Bearing pulling front end device

Abstract

The utility model relates to a bearing pulling front end device which comprises a bearing fixing mechanism and a depth adjusting mechanism. Wherein the bearing fixing mechanism is used for fixing a bearing, a side wall through hole is formed in the inner side wall of the bearing fixing mechanism, and the side wall through hole is used for enabling a motor power supply wire in a bearing shaft rod to penetrate out of the side wall through hole; the depth adjusting mechanism is connected with the bearing fixing mechanism and the shaft pulling device and used for adjusting the shaft pulling distance between the bearing and the shaft pulling device so that the bearing can be pulled out through the shaft pulling device. The device not only can be suitable for pulling the bearing of a solid-core shaft, but also can be suitable for pulling the bearing of a hollow-core shaft through which a wire penetrates, so that the potential safety hazard of shaft pulling is eliminated.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical engineering technical field especially is related to bearing extraction front end device. BACKGROUND

[0002] With the rapid development of the automobile industry, bearings have a wide range of applications on various test equipment. The replacement of damaged bearings and technical improvements are key factors in improving test efficiency. Existing bearings can be divided into two categories according to the fixing method of the motor. The first category is a common motor driving a solid core shaft to rotate. The second category is a motor fixed on a hollow core shaft, and the motor power supply wire is passed out of the hollow core shaft. The traditional shaft extractor is suitable for the first category, but cannot be adapted to the second category of bearings. Safety hazards may occur during shaft extraction. SUMMARY

[0003] Therefore, it is necessary to provide a bearing extraction front end device that can adapt to a hollow core shaft wire passing bearing.

[0004] A bearing extraction front end device comprises:

[0005] A bearing fixing mechanism is used to fix the bearing. The inner side wall of the bearing fixing mechanism is provided with a side wall through hole. The side wall through hole is used to pass the motor power supply wire in the bearing shaft rod out of the side wall through hole.

[0006] A depth adjustment mechanism is connected with the bearing fixing mechanism and the shaft extractor. The depth adjustment mechanism is used to adjust the shaft extraction distance between the bearing and the shaft extractor, so that the bearing can be extracted by the shaft extractor.

[0007] In one embodiment, the bearing fixing mechanism further comprises:

[0008] A shaft rod fixing assembly is arranged at the first end of the bearing fixing mechanism. The inner side wall of the shaft rod fixing assembly is provided with a side wall through hole.

[0009] A first connecting part is arranged at the second end of the bearing fixing mechanism and connected with the depth adjustment mechanism.

[0010] In one embodiment, the shaft rod fixing assembly comprises:

[0011] A plurality of slot positions are arranged from outside to inside at the first end of the bearing fixing mechanism in sequence and are in communication with the side wall through hole. The diameters of the plurality of slot positions arranged from outside to inside decrease in sequence. Each slot position is adapted to a bearing of a certain size.

[0012] In one embodiment, the side wall through hole is arranged at the slot position with the smallest diameter, so that the power supply wire passes through the plurality of slot positions and is passed out of the side wall through hole.

[0013] In one embodiment, the depth adjustment mechanism comprises:

[0014] The first end of the puller connecting piece is connected with the first connecting part, and the second end of the puller connecting piece is connected with the puller.

[0015] In one embodiment, the depth adjustment mechanism comprises:

[0016] The first end of the depth adjustment assembly is detachably connected with the first connecting part, and the second end of the depth adjustment assembly is connected with the puller connecting piece, for adjusting the puller distance according to the required bearing depth.

[0017] In one embodiment, the depth adjustment assembly comprises:

[0018] At least one adjustment piece is used to match the bearing depth.

[0019] In one embodiment, the depth adjustment assembly comprises one adjustment piece, the first end of the adjustment piece is provided with a recess, and the recess is inlaid with the first connecting part; the second end of the adjustment piece is provided with a connecting part, and the connecting part is connected with the puller connecting piece.

[0020] In one embodiment, the depth adjustment assembly comprises a first adjustment piece and a second adjustment piece; the first end and the second end of the first adjustment piece are respectively provided with a first recess and a second connecting part, and the first end and the second end of the second adjustment piece are respectively provided with a second recess and a third connecting part; the first recess is inlaid with the first connecting part, the second connecting part is inlaid with the second recess, and the third connecting part is connected with the puller connecting piece.

