Translation sliding positioning mechanism used outside thermocouple verification furnace

Abstract

The utility model discloses a translation sliding positioning mechanism used outside a thermocouple verification furnace, which belongs to the technical field of sliding positioning and comprises a translation sliding mechanism and a thermocouple concentric positioning mechanism, the translation sliding mechanism comprises a clamping seat arranged above the thermocouple verification furnace, and a linear sliding seat is arranged above the clamping seat through a linear sliding rail in a sliding manner; the thermocouple concentric positioning mechanism comprises an annular slide rail, a lifting rotary seat is rotatably mounted on the annular slide rail, a vertically arranged lifting screw rod is in threaded fit with the inner side of the lifting rotary seat, a clamping seat is fixed to the lower end of the lifting screw rod, a positioning disc is detachably clamped in the clamping seat, and a thermocouple is fixedly mounted on the positioning disc. The mechanism is installed outside a thermocouple verification furnace, a standard thermocouple and a thermocouple to be tested are installed on the positioning disc together, all the thermocouples can be translated into a detection cylinder in the thermocouple verification furnace by moving the linear sliding seat, and all the thermocouples are more stable during translation and can be accurately inserted into the detection cylinder.

Description

Technical Field

[0001] The utility model relates to the technical field of sliding positioning, in particular to a translation sliding positioning mechanism used outside a thermocouple calibration furnace. Background Art

[0002] Thermocouple is a commonly used temperature measuring element, mainly used for temperature measurement. It can convert temperature signals into thermoelectromotive force signals, and then convert them into the temperature of the medium being measured through secondary instruments (such as display instruments, recording instruments and electronic regulators). In order to ensure the temperature measurement accuracy of thermocouples, it is necessary to use a thermocouple calibration furnace to regularly test the thermocouples. When using a thermocouple calibration furnace for testing, it is necessary to insert a standard thermocouple and multiple thermocouples to be tested into the thermocouple calibration furnace together. After heating them, the temperature difference between the thermocouple to be tested and the standard thermocouple is compared. If the temperature difference is too large, the measured thermocouple fails.

[0003] Before testing the thermocouple, it is necessary to insert the thermocouples one by one into the test tube inside the thermocouple calibration furnace. Currently, this operation is mainly done manually by holding the thermocouple. Since the test tube is located inside the thermocouple calibration furnace and is not visible, the thermocouple will shake slightly when being inserted into the test tube by holding the thermocouple. This is not conducive to accurately inserting the thermocouple into the test tube, resulting in great inconvenience during use. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a translation and sliding positioning mechanism for the outside of a thermocouple calibration furnace. The mechanism is installed outside the thermocouple calibration furnace, and the standard thermocouple and the thermocouple to be tested are installed on a positioning disk together. By moving the linear slide, all thermocouples can be translated into the detection tube in the thermocouple calibration furnace. All thermocouples are more stable during translation and can be accurately inserted into the detection tube, which is more convenient to use.

[0005] In order to solve the above technical problems, the technical solution of the utility model is achieved as follows:

[0006] The utility model provides a kind of translational sliding positioning mechanism for thermocouple calibration furnace outside, including translational sliding mechanism and thermocouple concentric positioning mechanism;Translational sliding mechanism includes mount on the clamp holder of thermocouple calibration furnace, one end of clamp holder is connected with fixed jaw, the end of clamp holder away from fixed jaw is matched with tight screw rod, the end of tight screw rod is rotatably installed with movable jaw, and clamp holder is firmly fixed on thermocouple calibration furnace under the clamping of fixed jaw and movable jaw;Linear slide is slidably installed on the top of clamp holder and drives the linear slide of thermocouple concentric positioning mechanism to translate;Thermocouple concentric positioning mechanism includes annular slide rail fixed at the end of linear slide, annular slide rail is rotatably installed with lifting rotary seat, lifting rotary seat is threadedly matched with vertically arranged lifting screw rod on the inside;The lower end of lifting screw rod is fixed with the holder, and the holder is detachably connected with the positioning disc in it;Multiple circumferentially arrayed positioning holes are formed in the positioning disc, and thermocouples are fixedly installed in the positioning holes;The utility model includes a standard thermocouple, and the rest are to be measured thermocouples, and all thermocouples can be translated into the detection cylinder in thermocouple calibration furnace by moving linear slide.

