CN114894506B - Combined loading test bed for self-propelled metallurgical vehicle driving device and working method thereof - Google Patents

Abstract

The invention provides a self-propelled metallurgical vehicle driving device combined loading test bed and a working method thereof, wherein the self-propelled metallurgical vehicle driving device combined loading test bed comprises a main test driving device, a accompanying test driving device, an axle supporting device, an axle weight loading device, a torque loading device and a torque balancing device; the axle supporting device comprises a first axle supporting device for supporting and fixing the main test driving device and a second axle supporting device for supporting and fixing the accompanying test driving device; the two sides of the main test driving device are respectively connected with a first loading bearing and a second loading bearing, and the axle load loading device is used for applying different tensile forces to the first loading bearing and the second loading bearing; the main test driving device is connected with the accompanying test driving device, and the torque loading device is used for applying torque to the main test driving device and the accompanying test driving device; the torque balancing device is used for balancing the torque of the main test driving device and the accompanying test driving device. The invention can load axle weight of more than 40 tons and simultaneously load torque, thereby realizing dynamic simulation of axle weight and torque.

Description

Combined loading test bed for self-propelled metallurgical vehicle driving device and working method thereof

Technical Field

The invention relates to a self-propelled metallurgical vehicle driving device combined loading test bed and a working method thereof.

Background

The self-propelled metallurgical vehicle is novel core equipment in a metallurgical transportation link, has the advantages of environmental protection and efficiency improvement, and has the characteristics of large shaft and large impact as large metallurgical transportation equipment, and the shaft weight of the self-propelled metallurgical vehicle is generally more than 40 tons and far exceeds that of a common rail locomotive by 30 tons. The running impact of the vehicle is extremely unstable, the uncertain factors are more, the axle weight change is larger, higher requirements are put forward on the performance, the quality and the stability of the driving device, and the reliability of the driving device has an important influence on the safe and reliable running of the metallurgical vehicle. Therefore, in order to ensure the quality of the driving device, it is necessary to perform a loading test simulating a condition exceeding the axle weight of 40 tons.

The serious deflection of the driving axle caused by the heavy axle is the most serious problem faced by the metallurgical vehicle driving device, and the test of simulating different axle weight loads on two sides of the wheel and simultaneously loading driving torque is necessary to be carried out. In the prior art, no-load or independent torque loading running and test can only be carried out on the driving device, the simulation of axle load loading on the driving device cannot be realized, and the severe working condition of the metallurgical vehicle during operation cannot be simulated.

In the test, the supporting action point and the loading action point are required to be identical to the positions of the wheels and the bearing box, the action form is identical to that of an actual vehicle, and the stress action point and the stress condition of the driving axle of the metallurgical vehicle can be better simulated. The prior art can only run the wheel in the air or run the wheel in a matched mode, and can not apply the axle load and simulate the supporting condition of the wheel pair driving device.

At present, the verification can only be carried out in no-load test before the driving device leaves the factory, after the sample vehicle is delivered to a user, the thermal load test operation is carried out on the site of the user, the requirement on the test site is high, the track line of the site is single, the normal production operation of other vehicles is influenced, and the problems of vehicle charging, maintenance and the like are caused, so that long-time continuous test is difficult to ensure. Meanwhile, the test is too long, once problems occur in the test, serious losses can be caused to the metallurgical vehicle, and the problems such as molten iron vehicles and the like can have serious influence on production safety. And the problems on site are difficult to solve rapidly, the disassembly and inspection work after the test is difficult to organize, and the time, manpower and material resource costs of manufacturers and users are wasted greatly.

In order to solve the above problems, it is needed to develop a test bench capable of simultaneously loading the driving device with an axle weight and a torque exceeding 40 tons and simulating the actual working condition of the driving device of the self-propelled metallurgical vehicle.

