CN214084267U

CN214084267U - Device for preventing tread defect of wheel detects with fly leaf slope

Info

Publication number: CN214084267U
Application number: CN201822061039.0U
Authority: CN
Inventors: 贺子铭; 马开富
Original assignee: Maanshan City Leishi Track Traffic Equipment Co ltd
Current assignee: Maanshan City Leishi Track Traffic Equipment Co ltd
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2021-08-31
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses a prevent device of wheel tread defect detection with fly leaf slope belongs to track traffic technical field. The utility model discloses a prevent device that tread defect detecting used fly leaf slope, including pendulum rod, connecting plate, slide rail mechanism and bottom plate, wherein the connecting plate passes through slide rail mechanism slidable mounting on the bottom plate, and the one end of pendulum rod rotates with the connecting plate and links to each other, and its other end rotates with the fly leaf with the detection and links to each other. Adopt the technical scheme of the utility model can prevent effectively that wheel roll extrusion in-process fly leaf from taking place the slope to be favorable to improving the accuracy of testing result.

Description

Device for preventing tread defect of wheel detects with fly leaf slope

Technical Field

The utility model belongs to the technical field of the rail transit, more specifically say, relate to a prevent that wheel tread defect from detecting with device of fly leaf slope.

Background

The tread radial runout of the train wheel set can bring extra impact vibration to the train in operation, so that the running quality of the train is reduced, the abrasion is aggravated, the safety and the service life of the train and a track facility are influenced, and even an axle is broken and collapsed, so that major accidents are caused. Therefore, the detection of the radial runout of the wheel tread has important significance for ensuring the driving safety of the train.

The main technology adopted at home and abroad is as follows: 1) electric signal detection method: when the train runs at a high speed, the wheels are separated from the rail surface when running to the scratch position, and a certain period of vacation time is provided; the length of the vacation time is related to the size of the bruise; the wheel emptying time is measured through an electric signal, and the degree of the wheel scratch can be obtained through simple conversion. 2) Sound detection method: the size and the position of the flat wheel are roughly judged by judging the size of the collision sound of the scratch and the steel rail. But the interference of adjacent wheels cannot be overcome, only the wheel set where the flat wheel is located can be judged, and the test precision is not high. 3) Contact measurement method: the movable plate 3 (shown in figure 1) which is always contacted with the top point of the wheel rim and can move up and down along with the wheel is arranged on the inner side of the track 1, the pressing displacement of the movable plate 3 in the rolling process of the wheel 2 is measured, and the radial runout and the abrasion loss of the wheel tread can be obtained according to the change of the pressing displacement of the movable plate 3.

Among them, the contact measurement method is concerned by many researchers because of its relatively high measurement accuracy and fast measurement speed, but when a train presses a movable plate from one end or leaves the movable plate from the other end, the movable plate is prone to tilt, thereby affecting the detection result. Therefore, the movable plate is prevented from inclining, and the surface level is ensured, which has important significance for the accuracy of the detection result.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

The utility model aims to overcome and adopt the contact method to examine time measuring to train wheel among the prior art, the fly leaf easily takes place the slope to influence the not enough of testing result, provide a device that prevents that tread defect from detecting with fly leaf slope. Adopt the technical scheme of the utility model can prevent effectively that wheel roll extrusion in-process fly leaf from taking place the slope to be favorable to improving the accuracy of testing result.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a prevent device that tread defect detecting used fly leaf slope, including pendulum rod, connecting plate, slide rail mechanism and bottom plate, wherein the connecting plate passes through slide rail mechanism slidable mounting on the bottom plate, and the one end of pendulum rod rotates with the connecting plate and links to each other, and its other end rotates with the fly leaf with the detection and links to each other.

Furthermore, two swing rods are arranged, and the two swing rods, the movable plate for detection and the connecting plate form a parallelogram mechanism together.

Furthermore, bearings are respectively arranged at two ends of the swing rod and are respectively and rotatably connected with the movable detection plate and the connecting plate through bearing pins.

Furthermore, the sliding rail mechanism comprises a second guide rail and a second sliding block, wherein the second guide rail is fixedly arranged on the bottom plate, and the second sliding block is fixedly connected with the connecting plate.

