A new type of multi-functional drive bridge abutment test device

Abstract

The present invention provides a novel multi-functional driving bridge test bench device, which includes two oil injection sliding guide groove seats and two fatigue testing machines; force sensors are installed at the lower ends of the two fatigue testing machines, and two connecting loading blocks are connected to the two force sensors respectively, and the two connecting loading blocks are respectively connected to a bridge housing connecting support; a simulated sliding support and a limiting unit are installed on each of the two oil injection sliding guide groove seats; the two simulated sliding supports can reciprocate along the central connection line direction of the two oil injection sliding guide groove seats on the oil injection sliding guide groove seats where they are located, and their movement along the direction perpendicular to the central connection line direction of the two oil injection sliding guide groove seats can be restricted by the limiting unit; clamping units for clamping the wheel ends of the driving bridge housing are installed on the two simulated sliding supports. The novel multi-functional driving bridge test bench device of the present invention can meet the requirements of vertical stiffness, static strength and vertical fatigue durability tests of the automotive driving bridge housing.

Description

Technical Field

[0001] The present invention belongs to the field of automotive test equipment, and particularly relates to a new type of multi-functional drive axle bench test device. Background Art

[0002] The drive axle housing of an automobile is an important component in the chassis parts, and has functions such as load bearing, fixing, and protection. The vertical bending fatigue, stiffness, and strength tests of the drive axle housing are necessary inspection items for each vehicle manufacturer. In China, there are different recommended test standards for the drive rear axles of trucks with a load capacity of 8T and below and above 8T. Different test devices are used for different drive axles during the test, and due to the large friction force, the test cannot well simulate the actual working conditions, resulting in phenomena such as a long actual test period, waste of test tooling, and unclear manifestation of the test purpose. In order to solve the above various problems, test engineers urgently need a new type of multi-functional drive axle bench test device. Summary of the Invention

[0003] In view of this, the present invention aims to provide a new type of multi-functional drive axle bench test device to overcome the defects of the prior art, with a short test cycle, low use cost, meeting the test requirements, and being able to meet the needs of vertical stiffness and static strength tests of the automobile drive axle housing.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A new type of multi-functional drive axle bench test device includes two independently arranged oil injection sliding guide groove seats and two fatigue testing machines.

[0006] The two fatigue testing machines are arranged at a certain interval, and a force sensor is installed at the lower end of each of them. Both force sensors are connected to a connecting loading block, and the two connecting loading blocks are respectively connected to a housing connecting support for connecting the drive axle housing.

[0007] Both oil injection sliding guide groove seats are located below the housing connecting support and are arranged at a certain interval; a simulation sliding support and a limiting unit are installed on each of the two oil injection sliding guide groove seats; the two simulation sliding supports can reciprocate along the central connection line direction of the two oil injection sliding guide groove seats on the oil injection sliding guide groove seats where they are located, and their movement along the direction perpendicular to the central connection line direction of the two oil injection sliding guide groove seats can be restricted by the limiting unit; a clamping unit for clamping the wheel side of the drive axle housing is installed on each of the two simulation sliding supports.

[0008] Furthermore, the clamping unit includes an upper clamping sleeve and a lower clamping sleeve, the upper clamping sleeve and the lower clamping sleeve are arranged opposite to each other and are detachably connected; a first concave arc surface for clamping the wheel side of the drive axle housing is provided on the opposite sides of the upper clamping sleeve and the lower clamping sleeve.

[0009] Furthermore, the upper clamping sleeve and the lower clamping sleeve are fixedly connected by bolts, and the lower clamping sleeve is installed on the top of the simulated sliding support.

[0010] Furthermore, the simulated sliding support includes a first vertical plate and a cylindrical rod; the top of the first vertical plate is installed with a clamping unit, and the bottom is installed with a cylindrical rod; the cylindrical rod is arranged in the oil injection sliding guide groove seat and can reciprocate along the central connection line direction of the two oil injection sliding guide groove seats in the oil injection sliding guide groove seat.

