A pitch low-speed shaft brake oil cylinder dismounting auxiliary device

Abstract

A kind of luffing low-speed shaft brake oil cylinder dismounting auxiliary device belongs to shore-based bridge maintenance technical field, including mobile base, mobile base is equipped with lifting mechanism and hand-operated drive mechanism, lifting mechanism is scissor lifting structure, lifting mechanism is connected with hand-operated drive mechanism, lifting mechanism is lifted by hand-operated control, the top of lifting mechanism is equipped with top plate, the upper surface of bottom plate is rotatably installed with rotary seat, rotary seat is fixedly installed with support table, support table is U-shaped structure.Mobile base realizes the accurate alignment of device, scissor structure guarantees stable lifting, hand-operated drive is controlled height by hand fine adjustment, avoids traditional man-machine cooperation error problem from source;At the same time, rotary seat replaces hand-held oil cylinder fine adjustment, overall realizes safe alignment, stable lifting, the security of angle adjustment without contact, greatly reduces the risk of personnel injury in dismounting process.

Description

Technical Field

[0001] This utility model relates to the field of quay crane maintenance technology, and in particular to an auxiliary device for disassembling and assembling the hydraulic cylinder of the pitching low-speed shaft brake. Background Technology

[0002] The pitching mechanism of a quay crane (container quay crane) is the core device for raising / lowering the main beam. The low-speed shaft brake is a device that is directly connected to the low-speed end of the drum or reducer. Because the low-speed shaft has high torque and low speed, it needs to provide sufficient braking force through a hydraulic cylinder.

[0003] When the pitch low-speed shaft brake cylinder is damaged or needs repair, it needs to be removed and replaced. Usually, a crane is used to lift the hoist, which is then attached to the brake cylinder and fixed in position. The height of the crane is adjusted to maintain a relatively moderate tension in the brake cylinder, and then the fixing bolts of the cylinder are removed. When installing the brake cylinder, the crane is also controlled to determine its proper position, and then maintenance personnel make fine adjustments and fix it with bolts.

[0004] The existing methods for removing brake cylinders can lead to errors in human-machine coordination. When the pulling force is too tight or too loose, the bolts may cause injuries such as crushing or crushing to maintenance personnel at the moment of removal. When installing brake cylinders, maintenance personnel need to manually guide the cylinders for fine adjustments, which can also cause crushing injuries. To improve safety, temporary support structures are sometimes used, but these structures mainly assist in vertical and horizontal cylinder adjustments and do not have angle adjustment capabilities, making them inconvenient to use. Utility Model Content

[0005] To address the technical problems in the existing brake cylinder disassembly and assembly that require the cooperation of a crane and workers, which is difficult to achieve and increases the risk of injury to workers, while the temporary support structure is inconvenient to operate, this utility model provides an auxiliary device for disassembling and assembling a pitch low-speed shaft brake cylinder.

[0006] The technical solution of this utility model is as follows: This utility model provides As can be seen from the above technical solution, this utility model provides an auxiliary device for disassembling and assembling a pitch low-speed shaft brake cylinder, including a movable base. A lifting mechanism and a hand-cranked drive mechanism are installed on the movable base. The lifting mechanism is a scissor lift structure. The lifting mechanism is connected to the hand-cranked drive mechanism. The lifting mechanism is raised and lowered by hand-cranking. A top plate is installed on the top of the lifting mechanism. A rotating seat is rotatably installed on the upper surface of the base plate. A support platform is fixedly installed on the rotating seat. The support platform has a U-shaped structure. The mobile base, scissor lift structure, and hand-cranked drive mechanism form a collaborative system, eliminating the need for overhead cranes and chain hoists. This avoids the errors inherent in traditional human-machine collaboration from the outset. The mobile base ensures precise device alignment, the scissor lift structure guarantees stable lifting, and the hand-cranked drive allows for precise height control through manual fine-tuning. The combination of these three elements prevents crushing or crushing injuries caused by improper tension during bolt removal. Simultaneously, the rotating base replaces the hand-held hydraulic cylinder for fine-tuning, and the U-shaped structure adapts to the cylinder's shape. This combination eliminates the risk of hand-held crushing injuries and prevents the cylinder from slipping. Overall, it provides a safe alignment, stable lifting, and contactless angle adjustment, significantly reducing the risk of personal injury during assembly and disassembly.

