Rail transit bearing fitting device

Abstract

The utility model discloses a bearing fitting device for rail transit. The bearing fitting device comprises a main frame, a lifting mechanism, a tensioning mechanism, a descending mechanism, a positioning mechanism and a control unit, a descending mechanism is mounted on the bottom surface of the working table, and a lifting mechanism, a tensioning mechanism and a positioning mechanism are sequentially arranged from top to bottom; and the control unit is used for controlling the lifting mechanism, the descending mechanism, the tensioning mechanism and the positioning mechanism. When the lifting mechanism works, the tensioning sleeve is driven to stretch into the middle of the bearing inner assembly, the tensioning air cylinder works to enable the tensioning sleeve to be tensioned towards the two sides, then the lifting mechanism is started again to lift the upper side part of the bearing inner assembly, and then the descending mechanism is controlled to enable the jacking disc and the lower side part of the bearing inner assembly to move downwards and descend to the position below a working table top. And then the worker pushes the bearing outer ring to the positioning mechanism and controls the lifting air cylinder to descend and the jacking air cylinder to ascend again, so that the upper part and the lower part of the bearing inner assembly are respectively put into the bearing outer ring, and the fitting operation is completed.

Description

Technical Field

[0001] The utility model belongs to the field of bearing maintenance, and in particular relates to a rail transit bearing sleeve assembly device. Background Art

[0002] After a certain mileage, railway vehicles need to remove and inspect the bearings to maintain the performance of the bearings. The main process is: first disassemble and heat the bearings to be inspected, and then visually inspect the inner and outer rings, rolling elements, and cages of the bearings. If there are minor injuries, the corresponding components need to be polished with oilstone or scouring pad; after polishing, the inner and outer components of the bearings are placed separately (the inner components are generally not disassembled); after the bearing temperature is the same as the maintenance environment temperature (temperature has a greater impact on the size of the bearing components), the size of the inner components and outer rings are measured and checked; the inner components and outer rings with qualified sizes should be assembled in the original set in the state when they were disassembled.

[0003] At present, most of the assembly work is done manually, which is very labor-intensive and inefficient. When assembling, first place a set of inner components on the work surface, then lift the outer ring of the bearing, put it on the outside of the inner components, put in the middle spacer, and finally take the inner component on the other side and put it into the outer ring; this process requires frequent handling of the inner components and outer rings of the bearing. During batch maintenance, the labor intensity is high, which increases the operating burden of the workers. Therefore, a assembling device is needed to solve the problem of high labor intensity and low efficiency of assembling work during bearing maintenance. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a rail transit bearing assembly device, which completes the assembly of the inner components and outer ring of the bearing through the cooperation of a lifting mechanism, a tensioning mechanism, a lowering mechanism, and a positioning mechanism, thereby greatly reducing the intensity of the workers.

[0005] A rail transit bearing sleeve device, comprising a main frame, a lifting mechanism, a tensioning mechanism, a lowering mechanism, a positioning mechanism and a control unit; the main frame is installed on the upper surface of a work surface, the lowering mechanism is installed on the lower surface, and a sleeve hole is opened on the work surface at a position corresponding to the lowering mechanism; the main frame is sequentially provided with a lifting mechanism, a tensioning mechanism and a positioning mechanism from top to bottom;

[0006] The top surface of the main frame is a lifting mechanism mounting plate, and a tensioning mechanism connecting plate is horizontally arranged below the lifting mechanism mounting plate;

[0007] The lifting mechanism comprises a lifting cylinder, a guide column and a floating joint. The lifting cylinder is provided with guide columns on both sides. The lifting cylinder and the top of the guide column are fixedly connected by a guide column connecting plate. The bottom of the lifting cylinder passes through the lifting mechanism mounting plate and is fixedly connected to the top of the floating joint. The bottom of the guide column passes through the lifting mechanism mounting plate and is fixedly connected to the tensioning mechanism connecting plate. The bottom of the floating joint is connected to the tensioning mechanism connecting plate.

