An automatic rebound tester calibrator

Abstract

The present invention discloses a fully automatic rebound tester calibrator, which comprises a base, a steel anvil, a detection platform and a driving device. A steel anvil is arranged at one end of the base, and a detection platform is slidably arranged at the other end of the base. The detection platform is of a split tailstock type. The driving device is connected to the detection platform. A clamping mechanism and a detection mechanism are arranged on the detection platform. The clamping mechanism is used for clamping and fixing the movement of the rebound tester, and the detection mechanism is used for detecting the performance parameters of the movement. The impact rod of the movement and the anvil core on the steel anvil are located on the same axis. In the present invention, errors caused by relying on sensory judgment and human judgment can be avoided; the detection platform is of a split tailstock type, which can be used for multiple purposes and can detect various rebound testers, solving the problem that there is no calibrator for some specifications of rebound testers at present, and having the advantages of high precision, easy operation, high efficiency, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring instruments, and particularly relates to a fully automatic detector for rebound hammers. Background Art

[0002] A rebound hammer is an instrument used to detect the compressive strength of materials such as concrete, mortar, bricks, rocks, and rubber. Its principle is to obtain a rebound value by striking the surface of the object to be measured, and use the rebound value as an index related to the compressive strength of the object to be measured to estimate the compressive strength of the object to be measured. To ensure that the rebound hammer has a unified measurement benchmark, it needs to be calibrated before use.

[0003] Rebound hammers are widely used in the aspect of concrete compressive strength and the quantity is large. The existing detectors are purely mechanical, relying on manual operation. Various parameters need to be measured manually step by step in sequence, and the efficiency is relatively low, which cannot meet the large-scale metrological calibration work. For some technical indicators, it often requires human sensory judgment, and the accuracy and objective consistency of the measurement data cannot be fully guaranteed. Moreover, the purely mechanical detector for rebound hammers requires users to learn for a long time and accumulate experience, so it is easy to have human errors in the measurement data. The existing detectors are split-type, and the measurement of the stiffness of the impact spring requires a separate spring tester to complete. The scale graduation of this spring tester is 0.5 mm accuracy, which cannot meet the accuracy requirements for measuring the stiffness of the impact spring.

[0004] There are many specifications and models of rebound hammers. The existing purely mechanical detectors can only calibrate the M225 type rebound hammer, and the L20 type, L75 type, H450 type, and H550 type rebound hammers cannot be calibrated. The existing purely mechanical detectors are all manually measured and manually recorded, and the test reports are filled in manually later. The data is not easy to store and save, and some of the measurement data are descriptive statements. For example, when measuring the tensile length of the impact spring when it is struck but not struck, the judgment of this state often varies from person to person. Since the promulgation of the rebound hammer calibration regulation, there has still been no corresponding supporting equipment, which has caused certain technical obstacles to the popularization and use of rebound hammers. Summary of the Invention

[0005] The purpose of the present invention is to provide a fully automatic detector for rebound hammers to solve the problems existing in the above-mentioned prior art, so that the detector is applicable to different models of rebound hammers and has the advantages of high precision, easy operation, high efficiency, etc.

[0006] To achieve the above purpose, the present invention provides the following solutions:

[0007] The present invention provides a fully automatic rebound tester calibrator, which includes a base, a steel anvil, a detection platform and a driving device. One end of the base is provided with the steel anvil, and the other end of the base is slidably provided with the detection platform. The detection platform is of a split tailstock type. The driving device is connected to the detection platform. The detection platform is provided with a clamping mechanism and a detection mechanism. The clamping mechanism is used for clamping and fixing the movement of the rebound tester, and the detection mechanism is used for detecting the performance parameters of the movement. The impact rod of the movement and the anvil core on the steel anvil are located on the same axis.

[0008] Preferably, the steel anvil includes a common steel anvil and a high-strength steel anvil. The common steel anvil and the high-strength steel anvil are arranged side by side on the base and respectively correspond to one detection platform.

