Electric hammer performance testing machine and testing method thereof

Abstract

The present invention relates to the field of electric tool testing, and in particular to an electric hammer performance tester, including a workbench, etc.; the workbench serves as an assembly carrier of the electric hammer tester, the top surface of the workbench is provided with two symmetrical slide grooves, and the middle of the top surface of the workbench is also provided with a slot; a mounting plate is slidably mounted on the top surface of the workbench through the slide grooves, and the mounting plate is a U-shaped plate; a clamping member I is arranged on one side of the top surface of the mounting plate, and the clamping member I is used to clamp the side handle of the electric hammer. The present invention firmly fixes the electric hammer through the clamping member I and the clamping member II, ensuring that the electric hammer will not deviate or vibrate during the test, thereby improving the accuracy of the test, and through the combined use of the hydraulic cylinder and the adjusting screw, the moving distance and force of the electric hammer can be accurately controlled to ensure that the impact drill bit of the electric hammer can accurately dock with the impact test mechanism and perform the test.

Description

Technical Field

[0001] The invention relates to the field of electric tool testing, and in particular to an electric hammer performance testing machine and a testing method thereof. Background Art

[0002] With the continuous expansion of the power tool market and the advancement of technology, consumers have higher and higher requirements for product quality. Therefore, manufacturers need to ensure that their products are not only powerful, but also reliable and durable. In addition, the safety standards and regulations of various countries are also constantly improving, which requires manufacturers to strictly test the various performance of their products to ensure that they meet the relevant standards. By using an electric hammer performance tester, manufacturers can discover potential problems in the product development stage and make timely adjustments, thereby improving the market competitiveness of their products.

[0003] After searching, the patent with the authorization publication number of CN109932156B discloses an electric hammer working condition tester, which includes a frame, a workbench is arranged on the frame, a test device and a rear bracket are arranged on the table of the workbench, the test device is controlled by a control module, a sliding rod is arranged between the test device and the rear bracket, a clamp sleeve is arranged to slide on the sliding rod, the clamp includes a front clamp plate and a rear clamp plate, and the electric hammer is clamped between the front clamp plate and the rear clamp plate; the test device includes a rear cylinder, a torque sensing structure, a speed sensor, a brake, a limiting shaft, a limiting shaft axial movement and rotation separation structure, a front cylinder, the rear cylinder is arranged on the back of the rear clamp plate, the rear cylinder is fixed on the rear bracket, a push-pull sensor is arranged between the rear cylinder and the rear bracket, the rear end of the limiting shaft is a connecting flange, the connecting flange clamps the drill bit of the electric hammer, the front end of the limiting shaft is connected to the front cylinder, the front cylinder is fixed in front of the workbench, the limiting shaft passes through the limiting shaft axial movement and rotation separation structure, and the torque sensing structure, the speed sensor and the brake are connected to the limiting shaft axial movement and rotation separation structure.

[0004] The above-mentioned authorized patent discloses an electric hammer working condition testing machine, which fixes the electric hammer body by front and rear clamps, and uses the front cylinder to retract when the electric hammer impacts forward to reduce the vibration in the impact axis direction, and the expansion and contraction frequency and pressure of the front cylinder are controlled by the solenoid valve. Since the front cylinder is connected to many parts and is in indirect contact with the impact head, when the electric hammer impacts forward, the test element will move forward as a whole, which causes the pressure of the impact head when it impacts forward to not be fully applied to the test element, thereby affecting the accuracy of the pressure test element, and may cause the final test result to be inaccurate. Therefore, we designed an electric hammer performance testing machine and its testing method to achieve the effect of accurately testing the electric hammer. Summary of the invention

[0005] In order to overcome the disadvantage that the test element of the existing electric hammer performance tester is in indirect contact with the impact head, which easily causes inaccurate test results, the present invention provides an electric hammer performance tester and a test method thereof.

[0006] The technical implementation scheme of the technical scheme is: an electric hammer performance tester, including a workbench, the top surface of the workbench is provided with two symmetrical slide grooves, and the middle part of the top surface of the workbench is also provided with a slot; a mounting plate, slidably mounted on the top surface of the workbench through the slide groove, the mounting plate is a U-shaped plate; a clamping member I, arranged on one side of the top surface of the mounting plate, the clamping member I is used to clamp the side handle of the electric hammer; a clamping member II, arranged at the U-shaped corner of the top surface of the mounting plate, the clamping member I is used to clamp the rear handle of the electric hammer; a pushing mechanism, the pushing mechanism is used to push the electric hammer for testing, the pushing mechanism includes: a sliding plate, slidably connected to the slot in the middle part of the workbench, the sliding plate is supported on the bottom of the mounting plate; a hydraulic cylinder, fixedly mounted on the sliding plate, the piston rod of the hydraulic cylinder is connected to the mounting plate; a guide frame, fixedly arranged on the The guide frame is located at the bottom of the sliding plate in the groove in the middle of the top surface of the workbench; the adjusting screw is threadedly connected to the rear frame body of the guide frame, and the adjusting screw passes through the interior of the guide frame; a slider I is connected to the end of the adjusting screw located in the guide frame, and a guide rod is also provided on the front side of the slider I; a connecting rod is fixed to the front side of the sliding plate through a connecting block, and the connecting rod passes through the guide frame. The rod body of the connecting rod located in the guide frame is a hollow structure, and the front guide rod of the slider I slides through the hollow structure of the connecting rod; a slider II is connected to the end of the connecting rod located in the guide frame; a spring is arranged between the slider I and the slider II, and the spring is sleeved on the guide rod; an impact testing mechanism is installed on the workbench, and the impact testing mechanism is used to provide an electric hammer for impact performance testing.

