Rope guiding method for replacing first rope of mine hoisting system

Abstract

The invention discloses a rope guiding method for replacing a first rope of a mine hoisting system, which does not adopt a mode of guiding a rope head of an old first rope into a rope replacing vehicle through a guiding rope, and adopts a mode of forming pulling force replacement between a hoisting container and a pre-replaced old first rope through an auxiliary rope. The pulling force borne by the rope section of the pre-replaced old first rope is transferred to be borne by the auxiliary rope through the auxiliary rope, so that the rope end of the pre-replaced old first rope above the hoisting container can be directly broken, and the pre-replaced old first rope penetrates into the rope replacing vehicle to realize rope guiding; the rope clamping device is used for clamping and fixedly connecting the rope section of the old first rope above the hoisting container on one side, so that the rope end of the pre-replaced old first rope above the hoisting container on the other side can be directly disconnected, and the old rope penetrates into the rope replacing vehicle to realize rope guiding, and the old rope can be guided into the rope replacing vehicle on the premise of ensuring safe construction and reducing potential safety hazard points; and the rope pulling operation is simple, and the rope pulling device is particularly suitable for a rope pulling procedure when a rope replacing vehicle is adopted to replace a first rope of a mine hoisting system.

Description

Technical Field

[0001] The invention relates to a rope leading method, in particular to a rope leading method suitable for introducing an old first rope into a rope changing vehicle when replacing the first rope of a mine hoisting system, and belongs to the technical field of mine equipment maintenance. Background Art

[0002] Mine hoisting system refers to the system for transporting ore, coal, waste rock or gangue along the shaft of the mine, as well as lifting personnel, equipment and materials. The most widely used mine hoisting system is the wire rope mine hoisting system that uses wire ropes to drive the hoisting container along the shaft or ramp. The commonly used wire rope mine hoisting systems in my country are mainly single-rope winding type and multi-rope friction type.

[0003] The wire rope is the most important component of the wire rope mine hoisting system and plays a vital role in the safe hoisting of the mine. The "Coal Mine Safety Regulations" have set strict regulations on the service life and replacement cycle of the wire rope. For the wire rope mine hoisting system, especially the multi-rope friction mine hoisting system, the replacement of the wire rope is a high-risk, accident-prone, labor-intensive and time-consuming operation. With the application of the wire rope replacement technology using a rope changing vehicle, the current situation of using traditional equipment to replace the wire rope, which takes a long time, requires a lot of people and has great safety hazards, has been greatly improved.

[0004] When a rope-changing car is used to replace the first rope of a mine hoisting system, the old rope is usually introduced into the rope-changing car, and the rope-changing car provides a preset constant pulling force to recover the old rope. That is, the lead rope is first released through the rope-changing car in reverse transportation and then fixed with the old rope at a certain height through a plate clamp. The lead rope is positively tightened by the rope-changing car to loosen the old rope connected to the top of the hoisting container, and then the old rope connected to the top of the hoisting container is cut off. Then the hoist is started, and the rope-changing car is synchronously controlled to forwardly transport and recover the lead rope. During the upward movement of the hoisting container, the rope-changing car pulls the old rope out of the wellhead through the lead rope. When the lead rope and the old rope are fixed at the wellhead, the hoist is stopped, and the disconnected old rope is fixed at the sheave. After removing the plate clamp, the rope-changing car forwardly transports the lead rope out, and the rope head of the old rope is introduced into the rope-changing car, and then the hoist is started, and the rope-changing car is synchronously controlled to provide a preset constant pulling force to recover the old rope. This rope-leading method not only requires multiple forward and reverse start and stop operations of the hoist and the rope-changing vehicle, but the rope-changing vehicle also needs to first thread the rope, then retract the rope, and finally advance the old first rope. This leads to problems such as complex rope-leading operation, many potential safety hazards during operation, and a long operation time. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a rope leading method for replacing the first rope of a mine hoisting system, which can lead the old rope into a rope changing vehicle under the premise of ensuring safe construction and reducing potential safety hazards, and the rope leading operation is simple. The method is particularly suitable for the rope leading process when the first rope of a mine hoisting system is replaced by a rope changing vehicle.

