CN204251275U - For the mobile lifting tables of centrifugal blower - Google Patents

Abstract

The purpose of this utility model is to provide a movable lifting platform for centrifugal fans, including a car body and a worm wheel screw lifter. The car body includes a top layer and a bottom layer connected up and down, and a support frame for installing a centrifugal fan is fixed on the top layer , one of the opposite surfaces of the bottom layer is fixed with a lift mounting bracket, and at the two ends of each lift mounting bracket, worm gear screw lifts are respectively installed through the corresponding lift mounting blocks, on the two lift mounting brackets Holes for the lifting and lowering of the leading screws of the four worm gear screw lifters are respectively arranged, and a circular support pad is arranged at the bottom of the leading screw of each worm gear screw lifter. The utility model increases the working stability of the centrifugal fan. When the centrifugal fan works in an unequal working environment on the ground and at the same time requires the operating equipment to have a certain level, the four-corner lifting design can provide a larger adjustment range, which is convenient for the operation. Adjustment of platform levelness.

Description

Movable lifting table for centrifugal fans

technical field

The utility model relates to an experimental auxiliary device, specifically a lifting device.

Background technique

Under laboratory conditions, small centrifugal fans are often used as power sources for wind tunnel systems. In order to realize a centrifugal fan that can be connected to multiple experimental sections or a series-parallel arrangement of multiple small fans, it is often necessary to move the fan equipment and adjust the fan The height of the center is adjusted, therefore, a lifting device that can solve the problem of fan movement under laboratory conditions is required.

Present movable lifting platforms are generally provided with a lifting function by a leading screw or a hydraulic device, and wheels are installed at its bottom to facilitate movement. However, when it is necessary to install equipment with high stability requirements such as fans on the lifting platform, the traditional type of lifting platform generally cannot meet such requirements; in addition, when the working environment of the lifting platform is harsh, for example, when the ground is not level , a single screw lifting platform or a linkage multi-screw lifting platform cannot meet the requirements of the equipment for the level of work.

The patent with the publication number CN 202296985 U uses the hand wheel to drive the screw lifting device to realize the lifting function. Four guide rail wheels are installed on both sides of the car body for the lift car to move on the guide rail. There are two functions of moving and lifting the equipment. However, in the actual use process, due to the linkage of the screw, it can only realize the overall rise and fall, and cannot adjust the level of the working platform; in addition, due to the guide rail design, its moving range is relatively limited, and it can only move according to the preset line . The patent with publication number CN201240803Y contains a lifting mechanism, a lifting drive assembly, a vehicle frame and wheels, and its working principle is basically the same as that of the aforementioned patent. Like the aforementioned patent, the load-bearing support of the entire platform is mainly borne by four wheels. When the lifting platform works in a strong vibration environment, the platform is likely to slip.

Contents of the invention

The purpose of this utility model is to provide a movable lifting platform for a centrifugal fan that can meet the requirements of high stability and level adjustment while providing the movement of the fan and the horizontal lifting function of the center of the fan under laboratory conditions.

The purpose of this utility model is achieved in that:

The utility model is a movable lifting platform for centrifugal fan, which is characterized in that it includes a car body and a worm wheel screw lifter, the car body includes a top layer and a bottom layer connected up and down, and a support frame for installing a centrifugal fan is fixed on the top layer , one of the opposite surfaces of the bottom layer is fixed with a lift mounting bracket, and at the two ends of each lift mounting bracket, worm gear screw lifts are respectively installed through the corresponding lift mounting blocks, on the two lift mounting brackets The holes for the screw lifting of the four worm gear screw lifts are set respectively, and the bottom of the screw of each worm screw screw lift is equipped with a circular support foot pad, four mobile casters are installed under the bottom layer of the car body, and handrails are installed on the top layer of the car body .

The advantage of the utility model is that: when the platform of the utility model is raised, the vehicle body including the movable casters will be jacked up, and the casters are separated from the ground, and the whole platform is supported by a lifting device with a supporting base, which increases the work of the centrifugal fan stability. At the same time, four lifting devices are distributed at the four corners of the platform, each of which can work independently, which facilitates the adjustment of the level of the platform. In particular, when the centrifugal fan works in an uneven working environment on the ground and requires a certain levelness of the operating equipment, the design of the four-corner lift can provide a larger adjustment range and facilitate the adjustment of the levelness of the platform.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a bottom view of the utility model.

Detailed ways

The utility model is described in more detail below in conjunction with accompanying drawing example:

In conjunction with Fig. 1～2, the utility model is made up of car body 1, elevator 2, elevator mounting block 3. The car body 1 is fixedly connected by square aluminum and is divided into two layers. The top floor is equipped with installation support frame 8, handrail 4, and support frame 8 and bolt hole 5 are used for installing and fixing operation equipment. There is an elevator installation bracket 7 on the upper side of the bottom layer, and the elevator installation block 3 is fixed on the installation frame 7 by welding. There are bolt holes 9 on the elevator installation block 3. The position and size correspond to the installation holes at the bottom of the elevator 2. The elevator 2 is connected by bolts. The way is fixed on the elevator installation block 3. The central part of the elevator mounting block 3 has a round hole for the lifting lead screw 11 of the elevator 2 to pass through, and the bottom of the leading screw 11 has a circular support foot pad 10 to provide support during work. Mobile casters 6 are installed on the bottom side of the vehicle frame, and the casters 6 are fixed by bolts.

