Engine bearing bush with self-adaptive adjusting function

Abstract

The utility model provides an engine bearing bush with a self-adaptive adjusting function, which relates to the field of engine bearing bushes and comprises a bearing bush seat and a roller, a bearing bush block is arranged on the inner side of the bearing bush seat, a wheel groove is arranged on the inner side wall of the bearing bush block, communicated movable grooves are arranged on two sides of the wheel groove, a bearing is arranged in each movable groove, and the roller is arranged on the bearing bush seat. A connecting block is connected to the outer side of the bearing, a telescopic rod is arranged on the outer side of the connecting block, meanwhile, the outer end of the telescopic rod is in threaded connection with a threaded pipe, the rolling wheel comprises a central wheel shaft, an outer wear-resisting layer is arranged on the outer side of the wheel shaft, and the two ends of the wheel shaft are fixedly inserted into the bearing. The engine lower bearing bush solves the problems that an existing engine lower bearing bush is still large in friction factor, and large abrasion exists on a main shaft, so that the operation stability deviation of the main shaft is caused.

Description

Technical Field

[0001] The utility model relates to the technical field of engine bearing bushes, in particular to an engine bearing bush with a self-adaptive adjustment function. Background Art

[0002] The crankshaft connecting rod mechanism of the engine transmits the power of the reciprocating motion of the piston in the engine to the outside of the engine. Taking a multi-cylinder engine as an example, a flywheel is set at one end of the crankshaft and the power is output through a belt at the other end. There is an assembly gap of 0.07-0.14mm between the existing engine crankshaft and the bearing, which is large and difficult to overcome by improving the assembly process. The current technology cannot adjust the gap between the crankshaft and the bearing. After searching, the prior art (application number: CN202221555505.0) records "a lower bearing assembly and an engine including the assembly, which relate to the technical field of engine crankshafts. The present invention sets at least one set of bearing adjustment units, including setting an internal threaded hole on the bearing cover, squeezing a steel ball through an internal spring, and transmitting an external force to the lower bearing under the action of the spring force, so that the lower bearing fits the crankshaft, reducing the installation gap between the crankshaft and the bearing, and making the gaps between the engine bearing holes and the crankshaft uniform and on the same horizontal line, so that the engine is smoother during operation, thereby reducing the wear of the engine crankshaft. Through the use of the lower bearing assembly, the gaps between the engine bearing holes and the crankshaft are uniform and on the same horizontal line, so that the engine is smoother during operation, thereby reducing the wear of the engine crankshaft, reducing the friction between the piston ring and the cylinder hole caused by vibration, and then reducing the fuel consumption of the engine, reducing the emission of the engine, and reducing the failure rate of the engine."

[0003] However, although the engine lower bearing in the prior art has achieved the effect of reducing friction, it still has some shortcomings: the steel ball involved in the existing engine lower bearing is located on the inner side of the bearing, and the steel ball does not contact the main shaft. Therefore, there is still sliding friction between the bearing and the main shaft, which leads to the failure to significantly reduce the friction effect. Because no matter how the gap is reduced, there must be contact friction between the bearing and the main shaft. Secondly, when the bearing itself wears to the steel ball after long-term use, the friction surface of the main shaft is changed. The friction coefficients between different materials are different, and the local spindle is worn to different degrees, which affects the stable operation of the main shaft. Utility Model Content

[0004] In order to overcome the defects of the prior art, an engine bearing with an adaptive adjustment function is provided to solve the problem that the existing engine lower bearing still has large friction factors and large wear on the main shaft resulting in stable deviation of the main shaft operation.

