Ultra-deep well winding-friction composite depth-adaptive hoisting system and method

Abstract

Disclosed in the present invention is an ultra-deep well winding-friction composite depth-adaptive hoisting system, comprising an active driving device, a passive friction device, a guide device and a rope winding and storage device which are arranged in sequence, wherein a steel wire rope is led from the rope winding and storage device and guided through the guide device into the active driving device, the steel wire rope is wound multiple times between the active driving device and the passive friction device before being unwound from the active driving device, and the unwound steel wire rope is connected to a hoisting container; the active driving device is configured to provide a traction force for the steel wire rope; the passive friction device is configured to provide a frictional force for the steel wire rope; the guide device is configured to change the direction of the steel wire rope; and the rope winding and storage device is configured to wind and unwind the steel wire rope. The present invention can effectively improve the friction of the steel wire rope, effectively reduce the tension in the steel wire rope at a winding drum, and greatly reduce the interlayer pressure of the winding drum by means of rewinding friction generated as the steel wire rope is wound back and forth between an active friction drum and a passive friction drum.

Description

A depth-adaptive lifting system and method for ultra-deep wells combining winding and friction Technical Field

[0001] This invention relates to the field of lifting system technology, and in particular to an ultra-deep well entanglement and friction composite depth adaptive lifting system and method. Background Technology

[0002] The hoisting system is responsible for hoisting coal, personnel, and materials. As the mining depth continues to increase, the winding hoisting system is more suitable for deep mining than the friction hoisting system. However, the multi-layer winding method of the winding hoisting system will cause the wire rope to be squeezed due to the weight of the material and the weight of the wire rope itself. This will significantly reduce the service life of the wire rope. Moreover, under high tension and multi-layer winding, the probability of wire rope winding errors will greatly increase. This seriously affects the working safety of the hoisting system, makes the wire rope replacement more frequent, and affects the working efficiency and economic benefits of the mine.

[0003] Chinese patent application CN220702963U describes a single-rope winding mine hoist that utilizes a tightening mechanism and an anti-overlapping limit component to work together to trigger an alarm and stop the hoist when overlapping occurs. However, this device only prevents and alarms against overlapping, and its safety and reliability are insufficient.

[0004] Chinese patent application CN217708476U discloses an interlayer transition device for a drum in an ultra-deep mine hoisting system. The provided interlayer transition device enables the wire rope near the rope stop plate to smoothly change direction and climb to the next layer, but it cannot improve the situation of mutual compression of the wire ropes between layers under high tension. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a combined deep-adaptive lifting system and method for ultra-deep wells using winding and friction, thereby solving the technical problems in existing technologies.

[0006] This invention provides an ultra-deep well winding and friction composite depth adaptive lifting system, comprising: an active drive device, a passive friction device, a guide device, and a winding and storing device arranged in sequence;

[0007] The wire rope is drawn from the winding and storing device and enters the active drive device via the guide device. After being wound multiple times between the active drive device and the passive friction device, the wire rope is unwound from the active drive device and connected to the lifting container. The active drive device is used to provide the traction force of the wire rope; the passive friction device is used to provide the friction force of the wire rope; the guide device is used to change the direction of the wire rope; and the winding and storing device is used to reel in and unwind the wire rope.

[0008] Furthermore, the active drive device includes: a pair of active friction drums, a reducer, and a first motor; the pair of active friction drums are arranged symmetrically in parallel; the motor drives the pair of active friction drums to rotate through the reducer.

[0009] Furthermore, the passive friction device includes: a pair of symmetrically arranged passive friction drums; each passive friction drum has a single rope groove; the axes of the passive friction drum and the active friction drum on the same side are parallel, the passive friction drum is inclined, and the rope outlet and rope inlet of the passive friction drum are respectively located in the radial direction of the rope groove at the rope outlet and the rope groove at the rope inlet of the active friction drum.

[0010] Furthermore, the formula for calculating the diameter of the passive friction drum is as follows:

[0011]

[0012] In the formula, D2 is the diameter of the passive friction drum; L is the center distance between two adjacent rope grooves of the active friction drum; and D1 is the diameter of the active friction drum.

[0013] Furthermore, the passive friction device includes: a pair of symmetrically arranged passive friction drums; the passive friction drums have one less rope groove than the active friction drums; the axes of the passive friction drums and the active friction drums on the same side are parallel, and the rope grooves of the passive friction drums and the active friction drums are staggered.

[0014] Furthermore, the center distance between the rope grooves of the passive friction drum and the active friction drum is L / 2, where L is the center distance between two adjacent rope grooves of the active friction drum.

