Knuckle bearing loading device for maintenance of lagging jack trolley

Abstract

The invention discloses a knuckle bearing loading device for arch frame trolley maintenance, and relates to the technical field of bearing loading equipment. The knuckle bearing loading device comprises a rack and the like, the rack is rotationally connected with a turning cover, the rack is fixedly connected with a protective shell, a pushing assembly is arranged on the rack, a cavity block is fixedly connected in the rack, a mounting plate frame is fixedly connected in the rack, and a flow guide pipe is fixedly connected and communicated between the mounting plate frame and the cavity block; and the mounting plate frame and the cavity block are fixedly connected and communicate with each other through a backflow pipe, a storage barrel is in threaded connection with the interior of the rack, and a placement frame is slidably connected with the interior of the storage barrel. By means of the top frame, the cavity block and other components, uniform pressure can be applied to the bearing so as to avoid deviation of the bearing during installation, the bearing can be cooled and slightly shrunk, and therefore the bearing can enter an installation hole of the arch frame trolley more easily, and the bearing installation efficiency is improved. Therefore, the bearing is prevented from being rubbed with the hole wall and abraded when the bearing is installed.

Description

Technical Field

[0001] The invention relates to the technical field of bearing installation equipment, and in particular to a joint bearing installation device for arch frame trolley maintenance. Background Art

[0002] Bearings are key components used to support rotating shafts and reduce friction in mechanical systems. By converting sliding friction into rolling friction, bearings significantly reduce the friction between moving parts and improve mechanical efficiency and operating stability. Bearings are widely used in various mechanical equipment, such as automobiles, machine tools, motors, fans, and arch trolleys.

[0003] There are not only large bearings but also small bearings on the arch frame trolley. Different types of bearings play their respective roles in different parts of the trolley. When the small joint bearing on the arch frame trolley is damaged and needs to be replaced, workers usually take out the old bearing first and align the new bearing with the mounting hole, and then install the new bearing into the mounting hole of the arch frame trolley by knocking. However, this method is not only difficult to ensure that the bearing is evenly stressed during installation, but also because the size of the mounting hole and the bearing is perfectly matched, it is easy for the bearing to scratch the hole wall of the arch frame trolley during installation, thereby causing wear of the bearing and the machine.

[0004] Based on the above situation, the present invention proposes a scratch-proof spherical bearing installation device for arch trolley maintenance. Summary of the invention

[0005] In order to overcome the disadvantage that the existing spherical bearings are mainly installed by workers knocking during installation, which not only makes it difficult to ensure that the bearings are evenly stressed during installation, but also because the size of the installation hole is perfectly matched to the bearing, it is easy for the bearings to be scratched against the hole wall of the arch trolley during installation, thereby causing wear of the bearings and the machine, the present invention provides a scratch-resistant spherical bearing installation device for arch trolley maintenance.

[0006] A joint bearing loading device for arch frame trolley maintenance comprises a frame, a flap, a protective shell, a pushing assembly, a return pipe, a guide pipe, a cavity block, a mounting plate frame, a storage cylinder, a placement rack and an electric rotary blade. The frame is rotatably connected to the flap, the frame is fixedly connected to the protective shell, the frame is provided with a pushing assembly, the cavity block is fixedly connected inside the frame, the mounting plate frame is fixedly connected inside the frame, the guide pipe is fixedly connected and communicated between the mounting plate frame and the cavity block, the return pipe is fixedly connected and communicated between the mounting plate frame and the cavity block, the storage cylinder is threadedly connected inside the frame, the placement rack is slidably connected inside the storage cylinder, and the electric rotary blade is rotatably connected inside the mounting plate frame.

[0007] Further explanation, the pushing assembly includes a top frame, a first air cylinder, an air guide tube, a movable frame, a pulling rotating frame and a second air cylinder. The top frame is slidably connected inside the frame, the first air cylinder is fixedly connected inside the frame, the piston rod of the first air cylinder is fixedly connected to the top frame, the second air cylinder is fixedly connected to the frame, the second air cylinder is fixedly connected to the first air cylinder and communicated with the air guide tube, the frame is slidably connected to the movable frame, the piston rod of the second air cylinder is fixedly connected to the movable frame, the frame is rotatably connected to the pulling rotating frame, and the pulling rotating frame is movably connected to the movable frame.

