Maintenance tool for gantry crane

Abstract

A maintenance tool for a portal crane comprises scaling ladder equipment and a sliding mechanism arranged on the surface of the scaling ladder equipment, a bottom plate is arranged at the top of the sliding mechanism, a plurality of supports are fixedly connected to the outer side of the bottom plate and fixed to the top of the sliding mechanism, a maintenance platform is fixedly connected between the supports, and a lifting guardrail is arranged at the top of the maintenance platform. A lifting mechanism is arranged between the lifting guardrail and the maintenance platform, and a hanging assembly is arranged at the top of the lifting guardrail. Compared with the prior art, the technical effects of the utility model are that the plurality of supporting wheels are respectively driven to roll on the sliding mechanism through the cross-shaped rods, so that the unfolding stability of the two expansion tables can be improved through the arrangement of the two T-shaped supporting frames, the two cross-shaped rods and the plurality of supporting wheels; therefore, the personnel can work at ease when standing on the expansion table.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance tool technology, specifically relating to a maintenance tool for bridge cranes. Background Technology

[0002] Bridge cranes, also known as bridge cranes, are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their two ends are supported by tall concrete pillars or metal supports, they resemble bridges and door frames. The bridge of a bridge crane runs longitudinally along the tracks laid on the elevated structures on both sides, making full use of the space under the bridge to lift materials without being obstructed by ground equipment. It is the most widely used and most numerous type of lifting machinery.

[0003] The gantry crane maintenance tool, with announcement number CN220886949U, includes a ladder device and a sliding mechanism installed on its upper surface. A bracket is installed on the surface of the sliding mechanism, and a maintenance platform is fixedly connected to the top of the bracket. A lifting guardrail is installed directly above the maintenance platform. Extension components are installed on the outer sides of both sides of the maintenance platform, and a hoisting component is installed on one side of the upper surface of the lifting guardrail.

[0004] In the above solution, workers can repair gantry cranes on the extension platform or place larger repair equipment and instruments on the extension platform to increase the scope of use and provide convenience for workers. However, the extension platform is supported by support rollers in a relatively simple way, which does not have a stable effect, thus causing workers to feel uneasy when standing on the extension platform. Utility Model Content

[0005] The technical problem this utility model aims to solve is: how to design a maintenance tool for bridge cranes to improve the stability of the extended platform during deployment.

[0006] The specific technical solution of this utility model is as follows:

[0007] A maintenance tool for a bridge crane includes a ladder device and a sliding mechanism disposed on its surface. The top of the sliding mechanism is provided with a base plate, and multiple supports are fixedly connected to the outside of the base plate. The multiple supports are all fixed to the top of the sliding mechanism, and a maintenance platform is fixedly connected between the multiple supports. The top of the maintenance platform is provided with a lifting guardrail, and a lifting mechanism is provided between the lifting guardrail and the maintenance platform. A hoisting component is provided on the top of the lifting guardrail. Extension platforms are provided on both sides of the maintenance platform, and sliding cavities are opened on both sides of the maintenance platform. The extension platforms are disposed inside the sliding cavities and can slide within the sliding cavities.

[0008] An adjustment mechanism is provided between the two extension stations, which is used to drive the extension stations to slide on the maintenance platform.

[0009] The top of the extension platform is fixedly connected to a guardrail, which is set inside two track grooves and slidably connected to the maintenance platform. The top of the sliding cavity is formed with a track groove, and part of the guardrail is located in the track groove. When the extension platform slides in the sliding cavity, the guardrail also slides in the track groove.

[0010] The adjustment structure includes a first mounting groove, inside which is provided a first bidirectional screw. The two ends of the first bidirectional screw pass through the groove wall of the first mounting groove and extend into the two sliding cavities. The first bidirectional screw is rotatably connected to the groove wall of the first mounting groove of the maintenance platform. Each of the two expansion platforms has a first threaded groove on one side opposite to the other. The two ends of the first bidirectional screw are respectively set in the two first threaded grooves and threadedly connected to the two expansion platforms.

[0011] The adjustment structure also includes a worm gear, which is located inside the first mounting groove and is fixedly connected to the outside of the first bidirectional screw. A worm is meshed with the outside of the worm gear, and the top of the worm passes through the top of the inside of the first mounting groove and is rotatably connected to the maintenance platform. A throttle is installed on the top of the worm.

