Sensor system for verification of multiple mechanical testing machines

Abstract

The invention discloses a sensor system for verification of multiple mechanical testing machines, and belongs to the field of verification equipment. The sensor system comprises oppositely arranged jaws, a sensor body arranged between the two jaws, connecting plates which are in threaded insertion connection with the two ends of the sensor body and are connected with the jaws, and a correction structure used for correcting the positions of the two connecting plates. The correcting structure comprises a fixed support, a movable support movably arranged on the fixed support and a lifting plate movably inserted into the fixed support and fixedly connected with the lower end of the movable support, and a plurality of inserting rods movably inserted into the connecting plate are fixed to the ends, close to the connecting plate, of the fixed support and the movable support. The fixed support is provided with a driving piece used for driving the lifting plate to move away from the fixed support. The upper connecting plate and the lower connecting plate can be prevented from circumferentially rotating through the correcting structure, and the side edges of the upper connecting plate and the lower connecting plate are located in the same plane, so that the connecting steps of the connecting plates and the jaw are simplified, and the mounting efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of calibration equipment, and in particular to a sensor system for calibrating a multi-mechanical testing machine. Background Art

[0002] In the mechanical testing industry, material tensile testing machines are indispensable and important equipment. Among them, single-space tensile testing machines are widely popular due to their simple structure, low cost and convenient operation, and have become the main model of tensile testing machines. However, in order to ensure the accuracy of the test data of these tensile testing machines, regular verification or calibration is an essential link.

[0003] The traditional single-space tensile testing machine calibration method has many inconveniences. During the calibration process, the jaws, jaw pressure plate and slide plate need to be removed to expose the base of the testing machine, and then a deflector with a weight that may range from 60 kg to more than 400 kg needs to be installed. This deflector needs to be lifted to a height of about 1 meter from the ground and embedded in the base of the tensile testing machine. Next, the compressive force sensor is placed between the two pressure blocks of the deflector to convert the tensile force of the testing machine into the force of the pressure sensor for force value calibration. After the calibration is completed, the deflector needs to be removed and the slide plate, jaws and jaw pressure plate need to be reinstalled. The entire calibration process is complicated and cumbersome, and usually takes 4 people half a day to complete. It is not only time-consuming and labor-intensive, but also poses certain safety hazards.

[0004] In order to improve this situation, Chinese utility model patent CN220556407U proposed a new scheme for the calibration mechanism of a tensile testing machine. The scheme aims to simplify the calibration process, improve the accuracy of the calibration results, and simulate the state of the tensile specimen of the testing machine. The calibration mechanism uses the same jaws and clamps as those used in tension, as well as structural parts, to maximize the same stiffness of the equipment as during the test, thereby improving the accuracy of the calibration. However, the scheme also encountered some problems during implementation. Specifically, after the connecting plate is connected to the sensor body by threads, due to the square shape of the connecting plate, its upper and lower sides are prone to deflection, causing them to not be in the same vertical plane. As a result, when the connecting plate is connected to the jaws, one of the connecting plates needs to be fine-tuned circumferentially to ensure that the connecting plate corresponds to the mounting groove on the jaws, so that the connecting plate can be smoothly plugged into the jaws, which increases the complexity of the operation.

[0005] Therefore, the present application provides a sensor system for calibrating multiple mechanical testing machines to solve the above problems. Summary of the invention

