Dotting mechanism for high-temperature-resistant thermocouple wire

Abstract

The utility model discloses a dotting mechanism of a high temperature resistant thermocouple wire, which belongs to the thermocouple wire dotting field, and comprises a workbench, two sides of the workbench are respectively provided with an installation cylinder and an installation seat, a sliding rod is arranged in the installation cylinder, and a spring located between the installation cylinder and the sliding rod is sleeved on the sliding rod. A graphite head is mounted at one end, close to the mounting seat, of the sliding rod; according to the thermocouple dotting device, the installation cylinder, the sliding rod, the spring and the pull rod are arranged, and the meshing relation between the sector gear plate on the pull rod and the tooth set on the sliding rod is utilized, so that the sliding rod can be driven to slide in the installation cylinder only by shifting the pull rod, the graphite head is driven to move towards two metal wires of a thermocouple, and dotting of the two metal wires of the thermocouple is achieved; afterwards, only the pull rod needs to be loosened, the sliding rod can automatically reset under the elastic force effect of the spring, the next dotting operation is facilitated, an operator can keep a safe distance from the electrified structure in the whole process, and accidents can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to thermocouple wire dotting, in particular to a high temperature resistant thermocouple wire dotting mechanism. Background Art

[0002] A thermocouple is a contact temperature measuring instrument that uses the thermoelectric effect to measure temperature. The thermocouple contains two metal wires of different components that form a closed loop. The ends of the two metal wires need to be welded into a spherical junction. During the use of the thermocouple, the thermocouple head often breaks, and in this case you need to weld the thermocouple wires yourself.

[0003] Generally, when welding two metal wires of a thermocouple, the thermocouple metal wire and the graphite block need to be placed on two electrode clamps of the welding machine respectively, and the operator needs to hold the two electrode clamps of the welding machine to perform welding. If the operator does not operate properly during this process, there is a risk of electric shock. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a dot-marking mechanism for a high-temperature resistant thermocouple wire.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a dotting mechanism for high temperature resistant thermocouple wires, comprising a workbench, a mounting tube and a mounting seat are respectively arranged on two sides of the workbench, a sliding rod is arranged in the mounting tube, and a spring is sleeved on the sliding rod and is located between the mounting tube and the sliding rod, a graphite head is arranged on one end of the sliding rod close to the mounting seat, and a pulling rod which is rotatable and matched with the sliding rod is arranged on the end of the mounting tube away from the graphite head, a threaded rod is rotatably arranged on the mounting seat, and two sliding blocks which slide in the mounting seat are threadedly sleeved on the threaded rod, and a wire barrel is arranged between the two sliding blocks.

[0007] As a preferred technical solution of the utility model, a retaining ring is provided on the sliding rod, one end of the spring is fixed on the mounting tube, the other end of the spring is fixed on the retaining ring, three claws are rotatably provided on one end of the sliding rod, and the graphite head is fixed on the sliding rod through the three claws.

[0008] As a preferred technical solution of the utility model, a sector gear plate is provided at the lower end of the pull rod, and a tooth group meshing with the sector gear plate is provided at one end of the slide rod close to the pull rod.

[0009] As a preferred technical solution of the utility model, a pair of clamps are provided at one end of the wire barrel, a wire groove is provided inside the wire barrel, and a spacer for separating the wire groove is provided inside the wire barrel.

[0010] As a preferred technical solution of the utility model, the mounting seat is fixedly connected to a mounting frame on a side wall close to the mounting barrel, a bidirectional screw is rotatably connected to the mounting frame, and screw barrels are threadedly sleeved on threads at both ends of the bidirectional screw.

[0011] As a preferred technical solution of the utility model, the two screw barrels are slid on a side cross bar of the mounting frame, and the two screw barrels are provided with vertical clamping rods, and the positions of the upper ends of the two clamping rods correspond to the wire drums.

[0012] As a preferred technical solution of the utility model, a welding machine with an external power supply is arranged on one side of the workbench, and electrode clamps are electrically connected to both pole terminals of the welding machine, and the two electrode clamps are clamped on the graphite head and the clamping piece respectively.

[0013] The beneficial effects of the utility model are:

[0014] 1. The dotting mechanism of the high-temperature resistant thermocouple wire is provided with an installation tube, a slide rod, a spring and a pull rod, and utilizes the meshing relationship between the fan-shaped gear plate on the pull rod and the tooth group on the slide rod, so that the slide rod can be driven to slide in the installation tube by simply turning the pull rod, thereby moving the graphite head toward the two metal wires of the thermocouple, so as to realize the dotting of the two metal wires of the thermocouple. After that, only the pull rod needs to be loosened, and the slide rod will automatically reset under the elastic force of the spring, which is convenient for the next dotting operation. During the whole process, the operator will keep a safe distance from the live structure, which can effectively avoid accidents.

