An engine output torque testing device for the powertrain of an armored vehicle

Abstract

The present invention belongs to the field of vehicle engineering and relates to an engine torque testing device in the power-train test of an armored vehicle. The torque testing device is arranged between the engine and the integrated transmission. The engine outputs power through an output gear, and the integrated transmission inputs power through a gear sleeve. The gear is inserted into the output gear sleeve of the torque testing device, and the outer gear of the torque testing device is cooperatively connected with the gear sleeve to realize the transmission of the engine power to the integrated transmission. The engine torque measuring device of the present invention has a high integration degree. Without changing the output end of the engine and the input end of the integrated transmission device, the measurement of the engine output torque can be quickly realized, and the test cost is greatly reduced. In addition, by integrally designing the torque testing device in the power-train, the centering accuracy of the power-train is effectively improved, the length of the power-train for the test is shortened, and the test safety of the power-train is enhanced.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle engineering and relates to an engine torque testing device in the power-train test of an armored vehicle, which can solve the problems of difficult acquisition of engine torque and inability to directly test the total efficiency of the power train in the test of high-power power trains, and provide a prerequisite and basis for the power flow test of the power train. This device can be widely applied to the performance test of the power train and has good engineering application value. Background Art

[0002] With the continuous development of the power device technology of armored vehicles, the power density of the power train composed of an engine, a comprehensive transmission device, and an auxiliary system is getting higher and higher, and the requirement for power flow testing of the entire power train in terms of performance is also becoming more urgent. The complete power flow test of the power train needs to test the engine output power, the comprehensive transmission output power, the power consumed by the cooling system, the power consumed by the engine intake and exhaust, etc., in order to obtain the power consumption of each link of the power train and calculate the total efficiency of the power train, so as to provide data support for the vehicle propulsion system. Traditional power train tests generally can only test the power of the system except for the engine power, which results in the inability to test the total efficiency of the power train. Since the test device required for testing the engine output power in the power train test is relatively complex, most power train tests do not test the engine output power. Therefore, there are problems such as the inability to obtain the power input of the power train and the unclear total power efficiency. Traditional engine output power tests generally install a speed-torque sensor between the engine output and the comprehensive transmission input:

[0003] The above tests have the following problems:

[0004] 1. Since the power of the armored vehicle engine is very high, the axial direction of the adopted speed-torque sensor will be very long, resulting in an increase in the required test site length.

[0005] 2. Since the speed-torque sensor is very long, the engine, the comprehensive transmission device, and the speed-torque sensor need to be fixed on the base plate respectively, and the three parts need to be centered respectively, so the centering accuracy is poor, which affects the test safety.

[0006] 3. The engine, the comprehensive transmission device, and the speed-torque sensor are installed separately, and the overall hoisting of the power train cannot be achieved, resulting in low work efficiency and long test cycle.

[0007] Therefore, it is extremely necessary to invent an embedded engine output torque testing device, integrate the torque testing device into the power train, improve the centering accuracy of the power train, shorten the length of the power train for testing, and improve the test safety of the power train. Summary of the Invention

[0008] The object of the present invention is to provide an engine output torque testing device for an armored vehicle power assembly test.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows:

[0010] The present invention provides an engine output torque testing device for an armored vehicle power assembly. The torque testing device is arranged between the engine and the integrated transmission device. The engine 1 outputs power through the output gear 29, and the integrated transmission device inputs power through the gear sleeve 16. The gear 29 is inserted into the output gear sleeve 4 of the torque testing device, and the outer gear 14 of the torque testing device is connected in cooperation with the gear sleeve 16 to realize the transmission of the engine power to the integrated transmission device 15.

[0011] Furthermore, the engine output torque testing device for an armored vehicle power assembly includes an output gear sleeve 4, a torque flange 6, a second positioning ring 9, a bearing 11, a second pressing device 13, an outer gear 14, and a first pressing plate 28. Among them, the output gear sleeve 4 is a two-stage cylindrical structure with a stepped cylindrical cavity inside. The right end face edge of the large-end cylinder of the output gear sleeve 4 is designed with a positioning stop 23.

