A double-drum hoist capable of independently regulating the drums and a differential control method thereof

Abstract

A dual-drum hoist capable of independently adjusting the drums and its differential control method are disclosed, relating to the field of mine hoist technology. Its structure includes drums I and II and drive mechanisms I and II. Drums I and II are coaxially arranged and a clutch is provided between them. Drive mechanisms I and II are respectively connected to drums I and II. Engaging or disengaging the clutch allows drive mechanisms I and II to jointly drive drums I and II to rotate synchronously or to drive drums I and II to rotate separately. The differential control method includes: 1. Drum I is lowered to the bottom of the shaft, and drum II is at the shaft opening; 2. After drum I is full, drum II is lowered by L; 3. The drums rotate, drum II is lowered to the bottom of the shaft, and drum I is raised to the shaft opening to unload slag; 4. After drum II is full, drum I is lowered by L; 5. The drums rotate, drum I is lowered to the bottom of the shaft, and drum II is raised to the shaft opening to unload slag; 6. Continuous operation in a cycle. This invention solves the technical problem that existing dual-drum sinking hoists cannot adjust the position of the two drums according to changes in shaft depth during vertical shaft sinking.

Description

Technical Field

[0001] This invention relates to the field of mine hoist technology, specifically a double-drum hoist capable of independently controlling the drum and its differential control method. Background Technology

[0002] Well drilling hoists are specialized hoisting equipment used during well drilling, primarily for lifting personnel, materials, and equipment during well drilling in coal mines, metal mines, and non-metal mines.

[0003] Existing conventional shaft sinking hoists come in two structures: single-drum and double-drum. A single-drum hoist can only lift one bucket (the container used for muck removal), resulting in low muck removal efficiency and impacting construction progress. A double-drum hoist can lift two buckets simultaneously, one above the other in relative positions. However, in vertical shaft construction, the shaft depth constantly changes, and conventional double-drum hoists cannot achieve high-frequency, efficient adjustments to the relative positions of the two buckets. Therefore, conventional double-drum hoists can only function as single-drum hoists in vertical shaft construction, and can only utilize the double-bucket lifting function in horizontal tunnel construction.

[0004] Currently, if two buckets are to be used for hoisting during on-site shaft construction, the only option is to install two sets of single-tube shaft sinking hoists simultaneously. However, the use of two sets of single-tube shaft sinking hoists significantly increases equipment costs, energy consumption, and floor space requirements, resulting in significant limitations and low cost-effectiveness.

[0005] Shaft sinking hoists are key equipment in mine shaft construction systems and are vital to the construction process. With the depletion of shallow mineral resources and the discovery of new ultra-deep mineral deposits, the demand for ultra-deep mine construction is increasing worldwide. However, current conventional shaft sinking hoists have low lifting efficiency and do not meet the future needs of the industry.

[0006] In summary, existing conventional shaft hoisting machines severely restrict the construction efficiency of vertical shafts (especially deep vertical shafts). Summary of the Invention

[0007] The purpose of this invention is to provide a dual-drum hoist capable of independently adjusting the drum and its differential control method, which can solve the technical problem that existing dual-drum drilling hoists cannot adjust the position of the two drums in real time according to the changes in well depth during vertical shaft drilling with high frequency and efficiency.

[0008] To achieve the above objectives, the present invention adopts the following technical solution.

[0009] A dual-drum hoist capable of independently adjusting the drum includes a drum I, a drum II, a drive mechanism I, and a drive mechanism II. Drum I and drum II are coaxially arranged, and a clutch is provided between drum I and drum II. Drive mechanism I is drivenly connected to drum I, and drive mechanism II is drivenly connected to drum II.

[0010] The clutch engagement enables drum I and drum II to be fixedly connected, and drive mechanism I and drive mechanism II together drive drum I and drum II to rotate synchronously.

[0011] When the clutch is disengaged, drum I and drum II can rotate independently, and drive mechanism I and drive mechanism II drive drum I and drum II to rotate respectively.

[0012] Furthermore, the clutch is a normally closed hydraulically driven clutch.

[0013] Furthermore, the clutch is a multi-plate friction clutch.

[0014] Furthermore, both drum I and drum II are equipped with brakes.

[0015] Furthermore, both drive mechanism I and drive mechanism II include an electric motor and a reducer.

[0016] Furthermore, the motor is connected to the reducer via a flexible pin coupling, and the reducer is connected to the corresponding drum via a gear coupling.

