Crankshaft full complement cylindrical roller bearing roller loading device and loading method

Abstract

The present application relates to a full-packed cylindrical roller bearing roller loading device and loading method for crankshaft, the device is characterized by: the upper support, eccentric adjusting base and base are sequentially fixed from top to bottom; the inner hole of the upper support and the inner hole of the eccentric adjusting base are aligned from top to bottom, forming a crankshaft accommodating cavity; an upper eccentric adjusting screw and a lower eccentric adjusting screw are respectively installed in each upper radial threaded hole of the eccentric adjusting base and each lower radial threaded hole of the base; the upper end of the roller supporting table part of the upper support is provided with a roller accommodating sliding groove, which is tangent to the side surface of the inner hole of the annular seat part; a roller limiting block is clamped in the outer side clamping groove of the roller accommodating sliding groove close to the inner hole of the annular seat part of the upper support; the roller pushing sliding block is movably inserted and assembled with the roller accommodating sliding groove; an oil inlet is arranged on the outer side of the roller supporting table part, and the oil inlet is connected with an externally arranged lubricating oil conveying structure. The present application improves the roller loading efficiency and reduces the loading difficulty.

Description

Technical Field

[0001] This invention belongs to the field of high-precision bearing installation technology, specifically relating to a roller installation device and method for a full complement cylindrical roller bearing for crankshafts. Background Technology

[0002] Crankshaft full complement cylindrical roller bearings without inner or outer rings are a type of high-speed precision bearing that can greatly save design space, thereby achieving miniature transmission within a very small space. The rollers in crankshaft full complement cylindrical roller bearings without inner or outer rings are densely packed and small in size. Currently, the rollers are mainly loaded manually, where an operator holds the rollers with tweezers and inserts them one by one into the roller mounting slots on the crankshaft. Manual loading has drawbacks such as low loading efficiency and high loading difficulty, and cannot meet the requirements of mass production. Therefore, there is an urgent need for a device and method that can achieve rapid roller loading, overcoming the shortcomings of existing methods that result in high loading difficulty and low efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a crankshaft full complement cylindrical roller bearing roller loading device and loading method that improves loading efficiency, reduces loading difficulty and ensures loading quality.

[0004] One of the above-mentioned objectives of the present invention is achieved by the following technical solution:

[0005] A roller loading device for a full complement cylindrical roller bearing for a crankshaft, characterized in that it includes a base, an eccentric adjustment base, an upper support, an upper eccentric adjustment screw, a lower eccentric adjustment screw, a lubricating oil delivery structure, a roller limiting block, and a roller pushing slider.

[0006] The eccentric adjustment base is an annular base; the upper support is composed of an annular base portion and a roller support platform portion extending outward from one side of the annular base portion, the roller support platform portion being elongated; the upper support, the eccentric adjustment base, and the base are fixedly connected vertically in sequence; the inner holes of the upper support and the eccentric adjustment base are aligned vertically to form a crankshaft receiving cavity; multiple upper radial threaded holes are provided on the eccentric adjustment base along the circumferential direction, and multiple lower radial threaded holes are evenly distributed on the base along the circumferential direction, and an eccentric adjustment screw and an upper eccentric adjustment screw are respectively installed in each lower radial threaded hole and each upper radial threaded hole;

[0007] A roller receiving groove is provided at the upper end of the roller support platform. The roller receiving groove is a rectangular long groove that extends to the inner hole of the annular seat portion of the upper support. The outer side of the rectangular long groove is tangent to the side of the inner hole of the annular seat portion.

[0008] A slot is provided on the outer side of the inner hole of the annular seat portion of the roller receiving groove near the upper support. The roller limiting block is detachably inserted into the slot, and its inner end extends into the roller receiving groove.

[0009] The roller pusher slider and the roller receiving groove form a movable insert fit; the roller receiving groove is located between the roller limiting block and the roller pusher slider to form a roller placement space;

[0010] An oil inlet is provided on the outer side of the roller support platform, and the oil inlet communicates inward with the roller receiving groove; the oil inlet is connected to an external lubricating oil delivery structure.