[0005] In order to achieve the above-mentioned purpose, an engine bearing with adaptive adjustment function is provided, including: a bearing seat and a roller, a bearing block is provided on the inner side of the bearing seat, and a wheel groove is opened on the inner wall of the bearing block, and connected movable grooves are opened on both sides of the wheel groove, and a bearing is provided in the movable groove, and a connecting block is connected to the outer side of the bearing, and a telescopic rod is provided on the outer side of the connecting block, and a threaded tube is screwed on the outer end of the telescopic rod, and the roller includes a central wheel axle, and an outer wear-resistant layer is provided on the outer side of the wheel axle, and the two ends of the wheel axle are plugged and fixed inside the bearing.

[0006] Furthermore, the movable groove is provided on the groove walls on both sides of the wheel groove, and the inner groove wall of the movable groove is provided with a limiting groove.

[0007] Furthermore, the connecting block is configured as an arc-shaped block structure, and a limiting block is connected to the outer side of the connecting block, and the limiting block is slidably connected in the limiting groove.

[0008] Furthermore, a first auxiliary spring and a second auxiliary spring are provided inside the limiting groove, and the first auxiliary spring and the second auxiliary spring are respectively located at the upper and lower ends of the limiting block.

[0009] Furthermore, a main spring is provided on the outer side of the telescopic rod, and the main spring is located at one end of the threaded tube facing the connecting block, and the outer diameter of the main spring is smaller than the outer diameter of the threaded tube.

[0010] Furthermore, the threaded tube is rotatably connected in the bearing seat, and the outer end of the threaded tube is set as a blocking end, and a hexagonal groove is opened on the outer side of the blocking end.

[0011] Furthermore, the outer side of the wheel axle is rotatably connected to the inner wear-resistant layer, the outer side of the inner wear-resistant layer is fixed with a reinforcement layer, and the outer side of the reinforcement layer is rotatably connected to the outer wear-resistant layer.

[0012] The beneficial effects of the utility model are:

[0013] 1. The axle included in the roller is used, and the axle is rotatably connected to the bearing, and the inner wear-resistant layer is rotatably connected to the outer side of the axle, and the outer wear-resistant layer is rotatably connected to the outer side of the reinforcement layer. After the bearing and the engine main shaft are installed, the three-layer rolling friction relationship is realized through the roller's own structure, thereby effectively reducing the friction factor between the main shaft and the bearing. At the same time, the inner wear-resistant layer, the reinforcement layer and the outer wear-resistant layer enhance the wear resistance of the axle itself, thereby reducing the wear on the engine main shaft.

[0014] 2. By utilizing the movable groove, the connecting block, the telescopic rod and the threaded tube, after the bearing seat is installed, the length of the telescopic rod can be adjusted by rotating the threaded tube, and then the upper end of the telescopic rod is slidably inserted into the guide hole opened on the outside of the connecting block, so that after adjustment, the elastic force applied to the connecting block by the main spring, the auxiliary spring and the limit block enables the connecting block to form an adaptive adjustment function for the wheel axle through the bearing, ensuring that each roller maintains equal pressure rolling contact with the engine main shaft, thereby improving the stability of the engine main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the bearing bush seat according to an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the unfolded structure of the bearing bush seat in a top view according to an embodiment of the utility model.

[0017] Figure 3 For the utility model embodiment Figure 2 Schematic diagram of the structure at point A in the middle.

[0018] Figure 4 It is a schematic diagram of the local axial cross-sectional structure of the bearing seat of an embodiment of the utility model.

[0019] In the figure: 1. bearing seat; 11. bearing block; 12. wheel groove; 13. bearing; 14. movable groove; 15. connecting block; 151. limit block; 16. limit groove; 161. first auxiliary spring; 162. second auxiliary spring; 17. telescopic rod; 18. main spring; 19. threaded tube; 2. roller assembly; 21. wheel axle; 22. inner wear-resistant layer; 23. reinforcement layer; 24. outer wear-resistant layer. DETAILED DESCRIPTION

