Central air conditioner maintenance device

Abstract

The utility model discloses a central air conditioner maintenance device, relates to the field of air conditioner maintenance tools, and aims to solve the problems that a traditional climbing ladder is short in operation range, needs to be carried back and forth during maintenance, is inconvenient in use safety and convenience, and affects the construction safety of workers and the maintenance efficiency. A top plate is hinged to the upper ends of the two ladder assemblies together, the two ladder assemblies and the top plate are placed in a trapezoidal outline after being unfolded, clamping grooves are formed in the two sides of the top plate, extension plates are hinged into the clamping grooves, the two extension plates are symmetrically distributed with the center line of the top plate as the reference, and locking devices are installed between the top plate and the extension plates. The device has the advantages that the width of the device cannot be increased through the extension plate folded on the top plate, meanwhile, the operation width of the device during use can be increased through the unfolded extension plate, the construction operation range is widened, and the safety and efficiency of overhaul work are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner maintenance tools, in particular to a central air conditioner maintenance device. Background Art

[0002] With the continuous advancement of modern building technology and the improvement of people's quality of life, central air-conditioning systems have become standard equipment for large commercial buildings, office buildings and high-end residences. Central air-conditioning systems are favored by the majority of users for their advantages such as centralized air processing, efficient cooling and heating, energy saving and environmental protection. However, the complexity and maintenance difficulty of central air-conditioning systems have also increased, especially in terms of fault troubleshooting, which puts higher requirements on the professional skills and safety of maintenance personnel.

[0003] The indoor control unit and ventilation ducts of central air conditioners are usually installed on the roof. Although this design optimizes the spatial layout and improves the overall performance of the system, it also brings great inconvenience to maintenance work. When the central air conditioning system fails, maintenance personnel need to climb ladders to reach the roof for maintenance. Due to the complex roof environment and limited working space, the safety of high-altitude operations is directly related to the personal safety of maintenance personnel.

[0004] Traditional climbing ladders have a simple structure and usually only have basic climbing functions, which cannot meet the special needs of central air conditioning maintenance work. First, the upper end of the ladder is short in horizontal width, which requires maintenance personnel to frequently go up and down the ladder and move the ladder to a new work position when working in a wide range. This not only increases the workload of maintenance personnel, but also reduces maintenance efficiency. Secondly, traditional ladders also have certain safety hazards in terms of stability and anti-slip properties, which increases the risks for maintenance personnel during the operation process. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a central air conditioning maintenance device. Through this design, the problems of the short operating range of traditional climbing ladders, the need to carry them back and forth during maintenance, the inconvenience in safety and convenience of use, and the impact on workers' construction safety and maintenance efficiency are effectively solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model comprises two symmetrically distributed ladder frames, the upper ends of the two ladder frames are hinged with a top plate, and after unfolding, the two ladder frames and the top plate are placed in a trapezoidal outline, both sides of the top plate are provided with a card slot, and an extension plate is hinged in the card slot, and the two extension plates are symmetrically distributed with the center line of the top plate as a reference, and a locker is installed between the top plate and the extension plate;

[0007] The lock includes a first clamping block, a second clamping block and a bayonet, the first clamping block is rotatably connected to the extension plate, the second clamping block is rotatably connected to the top plate, the distance from the rotation center of the first clamping block to the hinge center of the extension plate is equal to the distance from the rotation center of the second clamping block to the rotation center of the extension plate, and the first clamping block and the second clamping block are both provided with through holes that cooperate with the bayonet.

[0008] Preferably, a hinge is fixedly connected to the bottom of the limiting groove, and the other end of the hinge is fixedly connected to the bottom surface of the extension plate, and the width of the extension plate is equal to the depth of the slot.

[0009] Preferably, anti-slip pads are installed on the ladder frame and the top plate.

[0010] Preferably, a groove is formed on the top plate, and a magnetic pad is fixedly connected to the bottom of the groove.

[0011] Preferably, thread grooves are provided on the bayonet pin and the through hole, and the bayonet pin is threadedly connected to the through hole.

[0012] Preferably, an anti-slip sleeve is fixedly connected to the lower end of the ladder frame, and a traction member is provided between the two ladder frames.

[0013] Preferably, the traction member includes two first support rods and one second support rod, the two first support rods are hinged to the two ladder frames respectively, a slot is provided on the side of the other end of the first support rod, the second support rod is hinged to the outside of the slot, and a block matching the slot is fixedly connected to the second support rod.

