A safety inspection device for elevator cranes

Abstract

This utility model discloses a safety inspection device for elevator cranes, specifically relating to the field of elevator crane maintenance technology. It includes a support assembly, a detection assembly installed within the inner cavity of the support assembly, a traction assembly slidably connected to the inner cavity of the support assembly, a transmission assembly installed within the inner cavity of the support assembly, and a drive assembly installed on the upper part of the detection assembly. This safety inspection device for elevator cranes, through its designed detection and traction assemblies, enables the uniform speed operation of the traction wire rope. The detector can perform real-time scanning of the entire length and circumference of the wire rope, covering defects such as wear, broken wires, corrosion, and deformation on the surface and inside of the rope, avoiding blind spots caused by manual visual inspection or fixed-point inspection. The traction inspection is based on non-destructive technologies such as electromagnetic and ultrasonic sensors, eliminating the need to disassemble the wire rope or interrupt equipment operation, thus avoiding downtime losses due to inspection, while not affecting the mechanical properties and service life of the wire rope.

Description

Technical Field

[0001] This utility model relates to the field of elevator crane maintenance technology, and in particular to a safety testing device for elevator cranes. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. It is also known as an overhead crane, gantry crane, or hoist. Some lifting equipment operates intermittently, meaning that the mechanisms for material handling, transport, and unloading work alternately within a work cycle. Cranes are becoming increasingly widespread in the market. The top of an elevator car interacts with the crane via wire ropes and guide wheels to raise and lower the car. The types of wire ropes used with cranes include phosphated coated wire ropes, galvanized wire ropes, and bright wire ropes. Wire ropes wear down over time, leading to accidents; therefore, wire rope inspection is crucial.

[0003] When using existing equipment, elevator cranes use wire ropes of various specifications, including large diameter, multi-strand, and irregular structure types. Traditional testing equipment often cannot adapt to ropes of different diameters, strand numbers, and structures, resulting in a limited testing range. Therefore, we propose a safety testing device for elevator cranes to solve the above problems. Utility Model Content

[0004] The main objective of this invention is to provide a safety testing device for elevator cranes, which can effectively solve the problems mentioned above.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A safety detection device for elevator cranes includes a support assembly, a detection assembly installed in the inner cavity of the support assembly, a traction assembly slidably connected to the inner cavity of the support assembly, a transmission assembly installed in the inner cavity of the support assembly, and a drive assembly installed on the upper part of the detection assembly.

[0006] Preferably, the support assembly includes a housing, with support legs fixedly connected to the four corners of the lower end of the housing, and two air blowers installed inside the housing cavity.

[0007] Preferably, the detection component includes a first fixing plate, a second fixing plate is fixedly connected to the lower end of the first fixing plate, and a detector is installed on the inner surface of the second fixing plate.

[0008] Preferably, the traction assembly includes a sliding rod, all four sliding rods being slidably connected to the inner cavity of the outer casing, a fixed shell being installed at the end of each of the four sliding rods near the center, a spring being installed at the end of each of the four fixed shells away from the center, a traction wheel being installed in the inner cavity of each of the four fixed shells, and a pulley being fixedly connected to the upper end of each of the four traction wheels via a shaft.

[0009] Preferably, the transmission assembly includes two sliding rods, the outer surfaces of which are slidably connected to the inner surface of the fixed plate, a fixed shell is installed at the far ends of the two sliding rods, a spring is installed at the far ends of the two fixed shells, a pulley is installed in the inner cavity of the two fixed shells, a belt is wound around the outer surfaces of the two pulleys located in the same part and the outer surfaces of the pulleys, and a pulley is fixedly connected to the upper end of the two pulleys via a shaft.

[0010] Preferably, the drive assembly includes a fixing frame, which is installed on the upper end of the fixing plate 1. A motor is installed in the inner cavity of the fixing frame. Two pulleys 4 are installed on the upper end of the fixing plate 1. A belt 2 is wound around the outer surfaces of the two pulleys 4 and the outer surfaces of the two pulleys 3. A fixing shell 3 is installed in the inner cavity of the outer shell. Two springs 3 are installed in the inner cavity of the fixing shell 3. A sliding plate is installed at the front end of the two springs 3.