[0006] In order to achieve the above-mentioned purpose, the mine hoisting system includes a hoisting friction wheel controlled to rotate by a hoist, a hoisting container I and a hoisting container II connected by the old first rope through the hoisting friction wheel, and a tail rope connected to the bottom of the hoisting container I and the hoisting container II. When replacing the old first rope, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. After the rope changing vehicle is positioned and parked on the wellhead operating platform corresponding to the position of the hoisting container I, the rope head of the old first rope is not introduced into the rope changing vehicle through the rope when leading the rope. As one of the rope leading methods for replacing the first rope of the mine hoisting system, an auxiliary rope assembly including an auxiliary rope and an auxiliary rope tensioning device is prepared, and the length of the auxiliary rope is greater than the distance between the wellhead and the rear end of the rope changing vehicle. The rope is led by using the auxiliary rope to form a tension replacement method between the hoisting container and the pre-replaced old first rope, which specifically includes the following steps:

[0007] Step 1. Install the auxiliary rope: Start the hoist to lift the lifting container I and position it at the wellhead. Install the auxiliary rope on the pre-replaced old first rope connected to the top of the lifting container I. The pre-replaced old first rope is connected to the top of the tension balancing device through a rope ring. The bottom end of the tension balancing device is connected to the top of the lifting container I. The bottom end of the auxiliary rope is fixedly connected to the bottom end of the tension balancing device or the top of the lifting container I through a bottom connecting fixture. After straightening the auxiliary rope, the top end of the auxiliary rope is fixedly connected to the pre-replaced old first rope through a top connecting fixture.

[0008] Step 2, tension replacement: pre-tension the auxiliary rope through the auxiliary rope tensioning device, then release the tension of the tension balancing device, and relax the pre-replaced old first rope segment between the top connecting fixture and the tension balancing device;

[0009] Step 3, lead the old rope: disconnect the old lead rope to be replaced from the tension balance device at the rope ring, and directly insert the rope head of the old lead rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle, or first pull and collect the rope section of the old lead rope between the top connection fixture and the tension balance device to the wellhead operating platform, and then insert the rope head of the old lead rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle;

[0010] Step 4, remove the auxiliary rope: start the rope-changing vehicle to transport forward and gradually tighten the old first rope, so that the tension borne by the auxiliary rope is gradually transferred to the old first rope tightened by the rope-changing vehicle. After the auxiliary rope is relaxed, stop the forward transportation of the rope-changing vehicle and lock it, remove the bottom connection fixture, and collect the bottom end of the auxiliary rope on the wellhead operating platform, then start the hoist to lower the hoisting container I, and synchronously control the rope-changing vehicle to provide a preset constant tension to recover the old first rope. After the top connection fixture approaches the rope-changing vehicle, stop the hoist and the rope-changing vehicle synchronously, remove the top connection fixture, and remove the auxiliary rope. Start the hoist again to lower the hoisting container I, and synchronously control the rope-changing vehicle to provide a preset constant tension to recover the old first rope.

[0011] And so on, repeat Step 1 to Step 4, and lead and replace other old head ropes in turn.

[0012] As an implementation method of installing the auxiliary rope of the present invention, a method of controlling the lifting container I to rise and fall and installing the auxiliary rope is adopted, specifically:

[0013] After lifting container I and positioning it at the wellhead in Step 1, the bottom end of the auxiliary rope is fixedly connected to the bottom end of the tension balance device or the top of lifting container I through the bottom connection fixture, and then the hoist is started to lower the lifting container I, and the auxiliary rope is lowered by the rope retracting winch. When the length of the lowered auxiliary rope reaches the set length of the auxiliary rope, the hoist and the rope retracting winch are stopped, and then the top end of the auxiliary rope is fixedly connected to the pre-replaced old head rope through the top connection fixture;

[0014] In Step 2, before the auxiliary rope is pre-tensioned by the auxiliary rope tensioning device, the hoist is started to lift the hoisting container I again and position it at the wellhead.

[0015] As another implementation method of installing the auxiliary rope of the present invention, a method of positioning and installing the auxiliary rope by lifting container I is adopted, specifically:

[0016] After lifting container I is lifted and positioned at the wellhead in Step 1, the auxiliary rope is lowered through the rope retracting winch on the derrick where the lifting friction wheel is installed. The bottom end of the auxiliary rope is first fixedly connected to the bottom end of the tension balancing device through the bottom connecting fixture, and then the top end of the auxiliary rope is fixedly connected to the pre-replaced old head rope through the top connecting fixture.

[0017] As a further improvement of the present invention, the number of auxiliary ropes is coordinated with the number of old head ropes to be replaced simultaneously.

[0018] As a further improvement of the present invention, the strength of the auxiliary rope itself is greater than the allowable value of the bearing capacity of the old head rope, and the top connecting fixture and the bottom connecting fixture must meet the bearing capacity requirements of the old head rope.

