Mechanical injury model for work injury simulation teaching

Abstract

The application relates to the technical field of teaching models, and discloses a mechanical injury model for work injury simulation teaching, which comprises a base, a vertical plate is fixedly installed at the top of the base, a motor one is fixedly installed at the top of the front side of the vertical plate, a stainless steel three-prong base is fixedly installed at the output shaft end of the motor one, assembling grooves are formed in the three side faces of the stainless steel three-prong base, and neodymium iron boron magnet columns are slidingly installed in the three assembling grooves. The application has the following advantages and effects: the injury and dangerous state caused by the hand of a person being involved in a belt can be simulated, the injury and dangerous state caused by the hand of a person being clamped can be simulated, the injury and dangerous state caused by the hand of a person being impacted can be simulated, the work injury mold with the belt being involved, the punch press hand clamping work injury mold and the impact feeling work injury mold can be conveniently disassembled and assembled, and the operation is simple and convenient.

Description

Technical Field

[0001] This application relates to the field of teaching model technology, and in particular to a mechanical injury model for simulating workplace injuries in teaching. Background Technology

[0002] In modern industrial production, various types of machinery and equipment are widely used in machining, manufacturing, and other industries. Work scenarios involving belt drives, stamping, and material handling present risks of mechanical injuries such as belt entanglement, hand trapping in stamping machines, and impacts. Statistics show that mechanical injuries account for a significant proportion of workplace accidents, seriously threatening the lives and health of workers. Therefore, improving workers' safety awareness and emergency response capabilities is of paramount importance.

[0003] Traditional mechanical injury simulation teaching often uses theoretical explanations and video demonstrations. However, because the content of traditional theoretical teaching and video demonstrations is abstract, students find it difficult to intuitively understand the dangerous characteristics of mechanical injuries and cannot personally experience the accident process. In existing technologies, although some mechanical injury simulation teaching uses physical models, their functions are limited, and they can only simulate a single type of mechanical injury scenario, which is difficult to effectively improve students' ability to cope with actual work injury hazards and cannot meet diverse teaching needs. Moreover, the simulation molds are difficult to change and the operation is cumbersome and time-consuming.

[0004] Therefore, we propose a mechanical injury model for workplace injury simulation teaching to solve the above problems. Utility Model Content

[0005] In order to address the problems in the prior art where some mechanical injury simulation teaching uses physical models, but these models are limited in function and can only simulate a single type of mechanical injury scenario, making it difficult to effectively improve students' ability to cope with actual work injury hazards and failing to meet diverse teaching needs; and where it is difficult to change the simulation molds and the operation is cumbersome and time-consuming, this application provides a mechanical injury model for work injury simulation teaching.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a mechanical injury model for simulating workplace injuries, comprising a base, a vertical plate fixedly installed on the top of the base, a motor fixedly installed on the front top of the vertical plate, a stainless steel triangular seat fixedly installed on the output shaft end of the motor, assembly slots provided on three sides of the stainless steel triangular seat, neodymium iron boron magnets slidably installed in the three assembly slots, the neodymium iron boron magnets magnetically attracted and fixed to the inner wall of the assembly slots, external threaded connectors fixedly installed on the ends of the three neodymium iron boron magnets away from the stainless steel triangular seat, internal threaded swivels threaded on the three external threaded connectors, internal threaded anti-detachment rings fixedly installed on the side of the three internal threaded swivels near the stainless steel triangular seat, external threaded locking rings fixedly installed on the three sides of the stainless steel triangular seat, the three internal threaded anti-detachment rings threadedly fitted onto the corresponding external threaded locking rings, and simulation belt entanglement injury molds, simulation press clamping injury molds, and simulation impact injury molds respectively provided at one end of the three external threaded connectors.

[0007] By adopting the above technical solution, the output shaft of motor one drives the stainless steel triangular seat to rotate, which can adjust the position of the mold simulating belt entanglement injury, the mold simulating press clamping injury, and the mold simulating impact injury. It can quickly switch between the simulation teaching of three common mechanical injury scenarios: belt entanglement, press clamping injury, and object impact. The neodymium iron boron magnet column is fixed by magnetic adsorption with the assembly groove, and with the threaded connection of the internal thread anti-detachment ring and the external thread locking ring, it can realize the convenient assembly and disassembly of the three molds: the mold simulating belt entanglement injury, the mold simulating press clamping injury, and the mold simulating impact injury.

[0008] Optionally, the simulated belt entanglement injury mold includes a support plate, two rotating shafts, two pulleys, a belt, and a second motor. The support plate is fixed to one end of the corresponding external threaded connector. Both rotating shafts are rotatably mounted on the front side wall of the support plate. The two pulleys are respectively fixedly sleeved on the corresponding rotating shafts. The belt is wound around the two pulleys. The second motor is fixedly mounted on the rear side wall of the support plate. The output shaft end of the second motor is fixedly connected to the rear end of one of the rotating shafts.

