Spring impactor calibration device

Abstract

The present invention discloses a spring impactor calibration device, and relates to the technical field of impactor calibration. The calibration device comprises: a driving part, which is arranged above a supporting part, and a spring impactor is installed on the driving part, and the driving part can drive the spring impactor to move; a side of the part is connected to the supporting part, and the swinging part comprises a swinging member, and the swinging member can swing according to the impact of the spring impactor; on the swinging part, the calibration part comprises a centrifugal mechanism and a stop mechanism, and the centrifugal mechanism can automatically stop according to the swing of the swinging member and contact with the stop mechanism, and the stop mechanism can provide resistance to the swinging member. The present invention applies different resistances to the swinging member by actively adjusting the friction between the stop mechanism and the connecting rod through the mutual cooperation of the centrifugal mechanism and the stop mechanism, and effectively solves the problem of frequently replacing the counterweight block when calibrating various types of spring impactors in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of impactor calibration, in particular to a spring impactor calibration device. Background Art

[0002] The spring impactor calibration device is a laboratory-specific device, mainly used to calibrate the spring impactor. It mainly generates standard energy through the standard mass of each component and the movement of the hammer spring to ensure the accuracy and reliability of the spring impactor in the test.

[0003] The Chinese patent application number 202221462157.2 discloses a 5J spring impact hammer calibration device, including a supporting and transferring mechanism, a 5J positioning indicator frame, an extended bottom plate, a bearing steel swing rod, and a tungsten high-speed steel impact plate, wherein the 5J positioning indicator frame and the supporting and transferring mechanism are both arranged on the top surface of the extended bottom plate, the bearing steel swing rod is vertically arranged on the 5J positioning indicator frame, and the tungsten high-speed steel impact plate is arranged on the lower end of the bearing steel swing rod. The above calibration device has the advantages of high structural strength, good durability, long service life, high reliability, and strong applicability.

[0004] A Chinese patent application with application number 201922128147.X discloses a calibration device for a spring impactor calibration device, comprising a fixed plate, a vertical plate, an adjustment mechanism and a calibration mechanism installed on the top of a base plate; the adjustment mechanism comprises a placement plate, a connecting plate, a vertical plate and a pressure plate, and the fixed plates are slidably connected to the placement plate for placing the impactor body. The calibration device has a simple structure and is convenient for calibration. The design of the fixed block facilitates observation of the rotation angle of the rotating rod on the indicator disk.

[0005] When calibrating the spring impactor, a calibration device similar to the above-mentioned prior art uses a hammer head to hit the swing arm to make it swing upward, and uses the swing arm to push the bracket for recording the swing angle to swing, thereby recording the impact force of the spring impactor. However, when the swing arm loses its impact force during the rotation process and swings downward under the action of gravity, the operator is required to manually stop the swing arm from swinging to prevent the swing arm from damaging the spring impactor during the rotation process. This method has certain risks. If the swing arm moves too fast, it will cause damage to the human body. If the operator fails to stop the swing arm from swinging in time, the spring impactor will be damaged.

[0006] Furthermore, in order to improve the accuracy of detection, additional resistance is usually not applied to the bracket used to record the yaw angle. When the swing arm drives the bracket to rotate, the bracket will rotate at a certain angle under the action of gravity, resulting in a deviation between the detection result and the actual result, and the detection accuracy is poor.

[0007] Meanwhile, when calibrating spring impactors of various models, it is necessary to frequently replace the counterweight, which is time-consuming and labor-intensive. The prior art lacks a calibration device that can adapt to the impact forces of different spring impactors.

[0008] Therefore, it is necessary to invent a spring impactor calibration device to solve the above problems. Summary of the invention

[0009] The object of the present invention is to provide a spring impactor calibration device to solve the problems raised in the above background technology.