[0011] Furthermore, the inner diameter of the annular portion of the upper support is:

[0012]

[0013] In the formula: The inner diameter of the upper support is [missing information]. The diameter for installing the roller shaft section on the crankshaft. Where is the diameter of the roller. This is the radial clearance of the rollers, typically taken as 0.1~0.3mm.

[0014] Furthermore, the width of the roller receiving groove is:

[0015]

[0016] middle: To accommodate the width of the groove for the rollers, Where is the diameter of the roller. This is the radial clearance of the rollers, typically taken as 0.1~0.3mm.

[0017] Furthermore, the lubricating oil delivery structure includes a lubricating oil reservoir, a lubricating oil channel, and a lubricating oil level regulating valve; the lubricating oil reservoir is located on the outside of the roller support platform, and an oil outlet is provided near the bottom of the lubricating oil reservoir on the side close to the roller support platform; the lubricating oil channel connects the oil outlet of the lubricating oil reservoir and the oil inlet of the roller support platform; and the lubricating oil level regulating valve is installed on the lubricating oil channel.

[0018] Furthermore, it also includes a linear guide rail and a moving handle; the linear guide rail is fixedly installed on the upper end of the roller support platform, located on one side of the roller receiving groove, and is arranged parallel to the roller receiving groove; the roller pushing slider is composed of a guide part, a pushing part, and a connecting part disposed between the guide part and the pushing part; the lower end of the guide part is provided with a guide groove, which forms a guiding fit with the linear guide rail through the guide groove, and the pushing part extends into the roller receiving groove; the moving handle is fixedly installed on the upper end of the connecting part of the roller pushing slider.

[0019] The second objective of this invention is achieved through the following technical solution:

[0020] A roller loading method based on the above-mentioned full complement cylindrical roller bearing roller loading device for crankshafts, characterized by comprising the following steps:

[0021] Step 1: Place the crankshaft to be installed with rollers into the crankshaft receiving cavity, which is composed of an eccentric adjustment base and an upper support; adjust multiple upper eccentric adjustment screws and multiple lower eccentric adjustment screws so that the width of the roller mounting cavity formed between the outer ring surface of the crankshaft roller mounting section and the inner hole surface of the upper support is uniform around the circumference.

[0022] Step 2: Insert the roller limit block into the slot on the roller support platform;

[0023] Step 3: Fill the roller receiving groove between the roller limiting block and the roller pushing slider with rollers;

[0024] Step 4: Add an appropriate amount of lubricating oil to the lubricating oil reservoir and adjust the lubricating oil flow rate regulating valve to ensure an appropriate flow rate.

[0025] Step 5: After removing the roller limit block, push the moving handle to make the bearing roller push the slider slide along the linear guide rail, pushing the rollers in the roller receiving groove into the roller mounting cavity in sequence, so as to install the rollers on the roller mounting shaft section on the crankshaft. When the rollers are fully distributed, the filling is completed.

[0026] The advantages and positive effects of this invention are as follows:

[0027] This invention utilizes a combination of a base, an eccentric adjustment base, and an upper support to form a crankshaft housing cavity. Multiple eccentric adjustment screws at the top and bottom ensure the alignment of the crankshaft's roller mounting section with the center hole of the annular portion of the upper support, guaranteeing consistent roller mounting clearance within one revolution. The roller limiting block and the roller pushing slider work together to install and position the rollers before pushing them. Behind the roller limiting block, the roller pushing slider moves towards the annular portion of the upper support, sequentially pushing the rollers from the roller housing groove into the crankshaft's roller mounting section, completing the roller installation. A lubricating oil delivery structure ensures smooth roller delivery during the installation process.

[0028] In summary, by using the device and method of the present invention, a roller can be quickly and accurately installed by pushing, which greatly improves the installation efficiency of the roller and reduces the installation difficulty. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the roller loading device of the present invention.

