Vertical shaft friction type lifting system and transformation method of existing vertical shaft lifting system

Abstract

The invention discloses a vertical shaft friction type lifting system and a transformation method of an existing vertical shaft lifting system.The vertical shaft friction type lifting system comprises a lifting mechanism, a shaft, a lifting container and a balance weight, the middle section of the lifting container and the middle section of the shaft are arranged in parallel, and the middle section of the balance weight and the middle section of the lifting container are arranged in parallel; the vertical shaft friction type lifting system further comprises a middle partition plate arranged between the lifting container and the balance weight, the middle partition plate and the middle section of the lifting container are arranged in parallel, and the middle partition plate extends in the vertical direction and is arranged at the meeting section of the lifting container and the balance weight. According to the vertical shaft friction type lifting system and the transformation method of the existing vertical shaft lifting system, the problems that in an existing vertical shaft friction type lifting system, the lifting container and the balance weight are prone to generating impact in the horizontal direction at the meeting section due to the respective airflow effect, and the balance weight or the lifting container is prone to generating transverse swing; and unstable system operation is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of mine hoisting equipment, and in particular to a shaft friction hoisting system and a modification method of an existing shaft hoisting system. Background Art

[0002] Vertical shaft hoisting is widely used in underground mines in industries such as steel, nonferrous metals, gold, chemicals, and coal. In the prior art, a hoisting container is movably disposed in the shaft through a tank channel along the vertical direction, a counterweight is movably disposed in the shaft through a counterweight tank channel along the vertical direction, and the hoisting container and the counterweight are distributed on both sides of the hoisting device through steel wire ropes. During the operation of the vertical shaft friction hoisting system, the hoisting container and the counterweight alternately rise or fall and meet at a certain position (meeting section) fixed in the vertical direction. If the effective distance of the surrounding air disturbance caused by the lifting container when moving at the target speed is Δx1, and the effective distance of the surrounding air disturbance caused by the counterweight when moving at the target speed is Δx2, if the surface gap between the lifting container and the counterweight when they meet is less than Δx1+Δx2, the lifting container and the counterweight will be affected by each other's disturbance to the air in the meeting section and then cause disturbance to themselves, causing their vertical movement to deviate to a certain extent, thereby causing the lifting container and the counterweight to produce horizontal impact on their corresponding tankway. If it is a rigid tankway, long-term operation will increase the wear of the tankway and facilities such as the tank ears, affecting the overall service life of the lifting system. If it is a wire rope tankway, it will cause lateral swing of the wire rope tankway, affecting the normal operation of the lifting container and increasing wear.

[0003] In view of this, it is necessary to propose a shaft friction lifting system and a modification method of an existing shaft lifting system to solve or at least alleviate some of the above-mentioned defects. Summary of the invention

[0004] The shaft friction lifting system and the modification method of the existing shaft lifting system provided by the present invention solve the technical problems that in the existing shaft friction lifting system, the lifting container and the counterweight are prone to horizontal impact at the meeting section due to the action of their respective airflows, and the counterweight or the lifting container is prone to lateral swing, resulting in unstable system operation and easy damage to the tank channel.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] A shaft friction lifting system comprises a lifting mechanism, a shaft, and a lifting container and a counterweight which are movably arranged vertically in the shaft. The lifting container and the counterweight are respectively square structures. The middle section of the lifting container is arranged parallel to the middle section of the shaft. The middle section of the counterweight is arranged parallel to the middle section of the lifting container. The lifting container is movably arranged vertically through a first tank channel. The counterweight is movably arranged vertically through a second tank channel. The lifting mechanism comprises a friction wheel and a steel wire rope. The friction wheel is located above the shaft. The first end of the steel wire rope is connected to the counterweight. The second end of the steel wire rope is connected to the lifting container after passing around the friction wheel. The shaft friction lifting system also comprises a middle partition between the lifting container and the counterweight. The middle partition is arranged parallel to the middle section of the lifting container. The middle partition is arranged vertically at the meeting section of the lifting container and the counterweight along the vertical extension.

[0007] Furthermore, the height of the middle partition is not less than the length of the meeting section of the lifting container and the counterweight.

[0008] Furthermore, using the formula Calculate the vertical distance S1 between the top of the counterweight and the center of the friction wheel when the counterweight meets the lifting container, and the vertical distance S2 between the bottom of the lifting container and the center of the friction wheel; use the formula Calculate and obtain the vertical distance S3 between the top of the lifting container and the center of the friction wheel and the vertical distance S4 between the bottom of the balance hammer and the center of the friction wheel when the balance hammer is separated from the lifting container; where H1 is the vertical distance from the meeting point to the center of the friction wheel, L1 is the height value of the balance hammer, and L2 is the height value of the lifting container.

