A test device for orthopedic bone plate test mold

Abstract

The present invention relates to the technical field of plate test mold testing, specifically to an orthopedic plate test mold testing device, including a testing machine body and a pressure head installed on the testing machine body, a two-way slide fixedly installed on the machine base of the testing machine body, and an L-shaped block and a concave plate are fixedly connected to the two workbenches of the two-way slide respectively. When the Y-shaped plate test mold is subjected to a bending fatigue test, the strip-shaped plate test mold can be stably supported, and after the two L-shaped shells first move away from each other and then rotate in opposite directions, the L-shaped block and the two L-shaped shells form three support points, which can adaptively and stably support the Y-shaped plate test mold with three plate walls, and according to the adjustability of the two L-shaped shells, Y-shaped plate test molds of different sizes and models can also be adaptively and stably supported, thereby improving the accuracy of the bending fatigue test of the Y-shaped plate test mold.

Description

Technical Field

[0001] The invention relates to the technical field of bone plate trial mold testing, in particular to an orthopedic bone plate trial mold testing device. Background Art

[0002] The orthopedic plate trial mold is a tool used in the development and production of orthopedic medical devices. It is a model made according to the design specifications of the bone plate. Before the bone plate is officially mass-produced, engineers need to use the trial mold to check whether the bone plate can adapt to the anatomical structure of the human skeleton.

[0003] Among them, it is necessary to conduct bending fatigue test on the bone plate test mold to evaluate the mechanical properties of the bone plate test mold. Because in the daily activities of the human body, bones and bone plates will be subjected to various forces, among which bending force is a more common one. The bending fatigue test of the bone plate test mold is to simulate the condition that the bone plate is subjected to periodic bending loads in the human body for a long time, and test the ability of the bone plate test mold to resist fatigue damage.

[0004] During the test, the strip plate test mold is placed on the two supporting blocks of the bending fatigue testing machine. The loading block then applies pressure to the strip plate test mold, and continuously reciprocates up and down. The pressure point of the loading block on the strip plate test mold is between the two supporting blocks, and the loading block is controlled to move back and forth by the loading system of the bending fatigue testing machine, and the height of the loading block can be controlled. During the process, the strip plate test mold will be reciprocated by the loading block.

[0005] However, not all plate test molds are strip-shaped, but also Y-shaped, L-shaped and T-shaped, which are used for different fracture sites. Among them, the Y-shaped plate test mold has three unique plate walls. At this time, if two conventional support blocks are used to support the Y-shaped plate test mold for bending fatigue testing, it will be difficult to provide stable support, which will affect the test results. Summary of the invention

[0006] The purpose of the present invention is to provide an orthopedic bone plate trial mold testing device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an orthopedic bone plate trial mold testing device, comprising a testing machine main body and a pressure head installed on the testing machine main body, a two-way slide is fixedly installed on the machine base of the testing machine main body, and an L-shaped block and a concave plate are fixedly connected to the two workbenches of the two-way slide respectively, a two-way screw rod 1 is rotatably installed through two vertical walls of the concave plate, one end of the two-way screw rod 1 is fixedly connected to a rotating disk 1, and a slider 1 is symmetrically threadedly sleeved on the outer wall of the two-way screw rod 1, the lower ends of the two sliders 1 are both in contact with the upper surface of the horizontal wall of the concave plate, and an L-shaped shell is rotatably arranged above the two sliders 1 through a rotating assembly, and a limiting mechanism is provided on the two L-shaped shells, and the two L-shaped shells are in contact with each other, and an adjustment mechanism is provided on the concave plate.

[0008] Preferably, the rotating assembly includes a transfer tube and a torsion spring, the transfer tube is rotatably connected to the upper end of slider one, the upper end of the transfer tube is fixedly connected to the lower end of the L-shaped shell, a gear is fixedly sleeved at the lower edge of the outer wall of the transfer tube, the torsion spring is fixedly connected between the lower end of the L-shaped shell and the upper end of slider one, and the torsion spring is located on the inner side of the transfer tube.

