Crawler performance test device and test system

Abstract

The present disclosure provides a track performance test device and a test system. The track performance test device comprises: a power input device configured to be connected with one of the track drives to apply a first load for simulating driving force for making the track travel; a bearing device comprising two bearing parts arranged side by side, each bearing part is configured to support one track, and at least one bearing part comprises a load simulation device configured to apply a second load for simulating ground resistance to the track; and a detection device configured to obtain performance data of the tracked chassis, the performance data comprising temperature data and / or wear data of the track. The track performance test system comprises: a housing space; a track performance test device; and a temperature adjusting device. The present disclosure can obtain more accurate test data of track performance.

Description

Technical Field

[0001] This disclosure relates to the field of engineering machinery, and in particular to a track performance testing device and testing system. Background Technology

[0002] Currently, the overall performance level of domestically produced rubber tracks varies considerably, lagging significantly behind international standards. In particular, there is a lack of accumulated test data on high-speed performance, resulting in unclear performance indicators and significant temperature rise of the tracks during high-speed operation. Many construction machinery manufacturers can only make a rough selection of tracks before directly installing and testing them. Often, the inability of the tracks to meet design requirements at both high and low speeds delays product development cycles, leading to a significant waste of human, material, and financial resources. Summary of the Invention

[0003] The purpose of this disclosure is to provide a track performance testing device and testing system.

[0004] The first aspect of this disclosure provides a track performance testing device for testing the performance of a tracked chassis of tracked engineering machinery, the tracked chassis comprising two tracks arranged side by side, including:

[0005] A power input device is configured to connect to one of the track drives to apply a first load to the tracked chassis to simulate the driving force that propels the tracks.

[0006] A load-bearing device includes two side-by-side load-bearing sections, each configured to support one of the tracks, and at least one of the load-bearing sections includes a load simulation device configured to apply a second load to the track to simulate the resistance of the ground to the tracked chassis; and

[0007] The detection device is configured to acquire performance data of the tracked chassis, the performance data including temperature data and / or wear data of the tracks.

[0008] According to some embodiments of this disclosure, the load simulation device includes:

[0009] First mounting base;

[0010] A load input device is configured to output the torque required to apply the second load; and

[0011] A first transmission mechanism, mounted on the first mounting base and drivenly connected to the load input device, is configured to apply the second load to the track.

[0012] According to some embodiments of this disclosure, the first transmission mechanism includes:

[0013] Multiple rollers are rotatably arranged side-by-side on the first mounting base about a horizontal axis perpendicular to the extension direction of the support portion; and

[0014] A conveyor belt is disposed circumferentially outside the plurality of rollers and drivenly connected to at least one of the rollers, and the first transmission mechanism applies the second load to the track via the conveyor belt.

[0015] According to some embodiments of this disclosure, the load simulation device further includes a tensioning component, a first end of which is fixedly connected to the first mounting base, and a second end of which is fixedly connected to the roller at the end of the bearing portion in the extending direction and is movably disposed along the extending direction of the bearing portion, so that the conveyor belt can be tensioned by adjusting the spacing of the rollers.

[0016] According to some embodiments of this disclosure, the first transmission mechanism includes a plurality of rollers, which are rotatably arranged side by side on the first mounting base about a horizontal axis perpendicular to the extension direction of the bearing portion and along the extension direction of the bearing portion. The load input device is driven connected to the plurality of rollers in a one-to-one correspondence, and the first transmission mechanism applies the second load to the track through the plurality of rollers.

[0017] According to some embodiments of this disclosure, the load input device includes:

[0018] First hydraulic pump;

[0019] A first hydraulic motor is driven and connected to the first transmission mechanism to output torque to the first transmission mechanism, and a first oil port of the first hydraulic motor is connected to the oil outlet of the first hydraulic pump; and

[0020] A resistance regulating valve is provided, wherein the oil inlet of the resistance regulating valve is connected to the second oil port of the first hydraulic motor, so that the pressure of the oil inlet and outlet of the resistance regulating valve is adjustable, thereby making the torque output by the load input device adjustable.

[0021] According to some embodiments of this disclosure, the load input device further includes a heat dissipation device disposed on the hydraulic circuit formed by the first hydraulic pump, the first hydraulic motor and the resistance regulating valve, for dissipating heat from the hydraulic circuit.

