Lifting device for installation and maintenance of central air conditioner

Abstract

The utility model relates to the technical field of central air conditioner maintenance, and provides a lifting device for central air conditioner installation and maintenance, which comprises a base, the top of the base is fixedly connected with an installation frame, the middle of the top wall of the installation frame is slidably connected with a supporting plate penetrating through the top wall of the installation frame, and the top of the supporting plate is fixedly connected with a workbench. Movable toothed plates arranged in the vertical direction are fixedly connected to the two sides of the supporting plate correspondingly, a driving mechanism used for driving the movable toothed plates to vertically slide is arranged at one end of the top of the mounting frame, and anti-falling mechanisms used for limiting the movable toothed plates from falling downwards are arranged at the two ends of the inner side of the mounting frame correspondingly. In the ascending process of the movable toothed plate, the anti-falling mechanism can limit the movable toothed plate from sliding downwards all the time, so that the workbench can be prevented from falling downwards, and the problem that in the prior art, when meshing teeth of a gear are broken, a central air conditioner falls easily is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-conditioning maintenance, and in particular to a lifting device for installing and maintaining a central air-conditioning. Background Art

[0002] Central air conditioners are generally installed at high altitudes. However, when installing central air conditioners, a lifting device is required to install the central air conditioner at a higher altitude to facilitate the installation and maintenance of the central air conditioner.

[0003] For example, Chinese patent publication number CN215854902U discloses "a lifting device for central air-conditioning installation and maintenance, comprising a base, two fixed blocks are fixedly installed on the upper surface of the base, sliding grooves are provided on opposite surfaces of the two fixed blocks, sliders are slidably installed in the sliding grooves, support seats are fixedly installed on the upper ends of the two sliders, a load-bearing plate is provided on the upper surface of the support seat, a height fine-tuning device is fixedly installed between the load-bearing plate and the support seat, and a clamping device is fixedly installed on the load-bearing plate."

[0004] The above patent drives the "gear" to rotate through a "motor", wherein the "gear" is meshed with the "rack", and the meshing force of the "gear" drives the "rack" to slide in the vertical direction, which can adjust the height of the "load-bearing plate"; however, the gravity of the central air conditioner on the "load-bearing plate" of this patent is mainly borne by the meshing teeth between the "gear" and the "rack". Once the meshing teeth of the "gear" break after bearing the load for a long time, the "rack" will fall directly without restraint, which will cause serious safety accidents. Utility Model Content

[0005] The utility model provides a lifting device for installing and maintaining a central air conditioner, which solves the problem in the prior art that the central air conditioner is easily caused to fall when meshing teeth of a gear are broken.

[0006] The technical solution of the utility model is as follows: a lifting device for installing and maintaining a central air conditioner, comprising a base, a mounting frame is fixedly connected to the top of the base, a support plate that penetrates the top wall of the mounting frame is slidably connected to the middle of the top wall of the mounting frame, a workbench is fixedly connected to the top of the support plate, both sides of the support plate are fixedly connected to movable tooth plates arranged in a vertical direction, a driving mechanism for driving the movable tooth plate to slide vertically is arranged at one end of the top of the mounting frame, and anti-fall mechanisms for limiting the movable tooth plate from falling downward are arranged at both ends of the inner side of the mounting frame.

[0007] Preferably, both ends of the bottom of the base are rotatably connected to two running wheels, and the two running wheels at the same end are symmetrically distributed along the center line of the base.

[0008] Preferably, both ends of the bottom of the workbench are fixedly connected with guide rods, the bottom ends of the two guide rods pass through the top wall of the mounting frame and extend to the inner side of the mounting frame, and the two guide rods are respectively slidably connected to the two ends of the top wall of the mounting frame.

[0009] Preferably, the anti-fall mechanism includes a fixing plate, the fixing plate is fixedly connected to one end of the inner side of the mounting frame, the bottom end of the fixing plate is rotatably connected to a rotating shaft that passes through the fixing plate, one end of the rotating shaft is fixedly connected to a limiting claw, the limiting claw cooperates with the tooth groove of the corresponding movable tooth plate, a coil spring is sleeved on the rotating shaft, one end of the coil spring is fixedly connected to the limiting claw, the other end of the coil spring is fixedly connected to the fixing plate, and the other end of the rotating shaft is provided with an adjusting member for driving the limiting claw to disengage from the tooth groove of the movable tooth plate.

[0010] Preferably, the adjusting member includes a cylinder, which is fixedly mounted on one side of a fixed plate, the output end of the cylinder is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a rack, the end of the rotating shaft away from the limiting claw is fixedly connected to gear three, and the rack can engage with gear three through translation.

