阅读说明：本技术 一种机车车辆排障器安装结构 (Locomotive pilot mounting structure ) 是由 辛淼 韩鹏飞 侯博 于 2021-09-09 设计创作，主要内容包括：本发明涉及一种机车车辆排障器安装结构,包括车体、排障器、斜支撑梁、支撑腿、前车体安装座、后车体安装座、支撑腿安装座和斜支撑梁安装座；所述前车体安装座水平固定在车体前侧底部,所述支撑腿安装座水平固定在支撑腿顶端,所述前车体安装座与支撑腿安装座通过垂直的螺纹紧固件固定连接；所述斜支撑梁安装座垂直固定在斜支撑梁顶端,所述后车体安装座的上端面与车体后侧底部平行固定连接,所述后车体安装座的下端面与斜支撑梁安装座平行固定连接,所述后车体安装座的下端面与斜支撑梁通过垂直的螺纹紧固件固定连接。本发明避免了排障器安装螺纹紧固件承受剪切力的情况,提高了安全系数；同时充分利用螺纹紧固件的轴向机械性能,利于设计的轻量化,降低成本和安装人员的工作强度。(The invention relates to a locomotive obstacle deflector mounting structure, which comprises a locomotive body, an obstacle deflector, an inclined support beam, a support leg, a front locomotive body mounting seat, a rear locomotive body mounting seat, a support leg mounting seat and an inclined support beam mounting seat, wherein the front locomotive body mounting seat is arranged on the front locomotive body mounting seat; the front vehicle body mounting seat is horizontally fixed at the bottom of the front side of the vehicle body, the supporting leg mounting seat is horizontally fixed at the top end of the supporting leg, and the front vehicle body mounting seat is fixedly connected with the supporting leg mounting seat through a vertical threaded fastener; the inclined supporting beam mounting seat is vertically fixed at the top end of the inclined supporting beam, the upper end face of the rear vehicle body mounting seat is fixedly connected with the bottom of the rear side of the vehicle body in parallel, the lower end face of the rear vehicle body mounting seat is fixedly connected with the inclined supporting beam mounting seat in parallel, and the lower end face of the rear vehicle body mounting seat is fixedly connected with the inclined supporting beam through a vertical threaded fastener. The invention avoids the condition that the mounting threaded fastener of the pilot is subjected to shearing force, and improves the safety factor; meanwhile, the axial mechanical property of the threaded fastener is fully utilized, the light weight of design is facilitated, and the cost and the working strength of installation personnel are reduced.)

1. The utility model provides a locomotive pilot unit mounting structure, includes automobile body and pilot unit, pilot unit upper surface middle part is provided with respectively and is used for supporting beam and supporting leg to one side with the car connection, its characterized in that: the structure also comprises a front vehicle body mounting seat, a rear vehicle body mounting seat, a supporting leg mounting seat and an inclined supporting beam mounting seat; the front vehicle body mounting seat is horizontally fixed at the bottom of the front side of the vehicle body, the supporting leg mounting seat is horizontally fixed at the top end of the supporting leg and corresponds to the front vehicle body mounting seat in position, and the front vehicle body mounting seat is fixedly connected with the two sides of the supporting leg mounting seat through vertical threaded fasteners; the inclined supporting beam mounting seat is vertically fixed at the top end of the inclined supporting beam, the upper end face of the rear vehicle body mounting seat is fixedly connected with the bottom of the rear side of the vehicle body in parallel, the lower end face of the rear vehicle body mounting seat is fixedly connected with the inclined supporting beam mounting seat in parallel, and the lower end face of the rear vehicle body mounting seat is fixedly connected with the two sides of the inclined supporting beam through vertical threaded fasteners.

2. A rail deflector mounting structure for a rolling stock according to claim 1, wherein: the middle area of the opposite surface of the front vehicle body mounting seat and the supporting leg mounting seat is provided with a sawtooth structure with the same size, and the front vehicle body mounting seat and the supporting leg mounting seat are meshed with each other through the sawtooth structure.

Technical Field

The invention relates to the technical field of vehicle equipment, in particular to a locomotive obstacle deflector mounting structure.

Background

The obstacle deflector is a component which is arranged at the front end of the locomotive vehicle and is close to the track, and mainly plays a role in removing obstacles on the track when the locomotive runs. The obstacle deflector is required to resist the pressure of 140KN on the front surface in the industry standard, and meanwhile, the obstacle deflector is arranged at the foremost end of the locomotive in operation, so that the installation reliability requirement is very high, and the connecting structure of the obstacle deflector and the steel structure of the locomotive body is also important besides the strength of the obstacle deflector. Because the pilot is required to be dismantled when the daily maintenance or repair, the current pilot and the vehicle body are connected and installed in a simple connection mode of a mounting seat and a threaded fastener, and the pilot is convenient to dismantle. The fastener must bear the weight of the barrier and the impact load which may be generated during the operation. The fastener of great specification, higher mechanical grade, great mount pad are usually adopted for improving factor of safety, then need bigger installation space, bigger mounting tool when causing the equipment, are unfavorable for production efficiency, are unfavorable for designing the lightweight.

