Clamping fixture for bearing overhaul

Abstract

The utility model discloses a clamping fixture for bearing maintenance, which comprises a base, an inner ring and an outer ring, a mounting seat is arranged in the base, a turntable is arranged in the mounting seat, a mounting shaft is sleeved with a gear, the turntable is provided with annular teeth, three groups of annularly distributed clamping rods are arranged above the mounting seat, and the inner ring and the outer ring are arranged on the mounting seat. Three sets of annularly-distributed sliding grooves are formed in the installation base, sliding blocks are fixedly installed below the clamping rods, and the three sets of clamping rods are sleeved with the inner rings correspondingly. According to the clamping fixture for bearing overhaul, an inner ring is fixed during bearing overhaul through the arranged mounting base and the three sets of annularly-distributed clamping rods, and the situation that the inner ring synchronously rotates along with rotation of an outer ring in the bearing overhaul process due to the fact that the inner ring of the bearing is not firmly fixed through a traditional clamping fixture is avoided; and the judgment of a worker on the bearing quality is influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing maintenance, and in particular relates to a clamping fixture for bearing maintenance. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. After long-term use, the lubricating oil in the inner and outer rings of the bearings will gradually lose its effect as the years of use increase, affecting the normal use of the bearings. Therefore, it is necessary to conduct regular inspections of the bearings. When inspecting the bearings, it is necessary to use a clamping fixture to fix the bearings and then rotate the outer ring. The staff will observe the rotation of the outer ring and the internal steel ball.

[0003] Most of the bearing maintenance clamps on the market have the following problems when used:

[0004] 1. The traditional clamping fixture does not hold the inner ring of the bearing firmly enough. When the outer ring is rotated, the inner ring is easily driven to rotate synchronously on the fixture due to the large rotation force, which affects the observation of the rolling effect of the steel ball inside the bearing;

[0005] 2. After the traditional clamping fixture fixes the inner ring of the bearing, the staff still needs to manually push the outer ring. The force used to manually push the outer ring varies greatly, and affects the staff's accuracy in observing the rolling effect of the internal steel balls, affecting the accuracy of bearing maintenance. Utility Model Content

[0006] The utility model aims to provide a clamping fixture for bearing maintenance to solve the technical problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a clamping fixture for bearing maintenance, comprising a base, an inner ring and an outer ring, a mounting seat is provided in the base, a turntable is provided in the mounting seat, the turntable is rotatably connected to the mounting seat through a mounting shaft, a gear is sleeved on the mounting shaft, the turntable is provided with annular teeth, three groups of annularly distributed clamping rods are provided above the mounting seat, three groups of annularly distributed sliding grooves are opened on the mounting seat, a slider is fixedly installed below the clamping rod, and the inner ring is respectively sleeved on the three groups of clamping rods.

[0008] Preferably, a fixing frame is provided above the base, the fixing frame is slidably connected to the base, a gear ring is provided inside the base, the gear ring is fixedly connected to the fixing frame, a driving wheel is provided inside the base, an adjusting rod is provided inside the fixing frame, the adjusting rod is slidably connected to the fixing frame, a threaded rod is provided inside the fixing frame, a suction cup is fixedly installed on one end of the adjusting rod close to the outer ring, a first motor is provided inside the fixing frame, and a second motor is provided inside the base.

[0009] Preferably, a rack is provided in the mounting seat, the rack is slidably connected to the mounting seat, the rack is meshingly connected to the gear, a cylinder is provided in the mounting seat, and the rack is connected to the output end of the cylinder piston rod.

[0010] Preferably, the three groups of sliding grooves are distributed correspondingly to the clamping rods, the three groups of sliding blocks are all slidably connected to the mounting seats via the sliding grooves, and the sliding blocks are meshedly connected to the turntable via annular teeth.

[0011] Preferably, the driving wheel is rotatably connected to the base via a rotating shaft, the driving wheel is meshingly connected to the gear ring, and the driving wheel is connected to the output end of the second motor via the rotating shaft.

[0012] Preferably, both ends of the threaded rod respectively pass through the fixing frame and are rotatably connected to the fixing frame, the threaded rod passes through the adjusting rod and is threadedly connected to the adjusting rod, and the right end of the threaded rod is connected to the output end of the first motor.

[0013] The utility model provides a bearing maintenance clamping fixture with the following advantages:

[0014] 1. This bearing maintenance clamping fixture uses a mounting seat and three groups of annularly distributed clamping rods to fix the inner ring of the bearing during maintenance, avoiding the problem that the traditional clamping fixture does not fix the inner ring of the bearing firmly enough, resulting in the inner ring rotating synchronously with the outer ring during the bearing maintenance process, which affects the staff's judgment on the quality of the bearing; the cylinder drives the rack to slide, and the gear meshing with the rack drives the mounting shaft to rotate synchronously, and the mounting shaft drives the turntable and the annular gear to rotate. Under the limiting action of the slide groove, the slider and the clamping rod fixed on the slider are pushed in or out synchronously to adapt to the sizes of different bearing inner rings, until the three groups of clamping rods are in contact with the inner wall of the inner ring, and the inner ring of the bearing is firmly fixed, and the distance between the three groups of clamping rods can be adjusted according to actual needs, so that the clamping fixture can adapt to bearings with different inner diameters, expanding the scope of application of the fixture;

