Ramp hammer type bearing installation tool

Abstract

The utility model provides a rammer type bearing installation tool, relates to a bearing installation tool, and solves the technical problems that a bearing installation tool adopted in the prior art is complex in structure, tedious in operation and not suitable for outdoor maintenance scenes. The device comprises a rammer rod, a rammer and a press-fitting unit, one end of the rammer rod is provided with a limiting block, and the other end is connected with the press-fitting unit; the rammer is arranged on the rammer rod in a sleeving mode and can slide between the limiting block and the press-fitting unit. The press-fitting unit comprises a connecting sleeve and a plurality of press-fitting heads, and the press-fitting heads are used for pressing bearings to be mounted into the corresponding mounting shafts; one end of the connecting sleeve is connected with the other end of the rammer rod, and the other end is connected with one end of the press-fitting head; the other end of the press-fitting head is used for press-fitting the end face of a bearing to be mounted, and the outer diameter of the other end of the press-fitting head is matched with the outer diameter of the end face of the bearing to be mounted.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing installation tool, concretely relates to a rammer type bearing installation tool. BACKGROUND

[0002] Bearing is the key component widely used in mechanical equipment, and the correct installation of bearing is very important to its performance and service life. The general bearing installation method mainly has: press-in method, hot mounting method, cold mounting method and hydraulic mounting method. The heating device needs to be used in the process of installing bearing by hot mounting method, the cooling medium needs to be used in the process of installing bearing by cold mounting method, and the hydraulic mounting method is only suitable for conical hole bearing. Compared with the other three bearing installation methods, the process of installing bearing by press-in method is simple and the installation efficiency is high, therefore, the prior art usually installs bearing by press-in method. The press-in method realizes the installation of bearing through copper bar or special sleeve, in the process of installing bearing by copper bar, copper bar impurities are easy to fall into bearing, thereby reducing bearing precision and service life; in the process of installing bearing by special sleeve, uneven knocking is prone to occur, thereby damaging bearing.

[0003] The utility model patent with publication number CN216430310U discloses a kind of cold mounting tool of small motor rotor bearing, by the inner ring of bearing is kept unmoved by the impact ring alignment, then using sliding rotor shaft sleeve, the impact force generated by rotor shaft sleeve is transmitted to impact ring to produce impact on bearing, and then bearing is installed into rotor shaft. Although the bearing cold mounting tool solves the problems of bearing precision reduction, service life reduction and uneven knocking prone to occur in the prior art, the bearing cold mounting tool not only needs to increase or reduce impact ring to be compatible with different bearing inner rings, but also needs to adjust counterweight to change the impact force on bearing, with complex structure, cumbersome operation and not suitable for on-site maintenance scenarios. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the technical problems of bearing installation tool with complex structure, cumbersome operation and not suitable for on-site maintenance scenarios in the prior art, and provides a rammer type bearing installation tool.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows:

[0006] A rammer type bearing installation tool, characterized in that it comprises a rammer rod, a rammer and a press-fitting unit.

[0007] One end of the rammer rod is provided with a limit block, and the other end is connected with the press-fitting unit.

[0008] The rammer sleeve is arranged on the rammer rod, and the rammer can slide between the limit block and the press-fitting unit.

[0009] The pressing unit comprises a connecting sleeve and a plurality of pressing heads for pressing the bearing to be installed into the corresponding installation shaft;

[0010] One end of the connecting sleeve is connected with the other end of the hammer rod, and the other end is connected with one end of the pressing head; the other end of the pressing head is used for pressing the end face of the bearing to be installed, and the outer diameter of the other end of the pressing head is matched with the outer diameter of the end face of the bearing to be installed.

[0011] Further, the connecting sleeve is cylindrical, and a threaded hole is arranged in the inner portion of the end of the cylinder close to the hammer rod and connected with the external thread arranged at the other end of the hammer rod; the other end of the cylinder away from the hammer rod is open and provided with an internal thread for connecting with the external thread arranged at one end of the plurality of pressing heads; a pair of first dismounting holes corresponding to each other are arranged along the radial direction of the outer periphery of the cylinder.

[0012] Further, the pressing head is an integral piece comprising a connecting section and an installation section;

[0013] The connecting section is cylindrical, and the external thread is arranged on the outer periphery of the cylinder, and the inner diameter of the cylinder is matched with the outer diameter of the installation shaft of the bearing to be installed;

[0014] In order to enable the installation shaft to enter the connecting sleeve during the process of pressing the bearing to be installed into the installation shaft, the installation section is a conical frustum, and a through hole is arranged along the axial direction of the conical frustum, and the diameter of the through hole is the same as the inner diameter of the connecting section; the outer diameter of the small end of the conical frustum is the same as or greater than the outer diameter of the connecting sleeve, and the outer diameter of the large end of the conical frustum is matched with the outer diameter of the end face of the bearing to be installed.

