A bearing bush detection positioning device

Abstract

This invention discloses a bearing bush detection and positioning device, including a fixed base, a ring sleeve, and pressure rods. The fixed base is movable up and down and has a through hole through which the ring sleeve passes. The diameter of the through hole is larger than the outer diameter of the ring sleeve. The pressure rod is inserted into the fixed base and extends out of the hole wall. The pressure rod is movable radially along the through hole. Three pressure rods are evenly distributed around the circumference of the through hole. The pressure rods move radially inward along the through hole and abut against the outer wall of the ring sleeve, so that the fixed base can move up and down together with the ring sleeve. The device also includes a positioning base for clamping the bearing bush. A shaft is mounted on the ring sleeve via a bearing. The shaft passes through the ring sleeve and is fixedly mounted on the bush sleeve. The shaft can rotate along its own axis, and the rotation of the shaft drives the rotation of the bush sleeve. This invention provides a bearing bush detection and positioning device that improves the concentricity of the clamping to enhance detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of bearing grinding equipment technology, and more specifically, to a bearing detection and positioning device. Background Technology

[0002] Currently, in the manufacturing process of large-size sliding bearings, the bearing consists of two spliced ​​bearing shells. These shells have a semi-circular ring structure, and their inner walls are coated with an alloy layer to enhance their strength. After the inner wall coating is applied, a standard shaft is inserted into the shell to check the gap between the standard shaft and the shell for quality control. However, due to errors in the machining and clamping of the bearing shells, there is often a significant concentricity error after the standard bearing is inserted into the inner wall, affecting the accuracy of the inspection and presenting a deficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a bearing bush detection and positioning device to improve the concentricity of the clamping and thus improve the detection accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a bearing bush detection and positioning device, comprising a fixed base, a ring sleeve, and a pressure rod. The fixed base is movable up and down and has a through hole through which the ring sleeve passes. The diameter of the through hole is larger than the outer diameter of the ring sleeve. The pressure rod is inserted into the fixed base and extends out of the hole wall of the through hole. The pressure rod is movable radially along the through hole. Three pressure rods are evenly distributed along the circumference of the through hole. The pressure rod moves radially inward along the through hole and abuts against the outer wall of the ring sleeve, thereby enabling the fixed base to move up and down together with the ring sleeve when it moves up and down. The device also includes a positioning base for clamping the bearing bush. A shaft is mounted on the ring sleeve through a bearing. The shaft passes through the ring sleeve and is fixedly mounted on the shaft sleeve. The shaft can rotate along its own axis, and the rotation of the shaft causes the shaft sleeve to rotate.

[0005] The invention is further configured such that the ring includes a protrusion at the bottom, and a pressure rod is located below the ring. The pressure rod located below the ring is slidably connected to the protrusion. The pressure rod is provided with a sliding piece, and the protrusion can move laterally along the outer wall of the sliding piece.

[0006] The present invention is further configured such that the protrusion has a groove, the slider is inserted into the groove, and the slider is slidably connected to the groove.

[0007] The invention is further configured such that the fixed seat is installed on the lifting seat, the lifting seat is driven to lift by a hydraulic cylinder, and the fixed seat is located on both sides of the lifting seat.

[0008] The present invention is further configured such that the fixing seat has a countersunk hole, the pressure rod is inserted into the countersunk hole, the countersunk hole is connected to an extension hole, and the extension hole is connected to a through hole.

[0009] The invention is further configured such that a mounting base is installed on the fixed base, a driving component is installed on the mounting base, a movable plate is installed at the output end of the driving component, the movable plate is inserted into the fixed base, the movable plate and the pressure rod are arranged in a one-to-one correspondence, and a spring is installed between the movable plate and the pressure rod, with the two ends of the spring abutting against the movable plate and the pressure rod respectively.

[0010] The invention is further configured such that the fixing seat is equipped with baffles, which are located at both ends of the ring sleeve along the axial direction.

[0011] The present invention is further configured to include a limiting plate, which is located at both ends of the bushing axially, and the shaft passes through the limiting plate.

[0012] By setting up a ring that can be adjusted horizontally and vertically, the bushing can also be adjusted horizontally and vertically. Driven by the lifting seat, the bushing moves downward until the outer peripheral wall of the bushing is in contact with the inner wall. During the contact process, due to the adjustment of the pressure rod, the bushing and the inner wall of the bearing are concentric, thereby improving the detection accuracy. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of an embodiment;

[0014] Figure 2 for Figure 1 A cross-sectional view along the MM direction;

[0015] Figure 3 for Figure 1 A cross-sectional view along the NN direction;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] Figure 5 This is a schematic diagram of the fit between the pressure rod and the protrusion in the embodiment;

[0018] Figure 6 This is a cross-sectional view of the bearing bush in the embodiment.

