Gate-type adjustable distributing quantity coal plough

Abstract

The utility model relates to a gate-type adjustable-distributing-quantity coal plough which comprises a base, a movable connecting frame, a carrier roller set, a push rod support, a first electric-hydraulic push rod, a swing rod, an upper connecting rod, a lower connecting rod, a composite coal plough assembly and a distributing quantity control system. The composite coal ploughing assembly is composed of a V-shaped coal guide plate, a main coal ploughing piece, a second electric-hydraulic push rod and an edge coal cleaning moldboard; and the main coal ploughing piece can lift and move under the driving of the second electric-hydraulic pusher. According to the coal plough, coal on the belt conveyor can be accurately ploughed out according to the required distribution amount, and remote distribution control over different discharging amounts of different parts can be achieved through a distribution amount control system.

Description

Technical Field

[0001] This utility model relates to a coal plow, and more particularly to a gantry-type adjustable material dispensing coal plow. Background Technology

[0002] A plowshare, also known as a plow-type unloader, is widely used in industries such as coal and metallurgy, as well as in power plants and docks. It is a common intermediate or segmental unloading device on belt conveyors. The plowshare is installed on the intermediate frame of the belt conveyor to perform the tasks of unloading and controlling the flow of materials, enabling it to unload materials transported by the belt conveyor into hoppers or transfer them to other locations.

[0003] When the coal plow is working, the push rod extends and acts on the drive rod, causing the plow blade to fall. The connecting rod mechanism supports the idler roller assembly, making the working surface of the belt conveyor straight. The lower edge of the plow blade is in close contact with the belt surface, unloading the material on the belt into the coal hopper or transfer chute.

[0004] Currently, widely used coal plows achieve different functions through the raising and lowering of the plow blades. When the plow blades fall and are close to the conveyor belt, they can plow out all the coal on the conveyor belt. When the plow blades fall into the coal on the conveyor belt but still maintain a certain distance from the conveyor belt, they can plow out a portion of the upper coal. When the plow blades are raised above the coal on the conveyor belt, they do not cut off or plow out the coal flow, and all the coal passes through.

[0005] For example, the Chinese patent application CN 110775599 A discloses a coal plow, which includes a support frame, a plow plate, a pair of vertically arranged lifting hydraulic cylinders, a linear electric push rod, and multiple sets of idlers arranged on the upper part of the support frame, with belts mounted on the upper surfaces of the idlers. The plow plate is composed of plow blades arranged symmetrically on both sides and integrally formed. The pair of vertically arranged lifting hydraulic cylinders are respectively arranged on the front and rear sides of the belt, and the cylinder barrels of the pair of vertically arranged lifting hydraulic cylinders are fixedly connected to the support frame. The piston rod ends of the pair of vertically arranged lifting hydraulic cylinders are fixedly connected to a horizontally arranged crossbeam. The seat of the linear electric push rod is hinged to the upper end of the rotating arm, and the lower end of the rotating arm is hinged to the upper end of the crossbeam. The rod end of the linear electric push rod is hinged to the upper right end of the plow plate. This coal plow has a simple structure and is easy to install and maintain.

[0006] The disadvantage of the above-mentioned coal plow is that it cannot precisely plow out a certain amount of coal when it is necessary to do so.

[0007] Chinese utility model patent CN 217024317 U discloses a "vertical lifting double-plowhead coal plow," comprising a unloader bracket. The top of the unloader bracket has a first mounting frame and a second mounting frame arranged from left to right. A first hydraulic push rod and a second hydraulic push rod are respectively mounted on the first and second mounting frames. The bottom ends of the first and second hydraulic push rods penetrate through the first and second mounting frames and extend to their outer sides. This vertical lifting double-plowhead coal plow allows for the installation of two single-sided plow-type unloaders within a limited space, saving installation space and reducing the difficulty of modifying existing equipment. Different unloading requirements can be met by controlling either the first or second hydraulic rod, thereby controlling either the first or second single-sided plowhead and achieving different unloading needs.

