Induction cooker part performance tester

Abstract

The invention relates to the technical field of part performance testers, and particularly provides an induction cooker part performance tester. Comprising a triangular bracket, an impact testing mechanism, a counterweight adding mechanism, an expansion integrated locking group and a counterweight locking group. According to the electromagnetic oven part performance tester designed by the invention, through the cooperation of the expansion integrated locking group, the plurality of clamping lock groups, the counterweight adding mechanism and the counterweight locking group, the impact of different contact areas under the same weight and the impact of different gravities under the same contact area on an oven surface are realized; the situation that the surface of the induction cooker bears the impact of objects with the same contact surface and different weights and objects with different contact surfaces and the same weight in the actual use process is comprehensively simulated, the comprehensiveness and accuracy of impact detection of the surface of the induction cooker are greatly improved, and then the capability of the surface of the induction cooker for resisting the impact of external objects can be comprehensively evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of parts performance testers, and specifically provides an induction cooker parts performance tester. Background Art

[0002] An induction cooker is a kitchen appliance that uses the principle of electromagnetic induction for heating. It generates a high-frequency alternating magnetic field through electric current. When a conductive pot (such as an iron pot or a stainless steel pot) is placed on the induction cooker panel, eddy currents are induced at the bottom of the pot, thereby heating the pot.

[0003] The induction cooker is mainly composed of the following key components: heating coil, stove surface, electronic control system, temperature control system and stove body. The stove surface is usually made of heat-resistant ceramic plate or other similar materials. It is in direct contact with the cooker during use and needs to be able to resist the impact of external objects to avoid damage caused by accidental dropping of heavy objects. Therefore, the stove surface of the induction cooker needs to be tested for impact strength.

[0004] However, the current instruments for impact testing of stove surfaces use a relatively simple testing method, which only impacts the stove surface through a fixed contact surface and a fixed gravity. During actual use, the stove surface of the induction cooker will be impacted by different contact surfaces and different gravity. A single testing method is difficult to comprehensively and accurately test the impact strength results of the stove surface. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides an induction cooker parts performance tester to solve the technical problems in the related art.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: an induction cooker parts performance tester, comprising: a triangular bracket, the triangular bracket is composed of a triangular plate and three supporting legs installed at the bottom thereof, the middle part of the triangular plate is slidably connected to an impact testing mechanism, the impact testing mechanism comprises a pulling cylinder slidably connected to the middle part of the triangular plate, the lower end of the pulling cylinder is a cone with a diameter gradually increasing downward, an impact head is installed at the bottom of the pulling cylinder, the impact head is a disc with a concave vertical cross-section, and the side wall of the impact head is slidably sleeved up and down with a plurality of surface increasing rings coaxial with the impact head and arranged sequentially from the inside to the outside.

[0007] Two adjacent surface increasing rings and the impact head and its adjacent surface increasing ring are connected through a locking group. The impact head and multiple surface increasing rings are connected to each other by corresponding locking groups to form a stepped shape arranged upward from the inside to the outside.

[0008] A counterweight adding mechanism which is slidably sleeved on the outer wall of the pulling cylinder is installed at the bottom of the triangular plate; an expansion integrated locking group and a counterweight locking group are installed on the pulling cylinder and the impact head.

[0009] The counterweight adding mechanism includes a fixed cylinder installed at the bottom of the triangular plate, the inner wall of the fixed cylinder is provided with two limiting slide grooves symmetrically arranged along its circumference, a plurality of counterweight rings evenly arranged from top to bottom are placed in the fixed cylinder, a limiting group which is plugged into the limiting slide groove is installed on the outer ring surface of the counterweight ring, a push unlocking group which is used to unlock the limiting group is installed on the limiting slide groove, the inner ring surfaces of the plurality of counterweight rings form a cone whose diameter gradually decreases upward, a guide groove is provided on the side wall of the pulling cylinder, and a guide strip which is slidably connected to the guide groove up and down is installed on the inner ring surface of the counterweight ring.

[0010] The push unlocking group cooperates with the limiting group on the lowest counterweight ring in the fixed cylinder each time, removes the lowest counterweight ring in the fixed cylinder, and then slides the counterweight ring downward and places it on the impact head.

