Lithium battery electric hammer performance testing machine and testing method thereof
By incorporating clamping, drilling depth monitoring, chip weighing, and temperature detection mechanisms, along with a PLC controller, the problem of existing lithium-ion electric hammer performance testing machines being unable to accurately quantify drill bit wear has been solved, enabling precise monitoring and safety assurance of drill bit wear.
Patent Information
- Application Number
- CN202510906821.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-02
- Publication Date
- 2025-11-18
AI Technical Summary
Existing lithium-ion electric hammer performance testing machines lack precise quantification of drill bit wear, making it difficult to simulate wear conditions under actual working conditions. This leads to a decrease in drilling speed and chip removal efficiency, posing safety hazards.
By employing a clamping mechanism, a drilling depth monitoring mechanism, a chip weighing mechanism, and a temperature detection mechanism, combined with a PLC controller, real-time monitoring and data analysis of drill bit wear can be achieved, accurately quantifying the degree of drill bit wear and chip removal capacity, and preventing the risks of overheating and stuck drill.
It enables precise quantification and safety monitoring of drill bit wear, improves the accuracy and reliability of test results, prevents safety accidents caused by wear, and ensures the service life of equipment and operational safety.
Smart Images
Figure CN120971060A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of electric tool testing, and particularly relates to a lithium battery electric hammer performance testing machine and a testing method thereof. BACKGROUND
[0002] In the fields of building and decoration, a lithium battery electric hammer (using a lithium battery as a power supply) as a core tool directly affects work efficiency and safety, and existing lithium battery electric hammer performance testing machines mainly focus on macro indicators such as whole machine power output and battery endurance, such as the electric hammer performance testing machine disclosed in announcement No. CN118980487A, but there are significant limitations in drill bit performance testing.
[0003] Current testing equipment generally lacks special detection modules for electric hammer drills, and it is difficult to simulate the wear state of the drill bit under actual working conditions. The electric hammer drill is faced with the problem of double wear in high-frequency operation: on the one hand, long-term friction of the cutting edge with hard materials such as concrete and metal will cause the edge to be passivated and cracked, which will reduce the drilling speed; on the other hand, the depth of the spiral groove will be worn due to the friction of the chip removal (such as a decrease in groove depth of greater than or equal to 0.3 mm), which will reduce the chip removal efficiency and even cause the risk of drill jamming. However, the existing testing machines cannot accurately quantify the degree of drill wear, and can only be judged by artificial visual observation or experience, which not only affects the overall performance of the electric hammer, but also may cause motor overload or safety accidents due to debris blockage and increased resistance.
[0004] Therefore, a lithium battery electric hammer performance testing machine and a testing method thereof are provided. SUMMARY
[0005] The purpose of the present application is to provide a lithium battery electric hammer performance testing machine and a testing method thereof to solve the above problems.
[0006] To achieve the above purpose, the following technical scheme is adopted: a lithium battery electric hammer performance testing machine, comprising a rack, a first hydraulic cylinder, an L-shaped supporting plate and a positioning table, the first hydraulic cylinder is fixedly arranged on one side of the top of the rack, the L-shaped supporting plate is placed on the top of the rack, and one side of the L-shaped supporting plate is fixedly connected with the moving end of the first hydraulic cylinder, the positioning table is fixedly arranged on the other side of the top of the rack, and a positioning hole is formed in the side wall of the positioning table, further comprising: A clamping mechanism is arranged on the upper surface of the L-shaped supporting plate, and the clamping mechanism is used to fixedly install the electric hammer; A drilling depth monitoring mechanism is arranged on the top of the rack, and the drilling depth monitoring mechanism is connected with the lower surface of the L-shaped supporting plate, and the drilling depth monitoring mechanism is used to monitor the feed depth of the drill bit of the electric hammer; A positioning mechanism is arranged in the interior of the positioning table and arranged above the positioning hole, and is used to position and install the material; A splash-proof mechanism is arranged on the side wall of the positioning table, and the splash-proof mechanism blocks the upper part of the positioning hole; A debris weighing mechanism is arranged on the top of the rack and is located below the positioning hole, and the degree of wear of the spiral groove of the hammer drill bit is determined by weighing the debris; A temperature detection mechanism is arranged on the side wall of the positioning table, and the temperature detection mechanism is connected with the splash-proof mechanism; A PLC controller is fixedly arranged on the top of the rack, and the first hydraulic cylinder, the clamping mechanism, the drilling depth monitoring mechanism, the positioning mechanism, the splash-proof mechanism, the debris weighing mechanism, and the temperature detection mechanism are all electrically connected with the PLC controller.
