Four-winding-drum engine-driven winching system for rocker arm derrick

Abstract

The invention relates to a four-winding-drum engine-driven winching system for a rocker arm derrick. The four-winding-drum engine-driven winching system comprises a power driving structure, a four-winding-drum speed reducing structure and a variable speed adjusting structure. The variable speed adjusting structure is arranged in a multi-shaft switching structure and comprises a power switching assembly, a third variable speed shaft and a fourth variable speed shaft, the power switching assembly comprises a driving switching gear and driven gear sets, and the driven gear sets are installed on the fourth variable speed shaft and meshed with the driving switching gear. Each driven gear set corresponds to one four-winding-drum speed reduction structure. By adopting the design that two persons respectively control the two four-winding-drum synchronous winching machines, compared with the mode that four persons respectively control four winching machines in the past, the number of operators is greatly reduced, and therefore the operation efficiency is improved; and speed change and reversing of power and power switching between the two groups of winding drums can be quickly realized, so that an operator can flexibly adjust the working state of the winching mill according to operation requirements.

Description

Technical Field

[0001] The present invention relates to a four-drum motorized winch system for a swing jib, belonging to the technical field of construction equipment for power transmission and transformation projects. Background Art

[0002] In the process of erecting transmission towers, large iron towers are mostly erected by using a ground double-swing jib. In order to achieve flexible control of the swing jib, especially the amplitude change and hoisting operations of its two side jibs, usually four independent motorized winches need to be equipped and operated and controlled by four people respectively.

[0003] The coordination and cooperation among the four motorized winches are relatively complex. Especially during the construction process with high precision and high efficiency, the communication and cooperation among the operators often become the key factors restricting the construction efficiency. Once a winch is operated improperly, it may have an adverse impact on the entire construction process and even cause safety accidents. In order to overcome the deficiencies of the traditional operation method, the industry has begun to explore the design scheme of a four-drum synchronous motorized winch. For example, the "Four-drum Synchronous Motorized Winch Rope Reeling Device, Operation Method and Double-swing Jib Hoisting Device" disclosed in Patent Publication No. CN119191149A. The synchronous motorized winch equipment is provided with a freely switchable slow gear and fast gear, and can realize the synchronous winching of the four drums;

[0004] However, four operators are still required for operation. The four operators not only need to receive professional training but also need to cooperate closely at the construction site, which undoubtedly increases the personnel cost and management difficulty of the construction team. Summary of the Invention

[0005] The purpose of the present invention is to provide a four-drum motorized winch system, a support structure and a tent for a swing jib to solve the problems raised in the above background art.

[0006] The technical solution of the present invention is as follows:

[0007] A four-drum motorized winch system for a swing jib includes a power drive structure, a four-drum speed reduction structure, and a speed change adjustment structure connected between the power drive structure and the four-drum speed reduction structure;

[0008] The speed change adjustment structure is arranged by using a multi-axis switching structure, including a power switching component, a third speed change shaft and a fourth speed change shaft. The power switching component includes a driving switching gear and a driven gear group. More than one group of the driven gear groups are installed on the fourth speed change shaft and meshed with the driving switching gear. Each group of the driven gear groups respectively corresponds to a group of four-drum speed reduction structures; the driving switching gear is arranged on the third speed change shaft and can move left and right along the axial direction of the third speed change shaft to realize the meshing of the driving switching gear with one of the groups of the driven gear groups or the simultaneous meshing with multiple groups of the driven gear groups.

[0009] Preferably, the power drive structure is a separately provided pole-changing multi-speed three-phase asynchronous motor.

[0010] Preferably, the speed change adjustment structure further includes a speed change transmission assembly, a first speed change shaft, and a second speed change shaft. The speed change transmission assembly includes a driving speed change gear and a driven speed change gear. The driving speed change gear is installed on the first speed change shaft, and the driven speed change gear is installed on the second speed change shaft and meshes with the driving speed change gear. By meshing the driving speed change gear with driven speed change gears with different numbers of teeth, different transmission ratios are achieved, thereby adjusting the output speed of the winch.

[0011] Preferably, the speed change adjustment structure further includes an anti-reverse brake assembly, a fifth speed change shaft, and a sixth speed change shaft. The anti-reverse brake assembly is arranged between the fifth speed change shaft and the sixth speed change shaft. The anti-reverse brake assembly includes a ratchet shaft and a ratchet; the ratchet shaft is provided with a spring pressing mechanism in cooperation and is connected to the sixth speed change shaft through the spring pressing mechanism.

