Biosafety cabinet with steel wire rope anti-falling device

Abstract

Relates to the field of safety cabinets, and discloses a biological safety cabinet with a steel wire rope anti-falling device, which comprises a safety cabinet, a box door movably arranged on the safety cabinet, a steel wire rope arranged at the upper end of the box door and a balancing weight arranged on the rear side of the safety cabinet and connected with the steel wire rope. The guide wheel device is arranged at the upper part of the safety cabinet, is connected with the steel wire rope and is used for guiding the steel wire rope; the guide wheel box is arranged at the upper end of the safety cabinet and used for protecting the guide wheel device; according to the guide wheel device for the biological safety cabinet, the steel wire rope is effectively prevented from loosening or falling off from the guide wheel device in the using process, and therefore the operation safety of the biological safety cabinet is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety cabinets, in particular to a biological safety cabinet with a steel wire rope anti-falling device. Background Art

[0002] In biological experiments and related research, biological safety cabinets (BSCs) are critical equipment used to provide a sterile or low-microbial environment, protecting operators, experimental materials, and the environment from harmful biological agents. These cabinets are typically equipped with various mechanical and electrical systems to ensure their proper operation and safety. The door is a crucial component of the cabinet, requiring stable and reliable opening and closing to maintain the biosafety environment within.

[0003] Existing equipment has the following shortcomings: The wire rope, as a connecting and transmission element, plays a vital role in the biosafety cabinet's door opening and closing mechanism. However, due to long-term use, mechanical wear, or improper operation, the wire rope may become loose or fall off, posing safety hazards. This not only affects the normal use of the cabinet but also poses a threat to the operator's safety.

[0004] Therefore, the present application proposes a biosafety cabinet with a wire rope anti-falling device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a biological safety cabinet with a wire rope anti-falling device to solve the safety hazards such as the wire rope may become loose or fall off.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a biological safety cabinet with a wire rope anti-falling device, comprising a safety cabinet, a door movably arranged on the safety cabinet, a wire rope arranged at the upper end of the door, and a counterweight block arranged at the rear side of the safety cabinet and connected to the wire rope, and further comprising:

[0007] A guide wheel device is provided on the upper part of the safety cabinet and is connected to the steel wire rope, and is used to guide the steel wire rope;

[0008] A guide wheel box is provided at the upper end of the safety cabinet and is used to protect the guide wheel device;

[0009] An anti-slip unit is arranged inside the guide wheel box and is used to support and protect the steel wire rope.

[0010] The guide wheel device includes a first guide wheel fixed on the top of the safety cabinet close to the door and a second guide wheel fixed on the top of the safety cabinet away from the door, and the wire rope is looped on the first guide wheel and the second guide wheel.

[0011] Wherein, the anti-slip unit includes an anti-slip cover plate detachably fixed on the first guide wheel and the second guide wheel, and the anti-slip cover plate is provided with a guide groove for the movement of the wire rope at the position corresponding to the wire rope, and the guide groove is located at the position where the wire rope is connected to the first guide wheel and the second guide wheel, and the inner wall is connected to the bracket for installing the first guide wheel and the second guide wheel.

[0012] In which, the anti-slip unit includes a first supporting device arranged inside the guide wheel box, a fastening device arranged between the first supporting device and the second guide wheel, and a second supporting device arranged on the safety cabinet and located below the second guide wheel. The first supporting device and the second supporting device have the same structure.

[0013] In which, the first supporting device includes a connecting frame fixed on the inner wall of the guide wheel box, a first supporting roller arranged at the lower part of the connecting frame, a second supporting roller arranged at the lower part of the connecting frame, and a limiting rod arranged on the connecting frame and located between the first supporting roller and the second supporting roller, and the steel wire rope is passed between the limiting rod and the first supporting roller and the second supporting roller.

[0014] In which, the fastening device includes a fastening rod passing through the top of the safety cabinet, an extrusion block fixed at the upper end of the fastening rod, a mounting plate fixed at the upper end of the extrusion block, a fastening roller arranged between the mounting plates and a connecting rod arranged at the upper end of the mounting plate, a limiting plate is fixed at the lower end of the fastening rod, the fastening rod is located between the safety cabinet and the extrusion block and is sleeved with an elastic member, and the steel wire rope is passed between the fastening roller and the connecting rod.

