False tooth wear resistance detection device

Abstract

The invention relates to a false tooth wear resistance detection device applied to the technical field of false tooth performance detection, and the false tooth wear resistance detection device comprises a supporting base, a lifting cylinder is fixedly mounted on the supporting base, the output end of the lifting cylinder is fixedly connected with a simulation cavity detection cabin, a supporting frame is further fixedly mounted on the supporting base, and a friction cylinder is fixedly mounted on the supporting frame; a friction head assembly is arranged at the output end of the friction air cylinder, the detection device further comprises a saliva simulating lubricating assembly, and through combined arrangement of the friction head assembly, the saliva simulating lubricating assembly and the like, when the wear resistance of the false tooth is detected, the friction condition borne by the false tooth can be continuously changed; therefore, the wear condition of the false tooth in actual use can be simulated more truly, the accuracy and reliability of detection can be further improved, and during detection, the lubrication effect of saliva can be simulated through the saliva simulation liquid, so that the use scene of the false tooth can be simulated more truly, and the accuracy and reliability of detection can be further improved.

Description

Technical Field

[0001] The invention relates to a detection device, in particular to a denture wear resistance detection device applied in the technical field of denture performance detection. Background Art

[0002] Dentures are artificial teeth that are used to replace missing teeth, repair problems such as chewing difficulties and poor facial appearance caused by missing teeth, and help patients restore their dental functions. The wear resistance of dentures is directly related to their service life and the patient's experience, so it is necessary to test the wear resistance of dentures.

[0003] A Chinese patent with publication number CN117495862B discloses a denture wear resistance detection device, which detects wear resistance by accurately extracting friction textures, thereby avoiding the influence of other texture information on the accuracy of the detection result.

[0004] A Chinese patent with publication number CN218075287U discloses a customized denture surface performance testing device. The testing device in the patent uses a flexible clamping device to clamp the customized denture in an adaptive shape, making it easy to perform wear resistance testing on dentures of different shapes.

[0005] In the actual use of dentures, when people chew food, the dentures will be subjected to friction at different angles. However, when the detection device in the prior art detects the wear resistance of the denture, the friction angle of the denture is generally fixed, which has certain limitations and affects the accuracy and reliability of the test results. Therefore, we propose a denture wear resistance detection device. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is: when the detection device in the prior art performs wear resistance testing on the denture, the friction angle to which the denture is subjected is generally fixed, which has certain limitations and will affect the accuracy and reliability of the test results.

[0007] In order to solve the above problems, the present invention provides a denture wear resistance performance testing device, comprising a support base, a lifting cylinder is fixedly installed on the support base, a pseudo-cavity detection cabin is fixedly connected to the output end of the lifting cylinder, the top of the pseudo-cavity detection cabin is set to be open, and an openable cabin cover is provided, a support frame is also fixedly installed on the support base, a friction cylinder is fixedly installed on the support frame, a mounting seat for mounting a denture to be tested is fixedly installed in the pseudo-cavity detection cabin, and a friction head assembly is provided on the output end of the friction cylinder;

[0008] The friction head assembly includes a sliding rod fixedly connected to the output end of the friction cylinder, a sliding groove matching the friction cylinder is opened on the outer wall of the pseudo-cavity detection cabin, the sliding rod passes through the sliding groove and is slidably connected thereto, the end of the sliding rod away from the friction cylinder is fixedly connected to a hinge seat, a connecting rod is hinged on the hinge seat, and a torsion spring is arranged at the hinge between the connecting rod and the hinge seat, the end of the connecting rod away from the hinge seat is fixedly connected to the friction head, the friction head is arranged in an inclined shape, and the end of the friction head connected to the connecting rod is higher than the other end, and the mounting seat is located on the side of the friction head away from the connecting rod.

[0009] In the above-mentioned denture wear resistance testing device, when the denture is tested for wear resistance, the friction conditions to which the denture is subjected can be continuously changed, thereby more realistically simulating the wear conditions of the denture in actual use.

[0010] As a further improvement of the present application, the friction head consists of a hard inner support body fixedly connected to the connecting rod and an elastic outer sleeve body sleeved on the outer wall of the hard inner support body. The elastic outer sleeve body is made of elastic wear-resistant material, including but not limited to polyurethane, natural rubber, and hydrogenated nitrile rubber. Under the elastic action of the elastic outer sleeve body, the friction head can fit better with the denture, thereby further improving the accuracy and reliability of detection.

