CN206352152U - The ultrasonic impact device of girth joint in a kind of pipe - Google Patents

Abstract

The utility model discloses an ultrasonic impact device for an inner ring weld in a pipe. The device comprises a support system, a moving system, an impact system, a rotation system, a motor control system, a lighting lamp, a positioning camera and a camera controller. The support system is connected to the moving system through screws; the moving system is also connected to the rotating system through screws; the impact system is installed on the rotating system through screws; the motor control system is installed between the driven wheels in the moving system; lighting, positioning cameras Both the camera controller and the camera controller are installed on the rotating system, and the installation position is opposite to the installation position of the impact system. The utility model has the advantages that: the equipment can automatically perform ultrasonic impact treatment on the annular welds inside the annular welded parts such as pipelines and pressure vessels, so as to reduce welding residual stress, and the appearance of the welding surface can reduce stress concentration.

Description

An ultrasonic impact device for inner girth welds in pipes

technical field

The utility model relates to the field of metal welding, in particular to an automatic ultrasonic impact device for inner ring welds in pipes, which is used for improving the stress distribution of inner ring welds of ring welds such as pipelines and pressure vessels, and improving the comprehensiveness of welded joints. performance.

Background technique

Ring-shaped weldments such as pipes and pressure vessels will produce coarse grains and residual tensile stress at the weld during the welding process, and a non-arc transition angle between the weld reinforcement and the base metal will cause stress concentration. For pipes and As far as the pressure vessel is concerned, the residual tensile stress is harmful to the welded structure. Studies have shown that both the residual tensile stress and stress concentration will cause cracks in the welded structure to cause fatigue fracture, and damage such as stress corrosion cracking, thereby reducing the weldment to a great extent. service life, causing safety hazards. In order to improve the weld quality of circular weldments such as pipelines and pressure vessels, it is necessary to refine grains, remove residual stress and reduce stress concentration on weldments after welding. Ultrasonic impact technology is a metal material surface strengthening technology. Its basic principle is to use an ultrasonic generator to generate ultrasonic waves, and then input the ultrasonic vibration energy into the metal material through the punch at the front end of the ultrasonic transducer. The surface temperature of the material rises rapidly and then cools down rapidly, resulting in large compressive plastic deformation and grain refinement on the surface of the metal material, and beneficial changes in the surface metal structure, thereby improving the surface strength and mechanical properties of the metal parts. Ultrasonic impact technology has the advantages of simple operation, low energy consumption, high efficiency, and wide adaptability, and is an effective method for surface strengthening of metal materials.

At present, the ultrasonic impact equipment for the surface treatment of welds basically handles the welds by manually holding the impact gun, which not only has high labor intensity but also low production efficiency, and the welds inside the pipeline must be manually processed More difficult and inconvenient. At present, Yin Yu, Wang Bingying and others from China University of Petroleum have designed and applied for a patent for the automatic ultrasonic impact device for the outer ring weld of the pipeline. The patent number is: CN 103952531 B. The design of seam automatic ultrasonic impact device has not been reported yet. Based on the above background, it is of great significance to design an automatic ultrasonic impact device for internal circular welds of pipelines to improve the weld quality of circular welded parts such as pipelines and pressure vessels.

Contents of the invention

The purpose of the utility model is to improve the quality of the annular welds of the annular welded parts such as pipelines and pressure vessels. Stress, increase the transition angle between the solder and the base metal to reduce stress concentration.

The technical scheme of the utility model is: an ultrasonic impact device for the inner ring weld of the pipe, the device includes a support system, a moving system, an impact system, a rotation system, a motor control system, a lighting lamp, a positioning camera, and a camera controller; the support system Connected with the moving system through screws; the moving system is also connected with the rotating system through screws; the impact system is installed on the rotating system through screws; the motor control system is installed at the position where the driven wheel pair is installed in the moving system; lighting, positioning camera, camera The controllers are all mounted on the rotating system, on the opposite side to the installation position of the impact system.