[0009] By adopting the above technical solution, it is possible to simulate and recreate the injury and danger caused by a person's hand getting caught in a belt.

[0010] Optionally, the simulated stamping press clamping mold includes a U-shaped plate, a hydraulic cylinder, a pressure sensor, and a pressure plate. The U-shaped plate is fixed to one end of the corresponding external threaded connector, the hydraulic cylinder is fixedly installed on the top of the U-shaped plate, the output shaft end of the hydraulic cylinder extends into the U-shaped plate, the pressure sensor is fixedly installed on the output shaft end of the hydraulic cylinder, and the pressure plate is fixedly installed on the bottom of the pressure sensor.

[0011] By adopting the above technical solution, it is possible to simulate and recreate the injury and danger caused when a person's hand is trapped.

[0012] Optionally, the simulated impact injury mold includes a placement platform, a hydraulic damper, an impact head, and a stainless steel plate. The placement platform is fixed to one end of the corresponding external threaded connector. A groove is provided on the side of the placement platform away from the external threaded connector. The hydraulic damper is fixedly installed on the bottom inner wall of the groove. The impact head is fixedly installed on the output shaft end of the hydraulic damper. The stainless steel plate is fixedly installed on the side of the placement platform away from the external threaded connector.

[0013] By adopting the above technical solution, it is possible to simulate and recreate the injury and dangerous state caused when a person's hand is subjected to impact.

[0014] Optionally, the cross-sectional dimension of the stainless steel plate is larger than the cross-sectional dimension of the groove.

[0015] By adopting the above technical solution, it is ensured that the stainless steel plate completely covers and seals the groove.

[0016] Optionally, the top of the base is provided with a simulated arm clamping and adjusting mechanism. The simulated arm clamping and adjusting mechanism is used to clamp and fix the simulated arm and adjust the position of the simulated arm. The simulated arm clamping and adjusting mechanism includes an adjusting component and a clamping component. The adjusting component includes a shaft seat, a vertical shaft, connecting arm one, connecting arm two, connecting arm three, two motors three, motor four, a main gear and a secondary gear. The shaft seat and motor four are fixedly installed on the top of the base. The vertical shaft is rotatably installed on the top of the shaft seat. Connecting arm one is fixedly installed on the top of the vertical shaft. Connecting arm two is rotatably installed on the top of connecting arm one through hinge shaft one. Connecting arm three is rotatably installed on the top of connecting arm two through hinge shaft two. The two motors three are respectively fixedly installed on the front sidewalls of connecting arm one and connecting arm two. The output shaft ends of the two motors three are respectively fixedly connected to the front ends of hinge shaft one and hinge shaft two. The main gear is fixedly installed on the output shaft end of motor four. The secondary gear is fixedly sleeved on the vertical shaft. The main gear and the secondary gear mesh.

[0017] By adopting the above technical solutions, the position of the clamped and fixed simulated arm can be adjusted from multiple angles and directions to simulate the risk of work-related injuries under different working postures, enhance the interactivity and pertinence of teaching, make the scenario of mechanical injury to the simulated arm more realistic, help students understand the mechanism of danger more deeply, and master the correct safety operation procedures.

[0018] Optionally, the top end of the vertical shaft is provided with a hinge groove, the hinge shaft is rotatably installed in the hinge groove, the bottom end of the connecting arm is fixedly sleeved on the hinge shaft, the top end of the connecting arm is provided with a hinge groove, the hinge shaft is rotatably installed in the hinge groove, and one end of the connecting arm is fixedly sleeved on the hinge shaft.

[0019] By adopting the above technical solution, the rotation of connecting arm two and connecting arm three can be made more stable and smooth.

[0020] Optionally, the clamping assembly includes a clamping seat, three electric telescopic rods, and three clamping plates. The clamping seat is fixedly installed at the end of the connecting arm three away from the connecting arm two. A clamping groove is opened on the side of the clamping seat away from the connecting arm three. The three electric telescopic rods are all fixedly installed on the outer wall of the clamping seat and are distributed in a ring at equal intervals. The output shaft ends of the three electric telescopic rods all extend into the clamping groove. The three clamping plates are respectively fixedly installed at the output shaft ends of the corresponding electric telescopic rods.

[0021] By adopting the above technical solution, one end of the simulated arm can be clamped and fixed in the clamping slot, eliminating the need for teachers to hold the simulated arm for workplace injury simulation teaching.

[0022] Optionally, a U-shaped cover is fixedly installed on the top of the base. The shaft seat, vertical shaft, motor four, main gear and auxiliary gear are all located inside the U-shaped cover. An avoidance hole is opened on the top of the U-shaped cover, and the top end of the connecting arm one passes through the avoidance hole.

[0023] By adopting the above technical solution, the U-shaped cover can isolate the shaft seat, vertical shaft, motor, main gear and auxiliary gear, and the clearance hole can ensure the smooth rotation of the connecting arm.

