An induction cooker part performance tester

Abstract

The present invention relates to the technical field of part performance testers, and specifically provides an induction cooker part performance tester. It includes: a triangular bracket, an impact test mechanism, a counterweight adding mechanism, an extended integrated locking group and a counterweight locking group. The induction cooker part performance tester designed by the present invention, through the cooperation of the extended integrated locking group, multiple locking groups, the counterweight adding mechanism and the counterweight locking group, realizes impacts with different contact areas under the same weight on the furnace surface and impacts with different gravities under the same contact area, comprehensively simulating the situation when the furnace surface of the induction cooker bears impacts from objects with the same contact surface but different weights and objects with the same weight but different contact surfaces during actual use, greatly improving the comprehensiveness and accuracy of the furnace surface impact detection, and thus being able to comprehensively evaluate the ability of the furnace surface to resist external object impacts.

Description

Technical Field

[0001] The present invention relates to the technical field of part performance testers, and specifically provides an induction cooker part 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 an electric current. When a conductive cookware (such as an iron pot or a stainless steel pot) is placed on the induction cooker panel, an eddy current will be induced at the bottom of the pot, thereby heating the cookware.

[0003] An induction cooker mainly consists of the following key components: a heating coil, a cooktop, an electric control system, a temperature control system, a cooker body, etc. The cooktop is usually made of a heat-resistant ceramic plate or other similar materials and directly contacts the cookware during use. It needs to have the ability to resist the impact of external objects to avoid damage caused by accidentally dropping heavy objects. Therefore, it is necessary to test the impact resistance strength of the induction cooker cooktop.

[0004] However, the current instruments for testing the impact resistance of the cooktop have a relatively single testing method during testing. They only impact the cooktop with a fixed contact surface and a fixed gravity, while in the actual use process, the cooktop of the induction cooker will be impacted by different contact surfaces and different gravities. The single testing method is difficult to comprehensively and accurately test the impact resistance strength result of the cooktop. Summary of the Invention

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

[0006] To achieve the above object, the embodiments of the present application provide the following technical solution: an induction cooker part performance tester, including: a triangular bracket, which is composed of a triangular plate and three support legs installed at its bottom. A shock testing mechanism is slidably connected up and down in the middle of the triangular plate. The shock testing mechanism includes a lifting cylinder slidably connected up and down in the middle of the triangular plate. The lower end of the lifting cylinder is in a conical shape with a gradually increasing diameter downward. An impact head is installed at the bottom of the lifting cylinder. The impact head is in a disc shape with a concave vertical cross-section. A plurality of surface-increasing rings are slidably sleeved on the side wall of the impact head coaxially and arranged in sequence from inside to outside.

[0007] Adjacent two surface-increasing rings, the impact head and its adjacent surface-increasing ring are all connected by a locking group. The impact head and the plurality of surface-increasing rings form a stepped shape arranged upward in sequence from inside to outside under the connection of their respective corresponding locking groups.

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

[0009] The weight adding mechanism includes a fixed cylinder installed at the bottom of the triangular plate. Two limiting chutes are symmetrically arranged along the circumferential direction on the inner wall of the fixed cylinder. A plurality of weight rings are evenly arranged from top to bottom in the fixed cylinder. A limiting group that is inserted and matched with the limiting chutes is installed on the outer ring surface of the weight ring. A pushing and unlocking group for unlocking the limiting group is installed on the limiting chutes. The inner ring surfaces of the plurality of weight rings form a cone with a gradually decreasing diameter upwards. A guiding groove is opened on the side wall of the lifting cylinder, and a guiding strip that is slidably connected up and down with the guiding groove is installed on the inner ring surface of the weight ring.

[0010] The pushing and unlocking group cooperates with the limiting group on the weight ring that is located at the bottommost in the fixed cylinder each time, removes the weight ring at the bottommost in the fixed cylinder, and then slides the weight ring downwards and places it on the impact head.