[0019] As a further improvement of the present invention, the clamping installation position of the bottom connecting fixture is not located on the movable component of the tension balancing device.

[0020] The mine hoisting system based on the rope leading method for replacing the first rope of the mine hoisting system includes a hoisting friction wheel controlled to rotate by a hoist, a hoisting container I and a hoisting container II connected by the old first rope through the hoisting friction wheel, and a tail rope connected to the bottom of the hoisting container I and the hoisting container II. When replacing the old first rope, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. After the rope changing car is positioned and parked on the wellhead operating platform corresponding to the position of the hoisting container I, the rope leading method of introducing the rope head of the old first rope into the rope changing car by the rope leading method is not adopted. As the second rope leading method for replacing the first rope of the mine hoisting system, a rope clamp is prepared, and the rope leading method of positioning the hoisting container is adopted, which specifically includes the following steps:

[0021] Step 1. Position the lifting container: Start the hoist to position the lifting container I at a set height L below the wellhead platform, and the height dimension L is greater than the distance dimension between the wellhead and the rear end of the rope changing vehicle;

[0022] Step 2, install the rope clamp: on the derrick where the lifting friction wheel is installed, clamp and fix the pre-replaced old first rope on the corresponding lifting container II side with other old first ropes on the same side through the rope clamp;

[0023] Step 3, lead the old rope: first pre-tension the other old first ropes on the side of the lifting container I through the tensioning device to loosen the pre-replaced old first rope at the top of the lifting container I, then disconnect the pre-replaced old first rope from the lifting container I at the top of the lifting container I, and pull the rope head of the old first rope disconnected from the lifting container I to the wellhead operating platform through the rope retracting winch, and directly pass the rope head of the old first rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle, or first pull and collect the rope section of the old first rope disconnected from the lifting container I to the wellhead operating platform, and then pass the rope head of the old first rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle;

[0024] Step 4, remove the rope clamp: start the rope changing vehicle to convey forward and gradually tighten the old first rope, then stop the forward conveyance of the rope changing vehicle and lock it, remove the tensioning device and remove all the rope clamps on the lifting container II side, start the hoist to lower the lifting container I, and synchronously control the rope changing vehicle to provide a preset constant pulling force to recover the old first rope;

[0025] And so on, repeat Step 1 to Step 4, and lead and replace other old head ropes in turn.

[0026] The mine hoisting system based on the rope-leading method for replacing the first rope of the mine hoisting system includes a hoisting friction wheel controlled to rotate by a hoist, a hoisting container I and a hoisting container II connected by the old first rope through the hoisting friction wheel, a tail rope connected to the bottom of the hoisting container I and the hoisting container II, and a hoisting first rope lifting device positioned and installed on the hoisting friction wheel derrick, the hoisting first rope lifting device at least includes a first rope lower clamping part corresponding to the hoisting container II side and a first rope upper clamping lifting part, the old first rope corresponding to the hoisting container II side passes through the first rope lower clamping part, and the first rope upper clamping lifting part The lifting part is correspondingly erected above the lower clamping part of the head rope through a translation positioning mechanism. The upper clamping and lifting part of the head rope includes an upper clamping mechanism and a jacking mechanism. When replacing the old head rope, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. It is characterized in that after the rope changing vehicle is positioned and parked on the wellhead operating platform corresponding to the position of the lifting container I, the rope is not led into the rope changing vehicle by the rope lead, but the lifting device of the head rope is used to control the step-by-step lifting of the lifting container to lead the rope, which specifically includes the following steps:

[0027] Step 1. Remove the old rope head: Start the hoist to lift the lifting container I and position it at the wellhead, control the lifting device of the first rope, first control the lower clamping part of the first rope corresponding to the lifting container II to close the action to firmly clamp the old first rope on the corresponding lifting container II side, then control the upper clamping lifting part of the first rope to move horizontally to the top of the lower clamping part of the first rope, and control the upper clamping mechanism of the first rope to firmly clamp the old first rope on the corresponding lifting container II side, then control the lifting mechanism of the upper clamping lifting part of the first rope to move, and lift the old first rope on the lifting container II side. Lifting, after the lifting mechanism reaches the upper limit of the lifting stroke, the clamping mechanism on the first rope that clamps the lifting part on the first rope is controlled to loosen the old first rope on the lifting container II side, and after the lifting mechanism on the first rope that clamps the lifting part is controlled to lower and reset, the clamping mechanism on the first rope is controlled to firmly clamp the old first rope on the corresponding lifting container II side, and the lifting of the old first rope on the lifting container II side is completed for one lifting step. After the lifting step is completed, the pre-replaced old first rope section on the corresponding lifting container I side is relaxed, and the pre-replaced old first rope is disconnected from the lifting container I at the top of the lifting container I;

