Automatic calibration device for thermocouple compensation lead

Abstract

The invention relates to the technical field of compensation wire calibration, in particular to a thermocouple compensation wire automatic calibration device which comprises a connecting wire and a wire, a shell is arranged at the left end of the connecting wire, two sets of connecting pipes are connected to the center position of the shell, and locking assemblies are arranged at the center positions of the two sets of connecting pipes. A wire is arranged on the left side of the shell, and four sets of fixing assemblies are arranged in the shell. The locking assembly comprises an adjusting ring, a first limiting ring, an inner gear, a first connecting rod, a small gear and a fixing block. Through the arrangement of the locking assembly, a connecting line and a wire are inserted into a connecting pipe, an adjusting ring is rotated, an inner gear is engaged with a pinion, so that a first connecting rod drives a fixing block to rotate, the locking assembly and the wire are attached, and then the connecting pipe is rotated while the adjusting ring is pressed through a second limiting ring; the fastening performance between the locking assembly and the wire is enhanced, the structure is simple, and operation is convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of compensation wire calibration, in particular to an automatic calibration device for a thermocouple compensation wire. Background Art

[0002] Thermocouple compensation wire is a pair of metal wires with different chemical compositions, which have the same temperature thermoelectric potential relationship with the thermocouple they are connected to within a certain temperature range. Its function is to extend the cold end of the thermocouple to a specific position. Since there are many types of thermocouples, and there are many types of wires corresponding to their compensation, in order to prevent the influence on temperature conduction, it is necessary to select the same type of wire as the thermocouple for compensation when using the compensation wire. In actual work, the connection between thermocouples and compensation wires is still mostly done manually, which involves two tasks: selection and connection. Therefore, the connection efficiency is low, and welding is used when connecting, which is harmful to the human body.

[0003] After searching, the patent application number is (202121912712.2), which discloses "a thermocouple compensation wire connection device", including a shell, a fixed groove is provided on the front end face of the shell, and a mounting groove is provided inside the shell, the fixed groove extends through one end of the shell to the mounting groove, a short shaft is fixedly provided on the upper side of the inner wall of the fixed groove, and the two ends of the short shaft are respectively fixedly connected to the two ends of the inner wall of the fixed groove, and a rotating fixed block is movably sleeved on the outer surface of the short shaft, and a wire fixing head is fixedly provided on the front end face of the rotating fixed block, and a fixed shaft is fixedly provided in the middle position of the upper end face of the rotating fixed block, and fixed brackets are fixedly provided at both ends of the lower side of the inner wall of the fixed groove, and an insertion port is provided in the middle position of the lower end face of the shell, and the insertion port extends through one end of the shell to the mounting groove, and through ports are provided at both ends of the inner wall of the mounting groove. Through this new wire connection device, this device can install the compensation wire more simply and conveniently, thereby improving the work efficiency of the staff; However, the above device has the following problems: the compensation wire needs to be bent when connected, which shortens the length of the compensation wire, affects the normal use of the thermocouple, and cannot ensure the tightness of the connection. For this reason, we propose a thermocouple compensation wire automatic calibration device to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an automatic calibration device for thermocouple compensation wires to solve the problem that when the compensation wires proposed in the above background technology are connected, the length of the compensation wires is shortened, affecting the normal use of the thermocouples and failing to ensure the tightness of the connection.

[0005] To achieve the above object, the present invention provides the following technical solution: a thermocouple compensation wire automatic calibration device, comprising a connecting wire and a wire, a shell is provided at the left end of the connecting wire, two groups of connecting pipes are connected to the center of the shell, and locking components are provided at the center of the two groups of connecting pipes, a wire is provided on the left side of the shell, and four groups of fixing components are provided in the shell; The locking assembly includes an adjusting ring, a first limiting ring, an internal gear, a first connecting rod, a pinion and a fixing block. An adjusting ring is arranged inside the connecting tube, two groups of first limiting rings are arranged on the outside of the adjusting ring, the inner side of the adjusting ring is connected to the internal gear, six groups of first connecting rods are arranged inside the connecting tube, pinions are arranged at the top ends of the six groups of first connecting rods, and six groups of fixing blocks are respectively arranged at the other ends of the six groups of first connecting rods.