[0006] The present application provides a sensor system for calibrating a multi-mechanical testing machine, which aims to solve the problem that after the existing connecting plate and the sensor body are connected by threads, the upper and lower sides of the connecting plate are easily skewed due to the square shape of the connecting plate, resulting in that they may not be in the same vertical plane. As a result, when the connecting plate is connected to the jaws, one of the connecting plates needs to be fine-tuned circumferentially to ensure that the connecting plate corresponds to the mounting groove on the jaws, so that the connecting plate can be smoothly plugged into the jaws, which increases the complexity of the operation.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a sensor system for calibrating a multi-mechanical testing machine, comprising jaws arranged opposite to each other, a sensor body arranged between the two jaws, a connecting plate threadedly plugged at both ends of the sensor body and connected to the jaws, and a correction structure for correcting the positions of the two connecting plates; in order to facilitate ensuring that the planes of the two connecting plates are located in the same plane: the correction structure comprises a fixed bracket, a movable bracket movably arranged on the fixed bracket, and a lifting plate movably plugged in the fixed bracket and fixedly connected to the lower end of the movable bracket, the fixed bracket and the movable bracket are fixed with a plurality of plug rods movably plugged with the connecting plate at one end close to the connecting plate, and a driving member for driving the lifting plate to move away from the fixed bracket is provided on the fixed bracket. Before the connecting plate is connected to the sensor body, the position of the two connecting plates is corrected by the correction structure. During the correction process, the lifting plate is driven to move by the driving member, thereby adjusting the height of the movable bracket so that the two connecting plates remain horizontal and are located in the same plane. Then, the sensor body is placed between the two connecting plates, and the threaded connection with the connecting plate is achieved by rotating the sensor body. Since the connecting plate is limited by the correction structure, there is no need to make axial rotation adjustments during the connection process. Finally, the connected sensor system is installed on the jaws and the calibration work can be carried out.

[0008] Preferably, in order to facilitate the connection between the sensor body and the connecting plate: a screw is fixedly connected to one end of the connecting plate close to the sensor body, and a threaded sleeve is fixedly connected to one end of the sensor body close to the connecting plate, which is threadedly sleeved with the screw. By arranging the screw and the threaded sleeve on the connecting plate and the sensor body respectively, a threaded connection between the two is achieved, which is not only stable and reliable, but also convenient for installation and disassembly, thereby improving work efficiency.

[0009] Preferably, for the installation of the connecting plate: protrusions are fixedly provided on both sides of the end of the connecting plate away from the sensor body, and the jaws are provided with slots for the protrusions to engage. Through the cooperation between the protrusions and the slots, a quick and stable connection between the connecting plate and the jaws is achieved, which greatly simplifies the installation steps and improves work efficiency.

[0010] Preferably, in order to facilitate the connection between the plug rod and the connecting plate: the connecting plate is provided with a socket for the plug rod to be inserted. The design of the socket makes the connection between the plug rod and the connecting plate extremely simple, without the need for complicated adjustment or fixing steps, greatly simplifying the installation process. Through the cooperation of the socket and the plug rod, a quick and stable connection between the connecting plate and the correction structure is achieved, thereby improving the installation efficiency.

[0011] Preferably, the driving member comprises a cylinder fixedly installed in the fixed bracket, and the output end of the cylinder is fixedly connected to the lower end of the movable bracket. Through the arrangement of the driving member, it is convenient to install the sensor body between the two connecting plates.

[0012] Preferably, in order to prevent the movable bracket from bending the lifting plate under the gravity of the connecting plate: a vertical groove is provided at one end of the fixed bracket away from the plug rod, a slider fixedly connected to the lifting plate is movably arranged in the vertical groove, and an arc-shaped plate fixedly connected to the movable bracket is fixedly connected at one end of the slider away from the fixed bracket. The arc-shaped plate and the lifting plate are combined to form two reinforcing ribs, which effectively enhances the carrying capacity of the lifting plate and prevents it from bending under the gravity of the connecting plate.

[0013] Preferably, in order to ensure the stability of the position of the movable bracket after the driving member is lifted or lowered: the fixed bracket is provided with a locking structure for locking the position of the lifting plate, the locking structure includes a fixed sleeve fixedly mounted on the fixed bracket, a locking rod inserted in the fixed sleeve and extending into the fixed bracket, a limit plate arranged in the fixed sleeve and fixedly sleeved on the locking rod, a fastening spring sleeved on the locking rod corresponding to the fixed sleeve and between the end of the limit plate away from the fixed bracket, and a locking groove for the locking rod to be inserted. The locking structure can be used to conveniently lock the position of the adjusted movable bracket, so as to avoid the phenomenon of the movable bracket falling when the cylinder pressure is reduced, thereby improving the stability and reliability of the entire system.

