Powder and granular material transport vehicle cover and powder and granular material transport vehicle

Abstract

The present invention provides a material cover for a powder and granular material transport vehicle, which can solve the problem that the material cover of existing powder and granular material transport vehicles requires operators to climb onto the roof to open and close the cover, which is prone to safety accidents. The cover includes a loading cover, a discharge opening ring, a translation drive mechanism, an expansion medium charging and discharging unit, and a controller. The discharge opening ring is installed on the feed hole of the tank body of the powder and granular material transport vehicle; the translation drive mechanism is installed on the tank body and connected to the loading cover, and is used to drive the loading cover to translate to and away from the discharge opening ring; a sealing ring is installed on the bottom surface of the loading cover, and the expansion medium charging and discharging unit can charge and discharge expansion medium into the sealing ring to expand or contract the sealing ring. After expansion, the sealing ring can seal with the discharge opening ring; the translation drive mechanism and the expansion medium charging and discharging unit are respectively electrically connected to the controller. At the same time, the present invention also provides a powder and granular material transport vehicle.

Description

Technical Field

[0001] The present invention relates to the field of powder and granular material transportation equipment, in particular to a powder and granular material transportation vehicle cover and a powder and granular material transportation vehicle. Background Art

[0002] Powder and granular material transport vehicles consist of a dedicated chassis, tank, air piping system, and automatic unloading device. They are suitable for bulk transport of dry powders with particle diameters of 0.1mm or less, such as fly ash, cement, lime powder, ore powder, and granular alkali. Currently, there are approximately 100,000 powder and granular material transport vehicles in the market, with 20,000 to 30,000 vehicles replaced annually. Approximately 150,000 people work in this industry.

[0003] The cover of a powder and granular material transporter is located on top of the vehicle, approximately 4 meters above the ground. Opening and closing the cover is typically the responsibility of the driver. Existing covers on most powder and granular material transporters require the driver to climb up to the vehicle's roof using a built-in ladder (welded to the side of the tank) to open and close the cover. This is a common practice before loading, requiring the driver to climb up to the roof to open the cover; after the load is complete, the driver must climb back up to close the cover.

[0004] A common material cover structure is disclosed in Patent No. ZL201620629602.8, which discloses a four-claw material cover for bulk cement trucks. The cover consists of a cover plate 2, an adjustment wrench 4, and a safety mechanism 10. The hook 12 of the safety mechanism 10 is usually equipped with a return spring. This material cover has the following disadvantages:

[0005] 1) The opening and closing of the material cover requires going up to the roof via an escalator. Especially in rainy days, or rainy days with low temperatures, the escalator and the roof are covered with rain or ice, causing the operator's feet to slip, posing a serious safety hazard. This is especially true for older operators, who are more prone to safety accidents.

[0006] 2) The safety mechanism of the material cover may fail to return to its original position during actual operation, or the operator may mistakenly step on it and the safety mechanism is in the open state. At this time, if the air pressure in the tank has not been evacuated and high-pressure gas exists, the operator may mistakenly open the material cover and the cover will suddenly flip open under the impact of the high-pressure gas. The cover will strongly impact the operator's head, which will cause serious injury or death. Even if the operator is lucky enough to avoid the direct impact, there is a risk of falling from the top of the vehicle to the ground, causing serious injury. In particular, the joining of new drivers, lack of familiarity with the material cover opening process, lack of awareness of the dangers, and a mentality of taking chances are all causes of accidents. Many safety accidents involving material cover injuries occur every year. Summary of the Invention

[0007] In order to solve the technical problem that the material cover of the existing powder and particle material transport vehicle requires the operator to climb onto the roof to open and close the material cover, which is prone to safety accidents, the present invention provides a material cover for a powder and particle material transport vehicle, which can automatically open and close the material cover without the operator having to climb onto the roof, thereby improving operational convenience, reducing labor intensity, and improving operational safety, thereby achieving the goal of safe and efficient production. At the same time, the present invention also provides a powder and particle material transport vehicle.

