Intelligent spare parts cabinet for precision instruments of ships and monitoring method therein

Abstract

The invention discloses an intelligent spare parts cabinet for precision instruments for ships, comprising a cabinet body, at least one partition plate is arranged in the cabinet body, the partition plate has at least one instrument placement position, a central island which retracts downward after being pressed is arranged in the center of the instrument placement position, when the instrument is placed horizontally on the instrument placement position, the central island retracts downward under the action of the gravity of the instrument; a vertical baffle is integrally connected to the lower end of the central island, a through-beam photoelectric sensor is installed on the lower side of the partition plate, the through-beam photoelectric sensor comprises a transmitter and a receiver which cooperate with each other, when the central island is pressed and retracts downward, the baffle plate follows the central island to descend between the transmitter and the receiver, thereby shielding the light signal emitted by the transmitter; the cabinet can monitor the status of portable instruments stored in the cabinet in real time, and at the same time, it can hold the stored instruments tightly.

Description

Technical Field

[0001] The invention belongs to the field of storage of portable instruments on ships. Background Art

[0002] As ships will sway with the waves, portable precious precision instruments on ocean-going ships, such as hydrophones, Beidou satellite communication terminals, temperature and depth measuring instrument boxes and other instruments, need to be stored in specially designed intelligent spare parts cabinets. In order to avoid the loss and damage of precision instruments, it is necessary to monitor the portable precision instruments stored in the cabinet in real time. At the same time, the cabinet also needs to have the function of protecting the stored portable precision instruments from shaking, collision and tipping over caused by the shaking of the hull. At the same time, it is also necessary to take into account the smoothness of the storage process. In this case, a new intelligent spare parts cabinet was designed according to the above requirements. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an intelligent spare parts cabinet for precision instruments on ships and a monitoring method therein, which can monitor the status of portable instruments stored in the cabinet in real time and at the same time hold the stored instruments tightly.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides an intelligent spare parts cabinet for precision instruments for ships, including a cabinet body, at least one partition layer is arranged in the cabinet body, and at least one instrument placement position is arranged on the partition. A central island which retracts downward after being pressed is arranged in the center of the instrument placement position. When the instrument is placed horizontally on the instrument placement position, the central island retracts downward under the action of the gravity of the instrument; a vertical baffle is integrally connected to the lower end of the central island, and a through-beam photoelectric sensor is installed on the lower side of the partition. The through-beam photoelectric sensor includes a transmitter and a receiver which cooperate with each other. When the central island retracts under pressure, the baffle descends with the central island to between the transmitter and the receiver, thereby blocking the light signal emitted by the transmitter.

[0005] Furthermore, the emitter of the through-beam photoelectric sensor is a light signal that is periodically emitted;

[0006] When the transmitter of the through-beam photoelectric sensor cannot normally receive the light signal from the transmitter, it is judged to be in a normal state;

[0007] When the transmitter of the through-beam photoelectric sensor smoothly receives the light signal from the transmitter, it automatically determines that the instrument device has been lost or overturned.

[0008] Furthermore, a hollow center island groove is arranged in the center of the instrument placement position. When the center island is not under pressure, the center island protrudes above the center island groove. When the center island is under pressure, it completely retracts downward into the center island groove.

[0009] Furthermore, a ring platform is integrally provided along the contour of the bottom end of the center island groove, and the baffle is within the enclosed range of the ring platform. Four hollow guide holes are provided at the four corners of the ring platform, and four guide rods are fixedly provided on the lower side of the central island, and the four guide rods move downward through the four guide holes on the ring platform; each guide rod is provided with a support spring, and each support spring forms an upward elastic support force on the central island.

[0010] Furthermore, four groups of instrument device clamping and restraining units are arranged in a circular array around the central island, and each instrument device clamping and restraining unit is coordinated with the central island;

[0011] When the instrument device is aligned above the instrument device placement position but has not yet pressed down the central island, in a top-down perspective, the four groups of instrument devices hold the constraint units tightly and maintain a certain distance from the four sides of the instrument device respectively;

[0012] When the instrument device is aligned with the instrument device placement position and the central island is pressed down to retract into the central island slot, under the linkage effect, the four groups of instrument device clamping restraint units respectively tightly clamp the four sides of the instrument device.

