Casting durability test device

Abstract

The utility model discloses a casting durability test device which comprises a base body, a posture adjusting assembly, a fastening assembly and a power assembly, the posture adjusting assembly is installed on the base body and comprises a supporting face matched with at least part of the lower surface of a casting, and the supporting face is used for making contact with the lower surface of the casting in an attached mode. The fastening assembly is used for fastening the casting on the supporting surface. The power assembly is installed on the base body. The power assembly can be in driving connection with a to-be-tested fixing point on the casting so as to pull the to-be-tested fixing point. The casting durability test device provided by the utility model has the advantage of high test accuracy on the fixed point to be tested of the casting.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile casting test devices, in particular to a casting durability test device. Background Art

[0002] The parts of the car frame that contain the seat belt fixing points and the seat fixing points are usually die-cast in one piece to form a large casting with a relatively large volume. The frame containing the large casting has the advantages of high integration, low cost, high efficiency and light weight. For larger castings, it is usually necessary to perform strength tests on some of the fixing points thereon to ensure that the die-cast castings meet the strength requirements. However, the casting durability test device in the related art usually first uses a clamp to clamp and fix the outer periphery of the casting, and then uses a power component to pull the fixed points to be tested of the casting to complete the strength test of the fixed points on the casting. During the test, there is a problem that the posture of the casting cannot be guaranteed to be consistent with the posture of the casting in the actual driving environment. As a result, under the interference of the weight of the casting itself and the weight of the components such as the seats thereon, there is a defect that the strength test of the fixed points of the casting is poor in accuracy. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a casting durability test device, which has the advantage of high test accuracy for the fixed points to be tested of the casting.

[0005] The casting durability testing device of the embodiment of the utility model includes a base, a posture adjustment component, a fastening component and a power component, wherein the posture adjustment component is installed on the base and includes a supporting surface matching at least a portion of the lower surface of the casting, and the supporting surface is used to fit in contact with the lower surface of the casting; the fastening component is used to fasten the casting on the supporting surface, and the power component is installed on the base, and the power component can be driven and connected to the fixed point to be tested on the casting to pull the fixed point to be tested.

[0006] According to the casting durability test device of the embodiment of the utility model, before fixing the casting, the lower surface of the casting is firstly brought into contact with the support surface of the posture adjustment assembly to achieve the positioning of the casting and ensure that the posture of the casting is consistent with the posture of the casting in the actual driving environment, and then the casting is fixed on the support surface by the fastening assembly, and finally the power assembly is connected to the fixed point to be tested on the casting to achieve the strength test of the fixed point to be tested. Among them, the support surface of the posture adjustment assembly corrects the posture of the casting to ensure that the basic parameters of the casting during the test are roughly the same as the basic parameters of the casting in the actual driving environment, so that the data obtained when the power assembly pulls the fixed point to be tested is more accurate, and the test accuracy of the fixed point to be tested of the casting is higher.

[0007] In some embodiments, the posture adjustment assembly includes a plurality of discretely arranged support blocks, each of the support blocks including the support surface matching a portion of the lower surface of the casting.

[0008] In some embodiments, the number of the support blocks is greater than or equal to six;

[0009] and / or, at least two of the support surfaces have different heights;

[0010] And / or, at least one of the support surfaces is an irregular surface.

[0011] In some embodiments, the casting includes a plurality of mounting points for connecting to vehicle components, the plurality of mounting points are discretely arranged, and the support surface on each support block is in close contact with the lower surface where different mounting points are located;

[0012] The fastening components correspond to the supporting blocks one by one, and the fastening components are connected to the corresponding supporting blocks.

[0013] In some embodiments, the fastening assembly includes a clamp block and a threaded member, the clamp block is provided with a first mounting hole, the support block is provided with a second mounting hole, the clamp block is connected to the corresponding support block via a threaded member passing through the first mounting hole and the second mounting hole, and the mounting point is clamped between the clamp block and the support block.

[0014] In some embodiments, the power assembly includes a column, a gantry and an actuating cylinder, the lower end of the column is connected to the base; the gantry is connected to the upper end of the column; the cylinder body of the actuating cylinder is hinged to the gantry, and the piston rod of the actuating cylinder is used to be hinged to the fixed point to be tested on the casting.