[0012] The output gear 29 of the engine 1 is sleeved in the inner cavity of the small-end cylinder on the left side of the output gear sleeve 4. The first pressing plate 28 is a disc with a cylindrical protrusion structure in the center. It is placed in the right cavity of the output gear sleeve 4, and its cylindrical protrusion structure extends into the output gear 29, covering the bottom of the large-diameter inner cavity on the right side of the output gear sleeve 4 and the end face of the output gear 29. It is fixed on the output gear sleeve 4 by connecting bolt one 5 and connecting bolt two 26 to press the output gear sleeve 4. At the same time, a small hole is opened at the center of the first pressing plate 28, and the first pressing plate 28 and the axis of the engine output gear 29 are fixed on the same horizontal plane through the bolt 25, playing an axial positioning role. At this time, the axes of the engine output gear 29, the output gear sleeve 4, and the first pressing plate 28 are on the same horizontal plane.

[0013] The output gear sleeve 4 is a two-stage cylindrical structure with a stepped cylindrical cavity inside. The right end face edge of the large-end cylinder of the output gear sleeve 4 is designed with a positioning stop 23. The output gear 29 of the engine 1 is sleeved in the inner cavity of the small-end cylinder on the left side of the output gear sleeve 4.

[0014] The torque flange 6 is installed on the right side of the output gear sleeve 4. The positioning stop 23 on the right end face of the output gear sleeve 4 positions the torque flange 6. The first positioning ring 3 of the torque flange 6 is connected to the positioning circle at the engine output end through bolt one 2 and bolt two 27. A rectangular hole is opened on the support frame 24 of the torque flange to facilitate centering and positioning during the installation of the torque flange.

[0015] The second clamping device 13 is a stepped cylindrical structure, and a positioning stop 21 is provided on the edge of the left end face of the large end cylinder, and the bearing 11 is installed on the periphery of the small end cylinder of the second clamping device 13; the second clamping device 13 is installed on the right side of the torque flange 6, tightly connecting the torque flange 6 to the outer side of the output gear sleeve 4, and the power of the engine is transmitted to the output gear sleeve 4 through the external gear 29, and then the output torque of the engine is measured through the torque flange 6; the positioning stop 21 on the left end face of the second clamping device 13 positions the torque flange 6, and the three are connected by bolts three 8 and four 20 passing through the second clamping device 13, the torque flange 6, and the output gear sleeve 4 in sequence;

[0016] The bearing 11 is mounted on the periphery of the small end cylinder of the second clamping device 13. The bearing 11 is positioned and supported by the second positioning ring 9. One end of the second positioning ring 9 is connected to the first positioning ring 3 of the torque flange via bolts 5 7 and 6 22, and the other end is connected to the positioning circle of the integrated transmission device via bolts 7 10 and 8 19, thereby ensuring that the central axes of the engine 1, the torque flange 6, and the integrated transmission device 15 are in the same plane.

[0017] The right side of the second clamping device 13 is connected to the external gear 14 by bolt nine 12 and bolt ten 17. The positioning stop 18 on the left end face edge of the external gear 14 and the step surface of the second clamping device 13 prevent the bearing 11 from sliding axially. At the same time, the external gear 14 and the gear sleeve 16 are matched and connected to transmit power to the integrated transmission device 15.

[0018] Beneficial effects of the present invention:

[0019] The armored vehicle engine torque measurement device designed in this invention boasts a high level of integration. Without changing the engine output or the integrated transmission input, it can quickly measure engine output torque, significantly reducing testing costs. Furthermore, integrating the torque tester into the powertrain effectively improves powertrain centering accuracy, shortens the length of the test powertrain, and enhances powertrain testing safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : Schematic diagram of the engine before connection with the integrated transmission device;

[0021] Figure 2 : Schematic diagram of the engine connected to the integrated transmission device;

[0022] Figure 3 : Schematic diagram of the connection of the torque measurement device. DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below with reference to the accompanying drawings.

[0024] The design of the device of the present invention is mainly considered from five aspects: structural integration, power-train centering, strength of the integrated test device, test accuracy of the torque test device, and anti-loosening of the transition gear sleeve.

