A transition block for a winding hoist

Abstract

The utility model discloses a kind of transition blocks for winding hoist, belong to winding hoist accessory field, including fixed frame, the outside of the fixed frame is equipped with winding drum, the top fixed connection of fixed frame one side has mount, the outside bolt connection of mount has transition block assembly for steel wire rope transition, transition block assembly includes bolt connection in the top of mount inverted "L" type transition frame, the one side of transition frame top is rotatably connected with the main wheel perpendicular to winding drum axis by bearing;The transition block for winding hoist, main wheel as core load-bearing and steering component, the first arc slot on it and steel wire rope form matched rolling contact, the second arc slot on side wheel is then lateral to steel wire rope Limit, compared with existing fixed sliding groove, rolling friction mechanism can reduce friction, significantly reduce the wear and tear of steel wire rope surface and internal fatigue damage, to greatly extend the service life of steel wire rope.

Description

Technical Field

[0001] This utility model belongs to the technical field of winding elevator accessories, specifically relating to a transition block for winding elevators. Background Technology

[0002] As a key piece of equipment in mining operations, the winding hoist lifts containers by winding steel wire ropes on a drum. During operation, the steel wire rope needs to be wound in multiple layers on the drum. In this process, the changing of layers and the turning of the steel wire rope are unavoidable. In the traditional solution, the steel wire rope directly contacts the drum wall when changing direction, and the turning is forced by the drum wall. This causes severe sliding friction and shear stress between the steel wire rope and the rigid drum wall, resulting in severe wear of the steel wire rope, a significantly shortened service life, and the potential safety hazard of rope breakage. For example, CN201882842U discloses a transition block for a winding hoist. The inner and outer end faces of the transition block are arc-shaped, and the thickness of the transition block gradually increases from the rope inlet end to the rope outlet end. A boss is provided along the edge of the inner end face on one side of the transition block. The thickness of the boss gradually increases and the height gradually decreases from the rope inlet end to the rope outlet end. A rope groove connected to the boss is provided along the edge of the inner end face on the rope outlet end side. This invention facilitates the change of wire rope direction when the wire rope is wound on the drum, while avoiding severe friction between the wire rope and the drum wall during direction changes, thus preventing wire rope breakage, increasing the service life of the wire rope, and improving the safety of the hoist. In the actual use of the above cases, fixed bosses and rope grooves are provided to guide the wire rope and avoid direct collision with the drum wall. However, such transition blocks still cause the wire rope to slide and rub against the fixed groove wall, failing to fundamentally eliminate the wear phenomenon. Utility Model Content

[0003] The purpose of this invention is to provide a transition block for a winding hoist to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a transition block for a winding hoist, comprising a fixed frame, a winding drum provided on the outside of the fixed frame, an mounting frame fixedly connected to the top of one side of the fixed frame, and a transition block assembly for wire rope transition bolted to the outside of the mounting frame.

[0005] In a preferred embodiment, the transition block assembly includes an inverted "L"-shaped transition frame bolted to the top of the mounting frame, and a main wheel perpendicular to the axis of the winding drum is rotatably connected to one side of the top of the transition frame via a bearing.

[0006] In a preferred embodiment, the main wheel has a first arc-shaped groove on its outer side, and a diagonal brace is fixedly connected to the bottom of one side of the transition frame.

[0007] In a preferred embodiment, the transition frame has two side frames arranged in a figure-eight pattern on both sides of the inner wall of the back of the main wheel, and the bottom ends of the two side frames are rotatably connected to side wheels.

[0008] In a preferred embodiment, the side wheel has a second arc-shaped groove on its outer side, and the axis of the side wheel is perpendicular to the axis of the main wheel.

[0009] In a preferred embodiment, a motor is fixedly connected inside the transition frame, an adjusting screw is fixedly connected to the output shaft of the motor, a threaded block is threadedly connected to the external thread of the adjusting screw, and a connecting plate is rotatably connected to the side of the threaded block facing the main wheel.

[0010] In a preferred embodiment, guide grooves are provided on the back of both side frames, and movable blocks are slidably connected inside the two guide grooves. The movable blocks are rotatably connected to the other end of the connecting plate on the outward side.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The transition block used in the winding hoist has a main wheel as the core load-bearing and steering component. The first arc groove on the main wheel forms a matching rolling contact with the wire rope, while the second arc groove on the side wheel provides lateral restraint for the wire rope. Compared with the existing fixed groove, this rolling friction mechanism can reduce friction, significantly reduce wear on the surface of the wire rope and internal fatigue damage, thereby greatly extending the service life of the wire rope.

