Visual error proofing device for bearing assembly

Abstract

The application provides a visual error-proof device for bearing bush assembly and relates to the technical field of engine bearing bush assembly error-proofing, which comprises a marking tube and a plurality of marking seats. A plurality of positioning notches are formed on one side of the marking tube, and a plurality of mounting notches are formed on the other side of the marking tube. The marking seat comprises a mounting ring, the inner wall of the mounting ring is integrally formed with a disc, a mounting sleeve ring is integrally formed at the center of both sides of the disc, a marking column is rotatably connected to the inside of the mounting sleeve ring, and two marking heads are embeddedly connected to the inside of one end of the marking column. The technical key points are as follows: the plurality of marking seats with coaxial arrangement are mounted in the inside of the marking tube, the plurality of positioning notches on the marking tube are used to buckle the outside of the plurality of bearing seats, the two marking columns on both sides of the mounting notch are controlled, the red or blue marking head on the marking column faces the opening of the mounting notch to mark the journal, and then the assembly work of the bearing bush is facilitated without the need for the staff to remember.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine bearing shell assembly mistake proofing, in particular to a visual mistake proofing device for bearing shell assembly. BACKGROUND

[0002] The engine bearing shell is the part of the sliding bearing and the shaft neck contact, which is shaped as a semicircular cylindrical surface, very smooth, generally made of bronze, friction-reducing alloy and other wear-resistant materials, and in special cases, can be made of wood, engineering plastic or rubber. The bearing shell has two types of whole and split, and the whole bearing shell is usually called a shaft sleeve. The whole bearing shell has two types of no oil groove and oil groove. The bearing shell and the shaft neck are gap fitted, and generally do not rotate with the shaft.

[0003] The diameter of the crankshaft journal is very strict, and after the crankshaft is processed, the actual size of the journal is measured, and red and blue grouping is performed, and the size of the lower tolerance is blue group, and the size of the upper tolerance is red group, and is marked beside the corresponding journal with red and blue two kinds of paint pens.

[0004] During the engine assembly, the color of the crankshaft journal needs to be observed, and the corresponding color bearing shell is assembled, the blue group journal with the lower diameter needs to be installed with the blue bearing shell with a relatively thick thickness, and the red group journal with the upper diameter needs to be installed with the red bearing shell with a relatively thin thickness, so that the gap between the bearing shell and the crankshaft is in a suitable range, and the quality of the product is ensured. If the wrong is assembled, the thin bearing shell is assembled to the journal with the lower diameter, the gap is too large, and the engine is abnormal, the oil pressure is low and the like; otherwise, the thick bearing shell is assembled to the journal with the upper diameter, the gap is too small, the friction of the internal combustion engine is increased, the output performance is poor, and even the crankshaft is locked and the like serious faults are caused.

[0005] The existing bearing shell assembly work is mainly observed by the staff through the color mark on the crankshaft journal, the staff remembers the information of the journal with a certain color by the brain, and then takes the bearing shell to install on the corresponding journal, but in the actual operation process, the memory is blurred, the memory is wrong, and the memory is forgotten, and the like, so that the staff is difficult to install the bearing shell with the correct crankshaft grouping information in the subsequent operation process;

[0006] In order to reduce the risk of bearing shell installation error to a certain extent, under the premise of continuous development of technology, the two-dimensional code of the crankshaft is scanned in advance, the grouping information of the journal of the crankshaft is transmitted to the computer screen of the bearing shell assembly post, and the staff needs to look up at the screen while installing the bearing shell, but the situation of looking up the gear incorrectly is still easy to occur, and the frequent looking up of the screen affects the operation efficiency. SUMMARY

[0007] In order to overcome the deficiencies of the prior art, the embodiment of the present application provides a visual mistake-proof device for bearing assembly, which is characterized in that: a plurality of mark seats coaxially arranged inside are installed in the inside of the mark pipe, a plurality of positioning notches on the mark pipe are used to buckle the outside of the plurality of bearing seats, the shaft neck with diameter deviation up and down is controlled by the PLC system data to rotate the two mark posts on both sides of the installation notch, the red mark head on the mark post faces the opening of the installation notch, and the blue mark head is also used in the same way, so that the bearing assembly work can be carried out after the target thickness bearing is marked, and the staff does not need to remember.

