Testing tool for doorsill beam

Abstract

The utility model provides a testing tool for a doorsill beam, and relates to the technical field of testing tools, the testing tool for the doorsill beam comprises a base station and two supports arranged on the base station, each support is respectively provided with a first connecting part, the base station is provided with a plurality of second connecting parts, and the second connecting parts are arranged along the length direction of the base station. The number of the second connecting parts is larger than that of the first connecting parts, and the first connecting parts are used for being connected with the second connecting parts. Each support is provided with a first limiting mechanism and a second limiting mechanism, the first limiting mechanism is used for abutting against the doorsill beam in the horizontal direction, and the second limiting mechanism is used for abutting against the doorsill beam in the vertical direction. Compared with the prior art, the testing tool of the threshold beam can effectively prevent abnormal posture changes of the threshold beam in the lateral loading process, such as overturning and two-end tilting, so that the accuracy of test data is ensured, and the safety and the stability of the whole testing process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test frock technical field, specifically, relate to a threshold beam's test frock. BACKGROUND

[0002] In the automobile design, the crossbeam below the door is an important structural component, it not only plays a vital role to the overall rigidity and safety of the vehicle, and also occupies a place in the appearance design of the vehicle. This component is usually called threshold beam, or simply called threshold.

[0003] The threshold beam is a part of the vehicle body structure, can enhance the rigidity of the vehicle body, especially when side impact, the threshold beam can effectively disperse the impact force, protect the safety of the vehicle occupant. Therefore, the threshold beam needs to test its structural strength after design and manufacture, including the lateral crushing performance evaluation of the threshold beam.

[0004] However, in the prior art, when evaluating the lateral crushing performance of the automobile threshold beam, due to the lack of special standardized test frock, the threshold beam is usually placed on a platform and fixed by using a simple fixing method such as a bandage before testing. Understandably, this test without standardized test frock can not ensure the limiting and fixing effect of the threshold beam before the test begins. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the problem of how to provide a threshold beam test frock with a fixed structure that can be used for a long time, which can be used as a standardized test frock to ensure the limiting and fixing effect of the threshold beam before the test begins.

[0006] The utility model provides a threshold beam test frock, which comprises a base and two supports arranged on the base, the base is used for placing a threshold beam, each support is provided with a first connecting part, the base is provided with a second connecting part, the second connecting part is provided with a plurality of second connecting parts along the length direction of the base, and the number of the second connecting parts is greater than that of the first connecting parts, and the first connecting part is used for connecting with the second connecting part, two supports are used for fixing two opposite ends of the threshold beam along the length direction, each support is provided with a first limiting mechanism and a second limiting mechanism, wherein the first limiting mechanism is used for abutting against the threshold beam in the horizontal direction to limit the threshold beam horizontally, and the second limiting mechanism is used for abutting against the threshold beam in the vertical direction to limit the threshold beam vertically.

[0007] The threshold beam test frock provided by the utility model has the following beneficial effects compared with the prior art, but is not limited thereto:

[0008] This invention proposes a long-term usable testing fixture for door sill beams, aiming to overcome the shortcomings of existing technologies and ensure the limiting and fixing effect of the door sill beam before the start of the test. This testing fixture has a fixed structure and can be used as a standardized testing fixture.

[0009] Optionally, the bracket is a U-shaped frame with the opening facing downwards, which includes a middle plate and a first side plate and a second side plate vertically connected to two opposite ends of the middle plate. The first limiting mechanism is disposed on the first side plate, and the second limiting mechanism is disposed on the middle plate. The middle plate, the first side plate and the second side plate form the internal space of the U-shaped frame, and the internal space is configured to allow the end of the threshold beam to pass through it.

[0010] Optionally, the first limiting mechanism has a first part located within the internal space and a second part located outside the internal space and on the side of the first side plate; the second part is used to receive force to change the position of the first part; the second part is used to drive the first part to contact the sill beam.

[0011] Optionally, the first limiting mechanism includes a first abutting part and a first guiding part connected together. The first abutting part is located in the internal space, and the first guiding part is movably inserted through the first side plate. The first abutting part is connected to the end of the first guiding part.

[0012] The first abutment portion is located in the internal space and is used to contact the sill beam; the first guide portion is used to receive force to change the position of the first abutment portion.

[0013] Optionally, the first limiting mechanism further includes a first adjusting member, which is movably connected to the first side plate. The first adjusting member is used to contact the first abutting part and drive the first abutting part to apply force to the sill beam in the horizontal direction, so as to clamp the sill beam between the second side plate and the first abutting part.

