Impact testing device

Abstract

The present invention relates to an impact testing device, which belongs to the technical field of testing devices. The impact testing device includes a base, a bottom plate is installed on the base, a guide rod is installed on the bottom plate, a top plate is installed on the end of the guide rod away from the bottom plate, and a lifting mechanism is installed on the top plate. The lifting mechanism includes a reducer, a driving wheel and a driven wheel, a motor is installed on the reducer, a synchronous belt is connected between the driving wheel and the driven wheel, and the output end of the reducer is connected to the driving wheel; screw rods are connected to the driving wheel and the driven wheel, the other ends of the two screw rods pass through the top plate and are connected to the bottom plate, a middle connecting plate connected to the guide rod is connected between the two screw rods, a counterweight hanging plate is installed below the middle connecting plate, and guide rollers are installed at the bottom of both ends of the counterweight hanging plate, which are respectively slidably connected to the guide rods; a counterweight is hung on the bottom of the counterweight hanging plate, a latch hanging block is installed on the top, and a hole is opened on the middle connecting plate and a latch mechanism is installed. The present invention can prevent the lifting part and the counterweight part from being damaged.

Description

Technical Field

[0001] The invention relates to an impact testing device, belonging to the technical field of testing devices. Background Art

[0002] Most of the impact testing devices in the existing technology connect the lifting part and the counterweight part together to perform a falling impact on the product. Such long-term impact causes a heavy burden on the lifting part and is easily damaged. The existing technology also mostly uses guide columns and guide sleeves as guide mechanisms. Due to the large resistance of the guide columns and guide sleeves, it is impossible to ensure the free fall of the counterweight part. During the impact process, the guide columns and guide sleeves can easily be damaged due to uneven impact force. In addition, the existing technology has a complex structure, and the subsequent maintenance cost and difficulty are high.

[0003] The information disclosed in this background section is only intended to enhance understanding of the overall background of the invention and should not be considered as an admission or any form of suggestion that the information constitutes the prior art already known to a person of ordinary skill in the art. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an impact testing device to solve the technical problem in the related art that the lifting part and the counterweight part are easily damaged.

[0005] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0006] The present invention provides an impact testing device, comprising a base, a bottom plate mounted on the base, a product placed on the bottom plate, four guide rods mounted on the bottom plate, a top plate mounted on one end of the four guide rods away from the bottom plate, a lifting mechanism mounted on the top plate, the lifting mechanism comprising a reducer, a driving wheel and a driven wheel, a motor mounted on the reducer, a synchronous belt connected between the driving wheel and the driven wheel, and an output end of the reducer connected to the driving wheel;

[0007] The driving wheel and the driven wheel are both connected to a screw rod, the other ends of the two screw rods pass through the top plate and are connected to the bottom plate, a middle connecting plate connected to the four guide rods is connected between the two screw rods, a counterweight hanging plate is installed under the middle connecting plate, and a plurality of guide rollers are installed at the bottom of both ends of the counterweight hanging plate, which are respectively slidably connected to the four guide rods;

[0008] At least one counterweight is hung on the bottom of the counterweight hanging plate, and a latch hanging block is installed on the top. The middle connecting plate is provided with a hole for the latch hanging block to pass through, and a latch mechanism for fixing the latch hanging block on the middle connecting plate.

[0009] Furthermore, the latch mechanism includes a photoelectric switch arranged at one end of the hole, and a slide rail and a cylinder arranged at the other end of the hole, the slide rail is slidably connected to a slider, the slider is installed with a latch guide device, and the latch of the cylinder is slidably connected to the latch guide device.

[0010] Furthermore, two roller brackets are installed at the bottom of both ends of the counterweight hanging plate, four guide roller brackets are installed on the two roller brackets, and multiple guide rollers are installed on the four guide roller brackets through wheel axles and are respectively slidably connected to the four guide rods.

[0011] Furthermore, two counterweight hanging plates are installed below the counterweight hanging plate, a pressure plate is connected between the two counterweight hanging plates, at least one counterweight weight is installed on the pressure plate, and the bottom of the pressure plate is connected to a splint via a pin.