[0010] To achieve the above object, the present invention provides the following technical solution: a spring impactor calibration device, comprising a support portion and a spring impactor, the calibration device further comprising:

[0011] A driving part, wherein the driving part is arranged above the supporting part, and the spring impactor is installed on the driving part, and the driving part can drive the spring impactor to move;

[0012] A swinging part, the swinging part is arranged at one side of the driving part and connected to the supporting part, the swinging part includes a swinging member, and the swinging member can swing according to the impact of the spring impactor;

[0013] The calibration part is arranged on the swing part, and the calibration part includes a centrifugal mechanism and a stopping mechanism. The centrifugal mechanism can automatically stop by contacting the stopping mechanism according to the swing of the swing part, and the stopping mechanism can provide resistance to the swing part.

[0014] Preferably, the swinging part also includes two symmetrically arranged vertical plates, which are arranged above the supporting part, and a positioning member is fixedly connected to the middle part of the opposite side of the two vertical plates, and an angle sensor is fixedly installed around the positioning member on the side away from the vertical plate, and a limit rod is fixedly connected to the central area of ​​the positioning member on the side away from the vertical plate, and a rotating ring is sleeved on the outer side of each of the limit rods, and the two rotating rings are commonly connected to a pointer part, and the angle sensor can detect the swinging angle of the pointer part.

[0015] Preferably, a sliding groove is provided at the opposite end of the two limit rods, and a limit groove is provided below each of the sliding grooves. The limit groove is arranged on one side of the swinging member, and a connecting rod is rotatably connected in the sliding groove. The end of the connecting rod close to the swinging member is fixedly connected to the swinging member, and the stop mechanism is arranged in the limit groove. Each connecting rod is provided with an installation groove at the limit groove, one end of the installation groove passes through the connecting rod and is connected to the outside world, and the centrifugal mechanism is arranged in the installation groove.

[0016] Preferably, the centrifugal mechanism includes a plurality of telescopic parts, one end of the telescopic parts is fixedly connected to the mounting groove, the ends of the plurality of telescopic parts away from the mounting groove are commonly connected to a baffle, the connecting rod is provided with a baffle at the limit groove, one end of the baffle is connected to the mounting groove, a sliding part is provided in the baffle, and the sliding part can prevent the baffle from sliding outward.

[0017] Preferably, the stopping mechanism comprises a fixing member, which is fixedly installed in the limiting groove, wherein one end of the fixing member away from the side of the limiting groove is fixedly connected to a buffer member, and one end of the buffer member away from the fixing member is fixedly connected to the stopping member, and the stopping member is slidably connected to the limiting groove.

[0018] Preferably, the buffer is provided with an extrusion chamber at one end close to the connecting rod, and the buffer is filled with a buffer medium. The buffer can fill the internal buffer medium into the extrusion chamber according to the extrusion of the stop member so that the extrusion chamber contacts the outer wall of the connecting rod.

[0019] Preferably, the fixing member is made of ferromagnetic material, and an electromagnet is provided on the stopping member. When the electromagnet is started, the stopping member can actively move toward the fixing member and exert a squeezing force on the buffer member.

[0020] Preferably, the support portion comprises a support plate, a plurality of legs are arranged in an array around the support plate, a movable groove is provided in the top of the support portion and in the area below the driving portion, and the support plate is electrically connected to a controller via a wire.

[0021] Preferably, the driving part includes a screw, one end of which is connected to the driving member, and the other end is fixedly connected to a slide, the bottom of the slide is fixedly connected to a limiting plate, the top of the slide is fixedly installed with a mounting base near one end of the swinging part, and the spring impactor is arranged on the mounting base.

[0022] Preferably, the calibration part also includes a calibration disk, which is fixedly mounted on a vertical plate on one side. The pointer part includes a swing end arranged in a "U" shape and an indicating end cooperating with the calibration disk. The swing end is arranged in multiple sections and is connected by two rotating rings.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention uses the mutual cooperation of devices such as the centrifugal mechanism and the stop mechanism to actively adjust the friction between the stop mechanism and the connecting rod, thereby applying different resistances to the swinging member, effectively solving the problem of frequent replacement of counterweights when calibrating various types of spring impactors in the prior art.