[0028] Step 2, lead the old rope: repeatedly control the lifting device of the lifting first rope to lift the old first rope on the side of the lifting container II, and lift the old first rope on the side of the lifting container II step by step while lowering the lifting container I until the lowered depth of the lifting container I is greater than the distance between the wellhead and the rear end of the rope changing vehicle, and directly insert the rope head of the old first rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle, or first pull and collect the rope section of the old first rope to the wellhead operating platform, and then insert the rope head of the old first rope into the rope changing vehicle through the front guide rope wheel of the rope changing vehicle, start the hoist to lower the lifting container I, and synchronously control the rope changing vehicle to provide a preset constant pulling force to recover the old first rope;

[0029] And so on, repeat Step 1 to Step 2, and lead and replace other old head ropes in turn.

[0030] As a further improvement of the present invention, when the lower clamping part of the first rope corresponding to the lifting container II side is controlled to close in Step 1 to firmly clamp the old first rope on the corresponding lifting container II side, it selectively clamps only the old first rope that is pre-replaced and does not clamp the old first rope that is not replaced temporarily; when the upper clamping mechanism of the first rope is controlled to firmly clamp the old first rope on the corresponding lifting container II side, it selectively clamps only the old first rope that is pre-replaced and does not clamp the old first rope that is not replaced temporarily.

[0031] Compared with the prior art, the rope-leading method for replacing the first rope of the mine hoisting system does not adopt the method of introducing the rope end of the old first rope into the rope-changing car by means of a rope-leading method. When the auxiliary rope is used to form a tension substitution method between the hoisting container and the pre-replaced old first rope, the tension borne by the rope segment of the pre-replaced old first rope is transferred to the auxiliary rope through the auxiliary rope, so that the rope end of the pre-replaced old first rope above the hoisting container can be directly disconnected and inserted into the rope-changing car to realize rope leading. When the rope is led in a manner of positioning the hoisting container, the rope segment of the old first rope above the hoisting container on one side is clamped and fixedly connected by a rope clamp, so that the rope end of the pre-replaced old first rope above the hoisting container on the other side can be directly disconnected and inserted into the rope-changing car to realize rope leading. The old rope can be introduced into the rope-changing car under the premise of ensuring safe construction and reducing potential safety hazards, and the rope-leading operation is simple, which is particularly suitable for the rope-leading process when the rope-changing car is used to replace the first rope of the mine hoisting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of embodiment 1 of the present invention;

[0033] Figure 2 yes Figure 1 Schematic diagram of the connection structure between the middle auxiliary rope and the old head rope;

[0034] Figure 3 is a schematic diagram of Embodiment 2 of the present invention, wherein L represents the set height dimension of the lifting container I positioned and docked below the wellhead platform;

[0035] Figure 4 It is a schematic diagram of embodiment 3 of the present invention.

[0036] In the figure: 1. Rope retracting and releasing winch; 2. Rope pulling vehicle; 3. Leading rope wheel of rope changing vehicle; 4. Auxiliary rope assembly; 4-1. Auxiliary rope; 4-2. Bottom connecting fixture; 4-3. Top connecting fixture; 5. Old head rope; 6. Lifting friction wheel; 7. Lifting container II; 8. Tail rope; 9. Lifting container I; 9-1. Tension balancing device; 9-2. Rope ring; 10. Rope clamp; 11. Lifting head rope lifting device. DETAILED DESCRIPTION

[0037] In order to simplify the rope-leading process, the present invention does not adopt the method of introducing the rope head of the old head rope 5 into the rope-changing vehicle 2 through the rope-leading method. The present invention is further described below in conjunction with the accompanying drawings.

