Rolling bearing dismounting device

Abstract

The utility model provides a rolling bearing dismounting device, which relates to the technical field of bearing dismounting tools, and comprises an iron plate, a hook assembly, an internal thread cylinder, a screw rod and a bracket, two sliding rails are arranged on the surface of the iron plate, the hook assembly is movably connected with the iron plate through the sliding rails, and an internal thread cylinder is fixedly connected to the face, away from the hook assembly, of the iron plate and located in the middle of the iron plate. The technical problems that in the prior art, too many parts exist, the occupied area is large, and carrying is inconvenient during field work are solved, and the technical effects that the size is small, carrying is convenient, and the using requirement of constructors is low are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing dismounting tool technical field especially is related to a rolling bearing dismounting device. BACKGROUND

[0002] Rolling bearing is the very important part in modern machinery, is widely used in various mechanical equipment, such as car, machine tool, motor, aerospace equipment. Its function is the sliding friction between the shaft and bearing seat during operation is changed into rolling friction, thereby reducing friction loss. Rolling bearing often needs to be overhauled in actual application process, and many times overhauling work must be disassembled from mechanical rolling bearing.

[0003] The dismounting method for rolling bearing in prior art is knocking method or using dismounting device to dismount, and the knocking method as traditional way, although simple operation, directly through hammer and the like to knock the outer ring and the like of bearing and make it separate from the shaft. But this method is difficult to control the knocking force and direction, and is easy to cause damage to the inner ring of bearing, rolling body and the shaft matched therewith, especially when the bearing is in the position difficult to knock directly, the applicability of the method is poor.

[0004] And the existing patent (the publication date is October 12, 2016, the publication number is CN 106026570A, and the patent name is rolling bearing dismounting device) discloses a dismounting device, which can shorten the time used when dismounting the bearing, improve work efficiency, and effectively enhance the operation speed of bearing dismounting. However, the dismounting device has the problems of too many parts, large occupation range and inconvenient on-site work carrying. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a rolling bearing dismounting device to alleviate the technical problems of large occupation range and inconvenient on-site work carrying in the prior art.

[0006] The rolling bearing dismounting device provided by the utility model comprises an iron plate, a hook assembly, an internal thread cylinder, a screw rod and a support.

[0007] A sliding rail is formed in the surface of the iron plate, the hook assembly is movably connected to the iron plate through the sliding rail, the internal thread cylinder is fixed to the side of the iron plate away from the hook assembly, and the internal thread cylinder is located in the middle of the iron plate.

[0008] The screw rod penetrates the top end of the support and is threadedly connected to the internal thread cylinder.

[0009] Further, the sliding rail is two rectangular holes arranged in parallel on the surface of the iron plate along the horizontal direction.

[0010] Further, the hook assembly comprises a first hook body, a second hook body and a fastening bolt.

[0011] The first hook body and the second hook body are both provided with through holes on the surface of the vertical part, and the fastening bolt passes through the through holes and the sliding rails to connect the hook assembly with the iron plate.

[0012] Further, the center distance between the two sliding rails is the same as the difference between the longitudinal length of the vertical part of the first hook body and the second hook body.

[0013] Further, the bent part of the first hook body and the second hook body is arc-shaped and bent to both sides.

[0014] Further, the bracket is arranged above the iron plate in a trapezoidal shape, and a circular hole is formed in the center of the top end of the bracket, and the screw rod passes through the bracket through the circular hole.

[0015] Further, a rotating bearing is arranged at the top end of the circular hole, and the screw rod passes through the rotating bearing and the circular hole in sequence.

[0016] Further, the thickness of the iron plate is not less than 10 mm.

[0017] Further, the diameter of the through hole is the same as the radial length of the sliding rail.

[0018] Further, one end of the screw rod is a hexagonal fixed end, and the other end of the screw rod is a pointed end.

[0019] Beneficial effects:

[0020] The utility model provides a kind of rolling bearing dismounting device, including the surface of iron plate is provided with two sliding rails, hook assembly is movably connected with iron plate by sliding rail, the spacing between hook assembly can be adjusted by sliding rail, so that dismounting device can be respectively applicable to the dismounting of embedded bearing and outer inlay bearing, and the versatility is high.

[0021] The side of the iron plate away from the hook assembly is fixedly connected with an internal thread cylinder, which is located in the middle part of the iron plate; the screw rod passes through the top end of the bracket and is threadedly connected with the internal thread cylinder. There is a screw rail on the outside of the screw rod, which matches the internal thread cylinder. By rotating, the screw rod can be advanced or retreated to achieve the purpose of drawing.

