Axle box end cover pulling-out device

Abstract

The utility model relates to the technical field of disassembly and maintenance of motor train unit wheel set axle boxes, in particular to an axle box end cover pulling-out device. The axle box end cover pulling-out device comprises a wheel set axle box, a counter-force-resistant supporting mechanism and an end cover pulling-out mechanism. The counter-force-resistant supporting mechanism and the end cover pulling-out mechanism are connected through an annular plate in the middle and a connecting shaft. The end cover pulling-out mechanism comprises a clamping assembly and an air cylinder assembly, the clamping assembly is used for clamping an end cover of the wheel set axle box, and the air cylinder assembly is used for driving the clamping assembly to move. The counter-force-resistant supporting mechanism and the end cover pulling-out mechanism are connected together, and damage to a workpiece in the disassembling process is avoided through the flexible design and an air cylinder driving mode; and through a clamping assembly and an air cylinder assembly of the end cover pulling-out mechanism, the three operation steps of counter-force resistance, workpiece clamping and workpiece pulling-out can be combined together, so that field operation is more convenient and faster, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly and maintenance of axle boxes of wheelsets of motor vehicles, in particular to an axle box end cover extraction device. Background Art

[0002] As EMUs are fast and run smoothly, more and more people choose to take EMUs when traveling. As the running part of EMUs, the importance of bogies is self-evident. The wheelset axle box is an important part of the bogie, which contacts the track to carry the vehicle load and transfer the track.

[0003] At present, in all EMU depot wheel set axle box disassembly operations, for split axle boxes, the axle box end covers are mostly manually knocked and struck with hammers to make the end covers fall off. This operation method is labor-intensive, causes damage to the workpiece and has low operation efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide an axle box end cover extraction device, which combines the three operating steps of resisting reaction force, clamping the workpiece end cover and extracting the end cover into one, has high operating efficiency, and adopts a flexible design to ensure that the workpiece is protected from being damaged during the operation.

[0005] The utility model provides an axle box end cover extraction device, comprising: a wheelset axle box, an anti-reaction force support mechanism and an end cover extraction mechanism;

[0006] The anti-reaction force support mechanism and the end cover extraction mechanism are connected via a ring plate and a connecting shaft in the middle portion;

[0007] The end cover extraction mechanism comprises a clamping assembly and a cylinder assembly, wherein the clamping assembly is used to clamp the end cover of the wheelset axle box, and the cylinder assembly is used to drive the clamping assembly to move.

[0008] Preferably, the anti-reaction force support mechanism includes an armrest, a ring plate, an anti-reaction force support member and a support base plate;

[0009] The handrail is welded from an aluminum alloy round tube, and the ring plate is mounted on the lower end of the handrail by fastening screws;

[0010] The middle part of the ring plate is a circular ring, and guide rails are welded at both ends of the circular ring along a certain diameter, and the circular ring is used to install the connecting shaft;

[0011] The upper part of the anti-reaction force support is a rectangular frame, the middle part is a metal round tube, and the lower part is a polyurethane frustum cup ring, and the rectangular frame is plugged into the guide rail of the ring plate;

[0012] The supporting base plate is a U-shaped structure, and the supporting base plate is connected to the ring plate by fastening screws.

[0013] Preferably, the clamping assembly comprises a rack guide rod, a reversing gear and a gear clamp;

[0014] The rack guide rod is installed below the cylinder assembly;

[0015] The reversing gear is installed on both sides of the rack guide rod, and is used for transition and reversing with the gear clamp when the rack guide rod slides up and down.

[0016] Further preferably, a polyurethane rubber plate is installed at the end of the gear clamping claw.

[0017] Preferably, the cylinder assembly comprises a cylinder and a cylinder mounting seat;

[0018] The cylinder is installed above the cylinder mounting seat, and the clamping assembly is installed below the cylinder mounting seat.

