CN112033629A - Drop hammer impact module and drop type impact test device thereof - Google Patents

Abstract

A falling hammer impact module and a falling body impact test device thereof are provided, wherein the falling body impact test device comprises: the cold and hot impact module is used for continuously moving the samples from the cold bin and the hot bin so as to realize cold and hot impact; and the drop hammer impact module is used for impacting the sample by the drop hammer until the sample is hit. The invention has simple structure, can immediately carry out falling body impact test after carrying out cold and hot impact on the sample, thereby reflecting the strength of the sample closer to the actual environment. The cold and hot impact module can carry a sample through the sample frame to carry out cold and hot impact, then quickly convey the sample to the position below the drop hammer to complete drop hammer impact, and the time consumption of the whole process can be shortened to be within 2 seconds, so that the heat exchange of the sample is less, and the test precision is relatively high. In addition, the electromagnetic chuck is adopted to drive the impact frame to move towards the drop hammer, the problem that the service life of the directly-installed electric equipment is short on the sample frame is solved, and the impact frame can be rapidly moved to reduce the loss of sample heat.

Description

Drop hammer impact module and drop type impact test device thereof

Technical Field

The invention relates to impact test equipment, in particular to a falling body type impact test device.

Background

The impact test is mainly used for detecting the impact resistance of a material, and at present, the impact test mainly comprises modes of cold and hot impact, free falling body impact (such as a device recorded in the publication number CN 109374446A), pendulum impact (such as a device recorded in the publication number CN 209820974U) and the like, wherein the cold and hot impact mainly comprises the steps of placing a sample in a cold bin and a hot bin to alternately carry out extreme cold and hot impact so as to detect the stability of the sample after the impact of an extreme cold and hot environment, and at present, the impact test is mainly used for detecting electronic products; the free falling body impact mainly comprises the steps of lifting a drop hammer, placing a sample below the drop hammer, and then releasing the drop hammer to enable gravitational potential energy of the drop hammer to directly impact the sample for detecting the anti-striking performance of a sample material, wherein the device is widely used for testing glass, plastic parts and thin-wall sheet metal parts; pendulum impact functions similarly to free-fall impact, but it imparts greater kinetic energy to a pendulum used for centrifugation and is therefore used to test higher strength products such as metal slabs, tempered glass, and the like.

Pendulum impact devices are generally long due to the large impact energy required, and are generally bulky due to the need to add a shield to the portion of the device through which the pendulum may pass to prevent the device from breaking off after hitting an operator or breaking a sample during use. In the actual use process, because of the higher requirement on the new material at present, the strength of the material in an extreme temperature environment needs to be detected many times, and at this time, the material needs to be taken out and placed on pendulum impact equipment for an impact test after being applied for a certain time and at a certain temperature. Most typical of the current tests for detecting cold shortness is that a mechanical arm is used to place the sample in an extreme temperature environment, and then the sample is taken out and placed on a pendulum impact device for impact testing. Although this test method can partially reflect the strength of the material at extreme temperatures, the following defects exist: 1. only a single temperature test can be carried out, namely only heating or cooling can be carried out, and then the test cannot be carried out, and the temperature impact test cannot be carried out; 2. the sample is taken out and then transferred into the pendulum impact equipment, the time of about 10 seconds is at least needed, and the temperature of the sample in the time period is changed, so that a large error exists; 3. the pendulum bob impact can only reflect the whole impact strength of the sample, but cannot reflect the hardness, single-point impact resistance and the like of the material, and is not suitable for testing the samples such as aerospace materials, bulletproof materials, diving materials and the like. However, since the free-fall impact equipment obtains energy by completely adopting gravity acceleration and cannot simulate single-point impact with higher strength, the pendulum impact equipment is mainly adopted for testing at present so as to serve as a reference, and then the further actual test of the sample is carried out at the later stage. Obviously, the efficiency of research cannot be improved by the method, and once the later-stage test fails, all previous tests and samples are scrapped, so that a large amount of manpower and material resources are wasted, and precious time is wasted.

In view of the above, the inventors have devised a falling body type impact test apparatus capable of accelerating a falling weight and also performing cold and hot impacts on a sample.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a drop hammer impact module and a drop hammer impact testing apparatus thereof, wherein the drop hammer impact module is capable of accelerating an acceleration hammer through a solenoid to apply an initial kinetic energy to a drop hammer.

In order to achieve the purpose, the invention provides a drop hammer impact module which comprises a drop hammer pipe, a drop hammer and an accelerator, wherein the bottom of the drop hammer pipe is fixedly assembled with a splash-proof bottom plate, a hollow drop hammer channel is arranged in the drop hammer pipe, two sides of the drop hammer channel are respectively provided with a through drop hammer chute, and the drop hammer channel penetrates through the drop hammer pipe; a drop hammer is axially and slidably arranged in the drop hammer channel, and a first drop hammer ring groove and a second drop hammer ring groove are respectively arranged on the outer wall of the drop hammer along the axial direction of the drop hammer; in an initial state, the first drop hammer ring groove is clamped and assembled with one end of the upper lock block of the drop hammer, and the drop hammer is positioned at the topmost part of the drop hammer channel;

the bottom of the accelerator is provided with a hammer dropping pipe; the drop hammer channel is communicated with the inside of the accelerating inner cylinder; the accelerator comprises an accelerating inner cylinder, an electromagnetic coil and an accelerating outer cylinder, wherein an accelerating hammer is axially slidably arranged in the accelerating inner cylinder, the electromagnetic coil and the accelerating outer cylinder are sequentially sleeved outside the accelerating inner cylinder, and the accelerating hammer is made of magnetism; the bottom of the accelerating hammer is provided with a knocking part; the electromagnetic coil is electrified to drive the accelerating hammer to impact the drop hammer.

The invention also discloses a falling body type impact test device which is applied with the falling hammer impact module.

The invention has the beneficial effects that:

1. the invention has simple structure, can immediately carry out falling body impact test after carrying out cold and hot impact on the sample, thereby reflecting the strength of the sample closer to the actual environment.

2. The falling hammer impact module accelerates the accelerating hammer through the electromagnetic coil, so that the accelerating hammer applies initial energy to the falling hammer, impact potential energy larger than that of the pendulum bob can be obtained by combining the falling potential energy of the falling hammer, single-point impact can be simulated, and the mode has no pendulum bob space required by pendulum bob impact equipment and is smaller in size. Particularly, the falling weight speed during impact is detected by adopting the eddy current sensor, and the speed and the impact potential energy of the falling weight when contacting with a sample can be relatively accurately converted, so that the precision is higher, and the method is more suitable for testing the current special material.

3. The cold and hot impact module can carry a sample through the sample frame to carry out cold and hot impact, then quickly convey the sample to the position below the drop hammer to complete drop hammer impact, and the time consumption of the whole process can be shortened to be within 2 seconds, so that the heat exchange of the sample is less, and the test precision is relatively high. In addition, the electromagnetic chuck is adopted to drive the impact frame to move towards the drop hammer, so that the problem that the service life of the directly-installed electric equipment is short on the sample frame is solved, and the impact frame can be rapidly moved on the other hand, so that the heat loss of the sample is reduced.

Drawings

Fig. 1-4 are schematic structural views of the present invention.

Fig. 5-7 are schematic structural views of the cold-hot impact module.

Fig. 8-11 are schematic structural diagrams of the sample holder and the impact holder.

FIG. 12 is a schematic view of the structure of the magnetic side plate and the impact outer door.

Fig. 13-14 are schematic diagrams of the mechanism at the position of the side-shifting door frame and the side-shifting door.

Fig. 15-16 are schematic structural views of the heat insulation frame. Wherein figure 16 is a cross-sectional view at a central plane of one of the insulating passageway axes.

