Bow simulation traction vibration reduction testing machine

Abstract

The invention relates to the technical field of bow testing, in particular to a bow simulation traction vibration reduction testing machine. A traction mechanism is arranged on the side, away from the bow, of the balancing weight and used for clamping or loosening the balancing weight and driving the balancing weight to move in a reciprocating mode, and the balancing weight pulls the bowstring through the bowstring rope so as to simulate the pulling and releasing action of the bowstring. A vibration reduction mechanism is arranged at the end, close to the bow, of the balancing weight guide rail and used for buffering and reducing vibration of impact force of the balancing weight. The balancing weight enables the balance weight of the bowstring to be the same as that in actual use during bow testing, the accuracy of the testing result is improved, the balancing weight can reciprocate in the balancing weight guide rail, the balancing weight can be pulled repeatedly through the release device, repeated installation is not needed, and the testing efficiency is improved. The anti-vibration pad can play a role in vibration reduction and protect the balancing weight, and the sliding block can move forwards for a certain distance along the sliding block guide rail, so that the impact force of the balancing weight is effectively relieved, and the whole testing device is well protected.

Description

Technical Field:

[0001] The present invention relates to the technical field of bow testing, and in particular, to a bow simulation pulling and damping testing machine. Background Art:

[0002] Currently, during the production process of compound bows, due to the influence of the fatigue limit of the bow body, the number of times of drawing the bow is not infinite. Therefore, before leaving the factory, it is necessary to test its lifespan for the compound bow manufacturer to calibrate the lifespan of its products and give a warning to users. For example, the patent application with the publication number CN206113761U discloses a bow lifespan testing device. When testing the bow, it only directly pulls the bowstring through the string-hooking component. However, when the bow is actually used, the pulling of the bowstring is used in cooperation with an arrow or a projectile. This results in the weight of the bowstring during the bow test being different from that in actual use, thus leading to inaccurate test results. Another example is the patent application with the publication number CN216283009U, which discloses a bow testing device. Although it drives an arrow or a projectile and the bowstring to perform pulling through a string-clamping device, improving the test accuracy, it needs to launch the arrow or the projectile, and the repeated installation of the arrow or the projectile greatly reduces the test efficiency. And if a counterweight is used instead of an arrow or a projectile, since the impact force generated by the counterweight at the moment of launch can reach several hundred megapascals, a special damping structure needs to be designed for protection. At present, there is no good way to solve the above problems. In addition, after the compound bow is installed, it is necessary to adjust its vertical position and inclination angle in the vertical plane so that the center of the bowstring is exactly aligned with the counterweight, and the angle of the counterweight during the pulling process matches the angle of the arrow or the projectile during actual archery. The current compound bow mounting seat cannot well solve the above problems.

[0003] In summary, the above problems of the compound bow during the fatigue test have become technical problems that urgently need to be solved in the industry. Summary of the Invention:

[0004] In order to make up for the deficiencies of the prior art, the present invention provides a bow simulation pulling and damping testing machine, which solves the problem that the weight of the bowstring during the previous bow test is different from that in actual use, resulting in inaccurate test results, solves the problem that the repeated installation of arrows or projectiles during the previous bow test reduces the test efficiency, and solves the problem of buffering and damping of the counterweight during the bow test.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A bow simulation traction damping testing machine, comprising a frame. One end of the frame is provided with a bow mounting seat, the bow body of the bow is fixed on the bow mounting seat, the bowstring of the bow is connected to one end of a bowstring rope, and the other end of the bowstring rope is connected to a counterweight block. The upper and lower sides of the counterweight block are respectively slidably mounted in a counterweight block guide rail on the frame; a traction mechanism is provided on the side of the counterweight block away from the bow, and the traction mechanism is used to clamp or release the counterweight block and drive the counterweight block to reciprocate. The counterweight block pulls the bowstring through the bowstring rope to simulate the pulling and releasing actions of an arrow or a projectile on the bowstring; a damping mechanism is provided at one end of the counterweight block guide rail close to the bow, and the damping mechanism is used to buffer and damp the impact force of the counterweight block.

