Pulling tool for pulling out GEB25 electric wheel rotor brake hub

Abstract

The utility model discloses a puller for pulling out a GEB25 electric wheel rotor brake hub, which relates to the technical field of brake hub disassembly, and comprises a brake hub, a rotor bearing and a fixed hub arranged on the upper surface of the brake hub, the two pull rods are arranged above the fixed hub, the upper sides and the lower sides of the two pull rods are movably connected with the connecting discs in a sleeved mode, the brake hub is pulled out of the rotor bearing under the pulling force effect of the jack, and due to the overall structure, the brake hub can be separated from the rotor bearing more easily; the design principle of disassembling and maintaining the brake hub of the electric wheel rotor is universally applicable, is not limited to rotors of specific models and has high universality, only one workday is needed for disassembling and maintaining the electric wheel rotor by applying the puller, and compared with a traditional method or without a special puller, the efficiency is greatly improved, and the overhaul or maintenance time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of brake hub disassembly technology, and in particular to a puller for removing the brake hub of a GEB25 electric wheel rotor. Background Technology

[0002] The electric wheel rotor brake hub is a crucial component of the electric wheels in mining dump trucks, playing a key role in the truck's braking performance and safe operation. In actual operation of mining dump trucks, the electric wheel rotor brake hub typically needs to work in conjunction with the following components:

[0003] 1. Rotor Shaft: The brake hub is mounted on the rotor shaft end by an interference fit. The rotor shaft is a key component for transmitting power and supporting the brake hub. Its strength and precision directly affect the installation and working stability of the brake hub.

[0004] 2. Brake Disc: The brake disc works in conjunction with the brake drum. During braking, the brake pads rub against the brake disc to generate braking force, thereby slowing down or stopping the vehicle. The material and surface quality of the brake disc have a significant impact on braking performance.

[0005] 3. Fan mounting hub: The fan mounting hub plays a role in fixing the fan and connecting other components in the electric wheel. During the disassembly of the brake hub, it also provides a base for the installation and positioning of the puller.

[0006] Currently, manufacturers employ various methods to remove the brake drums when maintaining or repairing the electric wheels of mining dump trucks. Some manufacturers, when encountering situations requiring bearing replacement, rely on manual prying or hammering with simple tools to loosen and detach the brake drum. Others attempt to use general-purpose pull tools, but because these tools are not specifically designed for the characteristics of the electric wheel rotor brake drum, they often fail to achieve the desired results in practice.

[0007] However, the above methods still have the following problems. In terms of disassembly efficiency, manual prying or hammering is extremely inefficient, not only consuming a lot of manpower and time, but also easily damaging the brake drum and other related components. When using general-purpose pulling tools, due to the inability to adapt well to the interference fit between the brake drum and the rotor shaft and the structural characteristics of the electric wheel, it is often impossible to provide sufficient pulling force, or the pulling tool may become loose or slip during the pulling process, resulting in frequent interruptions in the disassembly process and seriously affecting the disassembly efficiency. In addition, in terms of operational safety, these methods are difficult to effectively control the sudden popping of the brake drum during the disassembly process, posing a significant safety hazard and easily causing injury to equipment and maintenance personnel. In response to this problem, this application proposes a pulling tool specifically for pulling out the brake drum of the GEB25 electric wheel rotor. This pulling tool can effectively improve the disassembly efficiency of the brake drum, ensure operational safety, and has a simple and practical structure. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a puller for removing the brake hub of the GEB25 electric wheel rotor, which solves the problem that manual prying or hammering is extremely inefficient, not only consuming a lot of manpower and time, but also easily damaging the brake hub and other related components.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A puller for removing the rotor brake hub of a GEB25 electric wheel includes a brake hub and a rotor bearing. The puller further includes: a fixed hub on the upper surface of the brake hub; two pull rods above the fixed hub; connecting discs movably sleeved on the upper and lower sides of the two pull rods; the lower connecting disc movably sleeved with the fixed hub; the brake hub and rotor bearing being fixedly sleeved; a set of bolts movably sleeved on the surface of the lower connecting disc; a locating pin hole on the upper surface of the brake hub; and two circular grooves on the opposite sides of the two connecting discs, with protective shells movably sleeved within each pair of circular grooves.