[0015] Furthermore, the guiding device includes: a pair of guide wheels and a hydraulic cylinder; the axes of the guide wheels, the passive friction drum and the active friction drum on the same side are arranged in parallel; the hydraulic cylinder is vertically arranged below the guide wheels, and the hydraulic cylinder pushes the guide wheels to move along the axial direction of the hydraulic cylinder.

[0016] Furthermore, the active drive device also includes: a reversing gear set and a brake; the reversing gear set is disposed between two active friction drums, with the active friction drum closer to the motor being the active side; the other active friction drum is the driven side, the motor drives the active friction drum on the active side to rotate, and the active friction drum on the active side drives the active friction drum on the driven side to rotate in the opposite direction through the reversing gear set; the brake is disposed on the active friction drum on the driven side to brake the rotation of the active friction drum on the driven side; the winding and storing device includes: a pair of winding drums, a reversing gear set and a brake; the winding drum on the same side as the active friction drum on the active side drives the other winding drum to rotate in the opposite direction through the reversing gear set; the brake is disposed on the other winding drum to brake the rotation of the winding drum.

[0017] This invention also provides a method for adaptive depth lifting of ultra-deep wells using a combination of winding and friction, applicable to the aforementioned ultra-deep well adaptive depth lifting system using a combination of winding and friction. The method includes:

[0018] The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the hoisting container. The control motor and the winding and storing device simultaneously wind and unwind the wire rope, thus raising or lowering the hoisting container.

[0019] During the ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum can be adjusted to adjust the tension of the wire rope drawn out by the winding and storing device.

[0020] This invention also provides a method for adaptive depth lifting of ultra-deep wells using a combination of winding and friction, applicable to the aforementioned ultra-deep well adaptive depth lifting system using a combination of winding and friction. The method includes:

[0021] The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the lifting container. The motor controls the winding and unwinding of the wire rope on the active side, and the reversing gear set enables the lifting containers on both sides to move up and down relative to each other.

[0022] During ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum is adjusted to adjust the tension of the wire rope drawn out by the winding and storing device; the start and stop status of the active friction drum on the driven side is controlled by the brake to adjust the relative position of the lifting containers on both sides.

[0023] The beneficial effects of this invention are:

[0024] This invention utilizes a reciprocating friction mechanism where the wire rope winds between an active friction drum and a passive friction drum. This effectively increases the friction of the wire rope while reducing tension at the winding drum, significantly lowering interlayer pressure. The invention's precise positioning of the passive and active friction drums and the appropriate groove size effectively reduce the probability of wire rope mis-winding on the winding drum. By mounting a guide wheel on the hydraulic rod of a hydraulic cylinder, the height of the guide wheel can be changed in real time by extending and retracting the hydraulic rod. This allows for adjustment of the tension difference between the two ends of the active friction drum, adjusting the tension of the wire rope drawn out by the winding and storing device, thus effectively regulating the wire rope tension at the winding drum end. Attached Figure Description

[0025] The features and advantages of the invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the invention in any way. In the drawings:

[0026] Figure 1 is a schematic diagram of the single-layer winding structure between the active friction drum and the passive friction drum provided in an embodiment of the present invention;

[0027] Figure 2 is a front view of the positional relationship between the active friction drum and the passive friction drum during single-layer winding according to an embodiment of the present invention;

[0028] Figure 3 is a top view of the positional relationship between the active friction drum and the passive friction drum during single-layer winding according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of the wire rope winding method on the active friction drum and the passive friction drum provided in the embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of the multi-layer winding structure between the active friction drum and the passive friction drum provided in an embodiment of the present invention;

[0031] Figure 6 is a diagram showing the positional relationship between the active friction drum and the passive friction drum during multi-layer winding according to an embodiment of the present invention;

[0032] Figure 7 is a schematic diagram of the multi-layer winding method of steel wire rope on the active friction drum and the passive friction drum provided in the embodiment of the present invention;

[0033] Figure 8 is a schematic diagram of the structure with a reversing gear set and a brake provided in an embodiment of the present invention;

[0034] Figure 9 is a schematic diagram of another structure with a reversing gear set and a brake provided in an embodiment of the present invention;

[0035] Figure 10 is a schematic diagram of the series connection of the reversing gear set provided in an embodiment of the present invention;

[0036] Figure 11 is a schematic diagram of the parallel connection of the reversing gear set provided in an embodiment of the present invention;

[0037] Figure 12 is a schematic diagram of the hydraulic rod extending to change the wire rope envelope angle according to an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The present invention will be further illustrated below with reference to specific embodiments. Those skilled in the art should understand that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Modifications to the present invention in various equivalent forms all fall within the scope defined by the appended claims.