[0025] In terms of structural integration:

[0026] Integrated design of the torque flange with a small axial dimension in this device, greatly shortening the axial dimension of the torque test device.

[0027] In terms of power-train centering:

[0028] Integrated the positioning stop structure and the embedded circumferential bearing seat structure in this device, ensuring the coaxiality of the output shafts of the engine, the integrated transmission device, and the torque test device, and realizing the overall hoisting of the power train.

[0029] In terms of the strength of the torque test device after integration:

[0030] Due to the adoption of the circumferential bearing seat structure and by shortening the axial dimension of the test device, the structural strength of the torque test device is greatly improved.

[0031] In terms of the test accuracy of the torque test device:

[0032] Through the installation and fixation structure of the adjustable torque flange stator, the gap between the torque flange rotor and the stator can be adjusted within a certain range, realizing the adjustment of the test accuracy of the torque test device and improving the accuracy of the torque test device.

[0033] In terms of the anti-loosening of the transition gear sleeve:

[0034] Through the deformation design of the anti-loosening nut of the transition gear sleeve, it is ensured that the anti-loosening nut will not loosen, realizing the reliable positioning connection between the transmission output gear and the transition gear sleeve.

[0035] For the connection between the armored vehicle engine and the integrated transmission device, see Figure 1 .

[0036] The engine 1 outputs power through the output gear 29, the integrated transmission device inputs power through the gear sleeve 16, and the gear 29 is inserted into the input gear sleeve 16 to realize the transmission of the engine power to the integrated transmission device 15. Through the positioning circle one of the engine and the positioning circle two of the integrated transmission device, the centering and positioning of the engine and the integrated transmission device are realized. And they are connected and fixed by bolts, see Figure 2 .

[0037] The present invention adds a torque testing device between the engine and the integrated transmission device. Under the condition of ensuring the coaxiality of the engine, the torque testing device, and the integrated transmission device, the axial dimension of the torque testing device is shortened, the overall hoisting strength of the power device is ensured, the precision adjustment of the torque testing device is realized, and the test precision and the overall safety of the power assembly are ensured. For the installation schematic diagram of the power assembly after adding the torque testing device, see Figure 3 .

[0038] A power assembly engine output torque testing device provided by the present invention includes an output gear sleeve 4, a torque flange 6, a second positioning ring 9, a bearing 11, a second pressing device 13, an external gear 14, a torque flange support frame 24, and a first pressing plate 28. Among them, the output gear sleeve 4 is a two-stage cylindrical structure, with a stepped cylindrical cavity inside it, and a positioning stop 23 is designed at the edge of the right end face of the large-end cylinder of the output gear sleeve 4.

[0039] As Figure 3 shown, the engine 1 outputs power through an output gear 29. The output gear 29 is sleeved in the cavity of the small-end cylinder on the left side of the output gear sleeve 4. The first pressing plate 28 is a disc with a cylindrical protrusion structure in the center, placed in the large-diameter cavity on the right side of the output gear sleeve 4. Its cylindrical protrusion structure extends into the output gear 29, covering the bottom of the large-diameter inner cavity on the right side of the output gear sleeve 4 and the end face of the output gear 29 as a whole. It is fixed on the output gear sleeve 4 by connecting bolt one 5 and connecting bolt two 26 to press the output gear sleeve 4. At the same time, a small hole is opened at the center of the first pressing plate 28, and the axis of the first pressing plate 28 and the engine output gear 29 is fixed on the same horizontal plane through bolt 25, playing a role in axial positioning. At this time, the axes of the engine output gear 29, the output gear sleeve 4, and the first pressing plate 28 are on the same horizontal plane.

[0040] The torque flange 6 is installed on the right side of the output gear sleeve 4. The positioning stop 23 on the right end face of the output gear sleeve 4 positions the torque flange 6. The first positioning ring 3 of the torque flange 6 is connected to the positioning circle at the output end of the engine through bolt one 2 and bolt two 27. A rectangular hole is opened on the support frame 24 of the torque flange, which is convenient for centering and positioning when the torque flange is installed.

