Refrigerator door cabinet opening and closing test machine
By designing a refrigerator door opening and closing test machine, the opening, closing and pulling of the refrigerator door are automatically controlled, solving the problem of human factors affecting traditional testing methods and achieving efficient and reliable test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI HAOPING TECH CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional refrigerator door and cabinet testing methods require multiple inspectors to work in shifts, which leads to human factors affecting the scientific validity and authority of the test results, and makes it difficult to meet the durability testing requirements of ISO and UL standards.
Design a refrigerator door opening and closing test machine, including a base, a test machine frame, a refrigerator positioning and limiting module, a refrigerator door opening and closing module, and a refrigerator door pull-out module. The machine achieves automated testing by automatically controlling the opening, closing, and pulling out of the refrigerator door.
Automated testing reduces labor costs, improves the reliability and consistency of testing, and can meet the testing requirements of ISO and UL standards.
Smart Images
Figure CN224317282U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of household appliance detection, especially to the field of life detection technology for the opening and closing structure of refrigerator door cabinets, and specifically to a refrigerator door cabinet opening and closing testing machine. Background Art
[0002] In recent years, the cold chain industry in China has developed rapidly. As an important part of cold chain equipment, the production scale and technical standards of refrigerator door cabinets have been continuously improved. With the expansion of market demand, the detection business volume of refrigerator door cabinets has increased significantly, and the test of the opening and closing performance of door cabinets has become a key quality inspection link.
[0003] Due to the requirements of the ISO 15502:2005 and IEC 62552 detection processes for continuous 24-hour durability tests and the 100,000-cycle opening and closing life test in the UL 471 standard, traditional detection methods require multiple inspectors to operate in shifts. This not only greatly increases the labor cost of enterprises, but also has technical pain points such as fluctuations in the opening duration of the door cabinet, irregular closing intervals, and excessive deviation of the opening angle during the operation process. These human factors lead to a high dispersion of test data for the sealing performance of the door cabinet, directly affecting the stability assessment of the product's heat preservation efficiency, challenging the scientificity and authority of the test results, and bringing potential technical certification risks to quality inspection institutions.
[0004] There is a refrigerator with double doors at the top and drawer cabinets arranged side by side at the bottom at intervals. During detection, the opening and closing angle of the double doors at the top is 0 - 85°, and the drawer pull test requires pulling out 90% of the entire cabinet body. For this, a testing machine needs to be designed specifically. Summary of the Invention
[0005] In view of the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a refrigerator door cabinet opening and closing testing machine to solve the difficulties of the prior art.
[0006] To achieve the above purpose and other related purposes, the utility model provides a refrigerator door cabinet opening and closing testing machine, including:
[0007] Base 1;
[0008] Testing machine frame 2, the testing machine frame 2 is welded to the top of the base 1 with one side open, and the center of the testing machine frame 2 is a refrigerator placement room 21;
[0009] Refrigerator positioning and limiting module 3, the top of the refrigerator positioning and limiting module 3 is connected to the left and right sides of the testing machine frame 2 by bolts, and the bottom of the refrigerator positioning and limiting module 3 is arranged in the center of the base 1;
[0010] The refrigerator door opening and closing module 4 is provided in two sets, and the two sets of refrigerator door opening and closing modules 4 are arranged side by side on the left and right sides of the test machine frame 2.
[0011] The refrigerator door pull-out module 5 is located below the refrigerator door opening and closing module 4. There are two sets of refrigerator door pull-out modules 5, which are arranged vertically and symmetrically on the left and right sides of the test machine frame 2.
[0012] According to the preferred embodiment, the refrigerator positioning and limiting module 3 includes:
[0013] Mounting plate 31 is installed on the left and right sides of the top of the testing machine frame 2 by bolt connection. Mounting plate 31 has a square hole 32 in the center.
[0014] Two clamping mounting blocks 33 are provided, which are symmetrically arranged on the front and rear sides of the first mounting plate 31. The clamping mounting blocks 33 are located in the center of the mounting square hole 32. The two clamping mounting blocks 33 are connected to each other by bolts and clamped and fixed on the clamping mounting block 33. A first threaded hole is provided in the center of the clamping mounting block 33.
