rear sides thereof, and four side posts (13) are respectively slidably installed inside the two rectangular frames (25).