[0007] The traction mechanism includes a release device, which is used to clamp or release the counterweight block. The release device is mounted on a reciprocating plate, and the upper and lower sides of the reciprocating plate are respectively mounted on a reciprocating plate guide rail on the frame through linear sliders. The reciprocating plate is connected to a reciprocating plate driving mechanism mounted on the frame, and the reciprocating plate driving mechanism is used to drive the reciprocating plate to reciprocate along the reciprocating plate guide rail.

[0008] The reciprocating plate driving mechanism includes a driving wheel and a driven wheel mounted on the frame at both ends of the reciprocating plate guide rail. The driving wheel is connected to the output shaft of a driving motor, and an annular arc-tooth synchronous belt is provided between the driving wheel and the driven wheel. One side of the arc-tooth synchronous belt is fixedly connected to a synchronous belt pressing plate on the reciprocating plate.

[0009] The release device includes a release device fixed seat. One side of the release device fixed seat is provided with a jaw seat. Two symmetrically arranged jaws are respectively mounted in the jaw seat through pin shafts. The heads of the two jaws are provided with arc-shaped jaws. A compression spring is provided between the middle parts of the two jaws. A pull rod is provided between the tails of the two jaws. The pull rod includes a pull rod head and a pull rod body. The width of the pull rod head is greater than the width of the pull rod body. A cavity for accommodating the pull rod head is provided between the tails of the two jaws. The tail end of the pull rod body is connected to a release device driving mechanism.

[0010] The release device includes a release device fixed seat. One side of the release device fixed seat is provided with a jaw seat. A jaw is mounted in the jaw seat through a pin shaft. The head of the jaw is provided with an arc-shaped jaw. A compression spring is provided between the middle part of the jaw and the jaw seat. The tail of the jaw is provided with a pull rod. The pull rod includes a pull rod head and a pull rod body. The width of the pull rod head is greater than the width of the pull rod body. A cavity for accommodating the pull rod head is provided at the tail of the jaw. The tail end of the pull rod body is connected to a release device driving mechanism.

[0011] On both sides of the pull rod body on the jaw seat, there are two cylindrical pins for limiting the pull rod head. On the opposite sides of the middle parts of the two jaws, there are spring installation grooves respectively. The two ends of the compression spring are respectively arranged in the two spring installation grooves. The tails of the two jaws are respectively installed with rolling bearings, and the rolling bearings are in rolling contact with the pull rod. The release actuator includes a lead screw motor installed on the release fixed seat. The lead screw of the lead screw motor is threadedly connected with the connecting sleeve, and the connecting sleeve is fixedly connected with the pull rod body.

[0012] The damping mechanism includes a sliding block. The upper and lower sides of the sliding block are respectively installed on the sliding block guide rails on the frame through linear sliders. On one side of the sliding block close to the counterweight, a damping pad is installed. The bowstring passes through the through holes in the sliding block and the damping pad and is fixedly connected with the counterweight. On the upper and lower sides of the sliding block, there are tension springs respectively. The two ends of the tension springs are respectively fixedly connected with the tension spring seats on the sliding block and the tension spring tail seats on the frame.

[0013] One end of the sliding block guide rail close to the bow is installed with a buffer seat. The buffer seat is provided with a through hole for the bowstring to pass through. Two buffer hydraulic cylinders matched with the sliding block are installed on the buffer seat. The damping pad is made by stacking multiple layers of metal and cloth. An anti-collision plate is installed on one side of the counterweight close to the damping pad.

[0014] The counterweight matches the weight of the arrow or projectile. The counterweight and the bow are in the same vertical plane. The counterweight is fixedly connected with the center of the bowstring through the bowstring. The counterweight, the bowstring, and the center of the bowstring are in the same horizontal plane.

[0015] The bow mounting seat includes a fixing plate installed on the frame. A sliding plate is installed on the fixing plate. A floating plate is installed on the sliding plate. The bow body is fixed by a bow pressing plate and a bow pressing block on the floating plate. The sliding plate is installed on the sliding plate guide rail of the fixing plate through a linear slider. A hand-operated lead screw for driving the sliding plate to move up and down along the sliding plate guide rail is installed on the fixing plate. The four corners of the floating plate are respectively connected with the sliding plate through adjusting screws.

