CN213223688U - A ventilation cabinet that is used for counter weight device, steady lift protection window that protection window goes up and down - Google Patents
A ventilation cabinet that is used for counter weight device, steady lift protection window that protection window goes up and down Download PDFInfo
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- CN213223688U CN213223688U CN202021230277.0U CN202021230277U CN213223688U CN 213223688 U CN213223688 U CN 213223688U CN 202021230277 U CN202021230277 U CN 202021230277U CN 213223688 U CN213223688 U CN 213223688U
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- fixed pulley
- counterweight
- protection window
- lifting
- window
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- 238000009423 ventilation Methods 0.000 title claims abstract description 13
- 239000003517 fume Substances 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 17
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a counter weight device and a ventilation cabinet of steady lift protection window for protection window goes up and down. This a counter weight device for protection window goes up and down is applied to the steady lift protection window of fume chamber, it includes at least one counter weight subassembly, the counter weight subassembly includes the tractive spare, the counterweight, first fixed pulley, the second fixed pulley, the third fixed pulley, the one end of tractive spare is used for connecting the protection window, the other end of tractive spare is walked around first fixed pulley in proper order, be connected with the counterweight behind the second fixed pulley, first fixed pulley, the second fixed pulley is located the same one side of tractive spare, the third fixed pulley is located the opposite side of tractive spare, first fixed pulley is located the top of protection window, the third fixed pulley is located between first fixed pulley and the second fixed pulley, the perisporium of third fixed pulley supports and presses on the tractive spare. This ventilation cabinet of steady lift protection window includes the cabinet body and slides the protection window that sets up on the cabinet body, and it still includes foretell counter weight device that is used for protection window to go up and down.
Description
Technical Field
The utility model relates to a fume chamber field for the laboratory especially relates to a fume chamber that is used for counter weight device and a steady lift protection window that protection window goes up and down.
Background
The fume hood, also called as fume hood or toxin expelling cabinet, is a local air exhaust device most commonly used in laboratories;
the fume hood is used in a laboratory, various chemicals are often tested in the fume hood, and in the test process, gas is generated, so that the fume hood needs to be sealed, namely a window is arranged on the fume hood, and the fume hood is sealed through the window to prevent the generated gas from being discharged to the outside;
among the prior art, carry out opening or closing of window through manual mode, the in-process that this kind of mode was opened or was closed of the door body not only influences work efficiency, moreover because the gravity of window self, if do not restrict the window well, then can lead to the door body whereabouts to cause the damage to operating personnel.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a fume chamber for counter weight device and the steady lift protection window that is used for protection window to go up and down, the fume chamber that has this counter weight device can have solved among the prior art can not be fine carry out opening or closing operation of window, easily cause the problem of the damage of the person or equipment damage.
A counterweight device for preventing the lifting of a protective window is applied to stably lifting the protective window of a ventilation cabinet and comprises at least one counterweight component, the counterweight component comprises a traction part, a counterweight part, a first fixed pulley, a second fixed pulley and a third fixed pulley, one end of the traction piece is connected with the protective window, the other end of the traction piece is connected with the counterweight piece after sequentially passing around the first fixed pulley and the second fixed pulley, the first fixed pulley and the second fixed pulley are positioned on the same side of the drawing piece, the third fixed pulley is positioned on the other side of the drawing piece, the first fixed pulley is positioned above the protective window, the third fixed pulley is positioned between the first fixed pulley and the second fixed pulley, and the peripheral wall of the third fixed pulley is pressed on the traction piece.
Compared with the prior art, a counter weight device for protection window goes up and down adopt first fixed pulley, second fixed pulley to change the application of force direction that draws the piece and adapt to the relative distance of counter weight and protection window to link together counter weight and protection window, through the power of drawing of counter weight, realize that protection window can not close after opening, improved the security after protection window opens. Then, a counter weight device for protection window goes up and down adopt the third fixed pulley to support and press the tractive spare in the top of tractive spare, increase the area of contact of tractive spare and first fixed pulley or second fixed pulley helps increasing the frictional force of tractive spare and first fixed pulley or second fixed pulley, avoids the tractive spare landing from first fixed pulley or second fixed pulley.
Further, the axis of the first fixed pulley and the axis of the second fixed pulley are located on the same horizontal plane. Adopt above-mentioned technical scheme, can further increase the area of contact of tractive spare and first fixed pulley or second fixed pulley for tractive spare twines the quarter of fixed pulley, helps increasing the frictional force of tractive spare and first fixed pulley or second fixed pulley, avoids tractive spare landing from first fixed pulley or second fixed pulley.