[0022] According to some embodiments of this disclosure, the heat dissipation device includes a radiator and a fan, the oil inlet of the radiator is connected to the oil outlet of the resistance regulating valve, the oil outlet of the radiator is connected to the oil return pipeline, and the fan is arranged correspondingly to the radiator.

[0023] According to some embodiments of this disclosure, the load input device further includes a second hydraulic motor, the fan is driven and connected to the second hydraulic motor, and the second hydraulic motor is arranged in parallel with the first hydraulic motor and the resistance regulating valve at one end of the oil inlet of the radiator.

[0024] According to some embodiments of this disclosure, a base is also included, on which the power input device and the load-bearing device are arbitrarily disposed.

[0025] According to some embodiments of this disclosure, the tracked chassis includes a drive wheel driven by the track, and the power input device includes:

[0026] The drive unit is configured to output the torque required to apply the first load; and

[0027] The second transmission mechanism has a driving connection between the driving device and the power input end of the second transmission mechanism, and a power output end of the second transmission mechanism is used to drive the drive wheel. The second transmission mechanism has multiple gears to output different torques to the drive wheel.

[0028] According to some embodiments of this disclosure, of the two load-bearing parts, one includes the load simulation device, and the other includes a support and a leveling component, the leveling component being disposed on the support to adjust the relative height of the two tracks.

[0029] According to some embodiments of this disclosure, a fixing part is also included, the lower end of which is fixed to the base, and the upper end of which is connected between the two tracks and configured to restrict the rotational degree of freedom of the tracked chassis about a vertical axis and / or the rotational degree of freedom of a horizontal axis parallel to the extension direction of the bearing part.

[0030] According to some embodiments of this disclosure, a counterweight is also included, which is disposed on the tracked chassis and the weight of the counterweight is adjustable so that the pressure of the tracked chassis on the load-bearing device can simulate the pressure of different tracked construction machinery on the ground.

[0031] According to some embodiments of this disclosure, the detection device includes a temperature detection device, which includes a detection module and a control module signal-connected to the detection module. The detection module is configured to acquire temperature test data of the track, and the control module is configured to provide an alarm signal indicating that the temperature rise of the track is too high when the temperature rise of the track reaches a first preset value.

[0032] A second aspect of this disclosure provides a track performance testing system, comprising:

[0033] Storage space;

[0034] The track performance testing device described in the first aspect of this disclosure is disposed within the accommodating space; and

[0035] A temperature regulating device is installed within the accommodating space and is configured to regulate the ambient temperature within the accommodating space to simulate the operating conditions of tracked construction machinery at different temperatures.

[0036] In the track performance device provided in this embodiment, the first load applied by the power input device can simulate the driving force of the tracked engineering machinery on the tracked chassis. The second load applied by the load simulation device simulates the resistance encountered by the tracked chassis when it is traveling. By adjusting the magnitude of the first load and the second load, different and more realistic walking conditions of the tracked chassis can be simulated. Before the tracked engineering machinery is assembled, the performance data of the tracked chassis can be obtained, which is conducive to the accurate selection of components such as tracks, shortens the test cycle and R&D cycle of the whole machine, and reduces the waste of manpower, material resources and financial resources.

[0037] The track performance testing system provided in the embodiments of this disclosure not only has the advantages of the aforementioned track performance testing device, but also, by setting a temperature adjustment device in the accommodating space, can form test environments with different temperatures, thereby facilitating the verification of the comprehensive characteristics of the tracked chassis under different working conditions such as high temperature environment or low temperature environment.

[0038] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0039] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0040] Figure 1 This is a schematic diagram of the track performance testing device according to some embodiments of the present disclosure.

[0041] Figure 2 for Figure 1 The diagram shows a rear view of the track performance testing device.

[0042] Figure 3 This is a schematic diagram of the structure of a load simulation device according to some embodiments of the present disclosure.

[0043] Figure 4 This is a schematic diagram of the structure of a load simulation device according to some other embodiments of the present disclosure.

[0044] Figure 5This is a schematic diagram of the hydraulic principle of the load input device according to some embodiments of this disclosure.

[0045] Figure 6 This is a schematic diagram of the structure of a power input device according to some embodiments of this disclosure.