[0007] Preferably, the clamping mechanism comprises two first fixed seats fixedly arranged on the upper surface of the L-shaped supporting plate, the side wall of each of the two first fixed seats is fixedly provided with a second hydraulic cylinder, and the moving end of each of the two second hydraulic cylinders is fixedly provided with an arc-shaped clamping plate.
[0008] Preferably, the drilling depth monitoring mechanism comprises a chute arranged horizontally on the top of the rack, an insulating sliding block is horizontally arranged in the chute, the top of the insulating sliding block is fixedly connected with the lower surface of the L-shaped supporting plate, an electrically resistive rod is horizontally fixedly arranged in the chute, an electrically conductive sleeve is slidably arranged on the rod wall of the electrically resistive rod, and the electrically conductive sleeve is fixedly arranged in the insulating sliding block.
[0009] Preferably, the positioning mechanism comprises a retreat groove arranged in the positioning table, a third hydraulic cylinder is fixedly arranged in the positioning table, and the moving end of the third hydraulic cylinder extends into the retreat groove and is fixedly provided with an arc-shaped positioning plate.
[0010] Preferably, the splash-proof mechanism comprises a second fixed seat fixedly arranged on the side wall of the positioning table, a fourth hydraulic cylinder is fixedly arranged on the second fixed seat, the moving end of the fourth hydraulic cylinder is fixedly provided with an arc-shaped splash-proof plate, and the arc-shaped splash-proof plate is located at the periphery of the positioning hole.
[0011] Preferably, the debris weighing mechanism comprises a debris discharge port arranged on the top of the rack, a debris collection box is arranged on the top of the rack below the debris discharge port, two tension sensors are fixedly arranged on the top of the debris collection box and the top of the rack, and a box bottom support is fixedly arranged on the bottom of the debris collection box by means of bolts.
[0012] Preferably, the temperature detection mechanism comprises an air suction box fixedly arranged on the side wall of the positioning table, one side of the air suction box is fixedly provided with an air suction machine, and the other side of the air suction box is fixedly provided with a connecting pipe, the arc-shaped anti-splashing plate adopts a hollow structure, one end of the connecting pipe away from the air suction box is fixedly connected with the side wall of the arc-shaped anti-splashing plate, the inner side wall of the arc-shaped anti-splashing plate is fixedly provided with an air suction pipe, the inside of the air suction pipe is fixedly provided with a temperature sensor, and the end of the air suction pipe is fixedly provided with a protective mesh for shielding the temperature sensor, and the inside of the air suction box is fixedly provided with a filter screen.
[0013] A test method of a lithium electric hammer performance test machine, the test method comprising the following steps: S1. The tester places a new electric hammer on the upper surface of the L-shaped supporting plate, operates the PLC controller to start the two second hydraulic cylinders of the clamping mechanism, drives the arc-shaped clamping plate to clamp the new electric hammer, then puts hard materials into the positioning holes of the positioning table, and starts the third hydraulic cylinder of the positioning mechanism to drive the arc-shaped positioning plate to move downward to position and fix the hard materials; S2. Turn on the power supply of the new electric hammer to make the drill bit work, operate the PLC controller to start the first hydraulic cylinder to push the L-shaped supporting plate to move towards the positioning table, at this time, the insulating sliding block of the drilling depth monitoring mechanism drives the conductive sleeve to slide on the resistance rod, and the drilling distance of the drill bit is monitored through the change of the current signal; S3. During the drilling process, the fourth hydraulic cylinder of the anti-splashing mechanism is started to drive the arc-shaped anti-splashing plate to shield the periphery of the positioning hole, the generated debris falls into the debris collection box through the debris discharge port, the tension sensor of the debris weighing mechanism weighs the debris weight in real time, and the data is transmitted to the PLC controller; S4. The air suction machine of the temperature detection mechanism is started synchronously, a negative pressure is formed through the connecting pipe and the air suction pipe, hot air generated during drilling is sucked in, the temperature sensor detects the temperature of the hot air, the filtered impurities are discharged after passing through the filter screen of the air suction box, and the temperature data is synchronously transmitted to the PLC controller; S5. After the test is completed, the used electric hammer and new hard materials are replaced, and the steps S-S are repeated, and the PLC controller compares the drilling time, debris weight and temperature data of the new electric hammer and the used electric hammer to determine the drill bit wear degree.