[0025] 2. The present invention uses the centrifugal force generated by the swinging part during its rotation and the setting of the centrifugal mechanism to double-decelerate the swinging part when it moves toward the spring impactor under the action of gravity, and restrict the contact between the swinging part and the spring impactor, thereby effectively avoiding the problem of collision between the swinging part and the spring impactor, which may cause damage to the spring impactor. At the same time, the setting of the centrifugal mechanism and the stop mechanism will not cause negative resistance to the swinging of the swinging part, thereby further improving the detection and calibration accuracy of the device for the impact force of the spring impactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the structure of the driving part and the supporting part of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the swing part of the present invention.

[0029] Figure 4 It is an exploded schematic diagram of the internal structure of the limit rod of the present invention.

[0030] Figure 5 It is a schematic diagram of the partial side view structure of the swing part of the present invention.

[0031] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure at AA in the middle.

[0032] Figure 7 For the present invention Figure 6 Schematic diagram of the mechanism structure at A in the middle.

[0033] Figure 8 It is a half-section schematic diagram of the internal structure of the connecting rod of the present invention.

[0034] In the figure: 1. support part; 11. support plate; 12. support leg; 13. movable groove; 2. driving part; 21. screw; 22. driving member; 23. slide plate; 24. limit plate; 25. mounting base; 3. spring impactor; 4. swing part; 41. swing member; 42. vertical plate; 43. positioning member; 44. limit rod; 45. rotating ring; 46. sliding groove; 47. limit groove; 48. connecting rod; 49. stop groove; 5. calibration part; 51. centrifugal mechanism; 511. telescopic member; 512. baffle; 513. sliding member; 52. stop mechanism; 521. fixing member; 522. buffer member; 523. stop member; 524. extrusion chamber; 53. calibration disk; 6. pointer part; 61. swing end; 62. indicating end. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] To improve the accuracy of the calibration device, such as Figure 1-Figure 8 As shown, the first embodiment of the present invention provides a spring impactor calibration device, including a support part 1 and a spring impactor 3, a driving part 2 is arranged above the support part 1, and the spring impactor 3 is installed on the driving part 2, the driving part 2 can drive the spring impactor 3 to move, a swinging part 4 is arranged on the side of the driving part 2 where the spring impactor 3 is installed, and the swinging part 4 is connected to the support part 1, the swinging part 4 includes a swinging member 41, the swinging member 41 can swing according to the impact of the spring impactor 3, a calibration part 5 and a pointer part 6 are arranged on the swinging part 4, the pointer part 6 is driven to swing by the swinging part 4, and the impact force of the spring impactor 3 is detected in cooperation with the calibration part 5.

[0037] In this embodiment, the support part 1 includes a support plate 11, and a plurality of legs 12 are arranged in an array around the support plate 11. A movable groove 13 is provided in the area at the top of the support part 1 and below the driving part 2. The support plate 11 is electrically connected to a controller through a wire. The controller controls each electrical component to work by electronic control. The controller is connected to each electrical component through a wire, thereby facilitating remote control of each electrical component in the device and recording data fed back by each electrical component.

[0038] In this embodiment, the driving part 2 includes a screw 21, one end of which is connected to the driving member 22, and the other end is fixedly connected to a slide plate 23, the bottom of the slide plate 23 is fixedly connected to a limiting plate 24, and the top of the slide plate 23 is fixedly installed with a mounting base 25 at one end close to the swinging part 4, the spring impactor 3 is arranged on the mounting base 25, the support plate 11 is fixedly connected to a fixing seat, and a threaded hole matching the screw 21 is opened on the fixing seat, and the screw 21 is threadedly connected to the fixing seat.

[0039] When the spring impactor 3 needs to be moved in the direction of the swinging part 4, the driving member 22 can be rotated by electronic control or manual control, so that the lead screw 21 drives the spring impactor 3 to move in the direction of the swinging part 4 through the slide plate 23, thereby completing the detection of the impact force of the spring impactor 3. By rotating the driving member 22 by electronic control, the moving stroke of the spring impactor 3 can be accurately controlled to avoid the problem of excessive movement of the spring impactor 3 resulting in a large deviation between the detection result and the actual result.

