A deep rope coring winch
By designing a large-depth rope-taking angel including a retracting and retracting reel, a wire cable and a passive rotating assembly, the problem of easy damage when the wire rope is wound and easy to mess up when the wire rope is freely lowered, and the uniform arrangement of the wire rope and the stability of the wire rope are achieved.
Patent Information
- Application Number
- CN202411917385.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-04-04
AI Technical Summary
The existing high-deep rope-taking angels are prone to squeeze and damage when the wire rope is wrapped, and are prone to scrambling when the wire rope falls freely, resulting in safety hazards such as wear of the wire rope and core falling off.
A large depth rope picking angel consisting of a base, a rack, a wire rope retracting assembly, a cable duct and a passive rotating assembly is designed. Through the cooperation of the rotatable reel and the cable ductor, the wire ropes are ensured to be evenly arranged, and the passive rotating assembly is used to adapt to the cable speed when it falls freely, preventing the rope from being messed up.
It effectively reduces the wear of the wire rope, avoids the safety hazards of core falling off, and improves the stability and efficiency of the wiring.
Smart Images

Figure CN119754720A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of rope coring, in particular to a rope coring winch for deep depth. Background Art
[0002] The rope coring winch is an important auxiliary equipment in core drilling. It is mainly used for salvaging and dropping the inner tube assembly of the coring drill tool in the drill string during geological drilling coring operations.
[0003] When performing core catching operations, one end of the wire rope is fixed to the drum of the coring winch, and the free end is fixedly connected to the lifting ring of the salvage device. The coring winch controls the wire rope to lower the salvage device to the bottom of the hole. The salvage device is connected to the salvaging spearhead of the inner tube assembly to form a whole. The wire rope is then lifted and wound around the winch drum until it is lifted to the hole mouth to salvage the core tube.
[0004] The existing wire rope of the rope coring winch will squeeze each other on the drum when it is wound, especially the wire rope wound on the drum of the deep rope coring operation has many layers, which has the defect that the rope is easily damaged. In addition, when the existing rope is freely descending, the weight of the salvage device and the rope itself is too large, resulting in the phenomenon of uneven arrangement of the wire rope. In addition, the excessive rotation speed of the drum will also cause the wire rope to become tangled. Summary of the invention
[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a deep-depth rope coring winch, which solves the defect that the steel wire rope of the deep-depth rope coring winch will be squeezed against each other on the drum when it is wound, resulting in the defect that the rope is easily damaged, and the existing rope has a technical problem that when it is freely descending, the weight of the salvage device and the rope itself is too large, resulting in the drum rotating speed being too high, causing the steel wire rope to be out of control and the rope to be tangled.
[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:
[0007] The embodiment of the present invention provides a deep-depth rope coring winch, comprising a base, a frame located on the base, a wire rope retracting assembly partially disposed in the frame, a wire arranging device disposed above the frame, and a passive rotating assembly disposed at one end of the wire rope retracting assembly;
[0008] The wire rope retracting assembly comprises a rotatable retracting drum, and the wire rope is discharged or reeled in by rotating the retracting drum;
[0009] One end of the steel wire rope is fixedly connected to the reel, and the other end of the steel wire rope passes through the wire arranging device and is connected to the salvage device. When the steel wire rope is discharged or reeled, the wire arranging body of the wire arranging device can make reciprocating linear motion along the axial direction of the reel;
[0010] One end of the passive rotating component is connected to the reel, and the other end of the passive rotating component can be selectively connected to the wire arranging device. The reel can drive the passive rotating component to drive the wire arranging device to move.
[0011] Optionally, the cable arranging device includes mounting brackets respectively mounted on both sides of the frame, a bidirectional screw rod mounted on the two mounting brackets, a cable arranging body slidably mounted on the bidirectional screw rod, a cable arranging drive motor arranged on one side of the mounting bracket, and an electromagnetic clutch connected to the output end of the cable arranging drive motor;
[0012] Both ends of the bidirectional screw rod are mounted on the mounting bracket through bearings;
[0013] The cable arrangement driving motor is selectively connected to one end of the bidirectional screw rod through the electromagnetic clutch, and the other end of the bidirectional screw rod is selectively connected to the passive rotating component through a cylinder clutch.