[0011] Furthermore, a reinforcing rib is installed on the surface of the first vertical plate on the side away from the center of the connection line of the two oil injection sliding guide groove seats, and the reinforcing rib is located above the cylindrical rod.

[0012] Furthermore, the oil injection sliding guide groove seat includes a base body and two second vertical plates, and a groove for injecting lubricating oil is provided on the upper surface of the base body; a second vertical plate is installed on each side of the groove, and a downward second concave arc surface is provided on the upper surface of each of the two second vertical plates; the two second concave arc surfaces are symmetric about the center of the groove; both ends of the cylindrical rod are supported on the two second concave arc surfaces and can reciprocate along the central connection line direction of the two oil injection sliding guide groove seats within the second concave arc surface.

[0013] Furthermore, the distance from the bottom of the second concave arc surface to the top of the groove is 1 / 2 of the diameter of the cylindrical rod; the fatigue testing machine is a hydraulic fatigue testing machine, and the two fatigue testing machines and the two simulated sliding supports are all perpendicular to the drive axle housing clamped by the two clamping units.

[0014] Furthermore, the limiting unit is a third vertical plate installed above the two second vertical plates and having a third concave arc surface; the third concave arc surface is provided on the lower surface of the third vertical plate where it is located, and the third concave arc surface and the second concave arc surface on the corresponding second vertical plate together form a long through hole; the diameter of the long through hole is equivalent to the diameter of the cylindrical rod, the length of the long through hole is greater than or equal to 2 times the diameter of the cylindrical rod and less than the length of the second vertical plate; both ends of the cylindrical rod are inserted into the long through hole; the third vertical plate is located outside the first vertical plate.

[0015] Furthermore, the cylindrical rod and the long through hole are in clearance fit.

[0016] Furthermore, the surfaces of the cylindrical rod, the second concave arc surface, and the third concave arc surface are all smooth surfaces.

[0017] Furthermore, the force sensor is connected to the loading block through an adapter flange; the shape of the connecting loading block is U-shaped and its opening is downward.

[0018] Further, the axle housing connection support includes a flat plate and a fixing block; the fixing block is installed in the middle of the upper surface of the flat plate, and there is an installation hole at each of the four corners of the flat plate; the fixing block is clamped on one side of the opening of the connecting and loading block, and the two are connected by a pin.

[0019] Further, the distance between the two oil injection sliding guide groove seats is equivalent to the designed wheelbase of the drive axle.

[0020] Further, the distance between the two fatigue testing machines is equivalent to the center distance of the drive axle leaf spring.

[0021] Compared with the prior art, the novel multi-functional drive axle test bench device of the present invention has the following advantages:

[0022] 1. Because the structure is reasonably optimized and can bear a large force, it can meet the test requirements of various types of drive axle housings below 8T and above 8T.

[0023] 2. By designing the upper clamping sleeve and the lower clamping sleeve as a movable connection method (that is, a detachable connection method), when testing different drive axle housings, only the upper and lower clamping sleeves need to be replaced to be applicable to the installation of different drive axle housings, and it can be used repeatedly.

[0024] 3. When in use, lubricating oil can be added to the oil injection sliding guide groove seat to reduce the friction coefficient and effectively reduce the influence of the tooling on the test results.

[0025] 4. Due to its large bearing capacity and stable structure, this structure can meet the vertical bending fatigue test and vertical strength test of the drive axle housing. At the same time, because the friction coefficient between the structures is small, it can also meet the accurate displacement acquisition in the vertical bending stiffness test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0027] Figure 1 is a perspective view of the novel multi-functional drive axle test bench device according to an embodiment of the present invention from an angle;

[0028] Figure 2 is an exploded view of the novel multi-functional drive axle test bench device according to an embodiment of the present invention;

[0029] Figure 3 is a perspective view of the novel multi-functional drive axle test bench device according to an embodiment of the present invention from another angle;