[0008] The technical solution is as follows:

[0009] A material cover for a powder and particle material transport vehicle, characterized in that: it includes a loading cover, a discharge opening ring, a translation drive mechanism, an expansion medium charging and discharging unit and a controller, the discharge opening ring being installed on the feed hole of the tank body of the powder and particle material transport vehicle; the translation drive mechanism is installed on the tank body and connected to the loading cover, and is used to drive the loading cover to translate to above the discharge opening ring and move away from above the discharge opening ring; a sealing ring is installed on the bottom surface of the loading cover, and the expansion medium charging and discharging unit can charge and discharge expansion medium into the sealing ring to make the sealing ring expand or contract, and the sealing ring can seal with the discharge opening ring after expansion; the translation drive mechanism and the expansion medium charging and discharging unit are respectively electrically connected to the controller.

[0010] It is further characterized by:

[0011] The feeding cover includes a feeding opening ring and a cover plate, the cover plate is welded on the top surface of the feeding opening ring, an annular groove is opened on the bottom surface of the feeding opening ring along its circumference, and the sealing ring is embedded in the annular groove.

[0012] The translation drive mechanism includes a drive device and a slide rail, the slide rail is arranged on the front and rear sides of the discharge opening ring along the left and right directions and is installed on the tank body, and the loading cover is slidably connected to the slide rail; the drive device is installed on the tank body and connected to the loading cover, and is used to drive the loading cover to translate left and right. When the loading cover translates to the right to just above the discharge opening ring, it triggers the limit switch on the slide rail, and the drive device and the limit switch are electrically connected to the controller respectively.

[0013] Two pressure plates are fixedly installed on the top surface of the loading cover, and the length direction of the pressure plates is perpendicular to the slide rail. Both ends of the pressure plates extend above the slide rail and are slidably connected to the slide rail. A loading cover limit assembly is respectively provided on the outer side of both ends of the pressure plates. The loading cover limit assembly is installed on the tank body to prevent the loading cover from moving upward after the sealing ring expands.

[0014] The loading cover limit assembly includes a mounting seat and an adjusting bolt. The lower end of the mounting seat is fixed to the tank body. The upper end of the mounting seat has a horizontal extension plate. The horizontal extension plate extends above the pressure plate. The adjusting bolt passes through the horizontal extension plate and is locked by a nut. The adjusting bolt is used to press the pressure plate after the sealing ring expands, thereby preventing the loading cover from moving upward.

[0015] The driving device is a cylinder, the cylinder body of the cylinder is hinged to the cylinder fixing bracket fixed on the tank body, the loading cover is fixedly installed with a cylinder connecting seat, the piston rod of the cylinder is hinged to the cylinder connecting seat, and a cylinder solenoid valve is installed on the air pipe of the cylinder, and the cylinder solenoid valve is electrically connected to the controller.

[0016] The sealing ring is a high-pressure sealing ring, and the expansion medium charging and discharging unit includes a sealing ring solenoid valve. The sealing ring solenoid valve is installed on the pipe gas path of the sealing ring and is electrically connected to the controller.

[0017] It also includes an elastic scraper, which is arranged on the right side of the loading cover and its plate surface is arranged vertically. The length direction of the elastic scraper is perpendicular to the translation direction of the loading cover. The upper end of the elastic scraper is fixedly installed on the loading cover, and the lower edge is lower than the upper end surface of the discharge opening ring. During the process of the loading cover being translated to the top of the discharge opening ring or moving away from the top of the discharge opening ring, the elastic scraper can scrape the upper end surface of the discharge opening ring.

[0018] It also includes a material cover opening switch and a material cover closing switch, and the material cover opening switch and the material cover closing switch are electrically connected to the controller respectively.

[0019] A powder and granular material transport vehicle is characterized in that the above-mentioned material cover is installed on the tank body of the transport vehicle.