[0006] Preferably, the fixing assembly includes a slider, a fixing groove, a spring, a second connecting rod and a fixing sleeve, four groups of sliders are symmetrically arranged in the outer shell, two groups of fixing grooves are symmetrically opened in the slider, the second connecting rod is movably connected in the fixing groove, a spring is arranged on the inner wall of the fixing groove, two ends of the spring are respectively abutted against the second connecting rod and the inner wall of the fixing groove, the outer end of the second connecting rod is fixedly connected to the fixing sleeve, the inner end of the fixing sleeve is conical, and the center of the fixing sleeve is consistent with the connecting pipe.

[0007] Preferably, the two ends of the first connecting rod are respectively rotatably connected to the inner wall of the connecting tube, a pinion is fixedly connected to the outer side of the first connecting rod, the inner gear and the pinion are meshed with each other, two groups of first limiting rings are fixedly connected to the left and right sides of the adjusting ring, the adjusting ring is rotatably connected to the connecting tube through the first limiting ring, the fixed block is fixedly connected to the first connecting rod, and the six groups of fixed blocks are blade-shaped.

[0008] Preferably, an adjustment component is provided in the shell, and the adjustment component includes a movable groove, a third connecting rod and a pull rod. Four groups of movable grooves are opened in the shell, the slider is concave-shaped, the movable groove is T-shaped, and is adapted to the slider. The top of the slider is fixedly connected to the third connecting rod, and the upper end of the third connecting rod is located on the surface of the shell and is fixedly connected to the pull rod.

[0009] Preferably, second limiting rings are fixedly connected to the left and right sides of the connecting pipe, a sliding groove matched with the second limiting ring is provided in the outer shell, and the connecting pipe is rotatably connected to the outer shell through the second limiting ring.

[0010] Preferably, four groups of card slots are provided in the shell, and latches are inserted into the card slots.

[0011] Preferably, four groups of positive and negative pole markings are provided on the surface of the shell, and the positive and negative pole markings are located on the left and right sides of the connecting tube.

[0012] Preferably, the surface of the shell is provided with scale lines, and the scale lines are located outside the movable groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention inserts the connecting wire and the conducting wire into the connecting tube by setting the locking assembly, rotates the adjusting ring, and meshes the inner gear and the pinion gear with each other, so that the first connecting rod drives the fixing block to rotate, fits the locking assembly and the conducting wire, and then rotates the connecting tube while pressing the adjusting ring through the second limiting ring, so that the locking assembly and the conducting wire are entangled, thereby enhancing the fastening between the two. The structure is simple and the operation is convenient.

[0014] 2. The present invention sets a fixing component. When the locking component or the wire is inserted into the housing, the fixing sleeves on both sides are pushed and guided. The locking component or the wire is fixed under the action of the spring and the second connecting rod. Automatic calibration can be achieved during insertion, placing it at the center of the connecting tube for easy connection.

[0015] 3. The present invention adjusts the setting of the components. When different types of compensation wires are connected, the lengths of the connecting parts are inconsistent. The slider can be moved to a suitable position by a pull rod so that the wires overlap each other, and the slider can be limited by the card slot and the pin to improve the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic front view of the structure of the present invention; Figure 2 It is a right side cross-sectional schematic diagram of the structure of the present invention; Figure 3 It is a structural schematic diagram of the adjustment component of the present invention; Figure 4 For the present invention Figure 2 A is a partial enlarged schematic diagram; Figure 5 For the present invention Figure 3 A partial enlarged schematic diagram of B in the figure.