[0011] In a possible implementation, ribs evenly arranged along the circumference of the fixing tube are installed between the outer wall of the fixing tube and the bottom of the triangular plate.

[0012] In one possible implementation, the locking group includes a receiving groove opened on the inner ring surface of the face-enhancing ring and arranged evenly along its circumference, a plug-in rod is installed in the receiving groove through a reset spring, a through slot located above the corresponding receiving groove is opened on the face-enhancing ring and the impact head, and the end of the plug-in rod away from the reset spring is arc-shaped, and the plug-in rod connected to the face-enhancing ring is plugged into the through slot on the face-enhancing ring or the impact head located on the inner ring surface of the face-enhancing ring.

[0013] In one possible implementation, the expanded integrated locking group includes a screw rod rotatably installed on the inner ring surface of the impact head and concentric with the impact head, a rotating locking piece penetrating the top of the pulling cylinder is installed on the top of the screw rod, a lifting disk is sleeved on the screw rod, the lifting disk and the screw rod are connected by threaded cooperation, an insertion push rod is slidably connected in the through slot on the impact head, a swing rod is hinged between the insertion push rod and the lifting disk, except for the impact head and the outermost surface increasing ring, sliding strips are slidably installed in the through slots on the other surface increasing rings, a retaining groove slidably connected to the sliding strip is also provided in the through slot, and a reset spring 2 is installed between the retaining groove and the sliding strip.

[0014] In a possible implementation, the rotary locking member is a rotating rod connected to the top of the pulling cylinder by threaded engagement, and the lower end of the rotating rod is connected to the screw rod in an up-and-down sliding manner.

[0015] In a possible implementation, the limiting group includes a receiving groove formed on the outer ring surface of the counterweight ring, a blocking rod is installed in the receiving groove via a push spring, and the blocking rod is slidably matched with the limiting sliding groove.

[0016] In one possible implementation, the push-to-unlock group includes two insertion rods connected to the outer wall of the fixed cylinder and arranged symmetrically along its circumference. The insertion rods are slidably inserted into the limiting slide groove. The insertion rods are located near the lower end of the limiting slide groove. The insertion rods and the outer wall of the fixed cylinder are connected in three phases through a reset spring.

[0017] In one possible implementation, the counterweight locking group includes locking grooves formed on the inner surface of the counterweight ring, the locking grooves arranged from top to bottom are staggered along the circumference of the pulling cylinder, the conical side walls of the pulling cylinder are provided with rectangular through grooves corresponding to the locking grooves one by one, a locking strip is slidably connected to the rectangular through grooves, a reset spring four is installed between the locking strip and the inner wall of the pulling cylinder, the inner wall of the pulling cylinder is connected to a wedge block arranged along its circumference and sliding up and down through a fixed strip, the wedge block corresponds to the locking strip one by one, and a driving member for driving the wedge block to move up and down is installed on the impact head.

[0018] In one possible implementation, the driving member is composed of a sleeve fixedly installed at the bottom of the wedge block and a rotating rod installed in the sleeve. The rotating rod and the sleeve are connected by threaded cooperation. An installation groove corresponding to the rotating rod is opened at the bottom of the impact head, and the rotating rod passes through the installation groove.

[0019] In a possible implementation, two inclined grooves are provided near the lower end of the inner annular surface of the fixing cylinder and are symmetrically arranged along its circumference. The inclined grooves are aligned with the limiting sliding grooves in the vertical direction, and the two inclined grooves are arranged in an eight-shaped shape.

[0020] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. An induction cooker parts performance tester designed by the present invention, by expanding the integrated locking group, multiple locking groups, a counterweight adding mechanism and a counterweight locking group, can realize the impact of different contact areas under the same weight on the stove surface and the impact of different gravity under the same contact area. It comprehensively simulates the situation when the stove surface of the induction cooker is subjected to the impact of objects with different weights on the same contact surface and objects with the same weight on different contact surfaces during actual use, greatly improving the comprehensiveness and accuracy of the stove surface impact detection, and thus being able to comprehensively evaluate the ability of the stove surface to resist the impact of external objects.

