Telescopic wrench for auxiliary air cylinder of air spring of passenger train

Abstract

The utility model belongs to the field of passenger train maintenance tools, and provides a telescopic wrench for an auxiliary air cylinder of an air spring of a passenger train, which comprises a wrench body, the wrench body comprises a clamping part, a handle part, a wrench bayonet, a reinforcing edge bulge and a guide pipe, a groove is formed between the reinforcing edge bulge and the clamping part, and a reflector is arranged in the groove. A telescopic handle assembly is arranged on the handle part and comprises a main handle, an inner structure cavity in friction fit with the handle part, the reinforcing edge protrusion and the guide pipe is formed in the main handle, a pair of countersunk holes communicated with the inner structure cavity is formed in the end of the main handle, and countersunk core rods in threaded connection with the countersunk holes are arranged in the countersunk holes. The countersunk head core rod is matched with the guide pipe in a telescopic mode, tail protrusions are arranged on the two sides of the end of the main handle, through holes are formed in the tail protrusions, and a concentric-square-shaped auxiliary rod matched with the tail protrusions in a telescopic mode is arranged on the main handle. The device is reasonable in design, simple in structure, adjustable in moment arm length, high in practicability and suitable for large-scale popularization, and has a reflective design.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of passenger train maintenance tools, especially relates to a railway passenger car air spring auxiliary air cylinder telescopic wrench. BACKGROUND

[0002] Due to the influence of comprehensive factors such as climate conditions, line conditions, air spring system components and air spring quality, air spring may appear air leakage phenomenon. When new air-conditioned passenger cars are put into railway passenger transport, air spring air leakage fault occurs in the running and warehousing maintenance, and in the train preparation operation, it is necessary to confirm that the air cylinder including the main air cylinder, the brake air cylinder, the air spring air cylinder and the auxiliary air cylinder maintains good appearance, the plug door position is correct, and there is no air leakage.

[0003] At present, in the preparation operation of the air spring auxiliary air cylinder, a special wrench is used to adjust the nut structure. The existing auxiliary air cylinder special wrench is a sheet structure, which is larger than the general wrench, and the thickness is relatively thin to adapt to the operation conditions of narrow space. But there are still some problems in actual use, such as the length of the special wrench cannot be adjusted, and in the narrow space operation, it may hit other parts of the locomotive, and hurt the back of the hand and arm of the worker. Moreover, in the operation under the condition of dim light, it is not conducive to check the centering condition of the wrench socket and the nut, and affects the actual progress of the preparation operation. UTILITY MODEL CONTENTS

[0004] In view of the technical problems existing in the above-mentioned air spring auxiliary air cylinder special wrench, the utility model provides a railway passenger car air spring auxiliary air cylinder telescopic wrench which is reasonable in design, simple in structure, adjustable in force arm length, has reflective design and high practicability.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that the utility model provides a railway passenger car air spring auxiliary air cylinder telescopic wrench, which comprises a wrench body, the wrench body comprises a clamping part and a handle part, the clamping part is provided with a wrench socket, the front edge and the back edge of the wrench body are provided with reinforcing edge protrusions, the reinforcing edge protrusions and the clamping part form a groove, and a reflective plate is arranged in the groove, two guide pipes are arranged on the handle part and extend towards the distal end of the handle part, the center of the guide pipe is located on the thickness division plane of the wrench body, a telescopic handle assembly is arranged on the handle part, the telescopic handle assembly comprises a main handle, an inner structure cavity is arranged in the main handle and frictionally connected with the handle part, the reinforcing edge protrusion and the guide pipe, a pair of counterbores are arranged at the end of the main handle and connected with the inner structure cavity, a counterbores core rod is arranged in the counterbores and screwed with the counterbores, the counterbores core rod is telescopically connected with the guide pipe, tail protrusions are arranged on both sides of the end of the main handle, through holes are arranged in the tail protrusions, and a back-shaped auxiliary rod is telescopically connected with the tail protrusions.