Further, an axis of the third fixed pulley is located below the horizontal plane. Adopt above-mentioned technical scheme, can further increase the area of contact of tractive spare and first fixed pulley or second fixed pulley for more parts of tractive spare winding fixed pulley help increasing the frictional force of tractive spare and first fixed pulley or second fixed pulley, avoid tractive spare to follow first fixed pulley or second fixed pulley landing.
Further, a vertical distance from an axis of the third fixed pulley to the horizontal plane is greater than a radius of the third fixed pulley. Adopt above-mentioned technical scheme, can further increase the area of contact of tractive spare and first fixed pulley or second fixed pulley for tractive spare twines half of fixed pulley, helps increasing the frictional force of tractive spare and first fixed pulley or second fixed pulley, avoids tractive spare landing from first fixed pulley or second fixed pulley.
Further, the axis of the first fixed pulley and the axis of the second fixed pulley are parallel to each other. By adopting the technical scheme, the lifting stability of the protection window and the counterweight piece is improved.
Further, the axis of the first fixed pulley and the axis of the third fixed pulley are parallel to each other. By adopting the technical scheme, the lifting stability of the protection window and the counterweight piece is improved.
Further, the first fixed pulley, the second fixed pulley and the third fixed pulley are synchronous wheels, and the traction piece is a synchronous belt. By adopting the technical scheme, the structure is simple, and the manufacturing cost is lower.
Further, the counterweight assembly further comprises a connecting piece and a sleeve, one end of the connecting piece is hinged to the counterweight piece, a tooth portion meshed with the traction piece is arranged at the other end of the connecting piece, and the sleeve is sleeved outside the tooth portion to clamp the traction piece between the tooth portion and the sleeve. By adopting the technical scheme, the counterweight assembly is convenient to install or disassemble, the counterweight assembly is convenient to assemble, and the height of the counterweight can be conveniently adjusted.
Further, the counterweight assembly further comprises a connecting plate used for being installed on the fume hood, and the first fixed pulley, the second fixed pulley and the third fixed pulley are connected to the connecting plate in a rotating mode. Adopt above-mentioned technical scheme, can assemble first fixed pulley, second fixed pulley, third fixed pulley on the connecting plate earlier, install the pulley block after will assembling on the fume chamber in unison again, the staff's of being convenient for equipment on the one hand, on the other hand improves the position precision between first fixed pulley, second fixed pulley, the third fixed pulley, helps improving the stability of the lift of protection window and counterweight.
Further, the weight member is made of lead. By adopting the technical scheme, the counterweight of the counterweight component adopts the lead block, the volume of the counterweight can be reduced, the counterweight can be arranged in the ventilation cabinet, the distance between the counterweight and the protection window is shortened, and the lifting stability of the protection window and the counterweight is further improved.
Furthermore, the counterweight device for lifting the protective window comprises two counterweight components, wherein the traction piece of one counterweight component is used for being connected to the left side of the protective window, and the traction piece of the other counterweight component is used for being connected to the right side of the protective window. Adopt above-mentioned technical scheme, all be connected with a counter weight component in the both sides of protection window, help improving the stability that protection window goes up and down.
Further, the counterweight device for preventing the protective window from ascending and descending further comprises a synchronizing rod, one end of the synchronizing rod is coaxially connected to the second fixed pulley of one counterweight component, and the other end of the synchronizing rod is coaxially connected to the second fixed pulley of the other counterweight component. By adopting the technical scheme, the second fixed pulleys on the two sides of the protection window can move synchronously, so that the lifting smoothness of the protection window is improved, and the phenomenon that the protection window is blocked in the lifting process is prevented.
The utility model provides a fume chamber of steady lift protection window, the fume chamber includes the cabinet body and slides and set up protection window on the cabinet body, the fume chamber still includes foretell counter weight device that is used for protection window to go up and down.
Compared with the prior art, the ventilation cabinet of steady lift protection window adopt above-mentioned counter weight device that is used for the protection window to go up and down after, can realize that the protection window can not close after opening, improved the security after the protection window opens to can solve among the prior art can not be fine carry out opening or closing operation of window, easily cause the problem of the damage of the person or equipment damage.
Further, the counterweight device for preventing the protective window from ascending and descending is arranged in the cabinet body. By adopting the technical scheme, the volume of the ventilation cabinet can be reduced, the lifting stability of the protection window and the counterweight is improved, and the counterweight device for lifting the protection window is convenient to maintain.
