A lifting device for central air conditioning maintenance

By designing a central air-conditioning maintenance lifting device including a moving mechanism, a lifting mechanism and an adjustment mechanism, the problem of maintenance personnel bent down to select tools to increase working strength and the device is inconvenient to move during the maintenance process, achieving a more stable and convenient maintenance process.

CN222744025UActive Publication Date: 2025-04-11CHONGQING RUIHENG CONSTR TECH CO LTD
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Patent Information

Application Number
CN202421286069.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-06
Publication Date
2025-04-11
Estimated Expiration
2034-06-06

AI Technical Summary

Technical Problem

During the maintenance process of the existing central air conditioner maintenance lifting device, maintenance personnel need to bend down to select tools, which increases the working intensity. At the same time, due to safety considerations, there is no universal wheel installed at the bottom, which makes the device inconvenient to move.

Method used

A central air conditioner maintenance lifting device including a moving mechanism, a lifting mechanism and a adjusting mechanism is designed. The moving mechanism moves the device through a universal wheel and an electric push rod, the lifting mechanism lifts the load table through a hydraulic cylinder, and the adjustment mechanism adjusts the height of the tool box through an electric lift and control parts.

Benefits of technology

Through the combination of universal wheels and electric push rods, the movement stability of the device is increased and sliding is avoided; the lifting and lowering of the hydraulic cylinder is achieved, and the control of the adjustment mechanism is controlled to avoid the situation where the maintenance personnel need to bend over to pick up the tools, reducing the working intensity.

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Abstract

The utility model discloses a lifting device for central air conditioning maintenance, which relates to the technical field of air conditioning maintenance, including a base, a bearing platform movably arranged on the top of the base, a guardrail fixedly connected to the top of the bearing platform, a protective door hinged to the guardrail, and a toolbox movably arranged on the top of the bearing platform, and also includes a moving mechanism arranged at the bottom of the base, a lifting mechanism arranged at the top of the base, and an adjustment mechanism arranged at the top of the bearing platform; the adjustment mechanism includes an electric lift fixedly connected to the top of the bearing platform, and a mounting plate fixedly connected to the output end of the electric lift for carrying the toolbox. The utility model is a lifting device for central air conditioning maintenance, which adjusts the height of the mounting plate and the toolbox by stepping on a foot pedal to make it resist a touch switch and start the electric lift, so as to adapt it to the height of the person, avoiding the situation where the person needs to bend over to take the tool.
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Description

Technical Field

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

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems, which centrally process air to meet comfort requirements. The principle of liquid vaporization refrigeration is used to provide the required cooling capacity for the air conditioning system to offset the heat load of the indoor environment, and the heating system provides the required heat for the air conditioning system to offset the heating and cooling load of the indoor environment. Central air conditioners are generally fixedly installed on the roof of the hall or room. When the central air conditioner is damaged and needs maintenance, the maintenance worker needs to stand on the lifting device to repair the central air conditioner.

[0003] The tools required for maintenance of the existing lifting device are generally stored inside a tool box, and the tool box is placed on the top of the workbench. When repairing the air conditioner, the maintenance personnel need to bend down to select the tools, which increases the work intensity of the maintenance personnel. In addition, most of the lifting devices for repairing central air conditioner hosts are not equipped with universal wheels at the bottom due to work safety considerations, which makes it inconvenient to move the device. Utility Model Content

[0004] The main purpose of the utility model is to provide a lifting device for central air-conditioning maintenance. By setting an adjusting mechanism, the problem that maintenance personnel need to bend down to select tools when repairing the air conditioner, which increases the work intensity of the maintenance personnel, is solved. By setting a moving mechanism, the problem that universal wheels are not installed at the bottom due to work safety considerations, which makes it inconvenient to move the device is solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lifting device for central air conditioner maintenance, comprising a base, a bearing platform movably arranged on the top of the base, a guardrail fixedly connected to the top of the bearing platform, a protective door hinged to the guardrail, and a tool box movably arranged on the top of the bearing platform, and also comprising a moving mechanism arranged at the bottom of the base, a lifting mechanism arranged at the top of the base, and an adjusting mechanism arranged at the top of the bearing platform;

[0007] The moving mechanism includes a universal wheel fixedly connected to the bottom of the base, an electric push rod fixedly connected to the center of the bottom of the base, and a support plate fixedly connected to the output end of the electric push rod for supporting the device;

[0008] The adjusting mechanism comprises an electric lift fixedly connected to the top of the carrying platform, and a mounting plate fixedly connected to the output end of the electric lift for carrying the tool box.