[0011] Preferably, guardrails are fixedly connected to the four sides of the top of the workbench, and two adjacent guardrails are fixed by welding.

[0012] The technical effects and advantages of the utility model are as follows: the movable tooth plate can be driven to slide in the vertical direction through the driving mechanism, which enables the support plate to drive the workbench to slide in the vertical direction, thereby adjusting the height of the workbench, and then the central air conditioner can be raised to a high place for installation; during the rising process of the movable tooth plate, the anti-fall mechanism can always limit the movable tooth plate from sliding downward, thus preventing the workbench from falling downward. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a lifting device for central air conditioning installation and maintenance according to the utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the structure of a lifting device for central air conditioning installation and maintenance according to the utility model. Figure 2 .

[0015] Figure 3 It is a structural schematic diagram of the anti-falling mechanism of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the adjusting member of the utility model.

[0017] The accompanying drawings are marked as follows: 1. base; 2. walking wheel; 3. mounting frame; 4. guide rod; 5. workbench; 6. support plate; 7. movable tooth plate; 8. driving mechanism; 9. anti-fall mechanism; 91. fixed plate; 92. rotating shaft; 93. limiting claw; 94. coil spring; 95. adjusting part; 951. cylinder; 952. connecting plate; 953. rack; 954. gear three. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figure 1 - Figure 2 The utility model provides a lifting device for installing and maintaining a central air conditioner, comprising a base 1, two running wheels 2 are rotatably connected at both ends of the bottom of the base 1, the two running wheels 2 at the same end are symmetrically distributed along the center line of the base 1, a mounting frame 3 is fixedly connected to the top of the base 1, a support plate 6 penetrating the top wall of the mounting frame 3 is slidably connected to the middle of the top wall of the mounting frame 3, a workbench 5 is fixedly connected to the top of the support plate 6, guide rods 4 are fixedly connected to both ends of the bottom of the workbench 5, the bottom ends of the two guide rods 4 penetrate the top wall of the mounting frame 3 and extend to the mounting frame 3, two guide rods 4 are slidably connected to the two ends of the top wall of the mounting frame 3 respectively, and the two guide rods 4 can guide the workbench 5 to ensure the stable movement of the workbench 5. Guardrails are fixedly connected to the top of the workbench 5 all around, and the two adjacent guardrails are fixed by welding; both sides of the support plate 6 are fixedly connected to movable tooth plates 7 arranged in the vertical direction, and one end of the top of the mounting frame 3 is provided with a driving mechanism 8 for driving the movable tooth plate 7 to slide vertically, and both ends of the inner side of the mounting frame 3 are provided with anti-falling mechanisms 9 for limiting the movable tooth plate 7 from falling downward.

[0020] The movable tooth plate 7 can be driven to slide in the vertical direction through the driving mechanism 8, which enables the support plate 6 to drive the workbench 5 to slide in the vertical direction, thereby adjusting the height of the workbench 5, and then the central air conditioner can be raised to a high place for installation; during the rising process of the movable tooth plate 7, the anti-fall mechanism 9 can always limit the movable tooth plate 7 from sliding downward, thus preventing the workbench 5 from falling downward.

[0021] Reference Figure 3The anti-fall mechanism 9 includes a fixed plate 91, which is fixedly connected to one end of the inner side of the mounting frame 3. The bottom end of the fixed plate 91 is rotatably connected to a rotating shaft 92 that passes through the fixed plate 91. One end of the rotating shaft 92 is fixedly connected to a limiting claw 93, and the limiting claw 93 cooperates with the tooth groove of the corresponding movable tooth plate 7. A coil spring 94 is sleeved on the rotating shaft 92, one end of the coil spring 94 is fixedly connected to the limiting claw 93, and the other end of the coil spring 94 is fixedly connected to the fixed plate 91. The other end of the rotating shaft 92 is provided with an adjusting member 95 for driving the limiting claw 93 to disengage from the tooth groove of the movable tooth plate 7.

[0022] Reference Figure 4 The adjusting member 95 includes a cylinder 951, which is fixedly mounted on one side of the fixed plate 91. The output end of the cylinder 951 is fixedly connected to a connecting plate 952, and the bottom of the connecting plate 952 is fixedly connected to a rack 953. The end of the rotating shaft 92 away from the limiting claw 93 is fixedly connected to a gear 3 954, and the rack 953 can be engaged with the gear 3 954 by translation. By controlling the cylinder 951, the connecting plate 952 drives the rack 953 to translate downward and engage with the gear 3 954, which causes the gear 3 954 to rotate, so that the rotating shaft 92 drives the limiting claw 93 to rotate, which also causes the limiting claw 93 to disengage from the tooth groove of the movable tooth plate 7, so that the movable tooth plate 7 can move downward without restriction, and the purpose of lowering the height of the workbench 5 can be achieved.