[0019] Reference numerals: Positioning seat 1, Pressure plate one 11, Pressure plate two 12, Groove 13, Lifting seat 2, Fixed seat 21, Through hole 211, Countersunk hole 212, Extension hole 213, Baffle 22, Mounting seat 3, Drive component 31, Moving plate 32, Spring 33, Pressure rod 34, Sliding piece 341, Ring sleeve 4, Protrusion 41, Groove 411, Bearing 5, Shaft 6, Motor 61, Support seat 62, Bearing bush 7, Inner wall surface 71, Bushing 8, Limiting plate 9. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-6 As shown, this embodiment discloses a bearing bush detection and positioning device, including a positioning seat 1 and a lifting seat 2. The lifting seat 2 is driven to rise and fall by a hydraulic cylinder. Fixed seats 21 are installed on the left and right sides of the lifting seat 2. The rising and falling of the lifting seat 2 causes the fixed seats 21 to move up and down. Figure 1 , Figure 3 A ring 4 is inserted into the fixing base 21. The ring 4 has a circular structure. The fixing base 21 has a through hole 211 through which the ring 4 passes. The diameter of the through hole 211 is larger than the outer diameter of the ring 4 so that the ring 4 can move within the through hole 211, thereby adjusting the horizontal and vertical positions of the ring 4.

[0022] like Figure 3 As shown, the fixed base 21 is equipped with pressure rods 34. Three pressure rods 34 are evenly distributed along the circumference of the through hole 211. The pressure rods 34 move radially inward along the through hole 211 to abut against the outer wall of the ring sleeve 4. Specifically, the fixed base 21 is equipped with a mounting base 3, and the mounting base 3 is equipped with a driving component 31, which is a hydraulic cylinder. Figure 3 , Figure 4 The fixed base 21 has a countersunk hole 212, and the pressure rod 34 is inserted into the countersunk hole 212. The countersunk hole 212 is connected to an extension hole 213, which is connected to a through hole 211. The pressure rod 34 passes through the extension hole 213 and extends into the through hole 211, abutting against the outer wall of the ring 4. Figure 4 , Figure 5 As shown, the ring 4 includes a protrusion 41 at the bottom, and a pressure rod 34 located below the ring 4. The pressure rod 34 located below the ring 4 is slidably connected to the protrusion 41. Specifically, the pressure rod 34 is provided with a sliding piece 341, and the protrusion 41 is provided with a groove 411. The sliding piece 341 is inserted into the groove 411, and the sliding piece 341 is slidably connected to the groove 411 so that the protrusion 41 can move laterally along the outer wall of the sliding piece 341.

[0023] like Figure 3As shown, a movable plate 32 is installed at the output end of the drive component 31. The movable plate 32 is inserted into the countersunk hole 212. The movable plate 32 and the pressure rod 34 are arranged in a one-to-one correspondence. A spring 33 is installed between the movable plate 32 and the pressure rod 34. The two ends of the spring 33 abut against the movable plate 32 and the pressure rod 34 respectively. The pressure rod 34 can move radially along the through hole 211. When the three pressure rods press the ring sleeve 4, the fixed seat 21 can drive the ring sleeve 4 to move up and down together when it moves up and down.

[0024] like Figure 1 As shown, the fixed base 21 is equipped with a baffle 22, which is located at both ends of the ring sleeve 4 in the axial direction. The baffle 22 limits the ring sleeve 4 in the axial direction to prevent it from falling out.

[0025] A ring sleeve 4 is fitted with a shaft 6 via a bearing 5. The shaft 6 passes through the ring sleeve 4, and a bushing 8 is fixedly mounted on the shaft 6. The outer diameter of the bushing 8 is the same as that of a standard shaft. The shaft 6 passes through the bushing 8 and can rotate along its own axis. The rotation of the shaft 6 drives the bushing 8 to rotate. Specifically, it also includes a support base 62, which is located on one axial side of the shaft 6. A motor 61 is mounted on the support base 62, and the output end of the motor 61 is connected to the shaft 6 to drive its rotation.

[0026] The lifting seat 2 is equipped with a limiting plate 9, which is located at both ends of the bushing 8. The shaft 6 passes through the limiting plate 9, and the limiting plate 9 is used to axially limit the shaft 6.

[0027] like Figure 1 As shown, the positioning seat 1 is used to clamp the bearing shell 7, which has a semi-circular ring structure. The positioning seat 1 has a groove 13, into which the bearing shell 7 is inserted, and the outer wall surface of the bearing shell 7 fits against the inner wall surface of the groove 13. Figure 6 As shown, the bearing bush 7 includes an inner wall surface 71 located on the radially inner side. The inner wall surface 71 is the surface to be tested and is a semi-circular arc surface.