[0007] Preferably, the support platform is fixedly connected to the rotating seat by several pillars. The pillars firmly connect the support platform and the rotating seat, ensuring stable support for the hydraulic cylinder and preventing localized deformation due to stress.

[0008] Preferably, a second handle is fixedly provided on the side wall of the rotating seat. The handle provides an angle adjustment point for the rotating seat. In conjunction with the rotation function of the rotating seat, the angle of the support platform can be adjusted without the personnel touching the hydraulic cylinder. Combined with the support function of the U-shaped support platform, the risk of hand injury is fundamentally eliminated. During the lifting and lowering process, the handle can also help maintain the angle of the support platform, avoid angle deviation during lifting and lowering, and ensure that the support platform is always accurately in contact with the bottom of the hydraulic cylinder.

[0009] Preferably, the lifting mechanism includes two first support rods and a second support rod. The first and second support rods form a scissor structure, with their intersecting centers rotatably connected via a connecting shaft. The bottom end of the first support rod is hinged to the movable base, and its top end is slidably connected to the base plate. The bottom end of the second support rod is slidably connected to the movable base, and its top end is hinged to the base plate. The connecting shaft ensures synchronized movement of the two scissor rods, preventing lifting deviation. The combination of hinge and sliding ensures smooth scissor action, reducing jamming. When used in conjunction with a hand-cranked drive mechanism, it allows for more stable and precise hand-cranked lifting actions, preventing the hydraulic cylinder from falling due to insufficient load and avoiding impacts caused by lifting jams. Furthermore, the wide lifting range of the double scissor rods enhances the versatility of the device.

[0010] Preferably, the top ends of the two first support rods are fixedly connected by a first connecting rod, and the bottom ends of the two second support rods are fixedly connected by a second connecting rod. Two opposing first guide grooves are fixedly provided on both sides of the lower surface of the base plate, and second guide grooves are provided on both sides of the movable base. The two ends of the first connecting rods are slidably disposed within the first guide grooves, and the two ends of the second connecting rods are slidably disposed within the second guide grooves. The connecting rods connect the scissor structure into a whole, enhancing stress stability and preventing deformation of individual support rods. The guide grooves provide a sliding trajectory for the connecting rods, preventing deviation and jamming. The scissor structure reinforced by the connecting rods can more stably transmit the hand-cranked driving force, and the guide groove limiting function makes the lifting height controlled by the hand more precise. The combination of these three functions reduces the risk of mechanical failure and improves operational accuracy. Simultaneously, the limiting function of the guide grooves, combined with the alignment function of the movable base, ensures that after the device is moved into position, the lifting direction and the position of the hydraulic cylinder are precisely matched through the guide grooves, reducing alignment deviation and improving assembly and disassembly efficiency.

[0011] Preferably, both ends of the first and second connecting rods are rotatably equipped with rollers. The rollers convert sliding friction into rolling friction, which greatly reduces the resistance between the connecting rod and the guide groove. On the one hand, this makes the operation of the hand-cranked drive mechanism easier and reduces the intensity of personnel operation, especially when disassembling and assembling heavy hydraulic cylinders, avoiding operational errors caused by excessive force. On the other hand, it reduces the wear of the connecting rod and the guide groove, extends the service life of the device, and reduces maintenance costs.

[0012] Preferably, the hand-cranked drive mechanism includes a horizontally arranged drive rod, with a sleeve threadedly connected to the drive rod. One end of the sleeve is fixedly connected to a second connecting rod, and the drive rod is connected to a hand-cranked sprocket assembly. The self-locking function of the threaded connection prevents the lifting mechanism from automatically descending due to the weight of the cylinder, ensuring that the cylinder will not suddenly fall after the bolts are removed. Furthermore, the fine adjustment characteristics of the threaded drive, combined with the stable transmission of the sprocket assembly, allow the handwheel operation to precisely correspond to the lifting height. Combined with the smooth transmission of the guide groove and rollers, the support platform can quickly contact the bottom of the cylinder, improving assembly and disassembly efficiency.

