Pendulum impact testing machine for measuring physical properties of materials

Abstract

The utility model discloses a pendulum bob impact testing machine for measuring the physical property of a material in the technical field of pendulum bob impact testing machines, which comprises a fixed frame, a first mounting unit and a locking unit, the first mounting unit is used for rotationally mounting the swing rod on the surface of the fixing frame, and the locking unit is used for locking the position of the swing rod; two pendulum bobs are arranged on the surface of the swing rod, and the second mounting unit is used for respectively mounting the two pendulum bobs on the surface of the swing rod. According to the utility model, the dial is fixedly sleeved on the surface of the mounting pipe, before use, a user needs to rotate the pointing rod and drive the damping ring to rotate, so that the surface of the pointing rod is attached to the surface of the hook rod, and finally, the hook rod is driven to swing while the swing rod swings, so that the force value of the pendulum bob is judged through the pointing after the final movement.

Description

Technical Field

[0001] This utility model relates to the technical field of pendulum impact testing machines, specifically a pendulum impact testing machine for measuring material properties. Background Technology

[0002] A pendulum impact tester is an experimental device used to evaluate the impact resistance of materials. The working principle of the pendulum impact tester is based on the law of conservation of momentum and the principle of energy conversion. During the test, a punch with a certain mass impacts a thin film sample at a certain speed. The punch gradually decelerates due to resistance until it stops, while the thin film sample deforms or cracks due to the impact.

[0003] Currently, when using a pendulum impact testing machine, it is generally necessary to lock the pendulum rod with a self-locking unit to fix the object to be tested on the surface of the operating table. However, if the self-locking unit loosens during the process of the user fixing the object, the pendulum will swing freely under the action of gravity, thereby injuring the user. Therefore, a new type of pendulum impact testing machine for measuring material properties is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that when using a pendulum impact testing machine, it is generally necessary to lock the pendulum rod with a self-locking unit to fix the object to be tested on the surface of the operating table. However, if the self-locking unit becomes loose during the process of the user fixing the object, the pendulum will swing freely under the action of gravity, thereby injuring the user. This utility model provides a pendulum impact testing machine.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A pendulum impact testing machine includes: a fixed frame, on the surface of which a pendulum rod is mounted; a first mounting unit and a locking unit, wherein the first mounting unit is used to rotatably mount the pendulum rod on the surface of the fixed frame; and the locking unit is used to lock the position of the pendulum rod.

[0007] The surface of the pendulum rod is provided with two pendulums, and a second mounting unit is also included. The second mounting unit is used to install the two pendulums onto the surface of the pendulum rod respectively. Two clamping plates are provided above the fixing frame, and a first driving unit and a second driving unit are also included. The first driving unit is used to drive the two clamping plates to move simultaneously along the width of the fixing frame, and the second driving unit is used to drive the two clamping plates to move closer to or further away from each other.

[0008] Furthermore, the first mounting unit includes a mounting plate fixedly mounted on the surface of the mounting frame, with a mounting tube fixedly penetrating the surface of the mounting plate, and one end of the swing arm rotatably inserted into the surface of the mounting tube.

[0009] Furthermore, the locking unit includes a mounting groove formed on the surface of the mounting plate, a locking block provided on the inner wall of the mounting groove, and rotating protrusions provided on both sides of the locking block. The surfaces of the two rotating protrusions are respectively rotatably inserted into the two sides of the inner wall of the mounting groove, and a torsion spring is slidably sleeved on the surface of one of the rotating protrusions. The two ends of the torsion spring are respectively fixedly installed on the surface of one of the rotating protrusions and the surface of the fixing frame. The mating block adapted to the locking block is fixedly installed on the surface of the swing rod.

[0010] Furthermore, the second mounting unit includes a mounting block fixedly mounted on the other end of the pendulum rod, and two externally threaded tubes are fixedly mounted on the surface of the mounting block, with the two pendulums respectively threaded onto the surfaces of the two externally threaded tubes.

[0011] Furthermore, the first driving unit includes a movable rail disposed above the fixed frame, the surface of the fixed frame is provided with a driving groove, a threaded rod is rotatably inserted into the inner wall of the driving groove, the surface of the movable rail is provided with a driving protrusion, and the driving protrusion is threadedly sleeved on the surface of the threaded rod.