[0008] The technical scheme adopted by the embodiment of the present application to solve the technical problem is:

[0009] A visual mistake-proof device for bearing assembly, comprising a mark pipe and a mark seat, the mark pipe is applied to an engine cylinder body;

[0010] The mark seat is provided with a plurality of mark seats, which are coaxially arranged in the inside of the mark pipe;

[0011] The side of the mark pipe is processed with a plurality of positioning notches, the other side of the mark pipe is processed with a plurality of installation notches, the mark seat comprises an installation ring, the inner wall of the installation ring is integrally formed with a disc, the centers of the two sides of the disc are integrally formed with a mounting sleeve ring, the inside of one end of the mark post is rotatably connected with a mark post, and the inside of one end of the mark post is rotatably connected with two mark heads;

[0012] Among them, the plurality of positioning notches and the plurality of installation notches are one-to-one corresponding and symmetrically arranged on both sides of the mark pipe axial section, the inside of the engine cylinder body is provided with a plurality of bearing seat for supporting bearing installation, the mark pipe is buckled on the outside of the plurality of bearing seats through the plurality of positioning notches, and the bearing passes through the inside of the mark pipe and is connected with the bearing seat in the installation notch; the two mark heads at one end of the mark post are respectively marked as red and blue, and the mark posts on both sides of one of the discs respectively extend into the inside of the two adjacent installation notches.

[0013] In a possible implementation, the surface of one end of the mark post is processed with a limiting ring groove, and the top of the mounting sleeve ring is threadedly connected with a limiting screw; one end of the limiting screw is a round rod, which extends into the inside of the limiting ring groove to limit the movement of the mark post in the inside of the mounting sleeve ring along the axial direction.

[0014] In a possible implementation, the inside of one end of the mark post is pinned with two metal blocks, and the bottom of the mounting sleeve ring is pin-connected with a magnet; the two metal blocks are symmetrically arranged at the top and bottom of the mark post axis, and the magnet and the metal block are attracted.

[0015] In a possible implementation manner, the outer part of the mounting ring is assembled and connected with a ring seat, both sides of the ring seat are provided with snap rings, and the inner wall of the marking pipe is processed with a plurality of positioning ring grooves; the two positioning ring grooves are used in combination, and the two positioning ring grooves in combination are located between the two adjacent mounting slots, the snap ring is connected to the inner part of the positioning ring groove, and the marking seat is fixed between the two snap rings.

[0016] In a possible implementation manner, the outer part of the marking pipe is provided with a control structure, the control structure controls the marking pipe to be arranged on one side of the engine cylinder block, and drives a plurality of marking seats to perform marking work before bearing installation on a plurality of bearing seats; the control structure can be in three modes of two-axis control, three-axis control and rotation control.

[0017] In a possible implementation manner, the control structure working in the two-axis control mode can include two end frames, one end of the two end frames is provided with a same connecting bottom plate, the bottom surface of both ends of the connecting bottom plate is assembled and connected with a hydraulic push rod B, the other end of the two end frames is assembled and fixed with both ends of the marking pipe, and one end of the hydraulic push rod B passes through the inner part of the connecting bottom plate and is assembled and fixed with the end frame.

[0018] In a possible implementation manner, the surface of one end of the two end frames is processed with a plurality of guide sleeves facing the other end, the top surface of both ends of the connecting bottom plate is processed with a plurality of guide rods A; the hydraulic push rod B controls the up-and-down movement of the two end frames, so that the plurality of guide sleeves on the end frame slides outside the plurality of guide rods A.

[0019] In a possible implementation manner, the bottom of the connecting bottom plate is provided with a supporting bottom plate, the top of both ends of the supporting bottom plate is assembled and connected with two angle plates A, the bottom of both ends of the connecting bottom plate is assembled and connected with angle plates B, the surface of one angle plate A at one end of the supporting bottom plate is assembled and connected with a hydraulic push rod A, and the surface of one end of the angle plate B is assembled and connected with a guide rod B; one end of the hydraulic push rod A passes through the inner part of one angle plate A and is assembled and fixed with the surface of the other end of the angle plate B, and the guide rod B is slidingly connected in the inner part of the other angle plate A.

