Connecting rod protection device and lower connecting rod of coal hopper car

Abstract

According to the coal hopper car connecting rod protection device and the lower connecting rod, a pipe body is connected to a threaded section of the lower connecting rod in a threaded mode, the two ends of the pipe body are provided with an outer end face and an outer clamping ring respectively, a limiting sleeve comprises two half sleeve bodies, and one end of the limiting sleeve is provided with an inner ring groove matched with the outer clamping ring; the locking mechanism is used for limiting separation of the two half sleeve bodies, the pipe body of the connecting rod protection device of the coal hopper car is in threaded connection with the threaded section of the lower connecting rod, one end of the limiting sleeve is connected with the tank body, and the other end of the limiting sleeve is connected with the lower connecting rod through the limiting groove. And the root of the threaded section is wrapped in the limiting sleeve, so that the axial limiting effect of the limiting sleeve on the lower connecting rod transmission pipe body is achieved, after the root of the threaded section is broken, the threaded section can still be prevented from being separated from the lower connecting rod through the limiting sleeve, the lower connecting rod continues to play a role, and a layer of insurance is provided for the lower connecting rod.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of railway hopper car connecting rod, more particularly, relates to a coal hopper car connecting rod protection device and a lower connecting rod. BACKGROUND

[0002] Most domestic existing coal hopper cars use top lock type bottom door opening and closing mechanism, which adopts two-stage transmission form, and connects the upper transmission device and the lower transmission device by a connecting rod. The connecting rod, as a key accessory of the bottom door opening and closing mechanism of the coal hopper car, may cause the bottom door to open unexpectedly after breaking, so that the goods fall on the track, causing a train accident, and thus the connection reliability thereof determines the operation safety of the vehicle. The mechanism forms a "dead point" lock at the position of the connecting rod, and the eccentricity of the connecting rod passing through the "dead point" is ensured by adjusting the length of the connecting rod. The connecting rod is composed of an upper connecting rod and a lower connecting rod, and the upper and lower connecting rods are connected by a threaded structure due to the need to adjust the length of the connecting rod. During the operation of the vehicle, the connecting rod bears alternating loads, and the threaded root of the lower connecting rod is more prone to fatigue cracks under alternating loads due to slight defects caused by machining, and eventually breaks, affecting use, delaying operation progress, and even causing vehicle failure.

[0003] Since the length of the connecting rod needs to be adjusted, the threaded structure is the preferred connection form, but machining defects are also prone to occur; changing the material of the connecting rod cannot effectively avoid cracks caused by fatigue.

[0004] Therefore, other methods need to be found to solve the problem of "dead point" breakage of the connecting rod. SUMMARY

[0005] The present application aims to solve the problem of the existing lower connecting rod being prone to breakage at the root of the threaded segment due to "dead point", affecting use.

[0006] To achieve the above-mentioned purpose, the present application provides a coal hopper car connecting rod protection device, comprising: a pipe body, which is threadedly connected to the threaded segment of the lower connecting rod, and the two ends of the pipe body are respectively provided with an outer end face and an outer snap ring; a limiting sleeve, which comprises two half sleeve bodies, one end of the limiting sleeve is provided with an inner ring groove matched with the outer snap ring, and the other end of the limiting sleeve is provided with a limiting groove matched with the upper protruding part of the lower connecting rod; a locking mechanism for limiting the separation of the two half sleeve bodies.

[0007] Optionally, the locking mechanism comprises a tapered sleeve, the outer periphery of the limiting sleeve is provided with a tapered surface, the tip of the tapered surface faces the pipe body, and the tapered sleeve cooperates with the tapered surface to make the two half sleeve bodies close to each other.

[0008] Optionally, the limiting sleeve is in the shape of a truncated cone.

[0009] Optionally, the two half sleeve bodies are centrally symmetric along the axis of the limiting sleeve.

[0010] Optionally, the outer end surface is in the shape of a regular hexagon.

[0011] Optionally, when the two half sleeve bodies are attached to each other, the outer clamping ring cannot be detached from the inner ring groove.

[0012] Optionally, when the taper sleeve is located in the middle of the limiting sleeve, the two half sleeve bodies are attached to each other.

[0013] Optionally, a first clamping spring groove is arranged on the outer periphery of the limiting sleeve.

