A temperature shock test system

Abstract

This utility model discloses a temperature shock testing system, including a first temperature chamber and a second temperature chamber arranged opposite to each other; a flatbed transport vehicle is placed between the first and second temperature chambers; a test specimen is placed on the flatbed transport vehicle; a second connecting ring and a first connecting ring are respectively set at the left and right ends of the flatbed transport vehicle; the first connecting ring is connected to one end of a first steel wire rope through a first steel wire rope wedge joint; the second connecting ring is connected to one end of a second steel wire rope through a second steel wire rope wedge joint; the other end of the first steel wire rope passes through a first pulley and a second pulley and then connects to a first electric winch; the other end of the second steel wire rope passes through a fourth pulley and a third pulley and then connects to a second electric winch; the left and right ends of the flatbed transport vehicle track are respectively placed inside the second and first temperature chambers; the flatbed transport vehicle is movably mounted on top of the flatbed transport vehicle track. This utility model can quickly and reliably achieve the position transfer of the product between different temperature chambers when conducting temperature shock tests on the product.

Description

Technical Field

[0001] This utility model relates to the field of product temperature shock testing technology, and in particular to a temperature shock testing system. Background Technology

[0002] Temperature shock testing is a test method used to evaluate the performance stability of a product under conditions of rapid temperature change. It is primarily used to assess the adaptability of different product models to sudden temperature fluctuations. With the increasing complexity of product development tasks and the need to assess the adaptability of different product models to temperature shock environments, the requirements for temperature shock testing of complete products are becoming increasingly stringent.

[0003] Currently, the most common temperature shock test chambers on the market are typically 1m³ in volume. 3 Or 2m 3 Therefore, for volumes greater than 2m³ 3 For products, the commonly used temperature shock test employs the well-known two-chamber method. However, this method is time-consuming and resource-intensive, requiring significant manpower for transferring large products between two different temperature chambers (i.e., temperature shock test chambers). Furthermore, with the continuous updating of national standards, the current two-chamber method can no longer meet the testing requirement of GJB150A "Laboratory Environmental Test Methods for Military Equipment: Temperature Shock Test," which stipulates that "the transfer time between two different temperature chambers should be less than 1 minute," thus failing to truly verify the adaptability of large products to temperature shock environments.

[0004] It should be noted that the two-chamber temperature shock test uses two independent chambers (a high-temperature chamber and a low-temperature chamber) to rapidly switch the product between pre-set high-temperature and low-temperature environments, simulating the impact of extreme temperature changes on the product. The two-chamber method utilizes the temperature difference between the high-temperature and low-temperature chambers to subject the product to rapid changes from high temperature to low temperature or vice versa within a short period, detecting any abnormalities in the product's physical and electrical properties under temperature shock, such as cracks, deformation, or functional failure. The transition time in the two-chamber temperature shock test refers to the time required for the product to transfer from one chamber (high-temperature or low-temperature) to the other; that is, the time interval from when the product leaves the original chamber to when it fully enters and contacts the target chamber environment. It is one of the core control parameters for measuring temperature shock testing, directly affecting the accuracy of the test results and the evaluation of the product.

[0005] Therefore, there is an urgent need to develop a technology that can quickly and reliably switch the position of a product between two different temperature chambers when conducting temperature shock tests on products (such as large products). Utility Model Content

[0006] The purpose of this invention is to address the technical deficiencies of existing technologies by providing a temperature shock testing system.

[0007] Therefore, this utility model provides a temperature shock test system, including a first temperature chamber and a second temperature chamber;

[0008] The first and second incubators are positioned opposite each other; a flatbed transport vehicle is placed between the first and second incubators.

[0009] The test specimens were placed on the flatbed transport vehicle;

[0010] The flatbed transport vehicle is used to transfer test specimens between the first and second temperature chambers.

[0011] The left and right ends of the flatbed transport vehicle are respectively equipped with a second connecting ring and a first connecting ring at their center positions;

[0012] The first connecting ring is connected to one end of the first wire rope through the first wire rope wedge joint;

[0013] The second connecting ring is connected to one end of the second wire rope via a second wire rope wedge joint;

[0014] The other end of the first wire rope passes over the first pulley and the second pulley in succession and is then connected to the first electric winch.