[0009] Preferably, the limiting mechanism includes a micro electric push rod and three limiting grooves, the micro electric push rod is fixedly installed on the inner bottom end of the L-shaped shell, the output shaft end of the micro electric push rod is fixedly connected to a triangular plate, the upper triangular parts of the triangular plate are fixedly connected to support plates, the three support plates are elastically connected to limiting columns through elastic components, a distance control mechanism is provided between the three limiting columns and the L-shaped shell, the three limiting grooves are opened at the top of the L-shaped shell in a circular array around the top center of the L-shaped shell, and the three limiting columns are slidably matched with the three limiting grooves respectively.

[0010] Preferably, the elastic component includes a connecting tube, which is fixedly connected to the upper edge of the board wall of the support plate, and a connecting column is slidably inserted into the interior of the connecting tube. One end of the connecting column away from the connecting tube is fixedly connected to the outer wall of the limiting column, and a spring is fixedly connected between the other end of the connecting column and the board wall of the support plate, and the spring is located on the inner side of the connecting tube.

[0011] Preferably, the distance control mechanism includes triangular plate two, which is located directly above triangular plate one, and the upper triangular parts of triangular plate two are fixedly connected with push plates, and the top ends of the three push plates are all fitted with inclined plates, and the three inclined plates are respectively fixedly connected to the bottom ends of three limiting columns, and a lifting assembly is provided between triangular plate two and the L-shaped shell.

[0012] Preferably, the lifting assembly includes a support block and a square groove, the support block is fixedly connected to the outer wall of the L-shaped shell, a micro electric push rod 2 is fixedly installed on the upper end of the support block, the telescopic shaft end of the micro electric push rod 2 is fixedly connected to a splicing plate, the square groove is opened on the outer wall of the L-shaped shell near the micro electric push rod 2, the splicing plate and the square groove are slidably matched, and one end of the splicing plate away from the micro electric push rod 2 is fixedly connected to one end of the triangular plate 2.

[0013] Preferably, the adjustment mechanism includes a concave rod, which is fixedly connected to the tops of two vertical walls of the concave plate. Tooth plates are attached to the edges of both sides of the longitudinal walls of the concave rod, and a transmission mechanism is provided between the two tooth plates and the concave rod.

[0014] Preferably, the transmission mechanism includes two bidirectional screw rods and a slide groove, the two bidirectional screw rods penetrate and are rotatably installed in two lateral walls of the concave rod, the outer wall of the two bidirectional screw rods is symmetrically threaded with two sliders, the slide groove is provided on the longitudinal wall of the concave rod, the two sliders are both slidably matched with the slide groove, the ends of the two sliders away from the two bidirectional screw rods are respectively fixedly connected to the back sides of the two tooth plates, and one end of the two bidirectional screw rods is fixedly connected to the rotating disk two.

[0015] Preferably, a rubber ring 1 is fixedly connected to a vertical wall of the concave plate, and the inner ring surface of the rubber ring 1 is tightly fitted with the outer wall of the bidirectional screw rod 1.

[0016] Preferably, a transverse wall of the concave rod is fixedly connected with a rubber ring 2, and the inner ring surface of the rubber ring 2 is tightly fitted with the outer wall of the bidirectional screw rod 2.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the Y-shaped bone plate test mold is subjected to bending fatigue test, through the cooperation of the bidirectional slide, L-shaped block, concave plate, bidirectional screw rod 1, rotating disk 1, slider 1, rotating assembly, L-shaped shell, adjustment mechanism and transmission mechanism, when the two L-shaped shells fit together, the strip-shaped bone plate test mold can be stably supported. After the two L-shaped shells first move away from each other and then rotate in opposite directions, the L-shaped block and the two L-shaped shells form three support points, which can adaptively and stably support the Y-shaped bone plate test mold with three plate walls, and according to the adjustability of the two L-shaped shells, Y-shaped bone plate test molds of different sizes and models can also be adaptively and stably supported, thereby improving the accuracy of the bending fatigue test of the Y-shaped bone plate test mold.

