A chain belt combined with an active loading type loading mechanism

Abstract

The present invention belongs to the technical field of roadheader loading, and specifically relates to a chain-belt combined active loading mechanism. It includes a scraper plate body, a scraper chain, a belt redirecting roller, a discharging device, a tensioning device, a conveyor belt and a redirecting drive device. The scraper plate body is the main frame, and the redirecting drive device is installed at the front end of the scraper plate body. Belt redirecting rollers are respectively installed on both sides of the rear end of the scraper plate body. Tensioning devices are respectively installed on both sides inside the scraper plate body, and the telescopic ends of the tensioning devices are connected to the corresponding belt redirecting rollers. A scraper chain is arranged on the upper surface of the middle part of the scraper plate body, and the front end of the scraper chain is connected to the redirecting drive device fixed on the scraper plate body. The rear end of the scraper chain passes through the scraper conveyor and is connected to the drive motor. Both ends of the redirecting drive device are respectively connected to the belt redirecting rollers through two conveyor belts. Two discharging devices are symmetrically arranged on the upper surfaces of both sides of the scraper plate body, and the bottom of the discharging device is in contact with the upper surface of the conveyor belt. The present invention solves the problems of low loading efficiency or the existence of loading dead zones.

Description

Technical Field

[0001] The invention belongs to the technical field of roadheader loading, and specifically relates to a chain-belt combined active loading mechanism. Background Art

[0002] As the main mechanism of a roadheader, the loading mechanism is responsible for loading materials such as rocks generated during excavation onto a scraper conveyor and then transferring them to the rear supporting equipment for reloading. The loading mechanism should ensure that the loading and unloading efficiency is greater than the cutting production efficiency, and the width of the shovel plate should match the width of the whole machine and the roadway. Currently, the loading mechanism generally adopts star wheels or crab claws for active loading and unloading, actively loading the coal and rock entering the upper surface of the shovel plate into the scraper transport trough. When the length-width ratio of the shovel plate is appropriate, both of these loading forms can be applied. However, in actual design, there will be application requirements for ultra-narrow or ultra-wide conditions, resulting in a serious imbalance in the length-width ratio of the shovel plate. Using star wheels or crab claws for loading requires a certain amount of movement space, and due to limited space layout, problems such as low loading efficiency or a large number of loading dead zones occur, and manual cleaning of the piled materials is required, which brings great trouble to on-site production. Summary of the Invention

[0003] In order to solve the above problems, the invention provides a chain-belt combined active loading mechanism.

[0004] The invention adopts the following technical solutions: A chain-belt combined active loading mechanism includes a shovel plate body, a scraper chain, a belt redirecting roller, a discharging device, a tensioning device, a conveyor belt, and a redirecting driving device. The shovel plate body is the main frame, and the redirecting driving device is installed at the front end of the shovel plate body. Belt redirecting rollers are respectively installed on both sides of the rear end of the shovel plate body. Tensioning devices are respectively installed on both sides inside the shovel plate body, and the telescopic ends of the tensioning devices are connected to the corresponding belt redirecting rollers. A scraper chain is arranged on the upper surface of the middle part of the shovel plate body. The front end of the scraper chain is connected to the redirecting driving device fixed on the shovel plate body, and the rear end of the scraper chain passes through the scraper conveyor and is connected to a driving motor. Both ends of the redirecting driving device are respectively connected to the belt redirecting rollers through two conveyor belts. Two discharging devices are symmetrically arranged on the upper surfaces of both sides of the shovel plate body, and the bottom of the discharging device is in contact with the upper surface of the conveyor belt.

[0005] Furthermore, a pin hole I connected to the oil cylinder of the whole machine equipment is arranged at the upper rear part of the shovel plate body, and a pin hole II connected to the main body of the whole machine equipment is arranged at the lower rear part of the shovel plate body. Belt conveyor cavities for arranging redirecting rollers, conveyor belts, and tensioning devices are respectively arranged on both sides inside the shovel plate body. A chain conveyor area for laying the scraper chain is arranged on the upper surface of the middle part of the shovel plate body. A shovel edge is arranged at the front end of the shovel plate body. Mounting holes I for installing the redirecting driving device are arranged on both sides of the front end of the shovel plate body, and rectangular mounting holes II for installing the belt redirecting rollers are arranged on both sides of the rear end of the shovel plate body.

