Fixing mechanism and test tool

Abstract

The utility model relates to the technical field of fixing tools, in particular to a fixing mechanism and a test tool, the fixing mechanism comprises a plurality of support frames and a pressing piece, the plurality of support frames are sequentially arranged along a first direction, and a cross beam is arranged on the support frames and is used for bearing a piece to be fixed and suspending the piece to be fixed. The pressing piece is movably connected with the supporting frame, and the pressing piece can move towards the cross beam and press the to-be-fixed piece on the cross beam. According to the fixing mechanism, a plurality of supporting point positions can be formed by arranging a plurality of supporting frames, the cross beams of the supporting frames bear and support the to-be-fixed part away from the ground and other placing faces to be suspended, and contact between the to-be-fixed part and the placing faces is reduced. And the to-be-fixed part is pressed on the cross beam by arranging the pressing part, so that shaking and abrasion of the to-be-fixed part in the test process are reduced. And after the to-be-fixed part is clamped and fixed through the cross beam and the pressing part, the actual use state of the to-be-fixed part can be simulated.

Description

Technical Field

[0001] The utility model relates to the technical field of fixing tooling, in particular to a fixing mechanism and a test tooling. Background Art

[0002] During the development and re-inspection of commercial vehicles, it is necessary to conduct explosion tests and impact resistance tests on the air-conditioning core.

[0003] When conducting a blasting test, the air-conditioning core is placed on the ground. After the test begins, high pressure needs to be applied to the air-conditioning core. The core is generally made of aluminum and is relatively soft. The core will expand and deform due to the high pressure, and slide and rub against the ground, causing edge damage, which will affect the judgment of the test results.

[0004] During the impact test, the air conditioner core is connected to the high and low pressure pipes and placed at the bottom of the test equipment. After the test begins, the air conditioner core is subjected to the impact of high and low pressure cycles, which will cause vibrations and friction and collision with the inner wall of the test equipment, which can easily cause damage to the air conditioner core. In addition, this test environment is inconsistent with the use environment of the air conditioner core on the vehicle, which will also affect the judgment of the test results. Utility Model Content

[0005] The utility model aims to provide a fixing mechanism and a test fixture to solve the problem in the related art that the air conditioner core is easily damaged by friction with the placement surface during the explosion and impact resistance tests.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An embodiment of the first aspect of the utility model provides a fixing mechanism, the fixing mechanism comprising:

[0008] A plurality of support frames, wherein the plurality of support frames are arranged in sequence along a first direction, and a crossbeam is provided on the support frame, and the crossbeam is used to support the part to be fixed and suspend the part to be fixed;

[0009] A pressing piece is movably connected to the support frame, and the pressing piece can move toward the crossbeam and press the part to be fixed onto the crossbeam.

[0010] In one embodiment, the support frame includes a plurality of vertical rods, both ends of the cross beam are connected to the vertical rods, and the cross beam is suspended.

[0011] In one of the embodiments, the support frame further includes a flexible member, which is disposed on the crossbeam and is used to contact the surface of the member to be fixed.

[0012] In one of the embodiments, the support frame further includes a fixed beam, both ends of which are connected to the vertical rods, the fixed beam is arranged above the cross beam in parallel and at intervals, and the clamping member is movably connected to the fixed beam.

[0013] In one embodiment, the pressing member comprises:

[0014] A screw rod having a first end and a second end, wherein the screw rod is threadedly connected to the fixing beam;

[0015] A driving member, the driving member is drivingly connected to the first end of the screw rod, and the driving member can drive the screw rod to rotate;

[0016] A pressing block is arranged at the second end of the screw rod and is used to press the part to be fixed.

[0017] In one embodiment, at least the portion of the pressing block that presses against the piece to be fixed is flexible.

[0018] In one embodiment, the driving member is configured as a handle, and the handle includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are cross-connected, and the screw rod is connected to the intersection of the first connecting rod and the second connecting rod.

[0019] In one embodiment, the fixing mechanism further comprises a base frame, and a plurality of the support frames are sequentially arranged on the base frame along the first direction;

[0020] Among the multiple support frames, the one support frame located at one end of the first direction is a first support frame, and the other support frames are second support frames. The first support frame is slidably or fixedly connected to the base frame, and each of the second support frames is slidably connected to the base frame.