[0011] Preferably, the lower ends of the two pulleys are rotatably connected to the upper ends of the two fixed shells, and the lower end of the sliding plate is rotatably connected to the upper end of the pulley located at the rear.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This device, through its designed detection and traction components, enables the wire rope to run at a uniform speed. The detector can perform real-time scanning of the entire length and circumference of the wire rope, covering defects such as wear, broken wires, corrosion, and deformation on the surface and inside of the rope. This avoids blind spots caused by manual visual inspection or fixed-point inspection. The traction detection is based on non-destructive technologies such as electromagnetic and ultrasonic technologies, which do not require disassembling the wire rope or interrupting equipment operation, thus avoiding downtime losses caused by detection, while not affecting the mechanical properties and service life of the wire rope.

[0013] 2. This device, through its designed transmission and drive components, can adapt to wire ropes of different diameters, including large-diameter wire ropes used in elevators and cranes, and even multi-strand and irregularly shaped wire ropes. The transmission and drive components can be adjusted to adapt to ropes of different diameters, strand numbers, and structures, meeting the testing needs of various equipment such as elevators, port cranes, construction tower cranes, and bridge cranes. This avoids testing blind spots caused by differences in equipment specifications, allowing for multiple uses and significantly reducing users' procurement and maintenance costs. Furthermore, when users upgrade their equipment by replacing wire ropes with larger or smaller diameter ones, there is no need to replace the testing equipment simultaneously; it can continue to be used simply by adjusting the parameters, extending the equipment's technical lifespan and reducing resource waste. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective; Figure 3 This is a partial cross-sectional view of the structure of this utility model; Figure 4 This is a partial structural cross-sectional view of the present invention from another perspective; Figure 5 For the present utility model Figure 3 Enlarged view of point A in the middle; Figure 6 For the present utility model Figure 4 Enlarged view of point B in the middle; Figure 7 For the present utility model Figure 4 Enlarged diagram of point C in the middle.

[0015] In the diagram: 1. Support assembly; 2. Detection assembly; 3. Traction assembly; 4. Transmission assembly; 5. Drive assembly; 11. Housing; 12. Support leg; 13. Air blower; 21. Fixing plate one; 22. Fixing plate two; 23. Detector; 31. Sliding rod one; 32. Fixing housing one; 33. Spring one; 34. Traction wheel; 35. Pulley one; 41. Sliding rod two; 42. Fixing housing two; 43. Spring two; 44. Pulley two; 45. Belt one; 46. Pulley three; 51. Fixing frame; 52. Motor; 53. Pulley four; 54. Belt two; 55. Fixing housing three; 56. Sliding plate; 57. Spring three. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Example 1, as Figure 1As shown, a safety detection device for elevator cranes includes a support assembly 1, a detection assembly 2 installed in the inner cavity of the support assembly 1, a traction assembly 3 slidably connected to the inner cavity of the support assembly 1, a transmission assembly 4 installed in the inner cavity of the support assembly 1, and a drive assembly 5 installed on the upper part of the detection assembly 2.

[0018] When implementing this solution, the operator first connects the negative pressure machine to the support assembly 1. Then, the operator inserts the wire rope into the support assembly 1. At this time, the operator starts the drive assembly 5 to drive the transmission assembly 4 and the traction assembly 3 to rotate, thereby allowing the traction assembly 3 to pull the wire rope and prevent the wire rope from deviating during movement. When the wire rope passes through the support assembly 1, the operator starts the fan to pull the wire rope to prevent excessive dust on the wire rope from causing detection errors. At the same time, when the wire rope passes through the detection assembly 2, the detection assembly 2 will detect the wire rope. Meanwhile, when it is necessary to test wire ropes of different sizes, the operator first puts the wire rope into the support component 1. At this time, the traction component 3 will drive the wire rope to move. In turn, wire ropes of different diameters will cause the traction component 3, the transmission component 4 and the drive component 5 to stretch or contract, thereby realizing the testing of wire ropes of different diameters.

[0019] Specifically, in order to pull the inspection wire rope, such as Figure 2 As shown, in this solution, the support component 1 includes a housing 11, and support legs 12 are fixedly connected to the four corners of the lower end of the housing 11. Two air blowers 13 are installed in the inner cavity of the housing 11.