[0030] Figure 2 This is a front view of the roller loading device of the present invention;

[0031] Figure 3 This is a left view of the roller loading device of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the support in the roller loading device of the present invention;

[0033] Figure 5 This is a diagram showing the fit between the crankshaft, the base, and the eccentric adjustment base in the roller mounting device of the present invention.

[0034] Figure 6 yes Figure 5 A schematic diagram of the structure with rollers inserted in the middle;

[0035] Figure 7 This is a three-dimensional structural diagram of the crankshaft involved in the present invention;

[0036] Figure 8 This is a front view of the crankshaft involved in the present invention;

[0037] Figure 9 This is a three-dimensional structural diagram of the roller loading device of the present invention, which includes a bearing roller crankshaft.

[0038] Figure 10 This is a front view of the roller crankshaft with bearing in the roller loading device of the present invention;

[0039] Figure 11 This is a top view of the roller crankshaft with bearings in the roller mounting device of the present invention. Detailed Implementation

[0040] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0041] Please refer to the following for a crankshaft full complement cylindrical roller bearing roller mounting device. Figures 1-11 The invention comprises: a base 11, an eccentric adjustment base 10, an upper support 7, an upper eccentric adjustment screw 8, a lower eccentric adjustment screw 9, a lubricating oil reservoir 1, a lubricating oil channel 2, a lubricating oil level regulating valve 3, a roller limit block 4, a linear guide rail 12, a moving handle 14, and a roller-driven slider 15. A knob is fixed to the outer end of both the upper and lower eccentric adjustment screws.

[0042] The base is a disc-shaped base with a central mounting groove at the upper end, used to fix the eccentric adjustment base and the upper support. Multiple radially threaded holes are provided on the base along the circumferential direction; three are shown in the attached drawing, but not limited to three, for installing the lower eccentric adjustment screws.

[0043] The eccentric adjustment base is an annular base with multiple upper and lower radial threaded holes arranged along the circumference. The attached diagram shows three holes, but not limited to three, for mounting an upper eccentric adjustment screw. The upper support consists of an annular seat portion 7.1 and a roller support platform portion 7.2 extending outward from one side of the annular seat portion. The roller support platform portion is elongated.

[0044] The eccentric adjustment base is located at the upper end of the base, and the upper support is located at the upper end of the eccentric adjustment base. The annular portion of the eccentric adjustment base and the upper support are coaxially arranged, and the eccentric adjustment base and the upper support are fixed to the base by bolts.

[0045] The inner holes of the upper support and the eccentric adjusting base are aligned vertically to form a crankshaft receiving cavity. After the crankshaft is placed in the crankshaft receiving cavity, the shaft section on the crankshaft where the rollers are mounted corresponds to the inner hole of the annular seat portion of the upper support. Therefore, the expression for the inner hole diameter of the annular seat portion of the upper support is as follows:

[0046]

[0047] In the formula: The inner diameter of the upper support is [missing information]. The diameter for installing the roller shaft section on the crankshaft. Where is the diameter of the roller. This is the radial clearance of the roller (generally taken as 0.1~0.3mm).

[0048] A roller receiving groove 7.4 is provided at the upper end of the roller support platform. This roller receiving groove is a rectangular groove extending into the inner hole of the annular seat portion of the upper support. The outer side of the rectangular groove is tangent to the side of the inner hole of the annular seat portion. The width of the rectangular groove forms a clearance fit with the roller to be installed, preferably expressed as follows:

[0049]

[0050] middle: To accommodate the width of the groove for the rollers, Where is the diameter of the roller. This is the radial clearance of the roller (generally taken as 0.1~0.3mm).

[0051] A slot 7.3 is provided on the outer side of the inner hole of the annular seat portion near the upper support of the roller receiving groove, which is used to position the roller limiting block. The roller limiting block is inserted into the slot in a pluggable manner, and the inner end of the roller limiting block extends into the roller receiving groove to temporarily limit the roller installed in the roller receiving groove.

[0052] The linear guide rail is fixedly installed on the upper end of the roller support platform, located on one side of the roller receiving groove, and is arranged parallel to the roller receiving groove.