[0040] In this embodiment, the swinging part 4 also includes two symmetrically arranged vertical plates 42, which are arranged above the supporting part 1. A positioning member 43 is fixedly connected to the middle part of the opposite side of the two vertical plates 42, and a limiting rod 44 is fixedly connected to the central area of ​​the positioning member 43 away from the side of the vertical plate 42. A rotating ring 45 is sleeved on the outer side of each limiting rod 44, and the two rotating rings 45 are commonly connected to a pointer part 6. A sliding groove 46 is provided at the opposite end of the two limiting rods 44, and a connecting rod 48 is rotatably connected in the sliding groove 46. The end of the connecting rod 48 close to the swinging member 41 is fixedly connected to the swinging member 41, and a weight for counterweight is provided on the swinging member 41.

[0041] In this embodiment, angle sensors are fixedly installed around the positioning member 43 on one side away from the vertical plate 42. The angle sensors can detect the swing angle of the pointer part 6 and transmit the detected swing angle of the pointer part 6 to the controller for recording.

[0042] The calibration part 5 also includes a calibration disk 53, which is fixedly mounted on a vertical plate 42 on one side. The pointer part 6 includes a swing end 61 arranged in a "U" shape and an indicating end 62 cooperating with the calibration disk 53. The swing end 61 is arranged in multiple sections and is connected through two rotating rings 45.

[0043] When in use, the spring impactor 3 is first installed on the mounting base 25, and the controller controls the rotating motor arranged on one side of the driving member 22 to drive the driving member 22 to rotate, so that the lead screw 21 drives the slide plate 23 to move in the direction of the swing member 41. When the bottom of the swing member 41 contacts the hammer head of the spring impactor 3, the swing member 41 will trigger the release mechanism of the hammer head of the spring impactor 3, so that the spring impactor 3 releases the impact force on the swing member 41. Figure 1 Taking the direction shown as an example, under the action of the impact force, the swinging member 41 will swing to the upper left with the connecting rod 48 as the fulcrum. During this process, the swinging member 41 contacts the swinging end 61 of the pointer part 6 and pushes the swinging end 61 to rotate with the limit rod 44 as the fulcrum, so that the indicating end 62 connected to the swinging end 61 moves on the calibration disk 53 and records the deflection angle of the swinging member 41 in real time. At the same time, the rotation angle of the swinging end 61 is recorded in real time by the arranged angle sensor. The data fed back to the controller by the angle sensor and the angle displayed by the indicating end 62 on the calibration disk 53 are compared. If the two values ​​are the same, it means that the calibration data is accurate. If the value detected by the angle sensor is greater than the value of the calibration disk 53, it means that the pointer part 6 is bent after repeated use or the pointer part 6 rotates under the action of gravity after being separated from the swinging member 41 due to insufficient resistance. The impact force of the spring impactor 3 is detected by adopting two sets of different detection methods, thereby improving the detection accuracy of the calibration device.

[0044] In order to solve the problem that when the swing arm loses impact force during rotation and swings downward under the action of gravity, the operator needs to manually stop the swing arm from swinging, and when calibrating various types of spring impactors 3, the counterweight block needs to be frequently replaced.

[0045] In another embodiment of the present invention, a limit groove 47 is provided under each sliding groove 46, and the limit groove 47 is arranged on the side where the swinging member 41 swings under the impact force of the spring impactor 3. The calibration part 5 includes a centrifugal mechanism 51 and a stop mechanism 52. The centrifugal mechanism 51 can automatically stop by contacting the stop mechanism 52 according to the swinging of the swinging member 41. The stop mechanism 52 can provide resistance to the swinging member 41. The stop mechanism 52 is arranged in the limit groove 47. Each connecting rod 48 is provided with an installation groove at the limit groove 47. One end of the installation groove passes through the connecting rod 48 and is connected to the outside world. The centrifugal mechanism 51 is arranged in the installation groove.