[0008] Further description, one side of the top frame is provided with ventilation slots which are evenly spaced around the circumference, and the other side of the top frame is provided with ventilation holes which are evenly spaced around the circumference.

[0009] Further description, the air guide pipe is fixedly connected with an air release valve.

[0010] Further description, the second gas cylinder is fixedly connected with a one-way valve.

[0011] Further description, it also includes a heating mechanism, which is arranged on the frame. The heating mechanism includes a contact frame, a battery and a heating wire. The battery is fixedly connected to the frame, and the contact frame is fixedly connected between the battery and the frame. The battery is fixedly connected to the heating wire, and the heating wire is located inside the contact frame.

[0012] Further description, it also includes a cooling mechanism, which is arranged on the frame, and the cooling mechanism includes a rotating shaft, fan blades, a spur gear assembly, a transmission belt and a rack. The rotating shaft is rotatably connected to the inside of the frame, and the fan blades that are symmetrically distributed front and back are fixedly connected to the rotating shaft, wherein the spur gear assembly includes a large gear and a small gear, and the large gear is meshed with the small gear, and the large gear and the small gear in the spur gear assembly are both rotatably connected to the inside of the frame, and a transmission belt that is symmetrically distributed front and back is sleeved between the small gear in the spur gear assembly and the rotating shaft, and the piston rod of the first air cylinder is fixedly connected to the rack, and the rack is meshed with the large gear in the spur gear assembly.

[0013] Further description, it also includes a limiting mechanism, which is arranged on the frame. The limiting mechanism includes a limiting block, a rotating rod and a torsion spring. The rotating rods equidistantly distributed axially and circumferentially are all rotatably connected to the frame, and a torsion spring is fixed between the rotating rod and the frame. The flip cover is rotatably connected to the rotating rods symmetrically distributed front and back, and a torsion spring is also fixed between the rotating rod and the flip cover. The rotating rod is fixed to the limiting block.

[0014] Further description, it also includes a fixing mechanism, which is arranged on the contact frame. The fixing mechanism includes a suction cup, a sliding rod and a tension spring. The sliding rods distributed equidistantly around the circumference are all slidably connected to the contact frame. A tension spring is fixed between the sliding rod and the contact frame, and the sliding rod is fixed with a suction cup.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention, through components such as the top frame and the cavity block, can not only apply uniform pressure to the bearing to avoid deviation of the bearing during installation, but also cool the bearing and slightly shrink it, so that the bearing can more easily enter the mounting hole of the arch trolley, thereby avoiding scratches and wear between the bearing and the hole wall during installation, thereby improving the practicability of the joint bearing installation device.

[0016] 2. The present invention can heat the mounting hole of the arch trolley through components such as a contact frame and a heating wire, so that the inner diameter of the mounting hole is slightly increased, so that the bearing can enter the mounting hole more easily, thereby avoiding scratches and wear between the bearing and the hole wall, thereby improving the practicality of the joint bearing installation device.

[0017] 3. The present invention can speed up the air circulation inside the frame through components such as fan blades and rotating shafts, so that the cold air can take away the heat of the bearing more quickly, thereby improving the cooling effect of the device on the bearing, so that the bearing can enter the installation hole more easily, and avoid scratches and wear of the bearing, thereby improving the protective effect of the joint bearing installation device on the bearing.

[0018] 4. The present invention uses components such as a limit block and a torsion spring to limit the bearing when the top frame pushes the bearing to the right, thereby keeping the bearing in a vertical state and preventing it from tilting, thereby avoiding affecting the subsequent installation effect due to the tilt of the bearing and improving the installation quality of the joint bearing installation device.

[0019] 5. The present invention uses components such as suction cups and tension springs to fix components such as a frame after a worker aligns the bearing with the mounting hole, thereby preventing deviations due to accidental shaking when the worker installs the bearing into the mounting hole, which affects the subsequent installation of the bearing and improves the stability of the joint bearing installation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the frame, flip cover, protective shell and other components of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of components such as the return pipe, the guide pipe and the cavity block of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the components such as the mounting plate rack, the storage cylinder and the placement rack of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the frame, contact frame, battery and other components of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the contact frame, battery, heating wire and other components of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the components such as the rotating shaft, fan blades and spur gear assembly of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the spur gear assembly, transmission belt, rack and other components of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the limit block, rotating rod, torsion spring and other components of the present invention.

