Tractor box body test system

Abstract

The invention relates to the field of agricultural machinery part testing, and discloses a tractor box body testing system which comprises a front end supporting structure, a rear end supporting structure and a vertical loading mechanism, the front end supporting structure is used for supporting the front end of a box body of a tractor box body, and the front end supporting structure comprises a load connecting piece connected to the front end of the box body; the rear end supporting structure is used for supporting the box body rear end of the tractor box body; and the vertical loading mechanism is used for applying vertical pressure to the load connecting piece so as to simulate the load state of the tractor box body. The tractor box body test system can verify the reliability of a tractor box body product, and is beneficial to solving the problems of long test period, high cost and the like of the tractor box body.

Description

Technical Field

[0001] The present application belongs to the technical field of agricultural machinery component testing, and specifically relates to a tractor box testing system. Background Art

[0002] The performance test of the tractor housing is an important part of the tractor R&D process, and is mainly used to verify the performance of the tractor housing under various working conditions. Most of the existing tractor housing test methods use field tests on field roads, and the reliability and durability of the tractor housing are evaluated by counting the running time of the whole machine under different test conditions. However, field road tests have problems such as long test cycles and high test costs. At the same time, due to the lack of tractor housing strength reliability test methods and equipment, it is difficult to evaluate the performance of the tractor housing through bench tests. Summary of the invention

[0003] In response to at least one of the above-mentioned defects or shortcomings of the prior art, the present application provides a tractor box test system that can verify the reliability of tractor box products and effectively solve the problems of long test cycle and high cost.

[0004] In order to achieve the above object, the present application provides a tractor box test system, comprising:

[0005] A front end support structure, used to support the front end of the box body of the tractor, the front end support structure comprising a load connection piece connected to the front end of the box body;

[0006] A rear end support structure for supporting the rear end of the tractor box; and

[0007] The vertical loading mechanism is used to apply vertical pressure to the load connecting member to simulate the load state of the tractor box.

[0008] In some embodiments, the front end support structure further includes an arm body and a movable base, wherein the movable base is movably disposed at the bottom of the arm body along the left-right direction of the tractor casing, and the load connector is disposed at the rear end of the arm body.

[0009] In some embodiments, the tractor box test system includes a four-wheel ground working condition, in which the movable base is located at the middle position of the support arm body along the left-right direction;

[0010] And / or, the tractor box test system includes a one-wheel suspended working condition, in which the movable base is located on the left and right sides of the middle of the arm body.

[0011] In some embodiments, the arm body includes a first arm and a second arm connected to each other, the first arm is extended along the front-to-rear direction of the tractor box, the second arm is extended along the left-right direction, the load connecting member is arranged at the rear end of the first arm, and the movable base is connected to the bottom of the second arm.

[0012] In some embodiments, the front end support structure further includes a first reinforcing rib fixedly connected between the first support arm and the second support arm;

[0013] And / or, the front end support structure further includes a second reinforcing rib fixedly connected between the first support arm and the load connecting member.

[0014] In some embodiments, the vertical loading mechanism includes a frame body and a loading cylinder, the frame body includes a crossbeam arranged across the top of the tractor box, and the loading cylinder is suspended from the crossbeam.

[0015] In some embodiments, the bottom end surface of the loading cylinder is formed as a cylinder bottom end plane, and the top end surface of the load connector is formed as a connector top end plane, and the connector top end plane is used to fit and contact with the cylinder bottom end plane.

[0016] In some embodiments, the rear end support structure includes two fixed supports, and the two fixed supports are respectively used to support two end shaft tubes at the rear end of the box body.

[0017] In some embodiments, the top end surface of the fixing support is formed as a V-shaped top end surface for contacting the peripheral wall of the end shaft tube.

[0018] In some embodiments, the load connecting member is a connecting disk, and the connecting disk is threadedly connected to the flange portion at the front end of the box.

[0019] Through the above technical scheme, when the tractor box test system of the present application is used for load testing, the tractor box can be supported by the front-end support structure and the rear-end support structure, and then the vertical loading mechanism is used to apply vertical pressure to the load connector connected to the tractor box, thereby simulating the load state of the tractor box when the tractor is loaded. By adjusting the pressure applied by the vertical loading mechanism, the fatigue life, maximum static strength and rigidity of each component of the tractor box under different load pressures can be measured, thereby effectively verifying the reliability of the product without the need for field road tests, effectively reducing the test cycle and test costs.

