CN111284530A

CN111284530A - Self-cleaning self-lubricating chain transmission rail locomotive position detection device

Info

Publication number: CN111284530A
Application number: CN202010202231.6A
Authority: CN
Inventors: 饶生峰; 孔萌; 孔婷; 梁世文
Original assignee: Wuhan Daolintianxia Technology Co Ltd
Current assignee: Wuhan Daolintianxia Technology Co Ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-06-16

Abstract

The invention relates to a self-cleaning and self-lubricating chain transmission rail locomotive position detection device, which comprises a main chain wheel, a chain, an encoder, a transmission shaft, a bearing and a shell, wherein the main chain wheel is sleeved on the transmission shaft, one end of the transmission shaft is connected with the encoder, the transmission shaft is supported in the shell through the bearing, the shell is fixed on a rail locomotive, the chain is externally connected and fixed and is arranged along the length direction of a locomotive guide rail, and the chain is transmitted from the shell to the main chain wheel; the chain cleaning device further comprises a lubricating and cleaning assembly, wherein the lubricating and cleaning assembly comprises a cleaning part, a supporting part and an oil supply part, the cleaning part is made of flexible materials and is just contacted with the chain, and the supporting part is fixedly connected with the shell. The invention converts the actual running distance of the rail locomotive into the running distance of the position detection device on the chain through chain transmission, eliminates the influence of wheel slipping, idle running and other phenomena on the position detection of the rail locomotive, and the contained lubricating and cleaning component has the effects of lubricating, cleaning and preventing chain dropping on the chain transmission.

Description

Self-cleaning self-lubricating chain transmission rail locomotive position detection device

Technical Field

The invention relates to a self-cleaning and self-lubricating chain transmission rail locomotive position detection device, which is applied to the technical field of rail locomotives.

Background

In the conventional rail locomotive position detection, the position detection is mainly carried out in a mode of mounting a rotary encoder on a driving wheel or a driven wheel of the locomotive. The phenomena of skidding, idling and the like can be generated when wheels run on the rail, accumulated errors can be formed when the wheels run for a long time, the position detection of the rail locomotive is inaccurate, and even safety production accidents are caused.

In recent years, there have also been improvements to this problem by those skilled in the art. In order to eliminate the accumulated error caused by the slip, the idle running and the like, a calibration point is arranged at intervals in the running direction of the locomotive (the calibration point generally adopts a proximity switch and other devices). The more calibration points are required if the measurement accuracy is higher, whereas the less calibration points are required the lower the accuracy is. However, this method still has disadvantages: firstly, the more calibration points are added, the more fault points are added, the higher the fault probability is, and in the actual operation process, because the unreliable calibration points often cause correction errors; and secondly, even if the calibration points are added, the position data between the two calibration points still have inaccurate phenomenon, for example, when the locomotive idles or slips between the two calibration points, the position detected by the encoder is definitely deviated from the actual position of the locomotive, and the requirement cannot be met for some occasions needing accurate positioning.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a self-lubricating and self-cleaning chain transmission rail locomotive position detection device, which is used for accurately detecting the position and measuring the stroke of a rail locomotive by combining chain transmission with encoder measurement, and is additionally provided with a lubricating and cleaning component to ensure the lubricating, cleaning and chain dropping prevention effects of the chain transmission.

The invention provides the following technical scheme:

the self-cleaning self-lubricating chain transmission rail locomotive position detection device is characterized by further comprising a lubricating and cleaning assembly, wherein the lubricating and cleaning assembly comprises a cleaning part, a supporting part and an oil supply part, the cleaning part is made of flexible materials and is just contacted with the chain, and the supporting part is fixedly connected with the shell.

Preferably, the cleaning part is a brush or an oil-soaked sponge, and the supporting part is internally provided with an oil supply channel.

Preferably, two tension sprockets are mounted on both sides of the main sprocket, and form a chain transmission together with the main sprocket and the chain, and the cleaning part is just contacted with the chain at the meshing position of the tension sprockets and the chain.

Preferably, the chain, the main sprocket and the tension sprocket form an M-shaped or W-shaped interaction.

Preferably, the number of the main chain wheel and the number of the encoders are two, the two encoders measure simultaneously, and the measured data verify each other.

Preferably, the transmission shaft and the encoder are connected by a non-contact magnetic coupling.

Preferably, a protective casing is arranged outside the non-contact type magnetic coupling.

Preferably, the protective shell is provided with a viewing hole.

Compared with the prior art, the invention has the advantages that:

(1) the main body part (except the chain) of the invention is fixedly arranged on the rail car, and the chain is arranged along the length direction of the car guide rail. When the locomotive runs, the chain is meshed with the main chain wheel and drives the encoder, and even if the locomotive slips or idles, the encoder driven by the chain is not influenced, namely the actual running distance of the locomotive is the running distance of the main body part of the invention on the chain.

