Automatic temperature measuring device

Abstract

The invention relates to the field of target material temperature measuring equipment, and discloses an automatic temperature measuring device which comprises a fixed shaft, a sliding shaft movably connected in the fixed shaft, a first power unit used for driving the fixed shaft to ascend and descend and a second power unit used for driving the sliding shaft to ascend and descend. The fixed shaft is also provided with a horizontally telescopic temperature measuring unit, and the temperature measuring unit is linked with the sliding shaft; when the sliding shaft moves upwards relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move away from the inner wall of the target material. When the sliding shaft moves downwards relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move towards the inner wall of the target material and cling to the inner wall of the target material. The temperature measuring device can accurately measure the temperature of different positions in the target material.

Description

Technical Field

[0001] The invention relates to the field of target material temperature measuring equipment, and in particular to an automatic temperature measuring device. Background Art

[0002] In the rotating target binding process, when the temperature of the rotating target and the internal temperature of the back tube reaches the temperature required by the process, the rotating target is bound. Therefore, the temperature of the target needs to be detected. However, due to the small inner diameter of the target and the long length of the target, the overall length is up to 4 meters. The existing temperature measuring instruments on the market cannot measure the temperature inside the target. Moreover, the temperature inside the target is high, and the commonly used electric or pneumatic actuators cannot withstand this temperature, resulting in the inability to measure the temperature inside the target. Only the temperature of the outer wall of the target can be measured. Since the outer wall of the target is in contact with the air, the cooling speed is fast, and the temperature difference with the inside of the target is large, resulting in the need for multiple binding of the target, which is inefficient and wastes labor.

[0003] CN102435332A discloses a pipeline temperature measuring device, wherein a temperature sensor and a temperature data processing device are installed in a shell, the temperature sensor and the temperature data processing device are connected, a support rod is connected to the bottom end of the shell, a temperature sensing probe of the temperature sensor is located at the lower end of the support rod, a heat-conducting base is connected to the lower end of the support rod, the temperature sensing probe of the temperature sensor is embedded in the heat-conducting base, and a clamp is connected to the heat-conducting base. The temperature measuring device uses a clamp to fix the temperature sensing probe on the pipeline, and after measuring the temperature of the outer wall of the pipeline, the temperature data processing device converts the temperature of the outer wall into the temperature of the gas or liquid inside the pipeline. However, there will be a certain error in processing the temperature of the outer wall of the pipeline into the temperature inside the pipeline by calculation.

[0004] Therefore, the technical problem to be solved by the present invention is: how to accurately measure the temperature at different positions inside the target material. Summary of the invention

[0005] The main purpose of the present invention is to provide an automatic temperature measuring device, which can be attached to the inner wall of the target material through a walking wheel unit so that the entire device can stably move on the inner wall of the target material, and then measure the temperature of different positions on the inner wall of the target material through a horizontally retractable temperature measuring unit, thereby accurately measuring the temperature of different positions inside the target material.

[0006] To achieve the above objectives, the technical solutions adopted in this application are:

[0007] An automatic temperature measuring device comprises a fixed shaft, a sliding shaft movably connected in the fixed shaft, a first power unit for driving the fixed shaft to rise and fall, and a second power unit for driving the sliding shaft to rise and fall. The fixed shaft is provided with a running wheel unit that fits the inner wall of the target material and runs. The fixed shaft is also provided with a horizontally retractable temperature measuring unit, and the temperature measuring unit and the sliding shaft are linked.

[0008] When the sliding shaft moves upward relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move away from the inner wall of the target material;

[0009] When the sliding shaft moves downward relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move toward the inner wall of the target material and is close to the inner wall of the target material.

[0010] Preferably, the temperature measuring unit comprises a first fixed seat, a first sliding seat, a scissor-type telescopic module, and a temperature measuring module; two fulcrums on one side of the scissor-type telescopic module are respectively hinged to the first fixed seat and the first sliding seat; the first fixed seat is fixedly connected to the outer periphery of the fixed shaft; the first sliding seat can be driven by the sliding shaft to move up and down along the axis of the fixed shaft;

[0011] Two supporting points on one side of the scissor-type telescopic module are connected to the temperature measuring module in a relatively rotatable manner, and at least one of the supporting points can move relative to the temperature measuring module along the axial direction of the sliding shaft.

