A clamping mechanism for overhauling a bearing housing

Abstract

The present invention provides a clamping mechanism for overhauling a bearing housing, which relates to a machine tool for overhaul. The clamping mechanism for overhauling the bearing housing includes: a support, on the upper surface of which there is a groove; a clamping seat, which is slidably arranged in the groove; a height self-adaptive mechanism, which includes a first spring, and both ends of the first spring respectively abut against the opposite surfaces of the groove and the clamping seat. The application cleverly utilizes the elastic characteristics of the height self-adaptive mechanism, enabling the clamping seat to automatically adjust its position according to the size and weight of the bearing housing. Within a certain range, regardless of the size of the bearing housing, the clamping component in the inner clamping mechanism can always maintain stable abutment against the inner wall of the middle part of the inner ring, further improving the clamping accuracy and stability.

Description

Technical Field

[0001] The present invention relates to a maintenance machine tool, and more particularly to a clamping mechanism for maintaining a bearing seat. Background Art

[0002] In industrial production, as an important component of mechanical equipment, the stability and accuracy of the bearing seat are crucial for the overall operating performance of the equipment. However, during the use of the bearing seat, it often fails or its performance deteriorates due to various reasons (such as wear, aging, uneven stress, etc.), and at this time, it needs to be maintained or replaced.

[0003] When most traditional clamping mechanisms face bearing seats of different sizes, the clamping force is often difficult to be evenly distributed. Especially for large-sized bearing seats, traditional fixtures often cannot provide sufficient clamping force, resulting in easy shaking or displacement of the bearing seat during maintenance, and poor stability of the bearing seat during maintenance. Summary of the Invention

[0004] To solve the above problems, the present invention provides a clamping mechanism for maintaining a bearing seat.

[0005] The present invention provides a clamping mechanism for maintaining a bearing seat, including: a support, a groove is provided on the upper surface of the support; a clamping seat, the clamping seat is slidably arranged in the groove; a height adaptive mechanism, the height adaptive mechanism includes a first spring, and two ends of the first spring respectively abut against the opposite surfaces of the groove and the clamping seat; an inner tightening mechanism, the inner tightening mechanism includes a support rod and a plurality of tightening components, one end of the support rod is connected to the support, the other end of the support rod passes vertically above the clamping seat and is connected to the plurality of tightening components, and the tightening components are used for abutting against the inner ring of the bearing seat; an outer clamping mechanism, the outer clamping mechanism is arranged on the support, and the outer clamping mechanism is used for abutting against the outer ring of the bearing seat.

[0006] Optionally, the tightening component is set as a pneumatic pushing unit. When the first spring is compressed, the height adaptive mechanism is used to supply air to the tightening component so that the tightening component abuts against the inner ring of the bearing seat.

[0007] Optionally, the height adaptive mechanism further includes a first cylinder body, a first piston and a connecting rod. The first cylinder body is connected inside the support, and the top of the first cylinder body is of an open structure. The first piston is slidably connected to the inner wall of the first cylinder body. One end of the support rod is connected to the inner bottom surface of the first cylinder body, and the other end of the support rod sequentially slides through the first piston and the clamping seat and is used for connecting with the pneumatic pushing unit. One ends of the plurality of connecting rods are connected to the lower surface of the clamping seat, and the other ends of the plurality of connecting rods are connected to the first piston.

[0008] Optionally, the pneumatic pushing unit includes a second cylinder body, a second piston, a second spring, a pressing block and a push rod. Both ends of the second cylinder body are provided with sealing structures. The second cylinder body is connected to the corresponding end of the support rod. The second piston is slidably connected to the second cylinder body. One end of the push rod is connected to the second piston, and the other end of the push rod passes through the second cylinder body and is connected to the pressing block. The second spring is sleeved on the push rod, and both ends of the second spring respectively abut against the inner end surface of the second cylinder body away from the support rod and the corresponding surface of the second piston. An exhaust hole is provided at one end of the second cylinder body away from the support rod. When the first piston moves downward, the second piston is used to move in a direction away from the support rod so that the pressing block abuts against the inner ring of the bearing seat.