[0020] For further details, please refer to [link / reference]. Figure 4 The detection component 2 includes a first fixing plate 21, a second fixing plate 22 fixedly connected to the lower end of the first fixing plate 21, and a detector 23 installed on the inner surface of the second fixing plate 22.

[0021] For further details, please refer to [link / reference]. Figure 3 and Figure 5 The traction assembly 3 includes four sliding rods 31, which are slidably connected to the inner cavity of the outer shell 11. A fixed shell 32 is installed at the end of each of the four sliding rods 31 near the center. A spring 33 is installed at the end of each of the four fixed shells 32 away from the center. Traction wheels 34 are installed in the inner cavity of each of the four fixed shells 32. A belt pulley 35 is fixedly connected to the upper end of each of the four traction wheels 34 through a shaft.

[0022] In implementing this solution, the operator first connects the negative pressure machine to the blower pipe 13. Then, the operator inserts the steel wire rope into the outer casing 11. At this time, the operator starts the motor 52 to drive the pulley 4 53, belt 2 54, pulley 3 46, pulley 2 44, belt 1 45, pulley 1 35 and traction wheel 34 to rotate, thereby allowing the traction wheel 34 to pull the steel wire rope to prevent the steel wire rope from deviating during movement. When the steel wire rope passes through the blower pipe 13, the operator starts the fan to pull the steel wire rope to prevent excessive dust on the steel wire rope from causing detection errors. At the same time, when the steel wire rope passes through the detector 23, the detector 23 will detect the steel wire rope.

[0023] Example 2 is based on Example 1, in which steel wire ropes of different diameters are used for traction.

[0024] Specifically, in order to allow the use of steel wire ropes of different diameters for traction, such as Figure 3 and Figure 5 As shown, in this scheme, the transmission component 4 includes two sliding rods 41. The outer surfaces of the two sliding rods 41 are slidably connected to the inner surface of the fixed plate 21. Fixed housings 42 are installed at the ends of the two sliding rods 41 that are far apart from each other. Springs 43 are installed at the ends of the two fixed housings 42 that are far apart from each other. Pulleys 44 are installed in the inner cavities of the two fixed housings 42. The outer surfaces of the two pulleys 35 and the outer surfaces of the pulleys 44 located in the same part are connected by belts 45. Pulleys 46 are fixedly connected to the upper ends of the two pulleys 44 by shafts.

[0025] For further details, please refer to [link / reference]. Figure 3 , Figure 6 and Figure 7 The drive assembly 5 includes a fixed frame 51, which is mounted on the upper end of the fixed plate 21. A motor 52 is installed inside the fixed frame 51. Two pulleys 53 are mounted on the upper end of the fixed plate 21. A belt 54 is wound around the outer surfaces of the two pulleys 53 and the outer surfaces of the two pulleys 46. A fixed shell 55 is installed inside the outer shell 11. Two springs 57 are installed inside the fixed shell 55. A sliding plate 56 is installed at the front end of the two springs 57.

[0026] For further details, please refer to [link / reference]. Figure 3 and Figure 5 The lower ends of the two pulleys 46 are rotatably connected to the upper ends of the two fixed shells 42 respectively, and the lower end of the sliding plate 56 is rotatably connected to the upper end of the pulley 53 located at the rear.

[0027] When implementing this solution, if it is necessary to test wire ropes of different sizes, the operator first puts the wire rope into the outer casing 11. At this time, the traction wheel 34 will drive the wire rope to move. As a result, the wire ropes of different diameters will cause the spring 1 33, spring 2 43 and sliding plate 56 to stretch or contract. This will cause the sliding rod 1 31, fixed casing 1 32, fixed casing 2 42, spring 2 43 and spring 3 57 to drive the traction wheel 34, pulley 1 35, pulley 2 44, pulley 3 46 and pulley 4 53 located at the rear to move. This allows the traction wheel 34 to pull wire ropes of different diameters, while also keeping belt 1 45 and belt 2 54 under tension at all times, thus achieving the effect of testing wire ropes of different diameters.

