A kind of air duct assembly lifting device for fresh air system

Abstract

The present invention discloses a duct assembly lifting device for a fresh air system, and relates to the technical field of lifting devices, including: a frame, a traction device is installed on the top of the frame; a lifting limit device is provided inside the frame for sliding, the traction device is used to pull and lift the lifting limit device, the front of the frame is slidably connected with the duct limit device, the lifting limit device is connected to the duct limit device, and the lifting limit device drives the lifting movement of the duct limit device. The present invention utilizes a setting mode in which a lifting mechanism and a two-way clamping mechanism are matched, and the lifting mechanism controls the horizontal position movement of the two-way clamping mechanism, so that both directions of the lifting mechanism can be limited during the lifting and moving process. When the load direction changes due to a motor failure, the position of the lifting mechanism is limited in time to prevent the motor from falling when it needs to be lifted, or rising when it needs to be moved down, so that the assembly of the duct is safer.

Description

Technical Field

[0001] The invention relates to the technical field of lifting devices, and in particular to an air duct assembly lifting device for a fresh air system. Background Art

[0002] During the assembly of the air duct, in order not to affect the movement of personnel, the air duct generally needs to be assembled to the ceiling position, and the assembly position is relatively high. This means that the assembly of the air duct generally requires the air duct to be fixed first, and then the air duct is raised and lowered by a hoist so as to lift the air duct to a suitable height.

[0003] Hoists with rope traction mainly rely on the motor to drive the rope wheel, and the rope is connected to the lifting platform or load through a pulley system. The rotation of the motor drives the rope to move, thereby lifting or lowering the load. The motor provides the power source and pulls the rope by driving the rope wheel. Rope: Usually a steel wire rope with high strength and wear resistance is used to carry and transfer the load. Rope wheel: The rope is wrapped on it and driven by the motor. Braking system: Used to stop and maintain the position of the platform in an emergency to ensure safety.

[0004] During long-term use of the motor, there may be a potential danger of motor reversal: accidental motor reversal can cause the load to move unexpectedly. Load direction change: motor reversal can cause the load direction of the hoist to change, which may cause the load to drop instead of rise, or vice versa. Since the load may move uncontrollably, motor reversal can cause serious safety hazards to operators and the surrounding environment. Especially when lifting heavy objects or people, a reversing motor can cause serious accidents. In existing hoists, it is not possible to limit the air duct in both directions during lifting, so when the motor load direction changes, it will interfere with the normal operation of the hoist and may even cause an accident. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an air duct assembly and lifting device for a fresh air system.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A duct assembly and lifting device for a fresh air system, comprising:

[0007] A frame, a traction device is installed on the top of the frame;

[0008] The internal sliding of the frame is provided with a lifting limit device, the traction device is used to pull and lift the lifting limit device, the front sliding of the frame is connected with an air duct limit device, the lifting limit device is connected to the air duct limit device, and the lifting movement of the air duct limit device is driven by the lifting limit device.

[0009] Preferably, the traction device comprises:

[0010] A motor, wherein the motor is mounted on the top of the frame;

[0011] Winding roller, the output end of the motor is drivingly connected to the main shaft, the main shaft is rotatably connected with the top of the frame, and the winding roller is fixedly installed on the main shaft;

[0012] A traction rope, one end of which is wound around a winding roller, and the other end of which is connected to a lifting and limiting device.

[0013] Preferably, the lifting and limiting device comprises:

[0014] A lifting mechanism, wherein the lifting mechanism is slidably arranged inside the frame;

[0015] A two-way clamping mechanism, the two-way clamping mechanism is connected to the bottom of the lifting mechanism, and the two-way clamping mechanism can be adjusted in horizontal position relative to the lifting mechanism;

[0016] A plurality of card blocks are respectively connected to two sides of the inner wall of the frame, and the two-way card connection mechanism is slidably connected with the card blocks.

[0017] Preferably, the lifting mechanism comprises:

[0018] A lifting seat, wherein the lifting seat is arranged horizontally;

[0019] A slide plate, wherein a slide groove is provided inside the lifting seat, and the slide plate is slidably arranged inside the slide groove;

[0020] An elastic reset component, which is symmetrically mounted inside the slide groove, is slidably connected with the slide plate, and is used for elastically supporting the slide plate;

[0021] An electromagnetic adsorption component, wherein the electromagnetic adsorption component is installed between the slide plate and the inner wall of the slide groove;

[0022] Rollers, a plurality of the rollers are respectively connected to the two sides of the lifting seat, and the rollers cooperate with the guide rails arranged inside the frame.

