Derailing and falling prevention safety device for crane lifting trolley
By designing anti-derailment and anti-fall safety devices on the crane hoisting trolley, including anti-drum fall brackets, rail sweepers, and safety hooks, the problem of the hoisting trolley falling under extreme conditions is solved, and safety is improved.
Patent Information
- Application Number
- CN202520793590.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-24
AI Technical Summary
Crane hoisting trolleys are prone to falling off the main beam in the event of hurricanes, earthquakes, or wire rope breakage, leading to serious accidents.
A derailment and fall prevention safety device was designed, including components such as an anti-drum fall bracket, a rail sweeper, and a safety hook. These components prevent the hoisting trolley from separating from the track, ensuring that the hoisting trolley does not derail and fall in extreme circumstances.
It effectively prevents the hoisting trolley from falling under extreme conditions, improves the safety factor of the crane hoisting trolley, and avoids derailment accidents caused by rebound force.
Smart Images
Figure CN223950628U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hoisting machinery technical field, concretely relates to a kind of anti-derailing falling safety device for crane hoisting trolley. BACKGROUND
[0002] With the rapid development of large-scale infrastructure construction, energy industry, real estate industry, petrochemical industry and shipbuilding industry in China in recent years, it has greatly driven the development of crane and other heavy machinery manufacturing industry in China, and there are many types of cranes, such as single-beam bridge crane, double-beam bridge crane, gantry crane, etc. The electric hoist is connected to the bottom of the main beam of these cranes, the steel wire rope of the electric hoist is vertically downward and has a hook, the goods to be transported are hung, and the electric hoist and crane are controlled by the operation panel or controller to move the goods to the destination.
[0003] The crane is a kind of special equipment, and once an accident occurs, it will cause great economic and property losses, especially the hoisting trolley of the crane, which may cause great accidents in the case of falling.
[0004] The hoisting trolley of the crane may fall from the main beam in the case of hurricane, earthquake, sudden breakage of steel wire rope, etc. This situation will multiply the various losses caused by external reasons. The main beam and the upper cover plate on which the hoisting trolley travels have a certain elasticity. When the steel wire rope carrying heavy objects suddenly breaks, the hoisting trolley will be subjected to an upward rebound force, and at this time the hoisting trolley is easy to derail and fall from the main beam. SUMMARY
[0005] The purpose of the present application is to provide an anti-derailing falling safety device for crane hoisting trolley, which aims to at least solve one of the technical problems existing in the prior art.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:
[0007] An anti-derailing falling safety device for crane hoisting trolley, comprising a main beam, an upper cover plate connected to the upper part of the main beam, a track provided on the upper cover plate and a hoisting trolley running on the track, the hoisting trolley comprising a trolley frame, a drum and an anti-derailing falling assembly, the trolley frame is arranged on the track, the drum is directly supported at both ends of the trolley frame end beam on both sides of the trolley frame, the anti-derailing falling assembly is arranged on the hoisting trolley, and the anti-derailing falling assembly is used to prevent the hoisting trolley from separating from the track.
[0008] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0009] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0010] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0011] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0012] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0013] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0014] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0015] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0016] As a further scheme of the utility model: the anti-derailment falling assembly further includes a first rail sweeper, and the first rail sweeper is arranged at the end of the end beam on the two sides of the trolley frame.
[0017] The utility model has the advantages of:
[0018] The anti-derailment falling assembly of the utility model includes anti-winding drum falling support, No.1 rail sweeper, No.1 safety reverse hook, No.2 rail sweeper and No.2 safety reverse hook and the like, the anti-winding drum falling support prevents the winding drum from falling in the case of winding drum shaft or gear box fracture, the setting of No.1 rail sweeper prevents derailment in the walking of trolley frame, when the crane lifting trolley is ejected from the main beam in the case of hurricane, earthquake, sudden fracture of steel wire rope and the like, the right-angle hook will firmly hook the bottom of the upper cover plate, effectively preventing the crane lifting trolley from falling, No.2 rail sweeper can prevent crane derailment, and No.2 safety reverse hook prevents crane upward bouncing from causing derailment, the anti-derailment falling assembly of the utility model greatly improves the safety factor of the lifting trolley in the running process, avoids the situation that the lifting trolley falls from the main beam in the case of hurricane, earthquake, sudden fracture of steel wire rope and the like, and especially can avoid the upward rebound force on the lifting trolley when the steel wire rope carrying heavy objects suddenly breaks, causing the lifting trolley to derail and fall from the main beam. BRIEF DESCRIPTION OF DRAWINGS
[0019] The utility model will be further described in connection with the drawings.
[0020] Figure 1 is the front view structure schematic diagram of the utility model;
[0021] Figure 2 is the side view structure schematic diagram of the utility model;
[0022] Figure 3 is the bottom view structure schematic diagram of the utility model;
[0023] Figure 4 is the front view structure schematic diagram of the crane trolley group of the utility model;
[0024] Figure 5 is the side view structure schematic diagram of the crane trolley group of the utility model.