[0020] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0022] Figure 1 A schematic diagram of a tractor box test system in a specific embodiment of the present application;

[0023] Figure 2 for Figure 1 Top view of the tractor box test system, with the vertical loading mechanism omitted.

[0024] Description of Reference Numerals

[0025] 1 Tractor housing 2 Load connection

[0026] 3 Vertical loading mechanism 4 Arm body

[0027] 5 Movable base 6 First reinforcement rib

[0028] 7 Second reinforcement rib 8 Fixed support

[0029] 301 frame body 302 loading cylinder

[0030] 401 first arm 402 second arm

[0031] 801 V-shaped top surface DETAILED DESCRIPTION

[0032] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0033] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0034] like Figure 1 and Figure 2 As shown, an exemplary embodiment of the present application provides a tractor box test system, which includes a front-end support structure, a rear-end support structure, and a vertical loading mechanism 3. The front-end support structure is used to support the front end of the tractor box 1, and the front-end support structure includes a load connector 2 connected to the front end of the box. The rear-end support structure is used to support the rear end of the tractor box 1. The vertical loading mechanism 3 is used to apply vertical pressure to the load connector 2 to simulate the load state of the tractor box 1.

[0035] It can be seen that when the tractor box test system of the exemplary embodiment is used for load testing, the tractor box 1 can be supported by the front-end support structure and the rear-end support structure, and then the vertical loading mechanism 3 is used to apply vertical pressure to the load connector 2 connected to the tractor box 1, so as to simulate the load state of the tractor box 1 when the tractor is loaded. By adjusting the pressure applied by the vertical loading mechanism 3, the fatigue life, maximum static strength and rigidity of each component of the tractor box 1 under different load pressures can be measured. For example, the real-time pressure of the vertical loading mechanism 3 when the tractor box 1 is deformed can be obtained, thereby effectively verifying the reliability of the product. There is no need to conduct field road tests on the tractor box 1 after loading it, which effectively reduces the test cycle and test cost.

[0036] It should be noted that, in this embodiment, the tractor housing 1 may be a drive axle of the tractor, and in some other embodiments, the tractor housing may be other box-type structures in the tractor, such as a gearbox, etc., and the present application does not limit the specific structure of the tractor housing 1. Preferably, the front support structure and the rear support structure have the same height, so that when the front support structure and the rear support structure jointly support the tractor housing 1, the tractor housing 1 can be maintained in a horizontal position.

[0037] In an optional or preferred embodiment, the front end support structure further includes an arm body 4 and a movable base 5. The movable base 5 can be movably arranged at the bottom of the arm body 4 along the left-right direction of the tractor housing 1, and the load connector 2 is arranged at the rear end of the main body of the arm body 4. In this embodiment, the movable base 5 can be movably connected to the bottom of the arm body 4. For example, in some embodiments, the bottom of the arm body 4 is provided with a slideway arranged along the left-right direction, and the movable base 5 is provided with a slider that can form a sliding fit with the slideway or a pulley that forms a rolling fit; in other embodiments, the bottom of the arm body 4 is provided with a plurality of screw holes arranged in sequence along the left-right direction, and the movable base 5 is provided with a screw that can be selectively screwed with the plurality of screw holes. When the tractor housing 1 is a driving axle of the tractor, by adjusting the position of the movable base 5 in the left-right direction, the grounding condition of tractors with different wheelbases can be simulated, thereby improving the flexibility of the tractor housing test system of the present application, and being suitable for load tests of tractors with different wheelbases.

[0038] In fact, during the driving process of the tractor, affected by the terrain, there are generally two situations: one is that the four wheels of the tractor are on the ground at the same time, and the tractor is walking on flat ground; the other is that one of the two front wheels of the tractor is suspended in the air when the tractor is moving forward, and the tractor is walking on potholes or convex platforms. In order to obtain the load capacity of the tractor box in the above two situations and facilitate accurate simulation of the load, the tractor box test system of the present application can form a four-wheel grounding condition and a one-wheel suspended condition, thereby simulating the walking load state of the tractor with four wheels on the ground and one wheel suspended (referring to one of the front wheels being suspended).