[0040] As shown in Figures 1-12, the present invention provides an ultra-deep well winding and friction composite depth adaptive lifting system, comprising: an active driving device, a passive friction device, a guiding device, and a winding and storing rope device arranged in sequence.

[0041] The wire rope 5 is led out from the winding and storing device, guided by the guide device, and enters the active drive device. After being wound multiple times between the active drive device and the passive friction device, the wire rope 5 is unwound from the active drive device and connected to the lifting container. The active drive device provides the traction force of the wire rope 5; the passive friction device provides the friction force of the wire rope 5; the guide device is used to change the direction of the wire rope 5; the winding and storing device is used to wind and unwind the wire rope 5, as shown in Figure 1. The winding and storing device may have a motor to provide auxiliary traction force for the wire rope 5; as shown in Figure 9, the winding and storing device may also not have a motor, and through the overall system setup, the traction force of the wire rope 5 is provided only by the active drive device.

[0042] As shown in Figure 1, the active drive device includes: a motor 11, a reducer 12, a coupling 13, a bearing 14, a connecting shaft 15, and an active friction drum 16. The motor 11, reducer 12, and bearing 14 are fixed on the platform, and two active friction drums 16 are symmetrically and coaxially mounted between the three bearings 14 through the connecting shaft 15. The motor 11, reducer 12, coupling 13, and active friction drums 16 are coaxially arranged. The motor 11 drives the active friction drums 16 to rotate through the reducer 12 and coupling 13. The rotation of the active friction drums 16 can drive the steel wire rope 5 wound on it to move.

[0043] The passive friction device includes: a passive friction drum 21, a connecting shaft 22, a bearing 23, and a limiter 24; the two passive friction drums 21 are arranged in a figure-eight shape, and one passive friction drum 21 is mounted between the two bearings 23 via the connecting shaft 22; the limiter 24 is set between the passive friction drum 21 and the bearing 23 to limit the position of the passive friction drum 21.

[0044] As shown in Figures 2 and 3, the active friction drum 16 has two rope grooves, and the passive friction drum 21 has one rope groove. The active friction drum 16 and the passive friction drum 21 are arranged at a certain angle along their respective friction drum cross-sections, that is, the passive friction drum 21 is inclined, so that the rope outlet and rope inlet of the passive friction drum 21 are respectively in the radial direction of the two rope grooves of the active friction drum 16.

[0045] As shown in Figure 2, the formula for calculating the diameter of the passive friction drum is:

[0046]

[0047] In the formula, D2 is the diameter of the passive friction drum; L is the center distance between two adjacent rope grooves of the active friction drum; and D1 is the diameter of the active friction drum.

[0048] As shown in Figure 4, the wire rope 5 is wound on the active friction drum 16 and the passive friction drum 21 in the following manner: the wire rope 5 is first wound into one rope groove of the active friction drum 16, then wound into the rope groove of the passive friction drum 21, and finally wound into the other rope groove of the active friction drum 16.

[0049] As shown in Figure 5-7, another structure of the active friction drum 16 and the passive friction drum 21 is that the shafts are arranged in parallel. Both the active friction drum 16 and the passive friction drum 21 have multiple rope grooves, and the active friction drum 16 has one more rope groove than the passive friction drum 21.

[0050] As shown in Figure 6, the center distance between two adjacent rope grooves of the active friction drum 16 is L, and the center distance between the rope grooves of the active friction drum 16 and the passive friction drum 21 during installation is L / 2.

[0051] As shown in Figure 7, the wire rope 5 starts from the lifting container and winds around the active friction drum 16. After winding multiple times between the active friction drum 16 and the passive friction drum 21, it exits from the active friction drum 16. The specific winding direction is: A→B→C→D→E→F→G→H.

[0052] As shown in Figures 1, 5, 8, 9, and 12, the guiding device includes: a guide wheel 31, a connecting shaft 32, a bearing 33, a guide rail bracket 34, and a hydraulic cylinder 35; the guide rail bracket 34 is vertically arranged; the top of the hydraulic rod of the hydraulic cylinder 35 presses against the bearing 33; the guide wheel 31 is mounted between the two bearings 33 via the connecting shaft 32, and the guide wheel 31 moves up and down along the guide rail bracket 34 by the extension and retraction of the hydraulic cylinder 35.