[0009] Optionally, an air passage is provided in the support rod. One end of the air passage communicates with the bottom end of the support rod, and the other end of the air passage communicates with one end of the second cylinder body close to the support rod.

[0010] Optionally, the extending direction of the second cylinder body is arranged along the radial direction of the clamping seat.

[0011] Optionally, a plurality of the connecting rods are arranged in a circumferential direction around the support rod, and the first spring is arranged in a circumferential direction around the plurality of connecting rods.

[0012] Optionally, the inner pressing mechanism further includes a connecting pipe, and the connecting pipe communicates the plurality of second cylinder bodies with each other.

[0013] Optionally, the outer clamping mechanism includes a plurality of circumferential clamping units arranged along the circumferential direction of the clamping seat. The circumferential clamping unit includes a cylinder and a clamping block. The cylinder is connected to the support, and the output end of the cylinder is connected to the clamping block.

[0014] Optionally, a through groove arranged along the radial direction is provided on the clamping seat, and the clamping block is slidably arranged in the through groove.

[0015] The beneficial effects of the clamping mechanism for bearing housing maintenance in the present invention are as follows: During maintenance, the bearing housing to be maintained is placed on the clamping seat. Thanks to the setting of the height self - adapting mechanism, when the clamping seat bears the bearing housing, it will press down the first spring, causing the clamping seat to move downward below the groove. After the clamping seat stabilizes, the inner pressing mechanism and the outer clamping mechanism are respectively pressed against the inner ring and the outer ring of the bearing housing, achieving the effect of clamping the bearing housing inside and outside, improving the stability of the bearing housing during the maintenance process. At the same time, the larger the size of the bearing housing, the greater the height of the inner ring and the greater the weight of the bearing housing, resulting in a greater downward movement distance of the clamping seat. Since the pressing component is connected to the support rod, the height of the pressing component always remains unchanged, so that the pressing component can press against the inner wall of the middle part of the inner ring. On the contrary, the smaller the size of the bearing housing, the smaller the height of the inner ring and the smaller the weight of the bearing housing, resulting in a smaller downward movement distance of the clamping seat. Similarly, the pressing component can press against the inner wall of the middle part of the inner ring. Cleverly utilizing the elastic characteristics of the height self - adapting mechanism, the clamping seat can automatically adjust its position according to the size and weight of the bearing housing. Within a certain range, regardless of the size of the bearing housing, the pressing component in the inner pressing mechanism can always stably press against the inner wall of the middle part of the inner ring, further improving the clamping accuracy and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the clamping mechanism for bearing housing maintenance in an embodiment of the present invention;

[0017] Figure 2 is a top view of the clamping mechanism for bearing housing maintenance in an embodiment of the present invention;

[0018] Figure 3 is Figure 2 a C - C cross - sectional view in

[0019] Figure 4 is a schematic position diagram when the bearing housing is centered in the clamping mechanism for bearing housing maintenance in an embodiment of the present invention;

[0020] Figure 5 is Figure 4 an enlarged view of the structure at A in

[0021] Figure 6 is a schematic position diagram when the bearing housing moves to the right in the clamping mechanism for bearing housing maintenance in an embodiment of the present invention;

[0022] Figure 7 is Figure 6 an enlarged view of the structure at B in

[0023] Description of the reference numerals: 1, support; 11, groove; 2, clamping seat; 21, through groove; 3, height adaptive mechanism; 31, first cylinder; 32, first piston; 34, first spring; 35, connecting rod; 4, inner pressing mechanism; 41, support rod; 411, air passage; 42, connecting pipe; 43, pressing member; 431, second cylinder; 432, second piston; 433, second spring; 434, pressing block; 5, outer clamping mechanism; 51, cylinder; 52, clamping block; 100, bearing seat; 110, inner ring; 120, outer ring. Detailed implementation manners

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] In the description of this specification, the descriptions with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily", and "one embodiment" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or embodiment are included in at least one embodiment or embodiment of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or embodiments.

