CN115575219A - Impact testing machine with locking mechanism - Google Patents

Abstract

The invention discloses an impact testing machine with a locking mechanism, which comprises a workbench (1), wherein a main body frame (2) is arranged on the workbench (1), a sample piece clamping mechanism (3) is also arranged on the workbench (1), polished rods (4) are arranged on two sides in the main body frame (2), an impact moving seat (5) is arranged on each polished rod (4) through a linear bearing, an impact head (6) is arranged at the lower part of each impact moving seat (5), a lifting coiling machine (7) is arranged at the top of the main body frame (2), and a rope pulling end of each lifting coiling machine (7) is connected with each impact moving seat (5); the main body frame (2) is internally and longitudinally provided with a rack (8), and the side part of the impact moving seat (5) is provided with a locking box (9). The impact test device can lock the impact moving seat after the impact test is finished, so that secondary impact caused by rebound of the impact moving seat is avoided, and the test accuracy is improved.

Description

Shock testing machine with locking mechanism

technical field

The invention relates to the field of testing equipment, in particular to an impact testing machine with a locking mechanism.

Background technique

As plastic pipes are widely used in building materials, construction and other industries, the impact test of plastic pipes has become an indispensable testing item, and there have been many detection devices for impact tests, such as the Chinese invention patent with publication number CN110658056A The invention discloses a circular pipe fitting low-speed drop weight impact test detection device and impact test instrument. The detection device includes a test bench assembly, a drop hammer impact assembly, a vibration signal measurement assembly and a displacement signal measurement assembly. The test bench assembly includes a base, a sliding guide rod, a material receiving mechanism, and a photoelectric door, and the drop hammer impact assembly includes an impact plate, a force sensor, a hammer head, and a light shield. The vibration signal measurement component includes a first laser vibrometer and a second laser vibrometer, and the displacement signal measurement component includes a first linear displacement sensor and a second linear displacement sensor. This type of device mainly uses the hammer head of the drop hammer impact assembly to drop to the circular pipe along the axial direction of the sliding guide rod under the drive of the impact plate, so as to hammer the measuring point of the circular pipe to realize the hammering of the impact test. During the test, but because the tested plastic pipe fittings have a certain degree of plasticity and toughness, after the impact force is applied to the sample piece after the drop hammer falls to impact the sample piece, the sample piece absorbs the impact force and transforms into elastic force, rebounding the drop hammer , so that the falling weight leaves the sample and makes a secondary impact on the sample again, resulting in a decrease in test accuracy.

Contents of the invention

The object of the present invention is to provide an impact testing machine with a locking mechanism. The invention can complete the locking of the impact moving seat after the impact test is completed, avoiding the rebound of the impact moving seat, causing secondary impact, and improving the accuracy of the experiment.

The technical solution of the present invention: the impact testing machine with a locking mechanism, including a workbench, a main body frame is arranged on the workbench, and a sample clamping mechanism is also arranged on the workbench, and the two sides of the main body frame are provided with The polished rod is provided with an impact moving seat via a linear bearing, an impact head is provided at the lower part of the impact moving seat, and a lifting reel is provided on the top of the main frame, and the pull rope end of the lifting reel is connected with the impact moving seat; The main body frame is provided with a rack longitudinally, and the side of the impact moving seat is provided with a locking box, and a rotating shaft is provided in the locking box through a bearing, and a gear is arranged on the rotating shaft, and the rack passes through the locking box and the teeth The bar is meshed with the gear, and the inner wall of the locking box is provided with an elastic member, and there is a movable rod in the elastic member. The end of the movable rod is provided with a locking block, and the locking block is matched with the teeth of the gear, and the movable rod The lower part of the lock box is provided with a stopper, the lock box is provided with a power part, the movable end of the power part is in conflict with the stop block, and the lower end of the power part protrudes out of the lock box, and the workbench is provided with There is a jacking frame, and the top of the jacking frame corresponds to the position of the power part; a stabilizing component is arranged in the locking box and above the elastic part.

In the above-mentioned impact testing machine with a locking mechanism, the main body frame includes a support column arranged on the workbench, and a top plate is connected to the support column through nuts, and the lifting coiler is set on the top plate.

In the aforementioned impact testing machine with a locking mechanism, the lifting reel includes a frame arranged on the top plate, a reel is provided on the frame through a bearing, and a stay rope is wound on the reel, and the stay rope One end of the reel is connected with the upper end of the impact moving seat, and one end of the shaft portion of the reel is provided with a rotating disk.

In the aforementioned impact testing machine with a locking mechanism, the elastic member includes a fixed rod arranged on the inner wall of the lock box, the movable rod is arranged in the fixed rod, and the fixed rod is provided with a first return spring, One end of the first return spring is connected with the movable rod, and the other end of the first return spring is connected with the inner wall of the fixed rod.

