Impact device for impact test

Abstract

The utility model belongs to the technical field of impact test equipment, and discloses an impact device for an impact test. The impact device for the impact test comprises a table body, a support, an impact part, an air cylinder, a guide limiting part and an adjusting assembly, wherein the support is provided with a penetrating cavity; the impact piece movably penetrates through the penetrating cavity, and a sliding groove is formed in the impact piece in the length direction; the cylinder is used for driving the impact piece to move along the length direction and impact the test piece; the guide limiting piece is arranged on the support and is in sliding connection with the sliding groove; the adjusting assembly comprises an adjusting part and a pneumatic connector, the impact part is sleeved with the adjusting part, the adjusting part is located in the penetrating cavity, a gap is formed between the adjusting part and the inner wall of the penetrating cavity, and the pneumatic connector is fixed to the support in a penetrating mode and communicates with the gap; the pneumatic connector is used for introducing gas and extruding the adjusting piece so as to change the extrusion force of the adjusting piece on the impact piece. According to the utility model, the acceleration of the impact rod can be conveniently adjusted, so that impact forces with different magnitudes can be provided for a test piece to meet test requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of impact test equipment, in particular to an impact device used for impact testing. Background Art

[0002] Impact testing is primarily used to test a product's ability to withstand impact, enabling it to better adapt to operating conditions and thereby extend its lifespan. Impact testing is primarily performed by applying varying impact forces to the test piece.

[0003] Existing impact devices used for impact testing consist of a cylinder and an impact rod. The cylinder's piston rod is connected to the impact rod, driving its movement. Existing impact devices for impact testing can vary the impact force on the test piece by changing the impact rod's acceleration. However, directly adjusting the impact rod's acceleration by controlling the cylinder's air pressure or gas flow rate is difficult to control and also complicates the cylinder's structure.

[0004] Therefore, there is an urgent need for an impact device for impact testing to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an impact device for impact testing, which is convenient for adjusting the acceleration of the impact rod, thereby providing different impact forces to the test piece to meet the testing requirements of the test piece.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] An impact device for impact testing, comprising:

[0008] Taiwan body,

[0009] A support is fixed to the platform, and the support is provided with a through cavity;

[0010] An impact piece is movably arranged in the penetration cavity, and the impact piece is provided with a sliding groove along the length direction;

[0011] a cylinder fixed to the platform, the cylinder being connected to the impact piece and being used to drive the impact piece to move along the length direction and impact the test piece;

[0012] A guide limiter is provided on the support, and the guide limiter is slidably connected to the slide groove;

[0013] The adjustment component includes an adjustment part and a pneumatic joint. The adjustment part is sleeved on the outside of the impact part and is located in the penetration cavity. There is a gap between the adjustment part and the inner wall of the penetration cavity. The pneumatic joint is penetrated and fixed to the support and communicated with the gap. The pneumatic joint is used to pass gas and squeeze the adjustment part to change the extrusion force of the adjustment part on the impact part.

[0014] In some possible embodiments, the guide limiter is a circular block, the support is provided with a first installation cavity, the first installation cavity is communicated with the penetration cavity, the circular block is rotatably disposed in the first installation cavity, and is slidably connected to the slide groove.

[0015] In some possible embodiments, the penetration cavity includes a first chamber, the adjusting member is located in the first chamber, and the adjusting assembly also includes two positioning rings and two sealing rings, the two positioning rings are arranged at both ends of the adjusting member, the two positioning rings are sleeved on the outside of the impact member, and both are clamped with the first chamber; the two sealing rings are arranged in a one-to-one correspondence with the two positioning rings, the sealing rings are sleeved on the positioning rings, and abut against the inner wall of the first chamber.

[0016] In some possible embodiments, the penetration cavity includes a second chamber, the guide limit member is slidingly connected to the slide groove through the second chamber, and the impact device for impact testing also includes two guide sleeves, the two guide sleeves are respectively clamped at two ports of the second chamber, and the guide sleeves are slidingly connected to the impact member.