Disclosure of Invention

According to the proposed current verification, no-load test can only be carried out before the driving device leaves the factory, after a sample vehicle is delivered to a user, thermal load test operation is carried out on the site of the user, the requirement on a test site is high, the track line of the site is single, the normal production operation of other vehicles is influenced, and the problems of vehicle charging, maintenance and the like are caused, so that long-time continuous test is difficult to ensure; meanwhile, the test is too long in time, once problems occur in the test, serious losses can be caused to the metallurgical vehicle, and the problems such as molten iron vehicles and the like can have serious influence on production safety; the problems on site are difficult to solve rapidly, the disassembly and inspection work after the test is difficult to organize, and the technical problems of great waste of time, labor and material resource costs of manufacturers and users are caused, so that the self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof are provided. The invention mainly utilizes the axle supporting device, the axle load loading device, the torque balancing device and the like, so that the axle load and the torque can be loaded on the driving device at the same time, the axle load exceeds 40 tons, different axle loads can be adjusted at two sides, the actual working condition of the driving device of the self-propelled metallurgical vehicle can be simulated, the items of temperature, vibration, lubrication, sealing, clearance amount, gear engagement and the like are checked, the reliability and the safety of the self-propelled metallurgical vehicle are improved, and the loading test cost is reduced.

The invention adopts the following technical means:

a self-propelled metallurgical vehicle drive unit combination loading test stand comprising: the test device comprises a main test driving device, a test accompanying driving device, an axle supporting device, an axle weight loading device, a torque loading device and a torque balancing device, wherein the axle supporting device, the axle weight loading device, the torque loading device and the torque balancing device are arranged on a test platform; the test platform is of a T-shaped groove ground connection structure;

the axle supporting device is used for supporting the main test driving device and the accompanying test driving device;

the two sides of the main test driving device are respectively connected with a first loading bearing and a second loading bearing, and the axle load loading device is connected with the first loading bearing and the second loading bearing and is used for applying different tensile forces to the first loading bearing and the second loading bearing;

the main test driving device is connected with the accompanying test driving device, and the torque loading device is connected with the main test driving device and the accompanying test driving device and is used for applying torque to the main test driving device and the accompanying test driving device;

the torque balancing device is respectively connected with the main test driving device and the accompanying test driving device and is used for balancing the torque of the main test driving device and the accompanying test driving device.

Further, the axle supporting device comprises a first supporting bracket, a second supporting bracket, a first loading bracket, a second loading bracket, a first supporting bearing, a second supporting bearing and a supporting bearing seat;

the two sides of the main test driving device are respectively provided with a first supporting bearing, the first supporting bearings are respectively sleeved at two ends of a driving axle of the main test driving device and are respectively arranged in supporting bearing seats on a first loading support and a second loading support, the two supporting bearing seats are respectively fixed on the first loading support and the second loading support, and the first loading support and the second loading support are both fixed on T-shaped grooves of the test platform;

the test accompanying driving device comprises a test accompanying driving device, a test accompanying driving device and a test accompanying driving device, wherein a first support bearing and a second support bearing are respectively arranged on two sides of the test accompanying driving device, the first support bearing and the second support bearing are respectively sleeved at two ends of a driving axle of the test accompanying driving device and are respectively arranged in support bearing seats on the first support and the second support, the two support bearing seats are respectively fixed on the first support and the second support, and the first support and the second support are respectively fixed on T-shaped grooves of a test platform.

Further, the axle load loading device comprises two loading bearing seats, a guide seat, a loading pull rod assembly and a stretcher;

the two sides of the main test driving device are respectively provided with a first loading bearing and a second loading bearing, the first loading bearing is sleeved on a driving axle on one side of the main test driving device, the second loading bearing is sleeved on a first connecting shaft, the first connecting shaft is sleeved on a driving axle on the other side of the main test driving device, the first loading bearing and the second loading bearing are respectively arranged in loading bearing seats on the first loading support and the second loading support, vertical guide grooves are respectively arranged on the two loading bearing seats, the two guide grooves are respectively in clearance fit with guide seats with vertical guide functions, and the two guide seats are respectively fixed on the first loading support and the second loading support;

two groups of loading pull rod assemblies respectively pass through the loading support I and the loading support II from the bottom upwards, the upper ends of the loading pull rod assemblies are connected with the loading bearing seat through threads, the loading pull rod assemblies are pulled through a tensile stretcher capable of reading, the loading bearing seat is pulled, different tensile forces are applied to the loading bearing I and the loading bearing II on two sides, and the actual situation that the actual axle load is unevenly distributed is simulated.