The existing solution is that the obstacle deflector and the steel structure of the locomotive body are respectively welded with mounting seats with holes, and the obstacle deflector and the steel structure of the locomotive body are mounted and connected in a threaded fastener fastening mode. By adopting the installation mode, when the obstacle deflector collides with an obstacle on a rail, the transmission modes of the generated longitudinal impact force along the vehicle length direction sequentially comprise: the structure of the obstacle deflector, the installation seat of the obstacle deflector, the friction pair between the installation seats, the installation seat of the vehicle body and the steel structure of the vehicle body. It can be known that the maximum static friction force between the mounting seats is larger than 140kN to ensure that the obstacle deflector is firmly mounted. The friction force is a positive pressure x friction coefficient, so that a sufficient pressure force needs to be generated between the two mounting seats. Threaded fastener shanks are subject to shear forces in two situations: firstly, when deviation occurs in installation, the threaded fastener rod is attached to the installation hole; and secondly, when the friction force between the mounting seats is smaller than the impact load, the mounting seats are displaced.

The shearing force that threaded fastener class fastener can bear is far less than the axial force, once threaded fastener receives the shear failure, can cause the pilot unit pine to take off, arouses bigger potential safety hazard. Therefore, shearing of the threaded fastener should be avoided as much as possible. However, the obstacle deflector is of a welded structure, and large welding deformation exists, and manufacturing cost is increased for ensuring installation accuracy. In addition, in the environment of locomotive maintenance operation, grease substances are visible everywhere (lubrication and rust prevention), the probability that the mounting surface of the obstacle deflector touches the grease is high, the friction coefficient is reduced due to the grease, friction is reduced, the obstacle deflector needs to be specially protected, and the maintenance operation cost is increased.

In conclusion, when the connecting device is installed by adopting the existing connecting scheme, a higher and larger-size installation threaded fastener can be selected in design, so that sufficient pressure and sufficient shearing resistance are ensured. While higher mechanical performance threaded fasteners increase cost; larger threaded fasteners require larger structural space, which is not conducive to light weight design; and the corresponding larger torque requirement can increase the working strength of installation personnel or increase special tooling equipment.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a mounting structure for a rail guard of a rolling stock, which changes the mounting structure of the rail guard to enable a mounting threaded fastener to bear only axial tension without bearing shearing force, thereby reducing the specification of the threaded fastener, reducing the manufacturing and maintenance costs, and reducing the mounting operation strength.

The technical scheme adopted by the invention is as follows:

the invention provides a locomotive obstacle deflector mounting structure, which comprises a locomotive body and an obstacle deflector, wherein the middle part of the upper surface of the obstacle deflector is respectively provided with an inclined supporting beam and a supporting leg which are used for being connected with the locomotive body, and the locomotive obstacle deflector mounting structure is characterized in that: the structure also comprises a front vehicle body mounting seat, a rear vehicle body mounting seat, a supporting leg mounting seat and an inclined supporting beam mounting seat; the front vehicle body mounting seat is horizontally fixed at the bottom of the front side of the vehicle body, the supporting leg mounting seat is horizontally fixed at the top end of the supporting leg and corresponds to the front vehicle body mounting seat in position, and the front vehicle body mounting seat is fixedly connected with the two sides of the supporting leg mounting seat through vertical threaded fasteners; the inclined supporting beam mounting seat is vertically fixed at the top end of the inclined supporting beam, the upper end face of the rear vehicle body mounting seat is fixedly connected with the bottom of the rear side of the vehicle body in parallel, the lower end face of the rear vehicle body mounting seat is fixedly connected with the inclined supporting beam mounting seat in parallel, and the lower end face of the rear vehicle body mounting seat is fixedly connected with the two sides of the inclined supporting beam through vertical threaded fasteners.

Furthermore, the middle area of the opposite surface of the front vehicle body mounting seat and the supporting leg mounting seat is provided with sawtooth structures with the same size, and the front vehicle body mounting seat and the supporting leg mounting seat are meshed with each other through the sawtooth structures.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, through a structural design, the condition that the mounting threaded fastener of the pilot is subjected to shearing force is avoided, and the safety coefficient is improved; meanwhile, the threaded fastener does not bear shearing force any more, the axial mechanical property of the threaded fastener can be fully utilized, the specification and the grade of the threaded fastener are properly reduced, the design refinement (light weight) is facilitated, and the cost is reduced; and moreover, the working strength of installation personnel can be effectively reduced by smaller installation moment.