[0011] In a possible implementation manner, rib plates are evenly arranged along the circumferential direction of the fixed cylinder between the outer wall of the fixed cylinder and the bottom of the triangular plate.

[0012] In a possible implementation manner, the locking group includes receiving grooves that are evenly arranged along the circumferential direction on the inner ring surface of the surface increasing ring. Insertion and supporting rods are installed in the receiving grooves through the first return springs. Through slots corresponding to the receiving grooves are opened on both the surface increasing ring and the impact head. One end of the insertion and supporting rod away from the first return spring is arc-shaped. The insertion and supporting rod connected to the surface increasing ring is inserted into the through slot on the surface increasing ring or the impact head located on the inner ring surface of the surface increasing ring.

[0013] In a possible implementation manner, the expanding and integrated locking group includes a screw rod that is rotatably installed on the inner ring surface of the impact head and is concentric with it. A rotating locking member that penetrates the top of the lifting cylinder is installed at the top of the screw rod. A lifting disc is sleeved on the screw rod, and the lifting disc is connected to the screw rod in a threaded cooperation manner. An insertion and pushing rod is slidably connected in the through slot on the impact head. A swinging rod is hinged between the insertion and pushing rod and the lifting disc. Except for the impact head and the outermost surface increasing ring, sliding insertion strips are slidably installed on the through slots of the remaining surface increasing rings. A blocking groove that is slidably connected with the sliding insertion strip is also opened in the through slot. A second return spring is installed between the blocking groove and the sliding insertion strip.

[0014] In a possible implementation manner, the rotating locking member is a rotating rod that is connected to the top of the lifting cylinder in a threaded cooperation manner, and the lower end of the rotating rod is slidably connected up and down with the screw rod.

[0015] In a possible implementation manner, the limiting group includes a receiving groove opened on the outer ring surface of the weight ring. An insertion and blocking rod is installed in the receiving groove through a top pushing spring, and the insertion and blocking rod is slidably matched with the limiting chute.

[0016] In a possible implementation manner, the pushing and unlocking group includes two plugging and pressing rods symmetrically arranged along the circumferential direction of the outer wall of the fixed cylinder. The plugging and pressing rods are slidably inserted into the limiting sliding grooves. The plugging and pressing rods are located near the lower end of the limiting sliding grooves. A return spring three is connected between the plugging and pressing rods and the outer wall of the fixed cylinder.

[0017] In a possible implementation manner, the weight locking group includes locking grooves formed on the inner circumferential surface of the weight ring. The locking grooves arranged from top to bottom are staggered along the circumferential direction of the lifting cylinder. Rectangular through grooves corresponding to the locking grooves one by one are formed on the conical side wall of the lifting cylinder. A plugging lock bar is slidably connected to the rectangular through grooves. A return spring four is installed between the plugging lock bar and the inner wall of the lifting cylinder. The inner wall of the lifting cylinder is connected with wedge-shaped blocks arranged along the circumferential direction thereof and sliding up and down through fixing strips. The wedge-shaped blocks correspond to the plugging lock bars one by one. A driving member for driving the wedge-shaped blocks to move up and down is installed on the impact head.

[0018] In a possible implementation manner, the driving member is composed of a sleeve fixedly installed at the bottom of the wedge-shaped block and a rotating rod installed in the sleeve. The rotating rod is connected with the sleeve in a threaded cooperation manner. Installation grooves corresponding to the rotating rods one by one are formed at the bottom of the impact head. The rotating rods penetrate through the installation grooves.

[0019] In a possible implementation manner, two inclined grooves symmetrically arranged along the circumferential direction are formed at the inner circumferential surface of the fixed cylinder near the lower end. The inclined grooves are vertically aligned with the limiting sliding grooves. The two inclined grooves are arranged in a shape of an inverted V.