Further, the first support bearing adopts a structure with both inner and outer rings axially floating, and the second support bearing adopts a structure with both inner and outer rings axially fixed;

the four support bearing seats are respectively welded on the first support bracket, the second support bracket, the first loading bracket and the second loading bracket, and reinforcing rib plates are respectively arranged between the four support bearing seats and the first support bracket, the second support bracket, the first loading bracket and the second loading bracket;

the first support bracket, the second support bracket, the first loading bracket and the second loading bracket are respectively connected and fixed with a T-shaped groove of the test platform through anchor bolt assemblies;

the two guide seats are welded on the first loading support and the second loading support respectively, and reinforcing rib plates are arranged between the two guide seats and the first loading support and the second loading support respectively.

Further, the torque loading device comprises a first connecting shaft, a second connecting shaft, a low-speed coupler, a first high-speed coupler, a second high-speed coupler, a main test motor assembly and a test accompanying motor assembly;

the first connecting shaft is sleeved at one end of the driving axle of the main test driving device in a pure interference connection mode, the second connecting shaft is sleeved at one end of the driving axle of the accompanying test driving device in a pure interference connection mode, and the first connecting shaft and the second connecting shaft are connected through a low-speed coupler; the input shaft of the main test driving device is connected with one high-speed coupler, the input shaft of the accompanying test driving device is connected with the other high-speed coupler as a torque input end of the test, and the two high-speed couplers are respectively connected with the main test motor component and the accompanying test motor component as a torque output end of the test.

Further, the torque balancing device comprises a hinge seat, a pin shaft, a self-lubricating bearing and a rubber sleeve;

the axle supporting device is characterized in that a hinge seat is welded on a supporting bracket II and a loading bracket I of the axle supporting device respectively, reinforcing rib plates are arranged on the hinge seat, the supporting bracket II and the loading bracket I, a rubber sleeve is arranged in the hinge seat, a self-lubricating bearing is arranged in the rubber sleeve, a pin shaft is arranged in the self-lubricating bearing, and the pin shaft is connected with a main test driving device and a torque arm of the accompanying test driving device through clearance fit, so that the torque aims of the main test driving device and the accompanying test driving device are balanced.

Further, the first support bearing, the second support bearing, the first loading bearing and the second loading bearing are lubricated in a grease lubrication mode, and are sealed through a sealing cover and the like carrying sealing elements.

The invention also provides a working method of the self-propelled metallurgical vehicle driving device combined loading test bed, which comprises the following steps:

step one, according to the structural description, an axle supporting device, an axle weight loading device, a torque balancing device, a main test driving device, a test accompanying driving device, a main test motor assembly and a test accompanying motor assembly are arranged on a test platform;

step two, injecting lubricating oil meeting the regulations into the main test driving device and the accompanying test driving device to the regulations;

step three, centering, calibrating and debugging test equipment, detection equipment and the like according to the regulations before the test, and checking whether each rotating piece has clamping stagnation phenomenon and abnormal sound;

step four, respectively applying tension to the two groups of loading pull rod assemblies by using two groups of stretchers capable of reading the tension, wherein the tension values can be respectively adjusted at any time in the test process to achieve the effect of simulating the axle under the same actual work or off-load axle weight;

step five, starting the main test motor assembly and the accompanying test motor assembly, respectively applying the main test driving device and the accompanying test driving device according to preset input rotating speed and torque through two high-speed couplings, and transmitting the torque and the rotating speed between the main test driving device and the accompanying test driving device through the low-speed couplings;

and step six, after the test is started, carrying out data monitoring on each parameter and key position of the driving device under the conditions of different tensile force, load rotation speed and axle deformation according to test requirements.

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

1. according to the self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof, the problem that the self-propelled metallurgical vehicle driving device is required to be subjected to shaft weight and torque combined test is solved, the test bed adopts a structure that the torque loading device is combined with the shaft weight loading device, so that the shaft weight of more than 40 tons can be loaded, the torque loading can be simultaneously carried out, and the dynamic simulation of the shaft weight and the torque is realized; in the prior art, no-load test can be performed only or torque loading test can be performed independently, so that the simultaneous simulation of axle weight and torque loading on the driving device can not be realized, and the actual working condition of the metallurgical vehicle can not be dynamically simulated.