(2) The chain wheel lubricating device is provided with the lubricating and cleaning assembly, in the process of meshing transmission of the chain and the chain wheel, the oil supply part of the lubricating and cleaning assembly supplies lubricating oil, the lubricating oil flows through the cleaning part and can uniformly supply oil to a meshing position in real time, and the lubricating oil has lubricating and cleaning functions; the cleaning part is just contacted with the chain and has a cleaning effect on sundries on the chain.

(3) The cleaning part of the chain-pulling device is flexible, has a certain blocking effect on the chain, has a certain chain-pulling-off preventing effect, cannot generate rigid interference and abrasion, can prevent the chain from being pulled off greatly by the rigid supporting part far away from the chain, and is combined with the rigid supporting part, so that the chain transmission of the chain-pulling device has a better chain-pulling-off preventing effect.

(4) The magnetic coupling is a non-contact power transmission, has better effect on preventing the phenomenon of misalignment of two shafts compared with the traditional coupling connection, and can effectively avoid the vibration, abrasion and measurement errors of the device.

Drawings

FIG. 1 is an internal configuration diagram of the present invention (the upper cover plate 21 of the housing is omitted);

FIG. 2 is an external structural view of the present invention;

FIG. 3 is a schematic structural view of the lubricating cleaning assembly of the present invention;

FIG. 4 is an M-type interaction of the first embodiment of the present invention;

FIG. 5 is a W-type interaction of the first embodiment of the present invention;

FIG. 6 is an internal configuration diagram of a second embodiment of the present invention (the case upper cover plate 21 is omitted);

FIG. 7 is an external configuration diagram of a second embodiment of the present invention;

in the figure: 1-lubricating the cleaning assembly; 2-a housing; 3, a chain; 4-a tension sprocket; 5-a main sprocket; 6-a bearing; 7-a transmission shaft; 8-non-contact magnetic coupling; 9-an encoder; 10-a protective shell; 11-an oil supply part; 12-a support portion; 13-a cleaning section; 21-upper cover plate of the shell; 101-a viewing aperture; 102-a bolt; 103-a spacer; 104-a nut; 121-lubricating oil duct.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 1 and 6, the self-cleaning and self-lubricating chain transmission rail car position detection device comprises a main chain wheel 5, a chain 3, an encoder 9, a transmission shaft 7, a bearing 6 and a shell 2, wherein the main chain wheel 5 is sleeved on the transmission shaft 7, one end of the transmission shaft 7 is connected with the encoder 9, the transmission shaft 7 is supported in the shell 2 through the bearing 6, the shell 2 is fixed on the rail car, the chain 3 is arranged along the length direction of a car guide rail, and the chain transmission is formed by the shell 2 and the main chain wheel 5 in a penetrating mode. The lubricating and cleaning assembly 1 is further included, the lubricating and cleaning assembly 1 comprises a cleaning part 13, a supporting part 12 and an oil supply part 11, the cleaning part is made of flexible materials and is just contacted with the chain 3, and the supporting part 12 is fixedly connected with the shell 2.

Fig. 1 is an internal configuration diagram of a first embodiment of the present invention. The oil supply part 11 can be a small oil tank or other oil supply device and plays a role of supplying lubricating oil; the supporting part 12 is made of rigid material and is fixedly arranged at the upper part of the shell, and an oil supply channel 121 is arranged inside the supporting part; the cleaning part 13 is a lubricating oil brush, and other flexible materials such as oil-impregnated sponge can be used to contact with the chain 3 to clean the engaged chain 3, and the lubricating oil flows down through the oil supply channel 121 to clean and lubricate the chain.

Two tensioning chain wheels 4 are installed on two sides of the main chain wheel 5, and form chain transmission together with the main chain wheel 5 and the chain 3. The number of the lubricating and cleaning assemblies 1 is two, the lubricating and cleaning assemblies are respectively arranged above the chain 3 and the two tensioning chain wheels 4, and the lubricating and cleaning assemblies are just contacted with the chain 3 at the meshing position of the tensioning chain wheels 4 and the chain 3.

As shown in fig. 1, 4 and 5, when the present invention has one main sprocket 5 and two tension sprockets 4, the chain 3, the main sprocket 5 and the tension sprockets 4 form an M-shaped or W-shaped interaction.

Fig. 2 is a schematic diagram of an external structure of the first embodiment of the present invention. In the installation process, the condition that the transmission shaft 7 and the encoder 9 are not in the center is often generated, so that the transmission shaft 7 and the encoder 9 are connected through the non-contact magnetic coupling 8, and vibration, abrasion and measurement errors caused by the fact that two shafts are not in the center are avoided. And a protective shell 10 is arranged outside the non-contact magnetic coupling 8 to prevent impurities in the external environment from entering. The protective casing 10 is provided with a viewing hole 101. The protective shell 10 is fixedly connected with the shell 2 and the encoder 9 through bolts 102, gaskets 103 and nuts 104. The shape and size of the housing 2 and the protective casing 10 are adaptively designed according to the arrangement of the

sprockets

4, 5, the non-contact magnetic coupling 8 and the encoder 9.

