Central air conditioner's air pipe maintenance support

Abstract

The utility model relates to central air conditioning maintenance equipment technical field, concretely relates to a central air conditioning air pipe maintenance support, including base and the two support frames of base top symmetry installation, the inside of support frame is equipped with lifting device, the top of lifting device is equipped with operation platform, wherein, lifting device includes with the first lifting rod of support frame inside sliding connection, the second lifting rod of first lifting rod inside sliding connection, install self locking assembly on lifting device, the utility model lifting device can realize the height adjustment of operation platform, satisfy the maintenance demand of different height, self locking assembly can lock the lifting rod after adjusting height, guarantee the stability in the use process, and need not motor drive, simple structure, convenient operation, low cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of central air conditioning maintenance equipment, specifically relating to a central air conditioning duct maintenance bracket. Background Technology

[0002] Air ducts are piping systems used for air transport and distribution. They can be classified into various types according to their cross-sectional shape, such as circular ducts, rectangular ducts, and oval ducts, with rectangular ducts being the most widely used. In central air conditioning duct maintenance, traditional supports only allow maintenance personnel to climb and inspect the ducts, failing to provide effective support and making duct removal difficult, thus increasing the complexity of maintenance. Furthermore, some complex supports on the market require motors for lifting and clamping, which is cumbersome and costly. Therefore, this utility model proposes a central air conditioning duct maintenance support. Utility Model Content

[0003] To address the aforementioned shortcomings in the existing technology, this utility model provides a central air conditioning duct maintenance bracket, comprising a base and two support frames symmetrically installed on the top of the base. The support frames are equipped with a lifting device inside, and the top of the lifting device is equipped with an operating platform. The lifting device includes a first lifting rod that is slidably connected to the inside of the support frame, a second lifting rod that is slidably connected inside the first lifting rod, and a self-locking component installed on the lifting device; Secondly, the operating platform includes a support platform fixedly installed on the top of the second lifting rod. The support platform is equipped with a sliding clamping device. The sliding clamping device includes a first clamping plate and a second clamping plate symmetrically arranged on the upper end of the support platform. The lower ends of the first clamping plate and the second clamping plate are slidably connected to the sliding groove opened on the support platform. Furthermore, the sliding clamping device also includes a second rack fixedly installed at the bottom of the first clamping plate, with the teeth of the second rack facing upwards, and a first rack fixedly installed at the bottom of the second clamping plate, with the teeth of the first rack facing downwards. The first rack and the second rack are meshed with a gear rotatably connected to the middle of the support platform. The tails of the first rack and the second rack are fixedly connected to one end of a first spring, and the other end of the first spring is fixedly connected to the inner wall of the support platform. The first and second racks are installed in a staggered parallel configuration, which facilitates the synchronous movement of the first and second racks in opposite directions. Secondly, the self-locking assembly includes a second spring with one end fixedly connected to the inner wall of the support frame, and the other end of the second spring fixedly connected to the outer wall of the first ratchet rack. The tooth surface of the first ratchet rack engages with a second protrusion installed on the outer wall of the first lifting rod. The self-locking assembly also includes a third spring with one end fixedly connected to the inner wall of the first lifting rod, and the other end of the third spring fixedly connected to the outer wall of the second ratchet rack. The tooth surface of the second ratchet rack engages with a first protrusion installed on the outer wall of the second lifting rod. Meanwhile, a reset button is movably provided at the bottom of the support frame, one end of which passes through the outer wall of the support frame and connects to the bottom of the first ratchet; a reset rod is movably provided at the top of the first lifting rod, one end of which passes through the outer wall of the first lifting rod and connects to the top of the second ratchet, and the bottom of the reset rod is set as an inclined surface. When the first lifting rod falls, the top of the support frame contacts the inclined surface, pushing the lifting rod inward and squeezing the second ratchet, so that the second lifting rod is reset. Furthermore, a first handle is fixedly installed on the outer side of the first clamping plate and the second clamping plate, and a second handle is fixedly installed on the outer side of the support frame; four omnidirectional wheels are symmetrically installed on the bottom of the base.

[0004] Compared with the prior art, this utility model has the following advantages: 1. This utility model has a support and clamping function. The sliding clamping device can stably clamp air ducts of different sizes, while the operating platform can support the air ducts, making it convenient for maintenance personnel to disassemble and repair the air ducts.

[0005] 2. The lifting device of this utility model can realize the height adjustment of the operating platform to meet the maintenance needs of different heights; the self-locking component can lock the lifting rod after the height is adjusted to ensure stability during use, and it does not require motor drive, with simple structure, convenient operation and low cost.

