Pendulum impact testing machine

Abstract

The utility model provides a pendulum bob type impact testing machine, which comprises a support frame, a rotating arm, an impact hammer, an impact rod, a driving assembly and a fixing assembly, the support frame is a vertically arranged frame structure, one end of the rotating arm is rotatably connected with the top of the support frame, and the rotating surface of the rotating arm is a vertical surface; the impact hammer is fixedly arranged at the end, away from the supporting frame, of the rotating arm. The driving assembly is fixedly arranged on the top of the supporting frame and used for driving the rotating arm to rotate. The fixing assembly is fixedly arranged in the supporting frame and enables a detected object to move into the supporting frame from the outer side of the supporting frame. And the impact rod is horizontally arranged and is coplanar with the rotating surface of the rotating arm. According to the utility model, the problems that the rotation amplitude of the impact hammer is too large, a large space is needed, and a detected object flies away from the testing machine to cause accidents after being impacted are solved, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of impact testing machines, in particular to a pendulum type impact testing machine. Background Art

[0002] The pendulum impact testing machine is used to test the impact resistance of metal materials and non-metallic materials under dynamic loads, so as to determine the properties of the materials under dynamic loads. The pendulum impact testing machine includes a base and a pendulum. In the existing structure, the pendulum is generally rotatably set on one side of the base, and the pendulum can be rotated to the left and right sides of the base. The object to be tested is fixedly placed under the base. When the pendulum collides with the object to be tested, the object to be tested may break away from the fixed position and fly outward, and then collide with other equipment and cause damage. In addition, when the pendulum rotates to a vertical state and collides with the object to be tested, if the object to be tested is disconnected or the displacement cannot stop the pendulum, the pendulum will continue to rotate forward and release potential energy. If the range of motion of the pendulum is too large, a larger safe use range is required, which will be affected if it is used in a room with limited space. Therefore, it is necessary to optimize the pendulum impact testing machine. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a pendulum impact testing machine, which solves the problems in the prior art that the impact hammer has too large a rotation amplitude and requires a large space, and the object being tested is prone to fly off the testing machine after being hit, causing accidents.

[0004] According to an embodiment of the present utility model, a pendulum impact testing machine includes a support frame, a rotating arm, an impact hammer, an impact rod, several baffles, a driving assembly and a fixed assembly, the support frame is a vertically arranged frame structure, one end of the rotating arm is rotatably connected to the top of the support frame, and the rotating surface of the rotating arm is a vertical surface; the impact hammer is fixedly arranged at the end of the rotating arm away from the support frame; the driving assembly is fixedly arranged at the top of the support frame and is used to drive the rotating arm to rotate; the fixed assembly is fixedly arranged inside the support frame and moves the object to be tested from the outside of the support frame to the inside of the support frame, and the baffle is fixedly arranged on the side of the fixed assembly; the impact rod is horizontally arranged and perpendicular to the rotating axis of the rotating arm, the impact rod and the support frame are slidably connected, one end of the impact rod is located on the moving trajectory of the impact hammer, and the other end of the impact rod extends to the fixed assembly.

[0005] The technical principle of the utility model is: when the detection object is hit, the servo motor drives the rotating arm to rotate upward to a preset position, and then the rotating arm rotates downward to a vertical state under the action of gravity and contacts the impact rod. The impact rod transmits the impact force to the detection object fixed inside the support frame. The impact rod simultaneously blocks the impact hammer, causing the rotating arm to stop rotating. If the detection object is separated from the fixed component support frame, it will block the detection object.

[0006] Preferably, the driving assembly includes a rotary encoder, a servo motor, a gear plate, a driven plate, a cylinder and a controller, a rotating shaft is rotatably provided on the support frame, and one end of the rotating arm is fixedly connected to the rotating shaft; the driven plate is coaxial with the rotating shaft and fixedly connected, the gear plate and the rotating shaft are coaxial and rotatably connected, the cylinder and the gear plate are fixedly connected, the movable section of the cylinder is fixedly connected with a pin perpendicular to the driven plate, and a positioning hole for inserting the pin is provided on the driven plate; the servo motor is fixedly connected to the support frame, a pinion is fixedly provided on the output shaft of the servo motor, and the pinion is meshed with the gear plate; the rotary encoder is fixedly connected to the support frame, and the detection axis of the rotary encoder is coaxial with the rotating shaft and fixedly connected; the rotary encoder, servo motor and controller are electrically connected.