[0012] Furthermore, a first latch connection block is installed at the rear end of the center link plate, and a second latch connection block is installed at the rear end of the counterweight hanging plate.

[0013] Furthermore, four reducer brackets are installed on the top plate, a reducer support plate is installed on the four reducer brackets, and the reducer is installed on the reducer support plate.

[0014] Furthermore, a belt tensioning device is installed on the top plate, and the belt tensioning device is tensionedly connected to the synchronous belt.

[0015] Furthermore, four base feet are installed under the base, and positioning pieces are installed on the four guide rods.

[0016] Furthermore, two columns and four supports are installed on the base plate, and one end of the four supports is installed on the base plate, and the other end is installed on the two columns.

[0017] Furthermore, a latch mechanism protective cover covering the latch mechanism is installed on the center link plate, and a lifting mechanism protective cover covering the lifting mechanism is installed on the top plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention separates the lifting part from the counterweight part, and connects the central connecting plate and the counterweight hanging plate through a latch mechanism. In this way, when performing an impact test, the counterweight part can be tested alone, thereby preventing the lifting part from being damaged by prolonged impact. At the same time, the counterweight hanging plate is connected to the guide rod through a roller to ensure that the counterweight part performs free fall motion during the test, and can also prevent uneven impact force from causing damage to the counterweight part, and reduce the impact of the impact force on other components of the device. The present invention has a simpler structure and greatly reduces the subsequent maintenance cost and difficulty of repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an impact testing device provided by an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of an impact testing device provided by an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of an impact testing device provided by an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of an impact testing device provided by an embodiment of the present invention;

[0024] In the figure: 1: driving wheel; 2: reducer bracket; 3: top plate; 4: guide rod; 5: center plate; 6: counterweight hanging plate; 7: roller bracket; 8: guide roller; 9: wheel axle; 10: guide roller bracket; 11: counterweight hanging plate; 12: positioning piece; 13: bottom plate; 14: base foot; 15: base; 16: pin; 17: splint; 18: pressure plate; 19: counterweight; 20: latch hanger; 21: cylinder ; 22: Latch; 23: Driven pulley; 24: Latch guide device; 25: Belt tensioning device; 26: Motor; 27: Reducer; 28: Synchronous belt; 29: Reducer support plate; 30: Lifting mechanism protective cover; 31: Latch mechanism protective cover; 32: Column; 33: Support; 34: Slide rail; 35: Photoelectric switch; 36: Slider; 37: First latch connecting block; 38: Second latch connecting block; 39: Screw rod. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] like Figure 1 As shown, this embodiment provides an impact testing device, including a base 15, four base feet 14 are installed under the base 15, a bottom plate 13 is installed on the base 15, a product is placed on the bottom plate 13, four guide rods 4 are installed on the bottom plate 13, and positioning parts 12 are installed on the four guide rods 4. A top plate 3 is installed at one end of the four guide rods 4 away from the bottom plate 13.

[0029] Specifically, since the guide rod 4 is subjected to long-term impact and is easily damaged, this embodiment selects a guide rod 4 with high hardness, high straightness, high hardness, better wear resistance and impact resistance, and increases the stability and service life of the equipment.

[0030] In this embodiment, a lifting mechanism is installed on the top plate 3, and the lifting mechanism includes a reducer 27, a driving wheel 1 and a driven wheel 23. A motor 26 is installed on the reducer 27, and a synchronous belt 28 is connected between the driving wheel 1 and the driven wheel 23. The output end of the reducer 27 is connected to the driving wheel 1.

[0031] Specifically, four reducer brackets 2 are installed on the top plate 3 , a reducer support plate 29 is installed on the four reducer brackets 2 , and the reducer 27 is installed on the reducer support plate 29 .

[0032] In this embodiment, a belt tensioning device 25 is further installed on the top plate 3 , and the belt tensioning device 25 is tensionedly connected to the synchronous belt 28 .

[0033] In this embodiment, the driving wheel 1 and the driven wheel 23 are both connected to a screw rod 39 , the other ends of the two screw rods 39 pass through the top plate 3 and are connected to the bottom plate 13 , and a center connecting plate 5 is connected between the two screw rods 39 .