[0015] In some embodiments, the fixing point to be tested includes a plurality of third mounting holes;

[0016] The power assembly also includes an intermediate plate, on which are provided a plurality of fourth mounting holes corresponding one to one with the third mounting holes, and the intermediate plate is suitable for being connected to the casting via a first fastener passing through the third mounting hole and the corresponding fourth mounting hole, and the intermediate plate is hinged to the piston rod of the actuator cylinder.

[0017] In some embodiments, the column comprises a telescopic cylinder, a cylinder body of the telescopic cylinder is mounted on the base, and a piston rod of the telescopic cylinder is connected to the gantry;

[0018] Alternatively, the column includes a lower column, an upper column and a second fastener, the lower end of the lower column is connected to the base, the upper end of the upper column is connected to the gantry, the upper column and the lower column are slidably connected along the height direction, and the second fastener can fasten the upper column and the lower column when the upper column slides to a set position or any position relative to the lower column.

[0019] In some embodiments, the casting includes a plurality of the fixed points to be tested arranged along a first direction;

[0020] The gantry frame includes a frame body, a ball joint seat and a third fastener, the frame body is connected to the upper end of the column, the ball joint seat is hinged to the cylinder body of the actuator cylinder, the frame body includes a plurality of mounting parts arranged at intervals along the first direction, and the ball joint seat can be detachably connected to any one of the mounting parts through the third fastener.

[0021] In some embodiments, the casting includes a plurality of the fixed points to be tested arranged along a first direction;

[0022] The gantry frame includes a frame body, a ball joint seat and a third fastener. The frame body is connected to the upper end of the column, the ball joint seat is hinged to the cylinder body of the actuator cylinder, the ball joint seat is slidably connected to the frame body along the first direction, and the third fastener can fasten the ball joint seat and the frame body when the ball joint seat slides to any position relative to the frame body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view of a casting durability testing device and a casting according to an embodiment of the utility model.

[0024] Figure 2 It is a side view of a casting durability testing device and a casting according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] 1. Base; 2. Support block; 3. Clamp block; 4. Threaded part; 5. Column; 6. Gantry; 61. Frame; 62. Ball joint seat; 7. Actuator; 8. Middle plate; 9. Casting. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0028] Combine the following Figure 1 and Figure 2 A casting durability testing device according to an embodiment of the utility model is described.

[0029] The casting durability test device of the embodiment of the utility model comprises a base 1, a posture adjustment component, a fastening component and a power component. The posture adjustment component is mounted on the base 1 and comprises a support surface matching at least a portion of the lower surface of the casting 9, and the support surface is used to fit and contact with the lower surface of the casting 9. The fastening component is used to fasten the casting 9 to the support surface. The power component is mounted on the base 1, and the power component can be driven and connected to the fixed point to be tested on the casting 9 to pull the fixed point to be tested.

[0030] According to the casting durability test device of the embodiment of the utility model, before fixing the casting 9, the lower surface of the casting 9 is firstly brought into contact with the support surface of the posture adjustment assembly to achieve the positioning of the casting 9 and ensure that the posture of the casting 9 is consistent with the posture of the casting 9 in the actual driving environment, and then the casting 9 is fixed on the support surface by the fastening assembly, and finally the power assembly is connected to the fixed point to be tested on the casting 9 to achieve the strength test of the fixed point to be tested. Among them, the support surface of the posture adjustment assembly corrects the posture of the casting 9 to ensure that the basic parameters of the casting 9 during the test are substantially the same as the basic parameters of the casting 9 in the actual driving environment, so that the data obtained when the power assembly pulls the fixed point to be tested is more accurate, and the test accuracy of the fixed point to be tested of the casting 9 is higher.

[0031] It should be noted that the base 1 is an iron plate, and the above-mentioned fixed points to be tested are the seat belt fixing points and the seat fixing points. After the casting 9 is fixed on the supporting surface of the posture adjustment assembly, other components originally installed on the casting 9, such as seats, can also be placed on the casting 9 to better simulate the actual stress environment of the casting 9, thereby further ensuring the test accuracy of the casting durability test device on the fixed points to be tested of the casting 9.

[0032] In some embodiments, Figure 2 As shown, the posture adjustment assembly includes a plurality of discretely arranged support blocks 2 , each of which includes a support surface that matches a portion of the lower surface of the casting 9 .