2. According to the self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof, in order to better simulate actual running conditions of a metallurgical vehicle, the test bed adopts the design that the position of an axle load loading device is the same as that of a metallurgical vehicle bearing box, can be adjusted according to different vehicle types, simulates actual axle load action points, loads two ends respectively, applies different axle load, and simulates the actual condition that the actual axle load is unevenly distributed; the prior art can not carry out an axle load test on the driving device and can not simulate the severe working condition of the metallurgical vehicle during operation.

3. According to the self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof, in order to better simulate the stress action point and the stress condition of a metallurgical vehicle driving axle, the test bed adopts the design that the supporting action point of the axle supporting device is the same as the positions of wheels, and can be adjusted according to different vehicle types, and the action form, the transmission system and the assembly type of the axle are consistent with the actual vehicle, so that the actual structure of the metallurgical vehicle running can be simulated; in the prior art, only the wheels can run in the air or in a matched wheel mode, and the axle load cannot be applied, and the support of the wheel pair driving device can be simulated.

4. The self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof can finish the axle weight and torque loading test when the driving device leaves a factory, and do not need to carry out the thermal load test operation of a sample vehicle on the site of a user; in the prior art, no-load test or torque test can only be carried out on the driving device alone, the subsequent thermal load test operation has larger tests on the aspects of site, operation time, charging, overhauling, disassembling, safety, problem treatment and the like, and the time, manpower and material resource costs of manufacturers and users are wasted greatly.

5. The self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof have the advantages that the axial load loading device is simple in structure, reusable and low in purchasing and manufacturing cost.

6. The self-propelled metallurgical vehicle driving device combined loading test bed and the working method thereof provided by the invention are provided with the additional measuring element and the control system, so that the temperature of each bearing in the driving device, the temperature of the oil pump, the vibration of the driving device, the lubrication effect of the internal structure of the driving device, the dynamic sealing effect of the high-speed shaft and the driving axle, whether the clearance quantity of dynamic sealing meets the requirement, whether the gear engagement meets the standard and other items can be detected.

In summary, the technical scheme of the invention can solve the problems that the current verification can only carry out no-load test before the driving device leaves the factory, after the sample vehicle is delivered to the user, the thermal load test operation is carried out on the site of the user, the requirement on the test site is higher, the track line of the site is single, the normal production operation of other vehicles is influenced, the charging and maintenance of the vehicles are also included, and the long-time continuous test is difficult to ensure; meanwhile, the test is too long in time, once problems occur in the test, serious losses can be caused to the metallurgical vehicle, and the problems such as molten iron vehicles and the like can have serious influence on production safety; and the problems on site are difficult to solve rapidly, the disassembly and inspection work after the test is difficult to organize, and the time, manpower and material resource costs of manufacturers and users are wasted greatly.

Based on the reasons, the invention can be widely popularized in the fields of metallurgical transportation and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.

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

Fig. 2 is a top view of the present invention.

Fig. 3 is an enlarged view of the torque balancing device of the present invention.

Fig. 4 is an enlarged view of the load bearing housing and guide housing of the present invention.

Fig. 5 is a three-dimensional schematic of the present invention.

In the figure: 1. a first support bracket; 2. a second support bracket; 3. loading a first bracket; 4. loading a second bracket; 5. a first support bearing; 6. a second supporting bearing; 7. loading a first bearing; 8. loading a second bearing; 9. a support bearing seat; 10. loading a bearing seat; 11. a guide seat; 12. loading a pull rod assembly; 13. a tensioner capable of reading the tension; 14. a hinge base; 15. a pin shaft; 16. self-lubricating bearings; 17. a rubber sleeve; 18. a first connecting shaft; 19. a second connecting shaft; 20. a low speed coupling; 21. a high-speed coupling; 22. an anchor bolt assembly; 23. sealing cover; 24. a main test driving device; 25. a test accompanying driving device; 26. a main test motor assembly; 27. and (5) accompanying test motor components.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

