CN115586344A - Axle box structure compatible with two speed sensors - Google Patents

Abstract

The invention discloses an axle box structure compatible with two speed sensors, and relates to the technical field of locomotive axle box structures. It is fixedly connected with the bearing cap through bolts, and jointly forms a bearing installation cavity, in which an axle and a bearing are installed, and the bearing is sleeved on the axle, and the speed measuring gear is installed on the end of the axle through fastening bolts, and A shift fork lever interface is arranged on the disc of the speed measuring gear, a Hall sensor is installed in the radial direction of the speed measuring gear, and/or a shift fork speed sensor is arranged axially of the speed measuring gear. The invention has installation interfaces of two kinds of speed sensors, can be compatible with two kinds of speed sensors, and provides more sensor options for locomotive users.

Description

An Axlebox Structure Compatible with Two Speed Sensors

technical field

The invention relates to the technical field of locomotive axle box structures, in particular to an axle box structure compatible with two speed sensors.

Background technique

The locomotive bogie wheel-to-axle box system is a very important system component of the bogie. It bears all the weight of the locomotive, enables the locomotive to run along the track at high speed, and bears various other loads transmitted from the car body and rails. Static and movement exert force, and the force is very complicated. The wheel-to-axlebox system is composed of the wheelset and the axlebox device. The axlebox device is responsible for collecting and transmitting the operation data of the bogie. Therefore, the wheel-to-axlebox system is one of the key components that affect the safety of locomotive operation.

In the past, the sensor used for speed measurement in the axle box was a contact speed sensor, and the speed data was transmitted to the speed measurement device through the "square hole" or "fork lever" set on the bearing gland. The sensor type is single, and the contact speed sensor is easy to wear , and the connection device is prone to "breakage" and "flying", frequent installation and maintenance, and high cost.

Therefore, it is urgent to provide an axle box structure compatible with two speed sensors to overcome the above difficulties.

Contents of the invention

The purpose of the present invention is to: propose an axle box structure compatible with two speed sensors, add a test gear at the end of the axle, and set a shift fork lever on the test gear, and a Hall sensor and a shift fork speed sensor can be installed. It is compatible with various speed measuring sensors, so as to solve the problem of using a contact speed sensor to measure vehicle speed in the background technology.

The technical scheme that the present invention adopts is as follows:

The present invention is an axle box structure compatible with two kinds of speed sensors, including a bearing seat and a bearing cover, grooves are processed in the bearing seat and the bearing cover, the bearing seat and the bearing cover are fixedly connected by bolts, and together form a Bearing installation chamber, the shaft and bearings are installed in the bearing installation chamber, the bearing is sleeved on the axle, the speed measuring gear is installed on the end of the axle through fastening bolts, and a shift fork is arranged on the wheel disc of the speed measuring gear Rod interface, the speed measuring gear is radially matched to install the hall sensor, and/or the speed measuring gear is axially provided with a shift fork speed sensor.

Further, the first installation interface is processed on the bearing seat, the shift fork speed sensor is fixedly installed on the first installation interface by bolts, the shift fork rod interface of the speed measuring gear is installed with a shift fork rod, and the shift fork The speed sensor is facing the wheel disc of the speed measuring gear, and is connected with the shift fork rod to measure the speed.

Further, the bearing cap is processed with a second installation interface, the Hall sensor is fixed on the second installation interface by bolts, and the Hall sensor is measuring the speed of the rack of the speed measuring gear.

Further, a bearing gland is also arranged between the axle and the speed measuring gear, and through holes are processed on the bearing gland and the speed measuring gear, and screw holes are processed at the end of the axle, and the bearing gland and the speed measuring gear pass through Fastening bolts are fixed at the end of the axle, and the edge of the bearing cover abuts against the bearing for fixing the axial position of the bearing on the axle.

Further, a plurality of through holes are distributed along the circumference of the speed measuring gear, and the through holes on the bearing gland match with the through holes on the speed measuring gear.

Further, the number of fastening bolts matches the number of through holes, small holes are drilled on the bolt heads of the fastening bolts, steel wires are inserted into the small holes, and multiple fastening bolts are connected through the steel wires.

