Diesel engine silent bearing and its assembling tool

Abstract

This utility model discloses a diesel engine silent bearing and its assembly fixture, including an outer ring, an inner ring, a steel ball disposed between the outer ring and the inner ring, and a cage surrounding the steel ball. The outer wall of the steel ball is coated with a metal carbide coating. This utility model protects the surface of the steel ball by coating it with a metal carbide coating, preventing scratches during assembly. The low coefficient of friction of the metal carbide coating also contributes to a certain degree of noise reduction. Furthermore, a buffer structure is provided at the loading point of the assembly fixture to prevent scratches caused by impact during assembly, improving the integrity of the steel ball and further ensuring the quiet operation of the bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing application technology, and in particular to a diesel engine silent bearing and its assembly tooling. Background Technology

[0002] Diesel engine bearings are one of the key components of an engine. They are mainly used to support rotating parts such as crankshafts and camshafts, reduce friction and wear, and ensure the normal operation of the engine.

[0003] Existing diesel engine bearings generate a lot of noise during use, thus affecting the surrounding environment. Most of the noise is caused by scratches on the steel balls inside the bearing during assembly, which leads to noise during operation. Furthermore, surface wear of the bearing during long-term use also causes noise. Therefore, this utility model proposes a diesel engine silent bearing and its assembly tooling. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a silent bearing for diesel engines and its assembly fixture. By coating the surface of the steel ball with a layer of metal carbide coating, the surface of the steel ball can be protected to prevent scratches during assembly. The low coefficient of friction of the metal carbide coating can also achieve a certain degree of noise reduction. At the same time, a buffer structure is set at the loading point of the assembly fixture so that the steel ball can avoid scratches caused by impact during assembly, improve the integrity of the steel ball, and further ensure the quiet effect of the bearing during use.

[0005] To solve the above-mentioned technical problems, the present invention provides a silent bearing for a diesel engine, comprising an outer ring, an inner ring, a steel ball disposed between the outer ring and the inner ring, and a cage enclosing the steel ball, wherein the outer wall of the steel ball is coated with a metal carbide coating.

[0006] Also provided is an assembly fixture for a silent bearing of a diesel engine, including a support base, characterized in that: a rotating disk is rotatably connected to the top of the support base, and a drive mechanism is bolted to the center of the top of the support base, and the drive mechanism is drivenly connected to the rotating disk.

[0007] The top circumference of the rotating disk is uniformly bolted with multiple positioning mechanisms, and the bottom circumference of the rotating disk is provided with offset mechanisms corresponding to the positions of the positioning mechanisms. The bottom of the support base is bolted with a feeding mechanism to buffer and input a fixed amount of steel balls into each bearing.

[0008] The present invention is further configured such that: the top of the support base is bolted with slide rails near the inner arc wall and the outer arc wall;

[0009] The driving mechanism includes a drive motor bolted to the center of the top of the support base. The drive end of the drive motor is fixedly connected to a drive gear. The outer wall of the drive gear is meshed with multiple driven gears, and the multiple driven gears are mounted on the top of the support base through an interference-fitted connecting shaft on their inner wall. The outer walls of the multiple driven gears are meshed with the inner wall of the rotating disk, driving the rotating disk to make circular motion on the slide rail.

[0010] With the above technical solution, the drive motor is started, and its output shaft drives the drive gear on the end face to rotate, thereby driving multiple driven gears meshing with the outer wall to rotate on the support base through the connecting shaft. This, in turn, drives the meshing rotating disk to move circumferentially on the support base through the slide rail, so that the assembled bearing can be replaced at the assembly station, avoiding scratches caused by the movement of the bearing.

[0011] The present invention is further configured such that: the positioning mechanism includes a positioning cylinder bolted to the top of the rotating disk, a clamping block is fixedly connected to the driving end of the positioning cylinder, and a positioning block corresponding to the clamping block is bolted to the top of the rotating disk near the outer arc wall for positioning and clamping the outer ring.

[0012] The above technical solution activates the positioning cylinder, whose drive rod moves the clamping block on the end face, thereby enabling the positioning block to clamp and fix the inserted outer ring, facilitating the subsequent filling of steel balls.

