Lifting device for H-shaped belt frame of roadheader

Abstract

The invention discloses a fully-mechanized coal winning machine belt H frame lifting device which comprises a base, the base comprises a chassis and a supporting cylinder, the supporting cylinder is vertically and fixedly connected to the top of the chassis, and the side wall of the supporting cylinder is integrally connected with a supporting block; the supporting rod is inserted into the supporting cylinder from the upper portion of the supporting cylinder, a plurality of positioning pin holes penetrating through the supporting rod in the radial direction are evenly formed in the supporting rod from top to bottom, and a supporting plate is fixedly connected to the side wall of the top of the supporting rod; the length of the positioning plug pins is larger than the inner diameter of the supporting cylinder, and one positioning plug pin is used for being inserted into any positioning pin hole so as to adjust the depth of the supporting rod inserted into the supporting cylinder; and the pressing rod assembly is hinged to the supporting rod through the other positioning plug pin, the pressing rod assembly is hinged to the supporting block, and the pressing rod assembly is used for lifting the supporting rod upwards when pressing downwards according to the lever principle, so that lifting of the H-shaped belt frame is achieved. The device can efficiently lift and level the H-shaped belt frame in a labor-saving manner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of auxiliary equipment of fully-mechanized coal mining machine, and particularly relates to a belt H frame lifting device of fully-mechanized coal mining machine. BACKGROUND

[0002] In the process of roadway excavation in a coal mine, a belt conveyor is a key equipment for continuous residue discharge, and the stability and efficiency of the belt conveyor directly affect the excavation progress. However, in a roadway with a small cross section and complex geological conditions, the fully-mechanized coal mining machine needs to be operated for a long time, and in addition to dust removal and watering, a large amount of viscous and sludgy mud, commonly known as thin cargo, is easily generated in the process of cargo discharge of the fully-mechanized coal mining machine. The sludge is continuously accumulated along the belt conveyor, especially at the H frame and the bottom roller of the machine tail, and finally the entire H frame base and the bottom roller are completely buried.

[0003] The situation can cause deterioration of the equipment operation, and the bottom roller buried by the sludge cannot rotate due to increased resistance, and changes from rotational friction to sliding friction, which not only sharply increases the wear of the roller itself and the belt rubber surface, leading to early damage of the two, but also significantly increases the running resistance and motor load of the belt conveyor, resulting in waste of electric energy and even stoppage failure due to overload. In order to ensure smooth production, the buried H frame must be cleaned and lifted and leveled regularly. The traditional treatment method completely relies on manpower, and usually requires three or more workers to work together. First, the sludge around the H frame is cleaned with a shovel and other tools, and then reliable anchor points above are found, a hand-operated hoist is hung, and the H frame deeply buried in the sludge is pulled out by force through the hoist chain. The entire process not only consumes a long time and causes great physical exertion of the workers, but also has poor adjustment accuracy and is difficult to achieve rapid leveling. SUMMARY

[0004] Therefore, it is necessary to provide a belt H frame lifting device of a fully-mechanized coal mining machine, which can efficiently and labor-savingly lift and level the belt H frame.

[0005] The present application provides a belt H frame lifting device of a fully-mechanized coal mining machine, which comprises: a base, the base comprising a bottom disc and a support cylinder, the support cylinder being vertically and fixedly connected to the top of the bottom disc, and the side wall of the support cylinder being integrally connected with a support block; a support rod, the support rod being inserted into the support cylinder from above, a plurality of positioning pin holes penetrating the support rod in the radial direction being uniformly formed in the support rod from top to bottom, the top side wall of the support rod being fixedly connected with a support plate, and the support plate being used to directly contact the lower side of the cross beam of the belt H frame; two positioning pins, the length of the positioning pin being greater than the inner diameter of the support cylinder, and one positioning pin being used to be inserted into any one of the positioning pin holes to adjust the depth of the support rod inserted into the support cylinder, so as to adjust the support height of the support plate to the belt H frame; The pressing rod assembly is hinged with the supporting rod through another positioning pin, and is hinged with the supporting block, and is used for lifting the supporting rod upward when pressing downward according to the lever principle, so as to realize the lifting of the belt H frame.