[0007] As a further preferred embodiment, the clamping member I includes a guide block, a clamping block I and a bidirectional screw rod I. A guide block is fixedly connected to one side of the top surface of the mounting plate, and a clamping block I is symmetrically slidably installed on the guide block, and a bidirectional screw rod I is penetrated and threadedly connected to the clamping block I; the clamping member II includes a limit block, a clamping block II and a bidirectional screw rod II. A limit block is arranged at the U-shaped corner of the top surface of the mounting plate, and the clamping block II is symmetrically slidably arranged on the rear side of the mounting plate through the limit block, and a bidirectional screw rod II is penetrated and threadedly connected to the clamping block II.

[0008] As a further preferred embodiment, the impact testing mechanism includes: a mounting shell, fixedly mounted on the top surface of the workbench; a fixed tube, fixedly mounted inside the mounting shell, an arc groove being provided on the inner side of one end of the fixed tube close to the mounting plate; a guide tube, fixedly connected inside the fixed tube, no less than three through tubes being circumferentially provided on the side surface of the guide tube close to the mounting plate; a pressure sensor, mounted inside each of the through tubes; a sliding ring, slidably connected in the arc groove of the fixed tube, and the inner diameter of the arc groove of the fixed tube is slightly larger than the thickness of the sliding ring; an impact block, The impact blocks are respectively located in the corresponding through tubes and are in contact with and adapted to the pressure sensors, and are consistent in number with the pressure sensors and are arranged on the side of the sliding ring close to the guide tube; the center shaft is rotatably installed inside the guide tube, and the center shaft is a hollow tubular structure; the gear ring is fixed to one end of the center shaft close to the mounting plate; the rotating blocks are installed on the side of the gear ring, and the rotating blocks are located inside the sliding ring and in rotational contact with each other; a locking piece is provided on the sliding ring, and the locking piece is used to lock the sliding ring and the gear ring into a whole.

[0009] As a further preferred solution, a threaded opening adapted for an electric hammer impact drill bit is provided at the center of the rotating block, and the rotating block is detachably mounted on the gear ring.

[0010] As a further preferred embodiment, the locking member includes: an electric push rod, which is provided with multiple and circumferentially fixedly installed on the side of the sliding ring close to the guide tube; a wedge block, fixedly connected to the push rod end of each of the electric push rods, and the wedge block is adapted to the tooth grooves on the periphery of the gear ring.

[0011] As a further preferred embodiment, the workbench is also provided with a torque testing mechanism, which includes: a dynamic torque sensor, installed on the front side of the top surface of the workbench, and the torque input shaft of the dynamic torque sensor is horizontally aligned with the center axis; a spline shaft, fixedly connected to the torque input shaft of the dynamic torque sensor; a spline sleeve, slidably connected to the spline shaft, and the spline sleeve and the center shaft are fixedly connected.

[0012] As a further preferred embodiment, a resistance simulation mechanism is also included, which includes: a mounting frame, which is fixedly mounted on the top surface of the workbench, and the mounting frame is located between the mounting shell and the dynamic torque sensor, and the mounting frame is composed of a bracket and a circular frame; an electromagnet, which is circumferentially arranged on the inner wall of the circular frame of the mounting frame; two terminals are provided and installed on the top of the mounting frame, the terminals are used for an external power supply, and the terminals are electrically connected to the electromagnet; a copper ring is arranged on the outer wall of the spline sleeve.

[0013] As a further preferred embodiment, the resistance simulation mechanism also includes a heat-insulating ring, and the heat-insulating ring is arranged between the spline sleeve and the copper ring.

[0014] As a further preferred solution, a driving member is provided on the sliding ring, and the driving member is used to drive the rotating block to rotate. The driving member includes: a motor fixedly mounted on the side of the sliding ring; a gear connected to the output shaft of the motor; and a ring gear provided on the periphery of the rotating block, and the gear and the ring gear are meshed with each other.