[0017] A differential control method for a dual-drum hoist, based on the aforementioned dual-drum hoist, includes the following steps: S1. Set up the equipment, disengage the clutch, lower the bucket I corresponding to drum I to the bottom working layer height for loading, and keep the bucket II corresponding to drum II at the wellhead height to engage the clutch. S2. Disengage the clutch and lower the bucket II to a height L, where L is the depth of the working layer at the bottom of the well. Engage the clutch. S3. After bucket I is full, drive drum I and drum II to rotate synchronously. Bucket II is lowered to the new working layer height, and bucket I is raised to the wellhead height for unloading. S4. Disengage the clutch, lower bucket I to a height L, and then engage the clutch; S5. After bucket II is full, drive drum I and drum II to rotate synchronously. Bucket I is lowered to the new working layer height, and bucket II is raised to the wellhead height to unload the slag. S6. Repeat S2 to S5 to achieve continuous operation.

[0018] Furthermore, in steps S1 to S5, when the drum is stationary, the drum is braked, and when the drive mechanism drives the drum to rotate, the brake on the corresponding drum is released.

[0019] Furthermore, in steps S3 and S5, after the bucket is raised to the wellhead height, the clutch is disengaged, and the bucket at the wellhead position is raised to a predetermined height h to facilitate the slag unloading operation. After the slag unloading is completed, the corresponding bucket is lowered to the wellhead height h, and the clutch is engaged.

[0020] Furthermore, to simplify the operation, after the bucket at the wellhead is raised to a predetermined height h and the slag is unloaded, the bucket is lowered to a height h+L, and the clutch is engaged.

[0021] By adopting the above technical solution, the present invention has the following beneficial effects: 1. This invention connects two drums via a clutch. By controlling the engagement or disengagement of the clutch, the synchronous rotation or independent control of the two drums can be achieved. When the two buckets are being lifted normally, the clutch is engaged, and the two drums rotate synchronously, which can reduce the total installed power of the motor. When the two buckets need to be loaded / unloaded or when the well depth changes, the drums can be independently controlled by disengaging the clutch, which can ensure that the two buckets can always accurately reach the bottom working layer / wellhead unloading platform during the alternating up and down of the two drums. 2. This invention uses a normally closed hydraulic clutch to connect the two drums. When there is no pressure, the two drums remain engaged to ensure synchronization. When differential control is required, pressure is applied to disengage the clutch. The drums are independently controlled to bring the bucket into position. After the pressure is released, the clutch is re-engaged. The operation is convenient, efficient, safe and reliable, and greatly improves work efficiency. 3. The present invention has corresponding drive mechanisms at both drums, so that the two drums can be independently controlled to meet the operational requirements of alternating loading and unloading and alternating differential adjustment of the two buckets; and when the well depth is shallow in the early stage of well construction, the clutch can be completely disengaged and the two drums can be used as two completely independent hoists for hoisting, which greatly improves the flexibility of construction scheduling and allocation.

[0022] 4. This invention uses a multi-plate friction clutch, which can achieve stepless adjustment, improving the flexibility of adjustment and also improving work efficiency. 5. In this invention, the clutch between the two drums can be completely disengaged during equipment relocation, reducing the weight and volume of individual components during relocation and improving construction efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the double-drum elevator in this invention.

[0024] Figure 2 This is a schematic diagram illustrating the steps of the differential control method in this invention.

[0025] Figure descriptions: 1. Drum I, 11. Bucket I, 2. Drum II, 21. Bucket II, 3. Clutch, 4. Motor, 41. Flexible pin coupling, 5. Reducer, 51. Gear coupling. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the features and performance of a double-drum hoist capable of independently controlling the drum and its differential control method are further described in detail below with reference to the accompanying drawings and embodiments.

[0027] Example 1 Please see the appendix Figure 1 A dual-drum hoist capable of independently controlling the drums, comprising drum I1, drum II2, drive mechanism I, and drive mechanism II.

[0028] Drum I1 and drum II2 are coaxially arranged, and both drum I1 and drum II2 are equipped with brakes.

[0029] A clutch 3 is provided between drum I1 and drum II2. Clutch 3 is a normally closed hydraulically driven clutch, specifically a multi-plate friction clutch.

[0030] Drive mechanism I is connected to drum I1, and drive mechanism II is connected to drum II2. Both drive mechanism I and drive mechanism II include a motor 4 and a reducer 5. The motor 4 is connected to the reducer 5 through a flexible pin coupling 41, and the reducer 5 is connected to the corresponding drum through a gear coupling 51.

[0031] When clutch 3 is engaged, drum I1 and drum II2 are fixedly connected, and drive mechanism I and drive mechanism II together drive drum I1 and drum II2 to rotate synchronously.

