阅读说明：本技术 一种防松螺杆螺母组件 (Anti-loosening screw nut assembly ) 是由 赵永根 高国栋 赵建平 周俊伟 许剑财 苏程兴 李立文 耿正静 李艳 付雨泽 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种防松螺杆螺母组件,属于道岔转换设备中的杆件连接结构领域,包括螺杆、开口销、螺母和套接在螺杆上挡环,所述螺杆设有外螺纹和沿螺杆轴向设置的卡槽,所述螺母上设有内螺纹与所述螺杆的外螺纹配装,所述挡环上设有与所述卡槽配合的凸台,所述螺母与挡环通过开口销固定连接。本发明的防松螺杆螺母组件在将螺母拧紧后,通过开口销将挡环和螺母连接,在列车通过道岔时,列车轮对对尖轨产生冲击,表示拉杆受多个方向的应力,由于挡环通过凸台和螺杆卡槽配合,能有效防止调节螺母转动的可能。当转换设备扳动道岔时,表示拉杆随尖轨一起动作,表示拉杆主要在轴向受力,防松结构可防止表示拉杆在轴向发生窜动。(The invention discloses an anti-loosening screw and nut assembly, which belongs to the field of rod piece connecting structures in turnout conversion equipment and comprises a screw, a split pin, a nut and a baffle ring sleeved on the screw, wherein the screw is provided with an external thread and a clamping groove arranged along the axial direction of the screw, the nut is provided with an internal thread which is assembled with the external thread of the screw, the baffle ring is provided with a boss matched with the clamping groove, and the nut and the baffle ring are fixedly connected through the split pin. According to the anti-loosening screw nut assembly, after the nut is screwed down, the stop ring is connected with the nut through the split pin, when a train passes through a turnout, the train wheel pair impacts a switch rail to show that the pull rod is stressed in multiple directions, and the stop ring is matched with the screw clamping groove through the lug boss, so that the possibility of rotation of the adjusting nut can be effectively prevented. When the switch is pulled by the conversion equipment, the indication pull rod moves along with the switch rail, the indication pull rod is mainly stressed in the axial direction, and the anti-loosening structure can prevent the indication pull rod from shifting in the axial direction.)

1. The anti-loosening screw and nut assembly is characterized by comprising a screw, a split pin, a nut and a baffle ring sleeved on the screw, wherein the screw is provided with external threads and a clamping groove arranged along the axial direction of the screw, the nut is provided with internal threads which are matched with the external threads of the screw, the baffle ring is provided with a boss matched with the clamping groove, and the nut and the baffle ring are fixedly connected through the split pin.

2. The lockscrew nut assembly of claim 1, wherein the circular disk surface of the nut and the baffle ring are provided with a plurality of circular holes for the cotter to pass through, and the number of the circular holes on the circular disk surface of the nut is at least one.

3. A lockscrew nut assembly as claimed in claim 2, wherein the circular bore of the nut disc surface is at least six in number and evenly distributed over the nut disc surface.

4. A lockscrew nut assembly as defined in claim 2, wherein the circular holes of the disc surface of the nut are symmetrically distributed.

5. The lockscrew nut assembly of any one of claims 2 to 4 wherein the number of circular holes on the retainer ring is plural and is asymmetrically distributed.

6. A lockscrew nut assembly according to any one of claims 1 to 5 wherein the cotter pin is split between 60 ° and 90 °.

7. The lockscrew nut assembly of any one of claims 1 to 6 wherein the nut is in abutting engagement with the retainer ring.

8. A lockscrew nut assembly as claimed in any one of claims 1 to 7 further including a back nut for mounting on the end of the screw by which the retainer ring is secured to the screw.

9. The lockscrew nut assembly of claim 8 further comprising a spring washer disposed between the back nut and the retainer ring.

10. The anti-loose screw nut assembly according to any one of claims 1 to 9, further comprising two elastic pads and two back nuts for being mounted on the end of the screw, wherein the first elastic pad, the first back nut, the second elastic pad and the second back nut are sequentially arranged behind the retainer ring, and the retainer ring is fastened on the screw through the two back nuts and the elastic pads.

Technical Field

The invention relates to the field of connection structures, in particular to the field of connection structures in turnout conversion equipment, and particularly relates to a check screw nut assembly.