[0039] Among them, under the four-wheel grounding condition, the movable base 5 of the tractor box test system moves to the middle position of the arm body 4 in the left-right direction. At this time, the movable base 5, the load connector 2 and the tractor box 1 can be on the same axis. Therefore, when the vertical loading mechanism 3 applies pressure to the load connector 2, the tractor box 1 can be stabilized as a whole on the front support structure and the rear support structure without tilting, thereby simulating the state of the tractor with four wheels on the ground.

[0040] In the one-wheel suspended condition, the movable base 5 is located on the left and right sides of the middle of the arm body 4. At this time, the movable base 5 is located on both sides of the central axis of the tractor box 1. When the vertical loading mechanism 3 applies pressure to the load connector 2, the arm body 4 and the tractor box 1 will tilt, thereby simulating the state of tilting when the tractor is suspended with one wheel.

[0041] The present application does not limit the specific structure of the arm body 4. In order to better simulate the state of the tractor box being loaded, in an optional or preferred embodiment, the arm body 4 includes a first arm 401 and a second arm 402 that intersect each other. Figure 2 As shown, the first arm 401 is extended and arranged along the front-to-back direction of the tractor housing 1, that is, along the central axis direction of the tractor housing 1, and the second arm 402 is extended and arranged along the left-right direction, so that the arm body 4 is a cross-shaped structure. The load connector 2 is arranged at the rear end of the first arm 401, and the movable base 5 is movably connected to the bottom of the second arm 402, so that it can move along the extension direction of the second arm 402 to simulate the use of tractors with different wheelbases. The arm body 4 of this embodiment is simply composed of the first arm 401 and the second arm 402, which can simplify the overall structure of the test system, thereby reducing the production and assembly difficulty and production cost of the test system. The first arm 401 and the second arm 402 can be fixedly connected by welding or screwing, etc., and this application does not limit this. The connection position can be selected at the center of the first arm 401, so as to simulate the above-mentioned four-wheel grounding condition and one-wheel suspended condition by moving the movable base 5.

[0042] In an optional or preferred embodiment, the front end support structure further includes a first reinforcing rib 6 fixedly connected between the first arm 401 and the second arm 402. By fixing the first reinforcing rib 6 to the first arm 401 and the second arm 402 by welding or the like, the lateral rigidity of the test system can be increased and the overall stability can be improved.

[0043] In an optional or preferred embodiment, the front end support structure further includes a second reinforcing rib 7 fixedly connected between the first arm 401 and the load connector 2. By fixing the receiving plate reinforcing rib 42 to the first arm 401 and the load connector 2 by welding or other methods, the longitudinal stiffness of the test system can be increased, and the overall stability can be further improved.

[0044] In an optional or preferred embodiment, the vertical loading mechanism 3 includes a frame body 301 and a loading cylinder 302. The frame body 301 includes a crossbeam arranged across the top of the tractor housing 1. The frame body 301 as a whole can be fixed on the ground. The loading cylinder 302 is arranged to hang down from the crossbeam. The bottom end of the loading cylinder 302 can be aligned with the top end of the load connector 2. Therefore, when performing a load test, the bottom end (i.e., the telescopic end) of the loading cylinder 302 can extend downward to apply vertical pressure to the load connector 2, so that the tractor housing 1 is subjected to vertical pressure, thereby simulating the state in which the tractor housing 1 is subjected to load pressure in actual use.

[0045] In this embodiment, the loading cylinder 302 may be a hydraulic cylinder, a pneumatic cylinder or an electric cylinder. If a hydraulic cylinder is used as the loading cylinder 302, the loading cylinder 302 may be driven by an external hydraulic system to move. The cylinder body of the loading cylinder 302 may be connected to the crossbeam of the frame body 301 by welding or screwing, and this application does not limit this.