[0013] Furthermore, the instrument device clamping constraint unit includes a horizontal reel, with rotating shafts coaxially arranged at both ends of the reel, the two rotating shafts are rotatably installed on the bearing seat through bearings, and the lower end of the bearing seat is fixed to the partition; the partition directly below each reel is hollowed out with a cloth belt passing hole, and the lower end of each cloth belt passing hole is rotatably provided with an a roller parallel to the reel directly above, and four b rollers are rotatably installed on the inner side of the ring table through four roller shafts distributed in a circle, and each b roller is parallel to a corresponding a roller.

[0014] On the lower side of the partition, four linkage belts are radially distributed with the central island as the center, and each linkage belt corresponds to a reel. A section of each linkage belt close to the center of the instrument placement position crosses the lower side of the b roller and extends upward, and the end is fixedly connected to the central island; a section of each linkage belt away from the center of the instrument placement position crosses the lower side of the a roller and then passes upward through the belt through hole and is fixedly connected to the corresponding reel; a section of the linkage belt between the central island and the b roller is recorded as belt section a, and a section passing through the belt through hole is recorded as belt section b;

[0015] Torsion springs are arranged outside the rotating shafts at both ends of each reel, and the torsion springs apply torsion to the reel, and the linkage belt is in a taut state under the combined action of the torsion of the torsion spring and the pushing force of the support spring; when the central island has not yet retracted downward into the central island slot, the reel maintains balance under the tangential pulling force of the belt section b and the torsion of the torsion spring;

[0016] When the central island retracts downward to the middle island slot, the linked cloth belt becomes relatively loose, and section a of the cloth belt gradually becomes shorter. At the same time, section b of the cloth belt is gradually wound outside the reel under the torsion drive of the torsion spring, forming a cloth belt roll with an outer diameter gradually increasing. In the process of the outer diameter of the cloth belt roll gradually increasing, the linear velocity direction of the cloth belt roll close to the central island is downward.

[0017] Furthermore, each scroll is higher than the central island in a non-pressed state.

[0018] Furthermore, as the central island gradually retracts downward into the center island groove after being compressed, the outer circumference of the cloth tape rolls with gradually increasing outer diameters wound outside the reels gradually approaches the side of the instrument device, until the outer circumference of each cloth tape roll with gradually increasing outer diameter is closely tangent to the side of the instrument device and tightly presses against the side of the instrument device, and finally the four cloth tape rolls embrace the four sides of the placed instrument device inward.

[0019] Beneficial effects: When the instrument device is not returned to the cabinet within the specified time after use, or the instrument device falls over on the bulkhead due to the shaking of the hull and is out of the instrument device placement position, the baffle rises to be out of the transmitter and the receiver, and the system automatically determines that the instrument device has been lost or overturned. At this time, the display screen on the front side of the cabinet shows that the instrument device in the cabinet has been lost or overturned; the intelligent management system can automatically store and access the corresponding spare parts box in the cabinet, monitor environmental changes in real time, and alarm when there is a special situation;

[0020] During the process of storing the instrument device, the central island gradually retracts downward into the center island groove after being compressed, and each section a of the cloth belt gradually becomes shorter and each linked cloth belt becomes relatively loose. At the same time, each section b of the cloth belt is gradually wound outside the reel under the torsion drive of the torsion spring, forming a cloth belt roll with an outer diameter gradually increasing. In the process of the outer diameter of each cloth belt roll gradually increasing, the linear velocity direction of one side of the cloth belt roll instrument device is downward, and gradually approaches the side of the instrument device due to the gradual increase in the outer diameter, until the outer peripheral surface of each cloth belt roll with a gradually increasing outer diameter is closely tangent to the side of the instrument device and tightly presses the side of the instrument device, so that the four sides of the finally placed instrument device are finally subjected to the pushing pressure of the cloth belt roll outside the reel, and the four cloth belt rolls hold the four sides of the placed instrument device inward, so that the placed instrument device is completely held and positioned in the horizontal direction, and is not easy to shake or flip under the action of waves due to the action of holding on all sides, thereby improving the stability and wave resistance of the stored instrument device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the cabinet;

[0022] Figure 2 It is a schematic diagram of the structure inside the cabinet;

