CN210762775U - Rail electric flat car - Google Patents

Abstract

The utility model relates to a rail electric flat car. The rail electric flat car comprises a vehicle body frame and a front drive axle. The front drive axle comprises a differential and a front wheel connected with the differential to drive the rail electric flat car. The moving half shaft, the differential is connected with the drive motor, the front drive axle is provided with a slewing support seat for carrying the middle part of the front end of the car body frame, a front slewing bearing is arranged between the slewing support seat and the car body frame, and the car body frame is provided with a front slewing bearing. There are two rear wheel seats, the two rear wheels of the electric flat car are rotatably assembled on the rear wheel seats, and between the two rear wheel seats and the car body frame, there is a rear rotation of the rotation axis along the vertical direction. The body frame is supported by three support points of front slewing bearing and two rear slewing bearings. When the car turns on the track and the car body frame is offset relative to the wheels and the track, the triangular support formed by the three support points is relatively stable, which greatly reduces the risk of overturning of the car body frame and enables the car to turn more smoothly .

Description

Rail electric flat car

technical field

The utility model relates to a rail electric flat car.

Background technique

At present, in the domestic ferromolybdenum smelting workshop, the ferromolybdenum smelting electric flat car and the circular track together form the transportation system of the smelting furnace. The technological process of smelting furnace charging, ferromolybdenum smelting, slag and iron tapping.

The Chinese utility model patent with the authorization announcement number of CN208393359U and the authorization announcement date of 2019.01.18 discloses a trolley line turning electric flat car that can adapt to the annular smelting production line. The electric flat car includes two sets of steering and rotation systems and one set of active Wheel differential deceleration system, the two driving wheels of the trolley are connected through a set of differential deceleration systems to form an active wheel bridge, and the two passive wheels of the trolley are connected through an axle to form a passive wheel bridge. A set of steering slewing systems, both sets of steering slewing systems are connected to the body frame through a turntable bearing, the inner ring of the turntable bearing is connected to the body frame, and the outer ring of the turntable bearing is connected to the steering slewing system.

Therefore, it can be known that there is a slewing bearing between the front two wheels of the trolley for supporting the body frame, and there is a slewing bearing for supporting the body frame between the rear two wheels of the trolley, that is, the trolley The body frame is supported by two front and rear turntable bearings. This type of support forms a two-point support in the front and rear directions. Therefore, when the trolley turns on the circular track and the body frame is offset relative to the wheels and the track, the two-point support is not stable, so it will lead to The body frame has a greater risk of overturning.

Utility model content

The purpose of the utility model is to provide a railed electric flat car that can move stably and is not prone to overturning, so as to solve the technical problem that the trolley is prone to overturning in the prior art.

In order to achieve the above purpose, the rail electric flat car of the present utility model adopts the following technical solutions:

A rail electric flat car, comprising:

body frame;

Also includes:

Front drive axle, the front drive axle includes a differential gear and a half shaft connected with the differential gear to drive the movement of the front wheels of the electric railcar;

The drive motor is connected to the differential transmission;

The slewing support seat, which is arranged on the front drive axle, is used to carry the middle part of the front end of the body frame;

The front slewing bearing is arranged between the slewing support seat and the vehicle body frame, and its rotation axis is along the vertical direction;

The rear wheel seat is arranged on the vehicle body frame, and there are two left and right, and the two rear wheels of the rail electric flat car are respectively rotated and assembled on the left and right rear wheel seats;

The rear slewing bearing is arranged between the rear wheel seat and the body frame, and the rotation axis is along the vertical direction;

The body frame is supported by three support points of the front slewing ring and two rear slewing rings.

The beneficial effect is: because the car body frame is supported by three support points of the front slewing bearing and the two rear slewing bearings, the three slewing bearings can form a triangle to the support points of the car body frame, so that when the car turns on the track, When the body frame is offset relative to the wheels and the track, the triangular support formed by the three support points is relatively stable, which greatly reduces the risk of overturning of the body frame and enables the car to turn more smoothly.