[0027] The terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

[0028] An embodiment of the present invention provides a clamping mechanism for overhauling a bearing housing, including: a support 1, on the upper surface of which there is a groove 11; a clamping seat 2, which is slidably arranged in the groove 11; a height self - adapting mechanism 3, the height self - adapting mechanism 3 includes a first spring 34, and two ends of the first spring 34 respectively abut against the opposite surfaces of the groove 11 and the clamping seat 2; an inner tightening mechanism 4, the inner tightening mechanism 4 includes a support rod 41 and a plurality of tightening components 43, one end of the support rod 41 is connected to the support 1, the other end of the support rod 41 passes vertically above the clamping seat 2 and is connected to the plurality of tightening components 43, and the tightening components 43 are used to abut against the inner ring 110 of the bearing housing 100; an outer clamping mechanism 5, the outer clamping mechanism 5 is arranged on the support 1, and the outer clamping mechanism 5 is used to abut against the outer ring 120 of the bearing housing 100.

[0029] It should be noted that generally speaking, the larger the size of the bearing housing 100, the larger the radii of the outer ring 120 and the inner ring 110 of the bearing housing 100, and the higher the overall height of the bearing housing 100. The overhaul of the bearing housing 100 generally includes appearance inspection, dimension inspection, etc. For example, in appearance inspection, it is necessary to ensure that the surface of the bearing housing 100 is flat and smooth, without cracks, scars and air holes, and there should be no deformation or unevenness. The inner ring 110 of the bearing housing 100 should be a perfect circle, the hole wall should be flat, and the surface should have no scratches; in dimension inspection, it is necessary to measure the outer diameter of the outer ring 120 to check whether it meets the specifications, whether it is too large or too small, measure the inner diameter of the inner ring 110, and judge whether its precision meets the standard requirements.

[0030] In this optional embodiment, combined with Figure 1 、 Figure 2 and Figure 3As shown, during maintenance, the bearing housing 100 to be maintained is placed on the clamping seat 2. Thanks to the setting of the height adaptive mechanism 3, after the clamping seat 2 bears the bearing housing 100, it will press down the first spring 34, causing the clamping seat 2 to move downward below the groove 11. After the clamping seat 2 is stable, the inner tightening mechanism 4 and the outer clamping mechanism 5 are respectively abutted against the inner ring 110 and the outer ring 120 of the bearing housing 100, achieving the effect of clamping the bearing housing 100 inside and outside, improving the stability of the bearing housing 100 during the maintenance process. At the same time, the larger the size of the bearing housing 100, the greater the height of the inner ring 110, and the greater the weight of the bearing housing 100, resulting in a greater downward movement distance of the clamping seat 2. Since the tightening component 43 is connected to the support rod 41, the height of the tightening component 43 always remains unchanged, so that the tightening component 43 can abut against the inner wall of the middle part of the inner ring 110. On the contrary, the smaller the size of the bearing housing 100, the smaller the height of the inner ring 110, and the smaller the weight of the bearing housing 100, resulting in a smaller downward movement distance of the clamping seat 2. Similarly, the tightening component 43 can abut against the inner wall of the middle part of the inner ring 110, making clever use of the elastic characteristics of the height adaptive mechanism 3, enabling the clamping seat 2 to automatically adjust its position according to the size and weight of the bearing housing 100. Within a certain range, regardless of the size of the bearing housing 100, the tightening component 43 in the inner tightening mechanism 4 can always stably abut against the inner wall of the middle part of the inner ring 110, further improving the clamping accuracy and stability.

[0031] Furthermore, the tightening component 43 is set as a pneumatic pushing unit. When the first spring 34 is compressed, the height adaptive mechanism 3 is used to supply air to the tightening component 43 so that the tightening component 43 abuts against the inner ring 110 of the bearing housing 100.