[0007] By the above scheme, the mechanism is installed outside the thermocouple calibration furnace, the standard thermocouple and the to-be-measured thermocouples are installed on the positioning disc, all thermocouples can be translated into the detection cylinder in the thermocouple calibration furnace by moving the linear slide, all thermocouples are more stable during translation, can be accurately inserted into the detection cylinder, and are more convenient to use.

[0008] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, one side of the lifting screw rod is fixed with a guide seat below the linear slide, the lower side of the linear slide is fixed with a guide shaft parallel to the lifting screw rod, and the guide seat is slidably installed on the guide shaft.

[0009] By the above scheme, in order to avoid the deflection of the lifting screw rod during lifting, the guide seat and the guide shaft are matched to guide the vertical lifting of the lifting screw rod.

[0010] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, the fitting relationship between the holder and the positioning disc is interference assembly; one side of the holder is installed with a socket, the socket is slidably installed on a spring column fixed on one side of the holder, a spring is sleeved on the spring column to push the socket to move to the position of the holder; a socket hole is formed in the upper side of the positioning disc, the pin of the socket can be inserted into the socket hole under the elastic pushing of the spring; one side of the socket is fixedly connected with a pull ring.

[0011] By the above scheme, in order to facilitate the disassembly and assembly of the positioning disc, the socket is pulled outwards during disassembly, the pin of the socket is separated from the socket hole, and the positioning disc can be disassembled, so that different types of positioning discs can be replaced to meet the positioning of thermocouples of different specifications.

[0012] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, a rubber sleeve is fixed in the positioning hole, and the cooperation between the thermocouple and the rubber sleeve is an interference assembly.

[0013] By installing the rubber sleeve, the friction is increased, so that the thermocouple is tightly fixed in the positioning hole.

[0014] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, four rotating handles are fixed on the side wall of the lifting rotary seat in a circumferential array.

[0015] By rotating the rotating handle, the lifting rotary seat can be rotated more easily.

[0016] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, the fixed clamping jaw and the movable clamping jaw are both L-shaped clamping jaws.

[0017] By designing the clamping jaw as an L-shaped clamping jaw, the clamping jaw can be more reliable after clamping the thermocouple calibration furnace.

[0018] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, the end of the tightening screw is fixed with a limiting ball, and the tightening screw is rotatably installed in the movable clamping jaw through the limiting ball.

[0019] By connecting the limiting ball between the movable clamping jaw and the tightening screw, the movable clamping jaw can be prevented from rotating with the tightening screw while ensuring the connection.

[0020] As a preferred embodiment of the translational sliding positioning mechanism outside the thermocouple calibration furnace, two fastening studs are matched with the linear slide, and the top head of the fastening stud can abut against the surface of the linear slide rail.

[0021] By using two fastening studs to simultaneously fix the linear slide, the stability of the linear slide after being fixed can be ensured.

[0022] After the above technical scheme is adopted, the beneficial effects of the present application are:

[0023] 1. Install the mechanism outside the thermocouple calibration furnace, install the standard thermocouple and the thermocouple to be tested on the positioning disk together, and move the linear slide to translate all the thermocouples into the detection cylinder in the thermocouple calibration furnace. All the thermocouples are more stable during translation and can be accurately inserted into the detection cylinder, making it more convenient to use.

[0024] 2. In order to prevent the lifting screw from deflecting during lifting, a guide seat and a guide shaft cooperate with each other to guide the vertical lifting of the lifting screw;

[0025] 3. In order to facilitate the disassembly and assembly of the positioning disc, when disassembling, pull the socket outward. At this time, the socket pin will be disengaged from the socket, and the positioning disc can be removed. In this way, different types of positioning discs can be replaced to meet the positioning of thermocouples of different specifications.