[0021] In one embodiment, the bearing fixing mechanism is used to fix the bearing of the solid shaft or the bearing of the hollow shaft.

[0022] The bearing pulling front end device can be used for pulling the bearing of the solid shaft and the bearing of the hollow shaft, and eliminates the hidden danger of pulling the bearing. The power supply wire is pulled out from the side wall through hole and the bearing shaft is fixed, so that the wire is not damaged when the bearing of the hollow shaft is pulled out. The depth adjustment mechanism adjusts the puller distance in different scenes, so that the bearing is safely pulled out, and the hidden danger of shaft separation is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a sectional view of the bearing fixing mechanism of an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic view of the bearing fixing mechanism of an embodiment of the utility model;

[0025] Figure 3 It is a sectional view of the puller connecting piece in the depth adjustment mechanism of an embodiment of the utility model;

[0026] Figure 4 Figure 1 is a sectional view of a depth adjustment assembly in a depth adjustment mechanism of an embodiment of the present application.

[0027] Reference signs:

[0028] 20, bearing fixing mechanism; 21, side wall through hole; 22, shaft rod fixing assembly; 23, first connecting part; 31, shaft extractor connecting piece; 311, groove; 312, interface; 34, first adjusting piece; 341, first groove; 342, second connecting part; 35, second adjusting piece; 351, second groove; 352, third connecting part; a, first slot; b, second slot; c, third slot. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purpose, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to provide a sufficient understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the utility model, unless otherwise expressly provided and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise expressly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless otherwise expressly provided and limited, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and the like used in this paper are only for illustrative purposes and do not represent the only embodiment.

[0035] With the rapid development of the automobile industry, bearings are widely used in various test equipment. For damaged bearings, technical improvement is the key factor to improve test efficiency.

[0036] Before pulling the shaft, first need to do the preparatory work, ensure that the motor is completely powered off, to avoid accidental start injury; remove the shell: according to the structure of the motor, may need to remove part or all of the shell, in order to contact the bearing; before disassembly, mark the position and direction of the bearing, and special assembly details, in order to facilitate reassembly.

[0037] When removing the bearing, remove the screws, clamps or other fixtures that secure the motor and bearing; separate the motor from the shaft, if the motor is directly fixed to the shaft, it needs to be separated from the shaft first. This may involve removing the adhesive material or disassembling the special fixing structure; use the bearing puller to slowly and evenly apply force to the bearing with the puller jaw to pull the bearing out of the shaft; after the bearing is pulled out, check whether the shaft and bearing seat are worn or damaged, and repair or replace them if necessary. Avoid direct impact, do not use hard objects to directly knock the bearing, so as to avoid damaging the bearing or the shaft.

[0038] The existing bearing can be divided into two categories according to the fixing method of the motor:

[0039] The first type is a common motor driving a solid shaft to rotate, in this method, the bearing is installed at both ends of the solid shaft, the inner ring of the bearing is tightly fitted on the shaft, and the outer ring is fixed in the bearing seat of the motor end cover. The design and manufacture of solid shaft are relatively simple, and the installation and maintenance are also relatively convenient, which is suitable for most ordinary industrial and household appliance motors.

[0040] The second type is that the motor is fixed on a hollow shaft, and the power supply wire of the motor is led out from the hollow shaft. The hollow shaft is usually used for high-speed motors or space-limited occasions. The power supply wire is led out from the other end of the shaft through the hollow shaft inside the motor, which can avoid the entanglement or wear of the wire during high-speed rotation and reduce the interference of external lines. Bearings can be installed at both ends of the hollow shaft, or installed in the middle part of the shaft according to the design to support the rotating parts.

[0041] The traditional bearing puller is suitable for the first type of bearing and cannot be adapted to the second type of bearing, which is easy to damage the wire and shaft, and there are safety hazards such as shaft disengagement during the pulling process.

[0042] In an exemplary embodiment, please refer to Figure 1 , a bearing pulling front end device is provided, which includes a bearing fixing mechanism 20 and a depth adjusting mechanism. The bearing fixing mechanism 20 is used to fix the bearing, and the inner side wall of the bearing fixing mechanism 20 is provided with a side wall through hole 21, which is used to make the motor power supply wire in the bearing shaft pass through the side wall through hole. The depth adjusting mechanism is connected with the bearing fixing mechanism 20 and the bearing puller, which is used to adjust the bearing and the bearing puller distance, so as to pull out the bearing through the bearing puller.