[0009] Furthermore, if L1 ≥ L2, using formula S PT =(3L1+L2) / 2Calculate the height S where the counterweight and the lifting container meet TP ; If L1<L2, use formula S TP =(L1+3L2) / 2Calculate the height S where the counterweight and the lifting container meet TP .

[0010] Furthermore, the middle partition is fixedly connected to the wellbore at both lateral ends.

[0011] Furthermore, the shaft friction lifting system also includes a first side partition and a second side partition extended vertically, the first side partition, the second side partition and the middle partition are arranged parallel to each other, the first side partition is provided on the side of the lifting container away from the middle partition, the distance between the first side partition and the lifting container is the same as the distance between the middle partition and the lifting container, the second side partition is located on the side of the counterweight away from the middle partition, the distance between the second side partition and the counterweight is the same as the distance between the middle partition and the counterweight, the first side partition, the second side partition and the middle partition are arranged flush in the height direction.

[0012] Furthermore, the lifting mechanism also includes a guide wheel arranged on one side of the friction wheel.

[0013] Furthermore, the first tank channels located on both sides of the lifting container are symmetrically arranged along the middle section of the lifting container.

[0014] Furthermore, the second tank channels located on both sides of the counterweight are symmetrically arranged along the middle section of the counterweight.

[0015] The present invention also provides a method for transforming an existing shaft hoisting system, which is used to transform the shaft friction hoisting system described above, and comprises the following steps:

[0016] Determine the meeting position and meeting height of the meeting sections of the lifting container and the counterweight;

[0017] Determine the lateral meeting gap between the lifting container and the counterweight at the meeting section;

[0018] Arrange an intermediate partition not less than the meeting height in the meeting gap, and the intermediate partition is located in the horizontal meeting gap;

[0019] A first side partition is arranged on a side of the lifting container away from the middle partition, and the first side partition and the middle partition are symmetrically arranged relative to the middle section of the lifting container; a second side partition is arranged on a side of the counterweight away from the middle partition, and the second side partition and the middle partition are symmetrically arranged relative to the middle section of the counterweight; wherein the first side partition, the second side partition and the middle partition are arranged parallel to each other, and the first side partition, the second side partition and the middle partition are arranged flush in the height direction.

[0020] The present invention has the following beneficial effects:

[0021] The shaft friction lifting system of the present invention and the reconstruction method of the existing shaft lifting system include a lifting mechanism, a shaft, and a lifting container and a counterweight which are vertically movably arranged in the shaft. The lifting container is vertically movably arranged through a first tank channel, and the counterweight is vertically movably arranged through a second tank channel. The vertical middle section of the lifting container is arranged parallel to the middle section of the vertical shaft. The lifting mechanism includes a friction wheel and a steel wire rope. The friction wheel is located above the shaft. The first end of the steel wire rope is connected to the counterweight, and the second end of the steel wire rope is connected to the lifting container after passing around the friction wheel. Under the action of the lifting mechanism, the lifting container and the counterweight are relatively moved in the height direction. The lifting container and the counterweight are arranged at the meeting section of the lifting container and the counterweight through a middle partition which is vertically extended. During the process of the counterweight and the lifting container alternately rising or falling, when When the balancing hammer or lifting container is far away from the meeting point, that is, far away from the partition group, the distance between the surface of the balancing hammer or lifting container and the surrounding facilities is large, generally much larger than the effective distance of the surrounding air disturbance, so its operation will not be affected by the air disturbance; when the balancing hammer or lifting container is close to the meeting point and enters the partition group, the partition ensures that the distances from the two lateral sides of the balancing hammer or lifting container to their respective partitions are consistent, so that the balancing hammer or lifting container operates under a condition where the lateral disturbances to the surrounding air on both sides are consistent, and the air disturbance will not affect the vertical movement of the balancing hammer or lifting container; in the shaft friction lifting system provided by the present invention, the balancing hammer or lifting container is not prone to lateral swing, the system lifting system runs smoothly vertically, and the first tank channel and the second tank channel are less subject to lateral disturbance force and are not easily damaged.