[0020] Reference Figures 1 to 4 As shown, the utility model provides an engine bearing with adaptive adjustment function, including: a bearing seat 1 and a roller 2, a bearing block 11 is provided on the inner side of the bearing seat 1, and a wheel groove 12 is opened on the inner side wall of the bearing block 11, and movable grooves 14 are opened on both sides of the wheel groove 12, and a bearing 13 is provided in the movable groove 14, and a connecting block 15 is connected to the outer side of the bearing 13, and a telescopic rod 17 is connected to the outer side of the connecting block 15, and a threaded tube 19 is screwed on the outer end of the telescopic rod 17, and the roller 2 includes a central wheel axle 21, and an outer side of the wheel axle 21 is provided with an outer wear-resistant layer 24, and both ends of the wheel axle 21 are plugged and fixed in the bearing 13, the outer side of the wheel axle 21 is rotatably connected to the inner wear-resistant layer 22, and the outer side of the inner wear-resistant layer 22 is fixed with a reinforcing layer 23, and the outer side of the reinforcing layer 23 is rotatably connected to the outer wear-resistant layer 24.

[0021] In this embodiment, the bearing seat 1 and the roller 2 installed inside constitute the main structure of the engine bearing with adaptive adjustment function involved in this application.

[0022] Specifically, the bearing seat 1 in the present application is a lower bearing structure, and the upper bearing has the same structure, so that the upper and lower bearings are assembled to form a limit fixation for the engine main shaft, and the rollers 2 are evenly distributed on the outer wall of the engine main shaft.

[0023] Specifically, the inner wear-resistant layer 22 and the outer wear-resistant layer 24 are both made of bronze, and the reinforcing layer 23 is made of carbon structural steel, thereby enhancing the wear resistance of the inner and outer sides of the roller 2 .

[0024] like Figure 2 and Figure 4 As shown, the movable groove 14 is opened on the groove walls on both sides of the wheel groove 12, and the inner groove wall of the movable groove 14 is opened with a limiting groove 16, the connecting block 15 is set as an arc block structure, and the outer side of the connecting block 15 is connected to the limiting block 151, and the limiting block 151 is slidably connected in the limiting groove 16, and the first auxiliary spring 161 and the second auxiliary spring 162 are provided inside the limiting groove 16, and the first auxiliary spring 161 and the second auxiliary spring 162 are respectively located at the upper and lower ends of the limiting block 151.

[0025] Specifically, a sliding hole is provided at the bottom of the connecting block 15, and the upper end of the telescopic rod 17 is inserted into the sliding hole and connected to the connecting block 15 in an up-and-down sliding manner, but does not rotate relative to the connecting block 15.

[0026] As a preferred embodiment, by setting a limit block 151 and two upper and lower auxiliary springs, the movement stability of the limit block 151 is enhanced inside the limit groove 16. At the same time, the elastic force of the second auxiliary spring 162 is greater than that of the first auxiliary spring 161, so as to maintain the supporting force of the limit block 151 on the connecting block 15 toward the inner arc center of the bearing block 11.

[0027] like Figure 4 As shown, a main spring 18 is provided on the outer side of the telescopic rod 17, and the main spring 18 is located at one end of the threaded tube 19 facing the connecting block 15. At the same time, the outer diameter of the main spring 18 is smaller than the outer diameter of the threaded tube 19. The threaded tube 19 is rotatably connected in the bearing seat 1, and the outer end of the threaded tube 19 is set as a blocking end, and a hexagonal groove is opened on the outer side of the blocking end.

[0028] As a preferred embodiment, a torque wrench is used to facilitate the rotation of the threaded tube 19, and the torque of each group of threaded tubes 19 is kept the same, thereby ensuring that the connection gap between each group of rollers 2 and the engine main shaft is the same.