[0007] Preferably, the positioning hole is provided on the edge of the driven disk.

[0008] Preferably, the rotating arm is a Y-shaped structure, and the two ends at the bottom of the Y-shape are fixedly connected to the rotating shaft; the impact hammer is fixedly arranged on the top of the Y-shaped structure.

[0009] Preferably, the fixing assembly includes a first power cylinder, a second power cylinder, a fixed plate and a sliding plate. The fixed plate is horizontally arranged and fixedly connected to the support frame. The sliding plate is slidably arranged on the top surface of the fixed plate. The first power cylinder is fixedly arranged on the top surface of the fixed plate to drive the sliding plate to slide; a placement hole is provided in the middle of the sliding plate, and a through hole for the push rod to pass through is provided at the bottom of the placement hole; a push rod sliding up and down is provided in the middle of the fixed plate, and the second power cylinder is fixedly arranged below the push rod to drive the push rod to move up and down through the through hole; a limiting column is fixed above the fixed plate and at the position corresponding to the push rod.

[0010] Preferably, the baffles are located on both sides of the moving track of the sliding plate and are fixedly connected to the fixed plate. The moving direction of the sliding plate is perpendicular to the impact rod, and the impact rod is slidably connected to the baffle on one side.

[0011] Compared with the existing technology, the present invention has the following beneficial effects: the present invention fixes the detection object inside the support frame, avoids direct collision between the impact hammer and the detection object, reduces the risk of the detection object being carried away by the impact hammer after it becomes loose, and after the detection object detaches from the fixing component, the support frame will prevent the detection object from flying outward, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional Figure 1 .

[0013] Figure 2 The three-dimensional Figure 2 .

[0014] Figure 3 This is a schematic diagram of the fixing assembly of the present invention.

[0015] In the above drawings: 1. gear plate; 2. pinion; 3. servo motor; 4. rotary encoder; 5. cylinder; 6. driven plate; 7. rotating shaft; 8. rotating arm; 9. impact hammer; 10. second power cylinder; 11. first power cylinder; 12. impact rod; 13. support frame; 14. fixed plate; 15. push rod; 16. sliding plate; 17. baffle; 18. extension plate; 19. limit column; 20. placement hole; 21. latch. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, an embodiment of the present invention proposes a pendulum impact testing machine, comprising a support frame 13, a rotating arm 8, a striker 9, a striker rod 12, a plurality of baffles 17, a drive assembly and a fixed assembly. The support frame 13 is a vertically arranged frame structure, and the support frame 13 includes a plurality of flat plates arranged at intervals in the vertical direction, and the flat plates are fixedly connected by straight rods. One end of the rotating arm 8 is rotatably connected to the top of the support frame 13, and the connection position is on the side of the top. The rotating surface of the rotating arm 8 is a vertical surface. When the rotating arm 8 rotates downward to a vertical state, it will be blocked by the support frame 13 and stop rotating. The striker 9 is fixedly arranged at one end of the rotating arm 8 away from the support frame 13. The drive assembly is fixedly arranged at the top of the support frame 13 and is used to drive the rotating arm 8 to rotate. The fixed assembly is fixedly arranged inside the support frame 13 and moves the object to be tested from the outside of the support frame 13 to the inside of the support frame 13. The baffle 17 is fixedly arranged on the side of the fixed assembly. The impact rod 12 is arranged horizontally and perpendicular to the rotation axis of the rotating arm 8. The impact rod 12 is slidably connected to the support frame 13. One end of the impact rod 12 is located on the movement trajectory of the impact hammer 9, and the other end of the impact rod 12 extends to the fixed component. When the impact hammer 9 is driven by the rotating arm 8 to move close to the support frame 13, the impact hammer 9 and the impact rod 12 come into contact, and the impact rod 12 transfers the impact load transmitted by the impact hammer 9 to the detection object on the fixed component. If the detection object is separated from the fixed component after being hit, the support frame 13 will prevent the detection object from flying out of the support frame 13.