[0015] Further, an annular groove coaxial with the through hole is arranged on the end face of the large end of the conical frustum, and the size and width of the annular groove are matched with the size and width of the gap between the bearing outer ring and the bearing inner ring of the bearing to be installed;

[0016] A pair of second dismounting holes corresponding to each other are arranged along the radial direction of the installation section.

[0017] Further, in order to facilitate holding, the hammer is a columnar body, and a through hole is arranged along the axial direction of the columnar body for sleeving the hammer on the hammer rod; the two ends of the hammer are both circular arc transitions, and the outer diameters of the two ends are the same; the outer periphery of the middle part of the hammer is concave and curved.

[0018] Further, in order to prevent the hammer from falling off the hammer rod, the limiting block is a circular truncated cone, and the outer diameter of the circular truncated cone is greater than the diameter of the axial through hole of the hammer.

[0019] The beneficial effects of the present application are as follows:

[0020] 1. The present application has the advantages of simple structure, easy operation, and can effectively improve the installation efficiency of the bearing to be installed.

[0021] 2、The utility model is equipped with a plurality of different size press -fitting heads, can replace the press -fitting head, suitable for different models, different specifications bearing to be installed.

[0022] 3、The utility model is safe and durable, can be widely used in various mechanical maintenance and after -sales service scene, especially the scene of going out for repair. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic diagram of the utility model hammer type bearing installation tool embodiment;

[0024] Figure 2 It is Figure 1 B-B section view of

[0025] Figure 3 It is the structure schematic diagram of the utility model embodiment connecting sleeve;

[0026] Figure 4 It is Figure 3 A-A section view of

[0027] Figure 5 It is the three -dimensional structure schematic diagram of the utility model embodiment press -fitting head;

[0028] Figure 6 It is the side view structure schematic diagram of the utility model embodiment press -fitting head;

[0029] Figure 7 It is the schematic diagram of the utility model embodiment hammer type bearing installation tool when installing bearing to be installed.

[0030] REFERENCE NUMERALS:

[0031] 1-ram rod, 2-ram, 3-press -fitting unit, 4-limiting block, 5-bearing, 6-mounting shaft, 7-connecting sleeve, 71-threaded hole, 72-internal thread, 73-first dismounting hole, 8-press -fitting head, 81-connection section, 82-mounting section, 82-1-through hole, 82-2-annular groove, 82-3-second dismounting hole. DETAILED DESCRIPTION

[0032] The content of the utility model is further described in detail in the following combining with the drawings and specific embodiments:

[0033] A ram type bearing installation tool, as Figures 1 to 7 Shown, including ram rod 1, ram 2 and press -fitting unit 3;As Figure 1 And Figure 2As shown, one end of the hammer rod 1 is provided with a limit block 4, and the other end is connected with the press-fitting unit 3; the hammer 2 is sleeved on the hammer rod 1, and the hammer 2 can slide between the limit block 4 and the press-fitting unit 3; in order to facilitate holding, the hammer 2 is a columnar body, which is provided with a through hole in the axial direction, used for sleeving the hammer 2 on the hammer rod 1; both ends of the hammer 2 are circularly arc transitioned, and the outer diameters of both ends are the same, and the middle part of the outer periphery of the hammer 2 is a concave curved surface; in order to prevent the hammer from falling off the hammer rod, the limit block 4 is provided as a circular table, and the outer diameter of the circular table is greater than the diameter of the axial through hole of the hammer 2; the press-fitting unit 3 includes a connecting sleeve 7 and a plurality of press-fitting heads 8, and the press-fitting head 8 is used for pressing the bearing 5 to be installed into the corresponding mounting shaft 6; as shown Figure 7 As shown, one end of the connecting sleeve 7 is connected with the other end of the hammer rod 1, and the other end is connected with one end of the press-fitting head 8; the other end of the press-fitting head 8 is used for pressing the end face of the bearing 5 to be installed, and the outer diameter of the other end of the press-fitting head 8 is matched with the outer diameter of the end face of the bearing 5 to be installed.

[0034] As shown Figure 3 and Figure 4 As shown, the connecting sleeve 7 is a cylinder, and a threaded hole 71 is arranged in the inner part of the end of the cylinder close to the hammer rod 1, and is connected with the external thread arranged at the other end of the hammer rod 1; the end of the cylinder away from the hammer rod 1 is an opening and is provided with an internal thread 72, used for connecting with the external thread arranged at one end of the plurality of press-fitting heads 8; a pair of first dismounting holes 73 corresponding to each other are arranged on the outer periphery of the cylinder in the radial direction.