[0012] Preferably, a counterweight is provided at the lower end of the sliding shaft; a first spring is provided between the first fixed seat and the first sliding seat; the first spring is used to provide a buffering force to the first sliding seat and the first fixed seat; the gravity of the counterweight is greater than the elastic force of the first spring.

[0013] Preferably, the temperature measuring module includes a bracket and a temperature sensor; two fulcrums on one side of the scissor-type telescopic module are connected to the bracket in a relatively rotatable manner and at least one of the fulcrums can move relative to the temperature measuring module along the axial direction of the sliding shaft; the bracket is provided with a protective shell; the temperature sensor is installed in the protective shell; the protective shell is made of high temperature resistant material.

[0014] Preferably, the scissor-type telescopic module includes a first arm and a second arm; the bracket is provided with a sliding groove; one end of the first arm is hinged to the first fixed seat, and the other end is movably connected to the bracket through the sliding groove; one end of the second arm is hinged to the first sliding seat, and the other end is hinged to the bracket; the first arm and the second arm are cross-rotatably connected.

[0015] Preferably, the first power unit and the second power unit are both a cylinder, a hydraulic cylinder, a screw motor or a combination of a motor, a winding drum and a first steel wire rope.

[0016] Preferably, it also includes a winding drum; a high temperature resistant casing is wound inside the winding drum; a second steel wire rope is arranged inside the casing; the temperature sensor is provided with a connecting wire; and the connecting wire is inserted into the casing.

[0017] Preferably, the walking wheel unit includes a second fixed seat, a second sliding seat, a third arm, and a fourth arm; the second fixed seat is connected to the fixed shaft; the second sliding seat is slidably connected to the fixed shaft; one end of the third arm is hinged to the second fixed seat, and the other end is provided with a first walking wheel; one end of the fourth arm is hinged to the second sliding seat, and the other end is provided with a second walking wheel; the third arm and the fourth arm are cross-rotatingly connected.

[0018] Preferably, an adjusting hand wheel is provided on the top of the fixed shaft; a second spring is provided on the fixed shaft sleeve, and the second spring is located between the adjusting hand wheel and the second sliding seat; and the adjusting hand wheel is used to adjust the elastic force of the second spring on the second sliding seat.

[0019] Preferably, it also includes a control unit; the control unit is used to control the opening and closing of the first power unit and the second power unit and receive temperature data from the temperature measuring unit.

[0020] Compared with the prior art, this solution has the following beneficial effects:

[0021] The temperature measuring device of this scheme improves the stability of the temperature measuring device when moving by making the walking wheel unit fit the inner wall of the target material, and the walking wheel unit can adapt to targets of different diameters. Secondly, when the first power unit drives the fixed shaft to move and thus drives the temperature measuring device to move to different positions, the second power unit drives the sliding shaft to move upward, so that the sliding shaft drives the temperature measuring unit away from the inner wall of the target material. After reaching the temperature measurement position, the sliding shaft drives the temperature measuring unit to fit closely to the inner wall of the target material, thereby realizing the temperature measurement inside the target material. By designing this device, when performing multi-point temperature measurement on the inner wall of the target material, the inner wall of the target material will not be scratched. Moreover, the temperature measurement unit is directly fitted with the inner wall of the target material for temperature measurement, so the data is more accurate and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the automatic temperature measuring device of Example 1;

[0023] Figure 2 It is a side view of the automatic temperature measuring device of Example 1;

[0024] Figure 3 For Example 1 Figure 2 A magnified view of middle;

[0025] Figure 4 This is a schematic diagram of the structure of the fixed shaft of Example 1.

[0026] Among them: fixed shaft 1; sliding shaft 2; first power unit 3; second power unit 4; walking wheel unit 5; temperature measuring unit 6; winding drum 7; target material 8; top cone 9; first spring 11; adjusting hand wheel 12; second spring 13; strip hole 14; counterweight block 21; connecting piece 22; motor 31; winding drum 32; first wire rope 33; second fixed seat 51; second sliding seat 52; third arm 53; fourth arm 54; first walking wheel 55; second walking wheel 56; first fixed seat 61; first sliding seat 62; scissors-type telescopic module 63; temperature measuring module 64; sleeve 71; first arm 631; second arm 632; bracket 641; temperature sensor 642; protective shell 643; sliding groove 644. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the present application implemented as generally shown here can be arranged and designed in various different configurations.