[0020] One or more of the above technical solutions in the embodiments of the present invention have at least the following beneficial effects: 1. An electromagnetic cooker part performance tester designed by the present invention realizes impacts with different contact areas under the same weight and different gravities under the same contact area on the stove surface through the cooperation of an extended integrated locking group, a plurality of locking groups, a weight adding mechanism, and a weight locking group, comprehensively simulating the situations when the stove surface of the electromagnetic cooker bears impacts of objects with the same contact surface but different weights and objects with the same weight but different contact surfaces during actual use, greatly improving the comprehensiveness and accuracy of the stove surface impact detection, and further being able to comprehensively evaluate the ability of the stove surface to resist impacts from external objects.

[0021] 2. The present invention cooperates the extended integrated locking group with a plurality of locking groups arranged in sequence from inside to outside, sequentially moves the surface increasing ring downward, 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 stove surface, and integrally locks the adjusted impact head and a plurality of surface increasing rings, avoiding the upper and lower staggering of the surface increasing ring and the impact head during testing and affecting the accuracy of the test, and at the same time greatly improving the convenience of adjusting the impact contact surface of the impact test mechanism.

[0022] 3. In the present invention, the pushing and unlocking group cooperates with the limiting group on the counterweight ring that is located at the bottommost position in the fixed cylinder each time, removes the counterweight ring at the bottommost position in the fixed cylinder, then slides the counterweight ring downward and places it on the impact head, and then locks the counterweight ring on the impact head through the counterweight locking group, further improving 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 technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

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

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

[0026] Figure 3 is the three-dimensional structure schematic diagram of the counterweight adding mechanism and the impact test mechanism of the present invention.

[0027] Figure 4 is the sectional three-dimensional structure schematic diagram of the counterweight adding mechanism and the impact test mechanism of the present invention.

[0028] Figure 5 is the present invention Figure 4 The enlarged view of part A in.

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

[0030] Figure 7 is the partial structure schematic diagram of the locking group and the extended integrated locking group of the present invention.

[0031] Reference numerals: 1, triangular support; 10, triangular plate; 11, support leg; 2, impact test mechanism; 20, lifting cylinder; 21, impact head; 22, surface-increasing ring; 23, locking group; 230, storage groove; 231, first return spring; 232, inserting and supporting rod; 233, through slot; 3, weight adding mechanism; 30, fixed cylinder; 301, inclined slot; 302, rib plate; 31, limiting sliding groove; 32, weight ring; 33, limiting group; 330, inserting and blocking rod; 331, pushing spring; 34, pushing and unlocking group; 340, inserting and pressing rod; 341, third return spring; 35, guiding groove; 36, guiding strip; 24, extended integrated locking group; 240, screw rod; 241, rotating locking member; 242, lifting disc; 243, inserting and pushing rod; 244, swinging rod; 245, sliding inserting strip; 246, second return spring; 25, weight locking group; 250, locking groove; 251, rectangular through slot; 252, inserting lock strip; 253, fourth return spring; 254, wedge block; 260, rotating rod; 261, sleeve; 262, mounting groove; 4, induction cooker; 5, cooktop surface. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] In order to enable those in the technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Refer to Figure 1 , an induction cooker part performance tester, comprising: a triangular support 1, the triangular support 1 is composed of a triangular plate 10 and three support legs 11 installed at its bottom, a middle part of the triangular plate 10 is slidably connected up and down with an impact test mechanism 2, the impact test mechanism 2 includes a lifting cylinder 20 slidably connected up and down in the middle part of the triangular plate 10, a lower end of the lifting cylinder 20 is in a conical shape with a gradually increasing diameter downward, an impact head 21 is installed at the bottom of the lifting cylinder 20, the impact head 21 is in a disc shape with a concave vertical cross section, and a plurality of surface-increasing rings 22 coaxially arranged from inside to outside and sleeved on the side wall of the impact head 21 are slidably connected up and down.

