Multifunctional rope guide

Abstract

The utility model relates to the field of hoisting machinery, and discloses a multifunctional rope guide, which comprises a compression roller for guiding a rope and a support assembly for supporting the compression roller, the support assembly comprises a support plate and a yoke plate, one end of the yoke plate is connected with the support plate, and the other end of the yoke plate is connected with the compression roller; a microswitch and a spring are oppositely arranged on the two sides of the yoke plate, and the spring pushes the yoke plate to make contact with the microswitch during normal winding. When the steel wire rope is normally wound on the winding drum, the spring pushes the yoke plate to be in contact with the microswitch, at the moment, the microswitch is in a closed state, and the electric hoist can work normally; after the steel wire rope is separated from the groove, the pressing roller is ejected out by a certain distance, the yoke plate matched with the pressing roller is driven to leave the microswitch, and the microswitch is switched off to cut off the power supply protection equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hoisting machinery, concretely relates to a multifunctional rope guide. BACKGROUND

[0002] The rope guide is an important component for guiding the running of the steel wire rope in the crane and other equipment. When the steel wire rope is winding and unwinding on the drum, the guide wheel of the rope guide contacts with the steel wire rope. Through the rotation of the guide wheel and the guidance of the guide plate, the steel wire rope is wound or unwound on the drum according to a certain rule, so as to realize the guiding effect of the steel wire rope.

[0003] The existing rope guide can ensure that the steel wire rope is arranged neatly on the drum, avoid the phenomenon of disorderly winding and jumping groove of the steel wire rope, and ensure the normal operation of the crane and other equipment. Through reasonable guidance of the running direction of the steel wire rope, the winding of the steel wire rope on the drum is more uniform, the friction and wear between the steel wire rope and the drum and other components are reduced, and the service life of the steel wire rope is prolonged. The winding and unwinding of the steel wire rope is also more smooth, the working efficiency of the crane and other equipment is improved, and the downtime caused by the failure of the steel wire rope is reduced.

[0004] However, the existing rope guide cannot completely avoid failure. When the phenomenon of disorderly winding and jumping groove of the steel wire rope occurs, it does not have the corresponding protection and disposal function. Therefore, we propose a multifunctional rope guide. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the defects in the prior art, and provides a multifunctional rope guide. Through the cooperation of the spring, the micro switch and the connecting plate, the function of preventing disorderly winding of the steel wire rope on the drum is realized. After disorderly winding, the power supply is immediately cut off to avoid further expansion of the confusion.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A multifunctional rope guide, comprising a compression roller for guiding the rope and a support assembly for supporting the compression roller, the support assembly comprising a support plate and a connecting plate, one end of the connecting plate being connected with the support plate, and the other end being connected with the compression roller; micro switches and springs are arranged on the two sides of the connecting plate, and the springs push the connecting plate to contact with the micro switches when winding normally.

[0008] Optionally, one side of the support plate is provided with a mounting plate capable of being connected with the crane, and the mounting plate adopts an L-shaped structure.

[0009] Optionally, the support plate adopts an L-shaped structure, the micro switches are fixedly installed on the support plate, and the two ends of the springs are connected with the mounting plate and the connecting plate respectively.

[0010] Optionally, a guide ring is fitted on the pressure roller. The middle part of the guide ring is a circumferential surface, and the two ends of the circumferential surface are provided with conical surfaces. The gap between the conical surface and the drum is smaller than the diameter of the wire rope.

[0011] Optionally, a limiting component that can abut against the connecting plate is also installed on the side of the support plate near the micro switch.

[0012] Optionally, a drive wheel and a driven wheel are installed on one side of the connecting plate, and an encoder is installed on the other side. The drive wheel is fixedly connected to the pressure roller, the driven wheel is connected to the encoder, and the drive wheel and the driven wheel are connected by a chain.

[0013] Optionally, the end of the pressure roller is provided with a roller shaft, the pressure roller is rotatably connected to the connecting plate through the roller shaft, and the roller shaft passes through the connecting plate and is connected to the drive wheel.

[0014] Optionally, two support components are provided, symmetrically distributed at both ends of the pressure roller, and both ends of the pressure roller are rotatably connected to the connecting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] (1) In this utility model, when the wire rope is normally wound on the drum, the spring pushes the connecting plate to contact the micro switch. At this time, the micro switch is in the closed state and the electric hoist can work normally. When the wire rope is derailed, the pressure roller is pushed out a certain distance, and the connecting plate that cooperates with the pressure roller is driven away from the micro switch. The micro switch is disconnected to cut off the power supply and protect the equipment.

