Connecting rod aligning and clamping device for split Hopkinson equipment and use method of connecting rod aligning and clamping device

Abstract

The invention belongs to the technical field of Hopkinson bar experiment and application. In order to solve the problems that an existing device cannot be suitable for any rod diameter and friction is large, the split Hopkinson equipment connecting rod alignment clamping device and the using method are provided, and the split Hopkinson equipment connecting rod alignment clamping device comprises a base, a positioning chuck assembly, a rail mechanism, a connecting rod mechanism, a locking mechanism and an induction control mechanism; the positioning chuck assembly comprises two first guide positioning chucks, second guide positioning chucks are arranged in the first guide positioning chucks, the connecting rod mechanism drives the two first guide positioning chucks to move in the same direction or away from each other in the extending direction of the rail mechanism so as to clamp or release a rod piece, and the second guide positioning chucks are independently driven to clamp an impact piece. The locking mechanism clamps or releases the connecting rod mechanism, the induction control mechanism receives signals to control the base to be horizontal and the rod piece to be centered, the device is suitable for various rod diameters and has universality, and friction between the first guiding and positioning chuck and the rod piece and friction between the second guiding and positioning chuck and the impacting piece are reduced.

Description

Technical Field

[0001] The invention belongs to the field of Hopkinson bar experimental technology and application technology, and in particular relates to a separate Hopkinson device connecting rod alignment clamping device and a use method thereof. Background Art

[0002] In the fields of aviation, aerospace, automobile, transportation, packaging, etc., engineering materials will encounter impact loading such as high-speed collision and explosion, and the mechanical properties of each material under dynamic load are different from those under static load. The Hopkinson bar is a physical property testing instrument used in the fields of mechanics, basic disciplines of engineering and technology science, materials science, and mechanical engineering. The Hopkinson tensile test can accurately obtain the material stress-strain curve, which is a commonly used dynamic test method.

[0003] In the existing split Hopkinson bar device system structure, in order to meet the high loading rate and high strain rate, the test requires that the incident rod and the transmission rod are several meters long. The driving rod, the incident rod, and the transmission rod are prone to bending under the action of the impact load, resulting in the rods not being on the same axis. Therefore, an impact piece is set at the end where the transmission rod contacts the incident rod, but it is difficult to align the impact piece with the transmission rod, and the resulting system error has a great impact on the reliability and accuracy of the test results. In order to ensure the horizontal alignment between the driving rod and the incident rod, and between the incident rod and the transmission rod, the existing alignment devices include nylon sleeves, linear bearings, and bearing retainers. Although these alignment devices are widely used, they have the following problems: nylon sleeves, linear bearings, and bearing retainers are not interchangeable under different rod diameters, and have low applicability; and during the test, the nylon sleeves, bearing retainers, and each rod generate friction, resulting in increased axial sliding resistance and causing system errors; in the high loading rate and high strain rate test environment, the use of linear bearings will generate vibration and noise, and measures need to be taken to reduce the impact of vibration and noise on the test results, requiring more frequent maintenance. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a separate Hopkinson equipment connecting rod alignment clamping device and a use method thereof which is suitable for any rod diameter and reduces friction.

[0005] The first aspect of the present invention provides a split Hopkinson equipment connecting rod alignment clamping device, comprising: Pedestal; A positioning chuck assembly, the positioning chuck assembly comprising two first guide positioning chucks for clamping the rod of the split Hopkinson device, the clamping ends of the two first guide positioning chucks are both provided with a first anti-friction mechanism, the interiors of the two first guide positioning chucks are both provided with a driving member and a second guide positioning chuck for clamping the impact member of the split Hopkinson device, the second guide positioning chuck comprises a connecting rod and a second column head, the clamping end of the second column head is provided with a second anti-friction mechanism, the end of the connecting rod away from the second column head is connected to the driving member, and the driving member drives the second guide positioning chuck to reciprocate; A track mechanism, wherein the track mechanism is arranged on the base; A connecting rod mechanism, which is arranged inside the track mechanism and is used to connect the two first guide positioning chucks. The connecting rod mechanism is driven to drive the two first guide positioning chucks to move toward or away from each other along the extension direction of the track mechanism. A locking mechanism, wherein the locking mechanism is arranged on the outer surface of the track mechanism, and the locking mechanism is driven to drive the track mechanism to clamp or release, so as to clamp or release the connecting rod mechanism; The induction control mechanism includes a plurality of inclination sensors, a first position sensor, a second position sensor and a control device. The inclination sensor is arranged on the base to transmit the inclination signal of the base. The first position sensor is arranged on the first guide positioning chuck to transmit the position signal of the horizontal movement of the first guide positioning chuck. The second position sensor is arranged on the second guide positioning chuck to transmit the position signal of the horizontal movement of the second guide positioning chuck. The control device receives and feeds back the inclination signal and the position signal.

[0006] Optionally, the first guiding and positioning chuck includes a sliding portion and a first column head, two ends of the sliding portion are respectively connected to the connecting rod mechanism and the first column head, and the first anti-friction mechanism and the first position sensor are both arranged at the clamping end of the first column head.