[0032] Optionally, the height adaptive mechanism 3 further includes a first cylinder body 31, a first piston 32 and a connecting rod 35. The first cylinder body 31 is connected to the support 1, and the top of the first cylinder body 31 is an open structure. The first piston 32 is slidably connected to the inner wall of the first cylinder body 31. One end of the support rod 41 is connected to the inner bottom surface of the first cylinder body 31, and the other end of the support rod 41 sequentially slides through the first piston 32 and the clamping seat 2 and is used to connect to the pneumatic pushing unit. One ends of a plurality of connecting rods 35 are connected to the lower surface of the clamping seat 2, and the other ends of the plurality of connecting rods 35 are connected to the first piston 32.

[0033] Further, the pneumatic pushing unit includes a second cylinder body 431, a second piston 432, a second spring 433, a pressing block 434 and a push rod. Both ends of the second cylinder body 431 are provided with sealing structures. The second cylinder body 431 is connected to the corresponding end of the support rod 41. The second piston 432 is slidably connected to the second cylinder body 431. One end of the push rod is connected to the second piston 432, and the other end of the push rod passes through the second cylinder body 431 and is connected to the pressing block 434. The second spring 433 is sleeved on the push rod, and both ends of the second spring 433 are respectively abutted against the inner end surface of the second cylinder body 431 away from the support rod 41 and the corresponding surface of the second piston 432. An exhaust hole is provided at one end of the second cylinder body 431 away from the support rod 41. When the first piston 32 moves downward, the second piston 432 is used to move in a direction away from the support rod 41, so that the pressing block 434 abuts against the inner ring 110 of the bearing seat 100.

[0034] Further, an air passage 411 is provided in the support rod 41. One end of the air passage 411 communicates with the bottom end of the support rod 41, and the other end of the air passage 411 communicates with one end of the second cylinder body 431 close to the support rod 41.

[0035] In this alternative embodiment, in combination with Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 as shown, the larger the size of the bearing seat 100, the larger the radius of the inner ring 110, the greater the weight of the bearing seat 100, and the greater the distance that the clamping seat 2 moves downward. As a result, the greater the distance that the first piston 32 is pressed downward, causing more gas to be sent into the second cylinder body 431 through the air passage 411, the longer the distance that the second piston 432 moves, and the pressing block 434 can abut against the inner wall of the inner ring 110. On the contrary, the smaller the size of the bearing seat 100, the smaller the radius of the inner ring 110, the smaller the weight of the bearing seat 100, and the smaller the distance that the clamping seat 2 moves downward. As a result, the smaller the distance that the first piston 32 is pressed downward, causing less gas to be sent into the second cylinder body 431 through the air passage 411, the shorter the distance that the second piston 432 moves, and the pressing block 434 can also abut against the inner wall of the inner ring 110. In this way, within a certain range, the pneumatic pushing unit can adaptively adjust according to the change in the size of the bearing seat 100, so that the pressing block 434 always maintains a reasonable pressure on the inner wall of the inner ring 110, avoiding the damage problem caused by excessive pressure of the pressing block 434 on the inner wall of the inner ring 110 and also avoiding the problem of poor stability caused by too small pressure of the pressing block 434 on the inner wall of the inner ring 110.

[0036] Since the pressing member 43 is connected to the support rod 41, the height of the pressing member 43 always remains unchanged, so that the pressing member 43 can abut against the inner wall of the middle part of the inner ring 110. On the contrary, the smaller the size of the bearing housing 100, the smaller the height of the inner ring 110 and the weight of the bearing housing 100, resulting in a smaller downward movement distance of the clamping seat 2, and also enabling the pressing member 43 to abut against the middle inner wall of the inner ring 110.

[0037] Further, the extending direction of the second cylinder body 431 is arranged along the radial direction of the clamping seat 2.