[0014] Optionally, a second clamping spring groove is formed between the end of the limiting sleeve and the outer end surface.

[0015] The application also provides a coal hopper car lower link.

[0016] The application provides a coal hopper car link protection device, which has the following beneficial effects: The pipe body is threadedly connected to the threaded section of the lower link, one end of the limiting sleeve is connected to the tank body, the other end is connected to the lower link through the limiting groove, and the root of the threaded section is wrapped in the limiting sleeve, so that the limiting sleeve can limit the axial position of the pipe body transmitted by the lower link, and even if the root of the threaded section is broken, the threaded section can still be prevented from being separated from the lower link through the limiting sleeve, so that the lower link can continue to function, providing a layer of protection for the lower link, and the lower link can still be used after being broken, avoiding the risk of sudden failure of the vehicle due to the breakage of the lower link, and the protection device can be used in an emergency to continue to function, ensuring the operation of the vehicle to the repair site.

[0017] Other features and advantages of the application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the different views of the drawings and in which:

[0019] Figure 1 A structure diagram of a lower link of a coal hopper car in the prior art is shown.

[0020] Figure 2 A front view of a lower link of a coal hopper car in the prior art is shown.

[0021] Figure 3 A side view of a lower link of a coal hopper car in the prior art is shown.

[0022] Figure 4 A structural schematic view of a coal hopper car link protection device according to an embodiment of the present application is shown.

[0023] Figure 5 A sectional view of a coal hopper car link protection device according to an embodiment of the present application is shown.

[0024] Figure 6 A front view of a coal hopper car link protection device according to an embodiment of the present application is shown.

[0025] Figure 7 A side view of a coal hopper car link protection device according to an embodiment of the present application is shown.

[0026] BRIEF DESCRIPTION OF DRAWINGS 1, tube body; 2, outer end face; 3, outer snap ring; 4, half sleeve body; 5, inner ring groove; 6, taper sleeve. DETAILED DESCRIPTION

[0027] Preferred embodiments of the present application will be described in more detail below. Although the preferred embodiments of the present application are described below, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0028] As shown in Figures 4-7 A coal hopper car link protection device includes: a tube body 1, the tube body 1 is threadedly connected to a threaded section of a lower link, and the tube body 1 is provided with an outer end face 2 and an outer snap ring 3 at both ends thereof; a limiting sleeve, the limiting sleeve includes two half sleeve bodies 4, one end of the limiting sleeve is provided with an inner ring groove 5 matched with the outer snap ring 3, and the other end of the limiting sleeve is provided with a limiting groove matched with a protruding portion on the lower link; a locking mechanism, the locking mechanism is used to limit separation of the two half sleeve bodies 4.

[0029] Specifically, the pipe body 1 is threadedly connected to the threaded section of the lower connecting rod, one end of the limiting sleeve is connected to the tank body, the other end is connected to the lower connecting rod through the limiting groove, and the root of the threaded section is wrapped in the limiting sleeve, realizing the axial limiting effect of the lower connecting rod through the limiting sleeve, so that after the root of the threaded section breaks, the threaded section and the lower connecting rod can still be prevented from separating through the limiting sleeve, allowing the lower connecting rod to continue to function, providing a layer of protection for the lower connecting rod, and allowing the vehicle to continue to operate after the lower connecting rod breaks, avoiding the risk of sudden failure of the vehicle due to the breakage of the lower connecting rod, and allowing the vehicle to continue to operate in an emergency to ensure that the vehicle runs to the repair site.

[0030] In the embodiment, the locking mechanism includes a taper sleeve 6, and the outer periphery of the limiting sleeve is provided with a taper surface, the tip of the taper surface faces the pipe body 1, and the taper sleeve 6 cooperates with the taper surface to make the two half sleeve bodies 4 close to each other.

[0031] Specifically, the taper sleeve 6 cooperates with the inclined surface to make the two half sleeve bodies 4 close to each other.

[0032] Further, the lower connecting rod is generally vertically arranged, and the taper sleeve 6 can drive the two half sleeve bodies 4 to close to each other by gravity.

[0033] In the embodiment, the limiting sleeve is in the shape of a circular truncated cone.

[0034] In the embodiment, the two half sleeve bodies 4 are centrally symmetrical along the axis of the limiting sleeve.