[0012] Both extension platforms are fixedly connected to a T-shaped support frame at their bottom, and both T-shaped support frames are fixedly connected to a cross rod at their bottom. Multiple support wheels are provided at the bottom of the cross rod, and these support wheels contact the surface of the sliding mechanism. Cross grooves are formed on both sides of the base plate, and the sidewalls of the cross rods are located inside these grooves and slidably connected to the base plate. A transmission structure is provided between the two cross rods. The transmission structure includes a second mounting groove, which is located at the top of the base plate. A second bidirectional screw rod passes through the second mounting groove, with both ends passing through the groove walls and extending into the two cross grooves. The screw is rotatably connected to the second mounting groove of the base plate. The two cross rods are provided with second threaded grooves on opposite sides. The two ends of the second bidirectional screw are respectively set inside the two second threaded grooves and threadedly connected to the two cross rods. The transmission structure also includes a second sprocket, which is located inside the second mounting groove and is fixedly connected to the outside of the second bidirectional screw. A first sprocket is provided above the second sprocket and is fixedly connected to the outside of the first bidirectional screw. The second sprocket and the first sprocket are connected by chain drive. A through hole is formed at the bottom of the first mounting groove, and the chain passes through the through hole.

[0013] Compared with the prior art, the technical effect of this utility model is that the cross rod drives multiple support wheels to roll on the sliding mechanism. Therefore, the stability of the two extension platforms can be improved by setting up two T-shaped support frames, two cross rods and multiple support wheels, so that people can work on the extension platforms with more peace of mind. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a three-dimensional schematic diagram of the upper part of this utility model.

[0016] Figure 3 This is a cross-sectional view of the expansion station.

[0017] Figure 4 yes Figure 3 A schematic diagram of area A in the middle. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1-2 A bridge crane maintenance tool includes a ladder device 1 and a sliding mechanism 2 disposed on its surface. The top of the sliding mechanism 2 is provided with a base plate 5. Multiple supports 4 are fixedly connected to the outside of the base plate 5. The multiple supports 4 are all fixed to the top of the sliding mechanism 2. A maintenance platform 3 is fixedly connected between the multiple supports 4. The top of the maintenance platform 3 is provided with a lifting guardrail 15. A lifting mechanism 17 is provided between the lifting guardrail 15 and the maintenance platform 3. A hoisting component 16 is provided on the top of the lifting guardrail 15.

[0020] The maintenance platform 3 is provided with an extension platform 13 on both sides, and a sliding cavity 6 is provided on both sides of the maintenance platform 3. The extension platform 13 is located inside the sliding cavity 6 and can slide within the sliding cavity 6.

[0021] An adjustment mechanism is provided between the two extension platforms 13, which is used to drive the extension platform 13 to slide on the maintenance platform 3.

[0022] The top of the extension platform 13 is fixedly connected to a guardrail 14. The guardrail 14 is respectively set inside the two track grooves 60 and slidably connected to the maintenance platform 3. The top of the sliding cavity 6 is formed with a track groove 60. A part of the guardrail 14 is located in the track groove 60. When the extension platform 13 slides in the sliding cavity 6, the guardrail 14 also slides in the track groove 60.

[0023] To facilitate adjustment and positioning, the following improvements have been made:

[0024] The adjustment structure includes a first mounting groove 7, inside which is provided a first bidirectional screw 8. The two ends of the first bidirectional screw 8 pass through the groove wall of the first mounting groove 7 and extend into the two sliding cavities 6. The first bidirectional screw 8 is rotatably connected to the groove wall of the first mounting groove 7 of the maintenance platform 3. The two expansion platforms 13 are provided with first threaded grooves on opposite sides. The two ends of the first bidirectional screw 8 are respectively set in the two first threaded grooves and threadedly connected to the two expansion platforms 13.

[0025] To facilitate the rotation of the first bidirectional screw 8, the following further improvements are made:

[0026] The adjustment structure also includes a worm gear 9, which is located inside the first mounting groove 7. The worm gear 9 is fixedly connected to the outside of the first bidirectional screw 8. A worm 10 is meshed with the outside of the worm gear 9. The top end of the worm 10 passes through the top end of the inside of the first mounting groove 7 and is rotatably connected to the maintenance platform 3. A throttle is installed on the top end of the worm 10.

