Fixture special for glowing filament testing machine

Abstract

The utility model discloses a special fixture for a glowing filament testing machine, which comprises a bottom plate, a glowing filament is mounted on one side of the upper end face of the bottom plate, supporting columns are mounted at four end corners of the lower end face of the bottom plate, and fixing blocks are mounted at four end corners of the upper end face of the bottom plate. Threaded rods A are arranged on the opposite sides of the outer surfaces of every two fixing blocks, the outer surfaces of the threaded rods A are sleeved with threaded blocks A, transverse plates are installed on the opposite sides of the outer surfaces of the two threaded blocks A, vertical plates are installed on the front portion and the rear portion of the upper end face of each transverse plate, and vertical grooves are formed in the opposite sides of the outer surfaces of the two vertical plates. A threaded rod B is arranged on the inner side of the vertical groove, and the outer surface of the threaded rod B is sleeved with a threaded block B. According to the utility model, the height of an object to be tested can be adjusted, so that a burning point is adjusted, the use is convenient, a square object and a cylindrical object can be clamped, and the applicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glow wire test machines, and particularly to a special fixture for a glow wire test machine. Background Technique

[0002] The glow wire test machine is applicable to conduct ignition hazard tests and combustion performance tests on electrical and electronic products, household appliances and their materials, etc., to simulate the thermal stress caused by heat sources such as glow elements or overload resistors within a short period under equipment failure or overload conditions, so as to evaluate the ignition hazard of products.

[0003] Generally, in the transmission mechanism of the glow wire test machine, the movement of the moving trolley is usually driven by releasing a weight. When the weight is released, it will move freely under the action of gravity. In this way, it is impossible to accurately control the speed at which the test sample contacts the glow wire and the burning-in depth, which may damage the object to be tested and fail to achieve the purpose of the experiment.

[0004] The fixture of this device is usually fixed and can only fix one place for glowing each time. If you want to continue glowing the next place, you need to remove it from the fixture and re-fasten it to work. This is not conducive to working quickly and cannot adapt to the shapes of various objects. Therefore, it does not meet the existing requirements, and for this reason, we propose a special fixture for a glow wire test machine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a special fixture for a glow wire test machine, so as to solve the problems mentioned in the above background technique that the fixture of this device is usually fixed and can only fix one place for glowing each time. If you want to continue glowing the next place, you need to remove it from the fixture and re-fasten it to work. This is not conducive to working quickly and cannot adapt to the shapes of various objects.

[0006] To achieve the above object, the utility model provides the following technical solution: A special fixture for a glow wire tester, including a bottom plate, on one side of the upper end surface of the bottom plate, a glow wire is installed, at the four end corners of the lower end surface of the bottom plate, support columns are installed, at the four end corners of the upper end surface of the bottom plate, fixed blocks are installed, on the opposite sides of the outer surfaces of every two of the fixed blocks, a threaded rod A is arranged, on the outer surface of the threaded rod A, a threaded block A is sleeved, on the opposite sides of the outer surfaces of the two threaded blocks A, a cross plate is installed, at the front and back of the upper end surface of the cross plate, vertical plates are installed, on the opposite sides of the outer surfaces of the two vertical plates, a vertical groove is arranged, inside the vertical groove, a threaded rod B is arranged, on the outer surface of the threaded rod B, a threaded block B is sleeved, on the opposite sides of the outer surfaces of the two threaded blocks B, a connecting block is fixedly installed, on the opposite sides of the outer surfaces of the two connecting blocks, a lifting plate is arranged, on the front and back end faces of the lifting plate, pin shafts are installed, on both sides of the outer surface of the lifting plate, clamping devices are installed, the clamping device includes a U-shaped plate, on the outer surface of the U-shaped plate, a horizontal groove is arranged, in the middle of the horizontal groove, a connecting shaft is arranged, on the front and back end faces of the connecting shaft, screw rods are installed, on the outer surface of the screw rods, threaded plates are sleeved, on the outer surfaces of two of the threaded plates, square clamping plates are fixedly connected, and on the outer surfaces of the other two threaded plates, arc-shaped clamping plates are fixedly connected.