[0032] When clutch 3 is disengaged, drum I1 and drum II2 can rotate independently, and drive mechanism I and drive mechanism II drive drum I1 and drum II2 to rotate respectively.

[0033] See appendix Figure 2 A differential control method for a double-drum hoist, based on the aforementioned double-drum hoist, includes the following steps.

[0034] S1. Set up the equipment, disengage clutch 3, lower the bucket I11 corresponding to drum I1 to the bottom working layer height for loading, keep the bucket II21 corresponding to drum II2 at the wellhead height, and engage clutch 3.

[0035] S2. Disengage clutch 3 and lower bucket II21 to a height L, where L is the depth of the working layer at the bottom of the well. Engage clutch 3.

[0036] S3. After bucket I11 is full, drive drum I1 and drum II2 to rotate synchronously. Bucket II21 is lowered to the new working layer height, and bucket I11 is raised to the wellhead height for unloading.

[0037] S4. Disengage clutch 3, lower bucket I11 to a height L, and engage clutch 3.

[0038] S5. After bucket II21 is full, drive drum I1 and drum II2 to rotate synchronously. Bucket I11 is lowered to the new working layer height, and bucket II21 is raised to the wellhead height for unloading.

[0039] S6. Repeat S2 to S5 to achieve continuous operation.

[0040] Specifically, after the drum rotates to its designated position, it is braked by a corresponding brake to ensure operational safety. When the drive mechanism drives the corresponding drum to rotate, the corresponding brake is released.

[0041] In specific implementation, when the wellbore construction depth is H, the clutch is engaged, and the clutch 3 is disengaged via the electro-hydraulic system. The bucket I 11 is lowered to the height of the well bottom working platform via drive mechanism I, and the bucket II 21 is held at the wellhead unloading platform via drive mechanism II. The clutch 3 is depressurized and engaged, and the brakes of the two drums are controlled to apply braking to the corresponding drums. For example... Figure 2 As shown in section S1.

[0042] During the loading process of bucket I11, the control clutch 3 is disengaged, the brake of drum II2 is released, and the bucket II21 is lowered a distance L by the drive mechanism II. L is the distance of downward excavation to the bottom of the shaft during one loading operation. Then, drum II2 is braked again, and the control clutch 3 is depressurized and engaged. Figure 2 As shown in section S2.

[0043] After bucket I11 is full, the brakes on drums I1 and II2 are released. Drive mechanisms I and II work together to drive drums I1 and II2 to rotate synchronously, raising bucket I11 and lowering bucket II21. Since bucket II21 has already descended a distance L through differential control, its descent distance H during synchronous movement with bucket I11 will reach the new working depth (depth H+L). Bucket I11's original position is at depth H. Due to the synchronous rotation of drums I1 and II2, bucket II21 descends a distance H, and bucket I1 rises a synchronous distance H, reaching the slag unloading platform at the wellhead. Once both buckets I11 and II21 reach their predetermined positions, the brakes on the two drums are engaged, allowing bucket II21 to continue loading slag while bucket I11 begins unloading. Figure 2 As shown in section S3.

[0044] During the loading process of bucket II21, the control clutch 3 is disengaged, the brake of drum I1 is released, and the bucket I11 is lowered a distance L by the drive mechanism I. Then, drum I1 is braked again, and the control clutch 3 is depressurized and engaged. Figure 2 As shown in section S4.

[0045] After bucket II21 is full, the brakes on drums I1 and II2 are released. Drive mechanisms I and II work together to drive drums I1 and II2 to rotate synchronously, lowering bucket I11 and raising bucket II21. Since bucket I11 has already descended a distance L through differential control, a further descent of H+L during the synchronous movement of buckets I11 and II21 will reach the new working depth (depth H+L+L). Bucket II21 was originally at depth H+L. Due to the synchronous rotation of drums II2 and I1, bucket I11 descends a distance of H+L, and bucket II2 rises a synchronous distance of H+L, reaching the slag unloading platform at the wellhead. Once both buckets I11 and II21 have reached their designated positions, the brakes on the two drums are engaged, allowing bucket I11 to continue loading slag while bucket II21 begins unloading. Figure 2 As shown in section S5.

[0046] By repeating the above steps, continuous operation can be achieved, with the two buckets alternately loading and unloading slag to ensure continuous tunneling operations.

[0047] Example 2 Unlike Embodiment 1, in order to facilitate the slag unloading operation, in this embodiment, after the bucket I11 is raised to the wellhead height in S3, the clutch 3 is disengaged, and the bucket I11 is raised to a predetermined height h for slag unloading. After slag unloading is completed, the bucket I11 is lowered to the wellhead height by height h, and the clutch 3 is engaged.