[0023] Preferably, the elastic reset assembly comprises:

[0024] A guide rod, the guide rod is fixedly installed inside the slide slot, and the guide rod is slidably interlaced with the slide plate;

[0025] A first spring, wherein the first spring is movably sleeved on the outside of the guide rod;

[0026] The electromagnetic adsorption component comprises:

[0027] An iron block, the iron block is fixedly installed in the middle of the slide plate;

[0028] The electromagnet corresponds to the position of the iron block and is fixedly installed inside the slide slot.

[0029] Preferably, the bidirectional clamping mechanism comprises:

[0030] A mounting seat connected to the bottom of the slide;

[0031] Elastic support components, the elastic support components are slidably installed on both sides of the mounting seat;

[0032] A two-way limiting assembly is connected to the end of the elastic supporting assembly.

[0033] Preferably, the elastic support assembly comprises:

[0034] A slide cylinder, a cavity is provided on the side of the mounting seat, and the slide cylinder is slidably interlaced with the cavity;

[0035] A fixed cylinder, one end of which is fixedly connected to the inner wall of the cavity, and the sliding cylinder is slidably sleeved with the fixed cylinder;

[0036] A first insertion rod, one end of which is connected to the bidirectional limit assembly, the first insertion rod is arranged inside the sliding cylinder, and the first insertion rod is slidably sleeved with the fixed cylinder;

[0037] A second spring, wherein the second spring is slidably sleeved outside the first penetration rod;

[0038] The bidirectional limit assembly comprises:

[0039] A first connecting plate connected to an end of the slide cylinder;

[0040] A first one-way building block and a second one-way building block, wherein the first one-way building block and the second one-way building block are both connected to the side surface of the first connecting plate, and the first one-way building block and the second one-way building block are in opposite directions.

[0041] Preferably, the air duct limiting device comprises:

[0042] A mounting plate, wherein the mounting plate is arranged vertically;

[0043] A slider, wherein the slider is mounted on a mounting plate;

[0044] A slide rail, wherein the slide rail is mounted on the front side of the frame, and the slider is slidably matched with the slide rail;

[0045] A first clamping plate, the first clamping plate is mounted on an end of the mounting plate, and the first clamping plate is symmetrically arranged;

[0046] A two-way clamping mechanism is installed at the end of the first clamping plate and is used to press and fix the pipeline.

[0047] Preferably, the bidirectional clamping mechanism comprises:

[0048] A second clamping plate, the second clamping plate is arranged at the end of the first clamping plate and is in the same vertical plane as the first clamping plate, one side of the second clamping plate is provided with a V-shaped groove, and the other side of the second clamping plate is provided with a trapezoidal groove;

[0049] A sliding frame, the interior of the second clamping plate is rotatably connected to a rotating shaft via a bearing, the middle portion of the sliding frame is connected to one end of the rotating shaft, and the second clamping plate is rotatably connected between the sliding frames;

[0050] A second insertion rod, one end of which is threadedly inserted and connected to the first clamping plate, and the second insertion rod is slidably inserted and connected to the sliding frame;

[0051] Positioning components, the top and bottom of both sides of the second clamping plate are both installed with positioning components, and the positioning components are used to limit the relative position between the second clamping plate and the sliding frame;

[0052] The positioning component comprises:

[0053] A fixing seat, the fixing seat is fixedly mounted on the second clamping plate;

[0054] A second connecting plate, wherein two second connecting plates are slidably disposed on the inner side and the outer side of the fixing seat respectively;

[0055] A third interpenetrating rod, the third interpenetrating rod being connected between the second connecting plates, and the third interpenetrating rod being slidably interpenetratingly connected with the fixing seat;

[0056] A third spring, the third spring being movably sleeved on the outside of the third insertion rod;

[0057] A positioning block is installed on one of the second connecting plates, and the positioning block is slidably and interlacedly connected with the fixing seat.

[0058] The present invention discloses an air duct assembly and lifting device for a fresh air system, which has the following beneficial effects:

[0059] 1. The present invention utilizes a setting mode in which a lifting mechanism and a two-way clamping mechanism are coordinated. The lifting mechanism controls the horizontal position movement of the two-way clamping mechanism, thereby facilitating the adjustment of the coordination position between the two-way clamping mechanism and the clamping block, and realizing the limitation of both directions of the lifting mechanism during the lifting and moving process. When the load direction changes due to a motor failure, the position of the lifting mechanism is limited in time to prevent the motor from falling when it needs to be lifted, or rising when it needs to be moved down, making the assembly of the air duct safer.