[0009] Preferably, the adjustment mechanism further comprises a first control member and a second control member disposed on the top of the bearing platform for controlling the electric lift;

[0010] The first control component includes a foot pedal hinged to the support platform, a clamping spring arranged on the top of the support platform, a mounting rod and a limit rod fixedly connected to the top of the support platform, and a touch switch fixedly connected to the top of the mounting rod.

[0011] Preferably, the second control member has the same composition structure as the first control member, and the second control member and the first control member are symmetrically arranged with respect to the central axis of the electric lift.

[0012] Preferably, the adjustment mechanism also includes a receiving groove opened on the top of the mounting plate, a return spring fixedly connected to the inner wall of the receiving groove, a transmission plate fixedly connected to the end surface of the return spring, and a suction cup fixedly connected to the top of the transmission plate.

[0013] Preferably, the adjustment mechanism further comprises a guide sleeve and a control switch fixedly connected to the bottom of the transmission plate, and a guide rod fixedly connected to the bottom of the storage groove.

[0014] Preferably, the regulating mechanism further comprises an air pump fixedly connected to the top of the transmission plate, an air intake pipe fixedly connected to the air inlet of the air pump, and an electrically controlled valve fixedly installed on the outer side wall of the air intake pipe.

[0015] Preferably, the lifting mechanism comprises a movable groove opened on the top of the base, and a hydraulic cylinder fixedly connected to the bottom of the movable groove;

[0016] The bottom of the bearing platform is fixedly connected to the output end of the hydraulic cylinder, the bottom of the bearing platform is fixedly connected to a protective sleeve, and the bottom of the protective sleeve is fixedly connected to a sealing ring.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. In the utility model, the device is moved to the specified position by the universal wheel, and then the electric push rod is started to drive the support plate to abut against the ground, so as to increase the contact area between the base and the ground and prevent the device from sliding. Then the protective door is opened and closed again when the personnel enter the top of the bearing platform. After that, the hydraulic cylinder is started to drive the bearing platform and the protective cover to move up until they move to the specified height, so that the personnel can repair the central air conditioner conveniently.

[0019] 2. In the utility model, by stepping on the foot pedal, the foot pedal compresses the clip spring until the bottom of the foot pedal abuts against the top of the limit rod, so that the foot pedal abuts against the touch switch, and then the touch switch starts the electric lift, so as to adjust the height of the mounting plate and the tool box to suit the height of the person, avoiding the situation where the person needs to bend over to pick up the tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the movable slot of the utility model;

[0023] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle;

[0024] Figure 5 This is a schematic diagram of the storage tank structure of the utility model;

[0025] Figure 6 For this utility model Figure 5 A magnified schematic diagram of structure B.

[0026] In the figure: 1. base; 2. bearing platform; 3. guardrail; 4. protective door; 5. tool box; 601. universal wheel; 602. electric push rod; 603. support plate; 701. hydraulic cylinder; 702. protective cover; 703. sealing ring; 801. electric lift; 802. mounting plate; 803. foot pedal; 804. clamping spring; 805. mounting rod; 806. touch switch; 807. limit rod; 808. reset spring; 809. transmission plate; 8010. suction cup; 8011. guide sleeve; 8012. guide rod; 8013. control switch; 8014. air pump; 8015. electric control valve. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] Embodiment 1: Figure 1-6As shown, a lifting device for central air conditioning maintenance includes a base 1, a bearing platform 2 movably arranged on the top of the base 1, a guardrail 3 fixedly connected to the top of the bearing platform 2, a protective door 4 hinged to the guardrail 3, and a tool box 5 movably arranged on the top of the bearing platform 2, and also includes a moving mechanism arranged at the bottom of the base 1, a lifting mechanism arranged at the top of the base 1, and an adjusting mechanism arranged at the top of the bearing platform 2;

[0029] The moving mechanism includes a universal wheel 601 fixedly connected to the bottom of the base 1, an electric push rod 602 fixedly connected to the center of the bottom of the base 1, and a support plate 603 fixedly connected to the output end of the electric push rod 602 for supporting the device;

[0030] The adjustment mechanism includes an electric lift 801 fixedly connected to the top of the carrying platform 2 , and a mounting plate 802 fixedly connected to the output end of the electric lift 801 for carrying the tool box 5 .