[0017] In some possible implementations, the impact member includes an impact rod and an impact head. The impact head is provided at the end of the impact rod for contacting the test piece. The impact rod is a hollow structure, and a plurality of weight-reducing holes are provided on the outer wall.

[0018] In some possible implementations, one end of the impact rod is threadedly connected to the impact head, and the other end of the impact rod is magnetically connected and clamped to the piston rod of the cylinder.

[0019] In some possible implementations, a buffer pad is provided at one end of the support away from the cylinder, and the impact head can contact the buffer pad.

[0020] In some possible implementations, the impact member includes an impact rod and an impact head, and the impact device for the impact test further includes an acceleration sensor, which is fixed to the support and is used to measure the acceleration of the impact head.

[0021] In some possible embodiments, the support is provided with a second mounting cavity, which is communicated with the penetration cavity. The impact device for the impact test also includes a magnetic scale for measuring the displacement of the impact member. The magnetic scale includes a magnetic head and a magnetic scale. The magnetic head is fixed in the second mounting cavity, and the magnetic scale is fixed to the impact member.

[0022] In some possible implementations, the support includes a mounting seat and an adjustment seat, the mounting seat is fixed to the platform, and the adjustment seat is detachably connected to one side of the mounting seat for mounting the adjustment assembly.

[0023] Beneficial effects of the utility model:

[0024] The impact device for impact testing provided by the present invention includes a platform, a support, an impact piece, a cylinder, a guide limiter and an adjustment assembly. The structure of the impact device for impact testing is relatively simple. The impact piece is pushed by the cylinder, generating a positive thrust on the impact piece and the pushing speed is constant. At the same time, the adjusting piece is squeezed by introducing gas of different pressures into the pneumatic joint to change the squeezing force of the adjusting piece on the impact piece, thereby generating different friction forces. By changing the friction force, the resultant force acting on the impact piece is changed, thereby generating different accelerations, and thus providing different impact forces to the test piece to meet the test requirements of the test piece. The acceleration of the impact rod can be adjusted by simply adjusting the pressure of the gas introduced into the pneumatic joint, making the adjustment convenient. In addition, the guide limiter is slidably connected to the slide groove of the impact piece to prevent the impact piece from shaking or rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a cross-sectional view of the impact device for impact testing provided by the present utility model;

[0026] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic structural diagram from a first perspective of the impact device for impact testing provided by the present invention;

[0028] Figure 4 This is a schematic structural diagram from a second perspective of the impact device for impact testing provided by the present invention;

[0029] Figure 5 This is a schematic structural diagram of the impact device for impact testing provided by the utility model from a third perspective.

[0030] In the picture:

[0031] 1. Support; 11. Penetrating cavity; 111. First cavity; 112. Second cavity; 12. First mounting cavity; 13. Second mounting cavity; 14. Mounting seat; 141. First seat body; 142. First end plate; 15. Adjusting seat; 151. Second seat body; 152. Second end plate;

[0032] 2. Impact member; 21. Slide groove; 22. Impact rod; 221. Weight reduction hole; 222. First connecting block; 223. Second connecting block; 23. Impact head;

[0033] 3. Guide limiter;

[0034] 4. Adjustment assembly; 41. Adjustment piece; 42. Pneumatic joint; 43. Positioning ring; 44. Sealing ring;

[0035] 5. Guide sleeve; 6. Buffer pad; 7. Acceleration sensor; 8. Magnetic head. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0037] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0040] like Figures 1 to 5 As shown, the utility model provides an impact device for impact testing, which can be used in high-speed impact experiments to test the reliability and damage of test pieces under different working conditions, and has a short travel distance, strong controllability, and high repeatability. In addition, it adopts a split design for easy installation. The impact device for impact testing includes a platform, a support 1, an impact piece 2, a cylinder, a guide limiter 3, and an adjustment assembly 4. The support 1 is fixed to the platform, and the support 1 is provided with a through-hole 11; the impact piece 2 is movably provided in the through-hole 11, and the impact piece 2 is provided with a slide groove 21 along the length direction; the cylinder is fixed to the platform and connected to the impact piece 2, and is used to drive the impact piece 2 to move along the length direction and impact the test piece; the guide limiter 3 is provided on the support 1, and the guide limiter 3 is slidably connected to the slide groove 21. The adjustment assembly 4 includes an adjustment member 41 and a pneumatic connector 42. The adjustment member 41 is positioned over the impact member 2 and within the bore 11. A gap is defined between the adjustment member 41 and the inner wall of the bore 11. The pneumatic connector 42 is fixed to the support 1 and communicates with the gap. The pneumatic connector 42 is used to introduce gas and compress the adjustment member 41, thereby varying the pressure exerted by the adjustment member 41 on the impact member 2. Specifically, the pneumatic connector 42 is connected to an external air source, which controls the pressure of the incoming gas.

