An electromagnetic cyclic impact test device and method thereof

Abstract

The present invention discloses an electromagnetic cyclic impact test device and a method thereof, belonging to the technical field of impact tests. The following solution is now proposed. It includes an electromagnetic test mechanism, and a test enclosure mechanism is assembled on the electromagnetic test mechanism. The electromagnetic test mechanism includes a frame, an incident rod, and a transmission rod. An electromagnetic test assembly is arranged on the frame. The test enclosure mechanism includes a housing, and the housing is fixedly installed on one side of the frame; in the present invention, the moving adjustment cavity drives the transmission assembly to move, so that the cooperation between the ball and the inclined groove realizes the transmission between the transmission assembly and the adjustable feeding assembly, causing the specimen table to turn and tilt, and then the residue on the surface of the specimen table can be poured into the cavity. And during the pouring process, dust removal operation can be carried out in cooperation with the dust removal assembly to maintain a good test environment, thereby achieving the purpose of automatic cleaning, reducing the operation steps and difficulty. Secondly, the residue is collected through the cavity, and the residue can be conveniently cleaned through the side door.

Description

Technical Field

[0001] The present invention relates to the technical field of impact tests, and particularly relates to an electromagnetic cyclic impact test device and a method thereof. Background Art

[0002] Impact tests are used to evaluate the impact resistance of rocks and are widely applied in the fields of underground engineering and seismic structure design. At present, the Hopkinson bar test is the main test method for rock impact tests. Its impact bar is mainly driven by compressed air, and sufficient charging time needs to be reserved between two tests. Therefore, it is difficult to be applicable to cyclic impact tests. At the same time, pneumatic bars have problems such as low speed control accuracy and poor repeatability. Moreover, during impact tests, high-speed impacts may break the rocks, which not only easily causes harm to personnel, but also after the test, rock fragments will remain on the surface of the placement table, making it inconvenient for quick cleaning. As a result, a long time is required for cleaning before the next test, making it difficult to continuously conduct multiple tests. And during subsequent cleaning or sample placement and retrieval processes, if the equipment is accidentally started, it is very easy to cause harm to the cleaning personnel.

[0003] In view of the above problems, the present invention document proposes an electromagnetic cyclic impact test device and a method thereof. Summary of the Invention

[0004] The purpose of the present invention is to solve the drawbacks in the prior art that mainly uses compressed air to drive impact equipment, and sufficient charging time needs to be reserved between two tests, so it is difficult to be applicable to cyclic impact tests. At the same time, pneumatic bars have problems such as low speed control accuracy and poor repeatability. Moreover, during impact tests, high-speed impacts may break the rocks, which not only easily causes harm to personnel, but also after the test, rock fragments will remain on the surface of the placement table, making it inconvenient for quick cleaning. As a result, a long time is required for cleaning before the next test, making it difficult to continuously conduct multiple tests. And during subsequent cleaning or sample placement and retrieval processes, if the equipment is accidentally started, it is very easy to cause harm to the cleaning personnel, and to propose an electromagnetic cyclic impact test device and a method thereof.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An electromagnetic cyclic impact test device includes an electromagnetic test mechanism, and a test enclosure mechanism is assembled on the electromagnetic test mechanism;

[0007] The electromagnetic test mechanism includes a frame, an incident bar, and a transmission bar, and an electromagnetic test assembly is arranged on the frame;

[0008] The test enclosure mechanism includes a housing fixedly installed on one side of the frame. Above the housing, there is a dust removal component. Inside the housing, there is an adjustable sealing component. In the adjustable sealing component, there are two adjustable feeding components. Below the adjustable sealing component, there are two transmission components, and a positioning component arranged side by side with the transmission components. Above the positioning component, there is a switch activation component.

[0009] The transmission component penetrates through the adjustable sealing component and drives the adjustable feeding component. There are two inclined slots and two straight slots on the transmission component. The two ends of the two straight slots are connected to the two inclined slots. An elastic component is arranged in one of the straight slots, and the elastic component is arranged on the bottom wall of the housing. There are two positioning ports on the bottom wall of the housing.

[0010] Preferably, the electromagnetic test component includes a coil backing plate fixedly installed on the frame. Above the coil backing plate, there is a coil group. Above the coil group, there is a slider. Above the slider, there is an impact rod. The slider slides on two guide rails, and the two ends of the two guide rails are fixed on the frame.

[0011] On the frame, near the side of the electromagnetic test component, there are two second damping pistons installed corresponding to the slider. On the side of the frame far from the electromagnetic test component, there is a first damping piston installed. On the frame, there is also a first bearing support platform. The incident rod is arranged in the first bearing support platform. On both sides of the housing, there are second bearing support platforms. The incident rod passes through one of the second bearing support platforms and enters the housing. The transmission rod penetrates into the other second bearing support platform, and the transmission rod corresponds to the first damping piston.

[0012] Preferably, the dust removal component includes a collection box installed above the housing. The collection box is connected to a dust collector, and the dust collector is connected to a dust removal head arranged on one side of the housing.

[0013] Preferably, the adjustable sealing component includes an adjustment cavity divided into two cavities. In one of the cavities of the adjustment cavity, there is a support plate fixedly connected. The bottom of the cavity is inclined. There are side doors on the front and back of the adjustment cavity. On both sides of the adjustment cavity, there are sliding strips that slide in the slide rails, and the slide rails are fixed on the side walls of the housing.