[0006] 3. The casters at the bottom of the base facilitate the movement of the bracket, adapting to different maintenance scenarios; the reset button and reset lever facilitate the reset operation of the lifting device, improving ease of use. Attached Figure Description

[0007] Figure 1 This is a three-dimensional structural diagram of an embodiment of a central air conditioning duct maintenance bracket according to the present invention; Figure 2 This is a front sectional view of an embodiment of a central air conditioning duct maintenance bracket according to the present invention. Figure 3 This is an enlarged structural diagram of point A in an embodiment of a central air conditioning duct maintenance bracket of the present invention; Figure 4This is an enlarged structural diagram of section B of an embodiment of a central air conditioning duct maintenance bracket of the present invention; Figure 5 This is a schematic diagram of the sliding clamping device structure of an embodiment of a central air conditioning duct maintenance bracket according to the present invention. Figure 6 This is a schematic diagram of the internal structure of the sliding clamping device in an embodiment of a central air conditioning duct maintenance bracket of the present invention.

[0008] The reference numerals in the accompanying drawings include: 1. Support frame; 2. Base; 3. First lifting rod; 4. Support platform; 5. First clamping plate; 6. Second clamping plate; 7. First handle; 8. First rack; 9. Second rack; 10. Gear; 11. First spring; 12. Second lifting rod; 13. Caster wheel; 14. Reset button; 15. Second handle; 16. Second spring; 17. First ratchet; 18. Second ratchet; 19. Third spring; 20. First protrusion; 21. Reset rod; 22. Second protrusion; 23. Slide groove. Detailed Implementation

[0009] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0010] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0011] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0012] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0013] Example 1: like Figure 1-6 As shown, this utility model provides a technical solution: a central air conditioning duct maintenance bracket, including a base 2 and two support frames 1 symmetrically installed on the top of the base 2. The support frame 1 is provided with a lifting device inside, and the top of the lifting device is provided with an operating platform.

[0014] The lifting device includes a first lifting rod 3 slidably connected to the inside of the support frame 1, and a second lifting rod 12 slidably connected inside the first lifting rod 3. A self-locking assembly is installed on the lifting device. The self-locking assembly includes a second spring 16, one end of which is fixedly connected to the inner wall of the support frame 1, and the other end of which is fixedly connected to the outer wall of a first ratchet 17. The teeth of the first ratchet 17 engage with a second protrusion 22 installed on the outer wall of the first lifting rod 3. The self-locking assembly also includes a third spring 19, one end of which is fixedly connected to the inner wall of the first lifting rod 3, and the other end of which is fixedly connected to the outer wall of a second ratchet 18. The teeth of the ratchet 18 engage with the first protrusion 20 mounted on the outer wall of the second lifting rod 12; a reset button 14 is movably provided at the bottom of the support frame 1, one end of which passes through the outer wall of the support frame 1 and connects to the bottom of the first ratchet 17; a reset rod 21 is movably provided at the top of the first lifting rod 3, one end of which passes through the outer wall of the first lifting rod 3 and connects to the top of the second ratchet 18, and the bottom of the reset rod 21 is set as an inclined surface. When the first lifting rod 3 falls, the top of the support frame 1 contacts the inclined surface, pushing the lifting rod 3 inward and squeezing the second ratchet 18, so that the second lifting rod 12 is reset.

[0015] The operating platform includes a support platform 4 fixedly installed on the top of the second lifting rod 12. The support platform 4 is equipped with a sliding clamping device. The sliding clamping device includes a first clamping plate 5 and a second clamping plate 6 symmetrically arranged on the upper end of the support platform 4. The lower ends of the first clamping plate 5 and the second clamping plate 6 are slidably connected to the sliding groove 23 opened on the support platform 4. The sliding clamping device also includes a second rack 9 fixedly installed at the bottom of the first clamping plate 5. The teeth of the second rack 9 are arranged upward. A first rack 8 is fixedly installed at the bottom of the second clamping plate 6. The teeth of the first rack 8 are arranged downward. The first rack 8 and the second rack 9 are meshed with a gear 10 rotatably connected in the middle of the support platform 4. The tails of the first rack 8 and the second rack 9 are fixedly connected to one end of a first spring 11. The other end of the first spring 11 is fixedly connected to the inner wall of the support platform 4. The first rack 8 and the second rack 9 are installed in parallel with a staggered arrangement, which is conducive to the first rack 8 and the second rack 9 moving synchronously in opposite directions.

[0016] A first handle 7 is fixedly installed on the outer side of the first clamping plate 5 and the second clamping plate 6, and a second handle 15 is fixedly installed on the outer side of the support frame 1; four universal wheels 13 are symmetrically installed on the bottom of the base 2.

[0017] Working principle: In use, the bracket is moved to the bottom of the duct to be repaired by the caster wheel 13. Pulling the first handle 7 causes the first clamping plate 5 and the second clamping plate 6 to slide along the slide groove 23. The first clamping plate 5 drives the second rack 9 to move, and the second clamping plate 6 drives the first rack 8 to move. Since the first rack 8 and the second rack 9 are meshed with the gear 10 and installed in a staggered parallel manner, the first rack 8 and the second rack 9 move synchronously in opposite directions, thereby opening the first clamping plate 5 and the second clamping plate 6 and placing the duct on the support platform 4. Releasing the first handle 7 causes the first rack 8 and the second rack 9 to return to their original positions under the action of the first spring 11, which in turn causes the first clamping plate 5 and the second clamping plate 6 to clamp and fix the duct.

