Balanced pressing sanitation vehicle fan butt joint port device and sanitation vehicle

Abstract

The utility model discloses a sanitation truck fan butt joint device and sanitation truck with balanced compression, which comprises a corrugated pipe, the front end of the corrugated pipe is connected with an adapter flange used for connecting a box body, the rear end of the corrugated pipe is communicated with a fan air outlet, one end of the adapter flange close to the corrugated pipe is provided with a plurality of cardan shafts, and the cardan shafts are connected with the corrugated pipe. The multiple cardan shafts are evenly distributed with the axis of the corrugated pipe as the center, the other end of each cardan shaft is rotationally connected with a rack, the racks are connected with the fan shell in a sliding mode, and the two racks located on the same plane are jointly meshed with a gear in a transmission mode. According to the device, passive elastic filling sealing of the sealing ring is changed into active balance sealing, the same force can be still applied to the four corners under the condition that the four corners are inclined in the direction, and it is guaranteed that press-fit sealing can be achieved under any inclined condition.

Description

Technical Field

[0001] The utility model relates to the field of sanitation vehicles, in particular to a balanced and compacted sanitation vehicle fan docking interface device and a sanitation vehicle. Background Art

[0002] With the need of urban environmental governance, more and more sanitation vehicles are put into sanitation operations. Whether it is a road maintenance vehicle or a washing and sweeping vehicle, the centrifugal fan is indispensable as a core device. The compression seal between the centrifugal fan outlet and the box body is the key to affecting the vehicle's suction and pickup effect. The current common method is to set a sealing ring between the centrifugal fan outlet and the box body. The sealing ring is made of elastic rubber material. Since the sanitation vehicle is a mobile equipment, the box body will inevitably vibrate or slightly displace. In order to enable the sealing ring to overcome the deformation caused by wind force and box body movement, hard rubber is generally used. This results in the deformation of the sealing ring itself cannot completely fill the gap between the fan outlet and the box body, resulting in air leakage, water leakage and other problems. As the vehicle's service life increases, the matching gap will become larger and larger. At the same time, the sealing ring loses its elasticity due to aging and cannot achieve the sealing effect, further leading to the expansion of air leakage, water leakage and other problems. Therefore, it is particularly important to design a balanced and compact sanitation vehicle fan interface device. Utility Model Content

[0003] In order to solve the above problems, the utility model discloses a balanced compression sanitation vehicle fan interface device and a sanitation vehicle. The device changes the passive elastic filling seal of the sealing ring into an active balanced seal. When the four corners are tilted, the same force can still be applied to the four corners to ensure that the seal can be pressed in any skewed condition.

[0004] The utility model adopts the following technical solutions.

[0005] A balanced and compacted fan docking device for a sanitation vehicle comprises a bellows, the front end of the bellows being connected to a transfer flange for connecting to a box body, the rear end of the bellows being communicated with an air outlet of the fan, a plurality of universal shafts being installed at one end of the transfer flange close to the bellows, the plurality of universal shafts being evenly distributed with the axis of the bellows as the center, the other end of each universal shaft being rotatably connected to a rack, the rack being slidably connected to a fan casing, and the two racks located in the same plane meshingly transmit a gear together.

[0006] Preferably, the gear is rotatably connected to the fan casing.

[0007] Preferably, the cardan shaft and the rack are each four pieces, and the gear is two pieces, and the two gears are respectively mounted on two opposite side surfaces of the fan casing.

[0008] Preferably, a sealing strip is embedded at one end of the adapter flange close to the box body.

[0009] Preferably, the fan housing is provided with a slide groove, and the rack is slidably installed in the slide groove.

[0010] Preferably, two racks located in the same plane are symmetrically arranged on both sides of the gear.

[0011] Preferably, among the plurality of universal shafts, two universal shafts which are symmetrical with each other about the axis of the adapter flange are fixedly connected to the corresponding racks, and the remaining universal shafts are hinged to the corresponding racks.

