Positioning device for assembling connecting rod bearing

Abstract

The utility model discloses a positioning device for assembling a connecting rod bearing, which comprises a moving trolley, a support and a mounting plate, a platform capable of rotating is rotatably mounted on the mounting plate, a locking component capable of being unlocked is mounted on one side of the mounting plate and used for locking the platform, and two groups of positioning components are mounted on the platform and used for positioning the platform. And each group of positioning parts comprises a first positioning seat and a second positioning seat, and the first positioning seat and the second positioning seat are correspondingly and fixedly mounted and mounted on the platform in a floating manner respectively. The rotary platform is adopted, the two sets of positioning components are arranged on the rotary platform, each set of positioning component comprises the two positioning seats, the positioning seats are matched with a press machine to complete press fitting of the bearing, and during press fitting, one fixed positioning seat can stably and reliably support and position the small end of the connecting rod, so that press fitting is convenient. And the other floatable positioning seat can perform floating positioning on the large end of the connecting rod, so that the stability and the safety of bearing assembly are ensured, orderly press-fitting of a plurality of bearings at a time can be realized, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod bearing assembly, in particular to a positioning device for connecting rod bearing assembly. Background Art

[0002] As a transmission component in a car engine, the connecting rod connects the piston and the crankshaft, transmits the force on the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod is mainly composed of three parts. The part connected to the piston pin is called the small end of the connecting rod, the part connected to the crankshaft is called the big end of the connecting rod, and the rod connecting the small end and the big end is called the connecting rod shaft.

[0003] During the production and processing of connecting rods, it is necessary to assemble bearings at the big end of the connecting rod to achieve matching connection with the crank pin to reduce crank pin wear. At present, the bearings are assembled by manual hammering, that is, the assembler uses a rubber hammer to knock the bearing into the big end of the connecting rod. However, due to the uneven weight at both ends of the connecting rod, there are great safety hazards in the hammering process and the efficiency is low. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and shortcomings of the prior art and to provide a connecting rod bearing assembly positioning device, which cooperates with a press machine to complete the press-fitting of the bearing to ensure the stability and safety of the bearing assembly, and can realize the orderly press-fitting of multiple bearings at a time to improve the assembly efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A positioning device for connecting rod bearing assembly, comprising a moving trolley, a bracket fixedly supported on the moving trolley and a mounting plate fixed on the bracket, characterized in that a rotatable platform is rotatably mounted on the mounting plate, an unlockable locking component is mounted on one side of the mounting plate for locking the platform, two groups of positioning components are mounted on the platform, each group of positioning components comprises a first positioning seat and a second positioning seat, and the first positioning seat and the second positioning seat are respectively fixedly mounted and floatingly mounted on the platform.

[0007] Furthermore, the platform is rotatably mounted on the mounting plate via a slewing bearing seat, and the outer ring and inner ring of the slewing bearing seat are fixedly connected to the upper surface of the mounting plate and the lower surface of the platform respectively.

[0008] Furthermore, a lower positioning through hole is provided on one side of the mounting plate, and upper positioning through holes are provided on both sides of the platform.

[0009] Furthermore, the locking component includes a frame-shaped seat, a positioning pin, a pressing plate and a first spring. The frame-shaped seat is fixedly connected to one side of the lower surface of the mounting plate. The positioning pin passes through the frame-shaped seat and the lower positioning through hole from bottom to top, and is inserted into the corresponding upper positioning through hole. The pressing plate is fixedly mounted on the positioning pin, and the upper surface of the pressing plate abuts against the inner top surface of the frame-shaped seat. The first spring is mounted on the outside of the positioning pin, and the two ends of the first spring respectively abut against the lower surface of the pressing plate and the inner bottom surface of the frame-shaped seat.

[0010] Furthermore, the mounting plate is provided with a plurality of first step holes which are smaller at the top and larger at the bottom, and the plurality of first step holes are distributed circumferentially.