Furthermore, the inner wall cover of the cabinet body is provided with a cover body, and the cover body and the inner wall of the cabinet body form a channel for lifting the counterweight. By adopting the technical scheme, on one hand, the movable space of the counterweight can be limited, the counterweight is prevented from shaking, and the stability and smoothness of the lifting of the protection window and the counterweight are improved; on the other hand, the counterweight can be covered, and the attractiveness of the ventilation cabinet is improved.
Furthermore, a limiting part is arranged on the cover body and is positioned in the channel. By adopting the technical scheme, the limiting part is arranged in the lifting path of the counterweight, when the counterweight falls, the counterweight can directly fall on the limiting part, the counterweight is prevented from sliding out of the channel, and the safety is improved.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a counterweight device for preventing a protective window from ascending and descending according to an embodiment;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is an enlarged schematic view at B of FIG. 1;
FIG. 4 is an exploded view of the tension member, the connecting member, and the weight member according to the embodiment;
FIG. 5 is a schematic structural view of a ventilation cabinet with a stably liftable protection window according to an embodiment;
reference numerals:
100. a cabinet body; 110. a cover body; 200. a protective window; 300. a counterweight assembly; 310. a connecting plate; 320. a pulling member; 330. A counterweight; 340. a first fixed pulley; 350. a second fixed pulley; 360. a third fixed pulley; 370. a connecting member; 371. a tooth portion; 380. a sleeve; 400. a synchronization lever; a. a channel.
Detailed Description
A counterweight device for lifting and lowering a protection window, referring to fig. 1 to 4, is mainly applied to a protection window 200 of a fume hood, and includes at least one counterweight assembly 300. The weight assembly 300 includes a connecting plate 310, a pulling member 320, a weight member 330, a first fixed pulley 340, a second fixed pulley 350, and a third fixed pulley 360. The connection plate 310 is mounted on the register by bolts. One end of the pulling member 320 is detachably connected to the protection window 200, and the other end of the pulling member 320 sequentially passes around the first fixed pulley 340 and the second fixed pulley 350 and is detachably connected to the weight member 330. The first fixed pulley 340, the second fixed pulley 350 and the third fixed pulley 360 are rotatably arranged on the connecting plate 310 through bearings, the first fixed pulley 340 and the second fixed pulley 350 are positioned on the same side of the pulling member 320, and the third fixed pulley 360 is positioned on the other side of the pulling member 320. The first fixed pulley 340 is positioned above the protection window 200. The third fixed pulley 360 is located between the first fixed pulley 340 and the second fixed pulley 350, and the peripheral wall of the third fixed pulley 360 is pressed against the pulling member 320.
Referring to fig. 1 to 4, the axis of the first fixed pulley 340 and the axis of the second fixed pulley 350 are parallel to each other. The axis of the first fixed pulley 340 and the axis of the third fixed pulley 360 are parallel to each other. The axis of the first fixed pulley 340 and the axis of the second fixed pulley 350 are located on the same horizontal plane, the axis of the third fixed pulley 360 is located below the horizontal plane, and the vertical distance from the axis of the third fixed pulley 360 to the horizontal plane is greater than the radius of the third fixed pulley 360. In this embodiment, the first fixed pulley 340, the second fixed pulley 350, and the third fixed pulley 360 are all synchronous pulleys, and the pulling member 320 is a synchronous belt.
Referring to fig. 1-4, to facilitate disassembly and assembly of the pull member 320 and the weight member 330, the weight assembly 300 further includes a connector 370, a sleeve 380. One end of the link 370 is hinged to the weight member 330 by a latch, and the other end of the link 370 is provided with a tooth portion 371 engaged with the pulling member 320. The sleeve 380 fits over the tooth 371 to clamp the puller 320 between the tooth 371 and the sleeve 380. During the assembly of the pulling element 320 and the connecting member 370, one end of the pulling element 320 is first inserted through the sleeve 380, then the tooth shape of the portion of the pulling element 320 inserted through the sleeve 380 is engaged with the tooth 371 of the connecting member 370, and then the sleeve 380 is pulled down along the pulling element 320 to the connecting member 370, so that the sleeve 380 is sleeved on the periphery of the tooth 371 of the connecting member 370, thereby clamping the pulling element 320 between the tooth 371 and the sleeve 380, and completing the assembly of the pulling element 320 and the connecting member 370.