[0023] The working principle of the utility model is as follows: the driving mechanism 8 can drive the movable tooth plate 7 to slide in the vertical direction, so that the support plate 6 can drive the workbench 5 to slide in the vertical direction, so that the height of the workbench 5 can be adjusted, and then the central air conditioner can be raised to a high place for installation;

[0024] When the movable tooth plate 7 rises, the limiting claw 93 is rotated by the movable tooth plate 7 and disengaged from the tooth groove of the movable tooth plate 7. At this time, the coil spring 94 contracts to accumulate elastic potential energy. When the movable tooth plate 7 stops rising, the coil spring 94 releases the potential energy to make the limiting claw 93 fit with the tooth groove of the movable tooth plate 7 again, so that the movable tooth plate 7 can be limited from sliding downward, thereby preventing the workbench 5 from falling downward.

[0025] When the workbench 5 descends, the connecting plate 952 drives the rack 953 to translate downward and mesh with the gear three 954 by controlling the cylinder 951, which causes the gear three 954 to rotate, thereby causing the rotating shaft 92 to drive the limiting claw 93 to rotate, and the limiting claw 93 is disengaged from the tooth groove of the movable tooth plate 7, so that the movable tooth plate 7 can move downward without restriction, and the purpose of lowering the height of the workbench 5 can be achieved.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 lifting device for installing and maintaining a central air conditioner, comprising a base (1), a mounting frame (3) being fixedly connected to the top of the base (1), a support plate (6) penetrating the top wall of the mounting frame (3) being slidably connected to the middle of the top wall of the mounting frame (3), a workbench (5) being fixedly connected to the top of the support plate (6), and characterized in that: Both sides of the support plate (6) are fixedly connected with movable tooth plates (7) arranged in the vertical direction, one end of the top of the mounting frame (3) is provided with a driving mechanism (8) for driving the movable tooth plate (7) to slide vertically, and both ends of the inner side of the mounting frame (3) are provided with anti-falling mechanisms (9) for limiting the movable tooth plate (7) from falling downward.

2. A lifting device for installation and maintenance of a central air conditioner according to claim 1, characterized in that: Both ends of the bottom of the base (1) are rotatably connected to two running wheels (2), and the two running wheels (2) at the same end are symmetrically distributed along the center line of the base (1).

3. A lifting device for installation and maintenance of a central air conditioner according to claim 1, characterized in that: Both ends of the bottom of the workbench (5) are fixedly connected to guide rods (4), the bottom ends of the two guide rods (4) penetrate the top wall of the mounting frame (3) and extend to the inner side of the mounting frame (3), and the two guide rods (4) are respectively slidably connected to the two ends of the top wall of the mounting frame (3).

4. A lifting device for installation and maintenance of a central air conditioner according to claim 1, characterized in that: The anti-fall mechanism (9) comprises a fixing plate (91), wherein the fixing plate (91) is fixedly connected to one end of the inner side of the mounting frame (3), and the bottom end of the fixing plate (91) is rotatably connected to a rotating shaft (92) penetrating the fixing plate (91), and one end of the rotating shaft (92) is fixedly connected to a limiting claw (93), and the limiting claw (93) cooperates with the tooth groove of the corresponding movable tooth plate (7), and a coil spring (94) is sleeved on the rotating shaft (92), and one end of the coil spring (94) is fixedly connected to the limiting claw (93), and the other end of the coil spring (94) is fixedly connected to the fixing plate (91), and the other end of the rotating shaft (92) is provided with an adjusting member (95) for driving the limiting claw (93) to disengage from the tooth groove of the movable tooth plate (7).

5. A lifting device for installation and maintenance of a central air conditioner according to claim 4, characterized in that: The adjusting member (95) comprises a cylinder (951), wherein the cylinder (951) is fixedly mounted on one side of the fixing plate (91), the output end of the cylinder (951) is fixedly connected to a connecting plate (952), the bottom of the connecting plate (952) is fixedly connected to a rack (953), and one end of the rotating shaft (92) away from the limiting claw (93) is fixedly connected to a gear three (954), and the rack (953) can mesh with the gear three (954) by translation.

6. A lifting device for installation and maintenance of a central air conditioner according to claim 1, characterized in that: The top of the workbench (5) is fixedly connected with guardrails on all four sides, and two adjacent guardrails are fixed by welding.

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