[0027] If the expansion station 13 is too far from the maintenance platform 3, it may be unsafe. Therefore, the following improvements are made:

[0028] Both extension platforms 13 are fixedly connected to the bottom of T-shaped support frames 18, and both T-shaped support frames 18 are fixedly connected to the bottom of cross rods 19. The bottom of the cross rods 19 is provided with multiple support wheels 20, which are in contact with the surface of the sliding mechanism 2. Both sides of the base plate 5 are provided with cross grooves 21, and the side walls of the cross rods 19 are set inside the cross grooves 21 and are slidably connected to the base plate 5. A transmission structure is provided between the two cross rods 19.

[0029] The transmission structure includes a second mounting groove 22, which is located on the top of the base plate 5. A second bidirectional screw 23 passes through the second mounting groove 22. Both ends of the second bidirectional screw 23 pass through the groove wall of the second mounting groove 22 and extend into the two cross grooves 21. The second bidirectional screw 23 is rotatably connected to the second mounting groove 22 of the base plate 5. A second threaded groove is provided on one side of each of the two cross rods 19. Both ends of the second bidirectional screw 23 are respectively located in the two second threaded grooves and are threadedly connected to the two cross rods 19.

[0030] The transmission structure also includes a second sprocket 12, which is located inside the second mounting groove 22 and is fixedly connected to the outside of the second bidirectional screw 23. A first sprocket 11 is provided above the second sprocket 12 and is fixedly connected to the outside of the first bidirectional screw 8. The second sprocket 12 and the first sprocket 11 are connected by a chain drive. A through hole 70 is formed at the bottom of the first mounting groove 7, and the chain passes through the through hole 70.

[0031] Thus, when the throttle drives the worm gear 10, the first bidirectional screw 8 and the first sprocket 11 also rotate. Through the transmission of the first sprocket 11 and the second sprocket 12, the second bidirectional screw 23 rotates synchronously.

[0032] For the technology of ladder equipment 1, sliding mechanism 2, bracket 4, lifting mechanism 17 and hoisting component 16, the scheme in the gantry crane maintenance tool with announcement number CN220886949U is adopted.

[0033] In this article, a bidirectional screw refers to a screw whose threads at both ends rotate in opposite directions.

[0034] Its working principle is as follows:

[0035] Personnel standing on maintenance platform 3 can turn the throttle, worm gear 10 meshes with worm wheel 9, worm wheel 9 drives the first bidirectional screw 8 to rotate, the first bidirectional screw 8 is threadedly connected to two extension platforms 13, the two extension platforms 13 respectively drive the two guardrails 14 to move in opposite directions, making it convenient for personnel to operate the unfolding of the two extension platforms 13, and the extension platforms have more space.

[0036] With the T-shaped support frame 18 in place, during the aforementioned deployment, the two extension platforms 13 drive the two T-shaped support frames 18 to adjust in opposite directions. The two extension platforms 13 slide in the two sliding cavities 6 respectively. Specifically, when the first sprocket 11 rotates, the first sprocket 11 and the second sprocket 12 are driven by a chain. The second sprocket 12 drives the second bidirectional screw 23 to rotate. The second bidirectional screw 23 is threadedly connected to the two cross rods 19. The two cross rods 19 slide in the two cross grooves 21. The two cross rods 19 move together with the two T-shaped support frames 18. The two cross rods 19 drive multiple support wheels 20 to roll on the sliding mechanism 2. Therefore, by setting up the two T-shaped support frames 18, the two cross rods 19 and the multiple support wheels 20, the stability of the two extension platforms 13 during deployment can be improved, so that personnel can work with peace of mind when standing on the extension platforms 13.

[0037] Features of this application:

[0038] 1. In this application, a chain drive is used between the first sprocket and the second sprocket. The second sprocket drives the second bidirectional screw to rotate. The second bidirectional screw is threadedly connected to two cross rods. The two cross rods slide in two cross grooves. The two cross rods move together with the two T-shaped support frames. The two cross rods drive multiple support wheels to roll on the sliding mechanism. Therefore, the stability of the two extension platforms can be improved by setting up two T-shaped support frames, two cross rods and multiple support wheels.

[0039] 2. This application allows personnel to stand on the maintenance platform and turn the throttle, which engages with the worm gear and worm wheel. The worm wheel drives the first bidirectional screw to rotate, and the first bidirectional screw is threadedly connected to two extension platforms. The two extension platforms drive the two guardrails to move in opposite directions, making it convenient for personnel to operate the expansion of the two extension platforms.

