Auxiliary device for installation of air pipe machine of refrigeration air conditioner

Abstract

The invention relates to the technical field of air conditioner installation auxiliary equipment, and provides a refrigeration air conditioner air duct machine installation auxiliary device in order to solve the problems that in the installation process of an air conditioner air duct machine, the air conditioner air duct machine is easily affected by external force to shake, and the height of the air conditioner air duct machine cannot be accurately adjusted. The top end of the base is provided with a top plate used for placing a refrigeration air conditioner duct type air conditioner. The lifting mechanism is movably arranged on the supporting frame in a penetrating mode and used for lifting the top plate up and down; the height fine adjustment mechanism is arranged on one side of the lifting mechanism and used for finely adjusting the height of the top plate; and the clamping mechanism is movably arranged at the upper end of the top plate and used for clamping and fixing the two ends of the refrigeration air conditioner duct type air conditioner placed on the top plate, and shaking is avoided. According to the auxiliary device for installing the air duct machine of the refrigeration air conditioner, height adjustment, accurate positioning and stable clamping can be achieved, and the auxiliary device flexibly adapts to installation of air duct machines of different sizes and structures.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner installation auxiliary equipment, in particular to an installation auxiliary device for a refrigeration air conditioner duct unit. Background Art

[0002] The ducted air conditioner uses air as the transmission medium to deliver the cooling air to each room through the air duct. It is mainly composed of an indoor unit, an outdoor unit and the air ducts connecting them. The indoor unit is usually installed in the ceiling and does not occupy indoor space. The appearance is relatively simple and beautiful, which can better integrate with the interior decoration style.

[0003] Application No. 202022629787.1 discloses an air conditioner installation auxiliary frame, including an upper frame group and a lower frame group. The upper frame group includes a support plate, on which an air conditioner left baffle, an air conditioner right baffle, a groove and a guide rod are provided; the lower frame group includes a base, and a lifting device is installed between the base and the support plate; the upper frame group can realize automatic assembly of nuts and hangers, and the lifting device can transport the duct air conditioner to the required height position, which is safe, convenient and has high installation efficiency. The above scheme mainly limits the air conditioner by the left baffle and the right baffle of the air conditioner. Although there are structures such as a movable plate, the second motor and nut sleeve on the movable plate are mainly used to assist in the installation of the flange nut. The clamping and fixing function of the air conditioner itself is relatively weak, and it cannot adapt well to air conditioners of different sizes. It is also difficult to ensure that the air conditioner will not shake during the installation process. Moreover, it mainly uses the motor to drive the screw to realize the lifting and lowering of the support plate, and can only perform rough height adjustment, which is difficult to meet the scenario with precise requirements for the installation height of the air conditioner. Summary of the Invention

[0004] In response to the above-mentioned problems, the present invention aims to provide an auxiliary device for installing duct units for refrigeration and air conditioning, which can achieve height adjustment, precise positioning, stable clamping and flexibly adapt to the installation of duct units of different sizes and structures to meet diverse installation needs.

[0005] The main idea of the technical solution adopted by the present invention is as follows: by setting a lifting mechanism, which consists of a lifting shaft and a lifting assembly including components such as a hydraulic rod, a transmission block, and a transverse rod, the hydraulic rod drives the transverse rod to move, and through the cooperation of the transmission block and the long rod block, the lifting rod and the top plate connected thereto are driven to move up and down, thereby adjusting the height of the duct unit to meet the requirements of different installation heights; in order to achieve more precise height adjustment, a height fine-adjustment mechanism is introduced, and a mounting frame is provided on one side of the lifting rod, and a threaded rod and a threaded block are installed inside. By driving the threaded rod to adjust the position of the threaded block, the rotation angle of the positioning rod is adjusted to achieve fine-tuning of the lifting rod, thereby meeting the high-precision requirements for fine-tuning the height of the duct unit; by providing a clamping mechanism at the upper end of the top plate, which includes a bidirectional screw, a positioning block and a motor, the motor drives the bidirectional screw to rotate, so that the two sliders sleeved on the outside thereof move toward or in opposite directions along the thread direction, driving the positioning block connected to the slider to slide in the limit groove of the top plate, thereby clamping and fixing the two ends of the refrigeration and air-conditioning duct unit placed on the top plate to prevent shaking during installation.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: An auxiliary device for installing a ducted unit for a refrigeration and air conditioning unit, comprising a base and: The support frame is arranged at the upper end of the base and extends vertically upward, and the top end of the support frame is provided with a top plate for placing the refrigeration and air conditioning duct unit; A lifting mechanism is movably provided on the support frame and is used to move the top plate up and down; A height fine-adjustment mechanism is provided on one side of the lifting mechanism and is used to fine-tune the height of the top plate; The clamping mechanism is movably arranged at the upper end of the top plate and is used to clamp and fix the two ends of the refrigeration and air conditioning duct unit placed on the top plate to prevent shaking.

