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CN-224212297-U - Anti-falling protection device for electric hoist of crane

CN224212297UCN 224212297 UCN224212297 UCN 224212297UCN-224212297-U

Abstract

The utility model relates to the technical field of crane electric hoists and discloses a falling protection device for a crane electric hoist, which comprises a bottom plate, wherein an adjusting structure is arranged in the bottom plate, the bottom end of the bottom plate is fixedly connected with a fixed plate, and a sliding structure is arranged in the fixed plate. According to the utility model, the first driving motor is started to drive the first screw rod to rotate, at the moment, the movable blocks at the two ends can move in opposite directions along the outer surface of the first screw rod, and the connecting plate at the bottom end and the sleeving plate are driven to synchronously move until the two ends of the electric hoist are sleeved by the two groups of sleeving plates, and the first driving motor is stopped.

Inventors

  • HU LINZHONG
  • YU QI

Assignees

  • 河南省黄河防爆起重机有限公司

Dates

Publication Date
20260508
Application Date
20250516

Claims (6)

  1. 1. The utility model provides a hoist electric block protection device that falls which characterized in that includes: The device comprises a bottom plate (1), wherein an adjusting structure (2) is arranged in the bottom plate (1), a fixed plate (3) is fixedly connected to the bottom end of the bottom plate (1), and a sliding structure (4) is arranged in the fixed plate (3); The adjusting structure (2) comprises a movable groove (21) and a movable block (24), and the movable groove (21) is arranged in the bottom plate (1); The sliding structure (4) comprises a moving groove (41), and the moving groove (41) is formed in the fixing plate (3).
  2. 2. The anti-falling protection device for the electric hoist of the crane according to claim 1, wherein the adjusting structure (2) further comprises a first driving motor (22), the first driving motor (22) is arranged at one end of the outer surface of the adjusting structure (2), an output shaft end bearing of the first driving motor (22) is connected with a first screw rod (23), one end of the first screw rod (23) is fixedly connected with the inner wall of the movable groove (21) through the bearing, two ends of the first screw rod (23) are connected with movable blocks (24) in a threaded manner, the bottom ends of the movable blocks (24) are fixedly connected with connecting plates (25), the bottom ends of the connecting plates (25) are fixedly connected with sleeved plates (26), and sleeved grooves (27) are formed in the sleeved plates (26).
  3. 3. The anti-falling protection device for the electric hoist of the crane, as set forth in claim 2, is characterized in that the external threads at the two ends of the first screw rod (23) are of positive and negative tooth design, and the internal threads of the two groups of movable blocks (24) sleeved on the external surface part of the first screw rod (23) are opposite to each other.
  4. 4. The fall protection device for an electric hoist of a crane according to claim 1, characterized in that the inner dimension of the movable groove (21) is adapted to the outer dimension of the movable block (24).
  5. 5. The anti-falling protection device for the electric hoist of the crane according to claim 1, wherein the sliding structure (4) further comprises a second driving motor (42), the second driving motor (42) is installed at one end of the outer surface of the fixed plate (3), an output shaft end bearing of the second driving motor (42) is connected with a second screw rod (43), one end of the second screw rod (43) is fixedly connected with the inner wall of the moving groove (41) through a bearing, two ends of the second screw rod (43) are respectively and fixedly connected with a moving block (44), two end outer surfaces of the moving blocks (44) are fixedly connected with an extending plate (45), one side of the bottom end surface of the extending plate (45) is fixedly connected with a mounting plate (46), and one side of the mounting plate (46) is provided with a roller (47) through a rotating shaft.
  6. 6. The fall protection device for the electric hoist of the crane according to claim 5, wherein the external threads at both ends of the second screw rod (43) are of positive and negative tooth design, and the internal threads of the two groups of moving blocks (44) sleeved on the external surface part of the second screw rod (43) are opposite to each other.

Description

Anti-falling protection device for electric hoist of crane Technical Field The utility model relates to the technical field of crane electric hoists, in particular to a falling protection device for a crane electric hoist. Background With the rapid development of the industries such as large-scale infrastructure construction, energy industry, real estate industry, petrochemical industry, shipbuilding industry and the like in China in recent years, the development of heavy machinery manufacturing industry such as cranes in China is greatly driven, the types of the cranes are more, such as single-beam bridge cranes, double-beam bridge cranes, portal cranes and the like, the bottoms of main beams of the cranes are connected with electric hoists in a sliding mode, steel ropes of the electric hoists are vertically downward and provided with hooks, goods to be transported are hung, and the electric hoists and the cranes are controlled to move through an operation panel or a controller, so that the goods are moved to a destination. At present, in the use of the electric hoist anti-falling protection device in the prior art, the electric hoist anti-falling protection device is usually mutually matched with the electric hoist, and a single anti-falling device corresponds to one type of electric hoist, so that the electric hoist with different sizes is inconvenient to carry out anti-falling protection according to different use conditions in the use process, the application range of the electric hoist anti-falling protection device is limited, the applicability of the electric hoist anti-falling protection device is reduced to a certain extent, the anti-falling protection device is usually connected with the electric hoist in the use process, and finally the anti-falling protection device is connected with a crane beam, so that only a single stress point exists between the beam and the electric hoist, the anti-falling effect is poor, and the electric hoist is possibly involved in the situation of falling together when the anti-falling protection device has special situations, so that the practicability of the electric hoist anti-falling protection device for the crane is highly needed to solve the problems. Disclosure of utility model In order to overcome the defects in the prior art, the utility model provides a falling protection device for an electric hoist of a crane, which aims to solve the problems in the prior art. The utility model provides a technical scheme that an anti-falling protection device for an electric hoist of a crane comprises the following components: The bottom plate is internally provided with an adjusting structure, the bottom end of the bottom plate is fixedly connected with a fixed plate, and the inside of the fixed plate is provided with a sliding structure; The adjusting structure comprises a movable groove and a movable block, and the movable groove is formed in the bottom plate; The sliding structure comprises a moving groove, and the moving groove is formed in the fixing plate. Preferably, the adjusting structure further comprises a first driving motor, the first driving motor is arranged at one end of the outer surface of the adjusting structure, an output shaft end bearing of the first driving motor is connected with a first screw rod, one end of the first screw rod is fixedly connected with the inner wall of the movable groove through a bearing, two ends of the first screw rod are fixedly connected with movable blocks in threaded mode, the bottom ends of the movable blocks are fixedly connected with connecting plates, the bottom ends of the connecting plates are fixedly connected with sleeve-type plates, sleeve-type plates are sleeved with sleeve-type plates, grooves are formed in the sleeve-type plates, and the design can adjust the moving distance of the two groups of sleeve-type plates. Preferably, the external threads at two ends of the first screw rod are of positive and negative tooth design, and the internal threads of the two groups of movable blocks sleeved on the external surface part of the first screw rod are opposite to each other, so that the two groups of sleeved plates can synchronously move in opposite directions. Preferably, the inner dimension of the movable groove is matched with the outer dimension of the movable block, and the design can enable the sheathing plate to be more stable when moving. Preferably, the sliding structure further comprises a second driving motor, the second driving motor is arranged at one end of the outer surface of the fixed plate, an output shaft end bearing of the second driving motor is connected with a second screw rod, one end of the second screw rod is fixedly connected with the inner wall of the movable groove through a bearing, two ends of the second screw rod are fixedly connected with movable blocks in a threaded manner, two end outer surface fixing of each movable block is connected with an extension plate, one side of the bo