Special lifting appliance for axle box spring of diesel locomotive

Abstract

The utility model provides a special lifting appliance for an axle box spring of an internal combustion locomotive, which relates to the field of maintenance equipment for parts of the internal combustion locomotive and can limit the front side and the rear side of a lug on an upper end cover of the axle box spring in the process of lifting the axle box spring, so that the limiting effect is improved. The probability that the axle box spring shakes in the follow-up transferring process is greatly reduced, then safety in the lifting transferring process is improved, meanwhile, when the L-shaped clamping plates are not pressed, the clamping plates are in an open state and make contact with the limiting pin shafts, and the size between the limiting plates and the upper ends of the clamping plates is larger than the width of the protruding blocks at the moment; therefore, the bump can be conveniently placed in the gap between the limiting plate and the clamping plate, the degree of collision and friction between the bump and the limiting plate as well as between the bump and the clamping plate is greatly reduced, the probability that the axle box spring is damaged is greatly reduced, and the service life of the lifting appliance and the service life of the axle box spring are effectively prolonged; and meanwhile, the axle box spring is convenient to unload after the hanger is transferred, and the dismounting efficiency is good.

Description

Technical Field

[0001] This utility model relates to the field of equipment for repairing parts of internal combustion locomotives, and more specifically, to a special lifting tool for axle box springs of internal combustion locomotives. Background Technology

[0002] The spring system in diesel locomotives is a crucial component, primarily functioning to mitigate the impact between the wheel and rail caused by uneven track surfaces or out-of-round wheels during operation. This system typically comprises springs and shock absorbers, playing a vital role in ensuring smooth operation and extending the service life of the locomotive.

[0003] During locomotive maintenance, to ensure the locomotive's safety and performance, the axle boxes and bogies must be disassembled and inspected. This process requires removing the axle box springs. However, because a single axle box spring weighs 120 catties, this work is both time-consuming and labor-intensive, and also poses certain safety hazards. Currently, although some auxiliary tools, such as lifting devices, are available to assist in the removal and installation of axle box springs, some problems still exist.

[0004] Announcement No. CN217838025U discloses a lifting device for axle box springs, designed to address issues during axle box spring assembly and disassembly, thereby reducing labor intensity for workers. However, in practical applications, this lifting device design still has some shortcomings. Specifically, the lifting device uses a support plate placed at the bottom of the upper end cap protrusion of the axle box spring, with a slot on the support plate engaging with the protrusion. While this design can secure the axle box spring to a certain extent, since only the end limiting plate limits the upper end cap protrusion (i.e., limiting at the front end), if the slot is too large, the protrusion can easily move within the slot during lifting, causing the axle box spring to wobble, thus posing a significant safety hazard.

[0005] Furthermore, when the size difference between the slot and the protrusion is not significant, they are prone to collision and friction during the engagement process. This not only affects the efficiency of disassembly and assembly but also causes wear and shortens the service life of the lifting device and the axle box spring. In summary, the above problems urgently need to be solved. Utility Model Content

[0006] The purpose of this utility model is to solve the problems mentioned in the background art, and then to propose a special lifting tool for axle box springs of internal combustion engine vehicles.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A special lifting tool for axle box springs of internal combustion locomotives includes a bracket with a U-shaped main body, a support component and symmetrically distributed limiting plates on the bracket, and symmetrically arranged limiting parts and clamping parts on the bracket. The clamping parts and limiting parts cooperate to limit the rear of the protrusion on the upper end cover of the axle box spring.

[0009] Furthermore, the limiting component is a limiting pin and the clamping component is an L-shaped clamping plate. The bracket is symmetrically provided with limiting pins and L-shaped clamping plates distributed front and back with the limiting plates. The L-shaped clamping plate includes a clamping plate and an actuating plate arranged perpendicular to the clamping plate. The bottom middle part of the L-shaped clamping plate is hinged to the bracket. The weight of the clamping plate is greater than the weight of the actuating plate and the clamping plate is in contact with the limiting pin.

