Track machine driven device assembling workbench

Abstract

The utility model relates to a track machine driven device assembling workbench which comprises a supporting frame, a fixing platform located on the upper portion of the supporting frame, a positioning assembly located in the middle of the fixing platform, a bearing heater, a liquid nitrogen storage tank and an oiling mechanism. The bearing heater and the liquid nitrogen storage tank are located on one side of the positioning assembly in the Y direction, and the oiling mechanism is located on the other side of the positioning assembly in the Y direction. The Y direction is in the horizontal plane. According to the workbench, the bearings can be installed between the shaft rod and the wheels according to the principle of thermal expansion and cold contraction, lubricating oil is added, and rapid assembly of the track machine driven device is achieved.

Description

Technical Field

[0001] This utility model relates to the field of workshop equipment technology, and in particular to an assembly workbench for a track machine driven device. Background Technology

[0002] A rail-mounted crane is a lifting device that runs on a track. Rail-mounted cranes are widely used in industrial plants, warehouses, ports, railway freight yards, and other locations for loading, unloading, and transporting goods. They can move along pre-laid tracks to lift and transport heavy objects.

[0003] The track machine driven mechanism is an auxiliary structure on the track machine used to guide the track machine along the rails. It has wheels to prevent it from detaching from the guide rails. These wheels need to be assembled onto the axles on both sides of the main body via bearings. The bearings have inner and outer rings with oblique fits, which must be interference-fitted with the axles and wheels respectively, often requiring manual assembly by workers.

[0004] Therefore, it is necessary to design a dedicated assembly workbench to complete the assembly. Summary of the Invention

[0005] The main purpose of this utility model is to provide a workbench for assembling a track machine driven device, which can install bearings between the shaft and the wheel and add lubricating oil to achieve quick assembly of the track machine driven device.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a track machine driven device assembly workbench, including a support frame, a fixed platform located on the upper part of the support frame, a positioning component located in the middle of the fixed platform, a bearing heater and a liquid nitrogen storage tank located on one side of the positioning component in the Y direction, and a refueling mechanism located on the other side of the positioning component in the Y direction, wherein the Y direction is located in the horizontal plane.

[0007] Specifically, the positioning component includes a horizontal positioning platform and two V-shaped blocks respectively disposed on both sides of the horizontal positioning platform in the X direction. The horizontal positioning platform is provided with a pair of reference blocks arranged side by side in the X direction and a threaded fastener for locking the track machine driven device on the horizontal positioning platform. The X direction is located in the horizontal plane and is perpendicular to the Y direction.

[0008] Specifically, a first storage platform is provided on one side of the support frame in the Y direction. The first storage platform is located below the fixed platform and stores the liquid nitrogen storage tank. The fixed platform is provided with a handhole corresponding to the liquid nitrogen storage tank.

[0009] Furthermore, a second storage platform is provided on the other side of the support frame in the Y direction. The second storage platform is located below the fixed platform. The refueling mechanism includes a lubricating oil tank, a refueling gun, and an oil pipe connecting the lubricating oil tank and the refueling gun. The lubricating oil tank is placed on the second storage platform, and the fixed platform is provided with a through hole for the oil pipe to pass through.

[0010] Specifically, the support frame has four casters at its bottom four corners.

[0011] The beneficial effects of this utility model's technical solution are:

[0012] This assembly workbench is used to attach components such as wheels, bearings, and nuts to the end of the axle. The same end of the axle has two bearings, each with an inner ring and an outer ring. The inner ring is interference-fitted with the axle, and the outer ring is interference-fitted with the inner side of the wheel 202. To achieve the interference fit between the inner ring and the axle, the inner ring needs to be heated in a bearing heater. Due to thermal expansion, the inner diameter of the inner ring will slightly increase, allowing it to fit onto the axle. After cooling, the two are fixed in place. To achieve the interference fit between the outer ring and the inner side of the wheel, the outer ring needs to be placed in a liquid nitrogen tank. The low temperature of the liquid nitrogen will cause the outer ring to shrink, slightly reducing its outer diameter, allowing it to fit inside the wheel. There is an angle between the inner and outer rings, with opposite angles. The outer ring of the inner bearing exerts an axial inward force on the inner ring, and the inner ring of the outer bearing also exerts an axial inward force on the outer ring. When the outer bearing is tightened with a nut on the outside, the wheel will not move axially. This workbench can utilize the principle of thermal expansion and contraction to install bearings between the shaft and the wheel, and add lubricating oil to achieve quick assembly of the track machine's driven device. Attached Figure Description

[0013] Figure 1 This is a perspective view of the assembly workbench of the track machine driven device in an embodiment.