[0014] Optionally, the first abutting part includes a first top plate, and the first adjusting member includes a first bolt movably passing through the first side plate. The first side plate has a first threaded hole through it, and the first bolt is connected to the first threaded hole.

[0015] Optionally, a first window adapted to the shape of the first guide portion is provided on the first side plate, the first guide portion is movably inserted through the first window, and the first abutting portion is connected to one end of the first guide portion near the second side plate.

[0016] Optionally, the second limiting mechanism includes a second abutting part and a second guiding part connected together. The second abutting part is located in the internal space, and the second guiding part is movably inserted through the intermediate plate and used to drive the second abutting part to move in the internal space under force. The second abutting part is connected to the end of the second guiding part and is used to contact the sill beam.

[0017] The second limiting mechanism further includes a second adjusting member, which is movably connected to the intermediate plate. The second adjusting member is used to drive the second abutment part to apply force to the sill beam in the vertical direction, so as to clamp the sill beam between the base and the second abutment part.

[0018] Optionally, the second abutment includes a second top plate, and the second adjusting member includes a second bolt movably passing through the intermediate plate, wherein the intermediate plate has a second threaded hole therethrough, and the second bolt is connected to the second threaded hole.

[0019] Optionally, the intermediate plate has a second window that matches the shape of the second guide portion, the second guide portion is movably inserted through the second window, and the second abutment portion is connected to one end of the second guide portion near the base.

[0020] Optionally, the first connecting part is a first positioning hole respectively opened on the first side plate and the second side plate, the second connecting part is a second positioning hole, and a plurality of second positioning holes are arranged extending along the length direction of the base. A plurality of second positioning holes are provided on each of the two opposite side walls of the base.

[0021] The portion of the first side plate with the first positioning hole and the portion of the second side plate with the second positioning hole are respectively located on the sides of the two opposite side walls; the first positioning hole and the second positioning hole are used to be detachably connected by a threaded connector to fix the position of the bracket relative to the base in an adjustable manner.

[0022] Optionally, the testing fixture for this sill beam also includes a support block, which is detachably mounted on the base to support the sill beam. Attached Figure Description

[0023] Figure 1 The three-dimensional test fixture for the threshold beam of this utility model embodiment Figure 1 ;

[0024] Figure 2 This is a side view of the testing fixture for the threshold beam according to an embodiment of the present utility model;

[0025] Figure 3The three-dimensional test fixture for the threshold beam of this utility model embodiment Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the structure of the first limiting mechanism according to an embodiment of the present utility model;

[0027] Figure 5 This describes the possible outer contour structure of the sill beam in a possible embodiment of this utility model;

[0028] Figure 6 This is a schematic diagram showing the cooperation between the threshold beam and the support block in a possible embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] Abutment 1;

[0031] 2. Bracket 2, middle plate 21, first side plate 22, second side plate 23;

[0032] First limiting mechanism 3, first abutting part 31, first adjusting part 32, first guide part 33;

[0033] Second limiting mechanism 4, second abutting part 41, second adjusting part 42, second guide part 43;

[0034] First positioning hole 5;

[0035] Second positioning hole 6;

[0036] First connecting part a;

[0037] Second connecting part b. Detailed Implementation

[0038] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0039] In the description of this utility model, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "top", "bottom", "front", "back", "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0042] Furthermore, in the attached diagram, the Z-axis represents the vertical direction, that is, the up-down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; in the attached diagram, the X-axis represents the horizontal direction, that is, the left-right position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents right, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents left; in the attached diagram, the Y-axis represents the vertical direction, that is, the front-back position, and the positive direction of the Y-axis (that is, the direction the arrow points to) represents front, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents back.

[0043] It should also be noted that the meanings of the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model.

[0044] Example 1

[0045] like Figure 1 and Figure 3As shown, the testing fixture for the threshold beam according to an embodiment of the present invention includes: a base 1 and two supports 2 disposed on the base 1. The base 1 is used to place the threshold beam, and the two supports 2 are respectively used to fix two opposite ends of the threshold beam spaced apart along its length direction. Each support 2 is provided with a first connecting part a, and the base 1 is provided with a second connecting part b. Multiple second connecting parts b are provided along the length direction of the base 1, and the number of second connecting parts b is greater than the number of first connecting parts a. The first connecting part a is used to connect with the second connecting part b. Each support 2 is provided with a first limiting mechanism 3 and a second limiting mechanism 4, wherein the first limiting mechanism 3 is used to horizontally limit the threshold beam in the horizontal direction, and the second limiting mechanism 4 is used to vertically limit the threshold beam in the vertical direction.