[0038] Embodiment 1:

[0039] A method for replacing the lead rope of a mine hoisting system, such as Figure 1 As shown, the mine hoisting system includes a hoisting friction wheel 6 controlled to rotate by a hoist, a hoisting container Ⅰ9 and a hoisting container Ⅱ7 connected by an old head rope 5 through the hoisting friction wheel 6, and a tail rope 8 connected to the bottom of the hoisting container Ⅰ9 and the hoisting container Ⅱ7. When replacing the old head rope 5, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. After the rope changing vehicle 2 is positioned and parked on the wellhead operating platform corresponding to the position of the hoisting container Ⅰ9, an auxiliary rope assembly 4 including an auxiliary rope 4-1 and an auxiliary rope tensioning device is prepared for rope leading, and the length of the auxiliary rope 4-1 is greater than the distance between the wellhead and the rear end of the rope changing vehicle 2. The auxiliary rope 4-1 is used to form a tension replacement between the hoisting container and the pre-replaced old head rope 5 to lead the rope, which specifically includes the following steps:

[0040] Step 1, install the auxiliary rope 4-1: Figure 1 As shown, the hoist is started to lift the lifting container Ⅰ9 and position it at the wellhead position, and the auxiliary rope 4-1 is installed on the pre-replaced old head rope 5 connected to the top of the lifting container Ⅰ9, as shown in FIG. Figure 2 As shown, the pre-replaced old head rope 5 is connected to the top of the tension balancing device 9-1 through the rope ring 9-2, the bottom end of the tension balancing device 9-1 is connected to the top of the lifting container Ⅰ9, the bottom end of the auxiliary rope 4-1 is fixedly connected to the bottom end of the tension balancing device 9-1 or the top of the lifting container Ⅰ9 through the bottom connecting fixture 4-2, and after the auxiliary rope 4-1 is straightened, the top end of the auxiliary rope 4-1 is fixedly connected to the pre-replaced old head rope 5 through the top connecting fixture 4-3.

[0041] Step 2, tension replacement: pre-tension the auxiliary rope 4-1 through the auxiliary rope tensioning device, and then release the tension of the tension balancing device 9-1 to relax the pre-replaced old first rope 5 segment between the top connecting fixture 4-3 and the tension balancing device 9-1, that is, the tension borne by the pre-replaced old first rope 5 segment between the top connecting fixture 4-3 and the tension balancing device 9-1 is transferred to the auxiliary rope 4-1.

[0042] Step 3, lead the old rope: disconnect the pre-replaced old head rope 5 from the tension balancing device 9-1 at the rope ring 9-2, and directly insert the rope head of the old head rope 5 into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle, or first pull and collect the rope section of the old head rope 5 between the top connecting fixture 4-3 and the tension balancing device 9-1 to the wellhead operating platform, and then insert the rope head of the old head rope 5 into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle.

[0043] Step 4, remove the auxiliary rope: start the rope-changing vehicle 2 to convey forward and gradually tighten the old first rope 5, so that the tension borne by the auxiliary rope 4-1 is gradually transferred to the old first rope 5 tightened by the rope-changing vehicle 2. After the auxiliary rope 4-1 is relaxed, stop the forward conveyance of the rope-changing vehicle 2 and lock it, then remove the bottom connection fixture 4-2, and collect the bottom end of the auxiliary rope 4-1 on the wellhead operating platform, then start the hoist to lower the hoisting container Ⅰ9, and synchronously control the rope-changing vehicle 2 to provide a preset constant tension to recover the old first rope 5. The recovered old first rope 5 is coiled and collected by the rope-retracting winch 1. After the top connection fixture 4-3 approaches the rope-changing vehicle 2, stop the hoist and the rope-changing vehicle 2 synchronously, remove the top connection fixture 4-3, and remove the auxiliary rope 4-1. Then start the hoist again to lower the hoisting container Ⅰ9, and synchronously control the rope-changing vehicle 2 to provide a preset constant tension to recover the old first rope 5.

[0044] By analogy, repeat Step 1 to Step 4, and guide and replace other old head ropes 5 in turn. The number of auxiliary ropes 4-1 should be coordinated with the number of old head ropes 5 to be replaced simultaneously, that is, when replacing several old head ropes 5 at the same time, several auxiliary ropes 4-1 should be used at the same time. At the same time, to ensure safety, the strength of the auxiliary rope 4-1 itself should be greater than the allowable value of the bearing capacity of the old head rope 5, the top connecting fixture 4-3 and the bottom connecting fixture 4-2 should meet the bearing capacity requirements of the old head rope 5, and the clamping installation position of the bottom connecting fixture 4-2 cannot be located on the movable part of the tension balancing device 9-1.