[0019] 2. Through the cooperation of the limiting mechanism, the elastic component, the distance control mechanism and the lifting component, the Y-shaped plate test mold can be limited to a certain extent when it is stably supported, so as to avoid the Y-shaped plate test mold being positioned in a position where the bending fatigue test occurs, and the limiting mechanism does not affect the reciprocating bending movement of the Y-shaped plate test mold, thereby further improving the accuracy of the Y-shaped plate test mold test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the bidirectional slide, L-shaped shell and L-shaped block of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of the structure at center;

[0023] Figure 4 A partial cross-sectional view of the transfer tube and the gear of the present invention;

[0024] Figure 5 A partial cross-sectional view of an L-shaped shell of the present invention;

[0025] Figure 6 A partial cross-sectional view of the connecting pipe of the present invention;

[0026] Figure 7 It is a display diagram of the splicing plate, the first micro electric push rod, the support block, the second triangular plate and the push plate of the present invention;

[0027] Figure 8 It is a display diagram of the L-shaped shell, the limiting groove and the square groove of the present invention.

[0028] In the attached drawings, the list of components represented by each reference numeral is as follows: 1. Testing machine body; 2. Pressurizing head; 3. L-shaped block; 4. Bidirectional slide; 5. L-shaped shell; 6. Limiting column; 7. Concave rod; 8. Tooth plate; 9. Bidirectional screw rod 1; 10. Concave plate; 11. Sliding block 1; 12. Sliding groove; 13. Sliding block 2; 14. Bidirectional screw rod 2; 15. Rotating disk 2; 16. Rotating disk 1; 17. Torsion spring; 18. Gear; 19. Limiting groove; 20. Connecting column; 21. Support plate; 22. Inclined plate; 23. Splicing plate; 24. Square groove; 25. Micro electric push rod 2; 26. Support block; 27. Micro electric push rod 1; 28. Transfer tube; 29. ​​Triangular plate 1; 30. Triangular plate 2; 31. Rubber ring 1; 32. Push plate; 33. Connecting tube; 34. Spring; 35. Rubber ring 2. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1 - Figure 8 A test device for an orthopedic bone plate mold comprises a test machine body 1 and a pressure head 2 installed on the test machine body 1. A bidirectional slide 4 is fixedly installed on the machine base of the test machine body 1. An L-shaped block 3 and a concave plate 10 are fixedly connected to two workbenches of the bidirectional slide 4 respectively. A bidirectional screw rod 9 is rotatably installed through two vertical walls of the concave plate 10. A rotating disk 16 is fixedly connected to one end of the bidirectional screw rod 9. A slider 11 is symmetrically threadedly sleeved on the outer wall of the bidirectional screw rod 9. The lower ends of the two sliders 11 are both in contact with the upper surface of the horizontal wall of the concave plate 10. An L-shaped shell 5 is rotatably arranged above the two sliders 11 through a rotating assembly. A limiting mechanism is arranged on the two L-shaped shells 5. The two L-shaped shells 5 are in contact with each other, and an adjusting mechanism is arranged on the concave plate 10.

[0031] The rotating assembly includes a transfer tube 28 and a torsion spring 17. The transfer tube 28 is rotatably connected to the upper end of the slider 11. The upper end of the transfer tube 28 is fixedly connected to the lower end of the L-shaped shell 5. A gear 18 is fixedly sleeved on the lower edge of the outer wall of the transfer tube 28. The torsion spring 17 is fixedly connected between the lower end of the L-shaped shell 5 and the upper end of the slider 11. The torsion spring 17 is located on the inner side of the transfer tube 28.

[0032] The adjustment mechanism includes a concave rod 7, which is fixedly connected to the top of two vertical walls of the concave plate 10. Tooth plates 8 are attached to the edges of both sides of the longitudinal walls of the concave rod 7. A transmission mechanism is provided between the two tooth plates 8 and the concave rod 7.