[0046] As can be seen from the above, this utility model proposes a test fixture for a door sill beam that can be used for a long time, aiming to overcome the shortcomings of the prior art and ensure the limiting and fixing effect of the door sill beam before the start of the test. This test fixture has a fixed structure and can be used as a standardized test fixture.

[0047] A more detailed description includes: In this invention, the first limiting mechanism 3 and the second limiting mechanism 4 limit the horizontal and vertical directions of the sill beam. Compared with the traditional method of fixing with straps, this effectively prevents abnormal posture changes of the sill beam, such as flipping or tilting at both ends, thereby ensuring the accuracy of the test data. Furthermore, the sill beam to be tested can be placed on the base 1, and the two supports 2 can be adjusted in their installation position on the base 1 according to the actual length of the sill beam to be tested, so as to accommodate various models and specifications of sill beam components, ensuring the application range and practicality of this testing fixture.

[0048] Specifically, the first limiting mechanism 3 is used to abut against the sill beam in the horizontal direction, wherein the horizontal direction is the auxiliary direction. Figure 1 In the Y-axis direction, the second limiting mechanism 4 is used to abut against the sill beam in the vertical direction, wherein the vertical direction is the auxiliary direction. Figure 1 In the Z-axis direction, the length direction of the base 1 is attached. Figure 1 In the X-axis direction. The sill beam can be along the attached... Figure 1 The two brackets 2 are preferably U-shaped brackets with their openings facing downwards. The aforementioned "the two brackets 2 can be adjusted in their installation position on the base 1 according to the actual length of the threshold beam to be measured" means that the brackets 2 are fixed in different positions on the base 1 by connecting the first connecting part a of the two brackets 2 with the second connecting part b at different positions on the base 1.

[0049] As described above, after the positions of the two supports 2 are determined, the sill beam is limited by the first limiting mechanism 3 and the second limiting mechanism 4. Then, the lateral crush performance test of the sill beam can be performed by the testing equipment. The details of this test include: the output end of the testing equipment along the attached... Figure 1 The Z-axis abuts against the upper sidewall of the middle section of the sill beam and continues along the side of the sill beam (see attached). Figure 1 Pressure is applied in the Z-axis direction to test the lateral crushability of the sill beam.

[0050] In this embodiment, in conjunction with the appendix Figure 1 As shown, when the testing fixture for this sill beam needs to be used in conjunction with testing equipment to perform lateral crush performance testing on the sill beam, the possible implementation methods include: first, placing the sill beam to be tested horizontally on the base 1 (wherein the extension direction of the sill beam on the base 1 is as follows). Figure 1 (in the X-axis direction), then the two brackets 2 can adjust their installation position on the base 1 according to the actual length of the sill beam, and then the corresponding first limiting mechanism 3 on the two brackets 2 limits the sill beam in the horizontal direction.

[0051] More specifically, the details of "the first limiting mechanism 3 limiting the sill beam in the horizontal direction" include: two first limiting mechanisms 3, respectively mounted on two supports 2, abut against the side walls near both ends of the sill beam; at this time, the lower end face of the sill beam (attached) Figure 1 The threshold beam is in contact with the base 1 in the negative Z-axis direction. In the front-back direction, the two side walls of the threshold beam are in contact with the first limiting mechanism 3 and the bracket 2 respectively, so that the threshold beam is clamped between the first limiting mechanism 3 and the bracket 2 and is horizontally limited.

[0052] As mentioned above, after the threshold beam is horizontally limited, the corresponding second limiting mechanisms 4 on the two supports 2 need to be vertically positioned (see attached diagram). Figure 1 The upper limit of the sill beam (in the Z-axis direction) is described in more detail as follows: similar to the first limiting mechanism 3, at both ends of the fixture, there are second limiting mechanisms 4 abutting against the upper end face near the end of the sill beam, thereby vertically limiting the sill beam; then, the output end of the test equipment is moved along the attached... Figure 1 The device abuts against the upper side wall of the middle part of the sill beam in the Z-axis direction and continuously applies lateral pressure to the sill beam, thereby enabling lateral crush performance testing of the sill beam. During this process, both ends of the sill beam are always limited by the first limiting mechanism 3 and the second limiting mechanism 4, which can effectively prevent abnormal posture changes (such as flipping and tilting of both ends) of the sill beam during lateral loading, thereby ensuring the accuracy of the test data and improving the safety and stability of the entire test process.

