Hoisting hook lifting limiting device for monorail crane vehicle

Abstract

The utility model relates to a kind of lifting beam lifting hook lifting limiting device for monorail crane, belong to monorail equipment.The utility model uses technical scheme: the front and rear ends of lifting beam are connected with at least two groups of bearing trolley, lifting hook is arranged in the lower part of lifting beam, lifting hook is connected with lifting drive mechanism, characterized in that, lifting hook position is provided with lifting limiting frame on one side directly above, lifting limiting frame is fixed on lifting beam, and deviation sensor is provided on lifting limiting frame, the contact rod of deviation sensor is connected with one end of limiting stop bar, the other end of limiting stop bar is horizontally arranged and perpendicular to lifting beam, lifting hook is provided with lifting hook lever on one side of upper part, lifting hook lever is perpendicular with limiting stop and horizontally arranged, lifting hook lever and limiting stop bar touch when lifting hook rises to the highest position.The device can be installed on the existing monorail lifting beam, reduce the difficulty and cost of the whole machine replacement, and has good effect on the existing monorail lifting height limiting.

Description

Technical Field

[0001] This utility model relates to a lifting hook raising limit device for a lifting beam of a monorail crane locomotive, which belongs to monorail crane equipment. Background Technology

[0002] Monorail locomotives boast advantages such as high carrying efficiency, large carrying capacity, and wide range of cargo types, making them the preferred equipment for auxiliary transportation in underground coal mines and widely used in coal mines both domestically and internationally. The lifting beam is one of the main supporting transport devices for monorail locomotives, its primary function being to connect the locomotive to the cargo. Depending on the type and dimensions of the cargo, lifting beams come in various types, and especially in recent years, with the widespread application of monorail locomotives, the load-bearing capacity and structural forms of lifting beams have become increasingly diverse.

[0003] Currently, the power source for lifting beams is mostly a hydraulic motor or hydraulic cylinder, and the transmission method is mostly a sprocket and chain connection. Due to the sprocket-chain transmission method, the hook and lifting beam will experience relative displacement in space. Especially when the locomotive is going uphill or downhill or changing slopes, excessive lifting height can cause friction or collision between the hook and the lifting beam, as well as premature damage to the chain due to uneven or excessive stress, and other safety hazards, directly affecting the performance of the lifting beam and the safety and stability of the transport. Existing lifting beams mostly rely on experience to manually control the lifting height, which has a large degree of uncertainty and instability. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a lifting hook height limit device for a monorail crane locomotive to assist operators in reliably and stably controlling the lifting height, ensuring that the hook does not collide with the lifting beam during locomotive transportation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model relates to a lifting hook raising and limiting device for a monorail crane locomotive. The lifting beam has at least two sets of carrying trolleys connected to its front and rear ends. A lifting hook is installed at the lower part of the lifting beam and connected to a lifting drive mechanism. The feature is that a raising and limiting frame is installed on one side directly above the lifting hook position. The raising and limiting frame is fixed to the lifting beam and has a deviation sensor. The contact rod of the deviation sensor is connected to one end of a limiting stop bar. The other end of the limiting stop bar is horizontally set and perpendicular to the lifting beam. A hook lever is installed on one side of the upper part of the lifting hook. The hook lever is perpendicular to the limiting stop bar and horizontally arranged. When the lifting hook rises to the highest position, the hook lever contacts the limiting stop bar.

[0006] According to the lifting hook raising limit device for the lifting beam of the monorail crane locomotive, the lifting drive mechanism includes a wire rope winding mechanism, a wire rope, two sets of pulleys and a fixing block. The fixing block fixes one end of the wire rope and is fixed on the lifting beam. The wire rope passes over the top of one set of pulleys, passes under the movable pulley on the lifting hook, passes over the top of the other pulley, and finally winds around the wire rope winding mechanism.

[0007] According to the aforementioned lifting hook raising limit device for the lifting beam of the monorail crane locomotive, the raising limit frame includes two fixed plates, multiple long bolts and a lower suspension fixed plate. The two fixed plates are respectively located on the upper and lower parts of the lifting beam, and the two fixed plates are fixed on both sides of the lifting beam using long bolts. The lower suspension fixed plate is fixed on the lower fixed plate, and the deviation sensor is fixed on the lower suspension fixed plate.

[0008] According to the aforementioned lifting hook raising limit device for the monorail crane locomotive, the limit stop is fixed to the contact rod of the deviation sensor using clamping bolts.