[0009] Preferably, the driving device includes a motor, a ball screw and a dragging nut. The main shaft of the motor is connected to the ball screw. The dragging nut is arranged on the ball screw. The dragging nut is located in the middle of the two detection platforms and is respectively fixedly connected to the two detection platforms. The motor is a servo motor. A plurality of linear guides are arranged on the base, and a plurality of linear sliders are arranged on the bottom surface of the detection platform. Each linear slider respectively matches with one linear guide.

[0010] Preferably, the detection platform includes a sliding platform and a tailstock arranged on the same linear guide. The sliding platform and the tailstock are locked by a locking mechanism. The locking mechanism includes a strip plate and a locking bolt with a handle. One end of the strip plate is fixedly connected to the upper surface of the sliding platform. A waist-shaped hole is opened at the other end of the strip plate. The locking bolt is arranged in the waist-shaped hole and the bottom surface of the locking bolt can contact the upper surface of the tailstock. The clamping mechanism and the detection mechanism are arranged on the sliding platform, and tail cover locking holes of the movement are arranged side by side on the tailstock.

[0011] Preferably, the clamping mechanism includes a variable-rail fixture, a linear motor and a vertical guiding mechanism. The variable-rail fixture includes two vertical and parallel plates and a sensor fixing seat. The plates are slidably arranged on the sliding platform through a sliding seat. The sliding platform is provided with a front positioning post and a rear positioning post. The sliding seat can touch the front positioning post or the rear positioning post. A guiding key is correspondingly arranged on each plate. One end of the guiding key is rotatably arranged on the plate, and the other end of the guiding key is slidably connected to the plate through the vertical guiding mechanism. The linear motor is connected to the vertical guiding mechanism through a lifting nut. The guiding key is used for receiving the movement.

[0012] Preferably, the vertical guiding mechanism includes a lifting plate with a sliding groove and a vertical guiding block. The sliding groove is sleeved on the vertical guiding block. One end of the lifting plate is connected to the lifting nut, and the other end of the lifting plate is rotatably connected to the guiding key through a pin shaft.

[0013] Preferably, the clamping mechanism further includes a casing clamp, which includes a front top plate, a V-shaped support, and a rear baffle. The rear baffle is arranged on the tailstock and is arranged side by side with the tail cover locking hole. A plurality of the V-shaped supports are respectively arranged on the sliding platform, and the V-shaped supports are located between the front top plate and the rear baffle.

[0014] Preferably, the detection mechanism includes a scale cover plate, a pointer block, a pointer shaft, and a photoelectric sensor. The photoelectric sensor includes a grating and a plurality of optocouplers. The scale cover plate is rotatably arranged on one of the vertical plates. The scale cover plate is provided with a waist-shaped hole, the optocouplers, and the pointer shaft. The pointer block is slidably arranged on the pointer shaft, and the pointer block with scale lines is located inside the waist-shaped hole. The grating is connected to the pointer block, and the grating matches the groove on the optocoupler.

[0015] Preferably, the detection mechanism further includes a suspended pressure sensor. Two of the pressure sensors are symmetrically arranged on the side surface of the sensor fixing seat, and an opening and closing support is arranged on the pressure sensor.

[0016] Preferably, it further includes a control host, and the pressure sensor, the photoelectric sensor, the motor, and the linear motor are respectively electrically connected to the control host.

[0017] The present invention has achieved the following technical effects compared with the prior art:

[0018] In the present invention, the errors caused by relying on sensory judgment and human judgment can be avoided; the detection platform is a split type of the tailstock, which can be used for multiple purposes and detect various rebound hammers, solving the problem that some specifications of rebound hammers currently have no calibrator for calibration, and having the advantages of high precision, easy operation, and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Structural schematic of the full-automatic rebound hammer calibrator of the present invention Figure 1 ;

[0021] Figure 2 Structural schematic of the full-automatic rebound tester of the present invention Figure 2 ;

[0022] Figure 3 Structural schematic of the rebound tester;