[0033] At this time, the multiple support blocks 2 arranged discretely have a wider distribution area, so as to more stably support and position the casting 9. At the same time, compared with designing the posture adjustment component as an integrated structure, the multiple support blocks 2 arranged in segments can support the casting 9 while further reducing the total weight and production cost of the posture adjustment component.

[0034] In some embodiments, the number of the support blocks 2 is greater than or equal to six, that is, six support surfaces formed by at least six support blocks 2 support the casting 9, and the support stability of the casting 9 is higher.

[0035] Specifically, Figure 1As shown, the number of support blocks 2 is eight, among which three support blocks 2 support the rear anti-collision beam in the casting 9, two support blocks 2 support the fixing points of the front vehicle body battery pack of the casting 9, and three support blocks 2 support the fixing points in the middle of the casting 9.

[0036] and / or, if Figure 2 As shown, at least two support surfaces have different heights, that is, the support surfaces of the plurality of support blocks 2 can fit and contact the lower surfaces of the casting 9 at different heights, thereby achieving support for the casting 9 and making the arrangement of the support blocks 2 more flexible.

[0037] And / or, at least one supporting surface is an irregular surface. In this case, the lower surface of the casting 9 that is in contact with the supporting surface is also an irregular surface, and the contact between the two surfaces realizes the positioning of the posture of the casting 9, and the reliability of the limit of the casting 9 in the horizontal direction is higher.

[0038] In some embodiments, the casting 9 includes a plurality of mounting points for connecting to vehicle components, the plurality of mounting points are discretely arranged, and the support surface on each support block 2 is in contact with the lower surface where the different mounting points are located. The fastening components correspond to the support blocks 2 one by one, and the fastening components are connected to the corresponding support blocks 2.

[0039] That is, the fastening assembly presses multiple installation points of the casting 9 onto the supporting surface of the corresponding support block 2. At this time, the support block 2 connected to the casting 9 is equivalent to the vehicle component connected to the casting 9 on the actual vehicle, that is, the full constraint position of the support block 2 and the fastening assembly on the casting 9 is consistent with the full constraint position of the whole vehicle on the casting 9, thereby further improving the test accuracy of the fixed points to be tested on the casting 9.

[0040] Specifically, Figure 1 As shown, taking the case where there are multiple fixed points to be tested and arranged along the first direction as an example, multiple fastening components are divided into three groups arranged at intervals along the second direction, the second direction is perpendicular to the first direction, and the middle group of fastening components includes three fastening components arranged at intervals along the first direction.

[0041] In some embodiments, Figure 1 As shown, the fastening assembly includes a clamp block 3 and a threaded member 4, the clamp block 3 is provided with a first mounting hole, the support block 2 is provided with a second mounting hole, the clamp block 3 is connected to the corresponding support block 2 by the threaded member 4 passing through the first mounting hole and the second mounting hole, and the mounting point is clamped between the clamp block 3 and the support block 2.

[0042] By connecting the clamp block 3 to the support block 2 through the screw member 4, the mounting point can be clamped between the clamp block 3 and the support block 2 to achieve the fixation of the casting 9. The casting 9 is fixed on the support block 2 conveniently and reliably.

[0043] Specifically, Figure 2As shown, the threaded member 4 includes a bolt and a nut. The bolt passes through the second mounting hole and the first mounting hole and is threadably matched with the nut.

[0044] In some embodiments, Figure 1 As shown, the power assembly includes a column 5, a gantry 6 and an actuator 7. The lower end of the column 5 is connected to the base 1. The gantry 6 is connected to the upper end of the column 5. The cylinder body of the actuator 7 is hinged to the gantry 6, and the piston rod of the actuator 7 is used to be hinged to the fixed point to be tested on the casting 9.

[0045] The actuator 7 is also a servo actuator or a servo electric cylinder, which can accurately detect the displacement and force information of the piston rod of the actuator 7 when pulling the fixed point to be tested. The cylinder body and piston rod of the actuator 7 are respectively hinged to the gantry 6 and the fixed point to be tested, so as to avoid the piston rod of the actuator 7 being radially deflected relative to the cylinder body when the actuator 7 pulls the fixed point to be tested to deform, thereby affecting the test result.

[0046] In some embodiments, Figure 1 As shown, the fixed point to be tested includes a plurality of third mounting holes. The power assembly also includes an intermediate plate 8, on which a plurality of fourth mounting holes corresponding to the third mounting holes are provided, and the intermediate plate 8 is suitable for being connected to the casting 9 by a first fastener passing through the third mounting holes and the corresponding fourth mounting holes, and the intermediate plate 8 is hinged to the piston rod of the actuator 7.

