Strength detection device for inner cavity of shell

Abstract

The invention discloses a strength detection device for an inner cavity of a shell, and belongs to the field of mechanical strength detection. The strength detection device for the inner cavity of the shell comprises a first sealing cover and a second sealing cover, the first sealing cover comprises a first cover body, a connecting rod and a first locking piece, the first cover body is connected with the first end of the connecting rod, a water inlet channel is formed in the first cover body, the first end of the water inlet channel is located on the face, back to the connecting rod, of the first cover body, a water outlet channel is formed in the connecting rod, and the first end of the water outlet channel is connected with the second end of the water inlet channel. The second end of the water outlet channel is located on the outer side wall of the connecting rod, the second end of the connecting rod is inserted into the second sealing cover, the first locking piece is detachably connected with the connecting rod, and the first locking piece abuts against the face, back on to the first cover body, of the second sealing cover. The strength detection device provided by the embodiment of the invention is simple and convenient to install, and the detection efficiency can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of mechanical strength detection, and in particular to a strength detection device for an inner cavity of a shell. Background Art

[0002] The shell is a common part in mechanical devices. There is a shell that is used in underwater piercing sealing devices of ship hulls. Since the shell is installed on the wall of the hull and its inner cavity is under pressure, it is necessary to test the strength of the inner cavity of the shell before it is officially delivered for use to avoid damage, leakage and other problems during use.

[0003] In the related art, the strength of the inner cavity of the shell is tested by a strength testing device, which includes two covers and a plurality of long-rod studs. The two covers are respectively placed at the two ends of the shell and fixed by the plurality of long-rod studs.

[0004] However, when installing the above-mentioned strength detection device, the two covers need to be adjusted synchronously and then a plurality of long-rod bolts need to be installed, so the installation process is very cumbersome, resulting in low detection efficiency. Summary of the invention

[0005] The embodiment of the present disclosure provides a strength detection device for the inner cavity of a shell, which is easy to install and can improve the detection efficiency. The technical solution is as follows:

[0006] The embodiment of the present disclosure provides a strength detection device for a housing inner cavity, comprising a first sealing cover and a second sealing cover;

[0007] The first cover comprises a first cover body, a connecting rod and a first locking member, wherein the first cover body is connected to the first end of the connecting rod, a water inlet channel is provided in the first cover body, the first end of the water inlet channel is located on a side of the first cover body facing away from the connecting rod, a water outlet channel is provided in the connecting rod, the first end of the water outlet channel is connected to the second end of the water inlet channel, the second end of the water outlet channel is located on the outer side wall of the connecting rod, the second end of the connecting rod is inserted into the second cover, the first locking member is detachably connected to the connecting rod, and the first locking member abuts against a side of the second cover facing away from the first cover body.

[0008] In an implementation of the present disclosure, the first cover body includes a flange plate and a boss;

[0009] The outer diameter of the boss is smaller than the outer diameter of the flange plate, one end of the boss is connected to one side of the flange plate, and the other end of the boss is connected to the first end of the connecting rod;

[0010] A first sealing ring is provided on one side of the flange plate connected to the boss, and the first sealing ring is arranged around the boss.

[0011] In one implementation of the present disclosure, the water inlet channel includes a water inlet plug hole and a connecting channel;

[0012] The inner diameter of the water inlet socket is larger than the inner diameter of the connecting channel. The water inlet socket is located on a side of the first cover body facing away from the connecting rod. The connecting channel is respectively connected to the water inlet socket and the water outlet channel.

[0013] In one implementation of the present disclosure, a locking groove is provided in the water inlet socket;

[0014] The locking groove is located on the hole wall of the water inlet socket, and the locking groove extends along the circumference of the water inlet socket. The locking groove is used to accommodate the locking flange of the water pipe.

[0015] In one implementation of the present disclosure, a plurality of water outlet channels are provided in the connecting rod;

[0016] Each of the water outlet channels is connected to the second end of the water inlet channel respectively.

[0017] In an implementation of the present disclosure, the plurality of water outlet channels are located in the same plane, and the first ends of the plurality of water outlet channels intersect at the axis of the connecting rod, and the second ends of the plurality of water outlet channels are arranged in circumferential intervals in sequence with the axis of the connecting rod as the axis.