[0046] In this embodiment, the centrifugal mechanism 51 includes a plurality of telescopic members 511, one end of the telescopic members 511 is fixedly connected to the mounting groove, and one end of the plurality of telescopic members 511 away from the mounting groove is commonly connected to a baffle 512, a connecting rod 48 is provided with a baffle groove 49 at the limit groove 47, one end of the baffle groove 49 is connected to the mounting groove, a sliding member 513 is provided in the baffle groove 49, and the sliding member 513 can prevent the baffle 512 from sliding outward.

[0047] In this embodiment, the stopping mechanism 52 includes a fixing member 521, which is fixedly installed in the limiting groove 47. The end of the fixing member 521 away from the side of the limiting groove 47 is fixedly connected to a buffer member 522, and the end of the buffer member 522 away from the fixing member 521 is fixedly connected to a stopping member 523, and the stopping member 523 is slidably connected to the limiting groove 47.

[0048] The buffer 522 is specifically a flexible telescopic tube. An extrusion chamber 524 is provided at one end of the buffer 522 close to the connecting rod 48. The buffer 522 is filled with a buffer medium. The buffer 522 can fill the internal buffer medium into the extrusion chamber 524 according to the extrusion of the stop member 523 so that the extrusion chamber 524 contacts the outer wall of the connecting rod 48. The fixing member 521 is made of ferromagnetic material. The stop member 523 is provided with an electromagnet. When the electromagnet is started, the stop member 523 can actively move toward the direction of the fixing member 521 and apply an extrusion force to the buffer 522.

[0049] When the impact force of the spring impactor 3 needs to be detected and calibrated by the calibration device, the spring impactor 3 is driven to move in the direction of the swinging part 4 by the driving part 2, and the hammer head of the spring impactor 3 is brought into contact with the swinging member 41 and the impact force is released to make the swinging member 41 swing along the direction of the impact force, and drive the pointer part 6 to swing, and the deflection angle of the pointer part 6 is recorded by the calibration disk 53 and the angle sensor, and the values ​​recorded by the calibration disk 53 and the angle sensor are compared, so as to improve the detection accuracy of the impact force of the spring impactor 3 by the calibration device.

[0050] In this process, for the sake of convenience, Figure 6 and Figure 7 The direction shown is used as an example. When the swing member 41 rotates counterclockwise under the impact force applied by the spring impactor 3, the swing member 41 will first drive the connecting rod 48 to rotate synchronously. At this time, the connecting rod 48 rotates counterclockwise in the sliding groove 46. During this process, since the sliding member 513 is arranged in the retaining groove 49 in the connecting rod 48, under the action of gravity, the sliding member 513 will slide to the left side of the retaining groove 49 and block the baffle 512, so that the baffle 512 cannot slide out of the connecting rod 48 under the action of centrifugal force. In this state, the rotation of the connecting rod 48 will not be affected by external factors, thereby ensuring that the swing member 41 swings under the impact force of the spring impactor 3, avoiding the problem that the swing member 41 is subjected to excessive resistance during the swinging process, resulting in a deviation between the detection result and the actual result.

[0051] When the impact force applied to the swing member 41 gradually decreases and disappears as the swing member 41 swings upward, the swing member 41 can rotate clockwise under the action of gravity and move in the direction of the spring impactor 3. At this time, since the mass of the swing member 41 is much greater than the mass of the sliding member 513, the rotation speed of the swing member 41 under the action of inertia is much greater than the movement speed of the sliding member 513. Therefore, when the swing member 41 rotates downward, the sliding member 513 slides upward relative to the connecting rod 48, so that the sliding member 513 moves from the left side of the retaining groove 49 to the right side of the retaining groove 49, thereby releasing the obstruction of the baffle 512. At this time, under the action of the centrifugal force generated by the rotation of the connecting rod 48, the baffle 512 can drive the extension rod 48 to rotate. The retracted member 511 is extended and extends out of the connecting rod 48. When the baffle 512 moves to the top of the stop member 523, the stop member 523 can be driven to move toward the fixing member 521. In this state, the kinetic energy of the swing member 41 is buffered by the buffer member 522 arranged between the stop member 523 and the fixing member 521, thereby reducing the rotation speed of the swing member 41. At the same time, when the buffer member 522 is squeezed, the buffer medium therein can enter the squeezing chamber 524 and make the squeezing chamber 524 contact with the connecting rod 48, thereby increasing the friction force with the connecting rod 48 and further reducing the rotation speed of the swing member 41, thereby avoiding the swing member 41 from colliding with the spring impactor 3 and causing the spring impactor 3 to be damaged.