[0016] The present invention adopts the above scheme and has the following advantages:

[0017] By setting the counterweight, the counterweight is slidably installed in the counterweight guide rail on the frame. The counterweight is fixedly connected with the center of the bowstring through the bowstring. The counterweight replaces the previous arrow or projectile. The counterweight matches the weight of the arrow or projectile, making the counterweight of the bowstring during bow testing the same as that in actual use, improving the accuracy of the test results. The counterweight can reciprocate in the counterweight guide rail, and the counterweight can be repeatedly pulled by the release device without repeated installation, improving the test efficiency.

[0018] By setting a sliding block that cooperates with the counterweight, the upper and lower sides of the sliding block are installed on the sliding block guide rails, a vibration damping pad is installed on the sliding block, and tension springs are respectively arranged on the upper and lower sides of the sliding block. When the counterweight impacts the sliding block, on the one hand, the vibration damping pad can play a vibration damping role to protect the counterweight, and on the other hand, the sliding block can move forward a certain distance along the sliding block guide rail under the impact of the counterweight, and buffer under the tension of the tension spring, which can effectively relieve the impact force of the counterweight and play a good protective effect on the entire test device.

[0019] The sliding plate is driven to move up and down by a hand-cranked lead screw, so as to adjust the up and down position of the bow. By adjusting the adjusting screws at the four corners of the floating plate, the inclination angle of the bow in the vertical plane can be adjusted, so that the center of the bowstring is exactly aligned with the counterweight, and the angle of the counterweight during the pulling process matches the angle of the arrow or projectile during actual archery, so as to improve the accuracy of the test results. Brief Description of the Drawings:

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 2 It is a front three-dimensional structural schematic diagram of the release device of the present invention with two jaws.

[0022] Figure 3 It is a rear three-dimensional structural schematic diagram of the release device of the present invention with two jaws.

[0023] Figure 4 It is an internal structural schematic diagram of the release device of the present invention with two jaws.

[0024] Figure 5 It is an internal structural schematic diagram of the release device of the present invention with one jaw.

[0025] In the figure, 1. frame, 2. bow mounting seat, 3. bow body, 4. bowstring, 5. bowstring rope, 6. counterweight, 7. counterweight guide rail, 8. release device, 9. reciprocating plate, 10. reciprocating plate guide rail, 11. driving wheel, 12. driven wheel, 13. driving motor, 14. circular arc tooth synchronous belt, 15. release device fixing seat, 16. jaw seat, 17. pin shaft, 18. jaw, 19. compression spring, 20. pull rod head, 21. pull rod body, 22. cylindrical pin, 23. rolling bearing, 24. lead screw motor, 25. connecting sleeve, 26. sliding block, 27. sliding block guide rail, 28. vibration damping pad, 29. tension spring, 30. tension spring seat, 31. tension spring tail seat, 32. buffer seat, 33. buffer hydraulic cylinder, 34. fixing plate, 35. sliding plate, 36. floating plate, 37. bow pressing plate, 38. bow pressing block, 39. sliding plate guide rail, 40. hand-cranked lead screw, 41. adjusting screw. Detailed Embodiments:

[0026] To clearly illustrate the technical features of this solution, the present invention will be elaborated in detail below through specific embodiments and in conjunction with its accompanying drawings.

[0027] As Figure 1 shown, a bow simulation traction damping testing machine includes a frame 1. One end of the frame 1 is provided with a bow mounting seat 2. The bow body 3 of the bow is fixed on the bow mounting seat 2. One end of the bowstring 4 of the bow is connected to one end of a bowstring rope 5, and the other end of the bowstring rope 5 is connected to a counterweight 6. The upper and lower sides of the counterweight 6 are respectively slidably installed in a counterweight guide rail 7 on the frame 1; a traction mechanism is provided on the side of the counterweight 6 away from the bow. The traction mechanism is used to clamp or release the counterweight 6 and drive the counterweight 6 to reciprocate. The counterweight 6 pulls the bowstring 4 through the bowstring rope 5 to simulate the pulling and releasing actions of an arrow or a projectile on the bowstring 4; a damping mechanism is provided at one end of the counterweight guide rail 7 close to the bow. The damping mechanism is used to buffer and damp the impact force of the counterweight 6.