[0015] The other end of the second wire rope passes over the fourth and third pulleys in succession and is then connected to the second electric winch.

[0016] The second and first temperature chambers each contain the left and right ends of a horizontally distributed flatbed transfer car track.

[0017] The flatbed transfer car is mounted on top of the flatbed transfer car track and can be moved laterally.

[0018] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a temperature shock testing system with a scientific design. When conducting temperature shock tests on products (such as large products), it can quickly and reliably realize the position conversion of the product between two different temperature chambers, which has significant practical significance.

[0019] By applying this utility model, the problem of long conversion time required for switching positions between two different temperature chambers (i.e., temperature shock test chambers) during temperature shock testing of products (such as large products) can be solved. It can also effectively reduce the number of test personnel and solve the problem of close-range operation of products during temperature shock testing of large energetic products, and eliminate safety hazards during the test process. Attached Figure Description

[0020] Figure 1A schematic diagram of the composition structure of a temperature shock testing system provided by this utility model;

[0021] In the diagram: 1 is the flatbed transfer vehicle; 2 is the first wire rope wedge joint; 3 is the door of the first incubator; 4 is the first incubator; 5 is the flatbed transfer vehicle track.

[0022] 6 is the first wire rope; 7 is the first pulley; 9 is the second pulley; 11 is the first electric winch; 12 is the second electric winch; 13 is the motor; 15 is the third pulley;

[0023] 17 is the fourth pulley; 18 is the second wire rope; 19 is the second incubator; 20 is the door of the second incubator;

[0024] 21 is the second wire rope wedge joint; 22 is the speed reducer;

[0025] 101 is the first connecting ring, and 102 is the second connecting ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] See Figure 1 This utility model provides a temperature shock test system, including a first temperature chamber 4 and a second temperature chamber 19;

[0031] The first temperature chamber 4 and the second temperature chamber 19 are set opposite to each other;

[0032] A flatbed transport vehicle 1 is placed between the first incubator 4 and the second incubator 19.

[0033] The test specimen (i.e., the product that needs to undergo temperature shock testing) is placed on the flatbed transfer cart 1.

[0034] The flatbed transporter 1 is used to realize the transfer (i.e., position transfer) of the test specimen between the first temperature chamber 4 and the second temperature chamber 19.

[0035] A second connecting ring 102 and a first connecting ring 101 are respectively provided at the center positions of the left and right ends of the flatbed transfer vehicle 1;

[0036] The first connecting ring 101 is connected to one end of the first wire rope 6 through the first wire rope wedge joint 2;

[0037] The second connecting ring 102 is connected to one end of the second wire rope 18 through the second wire rope wedge joint 21;

[0038] The other end of the first wire rope 6 passes through the first pulley 7 and the second pulley 9 in succession and is connected to the first electric winch 11 (specifically, a portion of the rope may be wrapped around the first electric winch 11).

[0039] The other end of the second wire rope 18 passes through the fourth pulley 17 and the third pulley 15 in succession and is connected to the second electric winch 12 (specifically, a portion of the rope may be wrapped around the second electric winch 12).

[0040] The second temperature chamber 19 and the first temperature chamber 4 respectively contain the left and right ends of the horizontally distributed flatbed transfer car track 5.

[0041] The flatbed transfer car 1 is movably mounted on top of the flatbed transfer car track 5.

[0042] It should be noted that the first electric winch 11 is used to perform a winding operation (i.e., winding and shrinking the wire rope) or an unwinding operation (i.e., releasing and unfolding the wound wire rope) on the first wire rope 6. When the flatbed transfer cart 1 is initially placed between the second temperature chamber 19 and the first temperature chamber 4, the first wire rope 6 already has a predetermined first length of rope pre-wound (i.e., in advance) wound on the first electric winch 11. This predetermined first length may, for example, be greater than or equal to the distance between the right side wall of the first temperature chamber 4 and the left side wall of the second temperature chamber 19. The second electric winch 12 is used to perform a winding operation (i.e., winding and shrinking the wire rope) on the second wire rope 18, or to perform an unwinding operation (i.e., releasing and unfolding the wound wire rope) on the second wire rope 18. When the flatbed transfer car 1 is initially placed between the second temperature box 19 and the first temperature box 4, the second wire rope 18 has a pre-set second length of rope body pre-wound (i.e., in advance) on the second electric winch 12. The pre-set second length may be, for example, greater than or equal to the distance between the right side wall of the first temperature box 4 and the left side wall of the second temperature box 19.

