Hot air aging test box

Abstract

The utility model provides a hot air aging test box which comprises a box body, a base arranged in the box body, a workbench connected to the top end of the base, a sliding groove formed in the top end of the base, a sliding rail arranged at the bottom end of the workbench, a reciprocating screw rod connected to the middle of the front end of the workbench, a rotating ring arranged at the top end of the workbench, and a ratchet wheel connected to the bottom end of the rotating ring. The right side wall of the adjusting block is connected with a spring, a groove is formed in the right side of the top end of the workbench, the top end of the workbench is connected with a fixing piece, and a fixing column is installed at the top end of the rotating ring. By arranging the reciprocating screw rod, the sliding groove and the sliding rail, the workbench can move front and back, a sample can be conveniently placed in the box body, the sample can be fixed by arranging the fixing piece, the situation that the sample shakes to affect detection during detection is prevented, and by arranging the adjusting block and the spring, it can be guaranteed that the pawl makes contact with the side wall of the ratchet wheel all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of aging test boxes, and more specifically to a hot air aging test box. Background Art

[0002] Hot air aging test chamber, experimental equipment, is suitable for heat resistance test of non-metallic materials, ventilation aging test of electronic parts and components, and plasticized products. In the process of quality inspection of wires and cables, it is often necessary to use aging test chambers to test the anti-aging ability of wires and cables to ensure the qualification of wires and cables and make the use of wires and cables safer. At present, the hot air aging test chamber is equipped with a bracket for placing samples, but the internal space of the hot air aging test chamber is small, which makes it inconvenient for staff to operate when placing samples.

[0003] For example, the Chinese utility model with application number 202320165033.6 proposes a hot air aging test chamber. The patent first starts the servo motor to drive the first gear to rotate in the forward direction, and drives the worm to rotate through the meshing of the first gear and the second gear, and drives the two lead screws to rotate through the meshing of the worm and the worm wheel. The lead screw drives the movable plate to move outward from the slot through the action of threaded engagement, and drives the cover plate to move away from the hot air aging test chamber body through the movable plate, and drives the support plate and the sample plate to move outward through the cover plate, so as to facilitate the user to place the sample. However, the patent cannot fix the sample, and the test chamber will shake violently during operation, causing the sample to shake, affecting the test results.

[0004] Therefore, the utility model proposes a hot air aging test box. Utility Model Content

[0005] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a hot air aging test box, which can clamp and fix the sample through the fixing parts when in use, and can facilitate the movement of the workbench by providing the slide groove and the slide rail.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: it comprises a box body, a base is installed inside the box body, a workbench is connected to the top of the base, a slide groove is provided at the top of the base, a slide rail is installed at the bottom of the workbench, a reciprocating screw is connected to the middle of the front end of the workbench, a rotating ring is installed at the top of the workbench, a ratchet is connected to the bottom end of the rotating ring, a pawl is meshed and connected to the side wall of the ratchet, an adjusting block is connected to the top of the pawl, a spring is connected to the right side wall of the adjusting block, a groove is provided on the right side of the top of the workbench, a fixing piece is connected to the top of the workbench, and a fixing column is installed at the top of the rotating ring.

[0007] A further preferred solution is that the slide rail is located in a slide groove, and the workbench is movably connected to the base via the slide rail and the slide groove.

[0008] A further preferred solution is that the rear end of the reciprocating screw rod passes through the side wall of the box body and is connected to a motor, and the reciprocating screw rod is threadedly connected to the workbench.

[0009] A further preferred solution: there are two fixing parts in total, which are respectively located at the upper right corner and the lower left corner of the top of the workbench, and the length of the fixing part is longer than the radius of the rotating ring.

[0010] A further preferred solution is that the fixing member is rotatably connected to the workbench, a through slot is provided in the middle of the fixing member, and the fixing column is located in the through slot.

[0011] A further preferred solution is that an inner cavity is opened inside the workbench, the ratchet and the pawl are located in the inner cavity, the ratchet is rotatably connected to the bottom wall of the inner cavity, and the pawl is rotatably connected to the bottom wall of the inner cavity at one end away from the ratchet.

[0012] A further preferred solution: the adjustment block is located at one end of the pawl close to the ratchet wheel and is fixedly connected to the pawl, the adjustment block and the spring are both located in the groove, the left end of the spring is fixedly connected to the adjustment block, and the right end of the spring is fixedly connected to the side wall of the groove.