[0007] In order to improve the structural strength and stability of the support frame and enhance the supporting capacity of the upper components and duct machines.

[0008] Furthermore: the support frame includes a left support rod and a right support rod arranged on the base and a connecting plate connected between the left support rod and the right support rod.

[0009] In order to achieve flexible lifting of the top plate and meet different installation height requirements.

[0010] Furthermore, the lifting mechanism includes: A lifting shaft is provided below the top plate and is slidably connected to the left support rod and the right support rod respectively; The lifting assembly is arranged between the left support rod and the right support rod and is used to drive the lifting shaft to move up and down.

[0011] In order to ensure the reliability of the lifting component transmission, the hydraulic power is converted into vertical lifting motion through the coordinated transmission of multiple components.

[0012] Furthermore, the lifting assembly is composed of a transmission block, a transverse rod, a long rod block, a lifting rod and a positioning rod from front to back; Among them, the transverse rod has a circular ring structure at its middle part, which penetrates and is slidably arranged on the left support rod and the right support rod; A hydraulic rod is rotatably arranged at the bottom of the right support rod, and its telescopic end is connected to one end of the transverse rod; The lifting rod has a circular ring structure in the middle, which penetrates and is slidably arranged on the top plate and the connecting plate; The transmission block is arranged on the front side of the transverse rod and penetrates the transverse rod and is slidably connected with the long rod block; The blocking rod is arranged at the rear side of the lifting rod and passes through the lifting rod and is arranged in cooperation with the long rod block.

[0013] In order to meet the high-precision requirements of the duct machine installation height, the screw transmission principle is used to achieve precise adjustment of small displacements.

[0014] Furthermore: the height fine-adjustment mechanism includes: A mounting frame is provided on one side of the lifting rod and has a threaded rod installed inside the mounting frame; A threaded block, threadedly connected to the threaded rod, wherein the threaded block is connected to the locking rod; Among them, the rotation angle of the positioning rod is adjusted by driving the threaded rod to achieve fine adjustment of the lifting rod, which is used to fine-tune the height of the refrigeration and air-conditioning duct unit.

[0015] In order to prevent the duct machine from shaking during installation, a symmetrical bidirectional screw drive structure is adopted to achieve stable clamping of the duct machine.

[0016] Furthermore, the clamping mechanism includes: A bidirectional screw is arranged in a receiving groove opened above the top plate; The positioning block is movably arranged above the top plate, and two sliders are provided on both sides of its bottom. The slider at one end is threadedly connected to the bidirectional screw, and the slider at the other end slides inside the limiting groove opened above the top plate; The motor is arranged in the installation slot above the top plate and is used to drive the bidirectional screw to rotate.

[0017] In order to reduce the impact of vibration during device operation and protect the duct machine and the device itself.

[0018] Furthermore: a shock-absorbing spring is respectively provided at the bottom of the lifting rod and the bottom of the lifting shaft.