[0043] It should also be noted that for the first electric winch 11 and the second electric winch 12, when one of them is performing a winding operation, the other performs the opposite operation (i.e., an unwinding operation); and when one of them is performing an unwinding operation, the other performs a winding operation.

[0044] In this invention, specifically, the first temperature chamber 4 and the second temperature chamber 19 are used to provide high-temperature and low-temperature environments during the temperature shock test, respectively, and to maintain the ambient temperature.

[0045] In this invention, specifically, the first temperature chamber 4 and the second temperature chamber 19 are both existing, well-known, and mature temperature shock test chambers, and the temperature difference between their internal environments is significant. When the first temperature chamber 4 is a high-temperature chamber, the second temperature chamber 19 is a low-temperature chamber. Conversely, when the first temperature chamber 4 is a low-temperature chamber, the second temperature chamber 19 is a high-temperature chamber.

[0046] In specific implementation, the first incubator 4 and the second incubator 19 are respectively provided with an openable first incubator door 3 and a second incubator door 20 on opposite sides;

[0047] It should be noted that the first temperature chamber 4 and the second temperature chamber 19 need to be placed face to face, and the placement distance is determined according to the lateral length of the flatbed transport vehicle 1. The first temperature chamber door 3 and the second temperature chamber door 20 use existing conventional side-sliding guide rails to ensure that they can be opened automatically in a horizontal manner, and the opening direction of the two temperature chamber doors is the same. The selection of the first temperature chamber 4 and the second temperature chamber 19 is determined according to the test conditions, the size of the test piece, and the internal dimensions of the test chamber. The test chamber can also be further designed to be explosion-proof for use in temperature shock tests of pyrotechnic test pieces.

[0048] It should be noted that the opening and closing structure of the incubator door is a conventional design and will not be described in detail here.

[0049] In this utility model, it should be noted that the flatbed transport vehicle 1 is designed and manufactured in combination with the size and weight of the first temperature chamber 4, the second temperature chamber 19, and the test specimen. A connecting ring is welded to the center of the left and right ends (i.e. the front and rear of the vehicle) of the flatbed transport vehicle 1 to connect the first steel wire rope 6 and the second steel wire rope 18.

[0050] The first wire rope 6 and the second wire rope 18 are used to simultaneously pull the flatbed transfer vehicle 1 and the test pieces on it during product conversion (i.e., position transfer) to ensure the smooth movement of the flatbed transfer vehicle 1.

[0051] It should also be noted that, for this utility model, the first wire rope wedge joint 2 and the second wire rope wedge joint 21 are used to securely fix the first wire rope 6 and the second wire rope 18 to a connecting ring of the flatbed transfer vehicle 1, thereby ensuring the smooth movement of the flatbed transfer vehicle 1 through the mutual traction of the two wire ropes, the first wire rope 6 and the second wire rope 18.

[0052] In this utility model, specifically, a first through hole is provided horizontally through the center of the right side wall of the first temperature chamber 4;

[0053] The first steel wire rope 6 passes laterally through the first through hole;

[0054] A second through hole is provided horizontally through the center of the left side wall of the second temperature chamber 19;

[0055] The second wire rope 18 passes laterally through the second through hole.

[0056] In practice, the diameter of the first through hole is larger than the diameter of the first wire rope (for example, 0.1 cm larger), so as not to affect the movement of the first wire rope.

[0057] The diameter of the second through hole is larger than the diameter of the second wire rope (e.g., 0.1 cm larger), so as not to affect the movement of the second wire rope.

[0058] In this invention, specifically, the flatbed transfer car track 5 is slidably connected to the flatbed transfer car 1. For example, the top of the flatbed transfer car track 5 has two horizontally distributed slide rails (i.e., recessed sliding grooves), and the bottom of the flatbed transfer car 1 has a slider at a position corresponding to each slide rail, with the slider slidably connected to the slide rail.