[0026] 4. In order to ensure that the thermocouple is fixed stably and reliably, a rubber sleeve is installed to increase friction, thereby ensuring that the thermocouple is tightly fixed in the positioning hole;

[0027] 5. In order to facilitate the coordination between the clamp and the thermocouple calibration furnace, the clamp is designed as an L-shaped clamp, which will be more reliable after clamping the thermocouple calibration furnace;

[0028] 6. In order to prevent the movable jaw from rotating with the rotation of the set screw, a limit ball is connected between the two. While ensuring the connection, it can also prevent the movable jaw from rotating with the rotation of the set screw;

[0029] 7. In order to ensure the fixation of the linear slide, two tightening screws are used to fix the linear slide at the same time, thereby ensuring the stability of the linear slide after being fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

[0031] Figure 1 The three-dimensional structure of the utility model Figure 1 ;

[0032] Figure 2 The three-dimensional structure of the utility model Figure 2 ;

[0033] Figure 3 This is a three-dimensional structure installed outside the thermocouple calibration furnace. Figure 1 ;

[0034] Figure 4 This is a three-dimensional structure installed outside the thermocouple calibration furnace. Figure 2 ;

[0035] Figure 5 For display Figure 4 A three-dimensional structural diagram of the interior;

[0036] Figure 6 for Figure 1 Three-dimensional structure of the translation sliding mechanism Figure 1 ;

[0037] Figure 7 for Figure 1 Three-dimensional structure of the translation sliding mechanism Figure 2 ;

[0038] Figure 8 For display Figure 6 A three-dimensional structural diagram of the interior of the set screw;

[0039] Figure 9 for Figure 1 The three-dimensional structure diagram of the thermocouple concentric positioning mechanism;

[0040] Figure 10 for Figure 9 Exploded diagram;

[0041] Figure 11 for Figure 10 A partial enlarged view of point A in the middle.

[0042] Markings in the figure: 1-translational sliding mechanism; 101-clamping seat; 102-fixed clamping jaw; 103-fastening screw; 104-movable clamping jaw; 105-linear slide; 106-linear slide; 107-limiting ball; 108-fastening top screw; 2-thermocouple concentric positioning mechanism; 201-annular slide; 202-lifting rotary seat; 203-lifting screw; 204-clamping seat; 205-positioning disc; 206-positioning hole; 207-guide seat; 208-guide shaft; 209-socket; 210-spring column; 211-spring; 212-jack; 213-pull ring; 214-rubber sleeve; 3-thermocouple calibration furnace; 4-thermocouple; 5-detection cylinder. DETAILED DESCRIPTION

[0043] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0044] like Figures 1 to 10 As shown, a translation sliding positioning mechanism for the outside of a thermocouple calibration furnace is used for the translation of medium and coarse thermocouples 4, which includes a translation sliding mechanism 1 and a thermocouple concentric positioning mechanism 2; the translation sliding mechanism 1 includes a clamping seat 101 installed above the thermocouple calibration furnace 3, one end of the clamping seat 101 is connected to a fixed clamping jaw 102, and the end of the clamping seat 101 away from the fixed clamping jaw 102 is equipped with a tightening screw 103, and the end of the tightening screw 103 is rotatably installed with a movable clamping jaw 104, and the clamping seat 101 is firmly fixed on the thermocouple calibration furnace 3 under the joint clamping of the fixed clamping jaw 102 and the movable clamping jaw 104; a linear slide rail 105 is slidably installed above the clamping seat 101 to drive the thermocouple concentric positioning mechanism 2 to translate The linear slide 106; the thermocouple concentric positioning mechanism 2 includes an annular slide 201 fixed at the end of the linear slide 106, and a lifting seat 202 is rotatably installed on the annular slide 201, and the inner side of the lifting seat 202 is fitted with a vertically arranged lifting screw 203 through a thread; the lower end of the lifting screw 203 is fixed with a holder 204, and a positioning disk 205 is detachably clamped in the holder 204; the positioning disk 205 is penetrated by a plurality of positioning holes 206 distributed in a circumferential array, and a thermocouple 4 is fixedly installed in the positioning hole 206; the thermocouple 4 includes a standard thermocouple, and the rest are thermocouples to be tested. By moving the linear slide 106, all the thermocouples 4 can be translated into the detection cylinder 5 in the thermocouple calibration furnace 3. The mechanism is installed outside the thermocouple calibration furnace 3, and the standard thermocouple and the thermocouple to be tested are installed on the positioning disk 205. By moving the linear slide 106, all thermocouples 4 can be translated into the detection tube 5 in the thermocouple calibration furnace 3. All thermocouples 4 are more stable during translation and can be accurately inserted into the detection tube 5, which is more convenient to use.