[0020] In a possible implementation manner, the supporting bottom plate is composed of a U-shaped plate at the center and a one-shaped plate at both ends, the two one-shaped plates are integrally formed at both ends of the U-shaped plate, the connecting bottom plate covers the top of the supporting bottom plate, and when the marking pipe advances to one side of the engine cylinder block, the opening of the U-shaped plate on the supporting bottom plate is exposed.

[0021] In a possible implementation manner, the inner diameter of the marking pipe is greater than the outer diameter of the bearing installed on the bearing seat, and the horizontal projection surface shape of the plurality of mounting slots is isosceles trapezoidal.

[0022] The beneficial effects of the present application are:

[0023] Firstly, in the scheme, by installing the multiple mark seats with coaxial arrangement inside to the inside of the mark pipe, the multiple positioning slots on the mark pipe are buckled to the outside of the multiple bearing seats, based on the shaft neck of the diameter deviation and the downward deviation obtained by the PLC system in the previous process, the two mark columns on both sides of the installation slot are controlled to rotate by the PLC system data, so that the red mark head on the mark column faces the opening of the installation slot, and the blue mark head is also used in this way, which is convenient for marking the bearing bush with the target thickness, and the assembly work of the bearing bush is carried out without the need for the staff to remember;

[0024] Secondly, in the scheme, two metal blocks are embedded in the inside of one end of the mark column, and the two metal blocks are symmetrical about the axis of the mark column, and the magnet connected to the inside of the erected sleeve ring can make one mark head on the mark column face the opening of the installation slot, which is beneficial for color marking work, thereby providing a stable reference for the staff to install the bearing bush in the installation slot through the inside of the mark pipe to the bearing seat;

[0025] Thirdly, in the scheme, the hydraulic push rod A located at the top of the erection base plate is used to control the angle plate B assembled at the bottom of the connecting base plate to move away from the hydraulic push rod A, and the hydraulic push rod B assembled at the bottom of the connecting base plate is used to control the end frame to move towards the top, so that the mark pipe between the two end frames on one end is first moved up, and then pushed to one side of the engine cylinder body, so that the mark pipe is connected with the engine cylinder body to support the effect of marking the bearing seat on the engine cylinder body by the mark head on the mark column, and the stability is good. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole structure schematic view of the visual mistake proofing device for bearing assembly in use state;

[0027] Figure 2 It is a sectional view schematic view of the mark pipe of the visual mistake proofing device for bearing assembly;

[0028] Figure 3 It is a structure schematic view of the visual mistake proofing device for bearing assembly;

[0029] Figure 4 It is an enlarged schematic view of the visual mistake proofing device for bearing assembly and A part in 2;

[0030] Figure 5 It is a sectional view schematic view of the mark seat of the visual mistake proofing device for bearing assembly;

[0031] Figure 6A structure schematic view of a marking column of a visual mistake proofing device for bearing assembly;

[0032] Figure 7 An explosion schematic view of a marking seat of a visual mistake proofing device for bearing assembly;

[0033] Figure 8 A top view of a marking tube of a visual mistake proofing device for bearing assembly;

[0034] Figure 9 A partial structure schematic view of a control structure of a visual mistake proofing device for bearing assembly;

[0035] Figure 10 A connection structure schematic view of an engine cylinder and a marking tube of a visual mistake proofing device for bearing assembly.

[0036] The figure mark: 1, engine cylinder;2, marking tube;3, installation notch;4, positioning notch;5, guide rod A;6, erecting bottom plate;7, coupling bottom plate;8, hydraulic push rod A;9, angle plate A;10, guide sleeve;11, end frame;12, bearing seat;13, marking seat;131, installation ring;132, disc;133, erecting sleeve ring;134, ring seat;14, guide rod B;15, hydraulic push rod B;16, angle plate B;17, positioning ring groove;18, snap ring;19, marking head;20, marking column;21, limit screw;22, magnet;23, limit ring groove;24, metal block. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiment of the application is to solve the problems in the background art, and the general idea is as follows:

[0038] Embodiment 1

[0039] This embodiment introduces the specific structure of a visual mistake proofing device for bearing assembly, and specifically refers to Figures 1 to 8 、 Figure 10 , which comprises a marking tube 2 applied to an engine cylinder 1 and a plurality of marking seats 13 coaxially arranged inside the marking tube 2, a plurality of positioning notches 4 are processed on one side of the marking tube 2, a plurality of installation notches 3 are processed on the other side of the marking tube 2, the marking seat 13 comprises an installation ring 131, the inner wall of the installation ring 131 is integrally formed with a disc 132, the center of both sides of the disc 132 is integrally formed with an erecting sleeve ring 133, the inside of the erecting sleeve ring 133 is rotatably connected with a marking column 20, the inside of one end of the marking column 20 is embeddedly connected with two marking heads 19;

[0040] Wherein, by making the plurality of positioning notches 4 and the plurality of installation notches 3 one-to-one correspondence, and symmetrically arranged on both sides of the axial section of the marker tube 2, when the target bearing is installed to the plurality of bearing seats 12 inside the engine block 1, the marker tube 2 can be buckled outside the plurality of bearing seats 12 through the plurality of positioning notches 4, and the bearing is installed with the bearing seat 12 through the installation notch 3 inside the marker tube 2. In this process, the bearing will not fall into the inside of the engine block 1, which is beneficial to the corresponding assembly work;

[0041] At the same time, by marking the two marker heads 19 at one end of the marker column 20 as red and blue respectively (in order to simulate the way of conventional manual installation, the shaft necks with diameter up and diameter down at the bearing installation position are marked with red and blue two different colors, based on the diameter up and down of the shaft neck obtained by the PLC system in the previous process), when the marker column 20 on both sides of the disc 132 extends into the inside of the two adjacent installation notches 3, the marker column 20 can be rotated inside the mounting sleeve 133 to make the marker head 19 with corresponding color on the marker column 20 face the opening of the installation notch 3, providing indication for the operator, and the marker is not easy to lose;

[0042] In addition, by making the inner diameter of the marker tube 2 greater than the outer diameter of the bearing installed on the bearing seat 12, and the horizontal projection plane shape of the plurality of installation notches 3 is isosceles trapezoidal, when the bearing is installed to the bearing seat 12, interference can be avoided, and when the marker tube 2 is removed from one side of the engine block 1, the bearing which has been installed will not be taken away;

[0043] Secondly, in order to prevent the one end of the marker column 20 from being separated from the inside of the mounting sleeve 133, as shown in Figure 4 and Figure 5 The surface of one end of the marker column 20 is processed with a limiting ring groove 23, and the top of the mounting sleeve 133 is threadedly connected with a limiting screw 21 (one end is a round rod). By making the round rod part of the limiting screw 21 extend into the inside of the limiting ring groove 23, the movement of the marker column 20 in the axial direction inside the mounting sleeve 133 can be limited, so that the marker column 20 can be stably collected inside the mounting sleeve 133, and the rotation of the marker column 20 inside the mounting sleeve 133 is not affected;

[0044] Further, in order to make the marker head 19 with color indication at one end of the marker column 20 can stably face the opening of the installation notch 3, as shown in Figure 5As shown, the inner pin of one end of the marking column 20 is connected with two metal blocks 24, the bottom pin of the erection sleeve ring 133 is connected with the magnet 22 in a pinned manner, by symmetrically arranging the two metal blocks 24 at the top and bottom of the axis of the marking column 20, when the magnet 22 and the metal block 24 are attracted, any one marking head 19 can face the opening of the mounting slot 3, which is beneficial to control the rotation of the marking column 20 to switch the blue or red marking head 19 facing the opening of the mounting slot 3;

[0045] Further, in order to fix the entire marking seat 13 in the interior of the marking tube 2, the two marking columns 20 at both ends of the marking seat 13 are respectively extended to the interior of the two mounting slots 3, as shown in Figure 4 As shown, the outside of the mounting ring 131 is assembled and connected with the ring seat 134, the two sides of the ring seat 134 are provided with the snap ring 18, and the inner wall of the marking tube 2 is processed with a plurality of positioning ring grooves 17, by using the plurality of positioning ring grooves 17 in pairs and locating the two positioning ring grooves 17 in pairs between the two adjacent mounting slots 3, when the snap ring 18 is clamped to the interior of the positioning ring groove 17, the marking seat 13 can be fixed between the two snap rings 18.