[0022] The utility model is simple to manufacture, requires few parts, and can be completed without complex processes. Moreover, it has a small overall size, is easy to carry, and is convenient for on-site use. It also has a low requirement for the technical level of the user, and is highly practical. DRAWINGS

[0023] To more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0024] Figure 1 A structure schematic view of the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0025] Figure 2 A schematic view of one side of the inner thread cylinder on the iron plate in the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0026] Figure 3 A schematic view of the other side of the iron plate in the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0027] Figure 4 A structure schematic view of the first hook body in the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0028] Figure 5 A schematic view of the connection between the hook assembly and the iron plate in the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0029] Figure 6 A structure schematic view of the top end of the support in the rolling bearing dismounting device provided by the embodiment of the present application is provided.

[0030] Icon: 1-iron plate; 101-slideway; 2-hook assembly; 201-first hook body; 202-second hook body; 203-vertical part; 204-through hole; 205-fastening bolt; 206-bent part; 3-inner thread cylinder; 4-screw rod; 5-support; 501-round hole; 6-rotating bearing. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0033] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a rolling bearing disassembly device, including: an iron plate 1, a hook assembly 2, an inner thread cylinder 3, a screw 4, and a bracket 5;

[0039] A slide rail 101 is provided on the surface of the iron plate 1. The hook assembly 2 is movably connected to the iron plate 1 through the slide rail 101. An inner thread cylinder 3 is fixed to the side of the iron plate 1 away from the hook assembly 2. The inner thread cylinder 3 is located in the middle of the iron plate 1.

[0040] The screw 4 passes through the top of the bracket 5 and is threadedly connected to the internal threaded cylinder 3.

[0041] The slide rail 101 consists of two rectangular holes arranged in parallel along the horizontal direction on the surface of the iron plate 1.

[0042] Specifically, the cross section of the iron plate 1 is rectangular. On the surface of the iron plate 1, two rectangular sliding holes are formed to form a sliding rail 101. The hook assembly 2 is movably connected with the sliding rail 101, so that the hook assembly 2 can slide in the left-right direction on the surface of the iron plate 1. In actual operation, the user can flexibly adjust the position of the hook assembly 2 according to the actual diameter of the rolling bearing. After adjustment, the hook assembly 2 can be fixed on one side of the iron plate 1, so that the hook assembly 2 is perpendicular to the surface of the rolling bearing. Therefore, the utility model has wide applicability and can meet the disassembly requirements of rolling bearings of different sizes.

[0043] The bottom end of the hook assembly 2 is designed as a hook shape. When facing the embedded rolling bearing, the user can adjust the hook assembly 2 to the appropriate position, and then use the outer hook to tightly hook the edge part on the inner side of the bearing. When facing the externally mounted rolling bearing (as shown in the figure), the hook assembly 2 is also adjusted to the appropriate position, and at this time the inner hook is tightly hooked on the outer edge of the bearing. Therefore, the utility model not only has universality in size application range, but also can be effectively applied to the disassembly of rolling bearings with embedded and externally mounted two different installation modes. Figure 1

[0044] The inner thread cylinder 3 is fixed at the center position of the side of the iron plate 1 away from the hook assembly 2. The inner wall of the inner thread cylinder 3 is processed with an internal thread, which is matched with the thread of the screw rod 4. The screw rod 4 penetrates the top end of the support 5 and is threadedly connected with the inner thread cylinder 3. In actual operation, the screw rod 4 can be advanced or retreated based on the inner thread cylinder 3 by rotating the screw rod 4. The support 5 is arranged above the iron plate 1, which can provide a support point for the screw rod 4, so that the screw rod 4 remains in a vertical state and prevents the screw rod 4 from being inclined due to being too long.

[0045] With the aid of a hand tool (such as a wrench) or an electric rotating tool, the top of the screw rod 4 is pulled. Since the screw rod 4 is threadedly connected with the inner thread cylinder 3, when the screw rod 4 is pulled, the inner thread cylinder 3 and the iron plate 1 are synchronously moved upward, and then the rolling bearing is smoothly pulled out through the action of the hook assembly 2 on the rolling bearing, so that the rolling bearing is efficiently disassembled.

[0046] It should be noted that the support 5 is made of high-strength channel steel, and the two end feet are supported on the ground or the plane of other mechanical parts. The top of the support 5 is penetrated by the screw rod 4, but they are not threadedly connected. The diameter of the round hole can allow the screw rod 4 to pass through, that is, there is a gap between them, so that the support 5 is not pulled up when the screw rod 4 is pulled.