[0019] Further preferably, the end cover extraction mechanism further includes a gear fixing beam;

[0020] The gear fixing beam is fixedly connected to the clamping assembly via a pin shaft.

[0021] Further preferably, the end cover extraction mechanism further includes a transition beam;

[0022] The transition beam is connected and fixed to the gear fixing beam through a mounting hole.

[0023] Further preferably, the connecting shaft is fixedly connected to the gear fixing beam by means of a fastening screw and an anti-loosening washer.

[0024] Preferably, an end surface of the connecting shaft is provided with an axial hole, and the axial hole is fixedly connected to the ring plate.

[0025] Further preferably, a guide groove is provided on the inner side of the gear fixing beam, and the guide groove cooperates with the rack on the rack guide rod.

[0026] Beneficial effects:

[0027] The technical solution of the utility model connects the anti-reaction force support mechanism and the end cover pulling-out mechanism together, drives the clamping assembly to move through the cylinder assembly, realizes the clamping and loosening of the end cover to avoid damage to the workpiece, and then connects the anti-reaction force support mechanism and the end cover pulling-out mechanism through the ring plate and the connecting shaft in the middle part, which can combine the three operation steps of anti-reaction force, workpiece clamping and workpiece pulling out, making on-site operation more convenient and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of the anti-reaction force support mechanism in the utility model;

[0031] Figure 3 It is a structural schematic diagram of the end cover extraction mechanism of the utility model;

[0032] Figure 4 It is a cross-sectional view of the end cover extraction mechanism of the utility model.

[0033] Description of reference numerals:

[0034] 1: Wheel set axle box;

[0035] 2: anti-reaction force support mechanism; 201: handrail; 202: ring plate; 203: anti-reaction force support member; 204: support bottom plate;

[0036] 3: end cover extraction mechanism; 301: cylinder; 302: cylinder mounting seat; 303: gear fixing beam; 304: connecting shaft; 305: transition beam; 306: reversing gear; 307: rack guide rod; 308: gear clamp. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] like Figures 1 to 4 As shown, the utility model provides an axle box end cover extraction device, which includes a wheelset axle box 1, an anti-reaction force support mechanism 2 and an end cover extraction mechanism 3. The anti-reaction force support mechanism 2 and the end cover extraction mechanism 3 are connected through a ring plate 202 and a connecting shaft 304 in the middle part. The end cover extraction mechanism 3 includes a clamping assembly and a cylinder assembly, the clamping assembly is used to clamp the end cover of the wheelset axle box 1, and the cylinder assembly is used to drive the clamping assembly to move.

[0041] The technical solution of the utility model connects the anti-reaction force support mechanism 2 and the end cover pulling-out mechanism 3 together, drives the clamping assembly to move through the cylinder assembly, realizes the clamping and loosening of the end cover to avoid damage to the workpiece, and then connects the anti-reaction force support mechanism 2 and the end cover pulling-out mechanism 3 through the ring plate 202 and the connecting shaft 304 in the middle part, which can combine the three operation steps of anti-reaction force, workpiece clamping and workpiece pulling out, making on-site operation more convenient and improving work efficiency.

[0042] The anti-reaction force support mechanism 2 includes an armrest 201 , a ring plate 202 , an anti-reaction force support member 203 and a support base plate 204 .

[0043] The handrail 201 is welded from aluminum alloy round tubes and connected to the ring plate 202 at the lower end by fastening screws. The ring part of the handrail 201 can be equipped with a button control box through a clamp to control the movement of the mechanism.

[0044] There is a metal ring in the middle of the ring plate 202, and guide rails are welded at both ends of the ring plate 202. The inside of the ring is used to install the connecting shaft 304 of the end cover extraction mechanism 3, and the guide rails at both ends are used to install the support legs of the anti-reaction support member 203. The support legs are fixed by top screws, and the position of the support legs on the guide rails can be adjusted after loosening.