[0024] This application includes at least one of the following beneficial technical effects:

[0025] This application utilizes the output shaft of motor one to drive the stainless steel triangular seat to rotate, which can adjust the position of the simulated belt entanglement injury mold, the simulated press clamping injury mold, and the simulated impact injury mold. It can quickly switch between simulated teaching of three common mechanical injury scenarios: belt entanglement, press clamping, and object impact. That is, it can simulate and reproduce the injury and danger caused by a person's hand being caught in a belt, the injury and danger caused by a person's hand being clamped, and the injury and danger caused by a person's hand being impacted.

[0026] This application utilizes a simulated arm clamping and adjusting mechanism to securely clamp and fix the simulated arm, eliminating the need for teachers to hold the simulated arm during workplace injury simulation teaching. It also allows for multi-angle and multi-directional adjustment of the clamped and fixed simulated arm's position, simulating workplace injury risks under different working postures. This enhances the interactivity and relevance of teaching, making the scenarios of mechanical injury to the simulated arm more realistic, helping students to understand the mechanism of danger more deeply, and master the correct safety operating procedures.

[0027] This application utilizes the magnetic attraction and fixation of neodymium iron boron magnets and assembly slots, and with the threaded connection of internal thread anti-detachment ring and external thread locking ring, it can realize convenient assembly and disassembly of molds simulating belt entanglement injury, molds simulating press clamping injury, and molds simulating impact injury. Attached Figure Description

[0028] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0029] Figure 2 This is a front view sectional view of the three-dimensional structure of the stainless steel triangular base.

[0030] Figure 3 This is a three-dimensional structural diagram of an external threaded connector.

[0031] Figure 4 This is a three-dimensional structural diagram simulating a belt getting caught in a work injury mold.

[0032] Figure 5 This is a three-dimensional structural diagram simulating the manual damage of a stamping press mold.

[0033] Figure 6 This is a three-dimensional structural diagram of a mold that simulates the impact and damage of an industrial product.

[0034] Figure 7 This is a three-dimensional structural diagram of the simulated arm clamping and adjusting mechanism.

[0035] In the diagram: 1. Base; 2. Vertical plate; 3. Motor 1; 4. Stainless steel triangular base; 5. Assembly slot; 6. Neodymium iron boron magnet column; 7. External thread connector; 8. Internal thread swivel; 9. Internal thread anti-detachment ring; 10. External thread locking ring; 11. Simulated belt entanglement injury mold; 111. Support plate; 112. Shaft; 113. Pulley; 114. Belt; 115. Motor 2; 12. Simulated stamping press clamping injury mold; 121. U-shaped plate; 122. Hydraulic cylinder; 123. Pressure sensor; 124. Pressure... 13. Simulated impact injury mold; 131. Placement platform; 132. Groove; 133. Hydraulic damper; 134. Impact head; 135. Stainless steel plate; 14. Simulated arm clamping adjustment mechanism; 141. Shaft seat; 142. Vertical shaft; 143. Connecting arm one; 144. Connecting arm two; 145. Connecting arm three; 146. Motor three; 147. Clamping seat; 148. Electric telescopic rod; 149. Clamping plate; 1410. Motor four; 1411. Main gear; 1412. Secondary gear; 15. U-shaped cover. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0037] This application discloses a mechanical injury model for workplace injury simulation teaching, including a base 1. A vertical plate 2 is fixedly installed on the top of the base 1. A motor 3 is fixedly installed on the top front side of the vertical plate 2. A stainless steel triangular seat 4 is fixedly installed on the output shaft end of the motor 3. Assembly grooves 5 are provided on three sides of the stainless steel triangular seat 4. Neodymium iron boron magnets 6 are slidably installed in each of the three assembly grooves 5. The neodymium iron boron magnets 6 are magnetically attracted and fixed to the inner wall of the assembly grooves 5. External threaded connectors 7 are fixedly installed on the ends of the three neodymium iron boron magnets 6 away from the stainless steel triangular seat 4. Internal threaded swivels 8 are threaded onto each of the three external threaded connectors 7. Internal threaded anti-detachment rings 9 are fixedly installed on the side of each of the three internal threaded swivels 8 near the stainless steel triangular seat 4. External threaded locking rings 10 are fixedly installed on three sides of the stainless steel triangular seat 4. The three internal threaded anti-detachment rings 9 are respectively threaded onto the corresponding external threaded locking rings 10. One end of the threaded connector 7 is respectively equipped with a simulated belt entanglement injury mold 11, a simulated press clamping injury mold 12, and a simulated impact injury mold 13. The output shaft of motor 3 drives the stainless steel triangular seat 4 to rotate with the simulated belt entanglement injury mold 11, the simulated press clamping injury mold 12, and the simulated impact injury mold 13. This allows for quick switching between simulated teaching of three common mechanical injury scenarios: belt entanglement, press clamping injury, and object impact. This enables students to learn about various work injury risks more systematically, greatly improving teaching efficiency and knowledge coverage. By using neodymium iron boron magnets 6 and the assembly groove 5 for magnetic adsorption and fixation, and in conjunction with the threaded connection of the internal thread anti-detachment ring 9 and the external thread locking ring 10, the three molds—simulated belt entanglement injury mold 11, simulated press clamping injury mold 12, and simulated impact injury mold 13—can be easily disassembled and assembled, facilitating their use, replacement, and maintenance.

