阅读说明：本技术 定位装置 (Positioning device ) 是由 王君强 马呈祥 崔启超 于 2021-10-12 设计创作，主要内容包括：本发明提出一种定位装置,其包含支架及活动模板；支架包含沿第一方向延伸的第一部,第一部设置有固定单元；活动模板可沿第二方向滑动地设置于支架,第二方向垂直于第一方向,活动模板具有沿第二方向的第一端及第二端,第一端设置有定位槽及顶尖,定位槽具有预设长度并以其延伸方向贯穿第一端,延伸方向平行于第一方向和第二方向定义的参考平面,并相对第二方向具有预设倾角,顶尖位于定位槽的一端；定位装置通过固定单元将第一部固定于轨道机车车轮的轮辋外侧面,并通过滑动活动模板而使顶尖抵顶于车轮的轮缘,再通过定位槽定位轮缘润滑喷嘴,以使轮缘润滑喷嘴的定位方向保持与轮辋外侧面具有预设倾角,并使其与轮缘根部的目标区域保持预设距离。(The invention provides a positioning device, which comprises a bracket and a movable template; the bracket comprises a first part extending along a first direction, and the first part is provided with a fixing unit; the movable template is arranged on the support in a sliding mode along a second direction, the second direction is perpendicular to the first direction, the movable template is provided with a first end and a second end along the second direction, the first end is provided with a positioning groove and an apex, the positioning groove is provided with a preset length and penetrates through the first end along the extending direction of the positioning groove, the extending direction is parallel to a reference plane defined by the first direction and the second direction and is provided with a preset inclination angle relative to the second direction, and the apex is located at one end of the positioning groove; the positioning device fixes the first part on the outer side surface of a rim of a wheel of the rail locomotive through the fixing unit, enables the tip to abut against a rim of the wheel through the sliding movable template, and positions the rim lubricating nozzle through the positioning groove, so that the positioning direction of the rim lubricating nozzle keeps a preset inclination angle with the outer side surface of the rim, and the positioning direction of the rim lubricating nozzle keeps a preset distance with a target area at the root of the rim.)

1. A positioning device for adjustable positioning of a rim lubrication nozzle of a rail locomotive, the positioning device comprising:

a bracket including a first portion extending in a first direction, the first portion being provided with a fixing unit; and

the movable template is arranged on the bracket in a sliding mode along a second direction, the second direction is perpendicular to the first direction, the movable template is provided with a first end and a second end along the second direction, the first end is provided with a positioning groove and an apex, the positioning groove is provided with a preset length and penetrates through the first end in the extending direction of the positioning groove, the extending direction is parallel to a reference plane defined by the first direction and the second direction and has a preset inclination angle relative to the second direction, and the apex is located at one end of the positioning groove;

the positioning device is configured to fix the first portion on the outer side face of a rim of a railway locomotive wheel through the fixing unit, enable the tip to abut against a rim of the wheel through sliding the movable template, and then position the rim lubrication nozzle through the positioning groove, so that the positioning direction of the rim lubrication nozzle is kept to have a preset inclination angle with the outer side face of the rim, and the rim lubrication nozzle is kept to be away from a target area at the root of the rim by a preset distance.

2. The positioning device as set forth in claim 1, wherein said bracket further includes a second portion extending in said second direction, said movable die plate being disposed at said second portion.

3. The positioning device according to claim 2, wherein the second portion has a third end and a fourth end along the second direction, the third end being connected to the first portion, the fourth end extending along the second direction, the fourth end being provided with a sharp corner towards a side of the first portion; and when the first part is fixed on the outer side surface of the rim, the sharp corner abuts against the tread of the wheel.

4. A positioning device according to claim 3, wherein said sharp angle is at a distance of 70mm from said first portion in said second direction.

5. The positioning device according to claim 2, wherein an avoidance groove is provided at a side of a junction of the first portion and the second portion toward the fourth end.