[0011] Furthermore, the first positioning seat includes a first convex block fixedly connected to the platform, and the second positioning seat includes a second convex block. The second convex block is respectively provided with a plurality of second step holes which are smaller at the top and larger at the bottom. The upper hole of each second step hole is a screw hole. A bolt passes through the corresponding first step hole and the lower hole of the second step hole from bottom to top in sequence, and is screwed into the upper hole of the second step hole. The nut end of the bolt abuts against the step surface of the first step hole, and a second spring is mounted on the outside of the bolt. The two ends of the second spring respectively abut against the step surface of the second step hole and the upper surface of the mounting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model adopts a rotatable platform and arranges two groups of positioning components thereon, each group of positioning components includes two positioning seats, which cooperate with the work of a press machine to complete the press-fitting of the bearing. During the press-fitting, a fixed positioning seat can stably and reliably support and position the small end of the connecting rod, and the other floating positioning seat can float and position the large end of the connecting rod, thereby ensuring the stability and safety of the bearing assembly, and being able to realize the orderly press-fitting of multiple bearings at a time, thereby improving the assembly efficiency; in addition, a locking component is used to lock the platform, and after completing the press-fitting of the bearing of one connecting rod, the locking is released, and the platform is rotated to press-fit the bearing of the next connecting rod, which is convenient and efficient; in addition, the platform is arranged on a mobile trolley through a bracket, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the mounting plate, the slewing support seat and the locking component in the utility model.

[0016] Figure 3 It is a structural schematic diagram of the locking component in the utility model.

[0017] Figure 4 It is a schematic structural diagram of the mounting plate, the first positioning seat and the second positioning seat in the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-4 A positioning device for assembling a connecting rod bearing comprises a moving trolley 1, a bracket 2 fixedly supported on the moving trolley 1 and a mounting plate 3 fixed on the bracket 2, a rotatable platform 4 is rotatably mounted on the mounting plate 3, an unlockable locking component 5 is mounted on one side of the mounting plate 3 for locking the platform 4, two groups of positioning components are mounted on the platform 4, each group of positioning components comprises a first positioning seat 6 and a second positioning seat 7, and the first positioning seat 6 and the second positioning seat 7 are respectively fixedly mounted and floatingly mounted on the platform 4.

[0020] In the utility model, the platform 4 is rotatably mounted on the mounting plate 3 via a slewing support seat 15, and the outer ring and the inner ring of the slewing support seat 15 are fixedly connected to the upper surface of the mounting plate 3 and the lower surface of the platform 4 respectively, so as to realize the rotatable mounting of the platform 4 on the mounting plate 3.

[0021] In the utility model, a lower positioning through hole 8 is provided on one side of the mounting plate 3 , and upper positioning through holes 9 are provided on both sides of the platform 4 .

[0022] In the present utility model, the locking component 5 includes a frame-shaped seat 51, a positioning pin 52, a pressing piece 53 and a first spring 54. The frame-shaped seat 51 is fixedly connected to one side of the lower surface of the mounting plate 3. The positioning pin 52 passes through the frame-shaped seat 51 and the lower positioning through hole 8 from bottom to top, and is inserted into the corresponding upper positioning through hole 9. The pressing piece 53 is fixedly sleeved on the positioning pin 52, and the upper surface of the pressing piece 53 abuts against the inner top surface of the frame-shaped seat 51. The first spring 54 is sleeved on the outside of the positioning pin 52, and the two ends of the first spring 54 respectively abut against the lower surface of the pressing piece 53 and the inner bottom surface of the frame-shaped seat 51.

[0023] Therefore, when assembling the bearing, the first spring 54 stretches naturally, and its two ends respectively abut against the lower surface of the pressing plate 53 and the inner bottom surface of the frame seat 51, so that the upper surface of the pressing plate 53 abuts against the inner top surface of the frame seat 51. At this time, the positioning pin 52 passes through the frame seat 51 and the lower positioning through hole 8 from bottom to top, and is inserted into the corresponding upper positioning through hole 9 to lock the platform 4.