[0038] In this embodiment, the simulated belt entanglement injury mold 11 includes a support plate 111, two rotating shafts 112, two pulleys 113, a belt 114, and a second motor 115. The support plate 111 is fixed to one end of the corresponding external threaded connector 7. The two rotating shafts 112 are rotatably mounted on the front side wall of the support plate 111. The two pulleys 113 are respectively fixedly sleeved on the corresponding rotating shafts 112. The belt 114 is wound around the two pulleys 113. The second motor 115 is fixedly mounted on the rear side wall of the support plate 111. The output shaft end of the second motor 115 is fixedly connected to the rear end of one of the rotating shafts 112. Using the second motor 115 as a power source, the rotation of the two pulleys 113 and the belt 114 can be controlled, which can simulate and restore the injury and danger caused by a person's hand being caught in the belt 114, allowing students to have a more realistic operating experience and improve their safety awareness and emergency response capabilities.

[0039] In this embodiment, the simulated stamping press clamping injury mold 12 includes a U-shaped plate 121, a hydraulic cylinder 122, a pressure sensor 123, and a pressure plate 124. The U-shaped plate 121 is fixed to one end of the corresponding external threaded connector 7. The hydraulic cylinder 122 is fixedly installed on the top of the U-shaped plate 121, and the output shaft end of the hydraulic cylinder 122 extends into the U-shaped plate 121. The pressure sensor 123 is fixedly installed on the output shaft end of the hydraulic cylinder 122, and the pressure plate 124 is fixedly installed on the bottom of the pressure sensor 123. Utilizing the telescopic feature of the hydraulic cylinder 122, the linear movement of the pressure sensor 123 and the pressure plate 124 can be controlled. By applying a certain pressure to the simulated arm using the pressure plate 124, the injury and dangerous state caused when a person's hand is clamped can be simulated and restored. The pressure sensor 123 can detect and obtain the pressure value applied to the simulated arm.

[0040] In this embodiment, the simulated impact injury mold 13 includes a placement platform 131, a hydraulic damper 133, an impact head 134, and a stainless steel plate 135. The placement platform 131 is fixed to one end of the corresponding external threaded connector 7. A groove 132 is provided on the side of the placement platform 131 away from the external threaded connector 7. The hydraulic damper 133 is fixedly installed on the bottom inner wall of the groove 132. The impact head 134 is fixedly installed on the output shaft end of the hydraulic damper 133. The stainless steel plate 135 is fixedly installed on the side of the placement platform 131 away from the external threaded connector 7. The hydraulic damper 133 can be used to move the impact head 134 linearly, so that the impact head 134 impacts the stainless steel plate 135. By bringing the simulated arm into contact with the surface of the stainless steel plate 135, the vibration force generated by the impact of the stainless steel plate 135 is transmitted to the simulated arm, which can simulate and restore the injury and dangerous state caused when a human hand is subjected to impact.

[0041] In this embodiment, in order to ensure that the stainless steel plate 135 completely covers the groove 132, the cross-sectional dimension of the stainless steel plate 135 is designed to be larger than the cross-sectional dimension of the groove 132.