The support system includes main support rods, bridge blocks, auxiliary support rods, advancing and retreating circular plates, supporting top columns, fixed square plates, supporting connecting rods, supporting liquid return conduits, supporting hydraulic pumps, hydraulic supporting servo motors, supporting hydraulic cylinders, hydraulic cylinders Support the connection plate and support the liquid inlet conduit; the four main support rods are installed on the fixed square plate through screws, the main support rod and the auxiliary support rod are connected together by two bridge blocks and screws, and one end of the auxiliary support rod is connected to the bridge block Above, the other end of the auxiliary support rod is connected to the advancing and retreating circular plate by screws, and the advancing and retreating circular plate is fixed on the supporting top column by screws. The cylinders are indirectly connected together through the supporting connecting rod. The supporting connecting rod is fixed together with the fixed square plate and the supporting hydraulic cylinder through screws. The supporting hydraulic pump and the servo motor are connected together through a coupling, and then installed on the supporting hydraulic cylinder through screws. On the top, one end of the supporting liquid return conduit and the supporting liquid inlet conduit are connected to the supporting hydraulic cylinder, and the other end is connected to the supporting hydraulic pump, and the supporting hydraulic cylinder is fixed on the supporting connecting plate of the hydraulic cylinder through screws;

The mobile system includes driving wheel to shaft, moving servo motor, driving gear, driving wheel pair, driving shaft body, driven gear, driven wheel pair, driven shaft body, driven wheel to shaft; driving wheel to shaft through bearing transition Placed in the hole of the driving shaft body, the driving wheel pair is placed on both ends of the driving wheel shaft, the moving servo motor is fixed on the driving shaft body through screws, the driving gear is installed on the rotating shaft of the moving servo motor, and the driven gear Placed on the shaft of the driving wheel, the shaft of the driven wheel is placed in the hole of the driven shaft body through the transition of the bearing, and the pair of driven wheels is placed at both ends of the shaft of the driven wheel; the two ends of the rotor rotate through the driving shaft and the driven shaft. The shaft is transitionally connected in the mobile system, located between the driving wheel pair and the driven wheel pair.

The impact system includes impact gun, chuck, impact support plate, impact hydraulic cylinder, impact liquid inlet conduit, impact connecting rod, impact square top column, impact hydraulic pump, impact liquid return conduit, impact servo motor;

The lighting positioning system includes lighting, positioning cameras, and camera controllers;

The impact hydraulic cylinder is fixed on the rotor by screws, and the impact servo motor and impact hydraulic pump are fixed on the impact hydraulic cylinder by screws. The other end of the liquid conduit is connected with the impact hydraulic pump, and the impact support plate is fixed on the impact square top column by screws. The shape of the impact square top column is a square strip instead of a circle, which makes the impact square top column 307 does not rotate freely in hydraulic cylinder 304. The chuck is connected to the impact supporting plate through the impact connecting rod, both ends of the impact connecting rod are fixed on the chuck and the impact supporting plate by screws, and the impact gun is fixed in the chuck through the teeth of the chuck;

The rotating system includes a rotor, a rotating driven gear, a transitional short plate, a transitional long plate, a rotating driving gear, a rotating servo motor, a driving rotating shaft, a driven rotating shaft, a bearing, a driving key, and a connecting tooth key. One end of the active rotating shaft and one end of the driven rotating shaft are respectively placed in hole 1 on both sides of the rotor, the other end of the active rotating shaft is respectively placed in hole 2 of the transition low plate through the bearing transition, and one end of the driven rotating shaft passes through the bearing The transition is placed in the hole of the transitional long plate, the rotor is driven by the driving key on the active rotating shaft, the rotating servo motor is fixed on the screw hole on the transitional low plate through screws, and the rotating driving gear is placed on the rotating shaft of the rotating servo motor , the rotating driven gear is placed on the driving rotating shaft. The second screw hole on the transitional long plate is used for screws to connect the transitional long plate and the driven shaft body as a whole.

The structure of the main support rod is a long strip, and one end of the main support rod has protruding teeth, which is beneficial for the part to withstand the inner wall of the drum to be impacted, and the impact device does not move during the impact; the other end of the main support rod One end has connection hole 3, and the function of hole 3 is to connect the main support rod and the fixed square plate with screws through hole 3 and hole 4 on the fixed square plate after the main support rod is placed between the shoulders of the fixed square plate , there are many holes five on the shaft of the main support rod, and the fifth hole is used to connect the main support rod and the auxiliary support rod through the bridge block; the hole six on the fixed square plate is used for screws to fix the square plate and the support The connecting rods are fixed together. Hole seven on the fixed square plate is to be used for placing the supporting top post.