Further, the slewing support base is a turntable, and the inner ring of the front slewing support is fixed on the turntable.

The beneficial effect is that the outer ring of the front slewing bearing is fixed on the vehicle body frame, and the inner ring is fixed on the turntable, and the fixing structure is simple.

Further, the drive motor is hoisted on the turntable.

The beneficial effect is that the fixed installation of the driving motor is convenient.

Further, two front bearing seats are arranged on both axial sides of the front wheel, bearing bearings are arranged between the half shaft fixed to the front wheel and the two front bearing seats, and the two front bearing seats are fixed on the slewing support seat.

The beneficial effect is: when the car is turning, the axle bending moment between the two front wheels is distributed to the bearing seats on both sides of the front wheels, so that the force of the axle is balanced, no axial component force occurs, and the axle length is maintained. There is no change in time use, extending the life of the axle.

Further, two rear bearing seats are arranged on both axial sides of the rear wheel, and the two rear bearing seats are fixed on the rear wheel seat.

The beneficial effect is that the rear bearing seat can be rotated relative to the vehicle body frame together with the rear wheel and the rear wheel seat, so that the rear wheel of the electric flat car can be deflected according to the track.

Further, the differential is hoisted below the slewing support base, and the two output shafts of the differential are respectively connected with the two half shafts through couplings.

The beneficial effects are: the installation and fixation of the differential is convenient and convenient.

Further, the rear side of the rear wheel seat is provided with a rear guide device for guiding and matching with the track along the extending direction of the track, and the rear guide device includes a pair of rear guide wheels for rolling and matching with the vertical side of the track. The two rear guide wheels are used to set on opposite sides of the track.

The beneficial effect is: when the trolley is turning, the rear wheels can be stably rolled on the track.

Further, the slewing support base is provided with two front guide devices respectively located on the front sides of the two front wheels, and the front guide devices include front guide wheels for rolling fit with the vertical sides of the track; The guide wheel is used to be arranged on the left side of the corresponding track, and the front guide wheel of the other front guide device is used to be arranged on the right side of the corresponding track, so that the two tracks corresponding to the two front guide devices are located on the left side of the two front guide devices. Between the front guide wheels, or the front guide wheels of the two front guide devices are located between the two tracks corresponding to the two front guide devices.

The beneficial effects are as follows: when the trolley turns, the friction between the front wheel and the track is prevented from being laterally generated, and the stability of the trolley is improved when the trolley turns.

Further, the slewing support base is provided with two front guide devices respectively located on the front sides of the two front wheels. Two front guide wheels are used to set on opposite sides of the track.

The beneficial effect is that: when the trolley is turning, the front wheels can be stably rolled on the track.

Further, the two rear wheels are staggered in the front-rear direction.

The beneficial effect is: because the inner and outer wheel bases are different when turning, the two rear wheels are staggered in the front and rear directions, and the inner wheel base is smaller than the outer wheel base, which meets the position requirements of the four wheels of the trolley when turning, which is conducive to reducing the size of a single rear wheel. Twist the angle, thereby improving the stability of the car turning.

Description of drawings

Fig. 1 is the schematic diagram of the rail electric flat car in the turning state in the specific embodiment 1 of the present utility model;

Fig. 2 is the structural schematic diagram of the vehicle body frame in Fig. 1;

Fig. 3 is the structural schematic diagram of the electric railcar;

Fig. 4 is the sectional view of the front drive axle of the rail electric flat car in the specific embodiment 1 of the present utility model;

Fig. 5 is the assembly schematic diagram of the front bearing seat and the front wheel in Fig. 4;

6 is a schematic structural diagram of the front wheel and the front drive axle of the rail electric flat car in the specific embodiment 1 of the present utility model;

Fig. 7 is the top view of Fig. 6;

8 is a schematic structural diagram of a rear guide;

Fig. 9 is the structural representation of the front guide device;

Fig. 10 is the front view of Fig. 9;

FIG. 11 is a top view of the rail electric flat car in the specific embodiment 1 of the present invention.

