Device for preventing steel wire rope of electric hoist from being separated from groove

Abstract

The utility model discloses a device for preventing a steel wire rope of an electric hoist from disengaging from a groove, and relates to the technical field of steel wire rope disengaging preventing devices. The device for preventing the steel wire rope of the electric hoist from being separated from the groove comprises an electric hoist barrel, the steel wire rope limiting assembly comprises a first driving motor, the output end of the first driving motor is fixedly connected with a steel wire rope reel, a spiral groove is formed in the surface of the steel wire rope reel, guide columns are rotationally connected into two guide column connecting blocks, the surfaces of the guide columns are sleeved with first rolling wheels, and the left sides of the first rolling wheels are fixedly connected with rubber rings. The steel wire rope is guided through sliding and rotating of the first rolling wheel on the surface of the guide column and the grooves in the surface of the steel wire rope reel and the grooves in the surface of the first rolling wheel, so that the steel wire rope is prevented from falling off from the steel wire rope reel when the steel wire rope is obliquely pulled and hoisted. The use safety of the electric hoist is improved; meanwhile, rubber rings and springs are arranged on the two sides of the first roller, and the service life of the steel wire rope and the guide wheel is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of wire rope anti-derailment devices, and in particular to an anti-derailment device for electric hoist wire ropes. Background Technology

[0002] Rope guide, also known as rope arranger, is an accessory of electric hoist and a component of the hoist hook lifting and lowering limit. It is a safety accessory that ensures the wire rope is neatly arranged on the drum to prevent it from becoming tangled, overlapping, or derailed, which could cause mechanical failures and damage to the electric hoist.

[0003] Currently, conventional rope guides have the following problems:

[0004] ① Ordinary rope guides can be damaged and cause wire injuries if pulled or suspended at a slight angle.

[0005] ② A damaged rope guide may also cause the hook lifting and lowering limit to fail, the hook to top, or the wire to fall off.

[0006] ③ In severe cases, it can cause damaged rope guides to fall and injure operators.

[0007] This utility model patent describes a device for preventing the wire rope of an electric hoist from slipping off the groove. To solve the above problems, a device consisting of a guide post and a U-shaped groove roller is designed and manufactured. Limiting plates are installed on the roller and guide post, and the device is then installed on one side of the electric hoist's rolling axis to replace the ordinary rope guide. Utility Model Content

[0008] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an anti-derailment device for electric hoist wire ropes, which can solve the problem that ordinary rope guides will be damaged and cause wires to be pinched if they are pulled or hoisted at an angle.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a device for preventing the wire rope of an electric hoist from slipping off the groove, comprising an electric hoist cylinder;

[0010] A wire rope limiting assembly is installed on the electric hoist drum. The wire rope limiting assembly includes a first drive motor, which is fixedly connected to the right end of the electric hoist drum. A wire rope drum is fixedly connected to the output end of the first drive motor, and the wire rope drum is rotatably connected to the electric hoist drum.

[0011] The surface of the wire rope drum is provided with spiral grooves, and the surface of the wire rope drum is wound with wire rope;

[0012] Two guide post connecting blocks are fixedly connected to the front end of the electric hoist drum. Guide posts are rotatably connected inside the two guide post connecting blocks. A first roller is sleeved on the surface of the guide post. Two annular grooves are opened on the surface of the first roller and two annular protrusions are fixedly connected. The annular protrusions on the surface of the first roller engage with the grooves on the surface of the wire rope drum.

[0013] A rubber ring is fixedly connected to the left side of the first roller, and a spring is fixedly connected inside the rubber ring. The rubber ring is circular.

[0014] Preferably, there are two rubber rings and two springs respectively symmetrically arranged on both sides of the first roller.

[0015] Preferably, a flame cut-off device is fixedly installed on the surface of the first drive motor, and a connecting rod is slidably connected to the front end of the electric hoist cylinder. Two limit levers are fixedly connected to the surface of the connecting rod, and the connecting rod is connected to the limit switch of the flame cut-off device.

[0016] Preferably, the wire rope has a hook connected to its surface, and the other end of the wire rope is fixedly connected to the outer shell of the electric hoist.

[0017] Preferably, a connecting block is fixedly connected to the upper end of the electric hoist cylinder, and connecting plates are respectively provided on the front and rear sides of the connecting block. Two fixing bolts are provided inside the connecting block, and the two connecting plates are fixed to the connecting block by the two fixing bolts.

[0018] Both connecting plates have two connecting shafts rotatably connected inside, and each of the four connecting shafts has a second roller fixedly connected to its surface.