[0041] The second pressing device 13 is a stepped cylindrical structure, with a positioning stop 21 set at the edge of the left end face of its large-end cylinder. The second pressing device 13 is installed on the right side of the torque flange 6, tightly connecting the torque flange 6 to the outside of the output gear sleeve 4. The power of the engine is transmitted to the output gear sleeve 4 through the external gear 29, and then the output torque of the engine is measured through the torque flange 6. The positioning stop 21 on the left end face of the second pressing device 13 positions the torque flange 6, and the three are connected through bolt three 8 and bolt four 20 passing through the second pressing device 13, the torque flange 6, and the output gear sleeve 4 in sequence.

[0042] The bearing 11 is installed on the periphery of the small-end cylinder of the second pressing device 13. The bearing 11 is positioned and supported by the second positioning ring 9. One end of the second positioning ring 9 is connected to the first positioning ring 3 of the torque flange through bolt five 7 and bolt six 22, and the other end is connected to the positioning circle of the integrated transmission device through bolt seven 10 and bolt eight 19, thereby ensuring that the central axes of the engine 1, the torque flange 6 and the integrated transmission device 15 are on the same plane.

[0043] On the right side of the second pressing device 13, it is connected to the external gear 14 through bolt nine 12 and bolt ten 17. The positioning stop 18 on the edge of the left end face of the external gear 14 and the step face of the second pressing device 13 on its right side prevent the axial sliding of the bearing 11. At the same time, the external gear 14 is connected in cooperation with the gear sleeve 16 to transmit power to the integrated transmission device 15.

[0044] · Through multiple positionings, this device ensures that the axes of the engine 1, the integrated transmission device 15, the torque flange 6 and the intermediate connecting device are in the same plane. At the same time, the device is supported by the torque flange support frame 24 and the bearing support ring 9 to prevent the connecting device from having radial offset. At the same time, the output gear sleeve 4, the second pressing device 13 and the external gear 14 are all designed with positioning stops to prevent the torque guard 6, the bearing 11 and the intermediate connecting device from having axial displacement. Through the multi-layer positioning device, it accurately ensures that the axes of the engine 1, the integrated transmission device 15, the torque flange 6 and the intermediate connecting device are in the same plane, realizing the measurement of the engine output torque.

[0045] The design of this device is mainly considered from five aspects: structural integration, power-train alignment, strength of the integrated test device, test accuracy of the torque test device, and anti-loosening of the transition gear sleeve. The circumferential bearing seat structure is adopted, and by shortening the axial dimension of the test device, the structural strength of the torque test device is greatly improved. Through the adjustable installation and fixing structure of the torque flange stator, the gap between the torque flange rotor and the stator can be adjusted within a certain range, realizing the adjustment of the test accuracy of the torque test device and improving the accuracy of the torque test device.

[0046] Regarding the anti-loosening of the transition gear sleeve:

[0047] By deforming and designing the locknut of the transition gear sleeve, it is ensured that the locknut will not loosen, realizing the reliable positioning connection between the transmission output gear and the transition gear sleeve.

[0048] The engine output torque testing device of the present invention is the first testing device for the engine output torque of armored vehicles in China; the engine output torque testing device of armored vehicles adopts the cooperation of a positioning stop structure and a positioning ring structure, ensuring the coaxiality of the output shafts of the engine, the integrated transmission device, and the torque testing device; a small-sized torque flange is integrated in the middle of the engine and the integrated transmission device, realizing the accurate measurement of the engine output torque.

[0049] The armored vehicle engine torque measurement device designed by the present invention has a high degree of integration. Without changing the output end of the engine and the input end of the integrated transmission device, the measurement of the engine output torque can be quickly realized, greatly reducing the test cost. In addition, integrating the torque testing device into the powertrain effectively improves the centering accuracy of the powertrain, shortens the length of the powertrain for testing, and improves the safety of the powertrain test.