[0015] 2. This kind of clamping fixture for bearing maintenance uses a fixed frame and an adjusting rod to cooperate with a suction cup to fix the outer ring of the bearing, and drives the outer ring to rotate at a uniform speed under the action of the gear ring and the driving wheel, so as to maintain a uniform force on the outer ring. In the process of the inner ring being fixed and the outer ring rotating at a uniform speed, the staff can observe the quality condition of the bearing, and the distance of the adjusting rod on the fixed frame in the fixture can be adjusted according to the rotation degree of the threaded rod, so that the adjusting rod can cooperate with the suction cup to fix the outer ring of bearings of different sizes, which is convenient for the fixture to detect bearings of different models and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the mounting seat of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the turntable of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the fixing frame of the utility model;

[0021] Figure 5 For the utility model Figure 4 A magnified view of the structure at center.

[0022] Explanation of marks in the figure: 1. Base; 2. Mounting seat; 3. Inner ring; 4. Outer ring; 5. Turntable; 6. Ring gear; 7. Mounting shaft; 8. Gear; 9. Rack; 10. Cylinder; 11. Clamping rod; 12. Slider; 13. Slide groove; 14. Gear ring; 15. Driving wheel; 16. Fixed frame; 17. Adjusting rod; 18. Suction cup; 19. Threaded rod; 20. First motor; 21. Second motor. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a clamping fixture for bearing maintenance of the utility model in conjunction with the accompanying drawings.

[0029] like Figure 1-5As shown, the utility model is a clamping fixture for bearing maintenance, comprising a base 1, an inner ring 3 and an outer ring 4, a mounting seat 2 is arranged in the base 1, a turntable 5 is arranged in the mounting seat 2, the turntable 5 is rotatably connected to the mounting seat 2 through a mounting shaft 7, a gear 8 is sleeved on the mounting shaft 7, an annular gear 6 is arranged on the turntable 5, three groups of annularly distributed clamping rods 11 are arranged above the mounting seat 2, three groups of annularly distributed sliding grooves 13 are opened on the mounting seat 2, a slider 12 is fixedly installed below the clamping rod 11, the inner ring 3 is sleeved on the three groups of clamping rods 11 respectively, and the inner ring 3 is fixed during the bearing maintenance by the provided mounting seat 2 and the three groups of annularly distributed clamping rods 11, so as to avoid that the traditional clamping fixture is not firmly enough to fix the inner ring 3 of the bearing, resulting in the inner ring 3 rotating synchronously with the rotation of the outer ring 4 during the bearing maintenance process, which affects the staff's judgment on the bearing quality.

[0030] A fixing frame 16 is provided above the base 1, and the fixing frame 16 is slidably connected to the base 1. A gear ring 14 is provided in the base 1, and the gear ring 14 is fixedly connected to the fixing frame 16. A driving wheel 15 is provided in the base 1, and an adjusting rod 17 is provided in the fixing frame 16, and the adjusting rod 17 is slidably connected to the fixing frame 16. A threaded rod 19 is provided in the fixing frame 16, and a suction cup 18 is fixedly installed on one end of the adjusting rod 17 close to the outer ring 4. A first motor 20 is provided in the fixing frame 16, and a second motor 21 is provided in the base 1. The outer ring 4 of the bearing is adsorbed and fixed by the fixing frame 16 and the adjusting rod 17 in cooperation with the suction cup 18, and the outer ring 4 is driven to rotate at a uniform speed under the action of the gear ring 14 and the driving wheel 15, so as to keep a uniform force on the outer ring 4, and the quality condition of the bearing is checked by the staff during the process in which the inner ring 3 is fixed and the outer ring 4 rotates at a uniform speed.

[0031] A rack 9 is provided in the mounting seat 2, the rack 9 is slidably connected to the mounting seat 2, the rack 9 is meshed with a gear 8, a cylinder 10 is provided in the mounting seat 2, the rack 9 is connected to the output end of the piston rod of the cylinder 10, the rack 9 is driven to slide by the cylinder 10, and the gear 8 meshed with the rack 9 drives the mounting shaft 7 to rotate synchronously, and the mounting shaft 7 drives the turntable 5 and the annular gear 6 to rotate.

[0032] The three groups of slide grooves 13 are distributed correspondingly to the clamping rods 11, and the three groups of sliders 12 are all slidably connected to the mounting seat 2 through the slide grooves 13. The slider 12 is meshed with the turntable 5 through the annular teeth 6. Under the limiting action of the slide grooves 13, the slider 12 and the clamping rod 11 fixedly installed on the slider 12 are synchronously pushed in or out to adapt to the sizes of different bearing inner rings 3, until the three groups of clamping rods 11 are all in contact with the inner wall of the inner ring 3, and the bearing inner ring 3 is firmly fixed.