[0014] Compared with the prior art, the utility model has the following outstanding advantages:

[0015] The utility model is provided with two extension plates on both sides of the top plate, and the extension plates can widen the lateral length of the upper side of the device, and can increase the operating width of half a body length on both sides of the traditional ladder, while ensuring that the center of the operator still acts on the device, thereby increasing the operating range and ensuring the safety of the operator.

[0016] The two extension plates of the utility model are fixed on the top plate by a locker, which does not increase the volume of the device and is easy to carry. At the same time, the locker can fix and limit the two extreme positions of the extension plates, which is convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the first state of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the second state of the utility model.

[0019] Figure 3 It is a schematic diagram of the left side structure of the first state of the utility model.

[0020] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of A.

[0021] Figure 5 This is a schematic diagram of the bottom plate connection structure in the second state of the utility model.

[0022] Numbers in the figure: 1, ladder frame; 2, top plate; 3, slot; 4, extension plate; 5, lock; 501, first block; 502, second block; 503, latch; 504, through hole; 6, hinge; 7, anti-slip pad; 8, groove; 9, magnetic pad; 10, anti-slip sleeve; 11, first support rod; 12, second support rod; 13, slot; 14, block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model are clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example 1

[0024] Please see attached Figure 1-5 The present embodiment provides a central air conditioning maintenance device: it includes two symmetrically distributed ladder frames 1, and the upper ends of the two ladder frames 1 are hinged with a top plate 2. After unfolding, the two ladder frames 1 and the top plate 2 are placed in a trapezoidal outline. Slots 13 are opened on both sides of the top plate 2, and an extension plate 4 is hinged in the slot 13. The two extension plates 4 are symmetrically distributed with the center line of the top plate 2 as a reference, and a locker 5 is installed between the top plate 2 and the extension plate 4.

[0025] The two ladder frames 1 are in a straight row or telescopic type, the top plate 2 is located at the upper ends of the two ladder frames 1, the two ladder frames 1 are located at the front and rear sides of the top plate 2, and the two ladder frames 1 can rotate relative to the bottom plate. In the initial state, the two ladder frames 1 are placed normally. At this time, the distance between the two ladder frames 1 is the smallest, and the device occupies a small space, which is convenient for carrying and storage. When in use, the two ladder frames 1 are opened, and the side profiles of the two ladder frames 1 and the top plate 2 are a body structure with a small top and a large bottom. The larger space at the lower ends of the two ladder frames 1 can increase the stability of the device when it is placed. At the same time, the two ladder frames 1 apply bidirectional force to the top plate 2 to prevent the device from sliding sideways, thereby increasing the stability and safety of the device.

[0026] The locker 5 includes a first clamping block 501, a second clamping block 502 and a bayonet 503. The first clamping block 501 is rotatably connected to the extension plate 4, and the second clamping block 502 is rotatably connected to the top plate 2. The distance from the rotation center of the first clamping block 501 to the hinge center of the extension plate 4 is equal to the distance from the rotation center of the second clamping block 502 to the rotation center of the extension plate 4. Both the first clamping block 501 and the second clamping block 502 are provided with a through hole 504 that cooperates with the bayonet 503.

[0027] The hinge center of the extension plate 4 and the top plate 2 is located at the midpoint of the first clamp block 501 and the second clamp block 502. When the extension plate 4 is stacked on the top plate 2, the first clamp block 501 and the second clamp block 502 are rotated to a vertical state. At this time, the latch 503 is inserted into the through hole 504 in a vertical plug-in manner to fix the extension plate 4 on the upper side of the top plate 2. When the extension plate 4 needs to be opened, the latch 503 is pulled out and the extension plate 4 is flipped outward by one hundred and eighty degrees. Then, the first clamp block 501 and the second clamp block 502 are rotated, and the latch pin 503 is inserted into the through hole 504 in a horizontal plug-in manner to complete the fixation of the extension plate 4.

[0028] The hinge 6 installed in the limit groove can be flipped 180 degrees to meet the two limit states of the extension plate 4 relative to the top plate 2. At the same time, the thickness of the limit groove is the same as the thickness of the extension plate 4. After the extension plate 4 is flipped outward, the lower end of the extension plate 4 just contacts the ground of the limit groove. The limit groove has a good supporting and limiting effect on the extension plate 4, ensuring the stability of the extension plate 4 after it is unfolded.

[0029] The anti-skid pads 7 installed on the pedals of the ladder frame 1 and the top plate 2 can increase the friction coefficient to prevent users from slipping when going up and down the ladder; further, small tools such as screws usually need to be removed during maintenance. Since these components are small, they are not easy to find or even lost after being placed. A placement groove is provided on the top plate 2, and small components such as screws are placed in the groove 8. The magnetic pad 9 at the bottom of the groove 8 can absorb the small metal components inside to prevent the small components from falling or being lost.