[0012] The transition block used in the winding hoist has two side wheels arranged in a figure-eight shape, which together with the main wheel form a stable three-dimensional guiding space. This structure can effectively constrain the wire rope, prevent it from jumping or derailing during operation, ensure a smooth and reliable hoisting process, and reduce the impact and uncertainty caused by the swing of the wire rope.

[0013] This transition block for a winding hoist can move a movable block on the side frame along a guide groove via a motor-driven adjusting screw, thereby achieving precise adjustment of the distance between the two side wheels. This allows the transition block to flexibly adapt to various wire ropes of different diameters, enhancing the equipment's versatility and reducing the need and cost of spare parts for replacing dedicated transition blocks for different specifications of wire ropes. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a front view of the transition frame; Figure 4 This is a side view of the transition frame.

[0015] In the diagram: 1. Fixed frame; 101. Mounting frame; 2. Rewinding drum; 3. Transition frame; 301. Diagonal brace; 4. Main wheel; 401. First arc groove; 5. Side frame; 501. Guide groove; 6. Side wheel; 601. Second arc groove; 7. Adjusting screw; 8. Threaded block; 9. Connecting plate; 10. Moving block. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments.

[0017] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0018] Please see Figures 1-4 This utility model provides a transition block for a winding hoist, including a fixed frame 1, a winding drum 2 on the outside of the fixed frame 1, a mounting frame 101 fixedly connected to the top of one side of the fixed frame 1, a transition block assembly for wire rope transition bolted to the outside of the mounting frame 101, the transition block assembly including an inverted "L"-shaped transition frame 3 bolted to the top of the mounting frame 101, a main wheel 4 perpendicular to the axis of the winding drum 2 rotatably connected to one side of the top of the transition frame 3 via a bearing, a first arc groove 401 opened on the outside of the main wheel 4, and a diagonal brace 301 fixedly connected to the bottom of one side of the transition frame 3; During the operation of the winding hoist, the wire rope extends from the take-up drum 2 and first contacts the main wheel 4 in the transition block assembly. The main wheel 4 is rotatably connected to one side of the top of the inverted "L"-shaped transition frame 3 through a bearing, and its axis is perpendicular to the axis of the take-up drum 2. The first arc groove 401 on the outside of the main wheel 4 matches the shape of the wire rope, so that the wire rope can be smoothly embedded in the first arc groove 401. At this time, the wire rope and the main wheel 4 are in contact. When the hoist is running, the wire rope begins to move under tension. Since the main wheel 4 and the transition frame 3 are connected by bearings, the main wheel 4 can rotate freely. When the wire rope moves in the first arc groove 401, it will drive the main wheel 4 to roll. Compared with the traditional sliding friction, this rolling contact method greatly reduces the friction between the wire rope and the contact parts, so that the wire rope can change direction more smoothly and complete the winding or unwinding action on the take-up drum 2.

[0019] Please see Figures 1-4The transition frame 3 has two side frames 5 arranged in a figure-eight pattern on both sides of the inner wall of the back of the main wheel 4. The bottom of the two side frames 5 is rotatably connected to the side wheel 6. The side wheel 6 has a second arc groove 601 on its outer side. The axis of the side wheel 6 is perpendicular to the axis of the main wheel 4. The transition frame 3 has a motor fixedly connected inside. The output shaft of the motor is fixedly connected to an adjusting screw 7. The adjusting screw 7 is threadedly connected to a threaded block 8. The threaded block 8 is rotatably connected to a connecting plate 9 on the side facing the main wheel 4. The back of the two side frames 5 has a guide groove 501. The two guide grooves 501 are slidably connected to a moving block 10 inside. The moving block 10 is rotatably connected to the other end of the connecting plate 9 on its outer side. During the rolling contact between the wire rope and the main wheel 4, the two side wheels 6, which are distributed in a figure-eight shape on the side frames 5 on both sides of the inner wall of the back of the main wheel 4, play an important role in lateral limiting. The second arc groove 601 on the outside of the side wheel 6 is also matched with the wire rope. When the wire rope moves on the main wheel 4, the side wheels 6 constrain the wire rope from both sides to prevent the wire rope from jumping laterally or falling off the first arc groove 401 of the main wheel 4 during operation, and ensure that the wire rope always stays on a stable running trajectory. When it is necessary to adapt to wire ropes of different diameters, the motor fixed inside the transition frame 3 is started. The motor output shaft rotates, driving the adjusting screw 7 fixedly connected to it to rotate. Since the adjusting screw 7 is externally threaded with a threaded block 8, when the adjusting screw 7 rotates, the threaded block 8 will move along the axial direction of the adjusting screw 7. The side of the threaded block 8 facing the main wheel 4 is rotatably connected to the connecting plate 9. The back of both side frames 5 is provided with a guide groove 501. A moving block 10 is slidably connected in the guide groove 501, and the side of the moving block 10 is rotatably connected to the other end of the connecting plate 9. When the threaded block 8 moves, it will pull the moving block 10 to slide in the guide groove 501 through the connecting plate 9, thereby driving the two side frames 5 to rotate around the rotation point between itself and the transition frame 3, realizing the precise adjustment of the distance between the two side wheels 6, so that the second arc groove 601 on the side wheel 6 can be well matched with wire ropes of different diameters. The rolling contact method between the main wheel 4 and the wire rope transforms the sliding friction between the wire rope and the fixed groove wall in the traditional transition block into rolling friction. The frictional force of rolling friction is much smaller than that of sliding friction, which greatly reduces the surface wear of the wire rope during operation. At the same time, it reduces the heat generated by friction and reduces the fatigue damage inside the wire rope, thereby significantly extending the service life of the wire rope and reducing equipment maintenance costs and the frequency of wire rope replacement. Two side wheels 6 arranged in a figure-eight shape together with the main wheel 4 form a stable three-dimensional guiding space. The side wheels 6 use the second arc groove 601 to laterally limit the wire rope, effectively preventing the wire rope from jumping and derailing during operation. This makes the movement of the wire rope more stable and reliable during the lifting process, reduces the impact and uncertainty caused by the swing of the wire rope, lowers the probability of safety accidents such as rope breakage, and improves the overall safety of the winding hoist.