[0053] The roller-driven slider consists of a guide section, a pushing section, and a connecting section disposed between the guide section and the pushing section. The lower end of the guide section has a guide groove, which forms a guiding engagement with a linear guide rail. The pushing section extends into a roller receiving groove to push the rear ends of a row of rollers placed within the groove. A movable handle is fixedly installed at the upper end of the connecting section of the roller-driven slider, facilitating the operator's pushing of the rollers.

[0054] The lubricating oil reservoir, lubricating oil channel, and lubricating oil level control valve constitute a lubricating oil delivery structure for lubricating the rollers. The lubricating oil reservoir is located on the outer side of the roller support platform. An oil outlet is located near the bottom of the lubricating oil reservoir on the side closest to the roller support platform, and an oil inlet is located on the outer side of the roller support platform. The oil inlet communicates inward with the roller receiving groove. The lubricating oil channel connects the oil outlet of the lubricating oil reservoir and the oil inlet of the roller support platform, used to deliver the lubricating oil stored in the lubricating oil reservoir to the roller receiving groove for lubrication of the rollers. The introduction of lubricating oil lubricates the bearing rollers, reducing friction during sliding and making it smoother. Simultaneously, after installation, the grease on the bearing rollers can also act as a binder, adhering the bearing rollers to the bearing raceways of the crankshaft. The lubricating oil level control valve is installed on the lubricating oil channel to regulate the amount of lubricating oil delivered.

[0055] The method for inserting rollers using the above-mentioned full complement cylindrical roller bearing roller insertion device for crankshafts is as follows:

[0056] Step 1: Place the crankshaft 5, from which the rollers are to be installed, into the crankshaft housing cavity formed by the eccentric adjustment base and the upper support. To prevent the rollers from falling into the crankshaft hole, a crankshaft end cap 6 can be installed at the upper end of the crankshaft. Adjust the multiple upper and lower eccentric adjustment screws to ensure that the width of the roller mounting cavity formed between the outer ring surface of the crankshaft roller mounting section and the inner hole surface of the upper support is uniform around the circumference. During the adjustment process, a detection pin can be inserted from the end of the roller housing groove. The size of the detection pin is the same as the outer diameter of the roller. Fix a detection handle at the upper end of the detection pin. By rotating the detection pin one revolution within the roller mounting cavity, determine whether the multiple upper and lower eccentric adjustment screws are properly adjusted.

[0057] Step 2: Insert the roller limit block into the slot on the roller support platform;

[0058] Step 3: Fill the roller 13 in the roller receiving groove between the roller limiting block and the roller pushing slider;

[0059] Step 4: Add an appropriate amount of lubricating oil to the lubricating oil reservoir and adjust the lubricating oil flow rate regulating valve to ensure an appropriate flow rate.

[0060] Step 5: After removing the roller limit block, push the moving handle to make the bearing roller push the slider slide along the linear guide rail, pushing the rollers in the roller receiving groove into the roller mounting cavity in sequence, so as to install the rollers on the roller mounting shaft section on the crankshaft. When the rollers are fully distributed, the filling is completed.

[0061] Traditionally, it takes about 20 minutes to assemble each set of bearing rollers by hand. With the device of this invention, it only takes about 2 minutes to assemble each set of bearing rollers, which increases the assembly efficiency by 10 times.