[0014] Compared with the prior art, the present application has the following advantages: 1、By setting the drilling depth monitoring mechanism, when the L-shaped supporting plate moves, the insulating sliding block drives the conductive sleeve to slide on the resistance rod, the resistance value of the resistance rod connected to the circuit is changed, the drill feeding distance is converted into a current signal, the drilling depth of the electric hammer drill can be monitored in real time and accurately, the hysteresis and errors of traditional manual measurement are avoided, the drilling depth is calculated by the built-in system of the PLC controller to ensure the consistency and traceability of the drilling depth during the test, key data support is provided for evaluating the influence of drill wear on drilling efficiency, and the accuracy and reliability of the test results are improved.
[0015] 2、By setting the debris weighing mechanism, the tension sensor weighs the debris falling into the debris collection box in real time, and sends the weight value to the PLC controller, the weight value can directly reflect the debris removal capacity of the electric hammer drill, when the detected weight is less than a certain range of the preset threshold value of the PLC controller, it indicates that the debris removal efficiency of the drill helical groove is significantly reduced due to wear, this mechanism can accurately quantify the change of debris removal capacity, avoid the risk of sticking caused by poor debris removal, provide direct data support for judging the wear degree of the helical groove, and realize automatic recording and analysis of the amount of debris, improve the reliability of the test results.
[0016] 3、Through the temperature detection mechanism, the temperature sensor in the air suction pipe can detect the temperature of the hot air generated during drilling in real time, and send the temperature value to the PLC controller, when the detected temperature value exceeds a certain range of the preset threshold value of the PLC controller, it indicates that the drill generates heat due to increased friction caused by wear, this mechanism can early warning abnormal temperature rise caused by dull cutting edge or poor debris removal, prevent overheating from causing drill annealing or motor overload, and at the same time, through the recording and analysis of temperature data, provide basis for evaluating the heat dissipation performance of the drill and optimizing the drilling parameters, and ensure the safety of the test process and the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is a perspective view of a lithium electric hammer performance test machine provided by the application; Figure 2 is a perspective view of a clamping mechanism of a lithium electric hammer performance test machine provided by the application; Figure 3 is a perspective view of a drilling depth monitoring mechanism of a lithium electric hammer performance test machine provided by the application; Figure 4 is a perspective view of a positioning mechanism of a lithium electric hammer performance test machine provided by the application; Figure 5 is a perspective view of a lithium electric hammer performance test machine anti-splashing mechanism provided by the application; Figure 6 is a perspective view of a debris weighing mechanism of a lithium electric hammer performance test machine provided by the application; Figure 7 This is a perspective view of the temperature detection mechanism of a lithium battery electric hammer performance testing machine provided by the present invention.