[0020] The working principle and usage process of this utility model are as follows: When the winding hoist is working, the wire rope extends from the take-up drum 2 and first contacts the main wheel 4 on the top side of the inverted "L"-shaped transition frame 3, which is perpendicular to the central axis of the transition block assembly and connected to the take-up drum 2 through the bearing. Its outer first arc groove 401 matches the wire rope, and the wire rope is smoothly embedded and contacts it. When the hoist is running, the wire rope moves under tension, driving the main wheel 4 to roll in the first arc groove 401. The rolling contact reduces friction, allowing the wire rope to change direction more smoothly and complete the winding or unwinding on the take-up drum 2. During the process, the side wheels 6 on the side frames 5, which are arranged in a figure-eight shape on both sides of the inner wall of the back of the main wheel 4, match the wire rope with their second arc groove 601. This restrains the wire rope from both sides, preventing lateral jumping or derailment, and ensuring stable running trajectory. When it is necessary to adapt to wire ropes of different diameters, the motor inside the transition frame 3 is started. Its output shaft drives the adjusting screw 7 to rotate, and the threaded block 8 with threaded connection moves axially. Through the connecting plate 9, the moving block 10 in the guide groove 501 is pulled to slide, causing the side frame 5 to rotate around the rotation point. This precisely adjusts the distance between the two side wheels 6, so that the second arc groove 601 matches the wire rope well.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transition block for a winding hoist, comprising a fixing frame (1), characterized in that: The fixed frame (1) is provided with a winding drum (2) on the outside. A mounting frame (101) is fixedly connected to the top of one side of the fixed frame (1). A transition block assembly for wire rope transition is bolted to the outside of the mounting frame (101).

2. A transition block for a winding hoist according to claim 1, characterized in that: The transition block assembly includes an inverted "L"-shaped transition frame (3) bolted to the top of the mounting frame (101), and a main wheel (4) perpendicular to the axis of the winding drum (2) is rotatably connected to one side of the top of the transition frame (3) via a bearing.

3. A transition block for a winding hoist according to claim 2, characterized in that: The main wheel (4) has a first arc groove (401) on its outside, and a diagonal brace (301) is fixedly connected to the bottom of one side of the transition frame (3).

4. A transition block for a winding hoist according to claim 3, characterized in that: The transition frame (3) has two side frames (5) arranged in a figure-eight pattern on both sides of the inner wall of the back of the main wheel (4), and the bottom ends of the two side frames (5) are rotatably connected to side wheels (6).

5. A transition block for a winding hoist according to claim 4, characterized in that: The side wheel (6) has a second arc-shaped groove (601) on its outside, and the axis of the side wheel (6) is perpendicular to the axis of the main wheel (4).

6. A transition block for a winding hoist according to claim 5, characterized in that: The transition frame (3) is internally fixedly connected to a motor, and an adjusting screw (7) is fixedly connected to the output shaft of the motor. The adjusting screw (7) is externally threaded to a threaded block (8), and a connecting plate (9) is rotatably connected to the threaded block (8) facing the main wheel (4).

7. A transition block for a winding hoist according to claim 6, characterized in that: The back of each of the two side frames (5) is provided with a guide groove (501), and a moving block (10) is slidably connected inside the two guide grooves (501). The moving block (10) is rotatably connected to the other end of the connecting plate (9) on the outside.

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