As shown in figures 1-5, the invention provides a self-propelled metallurgical vehicle driving device combined loading test bed which mainly comprises an axle supporting device, an axle weight loading device, a torque loading device and a torque balancing device. Specifically, the self-propelled metallurgical vehicle driving device combined loading test bed comprises a first supporting bracket 1, a second supporting bracket 2, a first loading bracket 3, a second loading bracket 4, a first supporting bearing 5, a second supporting bearing 6, a first loading bearing 7, a second loading bearing 8, a supporting bearing seat 9, a loading bearing seat 10, a guide seat 11, a loading pull rod assembly 12, a tensile force readable stretcher 13, a hinging seat 14, a pin shaft 15, a self-lubricating bearing 16, a rubber sleeve 17, a first connecting shaft 18, a second connecting shaft 19, a low-speed coupler 20, a high-speed coupler 21, a foundation bolt assembly 22, a sealing cover 23, a main test driving device 24, a test accompanying driving device 25, a main test motor assembly 26, a test accompanying motor assembly 27 and other structures.

The two sides of the main test driving device 24 are respectively provided with a first support bearing 5, the first support bearings 5 are respectively sleeved at two ends of a driving axle of the main test driving device 24, the positions of the first support bearings 5 are the same as those of the wheels of the existing self-propelled metallurgical vehicle, the first support bearings 5 are respectively arranged in support bearing seats 9 on a first loading support 3 and a second loading support 4, the first support bearings 5 adopt a structure with axially floating inner rings and outer rings, the two support bearing seats 9 are respectively welded on the first loading support 3 and the second loading support 4, reinforcing rib plates are arranged between the two support bearing seats 9 and the first loading support 3 and the second loading support 4, and the first loading support 3 and the second loading support 4 are fixedly connected with T-shaped grooves of a test platform through anchor bolt assemblies 22; the two sides of the test accompanying driving device 25 are respectively provided with a first supporting bearing 5 and a second supporting bearing 6, the two supporting bearings 5 and the second supporting bearing 6 are sleeved at two ends of a driving axle of the test accompanying driving device 25, the first supporting bearing 5 and the second supporting bearing 6 are respectively arranged in supporting bearing seats 9 on the first supporting bracket 1 and the second supporting bracket 2, the first supporting bearing 5 adopts a structure with inner rings and outer rings axially floating, the second supporting bearing 6 adopts a structure with inner rings and outer rings axially fixed, the two supporting bearing seats 9 are respectively welded on the first supporting bracket 1 and the second supporting bracket 2, reinforcing rib plates are arranged between the two supporting bearing seats 9 and the first supporting bracket 1 and the second supporting bracket 2 respectively, and the first supporting bracket 1 and the second supporting bracket 2 are fixedly connected with T-shaped grooves of a test platform through anchor bolt assemblies 22. The structure forms the axle supporting device of the self-propelled metallurgical vehicle driving device combined loading test bed.

The two sides of the main test driving device 24 are respectively provided with a first loading bearing 7 and a second loading bearing 8, the first loading bearing 7 is directly sleeved on the driving axle of the main test driving device 24, the second loading bearing 8 is sleeved on the first connecting shaft 18, the positions of the first loading bearing 7 and the second loading bearing 8 are the same as the positions of two bearing boxes of the existing self-propelled metallurgical vehicle, and the first loading bearing 7 and the second loading bearing 8 are respectively positioned outside the first supporting bearing 5 at the two sides of the main test driving device 24. The first loading bearing 7 and the second loading bearing 8 are respectively arranged in the loading bearing seats 10 on the first loading support 3 and the second loading support 4, vertical guide grooves are formed in the loading bearing seats 10 and are in clearance fit with guide seats 11 with vertical guide functions, the guide seats 11 are welded on the first loading support 3 and the second loading support 4, reinforcing rib plates are arranged between the welding of the guide seats 11 and the first loading support 3 and between the welding of the guide seats 11 and the second loading support 4, the first loading support 3 and the second loading support 4 are fixedly connected with T-shaped grooves of the joint test platform through foundation bolt assemblies 22, the first loading support 3 and the second loading support 4 are respectively provided with two groups of loading pull rod assemblies 12 which penetrate from the bottom, the loading pull rod assemblies 12 are connected with the loading bearing seats 10 through threads, the loading pull rod assemblies 12 are pulled through a tensioner 13 capable of reading pulling the pulling force, and then the loading bearing seats 10 are pulled, different pulling forces can be applied to the first loading bearing 7 and the second loading bearing 8 on two sides, and the actual situation that the axle load distribution is uneven is simulated. The structure forms the axle load loading device of the self-propelled metallurgical vehicle driving device combined loading test bed.