[0029] Fig.10 It is a three-dimensional structural schematic diagram of the suction cup, sliding rod, tension spring and other components of the present invention.

[0030] Figure numbers: 1_frame, 11_flip cover, 101_protective shell, 102_top frame, 103_first air cylinder, 104_air guide pipe, 105_moving frame, 12_pulling rotating frame, 13_second air cylinder, 14_return pipe, 1401_air guide pipe, 15_cavity block, 16_mounting plate frame, 17_storage cylinder, 18_placing rack, 19_electric rotating blade, 2_contact frame, 21_battery, 22_heating wire, 3_rotating shaft, 31_fan blade, 32_spur gear assembly, 33_transmission belt, 34_rack, 4_limiting block, 41_rotating rod, 42_torsion spring, 5_suction cup, 51_sliding rod, 52_tension spring. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1: A spherical bearing installation device for arch trolley maintenance, such as Figure 1-Figure 4 As shown, it includes a frame 1, a flip cover 11, a protective shell 101, a pushing assembly, a return pipe 14, a guide pipe 1401, a cavity block 15, a mounting plate frame 16, a storage tube 17, a placement rack 18 and an electric rotary blade 19. The right part of the frame 1 is rotatably connected to the flip cover 11, the top of the frame 1 is fixedly connected to the protective shell 101, the frame 1 is provided with a pushing assembly, the right side of the frame 1 is fixedly connected to the cavity block 15, the left side of the frame 1 is fixedly connected to the mounting plate frame 16, the mounting plate frame 16 and the cavity block 15 are fixedly connected and connected with the guide pipe 1401, the mounting plate frame 16 and the cavity block 15 are fixedly connected and connected with the return pipe 14, the left side of the frame 1 is threadedly connected to the storage tube 17, the storage tube 17 is slidably connected to the placement rack 18, and the mounting plate frame 16 is rotatably connected to the electric rotary blade 19.

[0033] like Figure 1 and Figure 2As shown, the pushing assembly includes a top frame 102, a first air cylinder 103, an air guide tube 104, a mobile frame 105, a pulling rotating frame 12 and a second air cylinder 13. The top frame 102 is slidably connected to the right side of the frame 1, the first air cylinder 103 is fixedly connected to the left side of the frame 1, the piston rod of the first air cylinder 103 is fixedly connected to the top frame 102, the second air cylinder 13 is fixedly connected to the top of the left side of the frame 1, the air guide tube 104 is fixedly connected and communicated between the second air cylinder 13 and the first air cylinder 103, the mobile frame 105 is slidably connected to the middle part of the frame 1, the piston rod of the second air cylinder 13 is fixedly connected to the mobile frame 105, the lower part of the frame 1 is rotatably connected to the pulling rotating frame 12, and the pulling rotating frame 12 is movably connected to the mobile frame 105.

[0034] like Figure 2 and Figure 3 As shown, the left side of the top frame 102 is provided with ventilation slots which are evenly spaced around the circumference, and the right side of the top frame 102 is provided with ventilation holes which are evenly spaced around the circumference.

[0035] like Figure 2 As shown, a deflation valve is fixedly connected to the middle of the air guide pipe 104 .

[0036] like Figure 2 As shown, a one-way valve is fixedly connected to the top left side of the second gas cylinder 13.