[0060] 2. The present invention utilizes a setting method in which a motor and a winding roller are matched. Through the operation of the motor, it is easy to drive the rotation of the main shaft, so that the main shaft drives the winding roller to rotate. When the winding roller reels the traction rope, the length of the traction rope gradually becomes shorter, so that the lifting and lowering limit device can be pulled to achieve the lifting of the lifting and lowering limit device. When the traction rope is unwound by the winding roller, the length of the traction rope gradually becomes longer. Through the self-gravity of the lifting and lowering limit device and the air duct limit device, the air duct limit device can be moved downward, thereby achieving the upward or downward movement of the air duct.

[0061] 3. The present invention utilizes a setting method in which the first insertion rod and the second spring are matched with each other. By interlacing the sliding cylinder and the first insertion rod with the fixed cylinder, it is convenient to ensure the stability of the linear sliding of the two-way limit assembly relative to the mounting seat. Through the compression deformation of the second spring, it is convenient to elastically support the relative position between the two-way limit assembly and the mounting seat, so that when the lifting mechanism is in a normal lifting state, the two-way limit assembly can perform telescopic movement and will not be stably stuck between the blocks, and will not affect the normal lifting state of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0063] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0064] Figure 2 It is a schematic diagram of the internal structure of the front side of an embodiment of the present invention.

[0065] Figure 3 It is a schematic diagram of the internal structure of the side of an embodiment of the present invention.

[0066] Figure 4 It is a schematic diagram of the side structure of the lifting and limiting device in an embodiment of the present invention.

[0067] Figure 5 It is a schematic diagram of the internal front structure of the lifting mechanism in an embodiment of the present invention.

[0068] Figure 6 It is a schematic diagram of the internal structure of the electromagnetic adsorption component on the side in an embodiment of the present invention.

[0069] Figure 7 It is a schematic diagram of the internal structure of the elastic reset component on the side in an embodiment of the present invention.

[0070] Figure 8 Schematic diagram of the internal structure of the front part of the two-way clamping mechanism in an embodiment of the present invention.

[0071] Fig. 9 It is a schematic diagram of the three-dimensional structure of the bidirectional limit assembly in an embodiment of the present invention.

[0072] Fig.10 It is a schematic diagram of the three-dimensional structure of the air duct limiting device in an embodiment of the present invention.

[0073] Fig.11 It is a schematic diagram of the side structure of the air duct limiting device in an embodiment of the present invention.

[0074] Fig.12 It is a schematic diagram of the internal structure of the side of the positioning component in an embodiment of the present invention.

[0075] In the figure: 1, frame; 2, traction device; 21, motor; 22, winding roller; 23, traction rope; 3, lifting limit device; 31, lifting mechanism; 311, lifting seat; 312, slide plate; 313, elastic reset assembly; 3131, guide rod; 3132, first spring; 314, electromagnetic adsorption assembly; 3141, iron block; 3142, electromagnet; 315, roller; 32, two-way clamping mechanism; 321, mounting seat; 322, elastic support assembly; 3221, slide cylinder; 3222, fixed cylinder; 3223, first insertion rod; 3224, second spring; 32 3. Bidirectional limit assembly; 3231. First connecting plate; 3232. First unidirectional building block; 3233. Second unidirectional building block; 33. Block; 4. Duct limit device; 41. Mounting plate; 42. Sliding block; 43. Slide rail; 44. First clamping plate; 45. Bidirectional clamping mechanism; 451. Second clamping plate; 4511. V-shaped groove; 4512. Trapezoidal groove; 452. Sliding frame; 453. Second penetration rod; 454. Positioning assembly; 4541. Fixed seat; 4542. Second connecting plate; 4543. Third penetration rod; 4544. Third spring; 4545. Positioning block. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0077] Example: Figure 1-12The duct assembly lifting device of a fresh air system shown in the figure includes: a frame 1, a traction device 2 is installed on the top of the frame 1; a lifting limit device 3 is slidably arranged inside the frame 1, the traction device 2 is used to pull and lift the lifting limit device 3, and the front of the frame 1 is slidably connected with a duct limit device 4, the lifting limit device 3 is connected to the duct limit device 4, and the lifting movement of the duct limit device 4 is driven by the lifting limit device 3.