[0018] In the figure: 1. connecting wire; 2. outer shell; 3. connecting tube; 4. locking assembly; 41. adjusting ring; 42. first limiting ring; 43. internal gear; 44. first connecting rod; 45. pinion; 46. fixing block; 5. wire; 6. fixing assembly; 61. slider; 62. fixing groove; 63. spring; 64. second connecting rod; 65. fixing sleeve; 7. adjusting assembly; 71. movable groove; 72. third connecting rod; 73. pull rod; 8. second limiting ring; 9. slot; 10. latch; 11. positive and negative pole marking; 12. scale line. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-5 , an embodiment of the present invention: an automatic calibration device for thermocouple compensation wires, comprising a connecting wire 1 and a wire 5, a shell 2 is provided at the left end of the connecting wire 1, two groups of connecting pipes 3 are connected to the center of the shell 2, and locking components 4 are provided at the center of the two groups of connecting pipes 3, a wire 5 is provided on the left side of the shell 2, and four groups of fixing components 6 are provided in the shell 2; The locking assembly 4 includes an adjusting ring 41, a first limiting ring 42, an internal gear 43, a first connecting rod 44, a pinion 45 and a fixing block 46. The adjusting ring 41 is arranged inside the connecting tube 3, two groups of first limiting rings 42 are arranged outside the adjusting ring 41, the inner side of the adjusting ring 41 is connected to the internal gear 43, six groups of first connecting rods 44 are arranged inside the connecting tube 3, the tops of the six groups of first connecting rods 44 are all provided with pinions 45, and the other ends of the six groups of first connecting rods 44 are respectively provided with six groups of fixing blocks 46; The device solves the problem that when the compensation wire is connected, the length of the compensation wire is shortened, affecting the normal use of the thermocouple and failing to ensure the tightness of the connection by arranging the locking component 4 and the fixing component 6.

[0021] Furthermore, the fixing assembly 6 includes a slider 61, a fixing groove 62, a spring 63, a second connecting rod 64 and a fixing sleeve 65. Four groups of sliders 61 are symmetrically arranged in the housing 2. Two groups of fixing grooves 62 are symmetrically opened in the slider 61. The second connecting rod 64 is movably connected in the fixing groove 62. The inner wall of the fixing groove 62 is provided with a spring 63. The two ends of the spring 63 are respectively against the second connecting rod 64 and the inner wall of the fixing groove 62. The outer end of the second connecting rod 64 is fixedly connected with a fixing sleeve 65. The inner end of the fixing sleeve 65 is conical, and the center of the fixing sleeve 65 is consistent with the connecting pipe 3. Figure 5 As shown, the structure is used to contact the fixing sleeve 65 when the conductor 5 or the connecting line 1 is inserted through the fixing component 6, and is slidably connected to the slider 61 through the second connecting rod 64, pushing the fixing sleeve 65 to move to both sides, so that the spring 63 is squeezed by the second connecting rod 64 and deformed. After being inserted into the appropriate position, the connecting line 1 or the conductor 5 is fixed and guided under the rebound action of the spring 63 so that it is located in the center position.

[0022] Furthermore, both ends of the first connecting rod 44 are rotatably connected to the inner wall of the connecting tube 3, a pinion 45 is fixedly connected to the outer side of the first connecting rod 44, the inner gear 43 and the pinion 45 are meshed with each other, two sets of first limiting rings 42 are fixedly connected to the left and right sides of the adjusting ring 41, the adjusting ring 41 is rotatably connected to the connecting tube 3 through the first limiting rings 42, the fixing blocks 46 are fixedly connected to the first connecting rod 44, and the six sets of fixing blocks 46 are blade-shaped. Figure 4 As shown, the structure is used to insert the locking assembly 4 and the wire 5 into the connecting tube 3 through the setting of the locking assembly 4, and then rotate the adjusting ring 41, so that the inner gear 43 and the pinion 45 are meshed with each other, driving the first connecting rod 44 and the fixing block 46 to rotate inward, thereby clamping and fixing the connecting part of the connecting line 1 and the wire 5.