In the picture: 1-car body frame, 2-ring track, 3-front drive axle, 4-front slewing ring, 5-drive motor, 6-front wheel, 7-front bearing seat, 8-rear wheel seat, 9- Rear wheel, 10-rear slewing ring, 11-front slewing ring mounting hole, 12-rear slewing ring mounting hole, 14-differential, 17-front axle bracket, 18-motor bracket, 191-left half shaft, 192- Right half shaft, 20-coupling, 21-transfer shaft tube, 22-turntable, 23-rear guide wheel, 24-rear guide wheel mounting frame, 25-front guide wheel, 26-front guide wheel mounting frame, 27 - Sweep track board.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

It should be noted that relational terms such as the terms "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The features and performances of the present invention will be further described in detail below with reference to the embodiments.

The specific embodiment 1 of the rail electric flat car of the present utility model:

As shown in Fig. 1 to Fig. 11 , the electric railcar includes a body frame 1, which is used to carry heavy objects, and the electric flat car also includes a front drive axle 3, and both ends of the front drive axle 3 are connected Two front wheels 6, the front drive axle 3 includes a differential 14 and a half shaft connected with the two differential output shafts of the differential, the two front wheels 6 are respectively fixed with the two half shafts, of which the left half shaft 191 and the differential output shaft are fixed by the coupling 20, the right half shaft 192 and the differential output shaft are fixed by the transfer shaft tube 21, and the right half shaft 192 and the transfer shaft tube 21 are fixed by the coupling 20. The transmission output shaft and the transfer shaft tube are also fixed by the coupling 20 . The differential 14 is drivingly connected with the drive motor 5 , and driven by the drive motor 5 , the differential 14 drives the two half shafts to rotate, thereby realizing the driving of the two front wheels 6 .

The middle of the front drive axle 3 is provided with a front axle bracket 17 , on which a slewing support seat for carrying the vehicle body frame 1 is fixedly installed, the slewing support seat is a turntable 22 , and the drive motor 5 is hoisted on the turntable 22 through the motor bracket 18 . Below, the differential 14 is also suspended below the turntable 22 through the front axle bracket 17 , and a bearing is installed between the front axle bracket 17 and the differential 14 . A front slewing bearing 4 whose rotation axis is in the vertical direction is disposed between the turntable 22 and the vehicle body frame 1 . A front slewing ring mounting hole 11 for mounting with the outer ring of the front slewing ring 4 is provided on the vehicle body frame 1 at a position corresponding to the front slewing ring 4 . Through the action of the front slewing bearing 4 , the vehicle body frame 1 can be rotationally offset relative to the front wheels 6 .

A front bearing seat 7 is installed on both axial sides of the two front wheels 6, and the two front bearing seats 7 are fixedly installed on the turntable 22, so that the front bearing seat 7 can occur together with the front drive axle 3, the front wheel and the turntable. Rotational offset relative to the body frame 1 . The half shaft fixed with the front wheel 6 passes through the front bearing seats 7 on both sides thereof, and a load bearing bearing is arranged between the half shaft and the front bearing seat 7 . The slewing support supports the vehicle body frame 1 under the combined action of the front bearing seat 7 and the front axle bracket 17 .

The front sides of the two front wheels are installed with a front guide device. The structure of the front guide device is shown in Figure 9. The front guide device is fixedly installed on the slewing support base. The front guide device includes a front guide wheel 25 and a front guide wheel. The front guide wheel mounting frame 26 installed on the 25 is on the right side of the corresponding track, the front guide wheel 25 of the front guide device on the left side is on the left side of the corresponding track, and the two tracks are between the front guide wheels 25 of the two front guide devices, so that when the trolley turns , which can avoid friction between the front wheel and the track, and improve the stability of the car in turning. A track sweeping plate 27 is fixedly installed on the front guide wheel mounting frame 26 to prevent debris on the track from causing the trolley to run unevenly or derail. Since the two front wheels are formed as a whole through the front drive axle, it is only necessary to set the front guide wheels that are rolled and matched with the corresponding guide rails on one side on the two front guide devices.