[0014] Preferably, the positioning component includes a rotating shaft with handles fixedly connected to both ends. The rotating shaft is rotatably installed below the adjustment cavity through two first bearing members. There are three cams fixedly connected to the rotating shaft. Between the two first bearing members, there are first torsion springs fixedly installed. The first torsion springs are sleeved outside the rotating shaft, and the other ends of the two first torsion springs are respectively fixedly connected to the two cams.

[0015] Below each of the two cams is provided with a convex ball, a positioning rod is fixedly connected below the convex ball, the positioning rod penetrates through a positioning cover, and a first spring is fixedly connected between the bottom wall of the positioning cover and the convex ball. One of the positioning rods is inserted into a positioning port, and the positioning cover is fixed on the adjustment cavity.

[0016] Preferably, the switch starting assembly includes a cross bar, the two ends of the cross bar are fixed between two positioning covers, a roller rod penetrates through the middle of the cross bar, the lower part of the roller rod is in contact with the middle cam, a stopper is fixed at the top end of the roller rod, a second spring is fixed between the stopper and the cross bar, and the upper part of the stopper is in contact with the main switch. The main switch is installed below the adjustment cavity.

[0017] Preferably, the adjustable feeding assembly includes a specimen table located in the cavity. One of the specimen tables is in contact with the upper part of the support plate. A rotating rod is fixed on one side of the specimen table. The rotating rod is rotatably installed in the adjustment cavity through a second bearing member. One end of a second torsion spring is fixed on the rotating rod, and the other end of the second torsion spring is fixed to the second bearing member. The second torsion spring is sleeved outside the rotating rod, and a third bevel gear is fixed on the rotating rod.

[0018] Preferably, the transmission assembly includes a connecting shaft, a fixing plate and a rotating roller. A first bevel gear is fixed on the rotating roller. The rotating roller is rotatably installed on the adjustment cavity and the fixing plate through two bearings. The fixing plate is fixed below the adjustment cavity. A straight groove and an inclined groove are formed on the rotating roller. The groove depth of one of the inclined grooves decreases from bottom to top, and the groove depth at the end of one of the straight grooves is the same as the deepest groove depth of the inclined groove;

[0019] The connecting shaft is rotatably installed on the adjustment cavity through a bearing. Second bevel gears are fixed at both ends of the connecting shaft, and the two second bevel gears are respectively meshed with the first bevel gear and the third bevel gear.

[0020] Preferably, the elastic assembly includes a telescopic rod and a third spring. The telescopic rod and the third spring are fixed on the bottom wall of the housing. The top ends of the telescopic rod and the third spring are fixedly connected with a ball. The ball is arranged in the straight groove.

[0021] A use method of an electromagnetic cyclic impact test device includes the following steps:

[0022] S1. When conducting a rock impact test, power is supplied through the coil group according to the test requirements. The slider moves along the guide rail under the action of the Ampere force, and collides with the incident rod through the impact rod to generate an impact load. The incident rod enters the adjustment cavity, so that the stress wave is transmitted along the incident rod to the specimen placed on the specimen table, and finally transmitted to the transmission rod, thereby conducting the test operation of the impact stress;

[0023] S2. After the impact test, the residues left by the impact enter the cavity of the adjustment chamber. Then, when a new round of test operation is carried out, by rotating the handle to drive the rotation of the rotating shaft, the rotating shaft drives the rotation of the cam, the cam drives the first torsion spring to twist. At the same time, the convex surface of the cam disengages from the convex ball, so that the first spring drives the positioning rod to move upward out of the positioning port. Then, the adjustment chamber is moved, the transmission assembly follows the movement, the ball enters the inclined groove and drives the roller to rotate, the roller drives the first bevel gear to drive with the second bevel gear, then the connecting shaft drives the second bevel gear to drive with the third bevel gear, and the rotating rod drives the specimen table to flip, so that the residue on the specimen table enters the cavity for collection, and the extended cavity cooperates with the dust removal assembly to carry out dust removal operation. When the ball moves linearly through the straight groove and enters the inclined groove again, the roller rotates in reverse. At this time, the specimen table flips back to contact with the support plate;

[0024] S3. When the adjustment chamber with residues remaining after the test extends out of the housing, the two cavities of the adjustment chamber exchange positions. At this time, the torsion of the first torsion spring drives the rotation of the rotating shaft to reset, so that the convex surface of the cam presses the positioning rod to insert into the positioning port through the convex ball for positioning. And the cam also presses the roller rod to drive the block to move upward, so that the block abuts against the main switch. Then, a new round of impact test operation is continued.

[0025] Compared with the prior art, the present invention provides an electromagnetic cyclic impact test device and method, having the following beneficial effects:

[0026] 1. For the electromagnetic cyclic impact test device and method, by moving the adjustment chamber to drive the movement of the transmission assembly, the cooperation of the ball and the inclined groove realizes the transmission between the transmission assembly and the adjustable feeding assembly, makes the specimen table flip and tilt, and then the residue on the surface of the specimen table can be poured into the cavity. And during the pouring process, the dust removal assembly can be cooperated to carry out dust removal operation to maintain a good test environment, so as to achieve the purpose of automatic cleaning, reduce the operation steps and difficulty. Secondly, the residue is collected through the cavity, and the residue can be conveniently cleaned through the side door.