[0028] Example 1

[0029] refer to Figure 1-4 , an automatic temperature measuring device, comprising a fixed shaft 1, a sliding shaft 2 movably connected in the fixed shaft 1, a first power unit 3 for driving the fixed shaft 1 to rise and fall, and a second power unit 4 for driving the sliding shaft 2 to rise and fall, the fixed shaft 1 is provided with a walking wheel unit 5 that fits the inner wall of the target material 8 and walks, and the fixed shaft 1 is also provided with a horizontally retractable temperature measuring unit 6, and the temperature measuring unit 6 is linked to the sliding shaft 2;

[0030] When the sliding shaft 2 moves upward relative to the fixed shaft 1, the sliding shaft 2 drives the temperature measuring unit 6 to move away from the inner wall of the target material 8;

[0031] When the sliding shaft 2 moves downward relative to the fixed shaft 1 , the sliding shaft 2 drives the temperature measuring unit 6 to move toward the inner wall of the target 8 and is close to the inner wall of the target 8 .

[0032] In this embodiment, the specific working process of the temperature measuring device is as follows: the staff places the target material 8 vertically on the target material 8 binding machine, and then puts the top cone 9 on the target material 8 binding machine against the end of the target material 8, and starts the target material 8 binding machine to heat the target material 8; after the heating is completed, the temperature measuring device is placed into the interior of the target material 8 through the inside of the top cone 9. When the temperature measuring device enters the interior of the target material 8, the walking wheel unit 5 opens and fits with the inner wall of the target material 8, and the second power unit 4 drives the sliding shaft 2 to move upward for a distance so that the sliding shaft 2 drives the temperature measuring unit 6 After breaking away from the inner wall of the target material 8, the first power unit 3 and the second power unit 4 respectively drive the fixed shaft 1 and the sliding shaft 2 to move downward at the same speed, so that when the temperature measuring device moves, the temperature measuring unit 6 will not contact the inner wall of the target material 8, thereby preventing the temperature measuring unit 6 from scratching the inner wall of the target material 8; when the temperature measuring unit 6 reaches the temperature measuring position, the second power unit 4 cancels the pulling force on the sliding shaft 2, and the sliding shaft 2 moves downward due to the action of gravity, so that the temperature measuring unit 6 moves toward the inner wall of the target material 8 and fits closely to the inner wall of the target material 8, thereby measuring the temperature at this position.

[0033] Preferably, the temperature measuring unit 6 comprises a first fixed seat 61, a first sliding seat 62, a scissor-type telescopic module 63, and a temperature measuring module 64; two fulcrums on one side of the scissor-type telescopic module 63 are respectively hinged to the first fixed seat 61 and the first sliding seat 62; the first fixed seat 61 is fixedly connected to the outer periphery of the fixed shaft 1; the first sliding seat 62 is driven by the sliding shaft 2 to move up and down along the axial direction of the fixed shaft 1;

[0034] Two supporting points on one side of the scissor-type telescopic module 63 are connected to the temperature measuring module 64 in a relatively rotatable manner, and at least one of the supporting points can move relative to the temperature measuring module 64 along the axial direction of the sliding shaft 2 .

[0035] In this embodiment, a strip hole 14 is provided on the fixed shaft 1, and a connecting piece 22 is provided on the sliding shaft 2. The connecting piece 22 passes through the strip hole 14 and is connected to the first sliding seat 62. The first sliding seat 62 is slidably connected to the fixed shaft 1 through a linear bearing, so that the first sliding seat 62 can be driven by the sliding shaft 2 to move up and down along the fixed shaft 1. In order to explain more clearly, the four fulcrums of the scissor-type telescopic module 63 are divided into a first fulcrum, a second fulcrum, a third fulcrum, and a fourth fulcrum; the first fulcrum is hinged to the first sliding seat 62, the second fulcrum is hinged to the first fixed seat 61, the third fulcrum is slidably connected to the temperature measuring module 64 and can rotate on the temperature measuring module 64, the fourth fulcrum is hinged to the temperature measuring module 64, the first fulcrum and the third fulcrum are at the same height, and the second fulcrum and the fourth fulcrum are at the same height. When the sliding shaft 2 drives the first sliding seat 62 to move, the first fulcrum moves with the first sliding seat 62, so that the fourth fulcrum drives the temperature measuring module 64 to approach or move away from the inner wall of the target material 8. At this time, the third fulcrum slides on the temperature measuring module 64 to prevent the temperature measuring module 64 from interfering with the scissor-type telescopic module 63 and being unable to move.