[0045] like Figure 9 As shown, a guide seat 207 located below the linear slide 106 is fixed to one side of the lifting screw 203. A guide shaft 208 parallel to the lifting screw 203 is fixed below the linear slide 106. The guide seat 207 is slidably mounted on the guide shaft 208. To prevent the lifting screw 203 from deflecting during lifting, the guide seat 207 and the guide shaft 208 cooperate to guide the vertical movement of the lifting screw 203.

[0046] like Figures 10 to 11As shown, the matching relationship between the card seat 204 and the positioning disc 205 is an interference assembly; one side of the card seat 204 is provided with a socket 209, the socket 209 is slidingly installed on a spring column 210 fixed on one side of the card seat 204, the spring column 210 is provided with a spring 211 for pushing the socket 209 to move to the position of the card seat 204; the upper portion of the positioning disc 205 is provided with a socket hole 212, and the pin of the socket 209 can be inserted into the socket hole 212 under the elastic pushing of the spring 211; one side of the socket 209 is fixedly connected with a pull ring 213. In order to facilitate the disassembly of the positioning disc 205, when disassembling, the socket 209 is pulled outward, at this time, the pin of the socket 209 is separated from the socket hole 212, and the positioning disc 205 can be disassembled, so that different types of positioning discs 205 are replaced to meet the positioning of different specifications of the thermocouple 4.

[0047] As shown in Figure 10 , the positioning hole 206 is fixed with a rubber sleeve 214, and the matching relationship between the thermocouple 4 and the rubber sleeve 214 is an interference assembly. In order to ensure that the thermocouple 4 is fixed stably and reliably, the rubber sleeve 214 is installed to increase the friction, so that the thermocouple 4 is tightly fixed in the positioning hole 206.

[0048] As shown in Figures 9 to 10 , the side wall of the lifting rotary seat 202 is fixed with four circumferentially arranged rotating handles. In order to facilitate the rotation of the lifting rotary seat 202, the rotating handle is rotated, and the lifting rotary seat 202 is rotated more labor-saving.

[0049] As shown in Figures 6 to 7 , the fixed jaw 102 and the movable jaw 104 are both L-shaped jaws. In order to facilitate the cooperation of the jaw with the thermocouple calibration furnace 3, the jaw is designed as an L-shaped jaw, which is more reliable after clamping the thermocouple calibration furnace 3.

[0050] As shown in Figure 8 , the end of the clamping screw 103 is fixed with a limiting ball 107, and the clamping screw 103 is rotatably installed in the movable jaw 104 through the limiting ball 107. In order to prevent the movable jaw 104 from rotating with the rotation of the clamping screw 103, the limiting ball 107 is connected between the movable jaw 104 and the clamping screw 103, which can ensure the connection and prevent the movable jaw from rotating with the rotation of the clamping screw 103.

[0051] As shown in Figure 6 , the linear slide 106 is matched with two fastening top screws 108, and the top head of the fastening top screw 108 can abut against the surface of the linear slide rail 105. In order to ensure the fixation of the linear slide 106, the linear slide 106 is fixed by two fastening top screws 108, so as to ensure the stability of the linear slide 106 after being fixed.

[0052] The working principle of the utility model is:

[0053] The mechanism only fixes one end of the thermocouple 4 through the positioning disc 205, in order to avoid the drooping deformation of the thin thermocouple 4 after being fixed, the mechanism is only used for the translation of the medium and thick thermocouple 4.

[0054] Firstly, the mechanism is installed and fixed on the thermocouple calibration furnace 3. The clamp holder 101 is placed above the thermocouple calibration furnace 3, the movable clamp jaw 104 is moved by rotating the fastening screw 103, and the clamp holder 101 is firmly fixed on the thermocouple calibration furnace 3 under the clamping of the fixed clamp jaw 102 and the movable clamp jaw 104.

[0055] Then, the concentricity of the positioning disc 205 and the detection cylinder 5 in the vertical direction is adjusted. The lifting screw 203 is vertically lifted under the screw action by rotating the lifting rotation, until the positioning disc 205 is concentric with the detection cylinder 5.