[0008] The aforementioned vertical lifting double-plowhead coal plow can only be adjusted in two stages, meaning it can only achieve two different unloading volumes. Therefore, it cannot be used in situations where there are multiple unloading volume requirements and precise requirements for unloading volume. Summary of the Invention

[0009] This utility model provides a gantry-type adjustable material distribution coal plow, which can accurately plow out the coal material on the belt conveyor according to the required material distribution, and can realize remote distribution control of different unloading amounts at different parts through the material distribution control system.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A portal-type adjustable material distribution coal plow includes a base, a movable connecting frame, and an idler roller assembly located below a belt conveyor. The idler roller assembly is connected to the base via the movable connecting frame. It also includes push rod supports, an electro-hydraulic push rod, swing rods, an upper connecting rod, a lower connecting rod, and a composite coal plow assembly. Two push rod supports are respectively located on the base on both sides of the belt conveyor. The upper parts of the push rod supports are connected via an upper connecting shaft to form a portal frame structure. The middle parts of the two swing rods are rotatably connected to the corresponding ends of the upper connecting shaft. The lower parts of the push rod supports are connected via a lower connecting shaft, one end of which is connected to the extended end of the electro-hydraulic push rod. The upper ends of the two swing rods are hinged to one end of the corresponding upper connecting rod. The other ends of the two upper connecting rods are hinged to a fixing component in the composite coal plow assembly. The composite coal plow assembly consists of a V-shaped guide... The system comprises a coal plate, a main coal plow, an electro-hydraulic push rod II, and an edge coal cleaning plow plate. The V-shaped coal guide plate is a vertical plate with a V-shaped cross-section, its tip facing the coal delivery direction. The main coal plow consists of a V-shaped inner sleeve plate and a main coal plow plate. The inner sleeve plate is located inside the V-shaped coal guide plate, and the two are slidably connected to form a nested structure. The main coal plow plate is located at the bottom of the inner sleeve plate. A top plate is located at the top of the V-shaped coal guide plate, and an electro-hydraulic push rod II is located on the top plate. The extended end of the electro-hydraulic push rod II is connected to the main coal plow, allowing the main coal plow to move up and down under the drive of the electro-hydraulic push rod II. Along the coal conveying direction, the edge coal cleaning plow plates are located on both downstream sides of the V-shaped coal guide plate. The top of the edge coal cleaning plow plates is connected to the top plate, the inner end of the edge coal cleaning plow plates is connected to the V-shaped coal guide plate, and the outer end of the edge coal cleaning plow plates is hinged to the push rod support via a lower connecting rod.

[0012] A gantry-type adjustable material distribution coal plow also includes a material distribution control system. The material distribution control system includes a main controller, a composite coal plow assembly limit switch, and a main coal plow plate limit controller. The composite coal plow assembly limit switch is located on the outside of the extended end of the electro-hydraulic push rod one, and the main coal plow plate limit controller is located on the outside of the extended end of the electro-hydraulic push rod two. An electronic belt scale one is installed below the belt conveyor belt upstream of the gantry-type adjustable material distribution coal plow, and an electronic belt scale two is installed below the belt conveyor belt downstream of the gantry-type adjustable material distribution coal plow. The signal output terminals of the electronic belt scale one, the electronic belt scale two, and the composite coal plow assembly limit switch are respectively connected to the main controller. The control terminals of the electro-hydraulic push rod one, the electro-hydraulic push rod two, and the main coal plow plate limit controller are respectively connected to the main controller. The main controller is also connected to a centralized coal conveying control system.

[0013] Furthermore, guide rail grooves are provided in the middle and at both ends of the V-shaped coal guide plate, and T-shaped guide rails are provided at corresponding positions of the V-shaped inner sleeve plate. The sliding connection between the main plow and the V-shaped coal guide plate is achieved through the cooperation of the T-shaped guide rails and the guide rail grooves.