[0012] Preferably, the four-drum reduction structure includes a drum shaft, and two sets of drum electric devices are arranged on the drum shaft.

[0013] Preferably, both ends of the drum shaft are installed on the box body through bearing seats. An axial retaining ring and an end cover are also arranged on the drum shaft, and the drum is fixed to the drum shaft through fasteners.

[0014] Preferably, each set of the drum electric devices is configured with two motorized drums.

[0015] Preferably, the reduction part of the four-drum reduction structure adopts a two-stage gear reduction system. The two-stage gear reduction system includes a large bevel gear, a small bevel gear, and multiple-stage transmission gears. The meshing of the large bevel gear and the small bevel gear realizes the first-stage reduction, and the meshing between the multiple-stage transmission gears realizes the second-stage reduction.

[0016] Preferably, a spacer sleeve is also arranged between the transmission gears.

[0017] Preferably, the four-drum reduction structure further includes a stationary friction plate and a moving friction plate. The stationary friction plate and the moving friction plate cooperate with each other to realize the braking function of the system. The stationary friction plate is fixedly installed on the bearing seat, and the moving friction plate is connected to the drum shaft.

[0018] The present invention has the following beneficial effects:

[0019] By adopting the design of two persons respectively controlling two four-drum synchronous winches, compared with the past method of four persons respectively controlling four winches, the number of operators is greatly reduced, thereby improving the operation efficiency;

[0020] The variable-speed adjustment structure adopts a multi-axis switching structure, which can quickly realize the speed change, direction change of power and the power switching between two groups of drums, enabling the operator to flexibly adjust the working state of the winch according to the operation requirements and further improving the operation efficiency.

[0021] The anti-reverse braking component in the variable-speed adjustment structure can effectively prevent the reverse rotation of the drum shaft when the winch system needs to stop or decelerate, ensuring the stability of the winch system and preventing safety accidents caused by unexpected situations.

[0022] The two groups of drum electric devices in the four-drum speed reduction structure can rotate synchronously or independently, meeting the requirements in different operation scenarios.

[0023] The fixed friction plate and the moving friction plate set in the four-drum speed reduction structure cooperate with each other to realize the braking function of the system, ensuring that the winch system can stop quickly and smoothly when needed. Description of the Drawings

[0024] Figure 1 It is a top view structure diagram of the present invention.

[0025] Figure 2 It is a structure diagram of the support structure.

[0026] Figure 3 It is an internal structure diagram of the four-drum electric winch.

[0027] Figure 4 It is a structure diagram of the variable-speed adjustment structure. The reference numerals in the figure are represented as:

[0028] 1. Support structure; 101. Support chassis; 102. Outer support; 103. Left support; 104. Right support; 105. Wire baffle; 2. Power drive structure; 201. Pole-changing multi-speed three-phase asynchronous motor; 3. Variable-speed adjustment structure; 4. Variable-speed transmission component; 401. Active variable-speed gear; 402. Driven variable-speed gear; 5. Power switching component; 501. Active switching gear; 502. Driven gear set; 6. Anti-reverse braking component; 601. Ratchet shaft; 602. Ratchet; 7. Four-drum speed reduction structure; 701. Drum shaft; 702. Drum electric device; 703. Motorized drum; 704. Bearing seat; 705. Shaft retaining ring; 715. End cover; 706. Two-stage gear reduction system; 707. Large bevel gear; 708. Small bevel gear; 709. Transmission gear; 710. Sleeve; 711. Fixed friction plate; 712. Moving friction plate; 8. First variable-speed shaft; 9. Second variable-speed shaft; 10. Third variable-speed shaft; 11. Fourth variable-speed shaft; 12. Fifth variable-speed shaft; 13. Sixth variable-speed shaft. Detailed Implementation Manner

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] As Figures 1-4 shown, it includes the main body of a motorized winch system, and the main body of the motorized winch system includes a support structure 1, a power drive structure 2, a speed change adjustment structure 3, and a four-drum reduction structure 7;

[0031] The support structure 1 includes a support chassis 101 arranged at the bottom of the main body of the motorized winch system, an outer support 102 arranged on the base, and a left support 103 and a right support 104. The ends of the left support 103 and the right support 104 are respectively connected to both sides of the outer support 102 and fixed by bolts. The support structure 1 is also provided with a wire baffle 105 in cooperation.