[0023] Figure 4 Structural schematic of the full-automatic rebound tester of the present invention Figure 3 ;

[0024] Figure 5 Structural schematic of the full-automatic rebound tester of the present invention Figure 4 ;

[0025] Figure 6 Structural schematic of the detection platform in the full-automatic rebound tester of the present invention;

[0026] Figure 7 Structural schematic of the variable-rail fixture in the full-automatic rebound tester of the present invention;

[0027] Figure 8 Layout schematic of the positioning posts in the full-automatic rebound tester of the present invention Figure 1 ;

[0028] Figure 9 Layout schematic of the positioning posts in the full-automatic rebound tester of the present invention Figure 2 ;

[0029] Wherein: 1 - base, 2 - servo motor, 3 - ball screw, 4 - driving nut, 5 - sliding platform, 6 - tailstock, 7 - locking mechanism, 8 - tail cover locking hole, 9 - linear guide rail, 10 - front positioning post, 11 - rear positioning post, 12 - vertical plate, 13 - guiding key, 14 - vertical guiding mechanism, 15 - linear motor, 16 - front top plate, 17 - V-shaped support, 18 - rear baffle, 19 - opening and closing support, 20 - pressure sensor, 21 - scale cover plate, 22 - pointer block, 23 - grating, 24 - optocoupler, 25 - ordinary steel anvil, 26 - high-strength steel anvil, 27 - machine shell, 28 - impact hammer, 29 - spring seat, 30 - tail cover, 31 - impact pull spring, 32 - front cover, 33 - large compression spring, 34 - guiding flange, 35 - hook. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] The object of the present invention is to provide a fully automatic rebound tester to solve the problems existing in the prior art, so that the tester is applicable to rebound testers of different models and has the advantages of high precision, easy operation, high efficiency, etc.

[0032] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] As Figures 1 to 9 shown: This embodiment provides a fully automatic rebound tester, which includes a base 1, a steel anvil, a detection platform and a driving device. A steel anvil is provided at one end of the base 1, and a detection platform is slidably provided at the other end of the base 1. The detection platform is of a tailstock split type. The driving device is connected to the detection platform. A clamping mechanism and a detection mechanism are provided on the detection platform. The clamping mechanism is used to clamp and fix the movement of the rebound tester, and the detection mechanism is used to detect the performance parameters of the movement. The impact rod of the movement and the anvil core on the steel anvil are located on the same axis. The steel anvil includes a common steel anvil 25 and a high-strength steel anvil 26. The common steel anvil 25 and the high-strength steel anvil 26 are arranged side by side on the base 1, and a detection platform is respectively provided corresponding to each of them. Designing two steel anvils (the common steel anvil 25 and the high-strength steel anvil 26) enables a tester to be compatible with the calibration of multiple models of rebound testers. The common steel anvil 25 and the detection platform are used for calibrating M225 type rebound testers, L75 type rebound testers, and L20 type rebound testers. The high-strength steel anvil 26 and the detection platform are used for calibrating H550 type rebound testers and H450 type rebound testers. Among them, the base 1 is made of steel plates through processes such as cutting, welding, and stress relief aging, and has good rigidity, light weight, and no deformation.

[0034] The driving device includes a motor, a ball screw 3 and a dragging nut 4. The main shaft of the motor is connected to the ball screw 3. The dragging nut 4 is arranged on the ball screw 3. The dragging nut 4 is located in the middle of the two detection platforms and is respectively fixedly connected to the two detection platforms. In this embodiment, one servo motor 2 and the ball screw 3 are used to drive the two detection platforms to move, or two servo motors 2 and the ball screw 3 can also be used to drive one detection platform each to move. The motor is a servo motor 2, which can achieve precise control of displacement dimensions and numerical control linear motion. A number of linear guides 9 are provided on the base 1, and a number of linear sliders are provided on the bottom surface of the detection platform. Each linear slider is respectively matched with a linear guide 9. The closed-loop control feedback by the displacement sensor has a detection accuracy of 0.01 mm.