[0010] This lifting tool can limit the movement of the protrusion on the upper end cover of the axle box spring by both sides during the lifting process, thereby improving the limiting effect. This significantly reduces the probability of the axle box spring swaying during subsequent transportation, thus improving the safety of the lifting and transportation process. At the same time, when the L-shaped clamping plate is not under pressure, its clamping plate is in an open state and in contact with the limiting pin. At this time, the dimension between the upper end of the limiting plate and the clamping plate is larger than the width of the protrusion, which makes it easier to place the protrusion into the gap between the limiting plate and the clamping plate. The degree of collision and friction between the protrusion and the limiting plate and the clamping plate is greatly reduced, thus significantly reducing the probability of damage to the axle box spring. The service life of both the lifting tool and the axle box spring is effectively extended. In addition, the axle box spring is easy to unload after the lifting tool is used for transportation, resulting in excellent disassembly efficiency.

[0011] Furthermore, the support assembly is fitted with a sleeve that slides with it and has two fastening nuts threadedly connected to both sides of the sleeve, and a lifting ring is fixed on the sleeve.

[0012] Furthermore, the support assembly includes a connecting rod, a support rod, and a screw. The bracket is provided with horizontally distributed connecting rods, which are connected to the support rods. The support rods are connected to the screws, and the screws and connecting rods are located on the same side of the support rods and are arranged in parallel. The screws are slidably fitted with a sleeve and threadedly connected with a fastening nut.

[0013] The above solution, through the support components and sleeve, facilitates the hoisting of this device by the overhead crane, and the fastening nut can limit the position of the sleeve on the screw.

[0014] Furthermore, the L-shaped clamping plate is provided with a placement groove that is compatible with the bracket side support rod.

[0015] The above solution involves creating a placement slot in the L-shaped clamping plate, thus not affecting the contact between the protrusion and the inner side of the limiting plate and the surface of the bracket.

[0016] Furthermore, a limit ring is movably mounted at the end of the screw.

[0017] Furthermore, the outer wall of the screw is provided with a plurality of guide grooves distributed along its axis, and the inner wall of the sleeve is provided with guide sliders that correspond one-to-one with and cooperate with the guide grooves.

[0018] Furthermore, a first reinforcing plate is provided at the connection between the connecting rod and the support rod, and a second reinforcing plate is provided at the connection between the support rod and the screw.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The bracket of this utility model is equipped with a limiting plate and an L-shaped clamping plate. The limiting plate and the L-shaped clamping plate can clamp the protrusion to prevent it from moving on the bracket, thereby preventing the axle box spring from shaking during the lifting process.

[0021] 2. When the L-shaped clamping plate of this utility model is not under pressure, its clamping plate is in an open state and in contact with the limiting pin, so that the dimension between the upper part of the limiting plate and the clamping plate is greater than the width of the protrusion. This makes it easy to place the protrusion into the gap between the limiting plate and the clamping plate without causing the protrusion to collide and rub violently with the limiting plate and the clamping plate. When the protrusion presses against the actuating plate, the L-shaped clamping plate rotates and the clamping plate can then rest against the other side of the protrusion, thereby clamping the protrusion between the limiting plate and the clamping plate.

[0022] Compared with existing technologies, this lifting tool can limit the front and rear sides of the protrusion on the upper end cover of the axle box spring during the lifting process, thereby improving the limiting effect. The probability of the axle box spring shaking during subsequent transportation is greatly reduced, thus improving the safety of the lifting and transportation process. At the same time, when the L-shaped clamping plate is not under pressure, its clamping plate is in an open state and in contact with the limiting pin. At this time, the dimension between the upper end of the limiting plate and the clamping plate is larger than the width of the protrusion, which makes it easier to place the protrusion into the gap between the limiting plate and the clamping plate. The degree of collision and friction between the protrusion and the limiting plate and the clamping plate is greatly reduced, thus greatly reducing the probability of damage to the axle box spring. The service life of both the lifting tool and the axle box spring is effectively extended. In addition, the axle box spring is easy to unload after the lifting tool is used for transportation, and the disassembly efficiency is good. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a perspective view of the present invention in use.