[0041] The structure of the impact device used for impact testing is relatively simple. The impact member 2 is pushed by the cylinder, generating a forward thrust on the impact member 2 and a constant pushing speed. At the same time, by introducing gas of different pressures into the pneumatic joint 42 to squeeze the adjusting member 41, the squeezing force of the adjusting member 41 on the impact member 2 is changed, thereby generating different friction forces. By changing the friction force, the resultant force acting on the impact member 2 is changed, thereby generating different accelerations, and thus providing different impact forces to the test piece to meet the test requirements of the test piece. The acceleration of the impact rod 22 can be adjusted by simply adjusting the pressure of the gas introduced into the pneumatic joint 42, making adjustment convenient. In addition, the guide limit member 3 is slidably connected to the slide groove 21 of the impact member 2 to prevent the impact member 2 from shaking or rotating.

[0042] Optionally, in this embodiment, the guide stopper 3 is a circular block. The support 1 is provided with a first mounting cavity 12, which is in communication with the through-hole 11. The circular block is rotatably disposed within the first mounting cavity 12 and is slidably connected to the chute 21. The rotation of the circular block within the first mounting cavity 12 reduces friction between the circular block and the chute 21 during sliding movement, thereby preventing an impact on the acceleration of the impact member 2. In other embodiments, the guide stopper 3 is fixed within the first mounting cavity 12.

[0043] Optionally, in this embodiment, the penetration cavity 11 includes a first chamber 111, the adjustment member 41 is located in the first chamber 111, and the adjustment assembly 4 further includes two positioning rings 43 and two sealing rings 44. The two positioning rings 43 are provided at both ends of the adjustment member 41, the two positioning rings 43 are sleeved outside the impact member 2, and both are engaged with the first chamber 111; the two sealing rings 44 are provided in a one-to-one correspondence with the two positioning rings 43, the sealing rings 44 are sleeved on the positioning rings 43, and abut against the inner wall of the first chamber 111. The provision of the two positioning rings 43 and the two sealing rings 44 not only provides a seal to prevent gas from escaping, but also limits the position of the adjustment member 41.

[0044] Optionally, in this embodiment, the penetration cavity 11 includes a second chamber 112, the guide limiter 3 is slidably connected to the slide groove 21 through the second chamber 112, and the impact device for the impact test further includes two guide sleeves 5, which are respectively clamped at two ends of the second chamber 112 and slidably connected to the impact member 2. The provision of the guide sleeves 5 reduces the contact between the impact member 2 and the inner wall of the second chamber 112, thereby avoiding affecting the acceleration of the impact member 2.

[0045] Optionally, in this embodiment, the impact member 2 includes an impact rod 22 and an impact head 23. The impact head 23 is provided at the end of the impact rod 22 for contacting the test piece. The impact rod 22 is a hollow structure, and a plurality of weight-reducing holes 221 are provided on the outer wall. This arrangement ensures the structural strength of the impact member 2 while saving costs. Specifically, the impact head 23 is a hemispherical structure, and the impact rod 22 is a round rod. The diameter of the hemispherical structure is larger than the diameter of the round rod. Without increasing the diameter of the round rod, the contact area between the impact head 23 and the test piece is increased, thereby saving costs and occupying space. Optionally, the material of the impact member 2 is a special alloy.