[0035] As shown Figure 5 and Figure 6 As shown, the press-fitting head 8 is an integral piece, including a connecting section 81 and a mounting section 82; the connecting section 81 is a cylinder, and the outer periphery of the cylinder is provided with an external thread, and the inner diameter of the cylinder is matched with the outer diameter of the mounting shaft 6 of the bearing 5 to be installed; in order to enable the mounting shaft to enter the connecting sleeve during the process of pressing the bearing to be installed into the mounting shaft, the mounting section 82 is a conical table, which is provided with a through hole 82-1 in the axial direction, and the diameter of the through hole 82-1 is the same as the inner diameter of the connecting section 81; the outer diameter of the small end of the conical table is the same as or greater than the outer diameter of the connecting sleeve 7, the outer diameter of the large end of the conical table is matched with the outer diameter of the end face of the bearing 5 to be installed, and the large end face of the conical table is provided with an annular groove 82-2 coaxial with the through hole 82-1, and the size and width of the annular groove 82-2 are matched with the size and width of the gap between the bearing outer ring and the bearing inner ring of the bearing 5 to be installed; a pair of second dismounting holes 82-3 corresponding to each other are arranged on the mounting section 82 in the radial direction.

[0036] The working principle of the hammer type bearing installation tool in the above embodiment is as follows:

[0037] 1) Select the appropriate press-fitting head according to the model of the bearing to be installed.

[0038] 2) Put the ram sleeve on the ram rod, then assemble the ram rod, connecting sleeve and press head.

[0039] 3) Put the bearing 5 to be installed on its corresponding installation shaft 6, and align the assembled ram bearing installation tool with the bearing 5 to be installed.

[0040] 4) Force the ram to slide up and down along the ram rod, and install the bearing 5 to be installed in place through the inertia of the ram.

[0041] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A hammer-type bearing installation tool, characterized in that: It includes a hammer rod (1), a hammer (2), and a pressing unit (3); One end of the hammer rod (1) is provided with a limit block (4), and the other end is connected to the pressing unit (3); The hammer (2) is sleeved on the hammer rod (1), and the hammer (2) can slide between the limiting block (4) and the pressing unit (3); The press-fit unit (3) includes a connecting sleeve (7) and multiple press-fit heads (8), which are used to press the bearing (5) to be installed into its corresponding mounting shaft (6); One end of the connecting sleeve (7) is connected to the other end of the hammer rod (1), and the other end is connected to one end of the pressing head (8); the other end of the pressing head (8) is used to press the end face of the bearing (5) to be installed, and the outer diameter of the other end of the pressing head (8) is adapted to the outer diameter of the end face of the bearing (5) to be installed.

2. The hammer-type bearing installation tool according to claim 1, characterized in that: The connecting sleeve (7) is cylindrical. The end of the cylinder near the hammer rod (1) has a threaded hole (71) inside, which is connected to the external thread at the other end of the hammer rod (1). The end of the cylinder away from the hammer rod (1) is open and has an internal thread (72) for connecting to the external thread at one end of a plurality of press heads (8). A pair of corresponding first disassembly holes (73) are provided on the outer circumference of the cylinder.

3. The hammer-type bearing installation tool according to claim 2, characterized in that: The press-fit head (8) is a single piece, including a connecting section (81) and an mounting section (82); The connecting section (81) is cylindrical, with external threads on the outer circumference of the cylinder, and the inner diameter of the cylinder is adapted to the outer diameter of the mounting shaft (6) of the bearing (5) to be installed; The mounting section (82) is a truncated cone with a through hole (82-1) along the axial direction. The diameter of the through hole (82-1) is the same as the inner diameter of the connecting section (81). The outer diameter of the small end of the truncated cone is the same as or greater than the outer diameter of the connecting sleeve (7). The outer diameter of the large end of the truncated cone is adapted to the outer diameter of the end face of the bearing (5) to be installed.

4. The hammer-type bearing installation tool according to claim 3, characterized in that: The large end face of the cone is provided with an annular groove (82-2) coaxial with the through hole (82-1). The size and width of the annular groove (82-2) are adapted to the size and width of the gap between the outer ring and the inner ring of the bearing to be installed (5). The mounting section (82) is provided with a pair of corresponding second disassembly holes (82-3) in the radial direction.

5. The hammer-type bearing installation tool according to claim 1, characterized in that: The hammer (2) is a columnar body with a through hole along the axial direction for fitting the hammer (2) onto the hammer rod (1). Both ends of the hammer (2) are rounded and have the same outer diameter. The outer periphery of the hammer (2) is concave curved.

6. The hammer-type bearing installation tool according to claim 5, characterized in that: The limiting block (4) is configured as a frustum, and the outer diameter of the frustum is larger than the diameter of the axial through hole in the hammer (2).

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