[0006] Further, the redirecting drive device includes a belt drive drum, a drive sprocket, and a chain redirecting drum that are coaxially arranged. The chain redirecting drum is arranged in the middle, and drive sprockets are installed at both ends of the chain redirecting drum. Both ends of the chain redirecting drum are connected to the belt drive drum through bearing II, and bearing I is arranged at the outer end of the belt drive drum, and bearing I is installed in mounting hole I.

[0007] Further, the discharging device includes a guiding surface. Front fixing plates and rear fixing plates for fixing are respectively arranged at both ends of the guiding surface. The guiding surface is an arc-shaped structure, and the cross-section of the guiding surface is an irregular curved surface. The guiding surfaces of two groups of symmetrically arranged discharging devices form a structure with a large inlet and a small outlet.

[0008] Further, the upper end of the guiding surface bends inward, and an angle less than 90° is provided between the lower end of the guiding surface and the contact surface of the conveyor belt.

[0009] Compared with the prior art, the present invention adopts belt continuous transportation combined with a special discharging device, changes the traditional rotary or reciprocating motion into continuous linear motion, and enables the loading range to completely cover the upper surface of the scraper plate. The special-shaped baffle discharging device cooperated with belt transportation can effectively solve the side discharging problem of linear transportation (the scraper chain transportation needs to swing back as a whole to achieve side discharging). The present invention not only solves the problems of low loading efficiency or a large number of loading dead zones caused by the serious imbalance of the length-width ratio of the scraper plate, breaks through the technical bottleneck of the loading and transportation cooperation of the traditional loading mechanism, but also reduces the labor intensity of on-site workers. Description of the Drawings

[0010] Figure 1 It is a structural diagram of a chain-belt combined active loading mechanism;

[0011] Figure 2 It is a front view of a chain-belt combined active loading mechanism;

[0012] Figure 3 It is a structural diagram of the scraper plate body;

[0013] Figure 4 It is a structural diagram of the redirecting drive device;

[0014] Figure 5 It is a structural diagram of the discharging device;

[0015] Figure 6 It is a cross-sectional view of the guiding surface of the discharging device;

[0016] Figure 7 It is an application diagram of a chain-belt combined active loading mechanism;

[0017] In the figure: 1 - scraper plate body, 2 - scraper chain, 3 - belt redirecting roller, 4 - discharging device, 5 - tensioning device, 6 - conveyor belt, 7 - redirecting drive device, 8 - pin hole I, 9 - pin hole II, 10 - belt conveying cavity, 11 - chain conveying area, 12 - cutting edge, 13 - mounting hole I, 14 - mounting hole II, 15 - bearing I, 16 - belt driving roller, 17 - bearing II, 18 - driving sprocket, 19 - chain redirecting roller, 20 - front fixing plate, 21 - guiding surface, 22 - rear fixing plate, 23 - lower end of guiding surface, 24 - upper end of guiding surface, 25 - chain - belt combined active loading type loading mechanism, 26 - scraper conveyor, 27 - driving motor. Detailed implementation manners

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0019] The technical solution adopted by the present invention includes a scraper plate body 1, a scraper chain 2, a belt redirecting roller 3, a discharging device 4, a tensioning device 5, a conveyor belt 6, and a redirecting drive device 7. The scraper plate body 1 is the main frame. The redirecting drive device 7 is installed at the front end of the scraper plate body 1. Two belt redirecting rollers 3 are respectively installed on both sides of the rear end of the scraper plate body 1. Two tensioning devices 5 are respectively installed on both sides inside the scraper plate body 1. The telescopic end of the tensioning device 5 is connected to the corresponding belt redirecting roller 3. The scraper chain is laid flat on the upper surface of the middle part of the scraper plate body through the redirecting drive device. Two conveyor belts 6 connect the two belt redirecting rollers and the redirecting drive device respectively. Two discharging devices 4 are respectively installed on the upper surfaces of both sides of the scraper plate body. The bottom of the discharging device is in contact with the upper surface of the conveyor belt.