[0021] 2. The present invention expands the integrated locking group and cooperates with multiple locking groups arranged from the inside to the outside in sequence, moves the surface increasing ring downward in sequence, makes the bottom of the surface increasing ring flush with the bottom of the impact head, adjusts the impact contact surface between the impact test mechanism and the furnace surface, and integrates the impact head and multiple surface increasing rings after adjustment to avoid the surface increasing ring and the impact head being staggered up and down during the test and affecting the accuracy of the test, and at the same time greatly improves the convenience of adjusting the impact contact surface of the impact test mechanism.

[0022] 3. The push-unlocking group in the present invention cooperates with the limiting group on the counterweight ring located at the bottom of the fixed cylinder each time. The counterweight ring located at the bottom of the fixed cylinder is removed, and then the counterweight ring is slid downward and placed on the impact head. The counterweight ring is then locked on the impact head through the counterweight locking group, which further improves the convenience and efficiency of adjusting the gravity of the impact test mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention.

[0025] Figure 2 It is a second overall three-dimensional structural schematic diagram of the present invention.

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the counterweight adding mechanism and the impact testing mechanism of the present invention.

[0027] Figure 4 It is a cross-sectional three-dimensional structural schematic diagram of the counterweight adding mechanism and the impact testing mechanism of the present invention.

[0028] Figure 5 The present invention Figure 4 Enlarged view of point A in .

[0029] Figure 6 It is a schematic diagram of the cross-sectional structure of the working state of the present invention.

[0030] Figure 7 It is a partial structural schematic diagram of the locking group and the expansion integrated locking group of the present invention.

[0031] Figure numerals: 1, triangular bracket; 10, triangular plate; 11, supporting leg; 2, impact test mechanism; 20, lifting cylinder; 21, impact head; 22, surface increasing ring; 23, locking group; 230, storage slot; 231, reset spring 1; 232, plug-in support rod; 233, through slot; 3, counterweight adding mechanism; 30, fixing cylinder; 301, inclined groove; 302, rib plate; 31, limiting slide groove; 32, counterweight ring; 33, limiting group; 330, plug-in lever; 331, push spring; 34, push unlocking group; 340, plug-in pressure rod ; 341, reset spring three; 35, guide groove; 36, guide strip; 24, expansion integrated locking group; 240, screw; 241, rotation locking piece; 242, lifting plate; 243, push rod; 244, swing rod; 245, sliding strip; 246, reset spring two; 25, counterweight locking group; 250, locking groove; 251, rectangular through groove; 252, lock strip; 253, reset spring four; 254, wedge block; 260, rotating rod; 261, sleeve; 262, installation groove; 4, induction cooker; 5, stove surface. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] See also Figure 1 , an induction cooker parts performance tester, comprising: a triangular bracket 1, the triangular bracket 1 is composed of a triangular plate 10 and three supporting legs 11 installed at the bottom thereof, the middle part of the triangular plate 10 is slidably connected to an impact testing mechanism 2, the impact testing mechanism 2 comprises a pulling cylinder 20 slidably connected to the middle part of the triangular plate 10, the lower end of the pulling cylinder 20 is in a conical shape with a diameter gradually increasing downward, an impact head 21 is installed at the bottom of the pulling cylinder 20, the impact head 21 is in a concave disc shape with a vertical cross section, and the side wall of the impact head 21 is slidably sleeved up and down with a plurality of surface increasing rings 22 coaxial with the impact head and arranged sequentially from the inside to the outside.

[0035] See also Figure 1 and Figure 4 Two adjacent surface increasing rings 22 and the impact head 21 and its adjacent surface increasing ring 22 are connected by a locking group 23. The impact head 21 and multiple surface increasing rings 22 are connected to their corresponding locking groups 23 to form a stepped shape arranged upward from the inside to the outside.

[0036] See also Figure 1 , Figure 3 , Figure 4 and Figure 6 A counterweight adding mechanism 3 is installed at the bottom of the triangular plate 10 and is slidably mounted on the outer wall of the pulling cylinder 20 ; an expansion integrated locking group 24 and a counterweight locking group 25 are installed on the pulling cylinder 20 and the impact head 21 .