[0020] The beneficial effects of the present invention are:

[0021] The material cover of the powder and granular material transport vehicle and the powder and granular material transport vehicle of the present invention are connected to the translation drive mechanism, so that under the drive of the translation drive mechanism, the material cover can automatically translate to the top of the discharge opening ring and move away from the top of the discharge opening ring, thereby automatically opening and closing the feeding hole on the tank body. A sealing ring is also installed on the bottom surface of the material cover, and the expansion medium charging and discharging unit can charge and discharge the expansion medium into the sealing ring to automatically expand or contract the sealing ring. When the sealing ring expands, it can be sealed with the discharge opening ring to achieve sealing between the material cover and the discharge opening ring. After the sealing ring contracts, the seal is released, and the material cover can be driven to move away from the top of the discharge opening ring, so that the material cover of the present invention can be achieved. Automatic opening, closing and sealing, the operator can realize automatic control of the material cover through the controller, and there is no need to climb onto the roof to open and close the material cover. The operator can stay away from the material cover when opening the material cover, the operation is convenient, the labor intensity is greatly reduced, the operation safety is greatly improved, the accident rate is effectively reduced, and the purpose of safe and efficient production is achieved; the material cover of the powder and particle material transport vehicle and the powder and particle material transport vehicle of the present invention have the advantages of compact structure, small number of parts, reasonable position arrangement, easy production and manufacturing, good reliability in later use, full automation, no need for human intervention, not easy to damage, etc., which meet the requirements of safe opening and sealing of the material cover of the powder and particle material transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A top view of the material cover of the present invention;

[0023] Figure 2 For the Figure 1 Cross-sectional view along line AA;

[0024] Figure 3 for Figure 2 Enlarged view of area B in the middle;

[0025] Figure 4 It is a schematic diagram of the overall structure of the material cover of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of area C in the middle;

[0027] Figure 6 It is the control principle diagram of the material cover of the present invention.

[0028] Figure markings: 1-feeding cover; 2-discharge mouth ring; 3-cylinder; 4-tank body; 5-feeding hole; 6-slide rail; 7-travel switch; 8-sealing ring; 9-cylinder retraction pipe air path; 10-cylinder extension pipe air path; 11-cylinder solenoid valve; 12-seal ring pipe air path; 13-seal ring solenoid valve; 14-feeding mouth ring; 15-cover plate; 16-annular groove; 17-pressure plate; 18-cylinder fixing bracket; 19-cylinder connecting seat; 20-slide rail fixing column; 21-mounting seat; 22-adjusting bolt; 23-horizontal extension plate; 24-elastic scraper; 25-scraper connecting bolt; 26-scraper connecting angle steel; 27-assembly connecting bolt; 28-assembly connecting angle steel; 29-nut. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See Figures 1 to 6 The present invention provides a material cover for a powder and particle material transport vehicle, which includes a loading cover 1, a discharge opening ring 2, a translation drive mechanism, an expansion medium charging and discharging unit, a material cover opening switch, a material cover closing switch and a controller. The discharge opening ring 2 is installed on the feeding hole 5 of the tank body 4 of the powder and particle material transport vehicle; the translation drive mechanism is installed on the tank body 4 and connected to the loading cover 1, and is used to drive the loading cover 1 to translate to above the discharge opening ring 2 and move away from above the discharge opening ring 2; a sealing ring 8 is installed on the bottom surface of the loading cover 1, and the expansion medium charging and discharging unit can charge and discharge expansion medium into the sealing ring 8 to expand or contract the sealing ring 8, and the sealing ring 8 can seal with the discharge opening ring 2 after expansion; the translation drive mechanism, the expansion medium charging and discharging unit, the material cover opening switch and the material cover closing switch are respectively electrically connected to the controller.

[0031] See Figure 2 and Figure 3 The feeding cover 1 includes a feeding opening ring 14 and a cover plate 15. The cover plate 15 is welded to the top surface of the feeding opening ring 14. An annular groove 16 is opened on the bottom surface of the feeding opening ring 14 along its circumference. The sealing ring 8 is embedded in the annular groove 16. With this design, the feeding cover has a simple structure, is easy to process and manufacture, and is also easy to install and protect the sealing ring.