[0006] In one of the embodiments, the pressing rod assembly comprises a cuboid pressing block, a pressing cylinder, a pressing rod, first and second parallel connecting rods, and third and fourth parallel connecting rods, and the first, second, third and fourth connecting rods are vertically arranged with the positioning pin hole; The left ends of the first and second connecting rods are hinged with the side wall of the supporting block, and the right ends are hinged with the front and rear side walls of the pressing block, and the left ends of the third and fourth connecting rods are respectively abutted on the axial two ends of the same positioning pin hole, and the right ends are vertically fixedly connected with the front end face of the pressing block; The left ends of the third and fourth connecting rods are provided with connecting holes, which are parallel to the axis of the positioning pin hole and equal in size; The pressing cylinder is vertically fixedly connected with the rear end face of the pressing block, and the pressing rod is inserted into the pressing cylinder.

[0007] In one of the embodiments, the bottom of the supporting plate is provided with a triangular reinforcing plate, and the two right-angle side walls of the reinforcing plate are respectively fixedly connected with the supporting plate and the supporting rod.

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

[0009] In one of the embodiments, the top of the supporting plate is flush with the top of the supporting rod.

[0010] In one of the embodiments, the top of the supporting rod is provided with a sliding groove, and the side of the supporting plate facing the supporting rod is integrally connected with an I-shaped sliding rail, and the supporting plate is slidingly connected with the sliding groove through the sliding rail. The supporting plate is vertically arranged, and the length of the sliding groove and the length of the sliding rail are equal to the height of the supporting plate.

[0011] In one of the embodiments, the top of the supporting plate is provided with a U-shaped groove with an upward opening.

[0012] The beneficial effects of the present application are that: through the setting of the base, the supporting rod, the positioning pin and the pressing rod assembly, the lever principle is used to realize the labor-saving lifting of the belt H frame, greatly reducing the labor intensity of workers and improving the work efficiency. The supporting rod is provided with a plurality of positioning pin holes, the supporting height can be adjusted according to actual needs, and the operation is flexible and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1The overall structure schematic diagram of the belt H frame lifter of the fully-mechanized coal mining machine provided by one embodiment of the present application is shown in the figure. Figure 2 The front view of the present application is shown in the figure. Figure 1 Figure 3 The assembly relationship schematic diagram of the support plate and the support rod provided by another embodiment of the present application is shown in the figure.

[0014] The figure caption is as follows: 100, base; 110, bottom disc; 120, support cylinder; 130, support block; 200, support rod; 210, positioning pin hole; 220, support plate; 221, sliding rail; 222, sliding groove; 300, positioning pin; 400, pressing block; 410, pressing cylinder; 420, pressing 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 DESCRIPTION

[0015] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0016] It should be noted that in the description of the present application, "up", "down", "top", "bottom", orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. Figure 1 It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0017] In one embodiment, as shown in the figures, the belt H frame lifter of the fully-mechanized coal mining machine of the present embodiment comprises a base 100, a support rod 200, two positioning pins 300 and a pressing rod assembly. Figure 1 Figure 2 The base 100 comprises a bottom disc 110 and a support cylinder 120, the bottom disc 110 is a circular plate, which can increase the contact area with the sludge or the bottom of the roadway, prevent the pressure from being too large during lifting, and prevent the base 100 from sinking.

[0018] The support cylinder 120 is vertically fixedly connected to the top of the bottom disc 110, and the side wall of the support cylinder 120 is integrally connected with a support block 130.