[0045] The upper part of the anti-reaction support 203 is a rectangular frame, which can be plugged into the guide rail of the ring plate 202. The middle part is a metal round tube, and the end of the lowermost round tube is a polyurethane frustum cup ring, which can ensure that the workpiece is not damaged when in contact with the workpiece.

[0046] The supporting base plate 204 is a U-shaped structure as a whole, and is processed by CNC, with connecting holes designed at both ends. When the connecting shaft 304 of the ring plate 202 and the end cover extraction mechanism 3 are installed, it is connected to the side holes of the ring plate 202 by fastening screws and anti-loosening washers.

[0047] The clamping assembly includes a rack guide rod 307, a reversing gear 306 and a gear clamp 308. The rack guide rod 307 is installed below the cylinder assembly, and the reversing gear 306 is installed on both sides of the rack guide rod 307 for transition reversal with the gear clamp 308 when the rack guide rod 307 slides up and down.

[0048] Specifically, in this embodiment, the reversing gear 306 is a spur gear with a module of 3 and a total of 24 teeth, which is connected to the gear fixing beam 303 through a pin shaft and is used for transition reversal with the gear clamp 308 when the rack guide rod 307 slides up and down.

[0049] The rack guide rod 307 is made of CNC, with a circular guide rod at the top and a hole at the end for connecting with the cylinder rod 301 of the cylinder 301. In the middle are two rows of racks with a module of 3 and a symmetrical arrangement. A guide groove is provided on the inner side of the gear fixing beam 303, which cooperates with the rack on the rack guide rod 307 and is used for guiding the rack when it moves up and down.

[0050] The gear clamp 308 is made of CNC, with a sector gear at one end, a pin hole in the middle, and a tapered end. A polyurethane rubber plate is installed on the side of the end of the gear clamp 308 that contacts the workpiece to ensure flexible contact with the workpiece without damaging the workpiece. The polyurethane rubber plate is designed to conform to the part of the workpiece that is in contact. Driven by the reversing gear 306, the gear clamp 308 can achieve clamping and axial telescopic movement.

[0051] The cylinder assembly includes a cylinder 301 and a cylinder mounting seat 302 . The cylinder 301 is mounted above the cylinder mounting seat 302 , and the clamping assembly is mounted below the cylinder mounting seat 302 .

[0052] Specifically, in this embodiment, the cylinder 301 is ultra-thin in design, compact in size, light in weight, and meets the clamping torque requirements. The cylinder mounting seat 302 meets the parameter size design of the cylinder 301, and is made of steel as a whole. The cylinder 301 is installed on the top of the cylinder mounting seat 302, and the transition beam 305 is installed on the bottom.

[0053] The end cover extraction mechanism 3 also includes a gear fixing beam 303, which is connected to the clamping assembly through a pin. Specifically, in this embodiment, the gear fixing beam 303 is made of hard aluminum alloy CNC processing as a whole, and each set of mechanisms has two pieces, which are fixed to the reversing gear 306 and the gear clamp 308 through a pin, and together form a clamping and extraction mechanism.

[0054] The end cover extraction mechanism also includes a transition beam 305, which is connected to the gear fixing beam 303 through a mounting hole. Specifically, in this embodiment, the transition beam 305 is a rectangular shape with a hollow middle, which is processed by welding four steel plates. The two side steel plates are designed with mounting holes for connecting with the gear fixing beam 303. The top plate is designed with guide holes and mounting holes for installing the cylinder 301 and guiding the cylinder rod.

[0055] The connecting shaft 304 is fixedly connected to the gear fixing beam 303 by means of a fastening screw and a locking washer. The end face of the connecting shaft 304 is provided with an axial hole, which is connected to the ring plate 202. Specifically, in this embodiment, the cross section of the connecting shaft 304 is in the shape of a circular ring, and the top of the connecting shaft 304 is fixed to the gear fixing beam 303 by means of a fastening screw, and a locking washer is sleeved on the fastening screw. A boss is provided on the outside of the connecting shaft 304. When the shaft box end cover extraction device is used, the main body of the connecting shaft 304 is sleeved in the ring plate 202, and the boss on the outside of the connecting shaft 304 contacts the bottom of the ring plate 202.