[0014] Furthermore, an upper support plate and a lower support plate are spaced apart below the top plate, both of which are parallel to the top plate; an electro-hydraulic actuator is fixed to the top plate, and its extended end passes through the top plate and is hinged to the upper support plate; one end of the upper support plate and the lower support plate are respectively connected to the V-shaped inner sleeve plate; a support plate is also provided at the top of the main plow plate at the end away from the V-shaped inner sleeve plate, and the upper support plate and the lower support plate are respectively connected to the support plate; the upper support plate, the lower support plate, the support plate, and the main plow plate together form an integral moving assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) The V-shaped coal guide plate in the composite coal plow assembly does not directly contact the belt surface. It is only used for coal stratification and then the main coal plow component plows out the required coal. The main coal plow component is driven by the electro-hydraulic push rod 2, which can achieve stepless adjustment, thereby achieving the purpose of accurately adjusting the coal unloading amount.

[0017] 2) It is equipped with a material distribution control system, which adopts a feedback control closed-loop adjustment method, and can accurately plow out the coal according to the set coal unloading amount;

[0018] 3) The use of V-shaped coal guide plates in conjunction with the main coal plowing components reduces the resistance of coal plowing and avoids excessive wear on the belt;

[0019] 4) The gantry-type adjustable material distribution plow has a reasonable structure, which can make the distribution of coal in the width direction of the belt conveyor consistent with the distribution of incoming coal in the width direction of the belt conveyor, which facilitates the subsequent processing of coal and can effectively prevent the belt conveyor from running off-center. Attached Figure Description

[0020] Figure 1 This is the main view of the portal-type adjustable material dispensing coal plow described in this utility model. Figure 1 (Before the composite plow assembly falls).

[0021] Figure 2 This is the main view of the portal-type adjustable material dispensing coal plow described in this utility model. Figure 2 (After the composite plow assembly descended, before the main plow assembly descended).

[0022] Figure 3 yes Figure 2 Side view.

[0023] Figure 4 yes Figure 2 Top view.

[0024] Figure 5 This is the main view of the portal-type adjustable material dispensing coal plow described in this utility model. Figure 3 (After the composite plow assembly descends, the main plow assembly descends).

[0025] Figure 6 This utility model discloses a control principle diagram of a gantry-type adjustable material distribution coal plow.

[0026] In the diagram: 1. Base 2. Movable connecting frame 3. Idler roller assembly 4. Belt conveyor 5. Electronic belt scale I 6. Electronic belt scale II 7. Electro-hydraulic push rod I 8. Push rod bracket 9. Swing rod 10. Upper connecting rod 11. Composite coal plow assembly 111. Edge coal cleaning plow plate 112. Top plate 113. V-shaped coal guide plate 114. Upper support plate 115. Electro-hydraulic push rod II 116. Main coal plow plate stroke controller 117. Main coal plow plate 118. Lower support plate 119. Guide rail groove 120. T-shaped guide rail 12. Composite coal plow assembly limit switch 13. Main controller 14. Coal conveying centralized control system 15. Lower connecting shaft 16. Coal unloading chute Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0028] like Figures 1-5As shown, the gantry-type adjustable material distribution coal plow of this utility model includes a base 1, a movable connecting frame 2, and an idler roller assembly 3 located below the belt conveyor 4. The idler roller assembly 3 is connected to the base 1 through the movable connecting frame 2. It also includes push rod supports 8, an electro-hydraulic push rod 7, a swing rod 9, an upper connecting rod 10, a lower connecting rod, and a composite coal plow assembly 11. Two push rod supports 8 are respectively located on the base 1 on both sides of the belt conveyor 4. The upper part of the push rod supports 8 is connected to the upper connecting shaft. The structure is formed into a portal frame; the middle parts of the two swing rods 9 are rotatably connected to the corresponding ends of the upper connecting shaft, the lower part of the push rod bracket 8 is connected through the lower connecting shaft 15, one end of the lower connecting shaft 15 is connected to the extended end of the electro-hydraulic push rod 7, and the upper ends of the two swing rods 9 are hinged to one end of the corresponding upper connecting rod 10; the other ends of the two upper connecting rods 10 are hinged to the fixing parts in the composite plow assembly 11; the composite plow assembly 11 consists of a V-shaped coal guide plate 113, a main plow coal... The main coal plow consists of a V-shaped guide plate 113, an electro-hydraulic actuator 115, and an edge coal cleaning plow plate 111; the V-shaped guide plate 113 is a vertical plate with a V-shaped cross-section, its tip facing the coal inlet direction; the main coal plow consists of a V-shaped inner sleeve plate and a main coal plow plate 117, the V-shaped inner sleeve plate being located inside the V-shaped guide plate 113, the two being slidably connected to form a nested structure; the main coal plow plate 117 is located at the bottom of the V-shaped inner sleeve plate; the top plate 112 is located at the top of the V-shaped guide plate 113, and the electro-hydraulic actuator 115 is located on the top plate. On 112, the extended end of the electro-hydraulic push rod 115 is connected to the main coal plow component. Driven by the electro-hydraulic push rod 115, the main coal plow component can move up and down. Along the coal conveying direction, the edge coal cleaning plow plate 111 is located on both downstream sides of the V-shaped coal guide plate 113. The top of the edge coal cleaning plow plate 111 is connected to the top plate 112, the inner end of the edge coal cleaning plow plate 111 is connected to the V-shaped coal guide plate 113, and the outer end of the edge coal cleaning plow plate 112 is hinged to the push rod bracket 8 through the lower connecting rod.