[0035] The detection platform includes a sliding platform 5 and a tailstock 6 arranged on the same linear guide rail 9. The sliding platform 5 and the tailstock 6 are locked by a locking mechanism 7. The locking mechanism 7 includes a strip-shaped plate and a locking bolt with a handle. One end of the strip-shaped plate is fixedly connected to the upper surface of the sliding platform 5. A waist-shaped hole is formed at the other end of the strip-shaped plate. The locking bolt is arranged in the waist-shaped hole and the bottom surface of the locking bolt can contact the upper surface of the tailstock 6. A clamping mechanism and a detection mechanism are arranged on the sliding platform 5, and tail cover locking holes 8 of the movement core are arranged side by side on the tailstock 6.

[0036] The clamping mechanism includes a variable-rail fixture, a linear motor 15 and a vertical guiding mechanism 14. The variable-rail fixture includes two vertically arranged and parallel vertical plates 12 and a sensor fixing seat 19. The sensor fixing seat 19 cannot slide back and forth relative to the sliding platform 5. The vertical plates 12 are slidably arranged on the sliding platform 5 through a sliding seat. Front positioning posts 10 and rear positioning posts 11 are arranged on the sliding platform 5. The sliding seat can touch the front positioning post 10 or the rear positioning post 11. A guiding key 13 is correspondingly arranged on each vertical plate 12. One end of the guiding key 13 is rotatably arranged on the vertical plate 12, and the other end of the guiding key 13 is slidably connected to the vertical plate 12 through the vertical guiding mechanism 14. The linear motor 15 is connected to the vertical guiding mechanism 14 through a screw rod and a lifting nut. The guiding key 13 is used to hold the movement core. Among them, the vertical guiding mechanism 14 includes a lifting plate with a sliding groove and a vertical guiding block. The sliding groove is sleeved on the vertical guiding block. One end of the lifting plate is connected to the lifting nut, and the other end of the lifting plate is rotatably connected to the guiding key 13 through a pin shaft.

[0037] In this embodiment, the vertical plates 12, the scale cover plate 21 and the vertical guiding mechanism 14 can slide back and forth relative to the sliding platform 5, and can be compatible with various models of rebound hammers because the scale positions of various types of rebound hammers and the sliding positions of the guiding flanges 34 are inconsistent. In this example, two front positioning posts 10 and two rear positioning posts 11 are arranged at the front and rear of each sliding platform 5. When the sliding seat slides to the front positioning post 10, it is used to calibrate the L75 type and L20 type rebound hammers. When the sliding seat slides to the rear positioning post 11, it is used to calibrate the M225 type rebound hammer. One end of the guiding key 13 of the variable rail has a swing and variable rail function. When collecting the rebound value of the rebound hammer, the guiding key 13 is in a non-horizontal direction. At this time, the pointer only follows up after the impact hammer 28 is fired to display the rebound value; when measuring parameters such as the decoupling point of the measuring impact hammer 100 and the zero point takeoff, it is necessary to place the variable rail guiding key 13 in a state parallel to the cylinder body to realize data collection. This embodiment realizes full-automatic detection, and multiple technical indicators are collected at one time, which not only improves the detection efficiency but also reduces the operation difficulty, and the detection conclusion will not vary from person to person.

[0038] The clamping mechanism further includes a housing fixture, which includes a front top plate 16, a V-shaped support 17, and a rear baffle 18. The rear baffle 18 is arranged on the tailstock 6 and is arranged side by side with the tail cover locking hole 8. A plurality of V-shaped supports 17 are respectively arranged on the sliding platform 5, and the V-shaped supports 17 are located between the front top plate 16 and the rear baffle 18. The V-shaped supports 17 are made of polyoxymethylene or bakelite and are used to fix the housing 27 of the rebound hammer. The housing 27 and the movement are placed side by side, which is convenient for observing and comparing the disassembly structure of the rebound hammer on the one hand, and convenient for aligning the scale line on the housing 27 with the scale line on the scale cover plate 21 on the other hand.