[0020] The described scraper plate body 1 is the main frame of a chain-belt combined active loading mechanism: It includes pin hole I 8, pin hole II 9, belt conveying cavity 10, chain conveying area 11, scraper blade 12, mounting hole I 13, and mounting hole II 14. Among them, pin hole I 8 is located at the upper rear part of the scraper plate body and is connected to the oil cylinder of the whole machine equipment. Pin hole II 9 is located at the lower rear part of the scraper plate body and is connected to the main body of the whole machine equipment, enabling the up-and-down swing function of the loading mechanism. The two belt conveying cavities 10 are located on both sides inside the scraper plate body 1 and are used to arrange redirecting rollers, conveyor belts, and tensioning devices. The chain conveying area 11 is located on the upper surface of the middle part of the scraper plate body 1 and is mainly used for laying the scraper chain. The scraper blade 12 is located at the front end of the scraper plate body 1 and plays a role in passive loading. The scraper blade 12 covers the entire redirecting drive device to prevent the piled material from leaking through the gap between the redirecting drive device and the scraper plate body. Mounting hole I 13 is located at the front end of the scraper plate body and is mainly used for installing the redirecting drive device. The two groups of mounting holes II 14 are rectangular and are respectively located at the rear ends of the two belt conveying cavities. They are mainly used for installing two belt redirecting rollers. The belt redirecting rollers can move back and forth in these mounting holes, and the power is provided by the tensioning device, facilitating the installation and adjustment of the conveyor belt.

[0021] The described scraper chain is a conventional chain. In the figure, it is a double-sided chain on the side. Medium double-chain, single middle-chain, etc. can also be selected according to the working conditions as needed. It mainly plays a role in driving the redirecting drive device.

[0022] The outer dimensions of the described belt redirecting roller are selected and designed according to the size of the scraper plate body; the surface characteristics of the belt redirecting roller are designed according to the conveyor belt material.

[0023] The described unloading device 4 is a wear-resistant steel plate with a special shape and is composed of a front fixing plate 20, a guiding surface 21, and a rear fixing plate 22. Among them, the fixing plate plays a role in fastening the unloading device. The front fixing plate is fixed on the outside to ensure that there is no obstruction inside the guiding surface; the guiding surface arranges the unloading angle and shape according to the conveyor belt speed, enabling the piled material on the conveyor belt to evenly enter the chain conveying area of the scraper plate body along the unloading device.

[0024] The described guiding surface 21 presents an irregular curved surface and is composed of the lower end 23 of the guiding surface and the upper end 24 of the guiding surface. The lower end of the guiding surface plays a role in curling up the material to avoid excessive reaction force on the material and hindering unloading; the upper end of the guiding surface bends inward to avoid excessive curling force of the material and throwing it out of the scraper plate body. Generally, it plays a role in reducing obstruction and increasing the unloading component force.

[0025] The described tensioning device is a hydraulic cylinder designed according to the working conditions. The cylinder barrel is connected to the scraper plate body, and the end of the piston rod is connected to the belt redirecting roller, facilitating the installation and replacement of the conveyor belt and having a certain buffering effect.

[0026] The described conveyor belt uses a belt with grooves or a more wear-resistant metal conveyor belt, etc. The material can be changed according to the working conditions.

[0027] The described redirecting drive device 7 includes: Bearing I, belt drive drum, Bearing II, drive sprocket, and chain redirecting drum. There are two Bearings I, located at both ends of the redirecting drive device respectively, and installed in the mounting hole I of the scraper plate body; There are two belt drive drums, located on both sides of the redirecting drive device, for driving the conveyor belt to run; There are two Bearings II, located between the belt drive drum and the chain redirecting drum respectively; The drive sprocket is located in the middle of the redirecting drive device, installed on the chain redirecting drum. In the figure, the sprocket matches the side double scraper chain, and the drive sprocket can be changed according to the form of the scraper chain, mainly playing the role of driving the redirecting drive device to rotate; The chain redirecting drum is located in the middle of the redirecting drive device, playing the role of redirecting the scraper chain and completing the circulation of the scraper chain. The redirecting drive device is both a redirecting device for chain conveying and a drive device for belt conveying, with coaxial transmission and integration of the two; A universal joint can also be used between redirecting and driving to facilitate the layout of different scraper plate planes.