[0007] Preferably, on one side of the upper end surface of the bottom plate, a through groove is arranged, on one side of the outer surfaces of the two fixed blocks, a motor A is installed, the output end of the motor A is fixedly connected with a horizontal shaft, the other end of the horizontal shaft is fixedly connected with one end of the threaded rod A, and the other end of the threaded rod A is rotatably connected with the outer surface of the fixed block through a bearing.

[0008] Preferably, inside one of the connecting blocks, a motor B is installed through a motor cavity, the output end of the motor B is fixedly connected with a short shaft, the other end of the short shaft is fixedly connected with the front end face of one of the pin shafts, and the rear end face of the other pin shaft is rotatably connected with the outer surface of the other connecting block through a bearing.

[0009] Preferably, behind the horizontal groove, a motor C is installed through a cavity, the output end of the motor C is fixedly connected with a connecting rod, the front end face of the connecting rod is fixedly connected with the rear end face of one of the screw rods, the front end face of the other screw rod is rotatably connected with the inner wall of the horizontal groove through a bearing, and the thread directions of the two screw rods are opposite.

[0010] Preferably, on the upper end surface of the vertical plate, a motor D is installed, the output end of the motor D is fixedly connected with a vertical shaft, the lower end face of the vertical shaft is fixedly connected with the upper end face of the threaded rod B, and the lower end face of the threaded rod B is rotatably connected with the inner wall of the vertical groove through a bearing.

[0011] Preferably, rubber pads A are fixedly connected to one side of the outer surfaces of the two square clamping plates through an adhesive, and rubber pads B are fixedly connected to one side of the outer surfaces of the two arc-shaped clamping plates through an adhesive.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By providing a connecting block, a threaded block B, and a threaded rod B, by controlling the motor D, the motor D can drive the vertical shaft to rotate, thereby driving the threaded rod B to rotate. The threaded block B moves up and down on the outer surface of the threaded rod B, driving the clamping device to move up and down, thereby driving the article to be tested to move up and down, so as to adjust the burning point, without removing the article to be tested and re-clamping it.

[0014] 2. By providing a connecting block, a pin shaft, and a lifting plate, when clamping a rectangular article, the switch of the motor C can be controlled to drive the lead screw to rotate. The two threaded plates move towards the connecting shaft at the same time, driving the square clamping plates to approach each other and clamping the rectangular article stably. When clamping a cylindrical article, by controlling the switch of the motor B, the motor B drives the short shaft to rotate, thereby driving the pin shaft to rotate, and the lifting plate rotates 180°. The arc-shaped clamping plates can be used to clamp the cylindrical article. The utility model can clamp square articles and cylindrical articles, improving the applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2 is a top cross-sectional view of the whole of the present utility model;

[0017] Figure 3 is a partial structural diagram of the clamping device of the present utility model.

[0018] In the figure: 1. bottom plate; 2. fixed block; 3. through groove; 4. vertical plate; 5. threaded rod A; 6. threaded block A; 7. cross plate; 8. vertical groove; 9. lifting plate; 10. clamping device; 1001. U-shaped plate; 1002. square clamping plate; 1003. horizontal groove; 1004. threaded plate; 1005. lead screw; 1006. arc-shaped clamping plate; 1007. connecting shaft; 11. threaded block B; 12. connecting block; 13. pin shaft; 14. threaded rod B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] The motor A (model YS7134), motor B (model 68KTYZ), motor C (model 68KTYZ), and motor D (model YS7134) mentioned in the present utility model can all be obtained through market procurement or private customization.