[0040] For other details, please refer to the existing technology.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A maintenance tool for a bridge gantry crane, comprising a ladder device (1) and a sliding mechanism (2) disposed on its surface, wherein a base plate (5) is provided on the top of the sliding mechanism (2), and multiple supports (4) are fixedly connected to the outer side of the base plate (5), the multiple supports (4) are all fixed to the top of the sliding mechanism (2), a maintenance platform (3) is fixedly connected between the multiple supports (4), a lifting guardrail (15) is provided on the top of the maintenance platform (3), a lifting mechanism (17) is provided between the lifting guardrail (15) and the maintenance platform (3), and a hoisting component (16) is provided on the top of the lifting guardrail (15), characterized in that: The maintenance platform (3) is provided with an extension platform (13) on both sides, and a sliding cavity (6) is provided on both sides of the maintenance platform (3). The extension platform (13) is located inside the sliding cavity (6) and can slide within the sliding cavity (6). An adjustment structure is provided between the two extension platforms (13), which is used to drive the extension platform (13) to slide on the maintenance platform (3).

2. The bridge crane maintenance tool as described in claim 1, characterized in that: The top of the extension platform (13) is fixedly connected to a guardrail (14). The guardrail (14) is respectively set inside the two track grooves (60) and slidably connected to the maintenance platform (3). The top of the sliding cavity (6) is formed with a track groove (60). A part of the guardrail (14) is located in the track groove (60). When the extension platform (13) slides in the sliding cavity (6), the guardrail (14) also slides in the track groove (60).

3. The bridge crane maintenance tool as described in claim 2, characterized in that: The adjustment structure includes a first mounting groove (7), inside which is provided a first bidirectional screw (8). The two ends of the first bidirectional screw (8) pass through the groove wall of the first mounting groove (7) and extend into the two sliding cavities (6). The first bidirectional screw (8) is rotatably connected to the groove wall of the first mounting groove (7) of the maintenance platform (3). The two expansion platforms (13) are provided with first threaded grooves on opposite sides. The two ends of the first bidirectional screw (8) are respectively set in the two first threaded grooves and threadedly connected to the two expansion platforms (13).

4. The bridge crane maintenance tool as described in claim 3, characterized in that: The adjustment structure also includes a worm gear (9), which is located inside the first mounting groove (7). The worm gear (9) is fixedly connected to the outside of the first bidirectional screw (8). A worm (10) is meshed with the outside of the worm gear (9). The top end of the worm (10) passes through the top end of the first mounting groove (7) and is rotatably connected to the maintenance platform (3). A throttle is installed on the top end of the worm (10).

5. The bridge crane maintenance tool as described in claim 4, characterized in that: Two extension platforms (13) are fixedly connected to T-shaped support frames (18) at the bottom. Two T-shaped support frames (18) are fixedly connected to cross rods (19) at the bottom. Multiple support wheels (20) are provided at the bottom of the cross rods (19). The support wheels (20) are in contact with the surface of the sliding mechanism (2). Cross grooves (21) are provided on both sides of the base plate (5). The side wall of the cross rod (19) is set inside the cross groove (21) and is slidably connected to the base plate (5). A transmission structure is provided between the two cross rods (19). The transmission structure includes a second mounting groove (22), which is located on the top of the base plate (5). A second bidirectional screw (23) is installed inside the second mounting groove (22). The two ends of the second bidirectional screw (23) pass through the groove wall of the second mounting groove (22) and extend into the two cross grooves (21). The second bidirectional screw (23) is rotatably connected to the second mounting groove (22) of the base plate (5). A second threaded groove is provided on the opposite side of the two cross rods (19). The two ends of the second bidirectional screw (23) are respectively located in the two second threaded grooves and are threadedly connected to the two cross rods (19). The transmission structure also includes a second sprocket (12), which is located inside the second mounting groove (22). The second sprocket (12) is fixedly connected to the outside of the second bidirectional screw (23). A first sprocket (11) is provided above the second sprocket (12). The first sprocket (11) is fixedly connected to the outside of the first bidirectional screw (8). The second sprocket (12) and the first sprocket (11) are connected by a chain drive. A through hole (70) is formed at the bottom of the first mounting groove (7), and the chain passes through the through hole (70).

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