[0046] Figures 1 to 6 In the figures, the labels represent:

[0047] 1. Tracked chassis; 11. Tracks; 12. Drive wheels;

[0048] 2. Power input device; 21. Drive device; 22. Second mounting base; 23. Second transmission mechanism; 24. Connecting component;

[0049] 3. Base;

[0050] 4. Load simulation device; 41. First mounting base; 42. Conveyor belt; 43. Load input device; 431. First hydraulic pump; 432. First hydraulic motor; 433. Resistance regulating valve; 434. Cooling device; 4341. Radiator; 4342. Fan; 4343. Second hydraulic motor; 435. Second hydraulic pump; 44. Roller; 45. Tensioning component; 46. Reducer; C1. First check valve; C2. Second check valve; C3. Third check valve; C4. Fourth check valve; S1. First safety valve; S2. Second safety valve.

[0051] 5. Support base;

[0052] 6. Fixing part;

[0053] 7. Counterweight;

[0054] 8. Temperature detection device. Detailed Implementation

[0055] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0058] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0059] like Figure 1 and Figure 2 As shown, some embodiments of this disclosure provide a track performance testing device for testing the performance of a tracked chassis 1 of tracked engineering machinery. The tracked chassis 1 includes two tracks 11 arranged side by side. The tracks 11 can be rubber tracks, metal tracks, etc.

[0060] The track performance testing device includes a power input device 2, a load-bearing device, and a testing device.

[0061] The power input device 2 is configured to drively connect with one of the tracks 11 to apply a first load to the tracked chassis 1 to simulate the driving force that propels the track 11.

[0062] The load-bearing device includes two load-bearing sections arranged side by side. Each load-bearing section is configured to support a track 11, and at least one of the load-bearing sections includes a load simulation device 4. The load simulation device 4 is configured to apply a second load to the track 11 to simulate the resistance of the ground to the tracked chassis 1.

[0063] The detection device is configured to acquire performance data of the tracked chassis 1, including temperature data and / or wear data of the tracks 11. Accordingly, the detection device may include a temperature detection device and a wear detection device, etc.

[0064] In the track performance device provided in this embodiment, the first load applied by the power input device can simulate the driving force of the tracked engineering machinery on the tracked chassis. The second load applied by the load simulation device simulates the resistance encountered by the tracked chassis when it is traveling. By adjusting the magnitude of the first load and the second load, different and more realistic walking conditions of the tracked chassis can be simulated. Before the tracked engineering machinery is assembled, the performance data of the tracked chassis can be obtained, which is conducive to the accurate selection of components such as tracks, shortens the test cycle and R&D cycle of the whole machine, and reduces the waste of manpower, material resources and financial resources.

[0065] In some embodiments, the load simulation device 4 includes a first mounting base 41, a load input device 43, and a first transmission mechanism. The load input device 43 is configured to output the torque required to apply the second load. The first transmission mechanism is mounted on the first mounting base 41 and drivenly connected to the load input device 43, and is configured to apply the second load to the track 11.

[0066] To simulate different operating conditions, the first transmission mechanism may include a speed change device to output different torques. Alternatively, different first transmission mechanisms may be used to simulate different operating conditions by changing the contact pattern between the track 11 and the first transmission mechanism.

[0067] In some embodiments, such as Figure 3 As shown, the first transmission mechanism includes a plurality of rollers 44 and a conveyor belt 42. The plurality of rollers 44 are rotatably arranged side by side on the first mounting base 41 about a horizontal axis perpendicular to the extension direction of the bearing portion. The conveyor belt 42 is disposed circumferentially outside the plurality of rollers 44 and is drivenly connected to at least one roller 44. The first transmission mechanism applies a second load to the track 11 through the conveyor belt 42.

[0068] In this embodiment, the track 11 on one side of the tracked chassis is placed on the conveyor belt 42, and the second load is the resistance of the conveyor belt 42 to the track 11.

[0069] In some embodiments, such as Figure 3As shown, in order to provide the tension required for stable and reliable power transmission to the conveyor belt 42, the load simulation device 4 also includes a tensioning member 45. The first end of the tensioning member 45 is fixedly connected to the first mounting base 41, and the second end of the tensioning member 45 is fixedly connected to the roller 44 located at the end of the bearing portion in the extension direction and is movably arranged in the extension direction of the bearing portion so that the conveyor belt 42 can be tensioned by adjusting the spacing of the rollers 44.