The vehicle body frame 1 is also provided with two rear wheel seats 8 , and the two rear wheels 9 of the electric flat car are rotatably assembled on the rear wheel seats 8 . The rear wheel base 8 and the vehicle body frame 1 are provided with a rear slewing bearing 10 whose rotation axis is along the vertical direction. 1 on. A rear slewing ring mounting hole 12 for mounting with the outer ring of the rear slewing ring 10 is provided on the vehicle body frame 1 at a position corresponding to the rear slewing ring 10 . Through the action of the rear slewing bearing 10 , the vehicle body frame 1 can be rotationally offset relative to the rear wheels 9 . In this embodiment, as shown in FIG. 11 , the two rear wheels 9 are staggered in the front-rear direction. If set in this way, because the inner and outer wheel tracks are different when turning, the two rear wheels are staggered in the front-rear direction, and the inner wheel track is different. It is smaller than the outer wheel base, which meets the position requirements of the four wheels of the trolley when turning, which is beneficial to reduce the torsion angle of a single rear wheel, thereby improving the stability of the trolley in turning.

Rear bearing seats are installed on both axial sides of the two rear wheels 9, and the two rear bearing seats are fixedly installed on the rear wheel seat 8, so that the rear bearing seats can occur together with the rear wheel and the rear wheel seat relative to the vehicle body. Rotational offset of frame 1. In order to improve the stability of the trolley when turning, a rear guide device is installed on the rear side of the two rear wheels. There are two left and right opposite rear guide wheels 23 and a rear guide wheel mounting bracket 24 for the two rear guide wheels 23 to be installed. The width of the track is the same. When the trolley moves forward on the circular track, the two rear guide wheels 23 of the rear guide device sandwich the two vertical sides of the track from the left and right sides, and move forward along the left and right vertical sides of the track. Rolling, the rear guide wheel 23 ensures that the rear wheel of the trolley is always stably rolling forward on the track. A track sweeping plate 27 is fixedly installed on the upper page of the rear guide wheel mounting frame 24 to prevent debris on the track from causing the trolley to run unevenly or derail. Since the rear wheels are provided with separate rear slewing bearings, and there is no connection between the two rear wheels, in order to ensure the stability of the rear wheels rolling on the track, it is necessary to set rear guide wheels on both sides of the guide rails corresponding to the rear wheels.

When the electric flat car moves on the circular track 2, the driving motor 5 drives the two front wheels 6 to roll on the track 2, the front wheel 6 acts as a driving wheel, and the rear wheel 9 acts as a driven wheel, so that the two rear wheels 9 also Roll on track 2. Under the action of the differential 14, the two front wheels 6 make the speed of the front inner wheel slow, the speed of the front outer wheel is fast, and the two rear wheels 9 are driven by the two front wheels 6, so that the rear inner wheel and the rear outer wheel are The speed of 2 also becomes slower and slower, so that both the two front wheels 6 and the two rear wheels 9 can move synchronously in accordance with the curved arc of the annular track 2 . At this time, since the movement of the front wheel 6 and the rear wheel 9 is deflected along with the bending of the annular track 3, the rotation deviation between the vehicle body frame 1 and the front wheel 6 and the rear wheel 9 is caused. The body frame 1 is supported by three supporting points, a front slewing bearing 4 and two rear slewing bearings 10, and the three supporting points just form a stable triangular support structure, so the support stability of the body frame 1 is greatly improved. This reduces the risk of overturning the body frame, allowing the car to turn more smoothly.

In other embodiments, the inner ring of the front slewing bearing may be fixed on the vehicle body frame, and the outer ring may be fixed on the turntable.

In other embodiments, the inner ring of the rear slewing bearing may be fixed on the vehicle body frame, and the outer ring may be fixed on the rear wheel seat.

In other embodiments, the two rear wheels are coaxially arranged in the left-right direction.