Further, the bolt head of the fastening bolt is a hexagon socket.

In summary, owing to adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

The present invention is an axle box structure compatible with two speed sensors, has installation interfaces of two speed sensors, can be compatible with two speed sensors, provides locomotive users with more sensor options, and adopts non-contact speed sensor When installing the sensor, it can avoid contact between the speed sensor and the rotating parts such as the axle, reduce wear and tear, avoid "breaking" and "flying" of the connecting device, reduce maintenance times, and save the cost of replacing the speed sensor.

The present invention is an axle box structure compatible with two kinds of speed sensors. The speed measuring gear is fixedly installed at the end of the axle by fastening bolts, and small holes are drilled on the bolt heads of the fastening bolts, and steel wires are inserted into the small holes to pass through The steel wire connects and fixes multiple fastening bolts to prevent loosening, and reinforces the connection between the speed measuring gear and the axle.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is the front view of the present invention;

Fig. 2 is a sectional view of the present invention from a left viewing angle;

Fig. 3 is the sectional view of the present invention's top view angle;

Fig. 4 is the connection structure schematic diagram of axle shaft and speed measuring gear among the present invention;

Fig. 5 is a perspective view of the present invention.

Explanation of reference numerals: 1-bearing, 2-axle, 3-bearing seat, 301-first installation interface, 4-bearing cover, 401-second installation interface, 5-bearing installation cavity, 6-fastening bolt, 601 -steel wire, 7-speed measuring gear, 701-through hole, 8-Hall sensor, 9-fork lever interface, 901-fork lever, 10-fork speed sensor, 11-bearing gland.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

It should be noted that the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes none other elements specifically listed, or also include elements inherent in such a process, method, article, or apparatus.

It should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

The characteristics and performance of the present invention will be further described in detail below in conjunction with the examples.

Embodiment one

As shown in Figures 1-5, an axle box structure compatible with two speed sensors includes a bearing seat 3 and a bearing cover 4, grooves are processed in the bearing seat 3 and the bearing cover 4, the bearing seat 3 and the bearing cover 4 The bearing cover 4 is fixedly connected by bolts, and jointly forms a bearing installation cavity 5, the axle 2 and the bearing 1 are installed in the bearing installation cavity 5, the bearing 1 is sleeved on the axle 2, and the end of the axle 2 is fastened The bolt 6 is equipped with a speed measuring gear 7, and the wheel disc of the speed measuring gear 7 is provided with a fork lever interface 9, the radial direction of the speed measuring gear 7 is matched with the Hall sensor 8, and/or the axial setting of the speed measuring gear 7 Fork speed sensor 10.

In the present invention, as shown in Figure 2, the axle box is a split axle box, the upper and lower parts are connected by bolts, the upper part is called bearing seat 3, the lower part is called bearing cover 4, the bearing of the axle box 1 is installed on the axle 2 through interference; the bearing seat 3 and the bearing cover 4 form a bearing installation cavity through the processed groove 5 is fixed on the bearing 1, and the bearing seat 3 and the bearing cover 4 are connected by bolts; the invented axle box structure Without front cover and rear cover, the structure is simple.

Preferably, as shown in Fig. 2 and Fig. 4, the bearing cap 4 is processed with a second installation interface 401, the Hall sensor 8 is fixed on the second installation interface 401 by bolts, and the Hall sensor 8 is Speed measurement is carried out to the rack of speed measurement gear 7.

The present invention has newly added speed measuring gear 7, and the speed measuring gear modulus of the present embodiment is 2.5, and number of teeth is 72, and speed measuring gear 7 is connected on the axle shaft 2 by fastening bolt 6, and speed measuring gear 7 is used for Hall sensor 8 speed measuring, and The Hall sensor 8 is installed on the bearing cover 4 through the second installation interface 401, and the Hall sensor 8 is located radially below the speed measuring gear 7, facing the rotating rack of the speed measuring gear 7, and the rotation of the axle 2 drives the speed measuring gear 7 to rotate. The Hall sensor 10 utilizes the principle of the Hall space magnetic effect, so that there is no direct mechanical connection between the moving parts of the axle 2 and the sensor, which effectively overcomes the shortcomings of other sensors in this respect.