In the aforementioned impact testing machine with a locking mechanism, the inner wall of the fixed rod is provided with a limiting groove, and the movable rod is provided with a limiting block, and the limiting block is arranged in the limiting groove.

In the aforementioned impact testing machine with a locking mechanism, the stable component includes a fixed rod arranged on the inner wall of the lock box, one end of the fixed rod is covered with a sliding rod, and the sliding rod is connected with the fixed rod through a fixed bayonet, sliding The lower part of the rod is provided with a rotating plate, the lower part of the sliding rod is provided with a one-way plate on one side of the rotating plate, and the upper part of the movable rod is provided with locking teeth, which cooperate with the rotating plate.

In the aforementioned impact testing machine with a locking mechanism, the power part includes a vertical rod arranged in the locking box, the upper end of the vertical rod is hinged with a swing rod, and the side of the vertical rod is provided with a horizontal plate, A second return spring is arranged on the horizontal plate, and one end of the second return spring is connected with the swing bar.

Compared with the prior art, the present invention has the following advantages:

1. In the present invention, firstly, the sample is effectively clamped by the sample clamping mechanism, and the winding machine is rotated and lifted, and the impact moving seat is lifted to a certain height, and the lifting winding machine is released, and the impact moving seat moves downward rapidly. Sliding, the impact head hammers the sample, and at the same time the jacking frame touches the power part, the power part moves upward, the movable end of the power part pushes the stopper of the movable rod, the movable rod moves to the gear side, and the lock at the end of the movable rod The stop block is stuck in the gear teeth, and the stable component positions the movable rod. The locking block can always be stuck in the gear teeth of the gear, and the gear does not rotate, so that the impact of the moving seat does not occur when it is subjected to the elastic force of the sample. The rebound can effectively lock the impact mobile seat, thereby improving the accuracy of the test.

2. In the stable assembly, the rotating plate rotates under the push of the locking teeth, and the locking teeth move from one side of the rotating plate to the other side of the rotating plate. Under the action of the first return spring, the original movable rod will move toward When moving back and forth, due to the one-way plate, the rotating plate cannot rotate to the reset side, and the locking teeth interfere with the rotating plate, and the movable rod is effectively locked, ensuring that the locking block can always be stuck in the teeth of the gear.

3. In the power part, when the impact moving seat reaches a certain distance from the workbench, the end of the vertical rod touches the jacking frame, the vertical rod moves upward, the end of the swing rod collides with the stopper, and the swing rod rotates , and the swing rod pushes the movable rod to move to the gear side, the structure is simple, and the push is effective.

4. The inner wall of the fixed rod is provided with a limit groove, and the movable rod is provided with a limit block. The limit block is arranged in the limit groove, and the movable rod can stably displace and slide, thereby improving the locking stability of the locking block.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the schematic diagram of elastic member;

Fig. 3 is a schematic diagram of a stable assembly;

Explanation of symbols in the attached drawings: 1-working table, 2-main body frame, 3-sample clamping mechanism, 4-polished rod, 5-impact moving seat, 6-impact head, 7-lifting coiler, 8- Rack, 9-lock box, 10-rotating shaft, 11-gear, 12-elastic part, 13-movable rod, 14-lock block, 15-block, 16-power part, 17-jacking frame, 18 -Stable component, 19-support column, 20-top plate, 701-frame, 702-spool, 703-stay cord, 704-rotating disc, 121-fixed rod, 122-first return spring, 123-limit Slot, 124-limit block, 181-fixed rod, 182-sliding rod, 183-rotating plate, 184-one-way plate, 185-slip, 161-vertical rod, 162-swing rod, 163-horizontal plate, 164 - second return spring.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and examples, but not as a basis for limiting the present invention.