6. The positioning device as set forth in claim 1, wherein the fixing unit is a switchable magnetic seat configured to be switched between a magnetically on state and a magnetically off state, the switchable magnetic seat having magnetism for magnetically attracting the outer side surface of the rim, thereby realizing the fixing of the first portion.

7. The positioning device of claim 1, wherein:

the positioning device further comprises a guide positioning plate, the guide positioning plate is arranged on one side of the bracket along a third direction and comprises a limiting part and a guiding part, the third direction is perpendicular to the reference plane, the guiding part is arranged on one side of the limiting part, which faces the bracket, and the width of the limiting part along the first direction is larger than that of the guiding part;

the movable template is provided with a guide slot hole which is communicated along the third direction, the guide slot hole extends along the second direction, the width of the guide slot hole is equal to that of the guide part along the first direction, and the length of the guide slot hole along the second direction is greater than that of the guide part;

the movable template is sleeved on the guide part through the guide groove hole.

8. The positioning device of claim 7, wherein:

the guide positioning plate is connected to the bracket through a plurality of fastening bolts, and the fastening bolts are arranged at intervals along the second direction; and/or

The guide positioning plate is provided with an adjusting bolt, the adjusting bolt is positioned on the part, which is not overlapped with the guide part, of the limiting part, and the guide positioning plate is configured to adjustably abut against the movable template through the adjusting bolt.

9. The positioning device according to claim 1, wherein the predetermined inclination angle is 45 ° and the positioning slot has a predetermined length of 28 mm.

10. The positioning device as set forth in claim 1, wherein the second end of the movable platen is provided with a push-pull handle.

Technical Field

The invention relates to the technical field of production and maintenance equipment of rail locomotives, in particular to a positioning device.

Background

With the continuous development of rail transit transportation equipment technology, the quality requirements of users in the railway industry are continuously refined, and the requirements of technical standards are continuously perfected. The main functions of the locomotive wheel rim lubricating system are to reduce the wheel rim abrasion and reduce the wheel rail friction noise. When the locomotive runs in a line section with more small-radius curves and a larger ramp, the wheel rim lubrication can play a good anti-friction effect on the wheel rim and the inner side surface of the steel rail, and reduce the friction noise of the wheel rim against the inner side surface of the steel rail.

The nozzle of the wheel rim lubricating system is arranged on a locomotive bogie frame, in locomotive application, a wheel is turned and repaired due to continuous abrasion of a locomotive wheel tread and the wheel rim or other reasons, the diameter of the wheel is gradually reduced, so that the relative position between the wheel rim lubricating nozzle and the wheel rim can exceed the design and installation size requirement, the lubricant sprayed by the wheel rim lubricating nozzle cannot be sprayed to the specified position of the wheel rim, the effects of reducing abrasion and reducing noise cannot be achieved, even the spraying to the wheel tread influences the normal performance of the adhesion force of a wheel rail, particularly during long and large slope running, the idling and slipping of the locomotive wheel are easily caused to cause slope stop faults, and the correctness of the position of the wheel rim lubricating nozzle is one of important technical standards for ensuring the normal running of the locomotive.

The relative position of the nozzle and the wheel rim needs to be continuously adjusted along with the change of the diameter of the locomotive wheel. The distance between a nozzle of a locomotive wheel rim lubricating system and a wheel rim is 28mm according to the technical standard of the HXD2 locomotive, the nozzle and the surface of the wheel rim form an included angle of 45 degrees, namely the position of the nozzle is a space point (matched with and referring to figure 5), the direct measurement and positioning are difficult, a wheel tread is in a standard profile when the locomotive is newly manufactured, a template with fixed size can be adopted for positioning and mounting, but the height and the thickness of the wheel rim are changed randomly along with the continuous abrasion of the wheel tread and the wheel rim in the application of the locomotive, and the wheel rim cannot be positioned by the fixed template due to the fact that the height and the thickness of the wheel rim are different.