[0025] In the drawing: 1, main beam; 2, upper cover plate; 3, track; 4, lifting trolley; 41, trolley frame; 42, winding drum; 43, anti-winding drum falling support; 44, frame end beam; 45, No.1 rail sweeper; 46, No.1 safety reverse hook; 47, No.2 rail sweeper; 48, No.2 safety reverse hook; 5, crane trolley. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below. Apparently, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.
[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, a particular orientation configuration and an operation, therefore, it cannot be understood as a limitation of the present application.
[0028] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0029] Please refer to Figures 1-5 The present application provides a crane lifting trolley anti-derailment falling safety device, which comprises a main beam 1, an upper cover plate 2 connected to the upper part of the main beam 1, a track 3 arranged on the upper cover plate 2 and a lifting trolley 4 walking on the track 3. Please refer to Figure 1 The lifting trolley 4 in the present application comprises a trolley frame 41, a winding drum 42 and an anti-derailment falling assembly. The trolley frame 41 is arranged on the track 3, the winding drum 42 is directly supported at both ends on the trolley frame end beam 44 on both sides of the trolley frame 41, and the anti-derailment falling assembly is arranged on the lifting trolley 4. The anti-derailment falling assembly is used to prevent the lifting trolley 4 from separating from the track 3. By arranging the anti-derailment falling assembly, the situation that the lifting trolley 4 falls from the main beam 1 under the conditions of hurricane, earthquake, sudden breakage of the steel wire rope and the like can be avoided, and especially when the steel wire rope carrying heavy objects suddenly breaks, the lifting trolley 4 will be subjected to upward rebounding force, which can cause the lifting trolley 4 to derail and fall from the main beam 1.
[0030] Notably, the lifting mechanism of the lifting trolley 4 in the utility model is composed of a motor, a speed reducer, a brake, a winding drum 42, a lifting limiting device and an overload limiter, is designed integrally, adopts a three-point mounting form, the two ends of the winding drum 42 are directly supported on the frame end beams 44 on the two sides of the trolley frame 41, a hollow shaft type speed reducer is sleeved and connected on the shaft of the protruding winding drum 42, the input shaft base of the speed reducer is supported on the trolley frame 41 through positioning bolts, the fixing of the speed reducer and the torque balance are achieved. The lifting motor and the speed reducer adopt an elastic coupling, the lifting trolley 4 adopts a light and compact design, the lifting load is directly supported on the driving end beam of the trolley through the two ends of the winding drum 42, the trolley is clearly stressed, is compactly arranged, is low in noise, and the overall height and self weight are reduced.
[0031] Please refer to Figures 1-3 As shown in the figure, in the embodiment, the anti-derailing falling assembly comprises an anti-winding drum falling support 43, which is fixedly arranged in the inner side of the frame end beam 44 of the trolley frame 41, and the anti-winding drum falling support 43 is located directly below the end of the winding drum 42. Preferably, one anti-winding drum falling support 43 is arranged in the inner side of the frame end beam 44 on the two sides of the trolley frame 41. In the embodiment, the anti-winding drum falling support 43 is arranged as an I-shaped steel frame.
[0032] By arranging the anti-winding drum falling support 43, the winding drum 42 for lifting can be prevented from falling in the case of fracture of the shaft or the gear box of the winding drum 42.
[0033] Please refer to Figure 2 and Figure 3 As shown in the figure, in the embodiment, the anti-derailing falling assembly further comprises a first rail sweeper 45 arranged at the end of the frame end beam 44 on the two sides of the trolley frame 41. The two ends of the frame end beam 44 on the two sides of the trolley frame 41 are each provided with a first rail sweeper 45. The arrangement of the first rail sweeper 45 can prevent the trolley frame 41 from derailing during walking.
[0034] Please refer to Figure 1 As shown in the figure, in the embodiment, the anti-derailing falling assembly further comprises a first safety reverse hook 46, the upper end of the first safety reverse hook 46 is fixed to the bottom of the trolley frame 41, and the lower end of the first safety reverse hook 46 always runs below the lower part of the upper cover plate 2 of the main beam 1. The first safety reverse hook 46 is a straight hook, the upper end of the hook is fixedly connected to the bottom of the trolley frame 41 through bolts, the lower end of the hook extends to the bottom of the upper cover plate 2, and the lower end of the hook does not contact the bottom of the upper cover plate 2.
[0035] When the crane hoisting trolley 4 is ejected from the main beam 1 in the case of hurricane, earthquake, sudden breakage of the steel wire rope and the like, the hook-shaped hook firmly hooks the bottom of the upper cover plate 2, effectively preventing the crane hoisting trolley 4 from falling, and under the protection of the first rail sweeper 45 and the first safety reverse hook 46, the safety factor of the crane hoisting trolley 4 is greatly improved.