[0021] In one of the embodiments, a guide rail is disposed on the base frame, and the guide rail is disposed along the first direction. A slider is disposed at the bottom of the second support member, and the slider is slidably connected to the guide rail.

[0022] The embodiment of the second aspect of the utility model provides a test tool, including an air-conditioning core and the above-mentioned fixing mechanism, the part to be fixed is configured as the air-conditioning core, and the air-conditioning core is fixed on the crossbeam by a clamping member.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides a fixing mechanism and a test fixture. The fixing mechanism includes a plurality of support frames and a clamping member. By setting a plurality of support frames, a plurality of support points can be formed. The crossbeams of the plurality of support frames support and suspend the parts to be fixed from the ground or other placement surfaces, thereby reducing the contact between the parts to be fixed and the placement surface. The clamping member is set to clamp the parts to be fixed on the crossbeam, thereby reducing the shaking and wear of the parts to be fixed during the test. Moreover, after the parts to be fixed are clamped and fixed by the crossbeam and the clamping member, the actual use state of the parts to be fixed can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the fixing mechanism in the embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the support frame in the embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the pressing member in the embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the base frame in the embodiment of the utility model.

[0029] In the figure:

[0030] 1. Support frame; 1a. First support frame; 1b. Second support frame; 11. Crossbeam; 12. Vertical rod; 13. Flexible member; 14. Fixed beam;

[0031] 2. Pressing member; 21. Screw rod; 22. Driving member; 221. First connecting rod; 222. Second connecting rod; 23. Pressing block;

[0032] 3. Base frame; 31. Guide rail; 32. Rod; 33. Connecting plate. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] like Figure 1 to Figure 2 As shown, Figure 1The X direction shown in is a schematic diagram of the first direction. This embodiment provides a fixing mechanism, which includes a plurality of support frames 1 and a clamping member 2. The plurality of support frames 1 are arranged in sequence along the first direction. A crossbeam 11 is provided on the support frame 1. The crossbeam 11 is used to support the part to be fixed and suspend the part to be fixed. The clamping member 2 is movably connected to the support frame 1, and the clamping member 2 can move toward the crossbeam 11 and press the part to be fixed on the crossbeam 11. In this way, this embodiment can form a plurality of supporting points by arranging a plurality of support frames 1. The crossbeams 11 of the plurality of support frames 1 support and suspend the part to be fixed from a placement surface such as the ground, thereby reducing the contact between the part to be fixed and the placement surface. And by arranging the clamping member 2, the part to be fixed is pressed on the crossbeam 11, thereby reducing the shaking and wear of the part to be fixed during the test. Moreover, after the fixed part is clamped and fixed by the cross beam 11 and the clamping part 2, the actual use state of the fixed part can be simulated. The fixed part can be configured as an air-conditioning core, which solves the problem in the related technology that the air-conditioning core is easily damaged by friction with the placement surface during the blasting and impact resistance tests.

[0038] In this embodiment, the pressing member 2 and the part to be fixed may only be in contact with each other, or may be magnetically connected, clamped or threadedly connected to fix the part to be fixed on the beam 11 .

[0039] like Figure 1 to Figure 2 As shown, in some embodiments, the support frame 1 includes a plurality of vertical rods 12, both ends of the cross beam 11 are connected with the vertical rods 12, and the cross beam 11 is suspended. In this way, the plurality of vertical rods 12 support the cross beam 11 from the ground or other placement surface, so that the cross beam 11 is suspended, and the vertical rods 12 are connected to both ends of the cross beam 11. The vertical rods 12 and the cross beam 11 form a gantry structure, which provides more stable support for the fixed parts.

[0040] In this embodiment, the size of the crossbeam 11 can be equal to or slightly larger than the size of the part to be fixed, so that the vertical rod 12 can fit or abut the side of the part to be fixed, limit the side of the part to be fixed, further reduce the shaking and wear of the part to be fixed, have strong site adaptability, and further improve the accuracy of the test structure.

[0041] The connection between the cross beam 11 and the vertical rod 12 may be a detachable connection, for example, the connection between the cross beam 11 and the vertical rod 12 may be a threaded connection, a clamping connection or an adhesive connection. The vertical rod 12 may be provided with a plurality of connection positions, which are arranged along the length direction of the vertical rod 12. The connection positions can be selectively connected to the cross beam 11, so as to fix the parts to be fixed of different thicknesses.