[0047] The middle plate 8 is equivalent to a seat or a safety belt fixed at the fixed point to be tested. The actuator 7 directly pulls the middle plate 8, which is equivalent to directly pulling the seat or the safety belt, thereby further improving the testing accuracy of the casting durability test device on the fixed point to be tested of the casting 9.

[0048] Specifically, the first fastener is a threaded member 4 , and different fixing points to be tested correspond to different intermediate plates 8 .

[0049] In some embodiments, the column 5 includes a telescopic cylinder, the cylinder body of the telescopic cylinder is installed on the base 1, and the piston rod of the telescopic cylinder is connected to the gantry 6. That is, the height of the column 5 is adjustable, that is, the height of the actuator 7 on the gantry 6 is adjustable, thereby accurately simulating the force direction of the seat and seat belt in the actual vehicle, thereby obtaining more comprehensive data and more accurate test results. Moreover, the telescopic cylinder can automatically adjust the height under the drive of the hydraulic system, and the test automation of the casting durability test device is higher.

[0050] Alternatively, the column 5 includes a lower column, an upper column and a second fastener, the lower end of the lower column is connected to the base 1, the upper end of the upper column is connected to the gantry 6, the upper column and the lower column are slidably connected in the height direction, and the second fastener can fasten the upper column and the lower column when the upper column slides to a set position or an arbitrary position relative to the lower column. In this way, the height of the actuator 7 on the gantry 6 can also be adjusted, thereby accurately simulating the force direction of the seat and the safety belt in the actual vehicle, so that the data obtained is more comprehensive and the test results are more accurate.

[0051] In some embodiments, Figure 1 As shown, the casting 9 includes a plurality of fixed points to be tested arranged along the first direction. The gantry 6 includes a frame body 61, a ball joint seat 62 and a third fastener, the frame body 61 is connected to the upper end of the column 5, the ball joint seat 62 is hinged to the cylinder body of the actuator 7, the frame body 61 includes a plurality of mounting parts arranged at intervals along the first direction, and the ball joint seat 62 can be detachably connected to any mounting part through the third fastener.

[0052] That is, the position of the actuator 7 in the first direction is adjustable, and one actuator 7 can realize the durability test of different fixed points to be tested in multiple times. There is no need to set actuators 7 equal to the number of fixed points to be tested, and the manufacturing cost of the casting durability test device is lower.

[0053] Specifically, there are two mounting parts, and the actuator 7 can be fixed on any mounting part through the ball joint seat 62. Meanwhile, the third fastener is a threaded member 4, and the ball joint seat 62 is threadedly connected to the frame body 61 through the threaded member 4.

[0054] In some embodiments, the casting 9 includes a plurality of fixed points to be tested arranged along a first direction. The gantry 6 includes a frame 61, a ball joint seat 62 and a third fastener, the frame 61 is connected to the upper end of the column 5, the ball joint seat 62 is hinged to the cylinder body of the actuator 7, the ball joint seat 62 is slidably connected to the frame 61 along the first direction, and the third fastener can fasten the ball joint seat 62 and the frame 61 when the ball joint seat 62 slides to any position relative to the frame 61.

[0055] Thus, the position of the actuator 7 in the first direction can be adjusted, and one actuator 7 can perform durability tests on different fixed points to be tested in multiple times. There is no need to set actuators 7 equal to the number of fixed points to be tested, and the manufacturing cost of the casting durability test device is lower. Moreover, the actuator 7 can be fixed at any position of the gantry 6 in the first direction, so that the force directions of seats and seat belts on more real vehicles can be simulated, so that the test accuracy of the fixed points to be tested on the casting 9 is higher and more comprehensive.

[0056] It should be noted that the specific test process of the casting durability test device of this embodiment is as follows:

[0057] 1. First, perform simulation loading through the simulation system to obtain the basic strength information of the casting 9.

[0058] 2. According to the test requirements, before the test, the base 1 is first built, each support block 2 is fixed in the frame according to the coordinates, and the casting 9 is placed on each support block 2 to ensure the posture of the sample.

[0059] 3. Install the fastening components in all directions, finally arrange the actuator 7 and adjust the posture of the actuator 7, and lock the fastening components.