[0039] The detection mechanism includes a scale cover plate 21, a pointer block 22, a pointer shaft, and a photoelectric sensor. The photoelectric sensor includes a grating 23 and a plurality of optocouplers 24. The scale cover plate 21 is rotatably arranged on a vertical plate 12. The scale cover plate 21 is provided with a waist-shaped hole, an optocoupler 24, and a pointer shaft. The pointer block 22 is slidably arranged on the pointer shaft, and the pointer block 22 with a scale line is located inside the waist-shaped hole. The grating 23 is connected to the pointer block 22, and the grating 23 matches the groove on the optocoupler 24. During use, the pointer block 22 contacts the impact hammer 28 of the movement, and the photoelectric sensor is used to collect the rebound value data. Moreover, the pointer block 22 is provided with a scale line and has the function of indicating the mechanical scale. The detection mechanism further includes a suspended pressure sensor 20. Two pressure sensors 20 are symmetrically arranged on the side surface of the sensor fixing seat 19, and an opening and closing support 19 is arranged on the pressure sensor 20. The pressure sensor 20 uses two S-type sensors with the same range and an accuracy of 0.3 level or above, which can accurately collect the spring tension and meet the requirements of the regulations; the pressure sensor 20 should be kept in a suspended state, so as to fully ensure that there is no interference when measuring the force of the impact tension spring 31, and the measured pressure value is pure, stable, and reliable.

[0040] It further includes a control host. The pressure sensor 20, the photoelectric sensor, the servo motor 2, and the linear motor 15 are respectively electrically connected to the control host. The control host is provided with a signal acquisition board and a software control program. The pressure sensor 20, the value acquisition system of the photoelectric sensor, and the displacement sensor of the servo motor 2 are all connected to the signal acquisition board. The signal acquisition board uses a 16-bit high-precision AD to ensure accurate data. The control host uses a touch screen and is built-in with a detector operation software, which has functions such as data acquisition, storage, uploading, printing, and networking.

[0041] The specific use process of this embodiment is as follows:

[0042] First, unscrew the front cover 32 and the tail cover 30 of the rebound hammer, take out the movement, place the housing 27 of the rebound hammer on the V-shaped support 17 and lock the tailstock 6; disconnect the guiding flange 34 of the movement from the impact hammer 28, lift the scale cover plate 21, and align the guiding groove of the guiding flange 34 of the movement with the guiding key 13 between the two vertical plates 12 and place it in. Open the front end opening and closing support 19, place the spring seat 29 and fix it. Place the large compression spring 33 from the direction of the tail cover locking hole 8, tighten the tail cover 30 and cover the scale cover plate 21; select the model of the rebound hammer to be detected on the control host and click Start Detection. The control host sends a start command to the signal acquisition board and detects whether the guiding key 13 is in a horizontal state. If not, it will first drive the linear motor 15 to drive the vertical guiding mechanism 14 to make the guiding key 13 in a horizontal position.

[0043] Open and connect the software control program on the control host, start to control the servo motor 2 to rotate, the servo motor 2 drives the sliding platform 5 to move towards the anvil core direction, the signal acquisition board real-time collects the accurate displacement value of the sliding platform 5 through the displacement sensor on the servo motor 2, and the pressure sensor 20 real-time collects the pressure value of the impact tension spring 31. Along with the movement of the sliding platform 5, the impact tension spring 31 starts to change from the compressed state to the stretched state. When the pressure value is zero, record the displacement value x corresponding to the impact tension spring 31. 0 . The sliding platform 5 continues to move towards the anvil core direction, and the signal acquisition board can collect the spring tension value f of the impact tension spring 31. i and the corresponding real-time displacement value x. i , until the impact hammer 28 is unhooked and the spring tension value becomes less than 70% of the maximum tension value, control the servo motor 2 to stop the sliding platform 5 from moving, and record the displacement value x of the impact tension spring 31 at this time. 1 , the displacement value x. 1 Subtract x. 0 equals the stretching length of the impact tension spring 31, f. i The ratio of f to (x. i -x. 0 ) is the stiffness value of the impact tension spring 31.

