CN216594156U - Low-floor gear box double-station running-in test device - Google Patents

Abstract

The utility model relates to the field of gearbox testing, and discloses a double-station running-in test device for a low-floor gearbox, which comprises a base, a first support frame, a second support frame and a third support frame, wherein the first support frame is arranged on the base, and the second support frame and the third support frame are symmetrically arranged on two sides of the first support frame; the test device also comprises a first Rzeppa coupling and a second Rzeppa coupling, the first Rzeppa coupling is correspondingly connected with a first rotating end of the first gear box and the double-shaft rotating device, and the second Rzeppa coupling is correspondingly connected with a second rotating end of the second gear box and the double-shaft rotating device. Through installing two gear box installation stations, the purpose of testing two gear boxes at one time is achieved, the ball cage type coupling is used for connecting the gear boxes with the rotating parts, and the rotating precision between the gear boxes and the rotating device is guaranteed.

Description

Low-floor gear box double-station running-in test device

Technical Field

The utility model relates to the field of gear box design, in particular to a low-floor gear box double-station running-in test device.

Background

Low-floor tram gear box weight is big, and the dismouting is difficult, if the gear box does not carry out quality testing to it after the completion of making, in case there is the gear box installation and the use of quality problem, just discover at this time that the gear box has quality problem and need the maintenance, tear artifical cost of maintenance such as fortune apart greatly increased. In order to avoid the problems, in the actual production process, the running-in test needs to be carried out after the assembly is completed, the running-in time is 2.5h, the existing running-in test equipment can only run in one gear box at a time, the efficiency is low, and the workshop capacity requirement cannot be met.

Second, during the experiment, need assemble the test bench to that the gear box is convenient, during the assembly, need guarantee that motor rotation center and gear box rotation center coincide, just can reduce the vibration. And the reliable connection can be ensured only by controlling the distance between the end surface of the motor and the end surface of the input shaft of the gear box.

The prior art document CN202021731495.2 discloses a splash lubrication gearbox testing device under multi-posture adjustable simple harmonic motion, which includes: the device comprises a first-stage bottom plate, a second-stage bottom plate, a three-phase motor, a torque sensor and a gear box, wherein the first-stage bottom plate is slidably mounted on a rack through a first sliding mechanism and is driven to do simple harmonic motion through a crank-link mechanism; the rotating shaft is installed on the first-stage bottom plate through the support, the second-stage bottom plate linked with the rotating shaft is fixed on the rotating shaft, the servo motor used for driving the rotating shaft to rotate is further installed on the first-stage bottom plate, the gear box, the torque sensor and the three-phase motor are installed on the second-stage bottom plate, and the gear box, the torque sensor and the three-phase motor are connected through the second coupler. In the prior art document, a running-in test is performed by directly driving a gear box to rotate by using a three-phase motor, and the prior art has the following defects:

the first disadvantage is that: only one gear box can be tested in running-in at one time, so that the efficiency is low;

the second disadvantage is that: the rotation center of the motor and the rotation center of the gear box cannot be ensured to be on the same horizontal line, namely, the rotation centers of the motor and the gear box are deviated, and especially for the gear box with larger volume and weight, the rotation deviation is more easily caused.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a low-floor gearbox double-station running-in test device.

The purpose of the utility model is realized by the following technical scheme:

the low-floor gearbox double-station running-in test device comprises a base, a first support frame, a second support frame and a third support frame, wherein the first support frame is installed on the base, and the second support frame and the third support frame are symmetrically arranged on two sides of the first support frame; the test device also comprises a first Rzeppa coupling and a second Rzeppa coupling, the first Rzeppa coupling is correspondingly connected with a first rotating end of the first gear box and the double-shaft rotating device, and the second Rzeppa coupling is correspondingly connected with a second rotating end of the second gear box and the double-shaft rotating device.

Furthermore, a mounting seat is arranged on the first support frame, and the double-shaft rotating device is mounted on the mounting seat.

Further, the double-shaft rotating device is fixedly connected with the mounting seat through bolts.

Furthermore, the first gear box and the second gear box are correspondingly connected with the second support frame and the third support frame through bolts.

Furthermore, the first gear box and the second gear box are correspondingly connected with the first Rzeppa coupling and the second Rzeppa coupling through flanges.