At present, when the locomotive is used for maintenance, the size is estimated by human vision for positioning and adjustment, time and labor are wasted, the deviation of the position of a nozzle is large due to human factors, the condition that the wheel rim lubrication cannot achieve the anti-wear effect is often caused, and the problems of abnormal wear of the wheel rim, tread stripping and out-of-round vibration caused by idle slip and the like are caused, so that unnecessary economic loss is caused. Therefore, the positioning device for adjusting the lubricating nozzle of the wheel rim of the locomotive is innovatively provided in combination with the practical difficulty of locomotive maintenance.

Disclosure of Invention

It is a primary object of the present invention to overcome at least one of the above-mentioned deficiencies of the prior art and to provide a positioning device that allows for precise and convenient adjustment and positioning of a locomotive wheel rim lubrication nozzle.

In order to achieve the purpose, the invention adopts the following technical scheme:

according to one aspect of the present invention, there is provided a positioning device for adjustable positioning of a rim lubrication nozzle of a rail locomotive, the positioning device comprising a bracket and a movable platen; the bracket comprises a first part extending along a first direction, and the first part is provided with a fixing unit; the movable template is arranged on the bracket in a sliding manner along a second direction, the second direction is perpendicular to the first direction, the movable template is provided with a first end and a second end along the second direction, the first end is provided with a positioning groove and an apex, the positioning groove penetrates through the first end along the extending direction of the positioning groove, the extending direction is parallel to a reference plane defined by the first direction and the second direction and has a preset inclination angle relative to the second direction, and the apex is positioned at one end of the positioning groove; the positioning device is configured to fix the first portion on the outer side face of a rim of a railway locomotive wheel through the fixing unit, enable the tip to abut against a rim of the wheel through sliding the movable template, and position the rim lubrication nozzle through the positioning groove, so that the positioning direction of the rim lubrication nozzle is kept to have a preset inclination angle with the outer side face of the rim.

According to one embodiment of the present invention, the holder further includes a second portion extending in the second direction, the movable die plate being disposed at the second portion.

According to one embodiment of the invention, the second portion has a third end and a fourth end along the second direction, the third end being connected to the first portion, the fourth end extending along the second direction, the fourth end being provided with a sharp corner on a side facing the first portion; and when the first part is fixed on the outer side surface of the rim, the sharp corner abuts against the tread of the wheel.

According to one embodiment of the invention, the sharp corner is located at a distance of 65mm to 75mm from the first portion.

According to one embodiment of the present invention, an avoidance groove is formed at a side of a junction of the first portion and the second portion, the side facing the fourth end.

According to one embodiment of the present invention, the fixing unit is a switchable magnetic seat configured to be switched between a magnetic on state and a magnetic off state, and in the magnetic on state, the switchable magnetic seat has magnetism for magnetically attracting the outer side surface of the rim, so as to fix the first portion.

According to one embodiment of the present invention, wherein: the positioning device further comprises a guide positioning plate, the guide positioning plate is arranged on one side of the bracket along a third direction and comprises a limiting part and a guiding part, the third direction is perpendicular to the reference plane, the guiding part is arranged on one side of the limiting part, which faces the bracket, and the width of the limiting part along the first direction is larger than that of the guiding part; the movable template is provided with a guide slot hole which is communicated along the third direction, the guide slot hole extends along the second direction, the width of the guide slot hole is equal to that of the guide part along the first direction, and the length of the guide slot hole along the second direction is greater than that of the guide part; the movable template is sleeved on the guide part through the guide groove hole.

According to one embodiment of the present invention, wherein: the guide positioning plate is connected to the bracket through a plurality of fastening bolts, and the fastening bolts are arranged at intervals along the second direction; and/or adjusting an adjusting bolt arranged on the guide positioning plate, wherein the adjusting bolt is positioned on the part of the limiting part which is not overlapped with the guide part, and the guide positioning plate is configured to adjustably abut against the movable template through the adjusting bolt.

According to one embodiment of the present invention, wherein: the preset inclination angle is 45 degrees.

According to one embodiment of the invention, the second end of the movable template is provided with a push-pull handle.