[0070] In some embodiments, such as Figure 4 As shown, the first transmission mechanism includes multiple rollers 44, which are rotatably arranged side by side on the first mounting base 41 about a horizontal axis perpendicular to the extension direction of the load-bearing part. The load input device 43 is driven to drive the multiple rollers 44 one by one. The first transmission mechanism applies a second load to the track 11 through the multiple rollers 44.

[0071] In this embodiment, the track 11 on one side of the tracked chassis is placed on multiple rollers 44, and the second load is the resistance of the multiple rollers 44 to the track 11.

[0072] In some embodiments, such as Figure 5 As shown, the load input device 43 includes a first hydraulic pump 431, a first hydraulic motor 432, and a resistance regulating valve 433. The first hydraulic motor 432 is drivenly connected to a first transmission mechanism to output torque to the first transmission mechanism, and the first oil port of the first hydraulic motor 432 is connected to the oil outlet of the first hydraulic pump 431. The oil inlet of the resistance regulating valve 433 is connected to the second oil port of the first hydraulic motor 432, making the pressure between the oil inlet and outlet of the resistance regulating valve 433 adjustable, thereby making the torque output by the load input device 43 adjustable.

[0073] The first hydraulic motor 432 is driven by the first transmission mechanism, and can be used as follows: Figure 4 and Figure 5 As shown, the first hydraulic motor 432 is driven and connected to one or more rollers 44 via a reducer 46. The resistance regulating valve 433 can be an overflow valve, and the overflow pressure of the overflow valve is the pressure that connects the inlet and outlet of the resistance regulating valve 433. During the test, the track 11, driven by the power input device 2, drives the first hydraulic motor 432 to rotate. After the second oil port of the first hydraulic motor 432 reaches the overflow pressure, the inlet and outlet of the overflow valve are connected, and the first hydraulic pump 431 supplies oil to the first hydraulic motor 432, maintaining the overflow pressure value to drive the first hydraulic motor 432 to continuously and stably output the torque required to apply the second load.

[0074] Based on the above working process, the load input device 43 generates a large amount of heat during operation. In some embodiments, the load input device 43 further includes a heat dissipation device 434, which is disposed on the hydraulic circuit formed by the first hydraulic pump 431, the first hydraulic motor 432 and the resistance regulating valve 433, to dissipate heat from the hydraulic circuit.

[0075] In some embodiments, the heat dissipation device 434 includes a radiator 4341 and a fan 4342. The oil inlet of the radiator 4341 is connected to the oil outlet of the resistance regulating valve 433, and the oil outlet of the radiator 4341 is connected to the oil return pipeline. The fan 4342 is correspondingly arranged with the radiator 4341.

[0076] The combination of the radiator 4341 and fan 4342 can enhance the heat dissipation effect of the heat dissipation device, which is conducive to the stable operation of the track performance testing device.

[0077] In some embodiments, such as Figure 5 As shown, the load input device 43 also includes a second hydraulic motor 4343. The fan 4342 is driven and connected to the second hydraulic motor 4343. The second hydraulic motor 4343 is connected in parallel with the first hydraulic motor 432 and the resistance regulating valve 433 at one end of the oil inlet of the radiator 4341.

[0078] Figure 5 In the illustrated embodiment, the load simulation device 43 may further include a second hydraulic pump 435, which is driven by a second hydraulic motor 4343 to drive a fan 4342. The hydraulic circuit of the load simulation device 43 is also equipped with a first check valve C1, a second check valve C2, a third check valve C3, a fourth check valve C4, a first safety valve S1, and a second safety valve S2, etc., for safety protection.

[0079] In some embodiments not shown, the load simulation device mentioned above may also be a power dynamometer.

[0080] In some embodiments, the track performance testing device further includes a base 3, and the power input device 2 and the load-bearing device are adjustablely disposed on the base 3.

[0081] The base 3 can be used to fix the mounting base 41 and support base 5 of the power input device 2 and the load simulation device 4. Furthermore, by changing the fixing positions of the power input device 2, the mounting base 41 and the support base 5, it can adapt to the test requirements of different specifications of tracked chassis 1.