[0035] Specifically, the limiting groove is arranged according to the shape of the reinforced connection between the threaded section and the main body of the connecting rod.

[0036] In the embodiment, the cross section of the outer end surface 2 is in the shape of a regular hexagon.

[0037] Specifically, the outer end surface 2 is arranged in the shape of a hexagonal nut, which is convenient for a wrench to rotate and drive.

[0038] In the embodiment, when the two half sleeve bodies 4 close to each other, the outer clamping ring 3 cannot come out of the inner ring groove 5.

[0039] In the embodiment, when the taper sleeve 6 is located in the middle of the limiting sleeve, the two half sleeve bodies 4 close to each other.

[0040] In the embodiment, the outer periphery of the limiting sleeve is provided with a first clamping spring groove.

[0041] Specifically, a clamping spring is installed through the first clamping spring groove to limit the axial movement of the taper sleeve 6, avoiding the separation of the two half sleeve bodies 4 due to the disengagement of the taper sleeve 6 from the limiting sleeve.

[0042] In the embodiment, a second clamping spring groove is formed between the end of the limiting sleeve and the outer end surface 2.

[0043] Specifically, the clamp spring is installed through the second clamp spring slot to limit the axial movement of the taper sleeve 6, so as to avoid the separation of the two half sleeve bodies 4 caused by the taper sleeve 6 being separated from the limiting sleeve.

[0044] The application also provides a coal hopper car lower link.

[0045] The coal hopper car link protection device in the embodiment is used as an example of a railway freight car lower link: The protection device is first installed on the lower link of the vehicle, then the pipe body 1 is installed on the threaded section of the lower link, and then the two half sleeve bodies 4 are installed to combine the two half sleeve bodies 4 into a limiting sleeve, and the two ends of the limiting sleeve are connected with the outer clasp 3 and the protruding part, respectively. The taper sleeve 6 is installed to make the two half sleeve bodies 4 adhere to each other, and then the lower link is continuously installed.

[0046] When the lower link is broken, the pipe body 1 is connected with the broken threaded section, and the limiting sleeve is connected with the broken lower link body, so that the threaded section and the lower link body still remain connected through the protection device, so that the vehicle can continue to run, and the vehicle operation is ensured to be completed or moved to a repair site.

[0047] The above has described the embodiments of the application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A linkage protection device for a coal hopper car, characterized in that, include: The tube body is threadedly connected to the threaded section of the lower connecting rod, and both ends of the tube body are respectively provided with an outer end face and an outer retaining ring; The limiting sleeve includes two half-sleeves. One end of the limiting sleeve is provided with an inner ring groove that mates with the outer retaining ring, and the other end of the limiting sleeve is provided with a limiting groove that mates with the protrusion on the lower connecting rod. A locking mechanism for preventing the separation of the two halves.

2. The coal hopper car linkage protection device according to claim 1, characterized in that, The locking mechanism includes a conical sleeve, and the outer periphery of the limiting sleeve is provided with a conical surface. The tip of the conical surface faces the tube body, and the conical sleeve cooperates with the conical surface to bring the two half-sleeves closer to each other.

3. The coal hopper car linkage protection device according to claim 2, characterized in that, The limiting sleeve is shaped like a frustum.

4. The coal hopper car linkage protection device according to claim 2, characterized in that, The two half-body parts are symmetrical about the axis of the limiting sleeve.

5. The coal hopper car linkage protection device according to claim 1, characterized in that, The cross-section of the outer end face has a regular hexagonal structure.

6. The coal hopper car linkage protection device according to claim 1, characterized in that, When the two halves are fitted together, the outer retaining ring cannot come out of the inner ring groove.

7. The coal hopper car linkage protection device according to claim 2, characterized in that, When the conical sleeve is located in the middle of the limiting sleeve, the two half-sleeves fit together.

8. The coal hopper car linkage protection device according to claim 2, characterized in that, The outer periphery of the limiting sleeve is provided with a first retaining spring groove.

9. The coal hopper car linkage protection device according to claim 2, characterized in that, A second snap ring groove is formed between the end of the limiting sleeve and the outer end face.

10. A lower connecting rod for a coal hopper car, characterized in that, Includes the coal hopper car linkage protection device as described in any one of claims 1-8.

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