[0023] Figure 3 This is a schematic diagram of the instrument device placed on the partition;

[0024] Figure 4 The schematic diagram is that the instrument device is aligned above the instrument device placement position but has not yet pressed down the central island (the upper part of this figure), and then the instrument device presses down the central island to retract into the central island slot, and the four groups of instrument device clamping constraint units respectively tightly clamp the four sides of the instrument device (the lower part of this figure);

[0025] Figure 5 This is a schematic diagram of the front of the partition;

[0026] Figure 6 It is a cross-sectional view of the partition;

[0027] Figure 7 This is a schematic diagram of the partition from an upward perspective;

[0028] Figure 8 Schematic diagram of the central island from two perspectives. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] As attached Figures 1 to 8 A smart spare parts cabinet for precision instruments of ships is shown, such as Figure 1 and 2 As shown, the cabinet 1 includes a cabinet body 1, wherein at least one partition 4 is arranged inside the cabinet body 1, and the partition 4 has at least one instrument placement position 43 on the partition 4. A central island 10 is arranged at the center of the instrument placement position 43 and retracts downward after being pressed. When an instrument device 3 is horizontally placed on the instrument placement position 43, the instrument device 3 is a portable precious precision instrument, such as a hydrophone, a Beidou satellite communication terminal, a temperature and depth measuring instrument box, etc.; the size of the instrument placement position 43 is designed according to the size adaptability of the instrument; the central island 10 retracts downward under the gravity of the instrument device 3; as shown in FIG. Figure 6 , 7 , 8; a vertical baffle 23 is integrally connected to the lower end of the central island 10, and a through-beam photoelectric sensor is installed on the lower side of the partition 4. The through-beam photoelectric sensor includes a transmitter 7 and a receiver 8 that cooperate with each other. When the central island 10 shrinks under pressure, the baffle 23 descends with the central island 10 to between the transmitter 7 and the receiver 8, thereby blocking the light signal emitted by the transmitter 7.

[0031] Under normal circumstances, the transmitter 7 of the through-beam photoelectric sensor periodically emits a light signal. When the instrument device 3 is normally placed at the instrument device placement position 43 on the partition 4 in the cabinet 1, the central island 10 retracts downward under the action of the gravity of the instrument device 3, and the baffle 23 follows the central island 10 to descend between the transmitter 7 and the receiver 8, thereby blocking the light signal emitted by the transmitter 7; thus, the transmitter 7 of the through-beam photoelectric sensor cannot normally receive the light signal emitted by the transmitter 7. At this time, it is determined to be in a normal state, and the display screen 2 on the front side of the cabinet 1 shows that the instrument is in a normal storage state.

[0032] When the instrument 3 is not returned to the cabinet 1 within the specified time after use, or the instrument 3 is overturned on the partition 4 due to the shaking of the hull and is separated from the instrument placement position 43, the central island 10 automatically rises, and the baffle 23 rises to be separated from the transmitter 7 and the receiver 8. At this time, the transmitter 7 of the through-beam photoelectric sensor can smoothly receive the light signal emitted by the transmitter 7. Based on this, the system automatically determines that the instrument 3 has been lost or overturned. At this time, the display screen 2 on the front side of the cabinet 1 shows that the instrument 3 in the cabinet 1 has been lost or overturned; the intelligent management system can automatically store and access records for the corresponding spare parts box in the cabinet, monitor environmental changes in real time, and alarm when there is a special situation.

[0033] like Figures 5 to 8 As shown, a hollow center island groove 11 is provided in the center of the instrument placement position 43. When the central island 10 is not under pressure, the central island 10 protrudes above the center island groove 11. When the central island 10 is under pressure, it completely retracts downward into the center island groove 11. A ring platform 14 is integrally provided along the contour of the bottom end of the center island groove 11. The baffle 23 is within the enclosed range of the ring platform 14. Four hollow guide holes 12 are provided at the four corners of the ring platform 14. Four guide rods 20 are fixedly provided on the lower side of the central island 10. The four guide rods 20 move downward through the four guide holes 12 on the ring platform 14 respectively. A support spring 21 is sleeved on each guide rod 20, and each support spring 21 forms an upward elastic support force on the central island 10.