As shown in fig. 6 and 7, the present invention provides a second embodiment, i.e. a scheme comprising two encoders 9. The number of the main chain wheel 5 and the number of the encoders 9 are two, the two encoders 9 measure simultaneously, and the measured data are verified mutually, so that the inaccuracy or the fault of the measured data of the single encoder 9 is avoided. Two tensioning chain wheels 4 are installed to two main chain wheel 5 both sides, chain 3 main chain wheel 5 with tensioning chain wheel 4 forms the mutual mode of M type or W type. The number of the lubricating and cleaning assemblies 1 is two, the lubricating and cleaning assemblies are respectively arranged above the chain 3 and the two tensioning chain wheels 4, and the lubricating and cleaning assemblies are just contacted with the chain 3 at the meshing position of the tensioning chain wheels 4 and the chain 3. The shape and size of the housing 2 and the protective casing 10 are adaptively designed according to the arrangement structure of the sprockets (4, 5), the non-contact magnetic coupling 8 and the encoder 9. The other structures are connected in the same manner as in the first embodiment.

The working principle is as follows: the housing 2 of the invention is fixed on a rail vehicle, and a chain 3 is arranged along the length direction of a vehicle guide rail and passes through the housing 2 to form a chain transmission with a main chain wheel 5. When the locomotive runs, the main body part (structures except the chain) of the device is driven to move relative to the guide rail, and even if the locomotive slips or idles, the chain can not be influenced to drive the encoder; the chain 3 which is arranged along the length direction of the guide rail and is externally connected and fixed is meshed with the main chain wheel 5 and the tension chain wheel 4 to cause the main chain wheel 5 to rotate, so that the encoder 9 is driven to rotate, and the electric signals converted by the encoder 9 are processed by data to obtain the actual stroke and position data of the rail locomotive.

In the process of meshing transmission of the chain and the chain wheel, the oil supply part 11 of the lubricating and cleaning assembly supplies lubricating oil, the lubricating oil flows through the supporting part 12 and the cleaning part 13 and can uniformly supply oil to a meshing position in real time, and the lubricating oil has lubricating and cleaning functions; the cleaning part 13 is just contacted with the chain 3 and has a cleaning function on sundries on the chain. The cleaning part 13 of the chain-dropping prevention device is flexible, has certain blocking effect on the chain 3, has certain chain-dropping prevention effect on the chain 3, cannot generate rigid interference and abrasion, and the rigid supporting part 12 far away from the chain can prevent the chain 3 from dropping greatly, so that the chain transmission device has better chain-dropping prevention effect by combining the two parts.

The non-contact magnetic coupling 8 is a non-contact power transmission, has better effect on preventing the phenomenon of misalignment of two shafts compared with the traditional coupling connection, and can effectively avoid vibration, abrasion and measurement errors caused by misalignment of the two shafts. And a protective shell 10 is arranged outside the magnetic coupling 8 to prevent impurities in the external environment from entering. An observation hole 101 is formed in the protective shell 10, so that the connection and operation conditions of the non-contact magnetic coupling 8 can be observed and monitored at any time.

The above-described embodiments are merely preferred embodiments of the present invention, and all equivalent designs based on the principles and ideas of the present invention should be covered by the technology of the present invention.

Claims

1. The self-cleaning self-lubricating chain transmission rail locomotive position detection device is characterized by further comprising a lubricating and cleaning assembly, wherein the lubricating and cleaning assembly comprises a cleaning part, a supporting part and an oil supply part, the cleaning part is made of flexible materials and is just contacted with the chain, and the supporting part is fixedly connected with the shell.

2. The self-cleaning self-lubricating chain driven rail car position detecting device as claimed in claim 1, wherein the cleaning portion is a brush or an oil-soaked sponge, and the supporting portion is provided with an oil supply passage therein.

3. The self-cleaning self-lubricating chain-driven rail car position detecting device as claimed in claim 1, wherein two tension sprockets are installed at both sides of the main sprocket, and form a chain drive together with the main sprocket and the chain, and the cleaning portion just contacts with the chain at the meshing position of the tension sprockets and the chain.

4. The self-cleaning, self-lubricating, chain driven railcar position sensing device according to claim 3, wherein said chain, said main sprocket and said tension sprocket form an M-type interaction or a W-type interaction.

5. The self-cleaning self-lubricating chain driven rail car position sensing device as claimed in any one of claims 1 or 3, wherein the number of said main sprocket and said encoder is two, two encoders measure simultaneously, and the measured data mutually verify.

6. The self-cleaning, self-lubricating, chain driven railcar position sensing device according to claim 1, wherein said drive shaft and said encoder are connected by a non-contact magnetic coupling.

7. The self-cleaning, self-lubricating, chain driven railcar position sensing device according to claim 6, wherein said magnetic coupling is externally provided with a protective housing.

8. The self-cleaning, self-lubricating, chain driven railcar position sensing device according to claim 7, wherein said guard housing is formed with a sight opening.