Safe, efficient and energy-saving mine hoisting equipment
The dual balance wheel and hydraulic brake system in mine shaft elevators address balance and safety issues, reducing energy use and ensuring prompt alerts for anomalies, enhancing operational stability and safety.
Patent Information
- Application Number
- CN202510743264.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-05
- Publication Date
- 2025-07-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing mine hoists have problems such as high energy consumption, poor balance performance, and insufficient safety protection, especially the uneven force of the wire rope, intensified wear, increased load on the winch, insufficient braking reliability, and lack of real-time monitoring and alarm mechanism, which leads to unstable lifting process and safety hazards.
The multi-weight balance system and brake monitoring mechanism are adopted to achieve gravity balance, energy consumption reduction and safety monitoring of the lifting process through dual balance wheels, dual reel structures, hydraulically driven brakes and trigger switches, including the design of double balanced wire ropes, container weight bodies and hoist weight bodies, combined with the use of friction pads and tail ropes to stabilize the lifting process.
The gravity balance of the lifting process is achieved, energy consumption is reduced, efficiency and safety is improved, stability of the lifting process is ensured and real-time alarm is achieved, and the tension fluctuations of the wire rope and safety hazards are reduced.
Smart Images
Figure CN120308796A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mining machinery, and in particular to a safe, efficient and energy-saving mine hoisting device. Background Art
[0002] Existing mine hoists have problems such as high energy consumption, poor balance performance, and insufficient safety protection. Traditional hoists rely only on a single hoisting steel wire rope to tow the hoisting container, which easily leads to uneven stress and increased wear of the steel wire rope. At the same time, due to the lack of an effective counterweight balance system, the load on the winch increases, resulting in a significant increase in energy consumption. At the same time, the braking reliability of existing equipment is insufficient, and there is a lack of a real-time monitoring and warning mechanism. When the hoisting container has an abnormality (such as jamming), it is difficult to detect and handle it in time, posing a safety hazard. In addition, the tension of the steel wire rope fluctuates greatly during the hoisting process, affecting the hoisting stability and efficiency. It is urgent to achieve gravity balance, energy consumption reduction, and safety performance improvement through structural optimization. Summary of the Invention
[0003] In view of the defects of poor balance performance, high energy consumption, and insufficient safety protection of existing mine hoists, a safe, efficient and energy-saving mine hoist is provided. Through a multiple counterweight balance system and a braking monitoring mechanism, gravity balance during the hoisting process is achieved, energy consumption is reduced, and hoisting efficiency is improved.
[0004] The present invention is realized by the following technical solutions: A safe, efficient and energy-saving mine hoisting device includes a winch, a hoisting crown block, and a hoisting container. The hoisting steel wire rope wound on the winch drum is connected to the hoisting container after being guided by the hoisting crown block. It is characterized in that: it further includes a balance crown block, a brake, and a container counterweight. The brake includes a brake disc and a brake caliper for clamping the brake disc. The balance crown block is coaxially arranged with the brake disc. The brake caliper is driven by a hydraulic system, and the brake caliper is controlled by pressure oil to clamp or release the brake disc to achieve fast and reliable braking. The hoisting container is connected to the container counterweight through a balance steel wire rope guided by the balance crown block.
[0005] Preferably, in order to balance the traction of the hoisting steel wire rope and the balance steel wire rope on the hoisting container, two balance crown blocks and two balance steel wire ropes are provided. The hoisting steel wire rope is connected to the center point of the upper part of the hoisting container. One end of the two balance steel wire ropes is connected to both sides of the center point of the upper part of the hoisting container, and the other end is connected to the container counterweight.
[0006] Preferably, to further improve the balance performance and safety, the winch adopts a double-drum structure, two hoisting crown blocks and two hoisting steel wire ropes are provided. The hoisting steel wire rope wound on one drum is connected to the hoisting container after being guided by one hoisting crown block, and the hoisting steel wire rope wound on the other drum is connected to the winch counterweight after being guided by the other hoisting crown block.