[0037] In the initial state, the impact weight applied by the impact testing mechanism 2 to the furnace surface 5 is the weight of the impact head 21 plus the multiple surface increasing rings 22. The impact head 21 and the multiple surface increasing rings 22 are driven upward by manually pulling the pulling cylinder 20, and then the pulling cylinder 20 is directly released, so that the pulling cylinder 20 drives the impact head 21 and the multiple surface increasing rings 22 to move downward quickly, thereby performing an impact test on the furnace surface 5.

[0038] Afterwards, the integrated locking group 24 is expanded and matched with the multiple locking groups 23 arranged from the inside to the outside, and the surface increasing ring 22 is moved down in sequence so that the bottom of the surface increasing ring 22 is flush with the bottom of the impact head 21. The impact contact surface of the impact test mechanism 2 on the furnace surface 5 is adjusted, and the impact head 21 after adjustment is integrated with the multiple surface increasing rings 22 to improve the stability of the connection between the impact head 21 and the surface increasing ring 22. Then, the furnace surface 5 is impact tested again, so as to conduct impact tests with different contact areas under the same weight.

[0039] See also Figure 2 , Figure 3 , Figure 4 and Figure 6 The counterweight adding mechanism 3 includes a fixed cylinder 30 installed at the bottom of the triangular plate 10, and the inner wall of the fixed cylinder 30 is provided with two limiting grooves 31 symmetrically arranged along its circumference, and a plurality of counterweight rings 32 evenly arranged from top to bottom are placed in the fixed cylinder 30, and the outer ring surface of the counterweight ring 32 is provided with a limiting group 33 plug-inly matched with the limiting groove 31, and the limiting groove 31 is provided with a push unlocking group 34 for unlocking the limiting group 33, and the inner ring surfaces of the plurality of counterweight rings 32 form a cone with a diameter gradually decreasing upward, and the side wall of the pulling cylinder 20 is provided with a guide groove 35, and the inner ring surface of the counterweight ring 32 is provided with a guide bar 36 connected to the guide groove 35 for sliding up and down.

[0040] The push-unlocking group 34 cooperates with the limiting group 33 on the counterweight ring 32 located at the bottom of the fixed cylinder 30 each time, removes the counterweight ring 32 located at the bottom of the fixed cylinder 30, and then slides the counterweight ring 32 downward and places it on the impact head 21, and locks the counterweight ring 32 on the impact head 21 through the counterweight locking group 25. At this time, the contact surface between the impact test mechanism 2 and the furnace surface 5 is not adjusted, thereby realizing the furnace surface 5 impact test with different gravity under the same contact surface.

[0041] By expanding the integrated locking group 24, multiple locking groups 23, the counterweight adding mechanism 3 and the counterweight locking group 25, the impact of different contact areas under the same weight and the impact of different gravity under the same contact area on the furnace surface 5 can be achieved, which fully simulates the situation when the furnace surface 5 is subjected to accidental impacts of objects of different weights on the same contact surface and objects of the same weight on different contact surfaces during actual use, thereby greatly improving the comprehensiveness and accuracy of the impact detection of the furnace surface 5.

[0042] See also Figure 2 Between the outer wall of the fixing tube 30 and the bottom of the triangular plate 10 , ribs 302 evenly arranged along the circumference of the fixing tube 30 are installed, and the ribs 302 are used to increase the stability of the installation of the fixing tube 30 .

[0043] See also Figure 4 , Figure 6 and Figure 7 The locking group 23 includes a receiving groove 230 that is evenly arranged along the circumference of the inner ring surface of the surface increasing ring 22, and a plug rod 232 is installed in the receiving groove 230 through a reset spring 231. The surface increasing ring 22 and the impact head 21 are both provided with a through slot 233 located above the corresponding receiving groove 230, and the end of the plug rod 232 away from the reset spring 231 is arc-shaped. The plug rod 232 connected to the surface increasing ring 22 is plugged into the through slot 233 on the surface increasing ring 22 or the impact head 21 located on the inner ring surface of the surface increasing ring 22.