[0011] As a further improvement of the present application, the connection between the elastic outer sleeve and the hard inner support body is a detachable fixed connection, so that when the friction head is severely worn, it is only necessary to remove the elastic outer sleeve and replace it, thereby reducing maintenance costs. An observation insert is embedded through the outer wall of the pseudo-cavity detection cabin, and the observation insert is made of transparent material, so that the inspector can observe the situation inside the pseudo-cavity detection cabin through the observation insert.

[0012] As another improvement of the present application, the detection device also includes a simulated saliva lubrication assembly, which includes a support plate fixedly mounted on the outer wall of the simulated cavity detection cabin, a liquid storage cylinder fixedly mounted on the support plate, the liquid storage cylinder is filled with saliva-simulating liquid, the saliva-simulating liquid is used to simulate saliva, and its lubrication performance matches that of the saliva in the human oral cavity, a liquid pump is fixedly mounted on the top of the liquid storage cylinder, and the suction end and output end of the liquid pump are respectively connected to a liquid suction pipe and a liquid spray pipe.

[0013] As another improvement supplement to the present application, the end of the liquid extraction tube away from the liquid extraction pump is connected to the interior of the liquid storage cylinder, the liquid spray tube passes through the outer wall of the simulated cavity detection cabin and extends to the interior of the simulated cavity detection cabin, the liquid spray tube is arranged in an L shape, and its end away from the liquid extraction pump is vertically downward and connected to a nozzle, and the nozzle is located directly above the mounting seat, so that during detection, the lubricating effect of saliva can be simulated by saliva-like liquid, thereby more realistically simulating the usage scenario of the denture.

[0014] As another improvement supplement of the present application, the bottom end of the pseudo-cavity detection cabin is configured to be conical, and a discharge pipe is connected to the middle of the bottom end of the pseudo-cavity detection cabin, so that waste liquid in the pseudo-cavity detection cabin can be discharged through the discharge pipe.

[0015] As another improvement of the present application, the detection device also includes a wear inspection intelligent control system, which includes a wear inspection control module, a quasi-lubrication control module, and a detection setting module. The detection setting module is signal-connected with the wear inspection control module and the quasi-lubrication control module, the wear inspection control module is signal-connected with the lifting cylinder and the friction cylinder, and the quasi-lubrication control module is signal-connected with the wear inspection control module and the liquid pump, which can improve the automation and intelligence of the detection device.

[0016] As another improvement and supplement to the present application, the grinding inspection intelligent control system also includes a temperature control module, and a temperature adjustment component is also arranged in the simulated cavity inspection cabin. The inspection setting module is signal-connected to the temperature adjustment control module, and the temperature adjustment control module is signal-connected to the temperature adjustment component, which can make the inspection scene closer to the usage scenario of the denture.

[0017] As another improvement supplement to the present application, the pseudo-cavity detection cabin and the cabin cover are made of thermal insulation material, an elastic thermal insulation film is arranged in the slide groove and is sealed and fixedly connected thereto, the hinged seat passes through the elastic thermal insulation film and is sealed and fixedly connected thereto, and the elastic thermal insulation film is made of elastic thermal insulation material, which can reduce heat loss and improve the energy-saving and environmental protection performance of the device.

[0018] In summary, the present application, through the combined arrangement of the lifting cylinder, the friction cylinder, the friction head assembly, etc., allows the friction conditions of the denture to be continuously changed during the wear resistance test of the denture, thereby more realistically simulating the wear conditions of the denture in actual use, thereby improving the accuracy and reliability of the test; through the arrangement of the simulated saliva lubrication assembly, during the test, the lubricating effect of saliva can be simulated by the saliva-simulating liquid, thereby more realistically simulating the use scenario of the denture, thereby further improving the accuracy and reliability of the test; through the combined arrangement of the wear detection intelligent control system, the temperature adjustment assembly, etc., not only the automation and intelligence of the detection device can be improved, but also the detection scenario can be made closer to the use scenario of the denture, thereby further improving the accuracy and reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the denture wear resistance testing device in the first embodiment of the present application;