[0013] Preferably, the hand-cranked sprocket assembly includes a first sprocket, which is fixedly mounted on the end of the drive rod away from the second connecting rod. A second sprocket is connected to the first sprocket via a chain. The second sprocket is rotatably mounted on a fixed plate, which is vertically fixed on a movable base. A handwheel is rotatably mounted on the fixed plate and fixedly connected to the second sprocket. The stable sprocket transmission ratio ensures precise synchronization between handwheel operation and drive rod rotation. Combined with the fine adjustment of the threaded connection, this allows for more accurate control of the lifting height. The fixed plate provides stable support for the sprocket and handwheel, preventing transmission misalignment. Combined with the structural stability of the movable base, this enhances the overall reliability of the device.

[0014] Preferably, a first handle is fixedly mounted on the mobile base, with the first handle on the same side as the handwheel. The handle provides a point of force application for alignment of the mobile base. Combined with the lifting control of the handwheel, personnel can complete the entire process of pushing for alignment, manual lifting, and hand-holding for stability from the same side without changing their standing position, reducing errors caused by switching actions. During lifting and angle adjustment, the handle can also help stabilize the personnel's body. Combined with the smooth lifting of the scissor lift structure and the angle adjustment of the rotating seat, it prevents personnel from becoming unstable due to slight shaking of the device. The handwheel and handle on the same side make the operation process more seamless, improving disassembly and assembly efficiency and enhancing safety through operational stability. Especially in narrow maintenance spaces, it can greatly improve operational flexibility.

[0015] Preferably, the drive rod and the center line of the moving base are coaxially aligned. This coaxial design ensures that the force from the drive rod is evenly distributed to both scissor lift structures. Combined with the synchronous action of the connecting shaft, this ensures perfectly synchronized lifting of the scissor lifts and lowers, preventing cylinder tilting due to uneven force distribution. The structural symmetry with the moving base reduces center of gravity shift during device movement, resulting in smoother base movement. Combined with the alignment function of the first handle, this enhances the device's maneuverability in confined spaces. Furthermore, even force distribution extends the service life of the drive rod and scissor lift structures. Combined with the drag-reducing and wear-resistant properties of the rollers, this further reduces device maintenance costs.

[0016] As can be seen from the above technical solutions, the advantages of this utility model are: 1. The combination of a movable base, scissor lift structure, and hand-cranked drive mechanism ensures precise device alignment, stable lifting, and height control through manual fine-tuning. This combination prevents injuries from improper tension during bolt removal, eliminating the need for overhead cranes and chain hoists and mitigating traditional human-machine interface errors from the outset. Furthermore, a rotating base replaces the hand-held hydraulic cylinder for fine-tuning, and the U-shaped structure adapts to the cylinder's shape. This combination eliminates the risk of hand-held crushing injuries and prevents cylinder slippage, providing comprehensive safety assurance for safe alignment, stable lifting, and contactless angle adjustment, significantly reducing the risk of injury during assembly and disassembly.

[0017] 2. The handle provides a point of force for positioning the mobile base. Combined with the lifting control of the handwheel, personnel can complete the entire process of pushing and positioning, hand-cranking and lifting, and holding for stability from the same side without changing positions, reducing errors caused by switching actions. During lifting and angle adjustment, the handle can also help stabilize the personnel's body. Combined with the smooth lifting of the scissor lift and the angle adjustment of the rotating seat, it prevents personnel from becoming unstable due to slight shaking of the device. The handwheel and handle on the same side make the operation process more seamless, which can not only improve the efficiency of disassembly and assembly, but also enhance safety through operational stability. Especially in narrow maintenance spaces, it can greatly improve operational flexibility. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the auxiliary device for disassembling and assembling the low-speed shaft brake cylinder according to one or more embodiments of the present invention. Figure 2 This is a partially enlarged structural schematic diagram of the auxiliary device for disassembling and assembling the low-speed shaft brake cylinder of the present invention according to one or more embodiments. Figure 3 This is a side view of the auxiliary device for disassembling and assembling the low-speed shaft brake cylinder according to one or more embodiments of the present invention. The components represented by the various reference numerals in the diagram are: 1. Movable base; 2. First handle; 3. Lifting mechanism; 4. Base plate; 5. Rotating seat; 6. Support platform; 7. Second handle; 8. Column; 9. Wheel; 10. First support rod; 11. Second support rod; 12. Connecting shaft; 13. First connecting rod; 14. Second connecting rod; 15. First guide groove; 16. Second guide groove; 17. Hand crank drive mechanism; 18. Sleeve; 19. Drive rod; 20. Bearing seat; 21. First sprocket; 22. Chain; 23. Second sprocket; 24. Handwheel; 25. Fixing plate; 26. Roller. Detailed Implementation