[0014] Preferably, in order to facilitate the locking rod to be moved out of the locking groove and release the restriction on the lifting plate: a pull ring is fixedly connected to one end of the locking rod away from the fixing bracket, and the locking rod is conveniently driven to move through the pull ring.

[0015] The present application can prevent the upper and lower connecting plates from rotating circumferentially through the correction structure, ensuring that the sides of the upper and lower connecting plates are located in the same plane, thereby simplifying the connection steps between the connecting plates and the jaws and improving installation efficiency. The design of the correction structure eliminates the need for axial rotation adjustment of the connecting plates during the connection process, avoiding errors and safety hazards caused by improper adjustment.

[0016] The present application uses a locking structure to conveniently lock the position of the adjusted movable bracket, thereby preventing the movable bracket from falling when the cylinder pressure decreases, thereby improving the stability and reliability of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a sensor system for calibrating a multi-mechanical testing machine; Figure 2 for Figure 2 Three-dimensional diagram of the middle connecting plate, sensor body and correction structure; Figure 3 for Figure 2 Schematic diagram of the other side of the structure; Figure 4 is a structural schematic diagram of the correction structure; Figure 5 is a structural schematic diagram of the connecting plate; Figure 6 It is a structural schematic diagram of the connection between the sensor body and the threaded sleeve; Figure 7 It is a structural schematic diagram of the connection between the locking structure and the lifting plate.

[0018] In the figure: 1. Jaws; 11. Slot; 2. Sensor body; 21. Threaded sleeve; 3. Connecting plate; 31. Screw; 32. Protrusion; 33. Socket; 4. Correction structure; 41. Fixed bracket; 411. Vertical groove; 412. Slider; 413. Arc plate; 42. Movable bracket; 43. Lifting plate; 44. Insert rod; 45. Driving member; 5. Locking structure; 51. Fixed sleeve; 52. Locking rod; 521. Pull ring; 53. Limiting plate; 54. Fastening spring; 55. Locking groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] This embodiment provides a sensor system for calibrating a multi-mechanical testing machine, such as Figure 1-7As shown, the sensor system includes jaws 1 arranged opposite to each other, a sensor body 2 arranged between the two jaws 1, a connecting plate 3 threadedly plugged into the two ends of the sensor body 2 and connected to the jaws 1, and a correction structure 4 for correcting the positions of the two connecting plates 3; in order to ensure that the planes of the two connecting plates 3 are located in the same plane: the correction structure 4 includes a fixed bracket 41, a movable bracket 42 movably arranged on the fixed bracket 41, and a lifting plate 43 movably plugged into the fixed bracket 41 and fixedly connected to the lower end of the movable bracket 42, a plurality of plug rods 44 movably plugged into the connecting plate 3 are fixed at one end of the fixed bracket 41 and the movable bracket 42 close to the connecting plate 3, and a driving member 45 for driving the lifting plate 43 to move away from the fixed bracket 41 is arranged on the fixed bracket 41. The correction structure 4 can prevent the upper and lower connecting plates 3 from rotating in the circumferential direction, ensuring that the sides of the upper and lower connecting plates 3 are located in the same plane, thereby simplifying the connection steps of the connecting plate 3 and the jaws 1 and improving the installation efficiency. The design of the correction structure 4 makes it unnecessary to perform axial rotation adjustment on the connecting plate 3 during the connection process, thus avoiding errors and safety hazards caused by improper adjustment. Among them, the threaded connection of the sensor body 2 and the two connecting plates 3 rotates in opposite directions, that is, when the sensor body 2 rotates clockwise, the two connecting plates 3 move toward the sensor body 2, and when the sensor body 2 rotates counterclockwise, the two connecting plates 3 move away from the sensor body 2. Before the connecting plate 3 is connected to the sensor body 2, the position of the two connecting plates 3 is corrected by the correction structure 4. During the correction process, the driving member 45 is used to drive the lifting plate 43 to move, thereby adjusting the height of the movable bracket 42 so that the two connecting plates 3 remain horizontal and are located in the same plane. Then, the sensor body 2 is placed between the two connecting plates 3, and the threaded connection with the connecting plate 3 is achieved by rotating the sensor body 2. Since the connecting plate 3 is limited by the correction structure 4, there is no need to perform axial rotation adjustment during the connection process. Finally, the connected sensor system is installed on the jaws 1 for calibration.Specifically, when the connecting plate is connected to the sensor body 2, one of the connecting plates 3 is first placed on the platform, and then the correction structure 4 is installed on the connecting plate 3, so that the plug rod 44 on the fixed bracket 41 is plugged into the connecting plate 3, and then the other connecting plate 3 is installed on the movable bracket 42, so that the plug rod 44 on the movable bracket 42 is plugged into the connecting plate 3; then the lifting plate 43 is driven by the driving member 45 to move to the outside of the fixed bracket 41, so that the movable bracket 42 moves to the top of the fixed bracket 41, so that the two connecting plates 3 are separated, until the distance between the two connecting plates 3 is greater than the sensor body 2, and then the sensor is placed between the two connecting plates 3, so that the sensor The bottom of the body 2 contacts the top threaded connection of the connecting plate 3 located below, and then the limit of the driving member 45 on the movable bracket 42 is released, so that the movable bracket 42 moves downward under the gravity of the connecting plate 3 until the connecting plate 3 contacts the threaded connection of the sensor body 2. At this time, since the two connecting plates 3 are position-limited by the correction structure 4, when the sensor body 2 is rotated clockwise, the connecting plate 3 is firmly connected to the sensor body 2, and then the two connecting plates 3 can be directly clamped on the upper and lower jaws 1 respectively. In the process of connecting the connecting plate 3 with the jaw 1, it is not necessary to adjust the axial rotation of the connecting plate 3 again, which simplifies the connection steps of the connecting plate 3 and the jaw 1 and improves the installation efficiency. The correction structure 4 can prevent the upper and lower connecting plates 3 from rotating circumferentially, ensure that the sides of the upper and lower connecting plates 3 are located in the same plane, and facilitate the direct installation of the connecting plates 3 at both ends of the fixed sensor body 2 on the jaw 1, avoiding secondary circumferential position adjustment of the jaw 1, simplifying the connection steps of the connecting plate 3 and the jaw 1, and improving the installation efficiency.