Figure 17 is a cross-sectional view of the door latch assembly at a central plane of the latch shaft axis.

Fig. 18 to 23 are schematic structural views of the drop hammer impact module. Wherein fig. 20 and 22 are respectively cross-sectional views of two mutually perpendicular central planes where the axes of the drop hammer channel are located; fig. 21 and 23 are enlarged views at F1 and F2 in fig. 20 and 22, respectively.

Fig. 24-25 are schematic views of the structure of the pull-up mechanism. Wherein fig. 25 is a sectional view at a center plane of the axis of the pull-up guide shaft.

FIG. 26 is a cross-sectional view of the latch mechanism at the center plane of the latch spindle axis.

Fig. 27-30 are schematic views of the crash mechanism.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 30, the falling body impact testing apparatus of the present embodiment includes:

the cold and hot impact module A is provided with a cold bin A121 and a hot bin A122 and is used for continuously moving the sample 100 from the cold bin A121 and the hot bin A122 so as to realize cold and hot impact;

and a drop hammer impact module B for dropping the sample 100 through a drop hammer B220 until the sample 100 is hit, thereby completing the drop hammer impact on the sample.

Referring to fig. 1 to 17, the thermal shock module a includes an electrical box a310, a top plate a110, and a box body a120, wherein the top plate a110 is installed above the electrical box a310, and the electrical box a310 is used for installing electrical equipment, which can be directly referred to the electrical box of the existing two-box thermal shock box. The box body A120 is installed on the top plate A110, a hollow inner bin is arranged in the box body A120, the inner bin is divided into a cold bin A121 and a hot bin A122 through a heat insulation frame A910, the temperature in the cold bin A121 is low, and the cold bin A121 is used for testing the state of the sample 100 in a low-temperature environment; the hot bin is at a higher temperature for testing the condition of the sample 100 in a high temperature environment. The temperature control mode of the cold bin A121 and the hot bin A122 can be directly realized by adopting the related technology of the existing similar temperature impact box. Preferably, at least two rows of heat insulation air holes a911 are arranged on the heat insulation frame a910, each row of heat insulation air holes a911 is respectively communicated with different heat insulation passages a912, one end of each heat insulation passage a912 is respectively communicated with an air outlet of a different air suction pump a350, and an inlet of an air suction pump communicated with the heat insulation passage a912 close to the cold bin a121 is communicated with the cold bin a 121; the inlet of the suction pump a350 communicating with the insulated passage a912 adjacent to the hot bin a122 communicates with the hot bin a 122. When the air-cooling type air-cooling device is used, air flow is continuously conveyed to the heat insulation channel A912 through the air suction pump, and is blown out from the heat insulation air holes A911 corresponding to the heat insulation channel A912, so that air walls are formed to divide the cold bin A121 and the hot bin A122, and the heat exchange and heat flow efficiency of the cold bin A121 and the hot bin A122 is reduced. The heat insulation frame A910 is further provided with a sample passage A913 for allowing the impact frame A500 to pass through, the sample passage A913 penetrates through the heat insulation frame A910, and the heat insulation air hole A911 is formed in the inner wall of the sample passage A913.

A sample rack is slidably arranged in the inner bin and comprises a sample bottom plate A820, a travelling wheel A840 is arranged at the bottom of the sample bottom plate A820 in a circumferential rotation mode, and the travelling wheel A840 is used for carrying the sample bottom plate A820 to move in the inner bin; the sample base plate A820 is provided with a sample guide block A850 on each side, the outer side of each sample guide block A850 is assembled with a sample sealing plate A810, the sample sealing plate A810 is clamped with the inner bin and assembled in a sliding mode, and the sample channel A913 on the heat insulation frame A910 can be sealed when the sample sealing plate A810 is attached to the end face of the heat insulation frame A910. Thereby realizing the sealing and the division between the cold bin A121 and the hot bin A122. One ends of the cold bin A121 and the hot bin A122, which are far away from the heat insulation frame A910, are respectively sealed through different bin end plates A123, and the bin end plates A123 and the heat insulation frame A910 are installed in the box body A120. Different bin doors A130 are respectively installed on one sides of the cold bin A121 and the hot bin A122, the two bin doors A130 can be respectively installed on the openings on one sides of the cold bin A121 and the hot bin A122 in a switchable manner, and the two bin doors A130 can seal the cold bin A121 and the hot bin A122 on the side after being closed to the cold bin A121 and the hot bin A122. This design is primarily for the convenience of opening the door a130 to load the sample 100 onto the impact rack a 500. One end of the sample base plate A820, which is close to the door A130, is provided with a side shifting limiting plate A830, and the side shifting limiting plate A830 is used for limiting the maximum displacement of the impact frame A500 to the door. The inner side of the sample guide block A850 is provided with a sample guide chute A851, the sample guide chute A851 is clamped with and slidably assembled with an impact guide strip A560 of an impact frame A500, the impact guide strip A560 is installed on the outer side of an impact frame side plate A510, the inner side of the impact frame side plate A510 is respectively assembled with two impact frame vertical plates A520, the bottoms of the two impact frame vertical plates A520 are installed on an impact frame bottom plate A550, a placing convex strip A511 and an impact frame partition plate A530 are sequentially installed between the two impact frame vertical plates A520 from top to bottom, the placing convex strip A511 is used for being attached to the bottom surface of a sample 100 to place the sample, an impact frame sliding plate A580 is installed between the placing convex strip A511 and the impact frame partition plate A530, the impact frame sliding plate A580 is respectively clamped with and slidably assembled with the two impact frame vertical plates A520 and the impact frame side plates A510 on four sides of the impact frame sliding plate A580, and the bottom of the impact frame sliding plate A580 is assembled, the impact frame sliding shaft A450 penetrates through an impact frame spring A760 and an impact frame partition plate A530 and then is assembled with an impact frame nut A451 in a screwing mode through threads, the impact frame nut A451 cannot penetrate through the impact frame partition plate A530, the impact frame sliding shaft A450 is assembled with the impact frame partition plate A530 in an axial sliding mode, and the impact frame spring A760 is used for applying elastic force for pushing the impact frame partition plate A530 towards the placing convex strip A511. In use, once the drop weight B220 breaks through the sample 100, it will contact the impact frame sliding plate a580, so as to absorb and buffer the residual energy of the drop weight B220 through the impact frame sliding plate a580 and the impact frame spring a 760. A magnetic attraction block A540 is arranged between the impact frame partition plate A530 and the impact frame bottom plate A550, and the magnetic attraction block A540 has magnetism or can be attracted by a magnet. The two ends of the impact frame bottom plate A550, which are positioned at the two sides of the magnetic block A540, are respectively provided with an impact locking groove A551, and the impact locking grooves A551 at the two ends can be respectively assembled with a first spring locking plate A770 and a first lock head A771 and a second elastic lock head A781 on a second elastic locking plate A780 in a clamping manner, so that the impact frame A500 is locked in the length direction of the impact guide strip A560. One end of the first spring lock plate A770 is arranged on the side shifting limit plate A830, and the other end of the first spring lock plate A770 is provided with a first lock head A771; one end of the second elastic locking plate a780 is installed on the impact outer door plate a941, and the other end is installed with a second elastic locking head a 781. Preferably, the impact guide bar a560 is provided with a guide ball a570 in a ball-shaped rolling manner, and the guide ball a570 and the sample guide groove a851 are placed in close contact with each other at the bottom surface, thereby reducing the friction between the impact guide bar a560 and the sample guide groove a 851.