[0018] In one implementation of the present disclosure, the outer side wall of the connecting rod has a second sealing ring;

[0019] The second sealing ring is close to the second end of the connecting rod, the second sealing ring extends along the circumference of the connecting rod, and the second sealing ring is sandwiched between the outer side wall of the connecting rod and the second cover.

[0020] In one implementation of the present disclosure, the outer side wall of the connecting rod has an external thread, the external thread extends along the axial direction of the connecting rod, and the external thread is close to the second end of the connecting rod;

[0021] The first locking member is threadably matched with the external thread.

[0022] In one implementation of the present disclosure, the second cover includes a second cover body and a second locking member;

[0023] The second cover body has a plurality of mounting holes, and the mounting holes are arranged in circumferential intervals in sequence along the outer edge of the second cover body;

[0024] The second locking members correspond to the mounting holes one by one, and the second locking members are inserted into the corresponding mounting holes.

[0025] In an implementation of the present disclosure, a side of the second cover body facing the first sealing cover has a third sealing ring;

[0026] The third sealing ring extends along the circumference of the second cover body and is located between the second locking member and the first locking member.

[0027] The beneficial effects brought by the technical solution provided by the embodiments of the present disclosure include at least:

[0028] The strength detection device provided by the embodiment of the present disclosure can detect the strength of the inner cavity of the shell. During the detection process, first, the connecting rod is passed through the inner cavity of the shell so that the second end of the connecting rod is located at the second end of the shell, and the first cover body is against the first end of the shell. Then, the second cover is mounted on the second end of the connecting rod so that the second cover is against the second end of the shell. In this state, since there is an assembly relationship between the second cover and the first cover through the connecting rod, the position between the two can be determined synchronously, thereby completing the position adjustment. Next, the first locking member is connected to the connecting rod so that the first locking member and the side of the second cover facing away from the first cover body are against each other, so that the first cover and the second cover can clamp the cavity, thereby completing the installation of the strength detection device. Finally, water is injected from the first end of the water inlet channel so that the water flows through the water inlet channel and the water outlet channel in sequence, and finally flows into the inner cavity of the shell from the second end of the water outlet channel, so that the inner cavity of the shell can be pressurized to detect the strength of the inner cavity of the shell.

[0029] That is to say, the strength detection device provided in the embodiment of the present disclosure can connect the first cover and the second cover together through the connecting rod, so as to achieve position synchronization between the two, and there is no need to adjust the positions of the two separately, which effectively improves the convenience of installation and detection efficiency. In addition, the first cover and the second cover can be fixed on the housing through the first locking member, and there is no need to install multiple long rod studs as mentioned in the related art, thereby further improving the convenience of installation and detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of the structure of a strength detection device for an inner cavity of a shell provided in an embodiment of the present disclosure.

[0032] Meaning of the figures:

[0033] 10. First cover;

[0034] 110, first cover body; 111, flange plate; 112, boss;

[0035] 120, connecting rod;

[0036] 130. A first locking member;

[0037] 140, water inlet channel; 141, water inlet jack; 142, connecting channel; 143, locking groove;

[0038] 150. Water outlet channel;

[0039] 160, first sealing ring;

[0040] 170, second sealing ring;

[0041] 20. Second cover;

[0042] 210, second cover; 221, mounting hole; 220, second locking member; 230, third sealing ring;

[0043] 100. Shell. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0045] The shell is a common part in mechanical devices. There is a shell that is used in underwater piercing sealing devices of ship hulls. Since the shell is installed on the wall of the hull and its inner cavity is under pressure, it is necessary to test the strength of the inner cavity of the shell before it is officially delivered for use to avoid damage, leakage and other problems during use.

[0046] In the related art, the strength of the inner cavity of the shell is tested by a strength testing device, which includes two covers and a plurality of long-rod studs. The two covers are respectively placed at the two ends of the shell and fixed by the plurality of long-rod studs.

[0047] However, when installing the above-mentioned strength detection device, the two covers need to be adjusted synchronously and then a plurality of long-rod bolts need to be installed, so the installation process is very cumbersome, resulting in low detection efficiency.

