Drop weight impact testing machine

Abstract

The present application relates to the technical field of engineering inspection equipment, and in particular to a drop-hammer impact testing machine, which includes a frame and a guide rail vertically arranged on the frame, a mounting seat is arranged on the guide rail, a drop-hammer is arranged at the bottom end of the mounting seat, and a locking mechanism for locking the mounting seat is also arranged on the frame; a reinforcement ring is arranged on the outer side of the mounting seat, the thickness of the reinforcement ring is greater than the thickness of the mounting seat, a positioning hole is opened on the reinforcement ring, a guide member is arranged in the positioning hole, and the guide rail is arranged through the guide member. The present application can improve the problem that the guide member will generate an outward force on the guide rail, thereby causing the guide member to wear the guide rail.

Description

Technical Field

[0001] The present application relates to the technical field of engineering testing equipment, and in particular to a drop hammer impact testing machine. Background Art

[0002] Impact collision is a common mechanical phenomenon in daily life and engineering applications. Experimental simulation is an effective research method, and a drop hammer impact tester is one of the more common experimental equipment. The current drop hammer impact tester includes a frame and a guide rail vertically arranged with the frame. A mounting seat is provided on the guide rail. The mounting seat is provided with a positioning hole for the guide rail to pass through, and a drop hammer is fixedly installed at the bottom end of the mounting seat. The frame is also provided with a locking mechanism for locking the mounting seat. After the mounting seat is locked by the contact locking mechanism, the drop hammer and the mounting seat move in the vertical direction under the guidance of the guide rail. In this process, in order to minimize the friction between the mounting seat and the guide rail when the drop hammer falls, a guide piece is installed in the positioning hole on the mounting seat, and the guide rail is passed through the guide piece setting.

[0003] During the use of the above-mentioned drop hammer impact testing machine, the inventors found that the above-mentioned technology has at least the following problems: the drop hammer fixed at the bottom end of the mounting seat can easily cause the mounting seat to be deformed and conical in shape due to force, and cause the guide member installed on the mounting seat to slightly deviate outward. Since the guide rail is inserted into the guide member, the guide member will exert an outward force on the guide rail, thereby causing the guide member to wear the guide rail, which may affect the stability of the drop hammer when it moves in the vertical direction. Summary of the invention

[0004] In order to improve the problem that the guide member generates an outward force on the guide rail, thereby causing the guide member to wear the guide rail, the present application provides a drop hammer impact testing machine.

[0005] The drop hammer impact testing machine provided in this application adopts the following technical solution:

[0006] A drop-hammer impact testing machine comprises a frame and a guide rail vertically arranged on the frame, a mounting seat is arranged on the guide rail, a drop-hammer is arranged at the bottom end of the mounting seat, and a locking mechanism for locking the mounting seat is also arranged on the frame; a reinforcement ring is arranged on the outer side of the mounting seat, the thickness of the reinforcement ring is greater than the thickness of the mounting seat, a positioning hole is opened on the reinforcement ring, a guide piece is arranged in the positioning hole, and the guide rail is passed through the guide piece.

[0007] By adopting the above technical solution, by arranging a thickened reinforcement ring on the peripheral side of the mounting seat and installing the guide member in the positioning hole opened on the reinforcement ring, the deformation of the edge of the mounting seat can be effectively reduced. The guide member arranged on the reinforcement ring is not easy to deviate outward and exert an outward force on the guide rail to cause wear of the guide member on the guide rail, and the stability of the drop hammer when moving in the vertical direction is not affected as much as possible.

[0008] In a specific feasible implementation scheme, the locking mechanism includes a sliding plate and an electric clamp, the sliding plate is slidably arranged on the guide rail, the electric clamp is arranged at the bottom end of the sliding plate and is connected to the mounting seat; a top plate is provided on the frame, a lifting mechanism is provided on the top plate, the lifting mechanism is connected to the sliding plate, and the lifting mechanism is used to adjust the height of the sliding plate on the guide rail.

[0009] By adopting the above technical solution, the drop hammer is clamped by an electric clamp, and before the test, the height of the sliding plate on the guide rail is adjusted by the lifting mechanism. After the adjustment, the electric clamp is released to complete the impact test of the drop hammer. The structure is simple and easy to implement.

[0010] In a specific feasible implementation scheme, the lifting mechanism includes a winch arranged on the top plate, a pull rope wound on the winch, and a fixed pulley arranged on the top plate, the winch is connected to a drive motor, a through hole is opened on the top plate, and the end of the pull rope away from the winch bypasses the fixed pulley and passes through the through hole to be connected to the sliding plate.