[0006] As preferred, the inner structure cavity comprises a plate cavity section matched with the handle, both sides of the plate cavity section are provided with side channel sections matched with the reinforcing edge convex and perpendicular to the plate cavity section, and a cylindrical groove section matched with the guide tube is arranged on the plate cavity section.

[0007] As preferred, the meandering auxiliary rod comprises two side rod sections, a U-shaped arching rod section is arranged at the front end of the side rod section, the arching rod section is used for clamping the end of the main handle, and a tail rod section is arranged at the tail of the side rod section, and the diameter of the tail rod section is larger than that of the side rod section.

[0008] As preferred, the handle is provided with a guide groove at both sides, the side surface of the main handle is provided with a positioning hole corresponding to the guide groove, and a positioning screw in sliding fit with the guide groove is arranged in the positioning hole.

[0009] As preferred, the wrench body is provided with a spline hole at the joint position of the clamping part and the handle, and the spline hole is in close fit with a spline convex arranged at the bottom of the reflective plate.

[0010] Compared with the prior art, the utility model has the advantages and positive effects that:

[0011] 1. The utility model provides a telescopic wrench for railway passenger train air spring auxiliary air cylinder, adopts a reflective plate to improve the reflectivity of the wrench body, is favorable for improving the identification in weak light environment, is favorable for staff to check the centering condition of the wrench socket and the nut to improve operation efficiency, the wrench body adopts a reinforcing edge convex, is favorable for improving the structural strength of the wrench body, and provides a sinking installation condition for the reflective plate, the actual arm length of the wrench can be flexibly adjusted through the pulling telescopic handle assembly and the meandering auxiliary rod, is favorable for reducing the operation difficulty of the tool in limited space, and avoids that the body structure of the staff is bumped on the parts of the locomotive. DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without paying creative labor.

[0013] Fig. 1 The isometric view of the telescopic wrench for railway passenger train air spring auxiliary air cylinder provided for the embodiment;

[0014] Fig. 2The figure is a top view of the telescopic spanner for the air spring auxiliary cylinder of the railway passenger car provided by the embodiment;

[0015] Fig. 3 The figure is a sectional view of the telescopic spanner for the air spring auxiliary cylinder of the railway passenger car provided by the embodiment;

[0016] Fig. 4 The figure is an axonometric view of the spanner body provided by the embodiment;

[0017] Fig. 5 The figure is a distribution diagram of the reflector and the spline protrusion at the bottom thereof provided by the embodiment;

[0018] Fig. 6 The figure is a sectional view of the main handle provided by the embodiment;

[0019] In the above figures, 1, spanner body; 11, clamping part; 12, handle part; 13, spanner clamping opening; 14, reinforcing edge protrusion; 15, guide pipe; 16, guide groove; 17, spline hole; 2, reflector; 21, spline protrusion; 3, telescopic handle assembly; 31, main handle; 32, internal structure cavity; 321, plate cavity section; 322, side channel section; 323, cylindrical groove section; 33, counterbore; 34, counterbore core rod; 35, tail protrusion; 36, meander-shaped auxiliary rod; 361, side rod section; 362, arched rod section; 363, tail rod section; 37, positioning hole. DETAILED DESCRIPTION

[0020] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, the terms "up", "down", "left", "right" appear in the following text only indicate the same direction as the up, down, left and right directions of the drawings themselves, and do not limit the structure.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0022] Embodiments, such as Figs. 1-6As shown, the telescopic wrench for the auxiliary air cylinder of a railway passenger car air spring provided by the present invention comprises a wrench body 1, comprising a clamping portion 11 and a handle 12. The clamping portion 11 is provided with a wrench bayonet 13. The wrench bayonet 13 has four inner edges for clamping the nut of the auxiliary air cylinder. Furthermore, the wrench body 1 provided by the present invention is provided with reinforcing edge protrusions 14 on both the front and back edges. The use of the reinforcing edge protrusions 14 increases the contact area between the wrench bayonet 13 and the nut, despite its limited thickness, directly improves the structural strength of the wrench body 1, and also provides for a sunken installation of a reflector 2. A groove is formed between the reinforcing edge protrusion 14 and the clamping portion 11, and a reflector 2 is disposed in the groove. The use of the reflector 2 enhances the reflectivity of the wrench body 1, improving its visibility in low-light environments and facilitating the operator's ability to check the alignment of the wrench bayonet 13 with the nut, thereby improving work efficiency.