[0015] Among them, a placement frame is provided at the position corresponding to the counterweight block on the safety cabinet, and a limiting groove for the movement of the counterweight block is opened on the placement frame. A handle is provided on the box door, and a fixing buckle for fixing the steel wire rope is provided at the upper end of the box door.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The guide wheel device of the utility model can guide the wire rope, providing a clear transmission path for the wire rope, reducing the direct contact between the wire rope and other components of the safety cabinet, thereby reducing the friction coefficient, which can not only extend the service life of the wire rope, but also reduce the noise and heat generated by friction. The anti-slip unit can make the tension of the wire rope be adjusted in time during the movement of the wire rope, always keeping it in a taut state, effectively preventing the wire rope from loosening or falling off from the guide wheel device during use, thereby significantly improving the safety of biological safety cabinet operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 3 This is a schematic cross-sectional view of an embodiment of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the connection between the anti-dropping device and the safety cabinet in one embodiment of the present invention;

[0022] Figure 5 This is a structural diagram of the connection between the anti-slip device, the box door and the counterweight block in one embodiment of the present invention;

[0023] Figure 6 This is a schematic structural diagram of an anti-slip unit in one embodiment of the present invention;

[0024] Figure 7 This is a structural diagram of the connection between the counterweight block and the placement frame in one embodiment of the present utility model;

[0025] Figure 8 This is a schematic structural diagram of the connection between the anti-drop cover plate and the first guide wheel and the second guide wheel in one embodiment of the present invention;

[0026] Figure 9 This is a schematic structural diagram of an explosion-proof cover plate in one embodiment of the present invention;

[0027] Figure 10 This is a schematic structural diagram of the connection between the guide groove and the wire rope in one embodiment of the present invention.

[0028] In the figure: 1. Safety cabinet; 11. Placement frame; 111. Limiting groove; 12. First guide wheel; 13. Second guide wheel; 2. Box door; 21. Handle; 22. Fixing buckle; 3. Guide wheel box; 4. Wire rope; 5. Anti-slip unit; 51. First supporting device; 511. Connecting frame; 512. First supporting roller; 513. Second supporting roller; 514. Limiting rod; 52. Second supporting device; 53. Fastening device; 531. Mounting plate; 532. Fastening roller; 533. Connecting rod; 534. Extrusion block; 535. Fastening rod; 536. Limiting plate; 537. Elastic member; 54. Anti-slip cover; 5401. Guide groove; 6. Counterweight. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-10 The utility model provides a technical solution: a biological safety cabinet with a wire rope anti-falling device, comprising a safety cabinet 1, a door 2 movably arranged on the safety cabinet 1, a wire rope 4 arranged at the upper end of the door 2, and a counterweight 6 arranged at the rear side of the safety cabinet 1 and connected to the wire rope 4, and further comprising:

[0032] A guide wheel device is provided on the upper part of the safety cabinet 1 and is connected to the wire rope 4, and is used to guide the wire rope 4;

[0033] The guide wheel box 3 is provided at the upper end of the safety cabinet 1 and is used to protect the guide wheel device;

[0034] The anti-slip unit 5 is arranged inside the guide wheel box 3 and is used to support and protect the wire rope 4.

[0035] It should be noted that during operation, when opening the door 2 on the safety cabinet 1, push the door 2 upward, then move up on the side of the wire rope 4 connected to the door 2, and then the other end of the wire rope 4 moves down driven by the counterweight 6, and during the movement of the wire rope 4, the guide wheel device can guide the wire rope 4, providing a clear transmission path for the wire rope 4, reducing the direct contact between the wire rope 4 and other components of the safety cabinet 1, thereby reducing the friction coefficient, which not only extends the service life of the wire rope 4, but also reduces the noise and heat generated by friction. The anti-slip unit 5 can limit and guide the moving position of the wire rope 4 during the movement of the wire rope 4, and can adjust the tension of the wire rope 4 in time, so that the wire rope 4 always remains taut, effectively preventing the wire rope 4 from loosening or falling off the guide wheel device during use, thereby significantly improving the safety of the operation of the biological safety cabinet 1.

[0036] In one embodiment, the guide wheel device includes a first guide wheel 12 fixed on the top of the safety cabinet 1 close to the door 2 and a second guide wheel 13 fixed on the top of the safety cabinet 1 away from the door 2, and the wire rope 4 is sleeved on the first guide wheel 12 and the second guide wheel 13.

[0037] This design, see Figure 4 ,as well as Figure 5The setting of the first guide wheel 12 and the second guide wheel 13 provides a clear transmission path for the wire rope 4, ensuring the stability and accuracy of the wire rope 4 during the transmission process, avoiding the risk of wear and falling off due to uncertain direction or offset, and reducing the direct contact between the wire rope 4 and other components of the safety cabinet 1, thereby reducing the friction coefficient, which not only extends the service life of the wire rope 4, but also reduces the noise and heat generated by friction, thereby improving the operating efficiency of the entire system.