[0009] According to the aforementioned lifting hook raising limit device for the lifting beam of the monorail crane locomotive, the lower suspension fixing plate includes a vertical part, a horizontal part, and a triangular reinforcing plate. The vertical part is fixed perpendicularly to the horizontal part, and the horizontal part is fixed to the lower fixing plate by bolts. The triangular reinforcing plate completely fixes the horizontal part and the vertical part together.

[0010] This utility model is installed on an existing monorail crane conveyor beam. It can control the position of the lifting beam at the top and stop it. While raising the lifting height of the monorail crane as much as possible, it can control the lifting beam to stop even if it stops. This helps the operators to effectively control the lifting height and ensures that the hook does not collide with the lifting beam during the locomotive transportation process, thus laying the foundation for the safe and stable operation of the monorail crane locomotive.

[0011] This device can be installed on existing monorail crane lifting beams, reducing the difficulty and cost of replacing the entire machine, and has a very good effect on modifying the lifting height limit of existing monorail cranes. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the monorail lifting beam of this utility model. Figure 2 This is a partial structural diagram of the lifting hook of this utility model. Figure 3 This is a diagram of the lifting beam interface at the location of the deviation sensor of this utility model. Figure 4 This is the control principle diagram of this utility model.

[0013] Reference numerals: 1 Lifting beam, 2 Carrying trolley, 3 Connecting block, 4 Fixed pulley, 5 Lifting hook, 6 Lower suspension fixing plate, 7 Wire rope, 8 Lifting drive mechanism, 9 Fixing plate, 10 Long bolt, 11 Triangular reinforcing plate, 12 Deviation sensor, 13 Clamping bolt, 14 Limit stop bar, 15 Hook lever, 16 Lever bolt, 17 Mounting bolt. Detailed Implementation

[0014] The specific details of this utility model are further described below: The following is a further description of the lifting hook lifting limit contact device for the monorail crane locomotive of this utility model. The lifting beam 1 is connected to at least two sets of carrying trolleys 2 at its front and rear ends. The lifting hook 5 is provided at the lower part of the lifting beam 1. The lifting hook 5 is connected to the lifting drive mechanism 8. The feature is that a lifting limit frame is provided on one side directly above the position of the lifting hook 5. The lifting limit frame is fixed on the lifting beam 1. A deviation sensor 12 is provided on the lifting limit frame. The contact rod of the deviation sensor 12 is connected to one end of the limit stop 14. The other end of the limit stop 14 is horizontally set and perpendicular to the lifting beam 1. A hook lever 15 is provided on one side of the upper part of the lifting hook 5. The hook lever 15 is perpendicular to the limit stop and horizontally arranged. When the lifting hook 5 rises to the highest position, the hook lever 15 contacts the limit stop 14.

[0015] A deviation sensor is an important device used to detect whether an object deviates from its predetermined track during transport, and it is widely used in automated production lines. It features a contact rod that triggers the contact to close when the rod's angle reaches 30°, stopping the lifting drive mechanism 8 and preventing the hook from rising excessively. This prevents the hook 5 from colliding with the lifting beam 1 during cargo transport by the monorail crane, thus avoiding a safety accident.

[0016] Specifically, the lifting drive mechanism 8 includes a wire rope winding mechanism, a wire rope 7, two sets of pulleys and a fixing block. The fixing block fixes one end of the wire rope 7 and is fixed on the lifting beam 1. The wire rope 7 passes over the top of one set of pulleys, passes under the movable pulley on the lifting hook 5, passes over the top of the other pulley, and finally winds around the wire rope winding mechanism.

[0017] In another embodiment, the wire rope and the corresponding pulley can also be a chain and a sprocket. By winding the chain, one end of the chain is pulled up, and the lifting hook on the chain is pulled upward.

[0018] In this device, the lifting limit frame includes two fixed plates 9, multiple long bolts 10, and a lower suspension fixed plate 6. The two fixed plates 9 are respectively located at the upper and lower parts of the lifting beam 1, and are fixed to both sides of the lifting beam 1 using long bolts 10. The lower suspension fixed plate 6 is fixed to the lower fixed plate 9, and the deviation sensor 12 is fixed to the lower suspension fixed plate 6. The limit stop 14 is fixed to the contact rod of the deviation sensor 12 using clamping bolts.

[0019] The further lower suspension fixing plate 6 includes a vertical part, a horizontal part and a triangular reinforcing plate 11. The vertical part is fixed perpendicularly to the horizontal part, and the horizontal part is fixed to the lower fixing plate 9 by bolts. The triangular reinforcing plate 11 completely fixes the horizontal part and the vertical part together.