[0023] Furthermore, the utility model is provided with two guide tubes 15 distributed in parallel and extending toward the distal end of the handle 12 on the handle 12, and the tube core of the guide tube 15 is located on the thickness bisecting plane of the wrench body 1, and a telescopic handle assembly 3 is provided on the handle 12, and the telescopic handle assembly 3 includes a main handle 31, and the interior of the main handle 31 is provided with an inner structural cavity 32 that frictionally cooperates with the handle 12, the reinforcing edge protrusion 14 and the guide tube 15, and the end of the main handle 31 is provided with a pair of countersunk holes 33 connected to the inner structural cavity 32, and a countersunk core rod 34 threadedly connected to the countersunk hole 33 is provided, and the countersunk core rod 34 is telescopically cooperated with the guide tube 15, and tail protrusions 35 are provided on both sides of the end of the main handle 31, and the tail protrusion 35 is provided with a through hole, and the main handle 31 is provided with a circular sub-rod 36 that telescopically cooperates with the tail protrusion 35. The diameter of the guide tube 15 is slightly larger than the thickness of the wrench body 1, thereby increasing the inner diameter to meet the corresponding strength of the countersunk core rod 34; the main handle 31 is a direct hand-held structure, which can be held by a person and perform corresponding pulling and torque application operations. Regarding the telescopic handle assembly 3, the telescopic cooperation of the guide tube 15 and the countersunk core rod 34 allows the main handle 31 and the wrench body 1 to form a first telescopic pair, while the telescopic cooperation of the circular sub-rod 36 and the tail protrusion 35 can form a second telescopic pair. This actually forms a three-section telescopic section with a multi-level telescopic adjustment function, thereby flexibly adjusting the actual lever arm length of the wrench, which helps to reduce the difficulty of operating the tool in a limited space and prevent the operator's body structure from colliding with locomotive parts, thereby having good practicality and utilization rate.

[0024] In order to improve the plug-in performance of the main handle 31 and the wrench body 1, the inner structure cavity 32 comprises a plate cavity section 321 matched with the handle part 12, the both sides of the plate cavity section 321 are provided with side channel sections 322 matched with the reinforcing edge convex 14 and perpendicular to the plate cavity section 321, and the plate cavity section 321 is provided with a cylindrical groove section 323 matched with the guide pipe 15. In this way, the inner structure cavity 32 can form a face-to-face plug-in relationship with the corresponding node position of the wrench body 1, has good contact quality, and thus guarantees the plug-in effect of the main handle 31 and the wrench body 1.

[0025] In order to improve the practicability of the back-shaped auxiliary rod 36, the back-shaped auxiliary rod 36 comprises two side rod sections 361, the front end of the side rod section 361 is provided with a U-shaped arching rod section 362, the arching rod section 362 is used for being clamped at the end of the main handle 31, the tail part of the side rod section 361 is provided with a tail rod section 363, and the diameter of the tail rod section 363 is greater than that of the side rod section 361. The side rod section 361 is pulled out of the through hole of the tail convex 35, and a certain length of the force arm adjustment range is provided by the side rod section 361; the arching rod end can slide along the surface of the main handle 31 in the adjustment process of the side rod section 361, provides a supporting reaction force for the entire back-shaped auxiliary rod 36, and facilitates that the torque applied by the human force can be effectively transmitted to the wrench body 1 and the nut after the length of the force arm of the back-shaped auxiliary rod 36 is adjusted; in the case that the length of the force arm of the back-shaped auxiliary rod 36 does not need to be adjusted, the arching rod section 362 can be clamped at the end of the main handle 31, and the tail rod section 363 is used as a limiting structure of the tail end of the back-shaped rod.