[0019] ​​The support rod 200 is inserted into the support cylinder 120 from above the support cylinder 120, and the support rod 200 is uniformly provided with a plurality of positioning pin holes 210 penetrating the support rod 200 in the radial direction from top to bottom. The top side wall of the support rod 200 is fixedly connected with a support plate 220, and the support plate 220 is used to directly contact the lower side of the cross beam of the belt H frame. The top of the support plate 220 is flush with the top of the support rod 200, and the bottom of the support plate 220 is provided with a triangular reinforcing plate 500, and the two right-angle side walls of the reinforcing plate 500 are fixedly connected with the support plate 220 and the support rod 200, respectively. The reinforcing plate 500 is arranged at the bottom of the support plate 220, thereby improving 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, and one positioning pin 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 height of the support plate 220 to the belt H frame. The belt H frame presses the support plate 220 downward, and drives the support rod 200 to move downward. After the positioning pin 300 is assembled into the positioning pin hole 210, the positioning pin 300 is transversely arranged at the top of the positioning cylinder, thereby limiting 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 hingedly connected with the support rod 200 through another positioning pin 300, and the pressure rod assembly is hingedly connected with the support block 130. The pressure rod assembly is used to lift the support rod 200 upward according to the lever principle when the pressure rod assembly is pressed downward, so as to realize the lifting of the belt H frame. The positioning pin 300 hingedly connected with the pressure rod assembly can be used as a lifting pin.

[0022] The base 100, the support rod 200, the positioning pin 300 and the pressure rod assembly are arranged in the embodiment, and the lever principle is used to realize the labor-saving lifting of the belt H frame, thereby greatly reducing the labor intensity of workers and improving the work efficiency.

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

[0024] The left ends of the first and second connecting rods 430 and 440 are hingedly connected with the side wall of the support block 130, and the right ends thereof are hingedly connected with the front and rear side walls of the pressure block 400. The left ends of the third and fourth connecting rods 450 and 460 abut against the axial ends of the same positioning pin hole 210, and the right ends thereof are perpendicularly fixedly connected with the front end face of the pressure block 400.

[0025] The left end of the third connecting rod 450 and the fourth connecting rod 460 is provided with a connecting hole, which is parallel to the axis of the positioning pin hole 210 and equal in size; the pressure cylinder 410 is vertically fixedly connected to the rear end surface of the pressing block 400, and the pressure rod 420 is inserted into the pressure cylinder 410. Different lengths of the pressure rod 420 can be replaced according to different widths of the tunnel.

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

[0027] In one of the embodiments, the belt H frame lifter of the shearer is also provided with a number of pull ropes 600 equal to the number of the positioning pins 300; the reinforcing plate 500 is fixedly connected with a pull ring 700, one end of the pull rope 600 is fixedly connected with the pull ring 700, and the other end is fixedly connected with one end of the positioning pin 300. The pull rope 600 and the pull ring 700 are arranged to facilitate the storage and use of the positioning pin 300 and prevent loss.

[0028] In one of the embodiments, as shown in Figure 3 The top of the support rod 200 is provided with a sliding groove 222, the side of the support plate 220 facing the support rod 200 is integrally connected with a I-shaped sliding rail 221, and the support plate 220 is slidingly connected to the sliding groove 222 through the sliding rail 221; the support plate 220 is vertically arranged, and the length of the sliding groove 222 and the length of the sliding rail 221 are equal to the height of the support plate 220. The support rod 200 and the support plate 220 are connected in the manner of the sliding groove 222 and the sliding rail 221, and different support plates 220 can be replaced according to different H frames.

[0029] Specifically, the top of the support plate 220 is provided with a U-shaped groove 800 with an upward opening. The U-shaped groove 800 arranged on the top of the support plate 220 can better accommodate the cross beam of the belt H frame and prevent slipping.

[0030] When the belt H frame lifter of the shearer is used, the entire lifter 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, and according to the height of the lifting required, a suitable support positioning pin hole 210 is selected and a positioning pin 300 is inserted. The support plate 220 is aligned with the cross beam of the belt H frame. Then, the third connecting rod 450 and the fourth connecting rod 460 are hinged with the support rod 200 through another positioning pin 300 as a lifting pin in a positioning pin hole 210 above the support positioning pin hole 210. Subsequently, the pressure rod 420 is pressed downward, and through the lever action of the pressure rod assembly, the support rod 200 moves upward, thereby lifting the belt H frame. After being lifted to the appropriate height, the position of the positioning pin can be adjusted to fix the height.