[0037] When the small joint bearing on the arch trolley is damaged and needs to be replaced with a new one, the worker can first turn the flap 11 upward and open it, then put the bearing vertically into the right part of the frame 1 and make the bearing fit with the right side of the top frame 102, and then turn the flap 11 downward to reset and close it, then align the outlet on the right side of the frame 1 with the mounting hole and pull the rotating frame 12 to swing back and forth, and the swinging of the rotating frame 12 to the left and right will drive the piston rod of the moving frame 105 and the second air cylinder 13 to move back and forth, and the piston rod of the second air cylinder 13 moving to the left will make the second air cylinder 1 The gas in the first air cylinder 103 enters the first air cylinder 103 through the air guide pipe 104, and the piston rod of the first air cylinder 103 moves to the right for a distance, and the top frame 102 and the bearing also move to the right with the piston rod of the first air cylinder 103. The piston rod of the second air cylinder 13 moves to the right and inhales the external air through the one-way valve for replenishment. This cycle can make the piston rod of the first air cylinder 103, the top frame 102 and the bearing gradually move to the right until the bearing is pressed into the mounting hole. Since the bearing always fits with the right side of the top frame 102, the top frame 102 can apply uniform pressure to the bearing. During the installation, the electric vane 19 can be started, and since the placement rack 18 is provided with refrigeration materials such as dry ice, the rotation of the electric vane 19 will cause the cold air in the storage cylinder 17 to circulate in the mounting plate rack 16, the guide pipe 1401, the cavity block 15 and the return pipe 14, and the circulating cold air can also keep the inside of the rack 1 at a low temperature and cool the placed bearings. The bearings will then gradually cool down and shrink slightly, so that the bearings can more easily enter the mounting holes of the arch trolley, thereby avoiding the bearings. When the bearing is installed, it will rub against the hole wall and wear will occur. After the bearing is installed, the electric rotary vane 19 can be closed and the air release valve on the air guide pipe 104 can be opened. Then, the piston rod of the first air cylinder 103 and the top frame 102 can be moved to the left and reset. At this time, the gas in the first air cylinder 103 will be discharged outward from the air release valve on the air guide pipe 104. If the dry ice or other refrigeration materials on the placement rack 18 are used up, the storage cylinder 17 can be unscrewed from the frame 1 and the placement rack 18 can be pulled out upward. After the refrigeration material is replenished, the placement rack 18 and the storage cylinder 17 can be installed back to their original positions.

[0038] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 6 As shown, a heating mechanism is also included, which is arranged on the frame 1. The heating mechanism includes a contact frame 2, a battery 21 and a heating wire 22. The battery 21 is fixedly connected to the right side of the frame 1, and the battery 21 has a switch. The contact frame 2 is fixedly connected between the battery 21 and the frame 1, and the heating wire 22 is fixedly connected to the top of the battery 21. The heating wire 22 is located inside the contact frame 2.

[0039] When the worker aligns and fits the outlet on the right side of the frame 1 with the mounting hole, the contact frame 2 will also fit with the mounting hole of the arch frame trolley. Then the battery 21 can be started and the water in the contact frame 2 can be heated through the heating wire 22. The heated water will evenly heat the mounting hole of the arch frame trolley and slightly increase the inner diameter of the mounting hole, so that the bearing can enter the mounting hole more easily, thereby avoiding scratches and wear between the bearing and the hole wall. After the bearing is installed, the battery 21 can be turned off.

[0040] like Figure 7 and Figure 8 As shown, a cooling mechanism is also included, which is arranged on the frame 1. The cooling mechanism includes a rotating shaft 3, a fan blade 31, a spur gear assembly 32, a transmission belt 33 and a rack 34. The rotating shaft 3 is rotatably connected to the left side of the frame 1. The rotating shaft 3 is fixed with two fan blades 31 symmetrically distributed front and back, wherein the spur gear assembly 32 includes a large gear and a small gear, and the large gear is meshed with the small gear. The large gear and the small gear in the spur gear assembly 32 are both rotatably connected to the left side of the frame 1. Two transmission belts 33 symmetrically distributed front and back are sleeved between the small gear in the spur gear assembly 32 and the rotating shaft 3. A rack 34 is fixed to the bottom of the piston rod of the first air cylinder 103, and the rack 34 is meshed with the large gear in the spur gear assembly 32.

[0041] When the worker pulls the rotating frame 12 to drive the piston rod of the first air cylinder 103, the top frame 102 and the bearing to gradually move to the right, the rack 34 will also gradually move to the right along with the piston rod of the first air cylinder 103, and the rightward movement of the rack 34 will drive the large gear in the spur gear assembly 32 to rotate, and the rotation of the large gear will drive the small gear in the spur gear assembly 32 to rotate at high speed, and the high-speed rotation of the small gear will drive the rotating shaft 3 and the front and rear two fan blades 31 to rotate at high speed through the transmission belt 33 and inhale the outside air into the frame 1, and then make the gas entering the frame 1 pass through the ventilation slots and ventilation holes of the top frame 102 And discharged to the right, during which the flowing gas will first be cooled by the cavity block 15, and then flow to the right to cool the bearing, so that the air circulation inside the frame 1 can be accelerated, so that the cooled air can take away the heat of the bearing more quickly, thereby improving the cooling effect of this device on the bearing, so that the bearing can enter the mounting hole more easily, and avoid scratches and wear of the bearing. When the piston rod of the first air cylinder 103 and the top frame 102 move to the left to reset, the shaft 3 and the front and rear fan blades 31 will rotate in the opposite direction under the action of the rack 34 and the spur gear assembly 32 and other components.