[0062] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A roller mounting device for a full complement cylindrical roller bearing for a crankshaft, characterized in that: It includes a base, an eccentric adjustment base, an upper support, an upper eccentric adjustment screw, a lower eccentric adjustment screw, a lubricating oil delivery structure, a roller limit block, and a roller push slider; The eccentric adjustment base is an annular base; the upper support is composed of an annular base portion and a roller support platform portion extending outward from one side of the annular base portion, the roller support platform portion being elongated; the upper support, the eccentric adjustment base, and the base are fixedly connected vertically in sequence; the inner holes of the upper support and the eccentric adjustment base are aligned vertically to form a crankshaft receiving cavity; multiple upper radial threaded holes are provided on the eccentric adjustment base along the circumferential direction, and multiple lower radial threaded holes are evenly distributed on the base along the circumferential direction, and an eccentric adjustment screw and an upper eccentric adjustment screw are respectively installed in each lower radial threaded hole and each upper radial threaded hole; A roller receiving groove is provided at the upper end of the roller support platform. The roller receiving groove is a rectangular long groove that extends to the inner hole of the annular seat portion of the upper support. The outer side of the rectangular long groove is tangent to the side of the inner hole of the annular seat portion. A slot is provided on the outer side of the inner hole of the annular seat portion of the roller receiving groove near the upper support. The roller limiting block is detachably inserted into the slot, and its inner end extends into the roller receiving groove. The roller pusher slider and the roller receiving groove form a movable insert fit; the roller receiving groove is located between the roller limiting block and the roller pusher slider to form a roller placement space; An oil inlet is provided on the outer side of the roller support platform, and the oil inlet communicates inward with the roller receiving groove; the oil inlet is connected to an external lubricating oil delivery structure.

2. The crankshaft full complement cylindrical roller bearing roller mounting device according to claim 1, characterized in that: The inner diameter of the annular portion of the upper support is: In the formula: The inner diameter of the upper support is [missing information]. The diameter for installing the roller shaft section on the crankshaft. Where is the diameter of the roller. This is the radial clearance of the roller, ranging from 0.1 to 0.3 mm.

3. The crankshaft full complement cylindrical roller bearing roller mounting device according to claim 1, characterized in that: The width of the roller receiving groove is: middle: To accommodate the width of the groove for the rollers, Where is the diameter of the roller. This is the radial clearance of the roller, ranging from 0.1 to 0.3 mm.

4. The crankshaft full complement cylindrical roller bearing roller mounting device according to claim 1, characterized in that: The lubricating oil delivery structure includes a lubricating oil reservoir, a lubricating oil channel, and a lubricating oil level regulating valve. The lubricating oil reservoir is located on the outside of the roller support platform, and an oil outlet is provided near the bottom of the lubricating oil reservoir on the side closest to the roller support platform. The lubricating oil channel connects the oil outlet of the lubricating oil reservoir and the oil inlet of the roller support platform. The lubricating oil level regulating valve is installed on the lubricating oil channel.

5. The crankshaft full complement cylindrical roller bearing roller mounting device according to claim 1, characterized in that: It also includes a linear guide rail and a moving handle; the linear guide rail is fixedly installed on the upper end of the roller support platform, located on one side of the roller receiving groove, and is arranged parallel to the roller receiving groove; the roller pushing slider is composed of a guide part, a pushing part, and a connecting part disposed between the guide part and the pushing part; the lower end of the guide part is provided with a guide groove, which forms a guiding fit with the linear guide rail; the pushing part extends into the roller receiving groove; the moving handle is fixedly installed on the upper end of the connecting part of the roller pushing slider.

6. A roller loading method based on the roller loading device for a full complement cylindrical roller bearing for a crankshaft according to any one of claims 1-5, characterized in that, Includes the following steps: Step 1: Place the crankshaft to be installed with rollers into the crankshaft receiving cavity, which is composed of an eccentric adjustment base and an upper support; adjust multiple upper eccentric adjustment screws and multiple lower eccentric adjustment screws so that the width of the roller mounting cavity formed between the outer ring surface of the crankshaft roller mounting section and the inner hole surface of the upper support is uniform around the circumference. Step 2: Insert the roller limit block into the slot on the roller support platform; Step 3: Fill the roller receiving groove between the roller limiting block and the roller pushing slider with rollers; Step 4: Add an appropriate amount of lubricating oil to the lubricating oil reservoir and adjust the lubricating oil flow rate regulating valve to ensure an appropriate flow rate. Step 5: After removing the roller limit block, push the moving handle to make the bearing roller push the slider slide along the linear guide rail, pushing the rollers in the roller receiving groove into the roller mounting cavity in sequence, so as to install the rollers on the roller mounting shaft section on the crankshaft. When the rollers are fully distributed, the filling is completed.

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