[0046] The above design installs the plurality of marking seats 13 with coaxial arrangement in the interior of the marking tube 2 (limited by the two snap rings 18 clamped to the interior of the two positioning ring grooves 17 in the combined use state), by means of the plurality of positioning slots 4 on the marking tube 2, the positioning slot 4 is buckled to the outside of the plurality of tile seats 12, based on the diameter deviation and the neck deviation of the upper and lower deviations obtained by the PLC system in the last process, the two marking columns on both sides of the mounting slot are controlled to rotate by the PLC system data, the red marking head on the marking column faces the opening of the mounting slot (the neck of the diameter deviation of the lower deviation, the blue marking head 19 on the marking column 20 is used for marking at the corresponding position), and the target thickness of the bearing bush is marked accordingly;

[0047] At the same time, because the inner end of the marking column 20 is embedded with two coaxial metal blocks 24 symmetric about the axis of the marking column 20, by using the magnet 22 pinned to the interior of the erection sleeve ring 133 and any one metal block 24, one marking head 19 on the marking column 20 can stably face the opening of the mounting slot 3, which is beneficial to color marking work, thereby providing stable reference for the staff to install the bearing bush in the interior of the marking tube 2 to the tile seat 12 at the mounting slot 3, without the need for the staff to remember.

[0048] Embodiment 2:

[0049] Based on embodiment 1, the specific structure of the marking tube 2 is introduced, as shown in Figures 1 to 3 , Figure 9As shown, the outside of the marking pipe 2 is provided with a control structure which controls the marking pipe 2 to be placed on one side of the engine cylinder block 1 and drives a plurality of marking seats 13 to perform marking work on a plurality of bearing seats 12 before bearing installation;

[0050] Wherein, the way of the control structure controlling the marking pipe 2 to be placed on one side of the engine cylinder block 1 can be two-axis control, three-axis control and rotary control, so as to meet the operation demand when the bearing is installed into the bearing seat 12 inside the engine cylinder block 1 (mainly to provide enough operation space) and ensure that the marking pipe 2 is stably placed on one side of the marking pipe 2;

[0051] As shown in Figures 1 to 3 The control structure working in two-axis control mode can include two end frames 11, one end of the two end frames 11 is provided with the same coupling bottom plate 7, and the bottom surface of both ends of the coupling bottom plate 7 is assembled and connected with hydraulic push rods B15;

[0052] As shown in Figure 9 The bottom of the coupling bottom plate 7 is provided with a supporting bottom plate 6, the top of both ends of the supporting bottom plate 6 is assembled and connected with two angle plates A9, the bottom of both ends of the coupling bottom plate 7 is assembled and connected with angle plates B16, the surface of one angle plate A9 at one end of the supporting bottom plate 6 is assembled and connected with a hydraulic push rod A8, and the surface of one end of the angle plate B16 is assembled and connected with a guide rod B14;

[0053] Wherein, by assembling and fixing the other end of the two end frames 11 with both ends of the marking pipe 2, and by assembling and fixing one end of the hydraulic push rod B15 through the inside of the coupling bottom plate 7 with the end frame 11, the marking pipe 2 can be erected between the two end frames 11;

[0054] At the same time, in order to improve the stability of the hydraulic push rod B15 controlling the up and down movement of the marking pipe 2 through the end frame 11, as shown in Figure 2 and Figure 3 The surface of one end of the two end frames 11 is machined with a plurality of guide sleeves 10 facing the other end, and the top surface of both ends of the coupling bottom plate 7 is machined with a plurality of guide rods A5, in the process of controlling the up and down movement of the two end frames 11 by the hydraulic push rod B15, the plurality of guide sleeves 10 on the end frame 11 can slide outside the plurality of guide rods A5 respectively, so as to improve the stability of the up and down movement of the end frame 11;

[0055] Secondly, by assembling and fixing one end of the hydraulic push rod A8 through the inside of one angle plate A9 with the surface of one end of the angle plate B16, in the process of the hydraulic push rod A8 controlling the angle plate B16 and one angle plate A9 to move close to and away from each other, the guide rod B14 can be slidingly connected inside the other angle plate A9, so as to ensure the structural stability between the supporting bottom plate 6 and the coupling bottom plate 7;