[0007] Optionally, the clamping end of the first column head is provided with an opening suitable for the second guiding and positioning clamping head to extend out; The clamping end of the first column head and the clamping end of the second column head are both V-shaped.

[0008] Optionally, the track mechanism includes two first transverse rails, two clamping plates and two second transverse rails which are respectively arranged opposite to each other, the first transverse rail is hingedly connected to the clamping plate, and the two second transverse rails and the two first transverse rails are symmetrically arranged along the longitudinal midline of the base; First grooves adapted to the sliding part are disposed oppositely on the inner sides of the two first transverse rails, and second grooves adapted to the sliding part are disposed oppositely on the inner sides of the two second transverse rails.

[0009] Optionally, the induction control mechanism also includes a first limit sensor and a second limit sensor. The first limit sensor and the second limit sensor, which are respectively arranged on the first cross rail and the second cross rail, are both connected to the input end of the control device. The first limit sensor is arranged at the end of the first groove, and the second limit sensor is arranged at the end of the second groove. The first limit sensor and the second limit sensor respectively transmit displacement signals of the first guide positioning chuck connected thereto.

[0010] Optionally, the connecting rod mechanism includes a first connecting rod, an active rod, a long connecting rod, a fork-shaped connecting rod and a second connecting rod connected in sequence; The active rod is arranged perpendicular to the base and between the two clamping plates. A first gear is arranged on one side of the two clamping plates facing the active rod, and a second gear meshing with the first gear is arranged on both sides of the active rod facing the two clamping plates. The connecting ends of the two first guide positioning chucks are respectively connected to the first connecting rod and the second connecting rod. The first connecting rod is arranged between the two first transverse rails, and the second connecting rod and the fork-shaped connecting rod are arranged between the two second transverse rails.

[0011] Optionally, the locking mechanism comprises a pressing handle, a locking shaft and a pin, and the locking shaft passes through the two clamping plates and the active rod; The pressing handle includes a connected cam and a rotating handle. The cam is set at one end of the locking shaft through the pin shaft and can rotate along the pin shaft. The pin shaft is set away from the center of the cam. The rotating handle is driven to drive the cam to rotate along the pin shaft to drive the two clamping plates to clamp or release.

[0012] Optionally, the base includes a bottom plate and four hoof feet, and both ends of the bottom plate are provided with slots suitable for the connecting rod mechanism to pass through; The shoe foot comprises a shoe foot seat, a threaded rod and a shockproof pad. The four corners of the bottom plate are provided with threaded holes. The four threaded rods are respectively threadedly connected with the four threaded holes. The shoe foot seat is arranged at the bottom of the threaded rod, and the shockproof pad is arranged at the bottom of the shoe foot seat. A third groove is formed at the top of the threaded rod. The number of the inclination sensors is the same as the number of the threaded rods. Four inclination sensors are respectively disposed in four third grooves.

[0013] Optionally, the first anti-friction mechanism includes a first retaining frame and a plurality of first balls, the plurality of first balls are arranged in the first retaining frame at intervals, and the plurality of first balls are in contact with the rod; The second anti-friction mechanism includes a second retaining frame and a plurality of second balls. The plurality of second balls are arranged in the second retaining frame at intervals, and the plurality of second balls are in contact with the impact member.

[0014] A second aspect of the present invention provides a method for using a split Hopkinson device connecting rod alignment clamping device, which is based on a split Hopkinson device connecting rod alignment clamping device as described in any one of the above items. The rod member of the split Hopkinson device includes a driving rod, an incident rod and a transmission rod arranged in sequence and at intervals. The driving rod drives the incident rod to move toward the transmission rod. An impact member is arranged between the incident rod and the transmission rod. The method for using the split Hopkinson device includes the following steps: S1, setting two separate Hopkinson device connecting rod alignment clamping devices at the position between the driving rod and the incident rod, and at the position between the incident rod and the transmission rod respectively; S2, adjusting the base to keep the base horizontal according to the tilt signal of the base fed back to the control device by the tilt sensor; S3, rotating the connecting rod mechanisms on the two separate Hopkinson device connecting rod alignment clamping devices, respectively driving the two first guide positioning clamps on the two separate Hopkinson device connecting rod alignment clamping devices to move toward the driving rod and the incident rod, and the incident rod and the transmission rod, respectively, adjusting the connecting rod mechanism according to the position signal of the horizontal movement of the two first guide positioning clamps fed back to the control device by the first position sensor, so as to realize the centering of the driving rod and the incident rod, and the centering of the incident rod and the transmission rod, and after the centering, driving the locking mechanism to lock the connecting rod mechanism; S4. The control device on the separate Hopkinson device connecting rod alignment clamping device located between the incident rod and the transmission rod controls the driving of the driving member to drive the two second guide positioning clamps to move toward the impact member. According to the position signal of the horizontal movement of the two second guide positioning clamps fed back by the second position sensor, the control device adjusts the driving member to drive the two second guide positioning clamps to move toward the impact member so that the impact member is centered with the transmission rod. After the centering, an external force is applied to the impact member. The impact member moves toward the transmission rod driven by the second anti-friction mechanism and is fixed to the end of the transmission rod. The control device controls the retraction of the driving member to drive the two second guide positioning clamps to move away from the impact member.