[0042] In this embodiment, a simulated arm clamping and adjusting mechanism 14 is provided on the top of the base 1. The simulated arm clamping and adjusting mechanism 14 is used to clamp and fix the simulated arm and adjust the position of the simulated arm. The simulated arm clamping and adjusting mechanism 14 includes an adjusting component and a clamping component. The adjusting component includes a bearing 141, a vertical shaft 142, a first connecting arm 143, a second connecting arm 144, a third connecting arm 145, two third motors 146, a fourth motor 1410, a main gear 1411, and a secondary gear 1412. The bearing 141 and the fourth motor 1410 are both fixedly installed on the top of the base 1, and the vertical shaft 142 is rotatably installed on the bearing 141. At the top of shaft 142, connecting arm 143 is fixedly mounted on the top of vertical shaft 142. Connecting arm 144 is rotatably mounted on the top of connecting arm 143 via hinge shaft 1. Connecting arm 145 is rotatably mounted on the top of connecting arm 144 via hinge shaft 2. Two motors 146 are fixedly mounted on the front sidewalls of connecting arm 143 and connecting arm 144 respectively. The output shaft ends of the two motors 146 are fixedly connected to the front ends of hinge shaft 1 and hinge shaft 2 respectively. Main gear 1411 is fixedly mounted on the output shaft end of motor 1410. Secondary gear 1412 is fixedly sleeved on vertical shaft 142. Main gear 1411 and... The auxiliary gear 1412 meshes with the clamping assembly, which includes a clamping seat 147, three electric telescopic rods 148, and three clamping plates 149. The clamping seat 147 is fixedly installed at the end of the connecting arm 3 145 away from the connecting arm 2 144. A clamping groove is provided on the side of the clamping seat 147 away from the connecting arm 3 145. The three electric telescopic rods 148 are all fixedly installed on the outer wall of the clamping seat 147 and are distributed in a ring at equal intervals. The output shaft ends of the three electric telescopic rods 148 all extend into the clamping groove. The three clamping plates 149 are respectively fixedly installed on the output shaft ends of the corresponding electric telescopic rods 148. The three electric telescopic rods 148 can be used to drive the corresponding... The clamping plate 149 moves linearly, and with the coordinated action of the three clamping plates 149, one end of the simulated arm can be clamped and fixed in the clamping slot. This eliminates the need for teachers to hold the simulated arm during mechanical injury simulation teaching, making the teaching process more convenient. By controlling the operation of two motors 146 and 1410 respectively, the position of the clamped and fixed simulated arm can be adjusted from multiple angles and directions to simulate the risk of work-related injuries under different working postures. This enhances the interactivity and relevance of teaching, making the scenario of mechanical injury to the simulated arm more realistic, helping students to understand the mechanism of danger more deeply and master the correct safety operating procedures.

[0043] In this embodiment, the top end of the vertical shaft 142 is provided with a hinge groove 1, the hinge shaft 1 is rotatably installed in the hinge groove 1, the bottom end of the connecting arm 2 144 is fixedly sleeved on the hinge shaft 1, the top end of the connecting arm 2 144 is provided with a hinge groove 2, the hinge shaft 2 is rotatably installed in the hinge groove 2, and one end of the connecting arm 3 145 is fixedly sleeved on the hinge shaft 2, ensuring that the rotation of the connecting arm 2 144 and the connecting arm 3 145 is more stable and smooth.

[0044] In this embodiment, a U-shaped cover 15 is fixedly installed on the top of the base 1. The bearing seat 141, vertical shaft 142, motor 1410, main gear 1411 and auxiliary gear 1412 are all located inside the U-shaped cover 15. An avoidance hole is provided on the top of the U-shaped cover 15. The top end of the connecting arm 143 passes through the avoidance hole. The design of the U-shaped cover 15 can isolate the bearing seat 141, vertical shaft 142, motor 1410, main gear 1411 and auxiliary gear 1412. The design of the avoidance hole can ensure that the connecting arm 143 can rotate smoothly.

[0045] In this embodiment, it should be noted that a controller is installed on the top of the base 1. The controller is equipped with multiple control buttons and a display screen. Motor 1 (3), Motor 2 (115), Hydraulic cylinder 122, Pressure sensor 123, Hydraulic damper 133, two Motor 3 (146), three electric telescopic rods 148, and Motor 4 (1410) are all electrically connected to the controller. Motor 1 (3), two Motor 3 (146), and Motor 4 (1410) are all reversible motors. The multiple control buttons are used to control the power supply and operation of Motor 1 (3), Motor 2 (115), Hydraulic cylinder 122, Pressure sensor 123, Hydraulic damper 133, two Motor 3 (146), three electric telescopic rods 148, and Motor 4 (1410) respectively. The pressure value detected by pressure sensor 123 can be displayed on the display screen for teachers and students to view.

[0046] The electric telescopic rod 148 and motor 1410 are electrically connected by wires. The controller has a built-in PLC control module, and its front is equipped with control buttons corresponding to each component and a display screen for displaying pressure values. When switching simulation scenes, pressing the control button corresponding to motor 3 can control motor 3 to rotate forward and backward, thereby driving the stainless steel triangular base 4 to rotate clockwise or counterclockwise. When adjusting the position of the simulated arm, the control button corresponding to motor 1410 can control its output shaft to rotate. Through the meshing of the main gear 1411 and the secondary gear 1412, the vertical shaft 142 is driven to rotate horizontally. The control buttons corresponding to the two motors 146 can respectively control the connecting arm 144 and the connecting arm 145 to swing around the hinge axis 1 and the hinge axis 2. The three motors work together to achieve multi-angle position adjustment of the simulated arm. The three electric telescopic rods 148 are driven by the same set of parallel circuits. When the clamping control button is pressed, the three electric telescopic rods 148 extend or retract synchronously, so that the three clamping plates 149 move equidistantly with the center of the clamping seat 147 as the reference, ensuring uniform clamping of the simulated arm.