[0024] After completing the assembly of the bearing, hold the lower end of the positioning pin 52 and pull the positioning pin 52 downward to move it downward. After disengaging from the upper positioning through hole 9 and the corresponding lower positioning through hole 8 from top to bottom, release the lock on the platform 4 and rotate the platform 4. At this time, the pressing sheet 53 moves downward with the positioning pin 52, forcing the first spring 54 to compress.

[0025] In the utility model, three first step holes 10 with a smaller upper part and a larger lower part are respectively arranged on the mounting plate 3, and the three first step holes 10 are distributed in the circumferential direction.

[0026] In the utility model, the first positioning seat 6 includes a first convex block fixedly connected to the platform, and the second positioning seat 7 includes a second convex block. The second convex block 7 is respectively provided with three second step holes 11 with a small upper part and a large lower part around it. The upper hole of each second step hole 11 is a screw hole. A bolt 12 passes through the corresponding first step hole 10 and the lower hole of the second step hole 11 from bottom to top in sequence, and is screwed into the upper hole of the second step hole 11. The nut end of the bolt 12 abuts against the step surface of the first step hole 10. The outside of the bolt 12 is covered with a second spring 13, and the two ends of the second spring 13 respectively abut against the step surface of the second step hole 11 and the upper surface of the mounting plate 3.

[0027] Therefore, when the three second springs 13 are naturally stretched, a buffer gap is provided between the bottom surface of the second convex block 7 and the upper surface of the mounting plate 3 under the elastic support of the three second springs 13 .

[0028] When assembling the bearing, after the second convex block 7 positions the large end of the connecting rod, the ram of the press moves downward to gradually press the bearing onto the large end of the connecting rod. During this process, the second convex block 7 gradually moves downward under the squeezing effect of the ram, and the bolt 12 gradually moves downward accordingly. The nut end of the bolt 12 disengages from the step surface of the first step hole 10 and moves downward until the bottom surface of the second convex block 7 contacts the upper surface of the mounting plate 3. At this time, the second spring 13 is compressed.

[0029] After the bearing is assembled, the pressure head of the press moves upward, the second spring 13 stretches and resets, and under the lifting action of the second spring 13, the second convex block 7 gradually moves upward, and the bolt 12 gradually moves upward until the nut end of the bolt 12 abuts against the step surface of the first step hole 10 again. At this time, the second spring 13 naturally stretches and completes the reset.

[0030] It should be noted that the utility model can fix a material frame 14 on the mobile trolley 1 for placing parts to be assembled, including connecting rods, bearings, etc. When assembling bearings, on-site assembly workers can directly take out the above-mentioned parts to be assembled from the material frame 14, thereby saving time for taking out parts and further helping to improve assembly efficiency.

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] When assembling the bearings, two connecting rods are taken out from the material frame 14 at the same time, and the two connecting rods are positioned by two sets of positioning components respectively. Among them, the first positioning seat 6 can stably and reliably support and position the small end of the connecting rod, and the second positioning seat 7 can float and position the large end of the connecting rod.

[0033] Move the mobile trolley 1 to the bottom of the ram of the press, so that a connecting rod with a bearing to be press-fitted moves to the bottom of the ram of the press, and then start the press. The ram of the press moves downward, and gradually presses the bearing onto the large end of the connecting rod. In this process, the second convex block 7 gradually moves downward under the squeezing effect of the ram, and the bolt 12 gradually moves downward accordingly. The nut end of the bolt 12 disengages from the step surface of the first step hole 10 and moves downward until the bottom surface of the second convex block 7 contacts the upper surface of the mounting plate 3. At this time, the second spring 13 is compressed.

[0034] After the bearing is assembled, the pressure head of the press moves upward, the second spring 13 stretches and resets, and under the lifting action of the second spring 13, the second convex block 7 gradually moves upward, and the bolt 12 gradually moves upward until the nut end of the bolt 12 again abuts against the step surface of the first step hole 10. At this time, the second spring 13 naturally stretches and completes the reset.