[0019] Preferably, a second drive motor is fixedly connected to the surface of the front connecting plate, and the output end of the second drive motor is fixedly connected to the corresponding connecting shaft;

[0020] The surfaces of the two connecting shafts on the front side are fixedly connected to sprockets, and the surfaces of the two sprockets are connected to a chain for transmission.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This electric hoist wire rope anti-derailment device uses the sliding and rotation of the first roller on the surface of the guide column, and the grooves on the surface of the wire rope drum and the first roller to guide the wire rope. The wire rope drum limits the first roller, preventing the wire rope from falling off the drum when the wire rope is pulled at an angle, thus improving the safety of the electric hoist. Simultaneously, rubber rings and springs are installed on both sides of the first roller, with the wire rope acting as a protective pad. This effectively reduces direct contact between the first roller and the guide column connecting block when they collide, reducing wear. The springs absorb the impact force generated when the first roller collides with the guide column connecting block, reducing damage to the equipment caused by the impact. By reducing wear and impact, the service life of the wire rope and guide roller can be extended. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a schematic diagram of the structure of an anti-derailment device for a wire rope of an electric hoist according to the present invention;

[0025] Figure 2 This is a schematic diagram of the connecting rod of this utility model;

[0026] Figure 3 This is a schematic diagram of the second roller of this utility model;

[0027] Figure 4 This is a schematic diagram of the spring of this utility model.

[0028] Reference numerals in the attached drawings: 1. Electric hoist drum; 2. First drive motor; 3. Wire rope drum; 4. Guide post connecting block; 5. Guide post; 6. First roller; 7. Wire rope; 8. Hook; 9. Connecting block; 10. Connecting plate; 11. Fixing bolt; 12. Second drive motor; 13. Connecting shaft; 14. Second roller; 15. Chain; 16. Sprocket; 17. Rubber ring; 18. Spring; 19. Fire stop; 20. Connecting rod; 21. Limiting lever. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Please see Figure 1-4 This utility model provides a technical solution: an anti-derailment device for wire rope of an electric hoist, including an electric hoist cylinder 1 and a wire rope limiting assembly. The wire rope limiting assembly is disposed on the electric hoist cylinder 1 and includes a first drive motor 2, which is fixedly connected to the right end of the electric hoist cylinder 1. The output end of the first drive motor 2 is fixedly connected to a wire rope drum 3, which is rotatably connected to the electric hoist cylinder 1. The surface of the wire rope drum 3 is provided with a spiral groove. The surface is wound with steel wire rope 7. The front end of the electric hoist drum 1 is fixedly connected to two guide post connecting blocks 4. The two guide post connecting blocks 4 are rotatably connected to guide posts 5. The surface of the guide post 5 is fitted with a first roller 6. The surface of the first roller 6 has two annular grooves and two annular protrusions fixedly connected. The annular protrusions on the surface of the first roller 6 engage with the grooves on the surface of the steel wire rope drum 3. The left side of the first roller 6 is fixedly connected to a rubber ring 17. The inside of the rubber ring 17 is fixedly connected to a spring 18. The rubber ring 17 is circular.

[0034] Two rubber rings 17 and two springs 18 are symmetrically arranged on both sides of the first roller 6.

[0035] A flame cut-off device 19 is fixedly mounted on the surface of the first drive motor 2. A connecting rod 20 is slidably connected to the front end of the electric hoist cylinder 1. Two limit levers 21 are fixedly connected to the surface of the connecting rod 20. The connecting rod 20 is connected to the limit switch of the flame cut-off device 19.

[0036] The wire rope 7 has a hook 8 connected to its surface for transmission, and the other end of the wire rope 7 is fixedly connected to the outer shell of the electric hoist cylinder 1.

[0037] A connecting block 9 is fixedly connected to the upper end of the electric hoist cylinder 1. Connecting plates 10 are respectively provided on the front and rear sides of the connecting block 9. Two fixing bolts 11 are provided inside the connecting block 9. The two connecting plates 10 are fixed to the connecting block 9 by the two fixing bolts 11. Two connecting shafts 13 are rotatably connected inside the two connecting plates 10. Second rollers 14 are fixedly connected to the surfaces of the four connecting shafts 13.

[0038] A second drive motor 12 is fixedly connected to the surface of the front connecting plate 10. The output end of the second drive motor 12 is fixedly connected to the corresponding connecting shaft 13. A sprocket 16 is fixedly connected to the surface of the two front connecting shafts 13. A chain 15 is driven to the surface of the two sprockets 16.

[0039] When using this device, firstly, two connecting plates 10 are installed on the connecting block 9 using two fixing bolts 11, and then the two connecting plates 10 are installed on the I-beam guide rail, so that the electric hoist can move on the surface of the I-beam guide rail. Then, the second drive motor 12 is started to drive the connecting shaft 13 to rotate, the connecting shaft 13 drives the sprocket 16 to rotate, the sprocket 16 drives the chain 15 to rotate and drives the corresponding sprocket 16 and connecting shaft 13 to rotate, which in turn drives the corresponding second roller 14 to rotate, so as to facilitate the movement of the electric hoist on the surface of the I-beam guide rail.