[0015] A first hand-cranked screw 34 is inserted into a first threaded hole. The screw of the first hand-cranked screw 34 extends straight through the first threaded hole toward the center of the refrigerator placement chamber 21. A first pressure plate 35 is fitted onto the bottom of the screw of the first hand-cranked screw 34 through a threaded fit.
[0016] Waist holes 36 are symmetrically opened at the top center of the base 1;
[0017] L-shaped positioning plate 37, the L-shaped positioning plate 37 is placed at the top center of the base 1, and the bolts on the left and right sides of the bottom of the L-shaped positioning plate 37 are locked in the waist hole 36;
[0018] L-shaped mounting plate 38, the L-shaped mounting plate 38 is bolted to the left and right sides of the top of the base 1, the L-shaped mounting plate 38 has a second threaded hole in the center, and the left and right sides of the second threaded hole are balance through holes;
[0019] The second hand-cranked screw 39 is inserted into the second threaded hole. The screw in the second hand-cranked screw 39 extends through the second threaded hole toward the L-shaped mounting plate 38. The bottom of the screw in the first hand-cranked screw 34 is fitted with a pressure plate 310 through a threaded fit.
[0020] The positioning rod 311 has one side inserted into the balance through hole, and the other side of the positioning rod 311 is connected to the pressure plate 310 by welding.
[0021] According to the preferred embodiment, the width of the clamping mounting block 33 is greater than the width of the mounting square hole 32.
[0022] According to the preferred embodiment, the refrigerator door opening and closing module 4 includes:
[0023] Mounting plate 41 is symmetrically opened on the left and right sides of the testing machine frame 2 by bolt connection. Mounting plate 41 is located directly below mounting plate 31. The front and rear ends of mounting plate 41 near the opening of the testing machine frame 2 are provided with rotating shaft brackets, and rotating shaft 42 is clamped in the center of the rotating shaft brackets.
[0024] A swing cylinder 43 is bolted to the center of the second mounting plate 41. The top of the swing cylinder 43 extends toward the opening side of the testing machine frame 2. A push plate 44 is bolted to the top of the swing cylinder 43. The bottom of the push plate 44 is welded to the rotating shaft 42.
[0025] The refrigerator door drive arm 45 is located on the opening side of the test machine frame 2. One side of the refrigerator door drive arm 45 is connected to the rotating shaft 42 by welding. The refrigerator door drive arm 45 is C-shaped. A cylindrical track 46 is welded to the side of the refrigerator door drive arm 45 near the L-shaped positioning plate 37.
[0026] The handle block 47 is fitted on the cylindrical track 46 at its bottom and has a C-shaped top. The handle block 47 has three threaded holes on the left and right sides of its top and a locking rod 48 is provided in the three threaded holes.
[0027] The connecting plate roller assembly 49 is located on the side of the handle block 47 near the swing cylinder 43. The bottom of the connecting plate roller assembly 49 is sleeved on the cylindrical track 46, and the top roller of the connecting plate roller assembly 49 extends laterally toward the L-shaped positioning plate 37.
[0028] According to the preferred embodiment, the refrigerator door pull-out module 5 includes:
[0029] Mounting plate 51 No. 3 is symmetrically opened on the left and right sides of the testing machine frame 2 by bolt connection, and is located directly below mounting plate 41 No. 2.
[0030] A double-rod cylinder 52 is bolted to one side of the No. 3 mounting plate 51, and the top cylinder rod of the double-rod cylinder 52 extends toward the opening side of the testing machine frame 2.
[0031] The freezer handle 53 is L-shaped, and the bottom of the freezer handle 53 is connected to the cylinder rod of the double-rod cylinder 52 by bolts.
[0032] According to the preferred embodiment, the freezer handle 53 has a hollow structure, which reduces the pressure load on the cylinder rod of the double-rod cylinder 52 and prevents abnormalities from occurring during the 24-hour test.
