Elastic limiting device of ventilation slot dust removal trolley

Abstract

The utility model belongs to the technical field of dust removal equipment, and particularly discloses an elastic limiting device of a ventilation slot dust removal trolley. The cart is fixedly connected with the dust removal pipeline, the cart is in sliding connection with the cart track, the dust removal cart is in sliding connection with the cart track, the tail end of the dust removal pipeline is connected with angle steel, the angle steel forms an angle steel frame, and the cart is fixedly connected with a cart ventilation pipe; the trolley ventilation pipe is in sliding connection with the angle steel frame, and the dust removal pipe is fixedly connected with an aluminum foil telescopic hose which is fixedly connected with the trolley ventilation pipe. Rigid connection of the cart and the trolley is changed into flexible connection of the aluminum foil telescopic hose, so that displacement is allowed between the cart and the trolley, radial displacement between the cart and the trolley relative to the trolley ventilation pipe is limited by the angle steel frame, and buffering is carried out through a telescopic gap of the aluminum foil telescopic hose and a dust removal pipeline. And the trolley can normally run on the deformed track.

Description

Technical Field

[0001] This utility model relates to the field of dust removal equipment technology, specifically to an elastic limiting device for a ventilation duct dust removal trolley. Background Technology

[0002] Inside the material transport trolley workshop of the steel plant's ironmaking plant, high-load production and equipment vibration have caused severe deformation of the overhead ventilation duct trolley tracks, resulting in excessively long repair times and high maintenance costs. Prolonged repairs not only disrupt daily production but also lead to a significant decrease in production efficiency. The difficulty of repair and the inability to carry out large-scale modifications or replacements during maintenance periods cause the ventilation duct trolleys to frequently derail during current use. This compromises both normal production safety and the effectiveness of dust removal during unloading, resulting in a poor working environment for employees.

[0003] Publication No. CN209988603U discloses a novel mobile trolley for ventilation ducts, which is slidably mounted on a ventilation duct guide rail. The trolley includes a trolley body, an air duct sleeve mounted on the outer side wall of the trolley body, a movable bend inside the air duct sleeve, and a buffer gap between the movable bend and the air duct sleeve. One end of the movable bend is connected to the exhaust pipe of a mobile conveyor belt, and the other end is connected to the ventilation duct via a buffer hose. A spring-loaded clamping device is also provided inside the trolley body to press the movable bend. An adjusting roller connected to the conveyor belt is also provided on the trolley body. This invention, by using a buffer hose, a spring-loaded clamping device, and a buffer gap between the movable bend and the air duct sleeve, can effectively buffer the impact between the mobile conveyor belt and the mobile trolley, thereby ensuring the stable operation of the mobile trolley, reducing the installation and debugging process, and making the equipment more convenient to use and operate.

[0004] The above solution cannot operate normally after the track is deformed, and the long-term maintenance of the track will affect daily production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an elastic limiting device for a ventilation duct dust removal trolley to solve the problem that the unloading trolley cannot operate normally and the maintenance time is long after the track is deformed.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: an elastic limiting device for a dust removal trolley in a ventilation duct, comprising a trolley, a large trolley, a trolley track, a large trolley track, and a dust removal pipe. The large trolley is fixedly connected to the dust removal pipe, and the large trolley is slidably connected to the large trolley track. The dust removal trolley is slidably connected to the trolley track. An angle steel is connected to the end of the dust removal pipe, and several angle steels form an angle steel frame. A trolley ventilation pipe is fixedly connected to the trolley, and the trolley ventilation pipe is slidably connected to the angle steel frame. An aluminum foil telescopic flexible hose is fixedly connected to the dust removal pipe, and the aluminum foil telescopic flexible hose is fixedly connected to the trolley ventilation pipe.

[0007] The principle and beneficial effects of this utility model are as follows: the large trolley runs along the large trolley track, pulling the small trolley to move synchronously and remove dust. The rigid connection between the large trolley and the small trolley is changed to a flexible connection of aluminum foil telescopic hose, which allows displacement between the large trolley and the small trolley. The radial displacement between the large trolley and the small trolley relative to the ventilation pipe of the small trolley is restricted by the angle steel frame. When the track deforms and the small trolley track is not parallel to the large trolley track, it can be buffered and adjusted by the expansion gap of the aluminum foil telescopic hose and the dust removal pipe. The small trolley can run normally on the track and will not detach from the large trolley.

[0008] Option 2, a preferred embodiment of the basic option, involves a supporting steel plate fitted to the end of the dust removal duct. The angle steel is hinged to the outer wall of the dust removal duct, and a hydraulic damper is fixedly connected between the angle steel and the supporting steel plate. The combination of the angle steel and the hydraulic damper ensures non-rigid contact between the angle steel and the trolley's ventilation duct. The deformation gap of the angle steel can buffer the offset caused by track deformation, while the hydraulic damper effectively absorbs vibration, reduces equipment wear, and extends service life.

[0009] Option 3, a preferred option of the basic scheme, has a first limiting plate welded to the end of the angle steel. The first limiting plate is slidably connected to the outside of the trolley ventilation pipe. The limiting plate is engaged with the flange of the trolley ventilation pipe, restricting its radial displacement and ensuring stable operation of the trolley while preventing the ventilation pipe from detaching from the dust removal pipe.

[0010] Option 4, a preferred option of the basic scheme, involves covering the aluminum foil flexible hose with a dust collector bag. Sealing rubber rings are installed at the connection flanges between the aluminum foil flexible hose and the dust collection pipe and the trolley ventilation pipe. The two ends of the dust collector bag are pressed between the sealing rubber rings and the connection flanges. The dust collector bag effectively prevents dust leakage, improving the dust collection effect, while the sealing rubber rings ensure airtightness at the connection points, preventing air leakage.