[0042] like Figure 1 to Figure 2As shown, in some embodiments, the support frame 1 also includes a flexible member 13, which is at least arranged on the beam 11. The flexible member 13 is used to contact the surface of the part to be fixed, that is, the flexible member 13 can reduce the rigid collision between the part to be fixed and the beam 11, and reduce the wear of the part to be fixed.

[0043] In this embodiment, the flexible member 13 can also be arranged at the part where the vertical rod 12 contacts the part to be fixed, so as to reduce the rigid contact between the vertical rod 12 and the part to be fixed. The material of the flexible member 13 can be, but is not limited to, an elastic material, such as silicone or soft rubber, etc., which can increase the buffering and shock absorption between the part to be fixed and the crossbeam 11, and further reduce the wear of the part to be fixed. The connection between the flexible member 13 and the crossbeam 11 can be, but is not limited to, bonding, such as bonding with strong glue.

[0044] like Figure 1 to Figure 2 As shown, in some embodiments, the support frame 1 also includes a fixed beam 14, both ends of which are connected to vertical rods 12, the fixed beam 14 is arranged parallel and spaced above the cross beam 11, and the clamping member 2 is movably connected to the fixed beam 14. With this arrangement, the clamping member 2 can be supported by the fixed beam 14, and the connection is stable. Moreover, the vertical rods 12 are supported at both ends of the fixed beam 14, thereby reducing the shaking of the fixed beam 14 and the clamping member 2, and the clamping position of the clamping member 2 to be fixed is more stable and firm.

[0045] In this embodiment, a plurality of clamping members 2 are provided along the length direction of the cross beam 11, and the member to be fixed can be clamped and fixed at multiple points. The connection between the fixed beam 14 and the cross beam 11 can be integrally formed or welded, or can be a detachable connection such as bolt connection, clamping or bonding. The fixed beam 14 is connected to the top of the vertical rod 12 and the fixed beam 14 and the top of the vertical rod 12 can be flush. The height difference between the fixed beam 14 and the cross beam 11 can be, but is not limited to, 100 mm to 140 mm. Optionally, the height difference between the fixed beam 14 and the cross beam 11 can be 120 mm.

[0046] like Figures 2 to 3 As shown, in some embodiments, the pressing member 2 includes a screw rod 21, a driving member 22 and a pressing block 23. The screw rod 21 has a first end and a second end. The screw rod 21 can be arranged vertically, and the screw rod 21 is threadedly connected to the fixed beam 14. The driving member 22 is transmission-connected to the first end of the screw rod 21, and the driving member 22 can drive the screw rod 21 to rotate. The pressing block 23 is arranged at the second end of the screw rod 21 and is used to press the member to be fixed.

[0047] With such arrangement, when in use, the part to be fixed can be placed flat on the beam 11, and the driving member 22 drives the screw 21 to rotate forward, and the screw 21 drives the pressure block 23 to gradually approach the part to be fixed and abut against the part to be fixed, and the part to be fixed is pressed against the beam 11. The screw 21 can apply different levels of pressure to the part to be fixed, and the screw 21 and the fixed beam 14 are reversely locked by the thread under the reaction of the pressure. When the use is over, the driving member 22 drives the screw 21 to rotate in the opposite direction, and the screw 21 drives the pressure block 23 to gradually move away from the part to be fixed, and the part to be fixed can be removed from the beam 11. This embodiment can be clamped and adjusted according to parts to be fixed of different sizes, has strong versatility, simple structure, convenient installation, disassembly and replacement, and is firmly and stably fixed. It can be operated independently by one person, which improves the efficiency and convenience of the test.

[0048] In this embodiment, the driving member 22 can be configured as a motor, a rotary hydraulic cylinder or a rotary cylinder. Of course, the pressing member 2 can also be adjusted manually. The diameter of the screw rod 21 can be, but not limited to, 8 mm. A plurality of pressing members 2 can be provided along the length direction of the second bracket to form multi-point pressing on the fixed member. The spacing between two adjacent screw rods 21 can be, but not limited to, 90 mm-110 mm. Optionally, the spacing between two adjacent screw rods 21 can be 100 mm. The axial length of the screw rod 21 can be, optionally, 100 mm.