[0030] Figure 4 isFigure 3 Enlarged view of part A

[0031] Figure 5 Side view of the new multi-functional driving bridge abutment test device described in the embodiment of the present invention

[0032] Explanation of reference numerals

[0033] 1 - Fatigue testing machine; 2 - Adapter flange; 3 - Connecting loading block; 4 - Bridge housing connecting support; 401 - Flat plate; 402 - Fixed block; 403 - Mounting hole; 5 - Force sensor; 6 - Clamping unit; 601 - Upper clamping sleeve; 602 - Lower clamping sleeve; 603 - First concave arc surface; 7 - Simulated sliding support; 701 - First vertical plate; 702 - Cylindrical rod; 703 - Reinforcing rib; 8 - Limiting unit; 801 - Third vertical plate; 802 - Third concave arc surface; 9 - Oil injection sliding guide groove seat; 901 - Base body; 902 - Second vertical plate; 903 - Groove; 904 - Second concave arc surface; 10 - Driving axle housing; 11 - Long strip through hole Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0037] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0038] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, a new type of multi-functional drive bridge abutment test device includes two independently arranged oil injection sliding guide seat 9 and two fatigue testing machines 1, where the fatigue testing machine 1 can adopt an existing hydraulic fatigue testing machine. The two fatigue testing machines 1 are arranged at a certain interval, and a force sensor 5 is installed at their lower ends. The two force sensors 5 are both connected to a connecting loading block 3, and the two connecting loading blocks 3 are respectively connected to a bridge housing connecting support 4. During use, the bridge housing connecting support 4 can be detachably and fixedly connected to both ends of the drive axle housing 10. The two oil injection sliding guide seats 9 are both located below the bridge housing connecting support 4 and are arranged at a certain interval. The interval distance should be suitable for supporting the drive axle housing 10. More specifically, the distance between the two oil injection sliding guide seats 9 is equivalent to the designed wheelbase of the drive axle. A simulation sliding support 7 and a limiting unit 8 are installed on each of the two oil injection sliding guide seats 9; the two simulation sliding supports 7 can reciprocate along the central connection line direction of the two oil injection sliding guide seats 9 on the oil injection sliding guide seats 9 where they are located, and their movement along the direction perpendicular to the central connection line direction of the two oil injection sliding guide seats 9 can be restricted by the limiting unit 8; a clamping unit 6 for clamping the wheel sides of the drive axle housing 10 is installed on each of the two simulation sliding supports 7; the two fatigue testing machines 1 and the two simulation sliding supports 7 are both arranged perpendicular to the drive axle housing 10 clamped by the two clamping units 6.

[0039] In the present invention, the structure of the clamping unit 6 is not limited as long as it can meet the purpose of clamping the wheel sides at both ends of the drive axle housing 10. However, as an example, for the clamping unit 6 in the present invention, an optional structural arrangement can be: As Figure 2-4As shown, the clamping unit 6 includes an upper clamping sleeve 601 and a lower clamping sleeve 602. The lower clamping sleeve 602 is installed on the top of the simulated sliding support 7. The upper clamping sleeve 601 and the lower clamping sleeve 602 are arranged oppositely and are detachably connected. More specifically, they can be detachably fixed by bolts and nuts. In order to better clamp the wheel ends at both ends of the drive axle housing 10, a first concave arc surface 603 for clamping the wheel ends of the drive axle housing 10 is provided on the opposite sides of the upper clamping sleeve 601 and the lower clamping sleeve 602. Preferably, the shape and size of the first concave arc surface 603 are equivalent to those of the wheel ends of the drive axle housing 10.