Furthermore, the bottom plate is fixedly arranged at the bottom of the track, a pressing plate and a pressing block are arranged on the bottom plate, and the bottom edges of the two sides of the track are respectively clamped between the pressing plate and the pressing block.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a prevent device of tire tread defect detection with fly leaf slope, including pendulum rod, connecting plate, slide rail mechanism and bottom plate, when setting up through the device can effectively prevent to adopt contact method detection wheel tread radial runout etc. tread defect, the fly leaf for the detection just presses or takes place the slope when leaving at the wheel to be favorable to guaranteeing the accuracy of testing result.

(2) The utility model discloses a prevent device that tread defect detecting used fly leaf slope, the pendulum rod be equipped with two, and the both ends of pendulum rod link to each other with fly leaf and connecting plate rotation through the bearing pin respectively with detecting, because pendulum rod, connecting plate and fly leaf constitute parallelogram mechanism jointly, consequently when the wheel presses on or leaves the fly leaf, the fly leaf can take place to push down the motion along with parallelogram mechanism, and parallelogram mechanism's height changes promptly, nevertheless can guarantee that the fly leaf is in the horizontality all the time.

(3) The utility model discloses a prevent device that tread defect detection used fly leaf slope, but the connecting plate passes through slide rail mechanism slidable mounting on the bottom plate, leads through the motion of slide rail mechanism to the connecting plate, makes the connecting plate carry out horizontal motion along slide rail mechanism to highly adjusting parallelogram mechanism is favorable to improving the device's structure and operating stability.

(4) The utility model discloses a prevent device of tire tread defect detection with fly leaf slope, bottom plate fixed mounting be equipped with clamp plate and briquetting in the track bottom on the bottom plate, orbital both sides base block respectively between clamp plate and briquetting to can effectively guarantee the fixed fastness of bottom plate, and then can further guarantee the device's stability.

Drawings

FIG. 1 is a schematic diagram of a contact method for detecting a tread defect of a wheel;

FIG. 2 is a schematic structural diagram of a wheel tread defect detecting device;

FIG. 3 is a schematic view of the installation structure of the device for preventing the inclination of the movable plate for detecting the tread defect of the wheel of the present invention;

fig. 4 is a schematic structural view of the device for preventing inclination of the movable plate for detecting the tread defect of the wheel of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a track; 2. a wheel; 3. a movable plate; 301. a pedal; 302. mounting a plate; 401. a first slider; 402. a first guide rail; 5. a spring; 6. a base plate; 701. a second guide rail; 702. a second slider; 703. a connecting plate; 704. a swing rod; 705. a bearing pin; 8. and (7) fixing the plate.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

Example 1

The contact measurement method is generally that a movable plate 3 is installed on the inner side of a track 1 (in the rolling process of a train, the top point of the rim of a wheel 2 is always in contact with the movable plate 3, namely, the movable plate 3 can follow up and down along with the rolling of the wheel), the downward pressing displacement of the movable plate 3 in the rolling process of the wheel is measured through a displacement sensor, and the measured data is processed to obtain the radial runout of the tread of the wheel 2. For example, in the range of the wheel tread circumference, if the pressing displacement amount of the movable plate 3 does not change, the wheel tread does not have run-out and tread scratches, but if the pressing displacement amount changes, it indicates that the wheel tread has run-out and tread scratches, and the run-out and scratch amounts are the pressing displacement amount change values of the movable plate 3.

As shown in fig. 2, the movable plate 3 of the wheel tread defect detecting device is connected to the fixed plate 8 through the slide rail mechanism and the spring 5, and the fixed plate 8 is fixedly installed relative to the rail 1 and is parallel to the movable plate and the rail 1. Specifically, a first sliding block 401 is installed on the movable plate 3, and a first guide rail 402 is correspondingly installed on the fixed plate 8, so that when the wheel presses on the movable plate, the movable plate moves downward along the sliding rail mechanism, thereby guiding the movement of the movable plate 3 through the sliding rail mechanism. When the train leaves, the movable plate gradually returns upwards to the initial position along the sliding rail mechanism under the action of the spring 5.

