CN219715133U

CN219715133U - Cold and hot impact test box

Info

Publication number: CN219715133U
Application number: CN202222931540.4U
Authority: CN
Inventors: 王鹏; 岳芳芳; 王佳佳
Original assignee: Xinghua Testing Co ltd
Current assignee: Xinghua Testing Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-09-19
Anticipated expiration: 2032-11-01

Abstract

The utility model relates to the technical field of test boxes and discloses a cold and hot impact test box which comprises a test box shell, wherein the front surface of the test box shell is rotatably connected with a sealing box door, and a test chamber is arranged in the test box shell. This cold and hot impact test case through setting up first seal receptacle and second seal receptacle, alright seal the logical groove department to under the effect of connecting rod, make first seal receptacle and second seal receptacle can synchronous movement, place the top at first seal receptacle with waiting to test the product, alright impact test to it at high temperature, when needs carry out low temperature impact test, drive first seal receptacle and second seal receptacle downwardly moving through the pneumatic cylinder shrink, make test product be located the inside of low temperature cavity, can seal thermal-insulated to logical groove department through the second seal receptacle simultaneously, avoid appearing mutual interference influence condition between two cavities, improve the test effect of test case.

Description

Cold and hot impact test box

Technical Field

The utility model relates to the technical field of test boxes, in particular to a cold and hot impact test box.

Background

The refrigeration cycle of the cold and hot impact experiment box adopts a reverse Carif cycle, and the cycle consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is compressed to a higher pressure by the heat insulation of the compressor, work is consumed to raise the exhaust temperature, and then the refrigerant exchanges heat with the surrounding medium isothermally by the condenser, and heat is transferred to the surrounding medium. The refrigerant is subjected to adiabatic expansion through a valve to do work, the temperature of the refrigerant is reduced, finally the refrigerant absorbs heat from objects with higher temperature through an evaporator isothermally, the temperature of the cooled objects is reduced, the circulation is repeated, the purpose of reducing temperature is achieved, the cold and hot impact experimental box is also called a cold and hot impact machine, the cold and hot impact experimental box is suitable for safety performance test of electronic elements, reliability test, product screening test and the like are provided, and meanwhile, the equipment test can improve the reliability of products and control the quality of the products.

The existing cold and hot impact test box has poor heat insulation performance when in use, when cold and hot alternate impact test is carried out on test products, the condition of mutual interference between a high-temperature chamber and a low-temperature chamber is easy to occur, the experiment effect of the cold and hot impact test box is reduced, and therefore the cold and hot impact test box is required to be provided for solving the problems.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the cold and hot impact test box which has the advantages that the position of a product is changed in the cold and hot alternative test process, meanwhile, the sealing and heat insulation operation can be carried out, the condition that the temperatures of two chambers are mutually interfered is avoided, the problem that the cold and hot impact test box is poor in heat insulation performance in use, the condition that the mutual interference occurs between a high-temperature chamber and a low-temperature chamber is easily caused when the cold and hot alternative impact test is carried out on a test product is solved, and the effect of the experiment of the cold and hot impact test box is reduced.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a cold and hot impact test case, includes the test case casing, the front of test case casing rotates and is connected with the seal chamber door, the inside of test case casing is provided with test chamber, the test chamber is corresponding with the position of seal chamber door, the inside fixedly connected with division board of test chamber, the inside fixed mounting of test case casing has the pneumatic cylinder, the pneumatic cylinder is located the below of test chamber, the inside of test chamber sets up the rack, the rack includes first sealing seat and second sealing seat, first sealing seat and second sealing seat all include two closing plates, first sealing seat and second sealing seat are connected through four connecting rods, the inside of pneumatic cylinder is provided with the piston rod, the top of piston rod and the bottom fixed connection of first sealing seat.

Preferably, the inner top wall of the test chamber is provided with a first groove, the inside of the partition plate is provided with a through groove penetrating up and down, the first sealing seat is located in the through groove and is matched with the inside of the through groove, the second sealing seat is located in the first groove, the upper sealing plate in the first sealing seat is smaller than the lower sealing plate, and the upper sealing plate in the second sealing seat is larger than the lower sealing plate.

Preferably, the inner bottom wall of the test chamber is provided with a second groove, the first sealing seat is matched with the inner part of the second groove, and the piston rod in the hydraulic cylinder is movably inserted into the inner part of the second groove.

Preferably, the inside fixed mounting of test box casing has the sealing ring, the inside piston rod of pneumatic cylinder and the inside activity grafting of sealing ring, the sealing ring is located under the second recess.

Preferably, the bottom fixedly connected with four locating levers of first seal seat, four constant head tanks have been seted up to the interior bottom wall of experimental cavity, the locating lever is pegged graft with the inside activity of constant head tank, and four locating levers evenly distributed is around first seal seat bottom, and four connecting rods correspond with the position of four locating levers respectively.

Preferably, the inside of experimental cavity is equipped with two cavities, and two cavities include high temperature cavity and low temperature cavity, the side surface of division board and the left and right sides inner wall fixed connection of experimental cavity, two cavities are located the upper and lower both sides of division board respectively.