Cold storehouse A121 is installed first magnetism corresponding to the bottom of box A120 and is inhaled end plate A931, first magnetism is inhaled end plate A931 and is inhaled end plate A932 through magnetism and be connected fixedly with second magnetism, second magnetism is inhaled end plate A932 and is installed on side shift frame A160, side shift frame A160 is last still to install side shift rail A161, side shift rail A161's top surface and sample guide way A851's bottom surface parallel and level to make impact guide bar A560 can wear out then get into side shift rail A161 from sample guide way A851 steadily on. Magnetism is inhaled and is provided with magnetism and inhale guide way A921 on curb plate A920, and magnetism is inhaled guide way A921 and is inhaled slide A950 one side block, slidable assembly, install magnetism on the slide A950 opposite side and inhale screw block A951, magnetism inhales screw block A951 suit and inhale screw rod A460 on and through the screw thread spiral assembly with it, magnetism inhales screw rod A460 both ends and inhales end plate A931, second magnetism respectively and inhales end plate A932 and can the circular rotation, the assembly of unable axial displacement, magnetism inhales screw rod A460 one end and inhales behind end plate A931 and inhale output shaft that motor A320 was moved to the side with magnetism and pass through the coupling joint fixed, magnetism is inhaled and can drive magnetism after motor A320 starts and inhale screw rod A460 circular rotation to slide A950 is inhaled along its axial displacement to the drive magnetism. Magnetism is inhaled and is installed electromagnet A360 on the slide A950, and electromagnet A360 circular telegram back produces magnetic field, inhales tightly through magnetic field and magnetism piece A540 to can drive and strike a500 synchronous motion when making magnetism inhale slide A950 and drive electromagnet A360 and remove, sample holder adopts can not make with the absorbent material of magnet, thereby avoids influencing sample holder. After the sample 100 finishes the cold and hot impact, the sample rack moves to the cold bin A121, and then the electromagnetic chuck starts to suck the magnetic suction block A540 by magnetic force; magnetism is inhaled and is moved motor A320 start to drive electromagnet A360 to second magnetism and inhale end plate A932 and remove, thereby drive and strike a500 synchronous motion, until strike guide strip A560 and break away from the sample frame, get into and move guide rail A161 to the side, last second elasticity tapered end A781 of second elasticity jam plate A780 clamps and locks in assaulting locked groove A551 and strike a500 can. This kind of non-contact orders about the removal, can avoid installing electrical equipment at sample frame, because the sample frame carries out cold and hot impact for a long time, consequently installation electrical equipment must seriously influence its life-span and stability, still increases wiring, stringing scheduling problem, and the mode that this embodiment adopted magnetism to inhale not only can realize the side and move the function, and the structure is very simple, can effectively reduce cost, increases the stability of equipment. In this embodiment, two impact frames a500 are drawn, and there is only one impact frame in practice, and the two impact frames a500 are only used to show a state that the two impact frames can be located in the cold bin a121 and wait for the impact of the drop hammer, and certainly, two impact frames may be used according to practical situations, without being limited by the present disclosure.

The two sample sealing plates A810 are respectively assembled and fixed with two ends of a stay rope A740, the stay rope A740 respectively passes through a corresponding bin end plate A123 and then respectively bypasses a plurality of guide wheels A741 and power wheels A742 to form a belt transmission moving mechanism, the guide wheels A741 and the power wheels A742 are respectively sleeved on a stay rope shaft A410 and a stay rope motor shaft A341, a plurality of stay rope shafts A410 are respectively and circularly rotatably installed on a stay rope shaft plate A140 and a stay rope extension plate A141, the stay rope shaft plate A140 and the stay rope extension plate A140 are both installed on a box body A120, the stay rope motor shaft A341 and the stay rope shaft plate A140 can be circularly rotatably assembled, one end of the stay rope shaft A341 is installed in the stay rope motor A340, the stay rope motor A340 can drive the stay rope motor shaft A341 to circularly rotate after being started, so as to drive the stay rope A740 to operate, and the sample rack can be. One end of the pull rope motor shaft A341, which is far away from the pull rope motor A340, is fixedly connected with the input shaft of the encoder A330, and the input shaft of the encoder can be driven to synchronously rotate when the pull rope motor shaft A341 rotates circumferentially, so that the rotation angle and the number of turns of the pull rope motor shaft A341 are detected, and finally, the displacement of the sample rack is calculated, and the displacement of the sample rack driven by the pull rope is controlled.

An output through groove A124 is arranged on the side wall of the box body A120 between the cold bin A121 and the impact outer door plate A941, a side-moving door frame A150 is arranged on the outer side of the output through groove A124, a door sliding groove A152 and an end sealing groove A151 are respectively formed between the side-moving door frame A150 and the box body A120, the door sliding groove A152 is clamped, sealed and slidably assembled with the upper side and the lower side of the side-moving door A750, the end sealing groove A151 is clamped and hermetically assembled with the end of the side-moving door A750, a rack A720 is arranged on the outer end face of the side-moving door A750, the rack A720 is meshed with a gear A710 to form a gear-rack transmission mechanism, the gear A710 is sleeved on a gear shaft A430, the gear shaft A430 is respectively circumferentially rotatably assembled with two door frame shaft plates A153, the door frame shaft plate A153 is arranged on the side-moving door frame A150, the bottom of the gear shaft A430 is sleeved and fixed with a first side-moving belt pulley A731, the first side-moving belt pulley A730 is, the second side-moving belt pulley A732 is sleeved on a belt pulley middle rotating shaft A440, the belt pulley middle rotating shaft A440 is fixedly connected with an output shaft of a side-moving door motor A370 through a coupler, the side-moving door motor A370 is installed on a side-moving door motor frame A125, and the side-moving door motor frame A125 is installed on a box body A120. After the side sliding door motor A370 is started, the belt wheel middle rotating shaft A440 can be driven to rotate circularly, so that the gear shaft A430 is driven to rotate circularly, and the gear shaft A430 is meshed with a gear and a rack to drive the side sliding door to move so as to open and close the output through groove A124. When the side shifting door A750 and the output shaft through groove A124 are closed, the output through groove A124 can be sealed, when the impact frame needs to output a cold bin to convey to a drop hammer, the side shifting door is opened, and the impact frame slides out of the cold bin to the side shifting guide rail.

Preferably, still install hinge mounting panel A162 on the side transfer frame A160, hinge mounting panel A162 is articulated with impact outer door A940 bottom through the hinge, impact outer door A940 is installed towards box A120 one side on and is strikeed outer door board A941. The top of the impact outer door A940 is locked on a side moving frame A160 through a door lock assembly A600, the door lock assembly A600 comprises a door lock side plate A960, a door lock block A620, a door lock shaft A630 and a door lock shell A610, the door lock side plate A960 is installed on the side moving frame A160, the door lock shell A610 is installed on the door lock plate A960, a door lock sliding groove A611 is arranged on the door lock shell A610, the door lock sliding groove A611 is clamped with the door lock block A620 and can be assembled in a sliding mode, one end of the door lock block A620 penetrates out of the door lock sliding groove A611 and is assembled and fixed with a door lock limiting ring A640, the door lock limiting ring A640 is assembled with one end of the door lock shaft A630, the other end of the door lock shaft A630 is sleeved with a door lock spring A650, penetrates out of the door lock side plate A680 and is assembled and fixed with the door lock nut A660 and the switch block A670 in sequence, the door lock nut A660 cannot penetrate through the door lock side plate A680, the door lock shaft A630 can be assembled and can be assembled, the door lock side plate A680 is fixedly assembled with the door lock shell A610 through a door lock connecting plate A681. One end of the door lock block A620, which is far away from the switch board A670, penetrates through the door lock sliding groove A611 and then is tightly attached to the outer end face of the impact outer door A940, so that the impact outer door is prevented from rotating, namely the impact outer door is locked. The door lock block A620 and the impact outer door A940 are respectively provided with a door lock block inclined plane A621 and an impact outer door inclined plane A942 on the sides close to each other. After the impact outer door is opened and is closed towards the door lock side plate A960, the impact outer door inclined plane A942 is attached to the door lock block inclined plane A621, so that the door lock block A620 is extruded, the door lock block is retracted into the door lock chute by overcoming the elastic force of the door lock spring until the impact outer door A940 passes through the rear door lock block and is reset under the elastic force of the door lock spring so as to lock the impact outer door. The openable design of the impact outer door A940 is mainly to facilitate taking out the impact frame from the side moving frame, so that the impact frame A500 after a test is cleaned, and the impact frame is installed at the impact outer door A940 after the cleaning is finished.