According to the technical scheme, the positioning device provided by the invention has the advantages and positive effects that:

the positioning device comprises a support, a fixing unit and a movable template, wherein the first part of the positioning device can be fixed on the outer side surface of a rim of a wheel of a railway locomotive through the fixing unit, the tip is abutted against the rim of the wheel by sliding the movable template, and the positioning direction of the rim lubricating nozzle is kept at a preset inclination angle with the outer side surface of the rim, and the rim lubricating nozzle is kept at a preset distance from a target area at the root of the rim. Therefore, the invention overcomes the problems that the positioning adjustment of the wheel rim lubrication nozzle is carried out through the human visual estimation of the size, the time and the labor are wasted, and the positioning of the nozzle is poor in the field. The invention can greatly reduce the locomotive maintenance time and cost, improve the manual operation intensity and improve the locomotive operation quality.

Drawings

Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:

FIG. 1 is a perspective view of a positioning device according to an exemplary embodiment;

FIG. 2 is a perspective view of a bracket of the positioning device shown in FIG. 1;

FIG. 3 is a perspective view of a guide positioning plate of the positioning device shown in FIG. 1;

FIG. 4 is a schematic perspective view of a movable platen of the positioning apparatus shown in FIG. 1;

fig. 5 is a schematic view of a use state of the positioning device shown in fig. 1.

The reference numerals are explained below:

110. a support; 141. a limiting part;

111. a first part; 142. a guide portion;

112. a second section; 143. fastening a bolt;

1121. a third end; 144. adjusting the bolt;

1122. a fourth end; 200. a rim lubrication nozzle;

1123. sharp corners; 300. a wheel;

113. an avoidance groove; 301. a rim outer side surface;

120. a movable template; 302. a rim;

121. a first end; 303. a tread;

122. a second end; 304. an inner side surface of the rim;

123. positioning a groove; A. a direction of extension;

124. a tip; x. a first direction;

125. a guide slot hole; y. a second direction;

126. a push-pull handle; z, a third direction;

130. a switchable magnetic base; alpha, presetting a dip angle;

140. guiding a positioning plate; d. distance.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are accordingly to be regarded as illustrative in nature and not as restrictive.

In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "over," "between," "within," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.

Referring to fig. 1, a perspective view of a positioning device according to the present invention is representatively illustrated. In the exemplary embodiment, the positioning device of the present invention is illustrated as being applied to positioning a rim lubrication nozzle 200 of a rail locomotive. Those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, or other changes may be made to the embodiments described below in order to adapt the relevant design of the present invention to the positioning of other devices, and such changes are within the scope of the principles of the positioning apparatus as set forth herein.

As shown in fig. 1, in the present embodiment, according to an aspect of the present invention, the positioning device provided by the present invention includes a support 110 and a movable die plate 120. Referring to fig. 2 to 5, fig. 2 representatively illustrates a perspective view of a bracket 110 of the positioning device; fig. 3 representatively shows a perspective view of a guide positioning plate 140 of the positioning device; a perspective view of the movable die plate 120 of the positioning device is representatively illustrated in fig. 4; fig. 5 representatively illustrates a schematic view of a state of use of the positioning apparatus. The structure, connection mode and functional relationship of the main components of the positioning device proposed by the present invention will be described in detail below with reference to the above drawings.