The connection manner of the pulling member 320 and the protection window 200 is not limited, and may be a bolt connection, a screw connection, a pin connection, a riveting connection, or the like, or a connection manner of the pulling member 320 and the weight member 330, in this embodiment, the connection manner of the pulling member 320 and the protection window 200 is a connection manner of the pulling member 320 and the weight member 330, that is, one end of the connecting member 370 is hinged to the protection window 200, and the other end of the connecting member 370 is engaged with the pulling member 320, and the pulling member 320 is clamped between the connecting member 370 and the sleeve 380.
Referring to fig. 1 to 4, in order to dispose the weight 330 in the fume hood, the weight 330 is made of lead. At the same weight, lead has a greater density than iron, and lead nuggets can be made smaller than iron nuggets.
Referring to fig. 1 to 4, in addition, in the present embodiment, the counterweight device for lifting and lowering a protection window employs two sets of counterweight assemblies 300, the two sets of counterweight assemblies 300 are respectively installed on two sides of a fume hood, the two sets of counterweight assemblies 300 are respectively located on two sides of the protection window 200, a pull piece 320 of the counterweight assembly 300 on the left side is connected to the left side of the protection window 200, and a pull piece 320 of the counterweight assembly 300 on the right side is connected to the right side of the protection window 200. In order to improve the smoothness of the protection window 200 during the lifting process, the counterweight device for lifting and lowering the protection window further comprises a synchronization rod 400, one end of the synchronization rod 400 is coaxially connected to the second fixed pulley 350 of the left counterweight assembly 300, the other end of the synchronization rod 400 is coaxially connected to the second fixed pulley 350 of the right counterweight assembly 300, and the second fixed pulleys 350 on both sides are synchronously rotated through the synchronization rod 400.
A ventilation cabinet capable of stably lifting a protection window is disclosed, and referring to fig. 1 to 5, the ventilation cabinet comprises a cabinet body 100, the protection window 200 and the counterweight device for lifting the protection window. Wherein, the protection window 200 is vertically slidably disposed in the cabinet 100, and a weight device for the lifting of the protection window is installed in the cabinet 100. Specifically, two sets of counterweight assemblies 300 are both installed in the cabinet 100, and two sets of counterweight assemblies 300 are respectively installed on both sides of the cabinet 100, that is, the connecting plate 310 is installed at the top of the cabinet 100 through a bolt, the first fixed pulley 340 and the second fixed pulley 350 are both located above the protection window 200, and the first fixed pulley 340 is closer to the protection window 200. In order to improve the stability and smoothness of the protection window 200 during the lifting process, a cover 110 is disposed in the cabinet 100, the cover 110 covers the side wall of the cabinet 100, the cover 110 and the side wall of the cabinet 100 form a channel a for the counterweight 330 to lift, and the counterweight 330 moves up and down in the channel a. In order to prevent the counterweight 330 from slipping out of the channel a to cause a safety accident, a limiting member (not shown) is disposed on the cover 110, and the limiting member is located in the channel a, that is, the limiting member is located in the movable range of the counterweight 330, in this embodiment, the limiting member is disposed at the bottom of the cover 110, and the cover 110, the limiting member, and the side wall of the cabinet 100 together form a channel a with an upward opening.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. The utility model provides a counter weight device for protection window goes up and down, its is applied to the steady lift protection window of fume chamber, its characterized in that:
the counterweight device for preventing the lifting of the protective window comprises at least one counterweight component (300), wherein the counterweight component (300) comprises a traction piece (320), a counterweight piece (330), a first fixed pulley (340), a second fixed pulley (350) and a third fixed pulley (360), one end of the traction piece (320) is used for connecting the protective window (200), the other end of the traction piece (320) sequentially bypasses the first fixed pulley (340) and the second fixed pulley (350) and then is connected with the counterweight piece (330), the first fixed pulley (340) and the second fixed pulley (350) are positioned on the same side of the traction piece (320), the third fixed pulley (360) is positioned on the other side of the traction piece (320), the first fixed pulley (340) is positioned above the protective window (200), and the third fixed pulley (360) is positioned between the first fixed pulley (340) and the second fixed pulley (350), the peripheral wall of the third fixed pulley (360) is pressed against the drawing piece (320).
2. The counterweight device for protecting the lifting and lowering of a window according to claim 1, wherein: the axis of the first fixed pulley (340) and the axis of the second fixed pulley (350) are positioned on the same horizontal plane.
3. The counterweight device for protecting the lifting and lowering of a window according to claim 2, wherein: the axis of the third fixed pulley (360) is located below the horizontal plane.