[0032] The power drive structure 2 is a separately arranged pole-changing multi-speed three-phase asynchronous motor 201.

[0033] The speed change adjustment structure 3 is arranged by adopting a multi-axis switching structure. The speed change adjustment structure 3 includes a speed change transmission assembly 4, and the speed change transmission assembly 4 is provided with a first speed change shaft 8 and a second speed change shaft 9 in cooperation; the speed change transmission assembly 4 is arranged between the first speed change shaft 8 and the second speed change shaft 9 and is used to realize the speed change and direction change of power; the speed change transmission assembly 4 includes a driving speed change gear 401 and a driven speed change gear 402. Among them, the driving speed change gear 401 is installed on the first speed change shaft 8, and the driven speed change gear 402 meshing with the driving speed change gear 401 is installed on the second speed change shaft 9; the driving speed change gear 401 can be manually controlled to move on the first speed change shaft through an external component. By meshing the driving speed change gear 401 with driven speed change gears 402 with different numbers of teeth, different transmission ratios are realized, thereby adjusting the output speed of the winch.

[0034] The speed change adjustment structure 3 also includes a power switching assembly 5. The power switching assembly 5 is provided with a third speed change shaft 10 and a fourth speed change shaft 11 in cooperation. The power switching assembly 5 is arranged between the third speed change shaft 10 and the fourth speed change shaft 11 and is used to realize the power switching between two groups of drums; the power switching assembly 5 includes a driving switching gear 501 and a driven gear group 502. The driving switching gear 501 that can be manually controlled to move left and right through an external component is installed on the third speed change shaft 10, and multiple groups of driven gear groups 502 meshing with the driving switching gear 501 are installed on the fourth speed change shaft 11. Each group of driven gear groups 502 corresponds to a group of four-drum reduction structures 7.

[0035] The speed change adjustment structure 3 further includes an anti-reverse braking assembly 6. The speed change adjustment structure 3 is provided with a fifth speed change shaft 12 and a sixth speed change shaft 13. The anti-reverse braking assembly 6 is arranged between the fifth speed change shaft 12 and the sixth speed change shaft 13 and is used to prevent reverse rotation when the winch system needs to stop or decelerate. The anti-reverse braking assembly 6 includes a ratchet shaft 601 and a ratchet 602. The ratchet shaft 601 is provided with a spring pressing mechanism and is connected to the sixth speed change shaft 13 through the spring pressing mechanism.

[0036] The four-drum reduction structure 7 includes a drum shaft 701, and two sets of drum electric devices 702 are arranged on the drum shaft 701. Each set of drum electric devices 702 is configured with two motorized drums 703. The two ends of the drum shaft 701 are installed on the box body through bearing seats 704. An axial retaining ring 705 and an end cover 715 are also arranged on the drum shaft 701, and the motorized drums 703 are firmly fixed on the drum shaft 701 through fasteners such as nuts.

[0037] The drum electric device 702 receives power from the power drive structure and transmits it to the motorized drum 703. Under electric drive, the motorized drum 703 can efficiently wind or release the cable. The motorized drum 703 is the part in the winch system that directly contacts the cable or sling, and they realize the winding and unwinding of the cable by rotating.

[0038] The reduction part of the four-drum reduction structure 7 adopts a two-stage gear reduction system 706. The two-stage gear reduction system 706 includes a large bevel gear 707, a small bevel gear 708, and multiple-stage transmission gears 709. The large bevel gear 707, the small bevel gear 708, and the multiple-stage transmission gears 709 achieve the reduction function through a precise meshing relationship; the meshing relationship between the large bevel gear 707 and the small bevel gear 708 realizes the first-stage reduction, and the multiple-stage transmission gears 709 realize the second-stage reduction through the meshing relationship, transmitting the torque from one stage to the next stage. A spacer sleeve 710 is also arranged between the transmission gears 709.

[0039] The spacer sleeve 710 is installed between the multiple-stage transmission gears 709 and is used to fix and position these gears to ensure that they can maintain the correct relative position and meshing relationship during high-speed rotation. This helps to reduce gear misalignment or loosening caused by vibration or impact, thus ensuring the stable operation of the reduction system; during the gear transmission process, there will be a certain amount of friction and wear between adjacent gears. The existence of the spacer sleeve 710 can reduce the direct contact area between adjacent transmission gears, thereby reducing the friction coefficient and wear rate and extending the service life of the gears.