[0059] It should be noted that, for this utility model, a groove design is made on the ground (and the bottom surfaces of the first temperature chamber 4 and the second temperature chamber 19 are also the ground). The horizontally distributed grooves are used to install the flatbed transfer cart track 5, ensuring that the flatbed transfer cart track 5 does not protrude above the ground, thereby effectively avoiding affecting the opening and closing of the chamber door. The flatbed transfer cart track 5 runs from the right end of the inner side of the first temperature chamber 4 to the left end of the inner side of the second temperature chamber 19, in order to ensure that the flatbed transfer cart 1 can move smoothly on it.

[0060] In this utility model, specifically, the power input end of the first electric winch 11 and the power input end of the second electric winch 12 are respectively connected to the two output ends (i.e., output shafts) of the reducer 22.

[0061] The first electric winch 11 and the second electric winch 12 are used, under the drive of the reducer 22, to perform a winding operation (i.e., winding and shrinking the wire rope) on the first wire rope 6 and an unwinding operation (i.e., releasing and unfolding the wound wire rope) on the second wire rope 18, so that the flatbed transfer car 1 can move to the right, or are used, under the drive of the reducer 22, to perform an unwinding operation (i.e., releasing and unfolding the wound wire rope) on the first wire rope 6 and a winding operation (i.e., winding and shrinking the wire rope) on the second wire rope 18, so that the flatbed transfer car 1 can move to the left.

[0062] In practice, the reducer 22 is a conventional dual-output shaft reducer, and the first electric winch 11 and the second electric winch 12 are conventional electric winches with mature existing technology.

[0063] In specific implementation, the rotation speeds of the first electric winch 11 and the second electric winch 12 are preferably equal during operation. For example, the winding speed of the first electric winch 11 is equal to the unwinding speed of the second electric winch 12, or the unwinding speed of the first electric winch 11 is equal to the winding speed of the second electric winch 12.

[0064] It should be noted that the reducer 22 is used to drive the first electric winch 11 and the second electric winch 12. The first electric winch 11 and the second electric winch 12 are mainly used to enable the first wire rope 6 and the second wire rope 18 to "pull and release". For example, the second electric winch 12 performs a winding operation on the second wire rope 18 (i.e., winding and shrinking the wire rope), so that the second wire rope 18 exerts a pulling force on the flatbed transfer vehicle 1 to the left. At the same time, the first electric winch 11 performs an unwinding operation on the first wire rope 6 (i.e., releasing and unfolding the wound wire rope), so that the first wire rope 6 gradually unwinds and reduces the traction force applied to the right end of the flatbed transfer vehicle 1, thereby realizing the smooth leftward movement of the flatbed transfer vehicle 1.

[0065] For example, the first electric winch 11 performs a winding operation on the first wire rope 6 (i.e., winding and shrinking the wire rope), so that the first wire rope 6 exerts a pulling force on the flatbed transfer vehicle 1 to the right. At the same time, the second electric winch 12 performs an unwinding operation on the second wire rope 18 (i.e., releasing and unfolding the wound wire rope), so that the second wire rope 18 gradually unwinds and reduces the traction force applied to the left end of the flatbed transfer vehicle 1, thereby realizing the smooth rightward movement of the flatbed transfer vehicle 1.

[0066] In practice, the input shaft of the reducer 22 is connected to the output end of the motor (i.e., the power output shaft). In this invention, the motor 13 is connected to the input shaft of the reducer 22 to drive the reducer 22 to work.

[0067] Motor 13, specifically a 380V AC Y-type motor, is used to drive reducer 22.

[0068] In this utility model, specifically, both the first connecting ring and the second connecting ring 102 are U-shaped rings.

[0069] In this utility model, specifically, the shape formed by connecting the center points of the four pulleys, namely the first pulley 7, the second pulley 9, the third pulley 15 and the fourth pulley 17, is a rectangle.