[0078] Furthermore, the traction device 2 includes: a motor 21, which is installed on the top of the frame 1; a winding roller 22, wherein the output end of the motor 21 is transmission-connected with a main shaft, the main shaft is rotationally interlaced with the top of the frame 1, and the winding roller 22 is fixedly installed on the main shaft; a traction rope 23, wherein one end of the traction rope 23 is wound around the winding roller 22, and the other end of the traction rope 23 is connected to the lifting and limiting device 3. Through the operation of the motor 21, it is easy to drive the rotation of the main shaft, so that the main shaft drives the winding roller 22 to rotate. When the winding roller 22 winds up the traction rope 23, the length of the traction rope 23 gradually shortens, so that the lifting and limiting device 3 can be pulled to achieve the lifting of the lifting and limiting device 3. When the traction rope 23 is unwound by the winding roller 22, the length of the traction rope 23 gradually lengthens, and the lifting and limiting device 3 and the air duct limiting device 4 can be moved downward by their own gravity, thereby achieving the upward or downward movement of the air duct.

[0079] Furthermore, the lifting and limiting device 3 includes: a lifting mechanism 31, which is slidably arranged inside the frame 1; a two-way clamping mechanism 32, which is connected to the bottom of the lifting mechanism 31, and the two-way clamping mechanism 32 can adjust the horizontal position relative to the lifting mechanism 31; a clamping block 33, wherein multiple clamping blocks 33 are respectively connected to both sides of the inner wall of the frame 1, and the two-way clamping mechanism 32 is slidably clamped with the clamping block 33, and the horizontal position movement of the two-way clamping mechanism 32 is controlled by the lifting mechanism 31, so as to facilitate the adjustment of the matching position between the two-way clamping mechanism 32 and the clamping block 33, so as to achieve the limitation of both directions in the lifting and moving process of the lifting mechanism 31, and when the load direction of the motor 21 changes due to a fault, the position of the lifting mechanism 31 is limited in time to prevent the motor 21 from falling when it needs to be lifted, or rising when it needs to be moved down, so that the assembly of the air duct is safer.

[0080] Furthermore, the lifting mechanism 31 includes: a lifting seat 311, which is horizontally arranged; a slide plate 312, a slide groove is provided inside the lifting seat 311, and the slide plate 312 is slidably arranged inside the slide groove; an elastic reset component 313, which is symmetrically installed inside the slide groove, and the elastic reset component 313 is slidably connected with the slide plate 312, and the elastic reset component 313 is used for elastically supporting the slide plate 312; an electromagnetic adsorption component 314, which is installed between the slide plate 312 and the inner wall of the slide groove; a roller 315, and a plurality of rollers 315 are respectively connected to the lifting seat 311 On both sides, the rollers 315 cooperate with the guide rails provided inside the frame 1, and the lifting seat 311 is connected to the air duct limiting device 4, so that the movement of the air duct limiting device 4 can be synchronously driven by the movement of the lifting seat 311. By opening the slide groove, it is convenient to provide sliding space for the horizontal forward and backward sliding of the slide plate 312, so that the slide plate 312 can synchronously drive the two-way clamping mechanism 32 to adjust the horizontal position. Through the cooperation of the roller 315 and the guide rail, the wire rail can limit the rolling of the roller 315, so that the lifting and lowering movement of the lifting seat 311 is smoother and more stable.

[0081] Furthermore, the elastic reset assembly 313 includes: a guide rod 3131, which is fixedly installed inside the slide groove, and the guide rod 3131 is slidably interlaced with the slide plate 312; a first spring 3132, which is movably sleeved on the outside of the guide rod 3131, and the sliding interlacing between the guide rod 3131 and the slide plate 312 facilitates the movement of the slide plate 312 to limit the linear motion of the mounting seat 321, and the compression deformation of the first spring 3132 facilitates the elastic support of the slide plate 312, so as to ensure that the first unidirectional block 3232 corresponds to the position of the block 33 when in the rising state; the electromagnetic adsorption assembly 314 includes : Iron block 3141, iron block 3141 is fixedly installed in the middle of slide plate 312; electromagnet 3142, the position of electromagnet 3142 corresponds to that of iron block 3141, and electromagnet 3142 is fixedly installed inside the slide slot, electromagnet 3142 is composed of an iron core and a coil, and the coil is electrically connected to an external power supply through an external switch, when the coil is energized, the electromagnet 3142 can generate magnetism, thereby attracting the iron block 3141, so that the slide plate 312 drives the mounting seat 321 to move to a horizontal position, further compressing and deforming the first spring 3132, so as to ensure that the second unidirectional block 3233 corresponds to the position of the card block 33 when in the descending state.