[0008] The tensioning mechanism comprises a tensioning cylinder and a tensioning sleeve, wherein the top of the tensioning cylinder is fixedly arranged at the bottom of the tensioning mechanism connecting plate, and the bottom of the tensioning cylinder is fixedly connected to the tensioning sleeve; the tensioning sleeve is composed of two tensioning sleeve bodies arranged opposite to each other, and the tensioning sleeve bodies are respectively fixedly connected to the finger clamps at the bottom of the tensioning cylinder, so that the tensioning sleeve bodies can be driven to translate relative to / backward under the action of the tensioning cylinder; the outer wall of the tensioning sleeve body has a protruding flange for inserting into the gap between the upper inner ring of the bearing inner component and the middle spacer ring, so that the upper inner ring of the bearing inner component can be lifted / reset along with the lifting mechanism;

[0009] The positioning mechanism comprises a positioning cylinder and two positioning blocks, wherein the positioning block is located below the tension sleeve, and the contour formed by the two positioning blocks is adapted to the outer contour of the bearing outer ring; and the positioning blocks are respectively connected to the positioning cylinder;

[0010] The descending mechanism includes a fixed seat, a lifting cylinder, a lifting plate and a limiting column. The fixed seat is fixed to the bottom surface of the work table by a plurality of limiting columns. The lifting cylinder is fixed to the top surface of the fixed seat. A lifting plate is arranged on the top of the lifting cylinder. The outer contour and position of the lifting plate are adapted to the inner contour and position of the fitting hole. An inner bearing assembly is placed on the lifting plate, which is used to be flush with or lower than the upper surface of the work table when driven by the lifting cylinder.

[0011] The lifting mechanism, lowering mechanism, tensioning mechanism and positioning mechanism are electrically connected to a control unit, and the control unit is used to control the lifting mechanism and the lowering mechanism to rise / fall, control the tensioning mechanism to expand / retract, and control the position adjustment of the positioning mechanism.

[0012] Furthermore, the lowering of the lifting cylinder can make the tension sleeve body of the tensioning mechanism extend into the inner component of the bearing, and the lifting of the lifting cylinder can lift the upper part of the inner component of the bearing;

[0013] The operation of the tensioning cylinder can make the tensioning sleeve body move relative to / opposite to each other, and the operation of the positioning cylinder can make the outer ring of the bearing coaxial with the lifting plate and the inner components of the bearing to facilitate the assembly; the lifting cylinder can raise / lower the lifting plate to be flush with the work surface / lower it below the work surface.

[0014] Furthermore, the guide column is sequentially sleeved with a spring and a guide sleeve from the inside to the outside, so as to facilitate the positioning and support of the lifting mechanism and the tensioning mechanism.

[0015] Furthermore, the lifting mechanism also includes a position sensor, which is located on the main frame and is used to detect the position of the lifting mechanism mounting plate to determine the height to which the lifting mechanism is lowered, and the position sensor is electrically connected to the control unit.

[0016] Furthermore, the tensioning cylinder is a parallel finger-clamping cylinder, including finger-clamping transmission parts arranged in parallel, and the top of each tensioning sleeve body 21 is fixedly connected to the finger-clamping transmission part corresponding to its position.

[0017] Furthermore, air inlets on both sides of the tensioning cylinder, the lifting cylinder, the jacking cylinder and the positioning cylinder are all provided with solenoid valves, and the solenoid valves are controlled by a control unit.

[0018] Furthermore, the outer side of the tension sleeve body is wrapped with nylon, and a protruding flange is provided at the lower end of the tension sleeve body, and its cross section has a tip bevel structure.

[0019] Furthermore, a plurality of bases are fixedly connected to the bottom of the work surface; the bases are frames constructed of aluminum profiles.