[0019] A method for using the auxiliary device for installing a refrigeration and air conditioning duct unit according to any one of the above items comprises the following steps: S1: moving the device to the installation location of the refrigeration and air conditioning duct unit, and placing the refrigeration and air conditioning duct unit on the top plate; S2: Start the clamping mechanism to clamp and fix the two ends of the refrigeration and air conditioning duct unit; S3: Start the lifting mechanism to lift the refrigeration and air conditioning duct unit and complete the rough adjustment of its height; S4: Start the height fine-adjustment mechanism to complete the fine adjustment of the height of the refrigeration and air conditioning duct unit; S5: After completing the height adjustment and fixing of the refrigeration and air conditioning duct unit, the construction personnel carry out subsequent installation and connection operations on the duct unit.

[0020] The beneficial effects of the present invention are: 1. The lifting shafts on the left and right support rods cooperate with the lifting components composed of hydraulic rods, transmission blocks, etc. to realize the up and down lifting of the top plate. When actually installing the refrigeration and air-conditioning duct unit, the construction workers only need to operate the hydraulic rods to flexibly adjust the height of the top plate and quickly transport the duct unit to the required installation position, which greatly reduces the difficulty of manual handling and installation, reduces construction time and labor costs, significantly improves installation efficiency, and makes the entire installation process more efficient and convenient.

[0021] 2. Through the cooperation of the threaded rod and the threaded block on one side of the lifting rod, the rotation angle of the positioning rod can be accurately adjusted, thereby achieving fine-tuning of the lifting rod, meeting the precise requirements of the refrigeration and air-conditioning duct unit for the installation height, and adjusting the height of the duct unit to the optimal state.

[0022] 3. The clamping mechanism uses a bidirectional screw, a slider and a positioning block to work together. The motor drives the bidirectional screw to rotate, driving the slider to slide in the limit groove, thereby firmly clamping the two ends of the refrigeration and air-conditioning duct unit. When installing the air-conditioning duct unit, it can effectively prevent it from shaking due to vibration, displacement, etc., ensuring stable and reliable installation, and flexibly adapting to air-conditioning duct units of various sizes and models. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Front view structural diagram; Figure 3 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 4 For the present invention Figure 1 Rear view structure diagram; Figure 5 This is a schematic diagram of the lifting mechanism of the present invention; Figure 6 This is a schematic diagram of the explosion structure of the lifting mechanism of the present invention on the support frame; Figure 7 This is a schematic diagram of the explosion structure of the lifting mechanism of the present invention; Figure 8 This is a schematic diagram of the height fine-adjustment mechanism of the present invention; Figure 9 This is a schematic diagram of the long rod block structure of the present invention; Figure 10 For the present invention Figure 9 Side view structural diagram; Figure 11 This is a schematic diagram of the lifting rod structure of the present invention; Figure 12 This is a schematic diagram of the transmission block structure of the present invention; Figure 13 Schematic diagram of the clamping mechanism of the present invention; Figure 14 This is a schematic diagram of the top plate structure of the present invention; Figure 15 It is a schematic diagram of the connection relationship of the clamping structure of the present invention.

[0024] Among them: 1. Base; 2. Support frame; 201. Left support rod; 202. Right support rod; 203. Connecting plate; 3. Top plate; 301. Limiting groove; 302. Accommodating groove; 4. Lifting mechanism; 401. Lifting shaft; 402. Hydraulic rod; 403. Transmission block; 4031. Sliding groove; 404. Transverse rod; 405. Long rod block; 4051. Fixed block; 4052. Tilting long rod; 4053. Raised strip; 406. Lifting rod; 407. Positioning rod; 5. Height fine-adjustment mechanism; 501. Mounting frame; 502. Threaded rod; 503. Threaded block; 6. Clamping mechanism; 601. Bidirectional screw; 602. Positioning block; 603. Motor; 604. Slider; 7. Shock-absorbing spring. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] The inventors have found that the existing air-conditioning installation auxiliary device has relatively weak clamping and fixing functions for the air-conditioning itself, cannot adapt well to air-conditioners of different sizes, and it is difficult to ensure that the air-conditioning will not shake during the installation process. Moreover, it mainly relies on the motor to drive the screw to achieve the lifting and lowering of the support plate, and can only perform rough height adjustment, which is difficult to meet the scenarios with precise requirements for the installation height of the air-conditioning.