[0026] In order to prevent the telescopic handle assembly 3 from being separated from the wrench body 1, the utility model is provided with the guide groove 16 on the both sides of the handle part 12, the side surface of the main handle 31 is provided with the positioning hole corresponding to the guide groove 16, and the positioning screw in the positioning hole is used for being slidably matched with the guide groove 16. In this way, the guide pipe 15 and the countersunk core rod 34 generate telescopic change, the main handle 31 can move along the matching track of the guide groove 16 and the positioning screw, and the telescopic limit of the main handle 31 is limited by the actual length of the guide groove 16, so that the telescopic handle assembly 3 and the wrench body 1 are prevented from being separated.

[0027] In order to improve the plug-in stability of the reflector plate 2 and the wrench body 1, the utility model provides that the wrench body 1 is provided with the spline hole 17 at the joint position of the clamping part 11 and the handle part 12, the spline hole 17 is tightly matched with the spline convex 21 arranged at the bottom of the reflector plate 2, a plurality of contact surfaces in multiple directions are provided through the spline hole 17 and the spline convex 21, the plug-in tightness is good, and the anti-separation effect is good.

[0028] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A telescopic spanner for a railway passenger car air spring auxiliary air cylinder, comprising a spanner body, the spanner body comprising a clamping portion and a handle portion, the clamping portion being provided with a spanner clamping opening, characterized in that, The front edge and the back edge of the wrench body are provided with reinforcing edge protrusions, and the reinforcing edge protrusions and the clamping part form grooves, and the grooves are provided with reflective plates; the handle part is provided with two guide tubes which are distributed side by side and extend towards the distal end of the handle part, and the tube centers of the guide tubes are located on the thickness bisector plane of the wrench body; the handle part is provided with a telescopic handle assembly, and the telescopic handle assembly comprises a main handle, and the inside of the main handle is provided with an inner structure cavity which is in frictional engagement with the handle part, the reinforcing edge protrusions and the guide tubes; the end of the main handle is provided with a pair of counterbores which are in communication with the inner structure cavity, and the counterbores are provided with counterboar pins which are in threaded connection with the counterbores; the counterboar pins are in telescopic engagement with the guide tubes; the end of the main handle is provided with tail protrusions which are provided with through holes; and the main handle is provided with a back-shaped auxiliary rod which is in telescopic engagement with the tail protrusions.

2. The retractable wrench for the air spring auxiliary reservoir of a railway passenger car according to claim 1, characterized in that, The inner structure cavity comprises a plate cavity section which is in engagement with the handle part, and the two sides of the plate cavity section are provided with side channel sections which are in engagement with the reinforcing edge protrusions and are perpendicular to the plate cavity section; and the plate cavity section is provided with a cylindrical groove section which is in engagement with the guide tubes.

3. The retractable wrench for the air spring auxiliary reservoir of a railway passenger car according to claim 2, characterized in that, The back-shaped auxiliary rod comprises two side rod sections, and the front end of each side rod section is provided with a U-shaped arching rod section which is used for clamping the end of the main handle; and the tail of each side rod section is provided with a tail rod section which has a larger diameter than the side rod section.

4. The retractable wrench for railway passenger car air spring auxiliary reservoirs as set forth in claim 3, wherein, The handle part is provided with guide grooves on the two sides thereof, and the side surface of the main handle is provided with positioning holes which are in correspondence with the guide grooves and are used for mounting positioning screws which are in sliding engagement with the guide grooves.

5. The extension wrench for the air spring auxiliary cylinder of a railway passenger car according to any one of claims 1 to 4, characterized in that, The wrench body is provided with a spline hole at the joint position of the clamping part and the handle part, and the spline hole is in close engagement with a spline protrusion which is arranged at the bottom of the reflective plate.

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