[0029] like Figure 6 As shown, the gantry-type adjustable material distribution plow of this utility model also includes a material distribution control system; the material distribution control system includes a main controller 13, a composite plow assembly travel switch 12, and a main plow plate travel controller 116; the composite plow assembly travel switch 12 is located outside the extended end of the electro-hydraulic push rod 7, and the main plow plate travel controller 116 is located outside the extended end of the electro-hydraulic push rod 115; an electronic belt scale 5 is installed below the belt of the upstream belt conveyor 4 of the gantry-type adjustable material distribution plow, and an electronic belt scale 6 is installed below the belt of the downstream belt conveyor 4 of the gantry-type adjustable material distribution plow; the signal output terminals of the electronic belt scale 5, the electronic belt scale 6, and the composite plow assembly travel switch 12 are respectively connected to the main controller 13, and the control terminals of the electro-hydraulic push rod 7, the electro-hydraulic push rod 115, and the main plow plate travel controller 116 are respectively connected to the main controller 13, and the main controller 13 is also connected to the coal conveying centralized control system 14.

[0030] Furthermore, the V-shaped coal guide plate 113 is provided with guide rail grooves 119 at its middle and both ends, and T-shaped guide rails 120 are provided at corresponding positions on the V-shaped inner sleeve plate. The sliding connection between the main plow and the V-shaped coal guide plate 113 is achieved through the cooperation of the T-shaped guide rails 120 and the guide rail grooves 119.

[0031] Furthermore, an upper support plate 114 and a lower support plate 118 are spaced apart below the top plate 112, and both the upper support plate 114 and the lower support plate 118 are arranged parallel to the top plate 112; an electro-hydraulic actuator 115 is fixed on the top plate 112, and the extended end of the electro-hydraulic actuator 115 passes through the top plate 112 and is hinged to the upper support plate 114; one end of the upper support plate 114 and the lower support plate 118 are respectively connected to the V-shaped inner sleeve plate; a support plate is also provided at the top of the main plow plate 117 at the end away from the V-shaped inner sleeve plate, and the upper support plate 114 and the lower support plate 118 are respectively connected to the support plate; the upper support plate 114, the lower support plate 118, the support plate and the main plow plate form an integral moving assembly.

[0032] The control method of the gantry-type adjustable material distribution plow described in this utility model is as follows:

[0033] 1) The centralized coal conveying control system 14 sends the set initial value of the unit coal unloading amount to the main controller 13;

[0034] 2) After the belt conveyor 4 is started, the electronic belt scale 5 sends the measured value of coal quantity per unit time of the belt conveyor to the main controller 13;

[0035] 3) The main controller 13 sends a start command to the electro-hydraulic actuator 7, and the electro-hydraulic actuator 7 pushes the composite plow assembly 11 to fall towards the belt surface;

[0036] 4) The main controller 13 calculates the unit coal transport volume after passing through the coal plow, that is, the coal transport volume of the belt conveyor per unit time minus the coal unloading volume of the coal plow per unit time; then converts the unit coal transport volume after passing through the coal plow into the material layer height when the coal passes through the coal plow, that is, the height value of the main coal plow plate from the belt surface, and sends the calculated height value to the main coal plow plate stroke controller 116.