[0031] The present application has the advantages of simple structure, convenient operation, time and labor saving, and can quickly and effectively lift and level the belt H frame, improve the work efficiency, and reduce the labor intensity.

[0032] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A belt H-frame lifter of a fully-mechanized coal mining face, characterized in that, The utility model relates to a kind of height-adjustable belt H frame support, including: Base (100), the base (100) includes bottom dish (110) and support cylinder (120), the support cylinder (120) is vertically fixedly connected to the top of the bottom dish (110), the side wall of the support cylinder (120) is integrally connected with support block (130); Supporting rod (200), the supporting rod (200) is inserted from above support cylinder (120) in support cylinder (120), the supporting rod (200) is evenly provided with several radial through supporting rod (200) from top to bottom positioning pin hole (210), the top side wall of the supporting rod (200) is fixedly connected with support plate (220), and the support plate (220) is used to directly contact with the beam below belt H frame support; Two positioning pins (300), the length of the positioning pin (300) is greater than the inner diameter of support cylinder (120), one positioning pin (300) is used to be inserted in any one positioning pin hole (210) to adjust the depth of supporting rod (200) inserted in support cylinder (120), to realize the adjustment of support plate (220) to belt H frame support height; Pressing rod assembly, the pressing rod assembly is hinged with the supporting rod (200) by another positioning pin (300), and the pressing rod assembly is hinged with the support block (130), and the pressing rod assembly is used to lift supporting rod (200) when pressing down according to lever principle, to realize the lifting of belt H frame.

2. The belt H frame lifter of the face conveyor according to claim 1, characterized in that, The pressing rod assembly includes cuboid pressing block (400), pressing cylinder (410), pressing rod (420), first connecting rod (430) and second connecting rod (440) arranged in parallel, third connecting rod (450) and fourth connecting rod (460) arranged in parallel, the first connecting rod (430), second connecting rod (440), third connecting rod (450) and fourth connecting rod (460) are vertically arranged with the positioning pin hole (210); The left end of the first connecting rod (430) and the second connecting rod (440) is hinged with the side wall of the support block (130), and the right end is hinged with the front and rear side wall of the pressing block (400), and the left end of the third connecting rod (450) and the fourth connecting rod (460) is respectively abutted on the axial two ends of the same positioning pin hole (210), and the right end is vertically fixedly connected with the front end surface of the pressing block (400); The left end of the third connecting rod (450) and the fourth connecting rod (460) is provided with connecting hole, and the connecting hole is parallel with the axis of the positioning pin hole (210) and equal in size; The pressing cylinder (410) is vertically fixedly connected to the rear end surface of the pressing block (400), and the pressing rod (420) is inserted into the pressing cylinder (410).

3. The belt H frame lifter of the face conveyor according to claim 2, characterized in that, The bottom of the support plate (220) is provided with triangular reinforcing plate (500), and the two right-angle side walls of the reinforcing plate (500) are fixedly connected with the support plate (220) and the support rod (200) respectively.

4. The belt H frame lifter of the face conveyor according to claim 3, characterized in that, An equal number of pull ropes (600) as the positioning pins (300) are also provided. The reinforcing plate (500) is fixedly connected with a pull ring (700), one end of the pull rope (600) is fixedly connected with the pull ring (700), and the other end is fixedly connected with one end of the positioning bolt (300).

5. The belt H frame lifter of the face conveyor 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 H frame lifter of the face conveyor 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 sliding rail (221), and the support plate (220) is slidingly connected to the sliding groove (222) through the sliding rail (221). The support plate (220) is vertically arranged, and the length of the sliding groove (222) and the length of the sliding rail (221) are equal to the height of the support plate (220).

7. The belt H frame lifter of the face conveyor according to claim 6, characterized in that, The top of the support plate (220) is provided with a U-shaped groove (800) with an upward opening.

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