[0036] Preferably, a counterweight 21 is provided at the lower end of the sliding shaft 2; a first spring 11 is provided between the first fixed seat 61 and the first sliding seat 62; the first spring 11 is used to provide a buffering force to the first sliding seat 62 and the first fixed seat 61; the gravity of the counterweight 21 is greater than the elastic force of the first spring 11.

[0037] In this embodiment, the gravity of the counterweight 21 is twice the maximum elastic force of the first spring 11. A first spring 11 is provided between the first fixed seat 61 and the first sliding seat 62. When the second power unit 4 drives the first sliding seat 62 to move upward, the first spring 11 can offset part of the gravity of the counterweight 21, so that the second power unit 4 can pull more smoothly; when temperature measurement is required, the second power unit 4 cancels the pulling force on the first sliding seat 62. Due to the gravity of the counterweight 21, the counterweight 21 drives the sliding shaft 2 to move downward, so that the sliding shaft 2 drives the temperature measuring unit 6 to move close to the inner wall of the target 8 and fit on the inner wall of the target 8 for temperature measurement; and when the temperature measuring device moves downward, the counterweight 21 provides a downward force to the temperature measuring device to ensure that the temperature measuring device can stably move downward to the required temperature measurement position.

[0038] Preferably, the temperature measuring module 64 includes a bracket 641 and a temperature sensor 642; the two fulcrums on one side of the scissor-type telescopic module 63 are connected to the bracket 641 in a relatively rotatable manner and at least one of the fulcrums can move relative to the temperature measuring module 64 along the axial direction of the sliding shaft 2; the bracket 641 is provided with a protective shell 643; the temperature sensor 642 is installed in the protective shell 643; the protective shell 643 is made of high temperature resistant material.

[0039] In this embodiment, the temperature sensor 642 is a K-type thermocouple, which can continuously measure temperature in an environment of -200°C to 1300°C, and the protective shell 643 is made of ceramic, so that the temperature measurement module 64 can normally measure the temperature of the inner wall of the target material 8.

[0040] Preferably, the scissor-type telescopic module 63 includes a first arm 631 and a second arm 632; the bracket 641 is provided with a sliding groove 644; one end of the first arm 631 is hinged to the first fixed seat 61, and the other end is movably connected to the bracket 641 through the sliding groove 644; one end of the second arm 632 is hinged to the first sliding seat 62, and the other end is hinged to the bracket 641; the first arm 631 and the second arm 632 are cross-rotatably connected.

[0041] In this embodiment, the sliding shaft 2 drives the first sliding seat 62 to move up and down on the fixed shaft 1, thereby driving one fulcrum of the second arm 632 to move upward, and making the other fulcrum of the second arm 632 drive the bracket 641 close to or away from the fixed shaft 1; the bracket 641 is provided with a sliding groove 644, and the first arm 631 can slide up and down in the sliding groove 644 to prevent the bracket 641 from getting stuck when approaching or moving away from the fixed shaft 1.

[0042] Preferably, the first power unit 3 and the second power unit 4 are both a cylinder, a hydraulic cylinder, a screw motor 31 or a combination of a motor 31 , a winding drum 32 , and a first steel wire rope 33 .

[0043] In this embodiment, the first power unit 3 and the second power unit 4 both use a combination of a motor 31, a winding drum 32, and a first steel wire rope 33. The combination of the motor 31, the winding drum 32, and the first steel wire rope 33 can avoid setting a power source on the fixed shaft 1 or the sliding shaft 2. Since the temperature inside the target material 8 is relatively high, if a power source is set on the fixed shaft 1 or the sliding shaft 2, the power source may fail under high temperature for a long time.