[0017] (2) In this utility model, when the electric hoist rises, the wire rope begins to wind on the drum. When it winds to a specific position, the wire rope will push open the guide ring, and the pressure roller and connecting plate will be pushed out a certain distance, causing the micro switch to disconnect, so as to cut off the power supply and protect the equipment.

[0018] (3) In this utility model, due to the elastic force of the spring, the connecting plate and the pressure roller have a force pressing towards the drum. The circumferential surface of the guide ring is tightly attached to the drum, and the guide ring and the pressure roller can rotate with the rotation of the drum. When the pressure roller rotates, it can drive the drive wheel to rotate synchronously. The drive wheel then drives the driven wheel to rotate through the chain, thereby driving the encoder to rotate and work. The encoder inputs the signal to the control system. When the speed of the pressure roller exceeds a certain limit, the power can be cut off. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the multifunctional rope guide in an embodiment of this utility model;

[0020] Figure 2This is a side view of the multifunctional rope guide in an embodiment of this utility model.

[0021] Figure 3 This is a top view of the multifunctional rope guide in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram showing the positional structure of the driving and driven wheels and the chain in an embodiment of this utility model;

[0023] The components include: 1. Pressure roller; 2. Guide ring; 3. Drum; 4. Support plate; 5. Connecting plate; 6. Spring; 7. Micro switch; 8. Limiting assembly; 9. Mounting plate; 10. Driven wheel; 11. Driving wheel; 12. Chain; 13. Encoder. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] The drum 3 is used to wind the wire rope to achieve winding and unwinding. The outer circumferential surface of the drum 3 is also provided with a rope groove to reduce the phenomenon of tangling when the wire rope is wound.

[0026] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, a multifunctional rope guide includes a pressure roller 1 and a support assembly. The pressure roller 1 guides the wire rope as it winds on the drum 3, while the support assembly supports the pressure roller 1 to achieve the rope guiding function. Typically, two support assemblies are provided, symmetrically distributed at both ends of the pressure roller 1. A mounting plate 9, which can be connected to a crane, is provided on one side of the support plate 4, and the mounting plate 9 has an L-shaped structure. One side of the L-shaped mounting plate 9 is fixedly connected to the support plate 4, and the other side can be connected to the crane, thereby enabling the rope guide to be installed at the corresponding position on the crane.

[0027] The support assembly includes a support plate 4 and a connecting plate 5. One end of the connecting plate 5 is rotatably connected to the support plate 4, and the other end is rotatably connected to the pressure roller 1. Micro switches 7 and springs 6 are arranged opposite each other on both sides of the connecting plate 5. The support plate 4 adopts an L-shaped structure, and the micro switches 7 are fixedly installed on the support plate 4. The two ends of the springs 6 are connected to the mounting plate 9 and the connecting plate 5, respectively.

[0028] Among them, a screw is installed on the side of the connecting plate 5 near the spring 6, and the head of the screw is embedded in one end of the spring 6 to play a positioning role.

[0029] When the wire rope is wound normally on the drum 3, the spring 6 pushes the connecting plate 5 to contact the micro switch 7. At this time, the micro switch 7 is in the closed state, and the electric hoist can work normally. When the wire rope is derailed, the pressure roller 1 is pushed out a certain distance, and the connecting plate 5 that cooperates with the pressure roller 1 is driven away from the micro switch 7. The micro switch 7 is disconnected to cut off the power supply and protect the equipment.

[0030] Furthermore, a guide ring 2 is fitted onto the pressure roller 1. The middle part of the guide ring 2 is a circumferential surface, and the two ends of the circumferential surface are provided with conical surfaces. The gap between the conical surfaces and the drum 3 is smaller than the diameter of the wire rope. The guide ring 2 is fitted onto a specific position on the pressure roller 1. When viewed in axial section, the middle of the guide ring 2 is a flat surface, and the two sides are inclined surfaces. The gap between the inclined surfaces and the drum 3 is smaller than the diameter of the wire rope. The inclined surface part is made of metal materials such as iron, and the flat surface part is made of materials such as nylon.

[0031] Both ends of the pressure roller 1 are rotatably connected to the connecting plate 5. When the electric hoist is working normally below, it does not work because the wire rope does not touch the guide ring 2. When the electric hoist rises, the wire rope begins to wind on the drum 3. When it winds to a specific position, the wire rope will push open the guide ring 2, and the pressure roller 1 and the connecting plate 5 will be pushed out a certain distance, causing the micro switch 7 to disconnect to cut off the power and protect the equipment.