[0047] In the embodiment of the utility model, the hook assembly 2 comprises a first hook body 201, a second hook body 202 and a fastening bolt 205;​

[0048] Both the first hook 201 and the second hook 202 have through holes 204 on the surface of the vertical part 203. The fastening bolt 205 passes through the through hole 204 and the slide rail 101 to connect the hook assembly 2 with the iron plate 1.

[0049] The center-to-center distance between the two slide rails 101 is the same as the difference in longitudinal length between the vertical portion 203 of the first hook 201 and the second hook 202.

[0050] The bent portions 206 of the first hook 201 and the second hook 202 are curved to both sides.

[0051] Specifically, such as Figure 4 , Figure 5 As shown, the hook assembly 2 mainly includes a first hook body 201, a second hook body 202, and two fastening bolts 205. To achieve a secure connection, each fastening bolt 205 is equipped with a matching fastening nut.

[0052] The first hook body 201 and the second hook body 202 are conventional hook bodies, both including a vertical part 203 and a bent part 206. The vertical part 203 preferably has a width of 15mm and a thickness of 8mm, ensuring both structural strength and overall portability. A through hole 204 is provided on the upper surface of the vertical part 203. The diameter of the through hole 204 is designed to match the width (i.e., longitudinal spacing) of the slide rail 101; preferably, the diameter is 10mm. Simultaneously, 8mm diameter fastening bolts 205 are used.

[0053] When fixing the hook assembly 2, firstly, the first hook 201 and the second hook 202 need to be adjusted to the appropriate positions according to the specific location of the rolling bearing to be disassembled. After the positions are determined, the fastening bolt 205 is passed through the through hole 204 and the slide rail 101 in sequence to fix the first hook 201 and the second hook 202 to the surface of the iron plate 1 opposite to the inner thread cylinder 3. At this time, a matching fastening nut is also needed for locking. By rotating the fastening nut, it engages tightly with the fastening bolt 205, thus fixing the first hook 201 and the second hook 202 to the iron plate 1.

[0054] It should be noted that the first hook 201 and the second hook 202 have different radial lengths at the vertical portion 203, but their bent portions 206 are exactly the same size. This effectively prevents uneven force distribution during the upward pulling of the bolt to be disassembled. Furthermore, the length difference of the vertical portions 203 is the same as the distance between the two slide rails 101, ensuring that the bottom ends of the bent portions 206 are on the same horizontal line. When the hook assembly 2 is working, it ensures that both sides of the bolt to be disassembled are fully hooked, avoiding a situation where one side is higher than the other, thus guaranteeing the stability and reliability of the disassembly work.

[0055] In addition, the bending portions 206 of the first hook body 201 and the second hook body 202 are bent to two sides, and can tightly hook the rolling bolt from the outer side edge or the inner side edge, so that the hook assembly 2 can be effectively applied to the disassembly work of the rolling bearing in the embedded and the inlaid two different installation modes, and the flexibility and practicality of use are improved.

[0056] In the embodiment of the utility model, as shown in Figure 6 The top end of the bracket 5 is provided with a circular hole 501, and the screw rod 4 penetrates the bracket 5 through the circular hole 501.

[0057] The top end of the circular hole 501 is provided with a rotating bearing 6, and the screw rod 4 penetrates the rotating bearing 6 and the circular hole 501 in sequence.

[0058] Specifically, the cross section of the bracket 5 is trapezoidal, is made of high-strength channel steel, and is provided with a circular hole 501 in the middle. The circular hole 501 can allow the screw rod 4 to penetrate, and a gap is left between the two. The top of the circular hole 501 is provided with a rotating bearing 6 to reduce the friction force during rotation. The rotating bearing 6 is adjacent to the hexagonal top of the screw rod 4, and the screw rod 4 is made of high-strength tensile carbon steel.

[0059] In the embodiment of the utility model, the thickness of the iron plate 1 is not less than 10 mm.

[0060] The hole diameter of the through hole 204 is the same as the radial length of the sliding rail 101.

[0061] One end of the screw rod 4 is a hexagonal fixed end, and the other end of the screw rod 4 is a pointed end.

[0062] Specifically, the iron plate 1 is an important basic component of the entire rolling bearing disassembly device, and the thickness thereof is not less than 10 mm. In the actual manufacturing process, iron plates with thicknesses of 10 mm, 12 mm, 15 mm, etc. can be selected, and the specific thickness is determined according to the size of the bearing, the load bearing, and the stability requirements of the entire device. The thicker iron plate 1 can provide sufficient strength support for the entire device, effectively preventing deformation due to a large pulling force during disassembly of the rolling bearing.

[0063] The hole diameter of the through hole 204 is the same as the radial length of the sliding rail 101, which ensures the installation accuracy of the hook assembly 2 on the iron plate 1, so that the fastening bolt 205 can smoothly penetrate and fix the two.