[0082] Furthermore, the two-way clamping mechanism 32 includes: a mounting seat 321, which is connected to the bottom of the slide plate 312; an elastic support component 322, which is slidably and interlacedly installed on both sides of the mounting seat 321; a two-way limiting component 323, which is connected to the end of the elastic support component 322. The elastic support component 322 facilitates elastic support of the two-way limiting component 323, so that the two-way limiting component 323 can be retracted and slid when it does not need to be limited in one direction.

[0083] Furthermore, the elastic support assembly 322 includes: a slide cylinder 3221, a cavity is opened on the side of the mounting seat 321, and the slide cylinder 3221 is slidably inserted and connected with the cavity; a fixed cylinder 3222, one end of the fixed cylinder 3222 is fixedly connected to the inner wall of the cavity, and the slide cylinder 3221 and the fixed cylinder 3222 are slidably sleeved; a first insertion rod 3223, one end of the first insertion rod 3223 is connected to the two-way limit assembly 323, the first insertion rod 3223 is arranged inside the slide cylinder 3221, and the first insertion rod 3223 is slidably sleeved with the fixed cylinder 3222; a second spring 3224, the second spring 3224 The sliding sleeve is arranged on the outside of the first insertion rod 3223, and the sliding cylinder 3221 and the first insertion rod 3223 are inserted between the fixed cylinder 3222, so as to ensure the stability of the linear sliding of the two-way limit assembly 323 relative to the mounting seat 321. The compression deformation of the second spring 3224 facilitates the elastic support of the relative position between the two-way limit assembly 323 and the mounting seat 321, so that when the lifting mechanism 31 is in a normal lifting state, the two-way limit assembly 323 can perform telescopic movement, and will not be stably stuck between the clamping blocks 33, and will not affect the normal lifting state of the lifting mechanism 31;

[0084] The two-way limit assembly 323 includes: a first connecting plate 3231, the first connecting plate 3231 is connected to the end of the slide cylinder 3221; a first one-way block 3232 and a second one-way block 3233, the first one-way block 3232 and the second one-way block 3233 are both connected to the side of the first connecting plate 3231, the first one-way block 3232 and the second one-way block 3233 are in opposite directions, when the first one-way block 3232 is adjusted to between the card block 33, because the upper surface of the first one-way block 3232 is an arc surface and the lower surface is a plane, so that when the lifting mechanism 31 moves upward, the card block 33 is squeezed and contacted with the upper surface of the first one-way block 3232, at this time, the elastic support assembly 322 performs elastic contraction movement, which does not affect the normal rising movement of the lifting mechanism 31, because at this time the first The plane of the lower surface of the one-way block 3232 corresponds to the plane of the clamping block 33, thereby realizing a one-way clamping connection between the two-way limit stop assembly 323 and the clamping block 33, so that in this state, the lifting mechanism 31 can only move upward. When there is a tendency to move downward, the first one-way block 3232 will be stuck between the clamping blocks 33, thereby realizing a one-way limit between the two-way clamping mechanism 32 and the clamping block 33. Conversely, when the second one-way block 3233 is adjusted to between the clamping blocks 33, since the lower surface of the first one-way block 3232 is an arc surface and the upper surface is a plane, in this state, the lifting mechanism 31 can only move downward. When there is a tendency to move upward, the second one-way block 3233 will be stuck between the clamping blocks 33, thereby realizing a one-way limit between the two-way clamping mechanism 32 and the clamping block 33.

[0085] Furthermore, the air duct limiting device 4 includes: a mounting plate 41, which is vertically arranged; a slider 42, which is installed on the mounting plate 41; a slide rail 43, which is installed on the front side of the frame 1, and the slider 42 and the slide rail 43 are slidably matched; a first clamping plate 44, which is installed on the end of the mounting plate 41, and the first clamping plate 44 is symmetrically arranged; a two-way clamping mechanism 45, which is installed on the end of the first clamping plate 44, and the two-way clamping mechanism 45 is used to press and fix the pipeline, and it is convenient to drive the lifting movement of the mounting plate 41 through the lifting and lowering limiting device 3, and through the sliding cooperation between the slider 42 and the slide rail 43, it is convenient to limit the lifting and lowering movement of the mounting plate 41, so that the movement of the mounting plate 41 is more stable, and the relative squeezing of the air duct by the first clamping plate 44 and the two-way clamping mechanism 45 is convenient to clamp and fix the circular or square air duct.