[0020] Figure 2 This is a schematic cross-sectional view of the pseudo-cavity detection cabin in the first embodiment of the present application;

[0021] Figure 3 This is a schematic cross-sectional structure diagram of the friction head in the first embodiment of the present application;

[0022] Figure 4 This is a pictographic demonstration diagram of the wear resistance test of the denture in the first embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of a denture wear resistance testing device in the second embodiment of the present application;

[0024] Figure 6 This is a front view structural schematic diagram of a denture wear resistance testing device in a second embodiment of the present application;

[0025] Figure 7 This is a schematic cross-sectional view of the pseudo-cavity detection cabin in the second embodiment of the present application;

[0026] Figure 8 This is a system structure block diagram of the grinding inspection intelligent control system in the third embodiment of the present application.

[0027] Description of the numbers in the figure:

[0028] 101. Support base; 102. Lifting cylinder; 103. Simulated cavity detection cabin; 104. Hatch cover; 105. Support frame; 106. Friction cylinder; 107. Slide groove; 108. Mounting seat; 109. Discharge pipe; 110. Observation insert; 201. Slide rod; 202. Articulated seat; 203. Connecting rod; 003. Friction head; 301. Hard inner support body; 302. Elastic outer sleeve body; 401. Support plate; 402. Liquid storage cylinder; 403. Liquid extraction pump; 404. Liquid extraction pipe; 405. Liquid injection pipe; 406. Spray nozzle. DETAILED DESCRIPTION

[0029] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-Figure 4 A denture wear resistance testing device is shown, comprising a support base 101, a lifting cylinder 102 is fixedly mounted on the support base 101, a pseudo-cavity testing cabin 103 is fixedly connected to the output end of the lifting cylinder 102, the top of the pseudo-cavity testing cabin 103 is set to be open, and an openable cabin cover 104 is provided, a support frame 105 is also fixedly mounted on the support base 101, a friction cylinder 106 is fixedly mounted on the support frame 105, a mounting seat 108 for mounting a denture to be tested is fixedly mounted in the pseudo-cavity testing cabin 103, and a friction head assembly is provided on the output end of the friction cylinder 106;

[0032] The friction head assembly includes a sliding rod 201 fixedly connected to the output end of the friction cylinder 106, and a sliding groove 107 matching the friction cylinder 106 is opened on the outer wall of the pseudo-cavity detection cabin 103. The sliding rod 201 passes through the sliding groove 107 and is slidably connected thereto. The end of the sliding rod 201 away from the friction cylinder 106 is fixedly connected to a hinge seat 202, and a connecting rod 203 is hinged on the hinge seat 202, and a torsion spring is arranged at the hinge between the connecting rod 203 and the hinge seat 202. The end of the connecting rod 203 away from the hinge seat 202 is fixedly connected to the friction head 003, and the friction head 003 is arranged to be inclined, and the end of the friction head 003 connected to the connecting rod 203 is higher than the other end, and the mounting seat 108 is located on the side of the friction head 003 away from the connecting rod 203.