[0021] Specifically, in order to facilitate the connection between the sensor body 2 and the connecting plate 3: the end of the connecting plate 3 close to the sensor body 2 is fixedly connected with a screw 31, and the end of the sensor body 2 close to the connecting plate 3 is fixedly connected with a threaded sleeve 21 threadedly sleeved with the screw 31. By respectively arranging the screw 31 and the threaded sleeve 21 on the connecting plate 3 and the sensor body 2, a threaded connection between the two is achieved, which not only makes the connection firm and reliable, but also facilitates installation and disassembly, thereby improving work efficiency. By rotating the sensor body 2 clockwise, the threaded sleeve 21 is threadedly connected with the screw 31, thereby fastening the connecting plate 3 and the sensor body 2 together. During the connection process, the insertion rod 44 of the correction structure 4 will be inserted into the corresponding hole of the connecting plate 3 to play a role of fixing and supporting. When disassembly is required, the sensor body 2 only needs to be rotated counterclockwise to loosen the connection.

[0022] For the installation of the connecting plate 3: protrusions 32 are fixedly provided on both sides of the end of the connecting plate 3 away from the sensor body 2, and a slot 11 for the protrusion 32 to be engaged is provided on the jaws 1. Through the cooperation between the protrusion 32 and the slot 11, the connecting plate 3 and the jaws 1 are quickly and firmly connected, which greatly simplifies the installation steps and improves work efficiency. The protrusion 32 is firmly engaged in the slot 11, which effectively prevents the connecting plate 3 from shaking or falling off when subjected to force, and improves the stability and accuracy of the entire sensor system. The design of the protrusion 32 not only facilitates the installation of the connecting plate 3, but also increases its structural strength, so that it can better withstand the load in the mechanical test.