[0043] Optionally, when the motor is fixed on the hollow shaft, the power supply wire is led out from the inside of the hollow shaft. During the process of pulling out the bearing, the wire needs to be safely pulled out from the inside of the bearing and the hollow shaft to facilitate the replacement of the bearing, and the outlet of the wire needs to be set to prevent the power supply wire from being damaged. Therefore, the bearing fixing mechanism 20 in the embodiment is used to fix the bearing, and the inner side wall of the bearing fixing mechanism 20 is provided with a side wall through hole 21 which respectively communicates the bearing fixing mechanism 20 and the outside, so that the wire can be safely led out therefrom. The shape and size of the side wall through hole 110 can be adjusted according to the need of pulling out the shaft. Exemplarily, the top of the side wall through hole 21 is hemispherical, the main body is a cylindrical channel, and the side of the channel is open to the outside.

[0044] Optionally, the depth adjustment mechanism, connected with the bearing fixing mechanism 20 and the shaft puller, can adjust the distance between the bearing and the shaft puller. Exemplarily, the depth adjustment mechanism adopts a single or multiple combination of telescopic members (such as telescopic rods) or supporting members (such as supporting rods). According to the actual needs and the depth of the bearing to be pulled out, the appropriate depth adjustment mechanism can be selected to facilitate the pulling out of the bearing by the shaft puller.

[0045] Exemplarily, the material selection of the bearing pulling front end device depends on various factors, including the use environment, the size and type of the bearing, the required pulling force, and the cost consideration, etc. Tool steel, alloy steel stainless steel, aluminum alloy and composite materials can be used. Among them, tool steel is a material commonly used to manufacture pulling devices, which has high hardness and wear resistance, and is suitable for frequently used or high strength working occasions; alloy steel has better mechanical properties than ordinary tool steel, such as higher strength and better corrosion resistance, and is suitable for heavy-duty bearings or bearings working in high load environment; composite materials combine the advantages of multiple materials, such as light weight, high strength and corrosion resistance, and are suitable for special environments or occasions requiring specific performance.

[0046] The above-mentioned bearing pulling front end device can not only adapt to the bearing pulling of solid shaft, but also be suitable for the bearing pulling of hollow shaft with wire, eliminating the safety hazard of pulling out the shaft. The side wall through hole 21 provided on the inner side wall of the bearing fixing mechanism 20 enables the power supply wire to be led out from the side wall through hole 21 and the shaft rod to be fixed, thereby avoiding damage to the wire when pulling out the bearing of the hollow shaft with wire; the depth adjustment mechanism adapts to the pulling distance in different scenarios, thereby safely pulling out the shaft and avoiding safety hazards such as shaft falling off.

[0047] In an exemplary embodiment, please refer to Figure 1 The bearing fixing mechanism 20 further comprises a shaft rod fixing assembly 22 and a first connecting part 23.

[0048] The shaft rod fixing assembly 22 is arranged at the first end of the bearing fixing mechanism 20, and the inner side wall of the shaft rod fixing assembly 22 is provided with a side wall through hole 21.

[0049] The first connecting part 23 is arranged at the second end of the bearing fixing mechanism 20 and is connected with the depth adjusting mechanism.

[0050] In the above embodiment, the shaft rod fixing assembly 22 is used to fix the shaft rod of the bearing to be pulled out, so as to prevent the shaft rod from being damaged during the pulling out of the bearing. The diameter of the fixing device for fixing the bearing rod during the pulling out of the bearing is an important step, because it directly affects the smoothness of the pulling out process and the safety of the bearing. The diameter of the fixing device should be slightly smaller than the diameter of the bearing rod, so as to firmly fix the bearing rod. In an example, the inner diameter of the fixing device is about 0.5 mm to 1 mm smaller than the diameter of the bearing rod. The diameter of the fixing device should not be too small, so as to avoid causing excessive local pressure on the bearing rod during the pulling out process, which may cause deformation or damage. The material and structural strength of the fixing device are also factors to be considered when selecting the diameter. If the device is soft or insufficient in strength, a device with a slightly larger diameter may be selected to provide sufficient support. The shaft rod fixing methods include but are not limited to fixing blocks and pressing plates, sleeves and screws, temporary welding, mechanical clamps, temporary adhesives, and clamping grooves. The power supply wire is arranged in the hollow shaft rod, and an outlet for the power supply wire needs to be provided when the shaft rod is fixed. Therefore, the inner side wall of the shaft rod fixing assembly 22 is provided with a side wall through hole 21 to guide the power supply wire out.