[0029] When in use, the wheel axle included in the roller is utilized, and the wheel axle is rotatably connected to the bearing, as well as the inner wear-resistant layer rotatably connected to the outside of the wheel axle, and the outer wear-resistant layer rotatably connected to the outside of the reinforcement layer, so that after the bearing and the engine main shaft are installed, a three-layer rolling friction relationship is realized through the roller's own structure, thereby effectively reducing the friction factor between the main shaft and the bearing. At the same time, the wear-resistant effect inside the wheel axle itself is enhanced through the inner wear-resistant layer, the reinforcement layer and the outer wear-resistant layer, thereby reducing the wear on the engine main shaft. By utilizing the movable groove, the connecting block, the telescopic rod and the threaded tube, after the bearing seat is installed, the length of the telescopic rod can be adjusted by rotating the threaded tube, and then the upper end of the telescopic rod is slidably inserted into the guide hole opened on the outside of the connecting block, so that after adjustment, the elastic force applied to the connecting block through the main spring, the auxiliary spring and the limit block makes the connecting block form an adaptive adjustment function on the wheel axle through the bearing, ensuring that each roller maintains equal pressure rolling contact with the engine main shaft, thereby improving the stability of the engine main shaft.

[0030] The engine bearing with adaptive adjustment function of the utility model can effectively solve the problems of large friction factors in the existing engine lower bearing and large wear on the main shaft leading to stable deviation of the main shaft operation. It is realized on the basis of the existing engine bearing technology with adaptive adjustment function, has the advantages of significantly reducing the friction factors between the engine main shaft and the bearing, and reducing the wear resistance effect, thereby ensuring the long-term movement wear uniformity of the engine main shaft and further ensuring the movement stability of the engine main shaft.

Claims

1. An engine bearing with adaptive adjustment function, include: A bearing seat (1) and a roller (2), characterized in that: a bearing block (11) is provided on the inner side of the bearing seat (1), and a wheel groove (12) is provided on the inner side wall of the bearing block (11), and movable grooves (14) are provided on both sides of the wheel groove (12), and a bearing (13) is provided in the movable groove (14), and a connecting block (15) is connected to the outer side of the bearing (13), and a telescopic rod (17) is provided on the outer side of the connecting block (15), and a threaded tube (19) is screwed on the outer end of the telescopic rod (17), and the roller (2) includes a central axle (21), and an outer wear-resistant layer (24) is provided on the outer side of the axle (21), and the two ends of the axle (21) are plugged and fixed inside the bearing (13).

2. The engine bearing with adaptive adjustment function according to claim 1, It is characterized in that The movable groove (14) is provided on the groove walls on both sides of the wheel groove (12), and a limiting groove (16) is provided on the inner groove wall of the movable groove (14).

3. The engine bearing with adaptive adjustment function according to claim 1, It is characterized in that The connecting block (15) is configured as an arc-shaped block structure, and the outer side of the connecting block (15) is connected to a limiting block (151), and the limiting block (151) is slidably connected in the limiting groove (16).

4. The engine bearing with adaptive adjustment function according to claim 3, It is characterized in that A first auxiliary spring (161) and a second auxiliary spring (162) are arranged inside the limiting groove (16), and the first auxiliary spring (161) and the second auxiliary spring (162) are respectively located at the upper and lower ends of the limiting block (151).

5. The engine bearing with adaptive adjustment function according to claim 1, It is characterized in that A main spring (18) is provided on the outer side of the telescopic rod (17), and the main spring (18) is located at one end of the threaded tube (19) facing the connecting block (15), and the outer diameter of the main spring (18) is smaller than the outer diameter of the threaded tube (19).

6. The engine bearing with adaptive adjustment function according to claim 1, It is characterized in that The threaded tube (19) is rotatably connected in the bearing seat (1), and the outer end of the threaded tube (19) is set as a blocking end, and a hexagonal groove is provided on the outer side of the blocking end.

7. The engine bearing with adaptive adjustment function according to claim 1, It is characterized in that The outer side of the wheel axle (21) is rotatably connected to an inner wear-resistant layer (22), a reinforcement layer (23) is fixed to the outer side of the inner wear-resistant layer (22), and an outer wear-resistant layer (24) is rotatably connected to the outer side of the reinforcement layer (23).

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