[0048] In S5, after bucket II 21 is raised to the wellhead height, clutch 3 is disengaged, and bucket II 21 is raised to a predetermined height h for unloading slag. After unloading, bucket II 21 is lowered to the wellhead height h, and clutch 3 is engaged.

[0049] In particular, to adapt to actual operation, the operation of lowering the bucket to the wellhead height h after unloading slag can be carried out continuously with the operation of differentially lowering the bucket to the next lowering height L, reducing the number of operations of the clutch 3 and the drive mechanism.

[0050] Example 3 Unlike Embodiment 1, the driving mechanism in this embodiment is a low-speed motor, which is directly connected to the corresponding drum to achieve driving, eliminating the need for a reducer and further simplifying the structure.

[0051] It should be noted that the parts not described in detail in this solution are all prior art. The above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A double-drum hoist capable of independently adjusting the drum, characterized in that: It includes a drum I (1), a drum II (2), a drive mechanism I, and a drive mechanism II. Drum I (1) and drum II (2) are coaxially arranged, and a clutch (3) is provided between drum I (1) and drum II (2). Drive mechanism I is connected to drum I (1) in a transmission manner, and drive mechanism II is connected to drum II (2) in a transmission manner. The clutch (3) engages to fix the drum I (1) and drum II (2) together, and the drive mechanism I and drive mechanism II drive the drum I (1) and drum II (2) to rotate synchronously. When the clutch (3) is disengaged, the drum I (1) and the drum II (2) can rotate independently. The drive mechanism I and the drive mechanism II drive the drum I (1) and the drum II (2) to rotate respectively.

2. The double-drum hoist capable of independently adjusting the drum as described in claim 1, characterized in that: Clutch (3) is a normally closed hydraulically driven clutch.

3. The double-drum hoist capable of independently adjusting the drum as described in claim 1, characterized in that: The clutch (3) is a multi-plate friction clutch.

4. A double-drum hoist capable of independently adjusting the drum as described in claim 1, characterized in that: Both drum I (1) and drum II (2) are equipped with brakes.

5. A double-drum hoist capable of independently adjusting the drum as described in claim 1, characterized in that: Both drive mechanism I and drive mechanism II include an electric motor (4) and a reducer (5).

6. A double-drum hoist capable of independently adjusting the drum as described in claim 5, characterized in that: The motor (4) is connected to the reducer (5) via a flexible pin coupling (41), and the reducer (5) is connected to the corresponding drum via a gear coupling (51).

7. A differential control method for a double-drum hoist, based on the double-drum hoist of claim 1, characterized in that: Includes the following steps, S1. Set up the equipment, disconnect the clutch (3), lower the bucket I (11) corresponding to the drum I (1) to the bottom working layer height for loading, keep the bucket II (21) corresponding to the drum II (2) at the wellhead height, and engage the clutch (3). S2. Disengage the clutch (3), lower the bucket II (21) by a height L, where L is the depth of the working layer at the bottom of the well, and engage the clutch (3). S3. After bucket I (11) is full, drive drum I (1) and drum II (2) to rotate synchronously. Bucket II (21) is lowered to the new working layer height, and bucket I (11) is raised to the wellhead height for unloading. S4. Disengage the clutch (3), lower the bucket I (11) by a height L, and engage the clutch (3). S5. After bucket II (21) is full, drive drum I (1) and drum II (2) to rotate synchronously. Bucket I (11) is lowered to the new working layer height, and bucket II (21) is raised to the wellhead height for unloading. S6. Repeat S2 to S5 to achieve continuous operation.

8. The differential control method for a double-drum hoist as described in claim 7, characterized in that: In steps S1 to S5, when the drum is stationary, the drum is braked; when the drive mechanism drives the drum to rotate, the brake on the corresponding drum is released.

9. The differential control method for a double-drum hoist as described in claim 7, characterized in that: In steps S3 and S5, after the bucket is raised to the wellhead height, the clutch (3) is disengaged, and the bucket at the wellhead position is raised to a predetermined height h to facilitate the unloading operation. After the unloading is completed, the corresponding bucket is lowered to the wellhead height h, and the clutch (3) is engaged.

10. The differential control method for a double-drum hoist as described in claim 9, characterized in that: To simplify the operation, after the bucket at the wellhead is raised to a predetermined height h and the slag is unloaded, the bucket is lowered to a height h+L, and the clutch is engaged (3).

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