[0051] The second end of the bearing fixing mechanism 20 is provided with a first connecting part 23 connected with the depth adjusting mechanism. The connection methods include but are not limited to slot connection (such as T-shaped slot and T-shaped nut), threaded connection, pin connection, etc.

[0052] In the above embodiment, the shaft rod fixing assembly 22 is used to fix the shaft rod of the bearing to be pulled out, so as to prevent the shaft rod from being damaged during the pulling out of the bearing. The diameter of the fixing device for fixing the bearing rod during the pulling out of the bearing is an important step, because it directly affects the smoothness of the pulling out process and the safety of the bearing. The diameter of the fixing device should be slightly smaller than the diameter of the bearing rod, so as to firmly fix the bearing rod. In an example, the inner diameter of the fixing device is about 0.5 mm to 1 mm smaller than the diameter of the bearing rod. The diameter of the fixing device should not be too small, so as to avoid causing excessive local pressure on the bearing rod during the pulling out process, which may cause deformation or damage. The material and structural strength of the fixing device are also factors to be considered when selecting the diameter. If the device is soft or insufficient in strength, a device with a slightly larger diameter may be selected to provide sufficient support. The shaft rod fixing methods include but are not limited to fixing blocks and pressing plates, sleeves and screws, temporary welding, mechanical clamps, temporary adhesives, and clamping grooves. The power supply wire is arranged in the hollow shaft rod, and an outlet for the power supply wire needs to be provided when the shaft rod is fixed. Therefore, the inner side wall of the shaft rod fixing assembly 22 is provided with a side wall through hole 21 to guide the power supply wire out.

[0053] In an example, the shaft rod fixing assembly 22 includes a plurality of slots. The plurality of slots are arranged from outside to inside at the first end of the bearing fixing mechanism 20 and are in communication with the side wall through hole 21. The diameters of the plurality of slots arranged from outside to inside decrease in turn, and each slot is adapted to a size of bearing. Figure 1

[0054] In an example, the bearing shaft rod is fixed by the slot fixing method. Since the diameters of the shaft rods of various types of hollow shafts with wires are different, the shaft rod fixing assembly 22 is provided with a plurality of slots to meet different shaft pulling requirements, while still providing an outlet for the power supply wire. The plurality of slots are arranged from outside to inside at the first end of the bearing fixing mechanism 20 and are in communication with the side wall through hole 21. The diameters of the plurality of slots arranged from outside to inside decrease in turn, and each slot is adapted to a size of bearing, i.e. the slot with the smallest diameter is at the innermost side, and the slot with the largest diameter is at the outermost side.

[0055] ​In the above embodiment, the shaft rod fixing assembly 22 is adapted to various sizes of bearings through multiple slots, and the diameters of the slots correspond to the diameters of the shaft rods of the bearings, thereby stabilizing the shaft rods of the bearings during the pulling process and improving the versatility and safety of the bearing pulling front end device 100.

[0056] In an exemplary embodiment, referring to Figure 1 , the side wall through hole 21 is arranged at the slot with the smallest diameter, so that the power supply wire passes through the multiple slots and is drawn out through the side wall through hole 21.

[0057] Exemplarily, referring to Figure 1 and Figure 2 , the shaft rod fixing assembly 22 is provided with three slots from outside to inside, i.e., a first slot a, a second slot b, and a third slot c, which are adapted to bearings of models 6205Z, 6204Z, and 6203Z, respectively. The three bearings are suitable for medium load, high-speed rotation, and single-row design. The inner diameter of the 6203Z bearing is 17 mm, the inner diameter of the 6204Z bearing is 20 mm, and the inner diameter of the 6205Z bearing is 25 mm. Therefore, the corresponding shaft rods are sequentially increased in diameter, i.e., the slot a with the largest diameter corresponds to the 6205Z bearing, the slot b with the medium diameter corresponds to the 6204Z bearing, and the slot c with the smallest diameter corresponds to the 6203Z bearing. The side wall through hole 21 is arranged at the slot c with the smallest diameter, so that each slot is in communication with the outside. When the bearing is pulled out, the shaft rod of the bearing abuts against the corresponding slot, and the wire is drawn out through the side wall through hole 21, thereby achieving the effect of stable pulling and preventing accidents such as shaft disengagement.