Background

The existing railway turnout installation device is characterized in that a display pull rod connects turnout conversion equipment and a turnout switch rail together through a tip iron, and a double-nut anti-loosening structure is adopted at a connecting joint of the display pull rod and the tip iron. When the turnout is switched, the pull rod is indicated to be subjected to axial force from the switching equipment; when a train passes through a turnout zone, the impact force of the train wheel pair on the switch rail indicates that the pull rod is stressed in multiple directions, and the double-nut anti-loosening structure can only prevent the shaft sleeve from loosening during rotating towards the right side.

Disclosure of Invention

The invention aims to solve the technical problem of providing a locking screw nut assembly which can overcome the impact of a train wheel pair on a switch rail and the stress generated by a plurality of directions on a representation pull rod in the switch conversion process and prevent the representation pull rod from moving so as to achieve the purposes of reducing representation faults, improving the transportation efficiency and ensuring the safety.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

on one hand, the invention provides an anti-loosening screw nut assembly which comprises a screw, a split pin, a nut and a retaining ring sleeved on the screw, wherein the screw is provided with an external thread and a clamping groove arranged along the axial direction of the screw, the nut is provided with an internal thread which is assembled with the external thread of the screw, the retaining ring is provided with a boss matched with the clamping groove, and the nut and the retaining ring are fixedly connected through the split pin.

Furthermore, all be equipped with on the disc face of nut and the fender ring and be used for the round hole that the split pin passed, wherein, the round hole quantity of the disc face of nut is a plurality of, round hole quantity is at least one on the fender ring.

Furthermore, the number of the round holes in the disc surface of the nut is at least six, and the round holes are uniformly distributed on the disc surface of the nut.

Furthermore, the circular holes of the disc surface of the nut are symmetrically distributed.

Furthermore, the number of the round holes on the baffle ring is multiple, and the round holes are distributed asymmetrically.

Further, the cotter pin is split at 60-90 degrees.

Further, the nut is connected with the baffle ring in a fitting mode.

Further, the screw rod fixing device further comprises a back nut used for being installed at the end of the screw rod, and the baffle ring is fastened on the screw rod through the back nut.

Furthermore, the elastic cushion is arranged between the back nut and the baffle ring.

Further, still including being used for installing two bullet pads and two back of the body mothers at the screw rod tip, set gradually first bullet pad, first back of the body mother, second bullet pad and second back of the body mother behind the fender ring, will keep off the ring fastening on the screw rod through two back of the body mothers and bullet pads.

After adopting such design, the invention has at least the following advantages:

(1) according to the anti-loosening screw nut assembly, after the nut is screwed down, the stop ring is connected with the nut through the split pin, when a train passes through a turnout, the train wheel pair impacts a switch rail to show that the pull rod is stressed in multiple directions, and the stop ring is matched with the screw clamping groove through the lug boss, so that the possibility of rotation of the adjusting nut can be effectively prevented. When the switch is pulled by the conversion equipment, the indication pull rod moves along with the switch rail, the indication pull rod is mainly stressed in the axial direction, and the anti-loosening structure can prevent the indication pull rod from shifting in the axial direction;

(2) the invention also forms a double anti-loosening structure by reinforcing the back nut, and the anti-loosening effect is not reduced due to the influence of vibration, time and environment.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a schematic structural view of one embodiment of a lockscrew nut assembly of the present invention;

FIG. 2 is a perspective view of one embodiment of the lockscrew nut assembly of the present invention.

The elastic buffer comprises a screw rod 1, a split pin 2, a baffle ring 3, a nut 4, a first elastic cushion 5, a first back nut 6, a second elastic cushion 7 and a second back nut 8.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The invention provides an embodiment of a locking screw nut assembly, which comprises a screw 1, a split pin 2, a nut 4 and a baffle ring 3 sleeved on the screw 1, wherein the screw 1 is provided with an external thread and a clamping groove 11 arranged along the axial direction of the screw 1, the nut 4 is provided with an internal thread which is assembled with the external thread of the screw, the baffle ring 3 is provided with a boss matched with the clamping groove 11, and the nut 4 and the baffle ring 3 are fixedly connected through the split pin 2, as shown in figures 1 and 2.