Further, the double-shaft rotating device is a double-shaft motor.

Furthermore, the double-shaft rotating device is a double-head transmission shaft, and the double-head transmission shaft is connected with a driving motor through a belt.

More closely, the diameter of a connecting shaft for connecting the double-head transmission shaft and the belt is smaller than the diameter of a rotating shaft for connecting the driving motor and the belt.

Further, the base is fixed with the ground through bolts.

Furthermore, reinforcing ribs are arranged between the first support frame, the second support frame, the third support frame and the base.

Compared with the prior art, the utility model has the following beneficial effects:

1) the two gear boxes can be subjected to running-in test at one time, so that the test speed is greatly improved;

2) a ball cage type coupling is arranged between the rotating shaft and the gear box, so that the rotating center of the rotating shaft and the rotating center of the gear box are ensured to be on the same horizontal line, and the connection between the rotating shaft and the gear box is ensured.

3) At present, the rotating speed of a conventional motor on the market can only reach about 2000r/min, the motor is utilized to drive the double-shaft rotating device to rotate through a belt, the rotating speed of the double-shaft rotating device can be improved as long as the diameter of a rotating shaft of the motor is larger than that of the double-shaft rotating device, so that the double-shaft rotating device is assembled to 3888r/min, and the test of a gear box in a limit rotating speed state is met.

Drawings

Fig. 1 is a schematic structural diagram of the low-floor gearbox double-station running-in test device.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application. 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 implicitly indicating 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. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example 1

As shown in fig. 1, a low-floor gearbox double-station running-in test device is provided, and the low-floor gearbox double-station running-in test device comprises a base 1, a first support frame 2 installed on the base 1, and a second support frame 3 and a third support frame 4 which are symmetrically arranged on two sides of the first support frame 2; the testing device further comprises a first Rzeppa coupler 8 and a second Rzeppa coupler 9, the first Rzeppa coupler 8 is correspondingly connected with a first rotating end of the first gear box 6 and the double-shaft rotating device 5, and the second Rzeppa coupler 9 is correspondingly connected with a second rotating end of the second gear box 7 and the double-shaft rotating device 5.

This device sets up a base 1 and sets up three support frame on the base, be used for installing biax rotating device 5 and two gear boxes of treating the running-in test respectively, during the equipment, preferentially fix the installation of biax rotating device 5 on first support frame 2, and correspond erection joint first rzeppa shaft coupling 8 and second rzeppa shaft coupling 9 at biax rotating device 5's both ends, correspond the installation with two gear boxes of awaiting measuring this moment and fix on second support frame 3 and third support frame 4, and the correspondence is connected gear box and rzeppa shaft coupling matching. At this time, as long as the double-shaft rotating device 5 starts to rotate, the gear box can be indirectly driven to rotate, so that the running-in test is completed.

This device utilizes the rzeppa to connect gear box and biax rotating device 5 indirectly, guarantees the synchronous revolution of both to utilize the characteristic of rzeppa, guarantee that gear box and biax rotating device 5's rotation center is unanimous.

For convenience of understanding, the technical explanation of the cage coupling is as follows:

the ball cage type coupling is connected with the driving shaft and the driven shaft respectively through the ball cage outer ring and the star inner ring, the centers of the force transmission steel balls are all located in a plane passing through the center of the coupling and are arranged in a roller path formed by grooves of the outer spherical surfaces of the spherical outer ring and the star inner ring, the centers of the two spherical surfaces are superposed with the center of the universal coupling, and in order to ensure that the centers of all the steel balls are located on a bisection plane of an included angle between two shaft axes, the steel balls are arranged in the ball cage, so that when the included angle between the driving shaft and the driven shaft of the coupling is changed, a force transmission point can be always located on the bisection line of the included angle, and therefore, the transmission speed between the driving shaft and the driven shaft of the ball cage type coupling can be kept synchronous.