[0018] When adjusting the height, pulling the first lifting rod 3 upward causes the second protrusion 22 on the first lifting rod 3 to contact the tooth surface of the first ratchet 17, causing the first ratchet 17 to compress the second spring 16 and slide. After the second protrusion 22 passes the first ratchet 17, the first ratchet 17 returns to its original position under the action of the second spring 16 and engages with the second protrusion 22, thus achieving self-locking of the first lifting rod 3. Similarly, pushing the second lifting rod 12 upward causes the first protrusion 20 on the second lifting rod 12 to contact the tooth surface of the second ratchet 18, causing the second ratchet 18 to compress the third spring 19 and slide. After the first protrusion 20 passes the second ratchet 18, the second ratchet 18 returns to its original position under the action of the third spring 19 and engages with the first protrusion 20, thus achieving self-locking of the second lifting rod 12.

[0019] After maintenance is completed, press the reset button 14 to move the first ratchet 17 and separate it from the second protrusion 22. The first lifting rod 3 falls under the action of gravity. When the first lifting rod 3 falls, the top of the support frame 1 contacts the inclined surface at the bottom of the reset rod 21, pushing the reset rod 21 into the first lifting rod 3 and squeezing the second ratchet 18 to separate it from the first protrusion 20. The second lifting rod 12 resets under the action of gravity.

[0020] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software and methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A duct maintenance bracket for a central air conditioning system, characterized in that, Includes a base (2) and two support frames (1) symmetrically installed on the top of the base (2). The support frame (1) is equipped with a lifting device inside, and the top of the lifting device is equipped with an operating platform. The lifting device includes a first lifting rod (3) that is slidably connected to the inside of the support frame (1), a second lifting rod (12) that is slidably connected to the inside of the first lifting rod (3), and a self-locking component is installed on the lifting device; The operating platform includes a support platform (4) fixedly installed on the top of the second lifting rod (12). The support platform (4) is provided with a sliding clamping device. The sliding clamping device includes a first clamping plate (5) and a second clamping plate (6) symmetrically arranged on the upper end of the support platform (4). The lower ends of the first clamping plate (5) and the second clamping plate (6) are slidably connected to the sliding groove (23) opened on the support platform (4). The sliding clamping device further includes a second rack (9) fixedly installed at the bottom of the first clamping plate (5), with the teeth of the second rack (9) facing upwards. A first rack (8) is fixedly installed at the bottom of the second clamping plate (6), with the teeth of the first rack (8) facing downwards. The first rack (8) and the second rack (9) are meshed with a gear (10) rotatably connected to the middle of the support platform (4). The tails of the first rack (8) and the second rack (9) are fixedly connected to one end of a first spring (11), and the other end of the first spring (11) is fixedly connected to the inner wall of the support platform (4).

2. The central air conditioning duct maintenance bracket as described in claim 1, characterized in that: The first rack (8) and the second rack (9) are installed in parallel with a staggered arrangement, which is beneficial for the first rack (8) and the second rack (9) to move synchronously in opposite directions.

3. A central air conditioning duct maintenance bracket as described in claim 2, characterized in that: The self-locking assembly includes a second spring (16) with one end fixedly connected to the inner wall of the support frame (1), and the other end of the second spring (16) fixedly connected to the outer wall of the first ratchet (17). The tooth surface of the first ratchet (17) is engaged with the second protrusion (22) installed on the outer wall of the first lifting rod (3).

4. A central air conditioning duct maintenance bracket as described in claim 3, characterized in that: The self-locking assembly also includes a third spring (19) with one end fixedly connected to the inner wall of the first lifting rod (3), and the other end of the third spring (19) fixedly connected to the outer wall of the second ratchet (18). The tooth surface of the second ratchet (18) is engaged with the first protrusion (20) installed on the outer wall of the second lifting rod (12).

5. A central air conditioning duct maintenance bracket as described in claim 4, characterized in that: A reset button (14) is movably provided at the bottom of the support frame (1). One end of the reset button (14) passes through the outer wall of the support frame (1) and is connected to the bottom of the first ratchet (17).

6. A central air conditioning duct maintenance bracket as described in claim 5, characterized in that: A reset rod (21) is movably provided on the top of the first lifting rod (3). One end of the reset rod (21) passes through the outer wall of the first lifting rod (3) and is connected to the top of the second ratchet (18). The bottom of the reset rod (21) is set as an inclined surface. When the first lifting rod (3) falls, the top of the support frame (1) contacts the inclined surface, pushing the lifting rod (3) into the first lifting rod (3) and squeezing the second ratchet (18), so that the second lifting rod (12) is reset.

7. A central air conditioning duct maintenance bracket as described in claim 6, characterized in that: A first handle (7) is fixedly installed on the outer side of the first clamping plate (5) and the second clamping plate (6), and a second handle (15) is fixedly installed on the outer side of the support frame (1).

8. A central air conditioning duct maintenance bracket as described in claim 7, characterized in that: The base (2) is symmetrically equipped with four casters (13) at its bottom.

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