[0046] Furthermore, the bottom end surface of the loading cylinder is formed as a bottom end plane of the cylinder, and the top end surface of the load connector 2 is formed as a top end plane of the connector that matches the bottom end plane of the cylinder. When the bottom end (i.e., the telescopic end) of the loading cylinder 302 is crimped to the top end plane of the connector, the top end plane of the connector is used to fit in contact with the bottom end plane of the cylinder, thereby improving the stability of the pressure and preventing damage to the device.

[0047] In an optional or preferred embodiment, the rear end support structure includes two fixed supports 8, and the two fixed supports 8 are respectively used to support the two end axle tubes located on the left and right sides of the rear end of the box body, so as to stably support the rear end of the box body of the tractor box body 1. Further, the top end surface of the fixed support 8 is formed as a V-shaped top end surface 801 for contacting the peripheral wall of the end axle tube. In other words, when the end axle tube is placed on the fixed support 8, the top surface of the fixed support 8 can limit the end axle tube through the V-shaped top end surface 801, thereby improving the stability of the tractor box body 1. In some other embodiments, the top surface of the fixed support 8 can also be formed as a U-shaped end surface, a rectangular end surface, etc., as long as it can match the peripheral wall of the end axle tube.

[0048] In an optional or preferred embodiment, Figure 1 As shown, the load connector 2 is a connector plate, which is threadedly connected to the flange portion at the front end of the box body, thereby improving the connection stability between the load connector 2 and the front end of the box body.

[0049] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0052] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A tractor box test system, characterized in that: include: A front end support structure, used for supporting the front end of the tractor box (1), the front end support structure comprising a load connection member (2) connected to the front end of the box; A rear end support structure, used for supporting the rear end of the tractor box (1); and A vertical loading mechanism (3) is used to apply vertical pressure to the load connecting member (2) to simulate the load state of the tractor box (1).

2. The tractor box test system according to claim 1, characterized in that: The front end support structure further comprises an arm body (4) and a movable base (5); the movable base (5) is arranged at the bottom of the arm body (4) so ​​as to be movable along the left-right direction of the tractor casing (1); and the load connecting member (2) is arranged at the rear end of the arm body (4).

3. The tractor box test system according to claim 2, characterized in that: The tractor box test system includes a four-wheel ground working condition, in which the movable base (5) is located at the middle position of the support arm body (4) in the left-right direction; And / or, the tractor box test system includes a one-wheel suspended working condition, in which the movable base (5) is located on the left and right sides of the middle of the support arm body (4).

4. The tractor box test system according to claim 2, characterized in that: The support arm body (4) comprises a first support arm (401) and a second support arm (402) which intersect each other, the first support arm (401) extending along the front-rear direction of the tractor housing (1), the second support arm (402) extending along the left-right direction, the load connecting member (2) being arranged at the rear end of the first support arm (401), and the movable base (5) being connected to the bottom of the second support arm (402).

5. The tractor box test system according to claim 4, characterized in that: The front end support structure further comprises a first reinforcing rib (6) fixedly connected between the first support arm (401) and the second support arm (402); And / or, the front end support structure further comprises a second reinforcing rib (7) fixedly connected between the first support arm (401) and the load connecting member (2).

6. The tractor box test system according to claim 1, characterized in that: The vertical loading mechanism (3) comprises a frame body (301) and a loading cylinder (302); the frame body (301) comprises a crossbeam arranged across the top of the tractor box (1); and the loading cylinder (302) is arranged to hang down from the crossbeam.

7. The tractor box test system according to claim 6, characterized in that: The bottom end surface of the loading cylinder (302) is formed as a cylinder bottom end plane, and the top end surface of the load connecting member (2) is formed as a connecting member top end plane, and the connecting member top end plane is used to fit in contact with the cylinder bottom end plane.

8. The tractor box test system according to claim 1, characterized in that: The rear end support structure comprises two fixed supports (8), and the two fixed supports (8) are respectively used to support the two end shaft tubes at the rear end of the box body.

9. The tractor box test system according to claim 8, characterized in that: The top end surface of the fixing support (8) is formed as a V-shaped top end surface (801) for contacting the peripheral wall of the end shaft tube.

10. The tractor box test system according to any one of claims 1 to 9, characterized in that: The load connecting piece (2) is a connecting disk, and the connecting disk is threadedly connected to the flange portion at the front end of the box body.

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