A hydraulically height-adjustable cable trough and scraper conveyor

Abstract

The present invention relates to the technical field of coal mining and transportation equipment, and in particular to a hydraulically height-adjustable cable trough and a scraper conveyor, comprising a cable trough body, a connecting pin I, a hydraulic cylinder, a connecting plate assembly, a connecting pin II, a protective cover plate and an elastic limit pin. The present invention cooperates with the working face electro-hydraulic control to automatically adjust the height following the movement of the coal mining machine. While ensuring reasonable matching with the coal mining machine, the cable trough can automatically adjust the height following the machine to achieve its protection of the workers and equipment in the goaf, and can also effectively prevent the coal mining machine cable from overflowing from the cable trough to one side of the goaf, thereby improving the safety of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of coal seam mining and transportation equipment, in particular to a hydraulically height-adjustable cable trough and a scraper conveyor. Background Art

[0002] In the fully mechanized mining face with large and ultra-large mining heights, the cable trough of the scraper conveyor not only blocks the coal flow to the goaf and overflows, but also needs to prevent the coal blocks from the coal wall collapse from injuring the workers and related equipment. However, due to the restriction of the height of the shearer cable frame, it cannot effectively prevent the coal blocks from the large and ultra-large mining heights from splashing into the goaf, which seriously threatens the safety of the workers in the goaf and causes varying degrees of damage to the equipment. In addition, when the shearer cable is bent, the cable is easily overflowed from the cable trough to the goaf due to the limited height of the cable trough, which in turn affects the normal progress of coal mining. Therefore, the development of a cable trough that can automatically adjust the height with the movement of the coal shearer, while ensuring the reasonable matching with the coal shearer, automatically adjusts the height with the coal shearer to achieve its protection of the workers and equipment in the goaf, and at the same time prevents the coal shearer cable from overflowing from the cable trough to the goaf, has become one of the problems that need to be solved urgently in the current intelligent development process of scraper conveying equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulically height-adjustable cable trough and scraper conveyor, which can cooperate with the electro-hydraulic control of the working face to automatically adjust the height of the cable trough baffle following the movement of the coal mining machine, thereby ensuring reasonable matching with the coal mining machine. At the same time, the cable trough can be automatically heightened along with the machine to achieve its protection for the workers and equipment in the goaf, and can also effectively prevent the coal mining machine cable from overflowing from the inner side of the cable trough to the goaf.

[0004] The technical solution of the present invention is: a hydraulic height-adjustable cable trough and scraper conveyor, comprising a cable trough body, a connecting pin I, a hydraulic cylinder, a connecting plate assembly, a connecting pin II, a protective cover plate, and an elastic limit pin.

[0005] The connecting seat I of the cable trough body is hinged to the piston rod of the hydraulic cylinder by a connecting pin I, and the connecting seat II of the connecting plate assembly is hinged to the cylinder barrel of the hydraulic cylinder by a connecting pin II;

[0006] The limit plate I of the cable trough body is arranged on the left side of the baffle, and the vertical plate is arranged on the right side of the baffle, and a gap H is arranged between the three, and an open groove A is arranged on the vertical plate of the cable trough body;

[0007] The connecting plate of the connecting plate assembly is placed in the interval H of the cable trough body, and the limiting plate of the connecting plate assembly is nested in the open groove A on the vertical plate of the cable trough body;

[0008] The protective cover plate is vertically inserted under the lower plate of the connecting plate assembly, the support plate II of the cable trough body is inserted into the outer side of the protective cover plate, and an elastic limiting pin is arranged on the outer side of the protective cover plate;

[0009] Further, the hydraulic cylinders are arranged between the upper plate of the cable trough body and the lower plate of the connecting plate assembly, and the number of hydraulic cylinders arranged must be an even number and must be symmetrical about the center line L1 of the cable trough body;

[0010] Further, the number of semi-open grooves A provided on the vertical plate of the cable trough body must be an even number and must be symmetrical about the center line L1 of the cable trough body;

[0011] Further, the thickness of the connecting plate of the connecting plate assembly is δ1 < the interval H, and the thickness of the limiting plate is

[0012] δ2> thickness of the vertical plate δ3;

[0013] Furthermore, the connection seat I of the cable trough body is vertically welded to the upper plate and the vertical plate, and the number of the connection seats I must be an even number and symmetrical about the center line L1 of the cable trough body;

[0014] Furthermore, the connecting seat II of the connecting plate assembly is vertically welded to the lower plate and parallel to the limiting plate II. The number of the connecting seats II must be an even number and symmetrical about the center line L2 of the connecting plate assembly 4.