[0038] In one embodiment, the anti-slip unit 5 includes an anti-slip cover plate 54 that is detachably fixed to the first guide wheel 12 and the second guide wheel 13. A guide groove 5401 for the movement of the wire rope 4 is opened at the position of the anti-slip cover plate 54 corresponding to the wire rope 4. The guide groove 5401 is located at the position where the wire rope 4 is connected to the first guide wheel 12 and the second guide wheel 13, and the inner wall is connected to the bracket for installing the first guide wheel 12 and the second guide wheel 13.

[0039] In this design, the anti-detachment cover plate 54 is fixed on the first guide wheel 12 and the second guide wheel 13, and then the guide groove 5401 on the anti-detachment cover plate 54 is aligned with the wire rope 4, so that the wire rope 4 can move in the guide groove 5401, and then the anti-detachment cover plate 54 is tightly fitted with the side walls of the first guide wheel 12 and the second guide wheel 13, which can limit the moving position of the wire rope 4 and prevent the wire rope 4 from falling off the first guide wheel 12 and the second guide wheel 13 during use.

[0040] Example 2

[0041] In one embodiment, see Figure 8-10 The anti-slip unit 5 includes a first supporting device 51 arranged inside the guide wheel box 3, a fastening device 53 arranged between the first supporting device 51 and the second guide wheel 13, and a second supporting device 52 arranged on the safety cabinet 1 and located below the second guide wheel 13. The structures of the first supporting device 51 and the second supporting device 52 are the same.

[0042] This design, see Figure 3-6 By setting the first supporting device 51 and the second supporting device 52, the wire rope 4 is doubly supported during the transmission process, which enhances the stability and load-bearing capacity of the wire rope 4 and effectively prevents the risk of falling off due to failure of single-point support. Since the first supporting device 51 and the second supporting device 52 have the same structure, they can evenly distribute the pressure on the wire rope 4, which helps to reduce local wear of the wire rope 4 and extend its service life. The setting of the fastening device 53 can flexibly adjust the tension of the wire rope 4, which not only ensures the tightness of the wire rope 4 during the transmission process, but also helps to reduce the safety hazards caused by insufficient or excessive tension.

[0043] In one embodiment, the first support device 51 includes a connecting frame 511 fixed on the inner wall of the guide wheel box 3, a first support roller 512 arranged at the lower part of the connecting frame 511, a second support roller 513 arranged at the lower part of the connecting frame 511, and a limiting rod 514 arranged on the connecting frame 511 and located between the first support roller 512 and the second support roller 513, and the wire rope 4 is passed between the limiting rod 514 and the first support roller 512 and the second support roller 513.

[0044] This design, see Figure 4-6 Through the coordinated use of the first support roller 512 and the second support roller 513, the wire rope 4 is stably supported during the transmission process. The setting of the limit rod 514 effectively limits the deviation of the wire rope 4 during the transmission process. This design effectively prevents the shaking and falling of the wire rope and improves the reliability of the transmission.

[0045] In one embodiment, the fastening device 53 includes a fastening rod 535 passing through the top of the safety cabinet 1, an extrusion block 534 fixed to the upper end of the fastening rod 535, a mounting plate 531 fixed to the upper end of the extrusion block 534, a fastening roller 532 arranged between the mounting plates 531, and a connecting rod 533 arranged on the upper part of the mounting plate 531. A limiting plate 536 is fixed to the lower end of the fastening rod 535. The fastening rod 535 is located between the safety cabinet 1 and the extrusion block 534 and is sleeved with an elastic member 537. The wire rope 4 is passed between the fastening roller 532 and the connecting rod 533. The elastic member 537 is made of a damped spring or elastic pad.

[0046] This design, see Figure 5 ,as well as Figure 6 The connecting rod 533 can limit the wire rope 4 to prevent it from falling off the tightening roller 532. The wire rope 4 is sleeved on the tightening roller 532, and the tightening roller 532 is squeezed downward, so that the squeezing block 534 squeezes the elastic member 537. When the wire rope 4 becomes loose, the elastic member 537 can drive the tightening roller 532 to move upward, which can provide an upward tightening force to the wire rope 4, tightening the wire rope 4 to ensure that the wire rope 4 will not loosen or fall off during the transmission process.

[0047] In one embodiment, a placement frame 11 is provided at the position of the corresponding counterweight block 6 on the safety cabinet 1, and a limiting groove 111 is provided on the placement frame 11 for the movement of the counterweight block 6. A handle 21 is provided on the box door 2, and a fixing buckle 22 for fixing the wire rope 4 is provided at the upper end of the box door 2.