[0007] Preferably, the winch counterweight is located below the container counterweight. The longitudinal interval between the container counterweight and the winch counterweight is preferably 10-50 cm, which can not only avoid movement interference but also optimize the center of gravity distribution of the counterweight system. A wire rope through-hole is longitudinally provided in the center of the container counterweight, and the lifting wire rope connecting the winch counterweight passes through the wire rope through-hole to connect the winch counterweight.
[0008] Preferably, an alarm signal generating module is embedded in the container counterweight, an alarm signal receiving module is provided inside the mine, a winch controller and an alarm are provided on the wellhead ground. The alarm signal receiving module is electrically connected to the winch controller and the alarm. A trigger switch electrically connected to the alarm signal generating module is embedded and installed at the lower part of the container counterweight. The trigger switch is a travel switch. When the lifting container gets stuck or has other abnormalities, the winch counterweight continues to move upward under the drive of the winch, while the container counterweight stops moving upward due to the jam, triggering the switch to connect the circuit, and sending a wireless alarm signal through the alarm signal generating module.
[0009] Preferably, a friction lining is embedded in the V-shaped groove of the balance sheave to increase the friction coefficient between the balance wire rope and the balance sheave, avoid the balance wire rope from slipping during the lifting process, and ensure the stable transmission of the balance force.
[0010] Preferably, a tail rope is connected below the lifting container and the container counterweight to balance the weight of the balance wire rope, reduce the tension fluctuation during the lifting process, and improve the system stability.
[0011] Preferably, in order to make the tail rope avoid the central position and connect the lifting wire rope of the winch counterweight, two tail rope through-holes are longitudinally provided in the winch counterweight, and the two ends of the two tail ropes are respectively connected below the lifting container and the container counterweight through the tail rope through-holes.
[0012] Preferably, the axles of the two balance sheaves are installed at an angle of 120-160° on a horizontal plane, so that the distance between the balance wire ropes connecting the lifting container is greater than the distance between the balance wire ropes connecting the container counterweight, adapting to the structural differences between the lifting container and the counterweight, and optimizing the balance effect.
[0013] Preferably, the lifting container is a cage, a skip, a mine car or a kibble.
[0014] The beneficial effects of the present invention are as follows: (1) Gravity balance optimization: Through the structure of double balance sheaves, double balance wire ropes and counterweights (container counterweight, winch counterweight), the gravity balance of the lifting container is realized, the wire rope tension fluctuation is reduced, and the stability is improved.
[0015] (2) Energy consumption reduction: The counterweight system shares the load of the winch, and the double-drum structure further balances the torque, reducing the energy consumption.
[0016] (3) Reliable braking: The hydraulic-driven brake caliper cooperates with the brake disc to achieve fast and precise braking, improving safety.
[0017] (4) Real-time monitoring and alarm: The trigger switch is linked with the alarm module. When abnormalities such as the hoisting container getting stuck occur, an alarm signal is sent in real time to prevent the accident from expanding.
[0018] (5) Stable structure: The friction lining of the balance sheave prevents the steel wire rope from slipping, and the balance wire rope balances the weight of the steel wire rope, reducing the tension fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional structure schematic diagram of Embodiment 1 of the present invention; Figure 2 It is a three-dimensional structure schematic diagram of Embodiment 2 of the present invention; Figure 3 It is Figure 2 The enlarged view of the structure of part A of Figure 4 It is Figure 2 The enlarged view of the structure of part B of Figure 5 It is a three-dimensional structure schematic diagram of the balance sheave, brake disc and brake caliper of the present invention; Figure 6 It is a three-dimensional structure schematic diagram of the partially cut balance sheave of the present invention; Figure 7 It is a schematic diagram of the installation angle of two balance sheaves in Embodiment 1 of the present invention; Figure 8 It is a schematic diagram of the overall cut structure of the container counterweight and the winch counterweight in Embodiment 1 of the present invention; Figure 9 It is Figure 8 The enlarged view of the structure of part C of
[0020] In the figure, 1 - winch, 2 - drum, 3 - hoisting sheave, 4 - hoisting container, 5 - hoisting wire rope, 6 - balance sheave, 7 - brake disc, 8 - brake caliper, 9 - balance wire rope, 10 - container counterweight, 11 - winch counterweight, 12 - wire rope through hole, 13 - alarm signal generating module, 14 - alarm signal receiving module, 15 - winch controller, 16 - alarm, 17 - trigger switch, 18 - tail rope through hole, 19 - tail rope, 20 - friction lining. DETAILED DESCRIPTION OF THE INVENTION
[0021] The following describes in detail the embodiments of the technical solution of the present invention with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.