The utility model has the advantages that: the equipment can automatically perform ultrasonic impact treatment on the annular welds inside the annular welded parts such as pipelines and pressure vessels, reduce welding residual stress, and improve the appearance of the welding surface so as to reduce stress concentration. The efficiency of post-weld treatment of welded parts is greatly improved, and the opening angle of the support frame of the device can be adjusted, so pipe diameters of different sizes can be processed, and the utility model is widely used.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the general assembly structure of the present invention;

Fig. 2 is the top view schematic diagram of the general assembly structure of the present invention;

Fig. 3 is the front schematic diagram of the general assembly structure of the present invention;

Fig. 4 is the structural representation of the support system of the present invention;

Fig. 5 is a schematic side view of the support system structure of the present invention;

Fig. 6 is the schematic diagram of the structure of the main support rod of the present invention;

Fig. 7 is the structural representation of the fixed square plate of the present invention;

Fig. 8 is the structural representation of the mobile system and part of the rotating mechanism of the present invention;

Fig. 9 is a combined schematic diagram of the rotating system, the impact system and the lighting positioning system of the present invention;

Fig. 10 is a schematic diagram of the equipment structure of the rotating system of the present invention;

Fig. 11 is a schematic diagram of the exploded structure of the rotating device of the present invention.

In the figure: 1-support system, 2-moving system, 3-impact system, 4-rotating system, 5-motor control device, 6-lighting lamp, 7-positioning camera, 8-camera controller, 100-main support rod , 101-bridge block, 102-auxiliary support rod, 103-advance and retreat circular plate, 104-support top column, 105-fixed square plate, 106-support connecting rod, 107-support liquid return conduit, 108-support hydraulic pump, 109 -Hydraulic support servo motor, 110-support hydraulic cylinder, 111-hydraulic cylinder support connecting plate, 112-support liquid inlet conduit, 200-driving wheel shaft, 201-moving servo motor, 202-driving gear, 203-driving wheel set , 204-active shaft body, 205-driven gear, 206-driven wheel pair, 207-driven shaft body, 208-driven wheel shaft, 301-impact gun, 302-chuck, 303-impact support plate , 304-impact hydraulic cylinder, 305-impact liquid inlet conduit, 306-impact connecting rod, 307-impact square top column, 308-impact hydraulic pump, 309-impact liquid return conduit, 310-impact servo motor, 400-rotor, 401-rotation driven gear, 402-transition short board, 403-transition long board, 404-rotation driving gear, 405-rotation servo motor, 406-driving rotation shaft, 407-driven rotation shaft, 408-bearing, 409- Drive key, 410-teeth key.

detailed description

As shown in Figures 1, 2, and 3, the ultrasonic impact device for the inner ring seam of the pipeline mainly includes: support system 1, mobile system 2, impact system 3, rotation system 4, motor control system 5, lighting lamp 6, positioning camera 7, camera The controller consists of 8. The support system 1 is connected to the moving system 2 through screws; the moving system 2 is also connected to the rotating system 4 through screws; the impact system 3 is installed on the rotating system 4 through screws; the motor control system 5 is installed on the driven wheel set in the moving system 2 The position; the illuminating lamp 6, the positioning camera 7, and the camera controller 8 are all installed on the rotating system 4, and are installed on the opposite side to the installation position of the impact system 3.

As shown in Figures 4 and 5, the support system of the ultrasonic impact device for the inner circular seam of the pipeline mainly includes: a main support rod 100, a bridge block 101, a secondary support rod 102, an advancing and retreating circular plate 103, a supporting top column 104, a fixed square plate 105, Support connecting rod 106, support liquid return conduit 107, support hydraulic pump 108, hydraulic support servo motor 109, support hydraulic cylinder 110, hydraulic cylinder support connecting plate 111, support liquid inlet conduit 112; four main support rods 100 are installed on the On the fixed square plate 105, the main support rod 100 and the auxiliary support rod 102 are connected together by two bridge blocks 101 and screws. Above, the advance and retreat circular plate 103 is fixed on the support top column 104 by screws, the column body on the support top column 104 is placed in the hole of the fixed square plate 105, and the fixed square plate 105 is indirectly connected with the support hydraulic cylinder 110 through the support connecting rod 106 Together, the support connecting rod 106 is fixed together with the fixed square plate 105 and the support hydraulic cylinder 110 by screws, the support hydraulic pump 108 and the servo motor 109 are connected together by a coupling, and then installed on the support hydraulic cylinder 110 by screws One end of the support liquid return conduit 107 and the support liquid intake conduit 112 are connected to the support hydraulic cylinder 110, and the other end is connected to the support hydraulic pump 108, and the support hydraulic cylinder 110 is fixed on the hydraulic cylinder support connecting plate 111 by screws.

