CN114670895A - Point switch indicating rod adjusting mechanism - Google Patents
Point switch indicating rod adjusting mechanism Download PDFInfo
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- CN114670895A CN114670895A CN202210256698.8A CN202210256698A CN114670895A CN 114670895 A CN114670895 A CN 114670895A CN 202210256698 A CN202210256698 A CN 202210256698A CN 114670895 A CN114670895 A CN 114670895A
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- Prior art keywords
- worm
- hole
- screw
- rod
- mounting seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a point switch indicating rod adjusting mechanism, comprising: the mounting seat, the worm wheel and the screw rod; the worm is rotatably arranged on the mounting seat; the worm wheel is rotatably arranged on the mounting seat and meshed with the worm, and a screw hole is formed in the worm wheel; the screw rod penetrates through the screw hole and is in threaded fit with the screw hole, and the screw rod is suitable for being connected with the indicating rod. The invention mainly utilizes a worm gear structure to replace the original shaft sleeve structure with and without buckles, the worm gear structure has a large transmission ratio, strong bearing capacity, stable and reliable transmission, and particularly has self-locking property, thereby improving the structural stability and safety and simplifying mechanical parts.
Description
Technical Field
The invention relates to the technical field of switch machines, in particular to a switch machine indication rod adjusting mechanism.
Background
With the continuous development of high-speed railways in China, the requirements on the stability and the safety of the existing turnout transformation equipment are higher and higher, and the length of a rod piece of a point switch indication rod is required to be adjusted frequently in field maintenance so as to ensure that a point switch indication notch meets the standard requirement.
In the application of the existing adjusting mechanism, the adjusting structure is shown in fig. 1, which shows that a rod is screwed on a shaft sleeve with a buckle and without the buckle on a circular hole of a screw joint, the shaft sleeve with the buckle is driven to move on a display connecting rod by rotating the shaft sleeve without the buckle to adjust the display, and after the display is adjusted, the shaft sleeve without the buckle is abutted against a standby fastener by a nut to be fixed. Some problems exist in this kind of structure, for example there is the knot when current structure exists the adjustment, do not have the easy dropout problem of knot axle sleeve interlock, and can't reach the fine setting operation, for example indicate the adjustment at the switch again and finish, appear the data change shock transform after adjusting because of the inside rust of pin and box cover axle sleeve, reason such as the cap nut fastening is bad, and daily equipment is locking, the anticreep all relies on fastening nut and bullet pad, appear fastening not in place the condition occasionally because of reasons such as operation careless leak.
In view of this, a new adjustment structure with simple structure, convenient operation and uneasy loosening needs to be designed.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to provide a switch machine indication rod adjustment mechanism.
The technical scheme of the invention is as follows: a switch machine indicating rod adjustment mechanism comprising: the mounting seat, the worm wheel and the screw rod;
The worm is rotatably arranged on the mounting seat; the worm wheel is rotatably arranged on the mounting seat and meshed with the worm, and a screw hole is formed in the worm wheel; the screw rod penetrates through the screw hole and is in threaded fit with the screw hole, and the screw rod is suitable for being connected with the indicating rod.
Further, the inside cavity that is equipped with of mount pad, the worm wheel with the worm all rotates to be located in the cavity, the left end of mount pad is equipped with first through-hole, and the right-hand member is equipped with the second through-hole, first through-hole with the second through-hole all with the cavity intercommunication, the lead screw passes the second through-hole with screw thread fit and follow first through-hole is worn out.
Furthermore, a third through hole is formed in the front end of the mounting seat, a fourth through hole is formed in the rear end of the mounting seat, the third through hole and the fourth through hole are communicated with the cavity, the front end of the worm is rotatably arranged in the third through hole in a penetrating mode, and the rear end of the worm is rotatably arranged in the fourth through hole in a penetrating mode; the screw shaft is fixedly connected with the front end of the worm, the adjusting head is fixedly connected with the rear end of the worm, and the locking nut is in threaded connection with the screw shaft and can be abutted to the mounting seat.
Further, the locking nut is a wing nut.