[0028] The working principle and process of the present invention: The scraper conveyor is connected to the active loading mechanism combined with the chain belt through the pin hole II of the scraper plate body, with the drive motor as the power source. When the drive motor runs, the scraper chain moves backward, and the scraper chain drives the redirecting drive device to rotate through the drive sprocket. The belt drive drum in the redirecting drive device rotates simultaneously, driving the conveyor belt to move. At this time, the moving directions and speeds of the scraper chain and the conveyor belt are the same. The whole machine equipment advances forward, and the stockpile is passively loaded into the conveyor belt and the chain conveying area through the cutting edge of the scraper plate body. Among them, the stockpile entering the chain conveying area can be transported to the next station through the scraper conveyor; The stockpile entering the conveyor belt moves linearly backward along the conveyor belt. When it encounters the unloading device, it changes its moving direction and evenly enters the chain conveying area along the guiding surface of the unloading device, and then is transported to the next station through the scraper conveyor. The combination of chain conveying and belt conveying, with the belt conveying replacing the traditional star wheel and crab claw, has a wide range of adaptability to the width of the scraper plate and no dead zone for loading.

[0029] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

Claims

1. A chain belt combined with an active loading type loading mechanism, characterized in that: It includes a scraper plate body (1), a scraper chain (2), a belt redirecting roller (3), a discharging device (4), a tensioning device (5), a conveyor belt (6) and a redirecting drive device (7). The scraper plate body (1) is the main frame. The redirecting drive device (7) is installed at the front end of the scraper plate body (1). Belt redirecting rollers (3) are respectively installed on both sides of the rear end of the scraper plate body (1). Tensioning devices (5) are respectively installed on both sides inside the scraper plate body (1). The telescopic ends of the tensioning devices (5) are connected to the corresponding belt redirecting rollers (3). A scraper chain (2) is arranged on the upper surface of the middle part of the scraper plate body (1). The front end of the scraper chain (2) is connected to the redirecting drive device (7) fixed on the scraper plate body (1). The rear end of the scraper chain (2) passes through the scraper conveyor (26) and is connected to the drive motor (27). Both ends of the redirecting drive device (7) are respectively connected to the belt redirecting rollers (3) through two conveyor belts (6). Two discharging devices (4) are symmetrically arranged on the upper surfaces of both sides of the scraper plate body (1). The bottom of the discharging device (4) is in contact with the upper surface of the conveyor belt (6).

2. The chain belt combined with the active loading type loading mechanism according to claim 1, characterized in that: A pin hole I (8) connected to the oil cylinder of the whole machine equipment is arranged at the upper rear part of the scraper plate body (1). A pin hole II (9) connected to the main body of the whole machine equipment is arranged at the lower rear part of the scraper plate body (1). Belt conveying cavities (10) for arranging redirecting rollers, conveyor belts and tensioning devices are respectively arranged on both sides inside the scraper plate body (1). A chain conveying area (11) for laying the scraper chain (2) is arranged on the upper surface of the middle part of the scraper plate body (1). A scraper blade (12) is arranged at the front end of the scraper plate body (1). Mounting holes I (13) for installing the redirecting drive device (7) are arranged on both sides at the front end of the scraper plate body (1). Rectangular mounting holes II (14) for installing the belt redirecting rollers (3) are arranged on both sides at the rear end of the scraper plate body (1).

3. The chain belt combined with the active loading type loading mechanism according to claim 2, characterized in that: The redirecting drive device (7) includes a belt drive roller (16), a drive sprocket (18) and a chain redirecting roller (19) arranged coaxially. The chain redirecting roller (19) is arranged in the middle. Drive sprockets (18) are installed at both ends of the chain redirecting roller (19). Both ends of the chain redirecting roller (19) are connected to the belt drive roller (16) through bearings II (17). A bearing I (15) is arranged at the outer end of the belt drive roller (16). The bearing I (15) is installed in the mounting hole I (13).

4. The chain belt combined with the active loading type loading mechanism according to claim 3, characterized in that: The discharging device (4) includes a guiding surface (21). Front fixing plates (20) and rear fixing plates (22) for fixing are respectively arranged at both ends of the guiding surface (21). The guiding surface (21) is of an arc structure. The cross-section of the guiding surface (21) is a curved surface. The guiding surfaces (21) of the two groups of symmetrically arranged discharging devices (4) form a structure with a large inlet and a small outlet.

5. The chain belt combined with the active loading type loading mechanism according to claim 4, characterized in that: The upper end of the guiding surface (21) bends inwards. The contact surface between the lower end of the guiding surface (21) and the conveyor belt (6) is provided with an angle less than 90°.

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