[0027] Based on the above findings, the present application proposes an auxiliary device for the installation of refrigeration and air-conditioning duct units, which realizes the up and down lifting of the lifting rod and the top plate connected to it by setting a lifting mechanism, thereby realizing the adjustment of the height of the duct unit to adapt to the requirements of different installation heights; introduces a height fine-tuning mechanism to realize fine-tuning of the lifting rod by adjusting the rotation angle of the positioning rod, thereby meeting the high-precision requirements for fine-tuning the height of the duct unit; and sets a clamping mechanism at the upper end of the top plate to clamp and fix the two ends of the refrigeration and air-conditioning duct unit placed on the top plate to prevent shaking during the installation process.

[0028] Example 1 See Figures 1-15 The present application discloses an auxiliary device for installing a refrigeration and air conditioning duct unit, comprising a base 1 as the basic part of the entire device. The four legs of the base 1 are respectively provided with four universal wheels to facilitate the movement of the device.

[0029] Next, a support frame 2 is fixedly mounted on the upper end of the base 1 and extends vertically upward. The support frame 2 includes a left support rod 201 and a right support rod 202 arranged relative to the base 1, and a connecting plate 203 connected between the left support rod 201 and the right support rod 202. The left support rod 201 is taller than the right support rod 202. Both the left support rod 201 and the right support rod 202 are long rod-shaped structures perpendicular to the base 1. Hollow steel pipes can be used to reduce weight while ensuring strength. The connecting plate 203 is a horizontally arranged plate-like structure, with its ends respectively welded or bolted to the left support rod 201 and the right support rod 202.

[0030] The upper ends of the left support rod 201 and the right support rod 202 are respectively provided with a lifting shaft 401, and the lifting shaft 401 can slide up and down relative to the left support rod 201 and the right support rod 202. A shock-absorbing spring 7 is installed at the bottom of the lifting shaft 401 to absorb vibration during the sliding process of the lifting shaft 401 and reduce the impact of vibration on the device during the operation of the equipment. The top support of the lifting shaft 401 is provided with a top plate 3, which is driven by the lifting and lowering of the lifting shaft 401 to move the top plate 3 up and down to adjust the height. The top plate 3 is used to place the refrigeration and air conditioning duct unit to be installed. It is a horizontally arranged plate-like structure. Its size is designed according to the size of common refrigeration and air conditioning duct units and can fully support the duct unit. The upper surface of the top plate 3 is flat to ensure the stability of the duct unit.

[0031] Furthermore, the lifting mechanism 4 is movable and is arranged on the support frame 2, and is used to lift the top plate 3 up and down to facilitate the adjustment of the height of the refrigeration and air conditioning duct unit, and includes a lifting shaft 401 and a lifting assembly.

[0032] Specifically, the lifting shaft 401 is supported and arranged below the top plate 3 and is slidingly connected to the left support rod 201 and the right support rod 202 respectively.

[0033] The lifting assembly is set between the left support rod 201 and the right support rod 202, and is used to drive the lifting shaft 401 to move up and down. The lifting assembly includes a hydraulic rod 402, a transmission block 403, a transverse rod 404, a long rod block 405, a lifting rod 406 and a positioning rod 407.

[0034] The middle portion of the transverse rod 404 is a circular ring structure, and both ends are rod-shaped structures, which penetrate and are slidably arranged on the left support rod 201 and the right support rod 202.

[0035] The hydraulic rod 402 is hingedly arranged at the bottom of the right support rod 202, and its telescopic end is connected to one end of the transverse rod 404. By driving the hydraulic rod 402 to telescope, the transverse rod 404 can be moved horizontally on the left and right support rods.