In other embodiments, the front drive axle may be provided with an axle housing, and in this case, the drive motor may be provided on the axle housing.

In other embodiments, the front bearing seat may be provided only on one axial side of the front wheel.

In other embodiments, the rear bearing seat may be provided only on one axial side of the rear wheel.

In other embodiments, the front guide wheel of the front guide on the right is on the left side of the corresponding track, the front guide wheel of the front guide on the left is on the right side of the corresponding track, and the two front guide wheels are on the two tracks. between. Or, each front guide device includes a pair of front guide wheels, and the pair of front guide wheels of each front guide device are respectively located on opposite sides of the corresponding rail.

In other embodiments, when the requirements for vehicle speed and stability are not high, the rear guide device or the front guide device may not be provided.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. The patent protection scope of the present utility model is subject to the claims. Equivalent structural changes should be included in the protection scope of the present invention.

Claims (10)

1. A rail electric flat car, comprising: body frame; It is characterized in that it also includes: Front drive axle, the front drive axle includes a differential gear and a half shaft connected with the differential gear to drive the movement of the front wheels of the electric railcar; The drive motor is connected to the differential transmission; The slewing support seat, which is arranged on the front drive axle, is used to carry the middle part of the front end of the body frame; The front slewing bearing is arranged between the slewing support seat and the vehicle body frame, and its rotation axis is along the vertical direction; The rear wheel seat is arranged on the vehicle body frame, and there are two left and right, and the two rear wheels of the rail electric flat car are respectively rotated and assembled on the left and right rear wheel seats; The rear slewing bearing is arranged between the rear wheel seat and the body frame, and the rotation axis is along the vertical direction; The body frame is supported by three support points of the front slewing ring and two rear slewing rings. 2 . The electric rail car according to claim 1 , wherein the slewing support base is a turntable, and the inner ring of the front slewing bearing is fixed on the turntable. 3 . 3 . The electric railcar according to claim 2 , wherein the drive motor is hoisted on the turntable. 4 . 4. The electric rail car according to claim 1, 2 or 3, characterized in that, two front bearing seats are arranged on both axial sides of the front wheel, a half shaft fixed to the front wheel and two front bearing seats There is a bearing bearing between, and the two front bearing seats are fixed on the slewing support seat. 5. The electric rail car according to claim 1, 2 or 3, characterized in that two rear bearing seats are arranged on both axial sides of the rear wheel, and the two rear bearing seats are fixed on the rear wheel seat. 6. The electric rail car according to claim 1, 2 or 3, characterized in that the differential is hoisted under the slewing support, and the two output shafts of the differential are coupled with the two half shafts respectively. device connection. 7. The electric railcar according to claim 1, 2 or 3, wherein the rear side of the rear wheel seat is provided with a rear guide device for guiding and cooperating with the track along the extending direction of the track, and the rear guide device It includes a pair of rear guide wheels for rolling fit with the vertical sides of the track, and the pair of two rear guide wheels are arranged on opposite sides of the track. 8. The electric rail car according to claim 1, 2 or 3, characterized in that, two front guide devices respectively located on the front sides of the two front wheels are provided on the slewing support base, and the front guide devices comprise The front guide wheel used for rolling fit with the vertical side of the track; the front guide wheel of one front guide device is used to be arranged on the left side of the corresponding track, and the front guide wheel of the other front guide device is used to be arranged on the right side of the corresponding track , so that the two tracks corresponding to the two front guides are located between the front guide wheels of the two front guides, or the front guide wheels of the two front guides are located between the two tracks corresponding to the two front guides. 9. The electric rail car according to claim 1, 2 or 3, characterized in that, the slewing support base is provided with two front guide devices respectively located on the front sides of the two front wheels, and the front guide devices comprise Pairs of front guide wheels are used for rolling fit with the vertical sides of the track, and two pairs of front guide wheels are arranged on opposite sides of the track. 10. The electric rail car according to claim 1, 2 or 3, characterized in that the two rear wheels are staggered in the front-rear direction.

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