[0013] Beneficial effects:

[0014] 1. The reciprocating screw, the slide groove and the slide rail are arranged. The reciprocating screw rotates. Since the workbench is threadedly connected to the reciprocating screw, the workbench moves forward, so that the workbench can be moved to the outside of the box, which is convenient for placing the sample into the box. At the same time, the workbench drives the slide rail to move along the slide groove, which can reduce the friction of the workbench when moving, and play an auxiliary movement role for the workbench;

[0015] 2. By setting a fixing part, the sample is placed in the middle of the rotating ring, and then the rotating ring is rotated. At this time, the fixing column rotates with the rotating ring, thereby driving one end of the fixing part to move toward the center of the rotating ring until the fixing part contacts the side wall of the sample, and then the fixing part clamps and fixes the sample to prevent the sample from shaking during the test and affecting the test;

[0016] 3. By providing an adjusting block and a spring, the end of the pawl that contacts the ratchet will bounce to the right due to the force of the ratchet rotation. After the pawl moves to the right, it will drive the adjusting block to move to the right, and then the adjusting block compresses the spring. After the spring is compressed, it will release the reaction force. After the adjusting block is subjected to the reaction force, it will move to the left to reset, and then drive the pawl to reset, thereby ensuring that the pawl is always in contact with the side wall of the ratchet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model from above.

[0019] Figure 3 It is a front sectional structural schematic diagram of the utility model.

[0020] Figure 4 For the utility model Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0021] Figure 5 It is a schematic structural diagram of the ratchet and the pawl of the utility model.

[0022] Figure 1-5 In: 1. Box; 2. Workbench; 3. Reciprocating screw; 4. Slide rail; 5. Rotating ring; 6. Fixing piece; 7. Adjusting block; 8. Groove; 9. Fixing column; 10. Spring; 11. Slide groove; 12. Paw; 13. Ratchet; 14. Base. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the utility model Figure 1-Figure 5 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0024] See also Figure 1-5In the embodiment of the utility model, a hot air aging test box includes a box body 1, a base 14 is installed inside the box body 1, a workbench 2 is connected to the top of the base 14, a slide groove 11 is opened at the top of the base 14, a slide rail 4 is installed at the bottom of the workbench 2, a reciprocating screw rod 3 is connected to the middle of the front end of the workbench 2, a rotating ring 5 is installed at the top of the workbench 2, a ratchet 13 is connected to the bottom end of the rotating ring 5, a pawl 12 is meshed and connected to the side wall of the ratchet 13, an adjusting block 7 is connected to the top of the pawl 12, a spring 10 is connected to the right side wall of the adjusting block 7, a groove 8 is opened on the right side of the top of the workbench 2, a fixing piece 6 is connected to the top of the workbench 2, and a fixing column 9 is installed at the top of the rotating ring 5. First, the reciprocating screw rod 3 is rotated to move the workbench 2 forward until it moves outside the box body 1, and then the sample is placed on the rotating ring 5. The rotating ring 5 is in the middle of the ring 5, and the rotating ring 5 is rotated. At this time, the fixing column 9 rotates with the rotating ring 5, and then drives one end of the fixing part 6 to move toward the center of the rotating ring 5 until the fixing part 6 contacts the side wall of the sample. The sample is clamped and fixed by the fixing part 6. The ratchet 13 and the pawl 12 can prevent the rotating ring 5 from rotating in the opposite direction to cause the fixing part 6 to loosen, and then the reciprocating screw rod 3 is rotated in the opposite direction to move the workbench 2 into the box body 1; when the sample detection is completed and needs to be removed, the staff can move the adjusting block 7 to the right, and then drive the end of the pawl 12 that contacts the ratchet 13 to move to the right, so that the pawl 12 is away from the side wall of the ratchet 13. At this time, the rotating ring 5 can be rotated in the opposite direction to move the fixing part 6 toward the outer wall of the rotating ring 5, and then the fixing part 6 is away from the side wall of the sample, and finally the sample is removed.

[0025] In the embodiment of the utility model, the slide rail 4 is located in the slide groove 11, and the workbench 2 is movably connected to the base 14 through the slide rail 4, the slide groove 11, and the rear end of the reciprocating screw 3 passes through the side wall of the box 1 and is connected to the motor. The reciprocating screw 3 is threadedly connected to the workbench 2. By providing the reciprocating screw 3, the slide groove 11 and the slide rail 4, the workbench 2 can be moved back and forth, which is convenient for placing the sample into the box 1.

[0026] When in use, start the motor to rotate the reciprocating screw 3. Since the workbench 2 is threadedly connected to the reciprocating screw 3, the workbench 2 moves forward. At the same time, the workbench 2 drives the slide rail 4 to move along the slide groove 11, which can reduce the friction of the workbench 2 during movement and assist the movement of the workbench 2. After the workbench 2 moves to the outside of the box 1, place the sample on the workbench 2, and then rotate the reciprocating screw 3 in the opposite direction to move the workbench 2 backward until it moves to the inside of the box 1.