[0052] It should be noted that the length of the stop member 523 does not exceed the depth of the limit groove 47. When the sliding member 513 is in the connecting rod 48, the connecting rod 48 does not contact the stop member 523. The buffer medium arranged in the buffer member 522 can be any gas or liquid that is fluid and cost-effective.

[0053] When it is necessary to adjust the calibration device according to different models of spring impactors 3, the controller controls the electromagnet set on the stop member 523 to start working, so that the stop member 523 can move in the direction of the fixed member 521 under the action of magnetic attraction, and actively squeeze the buffer medium in the buffer member 522 to make the extrusion chamber 524 expand in the direction of the connecting rod 48 and apply resistance to the connecting rod 48, thereby increasing the force required for the swing member 41 to swing in disguise, effectively solving the problem of frequent replacement of counterweight blocks when calibrating various models of spring impactors 3 in the prior art.

[0054] The telescopic member 511 is specifically a spring telescopic rod. When the swing member 41 stops moving under the action of the buffer member 522, the centrifugal force of the connecting rod 48 disappears. The baffle 512 can move in the direction of the connecting rod 48 under the elastic force of the telescopic member 511. At the same time, the sliding member 513 can move to the left side of the retaining groove 49 under the action of gravity, and the baffle 512 is limited again. In order to prevent the movement of the sliding member 513 and the baffle 512 from interfering with each other, side plates slidably connected to the side walls of the mounting groove can be provided on both sides of the baffle 512, so that the baffle 512 can block the sliding member 513 when it is not fully received in the mounting groove. When the baffle 512 is fully received in the mounting groove, the sliding member 513 can slide to the left, and a gap is provided between the stop member 523 and the side wall of the limiting groove 47, so that the sliding member 513 can enter the limiting groove 47 and contact the stop member 523.

[0055] It should be particularly noted that the present invention, through the mutual cooperation of the centrifugal mechanism 51 and the stop mechanism 52, on the one hand, actively adjusts the friction between the stop mechanism 52 and the connecting rod 48, thereby applying different resistances to the swing member 41, effectively solving the problem of frequent replacement of counterweights when calibrating various types of spring impactors 3 in the prior art. On the other hand, through the centrifugal force generated by the swing member 41 during the rotation process and the setting of the centrifugal mechanism 51, when the swing member 41 moves toward the spring impactor 3 under the action of gravity, the swing member 41 can be double-decelerated, and the swing member 41 is restricted from contacting the spring impactor 3, effectively avoiding the problem that the swing member 41 collides with the spring impactor 3, causing the spring impactor 3 to be damaged. At the same time, the setting of the centrifugal mechanism 51 and the stop mechanism 52 will not cause negative resistance to the swing of the swing member 41, further improving the detection and calibration accuracy of the device for the impact force of the spring impactor 3.

[0056] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spring impactor calibration device, comprising a support portion (1) and a spring impactor (3), characterized in that: It also includes a driving part (2) which is arranged above the supporting part (1); a spring impactor (3) is arranged on the driving part (2); and the driving part (2) is capable of driving the spring impactor (3) to move; A swinging portion (4) is arranged on one side of the driving portion (2) and connected to the supporting portion (1), the swinging portion (4) comprising a swinging member (41) and two vertical plates (42), the swinging member (41) being capable of swinging according to the impact of the spring impactor (3), a positioning member (43) being provided in the middle of one side opposite to the other of the two vertical plates (42), a limiting rod (44) being provided in the central area of ​​the side of the positioning member (43) away from the vertical plates (42), a sliding groove (46) being provided at one end opposite to the other of the two limiting rods (44), and a limiting groove (47) being provided below the sliding groove (46); The calibration part (5) is arranged on the swing part (4), the calibration part (5) comprising a centrifugal mechanism (51) and a stop mechanism (52), the centrifugal mechanism (51) can automatically stop by contacting the stop mechanism (52) according to the swing of the swing member (41), the stop mechanism (52) is arranged in the limit groove (47), the stop mechanism (52) can provide resistance to the swing member (41), the stop mechanism (52) comprises a fixing member (521), the fixing member (521) is arranged in the limit groove (47), a buffer member (522) is arranged at one end of the fixing member (521) away from the side of the limit groove (47), a stop member (523) is arranged at one end of the buffer member (522) away from the fixing member (521), and the stop member (523) is slidably connected to the limit groove (47).