Claims

1. An armored vehicle powertrain engine output torque test device, characterized in that: The torque testing device is arranged between the engine and the integrated transmission device, the engine (1) outputs power through the output gear (29), the integrated transmission device inputs power through the gear sleeve (16), the output gear (29) is inserted into the output gear sleeve (4) of the torque testing device, and the outer gear (14) of the torque testing device is matched with the gear sleeve (16) to realize the transmission of the power of the engine to the integrated transmission device (15); The armored vehicle powertrain engine output torque testing device comprises an output gear sleeve (4), a torque flange (6), a second positioning ring (9), a bearing (11), a second pressing device (13), an external gear (14), and a first pressing plate (28); The output gear (29) of the engine (1) is sleeved in the left cavity of the output gear sleeve (4), and the first pressure plate (28) is a disk with a cylindrical protrusion structure at the center, which is placed in the right cavity of the output gear sleeve (4). It is fixed to the output gear sleeve (4) by bolts 1 (5) and 2 (26) to press the output gear sleeve (4). At the same time, a small hole is opened at the center of the first pressure plate (28). The first pressure plate (28) and the axis of the engine output gear (29) are fixed on the same horizontal plane by bolts (25), which plays the role of axial positioning. At this time, the axis of the engine output gear (29), the output gear sleeve (4) and the first pressure plate (28) are on the same horizontal plane; The torque flange (6) is installed on the right side of the output gear sleeve (4), and the right end surface positioning stop (23) of the output gear sleeve (4) positions the torque flange (6). The first positioning ring (3) of the torque flange (6) is connected to the positioning circle of the engine output end through bolts (2) and bolts (27). A rectangular hole is opened on the support frame (24) of the torque flange to facilitate centering and positioning of the torque flange when it is installed. The second clamping device (13) is installed on the right side of the torque flange (6), and the torque flange (6) is tightly connected to the outer side of the output gear sleeve (4). The power of the engine is transmitted to the output gear sleeve (4) through the output gear (29), and then the output torque of the engine is measured through the torque flange (6); the positioning stop 2 (21) on the left end face of the second clamping device (13) positions the torque flange (6), and the bolt 3 (8) and the bolt 4 (20) pass through the second clamping device (13), the torque flange (6), and the output gear sleeve (4) in sequence to connect the three; The bearing (11) is mounted on the periphery of the small end cylinder of the second pressing device (13), and the bearing (11) is positioned and supported by the second positioning ring (9). One end of the second positioning ring (9) is connected to the first positioning ring (3) of the torque flange through bolts five (7) and six (22), and the other end is connected to the positioning circle of the integrated transmission device through bolts seven (10) and eight (19), thereby ensuring that the central axes of the engine (1), the torque flange (6) and the integrated transmission device (15) are on the same plane; The right side of the second clamping device (13) is connected to the external gear (14) through bolt nine (12) and bolt ten (17). The axial sliding of the bearing (11) is prevented by the positioning stop three (18) on the edge of the left end face of the external gear (14) and the step surface of the second clamping device (13). At the same time, the external gear (14) and the gear sleeve (16) are matched and connected to transmit power to the integrated transmission device (15).

2. The armored vehicle powertrain engine output torque testing device according to claim 1, characterized in that: The output gear sleeve (4) is a two-step cylindrical structure with a stepped cylindrical cavity inside. A positioning stop (23) is designed on the right end edge of the large end cylinder of the output gear sleeve (4). The output gear 29 of the engine (1) is sleeved in the cavity inside the small end cylinder of the left side of the output gear sleeve (4).

3. The armored vehicle powertrain engine output torque testing device according to claim 1, characterized in that: The first pressing plate (28) is a disk with a cylindrical protrusion structure at the center. The cylindrical protrusion structure extends into the output gear (29) and covers the bottom of the large-diameter inner cavity on the right side of the output gear sleeve (4) and the end face of the output gear (29).

4. The armored vehicle powertrain engine output torque testing device according to claim 1, characterized in that: The second pressing device (13) is a stepped cylindrical structure, and a second positioning stop (21) is provided on the left end face edge of the large end cylinder. The bearing (11) is installed on the periphery of the small end cylinder of the second pressing device (13).

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