[0012] The utility model also discloses a sanitation vehicle, which comprises a fan and a box body, wherein the above-mentioned docking interface device is arranged between the fan and the box body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model connects the air outlet of the fan and the box body through a bellows, and a connecting mechanism is symmetrically arranged on the outside of the bellows. When the air outlet of the box body is skewed, the adapter flange will also be skewed to ensure that it is parallel to the air outlet of the box body, so that the sealing effect can be guaranteed. Therefore, when one of the corners of the adapter flange telescopes and moves along the direction of the rack, it will be transmitted to the rack on the opposite side through the middle gear, causing it to move in the opposite direction, and under the action of the gear, the two racks apply the same force, thereby completing the effect of evenly applying pressure in the inclined state, thereby evenly pressing on the box body to make it sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This utility model structure Figure 1 ;

[0017] Figure 2 This utility model structure Figure 2 ;

[0018] In the figure, 1. fan casing, 2. slide groove, 3. rack, 4. gear, 5. bellows, 6. universal shaft, 7. adapter flange, 8. sealing strip. DETAILED DESCRIPTION

[0019] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] The utility model discloses a Figure 1-2 The balanced compression sanitation vehicle fan docking device shown in the figure has a bellows 5 installed between the fan outlet and the housing to provide a flexible connection between the fan and the housing. The front end of the bellows is connected to the adapter flange 7, and the other end of the adapter flange is docked with the housing through a sealing strip 8. A universal shaft 6 is installed at each of the four corner points of the adapter flange 7 close to the bellows. The other end of each universal shaft is rotatably connected to a rack 3. A gear 4 is rotatably installed on each of the two opposite sides of the fan housing 1. The gear can rotate along the axis. A slide 2 is installed on the upper and lower sides of each gear, and the rack 3 is slidably installed in the slide. The two racks are distributed parallel to each other on both sides of the gear and mesh with the gear for transmission. When the air outlet of the box is skewed due to vibration or aging of the sealing strip, the adapter flange will also be skewed, and then the bellows will be driven to skew through the universal shaft to ensure that it is parallel to the air outlet of the box, so as to ensure the sealing effect. Therefore, when one of the corners telescopes and moves along the direction of the rack, it will be transmitted to the rack on the opposite side through the middle gear, causing it to move in the opposite direction, and under the action of the gear, the two racks exert the same force, thereby completing the effect of evenly applying pressure in the tilted state, thereby evenly pressing on the box to make it sealed.

[0021] The utility model also discloses a sanitation vehicle, which comprises a fan and a box body, and the above-mentioned docking interface device is arranged between the fan and the box body.

[0022] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A balanced compression sanitation vehicle fan docking device, characterized in that: It comprises a bellows (5), the front end of which is connected to a transfer flange (7) for connecting to a box body, the rear end of which is in communication with an air outlet of a fan, a plurality of universal shafts (6) being mounted on one end of the transfer flange close to the bellows, the plurality of universal shafts being evenly distributed around the axis of the bellows, the other end of each universal shaft being connected to a rack (3), the rack being slidably connected to a fan housing (1), and two racks located in the same plane meshing together to transmit a gear (4).

2. A balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: The gear (4) is rotationally connected to the fan casing (1).

3. The balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: The universal shaft (6) and the rack (3) are each four pieces, and the gear (4) is two pieces, and the two gears are respectively mounted on two opposite side surfaces of the fan housing (1).

4. The balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: A sealing strip (8) is embedded in one end of the adapter flange (7) close to the box body.

5. The balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: The fan housing is provided with a slide groove (2), and the rack (3) is slidably mounted in the slide groove.

6. The balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: Two racks (3) located in the same plane are symmetrically arranged on both sides of the same gear (4).

7. The balanced compression sanitation vehicle fan docking device according to claim 1, characterized in that: Among the plurality of universal shafts (6), two of the universal shafts that are symmetrical with respect to the axis of the adapter flange (7) are fixedly connected to the corresponding racks (3), and the remaining universal shafts are hingedly connected to the corresponding racks.

8. A sanitation vehicle, comprising a fan and a box, characterized in that: A balanced compression sanitation vehicle fan interface device as described in any one of claims 1 to 6 is arranged between the fan and the box body.

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