[0044] The winding drum 32 is connected to the power output end of the motor 31, the first steel wire rope 33 is wound on the winding drum 32, and the two first steel wire ropes 33 are respectively connected to the top of the fixed shaft 1 and the top of the sliding shaft 2. The motor 31 pulls the steel wire rope to drive the fixed shaft 1 or the sliding shaft 2 to move up and down. The motor 31 does not need to enter the target material 8. Therefore, the power source is not affected by the temperature, so that the temperature measuring device can move normally inside the target material 8.

[0045] Preferably, it further comprises a winding drum 7 ; a high temperature resistant casing 71 is wound inside the winding drum 7 ; a second steel wire rope is arranged inside the casing 71 ; the temperature sensor 642 is provided with a connecting wire; and the connecting wire is inserted into the casing 71 .

[0046] In this embodiment, the sleeve 71 is a Teflon tube that can withstand higher temperatures. When the temperature measuring device moves downward, the winding reel 7 is pulled downward by the temperature measuring device, so that the sleeve 71 moves downward with the connecting wire following the temperature measuring device; when the temperature measuring device moves upward, the winding reel 7 has a torsion spring, which can make the sleeve 71 and the connecting wire reel 32. A second steel wire rope is arranged in the sleeve 71, so that the sleeve 71 and the second steel wire rope bear the pulling force of the temperature measuring device, avoiding the connecting wire being broken or worn due to the force, which affects the data transmission.

[0047] Preferably, the walking wheel unit 5 includes a second fixed seat 51, a second sliding seat 52, a third arm 53, and a fourth arm 54; the second fixed seat 51 is connected to the fixed shaft 1; the second sliding seat 52 is slidably connected to the fixed shaft 1; one end of the third arm 53 is hinged to the second fixed seat 51, and the other end is provided with a first walking wheel 55; one end of the fourth arm 54 is hinged to the second sliding seat 52, and the other end is provided with a second walking wheel 56; the third arm 53 and the fourth arm 54 are cross-rotatingly connected.

[0048] In this embodiment, the third arm 53 and the fourth arm 54 constitute a scissor-type telescopic mechanism. When the first walking wheel 55 and the second walking wheel 56 are in contact with the inner wall of the target material 8 of different diameters, the first walking wheel 55 and the second walking wheel 56 press the third arm 53 and the fourth arm 54, so that the second sliding seat 52 moves up and down in the fixed shaft 1, thereby enabling the walking wheel unit 5 to roll on the inner wall of the target material 8 of different diameters.

[0049] Preferably, an adjusting hand wheel 12 is provided on the top of the fixed shaft 1 ; a second spring 13 is sleeved on the fixed shaft 1 , and the second spring 13 is located between the adjusting hand wheel 12 and the second sliding seat 52 ; the adjusting hand wheel 12 is used to adjust the elastic force of the second spring 13 on the second sliding seat 52 .

[0050] In this embodiment, when the first running wheel 55 and the second running wheel 56 press the third arm 53 and the fourth arm 54, so that the second sliding seat 52 moves up and down in the fixed shaft 1, the second spring 13 provides elastic force to the second sliding seat 52, so that the first running wheel 55 and the second running wheel 56 can always keep running in contact with the inner wall of the target material 8. The fixed shaft 1 is also provided with an adjusting hand wheel 12, which is threadedly connected to the fixed shaft 1. When the diameter of the target material 8 increases, the moving distance of the second sliding seat 52 decreases, and the elastic force provided by the second spring 13 decreases. At this time, the adjusting hand wheel 12 can be turned to increase the deformation of the second spring 13, thereby increasing the elastic force that the second spring 13 can provide.

[0051] Preferably, it also includes a control unit; the control unit is used to control the opening and closing of the first power unit 3 and the second power unit 4 and receive the temperature data of the temperature measuring unit 6.

