High and low temperature impact test box

Abstract

The utility model relates to a high and low temperature impact test chamber, which comprises a test chamber body, a heat insulation plate and a movable frame, the heat insulation plate and the movable frame are arranged in the test chamber body, the heat insulation plate divides the upper side and the lower side of the test chamber body into a high temperature chamber and a low temperature chamber, and a first through hole is formed in the heat insulation plate. The moving frame is in sliding sealing fit with the first through hole, the four side walls of the moving frame are attached to the four side walls of the first through hole respectively, a second through hole is formed in the moving frame in the horizontal direction, and the height of the second through hole is smaller than or equal to that of the first through hole. A driving mechanism used for driving the moving frame to move up and down is arranged on the upper side in the test box body, and a first sealing part and a second sealing part used for abutting against the upper side and the lower side of the heat insulation plate are arranged on the upper side and the lower side of the moving frame respectively. According to the high and low temperature impact test box, when high and low temperature conversion is carried out on a product, the situation of mutual interference and influence between the high temperature chamber and the low temperature chamber can be avoided, so that the test effect of a high and low temperature impact test is ensured.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically to a high and low temperature impact test chamber. Background Technology

[0002] High and low temperature impact test chambers are essential testing equipment for the metal, plastic, rubber, and electronic materials industries. They are used to test the degree to which material structures or composite materials can withstand extremely high and low temperature environments in an instant, allowing for the detection of chemical changes or physical damage to samples caused by thermal expansion and contraction in the shortest possible time.

[0003] The most common high and low temperature impact test chamber is the two-chamber type. The two-chamber type high and low temperature impact test chamber is divided into a high chamber and a low chamber. The moving frame containing the product is driven by a motor to move from the low chamber to the high chamber and then from the high chamber to the low chamber to achieve the conversion between high and low temperatures. However, when the moving frame moves and switches between the high and low chambers, it is easy to cause mutual interference between the high chamber and the low chamber, which will affect the results of the high and low temperature impact test. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a high and low temperature impact test chamber that avoids mutual interference between the high and low temperature chambers when the product is switched between high and low temperatures, thereby ensuring the test effect of the high and low temperature impact test.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a high and low temperature impact test chamber, including a test chamber body, a heat insulation plate and a movable frame disposed inside the test chamber body, the heat insulation plate dividing the upper and lower sides of the test chamber body into a high temperature chamber and a low temperature chamber, a first through hole being opened on the heat insulation plate, the movable frame slidingly sealingly engaging with the first through hole and the four side walls of the movable frame respectively fitting against the four side walls of the first through hole, a second through hole being opened on the movable frame along the horizontal direction, the height of the second through hole being less than or equal to the height of the first through hole, a drive mechanism for driving the movable frame to move up and down being provided on the upper side inside the test chamber body, and a first sealing part and a second sealing part being provided on the upper and lower sides of the movable frame respectively for abutting against the upper and lower sides of the heat insulation plate.

[0006] The working principle of this solution is as follows: During the test, the product is placed on the bottom wall of the second through hole on the moving frame. Then, the moving frame is moved up and down by the drive mechanism. Assuming that a low-temperature test is required before a high-temperature test, the moving frame is moved downward by the drive mechanism, so that the second through hole connects with the low-temperature chamber until the first sealing part abuts against the upper side of the heat insulation plate. At this time, the product is located in the low-temperature chamber and the low-temperature chamber and the high-temperature chamber are isolated, and the product can be tested at low temperature. After the low-temperature test is completed, the moving frame is moved upward by the drive mechanism. During this process, the moving frame will first move to the top wall of the second through hole and be flush with the top wall of the first through hole. Since the height of the second through hole is less than or equal to the height of the first through hole, the second through hole is aligned with the first through hole or is completely located in the first through hole. The product located in the second through hole does not come into contact with the air in the high-temperature chamber or the low-temperature chamber. Then the moving frame continues to move upward, and the second through hole connects with the high-temperature chamber until the second sealing part abuts against the lower side of the heat insulation plate. At this time, the product is located in the high-temperature chamber and the low-temperature chamber and the high-temperature chamber are isolated, and the product can be tested at high temperature.

