Press fitting device for assembling needle roller bearing

Abstract

The utility model relates to the technical field of needle roller bearing assembly, and disclose a press -fitting device for needle roller bearing assembly, including work table, the work table top is provided with press -fitting mechanism, the work table bottom is provided with elevating system, the press -fitting mechanism includes support assembly, press -fitting assembly and drive assembly no.

Description

Technical Field

[0001] This utility model relates to the field of needle roller bearing assembly technology, specifically to a press-fitting device for assembling needle roller bearings. Background Technology

[0002] Needle roller bearings are roller bearings with cylindrical rollers that are both thin and long relative to their diameter. These rollers are called needles. Despite their small cross-section, the bearings still have a high load-carrying capacity. Needle roller bearings, with their thin and long rollers, have a compact radial structure. They have the smallest outer diameter when their inner diameter and load capacity are the same as other types of bearings, making them particularly suitable for support structures where radial installation dimensions are limited. Depending on the application, bearings without inner rings or needle roller and cage assemblies can be selected. In this case, the journal surface and housing bore surface that mate with the bearing directly serve as the inner and outer rolling surfaces of the bearing. To ensure the same load capacity and operating performance as bearings with rings, the hardness, machining accuracy, and surface quality of the raceway surface of the shaft or housing bore should be similar to those of the bearing rings. This type of bearing can only withstand radial loads.

[0003] Existing needle roller bearing assembly equipment has significant drawbacks in use: First, traditional equipment often uses a fixed-height worktable, which is difficult to adapt to the height differences of different specifications of equipment to be assembled. Manual handling or raising the equipment is inefficient and poses a safety hazard of equipment slippage, failing to meet the needs of rapid switching in diverse assembly scenarios. Second, the press head has a fixed size and can only be used for needle roller bearings with a single inner diameter. When changing bearings of different specifications, the press head needs to be frequently disassembled and replaced, which is time-consuming and labor-intensive. Furthermore, dimensional deviations can easily lead to misalignment between the bearing and the equipment hole, causing assembly misalignment or jamming, affecting assembly accuracy and efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a press-fitting device for assembling needle roller bearings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressing device for assembling needle roller bearings, including a worktable, a pressing mechanism on the top of the worktable, and a lifting mechanism on the bottom of the worktable.

[0006] The pressing mechanism includes a support component, a pressing component, and a drive component. The support component is located on the top of the workbench, the pressing component is located inside the support component, and the drive component is located on the left and right sides of the support component.

[0007] The lifting mechanism includes a lifting component and a second drive component. The lifting component is located at the bottom of the worktable, and the second drive component is located inside the lifting component.

[0008] Preferably, the support assembly includes a slot, which is located in the middle of the top of the workbench. A frame plate is fixedly connected to the top of the workbench on the left and right sides of the slot. A slide rod is slidably connected inside the frame plate. A slide plate is fixedly connected to the left and right sides of the slide rod. The slide plate is slidably connected to the inner side of the frame plate.

[0009] Preferably, the pressing assembly includes a fixed arm, which is fixedly connected to the outer ring of the slide bar, and a pressing block is fixedly connected to the bottom of the fixed arm.

[0010] Preferably, the drive assembly includes an electric cylinder, which is fixedly connected to the bottom of the workbench. A telescopic rod is fixedly connected to the top of the electric cylinder, and a connecting plate is fixedly connected to the top of the telescopic rod. The connecting plate is fixedly connected to the outside of the slide plate.

[0011] Preferably, the lifting assembly includes a slide cylinder, which is fixedly connected to the bottom of the worktable. A slider is slidably connected to the inner ring of the slide cylinder, and a telescopic support leg is fixedly connected to the bottom of the slider. The telescopic support leg is slidably connected to the bottom of the slide cylinder, and a pad is fixedly connected to the bottom of the telescopic support leg.

[0012] Preferably, the second drive assembly includes a second electric cylinder, which is fixedly connected to the top of the workbench. A second telescopic rod is fixedly connected to the bottom of the second electric cylinder. A connecting block is fixedly connected to the bottom of the second telescopic rod. A connecting rod is fixedly connected to the bottom of the connecting block. The connecting rod is fixedly connected to the inner side of the outer ring of the telescopic outrigger.

[0013] Compared with the prior art, the present invention provides a press-fitting device for assembling needle roller bearings, which has the following advantages: 1. This needle roller bearing assembly press-fitting device, through the set press-fitting mechanism, only requires the operator to activate the electric cylinders on both sides to drive the press block downwards. The press block applies downward pressure to the needle roller bearing, completing the press-fitting process. At the same time, the outer ring of the press block gradually decreases in diameter from top to bottom, so that the press block can be adapted to needle roller bearings with different inner diameters when the device is used, increasing the applicability of the device.