[0032] See Figures 1 to 4The translation drive mechanism includes a drive device and a slide rail 6. The slide rail 6 is arranged on the front and rear sides of the discharge opening ring 2 in the left-right direction. A slide rail fixing column 20 is bolted to each end of the slide rail 6. The slide rail fixing column 20 is welded to the tank body 4. A limit switch 7 is mounted on the right slide rail fixing column 20. The drive device and limit switch 7 are each electrically connected to the controller. The loading cover 1 is slidably connected to the slide rail 6. The drive device is installed on the tank body 4 and connected to the loading cover 1, which is used to drive the loading cover 1 to translate left and right. When the loading cover 1 translates to the right to be directly above the discharge opening ring 2, the limit switch 7 on the slide rail 6 is triggered. The provision of the slide rail ensures that the loading cover moves accurately and smoothly under the drive of the drive device.

[0033] See Figure 1 、 Figure 3 and Figure 4 , two pressure plates 17 are fixedly installed on the top surface of the feeding cover 1. The length direction of the pressure plate 17 is perpendicular to the slide rail 6. The two ends of the pressure plate 17 extend to the top of the slide rail 6 and are slidably connected to the slide rail 6. When the feeding cover 1 is translated to the top of the discharge opening ring 2, the pressure plate 17 on the right triggers the travel switch 7. A feeding cover limit assembly is respectively provided on the outer side of each end of the pressure plate 17. The feeding cover limit assembly is installed on the tank body 4 to prevent the feeding cover 1 from moving upward after the sealing ring 8 expands. Preferably, the feeding cover limit assembly includes a mounting seat 21 and an adjusting bolt 22. The lower end of the mounting seat 21 is welded to the tank body 4. The upper end of the mounting seat 21 has a horizontal extension plate 23. The horizontal extension plate 23 extends to the top of the pressure plate 17. The adjusting bolt 22 passes through the horizontal extension plate 23 and is locked by a nut 29. The adjusting bolt 22 is used to press the pressure plate 17 after the sealing ring 8 expands, thereby preventing the feeding cover 1 from moving upward. Such a design can easily realize the sliding connection between the loading cover and the slide rail. At the same time, the cooperation between the pressure plate and the loading cover limit assembly also realizes the vertical limitation of the loading cover. Therefore, after the sealing ring expands, it can seal the gap between the loading cover and the unloading port ring, thereby realizing effective sealing of the material cover. The adjusting bolts are easy to adjust. When in use, ensure that the four adjusting bolts press the pressure plate at the same time.

[0034] See Figure 1 and Figure 2In this embodiment, the driving device uses a cylinder 3, the cylinder body of the cylinder 3 is hinged to the cylinder fixing bracket 18 fixed on the tank body 4, and a cylinder connecting seat 19 is fixedly installed on the left side of the pressure plate 17 on the left. The piston rod of the cylinder 3 is hinged to the cylinder connecting seat 19, and a cylinder solenoid valve 11 is installed on the pipe gas path of the cylinder 3 (including the cylinder contraction pipe gas path 9 and the cylinder extension pipe gas path 10). The cylinder solenoid valve 11 is a two-position five-way solenoid valve, and the cylinder solenoid valve 11 is electrically connected to the controller; the sealing ring 8 uses a high-pressure sealing ring, and the expansion medium charging and discharging unit includes a sealing ring solenoid valve 13, which is a two-position three-way solenoid valve. The sealing ring solenoid valve 13 is installed on the pipe gas path 12 of the sealing ring and is electrically connected to the controller. With this design, both the drive unit and the sealing ring are powered by high-pressure gas, and the power source is the same. Moreover, since the powder and granular material transport vehicle itself has a brake air tank, the air line of the cylinder 3 and the air line 12 of the sealing ring can be connected to the brake air tank of the powder and granular material transport vehicle, respectively, during use. This eliminates the need for a separate power source and effectively saves costs. In addition to using an air cylinder, the drive unit can also use a hydraulically driven oil cylinder or an electrically driven motor. The installation of the oil cylinder is similar to that of the air cylinder and will not be described in detail here. When a motor is used, it can be used in conjunction with a screw, and the cylinder fixing bracket is replaced with a nut. The screw thread is assembled on the nut, and one end of the screw is connected to the motor, and the other end is connected to the loading cover. In addition to high-pressure gas, the expansion medium in the sealing ring 8 can also be a liquid, such as water or oil.