When the adjusting nut is used, after the nut is screwed in place, the boss of the retaining ring and the clamping groove of the screw rod are correspondingly sleeved on the screw rod, so that the boss is embedded into the clamping groove, and the retaining ring is matched with the screw rod to effectively prevent the adjusting nut from rotating. When the switch is pulled by the conversion equipment, the indication pull rod moves along with the switch rail, the indication pull rod is mainly stressed in the axial direction, and the anti-loosening structure can prevent the indication pull rod from shifting in the axial direction.

Generally, the nut 4 and the retainer ring 3 are in a snug connection.

As an improvement, the disc surface of the nut 4 and the baffle ring 3 are both provided with round holes for the cotter 2 to pass through, wherein the number of the round holes of the disc surface of the nut 4 is a plurality, and the number of the round holes on the baffle ring 3 is at least one. Through set up a plurality of round holes on the nut, through the proper nut of screwing up, just can make one of them round hole align with the round hole of retaining ring to more convenient pass the split pin and fix, split pin 2 generally splits 60 ~ 90.

Further, the number of the circular holes of the disk surface of the nut 4 may be at least three, four, five, six, seven, eight or more, preferably more than six, and the circular holes are uniformly distributed on the disk surface of the nut 4. Certain round hole quantity, can be more convenient with keep off the round hole of ring and align, keep off the round hole of ring and be one at least, also can be for two, three or more, asymmetric distribution is good when a plurality of, also can be symmetrical structure, and the round hole on the nut uses symmetric distribution to be good.

In order to reinforce the anti-loosening effect, the screw rod locking device further comprises a back nut (6 or 8) used for being installed at the end of the screw rod 1, and the baffle ring 3 is fastened on the screw rod 1 through the back nut (6 or 8). An elastic pad 5 can also be arranged between the back nut 6 and the baffle ring 3.

The preferred scheme is that two elastic cushions and two back nuts are arranged at the end part of the screw rod 1, a first elastic cushion 5, a first back nut 6, a second elastic cushion 7 and a second back nut 8 are arranged behind the baffle ring 3 in sequence, and the baffle ring 3 is fastened on the screw rod 1 through the two back nuts and the elastic cushions.

When the adjustable spring washer is used, the adjustable spring washer comprises a threaded rod 1 with a groove, a split pin 2, a baffle ring 3, an adjusting nut 4, a spring washer 5 and a back nut 6, wherein an external thread and a clamping groove are formed in the threaded rod 1 with the groove, a boss matched with the clamping groove is arranged on the baffle ring 3, a plurality of round holes are formed in the baffle ring 3, an internal thread matched with the external thread of the threaded rod 1 with the groove is formed in the adjusting nut 4, and a plurality of round holes are formed in the disc surface of the adjusting nut 4. Adjusting nut 4 and trough of belt screw 1 are through interior external screw thread fit, keep off boss embedding trough of belt screw 1's on the ring 3 draw-in groove in, laminate adjusting nut 4's disc face and fender ring 3 mutually, split 2 passes the round hole that both align to split 60 ~ 90 with split 2, trough of belt screw 1 tip adopts two back of the body female 6 and bullet pad 5 will keep off the ring fastening at trough of belt screw 1.

The screw anti-loose structure, namely the anti-loose nut screw component, is used for the indicating mechanism of turnout conversion equipment, can overcome the impact of a train wheel pair on a switch rail and the stress generated on an indicating pull rod in multiple directions in the turnout conversion process, and prevent the indicating pull rod from moving so as to achieve the purposes of reducing indicating faults, improving the transportation efficiency and ensuring the safety.

According to the anti-loosening screw nut assembly, after the nut is screwed down, the stop ring is connected with the nut through the split pin, when a train passes through a turnout, the train wheel pair impacts a switch rail to show that the pull rod is stressed in multiple directions, and the stop ring is matched with the screw clamping groove through the lug boss, so that the possibility of rotation of the adjusting nut can be effectively prevented. When the switch is pulled by the conversion equipment, the indication pull rod moves along with the switch rail, the indication pull rod is mainly stressed in the axial direction, and the anti-loosening structure can prevent the indication pull rod from shifting in the axial direction; the invention also forms a double anti-loosening structure by reinforcing the back nut, and the anti-loosening effect is not reduced due to the influence of vibration, time and environment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.