[0022] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 is a horizontal cross-sectional schematic diagram of a shaft friction lifting system in one embodiment of the present invention;

[0025] Figure 2 is a vertical cross-sectional schematic diagram of a shaft friction lifting system in one embodiment of the present invention;

[0026] Figure 31 is a schematic diagram of the meeting state of the lifting container and the counterweight in the shaft friction lifting system in one embodiment of the present invention; wherein a is a schematic diagram of the state when the counterweight rises and the lifting container falls and meets, b is a schematic diagram of the state when the counterweight rises and the lifting container falls and separates, c is a schematic diagram of the state when the counterweight falls and the lifting container rises and meets, and d is a schematic diagram of the state when the counterweight falls and the lifting container rises and separates;

[0027] Figure 4 It is a principle display diagram of the meeting position and meeting height of the lifting container and the counterweight in the shaft friction lifting system in one embodiment of the present invention; wherein a is the principle display diagram when they meet, and b is the principle display diagram when they separate.

[0028] Legend:

[0029] 100. Vertical shaft friction lifting system; 10. Lifting mechanism; 11. Friction wheel; 12. Wire rope; 13. Guide wheel; 20. Shaft; 30. Lifting container; 31. First tankway; 40. Counterweight; 41. Second tankway; 50. Middle partition; 60. First side partition; 70. Second side partition. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Through research, it is found that when a moving object moves in the air, due to the viscosity of the air, the air close to the surface of the moving object will adhere to the surface of the moving object and move with the moving object, and the air layer close to the surface of the moving object is affected by the viscous friction of the inner air layer, and also flows with the moving object at a certain speed. The flow rate of air at different positions decreases as the distance between the air layer and the surface of the moving object increases. If it is assumed that the effective distance of any moving object to disturb the surrounding air is Δx, Δx is related to the moving speed, surface shape, surface friction coefficient, etc. of the moving object. The existing shaft friction lifting system, because the lifting container and the counterweight will be affected by each other's disturbance to the air at the meeting section and then produce disturbance to themselves, the lifting container and the counterweight are prone to horizontal impact due to the action of their respective airflows at the meeting section, and the counterweight or lifting container is prone to lateral swing, unstable system operation, and easy damage to the tank channel.

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The present invention provides a shaft friction lifting system 100, comprising a lifting mechanism 10, a shaft 20, and a lifting container 30 and a counterweight 40 which are movably arranged in the shaft 20 in the vertical direction. The lifting container 30 and the counterweight 40 are respectively square structures. The middle section of the lifting container 30 is arranged parallel to the middle section of the shaft 20, and the middle section of the counterweight 40 is arranged parallel to the middle section of the lifting container 30. The lifting container 30 is movably arranged in the vertical direction through a first tank passage 31, and the counterweight 40 is movably arranged in the vertical direction through a second tank passage 41. The lifting mechanism 10 includes a friction wheel 11 and a steel wire rope 12, the friction wheel 11 is located above the shaft 20, the first end of the steel wire rope 12 is connected to the counterweight 40, and the second end of the steel wire rope 12 is connected to the lifting container 30 after passing around the friction wheel 11. The shaft friction lifting system 100 also includes a middle partition 50 arranged between the lifting container 30 and the counterweight 40, the middle partition 50 is arranged parallel to the middle section of the lifting container 30, and the middle partition 50 is extended vertically at the meeting section of the lifting container 30 and the counterweight 40.

[0036] The shaft friction lifting system 100 of the present invention and the modification method of the existing shaft lifting system include a lifting mechanism 10, a shaft 20, and a lifting container 30 and a counterweight 40 which are vertically movably arranged in the shaft 20. The lifting container 30 is vertically movably arranged through a first tank channel 31, and the counterweight 40 is vertically movably arranged through a second tank channel 41. The vertical middle section of the lifting container 30 is arranged parallel to the middle section of the vertical shaft 20. The lifting mechanism 10 includes a friction wheel 11 and a steel wire rope 12. The friction wheel 11 is located above the shaft 20. The first end of the steel wire rope 12 is connected to the counterweight 40. The second end of the steel wire rope 12 is connected to the lifting container 30 after bypassing the friction wheel 11. Under the action of the lifting mechanism 10, the lifting container 30 and the counterweight 40 are relatively moved in the height direction. The middle partition plate 50 is vertically extended and arranged at the position of the meeting section of the lifting container 30 and the counterweight 40. The counterweight 40 and the lifting container 30 are arranged parallel to each other. During the process of alternating ascent or descent, when the counterweight 40 or the lifting container 30 is far away from the meeting point, that is, far away from the partition group, the distance between the surface of the counterweight 40 or the lifting container 30 and the surrounding facilities is large, generally much larger than the effective distance of the surrounding air disturbance, so its operation will not be affected by the air disturbance; when the counterweight 40 or the lifting container 30 approaches the meeting point and enters the partition group, the partition ensures that the distances from the two lateral sides of the counterweight 40 or the lifting container 30 to their respective partitions are consistent, so that the counterweight 40 or the lifting container 30 operates under a condition where the lateral disturbances to the surrounding air on both sides are consistent, and the air disturbance will not affect the vertical movement of the counterweight 40 or the lifting container 30; in the shaft friction lifting system 100 provided by the present invention, the counterweight 40 or the lifting container 30 is not prone to lateral swing, the system lifting system operates smoothly vertically, and the first tank channel 31 and the second tank channel are less susceptible to lateral disturbance force and are not easily damaged.