[0034] In this embodiment, the central connecting plate 5 is also connected to the four guide rods 4, and a counterweight hanging plate 6 is installed under the central connecting plate 5. Two roller brackets 7 are installed at the bottom of both ends of the counterweight hanging plate 6. Four guide roller brackets 10 are installed on the two roller brackets 7. Eight guide rollers 8 that are respectively slidably connected to the four guide rods 4 are installed on the four guide roller brackets 10 through wheel axles 9.

[0035] In this embodiment, two counterweight hanging plates 11 are installed under the counterweight hanging plate 6, and a pressure plate 18 is connected between the two counterweight hanging plates 11. At least one counterweight weight 19 is installed on the pressure plate 18, and the bottom of the pressure plate 18 is connected to a splint 17 through a pin 16.

[0036] In this embodiment, a latch hanger block 20 is installed on the top of the counterweight hanging plate 6, and the central connecting plate 5 is provided with a hole for the latch hanger block 20 to pass through, as well as a latch mechanism for fixing the latch hanger block 20 on the central connecting plate 5.

[0037] In this embodiment, the latch mechanism includes a photoelectric switch 35 arranged at one end of the hole, and a slide rail 34 and a cylinder 21 arranged at the other end of the hole. A slider 36 is slidably connected to the slide rail 34, and a latch guide device 24 is installed on the slider 36. The latch 22 of the cylinder 21 is slidably connected to the latch guide device 24.

[0038] Specifically, after the photoelectric switch 35 detects that the latch hanger 20 has penetrated into the hole, it controls the latch 22 of the cylinder 21 to extend until it is inserted into the latch hanger 20 to fix the center plate 5 and the counterweight hanger 6. The latch guide device 24 is used to provide a guide for the latch 20. Even if the device is cut off from gas or power, the cylinder 21 can cooperate with the slider 36 to guide and achieve self-locking, which is safer.

[0039] In this embodiment, a first latch connection block 37 is installed at the rear end of the center link plate 5 , and a second latch connection block 38 is installed at the rear end of the counterweight hanging plate 6 .

[0040] Specifically, when the center link plate 5 and the counterweight hanging plate 6 are fixed, the first latch connection block 37 and the second latch connection block 38 are connected to further ensure the safety of the device.

[0041] In this embodiment, two columns 32 and four supports 33 are installed on the base plate 13 , and one end of the four supports 33 is installed on the base plate 13 , and the other end is installed on the two columns 32 .

[0042] In this embodiment, a latch mechanism protective cover 31 covering the latch mechanism is installed on the center link plate 5 , and a lifting mechanism protective cover 30 covering the lifting mechanism is installed on the top plate 3 .

[0043] Specifically, the latch mechanism protective cover 31 is used to protect the latch mechanism and prevent dust and dirt from falling on the latch mechanism; the lifting mechanism protective cover 30 is used to protect the lifting mechanism and prevent dust and dirt from falling on the lifting mechanism.

[0044] The working principle of this embodiment is as follows:

[0045] When the impact test starts, the pin 22 of the air cylinder 21 is first controlled to pull out the pin hanging block 20, the first pin connecting block 37 and the second pin connecting block 38 are loosened, the counterweight hanging plate 6 is separated from the middle connecting plate 5, and performs free fall motion to impact the product on the bottom plate 13.

[0046] Then the motor 26 and the reducer 27 are started, driving the driving wheel 1 to rotate, and the driving wheel 1 drives the driven wheel 23 to rotate through the synchronous belt 28. The driving wheel 1 and the driven wheel 23 simultaneously drive the two screw rods 39 to rotate, and the two screw rods 39 drive the central link plate 5 to descend until the photoelectric switch 35 detects that the pin hanging block 20 of the counterweight hanging plate 6 extends into the hole opened in the central link plate 5, and the pin 22 of the control cylinder 21 is inserted into the pin hanging block 20. At this time, the first pin connecting block 37 and the second pin connecting block 38 are connected, and the central link plate 5 and the counterweight hanging plate 6 are fixed together.