Furthermore, the adjusting head is a square head, the worm is a single-head worm, 50 teeth are arranged on the worm wheel, internal threads on the screw hole and external threads on the screw rod are both trapezoidal threads, and the thread pitch of the trapezoidal threads is 5 mm.
Further, one end of the worm extends out of the mounting seat; the screw shaft is fixedly connected with the extending end of the worm, the adjusting head is fixedly connected with one end, far away from the worm, of the screw shaft, and the locking nut is in threaded connection with the screw shaft and can be abutted to the mounting seat.
Compared with the prior art, the invention has the following beneficial effects:
1. the original shaft sleeve structure with a buckle or without a buckle is replaced by a worm and gear structure, and the worm and gear structure has a large transmission ratio, strong bearing capacity, stable and reliable transmission, and particularly has self-locking property, so that the structural stability and safety are improved, and mechanical parts are simplified;
2. one end of the worm is provided with a screw shaft and a locking nut, so that the anti-loosening function can be enhanced again besides the self-locking property of the worm and gear, and the fixing anti-loosening effect on the worm gear can be effectively enhanced by fastening the nut in daily work;
3. The adjusting head is set to be a square head, the worm is a single-head worm, 50 teeth are arranged on the worm wheel, internal threads on the screw hole and external threads on the screw rod are trapezoidal threads, and the thread pitch of the trapezoidal threads is 5mm, so that after a thread pitch value and a gear transmission ratio are optimized, the scale value is correspondingly quantized, the turnout gap value can be accurately adjusted at one time, the fine operation level of the turnout indication gap is improved, and the operation is simple and easy to operate.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments or solutions of the present invention in the prior art, the drawings used in the description of the embodiments or solutions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts based on these drawings:
FIG. 1 is a prior art adjustment mechanism showing a lever;
FIG. 2 is a schematic view of embodiment 1 of the present invention;
FIG. 3 is a top view of embodiment 1 of the present invention;
FIG. 4 is a front view of embodiment 1 of the present invention;
FIG. 5 is a rear view of embodiment 1 of the present invention;
FIG. 6 is a front view of embodiment 2 of the present invention;
fig. 7 is a top view of embodiment 2 of the present invention.
Reference numerals are as follows:
1. a mounting base; 2. a worm; 3. a worm gear; 4. a screw rod; 5. a screw shaft; 6. a lock nut; 7. the head is adjusted.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", "radial", "axial", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Example 1
A switch machine indication rod adjusting mechanism of embodiment 1 will be described below with reference to fig. 2 to 5 of the accompanying drawings, the mechanism comprising: the worm gear comprises a mounting seat 1, a worm 2, a worm wheel 3 and a screw rod 4.
As shown in fig. 2, the worm 2 is rotatably mounted on the mounting base 1; the worm wheel 3 is rotatably arranged on the mounting seat 1 and is meshed with the worm 2, and a screw hole is formed in the worm wheel 3; the screw rod 4 penetrates through the screw hole and is in threaded fit with the screw hole, and the screw rod 4 is suitable for being connected with the indicating rod.
Particularly, the inside cavity that is equipped with of mount pad 1, worm wheel 3 and worm 2 all rotate and locate in the cavity, and the left end of mount pad 1 is equipped with first through-hole, and the right-hand member is equipped with the second through-hole, and first through-hole and second through-hole all communicate with the cavity, and lead screw 4 passes the second through-hole and passes out with screw thread fit and follow first through-hole, can realize lead screw 4 and worm wheel 3's threaded connection from this.
The front end of mount pad 1 is equipped with the third through-hole, and the rear end of mount pad 1 is equipped with the fourth through-hole, and third through-hole and fourth through-hole all communicate with the cavity, and the front end of worm 2 rotationally wears to establish in the third through-hole, and the rear end of worm 2 rotationally wears to establish in the fourth through-hole, can realize worm 2's rotation installation from this.
In practical application, the worm wheel 3 can be driven to rotate by rotating the worm 2, the screw rod 4 can be driven to move after the worm wheel 3 rotates so as to drive the indicating rod to rotate, the adjustment of the indicating notch of the rutting machine is realized, and the structure is simple and convenient to operate.