[0015] Compared with the prior art, the technical solution provided by the embodiment of the present invention has the following beneficial effects: The embodiment of the present invention provides a split-type Hopkinson equipment connecting rod alignment clamping device and a use method. The device is connected to the connecting rod mechanism by setting two first guide positioning clamps and is set inside the track mechanism. The two first guide positioning clamps can move toward or away from each other along the extension direction of the track mechanism through the drive of the connecting rod mechanism. According to the position signal of the horizontal movement of the first guide positioning clamps fed back by the first position sensor, the connecting rod mechanism can be continuously adjusted so that the two first guide positioning clamps move to achieve preliminary alignment of the two rods, and the first anti-friction mechanism contacts the rod, thereby reducing the friction generated between the first guide positioning clamps and the rod, thereby improving the accuracy of the experimental results. The driving member can drive the two second guide positioning clamps to move toward the impact member. According to the position signal of the horizontal movement of the second guide positioning clamps fed back by the second position sensor, the control device controls the driving member to make the two second guide positioning clamps move until the impact member and the rod member are aligned, thereby realizing the integration of the impact member clamping and the rod member centering. Moreover, the two first guide positioning clamps move toward each other to clamp the rod member, and the two second guide positioning clamps move toward each other to clamp the impact member, thereby realizing the clamping of rod members and impact members of any rod diameter, thereby improving the applicability of the device. Of course, this device is suitable for the centering of the incident rod and the transmission rod, and is also suitable for the centering of the driving rod and the incident rod, and has universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 It is a structural schematic diagram of the split-type Hopkinson equipment connecting rod alignment clamping device according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a base according to an embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged view of the middle A; Figure 4 A schematic diagram of the structure of the connection between the locking mechanism and the track mechanism according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of the second cross rail according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of the second guiding and positioning chuck according to an embodiment of the present invention; Figure 7 It is a structural schematic diagram of the connection between the connecting rod mechanism and the first guide positioning chuck according to an embodiment of the present invention; Figure 8 for Figure 7 A partial enlarged view of point B in the middle.

[0019] Among them, 1, base; 2, shoe foot; 3, bottom plate; 4, threaded rod; 5, shockproof pad; 6, shoe foot seat; 7, inclination sensor; 8, first cross rail; 8.1, first groove; 9, clamping plate; 10, second cross rail; 10.1, second groove; 11, hinge; 12, first limit sensor; 13, second limit sensor; 14, pressure handle; 15, locking shaft; 16, pin shaft; 17, first gear; 18, angle iron; 19, first guide positioning chuck; 19.1, sliding part; 19.2, first column head; 19.3, The first anti-friction mechanism; 19.31, the first retaining frame; 19.32, the first ball; 20, the first position sensor; 21, the second position sensor; 22, the second guide positioning chuck; 22.1, the connecting rod; 22.2, the second column head; 22.3, the second anti-friction mechanism; 22.31, the second retaining frame; 22.32, the second ball; 23, the driving member; 24, the control device; 25, the active rod; 26, the second gear; 27, the first connecting rod; 28, the long connecting rod; 29, the fork-shaped connecting rod; 30, the second connecting rod. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figures 1 to 8 As shown, the first aspect of this embodiment provides a split-type Hopkinson equipment connecting rod alignment clamping device, including a base 1, a positioning clamping head assembly, a track mechanism, a connecting rod mechanism, a locking mechanism and an induction control mechanism.

[0023] The positioning chuck assembly includes two first guide positioning chucks 19 for clamping the rod of the split Hopkinson device, the clamping ends of the two first guide positioning chucks 19 are both provided with a first anti-friction mechanism 19.3, the interiors of the two first guide positioning chucks 19 are both provided with a driving member 23 and a second guide positioning chuck 22 for clamping the impact member of the split Hopkinson device, the second guide positioning chuck 22 includes a connecting rod 22.1 and a second column head 22.2, the clamping end of the second column head 22.2 is provided with a second anti-friction mechanism 22.3, the end of the connecting rod 22.1 away from the second column head 22.2 is connected to the driving member 23, and the driving member 23 drives the second guide positioning chuck 22 to reciprocate; the track mechanism is arranged on the base 1; the connecting rod mechanism is arranged inside the track mechanism, and is used to connect the two first guide positioning chucks The first guide positioning chuck 19 drives the connecting rod mechanism to drive the two first guide positioning chucks 19 to move toward or away from each other along the extension direction of the track mechanism; the locking mechanism is arranged on the outer surface of the track mechanism, drives the locking mechanism, drives the track mechanism to clamp or release, so as to clamp or release the connecting rod mechanism; the induction control mechanism includes an inclination sensor 7, a first position sensor 20, a second position sensor 21 and a control device 24, the inclination sensor 7 is arranged on the base 1, and is used to transmit the inclination signal of the base 1, the first position sensor 20 is arranged on the first guide positioning chuck 19, and is used to transmit the position signal of the horizontal movement of the first guide positioning chuck 19, the second position sensor 21 is arranged on the second guide positioning chuck 22, and is used to transmit the position signal of the horizontal movement of the second guide positioning chuck 22, and the control device 24 receives and feeds back the inclination signal and the position signal.