When a train just presses on or leaves the movable plate, the movable plate is easy to incline due to the existence of the structure of the slide rail mechanism and installation errors, and the measurement precision is also influenced although the inclination amount is small. Therefore, in order to effectively ensure the measurement accuracy, in this embodiment, a device for preventing the movable plate from tilting is added below the movable plate, as shown in fig. 3 and fig. 4, the device includes a swing link 704, a connecting plate 703, a sliding rail mechanism and a bottom plate 6, wherein the connecting plate 703 is slidably mounted on the bottom plate 6 through the sliding rail mechanism, one end of the swing link 704 is rotatably connected to the connecting plate 703, and the other end thereof is rotatably connected to the movable plate for detection. Specifically, two swing rods 704 are provided, bearings are respectively installed at two ends of each swing rod, the two swing rods are respectively rotatably connected with the movable detection plate and the connecting plate 703 through bearing pins 705, and the lengths of the two swing rods 704 and the distances between the bearings on the two swing rods 704 are the same, so that the swing rods 704, the movable detection plate and the connecting plate 703 jointly form a parallelogram mechanism. After the wheel presses the movable plate, the height of the parallelogram mechanism is wholly reduced, but the movable plate is always kept in a horizontal state, so that the movable plate can be effectively prevented from inclining, and the accuracy of a detection result is improved.

Example 2

The structure of the device for preventing the inclination of the movable plate for detecting the wheel tread defect of the embodiment is basically the same as that of the embodiment 1, and the main difference is that: specifically, in this embodiment, the sliding rail mechanism between the connecting plate 703 and the bottom plate includes a first slider 401 and a first guide rail 402, wherein the first guide rail 402 is fixedly installed on the bottom plate 6, and the first slider 401 is fixedly connected to the connecting plate 703, so that when the wheel presses up the movable plate, the swing link 704 moves down along with the movable plate, and further pushes the connecting plate 703 to move horizontally along the first guide rail.

Example 3

The structure of the device for preventing the inclination of the movable plate for detecting the wheel tread defect of the embodiment is basically the same as that of the embodiment 2, and the main difference is that: the bottom plate 6 of this embodiment is fixedly mounted at the bottom of the track 1, the bottom plate 6 is provided with the pressing plate 601 and the pressing block 602, the bottom edges of the two sides of the track 1 are respectively clamped between the pressing plate 601 and the pressing block 602, the pressing block 602 is provided with a threaded hole, and one end of the bolt penetrates through the threaded hole to be pressed on the side edge of the track, so that the bottom plate 6 is pressed and fixed at the bottom of the track. The movable plate of the present embodiment includes a pedal 301 and a mounting plate 302, and the pedal 301 is fixed to the mounting plate 302.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a prevent that wheel tread defect detects with device of fly leaf slope which characterized in that: the device comprises a swing rod (704), a connecting plate (703), a sliding rail mechanism and a bottom plate (6), wherein the connecting plate (703) is slidably mounted on the bottom plate (6) through the sliding rail mechanism, one end of the swing rod (704) is rotatably connected with the connecting plate (703), and the other end of the swing rod is rotatably connected with a movable plate for detection.

2. The device of claim 1, wherein the movable plate for preventing the tread defect detection from tilting comprises: two swing rods (704) are arranged, and the two swing rods, the movable plate for detection and the connecting plate (703) form a parallelogram mechanism together.

3. The device of claim 1, wherein the movable plate for preventing the tread defect detection from tilting comprises: and bearings are respectively arranged at two ends of the swing rod (704) and are respectively and rotatably connected with the movable plate for detection and the connecting plate (703) through bearing pins (705).

4. The device for preventing the inclination of the movable plate for detecting the tread defect according to any one of claims 1 to 3, wherein: the sliding rail mechanism comprises a second guide rail (701) and a second sliding block (702), wherein the second guide rail (701) is fixedly arranged on the bottom plate (6), and the second sliding block (702) is fixedly connected with the connecting plate (703).

5. The device of claim 4, wherein the movable plate for preventing the tread defect detection from tilting comprises: the base plate (6) is fixedly arranged at the bottom of the track (1), the pressing plate (601) and the pressing block (602) are arranged on the base plate (6), and the bottom edges of two sides of the track (1) are respectively clamped between the pressing plate (601) and the pressing block (602).