[0082] In some embodiments, such as Figure 6As shown, the tracked chassis 1 includes a drive wheel 12 driven by a track 11, and the power input device 2 includes a drive unit 21 and a second transmission mechanism 23. The drive unit 21 is configured to output the torque required to apply a first load. The drive unit 21 is driven by the power input end of the second transmission mechanism 23, and the power output end of the second transmission mechanism 23 is driven by the drive wheel 12. The speed output of the power output end of the second transmission mechanism 23 is adjustable to output different torques to the drive wheel 12.

[0083] The drive unit 21 can be a device capable of outputting power, such as an electric motor or a hydraulic motor. The second transmission mechanism 23 can be a multi-speed reduction gearbox or other transmission device capable of providing multiple speed ratios. By adjusting the speed at the power output end, the torque output by the second transmission mechanism 23 to the drive wheel 12 can be adjusted, thereby simulating different magnitudes of driving force output by the tracked construction machinery under different working conditions.

[0084] In some embodiments, such as Figure 1 , Figure 2 and Figure 6 As shown, the power input device 2 also includes a second mounting base 22 mounted on the base 3 and a connecting component 24 for connecting the power output end of the second transmission mechanism 23 and the drive wheel 12. The drive device 21 is fixedly mounted on the second mounting base 22. The connecting component 24 should meet the requirement of being able to withstand the maximum torque output by the drive device 21, so as to achieve a reliable connection between the power output end of the second transmission mechanism 23 and the drive wheel 12.

[0085] In some embodiments, such as Figure 1 and Figure 2 As shown, one of the two load-bearing parts includes a load simulation device 4, and the other includes a support base 5 and a leveling component. The leveling component is mounted on the support base 5 to adjust the relative height of the two tracks 11.

[0086] The support seat 5 provides a placement position for the track on one side of the tracked chassis 1, thus providing support. Figure 1 and Figure 2 In the embodiment shown, the support base 5 can be composed of structures such as a U-shaped bent plate, a flat plate, and reinforcing ribs.

[0087] In some embodiments not shown, both load-bearing components may also include load simulation devices and be configured with corresponding leveling components according to test requirements.

[0088] The leveling component mentioned above can be a shim, which is added or removed from the support 5 during testing to change the track height. The leveling component can also be a mechanical structure with height adjustment function, such as a feed mechanism that can drive the upper end face of the support 5 to move along the height direction of the support 5.

[0089] By installing a leveling component on the support 5, the two tracks on both sides of the tracked chassis 1 can be adjusted to the same height. Of course, in order to simulate the performance of the tracked chassis in complex environments, such as the wear and temperature changes of tracks or other components under complex terrain, the two tracks on both sides of the tracked chassis 1 can also be adjusted to unequal heights by using the leveling component, thereby simulating different driving conditions by changing the contact method between the tracks and the two load-bearing parts.

[0090] In some embodiments, such as Figure 1 and Figure 2 As shown, the track performance testing device also includes a fixing part 6. The lower end of the fixing part 6 is fixed to the base 3, and the upper end of the fixing part 6 is connected between the two tracks 11 and is configured to restrict the rotational degree of freedom of the tracked chassis 1 about the vertical axis and / or the rotational degree of freedom of the horizontal axis parallel to the extension direction of the bearing part.

[0091] The fixing part 6 can be welded from an I-beam and a flat plate. Multiple sets of connecting holes for fixing the tracked chassis 1 can be provided on the I-beam. By fixing it to the tracked chassis 1, unnecessary rotation of the tracked chassis 1 during the test is restricted, thereby making the test results more reliable.

[0092] In some embodiments, such as Figure 1 As shown, the track performance testing device also includes a counterweight 7, which is used to be set on the tracked chassis 1. The weight of the counterweight 7 is adjustable so that the pressure of the tracked chassis 1 on the load-bearing device can simulate the pressure of different tracked engineering machinery on the ground.

[0093] By setting counterweights 7 of different weights on the tracked chassis 1, the pressure of different tracked engineering machinery on the ground can be simulated, which is conducive to obtaining more realistic and reliable test results. The material forming the counterweights 7 can be bulk steel shot, rectangular or round cast iron, etc. The material of the counterweights 7 can be increased or decreased as needed to make its weight meet the simulation of different test requirements.

