Bearing bush extruding device

Abstract

The utility model provides a bearing sleeve press out device, including pressure -bearing mechanism and hydraulic drive mechanism, wherein, pressure -bearing mechanism includes first pressure plate, second pressure plate and support rod, first pressure plate sets up in second pressure plate upper portion, and first pressure plate and second pressure plate have the space for accommodating bearing sleeve between, and the both ends of support rod are connected with first pressure plate and second pressure plate respectively, hydraulic drive mechanism includes fixed part and drive part, and fixed part is fixed on first pressure plate, and drive part passes through first pressure plate and is connected with bearing sleeve, be provided with the positioning hole for bearing sleeve passing on second pressure plate. Compared with prior art, the bearing sleeve press out device disclosed by the utility model not only simple structure, and hydraulic drive mechanism can provide smooth, controllable axial press out force, can effectively avoid the impact damage and local stress concentration phenomenon caused by traditional hammering, prying etc.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tool technology, and specifically relates to a bearing sleeve pressing device. Background Technology

[0002] Bearing sleeves are key basic components used in mechanical equipment for the precise installation and support of bearings. They are usually press-fitted into the equipment housing or end cover by interference or transition fit. Under the influence of long-term load, vibration and wear, the inner hole of the bearing sleeve is prone to failure modes such as dimensional deviation, deformation and scoring. Regular replacement is required to restore the accuracy of the equipment. Therefore, the smooth disassembly of bearing sleeves is an important part of maintenance work.

[0003] In existing technologies, the disassembly of failed bearing sleeves often employs traditional methods such as hammering, prying with a crowbar, or using a simple puller. While these methods are widely used, they have significant drawbacks:

[0004] 1) It is easy to cause secondary damage: The impact force generated by hammering and the local concentrated stress generated by prying can easily cause damage to the threads of the bearing sleeve itself or the mating equipment body orifice, scratches or even deformation of the mating surface.

[0005] 2) Low disassembly efficiency and safety: This method relies heavily on the operator's personal experience and skill level, and the operation process is laborious and difficult to control.

[0006] Therefore, how to disassemble the bearing sleeve efficiently and without damage is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a bearing sleeve pressing device that is not only simple in structure, but also capable of efficiently and non-destructively disassembling bearing sleeves.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A bearing sleeve pressing device, comprising:

[0010] The pressure-bearing mechanism includes a first pressure plate, a second pressure plate, and a support rod. The first pressure plate is disposed on the upper part of the second pressure plate, and there is a space between the first pressure plate and the second pressure plate for accommodating a bearing sleeve. The two ends of the support rod are respectively connected to the first pressure plate and the second pressure plate.

[0011] A hydraulic drive mechanism includes a fixed part and a drive part, wherein the fixed part is fixed to the first pressure plate, and the drive part passes through the first pressure plate and is connected to the bearing sleeve;

[0012] The second pressure plate is provided with positioning holes for the bearing sleeve to pass through.

[0013] Optionally, the shape of the positioning hole is adapted to the outer surface of the bearing sleeve.

[0014] Optionally, a positioning ring may also be included, which is disposed around the positioning hole in the circumferential direction.

[0015] Optionally, there are multiple support rods, which are arranged circumferentially along the edges of the first pressure plate and the second pressure plate.

[0016] Optionally, the distance between any two adjacent support rods is equal.

[0017] Optionally, the support rod is provided with a first threaded portion and a second threaded portion;

[0018] The first pressure plate is provided with a third threaded portion that mates with the first threaded portion, and the second pressure plate is provided with a fourth threaded portion that mates with the second threaded portion.

[0019] Optionally, a first fastener and a second fastener may also be included;

[0020] The first fastener is disposed on the first threaded portion and is used to fasten the support rod to the first pressure plate;

[0021] The second fastener is disposed on the second threaded portion and is used to fasten the support rod and the second pressure plate.

[0022] Optionally, the hydraulic drive mechanism is a hydraulic jack, which includes a cylinder and a piston rod. The cylinder is disposed on the first pressure plate, and the piston rod passes through the first pressure plate and is connected to the end of the bearing sleeve to be disassembled.

[0023] Optionally, a pressure head is provided on the piston rod, and the end face shape of the pressure head is adapted to the structure of the end of the bearing sleeve to be disassembled.

[0024] Optionally, the hydraulic drive mechanism is an annular hydraulic nut, which includes a nut body and an annular piston. The nut body is fixed to the first pressure plate, and the annular piston passes through the first pressure plate and connects to the end of the bearing sleeve to be disassembled.

[0025] As can be seen from the above technical solution, when it is necessary to disassemble the bearing sleeve, firstly, the bearing sleeve installed on the equipment is passed through the positioning hole of the second pressure plate, and the positions of the first pressure plate and the second pressure plate are adjusted so that the space to accommodate the bearing sleeve is large enough to facilitate operation. Then, the drive part of the hydraulic drive mechanism is aligned with the bearing sleeve, the hydraulic drive mechanism is started, and the bearing sleeve is slowly pressed out of the equipment.