Present embodiment can adopt the Hall sensor 8 of NTQG19 type, and NTQG19 type Hall speed sensor (hereinafter referred to as sensor) is used for train control system, traction system and braking system of EMU, harmonious high-power locomotive and subway vehicle, for its Provide multi-channel speed signals, the sensor is installed on the locomotive speed measuring gear box, output a square wave pulse signal proportional to the locomotive speed, and can output a stable speed signal under the condition of extremely low locomotive speed (0.1r/min). It can be used to detect the rotation speed, linear speed, acceleration and running direction of the vehicle, and it can also be used to measure the spindle speed of other vehicles or industrial machine tools that need to detect the rotation speed and have the required installation conditions.

Features:

(1) Non-contact detection speed, no wear, long product life;

(2) Imported permanent magnet materials are used inside, and the magnetic decay time is long;

(3) The speed measurement range is wide, and the signal output within the full speed range of 0 ~ 10kHz is stable and reliable;

(4) Excellent electromagnetic compatibility and strong anti-interference ability;

(5) Excellent weather resistance, vibration resistance and impact resistance, suitable for harsh working conditions.

Embodiment two

This embodiment is a further description of the present invention.

As shown in Figure 2-3, the first installation interface 301 is processed on the bearing seat 3, the shift fork speed sensor 10 is fixed on the first installation interface 301 by bolts, the shift fork of the speed measuring gear 7 A shift fork rod 901 is installed on the rod interface 9, and the shift fork speed sensor 10 faces the wheel disc of the speed measuring gear 7 and is connected with the shift fork rod 901 for speed measurement.

The difference between this embodiment and the first embodiment above is that a fork speed sensor 10 is installed in this embodiment, a fork lever interface 9 is arranged on the speed measuring gear 7, and a fork lever 901 is installed through the fork lever interface 9, and the fork The rod 901 is used for speed measurement by the shift fork speed sensor 10. In this embodiment, the DF16S4dac type shift fork speed sensor 10 is used. The first installation interface 301 for installing the shift fork speed sensor 10 is provided on the bearing seat 3; An installation interface 301 is installed with a shift fork speed sensor 10, the shift fork speed sensor 10 is located in the axial direction of the speed measuring gear 7, facing the speed measuring gear 7, the shift fork lever 901 is connected with the shift fork speed sensor 10, and the speed measuring gear 7 and the axle 2 rotate synchronously , The shift fork lever 901 rotates together with the speed measuring gear 7 to measure the speed, which belongs to the contact sensor.

Embodiment three

This embodiment is a further description of the present invention.

The difference of this embodiment from the above-mentioned first embodiment is that this embodiment installs two kinds of speed sensors, and the two kinds of speed sensors are respectively as described in the first and second embodiments.

Embodiment Four

This embodiment is a further description of the present invention.

As shown in Fig. 2 and Fig. 4, this embodiment is based on the above-mentioned embodiment. In a preferred embodiment of the present invention, a bearing gland 11 is also arranged between the axle 2 and the speed measuring gear 7, and the Both the bearing gland 11 and the speed measuring gear 7 are processed with a through hole 701, and the end of the axle 2 is processed with a screw hole. The bearing gland 11 and the speed measuring gear 7 are fixed on the end of the axle 2 by fastening bolts 6. The bearing The edge of the gland 11 abuts against the bearing 1 for fixing the axial position of the bearing 1 on the axle 2 .

In this embodiment, the speed measuring gear 7 and the bearing gland 11 are fixed by a common fastening bolt 6, and the fastening bolt 6 is inserted into the screw hole of the axle 2 to rotate and fix the speed measuring gear 7 and the bearing gland 11. The bearing gland 11 is used for Fix the inner ring of the bearing 1 to prevent the bearing 1 from moving on the axle and increase its stability.

Embodiment five

This embodiment is a further description of the present invention.

As shown in Figure 4, this embodiment is based on the above embodiments. In a preferred embodiment of the present invention, a plurality of through holes 701 are distributed along the circumference on the speed measuring gear 7, and on the bearing cover 11 The through hole 701 on the speed measuring gear 7 is matched with the through hole 701 on the speed measuring gear 7, and the bearing gland 11 and the speed measuring gear 7 are fixed on the end of the axle shaft 2 through the fastening bolt 6.