[0015] 2. The dotting mechanism of the high temperature resistant thermocouple wire can separate the two metal wires of the thermocouple inside the wire barrel due to the special shape of the inside of the wire barrel, so as to prevent the two metal wires of the thermocouple from interlacing and touching each other, and the threaded fit between the threaded rod and the slider can be used to adjust the position of the wire barrel, and control the two thermocouple metal wires on the wire barrel to approach the graphite head so that the graphite head can dot the two metal wires.

[0016] 3. The dotting mechanism of the high temperature resistant thermocouple wire is provided with a bidirectional screw and a screw barrel. By utilizing the thread cooperation of the bidirectional screw and the two screw barrels, the two screw barrels can be controlled to approach or move away from each other by changing the rotation direction of the bidirectional screw, so that the two clamping rods can clamp the two metal wires protruding from the wire barrel, thereby improving the stability of the dotting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of a dot-marking mechanism for a high-temperature resistant thermocouple wire of the utility model;

[0019] Figure 2 It is a schematic cross-sectional structure diagram of an installation tube of a dot-marking mechanism for a high-temperature-resistant thermocouple wire of the utility model;

[0020] Figure 3 It is a schematic cross-sectional structure diagram of a mounting seat of a dot-marking mechanism for a high-temperature-resistant thermocouple wire according to the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of a wire barrel of a dotting mechanism for a high-temperature resistant thermocouple wire of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of a mounting frame and a bidirectional screw connection structure of a dot-marking mechanism for a high-temperature resistant thermocouple wire.

[0023] In the figure: 1. workbench; 2. mounting cylinder; 3. slide rod; 4. spring; 5. graphite head; 6. pull rod; 7. mounting seat; 8. threaded rod; 9. slider; 10. wire drum; 11. retaining ring; 12. claw head; 13. sector gear plate; 14. tooth group; 15. clamping piece; 16. spacer; 17. mounting frame; 18. bidirectional screw; 19. screw barrel; 20. clamping rod; 21. welding machine; 22. electrode clamp. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model is a dotting mechanism for high-temperature resistant thermocouple wires, comprising a workbench 1, with a mounting tube 2 and a mounting seat 7 respectively arranged on both sides of the workbench 1, a sliding slide rod 3 is arranged in the mounting tube 2, and a spring 4 located between the mounting tube 2 and the slide rod 3 is sleeved on the slide rod 3, a graphite head 5 is installed on the end of the slide rod 3 close to the mounting seat 7, and a rotatable pull rod 6 matched with the slide rod 3 is arranged on the end of the mounting tube 2 away from the graphite head 5, the mounting seat 7 is rotatably provided with a threaded rod 8, and two sliders 9 sliding in the mounting seat 7 are threadedly sleeved on the threaded rod 8, and a wire barrel 10 is installed between the two sliders 9.

[0026] Among them, a retaining ring 11 is provided on the slide rod 3, one end of the spring 4 is fixed on the mounting tube 2, and the other end of the spring 4 is fixed on the retaining ring 11. Three claws 12 are rotatably provided on one end of the slide rod 3, and the graphite head 5 is fixed on the slide rod 3 through the three claws 12. By setting the retaining ring 11, the slide rod 3 can squeeze the spring 4 when sliding, which is beneficial to resetting the slide rod 3 with the help of the elastic force of the spring 4. By setting the claws 12, the disassembly and assembly of the graphite head 5 on the slide rod 3 is facilitated.

[0027] A sector gear plate 13 is provided at the lower end of the pull rod 6, and a tooth group 14 meshing with the sector gear plate 13 is provided on the end of the slide rod 3 close to the pull rod 6. By setting the sector gear plate 13 and the tooth group 14 and utilizing the meshing relationship between the sector gear plate 13 and the tooth group 14, when the pull rod 6 is moved, the slide rod 3 can be driven to slide in the mounting tube 2.

[0028] A pair of clips 15 are provided at one end of the wire barrel 10, and a wire groove is provided inside the wire barrel 10, and a spacer 16 for separating the wire groove is provided inside the wire barrel 10. By providing the spacer 16, the two metal wires of the thermocouple can be separated inside the wire barrel 10 to prevent the two metal wires of the thermocouple from interlacing and touching each other.

[0029] The mounting seat 7 is fixedly connected to a mounting frame 17 on one side wall close to the mounting cylinder 2, and a bidirectional screw 18 is rotatably connected to the mounting frame 17, and screw barrels 19 are threadedly sleeved on the threads at both ends of the bidirectional screw 18. By arranging the bidirectional screw 18 and the screw barrels 19 and utilizing the thread cooperation of the bidirectional screw 18 and the two screw barrels 19, the two screw barrels 19 can be controlled to approach or move away from each other by changing the rotation direction of the bidirectional screw 18.

[0030] Both screw barrels 19 slide on a side cross bar of the mounting frame 17, and both screw barrels 19 are provided with vertical clamping rods 20, and the positions of the upper ends of the two clamping rods 20 correspond to the wire barrel 10. By providing the clamping rods 20, the two metal wires of the thermocouple protruding from the wire barrel 10 can be clamped.