[0040] The transmission gear 709 is installed on the reel shaft 701, and the meshing relationship between the large bevel gear 707 and the small bevel gear 708 realizes the first stage of deceleration to transmit the power of the speed adjustment structure 3 to one of the reel shafts 701. The reel shafts 701 are meshed with each other through the multi-stage transmission gears 709 to realize transmission connection;

[0041] The four-drum deceleration structure 7 also includes a fixed friction plate 711 and a dynamic friction plate 712, which cooperate with each other to achieve the braking function of the system, the fixed friction plate 711 is fixedly mounted on the bearing seat 704, and the dynamic friction plate 712 is connected to the drum shaft 701. The dynamic friction plate 712 is abutted against or separated from the fixed friction plate 711 through an external component.

[0042] The workflow of the present invention is as follows:

[0043] 1. Power starting: Start a separately set pole-changing multi-speed three-phase asynchronous motor 201 as a power source to provide power for the entire system.

[0044] 2. Power transmission and speed adjustment

[0045] Variable speed transmission: The power of the variable-pole multi-speed three-phase asynchronous motor 201 is transmitted from the first speed-changing shaft 8 to the second speed-changing shaft 9 through the variable speed transmission assembly 4. The driving speed-changing gear 401 installed on the first speed-changing shaft 8 meshes with the driven speed-changing gear 402 with different numbers of teeth on the second speed-changing shaft 9 to achieve different transmission ratios, thereby adjusting the output speed of the capstan.

[0046] The second speed-changing shaft 9 and the third speed-changing shaft 10 are stably connected and have power transmitted via gear transmission.

[0047] Power switching: Power switching between two groups of reels is achieved between the third speed-changing shaft 10 and the fourth speed-changing shaft 11 through the power switching assembly 5. The active switching gear 501 on the third speed-changing shaft 10 can move left and right, and by meshing the active switching gear 501 with different driven gear groups 502 on the fourth speed-changing shaft 11, power can be flexibly and selectively provided to a specific group of four-reel reduction structure 7.

[0048] Each driven gear set 502 is drivingly connected to the corresponding input end (large bevel gear 70) of the four-reel reduction structure 7.

[0049] The third speed-change shaft 10 and the fifth speed-change shaft 12 are stably connected and have power transmitted via gear transmission.

[0050] 3. Four-roll work and coordination

[0051] Reel Rotation: After the power transmission is in place, the four-reel deceleration structure 7 starts to work. Two groups of reels are sleeved on the reel shaft 701 and decelerated through the secondary gear deceleration system 706. The meshing of the large bevel gear 707 and the small bevel gear 708 achieves the first-stage deceleration, and the second-stage deceleration and torque transmission are achieved through the meshing relationship among the transmission gears 709 at all levels.

[0052] Synchronization or Independent Control: The rotation mode of the reel is flexibly controlled through the variable-speed adjustment structure 3. Specifically, the active switching gear 501 can move left and right on the third variable-speed shaft 10 to achieve selective meshing with different driven gear sets 502 on the fourth variable-speed shaft 11. When the active switching gear 501 meshes with any one of the driven gear sets 502, power can be provided for the corresponding four-reel deceleration structure 7 of this group to achieve independent rotation; and when the active switching gear 501 meshes with both driven gear sets 502 at the same time, the two four-reel deceleration structures 7 will rotate synchronously. This flexibility enables the operator to control the luffing and hoisting operations of the double-jib gin pole according to actual needs.

[0053] 4. Anti-Reverse and Braking

[0054] Anti-Reverse Brake: When the winch system needs to stop or decelerate, the anti-reverse brake assembly 6 disposed between the fifth variable-speed shaft 12 and the sixth variable-speed shaft 13 starts to work. The ratchet shaft 601 is provided with a spring pressing mechanism and is connected to the sixth variable-speed shaft 13 through the spring pressing mechanism. When the winch system needs to stop, the ratchet shaft 601 is controlled to mesh with the ratchet 602 to prevent the reverse rotation of the reel shaft 701.

[0055] Braking Function: The fixed friction plate 711 and the moving friction plate 712 in the four-reel deceleration structure 7 cooperate with each other to achieve the braking function of the system. When it is necessary to stop the rotation of the reel, the moving friction plate 712 contacts the fixed friction plate 711 and generates frictional force to quickly stop the system.