[0026] Compared with the prior art, the bearing sleeve pressing device disclosed in this utility model embodiment is not only simple in structure, but also has a hydraulic drive mechanism that can provide a stable and controllable axial pressing force, which can effectively avoid impact damage and local stress concentration caused by traditional hammering, prying and other methods, and can efficiently and non-destructively disassemble the bearing sleeve. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the bearing sleeve pressing device disclosed in the embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-First pressure plate, 200-Second pressure plate, 300-Support rod, 400-Hydraulic drive mechanism, 500-Positioning hole, 600-Bearing sleeve, 700-First fastener, 800-Second fastener. Detailed Implementation

[0031] In view of this, the core of this utility model is to provide a bearing sleeve pressing device, which is not only simple in structure, but also capable of efficiently and without damage disassembling the bearing sleeve.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Please refer to... Figure 1 .

[0033] The bearing sleeve pressing device disclosed in this embodiment of the present invention includes a pressure-bearing mechanism and a hydraulic drive mechanism 400. The pressure-bearing mechanism includes a first pressure plate 100, a second pressure plate 200, and a support rod 300. The first pressure plate 100 is disposed on the upper part of the second pressure plate 200, and there is a space between the first pressure plate 100 and the second pressure plate 200 for accommodating the bearing sleeve 600. The two ends of the support rod 300 are respectively connected to the first pressure plate 100 and the second pressure plate 200. The hydraulic drive mechanism 400 includes a fixing part and a driving part. The fixing part is fixed on the first pressure plate 100, and the driving part passes through the first pressure plate 100 and is connected to the bearing sleeve 600. The second pressure plate 200 is provided with a positioning hole for the bearing sleeve 600 to pass through.

[0034] When it is necessary to disassemble the bearing sleeve 600, first pass the bearing sleeve 600 installed on the equipment through the positioning hole of the second pressure plate 200, adjust the position of the first pressure plate 100 and the second pressure plate 200 so that the space to accommodate the bearing sleeve 600 is large enough for easy operation, then align the drive part of the hydraulic drive mechanism 400 with the bearing sleeve 600, start the hydraulic drive mechanism 400, and slowly press the bearing sleeve 600 out of the equipment.

[0035] Compared with the prior art, the bearing sleeve pressing device disclosed in this utility model embodiment is not only simple in structure, but also the hydraulic drive mechanism 400 can provide a stable and controllable axial pressing force, which can effectively avoid the impact damage and local stress concentration caused by traditional hammering, prying and other methods, and can efficiently and non-destructively disassemble the bearing sleeve 600.

[0036] It should be noted that the device for installing the bearing sleeve 600 is located at the lower part of the second pressure plate 200 (not shown in the figure).

[0037] The specific shape of the positioning hole 500 is not limited in this embodiment of the utility model. Any structure that meets the requirements of this utility model is within the protection scope of this utility model.

[0038] As a preferred embodiment, the shape of the positioning hole 500 disclosed in this utility model embodiment is adapted to the outer surface of the bearing sleeve 600. The positioning hole 500 can automatically and quickly center the bearing sleeve 600 using the side wall of the positioning hole 500, ensuring that its axis coincides with the force application axis of the hydraulic drive mechanism 400, effectively avoiding misalignment and jamming during the pressing process of the bearing sleeve 600.

[0039] As a further embodiment, the bearing sleeve pressing device disclosed in this utility model embodiment also includes a positioning ring, wherein the positioning ring is disposed around the positioning hole 500 in the circumferential direction. This arrangement provides the bearing sleeve 600 with a precise radial positioning reference within the inner hole of the positioning ring, ensuring that the force applied during pressing coincides with the axis of the bearing sleeve 600, effectively preventing misalignment and jamming.

[0040] It should be noted that the support rods 300 disclosed in this embodiment of the present invention are multiple and are arranged along the circumference of the first pressure plate 100 and the second pressure plate 200 at their edges. With this arrangement, the support rods 300 can provide effective support for the first pressure plate 100 and the second pressure plate 200, thereby guiding the pressure to be transmitted axially.

[0041] As a further embodiment, in the bearing sleeve pressing device disclosed in this utility model embodiment, the distance between every two adjacent support rods 300 is equal. With this arrangement, the pressing force and reaction force borne by the first pressure plate 100 and the second pressure plate 200 can be evenly distributed through each support rod 300.

[0042] As a further embodiment, the support rod 300 disclosed in this utility model embodiment is provided with a first threaded portion and a second threaded portion, wherein the first pressure plate 100 is provided with a third threaded portion that mates with the first threaded portion, and the second pressure plate 200 is provided with a fourth threaded portion that mates with the second threaded portion. This arrangement allows for precise and continuous adjustment of the distance between the first pressure plate 100 and the second pressure plate 200, resulting in a simple structure and convenient operation.