[0056] In addition, in order to facilitate the staff to install the bearing shell to the bearing seat 12 on the engine cylinder body 1, the bearing shell is installed on the bearing seat 12 on the engine cylinder body 1 based on the embodiment, as shown in Figure 3 and Figure 9 The erection plate 6 is composed of a U-shaped plate at the center and a straight plate at both ends, and the two straight plates are integrally formed at both ends of the U-shaped plate. When the marking tube 2 is not connected to the engine cylinder body 1, the connecting plate 7 covers the top of the erection plate 6, and when the marking tube 2 advances to the side of the engine cylinder body 1, the opening of the U-shaped plate on the erection plate 6 is exposed, which is beneficial for the staff to perform the corresponding installation work by referring to the marking heads 19 on the plurality of marking columns 20 inside the marking tube 2.

[0057] The above design can make the marking tube 2 between the two end brackets 11 move upwards first, and then push to the side of the engine cylinder body 1, so that the marking tube 2 is connected to the engine cylinder body 1, to support the effect of marking the bearing seat 12 on the engine cylinder body 1 through the marking heads 19 on the marking columns 20, by using the hydraulic push rod A8 located at the top of the erection plate 6 to control the angle plate B16 assembled at the bottom of the connecting plate 7 to move away from the hydraulic push rod A8 (in this process, the guide rod B14 assembled on the angle plate B16 slides inside the angle plate A9 assembled at the top of the erection plate 6), and using the hydraulic push rod B15 assembled at the bottom of the connecting plate 7 to control the end bracket 11 to move towards the top (in this process, the guide sleeve 10 processed on the end bracket 11 slides outside the guide rod A5 processed at the top of the connecting plate 7).

[0058] It is worth noting that the embodiment adopts a two-axis control mode to connect the engine cylinder body 1 and the marking tube 2, and a third axis structure (including but not limited to a mechanical arm and a three-axis robot) can be additionally added on this basis;

[0059] Meanwhile, a turnover assembly can be used to turn the entire control structure by 90 degrees or 180 degrees, so that the engine cylinder body 1 and the marking tube 2 are connected, and finally realize the function of temporarily fixing the marking tube 2 to the side of the engine cylinder body 1 as in the embodiment.

[0060] Finally, it should be noted that: obviously, the above embodiment is only an example for clearly illustrating the present application, and is not a limitation on the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A visualisation mistake proofing device for bearing assembly, characterised in that, Include: Marking pipe (2) is applied to engine cylinder body (1); Marking seat (13) is provided with multiple, and is coaxial in the inside of marking pipe (2); The side of the marking pipe (2) is processed with multiple positioning notches (4), the other side of the marking pipe (2) is processed with multiple installation notches (3), the marking seat (13) includes an installation ring (131), the inner wall of the installation ring (131) is integrally formed with a disc (132), the center of both sides of the disc (132) is integrally formed with a bracket sleeve ring (133), the inside of the bracket sleeve ring (133) is rotatably connected with a marking column (20), the inside of one end of the marking column (20) is embeddedly connected with two marking heads (19); Wherein, multiple positioning notches (4) and multiple installation notches (3) are one-to-one corresponding and symmetrically arranged on both sides of the axial section of the marking pipe (2), the inside of the engine cylinder body (1) is provided with multiple bearing pad seats (12) for supporting bearing pads, the marking pipe (2) is buckled outside multiple bearing pad seats (12) through multiple positioning notches (4), and the bearing pad is connected with the bearing pad seat (12) by penetrating the inside of the marking pipe (2) through the installation notch (3); The two marking heads (19) at one end of the marking column (20) are respectively marked as red and blue, and the marking columns (20) on both sides of one disc (132) respectively extend into the inside of two adjacent installation notches (3); Wherein, the outside of the installation ring (131) is assembledly connected with a ring seat (134), both sides of the ring seat (134) are provided with snap rings (18), and multiple positioning ring grooves (17) are processed at the inner wall of the marking pipe (2); Wherein, multiple positioning ring grooves (17) are used in pairs, and two positioning ring grooves (17) used in combination are located between two adjacent installation notches (3), and the snap ring (18) is clamped into the inside of the positioning ring groove (17), so that the marking seat (13) is fixed between two snap rings (18); Wherein, the outside of the marking pipe (2) is provided with a control structure, which controls the marking pipe (2) to be placed on one side of the engine cylinder body (1), and drives multiple marking seats (13) to perform marking work before bearing pad installation on multiple bearing pad seats (12); Wherein, the way that the control structure controls the marking pipe (2) to be placed on one side of the engine cylinder body (1) is three-axis control, three-axis control and rotation control.