[0023] Specifically, in order to facilitate the connection between the plug rod 44 and the connecting plate 3: a socket 33 for the plug rod 44 to be plugged in is provided on the connecting plate 3. The design of the socket 33 makes the connection between the plug rod 44 and the connecting plate 3 extremely simple, without the need for complicated adjustment or fixing steps, which greatly simplifies the installation process. Through the cooperation between the socket 33 and the plug rod 44, a quick and stable connection between the connecting plate 3 and the correction structure 4 is achieved, thereby improving the installation efficiency. The close cooperation between the socket 33 and the plug rod 44 ensures that the connecting plate 3 is not prone to shaking or falling off during the installation process, thereby enhancing the structural stability of the entire sensor system. The plug rod 44 in the correction structure 4 can be easily inserted into the socket 33 on the connecting plate 3 to achieve pre-positioning installation, which provides great convenience for subsequent installation work.

[0024] Specifically, the driving member 45 includes a cylinder fixedly installed in the fixed bracket 41, and the output end of the cylinder is fixedly connected to the lower end of the movable bracket 42. Through the setting of the driving member 45, it is convenient to install the sensor body 2 between the two connecting plates 3. By introducing gas into the cylinder, the output end of the cylinder can drive the movable bracket 42 to move away from the fixed bracket 41 through the lifting plate 43. At this time, the sensor body 2 can be placed between the two connecting plates 3, and then when the gas is stopped from being input into the cylinder and the exhaust hole of the cylinder is opened, the gas inside the cylinder is discharged, so that the movable bracket 42 moves towards the fixed bracket 41 under the self-weight of the connecting plate 3, and then it is convenient to control the lifting and lowering of the movable bracket 42, and to facilitate the connection between the connecting plate 3 and the sensor body 2.

[0025] In order to prevent the movable bracket 42 from bending the lifting plate 43 under the gravity of the connecting plate 3: a vertical groove 411 is provided at the end of the fixed bracket 41 away from the insertion rod 44, and a slider 412 fixedly connected to the lifting plate 43 is movably arranged in the vertical groove 411, and an arc plate 413 fixedly connected to the movable bracket 42 is fixedly connected at the end of the slider 412 away from the fixed bracket 41. The arc plate 413 and the lifting plate 43 are combined to form two reinforcing ribs, which effectively enhances the carrying capacity of the lifting plate 43 and prevents it from bending under the gravity of the connecting plate 3. The coordination of the arc plate 413 and the lifting plate 43 can ensure that the movable bracket 42 can only move vertically up and down, avoiding its lateral shaking or deviation during the lifting process.

[0026] In order to ensure the stability of the position of the movable bracket 42 after the driving member 45 is lifted and lowered: a locking structure 5 for locking the position of the lifting plate 43 is provided on the fixed bracket 41, and the locking structure 5 includes a fixed sleeve 51 fixedly mounted on the fixed bracket 41, a locking rod 52 inserted in the fixed sleeve 51 and extending into the fixed bracket 41, a limit plate 53 arranged in the fixed sleeve 51 and fixedly sleeved on the locking rod 52, a fastening spring 54 sleeved on the locking rod 52 corresponding to the fixed sleeve 51 and the end of the limit plate 53 away from the fixed bracket 41, and a locking groove 55 for the locking rod 52 to be inserted is provided on the lifting plate 43. The locking structure 5 is used to conveniently lock the position of the movable bracket 42 after adjustment, so as to avoid the phenomenon of the movable bracket 42 falling when the cylinder pressure is reduced, thereby improving the stability and reliability of the entire system. The locking rod 52 is initially in a state of being in conflict with the side wall of the lifting plate 43, and the tightening spring 54 is initially in a state of being squeezed and stressed and storing force. When the driving member 45 drives the lifting plate 43 to rise, when the locking groove 55 on the lifting plate 43 corresponds to the locking rod 52, the locking rod 52 is inserted into the locking groove 55 under the elastic force of the spring, completing the position locking of the lifting plate 43 and ensuring the position stability of the movable bracket 42. When the sensor body 2 is placed between the two connecting plates 3 and the sensor body 2 needs to be connected to the connecting plate 3, the restriction of the cylinder on the movable bracket 42 is released, and the locking rod 52 is pulled at the same time to move the locking rod 52 to the outside of the locking groove 55. During the movement of the locking rod 52, the limit plate 53 is driven to squeeze the fastening spring 54 to shrink and accumulate force. When the locking rod 52 disengages from the locking groove 55, the lifting plate 43 moves downward under the gravity of the movable bracket 42 and the connecting plate 3, and then the pulling force on the locking rod 52 is released. Under the action of the spring, the locking rod 52 always keeps in contact with the lifting plate 43, which is convenient for locking the lifting plate 43 in position next time.