[0044] In the initial state, the plug-in rod 232 connected to the surface increasing ring 22 is plugged into the through slot 233 on the surface increasing ring 22 or the impact head 21 located on the inner ring surface of the surface increasing ring 22. The impact head 21 and multiple surface increasing rings 22 are connected to their respective corresponding locking groups 23 to form a stepped shape arranged upward from the inside to the outside, so that the weight of the multiple surface increasing rings 22 acts on the impact head 21, and at the same time does not change the contact surface between the impact test mechanism 2 and the furnace surface 5.

[0045] See also Figure 4 , Figure 5 , Figure 6 and Figure 7The expansion integrated locking group 24 includes a screw 240 which is rotatably installed on the inner ring surface of the impact head 21 and is concentric with it. A rotating locking piece 241 that passes through the top of the pulling cylinder 20 is installed on the top of the screw 240. A lifting disk 242 is sleeved on the screw 240. The lifting disk 242 and the screw 240 are connected by threaded cooperation. A push rod 243 is slidably connected in the through slot 233 on the impact head 21. A swing rod 244 is hinged between the push rod 243 and the lifting disk 242. Except for the impact head 21 and the outermost surface-increasing ring 22, sliding strips 245 are slidably installed on the through slots 233 on the other surface-increasing rings 22. A retaining groove slidably connected to the sliding strip 245 is also provided in the through slot 233. A return spring 246 is installed between the retaining groove and the sliding strip 245.

[0046] When the contact surface between the impact test mechanism 2 and the furnace surface 5 needs to be adjusted, the screw 240 is driven to rotate by rotating the locking piece 241. During the rotation process, the screw 240 cooperates with the thread of the lifting plate 242 to drive the lifting plate 242 to move downward. The lifting plate 242 pushes the insertion push rod 243 to move through the swing rod 244. The insertion push rod 243 pushes the insertion support rod 232 in the through slot 233 on the surface increase ring 22 to squeeze the reset spring 231 to contract. When the corresponding insertion support rod 232 and the corresponding through slot 233 are pressed, the reset spring 231 is pressed. When the slot 233 is disengaged, the surface increasing ring 22 moves downward until its bottom is flush with the bottom of the impact head 21, thereby expanding the contact area between the impact test mechanism 2 and the furnace surface 5. At this time, the screw 240 continues to rotate and drives the lifting plate 242 to move downward, and the push rod 243 enters the through slot 233 on the adjacent surface increasing ring 22, thereby locking the impact head 21 with the surface increasing ring 22 after moving downward, avoiding the surface increasing ring 22 and the impact head 21 from interlacing up and down during the impact test, thereby affecting the contact effect between the impact test mechanism 2 and the furnace surface 5.

[0047] When it is necessary to increase the contact area of ​​an additional surface increasing ring 22 again, the rotary locking piece 241 is rotated again, so that the screw 240 drives the lifting plate 242 to continue to move downward, and the push rod 243 pushes the adjacent sliding strip 245. At this time, the reset spring 246 contracts, and the sliding strip 245 pushes the plug rod 232 connected to it to move, which also disengages the plug rod 232 from the through slot 233, so that the next surface increasing ring 22 moves downward until its bottom is flush with the bottom of the impact head 21, thereby expanding the contact area between the impact test mechanism 2 and the furnace surface 5 again. The screw 240 continues to rotate and drives the lifting plate 242 to move downward, and the push rod 243 pushes the adjacent sliding strip 245 into the through slot 233 on the next surface increasing ring 22, thereby locking the impact head 21 and the two surface increasing rings 22 that have moved downward as an integrated whole, greatly improving the convenience of locking the surface increasing ring 22 after adjustment.

[0048] When it is necessary to reduce the contact area between the impact test mechanism 2 and the furnace surface 5, the lifting plate 242 moves upward and pulls the push rod 243 toward the inner ring surface of the impact head 21 through the swing rod 244, so that multiple sliding strips 245 and the push rod 243 are disengaged from the corresponding through slots 233 in turn, and then the surface increasing ring 22 is pushed to move upward. When the insert rod 232 is aligned with the matching through slot 233, the insert rod 232 is inserted into the corresponding through slot 233 under the elastic force of the reset spring 231, thereby realizing the locking between adjacent surface increasing rings 22 and the surface increasing ring 22 and the impact head 21.