[0007] Compared with the prior art, the beneficial effects of this solution are as follows: Since the height of the second through hole on the moving frame is less than or equal to the height of the first through hole on the heat insulation plate, and the product is located on the bottom wall of the second through hole, when the product is switched between high and low temperatures, the moving frame always maintains communication with only one of the high-temperature chamber or the low-temperature chamber. Compared with the prior art, which moves the product into the high-temperature chamber or the low-temperature chamber and then isolates the high-temperature chamber and the low-temperature chamber through a sealing device, by aligning or misaligning the second through hole on the moving frame with the first through hole on the heat insulation plate, the high-temperature chamber and the low-temperature chamber are always kept isolated, avoiding mutual interference between the two chambers, thereby ensuring the test effect of the high and low temperature impact test.

[0008] In a preferred embodiment of this utility model, the distance between the bottom wall of the second through hole and the lower side of the movable frame is greater than or equal to the height of the first through hole.

[0009] The beneficial effects of this solution are: the distance between the bottom wall of the second through hole and the lower side of the moving frame is greater than or equal to the height of the first through hole, which allows the moving frame to move to the bottom wall of the second through hole to be flush with or beyond the upper side of the heat insulation plate, so that the product placed on the bottom wall of the second through hole can be completely located in the high temperature chamber, thereby achieving better test results.

[0010] In a preferred embodiment of the present invention, the second through hole is provided along the front and rear sides of the movable frame, and the left and right sides of the movable frame are respectively provided with a third through hole communicating with the second through hole, and a placement groove is opened at the bottom of the second through hole.

[0011] The beneficial effects of this solution are: the movable frame is open on all four sides, which not only facilitates the placement and retrieval of products, but also increases the contact area between the products and the air in the high-temperature or low-temperature chamber, making the test more thorough and avoiding affecting the test results; the bottom of the second through hole has a placement groove, which allows the products to be placed in the placement groove, preventing the products from falling off the movable frame during the up-and-down movement.

[0012] In a preferred embodiment of the present invention, the heat insulation plate is provided with slots on the upper and lower sides, the slots are arranged around the first through hole, the first sealing part and the second sealing part have the same structure, the first sealing part includes a first sealing plate arranged on the upper side of the movable frame, and a locking block for engaging with the slot is provided on the lower side of the first sealing plate.

[0013] The beneficial effects of this solution are as follows: When the second through hole moves to connect with the low-temperature chamber, the moving frame continues to move downward through the drive mechanism until the lower side of the first sealing plate abuts against the upper side of the insulation plate. At this time, the locking block set on the lower side of the first sealing plate engages with the locking groove set on the insulation plate, which seals the low-temperature chamber and isolates it from the high-temperature chamber, thereby achieving better experimental results.

[0014] In a preferred embodiment of the present invention, a connecting rod is provided on the upper side of the first sealing part, and a connecting hole is provided on the connecting rod along its axial direction. A placement cavity is provided on the upper side inside the test chamber body. The driving mechanism includes a motor assembly disposed in the placement cavity. The output shaft of the motor assembly is connected to a screw, and the screw is threadedly connected to the connecting hole.

[0015] The beneficial effects of this solution are as follows: When it is necessary to move the mobile frame up and down, the motor assembly is started, the output shaft rotates, and the screw connected to the output shaft rotates. Since the screw is threadedly connected to the connecting rod, the rotation of the screw can drive the connecting rod to move up and down, that is, drive the mobile frame to move up and down, thereby realizing the transfer of products between the high temperature chamber and the low temperature chamber.

[0016] In a preferred embodiment of this utility model, the test chamber body is provided with a sealed door on the front side, and the sealed door is provided with an observation window, which is transparent.

[0017] The beneficial effects of this solution are: the product's condition at any given moment can be observed through a transparent viewing window, providing a more comprehensive understanding of the product's performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the high and low temperature impact test chamber of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the test chamber body in this embodiment.

[0020] Figure 3 This is a schematic diagram of the structure of the mobile frame in this embodiment.

[0021] Figure 4 This is a schematic diagram of the structure when the first sealing part abuts against the upper side of the heat insulation plate.