[0028] The traction mechanism includes a release 8. The release 8 is used to clamp or release the counterweight 6. The release 8 is installed on a reciprocating plate 9. The upper and lower sides of the reciprocating plate 9 are respectively installed on a reciprocating plate guide rail 10 on the frame 1 through linear sliders. The reciprocating plate 9 is connected to a reciprocating plate driving mechanism installed on the frame 1. The reciprocating plate driving mechanism is used to drive the reciprocating plate 9 to reciprocate along the reciprocating plate guide rail 10.

[0029] The reciprocating plate driving mechanism includes a driving wheel 11 and a driven wheel 12 installed on the frame 1 at both ends of the reciprocating plate guide rail 10. The driving wheel 11 is connected to the output shaft of a driving motor 13. An annular arc-tooth synchronous belt 14 is provided between the driving wheel 11 and the driven wheel 12. One side of the arc-tooth synchronous belt 14 is fixedly connected to a synchronous belt pressing plate on the reciprocating plate 9. When the driving motor 13 works, it can drive the arc-tooth synchronous belt 14 to rotate around the driving wheel 11 and the driven wheel 12, thereby driving the reciprocating plate 9 to move. Sensors can be arranged at the front and back of the frame 1 to position the front and back positions of the reciprocating plate 9.

[0030] The damping mechanism includes a sliding block 26. The upper and lower sides of the sliding block 26 are respectively installed on a sliding block guide rail 27 on the frame through linear sliders. A damping pad 28 is installed on the side of the sliding block 26 close to the counterweight 6. The bowstring rope 5 passes through through holes in the sliding block 26 and the damping pad 28 and is fixedly connected to the counterweight 6. Tension springs 29 are respectively provided on the upper and lower sides of the sliding block 26. The two ends of the tension springs 29 are respectively fixedly connected to a tension spring seat 30 on the sliding block 26 and a tension spring tail seat 31 on the frame 1.

[0031] One end of the slider guide rail 27 close to the bow is provided with a buffer seat 32. A through hole for the bowstring 5 to pass through is arranged in the buffer seat 32. Two buffer hydraulic cylinders 33 matched with the slider 26 are installed on the buffer seat 32. When the slider 26 touches the two buffer hydraulic cylinders 33, the two buffer hydraulic cylinders 33 can buffer the impact force of the slider 26. The damping pad 28 is made by stacking multiple layers of metal and fabric, with both flexible and rigid properties to enhance the damping protection effect. An anti-collision plate is installed on one side of the counterweight 6 close to the damping pad 28 to protect the counterweight 6 and improve the anti-impact ability.

[0032] The counterweight 6 is matched with the weight of the arrow or projectile. The counterweight 6 can be selected and replaced according to the weight of the arrow or projectile to improve the accuracy of the test results. The counterweight 6 and the bow are in the same vertical plane. The counterweight 6 is fixedly connected to the center of the bowstring 4 through the bowstring 5. The centers of the counterweight 6, the bowstring 5, and the bowstring 4 are in the same horizontal plane. In this way, the position and angle of the counterweight 6 in the vertical and horizontal directions during the pulling process can be matched with those of the arrow or projectile and the bow during actual archery, so as to improve the accuracy of the test results.

[0033] The bow mounting seat 2 includes a fixing plate 34 installed on the frame 1. A sliding plate 35 is installed on the fixing plate 34. A floating plate 36 is installed on the sliding plate 35. The bow body 3 is fixed on the floating plate 36 through a bow pressing plate 37 and a bow pressing block 38.