[0024] Specifically, the two first guide positioning chucks 19 are connected to the connecting rod mechanism and are arranged inside the track mechanism. The two first guide positioning chucks 19 can move toward or away from each other along the extension direction of the track mechanism through the drive of the connecting rod mechanism. When the two first guide positioning chucks 19 move toward each other, the connecting rod mechanism is continuously adjusted according to the position signal of the horizontal movement of the first guide positioning chuck 19 fed back to the control device 24 by the first position sensor 20, so that the two first guide positioning chucks 19 are moved to achieve preliminary alignment of the two rods, and the first anti-friction mechanism 19.3 contacts the rod, thereby reducing the friction generated between the first guide positioning chuck 19 and the rod, thereby improving the accuracy of the experimental results, and starting the driving member 23 to drive the two second guide positioning chucks 22 to reciprocate. When the driving member 23 drives the two second guide positioning chucks 22 to reciprocate, When the positioning chucks 22 move toward each other, the control device 24 controls the driving member 23 according to the position signal of the horizontal movement of the second guide positioning chuck 22 fed back to the control device 24 by the second position sensor 21, so that the two second guide positioning chucks 22 move until the impact member and the rod are aligned, and the second anti-friction mechanism 22.3 contacts the impact member, thereby reducing the friction generated between the second guide positioning chucks 22 and the impact member, thereby realizing the integration of the impact member clamping and the rod member alignment, and by the two first guide positioning chucks 19 moving toward each other to clamp the rod, and the two second guide positioning chucks 22 moving toward each other to clamp the impact member, it is possible to clamp rods and impact members of any rod diameter, thereby improving the applicability of the device. Of course, this device is suitable for the alignment of the incident rod and the transmission rod, and is also suitable for the alignment of the drive rod and the incident rod, and has universality.

[0025] Further, see Figure 7 and Figure 8 As shown, the first guide positioning chuck 19 includes a sliding part 19.1 and a first column head 19.2, the two ends of the sliding part 19.1 are respectively connected to the connecting rod mechanism and the first column head 19.2, and the first anti-friction mechanism 19.3 and the first position sensor 20 are both arranged at the clamping end of the first column head 19.2. Specifically, the first anti-friction mechanism 19.3 includes a first retaining frame 19.31 and a plurality of first balls 19.32, the first retaining frame 19.31 is embedded on the clamping end of the first column head 19.2, and the plurality of first balls 19.32 are arranged in the first retaining frame 19.31 at intervals to prevent the plurality of first balls 19.32 from colliding and rubbing with each other during operation. When the two first column heads 19.2 move toward each other until they contact the rod, the plurality of first balls 19.32 contact the rod, thereby reducing the friction between the first column head 19.2 and the rod, and at the same time, the first balls 19.32 are arranged to facilitate the movement of the rod.

[0026] Reference Figures 6 to 8As shown, the clamping end of the first column head 19.2 is provided with an opening suitable for the second guide positioning chuck 22 to extend out; the clamping end of the first column head 19.2 and the clamping end of the second column head 22.2 are both V-shaped. Specifically, by setting the clamping end of the first column head 19.2 and the clamping end of the second column head 22.2 to be V-shaped, the two first column heads 19.2 can be adapted to clamp the cylindrical rod, and the two second column heads 22.2 are suitable for clamping the circular impact member, thereby improving the stability of the rod and the impact member during the processing process, and the impact member can be supported in both the axial and radial directions. By setting an opening on the clamping end of the first column head 19.2, the second guide positioning chuck 22 can be completely retracted into the first guide positioning chuck 19 without affecting the use of the first guide positioning chuck 19.

[0027] Reference Figure 4 and Figure 5 As shown, the track mechanism includes two first cross rails 8, two clamping plates 9 and two second cross rails 10 which are arranged opposite to each other, the first cross rail 8 is hingedly connected to the clamping plate 9, and the two second cross rails 10 and the two first cross rails 8 are symmetrically arranged along the longitudinal center line of the base 1; the inner sides of the two first cross rails 8 are oppositely provided with first grooves 8.1 which are adapted to the sliding part 19.1, and the inner sides of the two second cross rails 10 are oppositely provided with second grooves 10.1 which are adapted to the sliding part 19.1. Specifically, the two first transverse rails 8 are symmetrically arranged along the horizontal midline of the base 1, and the two second transverse rails 10 are symmetrically arranged along the horizontal midline of the base 1. The first transverse rail 8 and the second transverse rail 10 are in the same horizontal plane and are symmetrically arranged about the longitudinal midline of the base 1. There is a certain distance between the first transverse rail 8 and the second transverse rail 10. The first transverse rail 8 and the second transverse rail 10 are connected to the base 1 through angle irons 18, and are fixed at the connection points with hexagonal bolts. The sliding parts 19.1 of the first guide positioning chuck 19 are respectively connected to the first concave The groove 8.1 and the second groove 10.1 are adapted to each other so that the sliding part 19.1 can move along the first groove 8.1 and the second groove 10.1, that is, the first cross rail 8 and the second cross rail 10 respectively guide the two corresponding first guide positioning chucks 19, and a circular hole is provided at the end of the sliding part 19.1 for connecting with the connecting rod mechanism. The thickness after connecting with the connecting rod mechanism needs to be less than the thickness of the sliding part 19.1, specifically, not exceeding the thickness of the groove formed by the sliding part 19.1, so as not to affect the normal movement of the sliding part 19.1.