[0048] In order to solve the above technical problems, the present disclosure provides a strength detection device for the inner cavity of a shell. Figure 1 This is a schematic diagram of the structure of the strength detection device. In order to better demonstrate the use of the strength detection device, Figure 1 A housing 100 is also added. Figure 1In this embodiment, the strength detection device includes: a first cover 10 and a second cover 20.

[0049] The first cover 10 includes a first cover body 110, a connecting rod 120 and a first locking member 130. The first cover body 110 is connected to a first end of the connecting rod 120. A water inlet channel 140 is provided in the first cover body 110. The first end of the water inlet channel 140 is located on a side of the first cover body 110 facing away from the connecting rod 120. A water outlet channel 150 is provided in the connecting rod 120. The first end of the water outlet channel 150 is connected to a second end of the water inlet channel 140. The second end of the water outlet channel 150 is located on an outer side wall of the connecting rod 120. The second end of the connecting rod 120 is inserted into the second cover 20. The first locking member 130 is detachably connected to the connecting rod 120, and the first locking member 130 abuts against a side of the second cover 20 facing away from the first cover body 110.

[0050] The strength detection device provided by the embodiment of the present disclosure can detect the strength of the inner cavity of the shell. During the detection process, first, the connecting rod 120 is passed through the inner cavity of the shell so that the second end of the connecting rod 120 is located at the second end of the shell 100, and the first cover body 110 is against the first end of the shell 100. Then, the second cover 20 is fitted to the second end of the connecting rod 120 so that the second cover 20 is against the second end of the shell 100. In this state, since there is an assembly relationship between the second cover 20 and the first cover 10 through the connecting rod 120, the position between the two can be determined synchronously, thereby completing the position adjustment. Next, the first locking member 130 is connected to the connecting rod 120 so that the first locking member 130 is against the side of the second cover 20 facing away from the first cover body 110, so that the first cover 10 and the second cover 20 can clamp the cavity, thereby completing the installation of the strength detection device. Finally, water is injected from the first end of the water inlet channel 140, so that the water flows through the water inlet channel 140 and the water outlet channel 150 in sequence, and finally flows into the shell cavity from the second end of the water outlet channel 150, so that the shell cavity can be pressurized to detect the strength of the shell cavity.

[0051] That is to say, the strength detection device provided in the embodiment of the present disclosure can connect the first cover 10 and the second cover 20 together through the connecting rod 120, so as to achieve position synchronization between the two, and there is no need to adjust the positions of the two separately, which effectively improves the convenience of installation and detection efficiency. In addition, the first cover 10 and the second cover 20 can be fixed on the housing 100 through the first locking member 130, and there is no need to install multiple long rod studs as mentioned in the related art, thereby further improving the convenience of installation and detection efficiency.

[0052] Continue to see Figure 1 In this embodiment, the first cover body 110 includes a flange plate 111 and a boss 112 .

[0053] The outer diameter of the boss 112 is smaller than the outer diameter of the flange plate 111. One end of the boss 112 is connected to one side of the flange plate 111, and the other end of the boss 112 is connected to the first end of the connecting rod 120. The side of the flange plate 111 connected to the boss 112 has a first sealing ring 160, which is arranged around the boss 112.

[0054] During the assembly of the first cover 110 , the boss 112 is inserted into the first end of the housing 100 to provide positioning. The flange plate 111 abuts against the first end of the housing 100 , and the first sealing ring 160 is used to achieve sealing between the flange plate 111 and the housing 100 .

[0055] Exemplarily, the shapes of the flange plate 111 and the boss 112 match the shape of the housing 100. For example, if the outer contour and the inner contour of the housing 100 are both cylindrical, then correspondingly, the flange plate 111 and the boss 112 are both disc-shaped structural members, the outer edge of the flange plate 111 is flush with the outer side wall of the housing 100, and the outer side wall of the boss 112 is in contact with the inner side wall of the housing 100. Such a design can better achieve mutual assembly between the first cover 110 and the housing 100.

[0056] When the flange plate 111 and the boss 112 are both disc-shaped structural members, the flange plate 111 and the boss 112 are coaxially arranged.