[0049] See also Figure 4 and Figure 5 The rotating locking piece 241 is a rotating rod connected to the top of the lifting cylinder 20 by threaded cooperation. The lower end of the rotating rod is connected to the screw 240 for upward and downward sliding. The rotating rod drives the screw 240 to rotate during the rotation process, so that the screw 240 drives the lifting plate 242 to move up and down by threaded cooperation. At the same time, through the threaded cooperation between the rotating rod and the lifting cylinder 20, the screw 240 is locked when it stops rotating.

[0050] See also Figure 6 The limiting group 33 includes a receiving groove formed on the outer ring surface of the counterweight ring 32 , in which a blocking rod 330 is installed via a push spring 331 , and the blocking rod 330 is slidably matched with the limiting sliding groove 31 .

[0051] See also Figure 6 The push-to-unlock group 34 includes two insertion rods 340 connected to the outer wall of the fixed cylinder 30 and arranged symmetrically along its circumference. The insertion rod 340 is slidably inserted into the limiting slide groove 31. The insertion rod 340 is located near the lower end of the limiting slide groove 31. The insertion rod 340 is connected to the outer wall of the fixed cylinder 30 through a return spring 341.

[0052] At the same time, the two insertion rods 340 are squeezed to move toward the fixed cylinder 30. The insertion rod 340 squeezes the shift rod 330 on the counterweight ring 32 located at the lower side of the limiting slide groove 31. The shift rod 330 moves into the receiving groove and squeezes the push spring 331 to contract until the two shift rods 330 are disengaged from the limiting slide groove 31. At this time, the counterweight ring 32 located at the bottom falls downward under the action of its own gravity and disengages from the fixed cylinder 30. After manually receiving the counterweight ring 32 from below, the counterweight ring 32 is placed on the impact head 21, and the counterweight ring 32 is locked above the impact head 21 through the counterweight locking group 25, thereby increasing the impact force under the same contact surface.

[0053] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The counterweight locking group 25 includes a locking groove 250 provided on the inner ring surface of the counterweight ring 32. The locking grooves 250 arranged from top to bottom are staggered along the circumference of the pulling cylinder 20. The conical side wall of the pulling cylinder 20 is provided with a rectangular through groove 251 corresponding to the locking groove 250. A locking strip 252 is slidably connected to the rectangular through groove 251. A return spring 253 is installed between the locking strip 252 and the inner wall of the pulling cylinder 20. The inner wall of the pulling cylinder 20 is connected to a wedge block 254 arranged along its circumference and sliding up and down through a fixing strip. The wedge block 254 corresponds to the locking strip 252 one by one, and a driving member for driving the wedge block 254 to move up and down is installed on the impact head 21.

[0054] See also Figure 2 , Figure 4 and Figure 5 The driving member is composed of a sleeve 261 fixedly installed at the bottom of the wedge block 254 and a rotating rod 260 installed in the sleeve 261. The rotating rod 260 is connected to the sleeve 261 by threaded fitting. A mounting groove 262 corresponding to the rotating rod 260 is provided at the bottom of the impact head 21, and the rotating rod 260 passes through the mounting groove 262.

[0055] After the counterweight ring 32 is placed on the impact head 21, the corresponding rotating rod 260 is rotated. The rotating rod 260 drives the sleeve 261 and the wedge block 254 to move upward through the threaded cooperation with the sleeve 261. The wedge block 254 moves upward along the fixed bar. During the upward movement of the wedge block 254, the corresponding locking bar 252 is pushed to move. The locking bar 252 is inserted into the locking groove 250 on the counterweight ring 32, thereby limiting the up and down movement of the counterweight ring 32 and locking the counterweight ring 32.