[0056] Finally, the thermocouple 4 is fixed. A standard thermocouple is fixed in the positioning hole 206, and the remaining positioning holes 206 are fixed with the measured thermocouples and installed on the positioning disc 205; all the thermocouples 4 can be translated into the detection cylinder 5 in the thermocouple calibration furnace 3 by moving the linear slide 106, the temperature difference between the measured thermocouple and the standard thermocouple is compared after heating, if the temperature difference is too large, the measured thermocouple 4 is unqualified; at this time, all the thermocouples 4 are more stable during translation, and can be accurately inserted into the detection cylinder 5, and are more convenient to use.

[0057] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A translational sliding positioning mechanism for use outside a thermocouple calibration furnace, comprising a translational sliding mechanism (1) and a thermocouple concentric positioning mechanism (2); Its characteristics are: The translation sliding mechanism (1) comprises a clamping seat (101) installed above the thermocouple calibration furnace (3); one end of the clamping seat (101) is connected to a fixed clamping jaw (102); an end of the clamping seat (101) away from the fixed clamping jaw (102) is matched with a fixing screw (103); the end of the fixing screw (103) is rotatably mounted with a movable clamping jaw (104); the clamping seat (101) is firmly fixed on the thermocouple calibration furnace (3) under the joint clamping of the fixed clamping jaw (102) and the movable clamping jaw (104); a linear slide (106) for driving the thermocouple concentric positioning mechanism (2) to translate is slidably mounted above the clamping seat (101) via a linear slide rail (105); The thermocouple concentric positioning mechanism (2) comprises an annular slide rail (201) fixed at the end of a linear slide (106); a lifting seat (202) is rotatably mounted on the annular slide rail (201); a lifting screw rod (203) is vertically arranged on the inner side of the lifting screw rod (202) through thread engagement; a clamping seat (204) is fixed at the lower end of the lifting screw rod (203); a positioning disc (205) is detachably clamped in the clamping seat (204); a plurality of positioning holes (206) distributed in a circumferential array are formed through the positioning disc (205); a thermocouple (4) is fixedly mounted in the positioning hole (206); The thermocouples (4) include a standard thermocouple and the rest are thermocouples to be tested. By moving the linear slide (106), all the thermocouples (4) can be translated into the detection cylinder (5) in the thermocouple calibration furnace (3).

2. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 1, characterized in that: A guide seat (207) located below the linear slide (106) is fixed on one side of the lifting screw (203), a guide shaft (208) parallel to the lifting screw (203) is fixed below the linear slide (106), and the guide seat (207) is slidably mounted on the guide shaft (208).

3. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 1, characterized in that: The fitting relationship between the clamping seat (204) and the positioning disc (205) is interference fitting.

4. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 3, characterized in that: A socket (209) is installed on one side of the card base (204), and the socket (209) is slidably installed on a spring column (210) fixed on one side of the card base (204). The spring column (210) is sleeved with a spring (211) for pushing the socket (209) to move toward the location of the card base (204); a socket (212) is opened above the positioning disc (205), and the socket (209) can insert a pin on the socket (209) into the socket (212) under the elastic push of the spring (211).

5. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 4, characterized in that: A pull ring (213) is fixedly connected to one side of the socket (209).

6. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 1, characterized in that: A rubber sleeve (214) is fixed in the positioning hole (206), and the fitting relationship between the thermocouple (4) and the rubber sleeve (214) is interference fitting.

7. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 1, characterized in that: Four rotating handles distributed in a circumferential array are fixed on the side wall of the lifting rotary seat (202).

8. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to any one of claims 1 to 7, characterized in that: The fixed clamping jaw (102) and the movable clamping jaw (104) are both L-shaped clamping jaws.

9. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 8, characterized in that: A limiting ball (107) is fixed to the end of the tightening screw (103), and the tightening screw (103) is rotatably installed in the movable clamping jaw (104) through the limiting ball (107).

10. The translational sliding positioning mechanism for the outside of a thermocouple calibration furnace according to claim 9, characterized in that: The linear slide (106) is equipped with two fastening screws (108), and the tops of the fastening screws (108) can contact the surface of the linear slide rail (105).

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