As shown in fig. 1 to 5, in the present embodiment, the bracket 110 includes a first portion 111 extending in the first direction X, and the first portion 111 is provided with a fixing unit. The holder 110 has the rim outer surface 301 of the wheel 300 as a positioning reference surface, and the holder 110 can serve as a base for the adjustment and positioning device and can mount the movable die plate 120. The movable platen 120 is slidably disposed on the bracket 110, and a sliding direction of the movable platen 120 relative to the bracket 110 is a second direction Y, and the second direction Y is perpendicular to the first direction X. Accordingly, the present invention enables the rim lubrication nozzle 200 to maintain a desired spacing from the rim 302 and a desired angle with the rim surface by sliding the movable die plate 120. The invention can meet the adjustment and positioning of the wheel rim lubricating nozzle 200 of a prototype wheel 300 of a newly manufactured locomotive and an abraded wheel 300 of an overhaul locomotive, and can also meet the use requirements of different abrasion of the wheel 300 tread 303 and different thicknesses of the wheel rim 302 of the locomotive running at a section. The movable die plate 120 may be designed according to the installation size requirements of the rim lubrication nozzle 200, and has the function of accurately positioning the rim lubrication nozzle 200. The movable die plate 120 has a first end 121 and a second end 122 along the second direction Y, and the first end 121 is provided with a positioning groove 123 and a tip 124. The positioning slot 123 has a predetermined length, and extends through the first end 121 in an extending direction a, and the extending direction a of the positioning slot 123 is parallel to a reference plane defined by the first direction X and the second direction Y, and has a predetermined inclination angle α with respect to the second direction Y. The present invention enables the positioning dimensions of rim lubrication nozzle 200 to be determined by removable template 120. The tip 124 is located at one end of the positioning slot 123. Accordingly, the positioning device can fix the first portion 111 to the rim outer side surface 301 of the rail locomotive wheel 300 through the fixing unit, make the tip 124 abut against the rim 302 of the wheel 300 by sliding the movable die plate 120, and position the rim lubrication nozzle 200 through the positioning groove 123, so that the positioning direction of the rim lubrication nozzle 200 is maintained to have the preset inclination angle α with the rim outer side surface 301, and the rim lubrication nozzle 200 is maintained to be a preset distance from the target area at the root of the rim 302. In other words, when the rim lubrication nozzle 200 is positioned according to the present invention, the first direction X is parallel to the rim outer side surface 301, i.e. the radial direction of the wheel 300, and the second direction Y is the wheel axis direction of the wheel 300.

Through the design, the invention overcomes the problems that the positioning adjustment of the rim lubrication nozzle 200 is carried out through the human visual estimation of the size, the time and the labor are wasted, and the nozzle positioning is poor in the prior art. The invention can greatly reduce the locomotive maintenance time and cost, improve the manual operation intensity and improve the locomotive operation quality. Moreover, according to the technical requirements of the installation of the rim lubrication nozzle 200, the size of the movable template 120 can be changed, so that the oil-gas type rim lubrication nozzle 200 can be widely suitable for the adjustment of the oil-gas type rim lubrication nozzles 200 of various rail rolling stock, and the application range is wide. The invention can solve the problems of rapid abrasion of the rim 302 of the wheel 300 and wheel-rail friction noise when a locomotive curve passes due to the fact that the rim 302 lubricant cannot be effectively sprayed to the rim 302 of the wheel 300 because the rim 300 lubricating nozzle 200 of the railway locomotive wheel is not accurately adjusted and positioned. The invention can reduce the working difficulty and the maintenance time for adjusting the position of the wheel rim lubricating nozzle 200 along with the diameter change of the locomotive application wheel 300, thereby reducing the maintenance cost. Meanwhile, the invention can improve the quality of locomotive maintenance and repair, and avoid the economic loss caused by replacing the wheel 300 due to the abnormal abrasion of the wheel rim 302.

Alternatively, as shown in fig. 1 and 2, in the present embodiment, the bracket 110 may further include a second portion 112, and the second portion 112 extends along the second direction Y. On this basis, the movable die plate 120 may be disposed on the second portion 112 of the support frame 110. Accordingly, the bracket 110 including the first portion 111 and the second portion 112 has a substantially right-angled corner-like structure, so that the structure of the rim outer side surface 301 and the tread surface 303 of the wheel 300 can be further matched, and the accuracy and stability of the positioning adjustment of the rim lubrication nozzle 200 can be further optimized.