[0020] Compared with the prior art, the beneficial effects brought by the technical solution of the utility model are:

[0021] The rail transit bearing assembly device completes the assembly of the inner components and the outer ring of the bearing through the cooperation of the lifting mechanism, the tensioning mechanism, the lowering mechanism and the positioning mechanism, which greatly reduces the intensity of the workers, and the mechanism is compact and has a high degree of automation.

[0022] The lifting mechanism and the tensioning mechanism work closely together. When the lifting mechanism is working, it drives the tensioning mechanism to extend the tensioning sleeve into the middle of the bearing inner component. Then the tensioning cylinder works to tighten the tensioning sleeve to both sides. Then the lifting mechanism is started again to lift the upper part of the bearing inner component, and then the descending mechanism is controlled to move the lifting plate together with the lower part of the bearing inner component downward and descend below the work table. Then the personnel push the outer ring of the bearing to the positioning mechanism, and control the lifting cylinder to descend and the lifting cylinder to rise again, so that the upper and lower parts of the bearing inner component are respectively placed in the bearing outer ring to complete the fitting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of the rail transit bearing assembly device;

[0024] Figure 2 yes Figure 1 The front view of the rail transit bearing assembly shown;

[0025] Figure 3 It is a schematic diagram showing a lifting mechanism, a tensioning mechanism, a lowering mechanism, and a positioning mechanism;

[0026] Figure 4 yes Figure 1 The side view of the rail transit bearing assembly shown;

[0027] Figure 5 It is a schematic diagram of the tensioning mechanism.

[0028] in,

[0029] 1: base; 2: work surface; 3: bearing outer ring; 4: main frame; 5: tensioning sleeve; 6: tensioning cylinder; 7: tensioning mechanism connecting plate; 8: floating joint; 9: position sensor; 10: guide column; 11: lifting cylinder; 12: lifting mechanism mounting plate; 13: bearing inner component; 14: lifting cylinder; 15: fixing seat; 16: positioning block; 17: positioning cylinder; 18: lifting plate; 19: guide column connecting plate; 20: limit column; 21: tensioning sleeve body. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The described specific embodiments are only used to explain the present invention and are not intended to limit the present invention.

[0031] like Figure 1-4 As shown, a rail transit bearing assembly device includes a main frame 4, a lifting mechanism, a tensioning mechanism, a lowering mechanism, a positioning mechanism and a control unit. The rail transit bearing assembly device is installed on a work surface 2, and a plurality of bases 1 are fixedly connected to the bottom of the work surface; the base 1 is a frame built of aluminum profiles. The main frame 4 is fixedly installed on the upper surface of the work surface, and a lowering mechanism is installed on the bottom surface of the work surface, and a assembly hole is opened on the work surface at a position corresponding to the lowering mechanism, and the diameter of the assembly hole is smaller than the outer ring diameter of the bearing for assembly. The lifting mechanism, the tensioning mechanism and the positioning mechanism are installed on the main frame 4 from top to bottom, and the lifting mechanism, the lowering mechanism, the tensioning mechanism and the positioning mechanism are electrically connected to the control unit, and the action of each mechanism is controlled by a solenoid valve.

[0032] Specifically, the top surface of the main frame 4 is a lifting mechanism mounting plate 12, and a tensioning mechanism connecting plate 7 is horizontally arranged below the lifting mechanism mounting plate 12. The lifting mechanism is installed on the upper surface of the lifting mechanism mounting plate 12, and the lifting mechanism includes a lifting cylinder 11, a guide column 10, a floating joint 8, a position sensor 9, a tensioning mechanism connecting plate 7, a guide column spring and a guide column connecting plate; the lifting cylinder 11 is fixedly installed on the lifting mechanism mounting plate 12, and two mounting holes are also opened on the lifting mechanism mounting plate 12, and the two mounting holes are located on both sides of the lifting cylinder 11 for fixing the guide column sleeve; the guide column bearing is installed with a guide column 10 and a spring is installed. The tops of the two guide columns are connected by a guide column connecting plate 19, and the tensioning mechanism connecting plate 7 is fixedly arranged at the bottom of the two guide columns 10. The top of the lifting cylinder 11 is fixedly connected to the guide column connecting plate 19, and the bottom of the lifting cylinder 11 passes through the lifting mechanism mounting plate 12 and is fixedly connected to the floating joint 8, and the bottom of the floating joint 8 is fixedly connected to the tensioning mechanism connecting plate 7. The air inlets on both sides of the lifting cylinder 11 are connected to electromagnetic valves, which are controlled by a control unit. A position sensor 9 is arranged on a sensor bracket of the main frame, and is used to detect the position of the lifting mechanism mounting plate so as to monitor the position of the lifting mechanism descent, and the position sensor 9 is electrically connected to the control unit.