As shown in Figures 6 and 7, the main support rod 100 and the fixed square plate 105 part structure diagram of the ultrasonic impact device for the inner circular seam of the pipeline, wherein the structure of the main support rod 100 is a long strip, and one end of the main support rod 100 has convex teeth 1001, which is beneficial for the part to withstand the inner wall of the barrel to be impacted, and the impact device will not move during the impact. The other end of the main support rod 100 has a connection hole three 1003, and the effect of the hole three 1003 is to use screws to pass through the hole three 1003 and the hole four 1052 after the main support rod 100 is placed between the shoulders 1054 of the fixed square plate 105. Rod 100 and fixed square plate 105 are connected together, and there are a plurality of holes 5 1002 on the shaft body of main support rod 100, and hole 5 1002 is to be used for connecting main support rod 100 and secondary support rod 102 by bridge block 101, setting many The purpose of the first hole is to adjust the installation position of the bridge block 101 according to the inner diameter of the pipeline to be impacted, thereby further adjusting the opening range of the main support rod 100; wherein the hole six 1051 on the fixed square plate 105 is used for screws to fix the square plate 105 and support connecting rod 106 are fixed together. The hole seven 1053 on the fixed square plate 105 is used to place the support top column 104 .

As shown in Figure 8, the moving system of the ultrasonic impact device for the inner circular seam of the pipeline mainly includes: the driving wheel shaft 200, the moving servo motor 201, the driving gear 202, the driving wheel pair 203, the driving shaft body 204, the driven gear 205, Driven wheel pair 206, driven shaft body 207, driven wheel shaft 208; driving wheel shaft 200 is placed in the hole of driving shaft body 204 through bearing transition, and driving wheel 203 is placed on the two sides of driving wheel shaft 200 end, the moving servo motor 201 is fixed on the driving shaft body 204 by screws, the driving gear 202 is installed on the rotating shaft of the moving servo motor 201, the driven gear 205 is placed on the driving wheel shaft 200, and the driven wheel shaft 208 passes through the bearing The transition is placed in the hole of the driven shaft body 207, and the driven wheel pair 206 is placed on the two ends of the driven wheel pair shaft 208.

As shown in Figure 9, the combination of the rotation system, the impact system and the lighting positioning system of the ultrasonic impact device for the inner circular seam of the pipeline, wherein the impact system mainly includes: impact gun 301, chuck 302, impact support plate 303, impact hydraulic cylinder 304 , impact liquid inlet conduit 305, impact connecting rod 306, impact square top column 307, impact hydraulic pump 308, impact liquid return conduit 309, impact servo motor 310; wherein the lighting positioning system mainly includes: lighting lamp 6, positioning camera 7, camera controller8. The impact hydraulic cylinder 304 is fixed on the rotor 400 by screws, the impact servo motor 310 and the impact hydraulic pump 308 are fixed on the impact hydraulic cylinder 304 by screws, one end of the impact liquid inlet conduit 305 and the impact liquid return conduit 309 is connected to the hydraulic cylinder 304, The other end is connected with the impact hydraulic pump 308, and the impact support plate 303 is fixed on the impact square top column 307 by screws. The shape of the impact square top column 307 is a square strip. Connection, both ends of the impact connecting rod 306 are fixed on the chuck 302 and the impact support plate 303 by screws, and the impact gun 301 is fixed in the chuck 302 through the teeth of the chuck.

As shown in Figures 10 and 11, the equipment diagram and exploded diagram of the rotation system of the ultrasonic impact device for the inner circular seam of the pipeline mainly include: rotor 400, rotating driven gear 401, transition short plate 402, transition long plate 403, and rotating driving gear 404 , Rotating servo motor 405, active rotating shaft 406, driven rotating shaft 407, bearing 408, driving key 409, even teeth key 410. One end of the active rotating shaft 406 and one end of the driven rotating shaft 407 are respectively placed in hole 1 4001 on both sides of the rotor 400, and the other end of the active rotating shaft 406 is respectively placed in hole 2 4021 of the transition dwarf plate 402 via bearing 408. One end of the driven rotating shaft 407 is transitionally placed in the hole of the transitional long plate 403 through the bearing 408, the rotor 400 is driven by the driving key 409 on the active rotating shaft 406, and the rotating servo motor 405 is fixed on the transitional low plate 402 by screws. Screw hole one 4022 position, the rotating driving gear 404 is placed on the rotating shaft of the rotating servo motor 405 , and the rotating driven gear 401 is placed on the driving rotating shaft 406 . The second screw hole 4031 on the transitional long plate 403 is used for screws to connect the transitional long plate 403 and the driven shaft body 207 as a whole.