[0011] By adopting the above technical solution, the winch is driven by starting the motor, and the sliding plate is raised and lowered by using a pull rope. This structure is convenient for disassembly and replacement.

[0012] In a specific feasible implementation scheme, a limit column is provided at a position of the top plate below the through hole, the limit column is vertically arranged, a limit slot is defined in the limit column, a lifting column is provided on the sliding plate, and the lifting column can slide in the vertical direction in the limit slot; the top end of the lifting column is connected to the end of the pull rope away from the winch, and the bottom end of the lifting column is connected to the top surface of the sliding plate.

[0013] By adopting the above technical solution, when the winch lifts the sliding plate through the pull rope, the lifting column slides in the vertical direction in the limiting groove, and the limiting groove can form a good guiding effect on the lifting column, thereby improving the stability of the sliding plate during vertical movement.

[0014] In a specific possible implementation scheme, a magnetic column is provided on the top surface of the drop hammer, a groove for inserting the magnetic column is provided at the bottom end of the mounting seat, a magnetic sheet that can be magnetically attracted to the magnetic column is provided in the groove, and the magnetic sheet is magnetically connected to the magnetic column.

[0015] By adopting the above technical solution, a detachable connection between the drop weight and the mounting seat is achieved through the arrangement of magnetic sheets and magnetic columns, making it easy to disassemble the drop weight and the mounting seat.

[0016] In a specific feasible implementation scheme, a guide rod is vertically provided between the top plate and the frame, the guide rod is provided with a slider capable of moving along the length direction of the guide rod, a cylinder is provided on the slider, a piston rod of the cylinder is connected with a claw, an annular groove is provided on the drop hammer, the claw extends into the annular groove and abuts against the inner wall of the annular groove.

[0017] By adopting the above technical solution, before the drop hammer test is carried out, the drop hammer has not yet been magnetically attracted to the mounting seat. First, the height of the slider on the guide rod is adjusted, and then the cylinder is driven so that the piston rod of the cylinder drives the claw to extend into the annular groove. At this time, the drop hammer is supported by the claw. When the drop hammer impact test is required, the slider is moved upward until the magnetic column extends into the groove and is magnetically connected to the magnetic sheet, and then the cylinder is started to retract the claw. This arrangement can avoid as much as possible the deformation of the mounting seat due to long-term suspension of the drop hammer, thereby protecting the mounting seat.

[0018] In a specific possible implementation mode, a hydraulic cylinder is provided on the frame, a piston rod of the hydraulic cylinder is vertically arranged, and a top end of the piston rod of the hydraulic cylinder is connected to a bottom surface of the sliding block.

[0019] By adopting the above technical solution, the hydraulic cylinder arranged on the frame drives the slider to slide on the guide rod in the vertical direction. The hydraulic cylinder can withstand greater force than other driving devices and can provide good support for the slider.

[0020] In a specific feasible implementation scheme, a circular hole is provided on the frame directly below the drop weight, a loading platform for supporting the test piece is provided in the circular hole, a rubber ring is provided on the side wall of the circular hole above the loading platform, and a gap is left between the rubber ring and the drop weight.

[0021] By adopting the above technical solution, when the drop weight falls and impacts the test piece, the setting of the rubber ring facilitates limiting the drop weight, making it difficult for the drop weight to tilt excessively to the side, thereby avoiding wear of the guide rail and the guide member as much as possible.

[0022] In a specific possible implementation mode, reinforcing steel bars are embedded between the reinforcement ring and the mounting seat.

[0023] By adopting the above technical solution, the provision of reinforcing steel bars facilitates enhancing the connection strength between the reinforcement ring and the mounting seat, making it less likely for the reinforcement ring to deform.

[0024] In a specific possible implementation manner, a wind shield is provided on the outer side of the frame, and the wind shield covers the frame.