[0033] The driving wheel 15 is rotatably connected to the base 1 via a rotating shaft, the driving wheel 15 is meshedly connected to the gear ring 14, and the driving wheel 15 is connected to the output end of the second motor 21 via a rotating shaft. Under the action of the gear ring 14 and the driving wheel 15, the fixing frame 16, the adjusting rod 17 and the outer ring 4 are driven to rotate at a uniform speed, so as to maintain a uniform force on the outer ring 4.

[0034] Both ends of the threaded rod 19 respectively pass through the fixing frame 16 and are rotatably connected to the fixing frame 16, the threaded rod 19 passes through the adjusting rod 17 and is threadedly connected to the adjusting rod 17, and the right end of the threaded rod 19 is connected to the output end of the first motor 20. The threaded rod 19 is adjusted according to the rotation degree, so that the adjusting rod 17 can cooperate with the suction cup 18 to fix the outer ring 4 of bearings of different sizes, so that the fixture can detect bearings of different models and specifications.

[0035] The working principle of the clamping fixture for bearing maintenance is as follows: the rack 9 is driven to slide by the cylinder 10, and the gear 8 meshing with the rack 9 drives the installation shaft 7 to rotate synchronously, and the installation shaft 7 drives the turntable 5 and the annular gear 6 to rotate. Under the limiting effect of the slide groove 13, the slider 12 and the clamping rod 11 fixedly installed on the slider 12 are pushed in or out synchronously to adapt to the sizes of different bearing inner rings 3, until the three groups of clamping rods 11 are all in contact with the inner wall of the inner ring 3, the bearing inner ring 3 is firmly fixed, and the distance between the three groups of clamping rods 11 can be adjusted according to actual needs, so that the clamping fixture can adapt to bearings with different inner diameters, expand The application scope of the clamp is large. The outer ring 4 of the bearing is adsorbed and fixed by the fixed frame 16 and the adjusting rod 17 in cooperation with the suction cup 18, and the outer ring 4 is driven to rotate at a uniform speed under the action of the gear ring 14 and the driving wheel 15, so that a uniform force is applied to the outer ring 4. In the process where the inner ring 3 is fixed and the outer ring 4 rotates at a uniform speed, the staff will check the quality condition of the bearing. In addition, the distance between the adjusting rod 17 and the fixed frame 16 in the clamp can be adjusted according to the rotation degree of the threaded rod 19, so that the adjusting rod 17 can cooperate with the suction cup 18 to fix the outer ring 4 of bearings of different sizes, which is convenient for the clamp to detect bearings of different models and specifications.

[0036] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A bearing maintenance clamp, comprising a base (1), an inner ring (3) and an outer ring (4), characterized in that: The base (1) is provided with a mounting seat (2), the mounting seat (2) is provided with a turntable (5), the turntable (5) is rotatably connected to the mounting seat (2) via a mounting shaft (7), a gear (8) is sleeved on the mounting shaft (7), the turntable (5) is provided with an annular gear (6), three groups of annularly distributed clamping rods (11) are provided above the mounting seat (2), three groups of annularly distributed sliding grooves (13) are opened on the mounting seat (2), a slider (12) is fixedly installed below the clamping rod (11), and the inner ring (3) is sleeved on the three groups of clamping rods (11) respectively.

2. The bearing maintenance clamp according to claim 1, characterized in that: A fixing frame (16) is provided above the base (1), and the fixing frame (16) is slidably connected to the base (1). A gear ring (14) is provided in the base (1), and the gear ring (14) is fixedly connected to the fixing frame (16). A driving wheel (15) is provided in the base (1). An adjusting rod (17) is provided in the fixing frame (16), and the adjusting rod (17) is slidably connected to the fixing frame (16). A threaded rod (19) is provided in the fixing frame (16), and a suction cup (18) is fixedly installed at one end of the adjusting rod (17) close to the outer ring (4). A first motor (20) is provided in the fixing frame (16), and a second motor (21) is provided in the base (1).

3. The bearing maintenance clamp according to claim 1, characterized in that: A rack (9) is provided in the mounting seat (2), the rack (9) is slidably connected to the mounting seat (2), the rack (9) is meshingly connected to the gear (8), a cylinder (10) is provided in the mounting seat (2), and the rack (9) is connected to the output end of the piston rod of the cylinder (10).

4. The bearing maintenance clamp according to claim 1, characterized in that: The three groups of slide grooves (13) are distributed correspondingly to the clamping rod (11); the three groups of sliders (12) are all slidably connected to the mounting seat (2) through the slide grooves (13); and the sliders (12) are meshedly connected to the rotating disk (5) through the annular teeth (6).

5. The bearing maintenance clamp according to claim 2, characterized in that: The driving wheel (15) is rotatably connected to the base (1) via a rotating shaft, the driving wheel (15) is meshingly connected to the gear ring (14), and the driving wheel (15) is connected to the output end of the second motor (21) via the rotating shaft.

6. The bearing maintenance clamp according to claim 2, characterized in that: The two ends of the threaded rod (19) respectively penetrate the fixing frame (16) and are rotatably connected to the fixing frame (16); the threaded rod (19) penetrates the adjusting rod (17) and is threadedly connected to the adjusting rod (17); and the right end of the threaded rod (19) is connected to the output end of the first motor (20).

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