[0052] In this embodiment, the control unit controls the first power unit 3 and the second power unit 4 by controlling the encoder, so that when the temperature measuring device moves, the second power unit 4 drives the sliding shaft 2 to move upward for a distance, so that the temperature measuring unit 6 is separated from the inner wall of the target material 8, and then the control unit controls the first power unit 3 and the second power unit 4 to rotate at the same speed, thereby driving the temperature measuring device to move up and down as a whole. By setting the encoder, the rotation angle of the motor 31 and the length of the wire rope can be accurately controlled, so that the temperature of a certain position can be accurately measured. The control unit receives temperature data through the connecting line of the temperature sensor 642 and displays it to the staff.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic temperature measuring device, characterized in that: It includes a fixed shaft, a sliding shaft movably connected in the fixed shaft, a first power unit for driving the fixed shaft to rise and fall, and a second power unit for driving the sliding shaft to rise and fall. The fixed shaft is provided with a walking wheel unit that fits the inner wall of the target material and walks. The fixed shaft is also provided with a horizontally retractable temperature measuring unit, and the temperature measuring unit is linked to the sliding shaft. When the sliding shaft moves upward relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move away from the inner wall of the target material; When the sliding shaft moves downward relative to the fixed shaft, the sliding shaft drives the temperature measuring unit to move toward the inner wall of the target material and is close to the inner wall of the target material.

2. The automatic temperature measuring device according to claim 1, characterized in that: The temperature measuring unit comprises a first fixed seat, a first sliding seat, a scissor-type telescopic module, and a temperature measuring module; two fulcrums on one side of the scissor-type telescopic module are respectively hinged to the first fixed seat and the first sliding seat; the first fixed seat is fixedly connected to the outer periphery of the fixed shaft; the first sliding seat can be driven by the sliding shaft to move up and down along the axis of the fixed shaft; Two supporting points on one side of the scissor-type telescopic module are connected to the temperature measuring module in a relatively rotatable manner, and at least one of the supporting points can move relative to the temperature measuring module along the axial direction of the sliding shaft.

3. The automatic temperature measuring device according to claim 2, characterized in that: A counterweight is provided at the lower end of the sliding shaft; a first spring is provided between the first fixed seat and the first sliding seat; the first spring is used to provide a buffer force to the first sliding seat and the first fixed seat; the gravity of the counterweight is greater than the elastic force of the first spring.

4. The automatic temperature measuring device according to claim 2, characterized in that: The temperature measuring module includes a bracket and a temperature sensor; two fulcrums on one side of the scissor-type telescopic module are connected to the bracket in a relatively rotatable manner, and at least one of the fulcrums can move relative to the temperature measuring module along the axial direction of the sliding shaft; the bracket is provided with a protective shell; the temperature sensor is installed in the protective shell; the protective shell is made of high temperature resistant material.

5. The automatic temperature measuring device according to claim 4, characterized in that: The scissor-type telescopic module includes a first arm and a second arm; the bracket is provided with a sliding groove; one end of the first arm is hinged to the first fixed seat, and the other end is movably connected to the bracket through the sliding groove; one end of the second arm is hinged to the first sliding seat, and the other end is hinged to the bracket; the first arm and the second arm are cross-rotatably connected.

6. The automatic temperature measuring device according to claim 1, characterized in that: The first power unit and the second power unit are both a cylinder, a hydraulic cylinder, a screw motor or a motor, a winding drum, and a combination of a first steel wire rope.

7. The automatic temperature measuring device according to claim 5, characterized in that: It also includes a winding drum; a high-temperature resistant casing is wound inside the winding drum; a second steel wire rope is arranged inside the casing; the temperature sensor is provided with a connecting wire; and the connecting wire is inserted into the casing.

8. The automatic temperature measuring device according to claim 1, characterized in that: The walking wheel unit includes a second fixed seat, a second sliding seat, a third arm, and a fourth arm; the second fixed seat is connected to a fixed shaft; the second sliding seat is slidably connected to the fixed shaft; one end of the third arm is hinged to the second fixed seat, and the other end is provided with a first walking wheel; one end of the fourth arm is hinged to the second sliding seat, and the other end is provided with a second walking wheel; the third arm and the fourth arm are cross-rotatingly connected.

9. The automatic temperature measuring device according to claim 8, characterized in that: An adjusting hand wheel is provided on the top of the fixed shaft; a second spring is provided on the fixed shaft sleeve, and the second spring is located between the adjusting hand wheel and the second sliding seat; the adjusting hand wheel is used to adjust the elastic force of the second spring on the second sliding seat.

10. The automatic temperature measuring device according to claim 1, characterized in that: It also includes a control unit; the control unit is used to control the opening and closing of the first power unit and the second power unit and receive temperature data from the temperature measuring unit.

Images