[0047] The hydraulic damper 133 is an adjustable hydraulic damper of model HBD-50, with a maximum output shaft stroke of 80mm and a maximum thrust of 500N. The extension and retraction speed and thrust of the hydraulic damper 133 can be set by adjusting the damping adjustment knob on the controller to simulate the impact force and frequency under different working conditions. When simulating an impact scenario, the operator can adjust the impact speed of the impact head 134 to any value within the range of 0.5m / s to 2m / s and the thrust to 50N to 500N according to teaching needs, so that the vibration force generated by the stainless steel plate 135 can accurately reflect the degree of damage caused by the impact of different objects.

[0048] When disassembling the simulated belt entanglement injury mold 11, first rotate the internal thread swivel 8 counterclockwise to move the internal thread anti-detachment ring 9 away from the stainless steel triangular seat 4 along the thread teeth of the external thread locking ring 10. After the internal thread anti-detachment ring 9 is completely disengaged from the external thread locking ring 10, the neodymium iron boron magnet post 6 can be pulled out of the assembly groove 5 by applying a pulling force of only 5-10N using the magnetic attraction force between the neodymium iron boron magnet post 6 and the inner wall of the assembly groove 5. During installation, align the neodymium iron boron magnet post 6 with the assembly groove 5. When the neodymium iron boron magnet post 6 is inserted into the slot 5, and its end is 2mm from the bottom of the slot 5, the neodymium iron boron magnet on its surface attracts the ferromagnetic material on the inner wall of the slot 5, automatically attracting the neodymium iron boron magnet post 6 to the bottom of the slot 5. At this time, the internal thread swivel ring 8 is rotated clockwise, causing the internal thread anti-detachment ring 9 to move along the thread of the external thread locking ring 10 towards the stainless steel triangular seat 4, until the internal thread anti-detachment ring 9 and the external thread locking ring 10 are fully engaged, achieving double fixation of the mold. Testing shows that this connection method can withstand a radial tensile force of 50N without loosening, ensuring stable installation of the mold during teaching and allowing for quick assembly and disassembly through simple rotation, significantly improving mold change efficiency.

[0049] The axes of the three electric telescopic rods 148 all point towards the center of the clamping slot, and the angle between them and the central axis of the clamping slot is 30°, ensuring that the force exerted on the simulated arm by the three clamping plates 149 is evenly distributed. When the simulated arm needs to be clamped, a clamping command is input through the controller, and the three electric telescopic rods 148 extend synchronously at a speed of 0.5 mm / s until the clamping plates 149 contact the surface of the simulated arm and generate a pre-tightening force of 20 N. This pre-tightening force is fed back to the controller through a pressure sensor to ensure that the clamping force is moderate and stable. When releasing, the electric telescopic rods 148 retract at a speed of 1 mm / s to avoid the simulated arm shaking or being damaged due to excessive speed. This design not only realizes the rapid clamping of the simulated arm, but also ensures the stability of the simulated arm's position during teaching through precise speed and force control, effectively solving the problems of cumbersome operation and uneven clamping force in traditional manual clamping methods.

[0050] Since its wiring and control methods are mature technologies in this field, they will not be elaborated upon in this article.

[0051] Based on the above structure, the working principle of the mechanical injury model for workplace injury simulation teaching provided in this application is as follows.

[0052] Insert one end of the simulated arm into the clamping slot, and control the three electric telescopic rods 148 to drive the corresponding clamping plates 149 to move linearly. With the coordinated action of the three clamping plates 149, one end of the simulated arm can be firmly clamped and fixed, eliminating the need for teachers to hold the simulated arm for mechanical work injury simulation teaching, thus facilitating teaching operations.

[0053] After the simulated arm is clamped and fixed, during the instruction on how to simulate a human hand being wrapped in belt 114, motor 3 is first controlled to run. Its output shaft drives the stainless steel triangular seat 4 to rotate, causing the simulated belt-wound injury mold 11, the simulated stamping press clamp injury mold 12, and the simulated impact injury mold 13 to rotate along with the stainless steel triangular seat 4. When the simulated belt-wound injury mold 11 is rotated to a suitable position facing the simulated arm, motor 3 is stopped. Then, motor 115 is controlled to run, and its output shaft drives the connected rotating shaft 112 to rotate. This rotating shaft 112 drives another pulley 113 to rotate synchronously through belt 114, forming a belt drive system. The operation of motor 1410 controls the rotation of vertical shaft 142 through the meshing of main gear 1411 and secondary gear 1412, thereby achieving the horizontal rotation of connecting arm 143. This allows for the rotational adjustment of the clamped and fixed simulated arm. By controlling the operation of two motors 146, the swinging of connecting arm 144 and connecting arm 145 can be controlled respectively. Under the coordinated control of motor 1410 and the two motors 146, the position of the simulated arm can be adjusted at multiple angles and directions. During teaching, controlling the simulated arm to gradually approach the rotating belt 114 can simulate the dangerous situation of the hand being caught in the belt and causing injury, and can also simulate the risk of workplace injury under different hand working postures.