[0011] Option 5, a preferred option of the basic scheme, involves the trolley being fixedly equipped with casters. These casters have grooves that engage with both sides of the trolley's track. This provides the trolley with a degree of steering capability, accommodates minor track deformations, and ensures smooth operation. The caster design also increases flexibility and reduces the risk of jamming.

[0012] Option six, a preferred embodiment of option five, involves welding a second limiting plate onto the bracket of the omnidirectional wheel. The limiting plate restricts the steering angle of the omnidirectional wheel, preventing excessive steering and derailment, while simultaneously ensuring the stability and guidance of the trolley on the track. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an elastic limiting device for a ventilation duct dust removal trolley according to the present invention;

[0014] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0015] Figure 3 This is a front view of an elastic limiting device for a ventilation duct dust removal trolley according to this utility model. Detailed Implementation

[0016] The present invention will be further described in detail below through specific embodiments:

[0017] The reference numerals in the accompanying drawings include: 1-trolley, 2-large trolley, 3-trolley track, 4-large trolley track, 5-dust removal pipe, 6-angle steel, 7-trolley ventilation pipe, 8-aluminum foil telescopic hose, 9-supporting steel plate, 10-hydraulic damper, 11-first limit plate, 12-swivel wheel, 13-wheel groove, 14-second limit plate.

[0018] Example

[0019] like Figures 1 to 3 As shown: A flexible limiting device for a dust removal trolley in a ventilation duct includes a trolley 1, a large trolley 2, a trolley track 3, a large trolley track 4, and a dust removal pipe 5. The large trolley 2 is fixedly connected to the dust removal pipe 5 and slidably connected to the large trolley track 4. The trolley 1 is fixedly equipped with casters 12, each caster 12 having a groove 13 that engages with both sides of the trolley track 3. A second limiting plate 14 is welded to the bracket of the casters 12. An angle steel 6 is connected to the end of the dust removal pipe 5, and several angle steels 6 form an angle steel frame. A trolley ventilation pipe 7 is fixedly connected to the trolley 1. A first limiting plate 11 is welded to the end of the angle steel 6. The first limiting plate 11 is slidably connected to the outside of the trolley ventilation pipe 7. An aluminum foil telescopic hose 8 is fixedly connected to the dust removal pipe 5. The aluminum foil telescopic hose 8 is fixedly connected to the trolley ventilation pipe 7. The aluminum foil telescopic hose 8 is covered with a dust removal bag. Sealing rubber rings are provided at the connecting flanges of the aluminum foil telescopic hose 8, the dust removal pipe 5, and the trolley ventilation pipe 7. The two ends of the dust removal bag are pressed between the sealing rubber ring and the connecting flange.

[0020] The implementation method of this embodiment is as follows: When the trolley 2 actively travels and unloads materials, the trolley 1 is moved synchronously and dusted by the traction of the angle steel 6 frame. When it runs to the deformed trolley track 3, a relative displacement occurs between the trolley 2 and the trolley 1. The aluminum foil telescopic hose 8 extends or retracts, and the trolley ventilation pipe 7 slides in the first limiting plate 11. The relative displacement between the trolley 2 and the trolley 1 is restricted by the angle steel 6 frame. The hydraulic damper 10 absorbs the vibration and provides support force to the angle steel 6, so that the trolley 1 can run normally on the deformed track and will not detach from the trolley 2.

[0021] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An elastic limiting device for a ventilation duct dust removal trolley, characterized in that, The system includes a dust removal trolley (1), a large trolley (2), a trolley track (3), a large trolley track (4), and a dust removal pipe (5). The large trolley (2) is fixedly connected to the dust removal pipe (5), and the large trolley (2) is slidably connected to the large trolley track (4). The dust removal trolley (1) is slidably connected to the trolley track (3). An angle steel (6) is connected to the end of the dust removal pipe (5). Several angle steels (6) form an angle steel frame. A trolley ventilation pipe (7) is fixedly connected to the trolley (1). The trolley ventilation pipe (7) is slidably connected to the angle steel frame. An aluminum foil telescopic flexible hose (8) is fixedly connected to the dust removal pipe (5). The aluminum foil telescopic flexible hose (8) is fixedly connected to the trolley ventilation pipe (7).

2. The elastic limiting device for a ventilation duct dust removal trolley according to claim 1, characterized in that... The dust removal pipe (5) is fitted with a supporting steel plate (9) at the end. The angle steel (6) is hinged to the outer wall of the dust removal pipe (5). A hydraulic damper (10) is fixedly connected between the angle steel (6) and the supporting steel plate (9).

3. The elastic limiting device for a ventilation duct dust removal trolley according to claim 1, characterized in that, The angle steel (6) is welded to a first limiting plate (11) at its end, and the first limiting plate (11) is slidably connected to the outside of the trolley ventilation pipe (7).

4. The elastic limiting device for a ventilation duct dust removal trolley according to claim 1, characterized in that, The aluminum foil telescopic hose (8) is covered with a dust removal bag. The aluminum foil telescopic hose (8) is provided with sealing rubber rings at the connection flanges of the dust removal pipe (5) and the trolley ventilation pipe (7). The two ends of the dust removal bag are pressed between the sealing rubber rings and the connection flanges.

5. The elastic limiting device for a ventilation duct dust removal trolley according to claim 1, characterized in that... The trolley (1) is fixedly equipped with casters (12), and the casters (12) have grooves (13) which are engaged on both sides of the trolley track (3).

6. The elastic limiting device for a ventilation duct dust removal trolley according to claim 5, characterized in that... The universal wheel (12) is welded with a second limiting plate (14) on both sides.

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