[0037] It can be understood that in one embodiment of the present invention, the vertical middle section of the lifting container is arranged in parallel with the vertical middle section of the shaft; the first tank channel and the second tank channel are fixedly arranged in the shaft.

[0038] Furthermore, the height of the middle partition 50 is not less than the length of the meeting section of the lifting container 30 and the counterweight 40. It can be understood that the height of the middle partition 50 is not less than the length of the meeting section of the lifting container 30 and the counterweight 40, which is conducive to ensuring that the balance of the lifting container 30 and the counterweight 40 is not affected by the air disturbance of each other in the process of meeting each other.

[0039] Furthermore, using the formula Calculate and obtain the vertical distance S1 between the top of the balancing hammer 40 and the center of the friction wheel 11 and the vertical distance S2 between the bottom of the lifting container 30 and the center of the friction wheel 11 when the balancing hammer 40 meets the lifting container 30;

[0040] Using formula Calculate and obtain the vertical distance S3 between the top of the lifting container 30 and the center of the friction wheel 11 and the vertical distance S4 between the bottom of the balance hammer 40 and the center of the friction wheel 11 when the balance hammer 40 is separated from the lifting container 30;

[0041] Wherein, H1 is the vertical distance from the meeting point to the center of the friction wheel 11 , L1 is the height value of the balance weight 40 , and L2 is the height value of the lifting container 30 .

[0042] Furthermore, if L1 ≥ L2, using formula S PT =(3L1+L2) / 2Calculate the height S where the counterweight 40 and the lifting container 30 meet TP ; If L1<L2, use formula S TP =(L1+3L2) / 2Calculate the height S where the counterweight 40 meets the lifting container 30 TP .

[0043] It can be understood that the length and position of the meeting section of the lifting container 30 and the counterweight 40 are objectively fixed. Figure 4 a The meeting state of the descending balance hammer 40 and the ascending lifting container 30 in the simplified model, Figure 4 b Simplify the model and calculate the separation state of the balance hammer 40 descending and the lifting container 30 ascending: Assume that the length of the wire rope 12 is L, the radius of the friction wheel 11 is R, the vertical distance from the meeting point to the center of the friction wheel 11 is H1, the vertical distance from the separation point to the center of the friction wheel 11 is H2, the length of the balance hammer 40 is L1, the length of the lifting container 30 is L2, and the slight influence of the guide wheel on the wire rope deflection is ignored, then:

[0044] (H1-L1)+H1+πR=L

[0045] (H2-L2)+H2+πR=L

[0046] From the above two formulas, we can know that:

[0047] H1=(L-πR+L1) / 2

[0048] H2=(L-πR+L2) / 2

[0049] It can be seen from the above formula that the meeting point and separation point of the counterweight 40 and the lifting container 30 are fixed values, which are only related to the length of the wire rope, the radius of the friction wheel 11, the length of the counterweight 40 and the lifting container 30 and other equipment dimensions.