[0027] In order to facilitate the locking rod 52 to be moved out of the locking groove 55 and release the restriction on the lifting plate 43, a pull ring 521 is fixedly connected to one end of the locking rod 52 away from the fixing bracket 41. The pull ring 521 facilitates the locking rod 52 to move.

[0028] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical solution and concept of the present application within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A sensor system for calibrating a multi-mechanical testing machine, comprising jaws (1) arranged opposite to each other, a sensor body (2) arranged between the two jaws (1), connecting plates (3) threadedly plugged into both ends of the sensor body (2) and connected to the jaws (1), and a correction structure (4) for correcting the positions of the two connecting plates (3); Features: The correction structure (4) comprises a fixed bracket (41), a movable bracket (42) movably arranged on the fixed bracket (41), and a lifting plate (43) movably inserted into the fixed bracket (41) and fixedly connected to the lower end of the movable bracket (42); a plurality of plug rods (44) movably inserted into the connecting plate (3) are fixed at one end of the fixed bracket (41) and the movable bracket (42) close to the connecting plate (3); and a driving member (45) for driving the lifting plate (43) to move away from the fixed bracket (41) is provided on the fixed bracket (41).

2. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: One end of the connection plate (3) close to the sensor body (2) is fixedly connected to a screw rod (31), and one end of the sensor body (2) close to the connection plate (3) is fixedly connected to a threaded sleeve (21) threadably sleeved with the screw rod (31).

3. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: Protrusions (32) are fixedly provided on both sides of one end of the connecting plate (3) away from the sensor body (2), and a clamping groove (11) for clamping the protrusion (32) is provided on the jaw (1).

4. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: The connecting plate (3) is provided with a plug hole (33) for plugging the plug rod (44).

5. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: The driving member (45) comprises a cylinder fixedly mounted in the fixed bracket (41), and the output end of the cylinder is fixedly connected to the lower end of the movable bracket (42).

6. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: A vertical groove (411) is formed at one end of the fixed bracket (41) away from the insertion rod (44), a sliding block (412) fixedly connected to the lifting plate (43) is movably arranged in the vertical groove (411), and an arc-shaped plate (413) fixedly connected to the movable bracket (42) is fixedly connected at one end of the sliding block (412) away from the fixed bracket (41).

7. The sensor system for calibrating a multi-mechanical testing machine according to claim 1, characterized in that: The fixed bracket (41) is provided with a locking structure (5) for locking the position of the lifting plate (43), the locking structure (5) comprising a fixed sleeve (51) fixedly mounted on the fixed bracket (41), a locking rod (52) inserted into the fixed sleeve (51) and extending into the fixed bracket (41), a limiting plate (53) arranged in the fixed sleeve (51) and fixedly sleeved on the locking rod (52), a fastening spring (54) sleeved on the locking rod (52) corresponding to the fixed sleeve (51) and between an end of the limiting plate (53) away from the fixed bracket (41), and a locking groove (55) for the locking rod (52) to be inserted into is provided on the lifting plate (43).

8. The sensor system for calibrating a multi-mechanical testing machine according to claim 7, characterized in that: One end of the locking rod (52) away from the fixing bracket (41) is fixedly connected to a pull ring (521).

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