[0018] In the diagram: 1. Frame, 2. First hydraulic cylinder, 3. L-shaped support plate, 4. Positioning platform, 5. Positioning hole, 6. Clamping mechanism, 61. First fixed seat, 62. Second hydraulic cylinder, 63. Arc-shaped clamping plate, 7. Drilling depth monitoring mechanism, 71. Slide groove, 72. Insulating slider, 73. Resistance rod, 74. Conductive sleeve, 8. Positioning mechanism, 81. Relief groove, 82. Third hydraulic cylinder, 83. Arc-shaped positioning plate, 9. Anti-splash mechanism, 91. Second fixed seat, 92. Fourth hydraulic cylinder, 93. Arc-shaped anti-splash plate, 10. Debris weighing mechanism, 101. Debris discharge port, 102. Debris collection box, 103. Tension sensor, 104. Box base, 11. Temperature detection mechanism, 111. Exhaust box, 112. Exhaust fan, 113. Connecting pipe, 114. Exhaust pipe, 115. Temperature sensor, 116. Protective mesh, 117. Filter screen, 12. PLC controller. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0020] like Figures 1-7 As shown, a lithium-ion battery hammer performance testing machine includes a frame 1, a first hydraulic cylinder 2, an L-shaped support plate 3, and a positioning platform 4. The first hydraulic cylinder 2 is fixedly mounted on one side of the top of the frame 1. The L-shaped support plate 3 is placed on the top of the frame 1, and one side of the L-shaped support plate 3 is fixedly connected to the moving end of the first hydraulic cylinder 2. The positioning platform 4 is fixedly mounted on the other side of the top of the frame 1, and a positioning hole 5 is provided on the side wall of the positioning platform 4. The interior of the positioning hole 5 is used to place hard materials. A recycling bin is fixedly installed inside the frame 1 for recycling the generated waste materials. The machine also includes: The clamping mechanism 6 is disposed on the upper surface of the L-shaped support plate 3 and is used to fix the electric hammer. The clamping mechanism 6 includes two first fixed seats 61 symmetrically fixed on the upper surface of the L-shaped support plate 3. The side walls of the two first fixed seats 61 are each fixedly provided with a second hydraulic cylinder 62. The moving ends of the two second hydraulic cylinders 62 are each fixedly provided with an arc-shaped clamping plate 63. The two second hydraulic cylinders 62 extend and drive the two arc-shaped clamping plates 63 to move closer to each other, thereby clamping and fixing the new electric hammer.
[0021] The drilling depth monitoring mechanism 7 is arranged on the top of the frame 1, and the drilling depth monitoring mechanism 7 is connected with the lower surface of the L-shaped supporting plate 3. The drilling depth monitoring mechanism 7 is used for monitoring the drilling depth of the drill bit of the electric hammer. The drilling depth monitoring mechanism 7 comprises a sliding groove 71 arranged horizontally on the top of the frame 1. An insulating sliding block 72 is horizontally arranged in the sliding groove 71. The top of the insulating sliding block 72 is fixedly connected with the lower surface of the L-shaped supporting plate 3. An electric resistance rod 73 is horizontally fixedly arranged in the sliding groove 71. A conductive sleeve 74 is slidably arranged on the rod wall of the electric resistance rod 73. The conductive sleeve 74 is fixedly arranged in the insulating sliding block 72. When the first hydraulic cylinder 2 is extended and the L-shaped supporting plate 3 is pushed to move towards the positioning table 4, the L-shaped supporting plate 3 drives the insulating sliding block 72 to move in the sliding groove 71. The conductive sleeve 74 on the insulating sliding block 72 moves on the electric resistance rod 73, changes the resistance value of the electric resistance rod 73 connected in the circuit, and calculates the depth of the drilling hole by detecting the current change of the two ends of the electric resistance rod 73.
[0022] The positioning mechanism 8 is arranged in the positioning table 4 and is arranged on the upper side of the positioning hole 5. The positioning mechanism 8 is used for positioning and installing the material. The positioning mechanism 8 comprises a retreat groove 81 arranged in the positioning table 4. A third hydraulic cylinder 82 is fixedly arranged in the positioning table 4. The moving end of the third hydraulic cylinder 82 extends into the retreat groove 81 and is fixedly provided with an arc-shaped positioning plate 83. When the third hydraulic cylinder 82 is extended, the arc-shaped positioning plate 83 is driven to move downwards, and the hard material is positioned and installed in the positioning hole 5.
[0023] The anti-splashing mechanism 9 is arranged on the side wall of the positioning table 4 and blocks the upper part of the positioning hole 5. The anti-splashing mechanism 9 comprises a second fixed seat 91 fixedly arranged on the side wall of the positioning table 4. A fourth hydraulic cylinder 92 is fixedly arranged on the second fixed seat 91. The moving end of the fourth hydraulic cylinder 92 is fixedly provided with an arc-shaped anti-splashing plate 93. The arc-shaped anti-splashing plate 93 is located at the periphery of the positioning hole 5. When the hard material is installed, the fourth hydraulic cylinder 92 is controlled to retract, so that the arc-shaped anti-splashing plate 93 moves upwards. When the test is performed, the fourth hydraulic cylinder 92 is controlled to extend, and the arc-shaped anti-splashing plate 93 is driven to move downwards to the periphery of the positioning hole 5, so as to prevent the splashing of the drill bit when drilling.