Preferably, the number of fastening bolts 6 matches the number of through holes 701, and the bolt heads of the fastening bolts 6 are drilled with small holes. Connect several fastening bolts 6 .

Preferably, the bolt head of the fastening bolt 6 is an inner hexagon.

In this embodiment, three fastening bolts 6 are provided, and the three hexagonal socket-type fastening bolts 6 are evenly distributed on the speed measuring gear 7. A small hole of φ4 is drilled on the head of the bolt, and a steel wire 601 is inserted into the small hole. , the three fastening bolts 6 are connected and fixed by the steel wire 601 to prevent loosening.

The present invention has two kinds of speed sensor installation interfaces, can be compatible with two kinds of speed sensors, and provides more sensor options for locomotive users, and, when using the Hall sensor 10, can avoid the contact between the sensor and the axle 2 and other rotating parts, reduce Wear and tear, avoid "breakage" and "flying" of the connecting device, reduce maintenance times, and save the cost of replacing sensors.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art within the technical scope disclosed in the present invention may not think of changes or changes through creative work. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope defined in the claims.

Claims (7)

1. An axle box structure of compatible two kinds of speed sensor, includes bearing frame (3) and bearing cap (4), its characterized in that: processing is fluted in bearing frame (3) and bearing cap (4), bearing frame (3) and bearing cap (4) pass through bolt fixed connection, enclose into bearing installation cavity (5) jointly, install axletree (2) and bearing (1) in bearing installation cavity (5), bearing (1) cover is established on axletree (2), the tip of axletree (2) is passed through fastening bolt (6) and is installed gear (7) that tests the speed to, be provided with fork lever interface (9) on the rim plate of gear (7) that tests the speed, radial matching installation hall sensor (8) of gear (7) that tests the speed, and/or the axial of gear (7) that tests the speed sets up shift fork speedtransmitter (10).

2. A two speed sensor compatible axlebox structure according to claim 1 wherein: processing has first installation interface (301) on bearing frame (3), shift fork speedtransmitter (10) pass through the bolt fastening and install on first installation interface (301), shift fork pole (901) are installed in declutch shift lever interface (9) of gear (7) tests the speed, shift fork speedtransmitter (10) just to testing the wheel disc of gear (7) to be connected with declutch shift lever (901) and test the speed.

3. A two speed sensor compatible axlebox structure according to claim 1 wherein: a second mounting interface (401) is processed on the bearing cover (4), the Hall sensor (8) is fixed on the second mounting interface (401) through a bolt, and the Hall sensor (8) is just opposite to a rack of the speed measuring gear (7) to measure the speed.

4. A two speed sensor compatible axlebox structure according to claim 1 wherein: still be provided with bearing cover (11) between axletree (2) and the gear (7) that tests the speed, bearing cover (11) and test the speed and all process on gear (7) have through-hole (701), and axletree (2) tip processing has the screw, bearing cover (11) are fixed at axletree (2) tip through fastening bolt (6) with the gear (7) that tests the speed, the edge butt bearing (1) of bearing cover (11) for fixing bearing (1) is at the axial position of axletree (2).

5. A two speed sensor compatible axlebox structure according to claim 4 wherein: the speed measuring gear (7) is provided with a plurality of through holes (701) along the circumference, the through holes (701) on the bearing gland (11) are matched with the through holes (701) on the speed measuring gear (7), and the bearing gland (11) and the speed measuring gear (7) are fixed at the end part of the axle (2) through fastening bolts (6).

6. A two speed sensor compatible axlebox structure according to claim 5 wherein: the number of the fastening bolts (6) is matched with that of the through holes (701), small holes are drilled in bolt heads of the fastening bolts (6), steel wires (601) penetrate into the small holes, and the fastening bolts (6) are connected through the steel wires (601).

7. A two speed sensor compatible axlebox structure according to claim 6 wherein: the bolt head of the fastening bolt (6) is of a hexagon socket type.

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