[0011] Preferably, each of the two pairs of circular grooves has a through hole, and each of the two pull rods has a fixing rod fixedly connected to its opposite side, with a nut threaded onto the annular side of each fixing rod.

[0012] Preferably, the two pairs of fixed rods are respectively movably sleeved with the two pairs of round holes, and a set of connecting holes are opened on the upper surface of the brake hub, and the set of connecting holes are respectively movably sleeved with a set of bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The brake hub is rapidly heated using an oxy-acetylene torch. Utilizing the principle of thermal expansion and contraction, the brake hub expands due to heat, increasing its inner diameter. This reduces the interference fit with the rotor bearing. Under the pulling force of a jack, the brake hub is pulled out of the rotor bearing. The overall structure makes it easier for the brake hub to detach from the rotor bearing. When the rotor model is updated, the design principle of disassembling and maintaining the electric wheel rotor brake hub is universally applicable and not limited to a specific rotor model, exhibiting strong versatility. Using this puller, disassembling and maintaining the electric wheel rotor only requires one working day. Compared to traditional methods or when there is no special puller, efficiency is greatly improved, and inspection or maintenance time is significantly shortened.

[0015] 2. Due to the use of the puller and the reasonable operating procedures, the process of pulling out the brake drum is more convenient and efficient, reducing the difficulty and complexity of manual operation, thereby reducing the labor intensity of maintenance personnel. The structure is simple and reasonable, easy to understand and operate, and does not require complex equipment or technical support. At the same time, maintenance is convenient, and if problems occur during use, they are easy to inspect and repair. The cost is low, and there is no need to purchase expensive special equipment to pull out the brake drum. Moreover, the practical effect is significant, which can effectively solve the problem of pulling out the brake drum of the GEB25 electric wheel rotor, ensuring the normal maintenance and repair of the electric wheel, indirectly improving the operating efficiency and reliability of mining dump trucks, and reducing production losses caused by equipment failure. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is an overall structural diagram of the present invention;

[0018] Figure 2 This is a structural diagram of the brake hub of this utility model;

[0019] Figure 3 This is a structural diagram of the rotor bearing of this utility model;

[0020] Figure 4 This is a structural diagram of the tie rod of this utility model.

[0021] Legend: 1. Brake hub; 2. Rotor bearing; 3. Fixed hub; 5. Tie rod; 6. Connecting disc; 7. Connecting hole; 8. Locating pin hole; 9. Protective shell; 10. Circular groove; 11. Circular hole; 12. Fixing rod; 13. Nut; 14. Bolt. Detailed Implementation

[0022] This application provides a puller for removing the brake hub of the GEB25 electric wheel rotor, effectively solving the problem of the extremely low efficiency of manual prying or hammering, which not only consumes a lot of manpower and time, but also easily damages the brake hub and other related components. Through its unique structural design, the puller can be used in conjunction with jacks, oil pumps, etc., to heat the front fixed surface of the brake hub at high temperature, causing the brake hub to expand due to heat and increase its inner diameter. This allows the brake hub to be pulled out quickly and stably from the rotor shaft end, greatly improving the disassembly efficiency of the brake hub and effectively avoiding safety hazards such as the brake hub suddenly popping out. Example

[0023] The technical solution in this application effectively solves the problem that manual prying or hammering is extremely inefficient, not only consuming a lot of manpower and time, but also easily damaging the brake drum and other related components. The overall idea is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a puller for removing the rotor brake hub of a GEB25 electric wheel, including a brake hub 1 and a rotor bearing 2. The puller further includes: a fixed hub 3 on the upper surface of the brake hub 1; two pull rods 5 above the fixed hub 3; connecting discs 6 movably sleeved on both the upper and lower sides of the two pull rods 5; the lower connecting disc 6 movably sleeved with the fixed hub 3; the brake hub 1 and the rotor bearing 2 fixedly sleeved; a set of bolts 14 movably sleeved on the surface of the lower connecting disc 6; a positioning pin hole 8 on the upper surface of the brake hub 1; two circular grooves 10 on the back sides of each of the two connecting discs 6; and protective shells 9 movably sleeved within each pair of circular grooves 10. The bearing 2 is placed horizontally and fixedly to ensure a stable and safe operating environment, providing a foundation for subsequent steps. The brake disc and accessories on the brake drum 1 are removed, making the brake drum 1 independent and reducing interference factors when pulling out the brake drum 1. A puller consisting of two pull rods 5 and two connecting discs 6 is connected to the brake drum 1. The lower end of the puller is fitted onto the end face of the fixed drum 3 and connected and fixed with a set of bolts 14. At the same time, the puller is fixed to the fixed drum 3 through the positioning pin hole 8 to ensure that the puller and the brake drum 1 are firmly connected. The jack is fixed and the puller and jack are fixed with the small pressure of the oil pump, so that the puller, jack and brake drum 1 form a relatively stable whole structure. Safety measures are taken, such as fixing the puller and jack together with steel wire rope to prevent the brake drum 1 from suddenly jumping out and endangering the equipment and maintenance personnel.

