A wire rope bracket for inclined shaft hoisting system

Abstract

The utility model discloses a wire rope bracket of an inclined shaft hoisting system, comprising a bottom support frame fixed on the ground, characterized in that it also comprises a cross lifting mechanism, a buffer roller and a wire rope stabilizing mechanism; the cross lifting mechanism comprises a lifting frame and an outer cross arm and an inner cross arm connected in rotation in the middle, and the lifting frame is installed on the bottom support frame through the outer cross arm and the inner cross arm; buffer rollers are respectively installed at the front and rear ends of the lifting frame; a wire rope stabilizing mechanism is installed between the buffer rollers, and the wire rope stabilizing mechanism comprises a forward and reverse lead screw and two left and right buffer rollers. The utility model solves the problem of falling caused by loose wire rope by arranging the wire rope bracket at a suitable position between the sky sheave and the hoist drum; the spacing between the buffer rollers of the wire rope stabilizing mechanism is adjusted, and when the wire rope swings too much, rolling friction occurs between the wire rope and the buffer roller, thereby limiting the swing of the wire rope within a reasonable range.

Description

Technical Field

[0001] The utility model relates to the field of mining machinery, in particular to a steel wire rope bracket of an inclined shaft hoisting system. Background Art

[0002] The shaft inclination angle of the mine inclined shaft hoisting system is generally higher than 30°. Since the shaft inclination angle of the mine inclined shaft hoisting system is 25°, during the hoisting process, if the hoisting speed changes rapidly, such as acceleration or deceleration, the wire rope between the sheave and the drum will swing violently due to the inconsistent running speed caused by inertia. At the same time, in the initial stage of the bucket being lowered from the unloading position, the wire rope between the drum and the sheave will loosen and fall to the ground for a short time, which is prone to rope breakage. The existence of the above situation directly affects the safety of the bucket operation and the hoisting efficiency. The prior art is to set a deviation correction device and a deceleration protection device at the front end of the hoist, and adjust the deviation and looseness of the wire rope by monitoring the state of the wire rope. The device has a complex structure and high requirements for operators, which is not conducive to promotion and application. Utility Model Content

[0003] The utility model provides a wire rope bracket for an inclined shaft hoisting system, which aims to solve the problem of falling objects caused by loose wire ropes during hoisting operations of the inclined shaft hoisting system and the problem of violent swinging of the wire ropes when the hoisting speed changes rapidly.

[0004] The technical solution of this utility model is as follows:

[0005] A wire rope bracket of an inclined shaft hoisting system comprises a bottom support frame fixed on the ground, characterized in that it also comprises a cross lifting mechanism, a buffer drum and a wire rope stabilizing mechanism;

[0006] The cross lifting mechanism comprises a lifting frame and an outer cross arm and an inner cross arm connected in rotation in the middle, the lifting frame is installed on the bottom support frame through the outer cross arm and the inner cross arm, and buffer rollers are installed at the front and rear ends of the lifting frame respectively;

[0007] A wire rope stabilizing mechanism is installed between the buffer rollers, and the wire rope stabilizing mechanism includes a forward and reverse screw and two left and right buffer rollers; the forward and reverse screws are installed on the lifting frame by a rotating connection, and the forward and reverse screws are provided with two groups of left and right threads with opposite rotation directions, and the two groups of threads are respectively matched with the threads of two moving blocks slidably connected to the lifting frame, and the two buffer rollers are respectively vertically installed on the moving blocks on the corresponding sides.

[0008] As a further improvement, a first sliding mechanism is further provided under the lifting frame, the first sliding mechanism comprising a sliding frame, a first slider and a threaded rod rotatably connected to the sliding frame at both ends; the first slider is threadedly matched with the threaded rod, and the first slider 8 is slidably connected to the sliding frame; a second sliding mechanism is provided above the bottom support frame; the second sliding mechanism comprises a frame body, a second slider and a rod body connected to the frame body at both ends, and the second slider is slidably connected to the rod body;

[0009] The front end of the outer cross arm is hinged to the front end of the lifting frame, the rear end of the outer cross arm is rotationally connected to the second slider via an axis, the rear end of the inner cross arm is rotationally connected to the first slider via an axis, and the front end of the inner cross arm is rotationally connected to the front end of the bottom support frame.