Compared with the prior art, the utility model provides a cold and hot impact test box, which has the following beneficial effects:

1. this cold and hot impact test case through setting up first seal receptacle and second seal receptacle, alright seal the logical groove department to under the effect of connecting rod, make first seal receptacle and second seal receptacle can synchronous movement, place the top at first seal receptacle with waiting to test the product, alright impact test to it at high temperature, when needs carry out low temperature impact test, drive first seal receptacle and second seal receptacle downwardly moving through the pneumatic cylinder shrink, make test product be located the inside of low temperature cavity, can seal thermal-insulated to logical groove department through the second seal receptacle simultaneously, avoid appearing mutual interference influence condition between two cavities, improve the test effect of test case.

2. This cold and hot impact test case is through setting up the locating lever in the bottom of first seal seat to slide from top to bottom at the inside of constant head tank through the locating lever, alright carry out spacingly to first seal seat, make it more steady in carrying out the reciprocates the in-process, be difficult for appearing rocking the condition, can improve the sealed effect between first seal seat and the logical groove simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the front structure of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 1A according to the present utility model;

fig. 4 is a schematic diagram of a connection structure of a first seal holder and a second seal holder according to the present utility model.

Wherein: 1. a test chamber housing; 2. a test chamber; 3. a partition plate; 4. a hydraulic cylinder; 5. a first seal seat; 6. a second seal seat; 7. a connecting rod; 8. a first groove; 9. a through groove; 10. a second groove; 11. a seal ring; 12. a positioning rod; 13. a positioning groove; 14. sealing the door.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

Referring to fig. 1-4, a cold and hot impact test box comprises a test box shell 1, wherein an operation panel is arranged on the front surface of the test box shell 1, the operation of the device can be controlled through the operation panel, a sealing box door 14 is rotatably connected to the front surface of the test box shell 1, a visible window is arranged in the sealing box door 14, the inside of a test chamber 2 can be further watched, the test chamber 2 is arranged in the test box shell 1, the test chamber 2 corresponds to the sealing box door 14 in position, a separation plate 3 is fixedly connected in the test chamber 2, the separation plate 3 is made of heat-insulating materials, a heater and a refrigerator are arranged in the test chamber 2, the heater is positioned above the separation plate 3, the refrigerator is positioned below the separation plate 3, a hydraulic cylinder 4 is fixedly arranged in the test box shell 1, the hydraulic cylinder 4 is positioned below the test chamber 2, the inside of the test chamber 2 is provided with a placing frame, the placing frame comprises a first sealing seat 5 and a second sealing seat 6, the top of the first sealing seat 5 can be used for placing a product to be tested, the first sealing seat 5 and the second sealing seat 6 are made of heat insulation materials, the first sealing seat 5 and the second sealing seat 6 comprise two sealing plates, the two sealing plates are different in size, the first sealing seat 5 and the second sealing seat 6 are connected through four connecting rods 7, the upper end and the lower end of the connecting rod 7 are respectively fixedly connected with one side of the first sealing seat 5 and the opposite side of the second sealing seat 6, the first sealing seat 5 and the second sealing seat 6 can synchronously move, a piston rod is arranged in the hydraulic cylinder 4, the top end of the piston rod is fixedly connected with the bottom of the first sealing seat 5, and when the hydraulic cylinder 4 works to stretch out and draw back, the first sealing seat 5 can be driven to move up and down, realize the removal effect of whole rack.

Further, the first recess 8 has been seted up to the interior roof of test cavity 2, the logical groove 9 that runs through from top to bottom has been seted up to the inside of division board 3, first sealing seat 5 is located the inside of logical groove 9, and with the inside looks adaptation of logical groove 9, second sealing seat 6 is located the inside of first recess 8, the top closing plate in the first sealing seat 5 is less than the below closing plate, the top closing plate in the second sealing seat 6 is greater than the below closing plate, seal logical groove 9 department through first sealing seat 5, can prevent that the temperature interference condition from appearing between two upper and lower cavities, when first sealing seat 5 drives second sealing seat 6 down together and remove, the below closing plate in the second sealing seat 6 enters into the inside of logical groove 9, and the top overlap joint with division board 3, thereby realize sealing logical groove 9, avoid appearing the temperature interference condition between two upper and lower cavities, make the product can be effectual carries out cold and hot alternately to assault, improve the accurate effect of test result.

Further, the second recess 10 has been seted up to the interior bottom wall of test cavity 2, the inside looks adaptation of first seal seat 5 and second recess 10, the inside piston rod of pneumatic cylinder 4 is pegged graft with the inside activity of second recess 10, when first seal seat 5 moves down, drive second seal seat 6 together and move down, make the bottom of second seal seat 6 enter into the inside of leading to groove 9 and seal leading to groove 9, simultaneously first seal seat 5 can enter into the inside of second recess 10, make the inside seal of first seal seat 5 and second recess 10, make the product can effectually carry out low temperature impact test.