[0034] Four sets of instrument device clamping and restraining units 5 are arranged in a circular array around the central island 10, and each instrument device clamping and restraining unit 5 is linked with the central island 10; Figure 4 the upper part; when the instrument device 3 is aligned above the instrument device placement position 43 but has not yet pressed down the central island 10, in a top-down perspective, the four groups of instrument devices hold the constraint units 5 and respectively maintain a certain distance from the four side edges 3a of the instrument device 3; thereby, the instrument device 3 can be smoothly placed at the instrument device placement position 43 without the need for strict alignment.

[0035] When the instrument device 3 is aligned with the instrument device placement position 43, and the central island 10 is pressed down to retract into the central island slot 11, as shown in FIG. Figure 4In the lower part, under the linkage effect, the four groups of instrument device holding constraint units 5 respectively hold the four side edges 3a of the instrument device 3 tightly; thereby, the placed instrument device 3 is completely held and positioned in the horizontal direction, and is not easy to shake or flip under the action of waves due to the holding on all sides, thereby improving the stability and wave resistance of the stored instrument device 3.

[0036] like Figure 5 and 6 As shown, the instrument device holding constraint unit 5 includes a horizontal reel 16, and two ends of the reel 16 are coaxially provided with a rotating shaft 17, and the two rotating shafts 17 are rotatably installed on the bearing seat 19 through bearings, and the lower end of the bearing seat 19 is fixed to the partition 4; the partition 4 directly below each reel 16 is hollowed out with a cloth belt passing hole 15, and the lower end of each cloth belt passing hole 15 is rotatably provided with an a roller 31 parallel to the reel 16 directly above, and the inner side of the ring platform 14 is rotatably installed with four roller shafts 13 distributed in a circle, and each b roller 22 is parallel to a corresponding a roller 31;

[0037] On the lower side of the partition 4, four linkage belts 9 are radially distributed with the central island 10 as the center, and each linkage belt 9 corresponds to a reel 16. A section of each linkage belt 9 close to the center of the instrument device placement position 43 crosses the lower side of the b roller 22 and extends upward, and the end is fixedly connected to the central island 10; a section of each linkage belt 9 away from the center of the instrument device placement position 43 crosses the lower side of the a roller 31 and then passes upward through the belt through hole 15 and is fixedly connected to the corresponding reel 16; the space between the central island 10 and the b roller 22 A section of the linkage tape 9 is recorded as tape a section 9a, and a section passing through the tape through hole 15 is recorded as tape b section 9b; a torsion spring 19 is arranged outside the rotating shaft 17 at both ends of each reel 16, and the torsion spring 19 applies a torsion force to the reel 16, and the linkage tape 9 is in a taut state under the combined action of the torsion force of the torsion spring 19 and the pushing force of the support spring 21; when the central island 10 has not yet retracted downward into the central island groove 11, the reel 16 maintains balance under the tangential pulling force of the tape b section 9b and the torsion of the torsion spring 19.

[0038] When the central island 10 is retracted downward to the middle island groove 11, the linkage cloth belt 9 becomes relatively loose, and the cloth belt section a 9a gradually becomes shorter. At the same time, the cloth belt section b 9b is gradually wound around the reel 16 under the torsion drive of the torsion spring 19, forming a cloth belt roll 9c with an outer diameter gradually increasing. In the process of the outer diameter of the cloth belt roll 9c gradually increasing, the linear velocity direction of the cloth belt roll 9c close to the central island 10 is downward.

[0039] In this case, each reel 16 is higher than the central island 10 in a non-pressed state; the linkage belt 9 is a nylon fiber fabric, and the thickness of the belt body is 3 mm.

[0040] Working principle: When no instrument device 3 is placed on the instrument device placement position 43, the central island 10 is not pressed, and the central island 10 is higher than the middle island slot 11. At this time, the cloth tape roll 9c is not wound around the reel 16 of the constraint unit 5 held by each instrument device;

