Belt h-frame lifter of fully-mechanized coal mining machine

Abstract

The utility model discloses a kind of belt H frame hoisting devices of comprehensive excavator, comprising: pedestal, pedestal includes bottom disc and support cylinder, support cylinder is vertically fixedly connected to the top of bottom disc, the side wall of support cylinder is integrally connected with support block;Supporting rod, supporting rod is inserted and mounted in support cylinder from above support cylinder, supporting rod is evenly provided with several radial through supporting rod positioning pin hole from top to bottom, the top side wall of supporting rod is fixedly connected with support plate;Two positioning pegs, the length of positioning peg is greater than the inner diameter of support cylinder, one positioning peg is used to be inserted and mounted in any one positioning pin hole to adjust the depth of supporting rod inserted and mounted in support cylinder;Pressing rod assembly, pressing rod assembly is hinged with supporting rod by another positioning peg, and pressing rod assembly is hinged with support block, and pressing rod assembly is used to lift supporting rod upward when pressing downward according to lever principle, to realize the lifting of belt H frame. The device can efficiently, labor-saving lift and level belt H frame.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for roadheaders, and in particular to a belt-driven H-frame hoist for roadheaders. Background Technology

[0002] In underground coal mine tunneling, belt conveyors are crucial equipment for continuous muck removal, and their operational stability and efficiency directly affect the tunneling progress. However, in tunnels with small cross-sections and complex geological conditions, roadheaders need to perform long-term cutting operations. Coupled with dust suppression and water spraying, roadheaders easily generate large amounts of viscous, silted mud, commonly known as "thin mud," during the muck removal process. This silt accumulates along the belt conveyor, especially at the tail H-frame and bottom idler rollers, eventually completely burying the entire H-frame base and bottom idler rollers.

[0003] This situation leads to deterioration of equipment operation. The bottom rollers buried in silt become unable to rotate due to increased resistance, changing from rotational friction to sliding friction. This not only drastically accelerates the wear of the rollers themselves and the belt's rubber surface, causing premature damage to both, but also significantly increases the operating resistance of the conveyor belt and the motor load, resulting in wasted energy and potentially causing shutdowns due to overload. To ensure smooth production, the buried H-frames must be cleaned and leveled regularly. Traditional methods rely entirely on manual labor, typically requiring three or more workers. First, silt around the H-frame must be cleared using shovels and other tools. Then, a reliable anchor point is found above, a hand-operated hoist is attached, and the H-frame deeply embedded in the silt is forcibly pulled out using the hoist chain. The entire process is not only time-consuming and physically demanding for workers, but also lacks precision and makes rapid leveling difficult. Utility Model Content

[0004] Therefore, it is necessary to provide a belt H-frame lifter for roadheaders that can efficiently and labor-savingly lift and level the belt H-frame, addressing the aforementioned technical problems.

[0005] This utility model provides a belt-driven H-frame hoist for a roadheader, comprising: The base includes a chassis and a support cylinder. The support cylinder is vertically fixed to the top of the chassis, and a support block is integrally connected to the side wall of the support cylinder. The support rod is inserted into the support cylinder from the top. The support rod has several radially penetrating positioning pin holes evenly opened from top to bottom. A support plate is fixedly connected to the top side wall of the support rod. The support plate is used to directly contact the bottom of the crossbeam of the belt H-frame. Two positioning pins, the length of which is greater than the inner diameter of the support cylinder, are used to insert one positioning pin into any positioning pin hole to adjust the insertion depth of the support rod into the support cylinder, thereby realizing the adjustment of the support plate's support height for the belt H-frame. The pressure rod assembly is hinged to the support rod via another positioning pin and is also hinged to the support block. The pressure rod assembly is used to lift the support rod upward when pressed downward according to the lever principle, so as to lift the belt H-frame.