Referring to fig. 18-30, the drop hammer impact module B includes a first impact side plate B110, the bottom of the first impact side plate B110 is fixedly assembled with the box body a120, the top of the first impact side plate B110 is fixedly assembled with the impact secondary top plate B120, the impact secondary top plate B120 is fixedly assembled with the impact top plate B140 through two second impact side plates B130, the second impact side plate B130 is provided with a side plate chute B131, the side plate chute B131 is engaged with and slidably assembled with an upper pull slider B533 of an upper pull mechanism, the upper pull mechanism further includes an upper pull seat B530 and an upper pull end plate B510, the upper pull slider B533 is mounted on the side of the upper pull seat B530, the bottom of the upper pull seat B530 is provided with an upper pull seat bottom plate B532, the upper pull stress plate B560 is mounted on the upper pull seat bottom plate B532, the upper pull lock block groove B530 is provided with an upper pull lock block groove B531, the upper pull lock block groove B is engaged with and slidably assembled with an upper pull lock block B540, the upper pull lock block groove 531 is formed near one end of the upper pull lock block B550B and the upper pull lock groove B531, the upper pull lock plate B550 is fixedly assembled with one end of an upper pull guide shaft B410, the other end of the upper pull guide shaft B410 is sleeved with an upper pull spring B570 and an upper pull stress plate B560 and then assembled with an upper pull nut B411, the upper pull nut B411 cannot penetrate through the upper pull stress plate B560, the upper pull spring B570 is used for applying elastic force for pushing the upper pull lock plate B550 to a pull lock block B540, and the upper pull guide shaft B410 and the upper pull stress plate B560 can be axially assembled in a sliding manner; the upper zipper plate B550 is further assembled with one end of an upper stretching and contracting shaft B321, the other end of the upper stretching and contracting shaft B321 penetrates through the upper stretching stress plate B560 and then is installed in the upper pulling electromagnet B320, and after the upper pulling electromagnet B320 is electrified, the upper zipper plate B550 can be driven to overcome the elasticity of the upper pulling spring and upwards pull the stress plate B560 to move, so that the upper pulling lock block B540 is retracted into the upper pulling lock block groove B531.

The pull-up seat B530 and the pull-up seat bottom plate B532 are sleeved on the pull-up screw B420 and are assembled with the pull-up screw B420 in a screwing mode through threads, the top of the pull-up screw B420 penetrates through the impact top plate B140 and then is connected and fixed with an output shaft of the pull-up motor B310 through a coupler, the pull-up screw B420 and the impact top plate B140 can rotate circumferentially and cannot move axially, and the pull-up motor B310 can drive the pull-up screw B420 to rotate circumferentially after being started, so that the pull-up seat B530 and the pull-up seat bottom plate B532 are driven to move axially. The impact top plate B140 is provided with a travel switch B371, the triggering end of the travel switch B371 is opposite to the top surface of the pull-up end plate B510, when the pull-up end plate B510 moves upwards to a position closest to the impact top plate, the travel switch B371 is triggered, and the pull-up motor B310 stops and enters a reverse state after the travel switch B371 is triggered. One end of the upper zipper block B540, which is far away from the upper zipper plate B550, penetrates through the upper zipper block groove B531 to be attached to the bottom end face of the upper pull end plate B510, so that the upper pull end plate B510 cannot move downwards. Preferably, one end of the upper pulling end plate B510, which is close to the upper pulling lock block B540, is provided with an upper pulling end plate inclined plane B511, an upper pulling lock block inclined plane B541, respectively, and the upper pulling end plate inclined plane B511, the upper pulling lock block inclined plane B541 may be attached to each other. When the upper pull end plate B510 is positioned below the upper pull block B540 and the upper pull block B540 is required to move downwards to pass through the upper pull end plate B510 and then to be positioned below the upper pull end plate B510, the upper pull motor B310 is rotated reversely, so that the upper pull seat B530 is driven to move downwards until the inclined plane B511 of the upper pull end plate and the inclined plane B541 of the upper pull block are attached to each other, the upper pull seat B530 is continuously driven to move downwards, the inclined plane B511 of the upper pull end plate and the inclined plane B541 of the upper pull block are matched to press the upper pull block B540, the upper pull block B540 is retracted into the upper pull block groove B531, and the upper pull block B540 returns under the action of an upper pull spring after passing through the upper pull end plate B510; then the pull-up motor B310 rotates forward, so that the pull-up end plate B510 is driven by the pull-up locking block B540 to synchronously move up to the trigger travel switch, which is the reset of the pull-up end plate B510.

The upper pulling end plate B510 is installed at the top of the acceleration shaft B430, the bottom of the acceleration shaft B430 is installed in the acceleration inner cylinder B332 and is fixedly assembled with the acceleration hammer B431, the electromagnetic coil B333 and the acceleration outer cylinder B331 are sequentially sleeved outside the acceleration inner cylinder B332, and the acceleration hammer B431 is made of magnetism, such as neodymium magnet; the bottom of the accelerating hammer B431 is provided with a knocking part B432, the diameter of the knocking part B432 is smaller than that of the accelerating hammer B431, and the knocking part B432 and the accelerating hammer B431 are connected through a cone B433. The acceleration inner cylinder B332, the electromagnetic coil B333 and the acceleration outer cylinder B331 form an accelerator B330, the bottom of the accelerator B330 is provided with a drop hammer pipe B210, the bottom of the drop hammer pipe B210 is fixedly assembled with the splash-proof bottom plate B160, a hollow drop hammer channel B212 is arranged in the drop hammer pipe B210, two sides of the drop hammer channel B212 are respectively provided with a through drop hammer chute B211, the drop hammer channel B212 penetrates through the drop hammer pipe B210, and the top of the drop hammer channel B212 is communicated with the inside of the acceleration inner cylinder B332; a drop hammer B220 is axially slidably mounted in the drop hammer channel B212, and a first drop hammer ring groove B221 and a second drop hammer ring groove B222 are respectively arranged on the outer wall of the drop hammer B220 along the axial direction; in an initial state, the first drop hammer ring groove B221 is engaged with one end of a drop hammer locking block B670, the drop hammer B220 is located at the topmost part of the drop hammer channel B212, the other end of the drop hammer locking block B670 enters into a drop hammer locking plate groove B631 to be assembled with a drop hammer locking plate B651, and the drop hammer locking plate groove B631 is arranged in the drop hammer locking shell B630; the drop hammer locking plate B651 is also provided with a drop hammer unlocking block B640, the other end of the drop hammer unlocking block B640 penetrates through the drop hammer locking shell B630 and the drop hammer chute B211 and then enters the drop hammer channel B212, and the drop hammer chute B211 is clamped with the drop hammer locking block B670 and the drop hammer unlocking block B640 and can be axially assembled in a sliding manner along the drop hammer channel; the drop hammer locking block B670 and the drop hammer unlocking block B640 are respectively provided with a second inclined plane B672 and a first inclined plane B642, and the second inclined plane B672 is inclined upwards from the bottom to the top from one end close to the drop hammer lock case B630 to one end of the drop hammer channel B212; the first inclined plane B642 is arranged from top to bottom and is inclined downwards from one end close to the drop hammer lock shell B630 to one end of the drop hammer channel B212; the drop hammer locking plate B651 is also respectively assembled with one end of a drop hammer locking shaft B671 and one end of a drop hammer unlocking shaft B641, the other ends of the drop hammer locking shaft B671 and the drop hammer unlocking shaft B641 are assembled with an unlocking magnetic plate B620 after penetrating through a lock groove end plate B652, the parts of the drop hammer locking shaft B671 and the drop hammer unlocking shaft B641, which are positioned between the lock groove end plate B652 and the drop hammer locking plate B651, are respectively sleeved with a drop hammer pressure spring B660, the lock groove end plate B652 is installed at the open end of a drop hammer locking plate groove B631, the drop hammer pressure spring B660 is used for applying an elastic force to the drop hammer locking plate B651, the elastic force is pushed to the drop hammer channel B212, and the unlocking magnetic plate B620 can be adsorbed with a magnet.

