High and low temperature impact test equipment

Abstract

The invention relates to the field of test equipment, in particular to high-low temperature impact test equipment which comprises an outer shell, a heating system and a refrigerating system, the heating system and the refrigerating system are arranged on the rear portion of the outer shell, a high-temperature chamber and a low-temperature chamber are arranged on the front portion of the outer shell in an up-and-down mode, and the high-temperature chamber and the low-temperature chamber are communicated through a channel. Room doors are arranged at the positions, corresponding to the high-temperature room and the low-temperature room, of the front face of the outer shell, a carrying fence is arranged in the high-temperature room and can enter the low-temperature room through a channel, a lifting device is arranged at the top of the carrying fence, and roller devices are arranged on the two sides of the top of the carrying fence; the roller device is clamped on a vertically arranged guide rail through an elastic mechanism, and the guide rail is fixed in the high-temperature chamber. The elastic mechanisms are additionally arranged on the rolling wheels, it is guaranteed that the rolling wheels make rolling contact with the guide rails all the time, and the stability and smoothness of the carrying fence in the vertical movement process are improved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and more particularly to a high and low temperature impact testing device. Background Technology

[0002] A thermal shock test chamber is a device for conducting thermal shock tests, also known as temperature shock tests or high and low temperature shock tests. These tests assess a product's adaptability to rapid changes in ambient temperature. The chamber uses its heating and cooling systems to create a high-temperature environment and a low-temperature environment, respectively. According to the requirements of the temperature shock test, the component under test (SUT) is placed in a basket within a designated chamber. Once both chambers reach and stabilize at their preset temperatures, a transmission mechanism moves the basket, allowing the SUT (e.g., electronic devices) to move between the high and low chambers. During this movement, the high and low chambers are connected, and the SUT moves from one high-temperature or low-temperature state to the other, resulting in a significant thermal load. The chamber must then quickly restore the temperature to the preset levels using either the cooling or heating system. After the temperature in the chamber containing the SUT has remained stable for an extended period, the transmission mechanism reverses the movement, returning the SUT to its original chamber. Again, the temperature must be quickly restored to the preset levels. This process is repeated multiple times to complete the temperature shock cycle test.

[0003] The basket in the existing thermal shock test chamber is usually equipped with roller guide rails on both sides to guide and constrain the up and down movement trajectory of the basket. The roller guide rails are affected by high or low temperature environments, and the following may occur during their operation: (1) the rollers are close to the guide rails, resulting in the basket sliding up and down poorly; (2) the gap between the rollers and the guide rails is too large, resulting in the basket swinging too much during the up and down movement. Summary of the Invention

[0004] In view of the above problems, the purpose of this invention is to provide a high and low temperature impact testing device. The technical solution adopted by this invention is as follows:

[0005] This invention provides a high and low temperature impact testing device, including an outer shell, a rear heating system and a cooling system of the outer shell, a high temperature chamber and a low temperature chamber arranged vertically at the front of the outer shell and connected by a channel, and a door corresponding to the positions of the high temperature chamber and the low temperature chamber at the front of the outer shell, a loading platform in the high temperature chamber, the loading platform entering the low temperature chamber through the channel, a lifting device at the top of the loading platform, and roller devices on both sides of the top of the loading platform, the roller devices being clamped on vertically arranged guide rails by elastic mechanisms, the guide rails being fixed in the high temperature chamber.

[0006] Preferably, the roller device includes a wheel frame, and roller groups are provided at both the front and rear ends of the wheel frame. Each roller group includes rollers arranged left and right, and the rollers are connected to the wheel frame through the elastic mechanism.

[0007] Preferably, the left and right side walls of the guide rail are provided with guide wheel grooves that cooperate with the rollers.

[0008] Preferably, the elastic mechanism includes a wheel arm, one end of which is connected to the axle of the roller, and the other end of which is fixed to a rotating shaft. The rotating shaft is rotatably connected to the wheel frame, and a torsional elastic member is provided on the rotating shaft. One end of the torsional elastic member is fixed to the wheel frame, and the other end is fixed to the rotating shaft.

[0009] Preferably, the torsional elastic member is a torsion spring.

[0010] Preferably, two roller sets are provided at both the front and rear ends of the wheel frame, and the two roller sets are arranged vertically.

[0011] Preferably, the lifting device includes a chain, one end of which is fixed to the top of the cargo rack, and the other end of which is guided by a sprocket and connected to the telescopic end of a cylinder.

[0012] Preferably, the lifting device includes a steel wire rope, one end of which is fixed to the top of the cargo rail, and the other end of which is wound around a winding reel, the winding reel being powered by a drive motor.