[0012] Furthermore, the second drive unit includes two adjustment protrusions respectively disposed on the surfaces of the two clamping plates. The surfaces of the two adjustment protrusions are slidably inserted into the inner wall of the moving rail. The inner wall of the moving rail is rotatably inserted with a positive and negative threaded screw, which is threaded into the surfaces of the two adjustment protrusions.

[0013] Furthermore, a scale is fixedly sleeved on the surface of the mounting tube, a hook is fixedly installed at the other end of the swing rod, an annular groove is opened on the surface of the mounting tube, a damping ring is rotatably sleeved on the inner wall of the annular groove, and a pointing rod is fixedly installed on the surface of the damping ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, a pendulum is set on the surface of the fixed frame. During use, the user first locks the pendulum using the locking unit, then controls the two clamping plates to move simultaneously along the width of the fixed frame using the first drive unit, so that the two clamping plates leave the swing range of the pendulum. Then, the object to be tested is placed between the two clamping plates, and the two clamping plates are clamped by the second drive unit. The two clamping plates are reset by the first drive unit, and finally the locking unit releases the lock on the pendulum. The object can then be tested by the impact force of the two pendulums. In the above process, even if the locking unit loosens and the pendulums fall while the user is clamping the object, the user will not be injured, thus improving the safety of the device.

[0016] 2. In this utility model, a scale is fixedly attached to the surface of the mounting tube. Before use, the user needs to rotate the pointing rod to drive the damping ring to rotate, so that the surface of the pointing rod is in contact with the surface of the hook rod. Finally, when the pendulum swings, it will drive the hook rod to swing, so that the force value of the pendulum can be judged by the pointing direction after the final movement. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a half-sectional view of the present invention;

[0019] Figure 3 This is a partial schematic diagram from another angle of the present invention;

[0020] Figure 4 This is a three-dimensional structural diagram of another angle portion of the present invention.

[0021] In the diagram: 1. Fixed frame; 2. Swing rod; 3. First mounting unit; 31. Mounting plate; 32. Mounting tube; 4. Locking unit; 41. Mounting groove; 42. Locking block; 43. Rotating protrusion; 44. Torsion spring; 45. Mating block; 5. Pendulum; 6. Second mounting unit; 61. Mounting block; 62. External threaded tube; 7. Clamping plate; 8. First drive unit; 81. Moving rail; 82. Drive groove; 83. Threaded rod; 84. Drive protrusion; 9. Second drive unit; 91. Adjustment protrusion; 92. Positive and negative threaded screw; 10. Dial; 11. Hook rod; 12. Annular groove; 13. Damping ring; 14. Pointing rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] This embodiment provides a pendulum impact testing machine, mainly to solve the problem that in current pendulum impact testing machines, a self-locking unit is generally required to lock the pendulum rod and fix the object to be tested on the surface of the operating table. However, if the self-locking unit loosens during the user's fixation of the object, the pendulum will swing freely under the action of gravity, thereby injuring the user. The following technical solution is provided, which will be combined with... Figures 1-4 Please provide a detailed explanation:

[0024] A pendulum impact testing machine includes: a fixed frame 1 with a pendulum rod 2 mounted on its surface; under the action of a first mounting unit 3, the pendulum rod 2 is rotatably mounted on the surface of the fixed frame 1; in use, the user first needs to install a pendulum 5 (the pendulum 5 comes in various specifications with different masses) on both sides of the pendulum rod 2 via a second mounting unit 6; the position of the pendulum rod 2 is locked by a locking unit 4; then, the two clamping plates 7 are moved along their width by a first driving unit 8 (moving the position of the two clamping plates 7 to prevent the pendulum 5 from accidentally falling off and injuring the user); after the object to be tested is placed between the two clamping plates 7, the two clamping plates 7 are moved closer together by a second driving unit 9 to clamp the object. Finally, the object is moved back to its original position by the first driving unit 8, and the limiting of the pendulum 2 is released by the locking unit 4. The pendulum 5 will then swing under the action of gravity, causing the pendulum 2 to swing. After the surface of the pendulum 5 contacts the surface of the object, its physical properties can be detected. The main components of the first mounting unit 3 are: a mounting plate 31 fixedly mounted on the surface of the fixed frame 1, and a mounting tube 32 fixedly passing through the surface of the mounting plate 31. Therefore, when the pendulum 5 swings under the action of gravity, it will drive the pendulum 2, which is rotatably inserted into one end of the mounting tube 32, to rotate. The main components of the locking unit 4 are: a mating block 45 fixedly sleeved on the surface of the pendulum 2, and a mounting groove 41 is opened on the surface of the mounting plate 31. A lock is installed inside the mounting groove 41. The locking block 42 has a stop block 42, and two rotating protrusions 43 are provided on both sides of the locking block 42. The two rotating protrusions 43 are respectively rotatably inserted into the two sides of the inner wall of the mounting groove 41. Since a torsion spring 44 is slidably sleeved on the surface of one of the rotating protrusions 43, and the two ends of the torsion spring 44 are respectively fixedly installed on the surface of one of the rotating protrusions 43 and the fixing bracket 1, when one end of the mating block 45 abuts against the inner wall of the locking block 42, the torsion spring 44 will apply a force to the locking to return to its original position, thereby limiting the swing arm 2. The main components of the second mounting unit 6 are: the mounting block 61 fixedly installed on the other end of the swing arm 2. In use, the user screws the two pendulums 5 onto the two external threaded tubes 6 respectively fixedly installed on both sides of the mounting block 61. The surface of the fixed frame 1 allows for the installation of two pendulums 5 on both sides of the pendulum rod 2. The main components of the first drive unit 8 are: a drive groove 82 formed on the surface of the fixed frame 1, and a moving rail 81 provided above the drive groove 82. In use, the user holds and rotates the threaded rod 83 that is rotatably inserted into the inner wall of the drive groove 82, which drives the drive protrusion 84 that is threaded onto the surface of the threaded rod 83 to slide on the inner wall of the drive groove 82 (the drive protrusion 84 is located at the bottom of the moving rail 81), further driving the moving rail 81 along the width of the fixed frame 1. The main components of the second drive unit 9 are: a positive and negative threaded screw 92 that is rotatably inserted into the inner wall of the moving rail 81, and adjustment protrusions 91 provided on the surfaces of the two clamping plates 7.Therefore, when the user rotates the lead screw 92, the two adjusting protrusions 91 threaded onto the surface of the lead screw 92 slide along the inner wall of the moving rail 81, further causing the two clamping plates 7 to move closer or further apart.

[0025] By setting a pendulum 2 on the surface of the fixed frame 1, the user first locks the pendulum 2 with the locking unit 4, and then controls the two clamping plates 7 to move simultaneously along the width of the fixed frame 1 through the first drive unit 8, so that the two clamping plates 7 leave the swing range of the pendulum 2. Then, the object to be tested is placed between the two clamping plates 7, and the two clamping plates 7 are clamped by the second drive unit 9. The two clamping plates 7 are reset by the first drive unit 8, and finally the locking unit 4 is used to release the lock on the pendulum 2. The object can then be tested by the impact force of the two pendulums 5. In the above process, even if the locking unit 4 loosens and the pendulums 5 fall when the user is clamping the object, the user will not be injured, thus improving the safety of the device.

[0026] By fixing a dial 10 to the surface of the mounting tube 32, before use, the user needs to rotate the pointer rod 14 to drive the damping ring 13 to rotate, so that the surface of the pointer rod 14 is in contact with the surface of the hook rod 11. Finally, when the pendulum 2 swings, it will drive the hook rod 11 to swing, so the force value of the pendulum 5 can be judged by the direction after the final movement.

[0027] like Figure 1 and Figure 2 As shown, in some embodiments, a scale 10 is fixedly sleeved on the surface of the mounting tube 32, and an annular groove 12 is opened on the surface of the mounting tube 32. A damping ring 13 is rotatably sleeved on the inner wall of the annular groove 12 (the surface material of the damping ring 13 is rubber, and the rubber is in a compressed state, so the damping ring 13 can remain in a fixed position on the inner wall of the annular groove 12 without the action of external force). A pointing rod 14 is fixedly installed on the surface of the damping ring 13. During the swing of the pendulum 5, it will drive the hook rod 11 fixedly installed at one end of the pendulum 2 to move. Therefore, before the pendulum 5 swings, the user needs to put the pointing rod 14 against the surface of the hook rod 11. After the pendulum 5 swings, the hook rod 11 drives the pointing rod 14, so that the pointing rod 14 slides on the surface of the scale 10. The force value of the pendulum 5 is judged by the direction of the movement on the scale 10.