[0053] As shown in Figure 12, the height of the guide wheel 31 can be adjusted by adjusting the extension and retraction of the hydraulic cylinder 35, thereby changing the envelope angle of the wire rope and making the tension difference between the two ends of the active friction drum adjust the tension of the wire rope drawn out by the winding and storing device.

[0054] As shown in Figures 8-11, the active drive device also includes a reversing gear set 18 and a brake 17. The reversing gear set 18 is disposed between two active friction drums 16 and two winding drums 45. Taking the active friction drum 16 as an example, the active friction drum 16 closer to the motor 11 is the active side; the other active friction drum 16 is the driven side. The motor drives the active friction drum on the active side to rotate, and the active friction drum on the active side drives the active friction drum on the driven side to rotate in the opposite direction through the reversing gear set. The reversing gear set 18 changes the direction of movement of the wire rope 5 to achieve bidirectional transportation such as cages and skips. The reversing gear set 18 includes an active helical gear 181, a steering helical gear 182, and a driven helical gear 183. For active friction drums 16 with different directions of rotation, the reversing gear set 18 can be connected in parallel as shown in Figure 10 and in series as shown in Figure 11. There are two configurations. In the parallel configuration, the shafts of the two active friction drums 16 are parallel, and the two input shafts are coaxially connected to the active helical gear 181 and the passive helical gear 183, respectively. The steering helical gear 182 has helical teeth at both ends, which mesh with the active helical gear 181 and the passive helical gear 183, respectively. In the series configuration, the shafts of the two active friction drums 16 are coaxial, and the two input shafts are coaxially connected to the active helical gear 181 and the passive helical gear 183, respectively. There are two steering helical gears 182, which are arranged opposite to each other and mesh with the active helical gear 181 and the passive helical gear 183, respectively.

[0055] The brake 17 is installed on the driven side active friction drum 16 to brake the driven side active friction drum 16. The brake controls the start and stop status of the driven side active friction drum and adjusts the relative position of the two lifting containers.

[0056] As shown in Figure 1, the winding and storing rope device includes: a motor 41, a reducer 42, a coupling 43, a bearing 44, a winding drum 45, and a connecting shaft 46. The motor 41, reducer 42, coupling 43, and bearing 44 are all fixed on the platform. The winding drum 45 is supported between two bearings 44 via the connecting shaft 46. The motor 41, reducer 42, coupling 43, and winding drum 45 are coaxially connected in series. The motor 41 drives the winding drum 45 to rotate through the reducer 42 and coupling 43. At this time, the winding and storing rope device can also provide a portion of the traction force on the wire rope through the motor 41, assisting the active drive device in lifting the lifting container.

[0057] As shown in Figure 9, the winding and storing rope device also includes a reversing gear set 18 and a brake 17. The reversing gear set 18 is arranged between the two winding drums 45. The reversing gear set 18 enables the winding drum on the active side and the winding drum on the passive side to rotate in opposite directions. The brake 17 in the winding and storing rope device can brake the rotation of the winding drum on the passive side. The brake 17 in the winding and storing rope device and the brake 17 in the active drive device operate synchronously. The relative position of the lifting containers on both sides is adjusted by the brake.

[0058] As shown in Figure 8, based on the winding and storing rope device shown in Figure 9, the motor 41, reducer 42 and coupling 43 can be omitted; since the two lifting containers move in opposite directions, the traction force of the wire rope can be provided by the gravity of the downward-moving lifting container, which can save the motor and reduce cost and power consumption.

[0059] A specific embodiment of the present invention also provides a depth-adaptive lifting method for ultra-deep wells that combines winding and friction, applicable to ultra-deep wells with winding and friction-based depth-adaptive lifting systems where the lifting container moves in the same direction. The method includes:

[0060] The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the hoisting container. The control motor and the winding and storing device simultaneously wind and unwind the wire rope, thus raising or lowering the hoisting container.

[0061] During the ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum can be adjusted to adjust the tension of the wire rope drawn out by the winding and storing device.

[0062] A specific embodiment of the present invention also provides a depth-adaptive lifting method combining winding and friction in ultra-deep wells, applicable to ultra-deep well systems employing this method for lifting containers undergoing anisotropic motion. The method includes:

[0063] The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the lifting container. The motor controls the winding and unwinding of the wire rope on the active side, and the reversing gear set enables the lifting containers on both sides to move up and down relative to each other.

[0064] During ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum is adjusted to adjust the tension of the wire rope drawn out by the winding and storing device; the start and stop status of the active friction drum on the driven side is controlled by the brake to adjust the relative position of the lifting containers on both sides.