[0045] As an implementation mode of installing the auxiliary rope 4-1 of the present invention, a method of controlling the lifting and lowering of the lifting container Ⅰ9 and installing the auxiliary rope 4-1 is adopted. Specifically: after the lifting container Ⅰ9 is lifted and positioned at the wellhead in Step 1, the bottom end of the auxiliary rope 4-1 is fixedly connected to the bottom end of the tension balance device 9-1 or the top of the lifting container Ⅰ9 through the bottom connecting fixture 4-2, and then the hoist is started to lower the lifting container Ⅰ9, and the auxiliary rope 4-1 is lowered by the rope retracting winch 1. After the length of the lowered auxiliary rope 4-1 reaches the set length of the auxiliary rope 4-1, the hoist and the rope retracting winch 1 are stopped, and then the top of the auxiliary rope 4-1 is fixedly connected to the pre-replaced old head rope 5 through the top connecting fixture 4-3; before pre-tensioning the auxiliary rope 4-1 by the auxiliary rope tensioning device in Step 2, the hoist is started to lift the lifting container Ⅰ9 again and position it at the wellhead.

[0046] As another implementation mode of installing the auxiliary rope 4-1 of the present invention, a method of positioning and installing the auxiliary rope 4-1 by lifting container Ⅰ9 is adopted. Specifically: after lifting container Ⅰ9 is lifted and positioned and docked at the wellhead in Step 1, the auxiliary rope 4-1 is lowered by the rope-retracting winch 1 on the derrick on which the lifting friction wheel 6 is installed, and the bottom end of the auxiliary rope 4-1 is first fixedly connected to the bottom end of the tension balancing device 9-1 through the bottom connecting fixture 4-2, and then the top end of the auxiliary rope 4-1 is fixedly connected to the pre-replaced old head rope 5 through the top connecting fixture 4-3.

[0047] Embodiment 2:

[0048] A method for replacing the lead rope of a mine hoisting system, such as Figure 3 As shown, the mine hoisting system includes a hoisting friction wheel 6 controlled to rotate by a hoist, a hoisting container Ⅰ9 and a hoisting container Ⅱ7 connected by an old head rope 5 through the hoisting friction wheel 6, and a tail rope 8 connected to the bottom of the hoisting container Ⅰ9 and the hoisting container Ⅱ7. When replacing the old head rope 5, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. After the rope changing vehicle 2 is positioned and parked on the wellhead operating platform corresponding to the position of the hoisting container Ⅰ9, a rope clamp 10 is prepared for rope leading, and the rope is led by positioning the hoisting container, which specifically includes the following steps:

[0049] Step 1, positioning the lifting container: start the hoist to position the lifting container I9 at a set height L below the wellhead platform, and the height dimension L is greater than the distance dimension between the wellhead and the rear end of the rope changing vehicle 2.

[0050] Step 2, install the rope clamp: on the derrick where the lifting friction wheel 6 is installed, the pre-replaced old first rope 5 on the corresponding lifting container II 7 side is clamped and fixedly connected with other old first ropes 5 on the same side through the rope clamp 10.

[0051] Step 3, lead the old rope: first pre-tension the other old first ropes 5 on the side of the lifting container Ⅰ9 through the tensioning device to relax the pre-replaced old first rope 5 on the top of the lifting container Ⅰ9, and then disconnect the pre-replaced old first rope 5 from the lifting container Ⅰ9 at the top of the lifting container Ⅰ9, and pull the rope head of the old first rope 5 disconnected from the lifting container Ⅰ9 to the wellhead operating platform through the rope retracting winch 1, and directly pass the rope head of the old first rope 5 into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle, or first pull and collect the rope section of the old first rope 5 disconnected from the lifting container Ⅰ9 to the wellhead operating platform, and then pass the rope head of the old first rope 5 into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle.

[0052] Step 4, remove the rope clamp: start the rope changing vehicle 2 to transport forward and gradually tighten the old first rope 5, then stop the forward transport of the rope changing vehicle 2 and lock it. After removing the tensioning device, remove all the rope clamps 10 on the side of the lifting container Ⅱ 7, then start the hoist to lower the lifting container Ⅰ 9, and synchronously control the rope changing vehicle 2 to provide a preset constant pulling force to recover the old first rope 5. The recovered old first rope 5 is coiled and collected by the rope retracting winch 1.