The universal coupling is composed of force-transferring arm pair and receiving disk, and the receiving disk has two pieces, and on the disk surface several grooves or slots are cut for connecting the force-transferring arm pair and bearing components, and between two receiving disks more than three identical force-transferring arm pairs are used for connection, and uniformly distributed on the same radius of receiving disk. Each transmission arm pair is telescopic and is adjusted and positioned by a limiting part. The force transmission arm pair comprises a ball arm and a force transmission arm, the force transmission arm is installed in a hole or a groove of one flange through a bolt, and the ball arm is installed in a hole or a groove of the other flange. The ball arm and the force transmission arm are connected through a ball head and a mortar seat. The mortar seat is externally provided with a mortar-shaped gland for positioning.

The characteristics of the rzeppa coupling:

the transmission mode can adopt sliding transmission or rolling transmission. When sliding transmission is adopted, a polymer buffer sleeve is arranged on the ball arm and the transmission arm for buffering and vibration reduction. When the rolling transmission is adopted, the original buffer sleeve is refitted into the rolling piece on the ball arm and the transmission arm, and meanwhile, the original buffer sleeve is also changed into the rolling piece between the ball head and the mortar seat so as to adapt to the requirement of rigid transmission.

Compared with a cross axle type universal coupling, the spherical hinge plunger type universal coupling has the following characteristics:

(1) the damping lubricating oil has buffering and damping performances, can reduce noise and is automatically circulated and lubricated;

(2) under the condition of the same rotation diameter and inclination angle, the bearing capacity can be improved by 0.5-1 time;

(3) the synchronism is good, and even if the single-ball hinged plunger type universal coupling can ensure the synchronism;

(4) the initial compensation amount of the axial direction x and the radial direction y is large, and particularly the axial direction x can be realized without an external spline;

(5) the structure is novel, the weight is light, the manufacturability is good, the batch production is easy, and the cost is reduced;

(6) the device has the advantages of reliable work, convenient assembly and disassembly, convenient maintenance and long service life, is not only a universal component for low-speed heavy load and conventional rotating speed working condition shafting transmission, but also can be used for high-speed transmission. The universal coupling has wide application range, and is particularly suitable for shafting transmission under the working conditions of large inclination angle and limited radial size.

In this embodiment, the double-shaft rotating device is fixedly connected with the mounting seat through a bolt. Both are generally fixed by a plurality of hexagon bolts. For easy to assemble and fixed biax rotating device 5, can set up a mount pad 10 that supplies the installation of fixed biax rotating device 5 on first support 2, mount pad 10 includes two erection columns of two settings on first support frame 2, and there is semi-circular recess at the top of two erection columns, biax rotating device 5 installs in the semi-circular recess with two erection columns. In order to prevent the double-shaft rotating device 5 from running out of the groove in the motion state, a semicircular buckle can be further arranged on the mounting column, and the double-shaft rotating device is clamped in the semicircular groove by the circular buckle.

In this embodiment, when the human body carries the gear box to be tested to the corresponding position of second support frame 3 and third support frame 4, only need to press close the support frame of its installation with the gear box to fix the gear box on the support frame through the bolt, can guarantee stable connection between them. The second support frame 3 and the third support frame 4 are provided with windows at the installation positions of the gear box, so that the rotating shaft connecting end of the gear box passes through the support frames to be in contact with the Rzeppa, and is fixedly connected with a flange on the Rzeppa.

In the present embodiment, the biaxial rotation device 5 may directly employ a biaxial motor.

In this embodiment, through setting up two gear box mount pads to utilize two rzeppa couplings to correspond two gear boxes and be connected to biax rotating device 5, guarantee that pivot rotation center and gear box rotation center are on same water flat line, guarantee the hookup of pivot and gear box, thereby realize both rotatory synchronization, not off normal.

The embodiment II provides a low-floor gearbox double-station running-in test device which comprises a base 1, a first support frame 2, a second support frame 3 and a third support frame 4, wherein the first support frame 2 is installed on the base 1, and the second support frame 3 and the third support frame 4 are symmetrically arranged on two sides of the first support frame 2; the testing device further comprises a first Rzeppa coupler 8 and a second Rzeppa coupler 9, the first Rzeppa coupler 8 is correspondingly connected with a first rotating end of the first gear box 6 and the double-shaft rotating device 5, and the second Rzeppa coupler 9 is correspondingly connected with a second rotating end of the second gear box 7 and the double-shaft rotating device 5. The difference between the second embodiment and the first embodiment is that: the double-shaft rotating device 5 directly adopts a double-head transmission shaft, and the double-head transmission shaft is connected with a driving motor through a belt. The double-end transmission shaft is driven to move by a driving motor through a belt.