[0094] In some embodiments, such as Figure 1 and Figure 2 As shown, the detection device includes a temperature detection device 8, which includes a detection module and a control module connected to the detection module. The detection module is configured to acquire temperature test data of the track 11, and the control module is configured to provide an alarm signal indicating that the temperature rise of the track 11 is too high when the temperature rise of the track 11 reaches a first preset value.

[0095] The detection module may include one or more temperature sensors. To comprehensively monitor the temperature changes of the track 11 during the test, multiple temperature sensors can be set at different locations on the track 11. The first preset value can be determined according to the test requirements.

[0096] In some embodiments, the control module described above may be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described herein.

[0097] Some embodiments of this disclosure also provide a track performance testing system, including a accommodating space, a track performance testing device provided in the embodiments of this disclosure, and a temperature regulating device. The track performance testing device is disposed within the accommodating space, and the temperature regulating device is disposed within the accommodating space and configured to regulate the ambient temperature within the accommodating space to simulate the operating conditions of tracked construction machinery at different temperatures.

[0098] The storage space can be an enclosed indoor space, and the temperature control device can be an air conditioning system, etc.

[0099] The track performance testing system provided in the embodiments of this disclosure not only has the advantages of the aforementioned track performance testing device, but also, by setting a temperature adjustment device in the accommodating space, can form test environments with different temperatures, thereby facilitating the verification of the comprehensive characteristics of the tracked chassis under different working conditions such as high temperature environment or low temperature environment.

[0100] The following example, using the verification of the temperature rise of a rubber track at a specified speed, further illustrates the usage of the track performance testing device provided in some embodiments of this disclosure.

[0101] The two tracks 11 on both sides of the tracked chassis 1 are placed on the load simulation device 4 and the support seat 5 respectively. The power input device 2 is connected to the drive wheel 12, and the tracked chassis 1 is connected to the fixed part 6.

[0102] A counterweight 7 is placed on the tracked chassis 1 so that the position of its center of gravity meets the test requirements.

[0103] Start the drive unit 21 and adjust the gear of the second transmission mechanism 23 according to the test requirements to output the highest speed to the drive wheel 12.

[0104] Adjust the overflow pressure of the resistance regulating valve 433 to simulate the resistance of the rubber track at this maximum speed. Start the load simulation device 4. After the second port of the first hydraulic motor 432 reaches the overflow pressure, the load simulation device 4 applies a second load to the rubber track through the conveyor belt 42 to simulate the resistance of the ground to the tracked chassis 1.

[0105] The tracked chassis was run under the above test conditions for a certain period of time or distance, and the temperature rise of the rubber tracks was dynamically monitored during this process.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A track performance testing device for testing the performance of a tracked chassis (1) of tracked engineering machinery, wherein the tracked chassis (1) comprises two tracks (11) arranged side by side, characterized in that, include: A power input device (2) is configured to drively connect with one of the tracks (11) to apply a first load to the tracked chassis (1) to simulate the driving force that causes the tracks (11) to move. The load-bearing device includes two load-bearing sections arranged side by side, each load-bearing section being configured to support one of the tracks (11), and at least one of the load-bearing sections includes a load simulation device (4) configured to apply a second load to the track (11) to simulate the resistance of the ground to the tracked chassis (1), the load simulation device (4) including a first mounting base (41), a load input device (43) and a first transmission mechanism, the load input device (43) being configured to output the torque required to apply the second load, the first transmission mechanism being mounted on the first mounting base (41) and drivenly connected to the load input device (43), and being configured to apply the second load to the track (11); and The detection device is configured to acquire performance data of the tracked chassis (1), the performance data including temperature data and / or wear data of the tracks (11); The load input device (43) includes a first hydraulic pump (431), a first hydraulic motor (432), and a resistance regulating valve (433). The first hydraulic motor (432) is driven to the first transmission mechanism to output torque to the first transmission mechanism. The first oil port of the first hydraulic motor (432) is connected to the oil outlet of the first hydraulic pump (431), and the oil inlet of the resistance regulating valve (433) is connected to the second oil port of the first hydraulic motor (432), so that the pressure of the oil inlet and oil outlet of the resistance regulating valve (433) is adjustable, so that the torque output by the load input device (43) is adjustable. The load input device (43) further includes a heat dissipation device (434), which is disposed on the hydraulic circuit formed by the first hydraulic pump (431), the first hydraulic motor (432) and the resistance regulating valve (433) to dissipate heat from the hydraulic circuit. The heat dissipation device (434) includes a radiator (4341) and a fan (4342). The oil inlet of the radiator (4341) is connected to the oil outlet of the resistance regulating valve (433), and the oil outlet of the radiator (4341) is connected to the return oil pipeline. The fan (4342) is disposed corresponding to the radiator (4341). The load input device (43) further includes a second hydraulic motor (4343), the fan (4342) is driven and connected to the second hydraulic motor (4343), and the second hydraulic motor (4343) is arranged in parallel with the first hydraulic motor (432) and the resistance regulating valve (433) at one end of the oil inlet of the radiator (4341).