[0037] 5) The main controller 13 sends a start command to the electro-hydraulic actuator 115. After the electro-hydraulic actuator 115 starts, when it reaches the designated position controlled by the main plow plate stroke controller 116, it sends a feedback signal to the main controller 13. The main controller 13 controls the electro-hydraulic actuator 115 to stop moving.

[0038] 6) The electronic belt scale 26 sends the measured value of the amount of coal passing through the coal plow per unit time of the belt conveyor to the main controller 13;

[0039] 7) The main controller 13 compares the coal quantity measurement value sent by the electronic belt scale 2 6 with the set initial value of the unit unloading coal quantity; when the coal quantity measurement value is greater than the set initial value, the electro-hydraulic actuator 2 115 is started for fine adjustment, at which time the electro-hydraulic actuator 2 115 drives the main plow coal component to press down; conversely, when the coal quantity measurement value is less than the set initial value, the electro-hydraulic actuator 2 drives the main plow coal component to lift up; until the coal quantity measurement value is consistent with the initial set value, the adjustment stops.

[0040] In the gantry-type adjustable material distribution coal plow (hereinafter referred to as coal plow), the base 1, roller group 3 and movable connecting frame 2 are conventionally set. When the electro-hydraulic push rod 7 extends and drives the composite coal plow assembly 11 to descend, the roller group 3 is supported by the movable connecting frame 2, so that the working surface of the belt conveyor 4 is straight, which is conducive to coal plowing operation.

[0041] In this invention, the electro-hydraulic actuator 7 generates driving force, which is connected to a four-bar linkage consisting of a swing rod 9, an upper connecting rod 10, a lower connecting rod, and a push rod bracket 8. This linkage drives the composite plow assembly 11 to lift or lower, resulting in high stability and precision in its operation.

[0042] In the composite coal plow assembly 11 of this utility model, the V-shaped coal guide plate 113 and the edge coal cleaning plow plate 111 are an integral structure. The main coal plowing component is set in the internal space enclosed by the V-shaped coal guide plate 113. The main coal plowing component is a three-dimensional spatial structure composed of a V-shaped inner sleeve plate and a main coal plow plate 117, and is the main coal plowing component. The main coal plowing component can be raised and lowered under the drive of the electro-hydraulic push rod 115. During the coal plowing process, the V-shaped coal guide plate 113 always maintains a certain distance from the belt surface of the belt conveyor 4, that is, it does not directly contact the belt surface. The V-shaped coal guide plate 113 can pre-level the coal conveyed on the belt conveyor 4 to ensure the accuracy of the coal unloading amount when the main coal plowing component unloads coal. The edge coal cleaning plow plate 111 mainly ensures that all the plowed coal falls into the unloading chutes 16 on both sides.