[0036] The middle part of the lifting rod 406 is a circular ring structure, and the two ends are rod-shaped structures. It passes through and is slidably set on the top plate 3 and the connecting plate 203. The bottom end of the lifting rod 406 is provided with a shock-absorbing spring 7 for absorbing vibration during the up and down movement of the lifting rod 406, thereby reducing the impact of vibration on the device during the operation of the equipment. Driven by the transverse rod 404, the lifting rod 406 slides up and down along the through holes on the top plate 3 and the connecting plate 203, thereby driving the top plate 3 and the air duct machine placed on the top plate 3 to move up and down.

[0037] The transmission block 403 is arranged on the front side of the transverse rod 404, and passes through the transverse rod 404 and is slidably connected to the long rod block 405. The transmission block 403 is a cylindrical solid block, which is used to convert the horizontal movement of the transverse rod 404 into the vertical movement of the lifting rod 406. The diameter of the transmission block 403 matches the inner diameter of the circular ring structure in the middle of the transverse rod 404. A sliding groove 4031 is provided at the bottom of the transmission block 403 to match the long rod block 405.

[0038] The long rod block 405 consists of a cylindrical fixed block 4051 and an inclined long rod 4052 fixedly connected to the fixed block 4051. The diameter of the fixed block 4051 matches the inner diameter of the circular ring structure in the middle of the lifting rod 406. A convex strip 4053 is provided on the side of the fixed block 4051 close to the lifting rod 406.

[0039] The locking rod 407 is arranged on the rear side of the lifting rod 406, and passes through the lifting rod 406 and is cooperated with the long rod block 405. The locking rod 407 is in the shape of a slender rod, one end of which is a flat straight rod, and the other end extends two parallel fork arms equidistantly along the longitudinal direction to form a fork-shaped structure. The protrusion 4053 is cooperated with the locking rod 407.

[0040] Among them, from front to back are the transmission block 403, the transverse rod 404, the long rod block 405, the lifting rod 406, and the positioning rod 407.

[0041] When the hydraulic rod 402 drives the transverse rod 404 to move horizontally, the transmission block 403 will move horizontally synchronously with the transverse rod 404 under the drive of the transverse rod 404. At the same time, the transmission block 403 slides along the direction of the inclined long rod 4052 of the long rod block 405, thereby driving the lifting rod 406 to move up and down, thereby realizing the height adjustment of the air duct machine. At this time, due to the cooperation and positioning of the convex strip 4053 on the long rod block 405 and the positioning rod 407, the long rod block 405 only moves up and down without rotating.

[0042] Next, the height fine-adjustment mechanism 5 is arranged on one side of the lifting rod 406 for achieving height fine-adjustment of the refrigeration and air conditioning duct unit, and includes a mounting frame 501 , a threaded rod 502 and a threaded block 503 .

[0043] Specifically, the installation frame 501 is provided on one side of the lifting rod 406 , and a threaded rod 502 is installed inside the installation frame 501 . A threaded block 503 is threadedly connected to the threaded rod 502 , and the threaded block 503 is fixedly connected to the positioning rod 407 .

[0044] When the threaded rod 502 rotates, the threaded block 503 will move along the axial direction of the threaded rod 502, thereby driving the angle of the positioning rod 407 to change. Since the positioning rod 407 is coordinated with the convex strip 4053 on the long rod block 405, it will drive the angle of the long rod block 405 to change, thereby driving the lifting rod 406 to produce a small range of displacement and lifting, thereby achieving fine adjustment of the height of the top plate 3, and ultimately achieving the purpose of fine adjustment of the height of the refrigeration and air-conditioning duct unit.

[0045] Next, the clamping mechanism 6 is movably arranged on the upper end of the top plate 3 to clamp and fix the two ends of the refrigeration and air conditioning duct unit placed on the top plate 3 to prevent shaking, and includes a bidirectional screw 601, a positioning block 602 and a motor 603.

[0046] Specifically, two receiving slots 302 and two limiting slots 301 are provided on the top plate 3 to provide path and direction constraints for the sliding of the locking block 602. The limiting slot 301 is located on one side of the receiving slot 302, and the two are arranged parallel to each other.