[0006] In one embodiment, the pressure bar assembly includes a cuboid pressure block, a pressure cylinder, a pressure bar, a first connecting rod and a second connecting rod arranged in parallel, and a third connecting rod and a fourth connecting rod arranged in parallel. The first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are all arranged perpendicular to the positioning pin hole. The left ends of the first and second connecting rods are hinged to the side wall of the support block, and the right ends are hinged to the front and rear side walls of the pressure block. The left ends of the third and fourth connecting rods respectively abut against the axial ends of the same positioning pin hole, and the right ends are perpendicularly fixed to the front end face of the pressure block. The left ends of the third and fourth links are provided with connecting holes, which are parallel to the axis of the positioning pin holes and are of equal size. The pressure cylinder is vertically fixed to the rear end face of the pressure block, and the pressure rod is inserted into the pressure cylinder.

[0007] In one embodiment, a triangular reinforcing plate is provided at the bottom of the support plate, and the two right-angled sidewalls of the reinforcing plate are fixedly connected to the support plate and the support rod, respectively.

[0008] In one embodiment, a number of pull ropes equal to the number of positioning pins are also provided; The reinforcing plate is fixedly connected by a pull ring. One end of the pull rope is fixedly connected to the pull ring, and the other end is fixedly connected to one end of the positioning pin.

[0009] In one embodiment, the top of the support plate is flush with the top of the support rod.

[0010] In one embodiment, a groove is provided at the top of the support rod, and an I-shaped slide rail is integrally connected to the side of the support plate facing the support rod. The support plate is slidably connected to the groove via the slide rail. The support plate is set vertically, and the length of the slide groove and the length of the slide rail are equal to the height of the support plate.

[0011] In one embodiment, the top of the support plate has an upward-facing U-shaped groove.

[0012] The beneficial effects of this utility model are as follows: By setting up a base, support rod, positioning pins, and pressure rod assembly, this utility model utilizes the lever principle to achieve labor-saving lifting of the belt H-frame, greatly reducing the labor intensity of workers and improving work efficiency. Multiple positioning pin holes are provided on the support rod, allowing for adjustment of the support height according to actual needs, making operation flexible and convenient. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the overall structure of the H-frame hoist of a roadheader provided in one embodiment of the present invention; Figure 2 for Figure 1 The main view; Figure 3 This is a schematic diagram showing the assembly relationship between the support plate and the support rod, provided for another embodiment of the present invention.

[0014] Explanation of reference numerals in the attached drawings: 100, base; 110, chassis; 120, support cylinder; 130, support block; 200, support rod; 210, positioning pin hole; 220, support plate; 221, slide rail; 222, slide groove; 300, positioning pin; 400, pressure block; 410, pressure cylinder; 420, pressure rod; 430, first connecting rod; 440, second connecting rod; 450, third connecting rod; 460, fourth connecting rod; 500, reinforcing plate; 600, pull rope; 700, pull ring; 800, U-shaped groove. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] It should be noted that in the description of this utility model, "upper," "lower," "top," "bottom," and orientation or positional relationship are based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In one embodiment, such as Figure 1 and Figure 2 As shown, the H-frame hoist of the roadheader belt in this embodiment includes a base 100, a support rod 200, two positioning pins 300, and a pressure rod assembly.

[0018] The base 100 includes a chassis 110 and a support cylinder 120. The chassis 110 is circular, which increases the contact area with silt or the bottom of the tunnel, preventing the base 100 from sinking due to excessive pressure during lifting. The support cylinder 120 is vertically fixed to the top of the chassis 110, and a support block 130 is integrally connected to the side wall of the support cylinder 120.

[0019] A support rod 200 is inserted into the support cylinder 120 from above. The support rod 200 has several radially penetrating positioning pin holes 210 evenly spaced from top to bottom. A support plate 220 is fixedly connected to the top side wall of the support rod 200, and the support plate 220 is used to directly contact the lower part of the crossbeam of the belt conveyor H-frame. The top of the support plate 220 is flush with the top of the support rod 200. A triangular reinforcing plate 500 is provided at the bottom of the support plate 220, and its two right-angled side walls are fixedly connected to the support plate 220 and the support rod 200, respectively. The reinforcing plate 500 at the bottom of the support plate 220 improves the stability and load-bearing capacity of the support.