[0031] The lifting mechanism includes a movable groove opened on the top of the base 1, and a hydraulic cylinder 701 fixedly connected to the bottom of the movable groove;

[0032] The bottom of the support platform 2 is fixedly connected to the output end of the hydraulic cylinder 701, the bottom of the support platform 2 is fixedly connected to a protective sleeve 702, the bottom of the protective sleeve 702 is fixedly connected to a sealing ring 703, wherein the outer diameter of the protective sleeve 702 is equal to the inner diameter of the movable groove.

[0033] The device is moved to the designated position by the universal wheel 601, and then the electric push rod 602 is started to drive the support plate 603 to abut against the ground, so as to increase the contact area between the base 1 and the ground and prevent the device from sliding. Then, the protective door 4 is opened, and when the personnel enter the top of the bearing platform 2, the protective door 4 is closed again. After that, the hydraulic cylinder 701 is started to drive the bearing platform 2 and the protective cover 702 to move up until they move to the designated height, so that the personnel can repair the central air conditioner conveniently.

[0034] In the initial state, the device enhances the protection of the hydraulic cylinder 701 by squeezing the sealing ring 703 through the protective sleeve 702, and during operation, the hydraulic cylinder 701 is located inside the protective sleeve 702 and the movable groove, thereby improving the protection of the hydraulic cylinder 701.

[0035] Embodiment 2: Figure 1-6 As shown, a lifting device for central air conditioning maintenance includes a base 1, a bearing platform 2 movably arranged on the top of the base 1, a guardrail 3 fixedly connected to the top of the bearing platform 2, a protective door 4 hinged to the guardrail 3, and a tool box 5 movably arranged on the top of the bearing platform 2, and also includes a moving mechanism arranged at the bottom of the base 1, a lifting mechanism arranged at the top of the base 1, and an adjusting mechanism arranged at the top of the bearing platform 2;

[0036] The moving mechanism includes a universal wheel 601 fixedly connected to the bottom of the base 1, an electric push rod 602 fixedly connected to the center of the bottom of the base 1, and a support plate 603 fixedly connected to the output end of the electric push rod 602 for supporting the device;

[0037] The adjustment mechanism includes an electric lift 801 fixedly connected to the top of the carrying platform 2 , and a mounting plate 802 fixedly connected to the output end of the electric lift 801 for carrying the tool box 5 .

[0038] The adjustment mechanism also includes a first control member and a second control member disposed on the top of the support platform 2 for controlling the electric lift 801;

[0039] The first control component includes a foot pedal 803 hinged to the support platform 2, a clamp spring 804 arranged on the top of the support platform 2, a mounting rod 805 and a limit rod 807 fixedly connected to the top of the support platform 2, and a touch switch 806 fixedly connected to the top of the mounting rod 805, wherein the mounting rod 805 is located between the limit rod 807 and the clamp spring 804, and the height of the mounting rod 805 is lower than the height of the limit rod 807, wherein the touch switch 806 of the first control component is used to control the extension of the electric lift 801.

[0040] The second control component has the same structure as the first control component, and the second control component and the first control component are symmetrically arranged about the central axis of the electric lift 801 , wherein the touch switch 806 of the second control component is used to control the retraction of the electric lift 801 .

[0041] The adjustment mechanism also includes a storage groove opened on the top of the mounting plate 802, a return spring 808 fixedly connected to the inner wall of the storage groove, a transmission plate 809 fixedly connected to the end face of the return spring 808, and a suction cup 8010 fixedly connected to the top of the transmission plate 809, wherein the suction cup 8010 extends to the outer surface of the storage groove under the action of the return spring 808 and the transmission plate 809.

[0042] The adjustment mechanism also includes a guide sleeve 8011 and a control switch 8013 fixedly connected to the bottom of the transmission plate 809, and a guide rod 8012 fixedly connected to the bottom of the storage groove, wherein the control switch 8013 is located inside the guide sleeve 8011, and the outer diameter of the guide rod 8012 is equal to the inner diameter of the guide sleeve 8011.

[0043] The regulating mechanism also includes an air pump 8014 fixedly connected to the top of the transmission plate 809, an air intake pipe fixedly connected to the air inlet of the air pump 8014, and an electric control valve 8015 fixedly installed on the outer wall of the air intake pipe, wherein the electric control valve 8015 is used to start the air pump 8014 to evacuate air, and close the electric control valve 8015 after a delay period, wherein a switch (not shown in the figure) for controlling the electric control valve 8015 and the air pump 8014 is arranged on the top of the mounting plate 802.