The first connecting shaft 18 is sleeved at one end of a driving axle of the main test driving device 24 in a pure interference connection mode, the second connecting shaft 19 is sleeved at one end of a driving axle of the accompanying test driving device 25 in a pure interference connection mode, and the first connecting shaft 18 and the second connecting shaft 19 are connected through the low-speed coupler 20; the input shaft of the main test driving device 24 is connected to one high-speed coupling 21 (the high-speed coupling 21 on the right side in fig. 1), as a torque input for the test, the input shaft of the test driving device 25 is connected to the other high-speed coupling 21 (the high-speed coupling 21 on the left side in fig. 1), and as a torque output for the test, the two high-speed couplings 21 on the right and left sides in fig. 1 are connected to the main test motor assembly 26 and the test motor assembly 27, respectively. The structure forms a torque loading device of the self-propelled metallurgical vehicle driving device combined loading test bed.

The two hinge bases 14 are welded on the two support brackets 2 and the first loading bracket 3 respectively, reinforcing rib plates are arranged between the two hinge bases 14 and the two support brackets 2 and the first loading bracket 3, a rubber sleeve 17 is arranged in an opening on the hinge base 14, a self-lubricating bearing 16 is arranged in the rubber sleeve 17, a pin shaft 15 is arranged in the self-lubricating bearing 16, and the pin shaft 15 is connected with torque arms of the main test driving device 24 and the accompanying test driving device 25 through clearance fit, so that the torque aim of the balance driving device is achieved. The structure forms the torque balancing device of the self-propelled metallurgical vehicle driving device combined loading test bed.

As shown in fig. 1, the three first support bearings 5, the second support bearings 6, the first loading bearings 7 and the second loading bearings 8 are arranged in the following direction from right to left: load bearing one 7, support bearing one 5, load bearing two 8, support bearing one 5, support bearing two 6.

The self-propelled metallurgical vehicle driving device is lubricated by a grease lubrication mode through a first supporting bearing 5, a second supporting bearing 6, a first loading bearing 7 and a second loading bearing 8 of the combined loading test bed, and is sealed through a sealing cover 23 carrying a sealing element and the like. By means of the additional measuring elements and the control system of the test bed, the temperature of each bearing in the driving device, the temperature of the oil pump, vibration of the driving device, lubrication effect of the internal structure of the driving device, dynamic sealing effect of the high-speed shaft and the driving axle, whether the clearance amount of dynamic sealing meets the requirements, whether gear engagement meets the standards and the like can be detected.

The invention also provides a working method of the self-propelled metallurgical vehicle driving device combined loading test bed, which comprises the following steps:

step one, according to the above structure description, an axle supporting device, an axle weight loading device, a torque balancing device, a main test driving device 24, a test accompanying driving device 25, a main test motor assembly 26 and a test accompanying motor assembly 27 are mounted on a test platform;

step two, injecting lubricating oil meeting the regulation into the main test driving device 24 and the accompanying test driving device 25 to the regulation;

step three, centering, calibrating and debugging test equipment, detection equipment and the like according to the regulations before the test, and checking whether each rotating piece has clamping stagnation phenomenon and abnormal sound;

step four, respectively applying tension to the two groups of loading pull rod assemblies 12 by using two groups of stretchers 13 capable of reading the tension, wherein the tension values can be respectively adjusted at any time in the test process to achieve the effect of simulating the axle under the same actual work or off-load axle weight;

step five, starting a main test motor assembly 26 and a test accompanying motor assembly 27, respectively applying the main test driving device 24 and the test accompanying driving device 25 according to preset input rotation speed and torque through two high-speed couplings 21, and transmitting the torque and rotation speed between the main test driving device 24 and the test accompanying driving device 25 through the low-speed couplings 20;

and step six, after the test is started, carrying out data monitoring on each parameter and key position of the driving device under the conditions of different tensile force, load rotation speed and axle deformation according to test requirements.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (8)