[0060] 4. The actuating cylinder 7 adopts a single-side loading method. The actuating cylinder 7 controls the loading at a constant speed. When it is detected that the cylinder load is greatly reduced, that is, the casting 9 has obvious fracture damage, the loading is stopped immediately.

[0061] 5. Record the displacement and corresponding load value during the test, and finally output the force-displacement curve.

[0062] 6. Adjust the loading position of the actuator 7, load another fixed point to be tested and repeat the above steps.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In addition, 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, 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 one; 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 the present invention can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics 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.

[0068] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A casting durability test device, characterized in that: include: matrix; A posture adjustment assembly, the posture adjustment assembly is mounted on the base and includes a support surface matching at least a portion of the lower surface of the casting, the support surface being used for being in close contact with the lower surface of the casting; A fastening assembly, the fastening assembly being used to fasten the casting to the support surface; and A power assembly is installed on the base, and the power assembly can be driven and connected to the fixed point to be tested on the casting to pull the fixed point to be tested.

2. The casting durability testing device according to claim 1, characterized in that: The posture adjustment assembly includes a plurality of discretely arranged support blocks, each of which includes the support surface matching a portion of the lower surface of the casting.

3. The casting durability testing device according to claim 2, characterized in that: The number of the support blocks is greater than or equal to six; and / or, at least two of the support surfaces have different heights; And / or, at least one of the support surfaces is an irregular surface.

4. The casting durability testing device according to claim 2, characterized in that: The casting comprises a plurality of mounting points for connecting with vehicle components, the plurality of mounting points are discretely arranged, and the support surface on each of the support blocks is in close contact with the lower surface where different mounting points are located; The fastening components correspond to the supporting blocks one by one, and the fastening components are connected to the corresponding supporting blocks.

5. The casting durability testing device according to claim 4, characterized in that: The fastening assembly includes a clamping block and a threaded member, the clamping block is provided with a first mounting hole, the supporting block is provided with a second mounting hole, the clamping block is connected to the corresponding supporting block via a threaded member passing through the first mounting hole and the second mounting hole, and the mounting point is clamped between the clamping block and the supporting block.

6. The casting durability testing device according to claim 1, characterized in that: The power assembly comprises: A column, the lower end of which is connected to the base; A gantry, the gantry connected to the upper end of the column; An actuating cylinder, a cylinder body of the actuating cylinder is hinged to the gantry, and a piston rod of the actuating cylinder is used for being hinged to a fixed point to be tested on the casting.

7. The casting durability testing device according to claim 6, characterized in that: The fixed point to be tested includes a plurality of third mounting holes; The power assembly also includes an intermediate plate, on which are provided a plurality of fourth mounting holes corresponding one to one with the third mounting holes, and the intermediate plate is suitable for being connected to the casting via a first fastener passing through the third mounting hole and the corresponding fourth mounting hole, and the intermediate plate is hinged to the piston rod of the actuator cylinder.

8. The casting durability testing device according to claim 6, characterized in that: The column comprises a telescopic cylinder, a cylinder body of the telescopic cylinder is mounted on the base, and a piston rod of the telescopic cylinder is connected to the gantry; Alternatively, the column includes a lower column, an upper column and a second fastener, the lower end of the lower column is connected to the base, the upper end of the upper column is connected to the gantry, the upper column and the lower column are slidably connected along the height direction, and the second fastener can fasten the upper column and the lower column when the upper column slides to a set position or any position relative to the lower column.

9. The casting durability testing device according to claim 6, characterized in that: The casting comprises a plurality of the fixing points to be tested arranged along a first direction; The gantry frame includes a frame body, a ball joint seat and a third fastener, the frame body is connected to the upper end of the column, the ball joint seat is hinged to the cylinder body of the actuator cylinder, the frame body includes a plurality of mounting parts arranged at intervals along the first direction, and the ball joint seat can be detachably connected to any one of the mounting parts through the third fastener.

10. The casting durability testing device according to claim 6, characterized in that: The casting comprises a plurality of the fixing points to be tested arranged along a first direction; The gantry frame includes a frame body, a ball joint seat and a third fastener. The frame body is connected to the upper end of the column, the ball joint seat is hinged to the cylinder body of the actuator cylinder, the ball joint seat is slidably connected to the frame body along the first direction, and the third fastener can fasten the ball joint seat and the frame body when the ball joint seat slides to any position relative to the frame body.

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