[0023] Furthermore, an adjustment assembly 7 is provided in the housing 2, and the adjustment assembly 7 includes a movable groove 71, a third connecting rod 72 and a pull rod 73. Four sets of movable grooves 71 are provided in the housing 2, the slider 61 is concave-shaped, the movable grooves 71 are T-shaped, and are adapted to the slider 61. The top of the slider 61 is fixedly connected to the third connecting rod 72, and the upper end of the third connecting rod 72 is located on the surface of the housing 2 and is fixedly connected to the pull rod 73. Figure 3 As shown, the structure is used to drive the slider 61 to slide toward the center position along the movable groove 71 by pulling the pull rod 73, so that the connecting parts of the connecting line 1 and the conductive wire 5 are fully overlapped to facilitate the connection.

[0024] Furthermore, the left and right sides of the connecting pipe 3 are fixedly connected with second limiting rings 8, and a slide groove adapted to the second limiting rings 8 is provided in the outer shell 2, and the connecting pipe 3 is rotatably connected to the outer shell 2 through the second limiting rings 8. Figure 3As shown, the structure is used to fix the connection between the connecting wire 1 and the conducting wire 5 by setting the second limiting ring 8, and then press the adjusting ring 41 and the connecting tube 3 to rotate synchronously through the second limiting ring 8 to entangle the connection part between the connecting wire 1 and the conducting wire 5 to enhance the connection effect.

[0025] Furthermore, four groups of slots 9 are provided in the housing 2, and latches 10 are inserted into the slots 9. Figure 3 As shown, the structure is used to insert the plug 10 into the matching card slot 9 by measuring the length of the connecting part between the connecting wire 1 and the wire 5, so as to avoid the connecting part between the connecting wire 1 and the wire 5 being too short and unable to be connected.

[0026] Furthermore, four sets of positive and negative electrode marks 11 are provided on the surface of the housing 2, and the positive and negative electrode marks 11 are located on the left and right sides of the connecting tube 3. Figure 3 As shown, the structure is used to facilitate the insertion of the positive and negative electrodes into the corresponding holes through the setting of the positive and negative electrode marks 11.

[0027] Furthermore, the surface of the housing 2 is provided with scale lines 12, which are located outside the movable groove 71. As shown in the figure, the structure is used to facilitate inserting the latch 10 into the appropriate slot 9 according to the size and model through the scale lines 12.

[0028] Working principle: When used, Figure 1 and Figure 3 As shown, the length of the connection part of the connecting wire 1 and the wire 5 is measured, and the plug 10 is inserted into the matching card slot 9 according to the model or length, and then the pull rod 73 is pulled to drive the slider 61 to slide along the movable slot 71 to the center position, and the slider 61 is moved to a suitable position so that the connection parts of the connecting wire 1 and the wire 5 are fully overlapped, which is convenient for connection. The connecting wire 1 and the wire 5 are inserted into the corresponding holes through the positive and negative pole marks 11, as shown in FIG. Figure 5 As shown, when the wire 5 or the connecting wire 1 is inserted, it contacts the fixing sleeve 65 during insertion, and is slidably connected to the slider 61 through the second connecting rod 64, pushing the fixing sleeve 65 to move to both sides, so that the spring 63 is squeezed and deformed by the second connecting rod 64. After being inserted into a suitable position, the connecting wire 1 or the wire 5 is fixed under the rebound action of the spring 63, and is guided by the fixing sleeve 65 to be located in the center, as shown in FIG. Figure 3 and Figure 4As shown, when the locking assembly 4 and the wire 5 are inserted into the connecting tube 3, the adjusting ring 41 is rotated again, and the inner gear 43 and the pinion 45 are meshed with each other, driving the first connecting rod 44 and the fixing block 46 to rotate inward, clamping and fixing the connecting part of the connecting wire 1 and the wire 5, and then pressing the adjusting ring 41 and the connecting tube 3 to rotate synchronously through the second limiting ring 8, winding the connecting part at the connecting wire 1 and the wire 5, and enhancing the connection effect. The above is the entire working principle of the present invention.

