Pendulum impact testing machine

Abstract

The utility model relates to a pendulum bob type impact testing machine which comprises a base, a mounting column, a pendulum bob, a pendulum bob releasing device, a sample support and a material blocking cover, the mounting column is detachably mounted on the base, a rotating shaft seat is arranged on the mounting column, the pendulum bob comprises a swinging rod and a hammer head, one end of the swinging rod is connected to the rotating shaft seat through a rotating shaft, the hammer head is detachably mounted at the other end of the swinging rod, and the pendulum bob releasing device is mounted on the mounting column. A plurality of mounting positions for mounting the pendulum bob release device are arranged in the rotating range, corresponding to the pendulum rod, of the mounting column, the sample support is detachably mounted on the base and / or the mounting column, the material blocking cover is hinged to the base, and the material blocking cover can rotate to the shielding position and the storage position; and the material blocking cover can block the sample popped out by the impact of the pendulum bob. According to the pendulum impact testing machine, the pre-raising angle of the pendulum can be flexibly adjusted, pure mechanical operation is achieved, the fault rate is low, storage can be convenient, and the storage efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment for the impact resistance of materials, in particular to a pendulum impact testing machine. Background Art

[0002] The pre-lift angle position of a pendulum impact testing machine is an important index for determining the impact speed of the pendulum. The two international standards ISO179-2000 "Determination of Pendulum Impact Properties of Plastics" and ISO180-2000 "Determination of Izod Impact Strength of Plastics" stipulate that the pendulum impact testing machine should have impact speeds of 2.9 m / s, 3.5 m / s, and 3.8 m / s. The attainment of these speeds depends on the length of the pendulum and the position of the pre-lift angle where the pendulum is placed. Currently, the existing technology mainly uses an electric control method to make the pendulum at the required pre-lift angle position. However, the testing machine set in this way has a high cost and a high failure rate of electric control failure. On the other hand, the existing testing machines are not convenient for storage. When storing, multiple components need to be removed, and the use efficiency cannot be improved.

[0003] Therefore, it is necessary to provide a technical means to solve the above defects. Summary of the Utility Model

[0004] Based on this, the purpose of the utility model is to overcome the deficiencies of the prior art and provide a pendulum impact testing machine.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0006] A pendulum impact testing machine, which comprises:

[0007] A base, a mounting column, a pendulum, a pendulum release device, a specimen support, and a baffle cover;

[0008] The mounting column is detachably mounted on the base. A rotating shaft seat is provided on the mounting column. The pendulum comprises a pendulum rod and a hammer head. One end of the pendulum rod is connected to the rotating shaft seat through a rotating shaft, and the other end is detachably mounted with the hammer head. The pendulum release device is mounted on the mounting column and is used to keep the pendulum rod at a preset rotation angle. A plurality of mounting positions for mounting the pendulum release device are provided on the mounting column corresponding to the rotation range of the pendulum rod. The specimen support is detachably mounted on the base and / or the mounting column and is used to place the specimen to be tested. The baffle cover is hinged to the base and can be rotated to a shielding position and a storage position. When the baffle cover is in the shielding position, the baffle cover can shield the specimen ejected by the impact of the pendulum.

[0009] As an implementation manner, a rotary encoder is built in the mounting column, and the input shaft of the rotary encoder is fixedly connected with the rotating shaft.

[0010] As an implementation manner, the pendulum impact testing machine further includes a display panel, and the display panel is mounted on the mounting column and electrically connected to the rotary encoder.

[0011] As an implementation manner, the pendulum release device includes a base, a baffle, a linear bearing, a connecting rod, a locking tongue, and a release handle. The baffle is spaced on one side of the base and connected to the base through the connecting rod. The linear bearing is fixed on the other side of the base. The locking tongue is in a columnar structure. One end of the locking tongue is a locking end, and the other end is an operating end. The locking end of the locking tongue passes through the baffle, the base, and the linear bearing in sequence and then extends out. The middle of the release handle is hinged to the baffle, and the end of the release handle is hinged to the operating end of the locking tongue.

[0012] As an implementation manner, the pendulum release device further includes a spring. The spring is sleeved on the locking tongue, and both ends of the spring respectively abut against the baffle and a retaining ring on the locking tongue, so that the locking end maintains an extended state.

[0013] As an implementation manner, the locking end of the locking tongue is provided with an inclined surface, and the inclined surface is used for sliding cooperation with the pendulum rod.

[0014] As an implementation manner, a counterweight is mounted on the hammer head, and the counterweights are symmetrically arranged on opposite sides of the hammer head.

[0015] As an implementation manner, the side of the hammer head facing the specimen forms an included angle with a vertical plane at a preset angle.