[0053] Understandably, when it is necessary to limit the sill beam, whether to limit the sill beam horizontally first or vertically first is a decision that can be flexibly made by those skilled in the art / operators as needed.

[0054] Optionally, the bracket 2 is a U-shaped frame with the opening facing downwards, which includes a middle plate 21 and a first side plate 22 and a second side plate 23 vertically connected to two opposite ends of the middle plate 21. The first limiting mechanism 3 is disposed on the first side plate 22, and the second limiting mechanism 4 is disposed on the middle plate 21. The middle plate 21, the first side plate 22 and the second side plate 23 form the internal space of the U-shaped frame, and the internal space is configured to allow the end of the threshold beam to pass through it.

[0055] In this embodiment, the end of the threshold beam can extend into the internal space enclosed by the middle plate 21, the first side plate 22, the second side plate 23, and the base 1. The first limiting mechanism 3 can push the threshold beam towards the side wall of the second side plate 23 toward the first side plate 22, so that the threshold beam abuts against the side wall of the second side plate 23, thereby limiting the threshold beam in the horizontal direction. Then, by the second limiting mechanism 4 abutting against the threshold beam, the threshold beam can be limited in the vertical direction, preventing the two ends of the threshold beam from tilting up during lateral loading, thereby affecting the accuracy of the test results.

[0056] As mentioned above, by designing the bracket 2 as a U-shaped frame with the opening facing downwards, the middle plate 21, the first side plate 22, the second side plate 23 and the base 1 form an adjustable compression space structure, which can be flexibly adjusted according to the different cross-sectional dimensions of the threshold beam to be tested, so as to adapt to various types and specifications of threshold beam components, greatly improving the application range and practicality of this tooling.

[0057] Optionally, the first limiting mechanism 3 has a first part located within the internal space and a second part located outside the internal space and on the side of the first side plate 22; the second part is used to receive force to change the position of the first part; the second part is used to drive the first part to contact the sill beam. The second limiting mechanism 4 adopts a similar design. Thus, in this embodiment, combined with the attached... Figure 1 and attached Figure 2 As shown, the first limiting mechanism 3 and the second limiting mechanism 4 are respectively movably mounted on the first side plate 22 and the middle plate 21.

[0058] Optionally, the first limiting mechanism 3 includes a first abutting part 31 and a first guiding part 33 connected together. The first abutting part 31 is located in the internal space, and the first guiding part 33 is movably inserted through the first side plate 22. The first abutting part 31 is connected to the end of the first guiding part 33. The first abutting part 31 is located in the internal space and is used to contact the sill beam. The first guiding part 33 is used to receive force to change the position of the first abutting part 31.

[0059] In this embodiment, in conjunction with the appendix Figure 2 and attached Figure 4 As shown, the first guide portion 33 can be a plate structure or a column structure, wherein the first abutting portion 31 can be connected to the end of the first guide portion 33 near the second side plate 23 by welding, screwing, or snapping. In use, the first limiting mechanism 3 can be manually adjusted to make the first guide portion 33 drive the first abutting portion 31 to contact the sill beam.

[0060] In other embodiments, the end of the first guide portion 33 away from the first abutment portion 31 may be connected to a plate that cannot pass through the first side plate 22, the plate being equipped with a handle for easy manual pushing and pulling by an operator.

[0061] Optionally, the first limiting mechanism 3 further includes a first adjusting member 32, which is movably connected to the first side plate 22. The first adjusting member 32 is used to contact the first abutting part 31 and drive the first abutting part 31 to apply force to the sill beam in the horizontal direction, so as to clamp the sill beam between the second side plate 23 and the first abutting part 31.

[0062] In this embodiment, in conjunction with the appendix Figure 1 and attached Figure 2 As shown, the first adjusting member 32 is along the attached Figure 2 A central Y-axis is connected through the first side plate 22. The sill beam is placed within the space enclosed by the middle plate 21, the first side plate 22, the second side plate 23, and the base 1. The end face of the first abutment part 31 near the second side plate 23 is used to contact the sill beam. The first adjusting member 32 can make the first abutment part 31 press against the sill beam, thereby clamping the sill beam between the first abutment part 31 and the second side plate 23. During the above process, the first guide part 33 plays a guiding role, ensuring that the first abutment part 31 always moves along the attached... Figure 1 Movement along the Y-axis.