The worm wheel 3 and the worm 2 are adopted, because the worm wheel 3 and the worm 2 can have a large transmission ratio, the bearing capacity is high, the transmission is stable and reliable, and particularly, the mechanism has self-locking performance, namely when the lead angle of the worm 2 is smaller than the equivalent friction angle between the teeth of the worm wheel 3, the mechanism has self-locking performance, reverse self-locking can be realized, namely, only the worm 2 can drive the worm wheel 3, but not the worm wheel 3 can drive the worm 2, therefore, once the adjustment is finished, the position of the screw rod 4 cannot easily fluctuate, the anti-loosening and anti-falling effects are good, and the size of a gap represented by the point switch machine cannot suddenly change.
Further, as shown in fig. 3-5, a screw shaft 5 and an adjusting head 7 may be respectively disposed at two ends of the worm 2, wherein the screw shaft 5 is fixedly connected to the front end of the worm 2, the adjusting head 7 is fixedly connected to the rear end of the worm 2, and the locking nut 6 is in threaded connection with the screw shaft 5 and may abut against the mounting base 1.
After the adjusting head 7 is arranged, a spanner is convenient to clamp the adjusting head 7 and rotate the worm 2 for adjustment; behind the spiral shell axle 5 and the lock nut 6 that set up, can strengthen locking function once more outside the auto-lock nature of worm wheel 3 worm 2 itself, in daily work, through fastening this nut, just can effectively strengthen the fixed locking effect to worm wheel 3. In practice, the locking nut 6 is a wing nut, thereby facilitating manual tightening of the nut.
Further, as shown in fig. 2, the adjusting head 7 is a square head, the worm 2 is a single-head worm 2, 50 teeth are arranged on the worm wheel 3, the internal thread on the screw hole and the external thread on the screw rod 4 are both trapezoidal threads, and the thread pitch of the trapezoidal threads is 5 mm.
Particularly, trapezoidal thread's interior external screw thread is with the tight difficult not hard up of conical surface subsides, consequently use trapezoidal thread here, because worm 2 is single-end worm 2, consequently worm 2 is rotatory a week, worm wheel 3 can rotate a tooth, corresponding lead screw 4 then axial displacement 0.1mm, because adjusting head 7 is square head, consequently adjusting head 7 rotatory one face can realize that minimum adjustable volume is 0.025mm, consequently after having optimized the screw pitch value, the gear drive ratio, also corresponding quantization adjustment scale interval value, thereby can accomplish the disposable accurate adjustment of switch breach value, and easy operation is easy to get on hand.
Example 2
Example 2 is a further modification of example 1. As shown in fig. 6 and 7, in embodiment 2, only one end of the worm 2 extends out of the mounting base 1, the screw shaft 5 and the adjusting head 7 are both disposed at the same end of the worm 3, that is, the screw shaft is fixedly connected with the worm 2, the adjusting head 7 is disposed at the end of the screw shaft 5 away from the worm 2, the locking nut 6 is disposed on the screw shaft 5, the worm 2 can be fixed after the locking nut 6 is screwed down, and the worm 2 can be rotated through the adjusting head 7 after the locking nut 6 is unscrewed.
In conclusion, the mechanism has the following characteristics:
1. the original shaft sleeve structure with a buckle or without a buckle is replaced by the worm wheel 3 and worm 2 structure, the worm wheel 3 and worm 2 structure has a large transmission ratio, strong bearing capacity, stable and reliable transmission, and particularly has self-locking property, so that the structural stability and safety are improved, and mechanical parts are simplified;
2. one end of the worm 2 is provided with a screw shaft 5 and a locking nut 6, so that the self-locking performance of the worm wheel 3 and the worm 2 can be enhanced, and the locking function can be enhanced again;
3. set adjusting head 7 to square head, worm 2 is single-end worm 2, is equipped with 50 teeth on the worm wheel 3, and internal thread on the screw and the external screw thread on the lead screw 4 are trapezoidal thread, and trapezoidal thread's pitch is 5mm, has optimized screw thread interval value, gear drive ratio like this after, also corresponding quantization adjustment scale interval value to accomplish the disposable accurate adjustment of switch breach value, improve the switch and show the operation level that becomes more meticulous of breach, and easy operation is easily handed.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A switch machine indicator rod adjustment mechanism, comprising: the mounting seat, the worm wheel and the screw rod;
the worm is rotatably arranged on the mounting seat; the worm wheel is rotatably arranged on the mounting seat and meshed with the worm, and a screw hole is formed in the worm wheel; the screw rod penetrates through the screw hole and is in threaded fit with the screw hole, and the screw rod is suitable for being connected with the indicating rod.