[0040] In the present invention, as Figure 2 and Figure 4 shown, the simulated sliding support 7 includes a first vertical plate 701 and a cylindrical rod 702. The top of the first vertical plate 701 is installed with the clamping unit 6, and the bottom is installed with the cylindrical rod 702. Specifically, the clamping unit 6 is detachably fixed to the top of the first vertical plate 701 by bolts, and the cylindrical rod is horizontally arranged, and its top is welded to the bottom of the first vertical plate. It should be noted that a card slot equivalent to the shape of the column body of the cylindrical rod 702 is preferably provided at the bottom of the first vertical plate, which can increase the welding contact area between the two and improve the connection stability between the two. In addition, in order to improve the strength of the first vertical plate 701, a reinforcing rib 703 is installed on the surface of the first vertical plate 701 on the side away from the center line of the connection of the two oil injection sliding guide seats 9. However, in order to avoid the influence of the reinforcing rib 703 on the cylindrical rod 702, the reinforcing rib 703 needs to be located above the cylindrical rod 702. The cylindrical rod 702 is arranged in the oil injection sliding guide seat 9 and can reciprocally slide in the oil injection sliding guide seat 9 along the direction of the center line connection of the two oil injection sliding guide seats 9.

[0041] In the present invention, the above-mentioned oil injection sliding guide seat 9 can adopt the following structure: As Figure 2 and Figure 4As shown in the figure, the oil injection sliding guide groove seat 9 includes a base body 901 and two second vertical plates 902. A groove 903 is provided on the upper surface of the base body 901. During use, lubricating oil can be injected into the groove 903 to reduce the friction coefficient and effectively reduce the influence of the tooling on the test results. Specifically, in order to improve the stability of the oil injection sliding guide groove seat 9, its base body can adopt a structure with a smaller upper part and a larger lower part. For example, the bottom is a plate with a relatively large area, and a plate with a relatively small area is integrally formed at the middle position of its upper surface. The groove 903 is opened from top to bottom on the upper surface of the plate with a relatively small area. At the same time, in order to install the simulation sliding support 7, a second vertical plate 902 is installed on each side in the groove 903. It is better that there is a gap between the outer sides of the two second vertical plates 902 and the inner wall of the groove, so that it is convenient for the two ends of the cylindrical rod 702 to extend out of the second vertical plate when placed, and the stability of its movement on the second vertical plate is improved. In order to improve the stability of the movement of the cylindrical rod 702 on the second vertical plate, preferably, a downward second concave arc surface 904 is provided on the upper surfaces of the two second vertical plates 902, and it is ensured that the two second concave arc surfaces 904 are centrosymmetric about the center of the groove 903; in this way, the two ends of the cylindrical rod 702 are supported on the two second concave arc surfaces 904, and it can reciprocate along the direction of the center line connecting the centers of the two oil injection sliding guide groove seats 9 within the second concave arc surface 904. It should be noted here that the surfaces of the cylindrical rod 702 and the second concave arc surface 904 and the subsequent third concave arc surface must be smooth surfaces, and the hardness of the contact surface is not less than HRC32.

[0042] At the same time, as an optional implementation manner of the present invention, in order to prevent the cylindrical rod 702 from sliding out of the second concave arc surface 904 when moving in the groove and further sliding out of the oil injection sliding guide groove seat 9, it is necessary to limit the relative installation positions of the second concave arc surface 904 and the cylindrical rod 702 to ensure that the cylindrical rod 702 does not slide out of the second concave arc surface 904. Here, it is necessary to ensure that the distance from the bottom of the second concave arc surface 904 to the top of the groove 903 is 1 / 2 of the diameter of the cylindrical rod 702.