[0015] In addition, a scraper conveyor including the present invention is also provided.

[0016] The advantages of the present invention are: while ensuring reasonable matching with the coal mining machine, the cable trough can be automatically adjusted in height following the movement of the coal mining machine to protect the workers and equipment in the goaf, and can also effectively prevent the coal mining machine cable from slipping out from the inside of the cable trough.

[0017] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the hydraulically height-adjustable cable trough of the present invention;

[0019] Figure 2 It is a side view of the cable trough body of the present invention;

[0020] Figure 3 This is a front view of the cable trough body of the present invention;

[0021] Figure 4 It is a front view of the connecting plate assembly of the present invention;

[0022] Figure 5 A side view of a connecting plate assembly of the present invention;

[0023] Figure 6 This is a schematic diagram of the hydraulically height-adjustable cable trough in the raised state of the present invention.

[0024] Wherein: 1 cable trough body, 2 connecting pin Ⅰ, 3 hydraulic cylinder, 4 connecting plate assembly, 5 middle groove, 6 connecting bolt, 7 connecting pin Ⅱ, 8 protective cover plate, 9 elastic limit pin, 31 piston rod, 32 cylinder, 41 connecting pad, 42 limit plate Ⅱ, 43 connecting seat II, 44 lower plate, 101 baffle, 102 limit plate Ⅰ, 103 vertical plate, 104 support plate Ⅰ, 105 support plate Ⅱ, 106 connecting seat Ⅰ, 107 upper plate, 108 reinforcement plate, 109 guide tube, L1-center line of cable trough body, L2-center line of connecting plate assembly, A-semi-open groove on vertical plate, H-interval, δ1-thickness of connecting pad, δ1-thickness of limit plate 42, δ3-thickness of vertical plate 10. DETAILED DESCRIPTION

[0025] Depend on Figure 1 It can be seen that the present invention is a hydraulically height-adjustable cable trough, comprising a cable trough body 1, a connecting pin Ⅰ2, a hydraulic cylinder 3, a connecting plate assembly 4, a cotter pin 6, a connecting pin Ⅱ7, a protective cover plate 8, and an elastic limit pin 9. The connecting seat Ⅰ106 of the cable trough body 1 is hinged to the piston rod 31 of the hydraulic cylinder 3 by a connecting pin Ⅰ2, the connecting seat Ⅱ43 of the connecting plate assembly 4 is hinged to the cylinder barrel 32 of the hydraulic cylinder 3 by a connecting pin Ⅱ7, and the connecting plate assembly 4 is connected to the middle trough 5 by a connecting bolt 6.

[0026] Depend on Figures 2-3 It can be seen that the cable trough body 1 is welded by a baffle 101, a limit plate Ⅰ102, a vertical plate 103, a support plate Ⅰ104, a support plate Ⅱ105, a connection seat Ⅰ106, an upper plate 107, a reinforcing plate 108, and a guide tube 109. The limit plate Ⅰ102 of the cable trough body 1 is arranged on the left side of the baffle 101, and the vertical plate 103 is arranged on the right side of the baffle 101, and a gap H is arranged between the three. An open groove A is arranged on the vertical plate 103 of the cable trough body 1, and the connection seat Ⅰ106 is vertically welded to the upper plate 107 and the vertical plate 103. The number of the connection seats Ⅰ106 must be an even number and symmetrical about the center line L1 of the cable trough body 1.

[0027] Depend on Figures 4-5 It can be seen that the connecting plate assembly 4 is welded by a connecting pad 41, a limiting plate II 42, a connecting seat II 43, and a lower plate 44. The connecting seat II 44 is vertically welded to the lower plate 44 and parallel to the limiting plate II 42. The number of connecting seats II 43 must be an even number and symmetrical about the center line L2 of the connecting plate assembly 4.

[0028] As can be seen from 1 to 6, the connecting backing plate 41 of the connecting plate assembly 4 is placed in the interval H of the cable trough body 1, and the thickness δ1 of the connecting backing plate 41 of the connecting plate assembly 4 < H, ensuring the smooth installation. The thickness δ2 of the limiting plate 42 > the thickness δ3 of the vertical plate 103. The groove A of the vertical plate 103 and the limiting plate II 42 are nested with each other, restricting two degrees of freedom of the cable trough body 1, and only the vertical upward degree of freedom is reserved, which is controlled by the hydraulic cylinder 3. The hydraulic cylinder 3 is arranged between the upper plate 107 of the cable trough body 1 and the lower plate 44 of the connecting plate assembly 4. The even arrangement of the connecting seat I 106 and the connecting seat II 43 ensures that the hydraulic cylinders 3 are also arranged in even numbers and must be symmetric with respect to the center line L1 of the cable trough body 1 to ensure the force balance when the cable trough body 1 is lifted.