[0020] The length of the positioning pin 300 is greater than the inner diameter of the support cylinder 120. One positioning pin 300 is used to insert into any positioning pin hole 210 to adjust the insertion depth of the support rod 200 into the support cylinder 120, thereby adjusting the support height of the belt H-frame provided by the support plate 220. When the belt H-frame presses down on the support plate 220, it causes the support rod 200 to move downward. After the positioning pin 300 is assembled into the positioning pin hole 210, the positioning pin 300 blocks the top of the positioning cylinder, restricting the downward movement of the support rod 200. The positioning pin 300 is inserted into different positioning pin holes 210 to adjust different support heights.

[0021] The pressure rod assembly is hinged to the support rod 200 via another positioning pin 300, and is also hinged to the support block 130. The pressure rod assembly is used to lift the support rod 200 upward when pressed downward according to the lever principle, thereby lifting the belt H-frame. The positioning pin 300, which is hinged to the pressure rod assembly, can also serve as a lifting pin.

[0022] This embodiment utilizes the lever principle by setting up a base 100, a support rod 200, a positioning pin 300, and a pressure rod assembly to achieve labor-saving lifting of the belt H-frame, greatly reducing the labor intensity of workers and improving work efficiency.

[0023] In one embodiment, the pressure bar assembly includes a cuboid pressure block 400, a pressure cylinder 410, a pressure bar 420, a first connecting rod 430 and a second connecting rod 440 arranged in parallel, and a third connecting rod 450 and a fourth connecting rod 460 arranged in parallel. The first connecting rod 430, the second connecting rod 440, the third connecting rod 450 and the fourth connecting rod 460 are all arranged perpendicularly to the positioning pin hole 210.

[0024] The left ends of the first link 430 and the second link 440 are both hinged to the side wall of the support block 130, and the right ends are both hinged to the front and rear side walls of the pressure block 400. The left ends of the third link 450 and the fourth link 460 respectively abut against the axial ends of the same positioning pin hole 210, and the right ends are both vertically fixedly connected to the front end face of the pressure block 400.

[0025] Both the third link 450 and the fourth link 460 have connecting holes at their left ends. These connecting holes are parallel to the axis of the positioning pin hole 210 and are of equal size. The pressure cylinder 410 is vertically fixed to the rear end face of the pressure block 400, and the pressure rod 420 is inserted into the pressure cylinder 410. Pressure rods 420 of different lengths can be replaced according to different tunnel widths.

[0026] In this embodiment, the pressure bar assembly adopts a multi-link structure, which enhances stability and makes the lifting process smooth and reliable.

[0027] In one embodiment, the H-frame hoist of the roadheader is also equipped with a number of pull ropes 600 equal to the number of positioning pins 300; the reinforcing plate 500 is fixedly connected to a pull ring 700, one end of the pull rope 600 is fixedly connected to the pull ring 700, and the other end is fixedly connected to one end of the positioning pin 300. The pull ropes 600 and pull ring 700 facilitate the storage and retrieval of the positioning pins 300 and prevent loss.

[0028] In one embodiment, such as Figure 3 As shown, a groove 222 is provided at the top of the support rod 200. An I-shaped slide rail 221 is integrally connected to the side of the support plate 220 facing the support rod 200. The support plate 220 is slidably connected to the groove 222 via the slide rail 221. The support plate 220 is vertically arranged, and the length of both the groove 222 and the slide rail 221 is equal to the height of the support plate 220. By using the groove 222 and the slide rail 221 to connect the support rod 200 and the support plate 220, different support plates 220 can be replaced according to different H-frames.

[0029] Specifically, the support plate 220 has an upward-facing U-shaped groove 800 on its top. The U-shaped groove 800 on the top of the support plate 220 can better accommodate the crossbeam of the belt H-frame and prevent slippage.

[0030] In this embodiment, when using the belt conveyor H-frame hoist, the entire hoist is first placed at the bottom of the roadway below the belt H-frame. Then, the support rod 200 is inserted into the support cylinder 120. To the required lifting height, a suitable support positioning pin hole 210 is selected, and a positioning pin 300 is inserted. The support plate 220 is aligned with the crossbeam of the belt H-frame. Next, the third connecting rod 450 and the fourth connecting rod 460 are hinged to the support rod 200 through another positioning pin hole 210 above the aforementioned support positioning pin hole 210, using another positioning pin 300 that serves as a lifting pin. Subsequently, the pressure rod 420 is pressed down, and through the lever action of the pressure rod assembly, the support rod 200 moves upward, thereby lifting the belt H-frame. After lifting to a suitable height, the position of the positioning pin can be adjusted to fix the height.