[0014] Optionally, the cable arranging device further comprises two guide rods arranged parallel to the bidirectional screw rod, and the cable arranging body is slidably mounted on the guide rods.
[0015] Optionally, the wire rope retracting assembly comprises a support connected to the frame and the retracting drum, and the retracting drum is mounted on the support via a bearing;
[0016] The wire rope retracting and releasing assembly also includes a reel driving motor arranged on one side of the retracting and releasing reel, and an airbag clutch connected to the reel driving motor and the retracting and releasing reel.
[0017] Optionally, the wire rope retracting and releasing assembly further includes a brake device disposed between the airbag clutch and the retracting and releasing drum.
[0018] Optionally, the brake device comprises a housing, a rotating disk located in the housing, and a speed regulating body;
[0019] The rotating disk is sleeved on the outer wall of the retractable drum, and the speed regulating body is fixedly installed in the inner cavity of the shell. One end of the retractable drum passes through the shell and is connected to the airbag clutch. The speed regulating body can clamp or loosen the rotating disk to hold or release the retractable drum.
[0020] Optionally, the passive rotation assembly includes a first sprocket sleeved on the reel, a second sprocket rotatably mounted on the mounting bracket via a gear rack, and a transmission chain for connecting the first sprocket and the second sprocket;
[0021] The passive rotation component also includes a driving gear mounted on the end of the bidirectional screw away from the cable arrangement drive motor. The cylinder clutch is located at the end of the driving gear. The cylinder clutch drives the driving gear to move linearly along its own axis so that the driving gear can selectively engage with the second sprocket.
[0022] Optionally, the passive rotation assembly further includes a protective cover disposed on the first sprocket and the second sprocket.
[0023] Optionally, a speed control device is further included on the frame, wherein the speed control device is electrically connected to the reel drive motor and the cable arranging drive motor and is used to control the rotation speed of the reel drive motor and the cable arranging drive motor.
[0024] Optionally, the speed control device includes a speed measuring module located on the retractable reel and a position sensor located on the mounting bracket;
[0025] During the lowering process of the salvage device, the speed measuring module can measure the speed of the drum drive motor. When the speed reaches a preset value, the speed measuring module sends a speed signal to the controller. The controller can also control the speed regulating body of the brake device to hold the rotating disk tightly to reduce the speed.
[0026] At this time, the position sensor detects the position of the cable arranging body on the bidirectional screw. When the cable arranging body is located at the end, the controller can control the cylinder clutch to extend and connect the second sprocket to the driving gear. The controller can also control the electromagnetic clutch to separate the cable arranging drive motor from the bidirectional screw.
[0027] The beneficial effects of the present invention are as follows: a deep-depth rope coring winch of the present invention has a frame arranged on a base, a reel capable of rotating inside the frame for releasing and reeling the wire rope, and a wire arranging device arranged on the top of the frame, which can perform reciprocating linear motion along the axial direction of the reel to arrange the wire rope, thereby ensuring that the wire rope is evenly arranged, reducing the wear of the wire rope and avoiding safety hazards such as core shedding. Moreover, a passive rotating assembly is arranged between the reel and the wire arranging device, so that the reel can be selectively connected to the wire arranging device through the passive rotating assembly when rotating to drive the wire arranging device to complete the wire arrangement, that is, the wire arranging device has two drives, namely, an active driving wire arranging device and a passive driving wire arranging device for wire arrangement. Furthermore, during the free descent process, when the weight of the salvage device and the rope itself is too large, the wire arranging device can be driven to move by a passive driving method, so as to better adapt to the wire arrangement speed, prevent the phenomenon of tangled ropes in the free-falling borehole, improve the wire arrangement effect, and ensure the stability of the wire arrangement. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a three-dimensional structural schematic diagram of a deep-depth rope coring winch of the present invention;
[0029] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;
[0030] Figure 3 It is a three-dimensional structural schematic diagram of the deep-depth rope coring winch of the present invention from another angle;
[0031] Figure 4 It is a partial structural schematic diagram of the passive rotating assembly of the deep-depth rope coring winch of the present invention (protective cover is not shown).