[0034] The sliding plate 35 is installed on the sliding plate guide rail 39 of the fixing plate 34 through a linear slider. A hand-operated lead screw 40 for driving the sliding plate 35 to move up and down along the sliding plate guide rail 39 is installed on the fixing plate 34. The four corners of the floating plate 36 are respectively connected to the sliding plate 35 through adjusting screws 41. By driving the sliding plate 35 to move up and down along the sliding plate guide rail 39 with the hand-operated lead screw 40, the up and down position of the bow can be adjusted. By adjusting the adjusting screws 41 at the four corners of the floating plate 36, the inclination angle of the bow in the vertical plane can be adjusted to make the center of the bowstring 4 completely aligned with the counterweight 6, so that the angle of the counterweight 6 during the pulling process can be matched with that of the arrow or projectile during actual archery, thereby improving the accuracy of the test results.

[0035] As Figures 2 - 4As shown, the release device 8 includes a release device fixed seat 15. On one side of the release device fixed seat 15, there is a jaw seat 16. Inside the jaw seat 16, two symmetrically arranged jaws 18 are respectively installed through a pin shaft 17. The heads of the two jaws 18 are provided with arc-shaped claws. A compression spring 19 is arranged between the middle parts of the two jaws 18. A pull rod is arranged between the tails of the two jaws 18. The pull rod includes a pull rod head 20 and a pull rod body 21. The width of the pull rod head 20 is greater than the width of the pull rod body 21. A cavity for accommodating the pull rod head 20 is arranged between the tails of the two jaws 18. The tail end of the pull rod body 21 is connected to the release device driving mechanism.

[0036] As Figure 5 As shown, the release device includes a release device fixed seat 15. On one side of the release device fixed seat 15, there is a jaw seat 16. Inside the jaw seat 16, a jaw 18 is installed through a pin shaft 17. The head of the jaw 18 is provided with an arc-shaped claw. A compression spring 19 is arranged between the middle part of the jaw 18 and the jaw seat 16. The tail of the jaw 18 is provided with a pull rod. The pull rod includes a pull rod head 20 and a pull rod body 21. The width of the pull rod head 20 is greater than the width of the pull rod body 21. A cavity for accommodating the pull rod head 20 is arranged at the tail of the jaw 18. The tail end of the pull rod body 21 is connected to the release device driving mechanism.

[0037] On both sides of the pull rod body 21 on the jaw seat 16, there are two cylindrical pins 22 for limiting the pull rod head 20 to prevent the pull rod head 20 from slipping out of the jaw seat 16 outward. A spring installation groove is arranged in the middle part of the jaw 18, and the compression spring 19 is arranged in the spring installation groove to prevent the compression spring 19 from falling off. A rolling bearing 23 is installed at the tail of the jaw 18, and the rolling bearing 23 is in rolling contact with the pull rod, which can reduce friction. The release device driving mechanism includes a lead screw motor 24 installed on the release device fixed seat 15. The lead screw of the lead screw motor 24 is in threaded connection with a connecting sleeve 25, and the connecting sleeve 25 is fixedly connected to the pull rod body 21.

[0038] Working principle of the release device 8:

[0039] When the lead screw motor 24 works, since the connecting sleeve 25 is threadedly connected to the lead screw of the lead screw motor 24, and the connecting sleeve 25 is also fixedly connected to the pull rod body 21, and the pull rod body 21 and the pull rod head 20 are restricted by the jaw seat 16 and will not rotate. Therefore, the connecting sleeve 25 will move back and forth along the lead screw of the lead screw motor 24, thereby driving the pull rod body 21 and the pull rod head 20 to move back and forth at the tail of the jaw 18 in the jaw seat 16. When the lead screw motor 24 rotates forward, the connecting sleeve 25 drives the pull rod body 21 and the pull rod head 20 to move forward. The pull rod head 20 extends into the cavity at the tail of the jaw 18. At this time, the pull rod head 20 does not contact the rolling bearing 23 at the tail of the jaw 18. Under the action of the compression spring 19, the jaw 18 rotates around the pin shaft 17, and the arc-shaped claw at the head of the jaw 18 opens, while the rolling bearing 23 at the tail of the jaw 18 contacts the pull rod body 21, realizing the opening function of the jaw 18, thereby realizing the release of the counterweight 6; when the lead screw motor 24 rotates reversely, the connecting sleeve 25 drives the pull rod body 21 and the pull rod head 20 to move backward. When the pull rod head 20 moves to the rolling bearing 23 at the tail of the jaw 18, the two cylindrical pins 22 are used for limiting to prevent the pull rod head 20 from disengaging outward. Since the width of the pull rod head 20 is greater than the width of the pull rod body 21, the pull rod head 20 will push the rolling bearing 23 outward, causing the jaws 18 to rotate around the pin shaft 17 respectively, compressing the compression spring 19 in the middle of the jaws 18, and closing the arc-shaped claws at the heads of the jaws 18, realizing the closing function of the jaws 18, thereby realizing the clamping of the counterweight 6.