[0057] Exemplarily, the first sealing ring 160 is a rubber O-ring.

[0058] For example, the flange plate 111, the boss 112, and the connecting rod 120 are integrated structural parts. Such a design can improve the manufacturing efficiency of the first cover 10 on the one hand, and can also ensure the structural strength of the first cover 10 on the other hand, so as to improve the reliability of the strength detection device.

[0059] Continue to see Figure 1 In this embodiment, the water inlet channel 140 includes a water inlet plug hole 141 and a connecting channel 142 .

[0060] The inner diameter of the water inlet hole 141 is larger than the inner diameter of the connecting channel 142 . The water inlet hole 141 is located on the side of the first cover body 110 facing away from the connecting rod 120 . The connecting channel 142 is connected to the water inlet hole 141 and the water outlet channel 150 , respectively.

[0061] In the above implementation, the water inlet jack 141 is used for plugging the water supply pipe, and the connecting hole 142 is used to transmit the water flow to the water outlet channel 150. Since the inner diameter of the water inlet jack 141 is larger than the inner diameter of the connecting hole 142, it is convenient to plug the water pipe to improve the detection efficiency.

[0062] In this embodiment, a locking groove 143 is defined in the water inlet socket 141 .

[0063] The locking groove 143 is located on the hole wall of the water inlet plug hole 141 , and the locking groove 143 extends along the circumference of the water inlet plug hole 141 . The locking groove 143 is used to accommodate the locking flange of the water pipe.

[0064] The outer wall of the water pipe has a locking flange, which is close to the end of the water pipe. When the water pipe is plugged into the water inlet socket 141, the locking flange can be snapped into the locking groove 143, thereby achieving mutual locking between the water pipe and the water inlet socket 141.

[0065] For example, the locking flange has a certain elasticity and can generate a certain elastic deformation during the process of being plugged into the water inlet socket 141 so as to enter the locking groove 143. Moreover, after the locking flange enters the locking groove 143, the elastic property can be released to achieve the snap connection in the locking groove 143.

[0066] In some examples, the locking flange is made of elastic rubber, which can realize the snap-fit ​​function on the one hand, and also play a sealing role on the other hand, thereby preventing water leakage from the gap between the water pipe and the water inlet socket 141 .

[0067] In other examples, the locking flange is an elastic retaining spring, which can further ensure the secure connection between the locking flange and the locking groove 143 .

[0068] In this embodiment, a plurality of water outlet channels 150 are formed in the connecting rod 120 , and each water outlet channel 150 is connected to the second end of the water inlet channel 140 .

[0069] In the above implementation, multiple water outlet channels 150 are provided, which can improve the water outlet efficiency on the one hand, and make the water outlet more uniform on the other hand, thereby avoiding a sudden increase in water pressure at a certain place.

[0070] Exemplarily, the plurality of water outlet channels 150 are located in the same plane, and the first ends of the plurality of water outlet channels 150 intersect at the axis of the connecting rod 120 , and the second ends of the plurality of water outlet channels 150 are arranged circumferentially in sequence with the axis of the connecting rod 120 as the axis.

[0071] Such arrangement of the water outlet channel 150 simplifies the processing difficulty of the water outlet channel 150 while ensuring the functionality of the water outlet channel 150 .

[0072] Continue to see Figure 1 In this embodiment, the outer side wall of the connecting rod 120 has a second sealing ring 170 .

[0073] The second sealing ring 170 is close to the second end of the connecting rod 120 . The second sealing ring 170 extends along the circumference of the connecting rod 120 . The second sealing ring 170 is sandwiched between the outer side wall of the connecting rod 120 and the second cover 20 .

[0074] In the above implementation, the second sealing ring 170 can achieve sealing between the connecting rod 120 and the second cover 20, thereby avoiding water leakage between the connecting rod 120 and the second cover 20, thereby ensuring the reliability of strength detection.

[0075] Exemplarily, the second sealing ring 170 is a rubber O-ring.

[0076] In this embodiment, the outer side wall of the connecting rod 120 has an external thread, which extends along the axial direction of the connecting rod 120 and is close to the second end of the connecting rod 120 . The first locking member 130 is threadably matched with the external thread.