[0025] Both pairs of circular grooves 10 have through holes 11. The two pull rods 5 are fixedly connected to the back of each other with a fixing rod 12. Each fixing rod 12 has a nut 13 threaded onto its annular side. The two pull rods 5 and the two connecting discs 6 are detachable, which improves the overall flexibility. The fixing hub 3 is heated quickly with an oxy-acetylene torch. Utilizing the principle of thermal expansion and contraction, the brake hub 1 expands due to heat, increasing its inner diameter, thereby reducing the interference fit with the rotor bearing 2. Under the pulling force of the jack, the brake hub 1 is pulled out from the rotor bearing 2. The overall structure makes it easier for the brake hub 1 to detach from the rotor bearing 2. When the rotor model is updated, the design principle of disassembling and maintaining the electric wheel rotor brake hub 1 is universally applicable and not limited to a specific model of rotor. It has strong versatility. Using this puller, the disassembly and maintenance of the electric wheel rotor only takes one working day. Compared with traditional methods or when there is no special puller, the efficiency is greatly improved, and the inspection or maintenance time is significantly shortened.

[0026] Two pairs of fixing rods 12 are respectively movably connected to two pairs of round holes 11. A set of connecting holes 7 are opened on the upper surface of the brake hub 1. A set of connecting holes 7 are respectively movably connected to a set of bolts 14. The puller is firmly connected to the fixed hub 3 through a set of bolts 14 and positioning pin holes 8. The jack is connected to the puller. When the jack extends under the pressure of the oil pump, it will generate an outward pulling force. This pulling force is transmitted to the brake hub 1 through the puller. Combined with the tendency of the brake hub 1 to separate due to the increase in the inner diameter after thermal expansion, the purpose of pulling the brake hub 1 out of the rotor bearing 2 is achieved. Due to the use of the puller and reasonable operating procedures, the process of pulling out the brake hub 1 is smooth. It is more convenient and efficient, reducing the difficulty and complexity of manual operation, thereby reducing the labor intensity of maintenance personnel. The structure is simple and reasonable, easy to understand and operate, and does not require complex equipment or technical support. At the same time, it is easy to maintain. If problems occur during use, it is easy to inspect and repair. The cost is low, and there is no need to purchase expensive special equipment to pull out the brake hub 1. Moreover, the practical effect is significant. It can effectively solve the problem of pulling out the brake hub 1 of the GEB25 electric wheel rotor, ensuring the normal maintenance and repair of the electric wheel, indirectly improving the operating efficiency and reliability of mining dump trucks, and reducing production losses caused by equipment failure.

[0027] Working principle:

[0028] The rotor bearing 2 is horizontally fixed to ensure a stable and safe operating environment, providing a foundation for subsequent steps. The brake disc and accessories on the brake drum 1 are removed, making the brake drum 1 independent and reducing interference factors when pulling it out. A puller consisting of two pull rods 5 and two connecting discs 6 is connected to the brake drum 1. The lower end of the puller is fitted onto the end face of the fixed drum 3 and fixed with a set of bolts 14. Simultaneously, the puller is fixed to the fixed drum 3 through the locating pin holes 8, ensuring a firm connection between the puller and the brake drum 1. A jack is then fixed, and the puller and jack are secured using the low pressure of an oil pump, forming a relatively stable integrated structure with the puller, jack, and brake drum 1. An installation method is then employed. Comprehensive measures are implemented, such as securing the puller and jack together with steel wire ropes to prevent the brake drum 1 from suddenly popping out and endangering the equipment and maintenance personnel. The two pull rods 5 and two connecting discs 6 are detachable, improving overall flexibility. The brake drum 1 is rapidly heated and fixed using an oxy-acetylene torch, utilizing the principle of thermal expansion and contraction to increase its inner diameter, thereby reducing the interference fit with the rotor bearing 2. Under the pulling force of the jack, the brake drum 1 is pulled out from the rotor bearing 2. The overall structure makes it easier for the brake drum 1 to detach from the rotor bearing 2. When the rotor model is updated, the design principle of disassembling and maintaining the electric wheel rotor brake drum 1 is generally applicable and not limited to a specific type. The rotor of this type has strong versatility. Using this puller, the disassembly and maintenance of the electric wheel rotor only requires one working day. Compared with traditional methods or when there is no special puller, the efficiency is greatly improved, and the inspection or maintenance time is significantly shortened. The puller is firmly connected to the fixed hub 3 by a set of bolts 14 and locating pin holes 8. The jack is connected to the puller. When the jack extends under the pressure of the oil pump, it generates an outward pulling force. This pulling force is transmitted to the brake hub 1 through the puller. Combined with the tendency of the brake hub 1 to separate due to the increase in the inner diameter caused by the thermal expansion, the purpose of pulling the brake hub 1 out of the rotor bearing 2 is achieved. Due to the use of the puller and reasonable operating procedures, The process of removing brake hub 1 is more convenient and efficient, reducing the difficulty and complexity of manual operation, thereby reducing the labor intensity of maintenance personnel. The structure is simple and reasonable, easy to understand and operate, and does not require complex equipment or technical support. At the same time, maintenance is convenient, and if problems occur during use, they are easy to inspect and repair. The cost is low, and there is no need to purchase expensive special equipment to remove brake hub 1. Moreover, the practical effect is significant, which can effectively solve the problem of removing brake hub 1 from the GEB25 electric wheel rotor, ensure the normal maintenance and repair of electric wheels, indirectly improve the operating efficiency and reliability of mining dump trucks, and reduce production losses caused by equipment failure.

[0029] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A puller for removing the rotor brake hub of a GEB25 electric wheel, comprising a brake hub (1) and a rotor bearing (2), characterized in that, The puller for pulling out the brake hub of the GEB25 electric wheel rotor further includes: a fixed hub (3) is provided on the upper surface of the brake hub (1), and two pull rods (5) are provided above the fixed hub (3), with connecting discs (6) movably sleeved on both the upper and lower sides of the two pull rods (5). Among them, the lower connecting disc (6) of the two connecting discs (6) is movably connected to the fixed hub (3), the brake hub (1) is fixedly connected to the rotor bearing (2), a set of bolts (14) is movably connected to the surface of the lower connecting disc (6) of the two connecting discs (6), and a positioning pin hole (8) is opened on the upper surface of the brake hub (1).

2. The puller for removing the rotor brake hub of a GEB25 electric wheel as described in claim 1, characterized in that: Two circular grooves (10) are opened on the back side of both connecting discs (6); Among them, protective shells (9) are movably sleeved in both pairs of circular grooves (10).

3. The puller for removing the rotor brake hub of a GEB25 electric wheel as described in claim 2, characterized in that: Both pairs of circular grooves (10) have circular holes (11) extending through them.

4. The puller for removing the rotor brake hub of a GEB25 electric wheel as described in claim 3, characterized in that: Both of the two pull rods (5) are fixedly connected to the back of each other by a fixing rod (12); Each of the fixed rods (12) has a nut (13) threaded onto its annular side.

5. A puller for removing the rotor brake hub of a GEB25 electric wheel as described in claim 4, characterized in that: The two pairs of fixed rods (12) are respectively movably connected to the two pairs of round holes (11).

6. The puller for removing the rotor brake hub of a GEB25 electric wheel as described in claim 1, characterized in that: A set of connecting holes (7) are provided on the upper surface of the brake hub (1); In this case, a set of connecting holes (7) are respectively movably connected to a set of bolts (14).

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