[0053] Embodiment 3:

[0054] A method for replacing the lead rope of a mine hoisting system, such as Figure 4 As shown, the mine hoisting system includes a hoisting friction wheel 6 controlled to rotate by a hoist, a hoisting container Ⅰ9 and a hoisting container Ⅱ7 connected by an old head rope 5 through the hoisting friction wheel 6, a tail rope 8 connected to the bottom of the hoisting container Ⅰ9 and the hoisting container Ⅱ7, and a hoisting head rope lifting device 11 positioned and installed on the derrick of the hoisting friction wheel 6. The hoisting head rope lifting device 11 at least includes a head rope lower clamping part corresponding to the hoisting container Ⅱ7 side and a head rope upper clamping lifting part. The old head rope 5 corresponding to the hoisting container Ⅱ7 side passes through the head rope lower clamping part, and the head rope upper clamping lifting part passes through the head rope lower clamping part. The lifting part is correspondingly erected above the lower clamping part of the head rope through a translation positioning mechanism. The upper clamping and lifting part of the head rope includes the upper clamping mechanism and the jacking mechanism. When replacing the old head rope 5, a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom. After the rope changing vehicle 2 is positioned and parked on the wellhead operating platform corresponding to the position of the lifting container Ⅰ9, the rope is not led into the rope changing vehicle 2 by the lead rope. The rope is led by the lifting device 11 of the lifting head rope to control the step-by-step lifting of the lifting container, which specifically includes the following steps:

[0055] Step 1. Remove the old rope head: Start the hoist to lift the lifting container Ⅰ9 and position it at the wellhead, control the lifting first rope lifting device 11, first control the lower clamping part of the first rope corresponding to the lifting container Ⅱ7 to close the action to firmly clamp the old first rope 5 on the corresponding lifting container Ⅱ7 side, then control the upper clamping and lifting part of the first rope to move horizontally to just above the lower clamping part of the first rope, and control the upper clamping mechanism of the first rope to firmly clamp the old first rope 5 on the corresponding lifting container Ⅱ7 side, then control the lifting mechanism of the upper clamping and lifting part of the first rope to move and lift the old first rope 5 on the lifting container Ⅱ7 side, and after the lifting mechanism reaches the upper limit of the lifting stroke, control the upper clamping mechanism of the first rope of the upper clamping and lifting part of the first rope to release For the old leading rope 5 on the side of lifting container Ⅱ7, at this time, the old leading rope 5 on the side of lifting container Ⅱ7 is self-locked and fixed under the clamping action of the lower clamping part of the leading rope on the side of lifting container Ⅱ7. After the jacking mechanism of the clamping and lifting part on the leading rope is controlled to be lowered and reset, the clamping mechanism on the leading rope is controlled to firmly clamp the old leading rope 5 on the side of lifting container Ⅱ7 to complete the lifting of one jacking step of the old leading rope 5 on the side of lifting container Ⅱ7. After the jacking step is completed, the rope section of the pre-replaced old leading rope 5 on the side of lifting container Ⅰ9 is relaxed, and the load of lifting container Ⅰ9 is borne by other old leading ropes 5 on the side of lifting container Ⅰ9 that are not replaced temporarily. The connection between the pre-replaced old leading rope 5 and the tension balancing device 9-1 is disconnected at the rope ring 9-2.

[0056] Step 2, lead the old rope: repeatedly control the lifting device 11 to lift the old first rope 5 on the side of the lifting container Ⅱ7, and the old first rope 5 on the side of the lifting container Ⅱ7 is lifted step by step, while the lifting container Ⅰ9 is lowered, until the depth of the lowering of the lifting container Ⅰ9 is greater than the distance between the wellhead and the rear end of the rope changing vehicle 2, and the rope head of the old first rope 5 is directly inserted into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle, or the rope section of the old first rope 5 is first pulled and collected to the wellhead operating platform, and then the rope head of the old first rope 5 is inserted into the rope changing vehicle 2 through the front guide rope wheel 3 of the rope changing vehicle, and the hoist can be started to lower the lifting container Ⅰ9, and the rope changing vehicle 2 is synchronously controlled to provide a preset constant pulling force to recover the old first rope 5.

[0057] And so on, repeat Step 1 to Step 2, and guide and replace other old head ropes 5 in turn.

[0058] In order to effectively relax the rope section of the pre-replaced old leading rope 5 on the corresponding lifting container Ⅰ9 side, when the lower clamping part of the leading rope on the corresponding lifting container Ⅱ7 side is controlled to close in Step 1 to firmly clamp the old leading rope 5 on the corresponding lifting container Ⅱ7 side, it selectively clamps only the pre-replaced old leading rope 5 and does not clamp the old leading rope 5 that is not replaced temporarily; when the upper clamping mechanism of the leading rope is controlled to firmly clamp the old leading rope 5 on the corresponding lifting container Ⅱ7 side, it selectively clamps only the pre-replaced old leading rope 5 and does not clamp the old leading rope 5 that is not replaced temporarily.