[0027] 2. For the electromagnetic cyclic impact test device and method, by moving the position of the adjustment chamber, the adjustment chamber drives the movement of the transmission assembly. Through the cooperation of the inclined groove and the elastic component, the transmission between the transmission assembly and the adjustable feeding assembly can be realized, and the adjustable feeding assembly can be tilted to pour materials. And when the elastic component enters another inclined groove, at this time, the adjustable feeding assembly automatically flips and resets, so as to facilitate the stable placement of the sample. Secondly, by moving the adjustment chamber, the positions of the two cavities of the adjustment chamber are quickly switched, so as to switch the positions of the two adjustable feeding assemblies, thus facilitating the quick conduct of the next round of impact test, and continuous test operation can be realized through the switching.

[0028] 3. The electromagnetic cyclic impact test device and its method. After switching the positions of the two cavities in the adjustment chamber, the torsion of the first torsion spring drives the rotation of the rotating shaft and the cam, causing the cam to squeeze the positioning rod downward. At the same time, the cam squeezes the roller rod. If the positioning rod does not accurately engage in the positioning port, the stopper cannot press the main switch at this time, so the overall power-off operation can be maintained to avoid accidental touch. Moreover, the position of the adjustment chamber is switched to separate the test area from the cleaning and loading / unloading areas, thus preventing test accidents caused by accidental touch.

[0029] 4. The electromagnetic cyclic impact test device and its method. By energizing the coil group, the driving force for the slider can be provided. The slider can move along the guide rail, the impact rod impacts the incident rod, and the transmission rod is used to cooperate with the impact on the rock sample. In this way of impact test, the control accuracy of the impact speed is high, and the charging time interval of the cyclic impact test is low, which is suitable for high-precision rock cyclic impact tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a perspective view of an electromagnetic cyclic impact test device proposed by the present invention;

[0031] Figure 2 is a sectional perspective view of an electromagnetic cyclic impact test device proposed by the present invention;

[0032] Figure 3 is a perspective view of the dust removal component of an electromagnetic cyclic impact test device proposed by the present invention;

[0033] Figure 4 is a perspective view of the adjustable sealing component of an electromagnetic cyclic impact test device proposed by the present invention;

[0034] Figure 5 is a sectional perspective view of the adjustable sealing component of an electromagnetic cyclic impact test device proposed by the present invention;

[0035] Figure 6 is a sectional perspective view of the adjustment chamber of an electromagnetic cyclic impact test device proposed by the present invention;

[0036] Figure 7 In the present invention Figure 6 is an enlarged view of part A;

[0037] Figure 8 In the present invention Figure 6 is an enlarged view of part B;

[0038] Figure 9 is a view showing the connection between the adjustment chamber and the adjustable feeding component of an electromagnetic cyclic impact test device proposed by the present invention;

[0039] Figure 10View of the adjustable feeding component of an electromagnetic cyclic impact test device proposed by the present invention connected to the transmission component;

[0040] Figure 11 In the present invention Figure 10 Enlarged view of part C.

[0041] In the figure: 100, electromagnetic test mechanism; 101, frame; 102, electromagnetic test component; 1021, coil backing plate; 1022, guide rail; 1023, slider; 1024, impact rod; 1025, coil group; 103, first bearing block; 104, incident rod; 105, transmission rod; 106, first damping piston; 107, second damping piston; 200, test enclosure mechanism; 201, housing; 202, dust removal component; 2021, collection box; 2022, dust collector; 2023, dust removal head; 203, adjustable sealing component; 2031, adjustment cavity; 2032, slide bar; 2033, support plate; 2034, side door; 2035, slide rail; 204, positioning component; 2041, rotating shaft; 2042, handle; 2043, cam; 2044, positioning cover; 2045, convex ball; 2046, first spring; 2047, positioning rod; 2048, first bearing part; 2049, first torsion spring; 205, second bearing block; 206, switch activation component; 2061, cross bar; 2062, second spring; 2063, main switch; 2064, stop block; 2065, roller rod; 207, adjustable feeding component; 2071, specimen table; 2072, rotating rod; 2073, third bevel gear; 2074, second torsion spring; 2075, second bearing part; 208, transmission component; 2081, second bevel gear; 2082, connecting shaft; 2083, fixing plate; 2084, first bevel gear; 2085, rotating roller; 209, elastic component; 2091, ball; 2092, third spring; 2093, telescopic rod; 210, positioning port; 211, straight groove; 212, inclined groove. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0043] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0044] Reference Figures 1 to 11 , an electromagnetic cyclic impact test device, comprising an electromagnetic test mechanism 100, and a test enclosure mechanism 200 is assembled on the electromagnetic test mechanism 100;