[0040] Working principle of the bow simulation traction damping testing machine:

[0041] When testing the bow, first fix the bow body 3 of the bow on the bow mounting base 2 through the bow pressing plate 37 and the bow pressing block 38, and adjust the up-and-down position and inclination angle of the bow in the vertical plane through the sliding plate 35 and the floating plate 36. Then connect the bowstring 4 of the bow to one end of the bowstring rope 5, and connect the other end of the bowstring rope 5 to the counterweight 6. When drawing the bow, first drive the reciprocating plate 9 and the release 8 forward to the counterweight 6 through the reciprocating plate driving mechanism, then the release 8 acts to clamp the counterweight 6, and the reciprocating plate driving mechanism drives the reciprocating plate 9 and the release 8 backward. The release 8 drives the counterweight 6 backward, and the counterweight 6 drives the bowstring 4 to stretch backward through the bowstring rope 5 to achieve the bow-drawing state. When releasing, the two jaws 18 of the release 8 act to release the counterweight 6, and the bowstring 4 resets under its own tension. The counterweight 6 first impacts on the shock-absorbing pad 28 to protect the counterweight 6. The sliding block 26 moves forward a certain distance along the sliding block guide rail 27 under the impact of the counterweight 6, and is buffered and reset under the pulling force of the tension spring 29. When the sliding block 26 touches the two buffer hydraulic cylinders 33, the two buffer hydraulic cylinders 33 can buffer the impact force of the sliding block 26 again. Through the multiple cooperation of the shock-absorbing pad 28, the sliding block 26, the tension spring 29 and the buffer hydraulic cylinders 33, the impact force of the counterweight 6 can be effectively relieved, and a good protection effect is achieved on the entire testing device. Repeating such actions many times can achieve the fatigue testing work of the bow.

[0042] The above specific implementation manners cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art of this technology, any alternative improvement or transformation made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0043] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art of this technology.

Claims

1. A bow simulation traction damping testing machine, characterized in that: It includes a frame. One end of the frame is provided with a bow mounting seat. The bow body of the bow is fixed on the bow mounting seat. The bowstring of the bow is connected to one end of the bowstring rope, and the other end of the bowstring rope is connected to a counterweight. The upper and lower sides of the counterweight are respectively slidably mounted in the counterweight guide rails on the frame. A traction mechanism is provided on the side of the counterweight away from the bow. The traction mechanism is used to clamp or release the counterweight and drive the counterweight to reciprocate. The counterweight pulls the bowstring through the bowstring rope to simulate the pulling and releasing actions of an arrow or a projectile on the bowstring. A shock absorption mechanism is provided at one end of the counterweight guide rail close to the bow. The shock absorption mechanism is used to buffer and damp the impact force of the counterweight.

2. The bow simulation pulling shock absorption testing machine according to claim 1, wherein: The traction mechanism includes a release device. The release device is used to clamp or release the counterweight. The release device is mounted on a reciprocating plate. The upper and lower sides of the reciprocating plate are respectively mounted on the reciprocating plate guide rails on the frame through linear sliders. The reciprocating plate is connected to a reciprocating plate driving mechanism mounted on the frame. The reciprocating plate driving mechanism is used to drive the reciprocating plate to reciprocate along the reciprocating plate guide rails.