[0033] According to the preferred embodiment, the second mounting plate 41 and the third mounting plate 51 are provided with weight reduction holes 6.
[0034] According to the preferred design, the weight reduction hole 6 reduces the overall material usage and weight of the fuselage.
[0035] This utility model employs a base, a testing machine frame, a refrigerator positioning and limiting module, a refrigerator door opening and closing module, and a refrigerator cabinet door pull-out module. It is transported to the refrigerator placement chamber by a forklift. The refrigerator door drive arm in the refrigerator door opening and closing module is controlled to open and close, and the refrigerator position is finely adjusted. The double doors on the top of the refrigerator under test are pressed against the rollers in the connecting plate roller assembly. The double door handles on the top of the refrigerator under test are then locked in the handle block and limited by the locking rod. The L-shaped positioning plate is controlled to move along the waist hole until it presses against the back side wall of the refrigerator. The L-shaped positioning plate is limited by bolts. The freezer handle and the refrigerator cabinet door handle are connected by self-tapping screws. Rotating the first and second hand-cranked screws fixes the first pressure plate and pressure plate around the refrigerator. The swing cylinder and double-rod cylinder are then activated to perform life testing. Automated testing saves labor costs and improves the reliability of the test.
[0036] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description
[0037] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;
[0038] Figure 2 The diagram shown is an enlarged three-dimensional structural schematic of the refrigerator positioning and limiting module in this utility model.
[0039] Figure 3 The diagram shown is an enlarged three-dimensional structural schematic of the refrigerator door opening and closing module in this utility model.
[0040] Figure 4 The diagram shown is an enlarged three-dimensional structural diagram of the other side of the refrigerator door opening and closing module in this utility model.
[0041] Figure 5 The diagram shown is an enlarged schematic of the weight-reducing hole structure in this utility model.
[0042] Figure 6The diagram shown is an enlarged three-dimensional structural schematic of the refrigerator door pull-out module in this utility model.
[0043] Figure 7 The diagram shown is an enlarged three-dimensional structural diagram of the top mounting of the base in this utility model;
[0044] Label Explanation
[0045] 1. Base;
[0046] 2. Testing machine frame; 21. Refrigerator storage compartment;
[0047] 3. Refrigerator positioning and limiting module; 31. Mounting plate No. 1; 32. Mounting square hole; 33. Pressing mounting block; 34. Hand crank screw No. 1; 35. Pressure plate No. 1; 36. Waist hole; 37. L-shaped positioning plate; 38. L-shaped mounting plate; 39. Hand crank screw No. 2; 310. Pressure plate; 311. Positioning rod;
[0048] 4. Refrigerator door opening and closing module; 41. Mounting plate No. 2; 42. Rotary shaft; 43. Swing cylinder; 44. Push plate; 45. Refrigerator door drive arm; 46. Cylindrical track; 47. Handle latch; 48. Lever; 49. Connecting plate roller assembly;
[0049] 5. Refrigerator door pull-out module; 51. Mounting plate No. 3; 52. Double-rod cylinder; 53. Freezer handle;
[0050] 6. Weight reduction hole; Detailed Implementation
[0051] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0052] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.
[0053] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.
[0054] This utility model proposes a refrigerator door cabinet opening and closing test machine for use in the refrigerator door cabinet testing process. However, the structure of the base 1, test machine frame 2, refrigerator positioning and limiting module 3, refrigerator door opening and closing module 4, and refrigerator cabinet door pull-out module 5 is particularly suitable for the lifespan of the refrigerator door cabinet opening and closing structure.
[0055] In general, the refrigerator door opening and closing testing machine proposed in this utility model mainly includes: a base 1, a testing machine frame 2, a refrigerator positioning and limiting module 3, a refrigerator door opening and closing module 4, and a refrigerator door pull-out module 5. (See also...) Figure 1 It shows the arrangement of the base 1, the test machine frame 2, the refrigerator positioning and limiting module 3, the refrigerator door opening and closing module 4, and the refrigerator cabinet door pull-out module 5.