[0045] The electromagnetic test mechanism 100 includes a frame 101, an incident rod 104 and a transmission rod 105. An electromagnetic test assembly 102 is provided on the frame 101. The electromagnetic test assembly 102 includes a coil backing plate 1021 which is fixedly installed on the frame 101. A coil group 1025 is installed above the coil backing plate 1021. By energizing the coil group 1025, a driving force can be provided for the slider 1023 through the Ampere force. A slider 1023 is provided above the coil group 1025. An impact rod 1024 is installed above the slider 1023. The slider 1023 slides on two guide rails 1022. The guide rails 1022 can guide the slider 1023 to maintain the smooth movement of the slider 1023. Both ends of the two guide rails 1022 are fixed on the frame 101. The frame 101 can stably support the whole device. Two second damping pistons 107 are installed on one side of the frame 101 close to the electromagnetic test assembly 102. The second damping pistons 107 correspond to the slider 1023. The first damping piston 106 and the second damping pistons 107 can absorb the residual stress waves of the transmission rod 105 and the slider 1023, prevent the stress waves from reflecting again to generate errors, and at the same time avoid the impact between the slider 1023 and the frame 101 to damage the equipment. A first damping piston 106 is installed on the side of the frame 101 away from the electromagnetic test assembly 102. A first bearing support 103 is also installed on the frame 101. The first bearing support 103 and the second bearing support 205 can keep the stable sliding of the incident rod 104 and the transmission rod 105. The incident rod 104 is arranged in the first bearing support 103. Second bearing supports 205 are installed on both sides of the outer shell 201. The incident rod 104 passes through one of the second bearing supports 205 and enters the outer shell 201. The transmission rod 105 penetrates into the other second bearing support 205, and the transmission rod 105 corresponds to the first damping piston 106.

[0046] In some embodiments, the test enclosure mechanism 200 includes an outer shell 201 which is fixedly installed on one side of the frame 101 (such as Figure 1On the upper side of the left side shown, a dust removal component 202 is provided above the outer shell 201. The dust removal component 202 includes a collection box 2021, and the collection box 2021 is installed above the outer shell 201. The collection box 2021 is communicated with a dust collector 2022. The dust collector 2022 can perform dust suction operations through a dust removal head 2023, and the purpose of dust collection is achieved through the collection box 2021 to maintain a good test environment. The dust collector 2022 is communicated with the dust removal head 2023, and the dust removal head 2023 is arranged on one side of the outer shell 201. An adjustable sealing component 203 is arranged inside the outer shell 201. The adjustable sealing component 203 includes an adjustment cavity 2031. Both sides of the adjustment cavity 2031 are open, enabling the incident rod 104 and the transmission rod 105 to smoothly conduct impact tests with the rock sample. Moreover, the adjustment cavity 2031 and the outer shell 201 can play a role in protecting the test area. Secondly, a thermostat can also be added to the adjustment cavity 2031 for rock cyclic impact tests at different temperatures. The adjustment cavity 2031 is divided into two cavities. A support plate 2033 is fixedly connected in one of the cavities of the adjustment cavity 2031. The bottom of the cavity is inclined. The bottom of the cavity is set to be inclined so that the residue can accumulate along the inclined surface at the position of the side door 2034. In this way, by opening the side door 2034, it is convenient to clean the residue. Side doors 2034 are provided at the front and rear of the adjustment cavity 2031. Slide bars 2032 are fixedly arranged on both sides of the adjustment cavity 2031. The slide bars 2032 slide in the slide rails 2035. The slide bars 2032 can slide smoothly through the slide rails 2035, so that the adjustment cavity 2031 is adjusted smoothly. The slide rails 2035 are fixed on the side wall of the outer shell 201. Two adjustable feeding components 207 are arranged in the adjustable sealing component 203. Two transmission components 208 are arranged below the adjustable sealing component 203. The transmission component 208 includes a connecting shaft 2082, a fixing plate 2083, and a roller 2085. A first bevel gear 2084 is fixed on the roller 2085. The roller 2085 is rotatably installed on the adjustment cavity 2031 and the fixing plate 2083 through two bearings. The fixing plate 2083 is fixed below the adjustment cavity 2031. A straight groove 211 and an inclined groove 212 are opened on the roller 2085. The groove depth of one of the inclined grooves 212 decreases from bottom to top. The groove depth at the end of one of the straight grooves 211 is the same as the deepest groove depth of the inclined groove 212. When the ball 2091 is located at the deepest notch of the straight groove 211, the third spring 2092 can drive the ball 2091 to further penetrate into the straight groove 211, and the deep notch can block the ball 2091 to prevent the ball 2091 from moving along the straight groove 211 again, enabling the ball 2091 to smoothly move along the inclined groove 212. Secondly, due to the groove depth of the inclined groove 212 decreasing upward, the third spring 2092 can be deformed to store elastic potential energy, and the cooperation between the ball 2091 and the inclined groove 212 realizes the rotational movement of the roller 2085. The connecting shaft 2082 is rotatably installed on the adjustment cavity 2031 through a bearing. Second bevel gears 2081 are fixed at both ends of the connecting shaft 2082,Two second bevel gears 2081 are respectively engaged with a first bevel gear 2084 and a third bevel gear 2073. Through the second bevel gear 2081, power transmission can be achieved between the first bevel gear 2084 and the third bevel gear 2073, so as to facilitate the rotation of the connecting shaft 2082 and the rotating rod 2072, and a positioning component 204 arranged side by side with the transmission component 208. The positioning component 204 includes a rotating shaft 2041. Both ends of the rotating shaft 2041 are fixedly connected with handles 2042. By using the handles 2042 as the force application points, it is convenient to control the rotation of the rotating shaft 2041. The rotating shaft 2041 is rotatably installed below the adjustment cavity 2031 through two first bearing members 2048. The first bearing members 2048 can assist the rotating shaft 2041 to rotate stably. Three cams 2043 are fixedly connected to the rotating shaft 2041. A first torsion spring 2049 is fixed between the two first bearing members 2048. The torsion force of the first torsion spring 2049 is greater than the elastic forces of the first spring 2046 and the second spring 2062, so that the first torsion spring 2049 can smoothly drive the rotating shaft 2041 to rotate and reset. When the cam 2043 rotates, it can squeeze the convex ball 2045 and the roller rod 2065 through the convex surface to move, so that the positioning rod 2047 is inserted into the positioning port 210 to lock the position of the adjustment cavity 2031. The first torsion spring 2049 is sleeved outside the rotating shaft 2041, and the other ends of the two first torsion springs 2049 are respectively fixedly connected to the two cams 2043. Below two of the cams 2043, there are convex balls 2045. The convex ball 2045 is fixedly connected with a positioning rod 2047 below. The positioning rod 2047 passes through the positioning cover 2044. A first spring 2046 is fixedly connected between the bottom wall of the positioning cover 2044 and the convex ball 2045. Through the first spring 2046, the positioning rod 2047 can be driven to disengage from the positioning port 210, so as to facilitate the movement of the adjustment cavity 2031. One of the positioning rods 2047 is inserted into one of the positioning ports 210. The positioning cover 2044 is fixed on the adjustment cavity 2031. A switch starting component 206 is arranged above the positioning component 204.