[0063] In the above-described working process, the first adjusting member 32 can be a bolt, and there are a total of four first adjusting members 32. The first abutting part 31 can be a plate structure to increase the contact area with the sill beam, and the four corners of the first abutting part 31 are used to contact the aforementioned four first adjusting members 32. The first side plate 22 can be provided with threaded holes, and bolts are connected to the threaded holes on the first side plate 22, wherein the extension direction of the bolts is as follows. Figure 2 In the Y-axis direction; it can be seen that, in a possible implementation, by first making the first adjusting member 32, which is a bolt, not in contact with the first abutting part 31, the first adjusting member 32 can be brought close to / in contact with the sill beam extending into the bracket 2. Then, by screwing the first adjusting member 32, the first abutting part 31 can be pressed against the sill beam, thereby clamping the sill beam between the first abutting part 31 and the second side plate 23.

[0064] Understandably, in possible implementations, the first adjusting member 32 can also be a linear drive member, such as a hydraulic cylinder, pneumatic cylinder, servo electric cylinder, and electric telescopic rod, that is, the first abutment part 31 is driven to move closer to the second side plate 23 by a hydraulic or electronic control device to fix the sill beam.

[0065] As can be understood from the above, the possible design principles of the tooling in this embodiment include: the first abutting part 31 includes a first top plate, the first adjusting member 32 includes a first bolt movably inserted on the first side plate 22, the first side plate 22 has a first threaded hole through it, and the first bolt is connected to the first threaded hole.

[0066] In this embodiment, in conjunction with the appendix Figure 2 As shown, a through-hole is provided on the first side plate 22, and the first bolt is positioned horizontally (see attached diagram). Figure 2 The first top plate (connected to the first threaded hole in the Y-axis direction) has its end face near the second side plate 23 in contact with the sill beam, and its end face away from the second side plate 23 in contact with the first bolt. By tightening the first bolt, the first top plate can be pressed firmly against the sill beam, thus clamping the sill beam between the first top plate and the second side plate 23. To improve the stability of the sill beam's positioning, multiple first bolts can be provided.

[0067] Optionally, the first side plate 22 has a first window that matches the shape of the first guide portion 33, the first guide portion 33 is movably inserted through the first window, and the first abutting portion 31 is connected to the end of the first guide portion 33 near the second side plate 23.

[0068] In this embodiment, in conjunction with the appendix Figure 2As shown, the first guide portion 33 can be a plate structure or a column structure. A first window adapted to the shape of the first guide portion 33 is provided on the first side plate 22. The first abutment portion 31 (first top plate) can be connected to the end of the first guide portion 33 near the second side plate 23 by welding. When in use, the first limiting mechanism 3 can be manually adjusted to drive the first top plate (first abutment portion 31) to contact the sill beam. Then, the first bolt (first adjusting member 32) is threaded into the first threaded hole on the first side plate 22, and the first bolt abuts against the end face of the first top plate away from the second side plate 23. The first bolt is then tightened to make the first top plate press against the sill beam to fix the sill beam.

[0069] Optionally, the second limiting mechanism 4 includes a second abutting part 41 and a second guiding part 43 connected together. The second abutting part 41 is located in the internal space, and the second guiding part 43 is movably inserted through the intermediate plate 21 and is used to drive the second abutting part (41) to move in the internal space under force. The second abutting part 41 is connected to the end of the second guiding part 43, and the second abutting part 41 is used to contact the sill beam.

[0070] In this embodiment, the second guide portion 43 can be a plate structure or a column structure, wherein the second abutment portion 41 can be connected to one end of the second guide portion 43 near the base 1 by welding, screwing, or snapping. When in use, the second limiting mechanism 4 can be manually adjusted to bring the second guide portion 43 into contact with the sill beam.

[0071] In other embodiments, the end of the second guide portion 43 away from the second abutment portion 41 may be connected to a plate that cannot pass through the intermediate plate 21, the plate having a handle for easy manual pushing and pulling by an operator.

[0072] Optionally, the second limiting mechanism 4 further includes a second adjusting member 42, which is movably connected to the intermediate plate 21. The second adjusting member 42 is used to drive the second abutment part 41 to apply force to the sill beam in the vertical direction, so as to clamp the sill beam between the base 1 and the second abutment part 41.