[0077] In the above implementation, the first locking member 130 is a nut, and the first locking member 130 and the connecting rod 120 are threadedly matched. By screwing the first locking member 130, the first locking member 130 and the second cover 20 can be tightly abutted against each other, so that the cylinder is clamped between the first cover 10 and the second cover 20.

[0078] Exemplarily, a gasket is further provided between the first locking member 130 and the second cover 20 to prevent the first locking member 130 from loosening.

[0079] Continue to see Figure 1 In this embodiment, the second cover 20 includes a second cover body 210 and a second locking member 220 .

[0080] The second cover 210 has a plurality of mounting holes 221 , which are arranged circumferentially and spaced apart in sequence along the outer edge of the second cover 210 . The second locking members 220 correspond to the mounting holes 221 one by one, and the second locking members 220 are inserted into the corresponding mounting holes 221 .

[0081] In the above implementation, the second locking member 220 is used to enhance the sealing reliability between the second cover 20 and the housing 100 to ensure that the second cover 20 can be tightly pressed against the housing 100 .

[0082] It is worth noting that the second end of the housing 100 itself has a plurality of through holes, and the mounting holes 221 on the second cover 210 are designed based on the through holes on the housing 100. In other embodiments, if the second end of the housing 100 does not have through holes, then the second cover 210 does not need to be provided with mounting holes 221, and the second locking member 220 does not need to be provided. In this case, the second cover 20 can also be pressed tightly against the second end of the housing 100 only by the action of the first locking member 130.

[0083] Exemplarily, the second locking member 220 is a bolt and nut set, and the second locking member 220 can further ensure the tight contact between the second cover 210 and the housing 100 .

[0084] Exemplarily, a surface of the second cover body 210 facing the first sealing cover 10 has a third sealing ring 230 .

[0085] The third sealing ring 230 extends along the circumference of the second cover 210 and is located between the second locking member 220 and the first locking member 130 .

[0086] In the above implementation, the third sealing ring 230 is sandwiched between the second cover 210 and the housing 100, so as to achieve sealing between the second cover 210 and the housing 100. In addition, since the third sealing ring 230 is located between the second locking member 220 and the first locking member 130, it will not interfere with the installation of the first locking member 130 and the second locking member 220.

[0087] Exemplarily, the third sealing ring 230 is a rubber O-ring.

[0088] The following is a brief introduction to the use of the strength detection device:

[0089] 1. Pass the connecting rod 120 through the inner cavity of the shell so that the second end of the connecting rod 120 is located at the second end of the shell 100, the boss 112 of the first cover body 110 is inserted into the first end of the shell 100, and the flange plate 111 of the first cover body 110 is against the first end of the shell 100.

[0090] 2. Put the second cover body 210 onto the second end of the connecting rod 120 so that the second cover body 210 abuts against the second end of the housing 100 .

[0091] 3. Connect the first locking member 130 to the connecting rod 120 so that the first locking member 130 is pressed tightly against the second cover 210, thereby clamping the housing 100 between the first cover 110 and the second cover 210, and completing the positioning and installation of the first cover 110 and the second cover 210 on the housing 100.

[0092] 4. Install the second locking members 220 respectively to further ensure the assembly stability between the second cover 210 and the housing 100 .

[0093] 5. Insert the water pipe into the water inlet socket 141 so that the locking flange on the water pipe and the locking groove 143 in the water inlet socket 141 are engaged with each other.

[0094] 6. Inject water into the inner cavity of the shell through a water pipe to pressurize it and observe whether there is any leakage to detect the strength of the inner cavity of the shell.

[0095] During the detection process, the strength detection device provided by the embodiment of the present disclosure can connect the first cover 10 and the second cover 20 together through the connecting rod 120, thereby achieving position synchronization between the two, and no longer needing to adjust the positions of the two separately, effectively improving installation convenience and detection efficiency. In addition, the first cover 10 and the second cover 20 can be fixed on the housing 100 through the first locking member 130, and no longer needing to install multiple long rod studs as mentioned in the related art, thereby further improving installation convenience and detection efficiency.