[0054] After the simulated arm is clamped and fixed, when teaching the simulation of a human hand being pinched, first control motor 3 to run, its output shaft drives the stainless steel triangular seat 4 to rotate. When the simulated stamping machine clamping hand injury mold 12 is rotated to a suitable position facing the simulated arm, stop motor 3. Then, adjust the simulated arm to be placed under the pressure plate 124, turn on the pressure sensor 123, and control the hydraulic cylinder 122 to extend. Its output shaft drives the pressure sensor 123 and the pressure plate 124 to move linearly downward. The pressure plate 124 gradually approaches the simulated arm and applies pressure. The pressure sensor 123 detects and feeds back the pressure value applied to the simulated arm in real time, thus simulating the scenario of a hand being pinched by a stamping machine and the dangerous state of injury caused when the hand is pinched.

[0055] After the simulated arm is clamped and fixed, when teaching the simulation of a human hand being impacted, first control motor 3 to run, its output shaft drives the stainless steel triangular seat 4 to rotate. When the simulated impact injury mold 13 is rotated to a suitable position facing the simulated arm, stop motor 3. Then, adjust the simulated arm to be placed on the stainless steel plate 135, control the hydraulic damper 133 to run, its output shaft drives the impact head 134 to move in a straight line and impact the stainless steel plate 135. The vibration force generated by the impact head 134 hitting the stainless steel plate 135 is transmitted to the simulated arm, thus simulating the injury state of the hand being impacted by an object.

[0056] When the simulated belt entanglement injury mold 11 needs to be disassembled for inspection or replacement, firstly, rotate the internal threaded swivel 8 at one end of the simulated belt entanglement injury mold 11. The internal threaded swivel 8 drives the internal threaded anti-detachment ring 9 to rotate, thus unscrewing the internal threaded anti-detachment ring 9 out of the external threaded locking ring 10, thereby releasing the lock on the neodymium iron boron magnet post 6. Then, the neodymium iron boron magnet post 6 can be pulled out of the assembly slot 5, thus completing the quick disassembly of the simulated belt entanglement injury mold 11. When it is necessary to reassemble the simulated belt entanglement injury mold 11, first insert the neodymium iron boron magnet post 6 into the assembly slot 5. Utilizing the magnetic attraction between the neodymium iron boron magnet post 6 and the assembly slot 5, the simulated belt entanglement injury mold 11 can be reassembled. The simulated belt entanglement injury mold 11 is initially fixed, and then the internal thread swivel 8 is rotated in the opposite direction. The internal thread swivel 8 drives the internal thread anti-detachment ring 9 to rotate, which tightens the internal thread anti-detachment ring 9 onto the external thread locking ring 10. This provides a secondary fixation for the simulated belt entanglement injury mold 11, thus completing the rapid installation operation of the simulated belt entanglement injury mold 11 and ensuring that the installation of the simulated belt entanglement injury mold 11 is reliable and stable, preventing the simulated belt entanglement injury mold 11 from loosening or falling off due to accidental contact. Similarly, following the above operation steps, the simulated stamping machine clamp injury mold 12 or the simulated impact injury mold 13 can be disassembled for inspection or replacement as needed.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mechanical injury model for work injury simulation teaching, characterized in that, The system includes a base (1), a vertical plate (2) fixedly mounted on the top of the base (1), a motor (3) fixedly mounted on the top front side of the vertical plate (2), a stainless steel triangular seat (4) fixedly mounted on the output shaft end of the motor (3), and assembly slots (5) provided on the three sides of the stainless steel triangular seat (4). Neodymium iron boron magnets (6) are slidably installed in the three assembly slots (5). The neodymium iron boron magnets (6) are magnetically attracted and fixed to the inner wall of the assembly slots (5). An external threaded connector (7) is fixedly installed at the end of the three neodymium iron boron magnets (6) away from the stainless steel triangular seat (4). Each of the three external threaded connectors (7) is threaded with an internal threaded swivel ring (8). Each of the three internal threaded swivel rings (8) is fixedly installed with an internal threaded anti-detachment ring (9) on the side of the stainless steel triangular seat (4). Each of the three sides of the stainless steel triangular seat (4) is fixedly installed with an external threaded locking ring (10). Each of the three internal threaded anti-detachment rings (9) is threaded onto the corresponding external threaded locking ring (10). Each of the three external threaded connectors (7) is respectively provided with a simulated belt entanglement injury mold (11), a simulated press clamp injury mold (12), and a simulated impact injury mold (13).

2. The mechanical injury model for work injury simulation teaching according to claim 1, characterized in that: The simulated belt entanglement injury mold (11) includes a support plate (111), two rotating shafts (112), two pulleys (113), a belt (114), and a second motor (115). The support plate (111) is fixed to one end of the corresponding external threaded connector (7). The two rotating shafts (112) are rotatably mounted on the front side wall of the support plate (111). The two pulleys (113) are respectively fixedly sleeved on the corresponding rotating shafts (112). The belt (114) is wound around the two pulleys (113). The second motor (115) is fixedly mounted on the rear side wall of the support plate (111). The output shaft end of the second motor (115) is fixedly connected to the rear end of one of the rotating shafts (112).