[0043] In this invention, the function of the limiting unit 8 is to limit the movement of the simulated sliding support 7 in the direction perpendicular to the center connection line of the two oil injection sliding guide groove seats 9. The structure of the limiting unit 8 is not limited as long as it can achieve the above function. As an optional implementation mode of this invention, the limiting unit 8 can be a third vertical plate 801 installed above the two second vertical plates 902 and having a third concave arc surface 802. Specifically, the third concave arc surface 802 is provided on the lower surface of the third vertical plate 801 where it is located, and the third concave arc surface 802 and the second concave arc surface 904 on the corresponding second vertical plate 902 together form a long through hole 11; the diameter of the long through hole 11 is equivalent to the diameter of the cylindrical rod 702, the length of the long through hole 11 is greater than or equal to 2 times the diameter of the cylindrical rod 702 and less than the length of the second vertical plate 902, and the cylindrical rod 702 is in clearance fit with the long through hole. In this way, when the two ends of the cylindrical rod 702 are inserted into the long through hole 11, the movement of the cylindrical rod 702 can be limited to only move along the length direction of the long through hole, and the swaying in the height direction can be limited to the greatest extent. It should be noted that the length direction of the long through hole here is the length in the direction perpendicular to the center connection line of the two oil injection sliding guide groove seats 9. In order to play a better limiting role, the third vertical plate 801 needs to be arranged outside the first vertical plate 701. Regarding the installation of the third vertical plate and the second vertical plate, threaded holes can be provided at the four corners of the edges of the two vertical plates, and the two can be fixedly connected by bolts.

[0044] As an optional implementation mode of this invention, in terms of the structure of the loading block 3, its shape is U-shaped with the opening facing downwards. The force sensor 5 can be connected to the upper surface of the non-opening side of the loading block 3 through the adapter flange 2, while the opening side of the loading block 3 is connected to the axle housing connection support 4.

[0045] In this invention, as an optional implementation mode, the axle housing connection support 4 can adopt the following structure: the axle housing connection support 4 includes a flat plate 401 and a fixing block 402; the fixing block 402 is installed in the middle of the upper surface of the flat plate 401, and their connection relationship can be integrally formed or welded. In order to facilitate the connection between the axle housing connection support 4 and the drive axle housing during the test, mounting holes 403 are provided at the four corners of the flat plate 401. During use, the flat plate (i.e., the axle housing connection support 4) can be fixedly connected to the drive axle housing through bolts. The fixing block 402 is clamped on the opening side of the connecting loading block 3, and the two are connected by a pin.

[0046] Finally, it is also necessary to explain the distance between the two oil injection sliding guide seat 9s and the distance between the two fatigue testing machines 1. In the present invention, the distance between the two oil injection sliding guide seat 9s is equivalent to the designed wheelbase of the driving axle; for the distance between the two fatigue testing machines 1, if it involves the leaf spring structure of the driving axle, the distance between the two fatigue testing machines 1 is set according to the installation center distance of the driving axle leaf spring, and the specific design can be equivalent to the center distance of the driving axle leaf spring. If it does not involve the leaf spring structure of the driving axle, it shall be subject to the actual test installation distance requirements.

[0047] During use, first adjust the loading center line distance of the fatigue testing machine 1 to the required loading distance. The adapter flange 2 is installed on the force sensor 5 of the fatigue testing machine 1 through bolts. The connecting loading block 3 is fixed on the adapter flange 2 through the flange holes, and the other end is fixedly connected to the axle housing connecting support 4 through a pin. The lower clamping sleeve 602 and the simulated sliding support 7 are fixedly connected through counterbore holes with bolts. Then, the wheel side part of the driving axle housing 10 of the driving axle is clamped by the lower clamping sleeve 602 and the upper clamping sleeve 601, and fixed with four symmetric bolts. According to the wheelbase of the driving axle, adjust the oil injection sliding guide seat 9 to the accurate position, and fix the oil injection sliding guide seat 9 on the iron floor or other reliable positions. Then, assemble the simulated sliding support 7 and the fixed driving axle housing 10 together with the oil injection sliding guide seat 9, and limit and fix the simulated sliding support 7 with the limiting unit 8. Finally, adjust the installation position of the axle housing connecting support 4 and the driving axle housing 10 to connect and fix. During the above process, keep the fatigue testing machine 1 perpendicular to the center line of the driving axle housing 10, and ensure that its loading force center line is consistent with the center line of the simulated sliding support 7. Finally, add engine oil into the oil injection sliding guide seat 9 for lubrication.