[0024] The debris weighing mechanism 10 is arranged on the top of the rack 1 and is located below the positioning hole 5. The degree of wear of the spiral groove of the electric hammer drill bit is judged by weighing the debris. The debris weighing mechanism 10 comprises a debris discharge port 101 arranged on the top of the rack 1. A debris collecting box 102 is arranged on the top of the rack 1 and is located below the debris discharge port 101. Two tension sensors 103 are symmetrically arranged between the top of the debris collecting box 102 and the top of the rack 1. A box bottom support 104 is fixedly arranged at the bottom of the debris collecting box 102 by bolts. The debris generated by drilling falls into the debris discharge port 101 and finally enters the debris collecting box 102. The top of the debris collecting box 102 is provided with the tension sensors 103, so that the debris collecting box 102 and the falling debris can be weighed. When it is necessary to clean the inside of the debris collecting box 102, the bolts are loosened by a wrench, so that the box bottom support 104 is taken out from the bottom of the debris collecting box 102.
[0025] The temperature detection mechanism 11 is arranged on the side wall of the positioning table 4 and is connected with the anti-splashing mechanism 9. The temperature detection mechanism 11 comprises an air extraction box 111 fixedly arranged on the side wall of the positioning table 4. An air extractor 112 is fixedly arranged on one side of the air extraction box 111. A connecting pipe 113 is fixedly arranged on the other side of the air extraction box 111. The arc-shaped anti-splashing plate 93 adopts a hollow structure. One end of the connecting pipe 113 away from the air extraction box 111 is fixedly connected with the side wall of the arc-shaped anti-splashing plate 93. An air extraction pipe 114 is fixedly arranged on the inner side wall of the arc-shaped anti-splashing plate 93. A temperature sensor 115 is fixedly arranged in the air extraction pipe 114. A protective screen 116 is fixedly arranged at the end of the air extraction pipe 114 to shield the temperature sensor 115. A filter screen 117 (the filter screen 117 is a multi-layer structure. A coarse filter layer is made of nylon mesh material. The mesh is relatively large and can effectively intercept large particles in the air, such as concrete debris, larger metal particles and the like. A medium filter layer is made of glass fiber and can further capture and filter particles of 1-5 μm, such as fine dust generated during drilling. A high-efficiency filter layer is made of superfine glass fiber filter paper and has a very high filtering efficiency for particles of ≥0.5 μm) is fixedly arranged in the air extraction box 111. The air extractor 112 works to extract the gas in the air extraction box 111, so that the connecting pipe 113, the arc-shaped anti-splashing plate 93 and the air extraction pipe 114 are in a negative pressure state and inhale the hot gas generated by drilling. The temperature sensor 115 in the air extraction pipe 114 detects the temperature of the inhaled hot gas. The gas inhaled into the air extraction box 111 contains impurities. The filter screen 117 in the air extraction box 111 can filter the impurities in the gas. The filtered gas is discharged outward by the air extractor 112.
[0026] The PLC controller 12 is fixedly arranged on the top of the rack 1. The first hydraulic cylinder 2, the clamping mechanism 6, the drilling depth monitoring mechanism 7, the positioning mechanism 8, the anti-splashing mechanism 9, the debris weighing mechanism 10 and the temperature detection mechanism 11 are electrically connected with the PLC controller 12.