[0056] When using the refrigerator door opening and closing testing machine proposed in this utility model, the refrigerator door drive arm 45 in the refrigerator door opening and closing module 4 is opened, and the freezer handle 53 in the refrigerator door pull-out module 5 is opened. The refrigerator to be tested is moved to the refrigerator placement chamber 21 by a forklift. The refrigerator door drive arm 45 in the refrigerator door opening and closing module 4 is opened and closed. The position of the refrigerator is finely adjusted. The double doors on the top of the refrigerator to be tested are pressed against the rollers in the connecting plate roller assembly 49. The double door handles on the top of the refrigerator to be tested are locked in the handle locking block 47 and secured by the locking rod 4. 8. Limit the movement of the L-shaped positioning plate 37 along the waist hole 36 until it abuts against the back side wall of the refrigerator. Limit the L-shaped positioning plate 37 with bolts. Connect the freezer handle 53 and the refrigerator door handle with self-tapping screws. Crank the first hand crank screw 34 and the second hand crank screw 39 to fix the first pressure plate 35 and the pressure plate 310 around the refrigerator. Start the swing cylinder 43 and the double rod cylinder 52 to perform life detection. Automated detection saves labor costs and improves the reliability of detection.
[0057] The aforementioned test machine frame 2 is welded to an opening on one side of the top of the base 1, and the refrigerator placement chamber 21 is located in the center of the test machine frame 2.
[0058] The refrigerator positioning and limiting module 3 is bolted to the top of the left and right sides of the testing machine frame 2, and the bottom of the refrigerator positioning and limiting module 3 is located in the center of the base 1. The refrigerator positioning and limiting module 3 includes: a first mounting plate 31, a clamping mounting block 33, a first hand-cranked screw 34, an L-shaped positioning plate 37, a second hand-cranked screw 39, an L-shaped mounting plate 38, and a positioning rod 311. The first mounting plate 31 is bolted to the left and right sides of the top of the testing machine frame 2, and a square mounting hole 32 is opened in the center of the first mounting plate 31. Two clamping mounting blocks 33 are provided, symmetrically arranged on the front and rear sides of the first mounting plate 31. The clamping mounting blocks 33 are located in the center of the mounting square hole 32. The two clamping mounting blocks 33 are connected and clamped to each other by bolts. A first threaded hole is provided in the center of the clamping mounting block 33. A first hand-cranked screw 34 is inserted into the first threaded hole. The screw of the first hand-cranked screw 34 extends straight towards the center of the refrigerator placement compartment 21 through the first threaded hole. The bottom of the first hand-cranked screw 34 is threaded. A pressure plate 35 is fitted in conjunction with the base 1. Symmetrical waist holes 36 are formed at the center of the top of the base 1. An L-shaped positioning plate 37 is placed at the center of the top of the base 1. Bolts on the left and right sides of the bottom of the L-shaped positioning plate 37 are engaged in the waist holes 36. L-shaped mounting plates 38 are bolted to the left and right sides of the top of the base 1. A second threaded hole is formed in the center of the L-shaped mounting plate 38. Balance through holes are located on the left and right sides of the second threaded hole. A second hand-cranked screw 39 passes through the second threaded hole, with the screw protruding from the second threaded hole towards the L-shaped mounting plate 38. Furthermore, the bottom of the first hand-cranked screw 34 is fitted with a pressure plate 310 through a threaded connection. One side of the positioning rod 311 passes through the balance through hole, and the other side of the positioning rod 311 is connected to the pressure plate 310 by welding. It should also be noted that the width of the clamping mounting block 33 is greater than the width of the mounting square hole 32. The refrigerator positioning and limiting module 3 ensures that the clamping mounting block 33 has a clamping force point when installed, realizing the positioning and limiting of the refrigerator under test during testing, preventing the refrigerator from shifting due to vibration caused by the opening and closing of the robotic arm during testing, which could damage the refrigerator door.