[0028] To ensure the normal movement of the first guide positioning chuck 19, refer to Figure 4 and Figure 5As shown, the sensing control mechanism also includes a first limit sensor 12 and a second limit sensor 13, which are respectively arranged on the first cross rail 8 and the second cross rail 10 and are both connected to the input end of the control device 24. The first limit sensor 12 is arranged at the end of the first groove 8.1, and the second limit sensor 13 is arranged at the end of the second groove 10.1. The first limit sensor 12 and the second limit sensor 13 respectively transmit the displacement signal of the first guide positioning chuck 19 connected thereto. Specifically, the first limit sensor 12 and the second limit sensor 13 are respectively used to sense the position of the first guide positioning chuck 19 moving along the first cross rail 8 and the second cross rail 10. When the first guide positioning chuck 19 moves to the limit position, the first limit sensor 12 and the second limit sensor 13 send a signal to the control device 24 to manually stop the rotation of the connecting rod mechanism so that the first guide positioning chuck 19 stops moving.

[0029] Reference Figure 7 As shown, the connecting rod mechanism includes a first connecting rod 27, an active rod 25, a long connecting rod 28, a fork-shaped connecting rod 29 and a second connecting rod 30 connected in sequence; the active rod 25 is arranged perpendicular to the base 1 and is arranged between the two clamping plates 9, and the two clamping plates 9 are provided with a first gear 17 on the side facing the active rod 25, and the active rod 25 is provided with a second gear 26 meshing with the first gear 17 on both sides facing the two clamping plates 9; the connecting ends of the two first guide positioning chucks 19 are respectively connected to the first connecting rod 27 and the second connecting rod 30, the first connecting rod 27 is arranged between the two first cross rails 8, and the second connecting rod 30 and the fork-shaped connecting rod 29 are arranged between the two second cross rails 10. Specifically, the first gear 17 is meshed with the second gear 26, so that the active rod 25 will not rotate arbitrarily between the two clamping plates 9 and can only rotate when subjected to external force. One end of the first connecting rod 27 is connected to the active rod 25, and the other end is connected to the first guide positioning clamp placed between the two first cross rails 8. One end of the second connecting rod 30 is connected to the fork-shaped connecting rod 29, and the other end is connected to the first guide positioning clamp placed between the two second cross rails 10. The long connecting rod 28 is used to connect the active rod 25 and the fork-shaped connecting rod 29, and rotate the active rod 25. When the active rod 25 rotates clockwise, the first connecting rod 27 and the second connecting rod 30 drive the two first guide positioning clamps 19 to move toward each other. When the active rod 25 rotates counterclockwise, the first connecting rod 27 and the second connecting rod 30 drive the two first guide positioning clamps 19 to move away from each other.

[0030] Further, see Figure 4As shown, the locking mechanism includes a pressing handle 14, a locking shaft 15 and a pin 16. The locking shaft 15 passes through the two clamping plates 9 and the active rod 25. The pressing handle 14 includes a cam and a rotating handle connected to each other. The cam is set at one end of the locking shaft 15 through the pin 16 and can rotate along the pin 16. The pin 16 is set away from the center of the cam. The rotating handle is driven to drive the cam to rotate along the pin 16 to drive the two clamping plates 9 to clamp or release. Specifically, the active rod 25 is penetrated on the locking shaft 15, and the locking shaft 15 passes through the two clamping plates 9. The clamping plate 9 is connected to the first cross rail 8 by a hinge 11. One end of the locking shaft 15 extends out of the clamping plate 9 on one side, and a through hole is opened at the protruding end, so that the pin shaft 16 passes through the through hole to connect the pressing handle 14 and the locking shaft 15. The pin shaft 16 is set to deviate from the center of the cam, so that when the cam rotates, the distance between the center of the pin shaft 16 and the clamping plate 9 changes accordingly. Initially, the rotating handle of the pressing handle 14 is set close to the clamping plate 9. At this time, the distance between the two clamping plates 9 is the largest, and the clamping plate 9 is in a released state with respect to the active rod 25. When the rotating handle is pushed to rotate to the position close to the clamping plate 9 When vertical, the distance between the two clamping plates 9 is the smallest. During this rotation process, the distance from the center of the pin shaft 16 to the clamping plate 9 gradually increases, and the distance between the two clamping plates 9 gradually decreases. The two clamping plates 9 clamp the active rod 25, so that the connecting rod mechanism no longer rotates, and the two first guide positioning chucks 19 no longer move. Continue to push the rotating handle until the rotating handle fits with the clamping plate 9 again. During this rotation process, the distance from the center of the pin shaft 16 to the clamping plate 9 gradually decreases, and the distance between the two clamping plates 9 gradually increases. The two clamping plates 9 gradually release the active rod 25, so that the two first guide positioning chucks 19 can continue to move driven by the connecting rod mechanism.