[0014] Figure 2 A three-dimensional view of the driven device of the track machine;

[0015] Figure 3 This is a partial sectional view of one end of the shaft after assembly.

[0016] Figure 4 This is a 3D view of the track machine driven device during the assembly process.

[0017] The numbers in the diagram represent:

[0018] 100 - Assembly workbench

[0019] 1-Supporting frame, 11-First storage platform, 12-Second storage platform, 13-Wheel casters

[0020] 2-Fixed platform, 21-Handhole, 22-Through hole

[0021] 3-Positioning component, 31-Horizontal positioning support, 311-Reference block, 312-Threaded fastener, 32-V-shaped support block.

[0022] 4-Bearing heater,

[0023] 5-Liquid nitrogen storage tank,

[0024] 6-Refueling mechanism, 61-Lubricating oil storage tank, 62-Refueling nozzle, 63-Oil pipe;

[0025] 200- Track machine driven device, 201- Main body, 2011- Shaft, 2012- Fixing hole, 202- Wheel, 203- Bearing, 2031- Inner ring, 2032- Outer ring, 204- Nut. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments.

[0027] Example:

[0028] like Figure 1 and Figure 4 As shown, the present invention provides a track machine driven device assembly workbench 1, including a support frame 1, a fixed platform 2 located on the upper part of the support frame 1, a positioning component 3 located in the middle of the fixed platform 2, a bearing heater 4 and a liquid nitrogen storage tank 5 located on one side of the positioning component 3 in the Y direction, and a refueling mechanism 6 located on the other side of the positioning component 3 in the Y direction. The Y direction is located in the horizontal plane.

[0029] The track machine driven device 200 includes a main body 201, two wheels 202, two pairs of bearings 203, and multiple nuts 204. The main body 201 has shafts 2011 at both ends and a fixing hole 2012 in the middle. This assembly workbench 1 is used to mount the wheels 202, bearings 203, nuts 204, and other components onto the ends of the shafts 2011. Each end of the shaft 2011 has two bearings 203, each bearing 203 having an inner ring 2031 and an outer ring 2032. The inner ring 2031 is interference-fitted with the shaft 2011, and the outer ring 2032 is interference-fitted with the inner side of the wheel 202. To achieve the interference fit between the inner ring 2031 and the shaft 2011, the inner ring 2031 needs to be heated in the bearing heater 4. Under thermal expansion, the inner diameter of the inner ring 2031 will slightly increase, allowing it to fit onto the shaft 2011. After cooling, the two are fixed in place. To achieve an interference fit between the outer ring 2032 and the inner side of the wheel 202, the outer ring 2032 needs to be placed in a liquid nitrogen tank 5. The low temperature of the liquid nitrogen will cause the outer ring 2032 to shrink, slightly reducing its outer diameter, thus allowing it to fit inside the wheel 202. There is an angle between the inner ring 2031 and the outer ring 2032, and the angles of the two bearings 203 are opposite. The outer ring of the inner bearing exerts an axial inward force on the inner ring, and the inner ring of the outer bearing also exerts an axial inward force on the outer ring. When the outer bearing is tightened with a nut 204 on its outer side, the wheel 202 will not move axially.

[0030] like Figures 1 to 4 As shown, the positioning component 3 includes a horizontal positioning platform 31 and two V-shaped blocks 32 respectively disposed on both sides of the horizontal positioning platform 31 in the X direction. The horizontal positioning platform 31 is provided with a pair of reference blocks 311 arranged side by side in the X direction and a threaded fastener 312 that locks the track machine driven device 200 onto the horizontal positioning platform 31. The X direction is located in the horizontal plane and is perpendicular to the Y direction.

[0031] The threaded fastener 312 includes a screw rod erected on the horizontal positioning bracket 31 and a nut screwed onto the screw rod. Before assembly, the main body 201 of the track machine driven device 200 is placed above the horizontal positioning bracket 31. The screw rod passes through the fixing hole 2012, while the sides of the main body 201 rest against two reference blocks 311 to prevent rotation. After tightening the nut, the main body 201 is fixed. The V-shaped support block 32 is used to support the weight of the wheel 202. During assembly, one hand can be freed up, allowing for better completion of fixing operations such as tightening screws.

[0032] like Figure 1 and Figure 4 As shown, a first storage platform 11 is provided on the Y-direction side of the support frame 1. The first storage platform 11 is located below the fixed platform 2. The first storage platform 11 stores the liquid nitrogen storage tank 5. The fixed platform 2 is provided with a handhole 21 corresponding to the liquid nitrogen storage tank 5.