[0032] Description of Reference Numerals
[0033] 1: Base;
[0034] 2: rack;
[0035] 3: Wire rope retracting assembly; 31: Retracting drum; 32: Support; 33: Drum driving motor; 34: Airbag clutch; 35: Braking device; 351: Shell; 352: Rotating disk; 353: Speed regulating body;
[0036] 4: Cable arranging device; 41: Mounting bracket; 42: Bidirectional screw rod; 43: Cable arranging body; 44: Cable arranging driving motor; 45: Electromagnetic clutch; 46: Guide rod;
[0037] 5: passive rotating assembly; 51: first sprocket; 52: second sprocket; 53: transmission chain; 54: protective cover; 55: driving gear; 56: cylinder clutch;
[0038] 6: speed control device; 61: speed measurement module; 62: position sensor. DETAILED DESCRIPTION
[0039] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 1 The position of the middle reel drive motor 33 relative to the base 1 is defined as "upper". Figure 1 The position of the middle passive rotating assembly 5 relative to the frame 2 is defined as "right".
[0040] See also Figure 1-Figure 4As shown, a deep-depth rope coring winch proposed in an embodiment of the present invention comprises a base 1, a frame 2 located on the base 1, a wire rope retracting assembly 3 partially arranged in the frame 2, a wire arranging device 4 arranged above the frame 2, and a passive rotating assembly 5 arranged at one end of the wire rope retracting assembly 3. The wire rope retracting assembly 3 comprises a rotatable retracting drum 31, and the wire rope is discharged or reeled by rotating the retracting drum 31. One end of the wire rope is fixedly connected to the retracting drum 31, and the other end of the wire rope passes through the wire arranging device 4 and is connected to the salvage device. When the wire rope is discharged or reeled, the wire arranging body 43 of the wire arranging device 4 can make reciprocating linear motion along the axial direction of the retracting drum 31. One end of the passive rotating assembly 5 is connected to the retracting drum 31, and the other end of the passive rotating assembly 5 can be selectively connected to the wire arranging device 4. The retracting drum 31 can drive the passive rotating assembly 5 to drive the wire arranging device 4 to move.
[0041] In this embodiment, a deep-depth rope coring winch is provided with a frame 2 on a base 1, a reel 3 capable of rotation is provided inside the frame 2 for releasing and reeling the wire rope, and a wire arranging device 4 is provided on the top of the frame 2. The wire arranging device 4 can perform reciprocating linear motion along the axial direction of the reel 31 to arrange the wire rope, which can ensure that the wire rope is evenly arranged, reduce the wear of the wire rope, and avoid safety hazards such as core shedding. Moreover, a passive rotating component 5 is provided between the reel 3 and the wire arranging device 4, so that the reel 3 can be selectively connected to the wire arranging device 4 through the passive rotating component 5 as a drive when rotating to drive the wire arranging device 4 to move and complete the wire arrangement, that is, the wire arranging device 4 has two drives, namely, actively driving the wire arranging device 4 and passively driving the wire arranging device 4 to arrange the wire rope. Furthermore, during the free descent process, when the weight of the salvage device and the rope itself is too large, the wire arranging device 4 can be driven to move by passive driving to better adapt to the wire arranging speed, prevent the phenomenon of tangled ropes in the free-falling borehole, improve the wire arranging effect, and ensure the wire arranging stability.
[0042] Furthermore, the cable arranging device 4 includes mounting brackets 41 respectively mounted on both sides of the frame 2, bidirectional screws 42 mounted on the two mounting brackets 41, a cable arranging body 43 slidably mounted on the bidirectional screws 42, a cable arranging drive motor 44 disposed on one side of the mounting bracket 41, and an electromagnetic clutch 45 connected to the output end of the cable arranging drive motor 44. Both ends of the bidirectional screw 42 are mounted on the mounting bracket 41 through bearings. The cable arranging drive motor 44 is selectively connected to one end of the bidirectional screw 42 through the electromagnetic clutch 45, and the other end of the bidirectional screw 42 is selectively connected to the passive rotating component 5 through the cylinder clutch 56, and the cable arranging drive motor 44 and the passive rotating component 5 can both drive the bidirectional screw 42 to rotate.