[0044] During the movement of the sliding platform 5, the impact hammer 28 will drive the pointer block 22 and the grating 23 to move together. The real-time scale value of the pointer block 22 relative to the scale line on the scale cover plate 21 and the stop position of the pointer block 22 after the impact hammer 28 is unhooked can be collected by the optocoupler 24 and transmitted to the signal acquisition board. Based on this, it can be judged whether the position of the pointer block 22 relative to the 100 scale line is qualified when the impact hammer 28 is unhooked.

[0045] After detecting the above three parameters, the control host controls the servo motor 2 to move the sliding platform 5 back. The guiding flange 34 will drive the pointer block 22 to move back together until the optoelectronic coupler 24 detects that the pointer block 22 is at the 1 graduation line of the scale cover plate 21 and stops running. At this time, the impact hammer 28 will hang on the hook 35. The linear motor 15 drives the guiding key 13 to move downward to an inclined state. The sliding platform 5 moves towards the anvil core under the drive of the servo motor 2. When the guiding key 13 is in an inclined state, the pointer block 22 will not move with the impact hammer 28 until the impact hammer 28 is unhooked and stops moving after hitting the impact rod. The impact rod abuts against the anvil core. Under the reaction of the anvil core, the impact hammer 28 will bounce back, so that the stepped surface of the impact hammer 28 drives the pointer block 22 to slide. If the pointer block 22 jumps up with the impact hammer 28 and the optoelectronic sensor detects the displacement value of the pointer block 22, it means that the take-off position of the impact hammer 28 is qualified, otherwise it is unqualified. The displacement value after the pointer block 22 stops moving will be recorded by the optoelectronic sensor, and the scale value corresponding to the pointer block 22 on the scale cover plate 21 is the rate value of the steel anvil.

[0046] After that, the sliding platform 5 continues to move towards the anvil core under the drive of the servo motor 2 until the pressure value collected by the pressure sensor 20 is zero, and the sliding platform 5 stops moving. At this time, the working length of the impact tension spring 31 can be manually measured. After the measurement is completed, click "Continue" on the software, and the sliding platform 5 is reset to the starting position and stops moving under the drive of the servo motor 2, and the entire detection process ends.

[0047] The full-automatic rebound tester calibrator of this embodiment can realize the automatic detection of various parameters such as the unhooking position of the impact hammer 28 of the rebound tester, the stiffness of the impact tension spring 31, the tensile length of the impact tension spring 31, the take-off position of the impact hammer 28, the rate value of the steel anvil, the working length of the impact tension spring 31, the position of the "100" graduation line of the scale, the pointer length, the pointer friction, the spherical radius of the end of the impact rod, and the indication consistency according to the steps preset by the software control program in the control host. And it can all be displayed on the liquid crystal display of the control host, and the detection report can be printed online. The manual participation is less and the work efficiency is high.