[0025] By adopting the above technical solution, the setting of the wind shield allows the test to be carried out in a windless environment as much as possible, thereby reducing the influence of external factors.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By arranging a thickened reinforcement ring on the peripheral side of the mounting seat and installing the guide member in the positioning hole provided on the reinforcement ring, the deformation of the edge of the mounting seat can be effectively reduced. The guide member arranged on the reinforcement ring is not easy to deviate outward and generate an outward force on the guide rail, which causes the guide member to wear the guide rail, and the stability of the drop weight when moving in the vertical direction is not affected as much as possible;

[0028] 2. Before the drop hammer test, the drop hammer has not yet been magnetically attracted to the mounting seat. First, adjust the height of the slider on the guide rod, and then drive the cylinder so that the piston rod of the cylinder drives the claw to extend into the annular groove. At this time, the drop hammer is supported by the claw. When the drop hammer impact test is required, move the slider upward until the magnetic column extends into the groove and is magnetically connected to the magnetic sheet, and then start the cylinder to retract the claw. This setting can avoid the large deformation of the mounting seat due to long-term hanging of the drop hammer as much as possible, thereby protecting the mounting seat;

[0029] 3. When the drop weight falls and impacts the specimen, the rubber ring is set to limit the drop weight, making it difficult for the drop weight to tilt excessively to the side, thereby avoiding wear on the guide rail and guide parts as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the drop hammer impact testing machine in the embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view of the frame in the embodiment of the present application.

[0032] Figure 3 It is a cross-sectional view of the mounting seat in the embodiment of the present application.

[0033] Figure 4 yes Figure 3 Enlarged view of part A.

[0034] Figure 5 It is a structural schematic diagram of the lifting mechanism in the embodiment of the present application.

[0035] Figure 6 It is a schematic diagram of the structure of the windshield in the embodiment of the present application.

[0036] Explanation of the reference numerals in the accompanying drawings: 1. frame; 11. guide rail; 12. guide rod; 13. support column; 14. hydraulic cylinder; 15. round hole; 16. loading platform; 17. rubber ring; 2. mounting seat; 21. reinforcement ring; 22. positioning hole; 23. linear bearing; 24. groove; 25. magnetic sheet; 26. connector; 3. drop hammer; 31. magnetic column; 32. annular groove; 4. locking mechanism; 41. sliding plate; 42. electric clamp; 43. lifting column; 44. limit plate; 5. lifting mechanism; 51. winch; 52. driving motor; 53. pull rope; 54. fixed pulley; 6. top plate; 61. through hole; 62. limit column; 621. limit groove; 7. slider; 71. cylinder; 72. claw; 8. reinforcing steel bar; 9. wind shield. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with the accompanying drawings.

[0038] The present application embodiment discloses a drop hammer impact testing machine. Figure 1 The drop hammer impact tester includes a frame 1, a top plate 6 is arranged parallel to the frame 1, four support columns 13, two guide rails 11 and two guide rods 12 are fixedly connected between the top plate 6 and the frame 1, and the support columns 13, the guide rails 11 and the guide rods 12 are all arranged vertically. Figure 2 A circular hole 15 is provided at the center of the top surface of the frame 1, and a loading platform 16 for carrying the test piece is fixedly installed in the circular hole 15. A drop hammer 3, a mounting seat 2, a locking mechanism 4 and a lifting mechanism 5 for driving the mounting seat 2 to move in the vertical direction are arranged in sequence above the loading platform 16.

[0039] Reference Figure 1 The locking mechanism 4 includes a sliding plate 41 and an electric clamp 42. The sliding plate 41 is slidably arranged on the two guide rails 11, and the electric clamp 42 is fixedly installed on the bottom surface of the sliding plate 41. Figure 3 , a connector 26 is fixedly installed on the top surface of the mounting seat 2, and the electric clamp 42 clamps the connector 26. The mounting seat 2 is a circular plate as a whole, and a reinforcement ring 21 is fixedly connected to the circumference of the mounting seat 2. The thickness of the reinforcement ring 21 is greater than the thickness of the mounting seat 2. Two positioning holes 22 are provided on the reinforcement ring 21, and a linear bearing 23 is fixedly installed in each positioning hole 22. The linear bearing 23 corresponds to the guide rail 11 one by one, and the guide rail 11 is passed through the corresponding linear bearing 23. By providing a thickened reinforcement ring 21 on the circumference of the mounting seat 2 and installing the linear bearing 23 in the positioning hole 22 provided on the reinforcement ring 21, the deformation of the edge of the mounting seat 2 caused by the gravity of the drop weight 3 can be effectively reduced. The guide member provided on the reinforcement ring 21 is not easy to deviate outward and generate an outward force on the guide rail 11, which causes the guide member to wear the guide rail 11, so as to make the stability of the drop weight 3 when moving in the vertical direction as unaffected as possible. Combined with Figure 4 A plurality of reinforcing steel bars 8 are embedded at the connection between the reinforcing ring 21 and the mounting seat 2. The arrangement of the reinforcing steel bars 8 facilitates enhancing the connection strength between the reinforcing ring 21 and the mounting seat 2, so that the reinforcing ring 21 is not easily deformed.