[0021] Please refer to Figures 1 to 3 , an embodiment provided by the present utility model: a special fixture for a glow wire test machine, including a bottom plate 1. One side of the upper end surface of the bottom plate 1 is equipped with a glow wire. Support columns are installed at the four end corners of the lower end surface of the bottom plate 1. Fixing blocks 2 are installed at the four end corners of the upper end surface of the bottom plate 1. On the opposite sides of the outer surfaces of every two fixing blocks 2, there is a threaded rod A5. A threaded block A6 is sleeved on the outer surface of the threaded rod A5. On the opposite sides of the outer surfaces of the two threaded blocks A6, a cross plate 7 is installed. Vertical plates 4 are installed at the front and rear of the upper end surface of the cross plate 7. On the opposite sides of the outer surfaces of the two vertical plates 4, there is a vertical groove 8. Inside the vertical groove 8, there is a threaded rod B14. A threaded block B11 is sleeved on the outer surface of the threaded rod B14. On the opposite sides of the outer surfaces of the two threaded blocks B11, a connecting block 12 is fixedly installed. On the opposite sides of the outer surfaces of the two connecting blocks 12, there is a lifting plate 9. Pin shafts 13 are installed at the front and rear end faces of the lifting plate 9. Clamping devices 10 are installed on both sides of the outer surface of the lifting plate 9. The clamping device 10 includes a U-shaped plate 1001. A transverse groove 1003 is arranged on the outer surface of the U-shaped plate 1001. A connecting shaft 1007 is arranged in the middle of the transverse groove 1003. Lead screws 1005 are installed at the front and rear end faces of the connecting shaft 1007. Threaded plates 1004 are sleeved on the outer surfaces of the lead screws 1005. Square clamping plates 1002 are fixedly connected to the outer surfaces of two of the threaded plates 1004, and arc-shaped clamping plates 1006 are fixedly connected to the outer surfaces of the other two threaded plates 1004.

[0022] One side of the upper end surface of the bottom plate 1 is provided with a through groove 3. A motor A is installed on one side of the outer surfaces of the two fixing blocks 2. The output end of the motor A is fixedly connected to a transverse shaft. The other end of the transverse shaft is fixedly connected to one end of the threaded rod A5. The other end of the threaded rod A5 is rotatably connected to the outer surface of the fixing block 2 through a bearing. When the motor A works, it drives the transverse shaft to rotate, thereby driving the threaded rod A5 to rotate, improving the rotation stability of the threaded rod A5.

[0023] Inside one of the connecting blocks 12, a motor B is installed through a motor cavity. The output end of the motor B is fixedly connected to a short shaft. The other end of the short shaft is fixedly connected to the front end surface of one of the pin shafts 13. The rear end surface of the other pin shaft 13 is rotatably connected to the outer surface of the other connecting block 12 through a bearing. When the motor B works, it can drive the short shaft to rotate, thereby driving the pin shaft 13 to rotate, and further driving the lifting plate 9 to rotate.

[0024] Behind the transverse groove 1003, a motor C is installed through a cavity. The output end of the motor C is fixedly connected to a connecting rod. The front end face of the connecting rod is fixedly connected to the rear end face of one of the lead screws 1005. The front end face of the other lead screw 1005 is rotatably connected to the inner wall of the transverse groove 1003 through a bearing. The thread directions of the two lead screws 1005 are opposite. When the motor C works, it can drive the connecting rod to rotate, thereby driving the lead screw 1005 to rotate, improving the stability of the rotation of the lead screw 1005.

[0025] On the upper end face of the vertical plate 4, a motor D is installed. The output end of the motor D is fixedly connected to a vertical shaft. The lower end face of the vertical shaft is fixedly connected to the upper end face of the threaded rod B14. The lower end face of the threaded rod B14 is rotatably connected to the inner wall of the vertical groove 8 through a bearing. When the motor D works, it drives the vertical shaft to rotate, thereby driving the threaded rod B14 to rotate, improving the stability of the rotation of the threaded rod B14.

[0026] On the opposite sides of the outer surfaces of the two square clamping plates 1002, rubber pads A are fixedly connected through an adhesive. On the opposite sides of the outer surfaces of the two arc-shaped clamping plates 1006, rubber pads B are fixedly connected through an adhesive, improving the stability of clamping the article to be tested.

[0027] When the special fixture for the glow wire test machine is in use, first turn on the power supply. When it is necessary to clamp a rectangular article, the switch of the motor C can be controlled to drive the lead screw 1005 to rotate. The two threaded plates 1004 move towards the direction close to the connecting shaft 1007 at the same time, driving the square clamping plates 1002 to approach each other and clamping the rectangular article stably. When it is necessary to clamp a cylindrical article, the switch of the motor B is controlled. The motor B works to drive the short shaft to rotate, thereby driving the pin shaft 13 to rotate, and the lifting plate 9 rotates 180°. The arc-shaped clamping plate 1006 can be used to clamp the cylindrical article. And by controlling the motor D, the motor D works to drive the vertical shaft to rotate, thereby driving the threaded rod B14 to rotate. The threaded block B11 moves up and down on the outer surface of the threaded rod B14, driving the clamping device 10 to move up and down, thereby driving the article to be tested to move up and down. The utility model can adjust the height of the article to be tested, thereby adjusting the glow point, which is convenient to use, and can clamp square articles and cylindrical articles, improving the applicability.