[0043] This utility model is equipped with a material distribution control system. Through the cooperation of the main controller 13 with electro-hydraulic push rod 1 7, electro-hydraulic push rod 2 115, main plow plate stroke controller 116, composite plow assembly stroke switch 12, electronic belt scale 1 5, and electronic belt scale 2 6, as well as information transmission with the external coal conveying centralized control system 14, feedback control closed-loop regulation is realized to ensure that the coal is accurately plowed out according to the set coal unloading amount.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gate type adjustable coal distribution plough, comprising a base arranged below a belt conveyor, a movable connecting frame and a roller set, the roller set being connected to the base through the movable connecting frame; characterized in that, The door type adjustable material quantity plough coal device further comprises a push rod support, an electro-hydraulic push rod one, a swing rod, an upper connecting rod, a lower connecting rod and a composite plough coal assembly; the two push rod supports are respectively arranged on the bases on the two sides of the belt conveyor, the upper parts of the push rod supports are connected through upper connecting shafts to form a door type frame structure; the middle parts of the two swing rods are respectively rotationally connected with the corresponding ends of the upper connecting shafts, the lower parts of the push rod supports are connected through a lower connecting shaft, one end of the lower connecting shaft is connected with the extending end of the electro-hydraulic push rod one, the upper ends of the two swing rods are hingedly connected with one end of the corresponding upper connecting rod; the other end of the two upper connecting rods is hingedly connected with a fixed part in the composite plough coal assembly; the composite plough coal assembly comprises a V-shaped coal guide plate, a main plough coal part, an electro-hydraulic push rod two and an edge coal cleaning plough plate; the V-shaped coal guide plate is a vertical plate with a V-shaped cross section, and the tip end thereof is arranged to face the coal feeding direction; the main plough coal part comprises a V-shaped inner sleeve plate and a main plough coal plate; the V-shaped inner sleeve plate is arranged on the inner side of the V-shaped coal guide plate, and the two are slidingly connected to form a nested structure; the bottom of the V-shaped inner sleeve plate is provided with the main plough coal plate; the top of the V-shaped coal guide plate is provided with a top plate, the electro-hydraulic push rod two is arranged on the top plate, the extending end of the electro-hydraulic push rod two is connected with the main plough coal part, and the main plough coal part can be driven to move up and down by the electro-hydraulic push rod two; along the coal conveying direction, the edge coal cleaning plough plate is arranged on the downstream sides of the V-shaped coal guide plate, the top of the edge coal cleaning plough plate is connected with the top plate, the inner end of the edge coal cleaning plough plate is connected with the V-shaped coal guide plate, and the outer end of the edge coal cleaning plough plate is hingedly connected with the push rod support through the lower connecting rod.

2. A gate adjustable coal divider according to claim 1, wherein, The door type adjustable material quantity plough coal device further comprises a material quantity control system; the material quantity control system comprises a main controller, a composite plough coal assembly stroke switch and a main plough coal plate stroke controller; the composite plough coal assembly stroke switch is arranged on the outer side of the extending end of the electro-hydraulic push rod one, and the main plough coal plate stroke controller is arranged on the outer side of the extending end of the electro-hydraulic push rod two; an electronic belt scale one is arranged below the belt of the belt conveyor upstream of the door type adjustable material quantity plough coal device, and an electronic belt scale two is arranged below the belt of the belt conveyor downstream of the door type adjustable material quantity plough coal device; the signal output ends of the electronic belt scale one, the electronic belt scale two and the composite plough coal assembly stroke switch are respectively connected with the main controller; the control ends of the electro-hydraulic push rod one, the electro-hydraulic push rod two and the main plough coal plate stroke controller are respectively connected with the main controller; and the main controller is additionally connected with a coal conveying centralized control system.

3. A gate adjustable coal divider according to claim 1, wherein, The middle part and the two ends of the V-shaped coal guide plate are respectively provided with guide rail grooves, and the corresponding positions of the V-shaped inner sleeve plate are respectively provided with T-shaped guide rails, so that the sliding connection between the main plough coal part and the V-shaped coal guide plate is realized through the cooperation of the T-shaped guide rails and the guide rail grooves.

4. A gate adjustable coal divider according to claim 1, wherein, The lower part of the top plate is spaced apart and provided with an upper support plate and a lower support plate, and the upper support plate and the lower support plate are arranged in parallel with the top plate; the electro-hydraulic push rod two is fixed on the top plate, and the extending end of the electro-hydraulic push rod two is hingedly connected with the upper support plate after penetrating through the top plate; one end of the upper support plate and the lower support plate is respectively connected with the V-shaped inner sleeve plate; the top of the main plough coal plate is further provided with a support vertical plate at the end away from the V-shaped inner sleeve plate, and the upper support plate, the lower support plate and the support vertical plate are connected with the main plough coal part; and the upper support plate, the lower support plate, the support vertical plate and the main plough coal part form an integral moving assembly.

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