[0033] The transmission mechanism includes a bidirectional screw rod 14 and a slide groove 12. The bidirectional screw rod 14 penetrates and is rotatably installed in two lateral walls of the concave rod 7. The outer wall of the bidirectional screw rod 14 is symmetrically threaded with a slider 13. The slide groove 12 is opened on the longitudinal wall of the concave rod 7. The two sliders 13 are both slidably matched with the slide groove 12. The ends of the two sliders 13 away from the bidirectional screw rod 14 are respectively fixedly connected to the back sides of the two tooth plates 8, and one end of the bidirectional screw rod 14 is fixedly connected to a rotating disk 15.

[0034] A rubber ring 31 is fixedly connected to a vertical wall of the concave plate 10, and the inner ring surface of the rubber ring 31 is tightly fitted with the outer wall of the bidirectional screw rod 9; specifically, relying on the friction between the rubber ring 31 and the bidirectional screw rod 9, the bidirectional screw rod 9 can maintain a certain fixed state after rotation.

[0035] A rubber ring 2 35 is fixedly connected to a transverse wall of the concave rod 7, and the inner ring surface of the rubber ring 2 35 is tightly fitted with the outer wall of the bidirectional screw rod 2 14; specifically, relying on the friction between the rubber ring 2 35 and the bidirectional screw rod 2 14, the bidirectional screw rod 1 9 can maintain a certain fixed state after rotation.

[0036] In this embodiment, a bending fatigue test is performed on the Y-shaped plate test mold. First, the bidirectional slide 4 is started. The bidirectional slide 4 can drive the concave plate 10 and the L-shaped block 3 to move away from each other. The concave plate 10 can drive the two L-shaped shells 5 to move together. The combined size of the two L-shaped shells 5 is equal to the size of the L-shaped block 3. The L-shaped block 3 and the two L-shaped shells 5 are supports for supporting the Y-shaped plate test mold. Then, the supports at the two locations will move away from each other. The distance of moving away from each other can be preliminarily selected based on the length of the Y-shaped plate.

[0037] Then, the rotating disk 16 is rotated to drive the bidirectional screw rod 9 to rotate on the concave plate 10. The bidirectional screw rod 9 can drive the two sliders 11 to move away from each other on the horizontal wall upper surface of the concave plate 10. The two sliders 11 can drive the correspondingly connected L-shaped shells 5 to move together through their respective connected adapter tubes 28 and torsion springs 17. Then, the two L-shaped shells 5 will move away from each other. At this time, the distance between the two L-shaped shells 5 moving away from each other can be selected according to the spacing between the two inclined branches of the Y-shaped bone plate trial mold.

[0038] Finally, the rotating disk 2 15 is rotated, and the rotating disk 2 15 can drive the bidirectional screw rod 2 14 to rotate on the concave rod 7, and the bidirectional screw rod 2 14 can drive the two sliders 2 13 to slide close to each other on the slide groove 12 on the concave rod 7, and the two sliders 2 13 can drive the toothed plates 8 connected to each other to move together, so that the two toothed plates 8 are in a state of moving close to each other, and the two toothed plates 8 will contact the gears 18 outside the two transfer tubes 28 respectively, then the movement of the two toothed plates 8 close to each other will drive the two gears 18 to rotate respectively, and the two gears 18 The two transfer tubes 28 can drive the connected transfer tubes 28 to rotate. The two transfer tubes 28 can drive the connected L-shaped shells 5 to rotate. The rotation directions of the two L-shaped shells 5 are opposite. The two L-shaped shells 5 will twist the torsion springs 17 connected to the corresponding sliders 11 until the two L-shaped shells 5 rotate to be parallel to the two inclined branches of the Y-shaped plate mold. At this time, the two inclined branches of the Y-shaped plate mold can be placed on the top of the two L-shaped shells 5, and the other wall of the Y-shaped plate can be placed on the top of the L-shaped block 3. It should be noted that by reversing the rotating disk 16 and the rotating disk 2 15 in turn, under the action of the torsion spring 17 and the corresponding toothed plate 8 pushing the corresponding gear 18 in the opposite direction, the two L-shaped shells 5 can quickly return to the state as shown in the figure. Figure 2 Status shown.