[0032] Among them, the micro switch 7 is connected in the power supply line of the lifting equipment.

[0033] In addition, a limiting component 8 is installed on the side of the support plate 4 near the micro switch 7, which can abut against the connecting plate 5. The limiting component 8 includes a support block fixedly installed on the top of the support plate 4, with a screw screwed through the support block, one end of which passes through the support block and abuts against the connecting plate 5. The limiting component 8 can ensure the range of swing of the connecting plate 5, preventing it from being damaged by excessive force from the spring 6.

[0034] Example 2: Based on Example 1, the rope guide proposed in this utility model can also play the role of overspeed protection.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a drive wheel 11 and a driven wheel 10 are installed on one side of the connecting plate 5, and an encoder 13 is installed on the other side. The drive wheel 11 is fixedly connected to the pressure roller 1, the driven wheel 10 is connected to the encoder 13, and the drive wheel 11 and the driven wheel 10 are connected by a chain 12.

[0036] Specifically, the end of the pressure roller 1 is provided with a roller shaft, the pressure roller 1 is rotatably connected to the connecting plate 5 through the roller shaft, and the roller shaft passes through the connecting plate 5 and is connected to the drive wheel 11;

[0037] The guide ring 2 is fitted onto the pressure roller 1. Due to the elastic force of the spring 6, the connecting plate 5 and the pressure roller 1 exert a force in the direction of pressing the drum 3, so that the circumferential surface of the guide ring 2 is tightly attached to the drum 3, and the guide ring 2 and the pressure roller 1 can rotate with the rotation of the drum 3. When the pressure roller 1 rotates, it can drive the drive wheel 11 to rotate synchronously. The drive wheel 11 then drives the driven wheel 10 to rotate through the chain 12, which in turn drives the encoder 13 to rotate and work. Subsequently, the encoder 13 inputs the signal to the control system. When the speed of the pressure roller 1 exceeds a certain limit, the power can be cut off.

[0038] In summary, the multifunctional rope guide proposed in this utility model can prevent the wire rope from becoming tangled on the drum 3, provide upward limit protection, and also provide overspeed protection.

[0039] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multifunctional rope guide, characterized in that: It includes a pressure roller (1) for guiding the rope and a support assembly for supporting the pressure roller (1). The support assembly includes a support plate (4) and a connecting plate (5). One end of the connecting plate (5) is connected to the support plate (4), and the other end is connected to the pressure roller (1). A micro switch (7) and a spring (6) are arranged opposite to each other on both sides of the connecting plate (5). During normal winding, the spring (6) pushes the connecting plate (5) to contact the micro switch (7).

2. The multifunctional rope guide according to claim 1, characterized in that: The support plate (4) is provided with a mounting plate (9) on one side that can be connected to the crane, and the mounting plate (9) adopts an L-shaped structure.

3. The multifunctional rope guide according to claim 2, characterized in that: The support plate (4) adopts an L-shaped structure, and the micro switch (7) is fixedly installed on the support plate (4). The two ends of the spring (6) are respectively connected to the mounting plate (9) and the connecting plate (5).

4. The multifunctional rope guide according to claim 3, characterized in that: A guide ring (2) is fitted on the pressure roller (1). The middle part of the guide ring (2) is a circumferential surface, and the two ends of the circumferential surface are provided with conical surfaces. The gap between the conical surface and the drum (3) is smaller than the diameter of the wire rope.

5. The multifunctional rope guide according to claim 4, characterized in that: A limiting component (8) that can abut against the connecting plate (5) is also installed on the side of the support plate (4) near the micro switch (7).

6. The multifunctional rope guide according to claim 1, characterized in that: One side of the connecting plate (5) is equipped with a drive wheel (11) and a driven wheel (10), and the other side is equipped with an encoder (13). The drive wheel (11) is fixedly connected to the pressure roller (1), the driven wheel (10) is connected to the encoder (13), and the drive wheel (11) and the driven wheel (10) are connected by a chain (12).

7. The multifunctional rope guide according to claim 6, characterized in that: The end of the pressure roller (1) is provided with a roller shaft. The pressure roller (1) is rotatably connected to the connecting plate (5) through the roller shaft, and the roller shaft passes through the connecting plate (5) and is connected to the drive wheel (11).

8. The multifunctional rope guide according to any one of claims 1-7, characterized in that: Two support components are provided, symmetrically distributed at both ends of the pressure roller (1), and both ends of the pressure roller (1) are rotatably connected to the connecting plate (5).

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