Further, as shown in fig. 1, 2 and 5, based on the design that the bracket 110 includes the second portion 112, in the present embodiment, the second portion 112 has a third end 1121 and a fourth end 1122 along the second direction Y, the third end 1121 is connected to the first portion 111, the fourth end 1122 extends along the second direction Y, and a sharp corner 1123 may be disposed on a side of the fourth end 1122 facing the first portion 111. Accordingly, when the first portion 111 is fixed to the rim outer side surface 301, the sharp corner 1123 can abut against the tread surface 303 of the wheel 300. Additionally, the shape of the sharp corners 1123 may be, but is not limited to, triangular. Through the design, the shape of the tread 303 of the wheel 300 can be further matched, the tread 303 of the wheel 300 is always inclined and is abutted against the tread 303 by the sharp corner 1123, the arrangement of the second part 112 and the movable die plate 120 cannot be influenced by the inclination angle of the tread 303, namely, the second direction Y is parallel to the wheel axle direction of the wheel 300 and the distance between the second part 112 and the movable die plate tip 124 and the tread 303 of the wheel 300 can be ensured, so that the accuracy and the stability of the positioning adjustment of the rim lubricating nozzle 200 are realized, and meanwhile, the positioning of the rim 302 and the rim lubricating nozzle 200 can be met under various abrasion conditions of the wheel 300 because the positioner realizes the positioning by the first part 111 and the sharp corner 1123 of the bracket 110.

Specifically, as shown in fig. 5, based on the fact that the bracket 110 includes the second portion 112 and the fourth end 1122 of the second portion 112 has the pointed corner 1123 formed on the side facing the first portion 111, in the present embodiment, taking a specific specification of the wheel 300 as an example, the distance d between the pointed corner 1123 and the first portion 111 (specifically, the side where the first portion 111 contacts the rim outer side surface 301), that is, the distance between the apex 124 and the reference plane (the rim outer side surface 301) is 70mm in the second direction Y according to the dimension such as the distance between the rim outer side surface 301 and the tread surface 303 of the wheel 300.

Further, as shown in fig. 2, based on the design that the bracket 110 includes the second portion 112, in the present embodiment, an avoiding groove 113 may be provided at a side of a connection point of the first portion 111 and the second portion 112, the side facing the fourth end 1122. Through the design, the invention can avoid the abrasion and rolling of the tread 303 of the wheel 300 to interfere the positioning of the wheel 300 in the thickness direction (namely the wheel axle direction).

Alternatively, as shown in fig. 1 and 5, in the present embodiment, the switchable magnetic base 130 may be used as the fixing unit. Specifically, the switchable magnetic mount 130 is switchable between a magnetically on state and a magnetically off state. The switchable magnetic seat 130 has magnetism in a magnetically opened state, and accordingly can be magnetically attracted to the rim outer side surface 301, so that the first portion 111 of the bracket 110 is fixed on the rim outer side surface 301. After the positioning adjustment is completed, the switchable magnetic base 130 can be turned off, and the positioning device can be removed from the wheel 300 when the switchable magnetic base 130 in the turned-off state loses magnetism. Through the design, the wheel rim lubricating nozzle can be adjusted by an operator with hands conveniently and the mounting screw of the nozzle can be fastened.

Optionally, as shown in fig. 1, 3 and 4, in this embodiment, the positioning apparatus provided by the present invention may further include a guiding positioning plate 140. Specifically, the guiding and positioning plate 140 may be disposed on one side of the bracket 110 along the third direction Z, and includes a limiting portion 141 and a guiding portion 142. Wherein the third direction Z is perpendicular to the above-mentioned reference plane, i.e. the lateral direction. The guiding portion 142 is disposed on one side of the limiting portion 141 facing the bracket 110, and a width of the limiting portion 141 along the first direction X is greater than that of the guiding portion 142. On the basis of this, the movable die plate 120 is provided with a guide slot 125, i.e., a long-hole-shaped slide, penetrating in the third direction Z. The guide slot 125 extends along the second direction Y, and the width of the guide slot 125 and the width of the guide portion 142 along the first direction X are equal, and the length of the guide slot 125 along the second direction Y is greater than that of the guide portion 142. Accordingly, the movable die plate 120 is sleeved on the guide portion 142 through the guide slot 125, so that the movable die plate 120 can slide relative to the guide positioning plate 140 and the second portion 112 by the engagement of the guide slot 125 and the guide portion 142, and the guide portion 142 can provide a guide for the sliding of the movable die plate 120, that is, the guide positioning plate 140 can guide the movable die plate 120 to move directionally. During the positioning process, the relative position of the movable die plate 120 and the rolling circle of the wheel 300 can be determined, and the transverse free adjustment of the movable die plate 120 can be realized through the guiding positioning plate 140.