[0070] In this utility model, specifically, the third pulley 15 and the fourth pulley 17 are symmetrically distributed front to back and parallel to each other, and their center points are on the same longitudinal straight line;

[0071] The second pulley 9 and the first pulley 7 are symmetrically distributed front to back and parallel to each other, and their center points are on the same longitudinal straight line;

[0072] The first pulley 7, the second pulley 9, the fourth pulley 17, and the third pulley 15 are all the same in shape and size.

[0073] In practice, the fourth pulley 17 and the first pulley 7 are symmetrically distributed from left to right, and their center points are on the same horizontal straight line.

[0074] The third pulley 15 and the second pulley 9 are symmetrically distributed from left to right, and their center points are on the same horizontal straight line;

[0075] In specific implementation, the first pulley 7, the second pulley 9, the fourth pulley 17, and the third pulley 15 are preferably fixed pulleys.

[0076] It should be noted that, in this utility model, the direction of the first wire rope 6 is changed by the first pulley 7 and the second pulley 9 to achieve a 90-degree turn, and the direction of the second wire rope 18 is changed by the third pulley 15 and the fourth pulley 17 to achieve a 90-degree turn, thus forming a circuit. After the speed of the motor 13 is reduced by the reducer 22, the first electric winch 11 and the second electric winch 12 are driven to work, realizing the position switching of the flatbed transfer vehicle in the two temperature boxes.

[0077] In practice, the diameters of the first wire rope 6 and the second wire rope 18 are the same;

[0078] The diameters of the four pulleys, namely the first pulley 7, the second pulley 9, the third pulley 15, and the fourth pulley 17, are all larger than the diameters of the first wire rope 6 and the second wire rope 18.

[0079] To better understand the technical solution of this utility model, the working principle of this utility model is explained below.

[0080] During the experiment, after the experimental system of this utility model is set up, the test piece is first placed on the flatbed transport vehicle 1;

[0081] Then, the first electric winch 11 and the second electric winch 12 are driven by the motor 13 to transport the test piece and the flatbed transfer car 1 together to the position between the first temperature chamber 4 and the second temperature chamber 19 (i.e., the middle position) via the first wire rope 6 and the second wire rope 18. Then the first temperature chamber door 3 and the second temperature chamber door 20 are closed.

[0082] It should be noted that because of the installation of the special track for the flat plate support (i.e., the flat plate transfer vehicle track 5), the incubator is not in a completely sealed state, but only relatively sealed. However, for large incubators, this unsealed state will not have an adverse effect on the temperature inside the chamber.

[0083] Then, the first temperature chamber 4 and the second temperature chamber 19 are opened. After the two temperature chambers have finished their insulation, the first temperature chamber door 3 and the second temperature chamber door 20 are opened simultaneously. Then, the motor 13, the reducer 22, and the first electric winch 11 and the second electric winch 12 are started. The first electric winch 11 and the second electric winch 12 enable the first steel wire rope 6 and the second steel wire rope 18 to be pulled and released at the same time, thereby realizing the overall movement of the flatbed transfer vehicle 1 and the test piece. This allows the test piece on the flatbed transfer vehicle 1 to be quickly and reliably transferred between the two temperature chambers.

[0084] For example, by winding the first wire rope 6 with the first electric winch and releasing the second wire rope 18 with the second electric winch, the test piece on the flatbed transfer cart 1 can be moved to the right from the position between the two temperature chambers into the first temperature chamber 4. Then, by winding the second wire rope 18 with the second electric winch and releasing the first wire rope 6 with the first electric winch, the test piece on the flatbed transfer cart 1 can be moved smoothly to the left from the inside of the first temperature chamber 4 into the inside of the second temperature chamber 19.

[0085] For example, by using the second electric winch to wind up the second steel wire rope 18 and the second electric winch to release the first steel wire rope 6, the test piece on the flatbed transfer cart 1 can be moved to the left into the second temperature chamber 19. Then, by using the first electric winch to wind up the first steel wire rope 6 and the second electric winch to release the second steel wire rope 18, the test piece on the flatbed transfer cart 1 can be smoothly moved from the inside of the second temperature chamber 19 to the inside of the first temperature chamber 4. Since the first temperature chamber 4 and the second temperature chamber 19 are two independent temperature chambers (high temperature chamber and low temperature chamber), the test piece can be quickly switched between the pre-set high temperature and low temperature environments to meet the requirements of temperature shock test.