[0030] The overhead and the through hole 504 may also be connected by a thread, and the threaded connection ensures that the bayonet 503 is self-locking when entering the through hole 504, thereby preventing the bayonet 503 from slipping out of the through hole 504. Example 2

[0031] The structure of this embodiment is the same as the above-mentioned embodiment, and the specific difference of this embodiment is that: the lower end of the ladder frame 1 is fixedly connected with an anti-slip sleeve 10, and a traction member is provided between the two ladder frames 1, and the traction member includes two first support rods 11 and a second support rod 12, and the two first support rods 11 are hinged to the two ladder frames 1 respectively, and the side of the other end of the first support rod 11 is provided with a groove 13, and the second support rod 12 is hinged on the outside of the groove 13, and the second support rod 12 is fixedly connected with a block 14 that cooperates with the groove 13.

[0032] The anti-skid cover 10 is made of rubber, and has uneven protrusions and depressions at the bottom of the anti-skid cover 10 . The anti-skid cover 10 increases the friction between the anti-skid cover 10 and the ground to prevent the ladder frame 1 from sliding sideways.

[0033] The traction member has a mutual traction force on the two ladder frames 1 to prevent the two ladder frames 1 from diverging at too large an angle. The traction member can be a rope with poor deformation ability. Furthermore, in order to prevent the two diverged ladder frames 1 from being relatively close to each other, the traction member is configured as two first support rods 11 and a first second support rod 12. When the two ladder frames 1 are unfolded, the two first support rods 11 and the second support rod 12 form a horizontal straight line. At the same time, the clamping block 14 is just stuck in the position of the clamping slot 13. The two first support rods 11 and the second support rod 12 can prevent the two opened ladder frames 1 from getting close to or away from each other, thereby ensuring the stability of the device when it is placed.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 central air conditioning maintenance device, characterized in that: The invention comprises two symmetrically distributed ladder frames (1), the upper ends of the two ladder frames (1) are hingedly connected to a top plate (2), and when unfolded, the two ladder frames (1) and the top plate (2) are placed in a trapezoidal profile, both sides of the top plate (2) are provided with limit grooves (3), an extension plate (4) is hingedly connected in the limit grooves (3), the two extension plates (4) are symmetrically distributed with the center line of the top plate (2) as a reference, and a locker (5) is installed between the top plate (2) and the extension plate (4); The locker (5) comprises a first clamping block (501), a second clamping block (502) and a bayonet (503); the first clamping block (501) is rotatably connected to the extension plate (4); the second clamping block (502) is rotatably connected to the top plate (2); the distance from the rotation center of the first clamping block (501) to the hinge center of the extension plate (4) is equal to the distance from the rotation center of the second clamping block (502) to the rotation center of the extension plate (4); and the first clamping block (501) and the second clamping block (502) are both provided with a through hole (504) that cooperates with the bayonet (503).

2. A central air conditioning maintenance device according to claim 1, characterized in that: A hinge (6) is fixedly connected to the bottom of the limiting groove (3), and the other end of the hinge (6) is fixedly connected to the bottom surface of the extension plate (4). The width of the extension plate (4) is equal to the depth of the limiting groove (3).

3. A central air conditioning maintenance device according to claim 1, characterized in that: Anti-slip pads (7) are installed on the ladder frame (1) and the top plate (2).

4. A central air conditioning maintenance device according to claim 1 or 3, characterized in that: The top plate (2) is provided with a groove (8), and a magnetic pad (9) is fixedly connected to the bottom of the groove (8).

5. A central air conditioning maintenance device according to claim 1, characterized in that: The bayonet pin (503) and the through hole (504) are provided with thread grooves, and the bayonet pin (503) and the through hole (504) are threadedly connected.

6. A central air conditioning maintenance device according to claim 1, characterized in that: The lower end of the ladder frame (1) is fixedly connected to an anti-slip sleeve (10), and a traction member is provided between the two ladder frames (1).

7. A central air conditioning maintenance device according to claim 6, characterized in that: The traction member comprises two first support rods (11) and a second support rod (12), the two first support rods (11) are respectively hinged to the two ladder frames (1), a clamping groove (13) is provided on the side of the other end of the first support rod (11), the second support rod (12) is hinged to the outside of the clamping groove (13), and a clamping block (14) matching the clamping groove (13) is fixedly connected to the second support rod (12).

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