[0014] 2. The press-fitting device for needle roller bearing assembly, through the set lifting mechanism, allows the operator to control the telescopic outriggers to extend and retract within the slide tube by simply activating the two electric cylinders on both sides. This facilitates the operator to adjust the horizontal height of the workbench, enabling the device to perform press-fitting of needle roller bearings for devices of different heights. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a front view of the present utility model; Figure 2 Schematic diagram of the pressing mechanism Figure 1 ; Figure 3 Schematic diagram of the pressing mechanism Figure 2 ; Figure 4 This is a schematic diagram of the lifting mechanism. Figure 5 This is a partial structural cross-sectional view of the lifting mechanism.

[0016] In the diagram: 1. Pressing mechanism; 11. Support assembly; 1101. Empty slot; 1102. Frame plate; 1103. Slide rod; 1104. Slide plate; 12. Pressing assembly; 1201. Fixed arm; 1202. Pressing block; 13. Drive assembly one; 1301. Electric cylinder one; 1302. Telescopic rod one; 1303. Connecting plate; 2. Lifting mechanism; 21. Lifting assembly; 2101. Slide cylinder; 2102. Slider; 2103. Telescopic support leg; 2104. Pad block; 22. Drive assembly two; 2201. Electric cylinder two; 2202. Telescopic rod two; 2203. Connecting block; 2204. Connecting rod; 3. Workbench. Detailed Implementation

[0017] 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 protection scope of the present utility model.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] This utility model provides a technical solution: Example 1: Combining Figures 1 to 3 A press-fitting device for assembling needle roller bearings includes a worktable 3, a press-fitting mechanism 1 on the top of the worktable 3, and a lifting mechanism 2 on the bottom of the worktable 3.

[0020] The pressing mechanism 1 includes a support component 11, a pressing component 12, and a drive component 13. The support component 11 is located on the top of the workbench 3, the pressing component 12 is located inside the support component 11, and the drive component 13 is located on the left and right sides of the support component 11.

[0021] The support assembly 11 includes a slot 1101, which is located in the middle of the top of the workbench 3. A frame plate 1102 is fixedly connected to the top of the workbench 3 on the left and right sides of the slot 1101. A slide rod 1103 is slidably connected inside the frame plate 1102. A slide plate 1104 is fixedly connected to the left and right sides of the slide rod 1103. The slide plate 1104 is slidably connected to the inner side of the frame plate 1102. The pressing assembly 12 includes a fixed arm 1201, which is fixedly connected to the outer ring of the slide rod 1103. A pressure block 1202 is fixedly connected to the bottom of the fixed arm 1201. The drive assembly 13 includes an electric cylinder 1301, which is fixedly connected to the bottom of the workbench 3. A telescopic rod 1302 is fixedly connected to the top of the electric cylinder 1301. A connecting plate 1303 is fixedly connected to the top of the telescopic rod 1302. The connecting plate 1303 is fixedly connected to the outer side of the slide plate 1104.

[0022] Furthermore, the operator only needs to activate the electric cylinders 1301 on both sides to drive the pressure block 1202 downward. The pressure block 1202 applies downward pressure to the needle roller bearing, completing the pressing process of the needle roller bearing. At the same time, the outer ring of the pressure block 1202 gradually decreases in diameter from top to bottom, so that the pressure block 1202 can be adapted to needle roller bearings with different inner diameters when the device is used, increasing the applicability of the device.

[0023] Example 2: See Figure 1 , Figure 4 and Figure 5 Furthermore, based on Embodiment 1, the lifting mechanism 2 includes a lifting component 21 and a second driving component 22. The lifting component 21 is disposed at the bottom of the workbench 3, and the second driving component 22 is disposed inside the lifting component 21.

[0024] The lifting assembly 21 includes a slide cylinder 2101, which is fixedly connected to the bottom of the worktable 3. A slider 2102 is slidably connected to the inner ring of the slide cylinder 2101. A telescopic support leg 2103 is fixedly connected to the bottom of the slider 2102. The telescopic support leg 2103 is slidably connected to the bottom of the slide cylinder 2101. A pad block 2104 is fixedly connected to the bottom of the telescopic support leg 2103. The drive assembly 22 includes an electric cylinder 2201, which is fixedly connected to the top of the worktable 3. A telescopic rod 2202 is fixedly connected to the bottom of the electric cylinder 2201. A connecting block 2203 is fixedly connected to the bottom of the telescopic rod 2202. A connecting rod 2204 is fixedly connected to the bottom of the connecting block 2203. The connecting rod 2204 is fixedly connected to the inner side of the outer ring of the telescopic support leg 2103.