Further, as shown in fig. 1 and 3, based on the design that the positioning device includes the guide positioning plate 140, in the present embodiment, the guide positioning plate 140 may be connected to the bracket 110 by a plurality of fastening bolts 143, and the fastening bolts 143 may be arranged at intervals in the second direction Y.

Further, as shown in fig. 1 and 3, based on the design that the positioning device includes the guide positioning plate 140, in the present embodiment, the adjustment guide positioning plate 140 may be provided with an adjustment bolt located at a portion of the stopper 141 that does not overlap with the guide 142. Accordingly, the guide positioning plate 140 can adjustably abut against the movable die plate 120 by the adjustment bolt, and thus can be used to adjust the lateral movement friction of the movable die plate 120.

Alternatively, as shown in fig. 4, in the present embodiment, positioning grooves 123 may be respectively disposed on both sides of the first end 121 of the movable die plate 120 along the third direction Z.

Alternatively, as shown in fig. 1 and 4, in the present embodiment, the second end 122 of the movable die plate 120 may be provided with a push-pull handle 126. Through the above design, the present invention can more conveniently adjust the position of the movable die plate 120 by using the push-pull handle 126. In addition, the push-pull handle 126 may be, but is not limited to, bent from the second end 122 of the movable platen 120.

Specifically, as shown in fig. 5, in the present embodiment, taking the positioning requirement of a specific rim lubrication nozzle 200 as an example, the extending direction a of the positioning groove 123 may have a preset inclination angle α of 45 ° with respect to the second direction Y, and the preset length of the positioning groove may be 28 mm. The preset inclination angle α shown in the figure is an angle between the extending direction a of the positioning groove 123 and the rim inner side surface 304, and since the first direction X of the positioning device during positioning is parallel to the rim outer side surface 301, and the second direction Y is perpendicular to the first direction X, the angle shown in fig. 5 is equal to the preset inclination angle α of the extending direction a relative to the second direction Y. In some embodiments, the predetermined inclination angle α and the predetermined length of the positioning groove a can be flexibly adjusted according to the positioning requirements of different types of rim lubrication nozzles 200, and is not limited thereto.

It should be noted herein that the positioning devices illustrated in the accompanying drawings and described in the present specification are but a few examples of the wide variety of positioning devices that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are by no means limited to any details or any components of the positioning device shown in the drawings or described in the present specification.

In summary, the positioning device provided by the present invention includes the bracket 110, the fixing unit and the movable die plate 120, the first portion 111 can be fixed on the rim outer side surface 301 of the rail vehicle wheel 300 by the fixing unit, the center 124 can be abutted against the rim 302 of the wheel 300 by sliding the movable die plate 120, and the rim lubrication nozzle 200 can be positioned by the positioning groove 123, so that the positioning direction of the rim lubrication nozzle 200 can be maintained to have the preset inclination angle α with the rim outer side surface 301, and the rim lubrication nozzle 200 can be maintained to have the preset distance from the target area at the root of the rim 302. Accordingly, the invention overcomes the problems that the positioning adjustment of the rim lubrication nozzle 200 is carried out through the human visual estimation of the size, the time and the labor are wasted, and the nozzle positioning is poor in the prior art. The invention can greatly reduce the locomotive maintenance time and cost, improve the manual operation intensity and improve the locomotive operation quality.

Exemplary embodiments of the positioning device proposed by the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.

While the positioning device of the present invention has been described in terms of various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.