[0050] It can be further known that: H1-H2=(L1-L2) / 2

[0051] Further, we know that: H2 = H1-(L1-L2) / 2

[0052] exist Figure 4 In a, when the counterweight 40 meets the lifting container 30, the vertical distance S1 between the top of the counterweight 40 and the center of the friction wheel 11 is: S1 = H1-L1;

[0053] The vertical distance S2 between the bottom of the lifting container 30 and the center of the friction wheel 11 is: S2 = H1 + L2;

[0054] exist Figure 4 In b, when the counterweight 40 is separated from the lifting container 30, the vertical distance S3 between the top of the lifting container 30 and the center of the friction wheel 11 is: S3 = H2-L2 = H1-(L1-L2) / 2-L2 = H1-(L1+L2) / 2;

[0055] The vertical distance S4 between the bottom of the counterweight 40 and the center of the friction wheel 11 is:

[0056] S4=H1+L1=H1-(L1-L2) / 2+L1=H1+(L1+L2) / 2;

[0057] If L1>L2: then: S3>S1 and S4>S2;

[0058] The length of the section where the counterweight 40 and the lifting container 30 meet is S PT for:

[0059] S PT =S4-S1=H1+(L1+L2) / 2-(H1-L1)=(3L1+L2) / 2

[0060] If L1<L2: then: S3<S1 and S4<S2;

[0061] The length of the section where the counterweight 40 and the lifting container 30 meet is S TP for:

[0062] S TP =S2-S3=(H1+L2)-[H1-(L1+L2) / 2]=(L1+3L2) / 2

[0063] If L1 = L2:

[0064] Then H1=H2, the meeting point and the separation point coincide; the length of the meeting section (meeting height) is 2L1 or 2L2.

[0065] Furthermore, the middle partition 50 is fixedly connected to the wellbore 20 at both lateral ends.

[0066] Furthermore, the shaft friction lifting system 100 also includes a first side partition 60 and a second side partition 70 arranged to extend vertically, the first side partition 60, the second side partition 70 and the middle partition 50 are arranged parallel to each other, the first side partition 60 is arranged on the side of the lifting container 30 away from the middle partition 50, the distance between the first side partition 60 and the lifting container 30 is the same as the distance between the middle partition 50 and the lifting container 30 (the first side partition 60 and the middle partition 50 are arranged symmetrically relative to the middle section of the lifting container 30), the second side partition 70 is located on the side of the counterweight 40 away from the middle partition 50, the distance between the second side partition 70 and the counterweight 40 is the same as the distance between the middle partition 50 and the counterweight 40 (the second side partition and the middle partition 50 are arranged symmetrically relative to the middle section of the counterweight 40), the first side partition 60, the second side partition 70 and the middle partition 50 are arranged flush in the height direction. In the present invention, by setting the middle partition 50, the first side partition 60 and the second side partition 70, an operating environment with the same surrounding air disturbance conditions is provided to the counterweight 40 and the lifting container 30, so as to reduce the lateral swing of the counterweight 40 or the lifting container 30 and increase the stability of the lifting system operation.

[0067] Better yet, please refer to Figure 1 The distances from the middle partition 50 and the first partition to the outer surface of the lifting container 30 are both X1; the distances from the middle partition 50 and the second partition to the outer surface of the counterweight 40 are both X2; the values ​​of X1 and X2 can be freely allocated appropriately, taking full account of the operational safety of the lifting container 30 and the counterweight 40, etc., and combining the structure of the wellbore 20 itself.

[0068] Furthermore, the lifting mechanism 10 also includes a guide wheel 13 arranged on one side of the friction wheel 11 .

[0069] Furthermore, the first tank channels on both sides of the lifting container are symmetrically arranged along the middle section of the lifting container. It can be understood that the number of the first tank channels 31 can be two, four or other numbers. They are symmetrically arranged along the middle section of the lifting container 30.

[0070] Furthermore, the second tank channels located on both sides of the counterweight are symmetrically arranged along the middle section of the counterweight.

[0071] The present invention also provides a method for modifying an existing shaft hoisting system, which is used to modify the shaft friction hoisting system 100 as described above, and comprises the following steps:

[0072] Determine the meeting position and meeting height of the meeting section of the lifting container 30 and the counterweight 40;

[0073] Determine the lateral meeting gap between the lifting container 30 and the counterweight 40 at the meeting section;

[0074] Arrange a middle partition plate 50 not less than the meeting height in the meeting gap, and the middle partition plate 50 is located in the lateral meeting gap;