[0043] Specifically, guide rods and guide wheels are provided on the cable arranging body 43 to better arrange the wire rope and prevent it from being worn. In addition, by providing a bidirectional screw rod 42, it is possible to ensure that the cable arranging drive motor always rotates in one direction, without considering the reciprocating motion of the axis of the cable arranging body 43, thereby reducing the motor requirements and better controlling the cable arranging.
[0044] Furthermore, the cable arranging device 4 further includes two guide rods 46 arranged parallel to the bidirectional screw rod 42, and the cable arranging body 43 is sleeved and slidably mounted on the guide rods 46. In this embodiment, the guide rods 46 are arranged to prevent the cable arranging body 43 from deflecting during movement.
[0045] Furthermore, the wire rope retracting assembly 3 includes a support 32 connected to the frame 2 and a retracting drum 31, and the retracting drum 31 is mounted on the support 32 through a bearing. The wire rope retracting assembly 3 also includes a drum drive motor 33 arranged on one side of the retracting drum 31, and an airbag clutch 34 connected to the drum drive motor 33 and the retracting drum 31. By setting the airbag clutch 34, the drum drive motor 33 can be selectively used to drive the retracting drum 31 and the retracting drum 31 to rotate the retracting drum 31 when the wire rope is lifted. Of course, it should be noted that when the wire rope and the salvage device are free to fall, the drum drive motor 33 is used to drive them when they need to be actively lowered at the beginning. Once the weight of the wire rope and the salvage device is too large, the retracting drum 31 will gradually increase with the rotation speed. At this time, the drum drive motor 33 will be disconnected from the retracting drum 31 by the airbag clutch 34, and the retracting drum 31 will roll freely. It should also be noted that, as the wire rope falls freely, the rotation speed of the retractable drum 31 will gradually increase.
[0046] Furthermore, in this embodiment, a speed control device 6 located on the frame 2 is also included. The speed control device 6 is electrically connected to the reel drive motor 33 and the wire arranging drive motor 44, and is used to control the rotation speed of the reel drive motor 33 and the wire arranging drive motor 44. Further, the speed control device 6 includes a speed measuring module 61 located on the reel-up and unreeling reel 31 and a position sensor 62 located on the mounting bracket 41. During the lowering process of the salvage device, the speed measuring module 61 can measure the rotation speed of the reel drive motor 33. When the rotation speed reaches a preset value, the speed measuring module 61 sends a speed signal to the controller, and the controller can also control the speed regulating body 353 of the brake device 35 to hold the rotating disk 352 tightly to reduce the speed. At this time, the position sensor 62 detects the position of the wire arranging body 43 on the bidirectional lead screw. When the wire arranging body 43 is at the end, the controller can control the cylinder clutch 56 to extend and connect the second sprocket 52 to the driving gear 55. The electromagnetic clutch 45 is also controlled by the controller to separate the wire arranging drive motor 44 from the bidirectional lead screw 42. It should be noted that the speed measuring module 61 will detect the rotation speed of the reel 31. When the rotation speed of the reel 31 reaches the preset critical value, the controller of the speed control device 6 will control the speed regulating body 353 to brake the rotating disk 352 to control the rotation speed of the reel 31. At the same time, the cylinder clutch 56 will be extended by the controller to connect the second sprocket 52 with the driving gear 55, thereby driving the bidirectional screw 42 to rotate. That is, during the free descent process, when the weight of the salvage device and the rope itself is too large, the bidirectional screw 42 of the wire arranging device 4 can be converted into a passive driving mode by the wire arranging drive motor 44. At this time, the wire arranging device is driven to move by passive driving, so as to better adapt to the wire arranging speed, prevent the phenomenon of tangled ropes in the free-falling borehole, improve the wire arranging effect, and ensure the stability of the wire arranging.