[0056] Working principle:

[0057] After the workpiece with the wheelset axle box 1 is placed on the workshop rails, the operator pushes over the disassembly mechanism equipped with the axle box end cover extraction device, aligns the anti-reaction force support mechanism 2 with the end face of the axle box, and operates the pneumatic switch button. The cylinder 301 is actuated to drive the rack guide rod 307, the reversing gear 306 and the gear clamp 308 to clamp the axle box end cover and then extract the wheelset axle box 1. The operator places the clamped wheelset axle box 1 on a pallet or conveyor line and proceeds to the next process.

[0058] The axle box end cover extraction device is mainly composed of an anti-reaction force support mechanism 2 and an end cover extraction mechanism 3, and these two mechanisms are connected through a ring plate 202 and a connecting shaft 304 in the middle part. The axle box end cover extraction device is installed under the vertical telescopic column of the workshop truss slide rail by fastening screws and used in conjunction with it.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A device for extracting an axle box end cover, characterized in that: include: Wheel set axle box, anti-reaction force support mechanism and end cover extraction mechanism; The anti-reaction force support mechanism and the end cover extraction mechanism are connected via a ring plate and a connecting shaft in the middle portion; The end cover extraction mechanism comprises a clamping assembly and a cylinder assembly, wherein the clamping assembly is used for clamping the end cover of the wheelset axle box, and the cylinder assembly is used for driving the clamping assembly to move.

2. The axle box end cover extraction device according to claim 1, characterized in that: The anti-reaction force support mechanism includes a handrail, a ring plate, an anti-reaction force support member and a support base plate; The handrail is welded from an aluminum alloy round tube, and the ring plate is mounted on the lower end of the handrail by fastening screws; The middle part of the ring plate is a circular ring, and guide rails are welded at both ends of the circular ring along a certain diameter, and the circular ring is used to install the connecting shaft; The upper part of the anti-reaction force support is a rectangular frame, the middle part is a metal round tube, and the lower part is a polyurethane frustum cup ring, and the rectangular frame is plugged into the guide rail of the ring plate; The supporting base plate is a U-shaped structure, and the supporting base plate is connected to the ring plate by fastening screws.

3. The axle box end cover extraction device according to claim 1, characterized in that: The clamping assembly includes a rack guide rod, a reversing gear and a gear clamp; The rack guide rod is installed below the cylinder assembly; The reversing gear is installed on both sides of the rack guide rod, and is used for transition and reversing with the gear clamp when the rack guide rod slides up and down.

4. The axle box end cover extraction device according to claim 3, characterized in that: A polyurethane rubber plate is installed at the end of the gear clamping claw.

5. The axle box end cover extraction device according to claim 1, characterized in that: The cylinder assembly comprises a cylinder and a cylinder mounting seat; The cylinder is installed above the cylinder mounting seat, and the clamping assembly is installed below the cylinder mounting seat.

6. The axle box end cover extraction device according to claim 3, characterized in that: The end cover extraction mechanism also includes a gear fixing beam; The gear fixing beam is fixedly connected to the clamping assembly via a pin shaft.

7. The axle box end cover extraction device according to claim 6, characterized in that: The end cover extraction mechanism also includes a transition beam; The transition beam is connected and fixed to the gear fixing beam through a mounting hole.

8. The axle box end cover extraction device according to claim 6, characterized in that: The connecting shaft is fixedly connected to the gear fixing beam via a fastening screw and an anti-loosening washer.

9. The axle box end cover extraction device according to claim 1, characterized in that: The end surface of the connecting shaft is provided with an axial hole, and the axial hole is fixedly connected to the ring plate.

10. The axle box end cover extraction device according to claim 6, characterized in that: A guide groove is arranged inside the gear fixing beam, and the guide groove cooperates with the rack on the rack guide rod.

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