[0041] When placing the instrument device 3, the staff first holds the instrument device 3 with both hands above the instrument device placement position 43, but does not let go. At this time, the central island 10 has not been subjected to downward pressure. From a bird's-eye view, the reels 16 of the four groups of instrument devices holding the constraint unit 5 are respectively outside the four side edges 3a of the instrument device 3, and maintain a certain gap, so that the instrument device 3 can be smoothly placed at the instrument device placement position 43 without strict alignment; then the staff releases the instrument device 3 above the instrument device placement position 43 with both hands, and the instrument device 3 descends under the action of gravity. The gravity of the instrument device 3 itself is large enough to overcome the pushing force of the support spring 21 and push the central island 10 downward. In the process of the central island 10 gradually shrinking downward into the center island groove 11 after being pressed, each The cloth tape segment a 9a gradually becomes shorter, and each linked cloth tape 9 becomes relatively loose. At the same time, each cloth tape segment b 9b is gradually wound around the reel 16 under the torsion drive of the torsion spring 19, forming a cloth tape roll 9c with a gradually increasing outer diameter wound around each reel 16. In the process of gradually increasing outer diameters of each cloth tape roll 9c, the linear velocity direction of one side of the instrument device 3 of the cloth tape roll 9c is downward, and gradually approaches the side of the instrument device 3 due to the gradually increasing outer diameter, until the outer peripheral surface of each cloth tape roll 9c with a gradually increasing outer diameter is closely tangent to the side of the instrument device 3 and tightly presses the side of the instrument device 3, so that the four sides of the finally placed instrument device 3 are finally subjected to the pushing pressure of the cloth tape roll 9c outside the reel 16, and the four cloth tape rolls 9c hug the four sides of the placed instrument device 3 inwardly, as shown in FIG. Figure 4 The lower part of the instrument device 3 is thus completely held and positioned in the horizontal direction, and is not easily shaken, collided, made noise or flipped over by the action of the waves due to being held tightly on all sides, thereby improving the stability and wave resistance of the stored instrument device 3.

[0042] When taking out the instrument device 3, it is only necessary to lift up the stored instrument device 3 with both hands. During the lifting of the instrument device 3, the four cloth tape rolls 9c adaptively rotate under the action of rolling friction, and the outer diameter automatically becomes smaller, thereby making the lifting process of the instrument device 3 smoother. After the instrument device 3 is taken out, the central island 10 automatically rises from the central island groove 11.

[0043] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An intelligent spare parts cabinet for precision instruments on ships, characterized by: The invention comprises a cabinet (1), wherein at least one partition (4) is arranged inside the cabinet (1), wherein at least one instrument placement position (43) is arranged on the partition (4), wherein a central island (10) is arranged at the center of the instrument placement position (43) and retracts downward when under pressure, and when an instrument (3) is horizontally placed on the instrument placement position (43), the central island (10) retracts downward under the action of the gravity of the instrument (3); a vertical baffle (23) is integrally connected to the lower end of the central island (10), and a beam-type photoelectric sensor is installed on the lower side of the partition (4), wherein the beam-type photoelectric sensor comprises a transmitter (7) and a receiver (8) that cooperate with each other, and when the central island (10) retracts under pressure, the baffle (23) follows the central island (10) and descends to between the transmitter (7) and the receiver (8), thereby shielding the light signal emitted by the transmitter (7).

2. The method for monitoring the internal cabinet of a ship precision instrument intelligent spare parts cabinet according to claim 1 is characterized in that: The emitter (7) of the through-beam photoelectric sensor emits a light signal periodically; When the transmitter (7) of the through-beam photoelectric sensor cannot normally receive the light signal emitted by the transmitter (7), it is determined to be in a normal state; When the transmitter (7) of the through-beam photoelectric sensor smoothly receives the light signal emitted by the transmitter (7), it is automatically determined that the instrument device (3) has been lost or overturned.

3. The intelligent spare parts cabinet for precision marine instruments according to claim 1, characterized in that: A hollowed-out center island groove (11) is arranged at the center of the instrument placement position (43); when the center island (10) is not under pressure, the center island (10) protrudes above the center island groove (11); and when the center island (10) is under pressure, it completely retracts downward into the center island groove (11).

4. The intelligent spare parts cabinet for precision marine instruments according to claim 3 is characterized by: A ring platform (14) is integrally provided along the contour of the bottom end of the central island groove (11); a baffle (23) is within the enclosed range of the ring platform (14); four hollow guide holes (12) are provided at four corners of the ring platform (14); four guide rods (20) are fixedly provided on the lower side of the central island (10); the four guide rods (20) respectively move downward through the four guide holes (12) on the ring platform (14); each of the guide rods (20) is sleeved with a support spring (21); each of the support springs (21) forms an upward elastic support force on the central island (10).