[0059] The aforementioned refrigerator door opening and closing module 4 is provided in two sets, arranged side by side on the left and right sides of the testing machine frame 2. Each refrigerator door opening and closing module 4 includes: a second mounting plate 41, a swing cylinder 43, a refrigerator door drive arm 45, a handle latch 47, and a connecting plate roller assembly 49. The second mounting plate 41 is symmetrically located on the left and right sides of the testing machine frame 2 via bolts, and is positioned directly below the first mounting plate 31. Rotary shaft brackets are located at the front and rear ends of the second mounting plate 41 near the opening side of the testing machine frame 2, with a rotating shaft 42 clamped in the center of each bracket. The bottom of the swing cylinder 43 is bolted to the center of the second mounting plate 41, and the top of the swing cylinder 43 extends towards the opening side of the testing machine frame 2. A connecting plate roller assembly 49 is bolted to the top of the swing cylinder 43. Push plate 44, the bottom of push plate 44 is connected to rotating shaft 42 by welding. Refrigerator door drive arm 45 is set on the opening side of frame 2 of the testing machine. One side of refrigerator door drive arm 45 is connected to rotating shaft 42 by welding. Refrigerator door drive arm 45 is C-shaped. A cylindrical track 46 is welded on the side of refrigerator door drive arm 45 near L-shaped positioning plate 37. The bottom of handle block 47 is fitted on cylindrical track 46. The top of handle block 47 is C-shaped. No. 3 threaded holes are opened on the left and right sides of the top of handle block 47. A locking rod 48 is set in the No. 3 threaded hole. Connecting plate roller assembly 49 is set on the side of handle block 47 near swing cylinder 43. The bottom of connecting plate roller assembly 49 is fitted on cylindrical track 46. The top roller side of connecting plate roller assembly 49 extends towards L-shaped positioning plate 37.
[0060] The aforementioned refrigerator door pull-out module 5 is located below the refrigerator door opening and closing module 4. There are two sets of refrigerator door pull-out modules 5, which are arranged vertically and symmetrically on the left and right sides of the test machine frame 2. The refrigerator door pull-out module 5 includes: a third mounting plate 51, a double-rod cylinder 52, and a freezer handle 53. The third mounting plate 51 is symmetrically opened on the left and right sides of the test machine frame 2 by bolts. The third mounting plate 51 is located directly below the second mounting plate 41. The double-rod cylinder 52 is bolted to one side of the third mounting plate 51. The top cylinder rod of the double-rod cylinder 52 extends towards the opening side of the test machine frame 2. The freezer handle 53 is L-shaped, and the bottom of the freezer handle 53 is connected to the cylinder rod of the double-rod cylinder 52 by bolts.
[0061] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A refrigerator door opening and closing test machine, characterized in that, include: Base (1); The test machine frame (2) is welded to the top of the base (1) with an opening on one side. The refrigerator placement chamber (21) is located in the center of the test machine frame (2). The refrigerator positioning and limiting module (3) is located on the left and right sides of the test machine frame (2) by bolts at the top and at the bottom of the base (1) in the center. Refrigerator door opening and closing module (4), the refrigerator door opening and closing module (4) is provided in 2 sets, and the 2 sets of refrigerator door opening and closing modules (4) are arranged side by side on the left and right sides of the test machine frame (2); The refrigerator door pull-out module (5) is located below the refrigerator door opening and closing module (4). There are two sets of the refrigerator door pull-out module (5), and the two sets of refrigerator door pull-out modules (5) are arranged vertically and symmetrically on the left and right sides of the test machine frame (2).