[0048] This design, see Figure 5 ,as well as Figure 7The setting of the handle 21 makes it more convenient to open and close the box door 2. The operator can easily open or close the box door 2, which improves work efficiency. The fixing buckle 22 can effectively fix the wire rope 4 to prevent it from loosening or falling off during use, thereby enhancing the safety and reliability of the device. The placement frame 11 provides a stable placement space for the counterweight block 6, ensuring that the counterweight block 6 will not move or fall off at will during use.

[0049] In addition, if there are descriptions of "first," "second," etc. in the embodiments, such descriptions are for descriptive purposes only and should not be understood as indicating or implying the relative importance of the description or implicitly indicating the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

Claims

1. A biological safety cabinet with a wire rope anti-falling device, comprising a safety cabinet (1), a door (2) movably arranged on the safety cabinet (1), a wire rope (4) arranged at the upper end of the door (2), and a counterweight (6) arranged at the rear side of the safety cabinet (1) and connected to the wire rope (4), characterized in that: Also includes: A guide wheel device, arranged on the upper part of the safety cabinet (1) and connected to the steel wire rope (4), for guiding the steel wire rope (4); A guide wheel box (3) is provided at the upper end of the safety cabinet (1) and is used to protect the guide wheel device; An anti-slip unit (5) is arranged inside the guide wheel box (3) and is used to support and protect the steel wire rope (4).

2. A biological safety cabinet with a wire rope anti-falling device according to claim 1, characterized in that: The guide wheel device comprises a first guide wheel (12) fixed to a side of the top of the safety cabinet (1) close to the door (2) and a second guide wheel (13) fixed to a side of the top of the safety cabinet (1) away from the door (2), and the steel wire rope (4) is sleeved on the first guide wheel (12) and the second guide wheel (13).

3. The biological safety cabinet with a wire rope anti-falling device according to claim 2, characterized in that: The anti-slip unit (5) includes an anti-slip cover plate (54) detachably fixed on the first guide wheel (12) and the second guide wheel (13); the anti-slip cover plate (54) is provided with a guide groove (5401) for the movement of the steel wire rope (4) at a position corresponding to the steel wire rope (4); the guide groove (5401) is located at a position where the steel wire rope (4) is connected to the first guide wheel (12) and the second guide wheel (13); and the inner wall of the guide groove is connected to the bracket for installing the first guide wheel (12) and the second guide wheel (13).

4. The biological safety cabinet with a wire rope anti-falling device according to claim 2, characterized in that: The anti-slip unit (5) comprises a first supporting device (51) arranged inside the guide wheel box (3), a fastening device (53) arranged between the first supporting device (51) and the second guide wheel (13), and a second supporting device (52) arranged on the safety cabinet (1) and located below the second guide wheel (13). The first supporting device (51) and the second supporting device (52) have the same structure.

5. The biological safety cabinet with a wire rope anti-falling device according to claim 4, characterized in that: The first supporting device (51) includes a connecting frame (511) fixed on the inner wall of the guide wheel box (3), a first supporting roller (512) arranged at the lower part of the connecting frame (511), a second supporting roller (513) arranged at the lower part of the connecting frame (511), and a limiting rod (514) arranged on the connecting frame (511) and located between the first supporting roller (512) and the second supporting roller (513), and the steel wire rope (4) is passed through the limiting rod (514) and the first supporting roller (512) and the second supporting roller (513).

6. The biosafety cabinet with a wire rope anti-falling device according to claim 4, characterized in that: The fastening device (53) comprises a fastening rod (535) passing through the top of the safety cabinet (1), an extrusion block (534) fixed to the upper end of the fastening rod (535), a mounting plate (531) fixed to the upper end of the extrusion block (534), a fastening roller (532) arranged between the mounting plates (531), and a connecting rod (533) arranged on the upper part of the mounting plate (531); a limiting plate (536) is fixed to the lower end of the fastening rod (535); an elastic member (537) is sleeved on the fastening rod (535) located between the safety cabinet (1) and the extrusion block (534); and the steel wire rope (4) passes between the fastening roller (532) and the connecting rod (533).

7. The biological safety cabinet with a wire rope anti-falling device according to claim 1, characterized in that: A placement frame (11) is provided on the safety cabinet (1) at a position corresponding to the counterweight (6), and a limiting groove (111) is provided on the placement frame (11) for the counterweight (6) to move. A handle (21) is provided on the door (2), and a fixing buckle (22) for fixing the steel wire rope (4) is provided on the upper end of the door (2).

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