[0025] Figure label:

[0026] 1. Bracket; 12. Limiting pin; 13. L-shaped clamping plate; 131. Clamping plate; 132. Touch plate; 14. Limiting plate; 2. Support assembly; 21. Connecting rod; 22. Support rod; 23. Screw; 24. Fastening nut; 25. Sleeve; 26. Lifting ring; 27. Limiting ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0028] like Figure 1 and Figure 2 As shown, a special lifting tool for axle box springs of internal combustion locomotives includes a bracket 1 with a U-shaped main body. A limiting plate 14 with a triangular main body is symmetrically arranged on the bracket 1. A limiting pin 12 and an L-shaped clamping plate 13 distributed front-to-back with the limiting plate 14 are also symmetrically arranged on the bracket 1. The L-shaped clamping plate 13 includes a clamping plate 131 and an actuating plate 132 perpendicular to the clamping plate 131. The bottom middle part of the L-shaped clamping plate 13 is hinged to the bracket 1. (Specifically, the L-shaped clamping plate 13...) The clamping plate 13 has a placement groove that matches the side support rod of the bracket 1, and the L-shaped clamping plate 13 is hinged to the side support rod of the bracket 1 via a rotating shaft. The weight of the clamping plate 131 is greater than the weight of the touch plate 132, and the clamping plate 131 is in contact with the limiting pin 12. The bracket 1 is provided with a support assembly 2, and the support assembly 2 is fitted with a sleeve 25 that slides with it, and two fastening nuts 24 that are threadedly connected to the sleeve 25 on both sides of the sleeve 25. A lifting ring 26 is fixed on the sleeve 25.

[0029] Further refinements of the embodiments of this utility model, such as... Figure 1 As shown, the support assembly 2 includes a connecting rod 21, a support rod 22, and a screw 23. The bracket 1 is provided with horizontally distributed connecting rods 21, which are connected to the support rod 22. The support rod 22 is connected to the screw 23, and the screw 23 and the connecting rod 21 are located on the same side of the support rod 22 and are arranged in parallel. The screw 23 is slidably fitted with a sleeve 25 and threadedly connected with a fastening nut 24. In a further optimization of the design, the outer wall of the screw 23 is provided with several guide grooves distributed along its axis, and the inner wall of the sleeve 25 is provided with guide sliders that correspond one-to-one with the guide grooves and are fitted. The guide grooves and guide sliders are not shown in the figure.

[0030] Further refinements of the embodiments of this utility model, such as... Figure 1As shown, a limiting ring 27 is movably installed at the end of the screw 23 to prevent the fastening nut 24 and sleeve 25 from falling off, and the limiting ring 27 and the screw 23 can be connected by snap-fit ​​or thread.

[0031] The working process of this utility model is as follows:

[0032] When using this lifting tool, first place the two side support rods of bracket 1 under the protrusions on both sides of the upper end cover of the axle box spring, ensuring that their alignment with the axle box spring is not misaligned after placement. Then, place the protrusions on both sides of the upper end cover of the axle box spring against the two limiting plates 14 respectively. Then, use a nylon rope to pass through the lifting ring 26 and connect it to the overhead crane. When the overhead crane lifts the axle box spring, the protrusions on both sides of the upper end cover of the axle box spring will press against the touch plate 132, and the touch plate 132 will rotate. At the same time, it will drive the clamping plate 131 to rotate. After the clamping plate 131 rotates, it will rest against the other side of the upper end cover protrusion, thereby making the protrusion stably clamped between the limiting plate 14 and the clamping plate 131.