[0035] Refer to Figure 1 And Figure 4 , adjacent two surface-increasing rings 22, and between the impact head 21 and its adjacent surface-increasing ring 22 are all connected by a locking group 23, and the impact head 21 and the plurality of surface-increasing rings 22 form a stepped shape arranged upward in sequence from inside to outside under the connection of their respective corresponding locking groups 23.

[0036] Refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 A weight adding mechanism 3 is slidably sleeved on the outer wall of the lifting cylinder 20 at the bottom of the triangular plate 10; An expansion integrated locking group 24 and a weight locking group 25 are jointly installed on the lifting cylinder 20 and the impact head 21.

[0037] In the initial state, the impact weight applied by the impact test mechanism 2 to the furnace surface 5 is the sum of the impact head 21 and multiple surface increasing rings 22. By manually pulling the lifting cylinder 20 to drive the impact head 21 and multiple surface increasing rings 22 to move upward, and then directly releasing the lifting cylinder 20, the lifting cylinder 20 drives the impact head 21 and multiple surface increasing rings 22 to quickly move downward, so as to conduct an impact test on the furnace surface 5.

[0038] After that, through the cooperation of the expansion integrated locking group 24 and multiple locking groups 23 arranged in sequence from inside to outside, the surface increasing rings 22 are moved downward in sequence, so that the bottom of the surface increasing rings 22 is flush with the bottom of the impact head 21, adjusting the impact contact surface of the impact test mechanism 2 on the furnace surface 5, and integrally locking the adjusted impact head 21 and multiple surface increasing rings 22 to improve the connection stability between the impact head 21 and the surface increasing rings 22. Then, conduct an impact test on the furnace surface 5 again, so as to conduct an impact test with different contact areas under the same weight.

[0039] Refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 6 The weight adding mechanism 3 includes a fixed cylinder 30 installed at the bottom of the triangular plate 10. Two limiting chutes 31 are symmetrically arranged along the circumferential direction of the inner wall of the fixed cylinder 30. A plurality of weight rings 32 are evenly arranged from top to bottom in the fixed cylinder 30. A limiting group 33 inserted and matched with the limiting chute 31 is installed on the outer ring surface of the weight ring 32. A pushing and unlocking group 34 for unlocking the limiting group 33 is installed on the limiting chute 31. The inner ring surfaces of the plurality of weight rings 32 form a cone with a gradually decreasing diameter upward. A guiding groove 35 is opened on the side wall of the lifting cylinder 20. A guiding bar 36 slidably connected with the guiding groove 35 up and down is installed on the inner ring surface of the weight ring 32.

[0040] The pushing and unlocking group 34 cooperates with the limiting group 33 on the weight ring 32 located at the bottom in the fixed cylinder 30 each time to remove the weight ring 32 located at the bottom in the fixed cylinder 30, and then slide the weight ring 32 downward and place it on the impact head 21. The weight ring 32 is locked on the impact head 21 through the weight locking group 25. At this time, the contact surface between the impact test mechanism 2 and the furnace surface 5 is not adjusted, so as to realize the impact test of the furnace surface 5 with different gravity under the same contact surface.

[0041] By cooperating with the expanded integrated locking group 24, multiple locking groups 23, the weight adding mechanism 3 and the weight locking group 25, the impacts on the furnace surface 5 with different contact areas under the same weight and different weights under the same contact area are realized, comprehensively simulating the situation when the furnace surface 5 bears accidental impacts of objects with the same contact surface but different weights and objects with the same weight but different contact surfaces during actual use, greatly improving the comprehensiveness and accuracy of the impact detection of the furnace surface 5.

[0042] Refer to Figure 2 , between the outer wall of the fixed cylinder 30 and the bottom of the triangular plate 10, rib plates 302 are installed which are evenly arranged along the circumferential direction of the fixed cylinder 30, and the rib plates 302 are used to increase the installation stability of the fixed cylinder 30.