Drawings

FIG. 1 is a schematic overall structural view of an embodiment of a vehicle barrier mounting structure of a rolling stock according to the present invention;

FIG. 2 is a schematic view of the connection of the support leg mount and the inclined support beam mount with the pilot;

FIG. 3 is a schematic view of the support leg in connection with the vehicle body;

FIG. 4 is a schematic view of the connection of the diagonal support beam to the vehicle body;

FIG. 5 is a schematic top view of the attachment end of the obstacle deflector to the vehicle body;

wherein, the reference numbers: 1-a vehicle body; 2-a barrier removal device; 3-supporting legs; 4-an inclined support beam; 5-front vehicle body mounting seat; 6-rear vehicle body mounting seat; 7-support leg mounting base; 8-an inclined support beam mounting seat; 9-a threaded fastener; 10-saw tooth structure.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

It should be noted that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not mean that a device or an element must have a specific orientation, be configured and operated in a specific orientation.

Referring to fig. 1 to 5, a detailed structure of an embodiment of a vehicle barrier mounting structure according to the present invention is shown. The structure comprises a vehicle body 1 and a barrier removing device 2, wherein the middle part of the upper surface of the barrier removing device 2 is respectively provided with a supporting leg 3 and an inclined supporting beam 4 which are used for being connected with the bottoms of the front side and the rear side of the vehicle body 1; the device also comprises a front vehicle body mounting seat 5, a rear vehicle body mounting seat 6, a supporting leg mounting seat 7 and an inclined supporting beam mounting seat 8; the front vehicle body mounting seat 5 is horizontally welded at the bottom of the front side of the vehicle body 1, the supporting leg mounting seat 7 is horizontally welded at the top end of the supporting leg 3 and corresponds to the position of the front vehicle body mounting seat 5, and the front vehicle body mounting seat 5 is fixedly connected with two sides of the supporting leg mounting seat 7 through vertical threaded fasteners 9; the inclined supporting beam mounting seat 8 is perpendicularly welded on the top end of the inclined supporting beam 4, the upper end face of the rear vehicle body mounting seat 6 is welded with the bottom of the rear side of the vehicle body 1 in parallel, the lower end face of the rear vehicle body mounting seat 6 is fixedly connected with the inclined supporting beam mounting seat 8 in parallel, the lower end face of the rear vehicle body mounting seat 6 is fixedly connected with the two sides of the inclined supporting beam mounting seat 8 through the vertical threaded fasteners 9, so that the horizontal longitudinal load component transmitted along the inclined supporting beam 4 vertically acts on the working faces of the rear vehicle body mounting seat 6 and the inclined supporting beam mounting seat 8, the two mounting seats are mutually pushed and pressed, and the threaded fasteners 9 between the two mounting seats mainly bear the axial tensile stress generated by the screwing force and are only used for resisting the component of the vertical load of the obstacle deflector 2.

In this embodiment, the middle areas of the opposite surfaces of the front vehicle body mounting seat 5 and the supporting leg mounting seat 7 are provided with sawtooth structures 10 with the same size, and when the obstacle deflector 2 is mounted, the front vehicle body mounting seat 5 and the supporting leg mounting seat 7 are meshed with each other through the sawtooth structures 10. When the barrier 2 is subjected to a horizontal longitudinal impact load, the load is transmitted to the steel structure of the vehicle body 1 through the support leg 3, the front vehicle body mounting seat 5 engaged with the teeth and the support leg mounting seat 7, and the threaded fastener 9 perpendicular to the mounting seats only bears a vertical load (bolt axial direction). Also when the barrier 2 is subjected to horizontal longitudinal impact load, the load is also transmitted to the steel structure of the vehicle body 1 through the inclined support beam 4, the inclined support beam mounting seat 8 and the rear vehicle body mounting seat 6, and the threaded fastener 9 perpendicular to the rear vehicle body mounting seat 6 still only bears vertical load (bolt axial direction).

The threaded fastener 9 may be a combination of a bolt, a nut, and a washer, or a combination of a screw, a threaded hole, and a washer.

The working principle of the invention is as follows: firstly, replacing a friction connecting amplitude of a fastener by a tooth meshing structure for conducting horizontal longitudinal load; secondly, the horizontal direction load is converted into the oblique load by utilizing the arranged oblique supporting beam structure, the pushing structure between the mounting seats replaces the friction connecting amplitude of the fastener to transmit the horizontal longitudinal load, and meanwhile, the load is transmitted along the oblique supporting beam, so that the mechanical property of the material is fully utilized, and the bearing structure is optimized.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.