[0016] As an implementation manner, an adjustment block is further provided on the base. The specimen support includes a first support and a second support. The first support includes a left placement seat and a right placement seat. The left placement seat is mounted on the adjustment block, and the right placement seat is mounted on the mounting column. There is a space for the pendulum to pass through between the left placement seat and the right placement seat. The left placement seat and the right placement seat are used for placing the specimen horizontally, and the second support is used for clamping the specimen to place the specimen vertically.

[0017] As an implementation manner, a plurality of feet with height adjustment functions are provided on the bottom side of the base.

[0018] The pendulum impact testing machine of this embodiment can not only flexibly adjust the pre-elevation angle of the pendulum, has pure mechanical operation, low failure rate, but also can be conveniently stored with high storage efficiency.

[0019] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0020] Figure 1 This is a schematic structural diagram of a pendulum impact testing machine from one perspective in an embodiment of the present application;

[0021] Figure 2 This is a schematic structural diagram of a pendulum impact testing machine from another perspective in an embodiment of the present application;

[0022] Figure 3 This is a schematic structural diagram of a pendulum impact testing machine in an embodiment of the present application when a first support is installed and the pendulum is hidden;

[0023] Figure 4 This is a schematic structural diagram of a pendulum with a first type of hammer head in an embodiment of the present application;

[0024] Figure 5 This is a schematic structural diagram of a pendulum impact testing machine in an embodiment of the present application when a second support is installed and a second hammer head is installed;

[0025] Figure 6 This is a schematic structural diagram of a pendulum with a second type of hammer head in an embodiment of the present application;

[0026] Figure 7 This is a schematic structural diagram of the second support and the specimen in an embodiment of the present application;

[0027] Figure 8 This is a schematic structural diagram of a pendulum release device in an embodiment of the present application;

[0028] Explanation of reference numerals:

[0029] 1. Base; 11. Adjusting block; 12. Support feet; 2. Mounting column; 21. Rotating shaft seat; 3. Pendulum; 31. Pendulum rod; 32. Hammer head; 321. Counterweight block; 4. Pendulum release device; 41. Base; 42. Baffle; 43. Linear bearing; 44. Connecting rod; 45. Lock tongue; 451. Locking end; 452. Operating end; 453. Retaining ring; 454. Inclined surface; 46. Release handle; 47. Spring; 5. Specimen support; 51. First support; 511. Left placement seat; 512. Right placement seat; 52. Second support; 6. Feeding cover; 7. Specimen; 8. Display panel. Detailed implementation manners

[0030] To further illustrate each embodiment, the present utility model provides accompanying drawings. These accompanying drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0032] Please refer to Figures 1 to 6 , this embodiment provides a pendulum impact testing machine, which includes: a base 1, a mounting column 2, a pendulum 3, a pendulum release device 4, a specimen support 5, and a material baffle 6.

[0033] The mounting column 2 is detachably mounted on the base 1. A rotating shaft seat 21 is provided on the mounting column 2. The pendulum 3 includes a pendulum rod 31 and a hammer head 32. One end of the pendulum rod 31 is connected to the rotating shaft seat 21 through a rotating shaft, and the other end is detachably mounted with the hammer head 32. Thus, by rotating the pendulum rod 31 to a preset angle, the hammer head 32 can be made to be at a preset height. When the pendulum rod 31 is released, the hammer head 32 can strike the specimen 7 at a preset speed.

[0034] The pendulum release device 4 is mounted on the mounting column 2 and is used to hold the pendulum rod 31 so that it is in a preset rotation angle. By operating the pendulum release device 4, the pendulum rod 31 can be released, causing the pendulum 3 to fall and strike the specimen 7.

[0035] A plurality of mounting positions for mounting the pendulum release device 4 are provided on the mounting column 2 corresponding to the rotation range of the pendulum rod 31. Thus, by disassembling the pendulum release device 4, the mounting position of the pendulum release device 4 can be flexibly adjusted to adjust the striking speed required for the pendulum 3.

[0036] The specimen support 5 is detachably mounted on the base 1 and / or the mounting column 2 and is used to place the specimen 7 to be tested. The material baffle 6 is hinged to the base 1 and can be rotated to a shielding position and a storage position. When the material baffle 6 is in the shielding position, the material baffle 6 can shield the specimen 7 ejected by being struck by the pendulum 3, preventing the specimen 7 from being ejected and causing unnecessary damage. When it is necessary to store the pendulum impact testing machine, the material baffle 6 can be rotated to the storage position.