[0015] A method for using an electric hammer performance tester comprises the following steps:

[0016] S1. Fix the electric hammer on the mounting plate by the clamping member I and the clamping member II, adjust the compression degree of the spring by twisting the adjusting screw, squeeze the sliding plate to move to the impact test mechanism, and then activate the hydraulic cylinder to adjust the position of the mounting plate so that the impact drill bit of the electric hammer is aligned with the impact test mechanism;

[0017] S2, start the hydraulic cylinder to push the mounting plate and the electric hammer to the impact test mechanism, start the motor to drive the rotating block to rotate, so that the rotating block is rotated and screwed into the impact drill bit of the electric hammer through the central threaded screw hole, and then use the locking piece to lock the rotating block, the sliding ring and the gear ring into a whole, and transmit the impact force to the sliding ring through the rotating block, and the sliding ring then transmits the force to the pressure sensor through the impact block thereon, so as to obtain the impact force data of the electric hammer. After completing the impact test of the electric hammer, reset the locking piece and release the lock on the gear ring;

[0018] S3. The impact drill bit of the electric hammer is connected to the central shaft through the rotating block. The central shaft is connected to the spline shaft of the dynamic torque sensor through a spline sleeve. The terminal supplies power to the electromagnet to generate a magnetic field, so that eddy currents are generated in the copper ring and electromagnetic damping is formed, thereby simulating torque tests under different resistance conditions, and the torque values ​​of the electric hammer under different resistance conditions are recorded through the dynamic torque sensor.

[0019] Compared with the prior art, the present invention has the following advantages: 1. The present invention firmly fixes the electric hammer by clamping parts I and II, ensuring that the electric hammer will not deviate or vibrate during the test, thereby improving the accuracy of the test, and through the combined use of the hydraulic cylinder and the adjusting screw, the moving distance and force of the electric hammer can be accurately controlled to ensure that the impact drill bit of the electric hammer can be accurately docked with the impact test mechanism and tested.

[0020] 2. Adjust the screw rod and the spring to push the sliding plate to move, and use the hydraulic cylinder on the sliding plate to push the electric hammer to move to the impact test mechanism for impact test. The reaction force generated during the impact test will be transferred from the electric hammer to the spring for buffering and absorption, thereby reducing the damage to the electric hammer caused by the impact test.

[0021] 3. The rotating block, the sliding ring and the gear ring are locked into a whole by the locking member, so that the impact force of the electric hammer impact drill can be concentrically transmitted to the impact block. Accurate data can be obtained by cooperating with the pressure sensor through the impact block, thereby improving the accuracy of the electric hammer impact drill test.

[0022] 4. The torque testing mechanism and the resistance simulation mechanism can simulate the resistance conditions in the actual working environment, and further test the torque performance of the electric hammer under different load conditions, so as to evaluate the actual working performance of the electric hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting plate, the clamping member I and the clamping member II of the present invention.

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the pushing mechanism of the present invention.

[0026] Figure 4 It is a three-dimensional structural schematic diagram of specific components of the pushing mechanism of the present invention.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the impact testing mechanism of the present invention.

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the impact testing mechanism and the locking member of the present invention.

[0029] Figure 7 It is a three-dimensional structural explosion diagram of the impact testing mechanism of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the torque testing mechanism of the present invention.

[0031] Fig. 9 It is a three-dimensional structural schematic diagram of the resistance simulation mechanism of the present invention.

[0032] Fig.10 It is a three-dimensional structural cross-sectional view of the resistance simulation mechanism of the present invention.

[0033] Fig.11 This is a diagram showing the connection relationship between the impact testing mechanism and the driving member of the present invention.

[0034] Among them: 1. Workbench, 100, electric hammer, 2. Mounting plate, 3. Clamping part I, 301, guide block, 302, clamping block I, 303, bidirectional screw rod I, 4. Clamping part II, 401, limit block, 402, clamping block II, 403, bidirectional screw rod II, 5. Pushing mechanism, 501, sliding plate, 502, hydraulic cylinder, 503, guide frame, 504, adjusting screw rod, 505, slider I, 506, connecting rod, 507, slider II, 508, spring, 6. Impact test mechanism, 601, installation shell, 602, fixing pipe, 603, Guide tube, 604, pressure sensor, 605, sliding ring, 606, impact block, 607, center shaft, 608, gear ring, 609, rotating block, 7, locking piece, 701, electric push rod, 702, wedge block, 8, torque testing mechanism, 801, dynamic torque sensor, 802, spline shaft, 803, spline sleeve, 9, resistance simulation mechanism, 901, mounting frame, 902, electromagnet, 903, terminal, 904, insulation ring, 905, copper ring, 10, driving part, 101, motor, 102, gear, 103, gear ring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1: A hammer performance tester, such as Figure 1-Figure 4As shown, it includes a workbench 1, which serves as an assembly carrier for testing the electric hammer 100. The top surface of the workbench 1 is provided with two symmetrical slide grooves, and a section of slot is also provided in the middle of the top surface of the workbench 1; a mounting plate 2, which is slidably mounted on the top surface of the workbench 1 through the slide grooves, and the mounting plate 2 is a U-shaped plate; a clamping member Ⅰ3, which is arranged on one side of the top surface of the mounting plate 2, and the clamping member Ⅰ3 is used to clamp the side handle of the electric hammer 100; a clamping member Ⅱ4, which is arranged at the U-shaped corner of the top surface of the mounting plate 2, and the clamping member Ⅰ3 is used to clamp the rear handle of the electric hammer 100; a pushing mechanism 5, and the pushing mechanism 5 is used to push the electric hammer 100 for testing. The pushing mechanism 5 includes: a sliding plate 501, which is slidably connected to the slot in the middle of the workbench 1, and the sliding plate 501 is supported at the bottom of the mounting plate 2; a hydraulic cylinder 502, which is fixedly installed on the sliding plate 501, and the piston rod of the hydraulic cylinder 502 is connected to the mounting plate 2; a guide frame 503, which is fixedly arranged in the slot in the middle of the top surface of the workbench 1, and the guide frame 503 is located at the bottom of the sliding plate 501; an adjusting screw rod 504, which is threadedly connected to the rear frame body of the guide frame 503, and the adjusting screw rod 504 runs through the interior of the guide frame 503; a slider I 505, which is connected to the adjusting screw rod 504 A guide rod is also provided on the front side of the slider I505 at the end located in the guide frame 503; a connecting rod 506 is fixedly connected to the front side of the sliding plate 501 through a connecting block, the connecting rod 506 passes through the guide frame 503, the rod body of the connecting rod 506 located in the guide frame 503 is a hollow structure, and the front guide rod of the slider I505 slides through the hollow structure of the connecting rod 506; a slider II507 is connected to the end of the connecting rod 506 located in the guide frame 503; a spring 508 is provided between the slider I505 and the slider II507, and the spring 508 is sleeved on the guide rod An impact test mechanism 6 is installed on the workbench 1. The impact test mechanism 6 is used to provide an impact performance test for the electric hammer 100. By twisting the adjusting screw 504, the spring 508 is compressed and the sliding plate 501 is pushed toward the impact test mechanism 6 through the connecting rod 506, so that the hydraulic cylinder 502 on the sliding plate 501 pushes the mounting plate 2 and the electric hammer 100 to move to the impact test mechanism 6, so that the impact drill bit of the electric hammer 100 can penetrate into the impact test mechanism 6 for impact testing. When performing the impact test, the impact reaction force of the electric hammer 100 will be absorbed by the spring 508, thereby reducing the damage to the electric hammer 100 caused by the reaction force of the impact test.