[0040] Reference Figure 4 The top surface of the drop weight 3 is fixedly mounted with a plurality of magnetic columns 31, and the bottom surface of the mounting seat 2 is provided with a plurality of grooves 24, which correspond one to one with the magnetic columns 31. The inner top walls of the grooves 24 are fixedly connected with magnetic sheets 25 that can be magnetically attracted to the magnetic columns 31. The magnetic columns 31 are inserted into the corresponding grooves 24 and are magnetically connected to the magnetic sheets 25 therein. Figure 1 Each guide rod 12 is slidably connected to a slider 7, and two hydraulic cylinders 14 are fixedly installed on the frame 1. The hydraulic cylinders 14 correspond to the sliders 7 one by one, and the piston rods of the hydraulic cylinders 14 are fixedly connected to the bottom surfaces of the corresponding sliders 7. Figure 3 , a cylinder 71 is fixedly installed on the side of the slider 7 close to the drop weight 3, and a claw 72 is fixedly connected to the piston rod of the cylinder 71. An annular groove 32 is provided on the side wall of the drop weight 3, and the claw 72 extends into the annular groove 32 and abuts against the inner top wall of the annular groove 32. Before the drop weight 3 test, the drop weight 3 has not yet been magnetically attracted to the mounting seat 2. First, the height of the slider 7 on the guide rod 12 is adjusted, and then the cylinder 71 is driven so that the piston rod of the cylinder 71 drives the claw 72 to extend into the annular groove 32. At this time, the drop weight 3 is supported by the claw 72. When the drop weight 3 impact test is required, the slider 7 is moved upward until the magnetic column 31 extends into the groove 24 and is magnetically connected to the magnetic sheet 25, and then the cylinder 71 is started to retract the claw 72. This setting can avoid the large deformation of the mounting seat 2 due to the long-term suspension of the drop weight 3 as much as possible, thereby protecting the mounting seat 2.

[0041] Reference Figure 5The lifting mechanism 5 includes a winch 51, a pull rope 53 and a fixed pulley 54. The winch 51 is fixedly installed on the top surface of the top plate 6. The pull rope 53 is wound on the winch 51. The winch 51 is connected to a drive motor 52. A through hole 61 is opened in the center of the top plate 6. The fixed pulley 54 is fixedly installed on the top surface of the top plate 6 at the position of the through hole 61. A limit column 62 is fixedly installed at the position below the through hole 61 of the top plate 6. The limit column 62 is vertically arranged. A limit slot 621 is provided in the limit column 62 in the vertical direction. A lifting column 43 is fixedly installed on the top surface of the sliding plate 41. The end of the pull rope 53 away from the hoist 51 passes around the fixed pulley 54 and passes through the through hole 61 and is fixedly connected to the top of the lifting column 43. When the motor is started to drive the hoist 51 to operate, the lifting column 43 slides in the limit slot 621 in the vertical direction when the sliding plate 41 is lifted by the pull rope 53. The limit slot 621 can form a good guiding effect on the lifting column 43, thereby improving the stability of the sliding plate 41 during vertical movement. The top of the lifting column 43 is fixedly connected to the limit plate 44. The setting of the limit plate 44 makes it difficult for the lifting column 43 to slide out of the limit slot 621.

[0042] Reference Figure 1 and Figure 2 A rubber ring 17 is fixedly installed on the side wall of the circular hole 15 above the stage 16. A gap is left between the rubber ring 17 and the outer wall of the drop weight 3. When the drop weight 3 falls and impacts the specimen, the rubber ring 17 is set to limit the drop weight 3, so that the drop weight 3 is not easy to tilt excessively to the side, thereby avoiding wear of the guide rail 11 and the guide member as much as possible. Figure 6 A windshield 9 is fixedly installed on the outside of the frame 1, and the windshield 9 covers the frame 1. The setting of the windshield 9 allows the test to be carried out in a windless environment as much as possible, thereby reducing the influence of external factors.