[0039] Finally, the testing machine body 1 is started to drive the pressure head 2 to move downward and slightly squeeze the Y-shaped plate test mold to cause it to slightly bend. Finally, the pressure head 2 is controlled by the loading system of the testing machine body 1 to move back and forth up and down, thereby driving the Y-shaped plate test mold to bend back and forth up and down, thereby performing a bending fatigue test on the Y-shaped plate test mold.

[0040] It should be noted that when the two L-shaped shells 5 are attached to each other, Figure 2 As shown, the L-shaped block 3 and the two L-shaped shells 5 can provide stable support for the strip-shaped bone plate mold, and then in view of the above, when the two L-shaped shells 5 first move away from each other and then rotate in opposite directions, the L-shaped block 3 and the two L-shaped shells 5 can form three support points, so the Y-shaped bone plate mold with three plate walls can be adaptively and stably supported, and according to the adjustability of the two L-shaped shells 5, Y-shaped bone plate molds of different sizes and models can also be adaptively and stably supported, thereby improving the accuracy of the bending fatigue test of the Y-shaped bone plate mold.

[0041] Example 2: Please refer to Figure 2 as well as Figure 4 - Figure 8The present embodiment further explains Example 1, the limiting mechanism includes a micro electric push rod 27 and three limiting grooves 19, the micro electric push rod 27 is fixedly installed at the inner bottom end of the L-shaped shell 5, the output shaft end of the micro electric push rod 27 is fixedly connected with a triangular plate 29, the upper triangular parts of the triangular plate 29 are fixedly connected with support plates 21, the three support plates 21 are elastically connected with limiting columns 6 through elastic components, a distance control mechanism is provided between the three limiting columns 6 and the L-shaped shell 5, the three limiting grooves 19 are opened at the top of the L-shaped shell 5 in a circular array around the top center of the L-shaped shell 5, and the three limiting columns 6 are slidably matched with the three limiting grooves 19 respectively.

[0042] The elastic component includes a connecting tube 33, which is fixedly connected to the upper edge of the board wall of the support plate 21. A connecting column 20 is slidably inserted into the interior of the connecting tube 33. One end of the connecting column 20 away from the connecting tube 33 is fixedly connected to the outer wall of the limiting column 6. A spring 34 is fixedly connected between the other end of the connecting column 20 and the board wall of the support plate 21. The spring 34 is located on the inner side of the connecting tube 33.

[0043] The distance control mechanism includes a triangular plate 2 30, which is located directly above the triangular plate 1 29. The upper triangular parts of the triangular plate 20 are fixedly connected with a push plate 32. The top ends of the three push plates 32 are all fitted with an inclined plate 22. The three inclined plates 22 are respectively fixedly connected to the bottom ends of the three limit columns 6. A lifting component is provided between the triangular plate 2 30 and the L-shaped shell 5.

[0044] The lifting assembly includes a support block 26 and a square groove 24. The support block 26 is fixedly connected to the outer wall of the L-shaped shell 5. A micro electric push rod 25 is fixedly installed on the upper end of the support block 26. The telescopic shaft end of the micro electric push rod 25 is fixedly connected to a splicing plate 23. The square groove 24 is opened on the outer wall of the L-shaped shell 5 near the micro electric push rod 25. The splicing plate 23 and the square groove 24 are slidably matched. One end of the splicing plate 23 away from the micro electric push rod 25 is fixedly connected to one end of the triangular plate 2 30.