[0047] When the salvage device is salvaging, the reel 31 rotates in the first direction to discharge the wire rope, and the passive rotation component 5 is connected to the wire arranging device 4 to drive the wire arranging device 4 to move and discharge the wire rope.
[0048] When the salvage device is connected to the core for winding, the reel 31 is directed toward a second direction opposite to the first direction to wind up the wire rope, and the passive rotating component 5 is manually disconnected from the wire winding device 4. The active wire winding mode is adopted. The active wire winding can control the speed of the motor, that is, the effect of the wire winding can be adjusted at any time, which is more flexible.
[0049] Furthermore, the wire rope retracting assembly 3 further comprises a brake device 35 disposed between the airbag clutch 34 and the retracting drum 31. In order to prevent the retracting drum 31 from rotating too fast to affect the lower salvage device.
[0050] Furthermore, the brake device 35 includes a housing 351, a rotating disk 352 located in the housing 351, and a speed regulating body 353. The rotating disk 352 is mounted on the outer wall of the reel 31, and the speed regulating body 353 is fixedly installed in the inner cavity of the housing 351. One end of the reel 31 passes through the housing 351 and is connected to the airbag clutch 34. The speed regulating body 353 can clamp or release the rotating disk 352 to clamp or release the reel 31. The speed regulating body 353 brakes the rotating disk 352, which is hydraulically driven, and the hydraulic cylinder can be connected to the controller, so that when the speed of the reel 31 is too high, the controller controls the brake to reduce the rotation speed of the reel 31 to ensure the safety of the salvage below.
[0051] Furthermore, the passive rotating assembly 5 includes a first sprocket 51 sleeved on the reel 31, a second sprocket 52 rotatably mounted on the mounting bracket 41 through a gear frame, and a transmission chain 53 for connecting the first sprocket 51 and the second sprocket 52. The passive rotating assembly 5 also includes a driving gear 55 sleeved on the end of the bidirectional screw 42 away from the cable arrangement drive motor 44, and a cylinder clutch 56 is located at the end of the driving gear 55. The cylinder clutch 56 drives the driving gear 55 to move linearly along its own axis, so that the driving gear 55 can selectively mesh with the second sprocket 52. This adjustment method has a simple structure, is easy to operate, and has a better transmission effect.
[0052] Furthermore, the passive rotating assembly 5 further includes a protective cover 54 which is disposed on the first sprocket 51 and the second sprocket 52, so as to better protect the first sprocket 51, the second sprocket 52 and the driving gear 53.
[0053] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0055] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A deep-depth rope coring winch, characterized in that: It comprises a base (1), a frame (2) located on the base (1), a wire rope retracting assembly (3) partially disposed in the frame (2), a wire arrangement device (4) disposed above the frame (2), and a passive rotating assembly (5) disposed at one end of the wire rope retracting assembly (3); The wire rope retracting assembly (3) comprises a rotatable retracting drum (31), and the wire rope is discharged or reeled in by rotating the retracting drum (31); One end of the steel wire rope is fixedly connected to the reel (31), and the other end of the steel wire rope passes through the wire arranging device (4) and is connected to the salvage device. When the steel wire rope is discharged or reeled, the wire arranging body (43) of the wire arranging device (4) can perform reciprocating linear motion along the axial direction of the reel (31); One end of the passive rotating component (5) is connected to the reel (31), and the other end of the passive rotating component (5) can be selectively connected to the cable arranging device (4). The reel (31) can drive the passive rotating component (5) to drive the cable arranging device (4) to move.