[0028] The steps for using the aforementioned bearing bush detection and positioning device are as follows:

[0029] ① Fix the bearing shell 7 to the positioning seat 1, and combine Figure 1 , Figure 2 The bearing shell 7 is inserted from the side of the positioning seat 1. The positioning seat 1 is equipped with a pressure plate 2 12. The pressure plate 2 12 is installed on the side of the positioning seat 1. The pressure plate 2 12 and the positioning seat 1 press and fix the bearing shell 7 laterally. The positioning seat 1 is equipped with a pressure plate 11. The pressure plate 11 is located on both sides of the bearing shell 7. The pressure plate 11 presses the upper surface of both sides of the bearing shell 7.

[0030] ② Driven by the lifting seat 2, the bushing 8 moves downward until its outer peripheral wall fits against the inner wall surface 71. During the fitting process, due to the adjusting action of the pressure rod 34, the bushing 8 and the inner wall surface 71 become concentric. Figure 3As shown, when the bushing 8 is concentric with the inner wall surface 71, that is, when the wall surfaces are fitted and matched, the two pressure rods located above press the ring sleeve 4 through the driving action of the driving component to prevent the bushing 8 from moving.

[0031] ③ An external device seals the junction of the bushing 8 and the bearing 7. The junction of the bushing 8 and the bearing 7 has an inlet and an outlet. The inlet is for air intake, and the outlet is connected to an air flow meter. Air flows through the gap between the outer wall of the bushing 8 and the inner wall of the bearing 7 and into the air flow meter to display the air flow rate, thus detecting the size of the gap between the outer wall of the bushing 8 and the inner wall of the bearing 7.

[0032] The shaft 6 rotates to drive the bushing 8 to rotate, thereby detecting the gap between the outer wall of the bushing 8 and the inner wall of the bearing 7 at different circumferential positions.

[0033] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bearing bush detection and positioning device, characterized in that, The device includes a fixed base (21), a ring (4), and a pressure rod (34). The fixed base (21) can move up and down. The fixed base (21) has a through hole (211). The ring (4) passes through the through hole (211). The diameter of the through hole (211) is larger than the outer diameter of the ring (4). The pressure rod (34) is inserted into the fixed base (21) and extends out of the hole wall of the through hole (211). The pressure rod (34) can move radially along the through hole (211). There are three pressure rods (34) evenly distributed around the circumference of the through hole (211). The pressure rod (34) moves radially inward along the through hole (211). The pressure rod (34) abuts against the outer wall of the ring (4), so that when the fixed base (21) moves up and down, it can drive the ring (4) to move up and down together. It also includes a positioning seat (1) for clamping the bearing shell (7), the ring sleeve (4) is fitted with a shaft body (6) via a bearing (5), the shaft body (6) passes through the ring sleeve (4), the shaft body (6) is fixedly fitted with a bushing (8), the shaft body (6) passes through the bushing (8), the shaft body (6) is able to rotate along its own axis, and the rotation of the shaft body (6) drives the bushing (8) to rotate; The fixed seat (21) is installed on the lifting seat (2), which is driven to lift by a hydraulic cylinder. The fixed seat (21) is located on both sides of the lifting seat (2).

2. The bearing bush detection and positioning device according to claim 1, characterized in that, The ring (4) includes a protrusion (41) at the bottom, and one of the pressure rods (34) is located below the ring (4). The pressure rod (34) located below the ring (4) is slidably connected to the protrusion (41). The pressure rod (34) is provided with a sliding piece (341). The protrusion (41) can move laterally along the outer wall of the sliding piece (341).

3. The bearing bush detection and positioning device according to claim 2, characterized in that, The protrusion (41) is provided with a groove (411), and the slide (341) is inserted into the groove (411), and the slide (341) is slidably connected to the groove (411).

4. The bearing bush detection and positioning device according to claim 1, characterized in that, The fixed base (21) is provided with a countersunk hole (212), the pressure rod (34) is inserted into the countersunk hole (212), the countersunk hole (212) is connected to an extension hole (213), and the extension hole (213) is connected to the through hole (211).

5. The bearing bush detection and positioning device according to claim 1, characterized in that, The fixed base (21) is equipped with a mounting base (3), the mounting base (3) is equipped with a driving component (31), the output end of the driving component (31) is equipped with a moving plate (32), the moving plate (32) is inserted into the fixed base (21), the moving plate (32) and the pressure rod (34) are arranged in a one-to-one correspondence, a spring (33) is installed between the moving plate (32) and the pressure rod (34), and the two ends of the spring (33) abut against the moving plate (32) and the pressure rod (34) respectively.

6. The bearing bush detection and positioning device according to claim 1, characterized in that, The fixed seat (21) is equipped with a baffle (22), which is located at both ends of the ring sleeve (4) in the axial direction.

7. The bearing bush detection and positioning device according to claim 1, characterized in that, Includes a limiting plate (9), which is located at both ends of the bushing (8) in the axial direction, and the shaft (6) passes through the limiting plate (9).

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