[0031] Reference Figure 2 and Figure 3As shown, the base 1 includes a bottom plate 3 and four shoe feet 2. Both ends of the bottom plate 3 are provided with slots suitable for the connecting rod mechanism to pass through. The shoe feet 2 include a shoe foot seat 6, a threaded rod 4 and a shock-proof pad 5. Threaded holes are provided on the four corners of the bottom plate 3. The four threaded rods 4 are respectively threadedly connected to the four threaded holes. The shoe foot seat 6 is arranged at the bottom of the threaded rod 4. The shock-proof pad 5 is arranged at the bottom of the shoe foot seat 6. A third groove is provided on the top of the threaded rod 4. The number of inclination sensors 7 is the same as the number of threaded rods 4. The four inclination sensors 7 are respectively arranged in the four third grooves. Specifically, the base 1 is used to support and fix the various components of the separate Hopkinson equipment connecting rod alignment clamping device. Slots are provided at both ends of the base plate 3. The long connecting rod 28 is arranged at the bottom of the base plate 3. The active rod 25 and the fork-shaped connecting rod 29 are respectively connected to the long connecting rod 28 through two slots. The shoe foot 2 has the function of shock-proof support. By setting the threaded rod 4, the height of the base plate 3 can be freely adjusted. The shoe foot seat 6 increases the contact area between the threaded rod 4 and the ground, and improves the stability of the base 1. A shock-proof pad 5 is arranged at the bottom of the shoe foot seat 6 to prevent vibration, further improving the stability of the base 1. Four inclination sensors 7 are provided, and are respectively arranged in the third grooves at the top of the four threaded rods 4, for feeding back the relative position of the inclination sensor 7 to the control device to monitor whether the base plate 3 is in a horizontal state.

[0032] Reference Figure 6 As shown, the second anti-friction mechanism 22.3 includes a second retaining frame 22.31 and a plurality of second balls 22.32, wherein the plurality of second balls 22.32 are arranged at intervals in the second retaining frame 22.31, and the plurality of second balls 22.32 are in contact with the impact member. Specifically, the second retaining frame 22.31 is embedded in the clamping end of the second column head 22.2, and the plurality of second balls 22.32 are arranged at intervals in the second retaining frame 22.31, so as to prevent the plurality of second balls 22.32 from colliding and rubbing with each other during operation. When the two second column heads 22.2 move toward each other until they are in contact with the impact member, the plurality of second balls 22.32 are in contact with the impact member, thereby reducing the friction between the second column heads 22.2 and the impact member, and the second balls 22.32 are arranged to facilitate the movement of the impact member.

[0033] The second aspect of the present embodiment provides a method for using a split Hopkinson device connecting rod alignment clamping device, which is completed based on the above-mentioned split Hopkinson device connecting rod alignment clamping device. The rod member of the split Hopkinson device includes a driving rod, an incident rod and a transmission rod arranged in sequence and at intervals. The driving rod drives the incident rod to move toward the transmission rod. An impact member is arranged between the incident rod and the transmission rod. Of course, the driving rod can also be called an impact rod. The method for using the device includes the following steps: S1. Two separate Hopkinson device connecting rod alignment clamping devices are respectively set at the position between the driving rod and the incident rod, and at the position between the incident rod and the transmission rod, so as to simultaneously complete the alignment of the driving rod and the incident rod, and the alignment of the incident rod and the transmission rod; S2, according to the tilt signal of the base 1 fed back to the control device 24 by the tilt sensor 7, adjusting the base 1 so that the base 1 remains horizontal, specifically adjusting the threaded rod 4 to adjust the height of the bottom plate 3; S3, rotate the connecting rod mechanism on the two separate Hopkinson equipment connecting rod alignment clamping devices, respectively drive the two first guide positioning clamps 19 on the two separate Hopkinson equipment connecting rod alignment clamping devices to move toward the driving rod and the incident rod, the incident rod and the transmission rod respectively, according to the position signal of the horizontal movement of the two first guide positioning clamps 19 fed back to the control device 24 by the first position sensor 20, adjust the connecting rod mechanism to realize the centering of the driving rod and the incident rod, and the incident rod and the transmission rod. After the centering, drive the locking mechanism to lock the connecting rod mechanism. Specifically, rotate the active rods 25 in the two devices. When the active rods 25 rotate clockwise, the first A connecting rod 27 and a second connecting rod 30 drive the two first guide positioning chucks 19 to move toward each other. According to the position signal of the horizontal movement of the two first guide positioning chucks 19 fed back to the control device 24 by the first position sensor 20, the active rod 25 is continuously rotated, so that the two first guide positioning chucks 19 continue to move until the driving rod and the incident rod are aligned, and the incident rod and the transmission rod are aligned. After the alignment, the rotating handles in the two devices are pushed to rotate to be perpendicular to the clamping plate 9. At this time, the distance between the two clamping plates 9 is the smallest, and the two clamping plates 9 clamp the active rod 25, so that the connecting rod mechanism no longer rotates, and the two first guide positioning chucks 19 no longer move. S4. The control device 24 on the separate Hopkinson device connecting rod alignment clamping device located between the incident rod and the transmission rod controls the driving member 23 to drive, drive the two second guide positioning clamps 22 to move toward the impact member, and according to the position signal of the horizontal movement of the two second guide positioning clamps 22 fed back by the second position sensor 21, the control device 24 adjusts the driving member 23 to drive the two second guide positioning clamps 22 to move toward the impact member, so that the impact member and the transmission rod are centered. After the centering, an external force is applied to the impact member, and the impact member moves toward the transmission rod under the drive of the second anti-friction mechanism 22.3, specifically, the impact member moves toward the transmission rod under the drive of the second ball 22.32 and is fixed to the end of the transmission rod. The control device 24 controls the driving member 23 to retract, and drives the two second guide positioning clamps 22 to move away from the impact member.