[0037] like Figure 1 and Figure 2As shown, the clamping member I3 includes a guide block 301, a clamping block I302 and a bidirectional screw rod I303. The guide block 301 is fixedly connected to one side of the top surface of the mounting plate 2. The clamping block I302 is symmetrically slidably mounted on the guide block 301. The clamping block I302 is penetrated and threadedly connected with a bidirectional screw rod I303. The bidirectional threads of the bidirectional screw rod I303 are respectively adapted to the two symmetrical clamping blocks I302; the clamping member II4 includes a limit block 401, a clamping block II402 and a bidirectional screw rod II403. A limit block 401 is arranged at the U-shaped corner of the top surface of the mounting plate 2. Block 401, the clamping block II 402 is symmetrically slidably arranged on the rear side of the mounting plate 2 through the limit block 401, a bidirectional screw rod II 403 penetrates and is threadedly connected to the clamping block II 402, the bidirectional threads of the bidirectional screw rod I 303 are respectively adapted to the two symmetrical clamping blocks II 402, and by respectively twisting the bidirectional screw rod I 303 and the bidirectional screw rod II 403, the clamping block I 302 and the clamping block II 402 are respectively restricted and clamped at the handles on the side and rear sides of the electric hammer 100, so that the electric hammer 100 can be stably clamped on the mounting plate 2 for testing.

[0038] like Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the impact testing mechanism 6 includes: a mounting shell 601, fixedly mounted on the top surface of the workbench 1; a fixed tube 602, fixedly mounted inside the mounting shell 601, and an arc groove is provided on the inner side of one end of the fixed tube 602 close to the mounting plate 2; a guide tube 603, fixedly connected to the inside of the fixed tube 602, and three through tubes are circumferentially arranged on the side of the guide tube 603 close to the mounting plate 2; a pressure sensor 604, mounted inside each of the through tubes; a sliding ring 605, slidingly connected The inner diameter of the arc groove of the fixed tube 602 is slightly larger than the thickness of the sliding ring 605; the impact blocks 606 are the same in number as the pressure sensors 604 and are arranged on the side of the sliding ring 605 close to the guide tube 603. The impact blocks 606 are respectively located in the corresponding through tubes, and the impact blocks 606 contact and adapt to the pressure sensors 604; the central shaft 607 is rotatably installed inside the guide tube 603, and the central shaft 607 is a hollow tubular structure; the gear Ring 608 is fixedly connected to one end of the central axis 607 close to the mounting plate 2; a rotating block 609 is installed on the side of the gear ring 608, and the rotating block 609 is made of a high-strength and high-rigidity material. The rotating block 609 is located inside the sliding ring 605 and is in rotational contact with each other. A threaded opening adapted to the impact drill bit of the electric hammer 100 is provided at the center of the rotating block 609. The rotating block 609 is detachably installed on the gear ring 608, and the gear ring 608 can be replaced with a threaded opening of different sizes but different sizes. The rotating block 609 of the same size allows the impact drill bits of different sizes of the electric hammer 100 to be screwed into the rotating block 609, thereby improving the application range of the present testing machine; the locking piece 7 is provided on the sliding ring 605, and the locking piece 7 is used to lock the sliding ring 605 and the gear ring 608 into a whole, so that the impact drill bit of the electric hammer 100 transmits the impact force to the impact block 606 through the sliding ring 605, and impacts the pressure sensor 604 through the impact block 606, thereby reflecting the impact force of the impact drill bit of the electric hammer 100.