Claims

1. A method for replacing a lead rope in a mine hoisting system, the mine hoisting system comprising a hoisting friction wheel (6) controlled to rotate by a hoisting machine, a hoisting container I (9) and a hoisting container II (7) connected by an old lead rope (5) through the hoisting friction wheel (6), a tail rope (8) connected to the bottom of the hoisting container I (9) and the hoisting container II (7), and a hoisting lead rope lifting device (11) positioned and installed on a derrick of the hoisting friction wheel (6), the hoisting lead rope lifting device (11) comprising at least a lead rope lower clamping portion corresponding to the side of the hoisting container II (7) and a lead rope upper clamping and lifting portion, the old lead rope (5) corresponding to the side of the hoisting container II (7) passes through the lead rope lower clamping portion, the lead rope upper clamping and lifting portion is correspondingly erected above the lead rope lower clamping portion through a translation positioning mechanism, the lead rope upper clamping and lifting portion comprises a lead rope upper clamping mechanism and a jacking mechanism, when replacing the old lead rope (5), a wellhead operating platform is built at the wellhead and a well bottom operating platform is built at the well bottom, characterized in that: After the rope changing vehicle (2) is positioned and parked on the wellhead operating platform corresponding to the position of the lifting container I (9), the rope leading is not conducted by introducing the rope head of the old lead rope (5) into the rope changing vehicle (2) by means of the lead rope, but by using the lead rope lifting device (11) to control the step-by-step lifting of the lifting container, specifically including the following steps: Step 1. Remove the old rope head: Start the hoist to lift the lifting container Ⅰ (9) and position it at the wellhead position, control the lifting first rope lifting device (11), first control the lower clamping part of the first rope corresponding to the lifting container Ⅱ (7) to close and firmly clamp the old first rope (5) on the corresponding lifting container Ⅱ (7) side, then control the upper clamping lifting part of the first rope to move horizontally to the top of the lower clamping part of the first rope, and control the upper clamping mechanism of the first rope to firmly clamp the old first rope (5) on the corresponding lifting container Ⅱ (7), and then control the lifting mechanism of the upper clamping lifting part of the first rope to move and lift the old first rope (5) on the lifting container Ⅱ (7) side. After the lifting mechanism reaches the upper limit of the lifting stroke, the clamping mechanism on the first rope of the first rope is controlled to release the old first rope (5) on the lifting container Ⅱ (7) side. After the lifting mechanism on the first rope is controlled to lower and reset, the clamping mechanism on the first rope is controlled to firmly clamp the old first rope (5) on the corresponding lifting container Ⅱ (7) side, and the lifting of the old first rope (5) on the lifting container Ⅱ (7) side is completed. After the lifting step is completed, the rope section of the pre-replaced old first rope (5) on the corresponding lifting container Ⅰ (9) side is relaxed, and the connection between the pre-replaced old first rope (5) and the lifting container Ⅰ (9) is disconnected at the top of the lifting container Ⅰ (9); Step 2, lead the old rope: repeatedly control the lifting device (11) of the lifting rope to lift the old rope (5) on the side of the lifting container II (7), and the lifting container I (9) is lowered while the old rope (5) on the side of the lifting container II (7) is lifted step by step, until the depth dimension of the lowering of the lifting container I (9) is greater than the distance dimension between the wellhead and the rear end of the rope changing vehicle (2), and the rope head of the old rope (5) is directly inserted into the rope changing vehicle (2) through the front guide rope wheel (3) of the rope changing vehicle, or the rope section of the old rope (5) is first pulled and collected to the wellhead operating platform, and then the rope head of the old rope (5) is inserted into the rope changing vehicle (2) through the front guide rope wheel (3) of the rope changing vehicle, and the hoist is started to lower the lifting container I (9), and the rope changing vehicle (2) is synchronously controlled to provide a preset constant pulling force to recover the old rope (5); By analogy, repeat Step 1 to Step 2, and guide and replace other old head ropes (5) in turn.

2. The method for replacing the lead rope of a mine hoisting system according to claim 1, characterized in that: In Step 1, when the lower clamping part of the leading rope corresponding to the lifting container Ⅱ (7) side is controlled to close and firmly clamp the old leading rope (5) on the corresponding lifting container Ⅱ (7) side, it selectively clamps only the old leading rope (5) that is pre-replaced and does not clamp the old leading rope (5) that is not replaced temporarily; when the upper clamping mechanism of the leading rope is controlled to firmly clamp the old leading rope (5) on the corresponding lifting container Ⅱ (7) side, it selectively clamps only the old leading rope (5) that is pre-replaced and does not clamp the old leading rope (5) that is not replaced temporarily.

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