[0033] like Figure 5 As shown, the tensioning mechanism is located at the lower side of the lifting mechanism, including a tensioning cylinder 6, a tensioning sleeve 5 and a tensioning sleeve slide rail. The top of the tensioning cylinder 6 is installed on the bottom of the tensioning mechanism connecting plate 7, and the bottom of the tensioning cylinder 6 is connected to the tensioning sleeve 5. The tensioning cylinder 6 is a parallel finger clamp cylinder, including a parallel finger clamp transmission part and a spring. The air inlets on both sides of the tensioning cylinder 6 are connected to the solenoid valve, and the solenoid valve is controlled by the control unit.

[0034] The tension sleeve 5 is composed of a tension sleeve body 21 arranged opposite to each other, the outer side of the tension sleeve body 21 is wrapped with nylon, and a protruding flange is arranged at the lower end of the tension sleeve body 21, the flange gradually shrinks from the tension sleeve body 21 to the free end, and its cross section has a tip bevel structure. The tension sleeve body 21 is fixedly connected to the finger clamp transmission part of the tension cylinder 6 by bolts. When air is introduced into the upper side of the tensioning cylinder 6, the activity in the cylinder moves, thereby driving the parallel finger clamps on both sides to translate in opposite directions, driving the relatively arranged tension sleeve body 21 to translate in opposite directions; the tip of the lower edge of the tension sleeve body 19 is inserted into the gap between the upper inner ring and the middle spacer ring of the bearing inner component 13 at an angle, and the left and right parts of the tension sleeve body 19 embrace the upper inner ring of the bearing inner component 13 outward, and the nylon coating on the outer wall of the tension sleeve body 19 ensures that the tension sleeve 5 does not damage the surface of the bearing inner ring. At this time, the guide rod of the lifting cylinder 11 contracts to lift the upper inner ring of the bearing inner component 13. When the pressure inside the cylinder drops, the finger clamps are reset under the action of the spring, driving the tension sleeve body 21 to reset.

[0035] The positioning mechanism includes a positioning cylinder 17 and two positioning blocks 16. The positioning blocks 16 are arc-shaped and are located below the tension sleeve 5. The contour formed by the two positioning blocks 16 is adapted to the outer contour of the bearing outer ring 3. The positioning blocks 16 are respectively connected to the positioning cylinders 17, and the positioning cylinders 17 are connected to the main frame 4 through a connecting plate. The positioning blocks 16 are located at the front end of the positioning cylinders 17, and the air inlets on both sides of the positioning cylinders 17 are connected to the solenoid valves, which are controlled by the control unit.

[0036] The descending mechanism is arranged below the work surface 2, and includes a fixed seat 15, a lifting cylinder 14, a lifting plate 18 and a limiting column 20. Four limiting columns 20 are fixedly installed on the upper surface of the fixed seat 15, and the top of the limiting column 20 is fixed to the bottom surface of the work surface 2. Moreover, the limiting columns 20 are evenly distributed on the four sides of the fixed seat 15, and the inner contour surrounded by the four limiting columns 20 is slightly larger than the outer edge of the lifting plate 18, and also plays a limiting role in preventing the displacement of the bearing inner component 13 when the descending mechanism drives the bearing inner component 13 to descend. The lifting cylinder 14 is also fixedly installed on the upper surface of the fixed seat 15. The lifting cylinder 14 includes a cylinder body, a piston, and a piston rod. The lifting plate 18 is installed on the top of the piston rod; the lifting plate 18 is used to place the bearing inner component 13, and the inner contour of the fitting hole is slightly larger than the outer contour of the lifting plate, and there is a gap of about 2 mm. When the lifting cylinder 14 is pushed out, the upper surface of the lifting plate 18 is flush with the upper surface of the work surface 2 , and when the lifting cylinder 14 is retracted, the upper surface of the lifting plate 18 is lower than the upper surface of the work surface 2 .