[0034] Among them, the separate Hopkinson device connecting rod alignment clamping device used for centering the incident rod and the transmission rod is not taken out after centering until it is taken out after the test is completed, while the separate Hopkinson device connecting rod alignment clamping device used for centering the driving rod and the incident rod is taken out after centering.

[0035] It can be seen that the split Hopkinson device connecting rod alignment clamping device provided in this embodiment is suitable for the centering of the incident rod and the transmission rod of the split Hopkinson device, and is also suitable for the centering of the driving rod and the incident rod of the split Hopkinson device. It is universal and there is no need to design two centering devices, nor is there any need to deliberately distinguish between the two centering devices.

[0036] It should be noted that, in this article, relational terms such as "first" and "second" 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

Claims

1. A split Hopkinson equipment connecting rod alignment clamping device, characterized in that: include: Base (1); A positioning chuck assembly, the positioning chuck assembly comprising two first guide positioning chucks (19) for clamping a rod of the split Hopkinson device, the clamping ends of the two first guide positioning chucks (19) are both provided with a first anti-friction mechanism (19.3), the interiors of the two first guide positioning chucks (19) are both provided with a driving member (23) and a second guide positioning chuck (22) for clamping an impact member of the split Hopkinson device, the second guide positioning chuck (22) comprising a connecting rod (22.1) and a second column head (22.2), the clamping end of the second column head (22.2) is provided with a second anti-friction mechanism (22.3), the end of the connecting rod (22.1) away from the second column head (22.2) is connected to the driving member (23), and the driving member (23) drives the second guide positioning chuck (22) to reciprocate; A track mechanism, the track mechanism being arranged on the base (1); a connecting rod mechanism, the connecting rod mechanism being arranged inside the track mechanism and being used to connect the two first guide positioning chucks (19), and driving the connecting rod mechanism to drive the two first guide positioning chucks (19) to move towards or away from each other along the extension direction of the track mechanism; A locking mechanism, wherein the locking mechanism is arranged on the outer surface of the track mechanism, and the locking mechanism is driven to drive the track mechanism to clamp or release, so as to clamp or release the connecting rod mechanism; The induction control mechanism comprises an inclination sensor (7), a first position sensor (20), a second position sensor (21) and a control device (24), wherein the inclination sensor (7) is arranged on the base (1) and is used to transmit an inclination signal of the base (1), the first position sensor (20) is arranged on the first guide positioning chuck (19) and is used to transmit a position signal of horizontal movement of the first guide positioning chuck (19), the second position sensor (21) is arranged on the second guide positioning chuck (22) and is used to transmit a position signal of horizontal movement of the second guide positioning chuck (22), and the control device (24) receives and feeds back the inclination signal and the position signal.

2. A split Hopkinson equipment connecting rod alignment clamping device according to claim 1, characterized in that: The first guide positioning chuck (19) comprises a sliding portion (19.1) and a first column head (19.2), the two ends of the sliding portion (19.1) are respectively connected to the connecting rod mechanism and the first column head (19.2), and the first anti-friction mechanism (19.3) and the first position sensor (20) are both arranged at the clamping end of the first column head (19.2).

3. A split Hopkinson equipment connecting rod alignment clamping device according to claim 2, characterized in that: An opening suitable for the second guiding and positioning clamp (22) to extend out is provided on the clamping end of the first column head (19.2); The clamping end of the first column head (19.2) and the clamping end of the second column head (22.2) are both V-shaped.

4. A split Hopkinson equipment connecting rod alignment clamping device according to claim 2, characterized in that: The track mechanism comprises two first transverse rails (8), two clamping plates (9) and two second transverse rails (10) which are arranged opposite to each other, the first transverse rail (8) is hingedly connected to the clamping plates (9), and the two second transverse rails (10) and the two first transverse rails (8) are symmetrically arranged along the longitudinal midline of the base (1); First grooves (8.1) adapted to the sliding portion (19.1) are arranged oppositely on the inner sides of the two first transverse rails (8), and second grooves (10.1) adapted to the sliding portion (19.1) are arranged oppositely on the inner sides of the two second transverse rails (10).

5. A split Hopkinson equipment connecting rod alignment clamping device according to claim 4, characterized in that: The induction control mechanism further comprises a first limit sensor (12) and a second limit sensor (13). The first limit sensor (12) and the second limit sensor (13) are respectively arranged on the first cross rail (8) and the second cross rail (10), and are both connected to the input end of the control device (24). The first limit sensor (12) is arranged at the end of the first groove (8.1), and the second limit sensor (13) is arranged at the end of the second groove (10.1). The first limit sensor (12) and the second limit sensor (13) respectively transmit displacement signals of the first guide positioning chuck (19) connected thereto.