[0025] Furthermore, when using this device, the operator only needs to activate the electric cylinders 2201 on both sides to control the telescopic outriggers 2103 to extend and retract within the slide cylinder 2101, which facilitates the operator to adjust the horizontal height of the workbench 3. This allows the device to be used for press-fitting needle roller bearings for devices of different heights.

[0026] In actual operation, when this device is used and needle roller bearings need to be press-fitted, the equipment to be installed with the needle roller bearings is first placed under the workbench 3. Then, the operator starts the electric cylinders 2201 on both sides. The electric cylinders 2201 start to control the telescopic rods 2202 to extend and retract. The extension and retraction of the telescopic rods 2202 drives the connecting rods 2204 to move up and down through the connecting block 2203. The up and down movement of the connecting rods 2204 drives the telescopic legs 2103 on both sides to slide up and down in the slide cylinder 2101. During the up and down movement of the telescopic legs 2103, the bottom of the pad 2104 always remains in contact with the ground. The horizontal height of the workbench 3 is adjusted by the sliding of the telescopic legs 2103, so that the bottom of the workbench 3 and the installation position of the needle roller bearings on the surface of the equipment are kept in a suitable position. Then, the worker places the needle roller bearing on the top of the equipment to be installed. After that, the worker activates the electric cylinders 1301 on both sides. The activation of electric cylinder 1301 drives the slide plate 1104 downward through the telescopic rod 1302 and the connecting plate 1303. The downward movement of slide plate 1104 drives the pressure block 1202 downward through the slide rod 1103 and the fixed arm 1201. The pressure block 1202 moves downward and engages with the top of the needle roller bearing. Then, the pressure block 1202 continues to move downward, pressing the needle roller bearing downward and engaging it in the equipment. At this point, the installation of the needle roller bearing is completed.

[0027] 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 terms "comprising," "including," or any other variations thereof are 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. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A press-fitting device for assembling needle roller bearings, comprising a worktable (3), characterized in that: The workbench (3) is provided with a pressing mechanism (1) at the top and a lifting mechanism (2) at the bottom. The pressing mechanism (1) includes a support component (11), a pressing component (12) and a drive component (13). The support component (11) is located on the top of the workbench (3), the pressing component (12) is located inside the support component (11), and the drive component (13) is located on the left and right sides of the support component (11). The support assembly (11) includes a slot (1101), which is located in the middle of the top of the workbench (3). A frame plate (1102) is fixedly connected to the top of the workbench (3) on the left and right sides of the slot (1101). A slide rod (1103) is slidably connected inside the frame plate (1102). A slide plate (1104) is fixedly connected to the left and right sides of the slide rod (1103). The slide plate (1104) is slidably connected to the inner side of the frame plate (1102). The pressing assembly (12) includes a fixed arm (1201), which is fixedly connected to the outer ring of the slide bar (1103), and a pressure block (1202) is fixedly connected to the bottom of the fixed arm (1201). The lifting mechanism (2) includes a lifting component (21) and a second drive component (22). The lifting component (21) is located at the bottom of the workbench (3), and the second drive component (22) is located inside the lifting component (21). The lifting assembly (21) includes a slide cylinder (2101), which is fixedly connected to the bottom of the workbench (3). A slider (2102) is slidably connected to the inner ring of the slide cylinder (2101). A telescopic support leg (2103) is fixedly connected to the bottom of the slider (2102). The telescopic support leg (2103) is slidably connected to the bottom of the slide cylinder (2101). A pad (2104) is fixedly connected to the bottom of the telescopic support leg (2103).

2. The press-fitting device for assembling needle roller bearings according to claim 1, characterized in that: The drive assembly (13) includes an electric cylinder (1301), which is fixedly connected to the bottom of the workbench (3). A telescopic rod (1302) is fixedly connected to the top of the electric cylinder (1301), and a connecting plate (1303) is fixedly connected to the top of the telescopic rod (1302). The connecting plate (1303) is fixedly connected to the outside of the slide plate (1104).

3. The press-fitting device for assembling needle roller bearings according to claim 1, characterized in that: The second drive assembly (22) includes a second electric cylinder (2201), which is fixedly connected to the top of the workbench (3), and a second telescopic rod (2202) is fixedly connected to the bottom of the second electric cylinder (2201).

4. The press-fitting device for assembling needle roller bearings according to claim 3, characterized in that: The bottom of the telescopic rod (2202) is fixedly connected to a connecting block (2203), the bottom of the connecting block (2203) is fixedly connected to a connecting rod (2204), and the connecting rod (2204) is fixedly connected to the inner side of the outer ring of the telescopic outrigger (2103).

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