[0046] Optionally, in this embodiment, one end of the impact rod 22 is threadedly connected to the impact head 23, while the other end of the impact rod 22 is magnetically connected and snap-fitted to the piston rod of the cylinder. The threaded connection between the impact head 23 and the impact rod 22 facilitates replacement of the impact head 23 if damaged, and ensures a secure and reliable connection between the impact head 23 and the impact rod 22. In other embodiments, the impact head 23 and the impact rod 22 may be integrated. The magnetic connection and snap-fitting of the impact rod 22 and the piston rod of the cylinder facilitates assembly and disassembly, improving the secureness and tightness of the connection between the two.

[0047] Specifically, a first connecting block 222 and a second connecting block 223 are welded to each end of the impact rod 22. The first connecting block 222 is threadedly connected to the impact head 23. The piston rod has an inner hole, and the second connecting block 223 is magnetically connected and snapped into the inner hole. This welded connection ensures the structural stability of the impact rod 22. Furthermore, when the piston rod is installed on the second connecting block 223, a cold fit method is used: first, the second connecting block 223 is cooled, and then the inner hole of the piston rod is snapped into the outside of the second connecting block 223.

[0048] Optionally, in this embodiment, a buffer pad 6 is provided at one end of the support 1 away from the cylinder, and the impact head 23 can contact the buffer pad 6. When the piston rod of the cylinder does not have time to brake, the buffer pad 6 absorbs the impact force, reducing damage to the impact head 23. Figure 3 As shown, the buffer pad 6 is an annular structure, and two buffer pads 6 are arranged around the port of the support 1 at intervals, and the buffer pad 6 is connected to the support 1 by screws. Such a setting has a simple structure, is convenient for installing the buffer pad 6, and can reduce the contact between the buffer pad 6 and the wall surface of the impact member 2. In addition, as Figure 5 As shown, the impact device for the impact test further includes an acceleration sensor 7 , which is fixed to the support 1 and is used to measure the acceleration of the impact head 23 , so as to facilitate the collection of test data.

[0049] Optionally, in this embodiment, the support 1 is provided with a second mounting cavity 13, which is in communication with the penetration cavity 11. The impact device used for the impact test also includes a magnetic scale for measuring the displacement of the impact member 2, facilitating the collection of test data. The magnetic scale includes a magnetic head 8 and a magnetic scale. The magnetic head 8 is fixed within the second mounting cavity 13, and the magnetic scale is fixed to the impact member 2. The magnetic head 8 reads the magnetization signal on the magnetic scale and converts it into an electrical signal to measure the displacement of the impact member 2.

[0050] Alternatively, as Figure 2As shown, the support 1 includes a mounting base 14 and an adjustment base 15. The mounting base 14 is fixed to the platform. The adjustment base 15 is detachably connected to one side of the mounting base 14 for mounting the adjustment assembly 4. The adjustment base 15 is detachably connected to the mounting base 14 for easy assembly and disassembly. In this embodiment, the mounting base 14 is fixed to the platform by screws, and the adjustment base 15 is also fixed to the mounting base 14 by screws. Optionally, the support 1 is made of steel for high strength.

[0051] Optionally, the mounting seat 14 includes a first base body 141 and a first end plate 142 provided with a second cavity 112, the first base body 141 is a cubic structure, the first end plate 142 is a square plate, the first end plate 142 is welded to the first base body 141, the second mounting cavity 13 is a cubic structure, the second mounting cavity 13 is provided in the first base body 141, and passes through an edge of the first base body 141. The above arrangement facilitates processing of the mounting seat 14 and has a stable structure. Optionally, in this embodiment, the adjustment seat 15 includes a second base body 151 and a second end plate 152 provided with a first cavity 111, the second base body 151 is fixedly connected to the first base body 141 by screws, and the second end plate 152 is fixedly connected to the second base body 151 by screws, so as to facilitate the disassembly and assembly of the adjustment seat 15.