[0037] It can be seen from the above settings that the pendulum impact testing machine of this embodiment is provided with multiple installation positions on its installation column 2, so that the position of the pendulum releasing device 4 can be flexibly adjusted, so that the pendulum 3 can hit the sample on the sample support 5 at various speeds. During the test, it is only necessary to place the sample on the sample support, and then rotate the pendulum 31 to the position of the pendulum releasing device 4, so that the pendulum releasing device 4 holds the pendulum 31, and then operate the pendulum releasing device 4 to release the pendulum 3, so that the hammer head 32 of the pendulum 3 hits the sample 7.

[0038] In addition, since the pendulum 3, the pendulum release device 4 and the sample support 5 are all installed on the mounting column 2, when storage is needed, the mounting column 2 can be directly removed and laid flat, and the material blocking cover 6 can be rotated to the storage position to complete the storage without disassembling many parts.

[0039] The pendulum impact tester of this embodiment can flexibly adjust the pre-elevation angle of the pendulum 3, is purely mechanically operated, has a low failure rate, and can be easily stored with high storage efficiency.

[0040] In order to conveniently know the current rotation angle of the swing rod 31, preferably, the mounting column 2 of this embodiment is built with a rotary encoder, and the input shaft of the rotary encoder is fixedly connected to the rotating shaft. By connecting the rotary encoder to the rotating shaft, the rotary encoder can record the rotation angle of the rotating shaft, so as to know the current rotation angle of the swing rod 31. Preferably, the pendulum impact tester of this embodiment also includes a display panel 8, which is mounted on the mounting column 2 and electrically connected to the rotary encoder. The display panel 8 can display the value of the rotary encoder, allowing the operator to observe more intuitively.

[0041] It can be understood that the hammer head 32 of the pendulum 3 of this embodiment is detachably mounted on one end of the pendulum rod 31. Therefore, the impact test of different degrees can be performed on the sample 7 by replacing different hammer heads 32, which is convenient and quick. Figure 4 As shown, a style of a hammer head 32 is shown, such as Figure 5 and 6 , another style of hammer head 32 is shown, wherein the side of the hammer head 32 facing the sample 7 forms an angle of a preset angle with the vertical plane, so that the contact area between the hammer head 32 and the sample 7 can be reduced when hitting the sample 7. Preferably, a counterweight block 321 is installed on the hammer head 32, and the counterweight block 321 is symmetrically arranged on opposite sides of the hammer head 32 to adjust the force of the pendulum 3 when hitting.

[0042] Similarly, the sample holder 5 may also be arranged in a variety of ways to place the sample 7 and implement different tests, for example, Figure 3 , 5As shown in FIGS. 5 and 6, in this embodiment, an adjustment block 11 is further provided on the base 1. The specimen support 5 includes a first support 51 and a second support 52. The first support 51 includes a left placement seat 511 and a right placement seat 512. The left placement seat 511 is installed on the adjustment block 11, and the right placement seat 512 is installed on the mounting post 2. There is a passing space for the pendulum 3 between the left placement seat 511 and the right placement seat 512. The left placement seat 511 and the right placement seat 512 are used to place the specimen 7 horizontally, so that when the pendulum 3 swings down, it can strike the specimen 7 placed horizontally on the left placement seat 511 and the right placement seat 512. The left placement seat 511 can be detachably connected to the adjustment block 11, so that the distance between it and the right placement seat 512 can be adjusted to fit specimens 7 of different sizes. The second support 52 is used to clamp the specimen 7 to place the specimen 7 vertically. The first support 51 and the second support 52 can be installed in the testing machine at the same time, or only one of them can be installed.

[0043] Specifically, as Figure 8 shown, the pendulum release device 4 in this embodiment includes a base 41, a baffle 42, a linear bearing 43, a connecting rod 44, a locking tongue 45 and a release handle 46. The baffle 42 is spaced on one side of the base 41 and is connected to the base 41 through the connecting rod 44. The linear bearing 43 is fixed on the other side of the base 41. The locking tongue 45 has a columnar structure. One end of the locking tongue 45 is a locking end 451, and the other end is an operating end 452. The locking end 451 of the locking tongue 45 passes through the baffle 42, the base 41 and the linear bearing 43 in sequence and then extends out. The middle of the release handle 46 is hinged to the baffle 42, and the end of the release handle 46 is hinged to the operating end 452 of the locking tongue 45. Thus, by operating the release handle 46 in one direction, the locking end 451 of the locking tongue 45 can be extended from the linear bearing 43 to limit the pendulum rod 31, so that the pendulum rod 31 is kept at a preset rotation angle. By operating the release handle 46 in the other direction, the locking tongue 45 can be retracted into the linear bearing 43, thereby releasing the pendulum rod 31. The pendulum release device 4 arranged in this way has a simple structure and is convenient for assembly.