The operation method of the ultrasonic impact device for the inner ring seam of the pipe is as follows:

(1) According to the diameter of the pipe to be impact strengthened, select the proper connection position of the main support rod and the auxiliary support rod, adjust the opening range of the main support rod, and use the chuck to clamp the impact gun in an appropriate position. Set up the impulse current and impulse frequency.

(2) Put the impact device on the pipe mouth, turn on the lighting and camera positioner.

(3) Turn on the moving servo motor in the moving system, and move the impact gun to the position of the weld under the drive of the moving servo motor.

(4) Turn off the moving servo motor in the moving system, and turn on the two supporting servo motors connected to the hydraulic pump in the supporting system. Under the action of hydraulic pressure, the supporting systems at both ends will prop up and tighten the entire impact device. Turn off the support servo motor of the support system.

(5) Turn on the impact servo motor in the impact system, and turn off the impact servo motor after the tip of the impact gun is in contact with the weld and there is a certain pressure between them.

(6) Turn on the rotary servo motor of the impact gun and the rotation system, and the ultrasonic impact gun starts to perform ultrasonic impact treatment on the annular weld.

(7) After the impact strengthening treatment of a weld seam is completed, turn off the rotating servo motor of the rotating system, turn on the two supporting servo motors connected to the hydraulic pump in the supporting system to retract the supporting frame, and wait for the impact equipment to return to the original state When the moving servo motor in the moving system is turned on, the impact device moves to the next weld for impact treatment. When the entire impact task is over, the impact device finally moves out of the pipeline under the action of the moving system. Certainly, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Claims (2)