2. A visualisation mistake proofing device for bearing assembly as claimed in claim 1 wherein: The surface of one end of the marking column (20) is processed with a limiting ring groove (23), and the top of the bracket sleeve ring (133) is threadedly connected with a limiting screw (21); Wherein, one end of the limiting screw (21) is a round rod, the round rod extends into the inside of the limiting ring groove (23), and the movement of the marking column (20) in the inside of the bracket sleeve ring (133) along the axial direction is limited.

3. A visualisation mistake proofing device for bearing assembly as claimed in claim 1 wherein: The inside of one end of the marking column (20) is pinned with two metal blocks (24), and the bottom of the bracket sleeve ring (133) is pin-connected with a magnet (22). Two metal blocks (24) are symmetrically arranged at the top and bottom of the axis of the marker column (20), and the magnet (22) and the metal block (24) are attracted to each other.

4. A visualisation mistake proofing device for bearing assembly as claimed in claim 1 wherein: The control structure operating in a two-axis control mode comprises two end frames (11), one end of the two end frames (11) is provided with a same coupling bottom plate (7), and the bottom surface of the two ends of the coupling bottom plate (7) is assembled and connected with hydraulic push rods B (15); Wherein, the other end of the two end frames (11) is respectively assembled and fixed with the two ends of the marker tube (2), and one end of the hydraulic push rod B (15) passes through the inside of the coupling bottom plate (7) and is assembled and fixed with the end frame (11).

5. A visualisation mistake proofing device for bearing assembly as claimed in claim 4 wherein: The surface of one end of the two end frames (11) is processed with a plurality of guide sleeves (10) facing the other end, and the top surface of the two ends of the coupling bottom plate (7) is processed with a plurality of guide rods A (5); Wherein, the hydraulic push rod B (15) controls the up and down movement of the two end frames (11), so that the plurality of guide sleeves (10) on the end frame (11) respectively slide with the outside of the plurality of guide rods A (5).

6. A visualisation mistake proofing device for bearing assembly as claimed in claim 4 wherein: The bottom of the coupling bottom plate (7) is provided with a supporting bottom plate (6), the top of the two ends of the supporting bottom plate (6) is assembled and connected with two angle plates A (9), the bottom of the two ends of the coupling bottom plate (7) is assembled and connected with angle plates B (16), and the surface of one angle plate A (9) at one end of the supporting bottom plate (6) is assembled and connected with a hydraulic push rod A (8), and the surface of one end of the angle plate B (16) is assembled and connected with a guide rod B (14). Wherein, one end of the hydraulic push rod A (8) passes through the inside of one angle plate A (9) and is assembled and fixed with the surface of the other end of the angle plate B (16), and the guide rod B (14) is slidingly connected in the inside of the other angle plate A (9).

7. A visualisation mistake proofing device for bearing assembly as claimed in claim 6 wherein: The supporting bottom plate (6) is composed of a U-shaped plate at the center and a one-piece plate at both ends, the two one-piece plates are integrally formed at both ends of the U-shaped plate, the coupling bottom plate (7) covers the top of the supporting bottom plate (6), and when the marker tube (2) advances to the side of the engine cylinder (1), the opening of the U-shaped plate on the supporting bottom plate (6) is exposed.

8. A visualisation mistake proofing device for bearing assembly as claimed in claim 1 wherein: The inner diameter of the marker tube (2) is greater than the outer diameter of the bearing installed on the bearing seat (12), and the horizontal projection plane shape of the plurality of mounting slots (3) is isosceles trapezoidal.

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