[0044] In order to keep the locking end 451 of the locking tongue 45 always in the extended state from the linear bearing 43, preferably, the pendulum release device 4 further includes a spring 47. The spring 47 is sleeved on the locking tongue 45, and both ends of the spring 47 respectively abut against the baffle 42 and a retaining ring 453 on the locking tongue 45. The spring 47 applies an elastic force to the locking tongue 45 to keep the locking end 451 in the extended state. This can simplify the operation.

[0045] Preferably, a bevel surface 454 is provided at the locking end 451 of the locking tongue 45, and the bevel surface 454 is used for sliding cooperation with the swing rod 31. Thus, when the swing rod 31 moves to the position of the locking tongue 45, it can slide cooperate with the bevel surface 454 of the locking tongue 45, so that the locking tongue 45 can be smoothly retracted into the linear bearing 43 without additional operations, which is convenient for use. After the swing rod 31 passes through the bevel surface 454, the locking tongue 45 automatically returns to the extended state under the elastic force of the spring 47, thereby maintaining the position of the swing rod 31.

[0046] For the convenience of leveling the base 1, preferably, a plurality of feet 12 with height adjustment functions are provided on the bottom side of the base 1. By adjusting the heights of the respective feet 12, the base 1 can be in a horizontal state.

[0047] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the manual self-centering vise of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A pendulum impact testing machine, characterized in that: include: Base, mounting column, pendulum, pendulum release device, specimen support and material shield; The mounting column is detachably mounted on the base, and a rotating shaft seat is provided on the mounting column. The pendulum includes a pendulum rod and a hammer head. One end of the pendulum rod is connected to the rotating shaft seat through a rotating shaft, and the other end is detachably mounted with the hammer head. The pendulum releasing device is mounted on the mounting column, and is used to keep the pendulum rod at a preset rotation angle. A plurality of mounting positions for the pendulum releasing device are provided on the mounting column within the rotation range corresponding to the pendulum rod. The sample support is detachably mounted on the base and / or the mounting column, and is used to place the sample to be tested. The material blocking cover is hinged to the base, and the material blocking cover can be rotated to a shielding position and a storage position. When the material blocking cover is in the shielding position, the material blocking cover can shield the sample ejected by being hit by the pendulum.

2. The pendulum impact testing machine according to claim 1, characterized in that: The mounting column is internally provided with a rotary encoder, and an input shaft of the rotary encoder is fixedly connected to the rotating shaft.

3. The pendulum impact testing machine according to claim 2, characterized in that: It also includes a display panel, which is mounted on the mounting post and electrically connected to the rotary encoder.

4. The pendulum impact testing machine according to claim 1, characterized in that: The pendulum release device includes a base, a baffle, a linear bearing, a connecting rod, a locking tongue and a release handle. The baffle is arranged at an interval on one side of the base and is connected to the base through a connecting rod. The linear bearing is fixed to the other side of the base. The locking tongue is a columnar structure. One end of the locking tongue is a locking end and the other end is an operating end. The locking end of the locking tongue passes through the baffle, the base and the linear bearing in sequence and then extends out. The middle part of the release handle is hinged to the baffle, and the end of the release handle is hinged to the operating end of the locking tongue.

5. The pendulum impact testing machine according to claim 4, characterized in that: The pendulum release device also includes a spring, which is sleeved on the lock tongue, and two ends of the spring respectively abut against the baffle plate and the baffle ring on the lock tongue to keep the locking end in an extended state.

6. The pendulum impact testing machine according to claim 5, characterized in that: The locking end of the locking tongue is provided with an inclined surface, and the inclined surface is used for slidingly matching with the swing rod.

7. The pendulum impact testing machine according to claim 1, characterized in that: The hammer head is provided with a counterweight block, and the counterweight block is symmetrically arranged on two opposite sides of the hammer head.

8. The pendulum impact testing machine according to claim 1, characterized in that: The side of the hammer head facing the sample forms an angle of a preset angle with the vertical plane.

9. The pendulum impact testing machine according to claim 1, characterized in that: An adjustment block is also provided on the base, and the sample support includes a first support and a second support, the first support includes a left placement seat and a right placement seat, the left placement seat is installed on the adjustment block, and the right placement seat is installed on the mounting column, and there is a space for the pendulum to pass between the left placement seat and the right placement seat, the left placement seat and the right placement seat are used to place the sample horizontally, and the second support is used to clamp the sample so that the sample is placed vertically.

10. The pendulum impact testing machine according to any one of claims 1 to 9, characterized in that: A plurality of supporting feet with height adjustment function are arranged on the bottom side of the base.

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