[0047] In some embodiments, the transmission assembly 208 passes through the adjustable sealing assembly 203 and drives the adjustable discharging assembly 207. The adjustable discharging assembly 207 includes a specimen table 2071. The specimen table 2071 is located in the cavity and can be used to place rock samples. One of the specimen tables 2071 contacts the upper side of the support plate 2033. A rotating rod 2072 is fixed to one side of the specimen table 2071. The rotating rod 2072 is rotatably installed in the adjustment cavity 2031 through a second bearing member 2075. The rotating rod 2072 can perform a smooth rotational movement through the second bearing member 2075. One end of a second torsion spring 2074 is fixed to the rotating rod 2072. The torque of the second torsion spring 2074 can drive the specimen table 2071 to flip downward, so that the specimen table 2071 contacts the support plate 2033 downward, thereby maintaining the stability of the specimen table 2071. The other end of the second torsion spring 2074 is fixed to the second bearing member 2075. The second torsion spring 2074 is sleeved outside the rotating rod 2072. A third bevel gear 2073 is fixed to the rotating rod 2072. Two inclined slots 212 and two straight slots 211 are formed in the transmission assembly 208. The two ends of the two straight slots 211 communicate with the two inclined slots 212. An elastic assembly 209 is provided in one of the straight slots 211. The elastic assembly 209 includes a telescopic rod 2093 and a third spring 2092. The restoring force of the third spring 2092 can apply a force to the ball 2091, so that the ball 2091 stably slides in the inclined slot 212 and the straight slot 211, and the telescopic rod 2093 can maintain the stable telescoping of the roller. The telescopic rod 2093 and the third spring 2092 are fixed to the bottom wall of the housing 201. The top ends of the telescopic rod 2093 and the third spring 2092 are fixedly connected to the ball 2091. The ball 2091 is arranged in the straight slot 211. The elastic assembly 209 is arranged on the bottom wall of the housing 201. Two positioning ports 210 are formed in the bottom wall of the housing 201.

[0048] In such an embodiment, by moving the adjustment cavity 2031 to drive the transmission assembly 208 to move, the ball 2091 is matched with the inclined slot 212 to realize the rotation of the roller 2085. The roller 2085 drives the first bevel gear 2084 to drive the second bevel gear 2081, so that the connecting shaft 2082 rotates, and drives the third bevel gear 2073 to drive through the second bevel gear 2081, so that the rotating rod 2072 drives the specimen table 2071 to flip and tilt, and then the residue on the surface of the specimen table 2071 can be poured into the cavity. And during the pouring process, the dust removal assembly 202 can be cooperated to perform dust removal operations to maintain a good test environment, so as to achieve the purpose of automatic cleaning, reduce the operation steps and difficulty. Secondly, the residue is collected through the cavity, and the residue can be conveniently cleaned through the side door 2034.

[0049] Refer to Figure 1 、 Figures 3 to 6 and Figure 10, An electromagnetic cyclic impact test device, including an adjustable sealing assembly 203. The adjustable sealing assembly 203 includes an adjustment cavity 2031 which is divided into two cavities. A support plate 2033 is fixedly connected in one of the cavities of the adjustment cavity 2031. The bottom of the cavity is inclined. Side doors 2034 are provided at the front and rear of the adjustment cavity 2031. Slide bars 2032 are fixed on both sides of the adjustment cavity 2031. The slide bars 2032 slide in slide rails 2035, and the slide rails 2035 are fixed on the side wall of the outer shell 201.

[0050] In some embodiments, the test closing mechanism 200 includes an outer shell 201. An adjustable sealing assembly 203 is arranged inside the outer shell 201. Two adjustable feeding assemblies 207 are arranged in the adjustable sealing assembly 203. Two transmission assemblies 208 are arranged below the adjustable sealing assembly 203. The transmission assemblies 208 penetrate through the adjustable sealing assembly 203 and are in transmission connection with the adjustable feeding assemblies 207. Two inclined slots 212 and two straight slots 211 are formed on the transmission assemblies 208. The two ends of the two straight slots 211 are communicated with the two inclined slots 212. An elastic assembly 209 is arranged in one of the straight slots 211.