5. The intelligent spare parts cabinet for precision marine instruments according to claim 4, characterized in that: Four groups of instrument device clamping and restraining units (5) are arranged in a circular array around the central island (10), and each of the instrument device clamping and restraining units (5) is linked and coordinated with the central island (10); When the instrument device (3) is aligned above the instrument device placement position (43) but has not yet pressed down the central island (10), in a top-down perspective, the four groups of instrument devices hold the restraining units (5) and respectively maintain a certain distance from the four side edges (3a) of the instrument device (3); When the instrument device (3) is aligned with the instrument device placement position (43) and the central island (10) is pressed down into the retracted central island slot (11), under the linkage effect, the four groups of instrument device clamping constraint units (5) respectively tightly clamp the four side edges (3a) of the instrument device (3).

6. The intelligent spare parts cabinet for precision instruments for ships according to claim 5, characterized in that: The instrument device clamping constraint unit (5) comprises a transverse reel (16), and two ends of the reel (16) are provided with rotating shafts (17) coaxially, and the two rotating shafts (17) are rotatably mounted on a bearing seat (19) through bearings, and the lower end of the bearing seat (19) is fixed to the partition (4); the partition (4) directly below each reel (16) is hollowed out with a cloth belt passing hole (15), and the lower end of each cloth belt passing hole (15) is rotatably provided with an a roller (31) parallel to the reel (16) directly above, and the inner side of the ring platform (14) is rotatably provided with four roller shafts (13) distributed in a circumferential row, and each b roller (22) is parallel to a corresponding a roller (31); On the lower side of the partition (4), four linked cloth belts (9) are radially distributed with the central island (10) as the center, and each linked cloth belt (9) corresponds to a reel (16). A section of each linked cloth belt (9) close to the center of the instrument device placement position (43) crosses the lower side of the b roller (22) and then extends upward, and the end is fixedly connected to the central island (10); a section of each linked cloth belt (9) away from the center of the instrument device placement position (43) crosses the lower side of the a roller (31) and then passes through the cloth belt passing hole (15) upward and then is fixedly connected to the corresponding reel (16); a section of the linked cloth belt (9) between the central island (10) and the b roller (22) is recorded as cloth belt section a (9a), and a section passing through the cloth belt passing hole (15) is recorded as cloth belt section b (9b); Torsion springs (19) are arranged outside the rotating shafts (17) at both ends of each reel (16), and the torsion springs (19) apply torsion to the reel (16). Under the combined action of the torsion of the torsion spring (19) and the pushing force of the support spring (21), the linked cloth belt (9) is in a taut state; when the central island (10) has not yet retracted downward into the central island groove (11), the reel (16) maintains balance under the tangential pulling force of the cloth belt section b (9b) and the torsion of the torsion spring (19); When the central island (10) is retracted downward to the central island groove (11), the linkage cloth belt (9) becomes relatively loose, and the cloth belt section a (9a) gradually becomes shorter. At the same time, the cloth belt section b (9b) is gradually wound outside the reel (16) under the torsion drive of the torsion spring (19), forming a cloth belt roll (9c) wound outside the reel (16) with an outer diameter gradually increasing. In the process of the outer diameter of the cloth belt roll (9c) gradually increasing, the linear speed direction of the cloth belt roll (9c) close to the central island (10) is downward.

7. The intelligent spare parts cabinet for precision instruments for ships according to claim 6, characterized in that: Each reel (16) is higher than the central island (10) in a non-pressed state.

8. The intelligent spare parts cabinet for precision marine instruments according to claim 7, characterized in that: As the central island (10) is compressed and gradually retracts downward into the central island groove (11), the outer circumference of the cloth tape rolls (9c) with gradually increasing outer diameters wound around the reels (16) gradually approaches the side of the instrument device (3) until the outer circumference of each cloth tape roll (9c) with gradually increasing outer diameters is closely tangent to the side of the instrument device (3) and closely presses against the side of the instrument device (3), and finally the four cloth tape rolls (9c) embrace the four side surfaces of the placed instrument device (3) inwardly.

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