[0037] The control unit controls the solenoid valve of the lifting cylinder 11 of the lifting mechanism to control the longitudinal displacement of the lifting mechanism and the tensioning mechanism, controls the solenoid valve of the tensioning cylinder 6 of the tensioning mechanism to control the translation toward / away from the tensioning sleeve body 21 of the tensioning sleeve 5, controls the solenoid valve of the lifting cylinder 14 of the lowering mechanism to control the longitudinal displacement of the lifting plate 18, and controls the solenoid valve of the positioning cylinder 17 of the positioning mechanism to control the translation toward / away from the two positioning blocks 16.

[0038] When the described sleeve-closing device is used, first push the inner bearing component 13 onto the lifting plate 18 of the descending mechanism, then control the lifting mechanism to descend through the control unit, the tensioning sleeve 5 extends into the middle of the inner bearing component 13, then the control unit controls the tensioning cylinder 6 to move, the tensioning sleeve 5 is tightened to both sides, then the control unit controls the lifting mechanism to rise, the tensioning sleeve 5 lifts the upper part of the inner bearing component 13, then the control unit controls the descending mechanism lifting cylinder 14 to retract, the lifting plate 18 together with the lower part of the inner bearing component 13 moves downward, and descends below the work table 2, then the personnel pushes the outer ring 3 of the bearing to the positioning mechanism of the device, then the control unit controls the lifting cylinder 11 to descend and the lifting cylinder 14 to rise, the upper and lower parts of the inner bearing component 13 are respectively placed in the outer ring 3 of the bearing, then the control unit controls the tensioning sleeve 4 to retract, the lifting cylinder 11 rises back to its original position, and the sleeve-closing operation is completed.

[0039] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which belong to the scope of protection of the present invention.