[0022] Figure 5 This is a schematic diagram of the structure when the second through hole is aligned with the first through hole.

[0023] Figure 6 This is a schematic diagram of the structure when the second sealing part abuts against the lower side of the heat insulation plate. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only for explaining the present invention and do not limit the scope of protection of the present invention.

[0025] The terms "first," "second," etc., used in the specification, claims, and embodiments of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0026] The present invention will be further described in detail below through preferred embodiments:

[0027] The reference numerals in the accompanying drawings include: test chamber body 1, high temperature chamber 101, low temperature chamber 102, placement chamber 103, heat insulation plate 2, first through hole 201, slot 202, moving frame 3, second through hole 301, third through hole 302, placement groove 303, first sealing part 4, first sealing plate 401, locking block 402, second sealing part 5, connecting rod 6, motor assembly 7, screw 8, sealed chamber door 9, observation window 901.

[0028] As attached Figure 1 and attached Figure 2As shown: The high and low temperature impact test chamber of this embodiment includes a test chamber body 1. The test chamber body 1 is provided with a heat insulation plate 2 inside. The heat insulation plate 2 has a first through hole 201. The upper and lower sides of the heat insulation plate 2 are respectively provided with slots 202. The slots 202 are arranged around the first through hole 201. The heat insulation plate 2 divides the upper and lower sides of the test chamber body 1 into a high temperature chamber 101 and a low temperature chamber 102. The high temperature chamber 101 and the low temperature chamber 102 are respectively provided with a heater and a cooler (not shown in the figure). The heater and cooler are existing technologies, so they will not be described in detail here. The upper side of the test chamber body 1 is provided with a placement cavity 103. The front side of the test chamber body 1 is provided with a sealed door 9. The sealed door 9 is provided with an observation window 901. The observation window 901 is transparent. In this embodiment, there are two observation windows 901, and the two observation windows 901 correspond to the positions of the high temperature chamber 101 and the low temperature chamber 102, respectively.

[0029] As attached Figure 3 and attached Figure 4 As shown: The test chamber body 1 is provided with a movable frame 3. The movable frame 3 is slidably sealed with the first through hole 201, and the four side walls of the movable frame 3 are respectively attached to the four side walls of the first through hole 201. The movable frame 3 has a second through hole 301 opened in the horizontal direction. The bottom of the second through hole 301 has a placement groove 303. The height of the second through hole 301 is less than or equal to the height of the first through hole 201. In this embodiment, the height of the second through hole 301 is the same as the height of the first through hole 201. The distance between the bottom wall of the second through hole 301 and the lower side of the movable frame 3 is greater than or equal to the height of the first through hole 201. Furthermore, the second through hole 301 is arranged along the front and rear sides of the movable frame 3. The left and right sides of the movable frame 3 are respectively provided with a third through hole 302 communicating with the second through hole 301.

[0030] As attached Figures 3-6 As shown: The upper and lower sides of the movable frame 3 are respectively provided with a first sealing part 4 and a second sealing part 5 for abutting against the upper and lower sides of the heat insulation plate 2. The first sealing part 4 and the second sealing part 5 have the same structure. The first sealing part 4 includes a first sealing plate 401 provided on the upper side of the movable frame 3. The lower side of the first sealing plate 401 is provided with a locking block 402 for engaging with the locking groove 202. The upper side of the first sealing part 4 is provided with a connecting rod 6. The connecting rod 6 has a connecting hole along its axial direction. The upper side of the test chamber body 1 is provided with a driving mechanism for driving the movable frame 3 to move up and down. The driving mechanism includes a motor assembly 7 provided in the placement cavity 103. The output shaft of the motor assembly 7 is connected to a screw 8. The screw 8 is threadedly connected to the connecting hole.