[0039] When using this testing machine to perform a performance test on the electric hammer 100, the handles on the side and rear of the electric hammer 100 are placed on the clamp block Ⅰ302 and the clamp block Ⅱ402 respectively, and by twisting the two-way screw rod Ⅰ303 and the two-way screw rod Ⅱ403, under the action of the threads of the two-way screw rod Ⅰ303 and the two-way screw rod Ⅱ403, the clamp block Ⅰ302 and the clamp block Ⅱ402 shrink inward and clamp the handles on the side and rear of the electric hammer 100 respectively, so that the electric hammer 100 can be stably installed on the mounting plate 2. The tester first twists the adjusting screw rod 504, and the adjusting screw rod 504 pushes the slider Ⅰ505 forward in the guide frame 503 under the action of the threads, so that the slider Ⅰ505 pushes the slider Ⅱ507 and the connecting rod 506 forward in the guide frame 503 through the spring 508, and the compressed spring 508 pushes the connecting rod 506 forward, so that the connecting rod 506 The sliding plate 501 is driven to slide forward in the slot of the workbench 1, and the sliding plate 501 then synchronously drives the mounting plate 2 and the electric hammer 100 to move forward through the hydraulic cylinder 502 until the impact drill bit of the electric hammer 100 moves and contacts the threaded opening of the rotating block 609. Then, the adjusting screw 504 is stopped and the hydraulic cylinder 502 is enabled. The hydraulic cylinder 502 continues to push the mounting plate 2 and the electric hammer 100 forward through the piston rod. During this process, the threaded opening of the rotating block 609 is adapted to the impact drill bit of the electric hammer 100, and is rotated and screwed into the impact drill bit of the electric hammer 100 through the threaded opening, so that the impact drill bit of the electric hammer 100 on the mounting plate 2 gradually passes through the threaded opening of the rotating block 609 and enters the center axis 607. When the impact drill bit of the electric hammer 100 penetrates a certain distance into the center axis 607, the impact performance test of the electric hammer 100 can be started.

[0040] like Figure 6 and Figure 7 As shown, the locking member 7 includes: an electric push rod 701, which is provided with a plurality of and circumferentially fixedly installed on the side of the sliding ring 605 close to the guide tube 603; a wedge block 702, fixedly connected to the push rod end of each of the electric push rods 701, the wedge block 702 is adapted to the tooth grooves on the periphery of the gear ring 608, and the plurality of electric push rods 701 respectively push the wedge blocks 702 to be clamped in the tooth grooves of the gear ring 608, so that the sliding ring 605 and the gear ring 608 are connected as a whole.

[0041] First, the multiple electric push rods 701 on the sliding ring 605 are activated. The electric push rods 701 push the wedge blocks 702 inward through the push rods, so that the multiple wedge blocks 702 shrink inward and get stuck on the gear ring 608. The gear ring 608 can be locked by the multiple wedge blocks 702, so that the sliding ring 605 is connected to the rotating block 609 through the gear ring 608 to form a whole, and the impact drill bit of the electric hammer 100 is fixed on the rotating block 609. At this time, the electric hammer 100 is activated to make the impact drill bit thereon impact alone, and the impact drill bit of the electric hammer 100 will transmit the impact force to the sliding ring 605 through the rotating block 609, and the sliding ring 605 vibrates in the fixed tube 602, impacting The impact force is then transmitted to multiple impact blocks 606 through the sliding ring 605. Finally, the pressure sensor 604 will sense the impact force of the impact blocks 606 respectively, thereby obtaining the impact force data of the electric hammer 100. When the impact force performance test of the electric hammer 100 is performed, the reaction force generated by the impact force will act on the electric hammer 100. At this time, the reaction force transmitted to the electric hammer 100 will be transmitted to the connecting rod 506 through the mounting plate 2 and the sliding plate 501. The spring 508 between the slider Ⅰ505 and the slider Ⅱ507 in the guide frame 503 will buffer and absorb the impact force transmitted to the connecting rod 506, thereby avoiding damage to the electric hammer 100 by the reaction force during the impact test.

[0042] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 6 and Figure 8 As shown, the workbench 1 is also provided with a torque testing mechanism 8, and the torque testing mechanism 8 includes: a dynamic torque sensor 801, which is installed on the front side of the top surface of the workbench 1, and the torque input shaft of the dynamic torque sensor 801 is horizontally aligned with the center axis 607; a spline shaft 802, which is fixedly connected to the torque input shaft of the dynamic torque sensor 801; a spline sleeve 803, which is slidably connected to the spline shaft 802, and the spline sleeve 803 and the center axis 607 are fixedly connected. The impact drill bit of the electric hammer 100 drives the center axis 607 to rotate, so that the torque of the center axis 607 is transmitted to the dynamic torque sensor 801 through the spline shaft 802 and the spline sleeve 803, so that the dynamic torque sensor 801 can measure the torque of the impact drill bit of the electric hammer 100.