4. The counterweight device for protecting the lifting and lowering of a window according to claim 3, wherein:
the vertical distance from the axis of the third fixed pulley (360) to the horizontal plane is larger than the radius of the third fixed pulley (360);
the axis of the first fixed pulley (340) and the axis of the second fixed pulley (350) are parallel to each other;
the axis of the first fixed pulley (340) and the axis of the third fixed pulley (360) are parallel to each other.
5. The counterweight device for protecting the lifting and lowering of a window according to claim 1, wherein:
the first fixed pulley (340), the second fixed pulley (350) and the third fixed pulley (360) are all synchronous pulleys, and the traction piece (320) is a synchronous belt;
the counterweight assembly (300) further comprises a connecting piece (370) and a sleeve (380), one end of the connecting piece (370) is hinged to the counterweight piece (330), a tooth portion (371) meshed with the traction piece (320) is arranged at the other end of the connecting piece (370), and the sleeve (380) is sleeved outside the tooth portion (371) to clamp the traction piece (320) between the tooth portion (371) and the sleeve (380).
6. The counterweight device for protecting the lifting and lowering of a window according to claim 1, wherein: the counterweight assembly (300) further comprises a connecting plate (310) used for being installed on the fume hood, and the first fixed pulley (340), the second fixed pulley (350) and the third fixed pulley (360) are connected to the connecting plate (310) in a rotating mode.
7. The counterweight device for protecting the lifting and lowering of a window according to claim 1, wherein: the weight member (330) is made of lead.
8. The counterweight device for protecting the lifting and lowering of a window according to claim 1, wherein: the counterweight device for lifting the protection window comprises two counterweight assemblies (300), wherein a drawing piece (320) of one counterweight assembly (300) is used for being connected to the left side of the protection window (200), and a drawing piece (320) of the other counterweight assembly (300) is used for being connected to the right side of the protection window (200);
the counterweight device for preventing the protective window from ascending and descending further comprises a synchronous rod (400), one end of the synchronous rod (400) is coaxially connected to the second fixed pulley (350) of one counterweight component (300), and the other end of the synchronous rod (400) is coaxially connected to the second fixed pulley (350) of the other counterweight component (300).
9. The utility model provides a fume chamber of steady lift protection window, the fume chamber includes that the cabinet body (100) and slip set up protection window (200) on the cabinet body (100), its characterized in that: the fume hood further comprising a counterweight arrangement for protecting the lifting and lowering of a window according to any of claims 1 to 8.
10. The ventilation cabinet of the stable lifting protective window according to claim 9, characterized in that:
the counterweight device for preventing the lifting of the protective window is arranged in the cabinet body (100);
a cover body (110) is arranged on the inner wall of the cabinet body (100) in a covering mode, and a channel (a) for lifting the counterweight (330) is formed by the cover body (110) and the inner wall of the cabinet body (100);
the cover body (110) is provided with a limiting piece, and the limiting piece is positioned in the channel (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230277.0U CN213223688U (en) | 2020-06-29 | 2020-06-29 | A ventilation cabinet that is used for counter weight device, steady lift protection window that protection window goes up and down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021230277.0U CN213223688U (en) | 2020-06-29 | 2020-06-29 | A ventilation cabinet that is used for counter weight device, steady lift protection window that protection window goes up and down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213223688U true CN213223688U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021230277.0U Active CN213223688U (en) | 2020-06-29 | 2020-06-29 | A ventilation cabinet that is used for counter weight device, steady lift protection window that protection window goes up and down |
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| CN (1) | CN213223688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007779A1 (en) * | 2022-07-05 | 2024-01-11 | 济南达宝文汽车设备工程有限公司 | Protection device and method of automatic station guardrail fork port in production workshop |
-
2020
- 2020-06-29 CN CN202021230277.0U patent/CN213223688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024007779A1 (en) * | 2022-07-05 | 2024-01-11 | 济南达宝文汽车设备工程有限公司 | Protection device and method of automatic station guardrail fork port in production workshop |
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Address after: Building 3-1, No. 9-Xinhuan Middle Road, Dalong Street, Panyu District, Guangzhou City, Guangdong Province, 511450 Patentee after: GUANGZHOU HUALITE INTELLIGENT FURNITURE TECHNOLOGY Co.,Ltd. Address before: 510000 105, No.1, Jiye Middle Road, longbian village, Shiji Town, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU HUALITE INTELLIGENT FURNITURE TECHNOLOGY Co.,Ltd. |