[0040] This allows the electric hoist to easily reach different work locations without the need for additional equipment or complex installation processes. The sturdiness and stability of the I-beams provide reliable support for the electric hoist, ensuring its safe operation and facilitating its rapid movement to locations requiring lifting or handling, thereby improving overall work efficiency.

[0041] The first drive motor 2 is started to drive the wire rope drum 3 to rotate inside the electric hoist drum 1, which facilitates the rotation of the wire rope 7 on the surface of the wire rope drum 3, making it easy to adjust the length of the wire rope 7 and the height of the hook 8, and to facilitate the lifting of objects. Because the surface of the wire rope drum 3 has a spiral groove and the wire rope 7 is wound on the surface of the wire rope drum 3, the annular protrusion of the first roller 6 engages with the groove on the surface of the wire rope drum 3. During the rotation of the wire rope drum 3, the engagement of the protrusion and the groove facilitates the rotation and movement of the first roller 6 on the surface of the guide post 5. The groove on the surface of the wire rope drum 3 and the annular groove on the surface of the first roller 6 facilitate the guidance of the wire rope 7, preventing the wire rope 7 from falling off the groove on the surface of the wire rope drum 3 during use. If the wire rope falls off the groove, it is easy to pile up and squeeze on the wire rope drum 3, which will not only damage the wire rope itself, but may also damage the wire rope drum 3 or other components.

[0042] By preventing the wire rope from derailing, the service life of the wire rope and the wire rope drum 3 can be extended. The groove design on the surface of the wire rope drum 3 is to enable the wire rope to be arranged regularly, avoid tangling, winding or messy, reduce mutual friction and wear, and improve the efficiency of the wire rope.

[0043] When the first roller 6 is driven by the wire rope drum 3, it will rotate and slide on the surface of the guide post 5. When the first roller 6 moves to the leftmost or rightmost end of the guide post 5, it will contact the limiting plate 21 on the surface of the connecting rod 20 and squeeze the limiting plate 21, causing the limiting plate 21 to drive the connecting rod 20 to slide on the surface of the electric hoist drum 1. This causes the connecting rod 20 to activate the limit switch inside the fire cut-off device 19, which disconnects the power supply to the first drive motor 2 and stops the wire rope drum 3 from rotating. This prevents the first roller 6 from impacting the connecting blocks 4 of the guide posts on both sides and causing damage, thus improving the service life of the electric hoist.

[0044] Meanwhile, rubber rings 17 are fixedly connected to both sides of the first roller 6, and springs 18 are fixed inside the rubber rings 17. The rubber rings 17 act as a protective pad, which can effectively reduce the direct contact between the first roller 6 and the guide post connecting block 4 when they collide, thus reducing wear. The buffering effect of the springs 18 can absorb the impact force generated when the first roller 6 collides with the guide post connecting block 4, reducing the damage to the equipment caused by the impact. By reducing wear and impact, the service life of the wire rope and guide wheel can be extended.

[0045] Furthermore, the first roller 6 slides and rotates on the surface of the guide post 5, and the wire rope 7 is guided by the grooves on the surface of the wire rope drum 3 and the first roller 6. The wire rope drum 3 limits the first roller 6, preventing the wire rope from falling off the wire rope drum 3 when the wire rope 7 is pulled at an angle, thus improving the safety of the electric hoist. At the same time, rubber rings 17 and springs 18 are set on both sides of the first roller 6. The wire rope 7 acts as a protective pad, which can effectively reduce the direct contact between the first roller 6 and the guide post connecting block 4 when they collide, reducing wear. The buffering effect of the springs 18 can absorb the impact force generated when the first roller 6 collides with the guide post connecting block 4, reducing the damage to the equipment caused by the impact. By reducing wear and impact, the service life of the wire rope and the guide wheel can be extended.

[0046] The connecting plate 10, connecting block 9, and second roller 14 facilitate the movement of the electric hoist on the surface of the I-beam guide rail, allowing it to easily reach different work positions without the need for additional equipment or complex installation processes. The robustness and stability of the I-beam provide reliable support for the electric hoist, ensuring its safe operation and enabling it to be quickly moved to the location requiring lifting or handling, thereby improving overall work efficiency.