[0028] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A special fixture for a glow wire testing machine, comprising a bottom plate (1), on one side of the upper end face of the bottom plate (1), a glow wire is installed, and support columns are installed at the four end corners of the lower end face of the bottom plate (1), characterized in that: Four end corners of the upper end surface of the bottom plate (1) are all provided with fixing blocks (2). On one side of the outer surfaces of every two fixing blocks (2) that face each other, there is a threaded rod A (5). A threaded block A (6) is sleeved on the outer surface of the threaded rod A (5). On one side of the outer surfaces of the two threaded blocks A (6) that face each other, a cross plate (7) is installed. On the front and back of the upper end surface of the cross plate (7), vertical plates (4) are installed. On one side of the outer surfaces of the two vertical plates (4) that face each other, there is a vertical groove (8). Inside the vertical groove (8), there is a threaded rod B (14). A threaded block B (11) is sleeved on the outer surface of the threaded rod B (14). On one side of the outer surfaces of the two threaded blocks B (11) that face each other, a connecting block (12) is fixedly installed. On one side of the outer surfaces of the two connecting blocks (12) that face each other, there is a lifting plate (9). On the front and back end faces of the lifting plate (9), there are pin shafts (13). On both sides of the outer surface of the lifting plate (9), clamping devices (10) are installed. The clamping device (10) includes a U-shaped plate (1001). On the outer surface of the U-shaped plate (1001), there is a horizontal groove (1003). In the middle of the horizontal groove (1003), there is a connecting shaft (1007). On the front and back end faces of the connecting shaft (1007), there are screw rods (1005). A threaded plate (1004) is sleeved on the outer surface of the screw rod (1005). On the outer surface of two of the threaded plates (1004), square clamping plates (1002) are fixedly connected. On the outer surface of the other two threaded plates (1004), arc-shaped clamping plates (1006) are fixedly connected.

2. The special fixture for a glow wire tester according to claim 1, characterized in that: On one side of the upper end surface of the bottom plate (1), there is a through groove (3). On one side of the outer surfaces of the two fixing blocks (2), a motor A is installed. The output end of the motor A is fixedly connected with a horizontal shaft. The other end of the horizontal shaft is fixedly connected with one end of the threaded rod A (5). The other end of the threaded rod A (5) is rotationally connected with the outer surface of the fixing block (2) through a bearing.

3. The special fixture for a glow wire tester according to claim 1, characterized in that: Inside one of the connecting blocks (12), a motor B is installed through a motor cavity. The output end of the motor B is fixedly connected with a short shaft. The other end of the short shaft is fixedly connected with the front end face of one of the pin shafts (13). The rear end face of the other pin shaft (13) is rotationally connected with the outer surface of the other connecting block (12) through a bearing.

4. The special fixture for a glow wire tester according to claim 1, characterized in that: Behind the horizontal groove (1003), a motor C is installed through a cavity. The output end of the motor C is fixedly connected with a connecting rod. The front end face of the connecting rod is fixedly connected with the rear end face of one of the screw rods (1005). The front end face of the other screw rod (1005) is rotationally connected with the inner wall of the horizontal groove (1003) through a bearing, and the thread directions of the two screw rods (1005) are opposite.

5. The special fixture for a glow wire tester according to claim 1, characterized in that: On the upper end surface of the vertical plate (4), a motor D is installed. The output end of the motor D is fixedly connected with a vertical shaft. The lower end face of the vertical shaft is fixedly connected with the upper end face of the threaded rod B (14). The lower end face of the threaded rod B (14) is rotationally connected with the inner wall of the vertical groove (8) through a bearing.

6. The special fixture for a glow wire tester according to claim 1, wherein: On one side of the outer surfaces of the two square clamping plates (1002) facing each other, a rubber pad A is fixedly connected by an adhesive. On one side of the outer surfaces of the two arc-shaped clamping plates (1006) facing each other, a rubber pad B is fixedly connected by an adhesive.

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