[0047] The bidirectional screw 601 is a rod-shaped structure with two oppositely threaded sections. Its ends are mounted via bearings on the two side walls of a receiving slot 302 defined above the top plate 3, allowing it to rotate freely within the slot 302. Driven by a motor 603, the bidirectional screw 601 rotates, and its two oppositely threaded sections drive the locking blocks 602 at its ends to move toward or away from each other, thereby tightening and loosening the refrigeration and air conditioning duct unit.

[0048] The positioning block 602 is an L-shaped block structure, which is movably arranged above the top plate 3. Two sliders 604 are arranged on both sides of its bottom. The slider 604 at one end is threadedly connected to the bidirectional screw 601, and the slider 604 at the other end slides inside the limiting groove 301 opened above the top plate 3.

[0049] The motor 603 is disposed inside a mounting slot opened above the top plate 3 and is used to drive the bidirectional screw 601 to rotate.

[0050] The motor 603 drives the bidirectional screw 601 to rotate. Since the two outer threads of the bidirectional screw 601 are in opposite directions, the bidirectional screw 601 drives the slider 604 to move in opposite directions when it rotates, and then drives the blocking block 602 to move linearly along the limiting groove 301, thereby clamping the refrigeration and air conditioning duct machine to prevent it from shaking during the installation process.

[0051] Example 2 See Figures 1-15 The present application discloses a method for using the auxiliary device for installing a refrigeration and air conditioning duct unit according to any one of the above items, comprising the following steps: S1: moving the device to the installation position of the refrigeration and air conditioning duct unit, and placing the refrigeration and air conditioning duct unit on the top plate 3; S2: Start the motor 603 installed in the middle of the bidirectional screw 601. The motor 603 drives the bidirectional screw 601 to rotate, and at the same time drives the two sliders 604 to move in the directions toward each other along the bidirectional screw 601, thereby driving the positioning block 602 to slide in the limiting groove 301, so that the two positioning blocks 602 are close to each other, clamping the two ends of the refrigeration and air conditioning duct unit placed on the top plate 3, thereby fixing the refrigeration and air conditioning duct unit and preventing it from shaking during installation; S3: Start the hydraulic rod 402. The telescopic end of the hydraulic rod 402 pushes the transverse rod 404 to move horizontally on the left support rod 201 and the right support rod 202. The transverse rod 404 drives the transmission block 403 to move synchronously. The transmission block 403 slides along the inclined long rod 4052 of the long rod block 405, thereby driving the lifting rod 406 to move up and down. The lifting rod 406 drives the top plate 3 and the refrigeration and air conditioning duct unit placed on the top plate 3 to move up and down through the lifting shaft 401, completing the preliminary height adjustment; S4: Drive the threaded rod 502 in the installation frame 501 to rotate, and the threaded rod 502 drives the threaded block 503 to move axially. The threaded block 503 drives the locking rod 407 connected thereto to change its rotation angle. The locking rod 407 cooperates with the ridge 4053 on the long rod block 405, driving the long rod block 405 to change its angle, thereby causing the lifting rod 406 to move up and down within a small range, thereby achieving fine adjustment of the height of the top plate 3 and completing fine adjustment of the installation height of the refrigeration and air conditioning duct unit; S5: After completing the height adjustment and fixing of the refrigeration and air conditioning duct unit, the construction personnel carry out subsequent installation and connection operations on the duct unit.

[0052] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for installing a ducted air conditioner for refrigeration and air conditioning, comprising a base (1), characterized in that: Also includes: A support frame (2) is provided at the upper end of the base (1) and extends vertically upward, and a top plate (3) for placing a refrigeration and air conditioning duct unit is provided at the top end thereof; A lifting mechanism (4) is movably disposed on the support frame (2) and is used to lift the top plate (3) up and down; A height fine-adjustment mechanism (5) is provided on one side of the lifting mechanism (4) and is used to fine-adjust the height of the top plate (3); The clamping mechanism (6) is movably arranged on the upper end of the top plate (3) and is used to clamp and fix the two ends of the refrigeration and air conditioning duct machine placed on the top plate (3) to prevent shaking.