1. A self-propelled metallurgical vehicle drive unit combination loading test stand, comprising: the test device comprises a main test driving device (24), a test accompanying driving device (25), an axle supporting device, an axle weight loading device, a torque loading device and a torque balancing device, wherein the axle supporting device, the axle weight loading device, the torque loading device and the torque balancing device are arranged on a test platform;

the axle supporting device is used for supporting a main test driving device (24) and a accompanying test driving device (25);

the two sides of the main test driving device (24) are respectively connected with a first loading bearing (7) and a second loading bearing (8), and the axle load loading device is connected with the first loading bearing (7) and the second loading bearing (8) and is used for applying different tensile forces to the first loading bearing (7) and the second loading bearing (8);

the main test driving device (24) is connected with the accompanying test driving device (25), and the torque loading device is connected with the main test driving device (24) and the accompanying test driving device (25) and is used for applying torque to the main test driving device (24) and the accompanying test driving device (25);

the torque balancing device is respectively connected with the main test driving device (24) and the accompanying test driving device (25) and is used for balancing the torque of the main test driving device (24) and the accompanying test driving device (25).

2. The self-propelled metallurgical vehicle driving device combined loading test bed according to claim 1, wherein the axle supporting device comprises a first supporting bracket (1), a second supporting bracket (2), a first loading bracket (3), a second loading bracket (4), a first supporting bearing (5), a second supporting bearing (6) and a supporting bearing seat (9);

two sides of the main test driving device (24) are respectively provided with a first supporting bearing (5), the two first supporting bearings (5) are respectively sleeved at two ends of a driving axle of the main test driving device (24) and are respectively arranged in supporting bearing seats (9) on a first loading support (3) and a second loading support (4), the two supporting bearing seats (9) are respectively fixed on the first loading support (3) and the second loading support (4), and the first loading support (3) and the second loading support (4) are both fixed on a test platform;

the two sides of the accompanying test driving device (25) are respectively provided with a first supporting bearing (5) and a second supporting bearing (6), the first supporting bearing (5) and the second supporting bearing (6) are respectively sleeved at two ends of a driving axle of the accompanying test driving device (25) and are respectively arranged in supporting bearing seats (9) on the first supporting bracket (1) and the second supporting bracket (2), the two supporting bearing seats (9) are respectively fixed on the first supporting bracket (1) and the second supporting bracket (2), and the first supporting bracket (1) and the second supporting bracket (2) are both fixed on a test platform.

3. The self-propelled metallurgical vehicle drive unit combination loading test stand according to claim 2, wherein the axle load loading unit comprises two loading bearing blocks (10), a guide block (11), a loading pull rod assembly (12) and a stretcher (13);

the two sides of the main test driving device (24) are respectively provided with a first loading bearing (7) and a second loading bearing (8), the first loading bearing (7) is sleeved on a driving axle on one side of the main test driving device (24), the second loading bearing (8) is sleeved on a connecting shaft (18), the connecting shaft (18) is sleeved on a driving axle on the other side of the main test driving device (24), the first loading bearing (7) and the second loading bearing (8) are respectively arranged in loading bearing seats (10) on a first loading support (3) and a second loading support (4), vertical guide grooves are respectively arranged on the two loading bearing seats (10), the two guide grooves are respectively in clearance fit with guide seats (11) with vertical guide functions, and the two guide seats (11) are respectively fixed on the first loading support (3) and the second loading support (4);

two groups of loading pull rod assemblies (12) respectively pass through the loading support I (3) and the loading support II (4) from the bottom upwards, the upper end of the loading pull rod assemblies (12) is connected with the loading bearing seat (10) through threads, the loading pull rod assemblies (12) are pulled through the tensile stretcher (13) capable of reading the pulling force, the loading bearing seat (10) is pulled, different pulling forces are applied to the loading bearing I (7) and the loading bearing II (8) on two sides, and the actual situation that the actual axle load distribution is uneven is simulated.