Embodiment: an impact testing machine with a locking mechanism, including a workbench 1, on which a main body frame 2 is arranged, as shown in accompanying drawings 1 to 3, and a sample clamp is also provided on the workbench 1 Mechanism 3, the sample clamping mechanism is a conventional mechanism for clamping pipe fittings, and will not be repeated here. The two sides of the main body frame 2 are provided with polished rods 4, and the polished rods 4 are provided with impact moving seats 5 via linear bearings. , the bottom of the impact mobile seat 5 is provided with an impact head 6, the impact head needs to have higher strength and hardness, and better wear resistance to ensure that it can be used for a long time, and the top of the main body frame 2 is provided with a lifting coiler 7 , the pull rope end of the hoisting reel 7 is connected with the impact moving seat 5; a rack 8 is longitudinally provided in the main body frame 2, and a locking box 9 is provided on the side of the impact moving seat 5, and the lock The inside of the lock box 9 is provided with a shaft 10 via a bearing, the shaft 10 is provided with a gear 11, the rack 8 passes through the lock box 9 and the rack 8 is engaged with the gear 11, and the inner wall of the lock box 9 is provided with an elastic member 12. There is a movable rod 13 inside the elastic member 12, the end of the movable rod 13 is provided with a locking block 14, the locking block 14 is matched with the teeth of the gear 44, and the lower part of the movable rod 13 is provided with a stopper 15. The upper part of the movable rod 13 is provided with a locking tooth 185, and the lock box 9 is provided with a power part 16, the movable end of the power part 16 is in conflict with the stopper 15, and the lower end of the power part 16 protrudes outwards to lock Box 9, the workbench 1 is provided with a jacking frame 17, the top of the jacking frame 17 corresponds to the position of the power part 16; the locking box 9 and above the elastic part 12 are provided with a stabilizing component 18 , the stabilizing component 18 is matched with the locking tooth 185 . In order to allow the impact head to obtain different impact forces, a straight plate is provided on the main body frame, and a plurality of through holes are arranged on the straight plate. Push the impact moving seat to the corresponding through hole, insert a bayonet pin into the through hole, and the bayonet pin is Hold the impact mobile seat, the impact mobile seat will not fall downwards, and pull out the bayonet pin during the test.

The main body frame 2 includes a support column 19 arranged on the workbench 1, the support column 19 is connected with a top plate 20 through a nut, and the lifting coiler 7 is arranged on the top plate 20, this kind of composition structure is convenient for disassembly and assembly. Install.

The lifting reel 7 includes a frame 701 arranged on the top plate 20, the frame 701 is provided with a reel 702 through a bearing, the reel 702 is wound with a stay rope 703, and one end of the stay rope 703 is connected to the impact The upper ends of the moving seat 5 are connected, and one end of the shaft portion of the reel 702 is provided with a rotating disc 704, which can be rotated to realize winding and unwinding, and one end of the stay rope is connected with the impact moving seat, and the movement up and down mainly depends on the movement of the reel. Take-up and pay-off.

The elastic member 12 includes a fixed rod 121 arranged on the inner wall of the locking box 9, the movable rod 13 is arranged in the fixed rod 121, the fixed rod 121 is provided with a first return spring 122, and the first return spring 122 One end is connected with the movable rod 13, the other end of the first return spring 122 is connected with the inner wall of the fixed rod 121, the movable rod moves in the fixed rod, the first return spring mainly plays the role of reset, and the inner wall of the fixed rod 121 is A limiting groove 123 is arranged on the top, and a limiting block 124 is arranged on the movable rod 13. The limiting block 124 is arranged in the limiting groove 123, and the movable rod can stably displace and slide, thereby improving the locking stability of the locking block.

Described stabilizing component 18 comprises the fixed rod 181 that is arranged on the inner wall of locking box 9, and one end of fixed rod 181 is covered with sliding rod 182, and sliding rod 182 is connected with fixed rod 181 through fixing bayonet, and the lower part of sliding rod 182 is provided with Rotating plate 183, the bottom of slide bar 182 and one side of rotating plate 183 are provided with one-way plate 184, latch 185 cooperates with rotating plate 183, and rotating plate rotates under the promotion of latch, and latch is from the rotation plate. One side moves to the other side of the rotating plate. Under the action of the first return spring, the original movable rod will move back. Due to the one-way plate, the rotating plate cannot rotate to the reset side, and the locking teeth interfere with the rotating plate. It is effectively locked to ensure that the locking block can always be stuck in the teeth of the gear. In order to facilitate the reset of the sliding bar, a bayonet connection is adopted between the sliding bar and the fixed bar. When the sliding bar needs to be reset, the bayonet pin is pulled out to restore the sliding bar to its original state.

The power part 16 includes a vertical rod 161 arranged in the locking box 9, the upper end of the vertical rod 161 is hinged with a swing rod 162, the side of the vertical rod 161 is provided with a horizontal plate 163, and the horizontal plate 163 is provided with a horizontal plate 163. There is a second return spring 164, one end of the second return spring 164 is connected with the swing rod 162, when the impact moving seat reaches a certain distance from the workbench, the end of the vertical rod touches the lifting frame, and the vertical rod moves upwards, The end of the swing rod conflicts with the block, the swing rod rotates, and the swing rod pushes the movable rod to move to the gear side, the structure is simple, and the driving is effective. In the initial state, the swing lever is tilted to the right, so that the swing lever can swing to the right. When the swing lever pushes the stopper, the swing lever is gradually set horizontally, and the second return spring mainly plays the role of reset. The vertical rod is provided with a spring, and when the vertical rod moves with the lock box, the spring can reset the vertical rod.