[0020] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] Example 1 In a typical embodiment of this utility model, such as Figures 1-3As shown, an auxiliary device for disassembling and assembling a low-speed pitch shaft brake cylinder is proposed, comprising: a movable base 1, a lifting mechanism 3, a base plate 4, a rotating seat 5, a support platform 6, and a hand-cranked drive mechanism 17. The lifting mechanism 3 and the hand-cranked drive mechanism 17 are mounted on the movable base 1, and the lifting mechanism 3 is connected to the hand-cranked drive mechanism 17 so that the lifting action of the lifting mechanism 3 can be controlled by hand. The base plate 4 is mounted on the top of the lifting mechanism 3 and can move vertically with the lifting mechanism 3. The rotating seat 5 is rotatably mounted on the upper surface of the base plate 4. The support platform 6 is fixedly mounted on the rotating seat 5 and can move vertically with the base plate 4. At the same time, it can also rotate around the axis with the rotating seat 5. The support platform 6 has a U-shaped structure to support the old cylinder.

[0022] By using the movable base 1, lifting mechanism 3 and rotating seat 5 together, the horizontal movement, lifting and lowering of the support platform 6 and the adjustment of the horizontal angle can be realized to meet the support needs of old hydraulic cylinders at different heights, positions and angles. No crane or other hoisting equipment is required. The whole system is convenient to use and has high safety.

[0023] Several wheels 9 are fixedly installed on the bottom of the mobile base 1. The wheels 9 are brake wheels with braking function, which facilitates the movement of the mobile base 1 and the fixation of its position. A first handle 2 is fixedly installed on one side of the mobile base 1. The staff can hold the first handle 2 to push the mobile base 1 to move and transfer, which is convenient for use.

[0024] The lifting mechanism 3 is a scissor lift structure. Specifically, the lifting mechanism 3 includes a first support rod 10, a second support rod 11, a connecting shaft 12, a first connecting rod 13, and a second connecting rod 14. There are two of each of the first support rod 10 and the second support rod 11. One first support rod 10 and one second support rod 11 form a scissor structure. The two scissor structures are arranged opposite to each other, and the intersection center of the two scissor structures is rotatably connected through the connecting shaft 12. The bottom end of the first support rod 10 is hinged to the movable base 1, and the top end of the first support rod 10 is slidably connected to the base plate 4. The bottom end of the second support rod 11 is slidably connected to the movable base 1, and the top end of the second support rod 11 is hinged to the base plate 4.

[0025] The top ends of the two first support rods 10 are fixedly connected by a first connecting rod 13, and the bottom ends of the two second support rods 11 are fixedly connected by a second connecting rod 14. Two opposing first guide grooves 15 are fixedly provided on both sides of the lower surface of the base plate 4. The first guide grooves 15 are channel steel structures and are fixedly provided on the lower surface of the base plate 4 by welding and extend along the length of the base plate 4. The two ends of the first connecting rod 13 are slidably disposed in the corresponding first guide grooves 15. The movable base 1 has second guide grooves 16 on both sides. The second guide grooves 16 are parallel to the first guide grooves 15. The two ends of the second connecting rod 14 are slidably disposed in the corresponding second guide grooves 16 to achieve guidance and ensure the stability of the lifting mechanism 3's lifting action.

[0026] In this embodiment, as Figure 3 As shown, rollers 26 are rotatably provided at both ends of the first link 13 and the second link 14 to reduce wear on the ends of the first link 13 and the second link 14, as well as the first guide groove 15 and the second guide groove 16, and improve service life.