[0033] During the inspection, the hatch 104 is opened, and the denture to be inspected is installed on the mounting seat 108 (the installation of the denture adopts the existing technology, and those skilled in the art can select a suitable installation method according to the type and material of the denture, for example, the denture can be fixed to the mounting seat 108 by a dental adhesive), and the position of the denture at this time is assumed to be the initial position of the denture, and the friction cylinder 106 is controlled to push the friction head assembly until the friction head 003 moves to the top of the denture, and then the lifting cylinder 102 is controlled to push the pseudo-cavity inspection cabin 103 upwards, and after the denture and the friction head 003 are against each other, Continue to make the lifting cylinder 102 push the simulated cavity detection cabin 103 upward until the friction head 003 is in a horizontal state (when the simulated cavity detection cabin 103 continues to move upward, the denture that abuts against the friction head 003 will push the friction head 003 upward, causing the friction head 003 and the connecting rod 203 to swing upward), and assume that the position of the denture at this time is the base point position of the denture, and then control the friction cylinder 106 to pull the friction head 003 back and forth, so that the friction head 003 repeatedly rubs the denture, and then detects the wear resistance of the denture. During the detection process, while the friction cylinder 106 pulls the friction head 003 back and forth, the lifting cylinder 102 is controlled to drive the simulated cavity detection cabin 103 The cavity detection chamber 103 moves up and down back and forth, causing the denture to move back and forth above and below its base position (the highest point of the back and forth movement is above the base position, and the lowest point is below the base position, but must not be lower than the initial position of the denture, and the denture must always remain against the friction head 003). When the denture moves above the base position, the friction head 003 will swing upward and tilt, and when the denture moves below the base position, the friction head 003 will swing downward and tilt, so that in this process, the contact and relative movement between the friction head 003 and the denture will continue to change, thereby causing the friction condition of the denture to continue to change. After the test, the denture is taken out, its wear condition is checked, and its wear resistance is evaluated whether it is qualified. The inspection of the denture wear condition and the evaluation of the wear resistance adopt existing technologies, such as the relevant technologies disclosed in Chinese patents with publication numbers CN117495862B, CN117347217B, etc. Therefore, through the joint arrangement of the lifting cylinder 102, the friction cylinder 106, the friction head assembly, etc., when the wear resistance of the denture is tested, the friction condition of the denture can be continuously changed, so as to more realistically simulate the wear condition of the denture in actual use, thereby improving the accuracy and reliability of the test.

[0034] The friction head 003 is composed of a hard inner support body 301 fixedly connected to the connecting rod 203 and an elastic outer sleeve 302 sleeved on the outer wall of the hard inner support body 301. Optionally, the elastic outer sleeve 302 is made of elastic wear-resistant material, including but not limited to polyurethane, natural rubber, hydrogenated nitrile rubber. Under the elastic action of the elastic outer sleeve 302, the friction head 003 can better fit the denture, thereby further improving the accuracy and reliability of the detection. It should be noted that the elastic outer sleeve 302 does not have to be made of elastic wear-resistant material, but can also be other suitable materials. Technical personnel in this field can choose suitable materials to make the elastic outer sleeve 302 according to the actual situation.

[0035] The connection between the elastic outer shell 302 and the hard inner support body 301 is a detachable fixed connection, so that when the friction head 003 is severely worn, it is only necessary to remove the elastic outer shell 302 and replace the elastic outer shell 302, which can reduce maintenance costs. An observation insert 110 is embedded through the outer wall of the pseudo-cavity detection cabin 103. The observation insert 110 is made of transparent material, so that the detection personnel can observe the situation in the pseudo-cavity detection cabin 103 through the observation insert 110.

[0036] The second implementation method:

[0037] Figure 5-Figure 7 A denture wear resistance testing device is shown. Different from the first embodiment, the testing device also includes a saliva-like lubrication component, which includes a support plate 401 fixedly mounted on the outer wall of the simulated cavity testing chamber 103, and a liquid storage cylinder 402 is fixedly mounted on the support plate 401. The liquid storage cylinder 402 is filled with saliva-like liquid. The saliva-like liquid is used to simulate saliva, and its lubrication performance matches that of the saliva in the human oral cavity (the saliva-like liquid is accurately formulated according to the real saliva composition, and contains key components such as mucin, globulin, and water). A liquid pump 403 is fixedly installed on the top of the cylinder 402, and the suction end and output end of the liquid pump 403 are respectively connected to a liquid suction pipe 404 and a liquid spray pipe 405. The end of the liquid suction pipe 404 away from the liquid pump 403 is connected to the interior of the liquid storage cylinder 402, and the liquid spray pipe 405 penetrates the outer wall of the pseudo-cavity detection cabin 103 and extends to the interior of the pseudo-cavity detection cabin 103. The liquid spray pipe 405 is set to be L-shaped, and its end away from the liquid pump 403 is vertically downward and connected to a nozzle 406, and the nozzle 406 is located directly above the mounting seat 108.