[0031] This utility model has a simple structure, is easy to operate, saves time and effort, and can quickly and effectively lift and level the belt H-frame, improving work efficiency and reducing labor intensity.

[0032] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A belt-driven H-frame hoist for a roadheader, characterized in that, include: The base (100) includes a chassis (110) and a support cylinder (120). The support cylinder (120) is vertically fixed to the top of the chassis (110), and a support block (130) is integrally connected to the side wall of the support cylinder (120). A support rod (200) is inserted into the support cylinder (120) from above. The support rod (200) has a plurality of radially penetrating positioning pin holes (210) evenly distributed from top to bottom. A support plate (220) is fixedly connected to the top side wall of the support rod (200). The support plate (220) is used to directly contact the lower part of the crossbeam of the belt H-frame. Two positioning pins (300) are provided, the length of which is greater than the inner diameter of the support cylinder (120). One of the positioning pins (300) is used to be inserted into any one of the positioning pin holes (210) to adjust the depth of the support rod (200) inserted into the support cylinder (120), thereby realizing the adjustment of the support plate (220) on the support height of the belt H-frame. The pressure rod assembly is hinged to the support rod (200) via another positioning pin (300) and is also hinged to the support block (130). The pressure rod assembly is used to lift the support rod (200) upward when pressed downward according to the lever principle, so as to lift the belt H-frame.

2. The belt conveyor H-frame hoist for a roadheader according to claim 1, characterized in that, The pressure bar assembly includes a cuboid pressure block (400), a pressure cylinder (410), a pressure bar (420), a first connecting rod (430) and a second connecting rod (440) arranged in parallel, and a third connecting rod (450) and a fourth connecting rod (460) arranged in parallel. The first connecting rod (430), the second connecting rod (440), the third connecting rod (450) and the fourth connecting rod (460) are all arranged perpendicular to the positioning pin hole (210). The left ends of the first connecting rod (430) and the second connecting rod (440) are both hinged to the side wall of the support block (130), and the right ends are both hinged to the front and rear side walls of the pressure block (400). The left ends of the third connecting rod (450) and the fourth connecting rod (460) respectively abut against the axial ends of the same positioning pin hole (210), and the right ends are both vertically fixedly connected to the front end face of the pressure block (400). The left ends of the third link (450) and the fourth link (460) are provided with connecting holes, which are parallel to the axis of the positioning pin hole (210) and are the same size. The pressure cylinder (410) is vertically fixed to the rear end face of the pressure block (400), and the pressure rod (420) is inserted into the pressure cylinder (410).

3. The belt conveyor H-frame hoist for a roadheader according to claim 2, characterized in that, The bottom of the support plate (220) is provided with a triangular reinforcing plate (500), and the two right-angled sidewalls of the reinforcing plate (500) are fixedly connected to the support plate (220) and the support rod (200) respectively.

4. The belt conveyor H-frame hoist for a roadheader according to claim 3, characterized in that, It is also equipped with pull ropes (600) in the same number as the positioning pins (300); The reinforcing plate (500) is fixedly connected to a pull ring (700), one end of the pull rope (600) is fixedly connected to the pull ring (700), and the other end is fixedly connected to one end of the positioning pin (300).

5. The belt conveyor H-frame hoist for a roadheader according to claim 4, characterized in that, The top of the support plate (220) is flush with the top of the support rod (200).

6. The belt conveyor H-frame hoist for a roadheader according to claim 5, characterized in that, The top of the support rod (200) is provided with a sliding groove (222), and the side of the support plate (220) facing the support rod (200) is integrally connected with an I-shaped slide rail (221). The support plate (220) is slidably connected to the sliding groove (222) through the slide rail (221). The support plate (220) is vertically arranged, and the length of the slide groove (222) and the length of the slide rail (221) are equal to the height of the support plate (220).

7. The belt conveyor H-frame hoist for a roadheader according to claim 6, characterized in that, The top of the support plate (220) has an upward-facing U-shaped groove (800).

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