[0043] like Figure 1 , Figure 8 , Fig. 9 and Fig.10As shown, it also includes a resistance simulation mechanism 9, which includes: a mounting frame 901, which is fixedly installed on the top surface of the workbench 1, and the mounting frame 901 is located between the mounting shell 601 and the dynamic torque sensor 801, and the mounting frame 901 is composed of a bracket and a circular frame; an electromagnet 902, which is circumferentially arranged on the inner wall of the circular frame of the mounting frame 901; a terminal 903, which is provided with two and mounted on the top of the mounting frame 901, and the terminal 903 is used for an external power supply, and the terminal 903 and the electromagnet 902 are electrically connected; a copper ring 905, which is arranged on the outer wall of the spline sleeve 803, and when the electromagnet 902 is energized through the terminal 903, the electromagnet 902 generates a magnetic field. When the copper ring 905 rotates in the magnetic field generated by the electromagnet 902, eddy currents will be generated. The eddy currents generate opposite magnetic fields, causing the electromagnet 902 and the copper ring 905 to generate electromagnetic damping, thereby simulating the resistance to the spline sleeve 803 by hindering the copper ring 905, so as to facilitate the use of the dynamic torque sensor 801 to measure the torque of the impact drill bit of the electric hammer 100 under the simulated resistance; the resistance simulation mechanism 9 also includes a heat insulation ring 904, which is arranged between the spline sleeve 803 and the copper ring 905. The heat insulation ring 904 is used to isolate the heat of the copper ring 905 when the eddy current generates current in the magnetic field, so as to prevent the heat of the copper ring 905 from being directly transferred to the spline sleeve 803 and the spline shaft 802.

[0044] like Figure 1 and Fig.11 As shown, a driving member 10 is provided on the sliding ring 605, and the driving member 10 is used to drive the rotating block 609 to rotate. The driving member 10 includes: a motor 101, which is fixedly installed on the side of the sliding ring 605; a gear 102, which is connected to the output shaft of the motor 101; a ring gear 103, which is arranged on the periphery of the rotating block 609, and the gear 102 and the ring gear 103 are meshed with each other. The motor 101 drives the gear 102 to rotate, so that the gear 102 meshes and drives the rotating block 609 to rotate, so that the impact drill bit of the electric hammer 100 is aligned and screwed into the threaded screw hole of the rotating block 609.

[0045] After testing the impact force of the electric hammer 100, the electric push rod 701 expands and resets by driving the wedge block 702, so that the wedge block 702 is no longer stuck on the gear ring 608, and the electric hammer 100 on the mounting plate 2 is pushed forward by activating the hydraulic cylinder 502, and the impact drill bit on the electric hammer 100 continues to penetrate into the rotating block 609 until the impact drill bit of the electric hammer 100 penetrates into the central axis 607 to a distance that meets the torque test requirements, and the spline shaft 802 is adapted to the spline sleeve 803 to connect the torque input shaft of the dynamic torque sensor 801 with the neutral shaft, and the electric hammer 100 is activated to make it The upper impact drill bit rotates independently, and the rotating impact drill bit is transmitted to the torque input shaft of the dynamic torque sensor 801 through the rotating block 609, the central shaft 607, the spline shaft 802 and the spline sleeve 803 in sequence, so that the torque value of the normal operation of the electric hammer 100 is recorded by the dynamic torque sensor 801. When it is necessary to simulate the torque of the electric hammer 100 when working in the impact drilling environment, the electromagnet 902 is energized by connecting an external power supply to the terminal 903. The electromagnet 902 after energization will form a circle of magnetic field. At this time, the rotating spline shaft 802 and the spline sleeve 803 will synchronously drive the copper ring 905 to generate Rotation, as the copper ring 905 moves in the magnetic field, eddy currents will be generated on the copper ring 905, and the eddy currents will generate an opposite magnetic field on the copper ring 905. Under the interaction of the two opposite magnetic fields, the electromagnet 902 can hinder the rotation of the copper ring 905 through electromagnetic damping. At the same time, the heat insulation ring 904 will absorb and isolate the heat generated by the eddy current on the copper ring 905, preventing the copper ring 905 from being transferred inward to the spline shaft 802 and the spline sleeve 803. Then, by adjusting the voltage on the terminal 903, different resistances to the rotating impact drill bit on the electric hammer 100 are simulated, and finally the dynamic torque sensor 801 is used to measure The torque value of the electric hammer 100 under different resistance conditions is obtained. When the electric hammer 100 is detached from the rotating block 609 after the test is completed, the threaded opening in the rotating block 609 may not be able to align with the impact drill bit of the electric hammer 100 for the next test. At this time, the output shaft of the motor 101 drives the gear 102, so that the rotating gear 102 meshes and drives the ring gear 103, and then drives the rotating block 609 to rotate until the threaded opening of the rotating block 609 can align with the impact drill bit of the electric hammer 100 for the next test, thereby improving the convenience of the impact drill bit of the electric hammer 100 to penetrate the rotating block 609 and improving the testing efficiency of the performance of the electric hammer 100.