[0052] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An impact device for impact testing, characterized in that: include: Taiwan body, A support (1) is fixed to the platform, and the support (1) is provided with a through cavity (11); An impact member (2) is movably arranged in the penetration cavity (11), and a sliding groove (21) is provided on the impact member (2) along the length direction; a cylinder fixed to the platform, the cylinder being connected to the impact piece (2) and being used to drive the impact piece (2) to move along the length direction and impact the test piece; A guide limiting member (3) is provided on the support (1), and the guide limiting member (3) is slidably connected to the slide groove (21); An adjusting assembly (4) comprises an adjusting member (41) and a pneumatic joint (42), wherein the adjusting member (41) is sleeved outside the impact member (2) and located in the penetration cavity (11), a gap is formed between the adjusting member (41) and the inner wall of the penetration cavity (11), and the pneumatic joint (42) is penetrated and fixed to the support (1) and communicated with the gap; the pneumatic joint (42) is used to introduce gas and squeeze the adjusting member (41) to change the squeezing force of the adjusting member (41) on the impact member (2).

2. The impact device for impact testing according to claim 1, characterized in that: The guide limiter (3) is a circular block, the support (1) is provided with a first installation cavity (12), the first installation cavity (12) is communicated with the penetration cavity (11), the circular block is rotatably arranged in the first installation cavity (12), and is slidably connected to the slide groove (21).

3. The impact device for impact testing according to claim 1, characterized in that: The penetration cavity (11) includes a first chamber (111), the adjusting member (41) is located in the first chamber (111), and the adjusting assembly (4) also includes two positioning rings (43) and two sealing rings (44), the two positioning rings (43) are arranged at both ends of the adjusting member (41), the two positioning rings (43) are sleeved outside the impact member (2), and are both engaged with the first chamber (111); the two sealing rings (44) are arranged in a one-to-one correspondence with the two positioning rings (43), the sealing rings (44) are sleeved on the positioning rings (43), and abut against the inner wall of the first chamber (111).

4. The impact device for impact testing according to claim 1, characterized in that: The penetration cavity (11) includes a second chamber (112), the guide limiter (3) is slidably connected to the slide groove (21) through the second chamber (112), and the impact device for the impact test also includes two guide sleeves (5), the two guide sleeves (5) are respectively clamped at two ports of the second chamber (112), and the guide sleeves (5) are slidably connected to the impact member (2).

5. The impact device for impact testing according to claim 1, characterized in that: The impact piece (2) comprises an impact rod (22) and an impact head (23). The impact head (23) is arranged at the end of the impact rod (22) and is used to contact the test piece. The impact rod (22) is a hollow structure, and a plurality of weight-reducing holes (221) are provided on the outer wall.

6. The impact device for impact testing according to claim 5, characterized in that: One end of the impact rod (22) is threadedly connected to the impact head (23), and the other end of the impact rod (22) is magnetically connected and clamped to the piston rod of the cylinder.

7. The impact device for impact testing according to claim 5, characterized in that: A buffer pad (6) is provided at one end of the support (1) away from the cylinder, and the impact head (23) can contact the buffer pad (6).

8. The impact device for impact testing according to claim 1, characterized in that: The impact member (2) includes an impact rod (22) and an impact head (23). The impact device for the impact test also includes an acceleration sensor (7). The acceleration sensor (7) is fixed to the support (1) and is used to measure the acceleration of the impact head (23).

9. The impact device for impact testing according to claim 1, characterized in that: The support (1) is provided with a second mounting cavity (13), the second mounting cavity (13) being communicated with the penetration cavity (11), the impact device for the impact test further comprising a magnetic scale for measuring the displacement of the impact member (2), the magnetic scale comprising a magnetic head (8) and a magnetic scale, the magnetic head (8) being fixed in the second mounting cavity (13), and the magnetic scale being fixed to the impact member (2).

10. The impact device for impact testing according to any one of claims 1 to 9, characterized in that: The support (1) comprises a mounting seat (14) and an adjustment seat (15), wherein the mounting seat (14) is fixed to the platform, and the adjustment seat (15) is detachably connected to one side of the mounting seat (14) for mounting the adjustment assembly (4).

Images