[0029] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A thermocouple compensation wire automatic calibration device, comprising a connecting wire (1) and a wire (5), characterized in that: The left end of the connecting line (1) is provided with a housing (2), the center position of the housing (2) is connected to two groups of connecting tubes (3), the center positions of the two groups of connecting tubes (3) are provided with locking components (4), the left side of the housing (2) is provided with a conductor (5), and the housing (2) is provided with four groups of fixing components (6); The locking assembly (4) comprises an adjusting ring (41), a first limiting ring (42), an internal gear (43), a first connecting rod (44), a pinion (45) and a fixing block (46); the adjusting ring (41) is arranged inside the connecting tube (3); two groups of first limiting rings (42) are arranged on the outside of the adjusting ring (41); the inner side of the adjusting ring (41) is connected to the internal gear (43); six groups of first connecting rods (44) are arranged inside the connecting tube (3); the top ends of the six groups of first connecting rods (44) are all provided with pinions (45); and the other ends of the six groups of first connecting rods (44) are respectively provided with six groups of fixing blocks (46).

2. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: The fixing assembly (6) comprises a slider (61), a fixing groove (62), a spring (63), a second connecting rod (64) and a fixing sleeve (65). Four groups of sliders (61) are symmetrically arranged in the housing (2). Two groups of fixing grooves (62) are symmetrically arranged in the slider (61). The second connecting rod (64) is movably connected in the fixing groove (62). A spring (63) is arranged on the inner wall of the fixing groove (62). Two ends of the spring (63) respectively abut against the second connecting rod (64) and the inner wall of the fixing groove (62). The outer end of the second connecting rod (64) is fixedly connected to the fixing sleeve (65). The inner end of the fixing sleeve (65) is conical. The center of the fixing sleeve (65) is consistent with the connecting pipe (3).

3. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: The two ends of the first connecting rod (44) are respectively rotatably connected to the inner wall of the connecting tube (3); a pinion gear (45) is fixedly connected to the outer side of the first connecting rod (44); the inner gear (43) and the pinion gear (45) are meshed with each other; two groups of first limiting rings (42) are fixedly connected to the left and right sides of the adjusting ring (41); the adjusting ring (41) is rotatably connected to the connecting tube (3) via the first limiting rings (42); the fixing blocks (46) are fixedly connected to the first connecting rod (44); and the six groups of fixing blocks (46) are blade-shaped.

4. The automatic calibration device for thermocouple compensation wire according to claim 2, characterized in that: An adjustment component (7) is arranged in the housing (2), and the adjustment component (7) comprises a movable groove (71), a third connecting rod (72) and a pull rod (73). Four groups of movable grooves (71) are provided in the housing (2), the slider (61) is concave-shaped, the movable grooves (71) are T-shaped and are matched with the slider (61), the top of the slider (61) is fixedly connected to the third connecting rod (72), and the upper end of the third connecting rod (72) is located on the surface of the housing (2) and is fixedly connected to the pull rod (73).

5. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: The left and right sides of the connecting tube (3) are fixedly connected to second limiting rings (8); a sliding groove matched with the second limiting ring (8) is provided in the outer shell (2); and the connecting tube (3) is rotatably connected to the outer shell (2) via the second limiting ring (8).

6. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: Four groups of card slots (9) are provided in the housing (2), and latch pins (10) are inserted into the card slots (9).

7. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: Four sets of positive and negative electrode markings (11) are provided on the surface of the housing (2), and the positive and negative electrode markings (11) are located on the left and right sides of the connecting tube (3).

8. The automatic calibration device for thermocouple compensation wire according to claim 1, characterized in that: The surface of the housing (2) is provided with scale lines (12), and the scale lines (12) are located outside the movable groove (71).

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