[0058] In an exemplary embodiment, referring to Figure 3 , the depth adjustment mechanism includes a puller connecting piece 31.

[0059] The first end of the puller connecting piece 31 is connected to the first connecting part 23, and the second end of the puller connecting piece 31 is connected to the puller.

[0060] Exemplarily, when the pulling depth is shallow, the puller connecting piece 31 is directly connected to the bearing fixing mechanism 20 through the first connecting part 23, so that the pulling operation is performed by the puller without the need to extend the pulling distance.

[0061] The size of the puller connecting piece 31 is matched with the puller and the shaft rod fixing assembly 22. The first end of the puller connecting piece 31 is provided with a groove 311, and the second end of the puller connecting piece 31 is provided with an interface 312. During the pulling process, the puller claw grips the inner ring of the bearing, the front end of the puller abuts against the interface 312 of the puller connecting piece 31, the bearing is moved towards the puller end by the puller pressing, and the purpose of pulling out the bearing is achieved.

[0062] In an exemplary embodiment, referring to Figure 4 , the depth adjustment mechanism includes a depth adjustment assembly 32.

[0063] The first end of the depth adjustment assembly 32 is detachably connected with the first connecting part 23, and the second end of the depth adjustment assembly 32 is connected with the puller connecting part 31, for adjusting the puller distance according to the required bearing depth to be pulled out.

[0064] Exemplarily, when the puller depth is deep, an additional depth adjustment assembly 32 is required to be provided to meet the actual requirement. The first end of the depth adjustment assembly 32 and the second end of the depth adjustment assembly 32 can be detachably connected in a groove connection manner. The length of the depth adjustment assembly 32 can be adjusted according to the required bearing depth to be pulled out. The depth adjustment assembly 32 can be a single adjustment assembly or a combination of multiple adjustment assemblies to adapt to different bearings and improve the versatility of the bearing pulling front-end device 100.

[0065] In an exemplary embodiment, the depth adjustment assembly 32 comprises at least one adjustment part for matching the bearing depth.

[0066] Exemplarily, the depth adjustment assembly 32 can be a single adjustment part (such as a metal rod) or a combination of multiple adjustment parts (such as multiple detachable and interconnected metal rods), which can be different or completely identical to adapt to different bearings and improve the versatility of the bearing pulling front-end device 100.

[0067] In an exemplary embodiment, the depth adjustment assembly 32 comprises one adjustment part. The first end of the adjustment part is provided with a groove for inlaying with the first connecting part 23, and the second end of the adjustment part is provided with a connecting part for connecting with the puller connecting part 31.

[0068] Exemplarily, the depth adjustment assembly 32 is a single adjustment part. The first end of the adjustment part is provided with a groove, the first connecting part 23 is provided with a protrusion, and the second end of the adjustment part is provided with a connecting part for inlaying and connecting with the first connecting part 23 and the puller connecting part 31 in a groove connection manner.

[0069] In an exemplary embodiment, please refer to Figure 4 , the depth adjustment assembly 32 comprises a first adjustment part 34 and a second adjustment part 35.

[0070] The first end and the second end of the first adjustment part 34 are respectively provided with a first groove 341 and a second connecting part 342, and the first end and the second end of the second adjustment part 35 are respectively provided with a second groove 351 and a third connecting part 352. The first groove 341 is inlaid with the first connecting part 23, the second connecting part 342 is inlaid with the second groove 351, and the third connecting part 352 is connected with the puller connecting part 31.