[0035] See Figure 3 and Figure 5 The material cover of a powder and particle material transport vehicle of the present invention also includes an elastic scraper 24. The elastic scraper 24 can be made of a highly elastic thin steel plate with low cost. The elastic scraper 24 is arranged on the right side of the loading cover 1 and its plate surface is arranged vertically. The length direction of the elastic scraper 24 is perpendicular to the translation direction of the loading cover 1. The upper end of the elastic scraper 24 is fixedly connected to the scraper connecting angle steel 26 by a scraper connecting bolt 25. The scraper connecting angle steel 26 is fixedly connected to the assembly connecting angle steel 28 by an assembly connecting bolt 27. The assembly connecting angle steel 28 is welded and fixed to the loading cover 1. The lower edge of the elastic scraper 24 is lower than the upper end surface of the discharge port ring 2. In the process of the loading cover 1 being translated to the top of the discharge port ring 2 or moving away from the top of the discharge port ring 2, the elastic scraper 24 can scrape the upper end surface of the discharge port ring 2. By setting up an elastic scraper, when the loading cover moves horizontally to the top of the discharge opening ring and moves away from the top of the discharge opening ring, the elastic scraper can scrape the discharge opening ring twice, thereby realizing self-cleaning of dust, debris, etc. on the discharge opening ring, ensuring that the high-pressure sealing ring can reliably contact the discharge opening ring, and ensuring the reliability of the seal.

[0036] The present invention provides a powder and particle material transport vehicle, wherein the powder and particle material transport vehicle cover of the present invention is installed on the tank body of the transport vehicle.

[0037] The following describes in detail the opening and closing process of the cover of the powder material transport vehicle of the present invention. Figure 1 For example.

[0038] 1. Open

[0039] Before opening, check the pressure gauge of tank 4 to confirm that there is no high-pressure gas in tank 4. If there is, you need to operate the air release valve (provided with the vehicle tank) to release the gas first;

[0040] Turn on the cover opening switch, so that the controller connects to the sealing ring solenoid valve 13, and the sealing ring solenoid valve 13 opens the air release valve of the sealing ring 8. The sealing ring 8 discharges the internal high-pressure gas through its own resilience, and the sealing ring 8 contracts, and the sealing ring 8 breaks contact with the discharge port ring 2, and the seal is released; then the controller connects to the cylinder solenoid valve 11, and the cylinder solenoid valve 11 opens the cylinder contraction pipe air path 9. Under the action of the high-pressure gas, the piston rod of the cylinder 3 contracts, driving the feeding cover 1 to move horizontally to the left. After the cylinder 3 reaches the minimum contraction limit stroke, it stops automatically. At this time, the discharge port ring 2 is completely exposed, and the purpose of opening the cover is achieved.

[0041] 2. Close

[0042] When the cover is closed, the controller is connected to the cylinder solenoid valve 11, and the cylinder solenoid valve 11 opens the cylinder extension pipe air path 10. Under the action of high-pressure gas, the piston rod of the cylinder 3 extends, driving the loading cover 1 to move horizontally to the right. When the loading cover 1 moves horizontally to just above the discharge opening ring 2, the travel switch 7 is triggered, so that the controller controls the cylinder solenoid valve 11 to cut off the power, and the cylinder solenoid valve 11 closes the pipe air path of the cylinder 3, and the cylinder 3 stops working; at the same time, the travel switch 7 is triggered, and the controller is also connected to the sealing ring solenoid valve 13, and the sealing ring solenoid valve 13 opens the air inlet valve of the sealing ring 8. The sealing ring 8 expands, driving the loading cover 1 to rise. Under the reverse force of the adjusting bolt 22 of the loading cover limit assembly, the sealing ring 8 seals the gap between the loading cover 1 and the discharge opening ring 2, thereby achieving the purpose of closing and sealing the material cover.