[0031] A welding machine 21 with an external power supply is arranged on one side of the workbench 1, and electrode clamps 22 are electrically connected to both terminals of the welding machine 21, and the two electrode clamps 22 are clamped on the graphite head 5 and the clip 15 respectively. By setting the welding machine 21 and the electrode clamps 22, power can be provided for the two metal wires of the welding thermocouple.

[0032] During operation, the two metal wires of the thermocouple are placed in the wire barrel 10 and are allowed to protrude from the wire barrel 10. Due to the special shape of the inside of the wire barrel 10, the two metal wires of the thermocouple can be separated inside the wire barrel 10 to prevent the two metal wires of the thermocouple from interlacing and touching each other. After the two metal wires protrude from the wire barrel 10, the threaded rod 8 is rotated, and the threaded fit between the threaded rod 8 and the slider 9 is used to control the two thermocouple metal wires on the wire barrel 10 to approach the graphite head 5. Then, the bidirectional screw 18 is rotated, and the threaded fit between the bidirectional screw 18 and the two screw barrels 19 is used to make the two clamping rods 20 clamp the two metal wires protruding from the wire barrel 10.

[0033] Next, use scissors to cut the two metal wires flat for dotting, and then clamp the two electrode clamps 22 on the graphite head 5 and the clamping piece 15 respectively. The electrode clamp 22 clamped on the clamping piece 15 will touch the two metal wires on the wire barrel 10. Finally, move the pull rod 6, and use the meshing relationship between the fan-shaped gear plate 13 on the pull rod 6 and the tooth group 14 on the slide rod 3, so that only by moving the pull rod 6 can the slide rod 3 slide in the installation tube 2, thereby moving the graphite head 5 toward the two metal wires of the thermocouple, so as to realize the dotting of the two metal wires of the thermocouple. After that, you only need to loosen the pull rod 6, and the slide rod 3 will automatically reset under the elastic force of the spring 4, which is convenient for the next dotting operation. During the whole process, the operator will keep a safe distance from the live structure, which can effectively avoid accidents.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dot-marking mechanism for a high temperature resistant thermocouple wire, characterized in that: The invention comprises a workbench (1), wherein a mounting cylinder (2) and a mounting seat (7) are respectively arranged on both sides of the workbench (1), a sliding slide rod (3) is arranged in the mounting cylinder (2), and a spring (4) is sleeved on the slide rod (3) and is located between the mounting cylinder (2) and the slide rod (3), a graphite head (5) is installed on the end of the slide rod (3) close to the mounting seat (7), and a pull rod (6) that is rotatable and cooperates with the slide rod (3) is arranged on the end of the mounting cylinder (2) away from the graphite head (5), the mounting seat (7) is rotatably provided with a threaded rod (8), and two sliders (9) that slide in the mounting seat (7) are threadedly sleeved on the threaded rod (8), and a wire drum (10) is installed between the two sliders (9).

2. The dot-marking mechanism for a high temperature resistant thermocouple wire according to claim 1, characterized in that: The slide rod (3) is provided with a retaining ring (11), one end of the spring (4) is fixed on the mounting tube (2), the other end of the spring (4) is fixed on the retaining ring (11), one end of the slide rod (3) is rotatably provided with three claws (12), and the graphite head (5) is fixed on the slide rod (3) through the three claws (12).

3. The dot-marking mechanism for a high temperature resistant thermocouple wire according to claim 1, characterized in that: The lower end of the pull rod (6) is provided with a sector gear plate (13), and the end of the slide rod (3) close to the pull rod (6) is provided with a tooth group (14) meshing with the sector gear plate (13).

4. The dot-marking mechanism for a high temperature resistant thermocouple wire according to claim 1, characterized in that: A pair of clamping pieces (15) are arranged at one end of the wire barrel (10), a wire groove is arranged inside the wire barrel (10), and a spacer (16) for separating the wire groove is arranged inside the wire barrel (10).

5. The dot-marking mechanism for high temperature resistant thermocouple wire according to claim 1, characterized in that: The mounting seat (7) is fixedly connected to a mounting frame (17) on a side wall close to the mounting cylinder (2); a bidirectional screw rod (18) is rotatably connected to the mounting frame (17); and screw cylinders (19) are threadedly sleeved on threads at both ends of the bidirectional screw rod (18).

6. The dot-marking mechanism for high temperature resistant thermocouple wire according to claim 5, characterized in that: The two screw barrels (19) are slid on a side crossbar of the mounting frame (17), and vertical clamping rods (20) are arranged on the two screw barrels (19), and the positions of the upper ends of the two clamping rods (20) correspond to the wire barrel (10).

7. The dot-marking mechanism for a high temperature resistant thermocouple wire according to claim 1, characterized in that: A welding machine (21) with an external power supply is arranged on one side of the workbench (1), and electrode clamps (22) are electrically connected to both terminals of the welding machine (21), and the two electrode clamps (22) are clamped on the graphite head (5) and the clamping piece (15) respectively.

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