[0047] Then, the motor 26 and the reducer 27 reverse, driving the driving wheel 1 to rotate in the opposite direction, and the driving wheel 1 drives the driven wheel 23 to rotate through the synchronous belt 28. The driving wheel 1 and the driven wheel 23 simultaneously drive the two screw rods 39 to rotate in the opposite direction, and the two screw rods 39 drive the center link plate 5 and the counterweight hanging plate 6 to rise to the initial position.

[0048] Finally, after rising to the initial position, the latch 22 of the air cylinder 21 is continuously controlled to extract the latch hanger block 20, so that the counterweight hanger plate 6 falls freely to impact the product.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An impact testing device, characterized in that: The invention comprises a base (15), a bottom plate (13) is mounted on the base (15), a product is placed on the bottom plate (13), four guide rods (4) are mounted on the bottom plate (13), a top plate (3) is mounted on one end of the four guide rods (4) away from the bottom plate (13), a lifting mechanism is mounted on the top plate (3), the lifting mechanism comprises a reducer (27), a driving wheel (1) and a driven wheel (23), a motor (26) is mounted on the reducer (27), a synchronous belt (28) is connected between the driving wheel (1) and the driven wheel (23), and the output end of the reducer (27) is connected to the driving wheel (1); The driving wheel (1) and the driven wheel (23) are both connected to a screw rod (39), the other ends of the two screw rods (39) pass through the top plate (3) and are connected to the bottom plate (13), a middle connecting plate (5) connected to the four guide rods (4) is connected between the two screw rods (39), a counterweight hanging plate (6) is installed below the middle connecting plate (5), and a plurality of guide rollers (8) are installed at the bottom of both ends of the counterweight hanging plate (6) and are respectively slidably connected to the four guide rods (4); At least one counterweight (19) is hung on the bottom of the counterweight hanging plate (6), and a latch hanging block (20) is installed on the top. The middle connecting plate (5) is provided with a hole for the latch hanging block (20) to pass through, and a latch mechanism for fixing the latch hanging block (20) on the middle connecting plate (5); The latch mechanism comprises a photoelectric switch (35) arranged at one end of the hole, and a slide rail (34) and a cylinder (21) arranged at the other end of the hole, wherein a slider (36) is slidably connected to the slide rail (34), a latch guide device (24) is mounted on the slider (36), and a latch (22) of the cylinder (21) is slidably connected to the latch guide device (24).

2. The impact testing device according to claim 1, characterized in that: Two roller brackets (7) are installed at the bottom of both ends of the counterweight hanging plate (6), and four guide roller brackets (10) are installed on the two roller brackets (7). A plurality of guide rollers (8) are installed on each of the four guide roller brackets (10) through a wheel axle (9) and are respectively connected in a sliding manner to the four guide rods (4).

3. The impact testing device according to claim 1, characterized in that: Two counterweight hanging plates (11) are installed below the counterweight hanging plate (6), a pressing plate (18) is connected between the two counterweight hanging plates (11), at least one counterweight (19) is installed on the pressing plate (18), and a clamping plate (17) is connected to the bottom of the pressing plate (18) through a pin (16).

4. The impact testing device according to claim 1, characterized in that: A first latch connection block (37) is installed at the rear end of the center link plate (5), and a second latch connection block (38) is installed at the rear end of the counterweight hanging plate (6).

5. The impact testing device according to claim 1, characterized in that: Four reducer brackets (2) are mounted on the top plate (3), a reducer support plate (29) is mounted on the four reducer brackets (2), and the reducer (27) is mounted on the reducer support plate (29).

6. The impact testing device according to claim 1, characterized in that: A belt tensioning device (25) is also installed on the top plate (3), and the belt tensioning device (25) is tensionedly connected to the synchronous belt (28).

7. The impact testing device according to claim 1, characterized in that: Four base feet (14) are installed below the base (15), and positioning pieces (12) are installed on the four guide rods (4).

8. The impact testing device according to claim 1, characterized in that: Two columns (32) and four supports (33) are installed on the base plate (13), and one end of the four supports (33) is installed on the base plate (13), and the other end is installed on the two columns (32).

9. The impact testing device according to claim 1, characterized in that: A latch mechanism protective cover (31) covering the latch mechanism is installed on the center link plate (5), and a lifting mechanism protective cover (30) covering the lifting mechanism is installed on the top plate (3).

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