[0020] Furthermore, the output of the deviation sensor is connected to the PLC, and the output of the PLC is connected to the winding mechanism of the wire rope winding mechanism. When the hook reaches the high position, the hook baffle will touch the limit stop bar perpendicular to it. The limit stop bar is pushed upward by the hook baffle, and the contact bar of the deviation sensor is pushed at a certain angle, triggering the deviation sensor and sending a signal to the PLC. The PLC will control the lifting solenoid valve to cut off the power. The switch of the solenoid valve will stop the wire rope winding mechanism from moving and drive the braking system of the wire rope winding mechanism to continue braking the drum. The hook will then stop lifting. Figure 2 The lowering angle position of the limit stop bar is the position when the hook baffle touches the limit stop bar when the initial hook reaches a higher position. At this time, the limit stop bar has not rotated and has not yet triggered the contact rod of the deviation sensor. When the hook continues to rise, the hook baffle bar continues to lift the limit stop bar, and the deflection angle of the contact rod of the deviation sensor reaches the limit position, triggering the deviation sensor. The deviation sensor sends a stop signal to the wire rope winding mechanism, and the hook stops rising, thus achieving the purpose of limiting the lifting of the hook.

[0021] This utility model, installed on an existing monorail crane conveyor beam, can control the lifting beam's position at the top even when it stops. While maximizing the lifting height of the monorail crane, it controls the lifting beam to a stop, assisting operators in effectively controlling the lifting height and ensuring that the hook does not collide with the lifting beam during locomotive transport. This lays the foundation for the safe and stable operation of the monorail crane. This device can be installed on existing monorail crane lifting beams, reducing the difficulty and cost of replacing the entire machine, and is highly effective for modifying existing monorail crane lifting height limits.

Claims

1. A lifting hook lifting limit device for a monorail crane locomotive, wherein the lifting beam (1) is connected to at least two sets of carrying trolleys (2) at its front and rear ends, and a lifting hook (5) is provided at the lower part of the lifting beam (1), and the lifting hook (5) is connected to a lifting drive mechanism (8), characterized in that, A lifting limit frame is provided on one side directly above the position of the lifting hook (5). The lifting limit frame is fixed on the lifting beam (1). A deviation sensor (12) is provided on the lifting limit frame. The contact rod of the deviation sensor (12) is connected to one end of the limit stop (14). The other end of the limit stop (14) is set horizontally and perpendicular to the lifting beam (1). A hook lever (15) is provided on one side of the upper part of the lifting hook (5). The hook lever (15) is perpendicular to the limit stop and arranged horizontally. When the lifting hook (5) rises to the highest position, the hook lever (15) touches the limit stop (14).

2. The lifting hook raising limit device for a monorail crane locomotive according to claim 1, characterized in that, The lifting drive mechanism (8) includes a wire rope winding mechanism, a wire rope (7), two sets of pulleys and a fixing block. The fixing block fixes one end of the wire rope (7) and is fixed on the lifting beam (1). The wire rope (7) passes over the top of one set of pulleys, passes under the movable pulley on the lifting hook (5), passes over the top of another pulley, and finally winds around the wire rope winding mechanism.

3. The lifting hook raising limit device for a monorail crane locomotive according to claim 1, characterized in that, The lifting limit frame includes two fixed plates (9), multiple long bolts (10) and a lower suspension fixed plate (6). The two fixed plates (9) are respectively located on the upper and lower parts of the lifting beam (1), and the two fixed plates (9) are fixed on both sides of the lifting beam (1) using long bolts (10). The lower suspension fixed plate (6) is fixed on the lower fixed plate (9), and the deviation sensor (12) is fixed on the lower suspension fixed plate (6).

4. The lifting hook raising limit device for a monorail crane locomotive according to claim 1, characterized in that, The limit stop (14) is fixed to the contact rod of the deviation sensor (12) using clamping bolts.

5. The lifting hook raising limit device for a monorail crane locomotive according to claim 3, characterized in that, The lower suspension fixing plate (6) includes a vertical part, a horizontal part and a triangular reinforcing plate (11). The vertical part is fixed perpendicularly to the horizontal part, and the horizontal part is fixed to the lower fixing plate (9) by bolts. The triangular reinforcing plate (11) completely fixes the horizontal part and the vertical part together.

6. The lifting hook raising limit device for a monorail crane locomotive according to claim 1, characterized in that, The output of the misalignment sensor (12) is connected to the PLC, and the output of the PLC is connected to the winding mechanism of the wire rope winding mechanism.

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