[0065] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A depth-adaptive lifting system combining winding and friction in ultra-deep wells, characterized in that, include: The active drive device, passive friction device, guide device, and winding and storing rope device are arranged in sequence. The wire rope is drawn from the winding and storing device and enters the active drive device via the guide device. After being wound multiple times between the active drive device and the passive friction device, the wire rope is unwound from the active drive device and connected to the lifting container. The active drive device is used to provide the traction force of the wire rope; the passive friction device is used to provide the friction force of the wire rope; the guide device is used to change the direction of the wire rope; and the winding and storing device is used to reel in and unwind the wire rope.

2. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 1, characterized in that, The active drive device includes: a pair of active friction drums, a reducer, and a first motor; the pair of active friction drums are arranged symmetrically in parallel; the motor drives the pair of active friction drums to rotate through the reducer.

3. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 2, characterized in that, The passive friction device includes: a pair of symmetrically arranged passive friction drums; each passive friction drum has a single rope groove; the axes of the passive friction drum and the active friction drum on the same side are parallel, the passive friction drum is inclined, and the rope outlet and rope inlet of the passive friction drum are respectively located in the radial direction of the rope groove at the rope outlet and the rope groove at the rope inlet of the active friction drum.

4. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 3, characterized in that, The formula for calculating the diameter of the passive friction drum is: In the formula, D2 is the diameter of the passive friction drum; L is the center distance between two adjacent rope grooves of the active friction drum; and D1 is the diameter of the active friction drum.

5. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 2, characterized in that, The passive friction device includes: a pair of symmetrically arranged passive friction drums; the passive friction drum has one less rope groove than the active friction drum; the axes of the passive friction drum and the active friction drum on the same side are parallel, and the rope grooves of the passive friction drum and the active friction drum are staggered.

6. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 5, characterized in that, The center distance between the rope grooves of the passive friction drum and the active friction drum is L / 2, where L is the center distance between two adjacent rope grooves of the active friction drum.

7. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 3 or 5, characterized in that, The guiding device includes: a pair of guide wheels and a hydraulic cylinder; the axes of the guide wheels, the passive friction drum and the active friction drum on the same side are arranged in parallel; the hydraulic cylinder is vertically arranged below the guide wheels, and the hydraulic cylinder pushes the guide wheels to move along the axis of the hydraulic cylinder.

8. The ultra-deep well winding and friction composite depth adaptive lifting system as described in claim 2, characterized in that, The active drive device further includes: a reversing gear set and a brake; the reversing gear set is disposed between two active friction drums, with the active friction drum closer to the motor being the active side; the other active friction drum is the driven side, the motor drives the active friction drum on the active side to rotate, and the active friction drum on the active side drives the active friction drum on the driven side to rotate in the opposite direction through the reversing gear set; the brake is disposed on the active friction drum on the driven side to brake the rotation of the active friction drum on the driven side; the winding and storing device includes: a pair of winding drums, a reversing gear set and a brake; the winding drum on the same side as the active friction drum on the active side drives the other winding drum to rotate in the opposite direction through the reversing gear set; the brake is disposed on the other winding drum to brake the rotation of the winding drum.

9. A method for adaptive depth lifting of ultra-deep wells using a combination of winding and friction, applicable to the ultra-deep well adaptive depth lifting system using a combination of winding and friction as described in claim 7, characterized in that... The methods include: The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the hoisting container. The control motor and the winding and storing device simultaneously wind and unwind the wire rope, thus raising or lowering the hoisting container. During the ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum can be adjusted to adjust the tension of the wire rope drawn out by the winding and storing device.

10. A method for adaptive depth lifting of ultra-deep wells using a combination of winding and friction, applicable to the ultra-deep well adaptive depth lifting system using a combination of winding and friction as described in claim 8, characterized in that... The methods include: The wire rope is drawn from the winding and storing device, passes through the guide wheel, first goes around the active friction drum, then around the passive friction drum, and is repeatedly wound between the active and passive friction drums. After winding, it is wound off the active friction drum and connected to the lifting container. The motor controls the winding and unwinding of the wire rope on the active side, and the reversing gear set enables the lifting containers on both sides to move up and down relative to each other. During ascent or descent, the height of the guide wheel is adjusted by the extension and retraction of the hydraulic cylinder to change the envelope angle of the wire rope, so that the tension difference between the two ends of the active friction drum is adjusted to adjust the tension of the wire rope drawn out by the winding and storing device; the start and stop status of the active friction drum on the driven side is controlled by the brake to adjust the relative position of the lifting containers on both sides.

Images