[0043] The above describes in detail the material cover and the powder and granular material transport vehicle provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A material cover for a powder and granular material transport vehicle, characterized by: It includes a loading cover, a discharge opening ring, a translation drive mechanism, an expansion medium charging and discharging unit and a controller, the discharge opening ring is installed on the feeding hole of the tank body of the powder and granular material transport vehicle; the translation drive mechanism is installed on the tank body and connected to the loading cover, and is used to drive the loading cover to translate to above the discharge opening ring and move away from above the discharge opening ring; a sealing ring is installed on the bottom surface of the loading cover, and the expansion medium charging and discharging unit can charge and discharge expansion medium into the sealing ring to make the sealing ring expand or contract, and the sealing ring can be sealed with the discharge opening ring after expansion; the translation drive mechanism and the expansion medium charging and discharging unit are electrically connected to the controller respectively; the loading cover includes a loading opening The cam is connected to the bottom surface of the feeding port ring and the bottom surface of the feeding port ring is provided with an annular groove along its circumference, and the sealing ring is embedded in the annular groove; the translation drive mechanism includes a driving device and a slide rail, and the slide rail is arranged on the front and rear sides of the discharge port ring along the left and right directions and is installed on the tank body, and the feeding cover is slidably connected to the slide rail; the driving device is installed on the tank body and connected to the feeding cover, and is used to drive the feeding cover to translate left and right, and when the feeding cover translates to the right to be just above the discharge port ring, the limit switch on the slide rail is triggered, and the driving device and the limit switch are electrically connected to the controller respectively; on the top surface of the feeding cover Two pressure plates are fixedly installed, the length direction of the pressure plate is perpendicular to the slide rail, the two ends of the pressure plate extend to above the slide rail and are slidably connected to the slide rail, and a loading cover limit assembly is respectively provided on the outer sides of the two ends of the pressure plate, and the loading cover limit assembly is installed on the tank body to prevent the loading cover from moving upward after the sealing ring expands; the loading cover limit assembly includes a mounting seat and an adjusting bolt, the lower end of the mounting seat is fixedly connected to the tank body, and the upper end of the mounting seat has a horizontal extension plate, which extends to above the pressure plate, and the adjusting bolt passes through the horizontal extension plate and is locked by a nut, and the adjusting bolt is used to press the housing after the sealing ring expands. The pressure plate prevents the loading cover from moving upward; the sealing ring is a high-pressure sealing ring, and the expansion medium charging and discharging unit includes a sealing ring solenoid valve, which is installed on the pipe air path of the sealing ring and is electrically connected to the controller; it also includes an elastic scraper, which is arranged on the right side of the loading cover and the plate surface is vertically arranged, and the length direction of the elastic scraper is perpendicular to the translation direction of the loading cover. The upper end of the elastic scraper is fixedly mounted on the loading cover, and the lower edge is lower than the upper end surface of the discharge port ring. In the process of the loading cover being translated to the top of the discharge port ring or moving away from the top of the discharge port ring, the elastic scraper can scrape the upper end surface of the discharge port ring.

2. The material cover for a powder and granular material transport vehicle according to claim 1, characterized in that: The driving device is a cylinder, the cylinder body of the cylinder is hinged to the cylinder fixing bracket fixed on the tank body, the loading cover is fixedly installed with a cylinder connecting seat, the piston rod of the cylinder is hinged to the cylinder connecting seat, and a cylinder solenoid valve is installed on the air pipe of the cylinder, and the cylinder solenoid valve is electrically connected to the controller.

3. The material cover for a powder and granular material transport vehicle according to claim 1, characterized in that: It also includes materials A cover opening switch and a cover closing switch, wherein the cover opening switch and the cover closing switch are electrically connected to the controller respectively.

4. A powder and particle material transport vehicle, characterized by: The tank body of the transport vehicle is equipped with a material cover according to any one of claims 1 to 3.

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