2. The auxiliary device for installing a ducted unit for refrigeration and air conditioning according to claim 1, characterized in that: The support frame (2) comprises a left support rod (201) and a right support rod (202) arranged on the base (1), and a connecting plate (203) connected between the left support rod (201) and the right support rod (202).

3. The auxiliary device for installing a duct unit for refrigeration and air conditioning according to claim 1, characterized in that: The lifting mechanism (4) comprises: A lifting shaft (401) is provided below the top plate (3) and is slidably connected to the left support rod (201) and the right support rod (202) respectively; The lifting assembly is arranged between the left support rod (201) and the right support rod (202) and is used to drive the lifting shaft (401) to move up and down.

4. The auxiliary device for installing a duct unit for refrigeration and air conditioning according to claim 3, characterized in that: The lifting assembly comprises, from front to back, a transmission block (403), a transverse rod (404), a long rod block (405), a lifting rod (406) and a positioning rod (407); The transverse rod (404) has a circular ring structure at its center, which penetrates and is slidably arranged on the left support rod (201) and the right support rod (202); A hydraulic rod (402) is rotatably mounted on the bottom of the right support rod (202), and its telescopic end is connected to one end of the transverse rod (404); A lifting rod (406), the middle portion of which is a circular ring structure, passes through and is slidably arranged on the top plate (3) and the connecting plate (203); The transmission block (403) is arranged on the front side of the transverse rod (404), passes through the transverse rod (404) and is slidably connected to the long rod block (405); The positioning rod (407) is arranged at the rear side of the lifting rod (406), passes through the lifting rod (406) and is arranged in cooperation with the long rod block (405).

5. The auxiliary device for installing a duct unit for refrigeration and air conditioning according to claim 1, characterized in that: The height fine-adjustment mechanism (5) comprises: A mounting frame (501) is provided on one side of the lifting rod (406) and has a threaded rod (502) installed therein; A threaded block (503) is threadedly connected to the threaded rod (502), and the threaded block (503) is connected to the locking rod (407); The threaded rod (502) is driven to adjust the rotation angle of the positioning rod (407) to achieve fine adjustment of the lifting rod (406), thereby finely adjusting the height of the refrigeration and air conditioning duct unit.

6. The auxiliary device for installing a duct unit for refrigeration and air conditioning according to claim 1, characterized in that: The clamping mechanism (6) comprises: A bidirectional screw (601) is disposed inside a receiving groove (302) opened above the top plate (3); A positioning block (602) is movably arranged above the top plate (3), and two sliders (604) are arranged on both sides of its bottom, wherein the slider (604) at one end is threadedly connected to the bidirectional screw (601), and the slider (604) at the other end slides inside a limiting groove (301) provided above the top plate (3); The motor (603) is arranged inside the mounting slot opened above the top plate (3) and is used to drive the bidirectional screw (601) to rotate.

7. The auxiliary device for installing a ducted unit for refrigeration and air conditioning according to claim 4, characterized in that: Shock-absorbing springs (7) are respectively provided at the bottom of the lifting rod (406) and the bottom of the lifting shaft (401).

8. A method for using the auxiliary device for installing a refrigeration and air conditioning duct unit according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: moving the device to the installation location of the refrigeration and air conditioning duct unit, and placing the refrigeration and air conditioning duct unit on the top plate (3); S2: Start the clamping mechanism (6) to clamp and fix the two ends of the refrigeration and air conditioning duct unit; S3: Start the lifting mechanism (4) to lift and lower the refrigeration and air conditioning duct unit to complete the rough adjustment of its height; S4: Start the height fine adjustment mechanism (5) to complete the fine adjustment of the height of the refrigeration and air conditioning duct unit; S5: After completing the height adjustment and fixing of the refrigeration and air conditioning duct unit, the construction personnel carry out subsequent installation and connection operations on the duct unit.

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