[0013] Preferably, the cargo rack includes a top plate, a bottom plate, and a support plate. The top plate and the bottom plate are connected by four connecting rods. Multiple brackets are provided on the connecting rods on the same side, and the two sides of the support plate overlap the brackets.

[0014] Preferably, the bottom of the outer casing is provided with casters and support feet.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0016] This invention improves the stability and smoothness of the cargo rack during its up-and-down movement by adding an elastic mechanism to the rollers to ensure that the rollers are always in rolling contact with the guide rail. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the front side structure of the high and low temperature impact testing equipment in Embodiment 1 of the present invention;

[0019] Figure 2This is a schematic diagram of the internal structure of the high and low temperature impact testing equipment in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the roller device and the elastic mechanism in Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the cargo compartment in Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic diagram of the lifting device in Embodiment 1 of the present invention;

[0023] Figure 6 This is a schematic diagram of the lifting device in Embodiment 2 of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. High-temperature chamber; 3. Low-temperature chamber; 4. Passageway; 5. Door; 6. Loading rack; 601. Top plate; 602. Bottom plate; 603. Support plate; 604. Connecting rod; 605. Bracket; 606; 7. Lifting device; 701. Chain; 702. Sprocket; 703. Cylinder; 704. Wire rope; 705. Winding reel; 706. Drive motor; 8. Roller assembly; 801. Wheel frame; 802. Roller group; 803. Roller; 9. Elastic mechanism; 901. Wheel arm; 902. Rotating shaft; 903. Torsional elastic component; 10. Guide rail; 1001. Guide wheel groove; 11. Caster; 12. Support foot. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figure 1 and 2As shown, this embodiment discloses a high and low temperature impact testing device, including an outer shell 1. The bottom of the outer shell 1 is provided with casters 11 and support legs 12. The front of the outer shell 1 is provided with a high temperature chamber 2 and a low temperature chamber 3. The rear of the outer shell 1 is provided with a heating system and a cooling system. The heating system heats the internal environment of the high temperature chamber 2, and the cooling system cools the internal environment of the low temperature chamber 3. The high temperature chamber 2 and the low temperature chamber 3 are arranged vertically and are connected to each other through a channel 4. The front of the outer shell 1 is provided with doors 5 corresponding to the positions of the high temperature chamber 2 and the low temperature chamber 3. The doors 5 are connected to the outer shell 1 by a hinge structure. The high temperature chamber 2 is provided with a loading rack 6. The loading rack 6 can enter the low temperature chamber 3 through the channel 4. The top of the loading rack 6 is provided with a lifting device 7. Roller devices 8 are provided on both sides of the top of the loading rack 6. The roller devices 8 are clamped on the vertically arranged guide rail 10 by an elastic mechanism 9. The guide rail 10 is fixed inside the high temperature chamber 2.

[0028] like Figure 3 As shown, the roller device 8 includes a wheel frame 801, which is fixed to the top of the cargo rack 6 by a bolt assembly. Roller sets 802 are provided at both the front and rear ends of the frame 801. Each roller set 802 includes rollers 803 arranged symmetrically on the left and right sides, and the rollers 803 are connected to the wheel frame 801 by an elastic mechanism 9.

[0029] Specifically, the elastic mechanism 9 includes a wheel arm 901, one end of which is connected to the axle of the roller 803, and the other end of which is fixed to a rotating shaft 902. The rotating shaft 902 is rotatably connected to the wheel frame 801, and a torsional elastic member 903 is provided on the rotating shaft 902. One end of the torsional elastic member 903 is fixed to the wheel frame 801, and the other end is fixed to the rotating shaft 902. When the ambient temperature rises and causes the roller to press tightly against the guide rail, the torsional elastic member 903 acts as a buffer to prevent the roller from pressing tightly against the guide rail. When the ambient temperature drops and causes the gap between the roller and the guide rail to become too large, the torsional elastic member 903 ensures that the roller 803 always rolls in contact with the guide rail 10, preventing excessive swing amplitude during the up-and-down sliding of the basket.

[0030] In this embodiment, the torsional elastic member 903 is a torsion spring.

[0031] In this embodiment, guide wheel grooves 1001 that cooperate with rollers 803 are provided on the left and right side walls of the guide rail 10. The rollers 803 roll within the guide wheel grooves 100.

[0032] In this embodiment, two roller groups 802 are provided at both the front and rear ends of the wheel frame 801, and the two roller groups 802 are arranged vertically.

[0033] like Figure 4As shown, the cargo compartment 6 includes a top plate 601, a bottom plate 602, and a support plate 603. The top plate 601 and the bottom plate 602 are connected by four connecting rods 604. Multiple brackets 605 are provided on the connecting rods 604 on the same side. The two sides of the support plate 603 overlap the brackets 605. The support plate 603 and the brackets 605 can be temporarily fixed with bolts.