4. The self-propelled metallurgical vehicle driving device combined loading test bed according to claim 3, wherein the first supporting bearing (5) adopts a structure with axially floating inner and outer rings, and the second supporting bearing (6) adopts a structure with axially fixed inner and outer rings;

the four support bearing seats (9) are respectively welded on the first support bracket (1), the second support bracket (2), the first loading bracket (3) and the second loading bracket (4), and reinforcing rib plates are respectively arranged between the four support bearing seats and the first support bracket (1), the second support bracket (2), the first loading bracket (3) and the second loading bracket (4);

the first support bracket (1), the second support bracket (2), the first loading bracket (3) and the second loading bracket (4) are respectively fixed with the test platform through anchor bolt assemblies (22);

the two guide seats (11) are welded on the first loading support (3) and the second loading support (4) respectively, and reinforcing rib plates are arranged between the two guide seats and the first loading support (3) and the second loading support (4) respectively.

5. The self-propelled metallurgical vehicle driving device combined loading test bed according to claim 1, wherein the torque loading device comprises a first connecting shaft (18), a second connecting shaft (19), a low-speed coupling (20), a first high-speed coupling, a second high-speed coupling, a main test motor assembly (26) and a test accompanying motor assembly (27);

the first connecting shaft (18) is sleeved at one end of a driving axle of the main test driving device (24) in a pure interference connection mode, the second connecting shaft (19) is sleeved at one end of a driving axle of the accompanying test driving device (25) in a pure interference connection mode, and the first connecting shaft (18) and the second connecting shaft (19) are connected through the low-speed coupler (20); the input shaft of the main test driving device (24) is connected with one high-speed coupler (21), the input shaft of the accompanying test driving device (25) is connected with the other high-speed coupler (21) as a torque input end of a test, and the two high-speed couplers (21) are respectively connected with the main test motor assembly (26) and the accompanying test motor assembly (27) as a torque output end of the test.

6. The self-propelled metallurgical vehicle driving device combined loading test bed according to claim 1, wherein the torque balancing device comprises a hinge seat (14), a pin shaft (15), a self-lubricating bearing (16) and a rubber sleeve (17);

the vehicle axle supporting device is characterized in that a hinge seat (14) is welded on a supporting bracket II (2) and a loading bracket I (3) of the vehicle axle supporting device respectively, reinforcing rib plates are arranged on the hinge seat (14) and the supporting bracket II (2) and the loading bracket I (3), a rubber sleeve (17) is arranged inside the hinge seat (14), a self-lubricating bearing (16) is arranged inside the rubber sleeve (17), a pin roll (15) is arranged inside the self-lubricating bearing (16), and the pin roll (15) is connected with a main test driving device (24) and a torque arm of the accompanying test driving device (25) through clearance fit so as to achieve the purpose of balancing the torque of the main test driving device (24) and the accompanying test driving device (25).

7. The self-propelled metallurgical vehicle driving device combined loading test stand according to claim 3 or 4, wherein the first support bearing (5), the second support bearing (6), the first loading bearing (7) and the second loading bearing (8) are lubricated by grease lubrication, and are sealed by a sealing cover (23) carrying a sealing element.

8. A method of operating a self-propelled metallurgical vehicle drive unit combination loading test bed as claimed in any one of claims 1 to 7, comprising the steps of:

step one, mounting an axle supporting device, an axle weight loading device, a torque balancing device, a main test driving device (24), a test accompanying driving device (25), a main test motor assembly (26) and a test accompanying motor assembly (27) on a test platform;

step two, injecting lubricating oil meeting the regulation into the main test driving device (24) and the accompanying test driving device (25) to the regulation;

step three, centering, calibrating and debugging test equipment and detection equipment according to the regulations before the test, and checking whether each rotating piece has clamping stagnation phenomenon and abnormal sound;

step four, respectively applying tension to the two groups of loading pull rod assemblies (12) by using two groups of tensioners (13) capable of reading the tension, wherein the tension values can be respectively adjusted at any time in the test process to achieve the effect of simulating the axle under the same actual work or off-load axle weight;

step five, starting a main test motor assembly (26) and a test accompanying motor assembly (27), respectively applying a main test driving device (24) and a test accompanying driving device (25) according to preset input rotation speed and torque through two high-speed couplings (21), and transmitting the torque and rotation speed between the main test driving device (24) and the test accompanying driving device (25) through a low-speed coupling (20);

and step six, after the test is started, carrying out data monitoring on each parameter and key position of the driving device under the conditions of different tensile force, load rotation speed and axle deformation according to test requirements.