[0073] In this embodiment, in conjunction with the appendix Figure 1 and attached Figure 2 As shown, the second adjusting member 42 is along the attached Figure 2A central Z-axis is connected through the middle plate 21. The sill beam is placed within the space enclosed by the middle plate 21, the first side plate 22, the second side plate 23, and the base 1. The end face of the second abutment 41 near the base 1 is used to contact the sill beam. The second adjusting member 42 can make the second abutment 41 press against the sill beam, thereby clamping the sill beam between the second abutment 41 and the base 1. During the above process, the second guiding part 43 plays a guiding role, ensuring that the second abutment 41 always moves along the attached... Figure 1 Movement along the Y-axis.

[0074] In the above-described working process, the second adjusting member 42 can be a bolt, and there are a total of four second adjusting members 42. The second abutting part 41 can be a plate structure to increase the contact area with the sill beam, and the four corners of the second abutting part 41 are used to contact the aforementioned four second adjusting members 42. Threaded holes can be opened on the intermediate plate 21, and bolts are connected to the threaded holes on the intermediate plate 21, wherein the extension direction of the bolts is as follows: Figure 2 In the Z-axis direction, the second abutment 41 can be pressed against the sill beam by tightening the bolts, thereby clamping the sill beam between the second abutment 41 and the base 1. The second adjusting member 42 can also be a linear drive member, such as a hydraulic cylinder, pneumatic cylinder, servo electric cylinder, or electric telescopic rod, that is, the second abutment 41 is driven to move closer to the base 1 by a hydraulic or electronic control device to fix the sill beam.

[0075] Optionally, the second abutment portion 41 includes a second top plate, and the second adjusting member 42 includes a second bolt movably passing through the intermediate plate 21. The intermediate plate 21 has a second threaded hole through it, and the second bolt is connected to the second threaded hole.

[0076] In this embodiment, in conjunction with the appendix Figure 2 As shown, a through-hole second threaded hole is provided on the intermediate plate 21, and the second bolt is in the vertical direction (see attached diagram). Figure 2 The second top plate (connected to the second threaded hole in the Z-axis direction) has its end face near the base 1 in contact with the sill beam. By tightening the second bolt, the second top plate can be pressed firmly against the sill beam, thus clamping the sill beam between the second top plate and the base 1. To improve the stability of the sill beam, multiple second bolts can be provided.

[0077] Optionally, the intermediate plate 21 has a second window that matches the shape of the second guide portion 43. The second guide portion 43 is movably inserted through the second window, and the second abutment portion 41 is connected to one end of the second guide portion 43 near the base 1.

[0078] In this embodiment, in conjunction with the appendix Figure 2As shown, the second guide portion 43 can be a plate structure or a column structure. A second window adapted to the shape of the second guide portion 43 is provided on the intermediate plate 21. The second abutment portion 41 (first top plate) can be connected to the end of the second guide portion 43 near the base 1 by welding. When in use, the second limiting mechanism 4 can be manually adjusted to drive the second top plate (second abutment portion 41) to contact the sill beam. Then, the second bolt (second adjusting member 42) is threaded into the second threaded hole on the intermediate plate 21, and the second bolt abuts against the end face of the second top plate away from the base 1. The second bolt is then tightened to press the second top plate against the sill beam to fix the sill beam.

[0079] Optionally, the first connecting part a is a first positioning hole 5 respectively opened on the first side plate 22 and the second side plate 23, the second connecting part b is a second positioning hole 6, and a plurality of second positioning holes 6 are arranged extending along the length direction of the base 1. A plurality of second positioning holes 6 are provided on each of the two opposite side walls of the base 1.

[0080] The portion of the first side plate 22 with the first positioning hole 5 and the portion of the second side plate 23 with the second positioning hole 6 are respectively located on the sides of the two opposite side walls; the first positioning hole 5 and the second positioning hole 6 are used to detachably connect by threaded connectors to fix the position of the bracket 2 relative to the base 1 in an adjustable manner.

[0081] In this embodiment, both the first positioning hole 5 and the second positioning hole 6 can be threaded holes. The bracket 2 is fixed relative to the base 1 by engaging with threaded fasteners (such as bolts) on the first side plate 22 and the second side plate 23, respectively, through the engagement of the first positioning hole 5 and the second positioning hole 6 on the base 1. Alternatively, the first positioning hole 5 can be a long slot, and the second positioning hole 6 can be a threaded hole, thus allowing the bracket 2 to be fixed relative to the base 1 without requiring precise positioning.