[0048] So far, the test device is completely installed. According to the test requirements, the oil injection sliding guide seat 9 can be adjusted to achieve the deformation requirements of one-side sliding and one-side rolling (national standard recommended standard requirements) or both sides sliding simultaneously for the simulated sliding support 7. Specifically, according to the test requirements, adjust the relative positions of the oil injection sliding guide seat 9 and the simulated sliding support 7, such as:

[0049] 1. When testing according to the national recommended standard requirements, the simulated sliding support 7 needs to slide on one side and roll on the other side. At this time, the bottom rollers (i.e., the cylindrical rods 702) of the two groups of simulated sliding supports 7 can be respectively closely attached to the rightmost side of the long strip through holes 11 of the two groups of oil injection sliding guides 9 (as Figure 1 shown).

[0050] 2. If it is required to test the simulated sliding support 7 in the way of sliding and rolling simultaneously on both sides, respectively adjust the bottom rollers (i.e., the cylindrical rods 702) of the simulated sliding supports 7 on both sides to be respectively closely attached to the rightmost side and the leftmost side of the long strip through holes 11 of the oil injection sliding guide 9.

[0051] Therefore, a loading load is input through the fatigue testing machine 1 to meet the test requirements for the vertical bending static stiffness, strength, and fatigue test of the drive axle housing.

[0052] In summary, for the novel multi-functional drive axle test bench device of the present invention, the principle is simple and the function is powerful. It can achieve the vertical bending fatigue test, static strength test, and stiffness test requirements of the drive axle housing of vehicles with different load capacities. Moreover, it can effectively respond to tests at different speeds during the vertical bending fatigue test, solving the problem that the wear of the fatigue test device over a long time affects the test quality. It has a high degree of reuse. Only some components (the upper clamping sleeve and the lower clamping sleeve) need to be replaced to start the test in different tests, saving costs. It has a wide range of applications and can be realized for different test conditions in the national standard recommended standards and in research and development.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A new type of multi-functional drive abutment frame test device, characterized in that: It includes two independently arranged oil injection sliding guide seat (9) and two fatigue testing machines (1); The two fatigue testing machines (1) are arranged at a certain interval, and a force sensor (5) is installed at the lower end of each of them. Both of the two force sensors (5) are connected with a connecting loading block (3), and the two connecting loading blocks (3) are respectively connected with a bridge shell connecting support (4) for connecting the driving axle housing (10); The two oil injection sliding guide seats (9) are both located below the bridge shell connecting support (4) and are arranged at a certain interval; a simulated sliding support (7) and a limiting unit (8) are installed on each of the two oil injection sliding guide seats (9); the two simulated sliding supports (7) can reciprocate along the central connection line direction of the two oil injection sliding guide seats (9) on the oil injection sliding guide seat (9) where they are located, and their movement along the direction perpendicular to the central connection line direction of the two oil injection sliding guide seats (9) can be restricted by the limiting unit (8); a clamping unit (6) for clamping the wheel side of the driving axle housing (10) is installed on each of the two simulated sliding supports (7); The clamping unit (6) includes an upper clamping sleeve (601) and a lower clamping sleeve (602). The upper clamping sleeve (601) and the lower clamping sleeve (602) are arranged oppositely and are detachably connected; a first inner concave arc surface (603) for clamping the wheel side of the driving axle housing (10) is provided on the opposite sides of the upper clamping sleeve (601) and the lower clamping sleeve (602); The simulated sliding support (7) includes a first vertical plate (701) and a cylindrical rod (702); the clamping unit (6) is installed at the top of the first vertical plate (701), and the cylindrical rod (702) is installed at the bottom; the cylindrical rod (702) is arranged in the oil injection sliding guide seat (9) and can reciprocate along the central connection line direction of the two oil injection sliding guide seats (9) in the oil injection sliding guide seat (9); The oil injection sliding guide seat (9) includes a base body (901) and two second vertical plates (902). A groove (903) for injecting lubricating oil is provided on the upper surface of the base body (901); a second vertical plate (902) is installed on each side in the groove (903), and a downward second inner concave arc surface (904) is provided on the upper surface of each of the two second vertical plates (902); the two second inner concave arc surfaces (904) are centrosymmetric about the center of the groove (903); both ends of the cylindrical rod (702) are supported on the two second inner concave arc surfaces (904) and can reciprocate along the central connection line direction of the two oil injection sliding guide seats (9) in the second inner concave arc surface (904); The limiting unit (8) is a third vertical plate (801) installed above two second vertical plates (902) and having a third concave arc surface (802); the third concave arc surface (802) is provided on the lower surface of the third vertical plate (801) where it is located, and the third concave arc surface (802) and the second concave arc surface (904) on the corresponding second vertical plate (902) together form a long through hole (11); the diameter of the long through hole (11) is equivalent to the diameter of the cylindrical rod (702), the length of the long through hole (11) is greater than or equal to 2 times the diameter of the cylindrical rod (702), and less than the length of the second vertical plate (902); both ends of the cylindrical rod (702) are inserted into the long through hole (11); the third vertical plate (801) is located outside the first vertical plate (701). And / or, the cylindrical rod (702) and the long through hole (11) are in clearance fit. And / or, the surfaces of the cylindrical rod (702), the second concave arc surface (904), and the third concave arc surface (802) are all smooth surfaces. When it is necessary to slide on one side and roll on the other side of the simulated sliding support (7), the cylindrical rods (702) of the two groups of simulated sliding supports (7) can be respectively closely attached to the rightmost side of the long through holes (11) of the two groups of oil injection sliding guide groove seats (9). When testing in the way of simultaneous sliding and rolling on both sides of the simulated sliding support (7), the cylindrical rods (702) of the simulated sliding supports (7) on both sides are respectively adjusted to be closely attached to the rightmost side and the leftmost side of the long through holes (11) of the oil injection sliding guide groove seat (9).