[0064] One end of the screw rod 4 is designed as a standard hexagonal structure, and the size specification conforms to a common wrench operation standard, such as a size corresponding to a thread specification of M10, M12, etc., so as to facilitate rotation operation by using a manual wrench or an electric tool. The other end of the screw rod 4 is in a sharp pointed end shape, and abuts against a top end of a center shaft on which the rolling bearing is sleeved.

[0065] Based on the above embodiment, the working process of the rolling bearing dismounting device provided by the utility model is as follows: according to the installation mode (embedded type or externally inlaid type) and the actual diameter of the rolling bearing to be dismounted, the first hook body 201 and the second hook body 202 are respectively aligned on the two slide rails 101 of the iron plate 1, and the hooks are hooked on the edges of the rolling bearing, and the two fastening bolts 205 are respectively inserted through the through holes 204 on the vertical parts 203 of the first hook body 201 and the second hook body 202 and the slide rails 101, and are locked by the fastening nuts, so as to ensure that the hook assembly 2 is stably connected to the iron plate 1.

[0066] The trapezoidal support 5 is placed above the iron plate 1, so that the circular hole 501 at the top center of the support 5 is aligned with the inner thread cylinder 3 in the middle of the iron plate 1. The screw rod 4 provided with the rotating bearing 6 is sequentially inserted through the rotating bearing 6 and the circular hole 501, and is threadedly connected with the inner thread cylinder 3. At this time, the two end feet of the support 5 are supported on the ground or the plane of other mechanical parts.

[0067] The hexagonal end of the screw rod 4 is clamped by using a manual wrench or an electric rotating tool, and the screw rod 4 is rotated. The screw rod 4 starts to advance or retreat based on the thread connection with the inner thread cylinder 3, and when the screw rod 4 is pulled out, the inner thread cylinder 3 and the iron plate 1 are synchronously moved upward. When the iron plate 1 moves, the hook assembly 2 acts on the rolling bearing, and the rolling bearing is pulled out from the shaft. The pointed end of the other end of the screw rod 4 abuts against the top end of the center shaft on which the rolling bearing is sleeved, and assists in stable force application, until the rolling bearing is completely dismounted.

[0068] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A rolling bearing dismounting device, characterized in that, Include: Iron plate (1), hook assembly (2), inner wire cylinder (3), screw rod (4) and support (5); The surface of the iron plate (1) is provided with a slide rail (101), the hook assembly (2) is movably connected with the iron plate (1) through the slide rail (101), the inner wire cylinder (3) is fixedly connected to the side of the iron plate (1) away from the hook assembly (2), and the inner wire cylinder (3) is located at the middle part of the iron plate (1); The screw rod (4) penetrates the top end of the support (5) and is threadedly connected with the inner wire cylinder (3).

2. The rolling bearing dismounting device according to claim 1, wherein the slide rail (101) is two rectangular holes arranged in parallel on the surface of the iron plate (1) along the horizontal direction.

3. The rolling bearing dismounting device according to claim 2, wherein the hook assembly (2) comprises a first hook body (201), a second hook body (202) and a fastening bolt (205); the first hook body (201) and the second hook body (202) are both provided with a through hole (204) on the surface of a vertical part (203), and the fastening bolt (205) penetrates the through hole (204) and the slide rail (101) to connect the hook assembly (2) with the iron plate (1).

4. The rolling bearing dismounting device according to claim 3, wherein the center distance between the two slide rails (101) is the same as the difference between the vertical length of the first hook body (201) and the vertical length of the second hook body (202).

5. The rolling bearing dismounting device according to claim 4, wherein the bending parts (206) of the first hook body (201) and the second hook body (202) are arc-shaped and bent to two sides.

6. The rolling bearing dismounting device according to claim 1, wherein the support (5) is arranged above the iron plate (1) in a trapezoidal shape, a circular hole (501) is formed in the center of the top end of the support (5), and the screw rod (4) penetrates the support (5) through the circular hole (501).

7. The rolling bearing dismounting device according to claim 6, wherein a rotating bearing (6) is arranged at the top end of the circular hole (501), and the screw rod (4) penetrates the rotating bearing (6) and the circular hole (501) in sequence.

8. The rolling bearing dismounting device according to claim 1, wherein the thickness of the iron plate (1) is not less than 10 mm.

9. The rolling bearing dismounting device according to any one of claims 3-5, wherein the diameter of the through hole (204) is the same as the radial length of the slide rail (101).

10. The rolling bearing dismounting device according to claim 1, wherein one end of the screw rod (4) is a hexagonal fixed end, and the other end of the screw rod (4) is a pointed end. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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