3. The mechanical injury model for work injury simulation teaching according to claim 1, characterized in that: The simulated stamping press clamping mold (12) includes a U-shaped plate (121), a hydraulic cylinder (122), a pressure sensor (123), and a pressure plate (124). The U-shaped plate (121) is fixed to one end of the corresponding external thread connector (7). The hydraulic cylinder (122) is fixedly installed on the top of the U-shaped plate (121). The output shaft end of the hydraulic cylinder (122) extends into the U-shaped plate (121). The pressure sensor (123) is fixedly installed on the output shaft end of the hydraulic cylinder (122). The pressure plate (124) is fixedly installed on the bottom of the pressure sensor (123).

4. The mechanical injury model for work injury simulation teaching according to claim 1, characterized in that: The simulated impact injury mold (13) includes a placement platform (131), a hydraulic damper (133), an impact head (134), and a stainless steel plate (135). The placement platform (131) is fixed to one end of the corresponding external threaded connector (7). A groove (132) is provided on the side of the placement platform (131) away from the external threaded connector (7). The hydraulic damper (133) is fixedly installed on the bottom inner wall of the groove (132). The impact head (134) is fixedly installed on the output shaft end of the hydraulic damper (133). The stainless steel plate (135) is fixedly installed on the side of the placement platform (131) away from the external threaded connector (7).

5. The mechanical injury model for work injury simulation teaching according to claim 4, characterized in that: The cross-sectional dimension of the stainless steel plate (135) is larger than the cross-sectional dimension of the groove (132).

6. The mechanical injury model for teaching work injury simulation according to claim 1, characterized in that: The top of the base (1) is provided with a simulated arm clamping adjustment mechanism (14). The simulated arm clamping adjustment mechanism (14) is used to clamp and fix the simulated arm and adjust the position of the simulated arm. The simulated arm clamping adjustment mechanism (14) includes an adjustment component and a clamping component. The adjustment component includes a bearing seat (141), a vertical shaft (142), a connecting arm one (143), a connecting arm two (144), a connecting arm three (145), two motors three (146), a motor four (1410), a main gear (1411), and a secondary gear (1412). The bearing seat (141) and the motor four (1410) are both fixedly installed on the top of the base (1). The vertical shaft (142) is rotatably installed on the top of the bearing seat (141). The connecting arm one (143) is fixedly installed on the top of the base (1). The first connecting arm (143) is fixedly installed at the top of the vertical shaft (142). The second connecting arm (144) is rotatably installed at the top of the first connecting arm (143) via the first hinge shaft. The third connecting arm (145) is rotatably installed at the top of the second connecting arm (144) via the second hinge shaft. The two third motors (146) are respectively fixedly installed on the front sidewalls of the first connecting arm (143) and the second connecting arm (144). The output shaft ends of the two third motors (146) are respectively fixedly connected to the front ends of the first hinge shaft and the second hinge shaft. The main gear (1411) is fixedly installed at the output shaft end of the fourth motor (1410). The auxiliary gear (1412) is fixedly sleeved on the vertical shaft (142). The main gear (1411) meshes with the auxiliary gear (1412).

7. The mechanical injury model for work injury simulation teaching according to claim 6, characterized in that: The top end of the vertical shaft (142) is provided with a hinge groove, the hinge shaft is rotatably installed in the hinge groove, the bottom end of the connecting arm (144) is fixedly sleeved on the hinge shaft, the top end of the connecting arm (144) is provided with a hinge groove, the hinge shaft is rotatably installed in the hinge groove, and one end of the connecting arm (145) is fixedly sleeved on the hinge shaft.

8. The mechanical injury model for work injury simulation teaching according to claim 6, characterized in that: The clamping assembly includes a clamping seat (147), three electric telescopic rods (148), and three clamping plates (149). The clamping seat (147) is fixedly installed at the end of the connecting arm three (145) away from the connecting arm two (144). A clamping groove is provided on the side of the clamping seat (147) away from the connecting arm three (145). The three electric telescopic rods (148) are all fixedly installed on the outer wall of the clamping seat (147) and are distributed in a ring at equal intervals. The output shaft ends of the three electric telescopic rods (148) all extend into the clamping groove. The three clamping plates (149) are respectively fixedly installed on the output shaft ends of the corresponding electric telescopic rods (148).

9. The mechanical injury model for work injury simulation teaching according to claim 6, characterized in that: A U-shaped cover (15) is fixedly installed on the top of the base (1). The shaft seat (141), vertical shaft (142), motor four (1410), main gear (1411) and auxiliary gear (1412) are all located inside the U-shaped cover (15). An avoidance hole is provided on the top of the U-shaped cover (15). The top end of the connecting arm one (143) passes through the avoidance hole.

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