2. The novel multi-functional driving abutment frame test device according to claim 1, characterized in that: The upper clamping sleeve (601) and the lower clamping sleeve (602) are fixedly connected by bolts, and the lower clamping sleeve (602) is installed on the top of the simulated sliding support (7).

3. The novel multi-functional driving abutment frame test device according to claim 1, characterized in that: A reinforcing rib (703) is installed on the surface of the first vertical plate (701) on the side far from the center of the connection line of the two oil injection sliding guide groove seats (9), and the reinforcing rib (703) is located above the cylindrical rod (702).

4. The novel multi-functional driving abutment frame test device according to claim 1, characterized in that: The distance from the bottom of the second concave arc surface (904) to the top of the groove (903) is 1 / 2 of the diameter of the cylindrical rod (702); the fatigue testing machine (1) is a hydraulic fatigue testing machine, and the two fatigue testing machines (1) and the two simulated sliding supports (7) are all arranged perpendicular to the driving axle housing (10) clamped by the two clamping units (6).

5. The novel multi-functional driving abutment frame test device according to claim 1, characterized in that: The force sensor (5) is connected to the connecting loading block (3) through a transfer flange (2); the connecting loading block (3) is U-shaped with its opening facing downwards. And / or, the distance between the two oil injection sliding guide groove seats (9) is equivalent to the designed wheelbase of the driving axle. And / or, the distance between the two fatigue testing machines (1) is equivalent to the center distance of the driving axle leaf springs.

6. The novel multi-functional driving abutment frame test device according to claim 5, characterized in that: The axle housing connection support (4) includes a flat plate (401) and a fixing block (402); the fixing block (402) is installed in the middle of the upper surface of the flat plate (401), and mounting holes (403) are provided at the four corners of the flat plate (401); the fixing block (402) is clamped on one side of the opening of the connecting loading block (3), and the two are connected by a pin.

Images