Claims

1. A rail transit bearing assembly device, characterized in that: It comprises a main frame (4), a lifting mechanism, a tensioning mechanism, a lowering mechanism, a positioning mechanism and a control unit; the main frame (4) is mounted on the upper surface of a work surface (2), the lowering mechanism is mounted on the lower surface, and a fitting hole is opened on the work surface at a position corresponding to the lowering mechanism; the main frame is provided with a lifting mechanism, a tensioning mechanism and a positioning mechanism in sequence from top to bottom; The top surface of the main frame (4) is a lifting mechanism mounting plate (12), and a tensioning mechanism connecting plate (7) is horizontally arranged below the lifting mechanism mounting plate (12); The lifting mechanism comprises a lifting cylinder (11), a guide column (10) and a floating joint (8). The guide columns (10) are respectively arranged on both sides of the lifting cylinder (11). The tops of the lifting cylinder (11) and the guide columns (10) are fixedly connected via a guide column connecting plate. The bottom of the lifting cylinder (11) passes through a lifting mechanism mounting plate (12) and is fixedly connected to the top of the floating joint (8). The bottom of the guide column (10) passes through the lifting mechanism mounting plate (12) and is fixedly connected to a tensioning mechanism connecting plate (7). The bottom of the floating joint (8) is connected to the tensioning mechanism connecting plate (7). The tensioning mechanism comprises a tensioning cylinder (6) and a tensioning sleeve (5); the top of the tensioning cylinder (6) is fixedly arranged at the bottom of the tensioning mechanism connecting plate (7), and the bottom of the tensioning cylinder (6) is fixedly connected to the tensioning sleeve (5); the tensioning sleeve (5) is composed of two tensioning sleeve bodies (21) arranged opposite to each other, and the tensioning sleeve bodies (21) are respectively fixedly connected to the finger clamps at the bottom of the tensioning cylinder (6), so that the tensioning sleeve bodies (21) can be driven to move relative / backward under the action of the tensioning cylinder (6); the outer wall of the tensioning sleeve body (21) has a protruding flange for inserting into the gap between the upper inner ring and the middle spacer ring of the bearing inner component (13), so that the upper inner ring of the bearing inner component (13) can be lifted / reset along with the lifting mechanism; The positioning mechanism comprises a positioning cylinder (17) and two positioning blocks (16), wherein the positioning block (16) is located below the tension sleeve (5), and the contour formed by the two positioning blocks (16) is adapted to the outer contour of the bearing outer ring (3); and the positioning blocks (16) are respectively connected to the positioning cylinder (17); The descending mechanism comprises a fixed seat (15), a lifting cylinder (14), a lifting plate (18) and a limiting column (20); the fixed seat (15) is fixed to the bottom surface of the worktable through a plurality of limiting columns (20); the lifting cylinder (14) is fixed to the top surface of the fixed seat (15); a lifting plate (18) is arranged on the top of the lifting cylinder (14); the outer contour and position of the lifting plate are adapted to the inner contour and position of the fitting hole; and a bearing inner component (13) is placed on the lifting plate; The lifting mechanism, lowering mechanism, tensioning mechanism and positioning mechanism are electrically connected to a control unit, and the control unit is used to control the lifting mechanism and the lowering mechanism to rise / fall, control the tensioning mechanism to expand / retract, and control the position adjustment of the positioning mechanism.

2. The rail transit bearing assembly device according to claim 1, characterized in that: The lifting cylinder (11) descends to allow the tension sleeve body (21) of the tensioning mechanism to extend into the bearing inner component (13), and the lifting cylinder (11) lifts to lift the upper part of the bearing inner component (13); The tensioning cylinder (6) can cause the tensioning sleeve body (21) to move relative to or opposite to each other, and the positioning cylinder (17) can cause the outer ring of the bearing to be coaxial with the lifting plate and the inner components of the bearing; the lifting cylinder (14) can be raised or lowered to cause the lifting plate (18) to rise to the level of the work surface or to fall below the work surface.

3. The rail transit bearing assembly device according to claim 1, characterized in that: The guide column (10) is sleeved with a spring and a guide sleeve in sequence from the inside to the outside, so as to facilitate the positioning and support of the lifting mechanism and the tensioning mechanism.

4. The rail transit bearing assembly device according to claim 1, characterized in that: The lifting mechanism further comprises a position sensor (9), which is located on the main frame and is used to detect the position of the lifting mechanism mounting plate so as to monitor the descending position of the lifting mechanism, and the position sensor (9) is electrically connected to the control unit.

5. The rail transit bearing assembly device according to claim 1, characterized in that: The tensioning cylinder (6) is a parallel finger-clamping cylinder, comprising finger-clamping transmission parts arranged in parallel, and the top of each tensioning sleeve body (21) is fixedly connected to the finger-clamping transmission part corresponding to its position.

6. The rail transit bearing assembly device according to claim 1, characterized in that: Air inlets on both sides of the tensioning cylinder (6), the lifting cylinder (11), the jacking cylinder (14) and the positioning cylinder (17) are all provided with electromagnetic valves, and the electromagnetic valves are controlled by a control unit.

7. The rail transit bearing assembly device according to claim 1, characterized in that: The outer side of the tension sleeve body (21) is wrapped with nylon, and a protruding flange is provided at the lower end of the tension sleeve body (21), and its cross section has a tip bevel structure.

8. The rail transit bearing assembly device according to claim 1, characterized in that: A plurality of bases (1) are fixedly connected to the bottom of the work surface; the bases (1) are frames constructed of aluminum profiles.

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