[0045] In this embodiment, a hole groove for screws to pass through is opened on the Y-shaped bone plate trial mold. The hole groove is designed mainly to facilitate fixation at the fracture. When the two inclined branches of the Y-shaped bone plate trial mold are placed on the top of the two L-shaped shells 5 respectively, a suitable position hole groove of the two inclined branches on the Y-shaped bone plate trial mold is placed outside the three limit columns 6 on the top of the two L-shaped shells 5 respectively, and then the micro-electric push rod 25 on one L-shaped shell 5 is started to drive the corresponding splicing plate 23 to slide down in the corresponding square groove 24. The splicing plate 23 will drive the triangular plate 2 30 and the three push plates 32 to move downward together. At this time, because the three springs 34 are all in a stretched state, under the action of the three springs 34, the three limit columns 6 will synchronously move away from the center of the top of the L-shaped shell 5 When the three push plates 32 move downward, the top ends of the three push plates 32 will respectively fit with the wall surfaces of the three inclined plates 22, and each of the limiting columns 6 will drive the connecting columns 20 respectively connected to them to slide into the corresponding connecting tubes 33 until the outer walls of the three limiting columns 6 are all fitted with the hole grooves of an inclined branch on the Y-shaped plate test mold. The three limiting columns 6 on the other L-shaped shell 5 can also be fitted with the hole grooves of another inclined branch on the Y-shaped plate test mold as described above. Then, the Y-shaped plate test mold can be limited to a certain extent to avoid positional deviation of the Y-shaped plate test mold when it bends back and forth up and down, thereby further improving the accuracy of the Y-shaped plate test mold test.

[0046] It should be noted that since each limit column 6 is elastically connected to the corresponding support plate 21 through the spring 34, when the Y-shaped bone plate trial mold is driven by the pressure head 2 to bend back and forth up and down, the limit column 6 will not hinder the bending of the Y-shaped bone plate trial mold. The corresponding limit column 6 will be driven to slide in the corresponding limit groove 19 and stretch the spring 34 due to the bending of the Y-shaped bone plate trial mold.