[0036] Further, referring to Figure 4 In the embodiment, the anti-derailing and falling assembly further comprises a second rail sweeper 47, which is arranged at the end of the crane trolley 5 and can prevent the crane from derailing.
[0037] Further, referring to Figure 5 In the embodiment, the anti-derailing and falling assembly further comprises a second safety reverse hook 48, which is fixed at the bottom of the crane trolley at the upper end and always runs at the lower part of the rail 3 at the lower end, preventing the crane from bouncing upward and causing derailment.
[0038] In summary, the utility model improves the structure of the hoisting trolley 4, so that the trolley is clearly stressed and arranged more compactly, and the overall height and self weight of the machine are reduced. Further, the anti-derailing and falling assembly is arranged, which comprises a winding drum falling support 43, a first rail sweeper 45, a first safety reverse hook 46, a second rail sweeper 47 and a second safety reverse hook 48, so that the safety factor of the hoisting trolley 4 during operation is greatly improved, and the hoisting trolley 4 is prevented from falling from the main beam 1 in the case of hurricane, earthquake, sudden breakage of the steel wire rope and the like. In particular, when the steel wire rope carrying heavy objects suddenly breaks, the hoisting trolley 4 will be subjected to upward rebounding force, which can cause the hoisting trolley 4 to derail and fall from the main beam 1.
[0039] The preferred embodiments of the utility model have been described in detail above, and should not be considered as limiting the scope of the utility model. Any equivalent changes and improvements made within the scope of the utility model application should still belong to the patent coverage of the utility model.
Claims
1. A derailment and falling safety device for a hoist trolley of a crane, comprising a main beam (1), an upper cover plate (2) connected to the upper part of the main beam (1), a track (3) arranged on the upper cover plate (2), and a hoist trolley (4) running on the track (3), characterized in that: The lifting trolley (4) comprises a trolley frame (41), a drum (42) and a derailment prevention falling assembly, the trolley frame (41) is arranged on the track (3), the drum (42) is directly supported at both ends of the trolley frame (41) on both sides of the frame end beam (44), the derailment prevention falling assembly is arranged on the lifting trolley (4), and the derailment prevention falling assembly is used for preventing the lifting trolley (4) from separating from the track (3).
2. The anti-derailing and falling safety device for a crane hoist trolley according to claim 1, characterized in that: The derailment prevention falling assembly comprises a drum falling prevention support (43), the drum falling prevention support (43) is fixedly arranged on the inner side of the frame end beam (44) of the trolley frame (41), and the drum falling prevention support (43) is located directly below the end of the drum (42).
3. The anti-derailing and falling safety device for a crane hoist trolley according to claim 2, characterized in that: The inner side of the frame end beam (44) on both sides of the trolley frame (41) is provided with one drum falling prevention support (43).
4. The anti-derailing and falling safety device for a crane hoist trolley according to claim 3, characterized in that: The drum falling prevention support (43) is an I-shaped steel frame.
5. The anti-derailing and falling safety device for a crane hoist trolley according to claim 2, characterized in that: The derailment prevention falling assembly further comprises a first rail sweeper (45), and the first rail sweeper (45) is arranged at the end of the frame end beam (44) on both sides of the trolley frame (41).
6. The anti-derailing and falling safety device for a crane hoist trolley according to claim 5, characterized in that: The two ends of the frame end beam (44) on both sides of the trolley frame (41) are provided with one first rail sweeper (45).
7. The anti-derailing and falling safety device for a crane hoist trolley according to claim 5, characterized in that: The derailment prevention falling assembly further comprises a first safety reverse hook (46), the upper end of the first safety reverse hook (46) is fixed to the bottom of the trolley frame (41), and the lower end of the first safety reverse hook (46) always runs below the lower part of the upper cover plate (2) of the main beam (1).
8. The anti-derailing and falling safety device for a crane hoist trolley according to claim 7, characterized in that: The first safety reverse hook (46) is a straight hook, the upper end of the hook is fixedly connected to the bottom of the trolley frame (41) through bolts, the lower end of the hook extends to the bottom of the upper cover plate (2), and the lower end of the hook does not contact the bottom of the upper cover plate (2).
9. The anti-derailing and falling safety device for a crane hoist trolley according to claim 7, characterized in that: The derailment prevention falling assembly further comprises a second rail sweeper (47), and the second rail sweeper (47) is arranged at the end of the crane trolley (5).
10. The anti-derailing and falling safety device for a crane hoist trolley according to claim 9, characterized in that: The derailment prevention falling assembly further comprises a second safety reverse hook (48), the upper end of the second safety reverse hook (48) is fixed to the bottom of the crane trolley, and the lower end of the second safety reverse hook (48) always runs below the lower part of the track (3).