The working principle of the present invention: firstly, the sample is effectively clamped by the sample clamping mechanism, the winding machine is rotated and lifted, the impact moving seat is lifted to a certain height, the lifting winding machine is released, and the impact moving seat moves downward quickly Sliding, the impact head hammers the sample, and at the same time the jacking frame touches the power part, the power part moves upward, the movable end of the power part pushes the stopper of the movable rod, the movable rod moves to the gear side, and the lock at the end of the movable rod The stop block is stuck in the gear teeth, and the stable component positions the movable rod. The locking block can always be stuck in the gear teeth of the gear, and the gear does not rotate, so that the impact of the moving seat does not occur when it is subjected to the elastic force of the sample. The rebound can effectively lock the impact mobile seat, thereby improving the accuracy of the test.

Claims (7)

1. Impact tester with locking mechanism, including workstation (1), be equipped with main part frame (2) on workstation (1), still be equipped with sample spare fixture (3), its characterized in that on workstation (1): two sides in the main body frame (2) are provided with polished rods (4), the polished rods (4) are provided with impact moving seats (5) through linear bearings, the lower parts of the impact moving seats (5) are provided with impact heads (6), the top of the main body frame (2) is provided with a lifting coiler (7), and the rope pulling end of the lifting coiler (7) is connected with the impact moving seats (5); the main body frame (2) is internally and longitudinally provided with a rack (8), the side part of the impact moving seat (5) is provided with a locking box (9), a rotating shaft (10) is arranged in the locking box (9) through a bearing, a gear (11) is arranged on the rotating shaft (10), the rack (8) penetrates through the locking box (9) and the rack (8) is meshed with the gear (11), the inner wall of the locking box (9) is provided with an elastic part (12), a movable rod (13) is arranged in the elastic part (12), the end part of the movable rod (13) is provided with a locking block (14), the locking block (14) is matched with the gear teeth of the gear (44), the lower part of the movable rod (13) is provided with a stop block (15), the upper part of the movable rod (13) is provided with a clamping tooth (185), the locking box (9) is internally provided with a power part (16), the movable end of the power part (16) is abutted against the stop block (15), the lower end of the power part (16) extends outwards out of the locking box (9), the working platform (1) is provided with a jacking frame (17), and the position corresponding to the position of the jacking frame (17); and a stabilizing component (18) is arranged in the locking box (9) and above the elastic piece (12), and the stabilizing component (18) is matched with the latch (185).

2. The impact tester with a lock mechanism according to claim 1, wherein: the main body frame (2) comprises a support column (19) arranged on the workbench (1), a top plate (20) is connected to the support column (19) through a nut, and the lifting wire winder (7) is arranged on the top plate (20).

3. The impact tester with a lock mechanism according to claim 2, wherein: the lifting winding machine (7) comprises a frame (701) arranged on a top plate (20), a winding reel (702) is arranged on the frame (701) through a bearing, a pull rope (703) is wound on the winding reel (702), one end of the pull rope (703) is connected with the upper end of an impact moving seat (5), and a rotating disc (704) is arranged at one end of a shaft part of the winding reel (702).

4. The impact tester with a lock mechanism according to claim 1, wherein: elastic component (12) including setting up dead lever (121) on locking case (9) inner wall, movable rod (13) set up in dead lever (121), be equipped with first reset spring (122) in dead lever (121), first reset spring (122) one end is connected with movable rod (13), the other end of first reset spring (122) is connected with dead lever (121) inner wall.

5. The impact tester with a lock mechanism according to claim 4, wherein: the inner wall of the fixed rod (121) is provided with a limiting groove (123), the movable rod (13) is provided with a limiting block (124), and the limiting block (124) is arranged in the limiting groove (123).

6. The impact tester with a lock mechanism according to claim 1, wherein: the stabilizing assembly (18) comprises a fixed rod (181) arranged on the inner wall of the locking box (9), a sliding rod (182) is sleeved at one end of the fixed rod (181), the sliding rod (182) is connected with the fixed rod (181) through a fixed clamping pin, a rotating plate (183) is arranged at the lower part of the sliding rod (182), a one-way plate (184) is arranged at the lower part of the sliding rod (182) and positioned on one side of the rotating plate (183), and the clamping teeth (185) are matched with the rotating plate (183).

7. The impact tester with a lock mechanism according to claim 1, wherein: the power part (16) comprises a vertical rod (161) arranged in the locking box (9), the upper end of the vertical rod (161) is hinged with a swing rod (162), a transverse plate (163) is arranged on the side portion of the vertical rod (161), a second reset spring (164) is arranged on the transverse plate (163), and one end of the second reset spring (164) is connected with the swing rod (162).

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