[0033] Compared to existing technologies, this lifting tool can limit the front and rear sides of the protrusion on the upper end cover of the axle box spring during the lifting process, thereby improving the limiting effect. The probability of the axle box spring swaying during subsequent transportation is greatly reduced, thus improving the safety of the lifting and transportation process. At the same time, when the L-shaped clamping plate 13 is not under pressure, its clamping plate 131 is in an open state and in contact with the limiting pin 12. At this time, the dimension between the upper end of the limiting plate 14 and the clamping plate 131 is larger than the width of the protrusion, which makes it easier to place the protrusion into the gap between the limiting plate 14 and the clamping plate 131. The degree of collision and friction between the protrusion and the limiting plate 14 and the clamping plate 131 is greatly reduced, thus greatly reducing the probability of damage to the axle box spring. The service life of both the lifting tool and the axle box spring is effectively extended. In addition, the axle box spring is easy to unload after the lifting tool is used for transportation, and the disassembly efficiency is good.

[0034] In some embodiments, a first reinforcing plate is provided at the connection between the connecting rod 21 and the support rod 22, and a second reinforcing plate is provided at the connection between the support rod 22 and the screw 23; the first reinforcing plate and the second reinforcing plate are not shown in the figure.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A special lifting appliance for the axle box spring of an internal combustion locomotive, comprising a bracket (1) in the shape of a U, provided with a support assembly (2) and limit plates (14) distributed symmetrically, characterised in that, The bracket (1) is also symmetrically provided with limiting parts and clamping parts. The clamping parts and limiting parts cooperate to limit the rear of the upper end cover protrusion of the axle box spring.

2. A lifting device for a spring of a locomotive axle box according to claim 1, characterized in that, The limiting component is a limiting pin (12) and the clamping component is an L-shaped clamping plate (13). The bracket (1) is symmetrically provided with the limiting pin (12) and the L-shaped clamping plate (13) distributed in front and behind the limiting plate (14). The L-shaped clamping plate (13) includes a clamping plate (131) and a touch plate (132) arranged perpendicular to the clamping plate (131). The bottom middle part of the L-shaped clamping plate (13) is hinged to the bracket (1). The weight of the clamping plate (131) is greater than the weight of the touch plate (132) and the clamping plate (131) is in contact with the limiting pin (12).

3. A lifting device for a spring of a locomotive axle box, according to claim 1, characterized in that, The support assembly (2) is fitted with a sleeve (25) that slides with it and is threaded with two fastening nuts (24) located on both sides of the sleeve (25). A lifting ring (26) is fixed on the sleeve (25).

4. A lifting device for a spring of a locomotive axle box according to claim 3, characterized in that, The support assembly (2) includes a connecting rod (21), a support rod (22), and a screw (23). The bracket (1) is provided with horizontally distributed connecting rods (21), which are connected to the support rod (22). The support rod (22) is connected to the screw (23), and the screw (23) and the connecting rod (21) are located on the same side of the support rod (22) and are arranged in parallel. The screw (23) is slidably fitted with a sleeve (25) and threadedly connected with a fastening nut (24).

5. A lifting device for a spring of a locomotive axle box as claimed in claim 2, wherein, The L-shaped clamping plate (13) has a placement groove that matches the side support rod of the bracket (1).

6. A lifting device for a spring of a locomotive axle box according to claim 4, characterized in that, A limit ring (27) is movably mounted at the end of the screw (23).

7. A lifting device for a spring of a locomotive axle box as claimed in claim 4, wherein The outer wall of the screw (23) is provided with several guide grooves distributed along its axis, and the inner wall of the sleeve (25) is provided with guide sliders that correspond to and cooperate with the guide grooves.

8. A lifting device for a spring of a locomotive axle box according to claim 4, characterized in that, A first reinforcing plate is provided at the connection between the connecting rod (21) and the support rod (22), and a second reinforcing plate is provided at the connection between the support rod (22) and the screw (23).

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