[0051] In such an embodiment, by moving the position of the adjustment cavity 2031, the adjustment cavity 2031 drives the transmission assembly 208 to move. Through the cooperation of the inclined slot 212 and the elastic assembly 209, the transmission assembly 208 can be in transmission connection with the adjustable feeding assembly 207, so that the adjustable feeding assembly 207 can be tilted to pour materials. And when the elastic assembly 209 enters the other inclined slot 212, at this time, the adjustable feeding assembly 207 automatically flips and resets, so as to facilitate keeping the sample stably placed. Secondly, by moving the adjustment cavity 2031, the positions of the two cavities of the adjustment cavity 2031 can be quickly switched, so as to switch the positions of the two adjustable feeding assemblies 207, thus facilitating the quick conduct of the next round of impact test, and continuous test operation can be realized through the switching.

[0052] Refer to Figure 6 、 Figures 8 to 10, An electromagnetic cyclic impact test device, comprising a test enclosure mechanism 200. The test enclosure mechanism 200 includes a housing 201, which is fixedly installed on one side (such as the left side) of the frame 101. Above the housing 201, there is a dust removal component 202. Inside the housing 201, there is an adjustable sealing component 203. In the adjustable sealing component 203, there are two adjustable feeding components 207. Below the adjustable sealing component 203, there are two transmission components 208, and a positioning component 204 arranged side by side with the transmission components 208. Above the positioning component 204, there is a switch starting component 206. The switch starting component 206 includes a cross bar 2061. The two ends of the cross bar 2061 are fixed between two positioning covers 2044. In the middle of the cross bar 2061, there is a roller rod 2065 passing through. By the cam 2043 squeezing the roller rod 2065 to move, the rolling property of the roller rod 2065 reduces the frictional resistance, so that the roller rod 2065 can push up the stop block 2064 to move. When the stop block 2064 contacts the main switch 2063, the device can be kept powered on. The lower part of the roller rod 2065 is lapped with the middle cam 2043. The top end of the roller rod 2065 is fixed with a stop block 2064. Between the stop block 2064 and the cross bar 2061, there is a second spring 2062. By the second spring 2062 driving the stop block 2064 to reset, the stop block 2064 is away from the main switch 2063, so as to realize the power-off operation of the device. Above the stop block 2064, it contacts the main switch 2063. The main switch 2063 is installed below the adjustment cavity 2031. The transmission component 208 penetrates the adjustable sealing component 203 and is in transmission connection with the adjustable feeding component 207. On the transmission component 208, there are two inclined slots 212 and two straight slots 211. The two ends of the two straight slots 211 are communicated with the two inclined slots 212. In one of the straight slots 211, there is an elastic component 209. The elastic component 209 is arranged on the bottom wall of the housing 201. On the bottom wall of the housing 201, there are two positioning ports 210.

[0053] In such an embodiment, after switching the positions of the two cavities of the adjustment cavity 2031, the torsion of the first torsion spring 2049 drives the rotating shaft 2041 and the cam 2043 to rotate, so that the cam 2043 squeezes the positioning rod 2047 to move downward. At the same time, the cam 2043 squeezes the roller rod 2065. If the positioning rod 2047 does not accurately engage in the positioning port 210, at this time, the stop block 2064 cannot press the main switch 2063, so as to keep the overall power-off operation and avoid accidental touch. And the adjustment cavity 2031 switches positions, separating the test area from the cleaning and loading / unloading areas, so as to prevent test accidents caused by accidental touch.

[0054] Continue to refer to Figures 1 to 11 , A method for using an electromagnetic cyclic impact test device, comprising the following steps:

[0055] S1. When conducting a rock impact test, the coil group 1025 supplies power according to the test requirements. The slider 1023 moves along the guide rail 1022 under the action of the Ampere force, and generates an impact load through the impact rod 1024 colliding with the incident rod 104. The incident rod 104 enters the adjustment cavity 2031, enabling the stress wave to be transmitted along the incident rod 104 to the specimen placed on the specimen table 2071, and finally transmitted to the transmission rod 105, thereby conducting the test operation of impact stress;

[0056] S2. After the impact test, the residues left by the impact enter the cavity of the adjustment cavity 2031. Then, when a new round of test operation is carried out, by rotating the handle 2042 to drive the rotation of the rotating shaft 2041, the rotating shaft 2041 drives the rotation of the cam 2043. The cam 2043 drives the first torsion spring 2049 to twist. At the same time, the convex surface of the cam 2043 disengages from the convex ball 2045, enabling the first spring 2046 to drive the positioning rod 2047 to move upward out of the positioning port 210. Then, the adjustment cavity 2031 is moved, causing the transmission assembly 208 to move accordingly, enabling the ball 2091 to enter the inclined groove 212 and drive the roller 2085 to rotate. The roller 2085 drives the first bevel gear 2084 to be transmitted with the second bevel gear 2081, and the connecting shaft 2082 drives the second bevel gear 2081 to be transmitted with the third bevel gear 2073. Moreover, the rotating rod 2072 drives the specimen table 2071 to flip, enabling the residues on the specimen table 2071 to enter the cavity for collection, and the extended cavity cooperates with the dust removal assembly 202 to perform dust removal operations. When the ball 2091 linearly moves through the straight groove 211 and enters the inclined groove 212 again, the roller 2085 rotates in reverse. At this time, the specimen table 2071 flips back to contact with the support plate 2033;