[0013] The present invention is further configured such that: the rotating disk has multiple movable grooves in the circumferential direction, and the multiple movable grooves are respectively configured to correspond to multiple positioning mechanisms;

[0014] The offset mechanism includes a retaining block rotatably connected inside the movable groove, an offset cylinder rotatably connected to the bottom of the retaining block, and the tail end of the offset cylinder rotatably connected to the top of the rotating disk.

[0015] With the above technical solution, the offset cylinder is activated, and its drive rod drives the end face abutment block to rotate inside the movable groove, thereby pressing the inner ring against the inner wall of the outer ring, which makes it easier to reserve space for the filling of steel balls. When resetting, the internal abutment block drives the inner ring to reset, so that it is located in the center, thereby dispersing the filled steel balls and facilitating subsequent assembly operations.

[0016] The present invention is further configured such that: the feeding mechanism includes an L-shaped frame bolted to the bottom of the support base, an adjusting cylinder bolted to the side wall of the L-shaped frame, a lifting block bolted to the end face of the drive rod of the adjusting cylinder, and the lifting block slidably connected to a slide rod provided at the top of the L-shaped frame, a guide tube bolted to the top of the lifting block, the bottom of the guide tube being open, a rubber pad being fixedly connected thereto, and a buffer block being provided at the top center of the rubber pad.

[0017] With the above technical solution, the adjustment cylinder is activated, and its drive rod drives the lifting block on the end face to slide on the slide rod, so that the top guide tube can move up and down, so that its end face corresponds to the inside of the bearing. This makes it easier for the steel ball to be fed in a protective manner along the guide tube through the buffer block when it is dropped, ensuring the integrity of the steel ball.

[0018] The present invention is further configured such that: the conduit is continuously bent, and the buffer block is settled on top of the rubber pad and is connected to it in an elastic arc shape.

[0019] The above technical solution utilizes a conduit with multiple bends to reduce the impact of the steel ball, thus preventing damage to its surface. At the same time, the buffer block at the bottom can buffer and block the falling steel ball, allowing it to enter the bearing from the inside.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. The present invention proposes a diesel engine silent bearing and its assembly fixture, which protects the surface of the steel ball by coating it with a metal carbide coating to prevent scratches during assembly, and the low coefficient of friction of the metal carbide coating can achieve a certain noise reduction effect.

[0022] 2. The diesel engine silent bearing and its assembly fixture proposed in this utility model have a buffer structure at the loading point of the assembly fixture, which can prevent the steel balls from being scratched by impact during assembly, improve the integrity of the steel balls, and further ensure the silent effect of the bearing during use. Attached Figure Description

[0023] Figure 1 This is a structural diagram of a diesel engine silent bearing according to the present invention;

[0024] Figure 2 This is a cross-sectional view of a diesel engine silent bearing according to the present invention;

[0025] Figure 3 This is a structural diagram of a diesel engine silent bearing assembly fixture according to the present invention;

[0026] Figure 4 This is a structural diagram of the rotating disk in the assembly tooling for a diesel engine silent bearing according to this utility model;

[0027] Figure 5 This is a structural diagram of the support base in the assembly tooling for a diesel engine silent bearing according to this utility model;

[0028] Figure 6This is a structural diagram of the feeding mechanism in the assembly tooling for a diesel engine silent bearing according to this utility model;

[0029] Figure 7 This is a structural diagram of the offset mechanism in the assembly tooling for a diesel engine silent bearing according to this utility model.

[0030] In the diagram: 1. Outer ring; 2. Inner ring; 3. Steel ball; 4. Cage; 5. Support seat; 51. Slide rail; 6. Rotary disk; 61. Movable groove; 7. Drive mechanism; 71. Drive motor; 72. Drive gear; 73. Driven gear; 74. Connecting shaft; 8. Positioning mechanism; 81. Positioning cylinder; 82. Clamping block; 83. Positioning block; 9. Offset mechanism; 91. Clamping block; 92. Offset cylinder; 10. Feeding mechanism; 101. L-shaped frame; 102. Adjusting cylinder; 103. Lifting block; 104. Slide rod; 105. Guide tube; 106. Rubber pad; 107. Buffer block. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, a diesel engine silent bearing includes an outer ring 1, an inner ring 2, steel balls 3 disposed between the outer ring 1 and the inner ring 2, and a cage 4 enclosing the steel balls 3. The outer wall of the steel balls 3 is coated with a metal carbide coating. The metal carbide coating generally has a low coefficient of friction. Taking tungsten carbide (WC) coating as an example, its coefficient of friction is usually around 0.2. When the surface of the steel balls 3 is coated with a metal carbide coating, the friction between the steel balls 3 and components such as the raceway and the cage 4 can be reduced during the operation of the bearing. The reduction in friction means that the intensity of vibration and noise sources generated when the components move relative to each other is reduced, thereby playing a certain role in noise reduction.