[0043] Refer to Figure 4 , Figure 6 and Figure 7 , the locking group 23 includes receiving grooves 230 which are evenly arranged along the circumferential direction on the inner ring surface of the surface increasing ring 22. In the receiving grooves 230, inserting support rods 232 are installed through the first return springs 231. Through slots 233 are opened on both the surface increasing ring 22 and the impact head 21 above the corresponding receiving grooves 230. One end of the inserting support rod 232 away from the first return spring 231 is arc-shaped, and the inserting support rod 232 connected to the surface increasing ring 22 is inserted 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 inserting support rod 232 connected to the surface increasing ring 22 is inserted 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 form a stepped shape arranged upward in sequence from the inside to the outside under the connection of their respective corresponding locking groups 23, so that the weights of multiple surface increasing rings 22 act on the impact head 21, and at the same time, the contact surface between the impact testing mechanism 2 and the furnace surface 5 remains unchanged.

[0045] Refer to Figure 4 , Figure 5 , Figure 6 and Figure 7, the extended integrated locking group 24 includes a screw rod 240 that is rotatably installed on the inner ring surface of the impact head 21 and is concentric with it. A rotary locking member 241 that penetrates the top of the lifting cylinder 20 is installed at the top of the screw rod 240. A lifting disc 242 is sleeved on the screw rod 240, and the lifting disc 242 is connected to the screw rod 240 by means of a threaded fit. A plug push rod 243 is slidably connected in the through slot 233 on the impact head 21. A swing rod 244 is hinged between the plug push rod 243 and the lifting disc 242. Except for the impact head 21 and the outermost surface-increasing ring 22, sliding inserts 245 are slidably installed on the through slots 233 of the remaining surface-increasing rings 22. A retaining groove that is slidably connected to the sliding insert 245 is also formed in the through slot 233. A second return spring 246 is installed between the retaining groove and the sliding insert 245.

[0046] When it is necessary to adjust the contact surface between the impact testing mechanism 2 and the furnace surface 5, the rotary locking member 241 is rotated to drive the screw rod 240 to rotate. During the rotation of the screw rod 240, the lifting disc 242 is driven to move downward through its threaded fit with the screw rod 240. The lifting disc 242 pushes the plug push rod 243 to move through the swing rod 244. The plug push rod 243 pushes the plug bearing rod 232 in the through slot 233 on the surface-increasing ring 22 to squeeze the first return spring 231 to contract. When the corresponding plug bearing rod 232 is disengaged from the corresponding through slot 233, the surface-increasing ring 22 moves downward until its bottom is flush with the bottom of the impact head 21, expanding the contact area between the impact testing mechanism 2 and the furnace surface 5. At this time, the screw rod 240 continues to rotate and drives the lifting disc 242 to move downward. The plug push rod 243 enters the through slot 233 on the adjacent surface-increasing ring 22, thereby locking the impact head 21 and the surface-increasing ring 22 after downward movement, preventing the surface-increasing ring 22 and the impact head 21 from being staggered up and down during the impact test and affecting the contact effect between the impact testing mechanism 2 and the furnace surface 5.

[0047] When it is necessary to increase the contact area of another surface-increasing ring 22 again, the rotary locking member 241 is rotated again, so that the screw rod 240 drives the lifting disc 242 to continue to move downward. The plug push rod 243 pushes the adjacent sliding insert 245. At this time, the second return spring 246 contracts, and the sliding insert 245 pushes the connected plug bearing rod 232 to move, also causing the plug bearing rod 232 to be disengaged 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, expanding the contact area between the impact testing mechanism 2 and the furnace surface 5 again. The screw rod 240 continues to rotate and drives the lifting disc 242 to move downward. The plug push rod 243 pushes the adjacent sliding insert 245 into the through slot 233 on the next surface-increasing ring 22, thereby integrally locking the impact head 21 and the two surface-increasing rings 22 after downward movement, greatly improving the locking convenience after the adjustment of the surface-increasing ring 22.