[0049] The clamping member 2 may also include a pressure sensor and a controller that are communicatively connected. The pressure sensor may be arranged at the end of the screw 21 close to the part to be fixed, and is used to detect the pressure of the screw 21 on the part to be fixed. The controller is communicatively connected with the driving member 22, and the controller may pre-set a preset pressure threshold. When the pressure value detected by the pressure sensor is lower than the preset pressure threshold, the controller controls the driving member 22 to drive the screw 21 to gradually move toward the part to be fixed, increase the pressure on the surface of the screw 21 on the part to be fixed, and adjust the pressure of the screw 21 on the part to be fixed to the preset pressure threshold. When the pressure value detected by the pressure sensor is higher than the preset pressure threshold, the controller controls the driving member 22 to drive the screw 21 to gradually move in a direction away from the part to be fixed, reduce the pressure of the screw 21 on the surface of the part to be fixed, and adjust the pressure of the screw 21 on the part to be fixed to the preset pressure threshold, so that the driving of the screw 21 by the driving member 22 is more intelligent, and the extrusion deformation of the screw 21 on the part to be fixed is reduced.

[0050] like Figures 2 to 3 As shown, in some embodiments, the driving member 22 can be configured as a handle, which includes a first connecting rod 221 and a second connecting rod 222. The first connecting rod 221 and the second connecting rod 222 are cross-connected, and the screw 21 is connected to the intersection of the first connecting rod 221 and the second connecting rod 222. It is easy to hold and use, and the design of multiple holding positions is more labor-saving.

[0051] In some embodiments, at least the portion of the pressing block 23 that presses against the part to be fixed is flexible. When the pressing block 23 squeezes the part to be fixed, the flexible portion of the pressing block 23 can abut against the part to be fixed, reducing the rigid collision between the screw 21 and the part to be fixed and reducing the wear of the part to be fixed.

[0052] In this embodiment, the material of the pressing block 23 can be but is not limited to elastic material, such as silicone or soft rubber, which can increase the buffering and shock absorption between the surface of the fixed part and the end of the screw 21, and reduce the wear or extrusion deformation of the fixed part.

[0053] The pressing block 23 may be provided with a groove, and the end of the screw rod 21 is inserted into the groove and the two are connected. Furthermore, the end of the screw rod 21 and the groove may be bonded by filling strong glue to improve the connection stability between the screw rod 21 and the pressing block 23. The cross-sectional shape of the groove may be, but is not limited to, square or hexagonal.

[0054] like Figure 1 and Figure 4 As shown, in some embodiments, the fixing mechanism also includes a base frame 3, and a plurality of support frames 1 are sequentially arranged on the base frame 3 along the first direction. Among the plurality of support frames 1, a support frame 1 located at one end of the first direction is a first support frame 1a, and the remaining support frames 1 are second support frames 1b. The first support frame 1a is slidably or fixedly connected to the base frame 3, and each second support frame 1b is slidably connected to the base frame 3. When the first support frame 1a is fixedly connected to the base, it can serve as a reference benchmark for sliding adjustment of the plurality of second support frames 1b, so that the fixing mechanism can more efficiently adjust the support length of the fixed member. In this way, the first direction can be configured as the length direction of the base frame 3, and adjacent support frames 1 can slide relative to each other, and the spacing between two adjacent support frames 1 can be increased or decreased to form different support lengths, which is suitable for fixing fixed members of different lengths.

[0055] like Figure 1 and Figure 4 As shown, in some embodiments, a guide rail 31 is provided on the base frame 3, and the guide rail 31 is provided along the first direction. A slider is provided at the bottom of the second support member, and the slider is slidably connected to the guide rail 31. With such a configuration, the guide rail 31 can guide and limit the sliding of the slider and the support frame 1, and the distance between adjacent support frames 1 is convenient to adjust, thereby reducing the vertical position deviation of the support frame 1 in the first direction, and the positions of the beams 11 of adjacent support frames 1 can be aligned with each other, thereby reducing the operation jam when the fixed parts are placed on multiple beams 11.

[0056] The base frame 3 and the support frame 1 can both be aluminum frame structures, and the base frame 3 and the support frame can be connected by a plurality of rods 32, and adjacent rods 32 can be connected and fixed by bolts. In order to improve the connection stability, a connecting plate 33 can be connected between adjacent rods 32, and the connecting plate 33 can be designed as a triangular structure, and the right angle sides of the connecting plate 33 can be fixedly connected to the side walls of adjacent rods 32 respectively. The rods 32 of the base frame 3 can be square tubes, and the cross-sectional size of the rods 32 can be selected as 40 mm × 40 mm, and the length can be selected as 300 mm-450 mm.