An unlocking soft iron plate B342 is mounted at the top of the drop hammer tube B210 and outside the drop hammer lock shell B620, the unlocking soft iron plate B342 is mounted at one end of an unlocking soft iron shaft B343 and an unlocking shell B341, the unlocking soft iron shaft B343 is mounted on the impact clapboard B150, and the drop hammer lock shell B630 is also mounted on the impact clapboard B150; the outside cover of unblock soft iron axle B343 is equipped with unblock coil B344, unblock coil B344 produces the magnetic field after accessing the direct current, produces magnetic attraction to unblock magnetic sheet B620 through this magnetic field to it pulls to unblock soft iron sheet B342 to overcome the elasticity of drop hammer pressure spring B660 with unblock magnetic sheet B620, and it can to pull out first drop hammer annular B221 with the upper lock block B670 of drop hammer. The unlocking soft iron plate B342 and the unlocking soft iron shaft B343 are made of soft iron, and can be quickly magnetized after the unlocking coil B344 is electrified, so that magnetic attraction is generated on the unlocking magnetic plate B620. The impact partition plate B150 is assembled with the impact secondary top plate B120 through a secondary top connecting plate B121, a first wheel axle plate B151 is further installed on the impact partition plate B150, a first wheel axle B441 is installed on the first wheel axle plate B151, one end of the first wheel axle B441 is fixedly connected with an output shaft of a lifting motor B350 through a coupler, and the lifting motor B350 can drive the first wheel axle B441 to rotate circumferentially after being started. A first lifting belt wheel B711 is fixed on the first wheel axle B441 in a sleeved mode, the first lifting belt wheel B711 is connected with a second lifting belt wheel B712 through a lifting belt B710 to form a belt transmission mechanism, the second lifting belt wheel B712 is sleeved on a second wheel axle B442, the second wheel axle B442 is circumferentially and rotatably mounted on a second wheel axle plate B162, the second wheel axle plate B162 is mounted on the splash-proof bottom plate B160, and the splash-proof bottom plate B160 is assembled with the impact clapboard B150 through a bottom connecting plate B161. Splash floor B160 completely covers the top opening of impact frame A500, thereby preventing a broken sample from being flushed from impact frame A500 during testing.

Still be provided with pipe spout B213 on the hammer pipe B210 lateral wall that falls, pipe spout B213 and pipe slider B632 block, slidable assembly, hammer lock shell B630 that falls has two, and two hammer lock shell B630 that fall are close to lifting belt B710 one end and connect fixedly through hammer connecting plate B633 that falls, hammer connecting plate B633 and lifting belt B710 assembly are fixed, install lifting roller B720 between two hammer lock shell B630 that fall, but lifting roller B720 circumference rotation ground suit is on lifting roller axle B450, lifting roller axle B450 both ends respectively with two hammer lock shell B630 assemblies that fall, lifting roller B720 pastes tightly on hammer pipe B210's lateral wall that falls. When the lifting belt B710 runs, the falling hammer lock shell B630 can be driven to move along with the lifting belt B710, so that the falling hammer lock shell B630 is driven to move axially along the falling hammer pipe. After the falling hammer B220 impacts the sample, the bottom of the falling hammer B220 stays on the sample 100 or an impact frame clapboard A530, the top of the falling hammer is arranged in a falling hammer channel B212, a lifting belt B710 drives a falling hammer lock shell B630 to move downwards until a falling hammer upper block B670 is clamped in a first falling hammer ring groove B221, and then the lifting belt B710 moves reversely to drive the falling hammer B220 to move upwards to a preset height or reset.

The hammer that falls of this embodiment has two kinds of impact modes to sample 100, the first one is that the gravity that utilizes the hammer that falls self strikes sample 100, prevent the sample in splashproof bottom plate B160 below during the use at first, then unblock coil B344 circular telegram, will unblock magnetic sheet B620 and to unblock soft iron board B342 pulling through magnetic force, thereby make on the hammer that falls locking piece B670 withdraw from first hammer ring groove B221 that falls, fall and fall along hammer channel B212 whereabouts after losing the constraint, until pounding and accomplish the impact test to the sample on sample 100, can adjust the impact force through the initial altitude mixture control of adjusting the hammer that falls with the sample. If the drop hammer needs to have larger kinetic energy, the electromagnetic coil B333 is electrified with direct current to generate a magnetic field, the magnetic field can drive the accelerating hammer B431 to move downwards in an accelerating mode, and meanwhile the pull-up electromagnet B320 is electrified to pull the pull-up lock block B540 out of the pull-up end plate B510; when the acceleration hammer B431 moves towards the drop hammer in an accelerated mode, and the acceleration hammer B431 approaches the top surface of the drop hammer B220, the circular truncated cone body B433 is in contact with the drop hammer unlocking block B640, so that the drop hammer unlocking block B640 is pushed towards the drop hammer locking plate groove B631 by overcoming the elastic force of the drop hammer spring B660 until the acceleration hammer B431 and the knocking part B432 penetrate through the drop hammer unlocking block B640 and then impact the drop hammer B220, the drop hammer obtains an initial kinetic energy, and the drop hammer and the gravitational potential energy generated in the falling process act on a sample together to complete impact. When or before the accelerator B431 contacts the drop hammer unlocking block B640, the drop hammer locking block B670 exits the first drop hammer groove B221, thereby preventing the binding of the drop hammer from being not released when the accelerator B contacts the drop hammer. The current value of the electromagnetic coil can be adjusted according to different impact potential energy, so that different initial kinetic energy is applied to the drop hammer through different impact energy of the acceleration hammer. After the impact test is completed, the lifting motor B350 is started, the lifting motor B350 drives the drop hammer upper lock block B670 to move downwards through the lifting belt B710 to be assembled with the first drop hammer ring groove B221 in a clamping manner, and then the lifting motor B350 rotates reversely to drive the drop hammer B220 to move upwards to a preset height or reset along the drop hammer channel. In this embodiment, the drop hammer lock case B630, the drop hammer locking block B670, the drop hammer unlocking block B640, the drop hammer pressure spring B660, and the drop hammer locking plate B651 lock the groove end plate B632 to constitute a latch mechanism.

Preferably, in order to avoid the direct impact of the pull-up end plate B510 with the secondary impact plate B120, the inventor further mounts a buffer spring B610 on a portion of the acceleration shaft B430 close to the secondary impact plate B120, wherein two ends of the buffer spring B610 are respectively assembled with the secondary impact plate B120 and a buffer plate B520, and the buffer plate B520 is mounted on the acceleration shaft B430 in a sliding manner in the axial direction. After the upper pulling end plate B510 moves downwards, the upper pulling end plate B can be directly contacted with the buffer plate B520, so that the kinetic energy of the accelerating shaft and the accelerating hammer after the impact of the accelerating hammer falls is absorbed through the buffer spring B610.