[0027] There are two fixing parts 6, which are respectively located at the upper right corner and the lower left corner of the top of the workbench 2. The length of the fixing part 6 is longer than the radius of the rotating ring 5. The fixing part 6 is rotatably connected to the workbench 2. A through groove is opened in the middle of the fixing part 6, and the fixing column 9 is located in the through groove. The fixing part 6 can be provided to fix the sample to prevent the sample from shaking during the test and affecting the test.

[0028] When in use, first place the sample in the middle of the rotating ring 5, and then rotate the rotating ring 5. At this time, the fixed column 9 rotates with the rotating ring 5, thereby driving one end of the fixing part 6 to move toward the center of the rotating ring 5 until the fixing part 6 contacts the side wall of the sample, and then the fixing part 6 clamps and fixes the sample to prevent the sample from shaking during testing.

[0029] An inner cavity is provided inside the workbench 2, and a ratchet 13 and a pawl 12 are located in the inner cavity, the ratchet 13 is rotatably connected to the inner cavity bottom wall, and the end of the pawl 12 away from the ratchet 13 is rotatably connected to the inner cavity bottom wall, the adjustment block 7 is located at the end of the pawl 12 close to the ratchet 13, and is fixedly connected to the pawl 12, the adjustment block 7 and the spring 10 are both located in the groove 8, the left end of the spring 10 is fixedly connected to the adjustment block 7, and the right end of the spring 10 is fixedly connected to the side wall of the groove 8. The provision of the adjustment block 7 and the spring 10 can ensure that the pawl 12 is always in contact with the side wall of the ratchet 13.

[0030] When the rotating ring 5 rotates clockwise, the ratchet 13 at the bottom end rotates clockwise with the rotating ring 5. At this time, the end of the pawl 12 that contacts the ratchet 13 will be bounced to the right by the force of the rotation of the ratchet 13. After the pawl 12 moves to the right, it will drive the adjusting block 7 to move to the right. The adjusting block 7 compresses the spring 10. After being compressed, the spring 10 will release the reaction force. After being subjected to the reaction force, the adjusting block 7 will move to the left to reset, thereby driving the pawl 12 to reset, thereby ensuring that the pawl 12 is always in contact with the side wall of the ratchet 13.

Claims

1. A hot air aging test box, comprising a box body (1), characterized in that: A base (14) is installed inside the box body (1), the top of the base (14) is connected to a workbench (2), the top of the base (14) is provided with a slide groove (11), the bottom of the workbench (2) is provided with a slide rail (4), the middle of the front end of the workbench (2) is connected to a reciprocating screw rod (3), the top of the workbench (2) is provided with a rotating ring (5), the bottom of the rotating ring (5) is connected to a ratchet (13), the side wall of the ratchet (13) is meshingly connected to a pawl (12), the top of the pawl (12) is connected to an adjusting block (7), the right side wall of the adjusting block (7) is connected to a spring (10), the right side of the top of the workbench (2) is provided with a groove (8), the top of the workbench (2) is connected to a fixing piece (6), and the top of the rotating ring (5) is provided with a fixing column (9).

2. A hot air aging test chamber according to claim 1, characterized in that: The slide rail (4) is located in the slide groove (11), and the workbench (2) is movably connected to the base (14) via the slide rail (4) and the slide groove (11).

3. A hot air aging test chamber according to claim 1, characterized in that: The rear end of the reciprocating screw rod (3) passes through the side wall of the box body (1) and is connected to a motor, and the reciprocating screw rod (3) is threadedly connected to the workbench (2).

4. A hot air aging test chamber according to claim 1, characterized in that: There are two fixing members (6) in total, which are respectively located at the upper right corner and the lower left corner of the top of the workbench (2). The length of the fixing members (6) is longer than the radius of the rotating ring (5).

5. The hot air aging test chamber according to claim 1, characterized in that: The fixing member (6) is rotatably connected to the workbench (2), a through slot is provided in the middle of the fixing member (6), and the fixing column (9) is located in the through slot.

6. A hot air aging test chamber according to claim 1, characterized in that: An inner cavity is provided inside the workbench (2), the ratchet (13) and the pawl (12) are located in the inner cavity, the ratchet (13) is rotatably connected to the bottom wall of the inner cavity, and the pawl (12) is rotatably connected to the bottom wall of the inner cavity at one end away from the ratchet (13).

7. The hot air aging test chamber according to claim 1, characterized in that: The adjusting block (7) is located at one end of the pawl (12) close to the ratchet wheel (13) and is fixedly connected to the pawl (12). The adjusting block (7) and the spring (10) are both located in the groove (8). The left end of the spring (10) is fixedly connected to the adjusting block (7), and the right end of the spring (10) is fixedly connected to the side wall of the groove (8).

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