2. The track performance testing device according to claim 1, characterized in that, The first transmission mechanism includes: Multiple rollers (44) are rotatably arranged side-by-side on the first mounting base (41) about a horizontal axis perpendicular to the extension direction of the bearing portion; and A conveyor belt (42) is disposed circumferentially outside the plurality of rollers (44) and drivenly connected to at least one of the rollers (44), and the first transmission mechanism applies the second load to the track (11) via the conveyor belt (42).

3. The track performance testing device according to claim 2, characterized in that, The load simulation device (4) further includes a tensioning component (45), the first end of which is fixedly connected to the first mounting base (41), and the second end of which is fixedly connected to the roller (44) located at the end of the extension direction of the bearing portion and is movably arranged along the extension direction of the bearing portion, so that the conveyor belt (42) can be tensioned by adjusting the spacing of the roller (44).

4. The track performance testing device according to claim 1, characterized in that, The first transmission mechanism includes a plurality of rollers (44), which are rotatably arranged side by side on the first mounting base (41) about a horizontal axis perpendicular to the extension direction of the bearing portion. The load input device (43) is driven connected to the plurality of rollers (44) in a one-to-one correspondence. The first transmission mechanism applies the second load to the track (11) through the plurality of rollers (44).

5. The track performance testing device according to any one of claims 1 to 4, characterized in that, It also includes a base (3), on which the power input device (2) and the bearing device are arbitrarily mounted.

6. The track performance testing device according to any one of claims 1 to 4, characterized in that, The tracked chassis (1) includes a drive wheel (12) driven by the track (11), and the power input device (2) includes: The drive unit (21) is configured to output the torque required to apply the first load; and The second transmission mechanism (23) is driven by the drive device (21) and the power input end of the second transmission mechanism (23). The power output end of the second transmission mechanism (23) is used to drive the drive wheel (12). The speed output of the power output end of the second transmission mechanism (23) is adjustable to output different torques to the drive wheel (12).

7. The track performance testing device according to any one of claims 1 to 4, characterized in that, Of the two load-bearing components, one includes the load simulation device (4), and the other includes a support (5) and a leveling component, which is mounted on the support (5) to adjust the relative height of the two tracks (11).

8. The track performance testing device according to claim 5, characterized in that, It also includes a fixing part (6), the lower end of which is fixed to the base (3), and the upper end of which is connected between the two tracks (11) and configured to restrict the rotational degree of freedom of the tracked chassis (1) about the vertical axis and / or the rotational degree of freedom of the horizontal axis parallel to the extension direction of the bearing part.

9. The track performance testing device according to any one of claims 1 to 4, characterized in that, It also includes a counterweight (7) which is set on the tracked chassis (1). The weight of the counterweight (7) is adjustable so that the pressure of the tracked chassis (1) on the load-bearing device can simulate the pressure of different tracked engineering machinery on the ground.

10. The track performance testing device according to any one of claims 1 to 4, characterized in that, The detection device includes a temperature detection device (8), which includes a detection module and a control module connected to the detection module. The detection module is configured to acquire temperature test data of the track (11), and the control module is configured to provide an alarm signal indicating that the temperature rise of the track (11) is too high when the temperature rise of the track (11) reaches a first preset value.

11. A track performance testing system, characterized in that, include: Storage space; The track performance testing device according to any one of claims 1 to 10 is disposed within the accommodating space; and A temperature regulating device is installed within the accommodating space and is configured to regulate the ambient temperature within the accommodating space to simulate the operating conditions of tracked construction machinery at different temperatures.

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