[0086] Furthermore, the bidirectional clamping mechanism 45 includes: a second clamping plate 451, the second clamping plate 451 is arranged at the end of the first clamping plate 44, and is in the same vertical plane as the first clamping plate 44; a V-shaped groove 4511 is provided on one side of the second clamping plate 451, and through the V-shaped setting of the inner cavity of the V-shaped groove 4511, when the circular air duct is clamped, two points of the outer wall of the air duct are in contact with the inner wall of the V-shaped groove 4511, and the other point is in contact with the first clamping plate 44, so as to facilitate the three-point clamping of the circular air duct, which is more stable; a trapezoidal groove 4512 is provided on the other side of the second clamping plate 451, and through the stepped setting of the inner cavity of the trapezoidal groove 4512, it is convenient to limit square tubes of different sizes and specifications, and then clamp them on the first clamping plate 44, so as to clamp square tubes of different specifications, and through the rotation of the second clamping plate 451, it is convenient to rotate the V-shaped groove 451 1 and the use of the trapezoidal groove 4512 are selected; the sliding frame 452, the interior of the second clamping plate 451 is rotatably connected with a rotating shaft through a bearing, the middle part of the sliding frame 452 is connected to one end of the rotating shaft, and the second clamping plate 451 is rotatably connected between the sliding frames 452; the second insertion rod 453, one end of the second insertion rod 453 is threadedly inserted and connected with the first clamping plate 44, and the second insertion rod 453 is slidably inserted and connected with the sliding frame 452, and the second insertion rod 453 is threadedly rotated relative to the first clamping plate 44, so that the second clamping plate 451 can move relative to the first clamping plate 44, so as to clamp and fix the air duct; the positioning assembly 454, the top and bottom of both sides of the second clamping plate 451 are installed with positioning assemblies 454, and the positioning assembly 454 is used to limit the relative position between the second clamping plate 451 and the sliding frame 452 to prevent the second clamping plate 451 from rotating at will;

[0087] The positioning assembly 454 includes: a fixing seat 4541, the fixing seat 4541 is fixedly mounted on the second clamping plate 451; a second connecting plate 4542, two second connecting plates 4542 are respectively slidably arranged on the inner side and the outer side of the fixing seat 4541; a third insertion rod 4543, the third insertion rod 4543 is connected between the second connecting plates 4542, and the third insertion rod 4543 is slidably inserted and connected with the fixing seat 4541; a third spring 4544, the third spring 4544 is movably sleeved on the outside of the third insertion rod 4543; a positioning block 4545, a positioning block The positioning block 4545 is installed on one of the second connecting plates 4542. The positioning block 4545 is slidably and interlacedly connected with the fixing seat 4541, and is connected between the second connecting plates 4542 through the third insertion rod 4543, so as to facilitate the control of the movement of the positioning block 4545. Through the compression deformation of the third spring 4544, the elastic support of the second connecting plate 4542 is facilitated, so that the positioning block 4545 protrudes out of the fixing seat 4541 without being subjected to external force, thereby limiting the relative position between the second clamping plate 451 and the sliding frame 452.

[0088] The method of using the duct assembly lifting device of this embodiment is as follows:

[0089] First, the use orientation of the second clamping plate 451 is selected according to the shape of the air duct. When the circular air duct needs to be assembled and lifted, the inner wall of the V-shaped groove 4511 cooperates with the first clamping plate 44, and then the second insertion rod 453 is screwed and tightened, so that the second clamping plate 451 can squeeze and fix the circular air duct. When the square air duct needs to be assembled and lifted, one second connecting plate 4542 is pulled, and under the connection of the third insertion rod 4543, the other second connecting plate 4542 pulls the positioning block 4545 to retract, so that the positioning block 4545 retracts to the fixing seat 454. 1, at this time, the positioning block 4545 no longer protrudes and is limited between the second clamping plate 451 and the sliding frame 452, so that the second clamping plate 451 can be rotated, and the trapezoidal groove 4512 can be rotated to a position opposite to the first clamping plate 44, and the second connecting plate 4542 is loosened, so that the positioning block 4545 extends out, and the position of the second clamping plate 451 is limited, so that the second clamping plate 451 and the first clamping plate 44 are in the same vertical plane, and then the second insertion rod 453 is screwed and tightened, so that the inner wall of the trapezoidal groove 4512 squeezes and limits the square air duct, so that the second clamping plate 451 can squeeze and fix the square air duct;