[0035] Next, you can remove the connecting rod with the bearing pressed in.

[0036] Then, hold the lower end of the positioning pin 52 and pull the positioning pin 52 downward to move it downward. After disengaging from the upper positioning through hole 9 and the corresponding lower positioning through hole 8 from top to bottom, release the lock on the platform 4 and rotate the platform 4 so that the connecting rod of the other bearing to be pressed moves to the bottom of the pressing head of the press. At this time, the pressing plate 53 moves downward with the positioning pin 52, forcing the first spring 54 to compress.

[0037] Then, the positioning pin 52 is released, the first spring 54 is stretched and reset, and under the lifting action of the first spring 54, the pressing piece 53 gradually moves upward until its upper surface abuts against the inner top surface of the frame seat 51 again. At this time, the positioning pin 52 passes through the frame seat 51 and the lower positioning through hole 8 from bottom to top, and then is inserted into the corresponding upper positioning through hole 9 again to lock the platform 4. At this time, the first spring 54 is naturally stretched and reset is completed.

[0038] Then, according to the above assembly process, the bearing press-fitting is completed.

[0039] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0040] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A connecting rod bearing assembly positioning device, comprising a moving trolley, a bracket fixedly supported on the moving trolley, and a mounting plate fixed on the bracket, characterized in that: A rotatable platform is rotatably installed on the mounting plate, and an unlockable locking component is installed on one side of the mounting plate for locking the platform. Two groups of positioning components are installed on the platform, and each group of positioning components includes a first positioning seat and a second positioning seat. The first positioning seat and the second positioning seat are respectively fixedly installed and floatingly installed on the platform.

2. A connecting rod bearing assembly positioning device according to claim 1, characterized in that: The platform is rotatably mounted on the mounting plate via a slewing bearing seat, and the outer ring and the inner ring of the slewing bearing seat are fixedly connected to the upper surface of the mounting plate and the lower surface of the platform respectively.

3. A connecting rod bearing assembly positioning device according to claim 1, characterized in that: A lower positioning through hole is provided on one side of the mounting plate, and upper positioning through holes are provided on both sides of the platform.

4. A connecting rod bearing assembly positioning device according to claim 3, characterized in that: The locking component includes a frame-shaped seat, a positioning pin, a pressing piece and a first spring. The frame-shaped seat is fixedly connected to one side of the lower surface of the mounting plate. The positioning pin passes through the frame-shaped seat and the lower positioning through hole in sequence from bottom to top, and is inserted into the corresponding upper positioning through hole. The pressing piece is fixedly sleeved on the positioning pin, and the upper surface of the pressing piece abuts against the inner top surface of the frame-shaped seat. The first spring is sleeved on the outside of the positioning pin, and the two ends of the first spring respectively abut against the lower surface of the pressing piece and the inner bottom surface of the frame-shaped seat.

5. A connecting rod bearing assembly positioning device according to claim 1, characterized in that: The mounting plate is respectively provided with a plurality of first step holes which are smaller at the top and larger at the bottom, and the plurality of first step holes are distributed in the circumferential direction.

6. A connecting rod bearing assembly positioning device according to claim 5, characterized in that: The first positioning seat includes a first convex block fixedly connected to the platform, and the second positioning seat includes a second convex block. The second convex block is respectively provided with a plurality of second step holes which are smaller at the top and larger at the bottom. The upper hole of each second step hole is a screw hole. A bolt passes through the corresponding first step hole and the lower hole of the second step hole from bottom to top in sequence, and is screwed into the upper hole of the second step hole. The nut end of the bolt abuts against the step surface of the first step hole. A second spring is mounted on the outside of the bolt. The two ends of the second spring respectively abut against the step surface of the second step hole and the upper surface of the mounting plate.

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