[0044] When a person moves to a designated position, he first adjusts the height of the toolbox 5 according to his own height, that is, by stepping on the foot pedal 803, so that the foot pedal 803 compresses the clamp spring 804 until the bottom of the foot pedal 803 abuts against the top of the limit rod 807, so that the foot pedal 803 abuts against the touch switch 806, and then the touch switch 806 starts the electric lift 801, so as to adjust the height of the mounting plate 802 and the toolbox 5, avoiding the situation that the person needs to bend over to take the tool. The above operation is convenient for the user to adjust the electric lift 801, and the limit rod 807 is set to prevent the person from using too much force and damaging the touch switch 806;

[0045] The tool box 5 is connected to the mounting plate 802 via the suction cup 8010. When the tool box 5 needs to be removed, the electric control valve 8015 is opened and the air pump 8014 is started to blow air into the suction cup 8010, thereby making the air pressure inside and outside the suction cup 8010 equal, so that the tool box 5 can be separated from the suction cup 8010.

[0046] When the toolbox 5 needs to be fixed on the mounting plate 802, the toolbox 5 is placed on the top of the mounting plate 802. At this time, the bottom of the toolbox 5 will cover the opening of the suction cup 8010, and the suction cup 8010 will be completely retracted into the storage groove, so that the suction cup 8010 will fit with the bottom surface of the toolbox 5 under the action of the return spring 808, and the guide rod 8012 will resist the control switch 8013, so that negative pressure will be drawn inside the suction cup 8010, so as to fix the toolbox 5.

Claims

1. A lifting device for central air conditioning maintenance, comprising a base (1), a bearing platform (2) movably arranged on the top of the base (1), a guardrail (3) fixedly connected to the top of the bearing platform (2), a protective door (4) hinged to the guardrail (3), and a tool box (5) movably arranged on the top of the bearing platform (2), characterized in that: It also includes a moving mechanism arranged at the bottom of the base (1), a lifting mechanism arranged at the top of the base (1), and an adjusting mechanism arranged at the top of the supporting platform (2); The moving mechanism comprises a universal wheel (601) fixedly connected to the bottom of the base (1), an electric push rod (602) fixedly connected to the center of the bottom of the base (1), and a support plate (603) fixedly connected to the output end of the electric push rod (602) for supporting the device; The adjustment mechanism comprises an electric lift (801) fixedly connected to the top of the support platform (2), and a mounting plate (802) fixedly connected to the output end of the electric lift (801) for supporting the tool box (5).

2. A lifting device for central air conditioner maintenance according to claim 1, characterized in that: The adjustment mechanism also includes a first control component and a second control component which are arranged on the top of the support platform (2) and are used to control the electric lift (801); The first control component comprises a foot pedal (803) hingedly connected to the support platform (2), a clamping spring (804) arranged on the top of the support platform (2), a mounting rod (805) and a limit rod (807) fixedly connected to the top of the support platform (2), and a touch switch (806) fixedly connected to the top of the mounting rod (805).

3. A lifting device for central air conditioner maintenance according to claim 2, characterized in that: The second control component has the same composition structure as the first control component, and the second control component and the first control component are symmetrically arranged about the central axis of the electric lift (801).

4. A lifting device for central air conditioner maintenance according to claim 3, characterized in that: The adjustment mechanism also includes a receiving groove opened on the top of the mounting plate (802), a return spring (808) fixedly connected to the inner side wall of the receiving groove, a transmission plate (809) fixedly connected to the end surface of the return spring (808), and a suction cup (8010) fixedly connected to the top of the transmission plate (809).

5. A lifting device for central air conditioner maintenance according to claim 4, characterized in that: The adjustment mechanism also includes a guide sleeve (8011) and a control switch (8013) fixedly connected to the bottom of the transmission plate (809), and a guide rod (8012) fixedly connected to the bottom of the storage groove.

6. A lifting device for central air conditioner maintenance according to claim 5, characterized in that: The regulating mechanism also includes an air pump (8014) fixedly connected to the top of the transmission plate (809), an air intake pipe fixedly connected to the air inlet of the air pump (8014), and an electric control valve (8015) fixedly installed on the outer side wall of the air intake pipe.

7. A lifting device for central air conditioner maintenance according to claim 6, characterized in that: The lifting mechanism comprises a movable groove opened on the top of the base (1), and a hydraulic cylinder (701) fixedly connected to the bottom of the movable groove; The bottom of the bearing platform (2) is fixedly connected to the output end of the hydraulic cylinder (701), the bottom of the bearing platform (2) is fixedly connected to a protective sleeve (702), and the bottom of the protective sleeve (702) is fixedly connected to a sealing ring (703).