[0027] Understandably, in order to improve the support stability of the base plate 4, a diagonal bracing telescopic unit (such as an inclined hydraulic cylinder) can be set between the connecting shaft 12 and the lower surface of the base plate 4. The two ends of the diagonal bracing telescopic unit are respectively hinged to the connecting shaft 12 and the lower surface of the base plate 4. Specifically, one end of the diagonal bracing telescopic unit is hinged to the connecting shaft 12, and the other end is hinged to the lower surface of the base plate 4 away from the lifting mechanism 3, so as to play an auxiliary support role and improve the support stability of the base plate 4.

[0028] like Figure 2 As shown, the hand-cranked drive mechanism 17 includes a sleeve 18, a drive rod 19, a hand-cranked sprocket assembly, and a fixing plate 25. The fixing plate 25 is welded and fixed to the movable base 1, and is vertically positioned close to the first handle 2. The fixing plate 25 serves as a mounting support for the hand-cranked sprocket assembly. The drive rod 19 is laterally rotatably mounted on the movable base 1, and is coaxial with the centerline of the movable base 1 along its length. A bearing seat 20 is fixedly mounted on the movable base 1, and the drive rod 19 is fixedly connected to the inner ring of the bearing within the bearing seat 20, allowing the drive rod 19 to rotate around its axis. The drive rod 19 has a screw structure. The drive rod 19 has an external thread, and the sleeve 18 has an internal thread. The sleeve 18 is threadedly connected to the drive rod 19. One end of the sleeve 18 is fixedly connected to the second connecting rod 14. The end of the drive rod 19 away from the second connecting rod 14 is connected to the hand-cranked sprocket assembly. Thus, the hand-cranked sprocket assembly can be used to drive the drive rod 19 to rotate around the axis. Then, through the threaded engagement, the sleeve 18 is driven to move along its axial direction, thereby pushing the second connecting rod 14 to move laterally along the second guide groove 16. With the setting of the connecting shaft 12, the angle between the first support rod 10 and the second support rod 11 is changed, thereby changing the vertical position of the base plate 4 and the support platform 6 above it.

[0029] The hand-cranked sprocket assembly includes a first sprocket 21, a chain 22, a second sprocket 23, and a handwheel 24. The first sprocket 21 is fixedly mounted on the end of the drive rod 19 away from the second connecting rod 14 and is coaxial with the drive rod 19. The second sprocket 23 is rotatably mounted on a fixed plate 25 and is located directly above the first sprocket 21. The second sprocket 23 and the first sprocket 21 are in the same vertical plane and are connected to the first sprocket 21 via the chain 22. The handwheel 24 is rotatably mounted on the fixed plate 25 and is coaxial with the second sprocket 23. The handwheel 24 is fixedly connected to the second sprocket 23 and can drive the second sprocket 23 to rotate around the axis. In this embodiment, the sleeve 18 and the drive rod 19 are made of threaded pairs with self-locking properties, such as trapezoidal threads and sawtooth threads. When the handwheel 24 stops rotating, the friction between the threads can prevent the sleeve 18 from moving axially due to external forces (such as the load on the support platform 6), thereby keeping the lifting mechanism 3 at the current height and achieving the limit.

[0030] The support platform 6 is fixedly installed on the base plate 4 via the rotating seat 5. The rotating seat 5 is a rotating structure, including a horizontally arranged bearing and a seat body. A connecting column is fixedly provided at the center of the base plate 4. The connecting column is fixedly connected to the inner ring of the bearing. The seat body of the rotating seat 5 is fixedly connected to the outer ring of the bearing. The support platform 6 is fixedly installed on the seat body, thereby realizing the rotational connection between the rotating seat 5 and the support platform 6.

[0031] like Figure 1 As shown, the support platform 6 has a U-shaped structure. The bottom of the support platform 6 is welded and fixed to the rotating seat 5. The support platform 6 has a flange, which is fixedly connected to the rotating seat 5 by several pillars 8, thereby ensuring the support stability of the support platform 6.

[0032] In this embodiment, a second handle 7 is also fixedly provided on the side wall of the rotating seat 5. The second handle 7 is a horizontally arranged rod-shaped structure, so that the operator can push the rotating seat 5 to rotate and adjust it.