[0022] Embodiment 1: As shown in FIGS. 1 and 8, a safe, efficient and energy-saving mine hoisting device includes a hoist 1 with a single-drum structure, a hoisting crown block 3 and a hoisting container 4. The hoisting steel wire rope 5 wound around the drum 2 of the hoist 1 is connected to the center point of the upper part of the hoisting container 4 after being guided by the hoisting crown block 3. It also includes two balance crown blocks 6 and two balance steel wire ropes 9. One end of the two balance steel wire ropes 9 is connected to both sides of the center point of the upper part of the hoisting container 4. After being respectively guided by the two balance crown blocks 6, the other end is connected to both sides of the center point of the upper part of the container counterweight 10. Each balance crown block 6 is equipped with a brake. The brake includes a brake disc 7 and a brake caliper 8 that clamps the brake disc 7. The brake caliper 8 is driven by a hydraulic system to perform the clamping or releasing operation. When the hoisting container 4 arrives at the position or needs to stop, the hydraulic system drives the brake caliper 8 to clamp the brake disc 7 to restrict the rotation of the balance crown block 6. A friction lining 20 is embedded in the V-groove of the balance crown block 6. A tail rope 19 is connected under the hoisting container 4 and the container counterweight 10.
[0023] Embodiment 2: As shown in FIGS. 2 to 9, a safe, efficient and energy-saving mine hoisting device includes a hoist 1 with a double-drum structure, a hoisting container 4, two hoisting crown blocks 3, two hoisting steel wire ropes 5, a hoist counterweight 11, two balance crown blocks 6, two balance steel wire ropes 9 and a container counterweight 10. The hoisting steel wire rope 5 wound around one drum 2 of the hoist 1 is connected to the center point of the upper part of the hoisting container 4 after being guided by the hoisting crown block 3, and the hoisting steel wire rope 5 wound around the other drum 2 is connected to the center point of the upper part of the hoist counterweight 11 after being guided by the hoisting crown block 3. The two balance steel wire ropes 9 guided by the two balance crown blocks 6, one end is connected to both sides of the center point of the upper part of the hoisting container 4, and the other end is connected to both sides of the center point of the upper part of the container counterweight 10. The hoist counterweight 11 is below the container counterweight 10. The container counterweight 10 and the hoist counterweight 11 are longitudinally spaced 20 cm apart. A steel wire rope through-hole 12 is longitudinally provided at the center of the container counterweight 10. The hoisting steel wire rope 5 connecting the hoist counterweight 11 passes through the steel wire rope through-hole 12 to connect the hoist counterweight 11.
[0024] Two tail ropes 19 with the same specification as the balance steel wire ropes 9 are connected under the hoisting container 4 and the container counterweight 10. Two tail rope through-holes 18 are longitudinally provided on both sides of the center point of the hoist counterweight 11. The two tail ropes 19 connecting the hoisting container 4 and the container counterweight 10 respectively pass through the two tail rope through-holes 18.