[0056] 5. End of Operation and Wrapping Up

[0057] Power Cut-off: After the operation is completed, first cut off the power source of the motor to ensure the safe stop of the system.

[0058] The above are only embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A four-drum motorized capstan system for a rocker arm, comprising a power drive structure (2), a four-drum speed reduction structure (7), and a speed adjustment structure (3) connected between the power drive structure (2) and the four-drum speed reduction structure (7), characterized in that: The speed adjustment structure (3) adopts a multi-axis switching structure, including a power switching assembly (5), a third speed shaft (10) and a fourth speed shaft (11); the power switching assembly (5) includes an active switching gear (501) and a driven gear set (502); more than one set of the driven gear sets (502) are mounted on the fourth speed shaft (11) and mesh with the active switching gear (501); each set of the driven gear sets (502) is respectively provided with a corresponding four-reel reduction structure (7); the active switching gear (501) is arranged on the third speed shaft (10) and can move left and right along the axial direction of the third speed shaft (10), so that the active switching gear (501) meshes with one set of the driven gear sets (502) or meshes with multiple sets of the driven gear sets (502) at the same time.

2. The four-drum motorized capstan system for rocker arm gripper according to claim 1, characterized in that: The power drive structure (2) is a separately arranged pole-changing multi-speed three-phase asynchronous motor (201).

3. The four-drum motorized capstan system for rocker arm gripper according to claim 1, characterized in that: The speed adjustment structure (3) further comprises a speed transmission assembly (4), a first speed shaft (8) and a second speed shaft (9); the speed transmission assembly (4) comprises a driving speed gear (401) and a driven speed gear (402); the driving speed gear (401) is mounted on the first speed shaft (8); the driven speed gear (402) is mounted on the second speed shaft (9) and meshes with the driving speed gear (401); different transmission ratios are achieved by meshing the driving speed gear (401) with the driven speed gear (402) having different numbers of teeth, thereby adjusting the output speed of the capstan.

4. The four-drum motorized capstan system for rocker arm gripper according to claim 3, characterized in that: The speed adjustment structure (3) further comprises an anti-reverse brake assembly (6), a fifth speed shaft (12) and a sixth speed shaft (13); the anti-reverse brake assembly (6) is arranged between the fifth speed shaft (12) and the sixth speed shaft (13); the anti-reverse brake assembly (6) comprises a ratchet shaft (601) and a ratchet (602); the ratchet shaft (601) is provided with a spring clamping mechanism and is connected to the sixth speed shaft (13) via the spring clamping mechanism.

5. The four-drum motorized capstan system for rocker arm gripper according to claim 1, characterized in that: The four-drum deceleration structure (7) comprises a drum shaft (701), and two groups of drum electric devices (702) are arranged on the drum shaft (701).

6. The four-drum motorized capstan system for rocker arm gripper according to claim 5, characterized in that: The two ends of the reel shaft (701) are mounted on the box body via bearing seats (704); a shaft retaining ring (705) and an end cover (715) are also provided on the reel shaft (701); and the reel is fixed on the reel shaft (701) via fasteners.

7. The four-drum motorized capstan system for rocker arm gripper according to claim 5, characterized in that: Each group of the reel electric equipment (702) is equipped with two motorized reels (703).

8. The four-drum motorized capstan system for rocker arm gripper according to claim 5, characterized in that: The deceleration part of the four-reel deceleration structure (7) adopts a two-stage gear deceleration system (706), and the two-stage gear deceleration system (706) includes a large bevel gear (707), a small bevel gear (708) and a multi-stage transmission gear (709). The large bevel gear (707) and the small bevel gear (708) are meshed to achieve a first stage deceleration, and the multi-stage transmission gears (709) are meshed to achieve a second stage deceleration.

9. The four-drum motorized capstan system for rocker arm gripper according to claim 8, characterized in that: A spacer (710) is also provided between the transmission gears (709).

10. The four-drum motorized capstan system for rocker arm as claimed in claim 5, characterized in that: The four-drum deceleration structure (7) also includes a fixed friction plate (711) and a dynamic friction plate (712), which cooperate with each other to achieve a braking function for the system, the fixed friction plate (711) is fixedly mounted on the bearing seat (704), and the dynamic friction plate (712) is connected to the drum shaft (701).

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