[0033] like Figures 3-5 As shown, an assembly fixture for a silent bearing of a diesel engine is also provided, including a support base 5. The fixture is characterized in that: a rotating disk 6 is rotatably connected to the top of the support base 5, a drive mechanism 7 is bolted to the center of the top of the support base 5, and the drive mechanism 7 is drivenly connected to the rotating disk 6. Slide rails 51 are bolted to the top of the support base 5 near the inner and outer arc walls, so that the support base 5 can slide stably on the slide rails 51 when the rotating disk 6 is driven to rotate.

[0034] like Figure 4As shown, the drive mechanism 7 includes a drive motor 71 bolted to the center of the top of the support base 5. A drive gear 72 is fixedly connected to the drive end of the drive motor 71. Multiple driven gears 73 are meshed with the outer wall of the drive gear 72. The multiple driven gears 73 are mounted on the top of the support base 5 through a connecting shaft 74 with an interference fit on their inner wall. The outer walls of the multiple driven gears 73 are meshed with the inner wall of the rotating disk 6. The rotating disk 6 is driven to make circular motion on the slide rail 51. When the drive motor 71 is started, its output shaft drives the drive gear 72 on the end face to rotate, thereby driving the multiple driven gears 73 meshed with the outer wall to rotate on the support base 5 through the connecting shaft 74. This, in turn, drives the meshed rotating disk 6 to make circular motion on the support base 5 through the slide rail 51, so that the assembled bearing can be replaced at the assembly station, avoiding scratches caused by the movement of the bearing.

[0035] like Figure 4 As shown, multiple positioning mechanisms 8 are evenly bolted to the top circumference of the rotating disk 6. Each positioning mechanism 8 includes a positioning cylinder 81 bolted to the top of the rotating disk 6. A clamping block 82 is fixedly connected to the drive end of the positioning cylinder 81. A positioning block 83 corresponding to the clamping block 82 is bolted to the top of the rotating disk 6 near the outer arc wall to position and clamp the outer ring 1. When the positioning cylinder 81 is activated, its drive rod drives the clamping block 82 on the end face to move, thereby enabling the positioning block 83 to clamp and fix the inserted outer ring 1, which facilitates the subsequent filling of steel balls 3.

[0036] like Figure 4 and Figure 7 As shown, offset mechanisms 9 are provided on the bottom circumference of the rotating disk 6 and at the positions corresponding to the positioning mechanisms 8. Multiple movable slots 61 are provided on the circumference of the rotating disk 6, and the multiple movable slots 61 are respectively provided with multiple positioning mechanisms 8.

[0037] The offset mechanism 9 includes a clamping block 91 rotatably connected inside the movable groove 61. An offset cylinder 92 is rotatably connected to the bottom of the clamping block 91. The tail end of the offset cylinder 92 is rotatably connected to the top of the rotating disk 6. When the offset cylinder 92 is activated, its drive rod drives the clamping block 91 on the end face to rotate inside the movable groove 61, thereby pressing the inner ring 2 against the inner wall of the outer ring 1, so as to leave space for the filling of the steel ball 3. When resetting, the clamping block 91 inside drives the inner ring 2 to reset, so that it is located at the center, thereby dispersing the filled steel ball 3, which facilitates the subsequent assembly operation.