[0027] The operation principle of the present application is described as follows: before testing, the tester first prepares for testing, takes a new electric hammer and places it on the upper surface of the L-shaped supporting plate 3, operates the PLC controller 12 to start the two second hydraulic cylinders 62, the two second hydraulic cylinders 62 are elongated, respectively drive the two arc-shaped clamping plates 63 to relatively close, clamp and fix the new electric hammer, then the tester puts the hard material (the hard material is concrete or metal material, in a column structure) into the positioning hole 5, operates the PLC controller 12 to start the third hydraulic cylinder 82, the third hydraulic cylinder 82 is extended, drives the arc-shaped positioning plate 83 to move downward, and installs the hard material in the positioning hole 5, then the tester connects the power supply of the new electric hammer, makes the drill bit of the new electric hammer work, at the same time, operates the PLC controller 12 to start the first hydraulic cylinder 2, the first hydraulic cylinder 2 is elongated, pushes the L-shaped supporting plate 3 to move towards the positioning table 4, the drill bit of the new electric hammer approaches the hard material inside the positioning hole 5, until a hole is drilled on the surface of the hard material; During the drilling process of the new electric hammer, the bottom L-shaped supporting plate 3 drives the insulating sliding block 72 to move in the sliding groove 71, the conductive sleeve 74 on the insulating sliding block 72 moves on the resistance rod 73, increases the resistance value of the resistance rod 73 connected to the circuit, reduces the current in the circuit, connects the measuring circuit to both ends of the resistance rod 73, detects the current change, after amplification and filtering processing, feeds back to the PLC controller 12, the PLC controller 12 calculates the drilling depth of the drill bit of the new electric hammer into the hard material according to the current change (for example: the current decreases by 0.1A, the drill bit drills 5mm), because the distance from the first hydraulic cylinder 2 to the positioning table 4 is fixed, the distance from the end of the drill bit to the hard material is fixed, when the PLC controller 12 calculates the drilling depth, the total distance of the drill bit movement is subtracted from the distance from the end of the drill bit to the hard material, and the obtained is the drilling depth, during the process, the PLC controller 12 records the drilling time, and automatically enters the drilling depth and time into the system as a reference threshold value; When the new electric hammer drills, the tester operates the PLC controller 12 to start the fourth hydraulic cylinder 92, the fourth hydraulic cylinder 92 is elongated, drives the arc-shaped anti-splashing plate 93 to move downward to the periphery of the positioning hole 5, prevents the drill bit from splashing when drilling, the drill bit falls into the chip discharge port 101, and finally enters the chip collection box 102, because the chip collection box 102 is provided with a tension sensor 103 at the top, the chip collection box 102 and the falling chips can be weighed, and the weight value is sent to the PLC controller 12, the weight is the amount of drill bits discharged by the new electric hammer, the PLC controller 12 automatically enters it into the system as a reference threshold value; In the drilling process of the new electric hammer, the tester operates the PLC controller 12 to start the air extractor 112. The air extractor 112 works to extract the gas in the air extraction box 111, so that the connecting pipe 113, the arc-shaped anti-splashing plate 93 and the air extraction pipe 114 are in a negative pressure state, inhaling the hot gas generated during drilling. The temperature sensor 115 in the air extraction pipe 114 detects the temperature of the inhaled hot gas and sends the temperature value to the PLC controller 12. The temperature value is the temperature value generated during drilling of the drill bit of the new electric hammer. The PLC controller 12 automatically records it as a reference threshold. The gas inhaled into the air extraction box 111 contains impurities (such as concrete debris, metal particles, dust, etc.). The filter screen 117 in the air extraction box 111 is a multi-layer structure (in turn, coarse filter layer, medium filter layer, high-efficiency filter layer), which can filter impurities in the gas. The filtered gas is discharged outward by the air extractor 112; After the above test preparation is completed, the tester removes the new electric hammer, cleans the debris in the debris collection box 102, then takes a used electric hammer and installs it on the L-shaped supporting plate 3, at the same time, removes the hard material drilled in the positioning hole 5, puts a new hard material, and completes the positioning installation by driving the arc-shaped positioning plate 83 through the third hydraulic cylinder 82. Then, the wear degree of the drill bit of the used electric hammer is tested. The tester operates the PLC controller 12 to start the first hydraulic cylinder 2, so that the first hydraulic cylinder 2 drives the L-shaped supporting plate 3 and the used electric hammer on the upper surface to move the same distance as when testing the new electric hammer, ensuring that the drill bit of the used electric hammer drills a hole of the same depth in the hard material. The built-in timer in the PLC controller 12 synchronously records the drilling time. If the time value exceeds the predetermined threshold of the PLC controller 12 by a certain range (such as more than 30% of the drilling time of the new electric hammer), it is determined that the drill bit of the used electric hammer is severely worn. During drilling, the debris generated falls into the debris collection box 102. The pull sensor 103 weighs the falling debris in real time. If the weight detected by the pull sensor 103 is less than the predetermined threshold of the PLC controller 12 by a certain range (such as less than 50% of the debris removal amount of the new electric hammer), it indicates that the debris removal capacity of the drill bit of the used electric hammer is reduced due to wear, and it is determined that the wear is severe. In addition, the hot gas generated during drilling is sucked into the air extraction box 111 by the air extraction pipe 114. The temperature sensor 115 in the air extraction pipe 114 detects the temperature of the hot gas. If the temperature value detected by the temperature sensor 115 exceeds the predetermined threshold of the PLC controller 12 by a certain range (such as higher than 20℃ of the drilling temperature of the new electric hammer), it indicates that the drill bit of the used electric hammer generates heat due to increased friction caused by wear, and it is determined that the wear is severe. After the test is completed, the worker removes the tested electric hammer, and at the same time, the hard material after the test is put into the recycling box.