[0038] When people chew, the saliva in the mouth can play a good lubricating role, which can effectively reduce the wear of the denture. The detection device in the prior art usually directly performs a friction and wear test on the denture when detecting the wear resistance of the denture, ignoring the lubricating effect of saliva in the actual application scenario of the denture, which will also have a great impact on the detection result. In this embodiment, during the detection, after the denture is installed on the mounting seat 108, before the friction cylinder 106 is controlled to push the friction head assembly, the liquid pump 403 can be started first, so that the liquid pump 403 extracts an appropriate amount of saliva-like liquid and passes the liquid spray pipe 4 05. The nozzle 406 sprays the saliva-simulating liquid onto the surface of the mounting seat 108. After the friction head 003 moves to the top of the denture, an appropriate amount of saliva-simulating liquid can be extracted by the liquid extraction pump 403 and sprayed onto the surface of the mounting seat 108. In addition, during the detection process, the saliva-simulating liquid can be periodically sprayed onto the denture surface and the friction head 003 surface through the saliva-simulating lubrication component. Therefore, through the setting of the saliva-simulating lubrication component, the lubricating effect of saliva can be simulated by the saliva-simulating liquid during the detection, so as to more realistically simulate the use scenario of the denture, thereby further improving the accuracy and reliability of the detection.

[0039] The bottom end of the pseudo-cavity detection chamber 103 is configured to be conical, and a discharge pipe 109 is connected to the middle of the bottom end of the pseudo-cavity detection chamber 103 , so that waste liquid in the pseudo-cavity detection chamber 103 can be discharged through the discharge pipe 109 .

[0040] The third implementation method:

[0041] See also Figure 8 Unlike the first and second embodiments, the detection device also includes a wear inspection intelligent control system, which includes a wear inspection control module, a pseudo-lubrication control module, and a detection setting module. The detection setting module is signal-connected to the wear inspection control module and the pseudo-lubrication control module. The wear inspection control module is signal-connected to the lifting cylinder 102 and the friction cylinder 106. The pseudo-lubrication control module is signal-connected to the wear inspection control module and the liquid pump 403. The detection setting module is used to set detection parameters. The wear inspection control module is used to control the lifting cylinder 102 and the friction cylinder 106 according to the set detection parameters to detect the wear resistance of the denture. The pseudo-lubrication control module is used to control the liquid pump 403 to spray saliva-simulated liquid onto the denture and the friction head 003 according to the set detection parameters. Before the pseudo-lubrication control module controls the liquid pump 403 to spray the saliva-simulated liquid, it will send a signal to the wear inspection control module so that the wear inspection control module cooperates with the pseudo-lubrication control module to complete the spraying of the saliva-simulated liquid, thereby improving the automation and intelligence of the detection device.

[0042] The grinding inspection intelligent control system also includes a temperature adjustment control module, and a temperature adjustment component is also arranged in the simulated cavity inspection cabin 103. The detection setting module is signal-connected to the temperature adjustment control module, and the temperature adjustment control module is signal-connected to the temperature adjustment component. During the detection, the temperature adjustment control module will control the temperature adjustment component to adjust the temperature in the simulated cavity inspection cabin 103, so that the temperature in the simulated cavity inspection cabin 103 is maintained at about 36-37°C, which is in line with the actual oral temperature, so that the detection scene can be made closer to the use scene of the denture, further improving the accuracy and reliability of the detection. The temperature adjustment component adopts the existing technology, and those skilled in the art can select a suitable device with temperature adjustment function in the existing technology as the temperature adjustment component in this application, which will not be elaborated here.

[0043] The pseudo-cavity detection cabin 103 and the cabin cover 104 are both made of thermal insulation materials. An elastic thermal insulation film is provided in the slide groove 107 and is sealed and fixedly connected thereto. The slide rod 201 penetrates the elastic thermal insulation film and is sealed and fixedly connected thereto. The elastic thermal insulation film is made of elastic thermal insulation material, which can reduce heat loss and improve the energy-saving and environmental protection performance of the device.