[0033] The specific working principle is as follows: The worker pushes the entire device to be directly below the old cylinder to be removed using the first handle 2, and brakes the wheel 9 to limit the overall position of the auxiliary device. The worker manually turns the handwheel 24, which drives the second sprocket 23 to rotate around the axis. Through the cooperation of the chain 22 and the first sprocket 21, the drive rod 19 rotates around the axis, thereby controlling the sleeve 18 to move laterally, so as to push the second connecting rod 14 to move laterally along the second guide groove 16. With the setting of the connecting shaft 12, the angle between the first support rod 10 and the second support rod 11 is changed, thereby changing the vertical position of the base plate 4 and the support platform 6 above it, so that the support platform 6 rises to a set distance from the old cylinder. Then, the worker holds the second handle 7 to change the horizontal angle of the support platform 6, so that the support platform 6 is directly facing the old cylinder. The worker then turns the handwheel 24 again, and continues to hold the second handle 7 to maintain the angle of the support platform 6 until the support platform 6 rises to contact the bottom of the old cylinder. The worker then removes the fixing bolts that fix the old cylinder, turns the handwheel 24 to lower the lifting mechanism 3, releases the brake, and moves the device.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary device for disassembling and assembling a low-speed pitch shaft brake cylinder, comprising: The mobile base (1) is characterized in that a lifting mechanism (3) and a hand-cranked drive mechanism (17) are installed on the mobile base (1). The lifting mechanism (3) is a scissor lift structure. The lifting mechanism (3) is connected to the hand-cranked drive mechanism (17). The lifting mechanism (3) is raised and lowered by hand-cranking. A base plate (4) is installed on the top of the lifting mechanism (3). A rotating seat (5) is rotatably installed on the upper surface of the base plate (4). A support platform (6) for supporting the oil cylinder is fixedly installed on the rotating seat (5). The support platform (6) is a U-shaped structure.

2. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 1, characterized in that, The support platform (6) is fixedly connected to the rotating seat (5) by several pillars (8).

3. The auxiliary device for disassembling and assembling the low-speed pitch shaft brake cylinder according to claim 1, characterized in that, A second handle (7) is fixedly provided on the side wall of the rotating seat (5).

4. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 1, characterized in that, The lifting mechanism (3) includes a first support rod (10) and a second support rod (11) that form a scissor structure. There are two scissor structures. The intersection centers of the two scissor structures are rotatably connected by a connecting shaft (12). The bottom end of the first support rod (10) is hinged to the movable base (1), and the top end of the first support rod (10) is slidably connected to the base plate (4). The bottom end of the second support rod (11) is slidably connected to the movable base (1), and the top end of the second support rod (11) is hinged to the base plate (4).

5. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 4, characterized in that, The top ends of the two first support rods (10) are fixedly connected by the first connecting rod (13), and the bottom ends of the two second support rods (11) are fixedly connected by the second connecting rod (14). The two ends of the first connecting rod (13) are slidably set in the first guide groove (15) on the lower surface of the base plate (4), and the two ends of the second connecting rod (14) are slidably set in the second guide groove (16) on both sides of the movable base (1).

6. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 5, characterized in that, Both ends of the first link (13) and the second link (14) are equipped with rollers (26) that rotate.

7. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 5, characterized in that, The hand-cranked drive mechanism (17) includes a horizontally arranged drive rod (19), which is threadedly connected to a sleeve (18). One end of the sleeve (18) is fixedly connected to the second connecting rod (14), and the drive rod (19) is connected to a hand-cranked sprocket assembly.

8. The auxiliary device for disassembling and assembling the low-speed axis brake cylinder according to claim 7, characterized in that, The hand-cranked sprocket assembly includes a first sprocket (21), which is fixedly mounted on the end of the drive rod (19) away from the second connecting rod (14). The first sprocket (21) is connected to a second sprocket (23) via a chain (22). The second sprocket (23) is rotatably mounted on a fixed plate (25), which is vertically fixed on a movable base (1). A handwheel (24) is rotatably mounted on the fixed plate (25), and the handwheel (24) is fixedly connected to the second sprocket (23).

9. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 8, characterized in that, A first handle (2) is fixedly provided on the mobile base (1), and the first handle (2) is on the same side as the handwheel (24).

10. The auxiliary device for disassembling and assembling the low-speed pitch axis brake cylinder according to claim 7, characterized in that, The drive rod (19) is coaxial with the center line of the moving base (1) in the length direction.

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