[0028] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A lithium-ion electric hammer performance testing machine, comprising a frame (1), a first hydraulic cylinder (2), an L-shaped support plate (3), and a positioning platform (4), wherein the first hydraulic cylinder (2) is fixedly disposed on one side of the top of the frame (1), the L-shaped support plate (3) is placed on the top of the frame (1), and one side of the L-shaped support plate (3) is fixedly connected to the moving end of the first hydraulic cylinder (2), and the positioning platform (4) is fixedly disposed on the other side of the top of the frame (1), and a positioning hole (5) is provided on the side wall of the positioning platform (4), characterized in that, Also includes: A clamping mechanism (6) is provided on the upper surface of the L-shaped support plate (3), and the clamping mechanism (6) is used to fix the electric hammer in place; The drilling depth monitoring mechanism (7) is located on the top of the frame (1) and is connected to the lower surface of the L-shaped support plate (3). The drilling depth monitoring mechanism (7) is used to monitor the feed depth of the electric hammer. The positioning mechanism (8) is located inside the positioning platform (4) and is located on the upper side of the positioning hole (5) for positioning and installing materials. A splash-proof mechanism (9) is provided on the side wall of the positioning platform (4), and the splash-proof mechanism (9) blocks the upper part of the positioning hole (5); The chip weighing mechanism (10) is located on the top of the frame (1) and below the positioning hole (5). The wear degree of the spiral groove of the electric hammer drill bit is determined by weighing the chips. Temperature detection mechanism (11) is set on the side wall of the positioning platform (4), and temperature detection mechanism (11) is connected to splash prevention mechanism (9); The PLC controller (12) is fixedly installed on the top of the frame (1). The first hydraulic cylinder (2), clamping mechanism (6), drilling depth monitoring mechanism (7), positioning mechanism (8), anti-splash mechanism (9), debris weighing mechanism (10) and temperature detection mechanism (11) are all electrically connected to the PLC controller (12).
2. The lithium battery electric hammer performance testing machine according to claim 1, characterized in that, The clamping mechanism (6) includes two first fixed seats (61) symmetrically fixed on the upper surface of the L-shaped support plate (3). The side walls of the two first fixed seats (61) are each fixed with a second hydraulic cylinder (62), and the moving ends of the two second hydraulic cylinders (62) are each fixed with an arc-shaped clamping plate (63).
3. The lithium battery electric hammer performance testing machine according to claim 2, characterized in that, The drilling depth monitoring mechanism (7) includes a slide groove (71) arranged horizontally on the top of the frame (1). An insulating slider (72) is arranged horizontally inside the slide groove (71), and the top of the insulating slider (72) is fixedly connected to the lower surface of the L-shaped support plate (3). A resistance rod (73) is fixedly arranged horizontally inside the slide groove (71). A conductive sleeve (74) is slidably arranged on the wall of the resistance rod (73), and the conductive sleeve (74) is fixedly arranged inside the insulating slider (72).