[0038] In this alternative embodiment, combined with Figure 5 and Figure 7 As shown, by setting the extending direction of the second cylinder body 431 to the radial direction of the clamping seat 2, that is to say, during maintenance, the extending direction of the second cylinder body 431 is along the radial direction of the inner ring 110, so that the movement direction of the push rod is also along the radial direction, thereby increasing the acting force of the pressing block 434 on the inner wall of the inner ring 110 and further improving the stability during maintenance.

[0039] Optionally, a plurality of connecting rods 35 are arranged around the circumference of the support rod 41, and the first spring 34 is arranged around the circumference of the plurality of connecting rods 35.

[0040] In this alternative embodiment, combined with Figure 4 and Figure 6 As shown, the plurality of connecting rods 35 can play a role in limiting the first spring 34 and improve the stability of the first spring 34 when it is compressed or rebounds.

[0041] Further, the inner pressing mechanism 4 further includes a connecting pipe 42, and the connecting pipe 42 connects the plurality of second cylinder bodies 431 to each other.

[0042] It should be noted that since the outer clamping mechanism 5 abuts against the outer ring 120 of the bearing housing 100, when inspecting the surface of the outer ring 120, the outer clamping mechanism 5 blocks the corresponding surface position of the outer ring 120. At this time, it is necessary to make the outer clamping mechanism 5 leave the corresponding surface position of the outer ring 120, but this will affect the stability of the bearing housing 100 during subsequent maintenance.

[0043] In this alternative embodiment, as Figure 5 shown, at this time, the advancing positions of the left and right second pistons 432 in their respective second cylinder bodies 431 are the same, that is to say, the bearing housing 100 is in the centered position. When a slight displacement of the bearing housing 100 occurs during maintenance, for example, the bearing housing 100 moves to the right as a whole, as Figure 6As shown, at this time, due to the air pressure in the air leakage channel 411, the left inner wall of the inner ring 110 will exert a force on the left push rod, pushing the second piston 432 in the second cylinder 431 on the left to move to the right. As a result, the air in the second cylinder 431 on the left is sent into the second cylinder 431 on the right through the connecting pipe 42, pushing the second piston 432 on the right to move to the right. Furthermore, the push rod on the right pushes the right abutting block 434 to abut against the left inner wall of the inner ring 110. In this way, on the one hand, the left abutting block 434 can relieve part of the force on the left inner wall of the inner ring 110, avoiding rigid damage to the left inner wall of the inner ring 110. On the other hand, the right abutting block 434 can abut against the right inner wall of the inner ring 110, continuing to maintain the abutting force on it, and then checking the stability of the bearing seat 100 when inspecting the surface of the outer ring 120.

[0044] Optionally, the outer clamping mechanism 5 includes a plurality of circumferential clamping units arranged circumferentially along the clamping seat 2. The circumferential clamping unit includes a cylinder 51 and a clamping block 52. The cylinder 51 is connected to the support 1, and the output end of the cylinder 51 is connected to the clamping block 52.

[0045] In this alternative embodiment, the cylinder 51 is installed on the support 1 by bolts, and the output end of the cylinder 51 is fixed to the clamping block 52 by bolts. The cylinder 51 drives the clamping block 52 to move, thereby realizing the clamping of the outer ring 120 of the bearing seat 100, and then improving the stability of the bearing seat 100 during maintenance.

[0046] Furthermore, the clamping seat 2 is provided with a through groove 21 arranged radially, and the clamping block 52 is slidably arranged in the through groove 21.

[0047] In this alternative embodiment, in combination with Figure 1 As shown, the size of the through groove 21 is adapted to the clamping block 52, which can play a role in limiting and guiding the movement of the clamping block 52, thereby improving the clamping accuracy of the clamping block 52. And when the clamping seat 2 moves up and down, the arrangement of the through groove 21 will not cause the clamping block 52 to interfere with the clamping seat 2.