3. The bow simulation traction damping testing machine according to claim 2, characterized in that: The reciprocating plate driving mechanism includes a driving wheel and a driven wheel mounted on the frame at both ends of the reciprocating plate guide rails. The driving wheel is connected to the output shaft of a driving motor. An annular arc-tooth synchronous belt is provided between the driving wheel and the driven wheel. One side of the arc-tooth synchronous belt is fixedly connected to a synchronous belt pressing plate on the reciprocating plate.

4. The bow simulation pulling shock absorption testing machine according to claim 2, wherein: The release device includes a release device fixed seat. A jaw seat is provided on one side of the release device fixed seat. Two symmetrically arranged jaws are respectively mounted in the jaw seat through pin shafts. The heads of the two jaws are provided with arc-shaped claws. A compression spring is provided between the middle parts of the two jaws. A pull rod is provided between the tails of the two jaws. The pull rod includes a pull rod head and a pull rod body. The width of the pull rod head is greater than the width of the pull rod body. A cavity for accommodating the pull rod head is provided between the tails of the two jaws. The tail end of the pull rod body is connected to a release device driving mechanism.

5. The bow simulation traction damping testing machine according to claim 2, wherein: The release device includes a release device fixed seat. A jaw seat is provided on one side of the release device fixed seat. A jaw is mounted in the jaw seat through a pin shaft. The head of the jaw is provided with an arc-shaped claw. A compression spring is provided between the middle part of the jaw and the jaw seat. The tail of the jaw is provided with a pull rod. The pull rod includes a pull rod head and a pull rod body. The width of the pull rod head is greater than the width of the pull rod body. A cavity for accommodating the pull rod head is provided at the tail of the jaw. The tail end of the pull rod body is connected to a release device driving mechanism.

6. The bow simulation traction and vibration damping testing machine according to claim 4 or 5, characterized in that: Two cylindrical pins for limiting the pull rod head are provided on both sides of the pull rod body on the jaw seat. A spring installation groove is provided in the middle of the jaw. The compression spring is arranged in the spring installation groove. A rolling bearing is mounted at the tail of the jaw. The rolling bearing is in rolling contact with the pull rod. The release device driving mechanism includes a lead screw motor mounted on the release device fixed seat. The lead screw of the lead screw motor is in threaded connection with a connecting sleeve. The connecting sleeve is fixedly connected to the pull rod body.

7. The bow simulation traction damping testing machine according to claim 1, characterized in that: The shock absorption mechanism includes a sliding block. The upper and lower sides of the sliding block are respectively mounted on the sliding block guide rails on the frame through linear sliders. A shock absorption pad is mounted on the side of the sliding block close to the counterweight. The bowstring rope passes through the through holes in the sliding block and the shock absorption pad and is fixedly connected to the counterweight. Pulling springs are respectively provided on the upper and lower sides of the sliding block. The two ends of the pulling springs are respectively fixedly connected to the spring seats on the sliding block and the spring tail seats on the frame.

8. The bow simulation traction damping testing machine according to claim 7, characterized in that: A buffer seat is installed at one end of the slider guide rail close to the bow. A through hole for the bowstring rope to pass through is provided in the buffer seat. Two buffer hydraulic cylinders cooperating with the slider are installed on the buffer seat. The damping pad is made by stacking multiple layers of metal and fabric. An anti-collision plate is installed on one side of the counterweight block close to the damping pad.

9. The bow simulation traction and vibration damping testing machine according to claim 1, characterized in that: The counterweight block matches the weight of the arrow or projectile. The counterweight block and the bow are in the same vertical plane. The counterweight block is fixedly connected to the center of the bowstring through the bowstring rope. The counterweight block, the bowstring rope, and the center of the bowstring are in the same horizontal plane.

10. The bow simulation traction damping testing machine according to claim 1, characterized in that: The bow mounting seat includes a fixing plate installed on the frame. A sliding plate is installed on the fixing plate. A floating plate is installed on the sliding plate. The bow body is fixed by a bow pressing plate and a bow pressing block on the floating plate. The sliding plate is installed on the sliding plate guide rail of the fixing plate through a linear slider. A hand-operated lead screw for driving the sliding plate to move up and down along the sliding plate guide rail is installed on the fixing plate. The four corners of the floating plate are respectively connected to the sliding plate through adjusting screws.

Images