[0086] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A temperature shock testing system, characterized in that, Including the first incubator (4) and the second incubator (19); The first temperature chamber (4) and the second temperature chamber (19) are arranged opposite to each other; a flatbed transfer vehicle (1) is placed between the first temperature chamber (4) and the second temperature chamber (19). The test specimens were placed on a flatbed transport vehicle (1); The flatbed transfer cart (1) is used to transfer the test specimen between the first temperature chamber (4) and the second temperature chamber (19); The left and right ends of the flatbed transfer vehicle (1) are respectively equipped with a second connecting ring (102) and a first connecting ring (101). The first connecting ring (101) is connected to one end of the first wire rope (6) through the first wire rope wedge joint (2); The second connecting ring (102) is connected to one end of the second wire rope (18) through the second wire rope wedge joint (21); The other end of the first wire rope (6) passes through the first pulley (7) and the second pulley (9) in succession and is then connected to the first electric winch (11); The other end of the second wire rope (18) passes through the fourth pulley (17) and the third pulley (15) in succession, and then connects to the second electric winch (12); The second temperature chamber (19) and the first temperature chamber (4) are respectively placed at the left and right ends of the horizontally distributed flatbed transfer car track (5); The flatbed transfer vehicle (1) is movably mounted on top of the flatbed transfer vehicle track (5).

2. The temperature shock testing system as described in claim 1, characterized in that, The first incubator (4) and the second incubator (19) are respectively provided with an openable first incubator door (3) and a second incubator door (20) on opposite sides.

3. The temperature shock testing system as described in claim 1, characterized in that, A first through hole is provided horizontally through the center of the right side wall of the first temperature chamber (4); The first wire rope (6) passes laterally through the first through hole; A second through hole is provided horizontally through the center of the left side wall of the second chamber (19); The second wire rope (18) passes laterally through the second through hole.

4. The temperature shock testing system as described in claim 3, characterized in that, The diameter of the first through hole is larger than the diameter of the first wire rope; The diameter of the second through hole is larger than the diameter of the second wire rope; And / or, The winding speed of the first electric winch (11) is equal to the unwinding speed of the second electric winch (12), or the unwinding speed of the first electric winch (11) is equal to the winding speed of the second electric winch (12).

5. The temperature shock testing system as described in claim 1, characterized in that, The flatbed transfer car track (5) is slidably connected to the flatbed transfer car (1).

6. The temperature shock testing system as described in claim 1, characterized in that, The power input end of the first electric winch (11) and the power input end of the second electric winch (12) are respectively connected to the two output ends of the reducer (22); The input shaft of the reducer (22) is connected to the output end of the motor; The motor (13) is used to drive the reducer (22) to work.

7. The temperature shock testing system as described in claim 1, characterized in that, Both the first connecting ring and the second connecting ring (102) are U-shaped rings.

8. The temperature shock testing system as described in claim 1, characterized in that, The shape formed by connecting the center points of the four pulleys (7, 9, 15, and 17) is a rectangle.

9. The temperature shock testing system as described in claim 1, characterized in that, The third pulley (15) and the fourth pulley (17) are symmetrically distributed front and back, and are parallel to each other, with their center points on the same longitudinal straight line; The second pulley (9) and the first pulley (7) are symmetrically distributed front and back, parallel to each other, and their center points are on the same longitudinal straight line; The first pulley (7), the second pulley (9), the fourth pulley (17), and the third pulley (15) are the same in shape and size.

10. The temperature shock testing system according to any one of claims 1 to 9, characterized in that, The fourth pulley (17) and the first pulley (7) are symmetrically distributed from left to right, and their center points are on the same horizontal straight line; The third pulley (15) and the second pulley (9) are symmetrically distributed from left to right, and their center points are on the same horizontal straight line; The first pulley (7), the second pulley (9), the fourth pulley (17), and the third pulley (15) are all fixed pulleys; The first wire rope (6) and the second wire rope (18) have the same diameter; The diameters of the four pulleys (7), (9), (15), and (17) are all greater than the diameters of the first wire rope (6) and the second wire rope (18).

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