Preferably, since the drop hammer B220 is likely to rebound after impacting the sample, if the rebound is not limited, the drop hammer B220 may hit the sample again to cause repeated impact, which seriously affects the testing accuracy; even after the falling hammer rebounds, the falling hammer moves upwards along the falling hammer channel to collide with the upper falling hammer block B670, so that the upper falling hammer block B670 is damaged. For this reason, the inventors considered that it is important to stop the drop hammer after striking the sample 100 in time, and even if the drop hammer cannot stop completely, the drop hammer should not be hit again on the sample 100 or the block B670 on the drop hammer is struck in a rebound manner. Based on the above reasons, the inventor has further designed an anti-collision mechanism, which includes an anti-collision vertical plate B230 and an anti-collision sliding shell B810, where the anti-collision vertical plate B230 is installed at the bottom of the hammer drop tube B210 and the splash-proof bottom plate B160, the anti-collision vertical plate B230 seals the opening at the bottom of the hammer drop channel B212, the anti-collision sliding shell B810 is installed outside the anti-collision vertical plate B230, the anti-collision sliding shell B810 is internally provided with a hollow anti-collision sliding chute B811, the anti-collision vertical plate B230 is provided with an anti-collision accommodating groove B231, an anti-collision clamping block B240 is installed in the anti-collision accommodating groove B231, the anti-collision clamping block B240 is assembled with one end of an anti-collision telescopic shaft B361, the other end of the anti-collision telescopic shaft B361 sequentially passes through an anti-collision sliding plate B820, a first anti-collision spring B831 and the anti-collision sliding shell B810 and then is installed in, The anti-collision sliding plate B820 is sleeved and fixed on the anti-collision telescopic shaft B820 in a sliding mode, and the first anti-collision spring B831 is sleeved on the part, located at one end, far away from the anti-collision vertical plate B230, of the anti-collision telescopic shaft B361 and located on the anti-collision sliding plate B820 and the anti-collision sliding groove B811 and used for applying elastic force for pushing the anti-collision telescopic shaft B361 to the anti-collision clamping block B240; in the initial state, the first anticollision spring B831 is in the compressed state, and the anticollision clamping block B240 does not enter the drop hammer channel B212, so that the impact on the passing of the drop hammer is avoided. The bottom of the anti-collision sliding plate B820 is further provided with an anti-collision sliding plate inclined plane B821, one end of the anti-collision sliding plate B820, which is close to the anti-collision vertical plate B230, is tightly attached to the side face of the anti-collision lock block B850, one end of the anti-collision lock block B850, which is in contact with the anti-collision sliding plate B820, is provided with an anti-collision lock block inclined plane B851, the other end of the anti-collision lock block B850, which penetrates through the anti-collision sliding shell B810, is sequentially assembled with one end of an anti-collision unlocking shaft B870 and one end of a second anti-collision sliding shaft B470, the anti-collision unlocking shaft B870 is sleeved with an anti-collision unlocking barrel B880 in a circumferential rotating manner, the anti-collision unlocking barrel B880 is tightly attached to the second anti-collision unlocking inclined plane B862, the second anti-collision unlocking inclined plane B862 is arranged on the anti-collision unlocking rod B860, one end of the anti-collision unlocking rod B860, which penetrates through the anti-collision tube B210 and enters the anti-collision channel B212, and the end of the anti-collision unlocking, the other end of the first anti-collision sliding shaft B460 penetrates through an anti-collision support plate B841 and then is assembled with a first anti-collision nut B461, the first anti-collision nut B461 cannot penetrate through the anti-collision support plate B841, the anti-collision support plate B841 is installed on an anti-collision base B840, the anti-collision base B840 is installed on an anti-collision vertical plate B230, a second anti-collision spring B832 is sleeved on the part, located between the anti-collision unlocking rod B860 and the anti-collision support plate B841, of the first anti-collision sliding shaft B460, and the second anti-collision spring B832 is used for applying elastic force to the anti-collision unlocking rod B860 to block the anti-collision unlocking rod B860 from moving towards the anti-collision support plate B841, so that in an initial state, one end of the. The first anti-collision sliding shaft B460 and the anti-collision support plate B841 are assembled in an axially sliding mode. The other end of the second anti-collision sliding shaft B470 penetrates through the anti-collision partition plate B250 and then is assembled with a second anti-collision nut B471, the second anti-collision nut B471 cannot penetrate through the anti-collision partition plate B250, the anti-collision partition plate B250 is installed on the anti-collision vertical plate B210, a third anti-collision spring B833 is sleeved on the part, located between the anti-collision partition plate B250 and the anti-collision unlocking shaft B870, of the second anti-collision sliding shaft B470, the third anti-collision spring B833 is used for applying elastic force for blocking the anti-collision unlocking shaft B870 to move downwards, and the second anti-collision sliding shaft B470 and the anti-collision partition plate B250 can be.

When the drop hammer B220 falls to contact with the second anti-collision unlocking slope B861, the drop hammer B220 applies a pushing force to the anti-collision release lever B860 to press the impact strip B841 through the second anti-collision unlocking slope B861, so that the anti-collision release lever B860 moves toward the impact strip B841 against the elastic force of the second anti-collision spring B832 until the drop hammer B220 hits the sample after passing through the anti-collision release lever B860. And in the process of moving the anti-collision unlocking rod B860, the anti-collision unlocking cylinder B880 is driven to move downwards through the second anti-collision unlocking inclined plane B862, so that the anti-collision lock block B850 is driven to move downwards against the elastic force of the third anti-collision spring B833 until the drop hammer B220 passes through the anti-collision unlocking rod B860, the anti-collision lock block B850 moves downwards to be separated from the anti-collision sliding plate B820, the anti-collision sliding plate B820 drives the anti-collision telescopic shaft B361 and the anti-collision clamping block B240 to move towards the drop hammer channel B212 under the elastic force of the first anti-collision spring B831, so that the anti-collision clamping block B240 is clamped with the drop hammer after impacting a sample to fix the drop hammer or reduce the kinetic energy of rebound of the drop hammer, and the anti-collision clamping block B240 can prevent the drop hammer from passing through the drop hammer channel after entering the drop hammer channel, so that secondary impact on the sample can be avoided, and the. After the drop hammer is static, crashproof electro-magnet circular telegram to drive crashproof slide, crashproof clamp splice reset, rethread latch mechanism will drop the hammer chucking, promote the belt and advance to drop hammer upwards to promote to predetermineeing the position after, crashproof electro-magnet loses the electricity, and crashproof unblock pole B860, crashproof locking piece B850, crashproof slide all reset, so that next operation.