[0018] like Figure 1As shown, the drive assembly preferably includes a rotary encoder 4, a servo motor 3, a gear plate 1, a driven plate 6, a cylinder 5, and a controller. A rotating shaft 7 is rotatably mounted on the support frame 13. The rotating shaft 7 is arranged horizontally. An extension plate 18 is fixedly mounted on the top of the support frame 13 to secure the rotating shaft 7 to one side of the support frame 13. One end of the rotating arm 8 is fixedly connected to the rotating shaft 7. The driven plate 6 is coaxial and fixedly connected to the rotating shaft 7. The gear plate 1 is coaxial and rotatably connected to the rotating shaft 7. The gear plate 1 and the driven plate 6 are adjacent. The cylinder 5 is fixedly connected to the gear plate 1. A latch 21 perpendicular to the driven plate 6 is fixedly connected to the movable section of the cylinder 5. The driven plate 6 is provided with a positioning hole for inserting the latch 21. The cylinder 5 enables the latch 21 to enter or exit the positioning hole. The servo motor 3 is fixedly mounted on the support frame 13. A pinion 2 is fixedly mounted on the output shaft of the servo motor 3. The pinion 2 meshes with the gear plate 1. The rotary encoder 4 is fixedly connected to the support frame 13, and the detection axis of the rotary encoder 4 is coaxial and fixedly connected to the rotating axis 7. The rotary encoder 4, the servo motor 3, the cylinder 5 and the controller are electrically connected.

[0019] During operation, the servo motor 3 drives the small gear 2 to rotate, and the small gear 2 drives the gear plate 1 to rotate a certain angle so that the latch 21 is aligned with the positioning hole on the driven plate 6. The cylinder then pushes the latch 21 into the positioning hole. Then, the servo motor 3 drives in the reverse direction, and the small gear 2 drives the large gear to rotate. The large gear and the driven plate 6 rotate synchronously to raise the impact hammer 9. The rotary encoder 4 reads the rising angle of the rotating arm 8 in real time. After the rotating arm 8 reaches the set angle, the rotary encoder 4 sends a signal, and the controller causes the cylinder to withdraw the latch 21, thereby disengaging the driven plate 6. The end of the rotating arm 8 then impacts the impact rod 12.

[0020] Preferably, the positioning hole is provided at the edge of the driven disk 6 so as to maximize the distance between the positioning hole and the rotating shaft 7 , thereby preventing the cylinder from contacting the support frame 13 when moving.

[0021] like Figure 1 As shown, preferably, the rotating arm 8 is a Y-shaped structure, and the two ends of the bottom of the Y-shaped structure are fixedly connected to the rotating shaft 7. The impact hammer 9 is fixedly arranged on the top of the Y-shaped structure.

[0022] like Figure 2 、 3As shown, the fixing assembly preferably includes a first power cylinder 11, a second power cylinder 10, a fixed plate 14, and a sliding plate 16. The fixed plate 14 is horizontally arranged and fixedly connected to the support frame 13. The fixed plate 14 extends from the outside of the support frame 13 to the inside of the support frame 13. The sliding plate 16 is slidably mounted on the top surface of the fixed plate 14. The first power cylinder 11 is fixedly mounted on the top surface of the fixed plate 14 to drive the sliding plate 16 to slide. The sliding plate 16 moves back and forth between the outside and the center of the support frame 13. A placement hole 20 is provided in the middle of the sliding plate 16. The bottom of the placement hole 20 is provided with a through hole for the push rod 15 to pass through. In this embodiment, the placement hole 20 is a circular hole, and the detection object needs to be provided with a size that is compatible with the placement hole 20. A push rod 15 is provided in the middle of the fixed plate 14, which slides up and down. The second power cylinder 10 is fixedly mounted below the push rod 15 to drive the push rod 15 up and down. A limit post 19 is fixedly mounted above the fixed plate 14 and corresponding to the position of the push rod 15.

[0023] During use, the first power cylinder 11 pushes the sliding plate 16 to a position close to the outside of the support frame 13. After the staff places the test object into the placement hole 20, the first power cylinder 11 contracts to move the sliding plate 16 into the support frame 13. The axis of the impact rod 12 intersects with the axis of the placement hole 20, and one end of the impact rod 12 abuts the test object. The second power cylinder 10 then extends to fix the test object between the limit column 19 and the push rod 15. The bottom of the test object is located in the placement hole 20 and will not be pushed out by the push rod 15. Finally, the impact hammer 9 is released to impact. The first power cylinder 11 and the second power cylinder 10 are pneumatic cylinders.