To the technical staff in this field, when the motor axis of rotation utilizes connecting bands such as belt to drive the axis of rotation and removes, under the state of guaranteeing that the belt does not sideslip, the conveying distance of motor axis of rotation must be unanimous with the turning distance of axis of rotation, as long as guarantee that the diameter of motor axis of rotation is greater than the diameter of axis of rotation, so when the motor rotates the round, the actual number of turns of axis of rotation must be greater than the round.

The rotating speed of the motor on the market is about 2000r/min generally at present, and the gear box limit test needs to be completed under the rotating speed of 3888r/min, the conventional motor on the market at present can not meet the rotating speed requirement at all, in this embodiment, utilize the motor to pass through the belt and rotate with the axis of rotation, and the axis of rotation is connected with the gear box through the rzeppa coupling, the rotational speed of axis of rotation is unanimous with the gear box, as long as select some axis of rotation that bearing diameter is less than motor connection bearing diameter can provide the actual rotational speed of axis of rotation, thereby realized the gear box at the running-in test of limit speed.

Because the gear box can produce the vibration under high-speed rotation state, for make the base stable not slope, can be provided with on the base and be connected the bolt of fixing with ground or other holding surface, generally can adopt more common expansion bolts to fix the base completely, avoid the gear box to lead to whole device vibration off-position in the test process.

In order to ensure that the whole structure is more fixed and prevent the second support frame 3 and the third support frame 4 from violently shaking in the movement process of the gear box, a reinforcing rib can be arranged between the second support frame 3 and the base so as to further stabilize the fixed relation between the second support frame 3 and the base; similarly, a reinforcing rib is also arranged between the third support frame 4 and the base.

It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The double-station running-in test device for the low-floor gearbox is characterized by comprising a base, a first support frame, a second support frame and a third support frame, wherein the first support frame is installed on the base, and the second support frame and the third support frame are symmetrically arranged on two sides of the first support frame; the testing device comprises a first support frame, a second support frame, a third support frame, a double-shaft rotating device, a second gear box, a first Rzeppa coupling, a second Rzeppa coupling, a first rotating end and a second rotating end, wherein the first double-shaft rotating device is connected to the second support frame, the third gear box is connected to the third support frame, the testing device further comprises the first Rzeppa coupling and the second Rzeppa coupling, the first Rzeppa coupling is correspondingly connected to the first rotating end of the first gear box and the double-shaft rotating device, and the second Rzeppa coupling is correspondingly connected to the second rotating end of the second gear box and the double-shaft rotating device.

2. The low-floor gearbox double-station running-in test device according to claim 1, wherein a mounting seat is arranged on the first support frame, and the double-shaft rotating device is mounted on the mounting seat.

3. The low-floor gearbox double-station running-in test device according to claim 2, characterized in that the double-shaft rotating device is fixedly connected with the mounting base through bolts.

4. The low-floor gearbox double-station running-in test device as claimed in claim 1, wherein the first gearbox and the second gearbox are correspondingly connected with the second support frame and the third support frame through bolts.

5. The low-floor gearbox double-station running-in test device according to claim 1, wherein the first gearbox and the second gearbox are correspondingly connected with the first Rzeppa coupling and the second Rzeppa coupling through flanges.

6. The low floor gearbox double station running-in test apparatus of claim 1, wherein the dual shaft rotating apparatus is a dual shaft motor.

7. The low-floor gearbox double-station running-in test device according to claim 1, wherein the double-shaft rotating device is a double-head transmission shaft, and the double-head transmission shaft is connected with a driving motor through a belt.

8. The low-floor gearbox double-station running-in test device according to claim 7, wherein the diameter of a connecting shaft connecting the double-head transmission shaft and the belt is smaller than the diameter of a rotating shaft connecting the driving motor and the belt.

9. The low-floor gearbox double-station running-in test device of claim 1, wherein the base is bolted to the ground.

10. The low-floor gearbox double-station running-in test device according to claim 1, wherein reinforcing ribs are arranged between the first support frame, the second support frame, the third support frame and the base.

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