[0057] like Figure 1 to Figure 2 As shown, an embodiment of the second aspect of the utility model provides a test fixture, including an air-conditioning core and the above-mentioned fixing mechanism, the part to be fixed is configured as an air-conditioning core, and the air-conditioning core is fixed on the crossbeam 11 by a clamping member 2. In this way, this embodiment can form multiple supporting points by setting a plurality of support frames 1, and the crossbeams 11 of the plurality of support frames 1 support and suspend the air-conditioning core from the ground or other placement surfaces, thereby reducing the contact between the air-conditioning core and the placement surface. And by setting the clamping member 2 to press the air-conditioning core on the crossbeam 11, the shaking and wear of the air-conditioning core during the blasting test and the impact resistance test are reduced. Moreover, after the air-conditioning core is clamped and fixed by the crossbeam 11 and the clamping member 2, the clamping and fixing method of the air-conditioning core on the whole vehicle can be simulated, so that the test conditions are more in line with the actual use conditions, and the accuracy of the test results is improved.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A fixing mechanism, characterized in that: The fixing mechanism comprises: A plurality of support frames (1), the plurality of support frames (1) being arranged in sequence along a first direction, the support frames (1) being provided with a crossbeam (11), the crossbeam (11) being used to support a part to be fixed and suspend the part to be fixed in the air; A pressing piece (2), the pressing piece (2) being movably connected to the support frame (1), the pressing piece (2) being able to move toward the crossbeam (11) and press the piece to be fixed onto the crossbeam (11).

2. The fixing mechanism according to claim 1, characterized in that: The support frame (1) comprises a plurality of vertical rods (12), both ends of the cross beam (11) are connected to the vertical rods (12), and the cross beam (11) is suspended.

3. The fixing mechanism according to claim 2, characterized in that: The support frame (1) further comprises a flexible member (13), wherein the flexible member (13) is arranged on the crossbeam (11), and the flexible member (13) is used to contact the surface of the member to be fixed.

4. The fixing mechanism according to claim 2, characterized in that: The support frame (1) further comprises a fixed beam (14), both ends of which are connected to the vertical rods (12), the fixed beam (14) being arranged above the cross beam (11) in parallel and at intervals, and the pressing member (2) being movably connected to the fixed beam (14).

5. The fixing mechanism according to claim 4, characterized in that: The pressing member (2) comprises: a screw rod (21), the screw rod (21) having a first end and a second end, the screw rod (21) being threadedly connected to the fixed beam (14); A driving member (22), the driving member (22) being drivingly connected to the first end of the screw rod (21), and the driving member (22) being capable of driving the screw rod (21) to rotate; A pressing block (23) is arranged at the second end of the screw rod (21) and is used to press the part to be fixed.

6. The fixing mechanism according to claim 5, characterized in that: At least the portion of the pressing block (23) that presses against the part to be fixed is flexible.

7. The fixing mechanism according to claim 5, characterized in that: The driving member (22) is configured as a handle, and the handle includes a first connecting rod (221) and a second connecting rod (222), the first connecting rod (221) and the second connecting rod (222) are cross-connected, and the screw rod (21) is connected to the intersection of the first connecting rod (221) and the second connecting rod (222).

8. The fixing mechanism according to claim 1, characterized in that: The fixing mechanism further comprises a base frame (3), and a plurality of the support frames (1) are sequentially arranged on the base frame (3) along the first direction; Among the multiple support frames (1), one support frame (1) located at one end of the first direction is a first support frame (1a), and the other support frames (1) are second support frames (1b); the first support frame (1a) is slidably or fixedly connected to the base frame (3), and each of the second support frames (1b) is slidably connected to the base frame (3).

9. The fixing mechanism according to claim 8, characterized in that: A guide rail (31) is arranged on the base frame (3), and the guide rail (31) is arranged along the first direction. A sliding block is arranged at the bottom of the support frame (1), and the sliding block is slidably connected to the guide rail (31).

10. A test fixture, comprising an air-conditioning core and the fixing mechanism according to any one of claims 1 to 9, wherein the part to be fixed is configured as the air-conditioning core, and the air-conditioning core is fixed on a crossbeam (11) by a pressing member (2).

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