In the embodiment, because a certain time is required for the elastic force of the spring to release, generally about 1 second, and a certain displacement amount exists when the anti-collision clamping block enters the drop hammer channel, the contact position of the drop hammer and the anti-collision unlocking rod B860 is very close to the sample 100 (the height is generally less than 5 cm from the sample), and the drop hammer falls at the moment, so that after the drop hammer unlocks the anti-collision sliding plate B820, the anti-collision clamping block cannot immediately enter the drop hammer channel, but has a certain reaction period, and the anti-collision clamping block can enter the anti-collision channel after the drop hammer collides with the sample, at the moment, three conditions exist, namely the drop hammer does not penetrate through the sample or the sample, and does not rebound, and at the moment, the drop hammer is clamped by the anti-collision clamping block B240; the second is that the drop hammer does not penetrate through the sample and rebounds, because the drop hammer has higher speed, the drop hammer can be directly clamped in the drop hammer channel by the anti-collision clamping block if the speed is lower after rebounding, and if the speed is higher, the drop hammer can be separated from the anti-collision clamping block after being clamped by the anti-collision clamping block and continuously moves upwards after being clamped by the anti-collision clamping block, but because the anti-collision clamping block consumes a large amount of kinetic energy and the anti-collision clamping block enters the drop hammer channel, the drop hammer cannot pound the sample again or rebound upwards to impact the drop hammer upper locking block B670; the third is that the drop hammer passes through the sample and bounces back, which is similar to the second case, and the drop hammer does not hit the sample again or hit the block B670 on the drop hammer due to the action of the bump block. In this embodiment, the time (displacement) when the anti-collision clamping block B240 enters the drop hammer channel and the time when the drop hammer hits the sample after passing through the impact release lock lever B860 can be planned, so as to ensure that the anti-rotation clamping block cannot enter the drop hammer channel to affect the kinetic energy of the drop hammer when the drop hammer does not hit the sample, thereby causing a large test error. In the embodiment, since the falling speed of the falling hammer is high, the impact-preventing lock release lever B860 has no time to enter the first falling hammer ring groove B221 and the second falling hammer ring groove B222, and thus the impact kinetic energy of the falling hammer is not affected. It is needless to say that the first drop weight ring groove B221, the second drop weight ring groove B222, and the impact release lever B860 may be formed in a staggered manner, so that the impact release lever B860 is completely prevented from entering the first drop weight ring groove B221, the second drop weight ring groove B222. In this embodiment, the outer wall of the drop hammer after passing through the anti-collision release bar B860 can be always kept in close contact with the anti-collision release bar B860, so that the drop hammer is prevented from rebounding to impact the anti-collision release bar B860 after passing through the anti-collision release bar B860, and the anti-collision release bar B860 is prevented from being damaged.

Preferably, the drop hammer vertical plate B230 is further provided with an eddy current sensor B372, the eddy current sensor B372 generates a potential change when the first drop hammer ring groove B221 and the second drop hammer ring groove B222 pass through, and the drop hammer speed can be calculated by the time when the first drop hammer ring groove B221 and the second drop hammer ring groove B222 pass through, so as to convert the kinetic energy of the impact of the drop hammer on the sample. The design of the tail end speed measurement can more accurately know the impact kinetic energy of the drop hammer, so that a test result is more accurately obtained, and test errors caused by air resistance and friction resistance are reduced; on the other hand, the position of the drop hammer can be detected, because the electric vortex sensor B372 generates an electric signal only when the drop hammer passes through, if the electric vortex sensor B372 outputs the electric signal after the drop hammer falls to impact a sample, the drop hammer is judged to be clamped by the anti-collision clamping block or positioned above the anti-collision clamping block; otherwise, it is determined that the drop weight is located below the eddy current sensor B372. Particularly, after the anti-collision clamping blocks rebound, the rebound speed can be detected by the eddy current sensor (the time interval for the first drop hammer ring groove B221 or the second drop hammer ring groove B222 to pass again can be detected by the eddy current sensor), so that the initial compression elasticity of the first anti-collision spring can be adjusted, and the degree of reducing the kinetic energy of the drop hammer can be adjusted. After the anti-collision electromagnet is used, the anti-collision electromagnet is started, the anti-collision clamping plate is pulled out of the falling hammer channel B212, then the falling hammer is lifted, and after the falling hammer is separated from the anti-collision unlocking rod B860, the anti-collision unlocking rod B860 and the anti-collision locking block B850 automatically reset.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A drop hammer impact module is characterized by comprising a drop hammer pipe, a drop hammer and an accelerator, wherein the bottom of the drop hammer pipe is fixedly assembled with a splash-proof bottom plate, a hollow drop hammer channel is arranged in the drop hammer pipe, two sides of the drop hammer channel are respectively provided with a through drop hammer chute, and the drop hammer channel penetrates through the drop hammer pipe; a drop hammer is axially and slidably arranged in the drop hammer channel, and a first drop hammer ring groove and a second drop hammer ring groove are respectively arranged on the outer wall of the drop hammer along the axial direction of the drop hammer; in an initial state, the first drop hammer ring groove is clamped and assembled with one end of the upper lock block of the drop hammer, and the drop hammer is positioned at the topmost part of the drop hammer channel;

the bottom of the accelerator is provided with a hammer dropping pipe; the drop hammer channel is communicated with the inside of the accelerating inner cylinder; the accelerator comprises an accelerating inner cylinder, an electromagnetic coil and an accelerating outer cylinder, wherein an accelerating hammer is axially slidably arranged in the accelerating inner cylinder, the electromagnetic coil and the accelerating outer cylinder are sequentially sleeved outside the accelerating inner cylinder, and the accelerating hammer is made of magnetism; the bottom of the accelerating hammer is provided with a knocking part; the electromagnetic coil is electrified to drive the accelerating hammer to impact the drop hammer.

2. The drop hammer impact module according to claim 1, further comprising a first impact side plate, wherein the bottom of the first impact side plate is fixedly assembled with the box body, the top of the first impact side plate is fixedly assembled with the impact sub top plate, the impact sub top plate is fixedly assembled with the impact top plate through two second impact side plates, the second impact side plate is provided with a side plate chute, the side plate chute is clamped with a pull-up slider of the pull-up mechanism and can be slidably assembled, the pull-up mechanism further comprises a pull-up base and a pull-up end plate, the pull-up slider is arranged on the side surface of the pull-up base, the bottom of the pull-up base is provided with a pull-up base plate, the pull-up base plate is provided with a pull-up stressed plate, the pull-up base is provided with a pull-up lock block groove, the pull-up lock block groove is clamped with the pull-up lock block and can be slidably assembled, one end of the pull-up lock block, which is close to the pull-up stressed, the upper pull locking plate is fixedly assembled with one end of an upper pull guide shaft, the other end of the upper pull guide shaft is sleeved with an upper pull spring, an upper pull stress plate and an upper pull nut, the upper pull nut cannot penetrate through the upper pull stress plate, and the upper pull spring is used for applying elastic force for pushing the upper pull locking plate to the pull locking block; the upper pull guide shaft and the upper pull stress plate can be assembled in an axial sliding mode; the upper zipper plate is also assembled with one end of the upper stretching and retracting shaft, and the other end of the upper stretching and retracting shaft penetrates through the upper stretching stress plate and then is installed in the upper pulling electromagnet; one end of the upper zipper block, which is far away from the upper zipper plate, penetrates through the upper zipper block groove to be attached to the bottom end face of the upper pull end plate, so that the upper pull end plate cannot move downwards;

the upper pulling end plate is arranged at the top of the accelerating shaft, and the bottom of the accelerating shaft is arranged in the accelerating inner cylinder and is assembled and fixed with the accelerating hammer.

3. The drop hammer impact module according to claim 2, wherein the pull-up seat and the pull-up seat bottom plate are sleeved on a pull-up screw and are assembled with the pull-up screw in a screwing manner through threads, the top of the pull-up screw penetrates through the impact top plate and then is fixedly connected with an output shaft of a pull-up motor, and the pull-up screw and the impact top plate can be assembled in a circumferential rotating manner and cannot move axially;

the part of the accelerating shaft close to the secondary impact top plate is sleeved with a buffer spring, two ends of the buffer spring are respectively assembled with the secondary impact top plate and a buffer plate, and the buffer plate is sleeved on the accelerating shaft and can be axially assembled with the accelerating shaft in a sliding mode.

4. The drop hammer impact module according to claim 2, wherein a travel switch is mounted on the impact top plate, an activation end of the travel switch faces a top surface of the pull-up end plate, the travel switch is activated when the pull-up end plate moves up to a position closest to the impact top plate, and the pull-up motor is stopped and enters a reverse rotation state after the travel switch is activated; the upper end plate and the upper zipper block are close to one end and are respectively provided with an upper end plate inclined plane and an upper zipper block inclined plane, and the upper end plate inclined plane and the upper zipper block inclined plane can be attached to each other.