1. An ultrasonic impact device for inner girth welds in pipes, characterized in that the device includes a support system (1), a moving system (2), an impact system (3), a rotating system (4), and a motor control system (5) , lighting (6), positioning camera (7), camera controller (8); the supporting system (1) is connected to the moving system (2) through screws; the moving system (2) is also connected to the rotating system (4) through screws ; The impact system (3) is installed on the rotation system (4) through screws; the motor control system (5) is installed on the part where the driven wheel pair in the moving system (2) is installed; the lighting lamp (6), the positioning camera (7) , The camera controller (8) is installed on the rotation system (4), and is installed on the opposite side to the installation position of the impact system (3); The support system includes main support rods (100), bridge blocks (101), auxiliary support rods (102), advancing and retreating circular plates (103), supporting top columns (104), fixed square plates (105), and supporting connecting rods (106) , support liquid return conduit (107), support hydraulic pump (108), hydraulic support servo motor (109), support hydraulic cylinder (110), hydraulic cylinder support connecting plate (111), support liquid inlet conduit (112); four The main support bar (100) is installed on the fixed square plate (105) by screws, the main support bar (100) and the auxiliary support bar (102) are connected together by two bridge blocks (101) and screws, and the auxiliary support bar ( 102) One end is connected to the bridge block (101), the other end of the auxiliary support rod (102) is connected to the advancing and retreating circular plate (103) by screws, and the advancing and retreating circular plate (103) is fixed to the supporting top column (104) by screws, The column body on the support top column (104) is placed in the hole of the fixed square plate (105), the fixed square plate (105) and the support hydraulic cylinder (110) are indirectly connected together through the support connecting rod (106), and the support connecting rod (106) is fixed together with the fixed square plate (105) and the support hydraulic cylinder (110) by screws, the support hydraulic pump (108) and the servo motor (109) are connected together by a coupling, and then installed on the support by screws On the hydraulic cylinder (110), one end of the supporting liquid return conduit (107) and the supporting liquid inlet conduit (112) are connected to the supporting hydraulic cylinder (110), the other end is connected to the supporting hydraulic pump (108), and the supporting hydraulic cylinder (110) passes through Screws are fixed on the hydraulic cylinder support connecting plate (111); The moving system (2) includes the driving wheel pair shaft (200), the moving servo motor (201), the driving gear (202), the driving wheel pair (203), the driving shaft body (204), the driven gear (205), the slave The driving wheel pair (206), the driven shaft body (207), and the driven wheel shaft (208); the driving wheel shaft (200) is placed in the hole of the driving shaft body (204) through the bearing transition, and the driving wheel pair ( 203) placed on both ends of the driving wheel shaft (200), the moving servo motor (201) is fixed on the driving shaft body (204) by screws, and the driving gear (202) is installed on the rotating shaft of the moving servo motor (201) , the driven gear (205) is placed on the driving wheel shaft (200), the driven wheel shaft (208) is placed in the hole of the driven shaft body (207) through the bearing transition, and the driven wheel pair (206) is placed on The two ends of the driven wheel pair shaft (208); the two ends of the rotor (400) are transitionally connected in the mobile system (2) through the driving rotation shaft (406) and the driven rotation shaft (407), located between the driving wheel pair (203) and the middle of the driven wheel pair (206); Impact system (3) includes impact gun (301), chuck (302), impact support plate (303), impact hydraulic cylinder (304), impact liquid inlet conduit (305), impact connecting rod (306), impact square top Column (307), impact hydraulic pump (308), impact liquid return conduit (309), impact servo motor (310); The lighting positioning system includes a lighting lamp (6), a positioning camera (7), and a camera controller (8); The impact hydraulic cylinder (304) is fixed on the rotor (400) by screws, the impact servo motor (310) and the impact hydraulic pump (308) are fixed on the impact hydraulic cylinder (304) by screws, the impact inlet conduit (305) and the impact One end of the liquid return conduit (309) is connected to the impact hydraulic cylinder (304), the other end of the impact liquid inlet conduit (305) and the impact liquid return conduit (309) are connected to the impact hydraulic pump (308), and the impact support plate (303) It is fixed on the impact square top column (307) by screws. The shape of the impact square top column (307) is a rectangular strip. The chuck (302) is connected with the impact support plate (303) through the impact connecting rod (306). Both ends of the connecting rod (306) are fixed on the chuck (302) and the impact support plate (303) by screws, and the impact gun (301) is fixed in the chuck (302) through the teeth of the chuck; The rotation system (4) includes the rotor (400), the rotation driven gear (401), the transition short plate (402), the transition long plate (403), the rotation driving gear (404), the rotation servo motor (405), and the driving rotation shaft (406), driven rotating shaft (407), bearing (408), driving key (409), toothed key (410); one end of driving rotating shaft (406) and driven rotating shaft (407) are respectively placed on In the first hole (4001) on both sides of the rotor (400), the other end of the active rotating shaft (406) is placed in the second hole (4021) of the transitional low plate (402) through the bearing (408) respectively, and the driven rotation One end of the shaft (407) is transitionally placed in the hole of the transitional long plate (403) through the bearing (408), and the rotor (400) is driven by the driving key (409) on the active rotating shaft (406), and the servo motor (405 ) is fixed to the position of screw hole 1 (4022) on the transition plate (402) by screws, the rotating driving gear (404) is placed on the rotating shaft of the rotating servo motor (405), and the rotating driven gear (401) is placed on the driving rotation on the shaft (406); the second screw hole (4031) on the transitional long plate (403) is used for screws to connect the transitional long plate (403) and the driven shaft body (207) as a whole. 2. The ultrasonic impact device for inner girth welds in pipes according to claim 1, characterized in that: the structure of the main support rod (100) is a long strip, and one end of the main support rod (100) has convex teeth (1001), which It is beneficial for this part to withstand the inner wall of the drum to be impacted, and the impact device does not move during the impact; the other end of the main support rod (100) has a connection hole 3 (1003), and the function of the hole 3 (1003) is After the main support rod (100) is placed between the shoulders (1054) of the fixed square plate (105), use screws to pass through hole three (1003) and hole four (1052) on the fixed square plate to fix the main support rod (100) Connected together with the fixed square plate (105), there are multiple holes five (1002) on the shaft of the main support rod (100), and the five holes (1002) are used to connect the main support rod (100) by the bridge block (101) Connect with auxiliary support bar (102); Wherein the hole six (1051) on the fixed square plate (105) is to be used for screw to fix the fixed square plate (105) and support connecting rod (106) together; Fixed square plate ( Hole seven (1053) on the 105) is to be used for placing support top post (104).