[0057] S3. When the adjustment cavity 2031 with residues remaining after the test extends out of the housing 201, the two cavities of the adjustment cavity 2031 exchange positions. At this time, the torsion of the first torsion spring 2049 drives the rotating shaft 2041 to rotate and reset. The convex surface of the cam 2043 presses the positioning rod 2047 through the convex ball 2045 to insert into the positioning port 210 for positioning. Moreover, the cam 2043 also presses the roller rod 2065 to drive the stopper 2064 to move upward, enabling the stopper 2064 to abut against the main switch 2063. Then, a new round of impact test operation is continued.

[0058] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. An electromagnetic cyclic impact test device, characterized in that: It comprises an electromagnetic testing mechanism (100), wherein a testing sealing mechanism (200) is mounted on the electromagnetic testing mechanism (100); The electromagnetic test mechanism (100) comprises a frame (101), an incident rod (104) and a transmission rod (105); an electromagnetic test assembly (102) is arranged on the frame (101); The test sealing mechanism (200) comprises a housing (201), wherein the housing (201) is fixedly mounted on one side of a frame (101), a dust removal assembly (202) is arranged above the housing (201), an adjustable sealing assembly (203) is arranged inside the housing (201), two adjustable discharge assemblies (207) are arranged in the adjustable sealing assembly (203), two transmission assemblies (208) and a positioning assembly (204) arranged side by side with the transmission assembly (208) are arranged below the adjustable sealing assembly (203), and a switch start assembly (206) is arranged above the positioning assembly (204); The transmission component (208) passes through the adjustable sealing component (203) and transmits power to the adjustable discharging component (207); two inclined grooves (212) and two straight grooves (211) are provided on the transmission component (208); both ends of the two straight grooves (211) are connected to the two inclined grooves (212); an elastic component (209) is provided in one of the straight grooves (211); the elastic component (209) is provided on the bottom wall of the housing (201); and two positioning openings (210) are provided on the bottom wall of the housing (201); The transmission assembly (208) comprises a connecting shaft (2082), a fixed plate (2083) and a rotating roller (2085); a first bevel tooth (2084) is fixed on the rotating roller (2085); the rotating roller (2085) is rotatably mounted on the adjusting cavity (2031) and the fixed plate (2083) via two bearings; the fixed plate (2083) is fixed below the adjusting cavity (2031); the straight groove (211) and the inclined groove (212) are formed on the rotating roller (2085); the groove depth of one of the inclined grooves (212) decreases from bottom to top; and the groove depth at the end of one of the straight grooves (211) is the same as the deepest groove depth of the inclined groove (212).

2. The electromagnetic cyclic impact test device according to claim 1, characterized in that: The electromagnetic test assembly (102) comprises a coil pad (1021), the coil pad (1021) is fixedly mounted on the frame (101), a coil group (1025) is mounted above the coil pad (1021), a slider (1023) is provided above the coil group (1025), an impact rod (1024) is mounted above the slider (1023), the slider (1023) slides on two guide rails (1022), and both ends of the two guide rails (1022) are fixed on the frame (101); Two second damping pistons (107) are installed on the side of the frame (101) close to the electromagnetic test assembly (102), and the second damping pistons (107) correspond to the slider (1023). A first damping piston (106) is installed on the side of the frame (101) away from the electromagnetic test assembly (102). A first bearing support platform (103) is also installed on the frame (101), and the incident rod (104) is arranged in the first bearing support platform (103). Second bearing support platforms (205) are installed on both sides of the housing (201), and the incident rod (104) passes through one of the second bearing support platforms (205) to enter the housing (201), and the transmission rod (105) passes through the other second bearing support platform (205), and the transmission rod (105) corresponds to the first damping piston (106).

3. The electromagnetic cyclic impact test device according to claim 2, characterized in that: The dust removal component (202) comprises a collection box (2021), the collection box (2021) is installed above the outer shell (201), the collection box (2021) is connected to a dust collector (2022), the dust collector (2022) is connected to a dust removal head (2023), and the dust removal head (2023) is arranged on one side of the outer shell (201).

4. The electromagnetic cyclic impact test device according to claim 3, characterized in that: The adjustable sealing component (203) comprises an adjusting cavity (2031), wherein the adjusting cavity (2031) is divided into two cavities, a support plate (2033) is fixedly connected to one of the cavities of the adjusting cavity (2031), the bottom of the cavity is an inclined surface, side doors (2034) are provided at the front and rear of the adjusting cavity (2031), and sliding bars (2032) are fixed on both sides of the adjusting cavity (2031), wherein the sliding bars (2032) slide in sliding rails (2035), and the sliding rails (2035) are fixed on the side walls of the housing (201).