[0046] A method for using an electric hammer performance tester comprises the following steps:

[0047] S1, fix the electric hammer 100 on the mounting plate 2 by the clamping member I3 and the clamping member II4, adjust the compression degree of the spring 508 by twisting the adjusting screw 504, squeeze the sliding plate 501 to move to the impact test mechanism 6, and then activate the hydraulic cylinder 502 to adjust the position of the mounting plate 2 so that the impact drill bit of the electric hammer 100 is aligned with the impact test mechanism 6;

[0048] S2, start the hydraulic cylinder 502 to push the mounting plate 2 and the electric hammer 100 to the impact test mechanism 6, start the motor 101 to drive the rotating block 609 to rotate, so that the rotating block 609 is rotated and screwed into the impact drill bit of the electric hammer 100 through the central threaded screw hole, and then the rotating block 609, the sliding ring 605 and the gear ring 608 are locked into a whole by the locking member 7, and the impact force is transmitted to the sliding ring 605 through the rotating block 609, and the sliding ring 605 transmits the force to the pressure sensor 604 through the impact block 606 thereon, so as to obtain the impact force data of the electric hammer 100, and after completing the impact test of the electric hammer 100, the locking member 7 is reset and the gear ring 608 is unlocked;

[0049] S3. The impact drill bit of the electric hammer 100 is connected to the central shaft 607 through the rotating block 609. The central shaft 607 is connected to the spline shaft 802 of the dynamic torque sensor 801 through the spline sleeve 803. The terminal 903 supplies power to the electromagnet 902 to generate a magnetic field, so that eddy currents are generated in the copper ring 905 and electromagnetic damping is formed, thereby simulating torque tests under different resistance conditions, and the torque values ​​of the electric hammer 100 under different resistance conditions are recorded through the dynamic torque sensor 801.

[0050] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electric hammer performance tester, comprising: A workbench (1), wherein the top surface of the workbench (1) is provided with two symmetrical sliding grooves, and a section of groove is also provided in the middle of the top surface of the workbench (1); A mounting plate (2) is slidably mounted on the top surface of the workbench (1) through the slide groove, and the mounting plate (2) is a U-shaped plate; A clamping member I (3) is arranged on one side of the top surface of the mounting plate (2); A clamping member II (4) is arranged at a U-shaped corner of the top surface of the mounting plate (2); The invention is characterized in that it further comprises a pushing mechanism (5), wherein the pushing mechanism (5) is used to push the electric hammer (100) for testing, and the pushing mechanism (5) comprises: A sliding plate (501) is slidably connected to a slot in the middle of the workbench (1), and the sliding plate (501) is supported on the bottom of the mounting plate (2); A hydraulic cylinder (502) is fixedly mounted on the sliding plate (501), and a piston rod of the hydraulic cylinder (502) is connected to the mounting plate (2); A guide frame (503) is fixedly arranged in a slot in the middle of the top surface of the workbench (1), and the guide frame (503) is located at the bottom of the sliding plate (501); An adjusting screw rod (504) is threadedly connected to the rear frame body of the guide frame (503), and the adjusting screw rod (504) passes through the interior of the guide frame (503); A slider I (505), connected to the end of the adjusting screw rod (504) located inside the guide frame (503); A connecting rod (506) is fixedly connected to the front side of the sliding plate (501) via a connecting block, the connecting rod (506) penetrates the guide frame (503), and the rod body of the connecting rod (506) located in the guide frame (503) is a hollow structure; A slider II (507), connected to the end of the connecting rod (506) located inside the guide frame (503); A spring (508) is disposed between the slider I (505) and the slider II (507); An impact testing mechanism (6) is installed on the workbench (1), and the impact testing mechanism (6) is used to test the impact performance of the electric hammer (100); The impact testing mechanism (6) comprises: An installation shell (601) is fixedly installed on the top surface of the workbench (1); A fixed tube (602) fixedly mounted inside the mounting shell (601), wherein an arc groove is provided on the inner side of one end of the fixed tube (602) close to the mounting plate (2); A guide tube (603) fixedly connected to the interior of the fixed tube (602), wherein no less than three through tubes are circumferentially arranged on a side surface of the guide tube (603) close to the mounting plate (2); A pressure sensor (604) is installed inside each of the through pipes; A sliding ring (605) is slidably connected in the circular arc groove of the fixed tube (602), and the inner diameter of the circular arc groove of the fixed tube (602) is slightly larger than the thickness of the sliding ring (605); Impact blocks (606), the number of which is the same as that of the pressure sensors (604) and which are arranged on the side of the sliding ring (605) close to the guide tube (603), the impact blocks (606) contacting and fitting the pressure sensors (604); A central shaft (607) is rotatably mounted inside the guide tube (603), and the central shaft (607) is a hollow tubular structure; A gear ring (608) fixedly connected to one end of the central shaft (607) close to the mounting plate (2); A rotating block (609) is mounted on a side of the gear ring (608), the rotating block (609) being located inside the sliding ring (605) and in rotational contact with each other; A locking piece (7), wherein the sliding ring (605) is provided with a locking piece (7), and the locking piece (7) is used to lock the sliding ring (605) and the gear ring (608) into a whole; A threaded opening adapted to fit an impact drill bit of an electric hammer (100) is provided at the center of the rotating block (609), and the rotating block (609) is detachably mounted on the gear ring (608).