[0029] The working principle of the present invention is as follows: As Figure 6 shown, when the control valve group is opened, the piston rod 31 of the hydraulic cylinder 3 extends, lifting the cable trough body 1 to a suitable position. In cooperation with the electro-hydraulic control on the working surface, it can automatically adjust the height following the movement of the shearer to achieve the protection of the workers and equipment in the goaf. When the cable of the shearer needs to turn back, at this time, the cable trough body 1 is adjusted to a higher position, which can effectively prevent the shearer cable from overflowing from the cable trough into the goaf, improving the safety of the equipment operation.

[0030] In addition, it also includes any scraper conveyor provided with a cable trough with hydraulic height adjustment similar to that of the present invention on the scraper conveyor.

[0031] It can be understood that the above detailed description of the technical solution of the present invention with the help of the preferred embodiments is illustrative rather than formal restrictions. Those skilled in the art can modify the technical solution recorded in the embodiments or perform equivalent replacements for some of the technical features on the basis of reading the specification of the present invention. These modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the present invention.

Claims

1. A hydraulic height-adjustable cable trough, comprising a cable trough body (1), a connecting pin I (2), a hydraulic cylinder (3), a connecting plate assembly (4), a connecting pin II (7), a protective cover plate (8), and an elastic limit pin (9), characterized in that: The cable trough body (1) is welded together by a baffle (101), a limit plate I (102), a vertical plate (103), a support plate I (104), a support plate II (105), a connection seat I (106), an upper plate (107), a reinforcing plate (108), and a guide tube (109); the connection seat I (106) is vertically welded to the upper plate (107) and the vertical plate (103); the connection plate assembly (4) is welded together by a connection pad (41), a limit plate II (42), a connection seat II (43), and a lower plate (44); the connection seat II (43) is vertically welded to the lower plate (44) and parallel to the limit plate II (42); The connecting seat I (106) of the cable trough body (1) is hinged to the piston rod (31) of the hydraulic cylinder (3) by means of a connecting pin I (2), and the connecting seat II (43) of the connecting plate assembly (4) is hinged to the cylinder barrel (32) of the hydraulic cylinder (3) by means of a connecting pin II (7); The limit plate I (102) of the cable trough body (1) is arranged on the left side of the baffle (101), and the vertical plate (103) is arranged on the right side of the baffle (101), with a gap H between the three, and an open groove A is arranged on the vertical plate (103); The connecting plate (41) of the connecting plate assembly (4) is placed in the interval H of the cable trough body (1), and the limiting plate (42) of the connecting plate assembly (4) is nested in the open groove A on the vertical plate (103) of the cable trough body (1); The protective cover plate (8) is vertically inserted below the lower plate (44) of the connecting plate assembly (4), the support plate II (105) of the cable trough body (1) is inserted outside the protective cover plate (8), and an elastic limiting pin (9) is provided outside the protective cover plate (8).

2. The hydraulic height-adjustable cable trough according to claim 1, characterized in that: The hydraulic cylinders (3) are arranged between the upper plate (107) of the cable trough body (1) and the lower plate (44) of the connecting plate assembly (4). The number of hydraulic cylinders (3) arranged must be an even number and must be symmetrical about the center line L1 of the cable trough body (1).

3. The hydraulic height-adjustable cable trough according to claim 1, characterized in that: The number of semi-open grooves A provided on the vertical plate (103) of the cable trough body (1) must be an even number and must be symmetrical about the center line L1 of the cable trough body (1).

4. The hydraulic height-adjustable cable trough according to claim 1, characterized in that The thickness δ1 of the connecting pad (41) of the connecting plate assembly (4) is less than the interval H, and the thickness δ2 of the limiting plate (42) is greater than the thickness δ3 of the vertical plate (103).

5. The hydraulic height-adjustable cable trough according to claim 1, characterized in that: The connecting seat I (106) of the cable trough body (1) is vertically welded to the upper plate (107) and the vertical plate (103), and the number of the connecting seat I (106) must be an even number and symmetrical about the center line L1 of the cable trough body (1).

6. The hydraulic height-adjustable cable trough according to claim 1, characterized in that: The connecting seat II (43) of the connecting plate assembly (4) is vertically welded to the lower plate (44) and parallel to the limiting plate II (42). The number of connecting seats II (43) must be an even number and symmetrical about the center line L2 of the connecting plate assembly (4).

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