[0047] It should also be noted that when the two L-shaped shells 5 are fitted together, the micro-electric push rods 27 in the two L-shaped shells 5 can be activated to drive the two triangular plates 29 and the three support plates 21, three connecting tubes 33, three connecting columns 20 and three limiting columns 6 connected to the two triangular plates 29 to move downward together, and during the process, the two micro-electric push rods 25 are activated to drive the respectively connected splicing plates 23, triangular plates 2 30 and three push plates 32 to move downward together until the limiting columns 6 on the two L-shaped shells 5 are hidden in their respective interiors, so that the strip-shaped bone plate trial mold will not be affected by the limiting columns 6 when placed on the L-shaped block 3 and the two L-shaped shells 5.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic bone plate test mold testing device, comprising a testing machine body (1) and a pressure head (2) mounted on the testing machine body (1), characterized in that: A bidirectional slide (4) is fixedly installed on the base of the testing machine body (1), and an L-shaped block (3) and a concave plate (10) are fixedly connected on two workbenches of the bidirectional slide (4), and a bidirectional screw rod (9) is rotatably installed in two vertical walls of the concave plate (10), and one end of the bidirectional screw rod (9) is fixedly connected to a rotating disk (16), and a slider (11) is symmetrically threadedly sleeved on the outer wall of the bidirectional screw rod (9), and the lower ends of the two sliders (11) are both in contact with the upper surface of the horizontal wall of the concave plate (10), and an L-shaped shell (5) is rotatably arranged above the two sliders (11) through a rotating assembly, and the two L-shaped shells (5) are both provided with a limiting mechanism, and the two L-shaped shells (5) are in contact with each other, and an adjustment mechanism is provided on the concave plate (10); The rotating assembly comprises a transfer tube (28) and a torsion spring (17); the transfer tube (28) is rotatably connected to the upper end of the slider (11); the upper end of the transfer tube (28) is fixedly connected to the lower end of the L-shaped shell (5); a gear (18) is fixedly sleeved on the lower edge of the outer wall of the transfer tube (28); the torsion spring (17) is fixedly connected between the lower end of the L-shaped shell (5) and the upper end of the slider (11); and the torsion spring (17) is located on the inner side of the transfer tube (28); The limiting mechanism comprises a micro electric push rod (27) and three limiting grooves (19), wherein the micro electric push rod (27) is fixedly mounted on the inner bottom end of the L-shaped shell (5), and the output shaft end of the micro electric push rod (27) is fixedly connected to a triangular plate (29), and the upper triangular parts of the triangular plate (29) are fixedly connected to support plates (21), and the three support plates (21) are elastically connected to limiting columns (6) through elastic components, and a distance control mechanism is provided between the three limiting columns (6) and the L-shaped shell (5), and the three limiting grooves (19) are arranged in a circular array around the top center of the L-shaped shell (5) and are arranged at the top of the L-shaped shell (5), and the three limiting columns (6) are respectively slidably matched with the three limiting grooves (19); The elastic component comprises a connecting tube (33), the connecting tube (33) being fixedly connected to the upper edge of the plate wall of the support plate (21), a connecting column (20) being slidably inserted into the interior of the connecting tube (33), one end of the connecting column (20) away from the connecting tube (33) being fixedly connected to the outer wall of the limiting column (6), and a spring (34) being fixedly connected between the other end of the connecting column (20) and the plate wall of the support plate (21), the spring (34) being located on the inner side of the connecting tube (33); The distance control mechanism comprises a second triangular plate (30), the second triangular plate (30) being located directly above the first triangular plate (29), the upper triangular parts of the second triangular plate (30) being fixedly connected to a push plate (32), the top ends of the three push plates (32) being fitted with an inclined plate (22), the three inclined plates (22) being respectively fixedly connected to the bottom ends of the three limit columns (6), and a lifting assembly being provided between the second triangular plate (30) and the L-shaped shell (5); The lifting assembly comprises a support block (26) and a square groove (24), wherein the support block (26) is fixedly connected to the outer wall of the L-shaped shell (5), a second micro electric push rod (25) is fixedly mounted on the upper end of the support block (26), a telescopic shaft end of the second micro electric push rod (25) is fixedly connected to a splicing plate (23), the square groove (24) is arranged on the outer wall of the L-shaped shell (5) near the second micro electric push rod (25), the splicing plate (23) and the square groove (24) are slidably matched, and one end of the splicing plate (23) away from the second micro electric push rod (25) is fixedly connected to one end of the second triangular plate (30); The adjustment mechanism comprises a concave rod (7), the concave rod (7) being fixedly connected to the tops of two vertical walls of the concave plate (10), tooth plates (8) being attached to the edges of both sides of the long wall of the concave rod (7), and a transmission mechanism being provided between the two tooth plates (8) and the concave rod (7); The transmission mechanism comprises a bidirectional screw rod (14) and a slide groove (12). The bidirectional screw rod (14) is rotatably installed in two short walls of the concave rod (7). The outer wall of the bidirectional screw rod (14) is symmetrically threaded with a slider (13). The slide groove (12) is provided on the longitudinal wall of the concave rod (7). Both sliders (13) are slidably matched with the slide groove (12). One end of the two sliders (13) away from the bidirectional screw rod (14) is fixedly connected to the back of the two tooth plates (8) respectively. One end of the bidirectional screw rod (14) is fixedly connected to a rotating disk (15).

2. An orthopedic bone plate test mold testing device according to claim 1, characterized in that: A rubber ring 1 (31) is fixedly connected to a vertical wall of the concave plate (10), and the inner ring surface of the rubber ring 1 (31) is tightly fitted to the outer wall of the bidirectional screw rod 1 (9).

3. An orthopedic bone plate test mold testing device according to claim 2, characterized in that: A second rubber ring (35) is fixedly connected to a transverse wall of the concave rod (7), and the inner ring surface of the second rubber ring (35) is tightly fitted to the outer wall of the second bidirectional screw rod (14).

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