[0071] Exemplarily, the depth adjusting assembly 32 is two adjusting pieces, a first adjusting piece 34 and a second adjusting piece 35. The first adjusting piece 34 and the second adjusting piece 35 can be completely identical or different from each other to meet different shaft pulling needs. The first adjusting piece 34 and the first connecting part 23 are connected to each other in a groove connection manner through a first groove 341 and a protrusion of the first connecting part 23. The first adjusting piece 34 and the second adjusting piece 35 are connected to each other in a groove connection manner through a second groove 351 and a protrusion of the second connecting part 342. The second adjusting piece 35 and the shaft puller connecting part 31 are also connected to each other in a groove connection manner.

[0072] In one exemplary embodiment, the bearing fixing mechanism 20 is used to fix the bearing of the solid core shaft or the bearing of the hollow core shaft passing through the wire.

[0073] Exemplarily, the bearing fixing mechanism 20 of the utility model can fix the bearing of the solid core shaft and the bearing of the hollow core shaft passing through the wire, so as to realize safe shaft pulling of the bearing of the solid core shaft or the bearing of the hollow core shaft passing through the wire and avoid damage of the shaft rod and the wire during shaft pulling. For the bearing of the conventional solid core shaft, the bearing rod to be pulled out is pressed against the bearing fixing mechanism 20 to complete the fixing of the bearing rod, and then the shaft puller is connected to complete the shaft pulling operation.

[0074] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0075] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A bearing puller nosepiece characterized by, The application relates to a bearing fixing mechanism for fixing a bearing, wherein an inner side wall of the bearing fixing mechanism is provided with a side wall through hole for a motor power supply wire in a bearing shaft to pass out of the side wall through hole. The application also relates to a depth adjusting mechanism connected with the bearing fixing mechanism and a shaft pulling device, which is used for adjusting the shaft pulling distance between the bearing and the shaft pulling device to pull out the bearing through the shaft pulling device. The bearing fixing mechanism further comprises:

2. The bearing puller nosepiece of claim 1 wherein, A shaft rod fixing assembly arranged at a first end of the bearing fixing mechanism, wherein an inner side wall of the shaft rod fixing assembly is provided with the side wall through hole. A first connecting part arranged at a second end of the bearing fixing mechanism and connected with the depth adjusting mechanism. The shaft rod fixing assembly comprises:

3. The bearing puller tip device of claim 2, wherein, A plurality of slot positions arranged from outside to inside at the first end of the bearing fixing mechanism and communicated with the side wall through hole; the diameters of the plurality of slot positions arranged from outside to inside are gradually reduced, and each slot position is adapted to a bearing of a certain size. The side wall through hole is arranged at the slot position with the smallest diameter to enable the power supply wire to pass through the plurality of slot positions and pass out of the side wall through hole.

4. The bearing puller tip device of claim 3, wherein, The depth adjusting mechanism comprises:

5. The bearing puller tip device of claim 2, wherein, A shaft pulling device connecting part, wherein a first end of the shaft pulling device connecting part is connected with the first connecting part, and a second end of the shaft pulling device connecting part is connected with the shaft pulling device. The depth adjusting mechanism comprises:

6. The bearing puller tip device of claim 5, wherein, A depth adjusting assembly, wherein a first end of the depth adjusting assembly is detachably connected with the first connecting part, and a second end of the depth adjusting assembly is connected with the shaft pulling device connecting part, which is used for adjusting the shaft pulling distance according to the required bearing depth to be pulled out. The depth adjusting assembly comprises:

7. The bearing puller tip device of claim 6, wherein, At least one adjusting part used for matching the bearing depth. The depth adjusting assembly comprises one adjusting part, wherein a first end of the adjusting part is provided with a recess and inlaid with the first connecting part; and a second end of the adjusting part is provided with a connecting part and connected with the shaft pulling device connecting part.

8. The bearing puller tip device of claim 7, wherein, The depth adjusting assembly comprises a first adjusting part and a second adjusting part; a first end and a second end of the first adjusting part are respectively provided with a first recess and a second connecting part; a first end and a second end of the second adjusting part are respectively provided with a second recess and a third connecting part; the first recess is inlaid with the first connecting part; the second connecting part is inlaid with the second recess; and the third connecting part is connected with the shaft pulling device connecting part.

9. The bearing puller tip device of claim 7, wherein, The bearing fixing mechanism is used for fixing a bearing of a solid core shaft or a bearing of a hollow core shaft.

10. The bearing puller tip device of claim 1, wherein, ​

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