2. The switch machine indicating rod adjusting mechanism of claim 1, wherein a cavity is formed in the mounting base, the worm wheel and the worm are rotatably disposed in the cavity, a first through hole is formed in the left end of the mounting base, a second through hole is formed in the right end of the mounting base, the first through hole and the second through hole are communicated with the cavity, and the screw rod penetrates through the second through hole, is in threaded fit with the screw hole and penetrates out of the first through hole.
3. A switch machine indicating rod adjusting mechanism as recited in claim 2, wherein the front end of the mounting base is provided with a third through hole, the rear end of the mounting base is provided with a fourth through hole, the third through hole and the fourth through hole are both in communication with the cavity, the front end of the worm is rotatably disposed in the third through hole, and the rear end of the worm is rotatably disposed in the fourth through hole;
The screw shaft is fixedly connected with the front end of the worm, the adjusting head is fixedly connected with the rear end of the worm, and the locking nut is in threaded connection with the screw shaft and can be abutted to the mounting seat.
4. A switch machine indication rod adjustment mechanism as claimed in claim 3, characterized in that the locking nut is a wing nut.
5. A switch machine indication rod adjustment mechanism as claimed in claim 3, characterized in that the adjustment head is a square head, the worm is a single-headed worm, 50 teeth are provided on the worm wheel, the internal thread on the screw hole and the external thread on the lead screw are both trapezoidal threads, and the pitch of the trapezoidal threads is 5 mm.
6. A switch machine indicating rod adjustment mechanism as recited in claim 2, wherein one end of the worm extends outwardly of the mounting block; the screw shaft is fixedly connected with the extending end of the worm, the adjusting head is fixedly connected with one end, far away from the worm, of the screw shaft, and the locking nut is in threaded connection with the screw shaft and can be abutted to the mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256698.8A CN114670895A (en) | 2022-03-16 | 2022-03-16 | Point switch indicating rod adjusting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210256698.8A CN114670895A (en) | 2022-03-16 | 2022-03-16 | Point switch indicating rod adjusting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114670895A true CN114670895A (en) | 2022-06-28 |
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ID=82073822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210256698.8A Pending CN114670895A (en) | 2022-03-16 | 2022-03-16 | Point switch indicating rod adjusting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114670895A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645720A (en) * | 2020-04-30 | 2020-09-11 | 浙江众合科技股份有限公司 | Intelligent switch machine capable of being autonomously controlled by train |
| CN212709435U (en) * | 2020-09-01 | 2021-03-16 | 太原市京丰铁路电务器材制造有限公司 | Travel adjusting mechanism for point switch, and locking rod, indicating rod and indicating rod for point mounting device comprising same |
| CN214874859U (en) * | 2021-04-30 | 2021-11-26 | 李瑞波 | Electric switch machine representation connecting rod adjusting mechanism |
-
2022
- 2022-03-16 CN CN202210256698.8A patent/CN114670895A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645720A (en) * | 2020-04-30 | 2020-09-11 | 浙江众合科技股份有限公司 | Intelligent switch machine capable of being autonomously controlled by train |
| CN212709435U (en) * | 2020-09-01 | 2021-03-16 | 太原市京丰铁路电务器材制造有限公司 | Travel adjusting mechanism for point switch, and locking rod, indicating rod and indicating rod for point mounting device comprising same |
| CN214874859U (en) * | 2021-04-30 | 2021-11-26 | 李瑞波 | Electric switch machine representation connecting rod adjusting mechanism |
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