2. An electric hammer performance tester as claimed in claim 1, characterized in that: The clamping member I (3) comprises a guide block (301), a clamping block I (302) and a bidirectional screw rod I (303); the guide block (301) is fixedly connected to one side of the top surface of the mounting plate (2); the clamping block I (302) is symmetrically slidably mounted on the guide block (301); and the bidirectional screw rod I (303) penetrates and is threadedly connected to the clamping block I (302); The clamping member II (4) comprises a limit block (401), a clamping block II (402) and a bidirectional screw rod II (403); the limit block (401) is arranged at the U-shaped corner of the top surface of the mounting plate (2); the clamping block II (402) is symmetrically slidably arranged on the rear side of the mounting plate (2) through the limit block (401); and the bidirectional screw rod II (403) passes through and is threadedly connected to the clamping block II (402).

3. An electric hammer performance tester as claimed in claim 2, characterized in that: The locking member (7) comprises: The electric push rods (701) are provided in plurality and are circumferentially fixedly mounted on the side surface of the sliding ring (605) close to the guide tube (603); The wedge block (702) is fixedly connected to the push rod end of the electric push rod (701), and the wedge block (702) is adapted to the tooth grooves on the periphery of the gear ring (608).

4. An electric hammer performance tester as claimed in claim 3, characterized in that: The workbench (1) is also provided with a torque testing mechanism (8), and the torque testing mechanism (8) comprises: A dynamic torque sensor (801) is mounted on the front side of the top surface of the workbench (1), and the torque input axis of the dynamic torque sensor (801) is horizontally aligned with the central axis (607); A spline shaft (802) fixedly connected to the torque input shaft of the dynamic torque sensor (801); The spline sleeve (803) is slidably connected to the spline shaft (802), and the spline sleeve (803) and the central shaft (607) are fixedly connected.

5. An electric hammer performance tester as claimed in claim 4, characterized in that: It also includes a resistance simulation mechanism (9), wherein the resistance simulation mechanism (9) includes: A mounting frame (901) is fixedly mounted on the top surface of the workbench (1), and the mounting frame (901) is located between the mounting housing (601) and the dynamic torque sensor (801), and the mounting frame (901) is composed of a bracket and a round frame; An electromagnet (902) is circumferentially arranged on the inner wall of the circular frame of the mounting frame (901); Two binding posts (903) are provided and are mounted on the top of the mounting frame (901), and the binding posts (903) are electrically connected to the electromagnet (902); The copper ring (905) is arranged on the outer wall of the spline sleeve (803).

6. An electric hammer performance tester as claimed in claim 5, characterized in that: The resistance simulation mechanism (9) further comprises a heat-insulating ring (904), wherein the heat-insulating ring (904) is arranged between the spline sleeve (803) and the copper ring (905), and the heat-insulating ring (904) is used to isolate the copper ring (905) from heat generated when an eddy current generates an electric current in a magnetic field.

7. An electric hammer performance tester as claimed in claim 6, characterized in that: The sliding ring (605) is provided with a driving member (10), and the driving member (10) is used to drive the rotating block (609) to rotate. The driving member (10) comprises: A motor (101) is fixedly mounted on a side surface of the sliding ring (605); A gear (102) connected to an output shaft of the motor (101); A gear ring (103) is arranged on the periphery of the rotating block (609), and the gear (102) and the gear ring (103) are meshed with each other.

8. A method for using an electric hammer performance tester, which adopts the electric hammer performance tester according to claim 7, characterized in that: The steps include: S1. Fix the electric hammer (100) on the mounting plate (2) by means of the clamping member I (3) and the clamping member II (4), adjust the compression degree of the spring (508) by twisting the adjusting screw (504), and squeeze the sliding plate (501) to move to the impact test mechanism (6), and then activate the hydraulic cylinder (502) to adjust the position of the mounting plate (2) so that the impact drill bit of the electric hammer (100) is aligned with the impact test mechanism (6); S2, starting the hydraulic cylinder (502) to push the mounting plate (2) and the electric hammer (100) to the impact test mechanism (6), so that the rotating block (609) is rotated and screwed into the impact drill bit of the electric hammer (100) through the central threaded screw hole, and then the rotating block (609), the sliding ring (605) and the gear ring (608) are locked into a whole by the locking member (7), and the impact force is transmitted to the sliding ring (605) through the rotating block (609), and the sliding ring (605) transmits the force to the pressure sensor (604) through the impact block (606) thereon, so as to obtain the impact force data of the electric hammer (100), and after completing the impact test of the electric hammer (100), the locking member (7) is reset and the gear ring (608) is unlocked; S3. The impact drill bit of the electric hammer (100) is connected to the central shaft (607) via the rotating block (609); the central shaft (607) is connected to the spline shaft (802) of the dynamic torque sensor (801) via the spline sleeve (803); the terminal (903) supplies power to the electromagnet (902) to generate a magnetic field, so that eddy currents are generated in the copper ring (905) and electromagnetic damping is formed, thereby simulating torque tests under different resistance conditions; and the torque values ​​of the electric hammer (100) under different resistance conditions are recorded via the dynamic torque sensor (801).

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