[0048] When it is necessary to reduce the contact surface between the impact testing mechanism 2 and the furnace surface 5, the lifting disc 242 moves upward and pulls the insertion push rod 243 through the swing rod 244 to move towards the inner ring surface of the impact head 21, so that the plurality of sliding inserts 245 and the insertion push rod 243 are disengaged from the corresponding through slots 233 in sequence, and then the surface-increasing ring 22 is pushed upward. When the insertion bearing rod 232 is aligned with the matching through slot 233, the insertion bearing rod 232 is inserted into the corresponding through slot 233 under the elastic force of the first reset spring 231, thereby realizing the locking between adjacent surface-increasing rings 22, the surface-increasing ring 22 and the impact head 21.

[0049] Refer to Figure 4 and Figure 5 , the rotary locking member 241 is a rotating rod connected to the top of the lifting cylinder 20 in a threaded fit manner. The lower end of the rotating rod is slidably connected to the screw rod 240 up and down. During the rotation of the rotating rod, the screw rod 240 is driven to rotate, so that the screw rod 240 drives the lifting disc 242 to move up and down through a threaded fit manner. At the same time, through the threaded fit between the rotating rod and the lifting cylinder 20, locking is performed when the screw rod 240 stops rotating.

[0050] Refer to Figure 6 , the limiting group 33 includes a receiving groove formed on the outer ring surface of the weight ring 32. An insertion blocking rod 330 is installed in the receiving groove through a top push spring 331, and the insertion blocking rod 330 is slidably engaged with the limiting chute 31.

[0051] Refer to Figure 6 , the pushing and unlocking group 34 includes two insertion pressing rods 340 symmetrically arranged along the circumferential direction of the outer wall of the fixed cylinder 30. The insertion pressing rods 340 are slidably inserted into the limiting chute 31. The insertion pressing rods 340 are located near the lower end of the limiting chute 31, and the insertion pressing rods 340 are connected to the outer wall of the fixed cylinder 30 through a third reset spring 341.

[0052] At the same time, the two insertion pressing rods 340 are squeezed to move towards the fixed cylinder 30. The insertion pressing rods 340 squeeze the insertion blocking rods 330 on the weight ring 32 located at the lowermost side of the limiting chute 31 at this time. The insertion blocking rods 330 move towards the receiving groove and squeeze the top push spring 331 to contract until both insertion blocking rods 330 are disengaged from the limiting chute 31. At this time, the lowermost weight ring 32 falls downward under its own gravity and disengages from the fixed cylinder 30. After manually receiving the weight ring 32 from below, the weight ring 32 is placed on the impact head 21, and the weight ring 32 is locked above the impact head 21 through the weight locking group 25, thereby increasing the impact force under the same contact surface.

[0053] Refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, the counterweight locking group 25 includes a locking groove 250 formed on the inner ring surface of the counterweight ring 32. The locking grooves 250 arranged from top to bottom are staggered along the circumferential direction of the lifting cylinder 20. A rectangular through groove 251 corresponding to the locking groove 250 one by one is formed on the tapered side wall of the lifting cylinder 20. A latch bar 252 is slidably connected to the rectangular through groove 251. A fourth return spring 253 is installed between the latch bar 252 and the inner wall of the lifting cylinder 20. The inner wall of the lifting cylinder 20 is connected by a fixing bar with a wedge block 254 arranged along its circumferential direction and sliding up and down. The wedge blocks 254 correspond to the latch bars 252 one by one. A driving member for driving the wedge block 254 to move up and down is installed on the impact head 21.

[0054] Refer to 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 means of thread fit. Installation grooves 262 corresponding to the rotating rod 260 one by one are formed at the bottom of the impact head 21. The rotating rod 260 penetrates through the installation groove 262.