[0024] like Figure 3 As shown, preferably, the baffles 17 are located on both sides of the movement trajectory of the sliding plate 16 and are fixedly connected to the fixed plate 14. The movement direction of the sliding plate 16 is perpendicular to the striking rod 12, and the striking rod 12 is slidably connected to the baffles 17 on one side. The baffles 17 are perpendicular to the striking rod 12. When the striking rod 12 strikes the detection object, the detection object moves away from the striking rod 12. The baffles 17 prevent the detection object from moving or rebounding, thereby improving safety.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pendulum impact testing machine, characterized in that: The invention comprises a support frame (13), a rotating arm (8), a striking hammer (9), a striking rod (12), a plurality of baffles (17), a driving assembly and a fixing assembly, wherein the support frame (13) is a vertically arranged frame structure, one end of the rotating arm (8) is rotatably connected to the top of the support frame (13), and the rotating surface of the rotating arm (8) is a vertical surface; the striking hammer (9) is fixedly arranged at one end of the rotating arm (8) away from the support frame (13); the driving assembly is fixedly arranged at the top of the support frame (13) and is used to drive the rotating arm (8). The rotating arm (8) rotates; the fixed component is fixedly arranged inside the support frame (13) and enables the object to be detected to move from the outside of the support frame (13) to the inside of the support frame (13); the baffle (17) is fixedly arranged on the side of the fixed component; the impact rod (12) is horizontally arranged and perpendicular to the rotation axis of the rotating arm (8); the impact rod (12) and the support frame (13) are slidably connected; one end of the impact rod (12) is located on the moving track of the impact hammer (9), and the other end of the impact rod (12) extends to the fixed component.

2. A pendulum impact testing machine according to claim 1, characterized in that: The driving assembly comprises a rotary encoder (4), a servo motor (3), a gear plate (1), a driven plate (6), a cylinder (5) and a controller; a rotating shaft (7) is rotatably provided on the support frame (13); one end of the rotating arm (8) is fixedly connected to the rotating shaft (7); the driven plate (6) is coaxial with and fixedly connected to the rotating shaft (7); the gear plate (1) is coaxial with and rotatably connected to the rotating shaft (7); the cylinder (5) is fixedly connected to the gear plate (1); the movable section of the cylinder (5) is fixedly connected to a rotating shaft (7) perpendicular to the driven plate (6) The driven disk (6) is provided with a positioning hole for inserting the latch (21); the servo motor (3) and the support frame (13) are fixedly connected, a pinion (2) is fixedly provided on the output shaft of the servo motor (3), and the pinion (2) and the gear disk (1) are meshed; the rotary encoder (4) and the support frame (13) are fixedly connected, and the detection axis of the rotary encoder (4) and the rotating axis (7) are coaxial and fixedly connected; the rotary encoder (4), the servo motor (3), the cylinder (5) and the controller are electrically connected.

3. A pendulum impact testing machine according to claim 2, characterized in that: The positioning hole is arranged on the edge of the driven disk (6).

4. The pendulum impact testing machine according to claim 2, wherein: The rotating arm (8) is a Y-shaped structure, and the two ends at the bottom of the Y-shaped structure are fixedly connected to the rotating shaft (7); the impact hammer (9) is fixedly arranged on the top of the Y-shaped structure.

5. The pendulum impact testing machine according to claim 1, wherein: The fixing assembly comprises a first power cylinder (11), a second power cylinder (10), a fixed plate (14) and a sliding plate (16); the fixed plate (14) is horizontally arranged and fixedly connected to the support frame (13); the sliding plate (16) is slidably arranged on the top surface of the fixed plate (14); the first power cylinder (11) is fixedly arranged on the top surface of the fixed plate (14) for driving the sliding plate (16) to slide; a placement hole (20) is provided in the middle of the sliding plate (16); a through hole for the push rod (15) to pass through is provided at the bottom of the placement hole (20); a push rod (15) that slides up and down is provided in the middle of the fixed plate (14); the second power cylinder (10) is fixedly arranged below the push rod (15) for driving the push rod (15) to move up and down through the through hole; a limiting column (19) is fixedly provided above the fixed plate (14) and at a position corresponding to the push rod (15).

6. The pendulum impact testing machine according to claim 5, characterized in that: The baffles (17) are located on both sides of the moving track of the sliding plate (16) and are fixedly connected to the fixed plate (14). The moving direction of the sliding plate (16) is perpendicular to the impact rod (12). The impact rod (12) is slidably connected to the baffles (17) on one side.

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