2. The calibration device according to claim 1, characterized in that: The vertical plate (42) is arranged above the support portion (1), and angle sensors are fixedly mounted around the positioning member (43) on a side away from the vertical plate (42). A rotating ring (45) is sleeved on the outer side of each limit rod (44), and the two rotating rings (45) are commonly connected to a pointer portion (6). The angle sensor can detect the swing angle of the pointer portion (6).

3. The calibration device according to claim 2, characterized in that: A limiting groove (47) is arranged on one side of the swing member (41), a connecting rod (48) is rotatably connected in the sliding groove (46), one end of the connecting rod (48) close to the swing member (41) is fixedly connected to the swing member (41), each connecting rod (48) is provided with a mounting groove located at the limiting groove (47), one end of the mounting groove passes through the connecting rod (48) and is in communication with the outside, and a centrifugal mechanism (51) is arranged in the mounting groove.

4. The calibration device according to claim 3, characterized in that: The centrifugal mechanism (51) comprises a plurality of telescopic members (511), one end of the telescopic members (511) being fixedly connected to the mounting groove, one end of the plurality of telescopic members (511) being away from the mounting groove being commonly connected to a baffle (512), a baffle groove (49) being provided on the connecting rod (48) at the limiting groove (47), one end of the baffle groove (49) being connected to the mounting groove, a sliding member (513) being provided in the baffle groove (49), and the sliding member (513) being capable of preventing the baffle (512) from sliding outward.

5. The calibration device according to claim 4, characterized in that: An extrusion chamber (524) is provided at one end of the buffer member (522) close to the connecting rod (48), and the buffer member (522) is filled with a buffer medium. The buffer member (522) can fill the internal buffer medium into the extrusion chamber (524) according to the extrusion of the stop member (523), so that the extrusion chamber (524) contacts the outer side wall of the connecting rod (48).

6. The calibration device according to claim 5, characterized in that: The fixing member (521) is made of ferromagnetic material, and an electromagnet is provided on the stop member (523). When the electromagnet is activated, the stop member (523) can actively move towards the fixing member (521) and exert a squeezing force on the buffer member (522).

7. The calibration device according to claim 6, characterized in that: The support portion (1) comprises a support plate (11), a plurality of legs (12) are arranged in an array around the support plate (11), a movable groove (13) is provided in an area at the top of the support portion (1) and below the drive portion (2), and the support plate (11) is electrically connected to a controller via a wire.

8. The calibration device according to claim 7, characterized in that: The driving part (2) comprises a lead screw (21), one end of the lead screw (21) is connected to a driving member (22), and the other end is fixedly connected to a slide plate (23), the bottom of the slide plate (23) is fixedly connected to a limit plate (24), and a mounting base (25) is fixedly mounted on one end of the top of the slide plate (23) close to the swinging part (4), and the spring impactor (3) is arranged on the mounting base (25).

9. The calibration device according to claim 8, characterized in that: The calibration portion (5) further comprises a calibration disk (53), the calibration disk (53) being fixedly mounted on a vertical plate (42) on one side. The pointer portion (6) comprises a swing end (61) arranged in a "U" shape and an indicating end (62) cooperating with the calibration disk (53), the swing end (61) being arranged in multiple sections and being connected via two rotating rings (45).

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