[0048] In this specification, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A fully automatic rebound hammer calibrator, characterized in that: it includes a base, a steel anvil, a detection platform and a driving device. One end of the base is provided with the steel anvil, and the other end of the base is slidably provided with the detection platform. The detection platform is of a split tailstock type. The driving device is connected to the detection platform. The detection platform is provided with a clamping mechanism and a detection mechanism. The clamping mechanism is used for clamping and fixing the movement of the rebound hammer, and the detection mechanism is used for detecting the performance parameters of the movement. The impact rod of the movement and the anvil core on the steel anvil are located on the same axis; the steel anvil includes a common steel anvil and a high-strength steel anvil. The common steel anvil and the high-strength steel anvil are arranged side by side on the base and respectively correspond to one detection platform. The detection platform includes a sliding platform and a tailstock arranged on the same linear guide rail. The clamping mechanism and the detection mechanism are arranged on the sliding platform, and tail cap locking holes of the movement are arranged side by side on the tailstock. The clamping mechanism includes a variable-rail fixture, a linear motor and a vertical guiding mechanism. The variable-rail fixture includes two vertical plates arranged in parallel and a sensor fixing seat. The vertical plates are slidably arranged on the sliding platform through a sliding seat. The sliding platform is provided with a front positioning post and a rear positioning post. The sliding seat can touch the front positioning post or the rear positioning post. A guiding key is correspondingly arranged on each vertical plate. One end of the guiding key is rotatably arranged on the vertical plate, and the other end of the guiding key is slidably connected to the vertical plate through the vertical guiding mechanism. The linear motor is connected to the vertical guiding mechanism through a lifting nut. The guiding key is used for receiving the movement. When collecting the rebound value of the rebound hammer, the linear motor controls the guiding key to be in a state not parallel to the movement, so that the pointer only follows up after the impact hammer is fired; when measuring the decoupling point of the impact hammer and the zero-point takeoff parameter, the linear motor controls the guiding key to be in a state parallel to the movement to realize data collection.

2. The fully automatic rebound hammer calibrator according to claim 1, characterized in that: the driving device includes a motor, a ball screw and a dragging nut. The main shaft of the motor is connected to the ball screw. The dragging nut is arranged on the ball screw. The dragging nut is located in the middle of the two detection platforms and is respectively fixedly connected to the two detection platforms. The motor is a servo motor. A plurality of linear guide rails are arranged on the base, and a plurality of linear sliders are arranged on the bottom surface of the detection platform. Each linear slider respectively matches with one linear guide rail.

3. The fully automatic rebound hammer calibrator according to claim 1, characterized in that: during calibration, the sliding platform and the tailstock are locked by a locking mechanism. The locking mechanism includes a strip plate and a locking bolt with a handle. One end of the strip plate is fixedly connected to the upper surface of the sliding platform. A waist-shaped hole is opened at the other end of the strip plate. The locking bolt is arranged in the waist-shaped hole and the bottom surface of the locking bolt can contact the upper surface of the tailstock.

4. The fully automatic rebound hammer calibrator according to claim 1, It is characterized in that: The vertical guiding mechanism includes a lifting plate with a sliding groove and a vertical guiding block. The sliding groove is sleeved on the vertical guiding block. One end of the lifting plate is connected to the lifting nut, and the other end of the lifting plate is rotatably connected to the guiding key through a pin shaft.

5. The full-automatic rebound tester calibrator according to claim 1, It is characterized in that: The clamping mechanism further includes a machine shell clamp. The machine shell clamp includes a front top plate, a V-shaped support, and a rear baffle. The rear baffle is arranged on the tailstock and is arranged side by side with the tail cover locking hole. A plurality of the V-shaped supports are respectively arranged on the sliding platform, and the V-shaped supports are located between the front top plate and the rear baffle.

6. The full-automatic rebound tester calibrator according to claim 1, It is characterized in that: The detection mechanism includes a scale cover plate, a pointer block, a pointer shaft, and a photoelectric sensor. The photoelectric sensor includes a grating and a plurality of optocouplers. The scale cover plate is rotatably arranged on one of the vertical plates. The scale cover plate is provided with a waist-shaped hole, the optocouplers, and the pointer shaft. The pointer block is slidably arranged on the pointer shaft, and the pointer block with scale lines is located in the waist-shaped hole. The grating is connected to the pointer block, and the grating matches the groove on the optocoupler.

7. The full-automatic rebound tester calibrator according to claim 6, It is characterized in that: The detection mechanism further includes a suspended pressure sensor. Two of the pressure sensors are symmetrically arranged on the side surface of the sensor fixing seat, and an opening and closing support is arranged on the pressure sensor.

8. The full-automatic rebound tester calibrator according to claim 7, It is characterized in that: It further includes a control host, and the pressure sensor, the photoelectric sensor, the motor, and the linear motor are respectively electrically connected to the control host.

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