[0044] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A denture wear resistance testing device, comprising a support base (101), characterized in that: A lifting cylinder (102) is fixedly mounted on the support base (101); the output end of the lifting cylinder (102) is fixedly connected to a simulated cavity detection cabin (103); the top of the simulated cavity detection cabin (103) is arranged in an open shape and is provided with an openable cabin cover (104); a support frame (105) is also fixedly mounted on the support base (101); a friction cylinder (106) is fixedly mounted on the support frame (105); a mounting seat (108) for mounting a denture to be detected is fixedly mounted in the simulated cavity detection cabin (103); a friction head assembly is arranged on the output end of the friction cylinder (106); the friction head assembly comprises a sliding rod (201) fixedly connected to the output end of the friction cylinder (106); A slide groove (107) matching the friction cylinder (106) is provided on the outer wall, the slide rod (201) passes through the slide groove (107) and is slidably connected thereto, one end of the slide rod (201) away from the friction cylinder (106) is fixedly connected to a hinge seat (202), a connecting rod (203) is hinged on the hinge seat (202), and a torsion spring is provided at the hinge between the connecting rod (203) and the hinge seat (202), one end of the connecting rod (203) away from the hinge seat (202) is fixedly connected to a friction head (003), the friction head (003) is arranged in an inclined shape, and one end of the friction head (003) connected to the connecting rod (203) is higher than the other end thereof, and the mounting seat (108) is located on the side of the friction head (003) away from the connecting rod (203).

2. A denture wear resistance detection device according to claim 1, characterized in that: The friction head (003) is composed of a hard inner support body (301) fixedly connected to the connecting rod (203) and an elastic outer shell (302) sleeved on the outer wall of the hard inner support body (301), and the elastic outer shell (302) is made of elastic wear-resistant material, and the elastic wear-resistant material includes but is not limited to polyurethane, natural rubber, and hydrogenated nitrile rubber. The connection between the elastic outer shell (302) and the hard inner support body (301) is a detachable fixed connection. An observation insert (110) is embedded through the outer wall of the pseudo-cavity detection cabin (103), and the observation insert (110) is made of transparent material.

3. A denture wear resistance detection device according to claim 1, characterized in that: The invention also comprises a simulated saliva lubrication component, wherein the simulated saliva lubrication component comprises a support plate (401) fixedly mounted on the outer wall of the simulated cavity detection cabin (103), a liquid storage cylinder (402) fixedly mounted on the support plate (401), the liquid storage cylinder (402) being filled with saliva-simulating liquid, the saliva-simulating liquid being used to simulate saliva, and its lubrication performance matches that of saliva in the human oral cavity, a liquid extraction pump (403) being fixedly mounted on the top end of the liquid storage cylinder (402), and the suction end and the output end of the liquid extraction pump (403) being respectively connected to a liquid extraction pipe (404) and a liquid spray pipe (405).

4. A denture wear resistance detection device according to claim 3, characterized in that: The end of the liquid extraction tube (404) away from the liquid extraction pump (403) is connected to the interior of the liquid storage cylinder (402), and the liquid injection tube (405) passes through the outer wall of the pseudo-cavity detection cabin (103) and extends to the interior of the pseudo-cavity detection cabin (103). The liquid injection tube (405) is configured to be L-shaped, and the end away from the liquid extraction pump (403) is vertically downward and connected to a nozzle (406), and the nozzle (406) is located directly above the mounting seat (108).

5. A denture wear resistance testing device according to claim 4, characterized in that: The bottom end of the pseudo-cavity detection chamber (103) is configured to be conical, and the middle of the bottom end of the pseudo-cavity detection chamber (103) is connected to a discharge pipe (109).

6. The denture wear resistance testing device according to claim 1, characterized in that: The invention also includes a wear inspection intelligent control system, which includes a wear inspection control module, a pseudo-lubrication control module, and a detection setting module. The detection setting module is signal-connected to the wear inspection control module and the pseudo-lubrication control module. The wear inspection control module is signal-connected to the lifting cylinder (102) and the friction cylinder (106). The pseudo-lubrication control module is signal-connected to the wear inspection control module and the liquid extraction pump (403).

7. A denture wear resistance testing device according to claim 6, characterized in that: The grinding inspection intelligent control system also includes a temperature adjustment control module. The simulated cavity inspection chamber (103) is also provided with a temperature adjustment component. The inspection setting module is signal-connected to the temperature adjustment control module, and the temperature adjustment control module is signal-connected to the temperature adjustment component.

8. The device for detecting the wear resistance of dentures according to claim 7, characterized in that: The simulated cavity detection cabin (103) and the cabin cover (104) are both made of thermal insulation material. An elastic thermal insulation film is provided in the slide groove (107) and is sealed and fixedly connected thereto. The hinge seat (202) passes through the elastic thermal insulation film and is sealed and fixedly connected thereto. The elastic thermal insulation film is made of elastic thermal insulation material.

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