6. A split Hopkinson equipment connecting rod alignment clamping device according to claim 4, characterized in that: The connecting rod mechanism comprises a first connecting rod (27), an active rod (25), a long connecting rod (28), a fork-shaped connecting rod (29), and a second connecting rod (30) which are connected in sequence; The active rod (25) is arranged perpendicular to the base (1) and between the two clamping plates (9); a first gear (17) is arranged on one side of the two clamping plates (9) facing the active rod (25); and a second gear (26) meshing with the first gear (17) is arranged on both sides of the active rod (25) facing the two clamping plates (9); The connecting ends of the two first guide positioning clamps (19) are respectively connected to the first connecting rod (27) and the second connecting rod (30); the first connecting rod (27) is arranged between the two first cross rails (8); and the second connecting rod (30) and the fork-shaped connecting rod (29) are arranged between the two second cross rails (10).

7. A split Hopkinson equipment connecting rod alignment clamping device according to claim 6, characterized in that: The locking mechanism comprises a pressing handle (14), a locking shaft (15) and a pin shaft (16); the locking shaft (15) passes through the two clamping plates (9) and the active rod (25); The pressing handle (14) comprises a cam and a rotating handle which are connected to each other. The cam is arranged at one end of the locking shaft (15) via the pin shaft (16) and can rotate along the pin shaft (16). The pin shaft (16) is arranged offset from the center of the cam. The rotating handle is driven to drive the cam to rotate along the pin shaft (16) to drive the two clamping plates (9) to clamp or release.

8. The split Hopkinson equipment connecting rod alignment clamping device according to claim 1, characterized in that: The base (1) comprises a bottom plate (3) and four shoe feet (2); both ends of the bottom plate (3) are provided with slots suitable for the connecting rod mechanism to pass through; The shoe foot (2) comprises a shoe foot seat (6), a threaded rod (4) and a shockproof pad (5); threaded holes are provided at four corners of the bottom plate (3); the four threaded rods (4) are respectively threadedly connected to the four threaded holes; the shoe foot seat (6) is arranged at the bottom of the threaded rod (4); and the shockproof pad (5) is arranged at the bottom of the shoe foot seat (6); A third groove is provided at the top of the threaded rod (4); the number of the inclination sensors (7) is the same as the number of the threaded rods (4); and four of the inclination sensors (7) are respectively arranged in four of the third grooves.

9. A split Hopkinson equipment connecting rod alignment clamping device according to claim 1, characterized in that: The first anti-friction mechanism (19.3) comprises a first retaining frame (19.31) and a plurality of first rolling balls (19.32), the plurality of first rolling balls (19.32) being arranged in the first retaining frame (19.31) at intervals, and the plurality of first rolling balls (19.32) being in contact with the rod; The second anti-friction mechanism (22.3) comprises a second retaining frame (22.31) and a plurality of second rolling balls (22.32); the plurality of second rolling balls (22.32) are arranged in the second retaining frame (22.31) at intervals, and the plurality of second rolling balls (22.32) are in contact with the impact member.

10. A method for using a split Hopkinson device connecting rod alignment clamping device, which is based on a split Hopkinson device connecting rod alignment clamping device as described in any one of claims 1 to 9, wherein the rod member of the split Hopkinson device comprises a driving rod, an incident rod and a transmission rod arranged in sequence and at intervals, wherein the driving rod drives the incident rod to move toward the transmission rod, and an impact member is arranged between the incident rod and the transmission rod, and characterized in that: The method of use comprises the following steps: S1, setting two separate Hopkinson device connecting rod alignment clamping devices at the position between the driving rod and the incident rod, and at the position between the incident rod and the transmission rod respectively; S2, adjusting the base (1) according to the tilt signal of the base (1) fed back to the control device (24) by the tilt sensor (7) so that the base (1) remains horizontal; S3, rotating the connecting rod mechanism on the two separate Hopkinson device connecting rod alignment clamping devices, respectively driving the two first guide positioning clamps (19) on the two separate Hopkinson device connecting rod alignment clamping devices to move toward the driving rod and the incident rod, and the incident rod and the transmission rod, respectively; adjusting the connecting rod mechanism according to the position signal of the horizontal movement of the two first guide positioning clamps (19) fed back to the control device (24) by the first position sensor (20) to achieve the centering of the driving rod and the incident rod, and the centering of the incident rod and the transmission rod; after the centering, driving the locking mechanism to lock the connecting rod mechanism; S4. The control device (24) on the split-type Hopkinson device connecting rod alignment clamping device located between the incident rod and the transmission rod controls the driving of the driving member (23) to drive the two second guide positioning chucks (22) to move toward the impact member. According to the position signal of the horizontal movement of the two second guide positioning chucks (22) fed back by the second position sensor (21), the control device (24) adjusts the driving member (23) to drive the two second guide positioning chucks (22) to move toward the impact member so that the impact member is centered with the transmission rod. After the centering, an external force is applied to the impact member. The impact member moves toward the transmission rod under the drive of the second anti-friction mechanism (22.3) and is fixed to the end of the transmission rod. The control device (24) controls the retraction of the driving member (23) to drive the two second guide positioning chucks (22) to move in a direction away from the impact member.

Images