[0047] Structural Description: Electric Hoist Cylinder 1: As the main supporting structure of the entire electric hoist, it bears all other components and provides space for their installation and operation;

[0048] First drive motor 2: provides power to wire rope drum 3, drives it to rotate, thereby controlling the extension and retraction of wire rope 7 and the lifting and lowering of hook 8;

[0049] Wire rope drum 3: The surface is provided with spiral grooves for winding and guiding the wire rope 7, ensuring that the wire rope is arranged regularly on the drum and avoiding tangled rope, entanglement or confusion;

[0050] Guide post connecting block 4 and guide post 5: provide support and guidance for the first roller 6, ensuring that the roller can rotate and move smoothly;

[0051] First roller 6: The surface is provided with an annular groove and a protrusion, which engages with the groove on the surface of the wire rope drum 3 to help guide the wire rope 7 and prevent it from falling off the groove of the drum 3;

[0052] Rubber ring 17 and spring 18: As a protective pad and buffer device for the first roller 6, they reduce direct contact and wear between the roller and the guide post connecting block 4, absorb impact force, and extend service life.

[0053] Flame cut-off device 19: When the first roller 6 moves to the limit position and triggers the limit switch 21, the flame cut-off device will disconnect the power supply of the first drive motor 2, so that the wire rope drum 3 stops rotating and prevents equipment damage.

[0054] Connecting rod 20 and limiting lever 21: The connecting rod is used to transmit the movement signal of the first roller 6 to the flame cut-off device 19, and the limiting lever is used to contact the first roller and trigger the limit switch of the flame cut-off device.

[0055] Hook 8: Connects to the end of wire rope 7 and is used for lifting and moving objects;

[0056] Connecting block 9, connecting plate 10, fixing bolt 11, connecting shaft 13, second roller 14, second drive motor 12, sprocket 16 and chain 15: These components together constitute the moving and supporting system of the electric hoist, enabling the electric hoist to move smoothly on the I-beam guide rail and quickly reach different working positions.

[0057] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An anti-escape groove device for an electric hoist wire rope, characterized by: The electric hoist cylinder (1) is provided with a steel wire rope limiting assembly. The steel wire rope limiting assembly is provided with a first driving motor (2) fixedly connected to the right end of the electric hoist cylinder (1), and the output end of the first driving motor (2) is fixedly connected with a steel wire rope winding drum (3) rotatably connected with the electric hoist cylinder (1). The surface of the steel wire rope winding drum (3) is provided with a spiral groove, and the surface of the steel wire rope winding drum (3) is wound with a steel wire rope (7). The front end of the electric hoist cylinder (1) is fixedly connected with two guide pillar connecting blocks (4), the inside of the two guide pillar connecting blocks (4) is rotatably connected with a guide pillar (5), the surface of the guide pillar (5) is sleeved with a first roller (6), the surface of the first roller (6) is provided with two annular grooves and is fixedly connected with two annular protrusions, and the annular protrusions on the surface of the first roller (6) are engaged with the grooves on the surface of the steel wire rope winding drum (3). The left side of the first roller (6) is fixedly connected with a rubber ring (17), the inside of the rubber ring (17) is fixedly connected with a spring (18), and the rubber ring (17) is in the shape of a circular ring.

2. An electric hoist wire rope anti-off groove device according to claim 1, characterized in that: The rubber ring (17) and the spring (18) are both provided with two symmetrical sides on the two sides of the first roller (6).

3. An electric hoist wire rope anti-off groove device according to claim 1, characterized in that: The surface of the first driving motor (2) is fixedly installed with a fire interrupter (19), the front end of the electric hoist cylinder (1) is slidably connected with a connecting rod (20), the surface of the connecting rod (20) is fixedly connected with two limiting flaps (21), and the connecting rod (20) is connected with the travel switch of the fire interrupter (19).

4. An electric hoist wire rope anti-off groove device according to claim 1, characterized in that: The surface of the steel wire rope (7) is drivingly connected with a hook (8), and the other end of the steel wire rope (7) is fixedly connected with the shell of the electric hoist cylinder (1).

5. An electric hoist wire rope anti-off groove device according to claim 1, characterized in that: The upper end of the electric hoist cylinder (1) is fixedly connected with a connecting block (9), the front and rear sides of the connecting block (9) are respectively provided with connecting plates (10), the inside of the connecting block (9) is provided with two fixed bolts (11), and the two connecting plates (10) are fixed with the connecting block (9) through the two fixed bolts (11). The inside of each of the two connecting plates (10) is rotatably connected with two connecting shafts (13), and the surface of each of the four connecting shafts (13) is fixedly connected with a second roller (14).

6. An electric hoist wire rope anti-off groove device according to claim 5, characterized in that: The surface of the front connecting plate (10) is fixedly connected with a second driving motor (12), and the output end of the second driving motor (12) is fixedly connected with the corresponding connecting shaft (13). The surface of each of the two connecting shafts (13) on the front side is fixedly connected with a chain wheel (16), and the surfaces of the two chain wheels (16) are drivingly connected with a chain (15).

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