[0082] Optionally, the testing fixture for this sill beam also includes support blocks, which are detachably mounted on the base 1 and used to insert under the end of the sill beam to support it. More specifically, in this embodiment, for sill beam samples with complex irregular cross-sections, the base 1 cannot effectively support the sill beam. Therefore, the testing fixture for this sill beam is specially designed with support blocks of different sizes and shapes (not shown in the figure). These support blocks can be selected and combined according to the specific contour of the sill beam to level it, ensuring that the sill beam receives sufficient and uniform support during the crush test, maximizing the simulation of actual working conditions, improving the accuracy and reliability of test data, and further reducing the probability of the sill beam overturning during the test. For example, suppose a sill beam has the following characteristics... Figure 5 The irregular cross-sectional profile shown, and the outer contour of its contact surface with the base 1 as shown...Figure 5 The gap indicated by the middle arrow shows that the support block should have the following characteristics: Figure 6 The cross-section indicated by the arrow ensures that the ends of the sill beam receive sufficient and uniform support.

[0083] Optionally, the aforementioned "support block can be detachably disposed on the base 1" can mean that there is no connection between the support block and the base 1, or that the support block is connected to the base through a soft connector such as a thin rope, which facilitates the storage and handling of the test fixture.

[0084] Example 2

[0085] This embodiment provides a testing fixture for a sill beam, basically as described in Embodiment 1. The difference between this embodiment and Embodiment 1 is that, while both the second adjusting member 42 and the first adjusting member 32 are bolts, a threaded hole for adapting the second adjusting member 42 is provided on the second abutment portion 41. Thus, in this embodiment, the steps for testing the sill beam may include the following:

[0086] S1: Place the sill beam on the base 1, with the end of the sill beam extending into the bracket 2; at this time, the second adjusting member 42 is screwed to the intermediate member 21 and the second abutting part 41 at different positions, so that the second abutting part 41 can be suspended in the internal space, and neither the first abutting part 31 nor the second abutting part 41 contacts the sill beam, and the first adjusting member 32 does not contact the first abutting part 31.

[0087] S2: Disconnect the screw connection between the second adjusting member 42 and the second abutting part 41, so that the two are separated, and then let the second abutting part 41 move down until it contacts the end of the sill beam; let the first abutting part 31 approach / contact the end of the sill beam.

[0088] S3: Tighten the second adjusting member 42 to screw the second adjusting member 42 and the second abutment part 41 together, so that the end of the sill beam is subjected to a vertical force and is clamped between the second abutment part 41 and the base 1; Tighten the first adjusting member 32 to subject the end of the sill beam to a horizontal force and be clamped between the first abutment part 31 and the second side plate 23.

[0089] S4: Perform a crush test.

[0090] S5: Tighten the second adjusting member 42 to release the screw connection between the second adjusting member 42 and the second abutment part 41, so that the second abutment part 41 and the sill beam are separated, and the second abutment part 41 and the second adjusting member 42 are screwed back together; release the screw connection between the first adjusting member 32 and the first abutment part 31, so that the first abutment part 31 and the sill beam are separated.

[0091] S6: Remove the threshold beam that has completed the test.

[0092] Understandably, the threaded hole on the second abutment 41 for accommodating the second adjusting member 42 is designed to facilitate fixing the position of the second abutment 41 in the internal space when the testing fixture is idle. Furthermore, after the test is completed, when it is necessary to remove the sill beam, the threaded hole design allows the operator / person skilled in the art to fix the second abutment 41 relative to the bracket 2 by re-screwing the second abutment 41 and the second adjusting member 42 after releasing the contact between the second abutment 41 and the sill beam, without requiring continuous force to maintain the separation of the second abutment 41 and the sill beam.

[0093] Understandably, to consider testing efficiency, the threaded hole on the second abutment portion 41 for adapting to the second adjusting member 42 can be set to a shallow depth, sufficient to allow the second abutment portion 41 to hover within the internal space. The specific depth of this threaded hole is a matter that can be flexibly set by those skilled in the art, and will not be elaborated here.

[0094] Example 3

[0095] This embodiment provides a testing fixture for a sill beam, basically as described in Embodiment 1. The difference between this embodiment and Embodiment 2 is that, while both the second adjusting member 42 and the first adjusting member 32 are bolts, a threaded hole for adapting the first adjusting member 32 is provided on the first abutment portion 31. Similarly to the relevant description in Embodiment 2, the design of this threaded hole is beneficial for fixing the position of the first abutment portion 31 in the internal space when the testing fixture is idle.