[0048] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A clamping mechanism for bearing housing maintenance, characterized in that, Comprising: A support (1), on the upper surface of which there is a groove (11); A clamping seat (2), which is slidably arranged in the groove (11); A height self - adapting mechanism (3), the height self - adapting mechanism (3) includes a first spring (34), and two ends of the first spring (34) respectively abut against the opposite surfaces of the groove (11) and the clamping seat (2); An inner pressing mechanism (4), the inner pressing mechanism (4) includes a support rod (41) and a plurality of pressing components (43), one end of the support rod (41) is connected to the support (1), the other end of the support rod (41) passes vertically above the clamping seat (2) and is connected to the plurality of pressing components (43), and the pressing components (43) are used to abut against the inner ring (110) of the bearing seat (100); An outer clamping mechanism (5), the outer clamping mechanism (5) is arranged on the support (1), and the outer clamping mechanism (5) is used to abut against the outer ring (120) of the bearing seat (100); The pressing component (43) is set as a pneumatic pushing unit, when the first spring (34) is compressed, the height self - adapting mechanism (3) is used to supply air to the pressing component (43), so that the pressing component (43) abuts against the inner ring (110) of the bearing seat (100); The height self - adapting mechanism (3) further includes a first cylinder body (31), a first piston (32) and a connecting rod (35), the first cylinder body (31) is connected inside the support (1), and the top of the first cylinder body (31) is an open structure, the first piston (32) is slidably connected to the inner wall of the first cylinder body (31), one end of the support rod (41) is connected to the inner bottom surface of the first cylinder body (31), the other end of the support rod (41) sequentially slides through the first piston (32) and the clamping seat (2) and is used to be connected to the pneumatic pushing unit, one ends of the plurality of connecting rods (35) are connected to the lower surface of the clamping seat (2), and the other ends of the plurality of connecting rods (35) are connected to the first piston (32); The pneumatic pushing unit includes a second cylinder body (431), a second piston (432), a second spring (433), a pressing block (434) and a push rod. Both ends of the second cylinder body (431) are provided with sealing structures. The second cylinder body (431) is connected to the corresponding end of the support rod (41). The second piston (432) is slidably connected to the second cylinder body (431). One end of the push rod is connected to the second piston (432), and the other end of the push rod passes through the second cylinder body (431) and is connected to the pressing block (434). The second spring (433) is sleeved on the push rod, and both ends of the second spring (433) respectively abut against the inner end face of the second cylinder body (431) away from the support rod (41) and the corresponding face of the second piston (432). An exhaust hole is provided at one end of the second cylinder body (431) away from the support rod (41). When the first piston (32) moves downward, the second piston (432) is used to move in a direction away from the support rod (41) so that the pressing block (434) abuts against the inner ring (110) of the bearing seat (100). The inner pressing mechanism (4) further includes a connecting pipe (42), and the connecting pipe (42) communicates multiple second cylinder bodies (431) with each other.

2. The clamping mechanism for overhauling the bearing housing according to claim 1, characterized in that, An air passage (411) is provided in the support rod (41). One end of the air passage (411) communicates with the bottom end of the support rod (41), and the other end of the air passage (411) communicates with one end of the second cylinder body (431) close to the support rod (41).

3. The clamping mechanism for overhauling the bearing housing according to claim 1, characterized in that, The extending direction of the second cylinder body (431) is arranged along the radial direction of the clamping seat (2).

4. The clamping mechanism for overhaul of the bearing housing according to claim 1, characterized in that, Multiple connecting rods (35) are arranged in a ring around the circumference of the support rod (41), and the first spring (34) is arranged around the circumference of multiple connecting rods (35).

5. The clamping mechanism for overhauling a bearing housing according to any one of claims 1-4, characterized in that, The outer clamping mechanism (5) includes a plurality of circumferential clamping units arranged along the circumferential direction of the clamping seat (2). The circumferential clamping unit includes a cylinder (51) and a clamping block (52). The cylinder (51) is connected to the support (1), and the output end of the cylinder (51) is connected to the clamping block (52).

6. The clamping mechanism for overhauling the bearing housing according to claim 5, characterized in that, A through groove (21) arranged along the radial direction is provided on the clamping seat (2), and the clamping block (52) is slidably arranged in the through groove (21).

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