[0028] In summary, the implementation process of this utility model is as follows: The operator first connects the negative pressure machine to the blower pipe 13, then inserts the steel wire rope into the outer casing 11. At this time, the operator starts the motor 52 to drive the pulley 4 53, belt 2 54, pulley 3 46, pulley 2 44, belt 1 45, pulley 1 35 and traction wheel 34 to rotate, thereby allowing the traction wheel 34 to pull the steel wire rope to prevent the steel wire rope from deviating during movement. When the steel wire rope passes through the blower pipe 13, the operator starts the fan to blow the steel wire rope to prevent excessive dust on the steel wire rope from causing detection errors. At the same time, when the steel wire rope passes through the detector 23, the detector 23 will detect the steel wire rope. Meanwhile, when it is necessary to test wire ropes of different sizes, the operator first puts the wire rope into the outer casing 11. At this time, the traction wheel 34 will drive the wire rope to move. As a result, the wire ropes of different diameters will cause the spring 1 33, spring 2 43 and sliding plate 56 to stretch or contract. This will cause the sliding rod 1 31, fixed casing 1 32, fixed casing 2 42, spring 2 43 and spring 3 57 to drive the traction wheel 34, pulley 1 35, pulley 2 44, pulley 3 46 and pulley 4 53 located at the rear to move. This allows the traction wheel 34 to pull wire ropes of different diameters, and at the same time, it can keep the belt 1 45 and belt 2 54 in a state of tension, thereby achieving the effect of testing wire ropes of different diameters.

[0029] It should be noted that the specific installation method, circuit connection method, and control method of the motor 52 and detector 23 used in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A safety inspection device for elevator cranes, comprising a support assembly (1), characterized in that: The inner cavity of the support component (1) is equipped with a detection component (2), the inner cavity of the support component (1) is slidably connected with a traction component (3), the inner cavity of the support component (1) is equipped with a transmission component (4), and the upper part of the detection component (2) is equipped with a drive component (5).

2. The safety detection equipment for elevator cranes according to claim 1, characterized in that: The support assembly (1) includes a housing (11), and support legs (12) are fixedly connected to the four corners of the lower end of the housing (11). Two air blowers (13) are installed in the inner cavity of the housing (11).

3. The safety detection equipment for elevator cranes according to claim 2, characterized in that: The detection component (2) includes a first fixing plate (21), a second fixing plate (22) is fixedly connected to the lower end of the first fixing plate (21), and a detector (23) is installed on the inner surface of the second fixing plate (22).

4. The safety detection equipment for elevator cranes according to claim 3, characterized in that: The traction assembly (3) includes a sliding rod (31), all four sliding rods (31) are slidably connected to the inner cavity of the outer shell (11), a fixed shell (32) is installed at the end of each of the four sliding rods (31) near the center, a spring (33) is installed at the end of each of the four fixed shells (32) away from the center, a traction wheel (34) is installed in the inner cavity of each of the four fixed shells (32), and a pulley (35) is fixedly connected to the upper end of each of the four traction wheels (34) through a shaft.

5. A safety inspection device for elevator cranes according to claim 4, characterized in that: The transmission assembly (4) includes two sliding rods (41). The outer surfaces of the two sliding rods (41) are slidably connected to the inner surface of the fixed plate (21). Fixed shells (42) are installed at the ends of the two sliding rods (41) that are far apart from each other. Springs (43) are installed at the ends of the two fixed shells (42) that are far apart from each other. Pulleys (44) are installed in the inner cavities of the two fixed shells (42). Belts (45) are wound around the outer surfaces of the two pulleys (35) and the pulleys (44) located in the same part. Pulleys (46) are fixedly connected to the upper ends of the two pulleys (44) through shafts.

6. The safety detection equipment for elevator cranes according to claim 5, characterized in that: The drive assembly (5) includes a fixed frame (51), which is mounted on the upper end of the fixed plate (21). A motor (52) is installed in the inner cavity of the fixed frame (51). Two pulleys (53) are installed on the upper end of the fixed plate (21). A belt (54) is wound around the outer surfaces of the two pulleys (53) and the outer surfaces of the two pulleys (46). A fixed shell (55) is installed in the inner cavity of the outer shell (11). Two springs (57) are installed in the inner cavity of the fixed shell (55). A sliding plate (56) is installed at the front end of the two springs (57).

7. A safety inspection device for elevator cranes according to claim 6, characterized in that: The lower ends of the two pulleys (46) are rotatably connected to the upper ends of the two fixed shells (42), and the lower end of the sliding plate (56) is rotatably connected to the upper end of the pulley (53) located at the rear.

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