[0056] See also Figure 2 and Figure 6 The inner ring surface of the fixed cylinder 30 is provided with two inclined grooves 301 symmetrically arranged along its circumference near the lower end. The inclined grooves 301 are aligned with the limiting slide grooves 31 up and down, and the two inclined grooves 301 are arranged in an eight-shaped shape. When it is necessary to reduce the counterweight ring 32 on the impact head 21, the counterweight locking group 25 unlocks the counterweight ring 32 from the pulling cylinder 20, and then pushes the counterweight ring 32 to move upward. When the shift rod 330 contacts the inclined groove 301 and moves upward, the shift rod 330 moves into the receiving groove under the obstruction of the inclined groove 301. When the shift rod 330 is aligned with the limiting slide groove 31, the shift rod 330 enters the limiting slide groove 31 under the elastic force of the push spring 331, thereby connecting and locking the counterweight ring 32 with the fixed cylinder 30.

[0057] See also Figure 1-Figure 7During specific operation, the tester is placed on the induction cooker 4 so that the stove surface 5 is located directly below the impact testing mechanism 2, and then the impact test of the stove surface 5 of the induction cooker 4 is started. In the initial state, the impact weight applied to the stove surface 5 by the impact testing mechanism 2 is the weight of the impact head 21 plus the multiple surface-increasing rings 22 added together. The impact head 21 and the multiple surface-increasing rings 22 are driven to move upward by manually pulling the pulling cylinder 20, and then the pulling cylinder 20 is directly released, so that the pulling cylinder 20 drives the impact head 21 and the multiple surface-increasing rings 22 to move downward quickly, thereby performing an impact test on the stove surface 5.

[0058] Afterwards, the integrated locking group 24 is expanded and matched with the multiple locking groups 23 arranged from the inside to the outside, and the surface increasing ring 22 is moved down in sequence so that the bottom of the surface increasing ring 22 is flush with the bottom of the impact head 21, and the impact contact surface between the impact test mechanism 2 and the furnace surface 5 is adjusted. After the adjustment, the impact head 21 and the multiple surface increasing rings 22 are integrally locked, and then the furnace surface 5 is impact tested again, so as to perform impact tests with different contact areas under the same weight.

[0059] When it is necessary to adjust the impact gravity of the impact test, the push-unlocking group 34 cooperates with the limit group 33 on the corresponding counterweight ring 32, removes the counterweight ring 32 located at the bottom of the fixed tube 30, and then slides the counterweight ring 32 downward and places it on the impact head 21, and locks the counterweight ring 32 on the impact head 21 through the counterweight locking group 25. At this time, the impact contact surface between the impact test mechanism 2 and the furnace surface 5 is not adjusted to perform impact tests with different gravity under the same contact surface.

[0060] It should be noted that the test result is obtained by observing whether the furnace surface 5 is cracked.

[0061] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An induction cooker parts performance tester, characterized in that: include: The tripod bracket is composed of a triangular plate and three supporting legs installed at the bottom thereof, and the middle part of the triangular plate is connected with an impact test mechanism; The impact testing mechanism comprises a lifting cylinder connected to the middle of the triangular plate by sliding up and down, the lower end of the lifting cylinder is in a conical shape with a diameter gradually increasing downwards, an impact head is installed at the bottom of the lifting cylinder, the impact head is in a concave disc shape in vertical section, and the side wall of the impact head is slidably sleeved up and down with a plurality of surface increasing rings coaxial with it and arranged sequentially from the inside to the outside; Two adjacent surface-increasing rings and the impact head and its adjacent surface-increasing ring are connected by a locking group. The impact head and the plurality of surface-increasing rings are connected by their respective corresponding locking groups to form a stepped shape arranged upward from the inside to the outside. The bottom of the triangular plate is provided with a counterweight adding mechanism which is slidably sleeved on the outer wall of the lifting cylinder; the lifting cylinder and the impact head are provided with an expansion integrated locking group and a counterweight locking group; The expanded integrated locking group cooperates with a plurality of locking groups arranged sequentially from the inside to the outside in sequence, adjusts the impact contact surface of the impact test mechanism on the furnace surface and integrally locks the impact head and a plurality of surface-enhancing rings after adjustment.

2. The induction cooker parts performance tester according to claim 1, characterized in that: The locking group includes a receiving groove evenly arranged along the circumference of the inner ring surface of the surface increasing ring, a plug rod is installed in the receiving groove through a reset spring, and a through slot located above the corresponding receiving groove is opened on the surface increasing ring and the impact head, and the end of the plug rod away from the reset spring is arc-shaped, and the plug rod connected to the surface increasing ring is plugged into the through slot located on the inner ring surface of the surface increasing ring.