2. The refrigerator door opening and closing test machine according to claim 1, characterized in that, The refrigerator positioning and limiting module (3) includes: Mounting plate (31) No. 1 is installed on the left and right sides of the top of the test machine frame (2) by bolt connection. Mounting plate (31) No. 1 has a square hole (32) in the center. Two clamping mounting blocks (33) are provided. The two clamping mounting blocks (33) are symmetrically arranged on the front and rear sides of the first mounting plate (31). The clamping mounting blocks (33) are located in the center of the mounting square hole (32). The two clamping mounting blocks (33) are connected to each other by bolts and clamped and fixed on the clamping mounting block (33). A first threaded hole is provided in the center of the clamping mounting block (33). A first hand-cranked screw (34) is inserted into a first threaded hole. The screw in the first hand-cranked screw (34) extends straight through the first threaded hole toward the center of the refrigerator placement chamber (21). A first pressure plate (35) is fitted at the bottom of the screw in the first hand-cranked screw (34) through a threaded fit. Waist holes (36) are symmetrically opened at the center of the top of the base (1); L-shaped positioning plate (37) is placed at the top center of the base (1), and the bolts on the left and right sides of the bottom of the L-shaped positioning plate (37) are locked in the waist hole (36); L-shaped mounting plate (38), the L-shaped mounting plate (38) is bolted to the left and right sides of the top of the base (1), the L-shaped mounting plate (38) has a No. 2 threaded hole in the center, and the left and right sides of the No. 2 threaded hole are balance through holes; The second hand-cranked screw (39) is inserted into the second threaded hole. The screw in the second hand-cranked screw (39) extends through the second threaded hole toward the L-shaped mounting plate (38). The bottom of the first hand-cranked screw (34) is fitted with a pressure plate (310) through a threaded fit. The positioning rod (311) has one side inserted into the balance through hole, and the other side of the positioning rod (311) is connected to the pressure plate (310) by welding.
3. The refrigerator door opening and closing test machine according to claim 2, characterized in that, The width of the clamping mounting block (33) is greater than the width of the mounting square hole (32).
4. The refrigerator door opening and closing test machine according to claim 3, characterized in that, The refrigerator door opening and closing module (4) includes: The second mounting plate (41) is symmetrically opened on the left and right sides of the test machine frame (2) by bolt connection. The second mounting plate (41) is set directly below the first mounting plate (31). The front and rear ends of the second mounting plate (41) near the opening side of the test machine frame (2) are provided with a rotating shaft frame, and a rotating shaft (42) is clamped in the center of the rotating shaft frame. A swing cylinder (43) is installed at the center of the second mounting plate (41) by bolts at the bottom. The top of the swing cylinder (43) extends toward the opening side of the test machine frame (2). A push plate (44) is installed at the top of the swing cylinder (43) by bolts. The bottom of the push plate (44) is connected to the rotating shaft (42) by welding. Refrigerator door drive arm (45), the refrigerator door drive arm (45) is set on the opening side of the test machine frame (2), one side of the refrigerator door drive arm (45) is connected to the rotating shaft (42) by welding, the refrigerator door drive arm (45) is C-shaped, and a cylindrical track (46) is welded on the side of the refrigerator door drive arm (45) near the L-shaped positioning plate (37); Handle block (47), the bottom of the handle block (47) is fitted on the cylindrical track (46), the top of the handle block (47) is C-shaped, and the top of the handle block (47) has three threaded holes on the left and right sides, and a locking rod (48) is provided in the three threaded holes; A connecting plate roller assembly (49) is provided on the side of the handle block (47) near the swing cylinder (43). The bottom of the connecting plate roller assembly (49) is sleeved on the cylindrical track (46), and the top roller of the connecting plate roller assembly (49) extends laterally toward the L-shaped positioning plate (37).
5. The refrigerator door opening and closing test machine according to claim 4, characterized in that, The refrigerator door pull-out module (5) includes: Mounting plate No. 3 (51) is symmetrically opened on the left and right sides of the test machine frame (2) by bolt connection, and is located directly below mounting plate No. 2 (41); A double-rod cylinder (52) is bolted to one side of the No. 3 mounting plate (51), and the top cylinder rod of the double-rod cylinder (52) extends toward the opening side of the test machine frame (2); The freezer handle (53) is L-shaped, and the bottom of the freezer handle (53) is connected to the cylinder rod of the double-rod cylinder (52) by bolts.
6. The refrigerator door opening and closing test machine according to claim 5, characterized in that, The freezer handle (53) has a hollow structure.
7. The refrigerator door opening and closing test machine according to claim 6, characterized in that, Weight reduction holes (6) are provided on the No. 2 mounting plate (41) and the No. 3 mounting plate (51).