[0096] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0097] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A testing fixture for a door sill beam, characterized in that, include: A base (1) and two supports (2) disposed on the base (1). The base (1) is used to place the threshold beam. Each support (2) is provided with a first connecting part (a) and a second connecting part (b) is provided on the base (1). Multiple second connecting parts (b) are provided along the length direction of the base (1), and the number of second connecting parts (b) is greater than the number of first connecting parts (a). The first connecting part (a) is used to connect with the second connecting part (b). The two supports (2) are used to fix the two opposite ends of the threshold beam spaced apart along its length direction. Each support (2) is provided with a first limiting mechanism (3) and a second limiting mechanism (4). The first limiting mechanism (3) is used to abut against the threshold beam in the horizontal direction to limit the threshold beam horizontally, and the second limiting mechanism (4) is used to abut against the threshold beam in the vertical direction to limit the threshold beam vertically.

2. The testing fixture for the sill beam according to claim 1, characterized in that, The bracket (2) is a U-shaped frame with the opening facing downwards. It includes a middle plate (21) and a first side plate (22) and a second side plate (23) vertically connected to the two opposite ends of the middle plate (21). The first limiting mechanism (3) is disposed on the first side plate (22), and the second limiting mechanism (4) is disposed on the middle plate (21). The middle plate (21), the first side plate (22), and the second side plate (23) form the internal space of the U-shaped frame. The internal space is configured to allow the end of the threshold beam to pass through it.

3. The testing fixture for the sill beam according to claim 2, characterized in that, The first limiting mechanism (3) has a first part located inside the internal space and a second part located outside the internal space and on the side of the first side plate (22); the second part is used to receive force to change the position of the first part; the second part is used to drive the first part to contact the threshold beam.

4. The testing fixture for the sill beam according to claim 3, characterized in that, The first limiting mechanism (3) includes a first abutting part (31) and a first guiding part (33) connected together. The first abutting part (31) is located in the internal space, and the first guiding part (33) is movably inserted through the first side plate (22). The first abutting part (31) is connected to the end of the first guiding part (33). The first abutting part (31) is located in the internal space and is used to contact the threshold beam. The first guide part (33) is used to receive force to change the position of the first abutting part (31).

5. The testing fixture for the sill beam according to claim 4, characterized in that, The first limiting mechanism (3) further includes a first adjusting member (32), which is movably connected to the first side plate (22). The first adjusting member (32) is used to contact the first abutting part (31) and drive the first abutting part (31) to apply force to the sill beam in the horizontal direction, so as to clamp the sill beam between the second side plate (23) and the first abutting part (31).

6. The testing fixture for the sill beam according to claim 5, characterized in that, The first abutting part (31) includes a first top plate, and the first adjusting member (32) includes a first bolt movably inserted through the first side plate (22). The first side plate (22) has a first threaded hole through it, and the first bolt is connected to the first threaded hole.

7. The testing fixture for the sill beam according to claim 2, characterized in that, The second limiting mechanism (4) includes a connected second abutment (41) and a second guide (43). The second abutment (41) is located in the internal space. The second guide (43) is movably inserted through the intermediate plate (21) and is used to drive the second abutment (41) to move in the internal space under force. The second abutment (41) is connected to the end of the second guide (43) and is used to contact the sill beam. The second limiting mechanism (4) further includes a second adjusting member (42), which is movably connected to the intermediate plate (21). The second adjusting member (42) is used to drive the second abutment part (41) to apply force to the threshold beam in the vertical direction, so as to clamp the threshold beam between the base (1) and the second abutment part (41).

8. The testing fixture for the sill beam according to claim 7, characterized in that, The second abutment (41) includes a second top plate, and the second adjusting member (42) includes a second bolt movably inserted through the intermediate plate (21). The intermediate plate (21) has a second threaded hole through it, and the second bolt is connected to the second threaded hole.

9. The testing fixture for the sill beam according to claim 2, characterized in that, The first connecting part (a) is a first positioning hole (5) respectively opened on the first side plate (22) and the second side plate (23), and the second connecting part (b) is a second positioning hole (6). A plurality of second positioning holes (6) are arranged along the length direction of the base (1), and a plurality of second positioning holes (6) are provided on each of the two opposite side walls of the base (1). The portion of the first side plate (22) with the first positioning hole (5) and the portion of the second side plate (23) with the second positioning hole (6) are respectively located on the sides of the two opposite side walls; the first positioning hole (5) and the second positioning hole (6) are used to be detachably connected by a threaded connector to fix the position of the bracket (2) relative to the base (1) in an adjustable manner.

10. The testing fixture for the sill beam according to claim 1, characterized in that, It also includes a support block, which is detachably disposed on the base (1) for supporting the threshold beam.

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