[0028] The working process of this utility model is as follows: First, the user needs to rotate the threaded rod 83, which will drive the moving rail 81 to move along the length of the drive groove 82. After the two clamping plates 7 move to the other end of the drive groove 82, the user can place the object on the surface of the two clamping plates 7, rotate the positive and negative threaded screws 92, and clamp the object through the two clamping plates 7. Finally, rotate the threaded rod 83 to move the object back to its original position, and move the locking block 42. Under the action of gravity, the pendulum 5 will drive the pendulum rod 2 to swing and strike the surface of the object, thereby realizing the detection of the object's physical properties.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pendulum impact testing machine for measuring material properties, characterized in that, include: A fixed frame (1) is provided with a swing rod (2) mounted on its surface. It also includes a first mounting unit (3) and a locking unit (4). The first mounting unit (3) is used to rotate the swing rod (2) onto the surface of the fixed frame (1), and the locking unit (4) is used to lock the position of the swing rod (2). The surface of the swing rod (2) is provided with two pendulums (5), and it also includes a second mounting unit (6). The second mounting unit (6) is used to install the two pendulums (5) on the surface of the swing rod (2) respectively. The upper part of the fixing frame (1) is provided with two clamping plates (7), and it also includes a first driving unit (8) and a second driving unit (9). The first driving unit (8) is used to drive the two clamping plates (7) to move simultaneously along the width of the fixing frame (1), and the second driving unit (9) is used to drive the two clamping plates (7) to move closer to or further away from each other.

2. The pendulum impact testing machine for measuring material properties according to claim 1, characterized in that: The first installation unit (3) includes an installation plate (31) fixedly installed on the surface of the fixing frame (1), and an installation tube (32) is fixedly inserted through the surface of the installation plate (31). One end of the swing rod (2) is rotatably inserted into the surface of the installation tube (32).

3. A pendulum impact testing machine for measuring material properties according to claim 2, characterized in that: The locking unit (4) includes a mounting groove (41) formed on the surface of the mounting plate (31). A locking block (42) is provided on the inner wall of the mounting groove (41). A rotating protrusion (43) is provided on both sides of the locking block (42). The surfaces of the two rotating protrusions (43) are respectively rotatably inserted into the two sides of the inner wall of the mounting groove (41), and a torsion spring (44) is slidably sleeved on the surface of one of the rotating protrusions (43). The two ends of the torsion spring (44) are respectively fixedly installed on the surface of one of the rotating protrusions (43) and the surface of the fixing frame (1). The mating block (45) adapted to the locking block (42) is fixedly installed on the surface of the swing rod (2).

4. A pendulum impact testing machine for measuring material properties according to claim 1, characterized in that: The second mounting unit (6) includes a mounting block (61) fixedly mounted on the other end of the pendulum (2). Two external threaded tubes (62) are fixedly mounted on the surface of the mounting block (61), and the two pendulums (5) are respectively threaded onto the surfaces of the two external threaded tubes (62).

5. A pendulum impact testing machine for measuring material properties according to claim 1, characterized in that: The first drive unit (8) includes a movable rail (81) disposed above the fixed frame (1). The surface of the fixed frame (1) is provided with a drive groove (82). A threaded rod (83) is rotatably inserted into the inner wall of the drive groove (82). The surface of the movable rail (81) is provided with a drive protrusion (84). The drive protrusion (84) is threadedly sleeved on the surface of the threaded rod (83).

6. A pendulum impact testing machine for measuring material properties according to claim 5, characterized in that: The second drive unit (9) includes two adjustment protrusions (91) respectively disposed on the surfaces of the two clamping plates (7). The surfaces of the two adjustment protrusions (91) are slidably inserted into the inner wall of the moving rail (81). The inner wall of the moving rail (81) is rotatably inserted with a positive and negative thread screw (92). The positive and negative thread screw (92) is threaded into the surfaces of the two adjustment protrusions (91).

7. A pendulum impact testing machine for measuring material properties according to claim 2, characterized in that: A dial (10) is fixedly sleeved on the surface of the mounting tube (32), and a hook rod (11) is fixedly installed at the other end of the swing rod (2). An annular groove (12) is opened on the surface of the mounting tube (32), and a damping ring (13) is rotatably sleeved on the inner wall of the annular groove (12). A pointing rod (14) is fixedly installed on the surface of the damping ring (13).

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