[0033] Because liquid nitrogen is used for rapid cooling, reaching temperatures as low as -200°C, its use carries certain risks. If the liquid nitrogen storage tank 5 is accidentally knocked over, it could cause frostbite, so it should not be placed on the fixed platform 2. The first storage platform 11 provides a concealed storage space for the liquid nitrogen storage tank 5. When removing the outer ring 2032 from the liquid nitrogen storage tank 5, operators must wear protective gloves and pass the ring through the handhole 21 to avoid the risk of knocking over the tank.

[0034] like Figure 3 and Figure 4 As shown, a second storage platform 12 is provided on the other side of the support frame in the Y direction. The second storage platform is located below the fixed platform 2. The refueling mechanism 6 includes a lubricating oil tank 61, a refueling gun 62, and an oil pipe 63 connecting the lubricating oil tank 61 and the refueling gun 62. The lubricating oil tank 61 is placed on the second storage platform 12. The fixed platform 2 is provided with a through hole 22 through which the oil supply pipe 63 passes.

[0035] During the assembly of bearing 203, lubricating oil is required for lubrication. The lubricating oil is stored in a lubricating oil tank 61 and added to bearing 203 using a refill nozzle 62. If the lubricating oil tank 61 is knocked over, the lubricating oil may spill, causing a slippery hazard. The second storage platform 12 provides a concealed storage space for the lubricating oil tank 61. Operators only need to operate the refill nozzle 62 to add lubricating oil.

[0036] like Figure 4 As shown, the bottom four corners of the support frame 1 are provided with four casters 13.

[0037] The casters 13 allow the entire assembly workbench 100 to move on a flat surface, thus enabling it to be placed in a suitable position for assembly.

[0038] The usage procedure for this assembly workbench 1 is as follows:

[0039] Align the fixing hole 2012 with the threaded fastener 312, and place the main body 201 from top to bottom onto the horizontal positioning bracket 31. One side of the main body 201 is limited by two reference blocks 311. Then, screw the nut onto the threaded fastener to completely fix the main body 201 onto the horizontal positioning bracket 31. The outer rings 2032 of the two bearings 203 are cooled in the liquid nitrogen tank 5 and then assembled into the inside of the wheel 202. The inner rings 2031 of the two bearings 203 are heated on the bearing heater 4. The first inner ring is first installed onto the shaft 2011 and then lubricated. The wheel 202 rests on the V-shaped support block 32 and is then assembled onto the outside of the first inner ring, with the inner outer ring tightly against the first inner ring. Then, lubricating oil is added to the outer ring. The second inner ring is assembled to the outside of the shaft 2011, so that it is tightly attached to the second outer ring. Then, two nuts 204 are screwed on the outside of the shaft 2011 to press the second inner ring axially. Finally, the cover plate on the outside of the wheel 202 is sealed to complete the assembly.

[0040] This assembly workbench 1 can utilize the principle of thermal expansion and contraction to install the bearing 202 between the shaft 2011 and the wheel 203, and add lubricating oil to achieve quick assembly of the track machine driven device 200.

[0041] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A workbench for assembling a track machine driven device, characterized in that: It includes a support frame, a fixed platform located on the upper part of the support frame, a positioning component located in the middle of the fixed platform, a bearing heater and a liquid nitrogen storage tank located on one side of the positioning component in the Y direction, and a refueling mechanism located on the other side of the positioning component in the Y direction, wherein the Y direction is located in the horizontal plane.

2. The assembly workbench for the track machine driven device according to claim 1, characterized in that: The positioning component includes a horizontal positioning platform and two V-shaped blocks respectively disposed on both sides of the horizontal positioning platform in the X direction. The horizontal positioning platform is provided with a pair of reference blocks arranged side by side in the X direction and a threaded fastener for locking the track machine driven device on the horizontal positioning platform. The X direction is located in the horizontal plane and is perpendicular to the Y direction.

3. The assembly workbench for the track machine driven device according to claim 1, characterized in that: A first storage platform is provided on one side of the support frame in the Y direction. The first storage platform is located below the fixed platform and stores the liquid nitrogen storage tank. The fixed platform is provided with a handhole corresponding to the liquid nitrogen storage tank.

4. The assembly workbench for the track machine driven device according to claim 3, characterized in that: A second storage platform is provided on the other side of the support frame in the Y direction. The second storage platform is located below the fixed platform. The refueling mechanism includes a lubricating oil tank, a refueling gun, and an oil pipe connecting the lubricating oil tank and the refueling gun. The lubricating oil tank is placed on the second storage platform. The fixed platform is provided with a through hole for the oil pipe to pass through.

5. The assembly workbench for the track machine driven device according to claim 1, characterized in that: The support frame is equipped with four casters at the four corners of its bottom.

Images