[0038] like Figure 3 and Figure 6As shown, a feeding mechanism 10 is bolted to the bottom of the support base 5 to buffer and input a fixed amount of steel balls 3 into each bearing. The feeding mechanism 10 includes an L-shaped frame 101 bolted to the bottom of the support base 5. An adjusting cylinder 102 is bolted to the side wall of the L-shaped frame 101. A lifting block 103 is bolted to the end face of the drive rod of the adjusting cylinder 102. The lifting block 103 is slidably connected to a slide rod 104 provided at the top of the L-shaped frame 101. A guide tube 105 is bolted to the top of the lifting block 103. The guide tube 105 is continuously bent. The buffer block 107 sinks to the top of the rubber pad 106 and is elastically arc-shaped connected to it. The multi-bend guide tube 105 can reduce the impact of steel balls. The impact force of the ball is reduced to prevent damage to its surface. At the same time, the buffer block 107 at the bottom can buffer and block the falling steel ball, allowing it to enter the bearing from the outside. The bottom of the guide tube 105 is open and is fixedly connected to a rubber pad 106. The buffer block 107 is set at the center of the top of the rubber pad 106. When the adjusting cylinder 102 is activated, its drive rod drives the lifting block 103 at the end face to slide on the slide rod 104, so that the top guide tube 105 can move up and down, so that its end face can correspond to the inside of the bearing. This makes it easier for the steel ball 3 to be fed in a protective manner along the guide tube 105 and through the buffer block 107 when it falls, ensuring the integrity of the steel ball 3.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A silent bearing for a diesel engine, comprising an outer ring (1), an inner ring (2), steel balls (3) arranged between the outer ring (1) and the inner ring (2), and a cage (4) wrapping the steel balls (3), characterized in that: The outer wall of the steel ball (3) is coated with a metal carbide coating.

2. A diesel engine silent bearing assembly tooling for the diesel engine silent bearing of claim 1, comprising a support seat (5), characterized in that: The top of the support base (5) is rotatably connected to a rotating disk (6), and a drive mechanism (7) is bolted to the center of the top of the support base (5), and the drive mechanism (7) is connected to the rotating disk (6) in a transmission manner. The top circumference of the rotating disk (6) is uniformly bolted with multiple positioning mechanisms (8), and the bottom circumference of the rotating disk (6) is provided with offset mechanisms (9) corresponding to the positions of the positioning mechanisms (8). The bottom of the support base (5) is bolted with a feeding mechanism (10) to buffer and input a fixed amount of steel balls (3) into each bearing.

3. The diesel engine silent bearing assembly tooling of claim 2, wherein: The top of the support base (5) is bolted with slide rails (51) near the inner and outer arc walls. The drive mechanism (7) includes a drive motor (71) bolted to the center of the top of the support base (5). The drive end of the drive motor (71) is fixedly connected to a drive gear (72). The outer wall of the drive gear (72) is meshed with multiple driven gears (73). The multiple driven gears (73) are mounted on the top of the support base (5) through a connecting shaft (74) with an interference fit on their inner wall. The outer walls of the multiple driven gears (73) are meshed with the inner wall of the rotating disk (6), driving the rotating disk (6) to make circular motion on the slide rail (51).

4. The diesel engine silent bearing assembly fixture according to claim 3, characterized in that: The positioning mechanism (8) includes a positioning cylinder (81) bolted to the top of the rotating disk (6). The driving end of the positioning cylinder (81) is fixedly connected to a clamping block (82). The top of the rotating disk (6) near the outer arc wall is bolted to a positioning block (83) corresponding to the clamping block (82) for positioning and clamping the outer ring (1).

5. The diesel engine silent bearing assembly tooling of claim 4, wherein: The rotating disk (6) has multiple movable slots (61) in the circumferential direction, and the multiple movable slots (61) are respectively set with multiple positioning mechanisms (8); The offset mechanism (9) includes a retaining block (91) rotatably connected inside the movable groove (61), and an offset cylinder (92) rotatably connected to the bottom of the retaining block (91). The tail end of the offset cylinder (92) is rotatably connected to the top of the rotating disk (6).

6. The diesel engine silent bearing assembly tooling of claim 2, wherein: The feeding mechanism (10) includes an L-shaped frame (101) bolted to the bottom of the support base (5). An adjusting cylinder (102) is bolted to the side wall of the L-shaped frame (101). A lifting block (103) is bolted to the end face of the drive rod of the adjusting cylinder (102). The lifting block (103) is slidably connected to a slide rod (104) set on the top of the L-shaped frame (101). A guide tube (105) is bolted to the top of the lifting block (103). The bottom of the guide tube (105) is open and is fixedly connected to a rubber pad (106). A buffer block (107) is set at the center of the top of the rubber pad (106).

7. The diesel engine silent bearing assembly tooling of claim 6, wherein: The conduit (105) is continuously bent, and the buffer block (107) is settled on top of the rubber pad (106) and is connected to it in an elastic arc shape.

Images