[0096] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second", "third" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "top", "bottom" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0097] The above does not limit the present disclosure in any form. Although the present disclosure has been disclosed as above through the embodiments, it is not used to limit the present disclosure. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present disclosure. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present disclosure without departing from the content of the technical solution of the present disclosure still falls within the scope of the technical solution of the present disclosure.

Claims

1. A strength detection device for a shell cavity, characterized in that: It comprises a first cover (10) and a second cover (20); The first cover (10) comprises a first cover body (110), a connecting rod (120) and a first locking member (130); the first cover body (110) is connected to a first end of the connecting rod (120); a water inlet channel (140) is provided in the first cover body (110); a first end of the water inlet channel (140) is located on a side of the first cover body (110) facing away from the connecting rod (120); a water outlet channel (150) is provided in the connecting rod (120); The first end of the water channel (150) is connected to the second end of the water inlet channel (140), the second end of the water outlet channel (150) is located on the outer wall of the connecting rod (120), the second end of the connecting rod (120) is inserted into the second cover (20), the first locking member (130) is detachably connected to the connecting rod (120), and the first locking member (130) abuts against a side of the second cover (20) facing away from the first cover body (110).

2. The strength detection device according to claim 1, characterized in that: The first cover body (110) comprises a flange plate (111) and a boss (112); The outer diameter of the boss (112) is smaller than the outer diameter of the flange plate (111), one end of the boss (112) is connected to one side of the flange plate (111), and the other end of the boss (112) is connected to the first end of the connecting rod (120); A first sealing ring (160) is provided on one side of the flange plate (111) connected to the boss (112), and the first sealing ring (160) is arranged around the boss (112).

3. The strength detection device according to claim 1, characterized in that: The water inlet channel (140) comprises a water inlet plug hole (141) and a connecting channel (142); The inner diameter of the water inlet plug hole (141) is larger than the inner diameter of the connecting channel (142); the water inlet plug hole (141) is located on a side of the first cover body (110) facing away from the connecting rod (120); and the connecting channel (142) is respectively connected to the water inlet plug hole (141) and the water outlet channel (150).

4. The strength detection device according to claim 3, characterized in that: The water inlet plug hole (141) has a locking groove (143); The locking groove (143) is located on the hole wall of the water inlet plug hole (141), and the locking groove (143) extends along the circumference of the water inlet plug hole (141). The locking groove (143) is used to accommodate the locking flange of the water pipe.

5. The strength detection device according to claim 1, characterized in that: The connecting rod (120) has a plurality of water outlet channels (150); Each of the water outlet channels (150) is respectively connected to the second end of the water inlet channel (140).

6. The strength detection device according to claim 5, characterized in that: The plurality of water outlet channels (150) are located in the same plane, and the first ends of the plurality of water outlet channels (150) intersect at the axis of the connecting rod (120), and the second ends of the plurality of water outlet channels (150) are arranged in circumferential intervals in sequence with the axis of the connecting rod (120) as the axis.

7. The strength detection device according to claim 1, characterized in that: The outer side wall of the connecting rod (120) has a second sealing ring (170); The second sealing ring (170) is close to the second end of the connecting rod (120), the second sealing ring (170) extends along the circumference of the connecting rod (120), and the second sealing ring (170) is clamped between the outer side wall of the connecting rod (120) and the second cover (20).

8. The strength detection device according to claim 1, characterized in that: The outer wall of the connecting rod (120) has an external thread, the external thread extends along the axial direction of the connecting rod (120), and the external thread is close to the second end of the connecting rod (120); The first locking member (130) is threadably matched with the external thread.

9. The strength detection device according to claim 1, characterized in that: The second cover (20) comprises a second cover body (210) and a second locking member (220); The second cover body (210) has a plurality of mounting holes (221), and the mounting holes (221) are sequentially arranged at intervals in the circumferential direction along the outer edge of the second cover body (210); The second locking member (220) corresponds to the mounting hole (221) one by one, and the second locking member (220) is inserted into the corresponding mounting hole (221).

10. The strength detection device according to claim 9, characterized in that: A side of the second cover body (210) facing the first sealing cover (10) has a third sealing ring (230); The third sealing ring (230) extends along the circumference of the second cover body (210) and is located between the second locking member (220) and the first locking member (130).

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