5. The electromagnetic cyclic impact test device according to claim 4, characterized in that: The positioning assembly (204) comprises a rotating shaft (2041), both ends of the rotating shaft (2041) are fixedly connected to handles (2042), the rotating shaft (2041) is rotatably mounted below the adjustment chamber (2031) via two first bearing members (2048), three cams (2043) are fixedly connected to the rotating shaft (2041), a first torsion spring (2049) is fixed between the two first bearing members (2048), the first torsion spring (2049) is sleeved outside the rotating shaft (2041), and the other ends of the two first torsion springs (2049) are respectively fixedly connected to the two cams (2043); A convex ball (2045) is provided below each of the two cams (2043), a positioning rod (2047) is fixedly connected below the convex ball (2045), the positioning rod (2047) penetrates a positioning cover (2044), a first spring (2046) is fixedly connected between the bottom wall of the positioning cover (2044) and the convex ball (2045), one of the positioning rods (2047) is inserted into a positioning opening (210), and the positioning cover (2044) is fixed on the adjustment cavity (2031).

6. The electromagnetic cyclic impact test device according to claim 5, characterized in that: The switch start component (206) comprises a horizontal bar (2061), the two ends of the horizontal bar (2061) are fixed between two positioning covers (2044), a roller rod (2065) is passed through the middle of the horizontal bar (2061), the lower part of the roller rod (2065) overlaps the middle cam (2043), a stopper (2064) is fixed at the top of the roller rod (2065), a second spring (2062) is fixed between the stopper (2064) and the horizontal bar (2061), the upper part of the stopper (2064) contacts the main switch (2063), and the main switch (2063) is installed below the adjustment chamber (2031).

7. The electromagnetic cyclic impact test device according to claim 6, characterized in that: The adjustable discharge assembly (207) comprises a sample table (2071), the sample table (2071) is located in the cavity, one of the sample tables (2071) is in contact with the top of the support plate (2033), a rotating rod (2072) is fixed on one side of the sample table (2071), the rotating rod (2072) is rotatably mounted in the adjustment cavity (2031) via a second bearing member (2075), one end of a second torsion spring (2074) is fixed to the rotating rod (2072), the other end of the second torsion spring (2074) is fixed to the second bearing member (2075), the second torsion spring (2074) is sleeved outside the rotating rod (2072), and a third bevel tooth (2073) is fixed to the rotating rod (2072).

8. The electromagnetic cyclic impact test device according to claim 7, characterized in that: The connecting shaft (2082) is rotatably mounted on the adjustment cavity (2031) via a bearing, and second bevel teeth (2081) are fixed to both ends of the connecting shaft (2082), and the two second bevel teeth (2081) are respectively meshed with the first bevel teeth (2084) and the third bevel teeth (2073).

9. The electromagnetic cyclic impact test device according to claim 8, characterized in that: The elastic component (209) comprises a telescopic rod (2093) and a third spring (2092); the telescopic rod (2093) and the third spring (2092) are fixed on the bottom wall of the housing (201); the top ends of the telescopic rod (2093) and the third spring (2092) are fixedly connected to a ball (2091); and the ball (2091) is disposed in the straight groove (211).

10. The method for using the electromagnetic cyclic impact test device according to claim 9, characterized in that: The following steps are involved: S1. When performing a rock impact test, the coil group (1025) is powered according to the test requirements, the slider (1023) moves along the guide rail (1022) under the action of the Ampere force, and collides with the incident rod (104) through the impact rod (1024) to generate an impact load. The incident rod (104) enters the adjustment cavity (2031), so that the stress wave is transmitted along the incident rod (104) to the sample placed on the sample table (2071), and finally transmitted to the transmission rod (105), thereby performing an impact stress test operation; S2. After the impact test, the residue left by the impact enters the cavity of the adjustment chamber (2031). Then, when a new round of test operation is carried out, the handle (2042) is turned to drive the rotating shaft (2041) to rotate, so that the rotating shaft (2041) drives the cam (2043) to rotate, and the cam (2043) drives the first torsion spring (2049) to twist. At the same time, the convex surface of the cam (2043) is separated from the convex ball (2045), so that the first spring (2046) drives the positioning rod (2047) to move upward and out of the positioning port (210), and then the adjustment chamber (2031) is moved, so that the transmission assembly (208) moves accordingly, so that the ball (2091) enters the inclined groove (212) and drives the rotating shaft (2043). The roller (2085) rotates, the rotating roller (2085) drives the first bevel gear (2084) and the second bevel gear (2081) to transmit, the connecting shaft (2082) drives the second bevel gear (2081) and the third bevel gear (2073) to transmit, and the rotating rod (2072) drives the sample table (2071) to flip, so that the residue on the sample table (2071) enters the cavity for collection, and the extended cavity cooperates with the dust removal component (202) to perform dust removal operation, when the ball (2091) passes through the straight groove (211) and moves linearly to enter the inclined groove (212) again, the rotating roller (2085) is reversed, and at this time the sample table (2071) flips and resets to contact the support plate (2033); S3. After the test, when the regulating cavity (2031) with the residue remaining therein extends out of the housing (201), the two cavities of the regulating cavity (2031) are exchanged. At this time, the torque of the first torsion spring (2049) drives the rotating shaft (2041) to rotate and reset, so that the convex surface of the cam (2043) squeezes the positioning rod (2047) through the convex ball (2045) to insert into the positioning port (210) for positioning, and the cam (2043) also squeezes the roller rod (2065) to drive the stopper (2064) to move upward, so that the stopper (2064) contacts the main switch (2063), and then a new round of impact test operation is continued.

Images