[0042] like Figure 1 and Fig. 9As shown, it also includes a limiting mechanism, which is arranged on the frame 1. The limiting mechanism includes a limiting block 4, a rotating rod 41 and a torsion spring 42. The rotating rods 41 that are equidistantly distributed axially and circumferentially are all rotatably connected to the right part of the frame 1, and a torsion spring 42 is fixed between the rotating rod 41 and the frame 1. The right side of the flip cover 11 is rotatably connected to two rotating rods 41 that are symmetrically distributed front and back, and a torsion spring 42 is also fixed between the rotating rod 41 and the flip cover 11. The middle part of the rotating rod 41 is fixed to the limiting block 4.

[0043] When the worker vertically places the bearing into the right part of the frame 1 and makes the bearing fit with the right side of the top frame 102, with the cooperation of the top frame 102 and the leftmost limit block 4, the bearing can maintain a vertical state and will not tilt. When the top frame 102 drives the bearing to move to the right and squeezes the leftmost limit block 4, the leftmost limit block 4 and the rotating rod 41 immediately begin to rotate forward, and the torsion spring 42 immediately deforms. When the bearing moves to the right and separates from the leftmost limit block 4, the bearing will maintain a vertical state with the cooperation of the top frame 102 and the middle limit block 4. By analogy, the bearing can be limited by the top frame 102 and the limit block 4, so that the bearing maintains a vertical state and avoids it from tilting, thereby avoiding affecting the subsequent installation effect due to the tilt of the bearing. When the piston rod of the first air cylinder 103 and the top frame 102 move to the left to reset, the limit block 4 and the rotating rod 41 will rotate in the opposite direction and reset under the action of the torsion spring 42.

[0044] like Figure 1 and Fig.10 As shown, a fixing mechanism is also included, which is arranged on the contact frame 2. The fixing mechanism includes a suction cup 5, a sliding rod 51 and a tension spring 52. The sliding rods 51 distributed equidistantly around the circumference are all slidably connected to the middle part of the contact frame 2. The tension spring 52 is fixed between the sliding rod 51 and the contact frame 2, and the suction cup 5 is fixed to the right side of the sliding rod 51.

[0045] When the worker aligns the outlet on the right side of the frame 1 with the mounting hole and gradually makes them close to each other, the suction cup 5 will first contact the edge of the mounting hole of the arch frame trolley, and as the frame 1 and the contact frame 2 continue to move to the right and close to the mounting hole, the slide bar 51 and the suction cup 5 will slide relative to the contact frame 2 due to being blocked by the arch frame trolley, and the tension spring 52 will be stretched immediately. At this time, the suction cup 5 will be close to the edge of the mounting hole under the elastic force of the tension spring 52, so that the frame 1, the contact frame 2 and other components can be fixed in the appropriate position through the suction cup 5, avoiding deviation due to accidental shaking when the worker installs the bearing into the mounting hole, and affecting the subsequent installation of the bearing. When the bearing is installed, the worker can separate the suction cup 5 from the edge of the mounting hole. At this time, the slide bar 51 and the suction cup 5 will move to the right relative to the contact frame 2 under the action of the tension spring 52 to reset.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A spherical bearing loading device for arch trolley maintenance, comprising a frame (1), a flap (11), a protective shell (101) and a pushing assembly, wherein the frame (1) is rotatably connected to the flap (11), the frame (1) is fixedly connected to the protective shell (101), and the frame (1) is provided with a pushing assembly, wherein: The invention also comprises a return pipe (14), a guide pipe (1401), a cavity block (15), a mounting plate frame (16), a storage tube (17), a placement frame (18) and an electric rotary blade (19). The cavity block (15) is fixedly connected inside the frame (1), the mounting plate frame (16) is fixedly connected inside the frame (1), the guide pipe (1401) is fixedly connected and communicated between the mounting plate frame (16) and the cavity block (15), the return pipe (14) is fixedly connected and communicated between the mounting plate frame (16) and the cavity block (15), the storage tube (17) is threadedly connected inside the frame (1), the placement frame (18) is slidably connected inside the storage tube (17), and the electric rotary blade (19) is rotatably connected inside the mounting plate frame (16).