[0031] Specific usage process:

[0032] During the test, the product is placed on the bottom wall of the second through hole 301 on the movable frame 3. Then, the movable frame 3 is moved up and down by the drive mechanism. Assuming that the product needs to be tested at low temperature first and then at high temperature, the motor assembly 7 is started. The output shaft of the motor assembly 7 rotates, which drives the screw 8 to rotate. Since the movable frame 3 is limited by the first through hole 201, it will not rotate with the screw 8. Therefore, the rotation of the screw 8 drives the connecting rod 6, which is threaded to it, to move down, that is, it drives the movable frame 3 to move down, so that the second through hole 301 is connected to the low temperature chamber 102, until the first sealing plate 401 abuts against the upper side of the heat insulation plate 2. At this time, the locking block 402 set on the lower side of the first sealing plate 401 engages with the locking groove 202 set on the heat insulation plate 2, as shown in the attached figure. Figure 4 As shown, the product is located in the low temperature chamber 102 and the low temperature chamber 102 is isolated from the high temperature chamber 101, so the product can be tested at low temperature.

[0033] After the low-temperature test is completed, the moving frame 3 is moved upward by the drive mechanism. During this process, the moving frame 3 will first move to the top wall of the second through hole 301, which will be flush with the top wall of the first through hole 201. Since the first through hole 201 and the second through hole 301 are at the same height, the second through hole 301 is aligned with the first through hole 201 at this time, as shown in the attached figure. Figure 5 As shown, the product located in the second through hole 301 does not come into contact with the air in the high temperature chamber 101 or the low temperature chamber 102. Then the moving frame 3 continues to move upward, and the second through hole 301 connects with the high temperature chamber 101 until the second sealing part 5 abuts against the lower side of the heat insulation plate 2. At this time, the product is located in the high temperature chamber 101 and the low temperature chamber 102 is isolated from the high temperature chamber 101, so the product can be tested at high temperature.

[0034] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. Typical known structures and common knowledge techniques in the preferred embodiments have not been described in detail here. Those skilled in the art can improve and implement the technical solution of this utility model based on the inspiration given in these embodiments and their own capabilities. Some typical known structures, known methods or common knowledge techniques should not be obstacles for those skilled in the art to implement this application.

[0035] The scope of protection claimed in this application shall be determined by the contents of its claims. The contents of the utility model description, specific embodiments, and drawings are used to interpret the claims.

[0036] Within the scope of the technical concept of this application, several modifications can be made to the specific implementation of this application, and these modified implementations should also be considered within the protection scope of this application.

Claims

1. A high and low temperature impact test chamber, comprising a test chamber body, a heat insulation plate disposed inside the test chamber body, and a movable frame, wherein the heat insulation plate divides the upper and lower sides of the test chamber body into a high temperature chamber and a low temperature chamber, characterized in that: The heat insulation plate has a first through hole, the movable frame is slidably sealed with the first through hole and the four side walls of the movable frame are respectively attached to the four side walls of the first through hole. The movable frame has a second through hole in the horizontal direction, the height of the second through hole is less than or equal to the height of the first through hole. The upper side of the test chamber body is provided with a drive mechanism for moving the movable frame up and down. The upper and lower sides of the movable frame are respectively provided with a first sealing part and a second sealing part for abutting against the upper and lower sides of the heat insulation plate. The heat insulation plate is provided with slots on the upper and lower sides respectively. The slots are arranged around the first through hole. The first sealing part and the second sealing part have the same structure. The first sealing part includes a first sealing plate arranged on the upper side of the movable frame. The lower side of the first sealing plate is provided with a locking block for engaging with the slot. The first sealing part is provided with a connecting rod on its upper side, and a connecting hole is opened on the connecting rod along its axial direction. The upper side of the test chamber body is symmetrically provided with placement cavities. The driving mechanism includes a motor assembly disposed in the placement cavity. The output shaft of the motor assembly is connected to a screw, and the screw is threadedly connected to the connecting hole.

2. The high and low temperature impact test chamber according to claim 1, characterized in that: The distance between the bottom wall of the second through hole and the lower side of the moving frame is greater than or equal to the height of the first through hole.

3. The high and low temperature impact test chamber according to claim 2, characterized in that: The second through hole is provided along the front and rear sides of the movable frame, and the left and right sides of the movable frame are respectively provided with a third through hole communicating with the second through hole. A placement groove is opened at the bottom of the second through hole.

4. The high and low temperature impact test chamber according to claim 1, characterized in that: The test chamber body is provided with a sealed door on the front side, and the sealed door is provided with an observation window, which is transparent.

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