5. The drop hammer impact module according to claim 1, wherein the latch mechanism comprises a drop hammer locking block, a drop hammer locking plate, a drop hammer locking housing, and a drop hammer unlocking block, wherein the other end of the drop hammer locking block enters a drop hammer locking plate groove to be assembled with the drop hammer locking plate, and the drop hammer locking plate groove is arranged in the drop hammer locking housing; the other end of the drop hammer unlocking block penetrates through the drop hammer lock shell and the drop hammer chute and then enters the drop hammer channel, and the drop hammer chute is clamped with the drop hammer upper locking block and the drop hammer unlocking block and can be axially assembled in a sliding manner along the drop hammer channel;

the drop hammer locking plate is respectively assembled with one end of a drop hammer upper locking shaft and one end of a drop hammer unlocking shaft, the other ends of the drop hammer upper locking shaft and the drop hammer unlocking shaft are sleeved with a locking groove end plate and then assembled with an unlocking magnetic plate, drop hammer pressure springs are respectively sleeved on the parts, located between the locking groove end plate and the drop hammer locking plate, of the drop hammer upper locking shaft and the drop hammer unlocking shaft, the locking groove end plate is installed at the opening end of a drop hammer locking plate groove, the drop hammer pressure springs are used for applying elastic force for pushing the drop hammer locking plate to a drop hammer channel, and the unlocking magnetic plate can be adsorbed with a magnet; the diameter of the knocking part is smaller than that of the accelerating hammer, and the knocking part is connected with the accelerating hammer through a cone; when or before the accelerating hammer contacts with the drop hammer unlocking block, the drop hammer locking block exits from the first drop hammer ring groove.

6. The drop hammer impact module according to claim 5, wherein the drop hammer pipe is further provided with a pipe chute on the side wall, the pipe chute is engaged with and slidably assembled with the pipe slider, the drop hammer lock casing is provided with two drop hammer lock casings, one ends of the two drop hammer lock casings, which are close to the lifting belt, are connected and fixed through a drop hammer connecting plate, the drop hammer connecting plate is assembled and fixed with the lifting belt, a lifting roller is arranged between the two drop hammer lock casings, the lifting roller is circumferentially and rotatably sleeved on a lifting roller shaft, two ends of the lifting roller shaft are respectively assembled with the two drop hammer lock casings, and the lifting roller is tightly attached to the side wall of the drop hammer pipe;

the second inclined plane and the first inclined plane are respectively arranged on the upper lock block of the drop hammer and the unlocking block of the drop hammer, and the second inclined plane is inclined upwards from bottom to top from one end close to the lock shell of the drop hammer to one end of the drop hammer channel; the first inclined plane is arranged from top to bottom in a manner that the first inclined plane is inclined downwards from one end close to the drop hammer lock shell to one end of the drop hammer channel.

7. The drop hammer impact module according to claim 5, wherein an unlocking soft iron plate is mounted on the top of the drop hammer pipe and outside the drop hammer lock housing, the unlocking soft iron plate is mounted on an unlocking soft iron shaft mounted on the impact spacer and one end of the unlocking outer housing, the drop hammer lock housing is also mounted on the impact spacer; an unlocking coil is sleeved outside the unlocking soft iron shaft, the unlocking coil generates a magnetic field after being connected with direct current, and magnetic attraction is generated on the unlocking magnetic plate through the magnetic field; the unlocking soft iron plate and the unlocking soft iron shaft are both made of soft iron.

8. The drop hammer impact module according to claim 7, wherein the impact partition plate is assembled with the impact secondary top plate through a secondary top connecting plate, a first axle plate is further installed on the impact partition plate, a first axle is installed on the first axle plate, and one end of the first axle is fixedly connected with an output shaft of the lifting motor; a first lifting belt wheel is fixedly sleeved on the first wheel shaft, the first lifting belt wheel is connected with a second lifting belt wheel through a lifting belt to form a belt transmission mechanism, the second lifting belt wheel is sleeved on a second wheel shaft, the second wheel shaft is circumferentially and rotatably arranged on a second wheel shaft plate, the second wheel shaft plate is arranged on a splash-proof bottom plate, and the splash-proof bottom plate is assembled with the impact partition plate through a bottom connecting plate; the splash back completely covers the top opening of the impact frame.

9. The drop hammer impact module according to any one of claims 1 to 8, further comprising an anti-collision mechanism, wherein the anti-collision mechanism comprises an anti-collision vertical plate and an anti-collision sliding shell, the anti-collision vertical plate is mounted at the bottom of the drop hammer pipe and on the splash-proof bottom plate, the anti-collision vertical plate seals an opening at the bottom of the drop hammer channel, the anti-collision sliding shell is mounted on the outer side of the anti-collision vertical plate, a hollow anti-collision chute is formed in the anti-collision sliding shell, an anti-collision accommodating groove is formed in the anti-collision vertical plate, an anti-collision clamping block is mounted in the anti-collision accommodating groove, the anti-collision clamping block is assembled with one end of an anti-collision telescopic shaft, and the other end of the anti; the first anti-collision spring is sleeved on the part of the anti-collision telescopic shaft, which is positioned at one end of the anti-collision sliding plate and the anti-collision sliding groove, which is far away from the anti-collision vertical plate, and is used for applying elastic force for pushing the anti-collision clamping block to the anti-collision telescopic shaft; in the initial state, the first anti-collision spring is in a compressed state, and the anti-collision clamping block does not enter the drop hammer channel;

the bottom of the anti-collision sliding plate is also provided with an anti-collision sliding plate inclined surface, one end of the anti-collision sliding plate, which is close to the anti-collision vertical plate, is tightly attached to the side surface of the anti-collision locking block, one end of the anti-collision locking block, which is in contact with the anti-collision sliding plate, is provided with an anti-collision locking block inclined surface, the other end of the anti-collision locking block penetrates through the anti-collision sliding shell and is sequentially assembled with one end of an anti-collision unlocking shaft and one end of a second anti-collision sliding shaft, the anti-collision unlocking shaft is sleeved with an anti-collision unlocking cylinder in a circumferential rotating manner, the anti-collision unlocking cylinder is tightly matched with the second anti-collision unlocking inclined surface, the second anti-collision unlocking inclined surface is arranged on the anti-collision unlocking rod, one end of the anti-collision unlocking rod, which passes through the anti-collision pipe and enters the anti-collision channel, the other end of the first anti-collision sliding shaft penetrates through the anti-collision support plate and then is assembled with a first anti-collision nut, the first anti-collision nut cannot penetrate through the anti-collision support plate, the anti-collision support plate is installed on an anti-collision base, the anti-collision base is installed on the anti-collision vertical plate, a second anti-collision spring is sleeved on the part, located between the anti-collision unlocking rod and the anti-collision support plate, of the first anti-collision sliding shaft, and the second anti-collision spring is used for applying elastic force to the anti-collision unlocking rod to prevent;

the first anti-collision sliding shaft and the anti-collision support plate can be axially assembled in a sliding mode, the other end of the second anti-collision sliding shaft penetrates through the anti-collision partition plate and then is assembled with a second anti-collision nut, the second anti-collision nut cannot penetrate through the anti-collision partition plate, the anti-collision partition plate is installed on the anti-collision vertical plate, a third anti-collision spring is sleeved on the part, located between the anti-collision partition plate and the anti-collision unlocking shaft, of the second anti-collision sliding shaft, the third anti-collision spring is used for applying elastic force to the anti-collision unlocking shaft to prevent the anti-collision unlocking shaft from moving downwards, and the;

and an eddy current sensor is also arranged on the drop hammer vertical plate, and the eddy current sensor generates potential change when the first drop hammer ring groove and the second drop hammer ring groove pass through.

10. A falling-weight impact test device, characterized in that a falling-weight impact module according to any one of claims 1-9 is applied.

Images