2. A spherical bearing installation device for arch trolley maintenance according to claim 1, characterized in that: The pushing assembly comprises a top frame (102), a first air cylinder (103), an air guide tube (104), a movable frame (105), a pulling rotating frame (12) and a second air cylinder (13); the top frame (102) is slidably connected inside the frame (1); the first air cylinder (103) is fixedly connected inside the frame (1); a piston rod of the first air cylinder (103) is fixedly connected to the top frame (102); the second air cylinder (13) is fixedly connected to and communicated with the first air cylinder (103); the movable frame (105) is slidably connected to the frame (11); the piston rod of the second air cylinder (13) is fixedly connected to the movable frame (105); the frame (1) is rotatably connected to the pulling rotating frame (12); and the pulling rotating frame (12) is movably connected to the movable frame (105).

3. A spherical bearing installation device for arch trolley maintenance according to claim 2, characterized in that: One side of the top frame (102) is provided with ventilation slots that are evenly spaced around the circumference, and the other side of the top frame (102) is provided with ventilation holes that are evenly spaced around the circumference.

4. A spherical bearing installation device for arch trolley maintenance according to claim 3, characterized in that: The airway (104) A bleed valve is fixedly connected.

5. A spherical bearing installation device for arch trolley maintenance according to claim 4, characterized in that: The second gas cylinder (13) is fixedly connected with a one-way valve.

6. A spherical bearing installation device for arch trolley maintenance according to claim 5, characterized in that: The device also comprises a heating mechanism, which is arranged on the frame (1), and comprises a contact frame (2), a battery (21) and a heating wire (22); the battery (21) is fixedly connected to the frame (1), the contact frame (2) is fixedly connected between the battery (21) and the frame (1), the battery (21) is fixedly connected to the heating wire (22), and the heating wire (22) is located inside the contact frame (2).

7. A spherical bearing installation device for arch trolley maintenance according to claim 6, characterized in that: The invention also comprises a cooling mechanism, which is arranged on the frame (1), and comprises a rotating shaft (3), fan blades (31), a spur gear assembly (32), a transmission belt (33) and a rack (34). The rotating shaft (3) is rotatably connected to the inside of the frame (1), and the fan blades (31) are fixedly connected to the rotating shaft (3) and are symmetrically distributed in the front and rear directions. The spur gear assembly (32) comprises a large gear and a small gear, and the large gear meshes with the small gear. The large gear and the small gear in the spur gear assembly (32) are both rotatably connected to the inside of the frame (1), and a transmission belt (33) symmetrically distributed in the front and rear directions is sleeved between the small gear in the spur gear assembly (32) and the rotating shaft (3). The piston rod of the first air cylinder (103) is fixedly connected to the rack (34), and the rack (34) meshes with the large gear in the spur gear assembly (32).

8. A spherical bearing installation device for arch trolley maintenance according to claim 7, characterized in that: The invention also comprises a limiting mechanism, which is arranged on the frame (1), and comprises a limiting block (4), a rotating rod (41) and a torsion spring (42). The rotating rods (41) are equidistantly distributed along the axial circumference and are all rotatably connected to the frame (1). A torsion spring (42) is fixedly connected between the rotating rods (41) and the frame (1). The flip cover (11) is rotatably connected to the rotating rods (41) symmetrically distributed front and back. A torsion spring (42) is also fixedly connected between the rotating rods (41) and the flip cover (11). The rotating rod (41) is fixedly connected to the limiting block (4).

9. A spherical bearing installation device for arch trolley maintenance according to claim 8, characterized in that: The device also includes a fixing mechanism, which is arranged on the contact frame (2). The fixing mechanism includes a suction cup (5), a sliding rod (51) and a tension spring (52). The sliding rods (51) are equidistantly distributed around the circumference and are all slidably connected to the contact frame (2). The tension spring (52) is fixedly connected between the sliding rod (51) and the contact frame (2). The sliding rod (51) is fixedly connected to the suction cup (5).

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