During use, the centrifugal fan is fixedly installed on the mounting frame 8 on the top floor of the vehicle frame earlier. Mobile casters 6 are installed at the bottom of the vehicle, and the platform can be moved to a suitable position by pushing the handrail 4 by manpower. Drive the worm gear elevator 2 through the hand wheel, and when the lead screw 11 extends downward to a certain length, the platform will be jacked up, and the casters 6 will be suspended in the air. Adjust the extension lengths of the four elevators 2 respectively, and the platform can be adjusted to a suitable height and a suitable height. levelness. After the height and level are adjusted, the centrifugal fan on the platform can work normally. After the work is finished, the lead screw 11 is retracted to the inside of the car body 1 through the hand wheel of the worm gear lifter, and the weight of the car body is borne by the mobile casters 6 again, so that it can be moved conveniently, so that the combination of centrifugal fans in series and parallel can be realized. Meet different experimental needs.

The movable lifting platform of the centrifugal fan of the utility model is composed of a car body 1, mobile casters 6, a worm wheel lifter 2, and a lifter installation block 3; the car body 1 is divided into two layers, which are fixedly connected by square aluminum, and the top layer is used for installing centrifugal The fan equipment is provided with an installation support frame 1 and a fixing hole 5; the upper side of the bottom layer is used to install the screw lifter 2, the lifting device is fixedly connected to the installation block 3, and the installation block 3 is fixedly connected to the installation bracket 7 on the upper side of the bottom layer, Four mobile casters 6 are installed on the lower side of the bottom floor; the lifting device can be used to provide a larger lifting stroke. Stretch out, the car body 1 is jacked up, and the bottom of the extension part of the lifting device is equipped with a supporting foot pad 10, which is used to improve the working stability of the platform when it is raised; four lifting devices are housed on the bottom mounting frame, and the lifting device Each works independently, and the lifting stroke can be adjusted independently to ensure the levelness of the lifting platform, especially suitable for working environments such as uneven ground.

This lifting device can be worm gear lifter 2, and worm gear screw lifter 2 is made up of worm gear reducer and lifting screw mandrel, and its decelerating part is a worm drive, utilizes worm screw to drive worm gear to realize deceleration. The center of the worm wheel is an internal thread structure, which is equivalent to the nut of the lifting screw mandrel, and matches with the lifting screw mandrel 11. During use, the worm is driven by the hand wheel or the motor, and then the leading screw 11 is driven to lift.

The utility model centrifugal fan movable lifting platform is composed of a main car body 1, a worm wheel screw lifter 2, a lifter installation block 3, a handrail 4, a mounting hole 5, and a movable caster 6. The lifter 2 and the car body 1 are fixedly connected. , it is characterized in that: the lifter 2 is installed at the bottom of the car body 1, when the lifter needs to move, the lifter 2 is put away, at this time the lifter is supported by the movable casters 6, which is easy to move, when the lifter needs to be raised, The telescopic part 11 of the elevator 2 stretches out. At this time, the elevator platform is supported by the elevator 2, which provides lifting function and stable support for the entire elevator platform. The elevator 2 belongs to the worm gear screw elevator, and its working principle is to drive the up and down movement of the lead screw through the rotation of the worm wheel to realize the lifting function.

The car body 1 is divided into two layers, which are fixedly connected by square aluminum. The top layer is used to install a small centrifugal fan device, and is provided with an installation support frame 8 and a fixing hole 5; Fixedly connected to the installation block 3 through the bolt hole 9, the installation block 3 is fixedly connected to the installation bracket 7 on the upper side of the bottom layer, and four mobile casters 6 are installed on the bottom side of the bottom layer; the elevator 2 can be used to provide a larger lifting stroke , when the lead screw extension 11 is retracted, the whole platform is supported by the casters 6, and the position can be moved freely. A support pad 10 is installed at the bottom of the outlet 11 to improve the working stability of the platform when it is raised; four elevators are installed on the bottom mounting frame 7, and the elevators 2 work independently, and the lifting strokes can be adjusted separately to ensure The levelness of the lifting platform is especially suitable for harsh working environments such as uneven ground.

Claims (1)

1. for the mobile lifting tables of centrifugal blower, it is characterized in that: comprise car body, worm wheel screw rod lifting machine, described car body comprises the top layer and bottom that are connected up and down, top layer is fixed with the bracing frame for installing centrifugal blower, a subtend face of bottom is all fixed with elevator mounting bracket, two ends before and after each elevator mounting bracket, worm wheel screw rod lifting machine is separately installed with by each self-corresponding elevator mounting blocks, two elevator mounting brackets are arranged respectively the hole that the leading screw for four worm wheel screw rod lifting machines is elevated, circular support foot pad is all established bottom the leading screw of each worm wheel screw rod lifting machine, below car body bottom, four Moving casters are installed, car body top layer installs handrail.