4. The lithium battery electric hammer performance testing machine according to claim 3, characterized in that, The positioning mechanism (8) includes a relief groove (81) disposed inside the positioning platform (4). A third hydraulic cylinder (82) is fixedly disposed inside the positioning platform (4). The moving end of the third hydraulic cylinder (82) extends into the relief groove (81) and is fixedly disposed with an arc-shaped positioning plate (83).
5. A lithium-ion electric hammer performance testing machine according to claim 4, characterized in that, The anti-splash mechanism (9) includes a second fixed seat (91) fixedly installed on the side wall of the positioning platform (4), a fourth hydraulic cylinder (92) fixedly installed on the second fixed seat (91), an arc-shaped anti-splash plate (93) fixedly installed at the moving end of the fourth hydraulic cylinder (92), and the arc-shaped anti-splash plate (93) is located around the positioning hole (5).
6. The lithium battery electric hammer performance testing machine according to claim 5, characterized in that, The chip weighing mechanism (10) includes a chip discharge port (101) located at the top of the frame (1), a chip collection box (102) located at the top of the frame (1) and below the chip discharge port (101), and two tension sensors (103) are symmetrically fixed between the top of the chip collection box (102) and the top of the frame (1), and a box bottom support (104) is fixed to the bottom of the chip collection box (102) by bolts.
7. A lithium-ion battery electric hammer performance testing machine according to claim 6, characterized in that, The temperature detection mechanism (11) includes an exhaust box (111) fixedly installed on the side wall of the positioning platform (4). An exhaust fan (112) is fixedly installed on one side of the exhaust box (111), and a connecting pipe (113) is fixedly installed on the other side of the exhaust box (111). The arc-shaped anti-splash plate (93) adopts a hollow structure. The end of the connecting pipe (113) away from the exhaust box (111) is fixedly connected to the side wall of the arc-shaped anti-splash plate (93). An exhaust pipe (114) is fixedly installed on the inner side wall of the arc-shaped anti-splash plate (93). A temperature sensor (115) is fixedly installed inside the exhaust pipe (114), and a protective mesh (116) is fixedly installed at the end of the exhaust pipe (114) to shield the temperature sensor (115). A filter screen (117) is fixedly installed inside the exhaust box (111).
8. A testing method applied to the lithium-ion electric hammer performance testing machine as described in claim 7, characterized in that, The testing method includes the following steps: S1. The tester places the new electric hammer on the upper surface of the L-shaped support plate (3), operates the PLC controller (12) to start the two second hydraulic cylinders (62) of the clamping mechanism (6), and drives the arc-shaped clamping plate (63) to clamp the new electric hammer. Then, the hard material is placed into the positioning hole (5) of the positioning table (4), and the third hydraulic cylinder (82) of the positioning mechanism (8) is started to drive the arc-shaped positioning plate (83) to move down and fix the hard material. S2. Turn on the power supply of the new electric hammer to make its drill bit move. Operate the PLC controller (12) to start the first hydraulic cylinder (2) and push the L-shaped support plate (3) to move towards the positioning table (4). At this time, the insulating slider (72) of the drilling depth monitoring mechanism (7) drives the conductive sleeve (74) to slide on the resistance rod (73) and monitor the drilling distance of the drill bit through the change of current signal. S3. During the drilling process, the fourth hydraulic cylinder (92) of the anti-splash mechanism (9) is activated, which drives the arc-shaped anti-splash plate (93) to block the periphery of the positioning hole (5). The generated debris falls into the debris collection box (102) through the chip discharge port (101). The tension sensor (103) of the chip weighing mechanism (10) weighs the chip discharge weight in real time and transmits the data to the PLC controller (12). S4. The exhaust fan (112) of the temperature detection mechanism (11) is started synchronously. A negative pressure is formed through the connecting pipe (113) and the exhaust pipe (114) to draw in the hot air generated by the drilling. The temperature sensor (115) detects the temperature of the hot air. After the impurities are filtered by the filter screen (117) of the exhaust box (111), the gas is discharged. The temperature data is synchronously transmitted to the PLC controller (12). S5. After the test, replace the used electric hammer with a new hard material and repeat steps S1-S4. The PLC controller (12) compares the drilling time, chip removal weight, and temperature data of the new electric hammer and the used electric hammer to determine the degree of drill bit wear.