[0075] A first side partition 60 is arranged on a side of the lifting container 30 away from the middle partition 50, and the first side partition 60 and the middle partition 50 are symmetrically arranged relative to the mid-section of the lifting container 30; a second side partition 70 is arranged on a side of the counterweight 40 away from the middle partition 50, and the second side partition 70 and the middle partition 50 are symmetrically arranged relative to the mid-section of the counterweight 40; wherein the first side partition 60, the second side partition 70 and the middle partition 50 are arranged parallel to each other, and the first side partition 60, the second side partition 70 and the middle partition 50 are arranged flush in the height direction.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A shaft friction lifting system, characterized in that: The invention comprises a lifting mechanism, a shaft, and a lifting container and a counterweight which are movably arranged in the shaft in the vertical direction. The lifting container and the counterweight are respectively square structures. The middle section of the lifting container is arranged in parallel with the middle section of the shaft. The middle section of the counterweight is arranged in parallel with the middle section of the lifting container. The lifting container is movably arranged in the vertical direction through a first tank channel. The counterweight is movably arranged in the vertical direction through a second tank channel. The lifting mechanism comprises a friction wheel and a steel wire rope. The friction wheel is located above the shaft. The first end of the steel wire rope is connected to the counterweight. The second end of the steel wire rope is connected to the lifting container after passing around the friction wheel. The shaft friction lifting system also includes a middle partition arranged between the lifting container and the counterweight, wherein the middle partition is arranged parallel to the middle section of the lifting container and extends vertically at the meeting section of the lifting container and the counterweight.

2. The shaft friction lifting system according to claim 1, characterized in that: The height of the middle partition is not less than the length of the meeting section of the lifting container and the counterweight.

3. The shaft friction lifting system according to claim 2, characterized in that: Using formula Calculate and obtain the vertical distance S1 between the top of the balancing hammer and the center of the friction wheel and the vertical distance S2 between the bottom of the lifting container and the center of the friction wheel when the balancing hammer meets the lifting container; Using formula Calculate and obtain the vertical distance S3 between the top of the lifting container and the center of the friction wheel and the vertical distance S4 between the bottom of the balance hammer and the center of the friction wheel when the balance hammer is separated from the lifting container; Among them, H1 is the vertical distance from the meeting point to the center of the friction wheel, L1 is the height of the balance hammer, and L2 is the height of the lifting container.

4. The shaft friction lifting system according to claim 2, characterized in that: If L1 ≥ L2, use formula S PT =(3L1+L2) / 2Calculate the height S where the counterweight and the lifting container meet TP ; If L1<L2, use formula S TP =(L1+3L2) / 2Calculate the height S where the counterweight and lifting container meet TP .

5. The shaft friction lifting system according to claim 2, characterized in that: The middle partition plate and the lateral ends thereof are fixedly connected to the wellbore.

6. The shaft friction lifting system according to any one of claims 1 to 5, characterized in that: The shaft friction lifting system also includes a first side baffle and a second side baffle arranged to extend vertically, the first side baffle, the second side baffle and the middle baffle are arranged parallel to each other, the first side baffle is provided on the side of the lifting container away from the middle baffle, the distance between the first side baffle and the lifting container is the same as the distance between the middle baffle and the lifting container, the second side baffle is located on the side of the counterweight away from the middle baffle, the distance between the second side baffle and the counterweight is the same as the distance between the middle baffle and the counterweight, the first side baffle, the second side baffle and the middle baffle are arranged flush in the height direction.

7. The shaft friction lifting system according to any one of claims 1 to 5, characterized in that: The lifting mechanism also includes a guide wheel arranged on one side of the friction wheel.

8. The shaft friction lifting system according to any one of claims 1 to 5, characterized in that: The first tank channels located on both sides of the lifting container are symmetrically arranged along the middle section of the lifting container.

9. The shaft friction lifting system according to any one of claims 1 to 5, characterized in that: The second tank channels located on both sides of the counterweight are symmetrically arranged along the middle section of the counterweight.

10. A method for modifying an existing shaft hoisting system, characterized in that: The invention is used to transform a shaft friction lifting system as claimed in any one of claims 1 to 9, comprising the steps of: Determine the meeting position and meeting height of the meeting sections of the lifting container and the counterweight; Determine the lateral meeting gap between the lifting container and the counterweight at the meeting section; Arrange an intermediate partition plate not less than the meeting height in the meeting gap, wherein the intermediate partition plate is located in the transverse meeting gap; A first side partition is arranged on a side of the lifting container away from the middle partition, and the first side partition and the middle partition are symmetrically arranged relative to the middle section of the lifting container; a second side partition is arranged on a side of the counterweight away from the middle partition, and the second side partition and the middle partition are symmetrically arranged relative to the middle section of the counterweight; wherein the first side partition, the second side partition and the middle partition are arranged parallel to each other, and the first side partition, the second side partition and the middle partition are arranged flush in the height direction.

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