[0090] When the air duct needs to be lifted upward, the first one-way block 3232 corresponds to the position of the clamping block 33, and the motor 21 is operated to drive the winding roller 22 to rotate and reel, and the winding roller 22 reels the traction rope 23, so that the traction rope 23 can pull the lifting limit device 3 to move upward, so that the lifting limit device 3 drives the air duct clamped by the air duct limit device 4 to move upward. At this time, the plane at the bottom of the first one-way block 3232 is in contact with the clamping block 33, and the air duct is lifted up by the mounting seat. When the mounting seat 321 moves upward, the first one-way block 3232 has an arc surface in contact with the clamping block 33, so that when the mounting seat 321 moves upward, the clamping block 33 squeezes the first one-way block 3232, so that the elastic support assembly 322 shrinks toward the mounting seat 321, without affecting the upward movement of the mounting seat 321. At the same time, the plane at the bottom of the first one-way block 3232 fits in contact with the clamping block 33, and the clamping block 33 supports the two-way clamping mechanism 32 to prevent the air duct from falling when it is lifted.

[0091] When the air duct needs to be adjusted downward, the electromagnet 3142 is energized and operates. Through the principle of electromagnetism, the electromagnet 3142 after being energized generates magnetism to attract the iron block 3141, which makes the slide plate 312 slide in the direction of the electromagnet 3142, squeezing and deforming the first spring 3132, while driving the mounting seat 321 to slide horizontally synchronously. At this time, the second one-way block 3233 corresponds to the position of the clamping block 33. Similarly, since the top of the second one-way block 3233 is flat The surface of the first one-way block 3233 is in close contact with the block 33. When the mounting seat 321 moves downward, the contact surface of the second one-way block 3233 with the block 33 is an arc surface. As a result, when the mounting seat 321 moves upward, the block 33 squeezes the second one-way block 3233, causing the elastic support assembly 322 to shrink toward the mounting seat 321. While not affecting the downward movement of the mounting seat 321, the upward movement of the air duct limiting device 4 can be limited by the plane at the bottom of the first one-way block 3232 being in close contact with the block 33.

[0092] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A duct assembly and lifting device for a fresh air system, characterized in that: include: A frame (1), wherein a traction device (2) is installed on the top of the frame (1); a lifting limit device (3) is slidably arranged inside the frame (1), the traction device (2) is used to pull and lift the lifting limit device (3); a duct limit device (4) is slidably connected to the front of the frame (1), the lifting limit device (3) is connected to the duct limit device (4), and the lifting limit device (3) drives the lifting movement of the duct limit device (4); The lifting and limiting device (3) comprises: A lifting mechanism (31), wherein the lifting mechanism (31) is slidably arranged inside the frame (1); A two-way clamping mechanism (32), the two-way clamping mechanism (32) being connected to the bottom of the lifting mechanism (31), and the two-way clamping mechanism (32) being capable of adjusting a horizontal position relative to the lifting mechanism (31); A clamping block (33), wherein a plurality of the clamping blocks (33) are respectively connected to two sides of the inner wall of the frame (1), and the bidirectional clamping mechanism (32) is slidably clamped with the clamping block (33); The bidirectional clamping mechanism (32) comprises: A mounting seat (321), wherein the mounting seat (321) is connected to the bottom of the slide plate (312); An elastic support assembly (322), wherein the elastic support assembly (322) is slidably installed on both sides of the mounting seat (321); the elastic support assembly (322) comprises: A slide cylinder (3221), wherein a cavity is provided on the side of the mounting seat (321), and the slide cylinder (3221) is slidably interlaced with the cavity; A fixed cylinder (3222), one end of which is fixedly connected to the inner wall of the cavity, and the sliding cylinder (3221) is slidably sleeved with the fixed cylinder (3222); a first insertion rod (3223), one end of which is connected to the bidirectional limit assembly (323), the first insertion rod (3223) being disposed inside the sliding cylinder (3221), and the first insertion rod (3223) being slidably sleeved with the fixed cylinder (3222); a second spring (3224), the second spring (3224) being slidably sleeved on the outside of the first penetration rod (3223); a two-way limit assembly (323), the two-way limit assembly (323) being connected to the end of the elastic support assembly (322); the two-way limit assembly (323) comprising: A first connecting plate (3231), the first connecting plate (3231) being connected to an end of the slide cylinder (3221); A first one-way building block (3232) and a second one-way building block (3233), wherein the first one-way building block (3232) and the second one-way building block (3233) are both connected to the side surface of the first connecting plate (3231), and the first one-way building block (3232) and the second one-way building block (3233) are oriented in opposite directions.