Further, the inside fixed mounting of test box casing 1 has sealing ring 11, and the inside piston rod of pneumatic cylinder 4 is pegged graft with the inside activity of sealing ring 11, and sealing ring 11 is located under the second recess 10, can seal the piston rod of pneumatic cylinder 4 and test cavity 2 junction through sealing ring 11, improves sealed effect, guarantees test effect.

Further, four locating rods 12 are fixedly connected to the bottom of the first sealing seat 5, four locating grooves 13 are formed in the inner bottom wall of the test chamber 2, the locating rods 12 are movably inserted into the inner portions of the locating grooves 13, the locating rods 12 are tightly attached to the inner walls of the locating grooves 13, sealing effect is achieved, four locating rods 12 are evenly distributed around the bottom of the first sealing seat 5, four connecting rods 7 are respectively corresponding to the positions of the four locating rods 12, when the hydraulic cylinder 4 works to drive the first sealing seat 5 to move downwards, the locating rods 12 move in the inner portions of the locating grooves 13, and therefore the first sealing seat 5 can be limited, and the first sealing seat 5 is enabled to be smooth and stable in moving and is not easy to shake.

Further, the inside of test cavity 2 is equipped with two cavities, and two cavities include high temperature cavity and low temperature cavity, and the side surface of division board 3 and the left and right sides inner wall fixed connection of test cavity 2, two cavities are located the upper and lower both sides of division board 3 respectively, divide into two cavities with the inside of test cavity 2 through division board 3, make the product reciprocate in the inside of test cavity 2, alright carry out cold and hot alternating test to it, and the operation is more convenient.

The application process of the utility model is as follows:

the sealing box door 14 is opened, then the product to be tested is placed at the top of the first sealing seat 5, then the sealing box door 14 is closed, the inside of the test chamber 2 is enabled to work through operating the control panel on the front face of the test box shell 1, the temperature of the high-temperature chamber above the high-temperature chamber is increased, the temperature of the low-temperature chamber below the high-temperature chamber is reduced, so that the high-temperature impact test can be conducted on the product, when the low-temperature impact test needs to be conducted, the hydraulic cylinder 4 contracts to drive the first sealing seat 5 and the second sealing seat 6 to move downwards, the test product is located in the low-temperature chamber, meanwhile, the first sealing seat 5 is located in the second groove 10, meanwhile, the bottom of the second sealing seat 6 is located in the through groove 9, sealing and heat insulation can be conducted on the through groove 9, and the low-temperature impact test of the product is achieved in the low-temperature chamber.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cold and hot impact test case, includes test case casing (1), its characterized in that: the utility model discloses a test box is characterized in that a sealing box door (14) is connected to the front rotation of test box casing (1), the inside of test box casing (1) is provided with test chamber (2), the position of test chamber (2) and sealing box door (14) is corresponding, the inside fixedly connected with division board (3) of test chamber (2), the inside fixed mounting of test box casing (1) has pneumatic cylinder (4), pneumatic cylinder (4) are located the below of test chamber (2), the inside of test chamber (2) sets up the rack, the rack includes first sealing seat (5) and second sealing seat (6), first sealing seat (5) and second sealing seat (6) all include two closing plates, first sealing seat (5) and second sealing seat (6) are connected through four connecting rods (7), the inside of pneumatic cylinder (4) is provided with the piston rod, the top of piston rod and the bottom fixed connection of first sealing seat (5).

2. A cold and hot impact test chamber according to claim 1, wherein: the inner top wall of the test chamber (2) is provided with a first groove (8), the inside of the partition plate (3) is provided with a through groove (9) penetrating up and down, the first sealing seat (5) is located inside the through groove (9) and is matched with the inside of the through groove (9), the second sealing seat (6) is located inside the first groove (8), the upper sealing plate in the first sealing seat (5) is smaller than the lower sealing plate, and the upper sealing plate in the second sealing seat (6) is larger than the lower sealing plate.

3. A cold and hot impact test chamber according to claim 1, wherein: the inner bottom wall of the test chamber (2) is provided with a second groove (10), the first sealing seat (5) is matched with the inside of the second groove (10), and the piston rod in the hydraulic cylinder (4) is movably inserted into the inside of the second groove (10).

4. A cold and hot impact test chamber according to claim 3, wherein: the inside fixed mounting of test box casing (1) has sealing ring (11), the inside piston rod of pneumatic cylinder (4) is pegged graft with the inside activity of sealing ring (11), sealing ring (11) are located under second recess (10).

5. A cold and hot impact test chamber according to claim 1, wherein: four locating rods (12) are fixedly connected to the bottom of the first sealing seat (5), four locating grooves (13) are formed in the inner bottom wall of the test chamber (2), the locating rods (12) are movably inserted into the locating grooves (13), the four locating rods (12) are uniformly distributed around the bottom of the first sealing seat (5), and the four connecting rods (7) correspond to the four locating rods (12) respectively.

6. A cold and hot impact test chamber according to claim 1, wherein: the inside of experimental cavity (2) is equipped with two cavities, and two cavities include high temperature cavity and low temperature cavity, the side surface of division board (3) is connected with the left and right sides inner wall fixed of experimental cavity (2), and two cavities are located the upper and lower both sides of division board (3) respectively.