[0043] In order to achieve the connection strength between the first pressure plate 100, the second pressure plate 200 and the support rod 300, the bearing sleeve pressing device disclosed in this utility model embodiment further includes a first fastener 700 and a second fastener 800; the first fastener 700 is disposed on the first threaded portion and is used to fasten the support rod 300 and the first pressure plate 100; the second fastener 800 is disposed on the second threaded portion and is used to fasten the support rod 300 and the second pressure plate 200.

[0044] This utility model embodiment does not limit the specific structure of the hydraulic drive mechanism 400. Any structure that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0045] As one embodiment, the hydraulic drive mechanism 400 disclosed in this utility model embodiment is a hydraulic jack. The hydraulic jack includes a cylinder and a piston rod. The cylinder is disposed on a first pressure plate 100, and the piston rod passes through the first pressure plate 100 and is connected to a bearing sleeve 600. In this way, the labor-saving characteristics of the hydraulic jack can be utilized. The operator only needs to apply a small force through a manual pump or lever to generate a huge pushing force at the end of the piston rod, which greatly reduces the labor intensity.

[0046] The piston rod is equipped with a pressure head, the end face shape of which is adapted to the structure of the end of the bearing sleeve 600 to be disassembled. This design ensures a tight fit between the pressure head and the end structure of the bearing sleeve 600, guaranteeing precise pressure transmission along the axis and effectively preventing uneven loading, slippage, or component damage due to poor contact. Furthermore, by replacing the pressure head with different end face shapes, various end structures of the bearing sleeve 600 can be safely and efficiently adapted, greatly improving the versatility of the bearing sleeve pressing device.

[0047] In another specific embodiment, the hydraulic drive mechanism 400 disclosed in this utility model embodiment is an annular hydraulic nut, wherein the annular hydraulic nut includes a nut body and an annular piston. The nut body is fixed on the first pressure plate 100, and the annular piston passes through the first pressure plate 100 and connects to the end of the bearing sleeve 600 to be disassembled. This structural arrangement can also facilitate the disassembly of the bearing sleeve 600.

[0048] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bearing sleeve pressing device, characterized in that, include: The pressure-bearing mechanism includes a first pressure plate, a second pressure plate, and a support rod. The first pressure plate is disposed on the upper part of the second pressure plate, and there is a space between the first pressure plate and the second pressure plate for accommodating a bearing sleeve. The two ends of the support rod are respectively connected to the first pressure plate and the second pressure plate. A hydraulic drive mechanism includes a fixed part and a drive part, wherein the fixed part is fixed to the first pressure plate, and the drive part passes through the first pressure plate and is connected to the bearing sleeve; The second pressure plate is provided with positioning holes for the bearing sleeve to pass through.

2. The bearing sleeve pressing device according to claim 1, characterized in that, The shape of the positioning hole is adapted to the outer surface of the bearing sleeve.

3. The bearing sleeve pressing device according to claim 1, characterized in that, It also includes a positioning ring, which is disposed around the positioning hole along the circumference of the positioning hole.

4. The bearing sleeve pressing device according to claim 1, characterized in that, The support rods are multiple and are arranged along the circumference of the first pressure plate and the second pressure plate at the edges of the first pressure plate and the second pressure plate.

5. The bearing sleeve pressing device according to claim 4, characterized in that, The distance between any two adjacent support rods is equal.

6. The bearing sleeve pressing device according to claim 1, characterized in that, The support rod is provided with a first threaded portion and a second threaded portion; The first pressure plate is provided with a third threaded portion that mates with the first threaded portion, and the second pressure plate is provided with a fourth threaded portion that mates with the second threaded portion.

7. The bearing sleeve pressing device according to claim 6, characterized in that, It also includes the first fastener and the second fastener; The first fastener is disposed on the first threaded portion and is used to fasten the support rod to the first pressure plate; The second fastener is disposed on the second threaded portion and is used to fasten the support rod and the second pressure plate.

8. The bearing sleeve pressing device according to claim 1, characterized in that, The hydraulic drive mechanism is a hydraulic jack, which includes a cylinder and a piston rod. The cylinder is mounted on the first pressure plate, and the piston rod passes through the first pressure plate and connects to the end of the bearing sleeve to be disassembled.

9. The bearing sleeve pressing device according to claim 8, characterized in that, A pressure head is provided on the piston rod, and the end face shape of the pressure head is adapted to the structure of the end of the bearing sleeve to be disassembled.

10. The bearing sleeve pressing device according to claim 8, characterized in that, The hydraulic drive mechanism is an annular hydraulic nut, which includes a nut body and an annular piston. The nut body is fixed to the first pressure plate, and the annular piston passes through the first pressure plate and connects to the end of the bearing sleeve to be disassembled.

Images