2. The air duct assembly and lifting device for the fresh air system according to claim 1, characterized in that: The traction device (2) comprises: A motor (21), wherein the motor (21) is mounted on the top of the frame (1); A winding roller (22), wherein the output end of the motor (21) is drivingly connected to a main shaft, the main shaft is rotatably connected to the top of the frame (1), and the winding roller (22) is fixedly mounted on the main shaft; A traction rope (23), one end of the traction rope (23) is wound around the winding roller (22), and the other end of the traction rope (23) is connected to the lifting and limiting device (3).

3. The air duct assembly and lifting device for the fresh air system according to claim 1, characterized in that: The lifting mechanism (31) comprises: A lifting seat (311), wherein the lifting seat (311) is arranged horizontally; A slide plate (312), wherein a slide groove is provided inside the lifting seat (311), and the slide plate (312) is slidably disposed inside the slide groove; An elastic reset component (313), the elastic reset component (313) being symmetrically mounted inside the slide groove, the elastic reset component (313) being slidably interlaced with the slide plate (312), and the elastic reset component (313) being used to elastically support the slide plate (312); An electromagnetic adsorption component (314), wherein the electromagnetic adsorption component (314) is installed between the slide plate (312) and the inner wall of the slide groove; Rollers (315), wherein a plurality of the rollers (315) are respectively connected to two sides of the lifting seat (311), and the rollers (315) cooperate with guide rails provided inside the frame (1).

4. The air duct assembly and lifting device for the fresh air system according to claim 3, characterized in that: The elastic reset component (313) comprises: A guide rod (3131), wherein the guide rod (3131) is fixedly mounted inside the slide groove, and the guide rod (3131) is slidably interlaced with the slide plate (312); A first spring (3132), the first spring (3132) being movably sleeved on the outside of the guide rod (3131); The electromagnetic adsorption component (314) comprises: An iron block (3141), wherein the iron block (3141) is fixedly mounted on the middle portion of the slide plate (312); The electromagnet (3142) corresponds to the position of the iron block (3141), and the electromagnet (3142) is fixedly installed inside the slide groove.

5. The air duct assembly and lifting device for the fresh air system according to claim 1, characterized in that: The air duct limiting device (4) comprises: A mounting plate (41), wherein the mounting plate (41) is arranged vertically; A slider (42), wherein the slider (42) is mounted on the mounting plate (41); A slide rail (43), wherein the slide rail (43) is mounted on the front side of the frame (1), and the slider (42) is slidably engaged with the slide rail (43); A first clamping plate (44), the first clamping plate (44) being mounted on an end of the mounting plate (41), and the first clamping plate (44) being symmetrically arranged; A bidirectional clamping mechanism (45) is installed at the end of the first clamping plate (44), and is used to press and fix the pipeline.

6. The air duct assembly and lifting device for the fresh air system according to claim 5, characterized in that: The bidirectional clamping mechanism (45) comprises: a second clamping plate (451), the second clamping plate (451) being arranged at an end of the first clamping plate (44) and being located on the same vertical plane as the first clamping plate (44), a V-shaped groove (4511) being provided on one side of the second clamping plate (451), and a trapezoidal groove (4512) being provided on the other side of the second clamping plate (451); A sliding frame (452), the interior of the second clamping plate (451) is rotatably connected to a rotating shaft via a bearing, the middle of the sliding frame (452) is connected to one end of the rotating shaft, and the second clamping plate (451) is rotatably connected to the sliding frame (452); A second insertion rod (453), one end of the second insertion rod (453) being threadedly inserted and connected to the first clamping plate (44), and the second insertion rod (453) being slidably inserted and connected to the sliding frame (452); Positioning components (454), the top and bottom of both sides of the second clamping plate (451) are both equipped with positioning components (454), and the positioning components (454) are used to limit the relative position between the second clamping plate (451) and the sliding frame (452); The positioning component (454) includes: A fixing seat (4541), wherein the fixing seat (4541) is fixedly mounted on the second clamping plate (451); A second connecting plate (4542), wherein two second connecting plates (4542) are respectively slidably disposed on the inner side and the outer side of the fixing seat (4541); A third insertion rod (4543), the third insertion rod (4543) being connected between the second connection plates (4542), the third insertion rod (4543) being slidably inserted and connected with the fixing seat (4541); A third spring (4544), the third spring (4544) being movably sleeved on the outside of the third insertion rod (4543); A positioning block (4545), wherein the positioning block (4545) is mounted on one of the second connecting plates (4542), and the positioning block (4545) is slidably and interlacedly connected with the fixing seat (4541).

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