2. The deep-depth rope coring winch according to claim 1, characterized in that: The cable arranging device (4) comprises mounting brackets (41) respectively mounted on both sides of the frame (2), bidirectional screw rods (42) mounted on the two mounting brackets (41), a cable arranging body (43) slidably mounted on the bidirectional screw rods (42), a cable arranging drive motor (44) arranged on one side of the mounting bracket (41), and an electromagnetic clutch (45) connected to the output end of the cable arranging drive motor (44); Both ends of the bidirectional screw rod (42) are mounted on the mounting bracket (41) via bearings; The cable arrangement drive motor (44) is selectively connected to one end of the bidirectional screw rod (42) via the electromagnetic clutch (45), and the other end of the bidirectional screw rod (42) is selectively connected to the passive rotation component (5) via the cylinder clutch (56).
3. The deep-depth rope coring winch according to claim 2, characterized in that: The cable arranging device (4) further comprises two guide rods (46) arranged in parallel with the bidirectional screw rod (42), and the cable arranging body (43) is slidably mounted on the guide rods (46).
4. The deep-depth rope coring winch according to claim 3, characterized in that: The wire rope retracting and releasing assembly (3) comprises a support (32) connected to the frame (2) and the retracting and releasing drum (31), wherein the retracting and releasing drum (31) is mounted on the support (32) via a bearing; The wire rope retracting and releasing assembly (3) further comprises a reel drive motor (33) arranged on one side of the retracting and releasing reel (31), and an airbag clutch (34) connected to the reel drive motor (33) and the retracting and releasing reel (31).
5. The deep-depth rope coring winch according to claim 4, characterized in that: The wire rope retracting and releasing assembly (3) further comprises a brake device (35) arranged between the airbag clutch (34) and the retracting and releasing drum (31).
6. The deep-depth rope coring winch according to claim 5, characterized in that: The brake device (35) comprises a housing (351), a rotating disk (352) located in the housing (351) and a speed regulating body (353); The rotating disk (352) is sleeved on the outer wall of the retractable reel (31), and the speed regulating body (353) is fixedly installed in the inner cavity of the outer shell (351). One end of the retractable reel (31) passes through the outer shell (351) and is connected to the airbag clutch (34). The speed regulating body (353) can clamp or loosen the rotating disk (352) to hold or release the retractable reel (31).
7. The deep-depth rope coring winch according to claim 6, characterized in that: The passive rotation assembly (5) comprises a first sprocket (51) sleeved on the reel (31), a second sprocket (52) rotatably mounted on the mounting bracket (41) via a gear rack, and a transmission chain (53) for connecting the first sprocket (51) and the second sprocket (52); The passive rotating assembly (5) also includes a driving gear (55) mounted on the end of the bidirectional screw rod (42) away from the cable arrangement driving motor (44), and the cylinder clutch (56) is located at the end of the driving gear (55). The cylinder clutch (56) drives the driving gear (55) to move linearly along its own axis, so that the driving gear (55) can selectively mesh with the second sprocket (52).
8. The deep-depth rope coring winch according to claim 7, characterized in that: The passive rotating assembly (5) further comprises a protective cover (54) which is arranged to cover the first sprocket (51) and the second sprocket (52).
9. The deep-depth rope coring winch according to claim 8, characterized in that: It also includes a speed control device (6) located on the frame (2), the speed control device (6) being electrically connected to the reel drive motor (33) and the cable arranging drive motor (44) and being used to control the rotation speed of the reel drive motor (33) and the cable arranging drive motor (44).
10. The deep-depth rope coring winch according to claim 9, characterized in that: The speed control device (6) comprises a speed measuring module (61) located on the retractable reel (31) and a position sensor (62) located on the mounting bracket (41); During the lowering process of the salvage device, the speed measuring module (61) can measure the rotation speed of the drum driving motor (33). When the rotation speed reaches a preset value, the speed measuring module (61) sends a speed signal to the controller. The controller can also control the speed regulating body (353) of the brake device (35) to hold the rotating disk (352) tightly to reduce the speed. At this time, the position sensor (62) detects the position of the cable arranging body (43) on the bidirectional lead screw. When the cable arranging body (43) is located at the end, the controller can control the cylinder clutch (56) to extend and connect the second sprocket (52) to the driving gear (55). The controller can also control the electromagnetic clutch (45) to separate the cable arranging drive motor (44) from the bidirectional lead screw (42).