[0025] Each balanced crown block 6 is equipped with a brake, which includes a brake disc 7 and a brake caliper 8 for clamping the brake disc 7. The brake caliper 8 is driven by a hydraulic system for clamping or releasing operations. When the hoisting container 4 is in place or needs to stop, the hydraulic system drives the brake caliper 8 to clamp the brake disc 7 to restrict the rotation of the balanced crown block 6.
[0026] An alarm signal generating module 13 is embedded in the container counterweight 10. An alarm signal receiving module 14 is set inside the mine, and a hoist controller 15 and an alarm 16 are set on the wellhead ground. The alarm signal receiving module 14 is electrically connected to the hoist controller 15 and the alarm 16. A trigger switch 17 electrically connected to the alarm signal generating module 13 is embedded and installed at the lower part of the container counterweight 10.
[0027] A friction lining 20 is embedded and installed in the V-groove of the balanced crown block 6. The setting of the friction lining 20 can increase the friction force between the balance wire rope 9 and the balanced crown block 6. The axles of the two installed balanced crown blocks 6 are installed at an angle of 150° on a horizontal plane. Such installation can ensure that the spacing of the balance wire ropes 9 on the side connecting the hoisting container 4 is wide, and the spacing of the balance wire ropes 9 on the side connecting the container counterweight 10 is narrow, meeting the design requirements of the wide hoisting container 4 and the narrow container counterweight 10.
[0028] The working principle and operation steps of the present invention are described below with reference to the accompanying drawings: I. Normal hoisting / lowering process (1) Power drive: Single-drum mode (Embodiment 1): The drum 2 of the hoist 1 winds the hoisting wire rope 5, and after being guided by the hoisting crown block 3, it pulls the hoisting container 4 to move up or down.
[0029] Double-drum mode (Embodiment 2): One drum 2 pulls the hoisting container 4 through the hoisting wire rope 5, and the other drum 2 is connected to the hoist counterweight 11 through the hoisting wire rope 5. The weight of the counterweight is used to balance the moment and reduce the load of the hoist 1.
[0030] (2) Gravity balance: The hoisting container 4 is connected to the container counterweight 10 through two balance wire ropes 9, and the balance wire ropes 9 are guided by two balanced crown blocks 6 (Figure 2, Figure 7). The axles of the balanced crown blocks 6 are installed at an angle of 150°, making the spacing of the balance wire ropes 9 on the side of the hoisting container 4 wide, adapting to the container structure and optimizing the balance effect.
[0031] The tail rope 19 is connected below the hoisting container 4 and the container counterweight 10 to balance the weight of the balance steel wire rope 9 and reduce the tension fluctuation during hoisting (Figures 4 and 8).
[0032] (3)Brake control: When the hoisting container 4 arrives at the position or an emergency stop is required, the hydraulic system drives the brake caliper 8 to clamp the brake disc 7. The brake disc 7 is coaxial with the balance crown block 6, thereby locking the balance crown block 6 to achieve rapid braking (Figure 5).
[0033] II. Abnormal situation monitoring and warning (taking the hoisting container jamming as an example) (1)Trigger mechanism: If the hoisting container 4 jams due to a fault, the winch 1 continues to drive the winch counterweight 11 to move upward (double-drum mode), but the container counterweight 10 stops moving due to the jamming of the hoisting container 4, and a relative displacement occurs between the two.
[0034] The trigger switch 17 (travel switch) at the lower part of the container counterweight 10 is triggered, closing the circuit (Figures 8, Figure 9 ).
[0035] (2)Alarm response: The trigger switch 17 is electrically connected to the alarm signal generation module 13, sending a wireless signal to the alarm signal receiving module 14 in the mine.
[0036] The alarm signal receiving module 14 transmits the signal to the winch controller 15 and the alarm 16 at the wellhead. The winch controller 15 immediately stops the machine, and the alarm 16 gives an audible and visual alarm to prompt the staff to handle it (Figures 2 and 8).