[0034] like Figure 5 As shown, the lifting device 7 includes a chain 701. One end of the chain 701 is fixed to the top of the cargo rack 6, and the other end of the chain 701 is guided by a sprocket 702 and connected to the telescopic end of a cylinder 703. The cylinder 703 is installed and fixed inside the outer casing 1. The sprocket 702 is installed at the bottom of the outer casing 1. The chain 701 needs to pass through the pre-drilled holes on the high-temperature chamber 2 and the outer casing 1. The pre-drilled holes on the high-temperature chamber 2 and the chain 701 are fitted with a sliding seal.

[0035] Example 2

[0036] This embodiment provides another design structure for the lifting device 7, such as... Figure 6 As shown, the lifting device 7 includes a steel wire rope 704. One end of the steel wire rope 704 is fixed to the top of the cargo rail 6, and the other end of the steel wire rope 704 is wound around a winding reel 705. The winding reel 705 is disposed in the high-temperature chamber 2 and is rotatably connected to a support. The support is fixed to the top of the high-temperature chamber 2. One end of the winding reel 705 is poweredly connected to a drive motor 706 disposed outside the high-temperature chamber 2 via a connecting shaft. The drive motor 706 is fixedly installed inside the outer casing 1.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A high and low temperature impact testing device, comprising an outer shell (1), a rear heating system and a cooling system of the outer shell (1), a high temperature chamber (2) and a low temperature chamber (3) arranged at the front of the outer shell (1), the high temperature chamber (2) and the low temperature chamber (3) arranged vertically, the high temperature chamber (2) and the low temperature chamber (3) being connected by a channel (4), and a door (5) provided at the front of the outer shell (1) corresponding to the positions of the high temperature chamber (2) and the low temperature chamber (3), characterized in that: The high-temperature chamber (2) is equipped with a loading rack (6), which can enter the low-temperature chamber (3) through the channel (4). The top of the loading rack (6) is equipped with a lifting device (7), and both sides of the top of the loading rack (6) are equipped with roller devices (8). The roller devices (8) are clamped on the vertically arranged guide rail (10) by an elastic mechanism (9). The guide rail (10) is fixed inside the high-temperature chamber (2).

2. The high and low temperature impact testing equipment according to claim 1, characterized in that: The roller device (8) includes a wheel frame (801), and roller sets (802) are provided at both the front and rear ends of the wheel frame (801). Each roller set (802) includes rollers (803) arranged on the left and right sides. The rollers (803) are connected to the wheel frame (801) through the elastic mechanism (9).

3. The high and low temperature impact testing equipment according to claim 2, characterized in that: The left and right side walls of the guide rail (10) are provided with guide wheel grooves (1001) that cooperate with the roller (803).

4. The high and low temperature impact testing equipment according to claim 2, characterized in that: The elastic mechanism (9) includes a wheel arm (901), one end of which is connected to the axle of the roller (803), and the other end of which is fixed with a rotating shaft (902). The rotating shaft (902) is rotatably connected to the wheel frame (801), and a torsional elastic member (903) is provided on the rotating shaft (902). One end of the torsional elastic member (903) is fixed to the wheel frame (801), and the other end is fixed to the rotating shaft (902).

5. The high and low temperature impact testing equipment according to claim 4, characterized in that: The torsional elastic member (903) is a torsion spring.

6. The high and low temperature impact testing equipment according to claim 2, characterized in that: Two roller sets (802) are provided at both the front and rear ends of the wheel frame (801), and the two roller sets (802) are arranged vertically.

7. The high and low temperature impact testing equipment according to claim 1, characterized in that: The lifting device (7) includes a chain (701), one end of which is fixed to the top of the cargo rail (6), and the other end of which is guided by a sprocket (702) and connected to the telescopic end of a cylinder (703).

8. The high and low temperature impact testing equipment according to claim 1, characterized in that: The lifting device (7) includes a wire rope (704), one end of which is fixed to the top of the cargo rail (6), and the other end of which is wound around a winding reel (705), which is powered by a drive motor (706).

9. The high and low temperature impact testing equipment according to claim 1, characterized in that: The cargo rack (6) includes a top plate (601), a bottom plate (602) and a support plate (603). The top plate (601) and the bottom plate (602) are connected by four connecting rods (604). Multiple brackets (605) are provided on the connecting rods (604) on the same side. The two sides of the support plate (603) overlap the brackets (605).

10. The high and low temperature impact testing equipment according to claim 1, characterized in that: The bottom of the outer casing (1) is provided with casters (11) and support legs (12).

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