[0055] After the counterweight ring 32 is placed on the impact head 21, rotate the corresponding rotating rod 260. The rotating rod 260 drives the sleeve 261 and the wedge block 254 to move upward through the thread fit with the sleeve 261. The wedge block 254 moves upward along the fixing bar. During the upward movement of the wedge block 254, it pushes the corresponding latch bar 252 to move. The latch bar 252 is inserted into the locking groove 250 on the counterweight ring 32, so as to limit the up and down movement of the counterweight ring 32 and realize the locking of the counterweight ring 32.

[0056] Refer to Figure 2 and Figure 6 , two inclined grooves 301 symmetrically arranged along the circumferential direction are formed at the inner ring surface of the fixed cylinder 30 near the lower end. The inclined grooves 301 are vertically aligned with the limit sliding groove 31. The two inclined grooves 301 are arranged in a shape of an eight. 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 and the lifting cylinder 20, and then pushes the counterweight ring 32 to move upward. When the blocking rod 330 contacts the inclined groove 301 and moves upward, the blocking rod 330 moves into the receiving groove under the blocking action of the inclined groove 301. When the blocking rod 330 is aligned with the limit sliding groove 31, the blocking rod 330 enters the limit sliding groove 31 under the elastic force of the top push spring 331, so as to connect and lock the counterweight ring 32 and the fixed cylinder 30.

[0057] Refer to Figures 1 - 7, During specific operation, place the tester on the induction cooker 4 such that the cooking surface 5 is directly below the impact testing mechanism 2, and then start the impact test on the cooking surface 5 of the induction cooker 4. In the initial state, the impact weight applied by the impact testing mechanism 2 to the cooking surface 5 is the combined weight of the impact head 21 and multiple area-increasing rings 22. Manually pull the lifting cylinder 20 to drive the impact head 21 and multiple area-increasing rings 22 to move upward, and then directly release the lifting cylinder 20, causing the lifting cylinder 20 to drive the impact head 21 and multiple area-increasing rings 22 to move downward rapidly, thereby conducting an impact test on the cooking surface 5.

[0058] Afterward, through the cooperation of the expansion integrated locking group 24 and multiple locking groups 23 arranged successively from the inside out, the area-increasing rings 22 are successively moved downward, making the bottom of the area-increasing rings 22 flush with the bottom of the impact head 21, adjusting the impact contact surface between the impact testing mechanism 2 and the cooking surface 5, and integrally locking the impact head 21 and multiple area-increasing rings 22 after adjustment. Then, conduct an impact test on the cooking surface 5 again, thereby conducting 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-unlock group 34 cooperates with the limit group 33 on the corresponding counterweight ring 32, remove the lowermost counterweight ring 32 inside the fixed cylinder 30, and then slide the counterweight ring 32 downward and place it on the impact head 21. Lock the counterweight ring 32 on the impact head 21 through the counterweight locking group 25. At this time, do not adjust the impact contact surface between the impact testing mechanism 2 and the cooking surface 5 to conduct impact tests with different gravities under the same contact surface.

[0060] It should be noted that the test results are obtained by observing whether the cooking surface 5 is cracked.

[0061] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0062] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, 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 manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within 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 is matched with a plurality of locking groups arranged sequentially from the inside to the outside, so as to adjust the impact contact surface of the impact test mechanism on the furnace surface and to integrally lock the impact head and the plurality of surface-enhancing rings after adjustment; The locking assembly comprises a receiving groove evenly arranged along the circumference of the inner ring surface of the face-enhancing ring, a plug-in rod is installed in the receiving groove through a reset spring 1, 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 1 is arc-shaped, and the plug-in rod connected to the face-enhancing ring is plugged into the through slot located on the inner ring surface of the face-enhancing ring; 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.

2. 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.

3. The induction cooker parts performance tester according to claim 2, 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.

4. The induction cooker parts performance tester according to claim 2, 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.

5. The induction cooker parts performance tester according to claim 2, 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.

6. The induction cooker parts performance tester according to claim 3, 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.

7. The induction cooker parts performance tester according to claim 4, 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.

8. The induction cooker parts performance tester according to claim 1, 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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