[0037] III. Cooperative action of key components Friction lining 20: Embedded in the V-groove of the balance crown block 6 to increase the friction between the balance steel wire rope 9 and the crown block, prevent slipping, and ensure the stable transmission of the balance force (Figure 6).
[0038] Counterweight spacing: The container counterweight 10 and the winch counterweight 11 are longitudinally spaced 20 cm apart (Embodiment 2) to avoid movement interference and optimize the center of gravity distribution (Figure 8).
[0039] Through the above principle, the present invention realizes the gravity balance, energy consumption reduction, reliable braking and real-time abnormal warning during the hoisting process, significantly improving the safety and efficiency of mine hoisting.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.
Claims
1. A safe, efficient and energy-saving mine hoisting device, comprising a hoist (1), a hoisting crown block (3) and a hoisting container (4). The hoisting steel wire rope (5) wound around the drum (2) of the hoist (1) is connected to the hoisting container (4) after being guided by the hoisting crown block (3). It is characterized in that: It also includes a balance crown block (6), a brake, and a container counterweight (10); the brake includes a brake disc (7) and a brake caliper (8) for clamping the brake disc (7), the balance crown block (6) is coaxially arranged with the brake disc (7), and the brake caliper (8) is driven by a hydraulic system; the hoisting container (4) is connected to the container counterweight (10) through a balance wire rope (9) guided by the balance crown block (6).
2. The safe, efficient and energy-saving mine hoisting equipment according to claim 1, characterized in that: Two balance crown blocks (6) and two balance wire ropes (9) are provided. The hoisting wire rope (5) is connected to the upper center point of the hoisting container (4). One end of each of the two balance wire ropes (9) is connected to both sides of the upper center point of the hoisting container (4), and the other end is connected to the container counterweight (10).
3. The safe, efficient and energy-saving mine hoisting equipment according to claim 2, characterized in that: The winch (1) adopts a double-drum structure, with two hoisting crown blocks (3) and two hoisting wire ropes (5) provided. The hoisting wire rope (5) on one drum (2) is connected to the hoisting container (4) through the hoisting crown block (3), and the hoisting wire rope (5) on the other drum (2) is connected to the winch counterweight (11) through the hoisting crown block (3).
4. The safe, efficient and energy-saving mine hoisting equipment according to claim 3, wherein: The winch counterweight (11) is located below the container counterweight (10), with a longitudinal interval of 10 - 50 cm between them; a wire rope through hole (12) is provided at the center of the container counterweight (10), and the hoisting wire rope (5) connecting the winch counterweight (11) passes through the wire rope through hole (12).
5. The safe, efficient and energy-saving mine hoisting equipment according to claim 4, wherein: An alarm signal generating module (13) is embedded in the container counterweight (10), an alarm signal receiving module (14) is provided in the mine, and a winch controller (15) and an alarm (16) are provided at the wellhead; a trigger switch (17) is embedded at the lower part of the container counterweight (10), and the trigger switch (17) is electrically connected to the alarm signal generating module (13).
6. The safe, efficient and energy-saving mine hoisting equipment according to claim 5, characterized in that: A friction lining (20) is embedded in the V-groove of the balance crown block (6).
7. The safe, efficient and energy-saving mine hoisting equipment according to claim 6, characterized in that: A tail rope (19) is connected below the hoisting container (4) and the container counterweight (10).
8. The safe, efficient and energy-saving mine hoisting equipment according to claim 7, characterized in that: Two tail rope through holes (18) are provided longitudinally on the winch counterweight (11), and the two tail ropes (19) are respectively connected to the hoisting container (4) and the container counterweight (10) through the tail rope through holes (18).
9. The safe, efficient and energy-saving mine hoisting equipment according to claim 2, characterized in that: The axles of the two balance crown blocks (6) are installed at an angle of 120 - 160° in the horizontal plane.
10. The safe, efficient and energy-saving mine hoisting equipment according to claim 1, characterized in that: The hoisting container (4) is a cage, a skip, a mine car, or a kibble.