[0043] The implementation principle of a drop hammer impact tester in the embodiment of the present application is as follows: by providing a thickened reinforcement ring 21 on the peripheral side of the mounting seat 2 and installing the guide member in the positioning hole 22 provided on the reinforcement ring 21, the deformation of the edge of the mounting seat 2 can be effectively reduced. The guide member provided on the reinforcement ring 21 is not easy to deviate outward and exert an outward force on the guide rail 11, causing the guide member to wear the guide rail 11, so that the stability of the drop hammer 3 when moving in the vertical direction is not affected as much as possible. In addition, before testing the drop hammer 3, the drop hammer 3 is supported by the slider 7, the hydraulic cylinder 14 and the claw 72, instead of allowing the drop hammer 3 to be suspended at the bottom of the mounting seat 2 for a long time. When the test is carried out, the hydraulic cylinder 14 is controlled to dock the drop hammer 3 with the mounting seat 2 and retract the claw 72. This arrangement can avoid as much as possible the large deformation of the mounting seat 2 due to the long-term suspension of the drop hammer 3, thereby protecting the mounting seat 2.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A drop-weight impact testing machine, comprising a frame (1) and a guide rail (11) vertically arranged on the frame (1), a mounting seat (2) being arranged on the guide rail (11), a drop-weight (3) being arranged at the bottom end of the mounting seat (2), and a locking mechanism (4) for locking the mounting seat (2) being further arranged on the frame (1); characterized in that: A reinforcement ring (21) is provided on the outer side of the mounting seat (2), the thickness of the reinforcement ring (21) is greater than the thickness of the mounting seat (2), a positioning hole (22) is provided on the reinforcement ring (21), a guide piece is provided in the positioning hole (22), and the guide rail (11) is provided through the guide piece; The locking mechanism (4) comprises a sliding plate (41) and an electric clamp (42), wherein the sliding plate (41) is slidably arranged on the guide rail (11), and the electric clamp (42) is arranged at the bottom end of the sliding plate (41) and connected to the mounting seat (2); a top plate (6) is arranged on the frame (1), and a lifting mechanism (5) is arranged on the top plate (6), and the lifting mechanism (5) is connected to the sliding plate (41), and the lifting mechanism (5) is used to adjust the height of the sliding plate (41) on the guide rail (11); The top surface of the drop weight (3) is provided with a magnetic column (31), the bottom end of the mounting seat (2) is provided with a groove (24) for inserting the magnetic column (31), a magnetic sheet (25) capable of magnetically attracting the magnetic column (31) is provided in the groove (24), and the magnetic sheet (25) is magnetically connected to the magnetic column (31); A guide rod (12) is vertically arranged between the top plate (6) and the frame (1); the guide rod (12) is provided with a slider (7) capable of moving along the length direction of the guide rod (12); a cylinder (71) is arranged on the slider (7); a piston rod of the cylinder (71) is connected with a claw (72); an annular groove (32) is provided on the drop hammer (3); the claw (72) extends into the annular groove (32) and abuts against the inner wall of the annular groove (32); A hydraulic cylinder (14) is provided on the frame (1), a piston rod of the hydraulic cylinder (14) is arranged vertically, and the top end of the piston rod of the hydraulic cylinder (14) is connected to the bottom surface of the sliding block (7).

2. The drop weight impact testing machine according to claim 1, characterized in that: The lifting mechanism (5) comprises a hoist (51) arranged on the top plate (6), a pull rope (53) wound on the hoist (51), and a fixed pulley (54) arranged on the top plate (6); the hoist (51) is connected to a drive motor (52); a through hole (61) is provided on the top plate (6); an end of the pull rope (53) away from the hoist (51) passes around the fixed pulley (54) and passes through the through hole (61) to be connected to the sliding plate (41).

3. The drop weight impact testing machine according to claim 2, characterized in that: The top plate (6) is provided with a limit column (62) at a position below the through hole (61); the limit column (62) is vertically arranged, and a limit groove (621) is provided in the limit column (62); a lifting column (43) is provided on the sliding plate (41), and the lifting column (43) can slide in the limit groove (621) along the vertical direction; the top end of the lifting column (43) is connected to the end of the pull rope (53) away from the winch (51), and the bottom end of the lifting column (43) is connected to the top surface of the sliding plate (41).

4. The drop weight impact testing machine according to claim 1, characterized in that: A circular hole (15) is provided on the frame (1) directly below the drop weight (3); a loading platform (16) for supporting a test piece is provided in the circular hole (15); a rubber ring (17) is provided on the side wall of the circular hole (15) above the loading platform (16); and a gap is left between the rubber ring (17) and the drop weight (3).

5. The drop weight impact testing machine according to claim 1, characterized in that: A reinforcing steel bar (8) is embedded between the reinforcing ring (21) and the mounting seat (2).

6. The drop weight impact testing machine according to claim 1, characterized in that: A wind shield (9) is provided on the outer side of the frame (1), and the wind shield (9) covers the frame (1).

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