3. The induction cooker parts performance tester according to claim 2, characterized in that: The expanded integrated locking group includes a screw rod rotatably installed on the inner ring surface of the impact head and concentric with the impact head. A rotating locking piece that passes through the top of the pulling cylinder is installed on the top of the screw rod. A lifting disk is sleeved on the screw rod. The lifting disk and the screw are connected by threaded cooperation. An insertion push rod is slidably connected in the through slot on the impact head. A swing rod is hinged between the insertion push rod and the lifting disk. Except for the impact head and the outermost surface-increasing ring, sliding strips are slidably installed in the through slots on the other surface-increasing rings. A retaining groove that is slidably connected to the sliding strip is also provided in the through slot. A reset spring 2 is installed between the retaining groove and the sliding strip.

4. The induction cooker parts performance tester according to claim 1, characterized in that: The counterweight adding mechanism comprises a fixed cylinder installed at the bottom of the triangular plate, the inner wall of the fixed cylinder is provided with two limit slide grooves symmetrically arranged along its circumference, a plurality of counterweight rings evenly arranged from top to bottom are placed in the fixed cylinder, a limit group plug-inly matched with the limit slide groove is installed on the outer ring surface of the counterweight ring, a push unlocking group for unlocking the limit group is installed on the limit slide groove, the inner ring surfaces of the plurality of counterweight rings form a cone with a diameter gradually decreasing upward, a guide groove is provided on the side wall of the pulling cylinder, and a guide strip slidably connected to the guide groove up and down is installed on the inner ring surface of the counterweight ring; The push unlocking group cooperates with the limiting group on the lowest counterweight ring in the fixed cylinder each time, removes the lowest counterweight ring in the fixed cylinder, and then slides the counterweight ring downward and places it on the impact head.

5. The induction cooker parts performance tester according to claim 4, characterized in that: The counterweight locking group includes locking grooves provided on the inner ring surface of the counterweight ring. The locking grooves arranged from top to bottom are arranged alternately along the circumference of the pulling cylinder. The conical side wall of the pulling cylinder is provided with rectangular through grooves corresponding to the locking grooves one by one. A locking strip is slidably connected to the rectangular through groove. A reset spring four is installed between the locking strip and the inner wall of the pulling cylinder. The inner wall of the pulling cylinder is connected to a wedge block arranged along its circumference and sliding up and down through a fixed strip. The wedge block corresponds to the locking strip one by one, and a driving member for driving the wedge block to move up and down is installed on the impact head.

6. The induction cooker parts performance tester according to claim 4, characterized in that: The limiting group comprises a receiving groove formed on the outer ring surface of the counterweight ring, a blocking rod is installed in the receiving groove via a push spring, and the blocking rod is slidably matched with the limiting sliding groove.

7. The induction cooker parts performance tester according to claim 6, characterized in that: The push-to-unlock group includes two insertion rods connected to the outer wall of the fixed cylinder and arranged symmetrically along its circumference. The insertion rods are slidably inserted into the limiting slide groove. The insertion rods are located near the lower end of the limiting slide groove. The insertion rods and the outer wall of the fixed cylinder are connected in three phases through a reset spring.

8. The induction cooker parts performance tester according to claim 5, characterized in that: The driving member is composed of a sleeve fixedly installed at the bottom of the wedge block and a rotating rod installed in the sleeve. The rotating rod and the sleeve are connected by threaded cooperation. An installation groove corresponding to the rotating rod is opened at the bottom of the impact head, and the rotating rod passes through the installation groove.

9. The induction cooker parts performance tester according to claim 6, characterized in that: The inner ring surface of the fixed cylinder is provided with two inclined grooves symmetrically arranged along its circumference near the lower end. The inclined grooves are aligned with the limiting sliding grooves up and down, and the two inclined grooves are arranged in an eight-shaped shape.

10. The induction cooker parts performance tester according to claim 3, characterized in that: The rotary locking member is a rotating rod connected to the top of the pulling cylinder by threaded engagement, and the lower end of the rotating rod is connected to the screw rod in an up-and-down sliding manner.

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