[0010] As a further improvement, the buffer roller is wrapped with a flexible wear-resistant layer.

[0011] Compared with the prior art, the utility model has the following positive effects:

[0012] (1) By setting the wire rope bracket at a suitable position between the crown wheel and the hoist drum, the height of the wire rope bracket is adjusted to support the wire rope, thereby solving the problem of falling caused by loose wire rope.

[0013] (2) By adjusting the buffer rollers of the wire rope stabilizing mechanism to an appropriate spacing, when the wire rope swings too much, the wire rope will cause rolling friction with the buffer rollers, thereby limiting the swing of the wire rope to a reasonable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , schematic diagram of application of the utility model;

[0015] Figure 2 , structural diagram of the wire rope bracket of the utility model;

[0016] Figure 3 , a transverse cross-sectional view of the wire rope bracket of the utility model.

[0017] In the figure, 1. outer cross arm; 2. inner cross arm; 3. lifting frame; 4. bottom support frame; 5. first sliding mechanism; 6. first motor; 7. threaded rod; 8. first slider; 9. second sliding mechanism; 10. sliding frame; 11. second slider; 12. buffer roller; 13. buffer roller; 14. roller mounting bracket; 15. forward and reverse screw; 16. second motor; 17. hoist; 18. head pulley; 19. wire rope. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments.

[0019] like Figure 1 , Figure 2 and Figure 3 , a wire rope bracket of an inclined shaft hoisting system, comprising a bottom support frame 4 fixed on the ground, a cross lifting mechanism, the cross lifting mechanism comprising a lifting frame 3 and an outer cross arm 1 and an inner cross arm 2 connected in rotation in the middle, the lifting frame 3 is installed on the bottom support frame 4 through the outer cross arm 1 and the inner cross arm 2, the front end of the inner cross arm 2 is connected in rotation with the front end of the support frame 4, the lifting frame 3 is provided with two groups of roller brackets at the front and rear ends, the two groups of roller brackets are respectively provided with buffer rollers 12, and the buffer rollers 12 are wrapped with a flexible wear-resistant layer; the lifting frame 3 and the bottom support frame 4 are welded by angle steel; a first sliding mechanism 5 is provided below the lifting frame 3, and a second sliding mechanism 9 is provided above the bottom support frame 4. The first sliding mechanism 5 comprises a first motor 6, a sliding frame 10, a first slider 8 and a threaded rod 7 connected in rotation with the sliding frame 10; the first slider 8 cooperates with the threaded rod 7, the first slider 8 is connected in sliding connection with the sliding frame 10, and the right end of the threaded rod 7 is connected with the first motor 6. The second sliding mechanism 9 includes a frame, a second slider 11 and a rod body connected to the frame at both ends, the second slider 11 is slidably connected to the rod body, and the second slider 11 is slidably connected to the sliding frame 10. The front end of the outer cross arm 1 is hinged to the front end of the lifting frame 3, the rear end of the outer cross arm 1 is rotatably connected to the second slider 11 through an axis, and the rear end of the inner cross arm 2 is rotatably connected to the first slider 8 through an axis.

[0020] A wire rope stabilizing mechanism is installed between the buffer rollers 12 at the front and rear ends, and the wire rope stabilizing mechanism includes a forward and reverse screw 15 and two left and right buffer rollers 13. The forward and reverse screw 15 is installed on the lifting frame 3 by a rotating connection. The forward and reverse screw 15 is provided with two groups of left and right threads with opposite rotation directions. The two groups of threads are respectively matched with the threads of two moving blocks slidably connected to the lifting frame 3. The two buffer rollers 13 are respectively vertically installed on the moving blocks on the corresponding sides.

[0021] The wire rope stabilizing mechanism also includes a second motor 16 connected to the right end of the forward and reverse screw 15. The second motor 16 drives the forward and reverse screw 15 to rotate, driving the two buffer rollers 13 to move toward each other. The installation spacing of the two buffer rollers 13 is determined according to the width of the drum of the hoist 17, that is, the maximum offset of the wire rope during operation. The spacing of the buffer rollers 13 is adjusted to limit the swing amplitude of the wire rope, ensure that the wire rope runs within a safe range, and ensure the safety of the system.

[0022] When in use, the utility model is installed at a suitable position between the sheave 18 and the drum of the hoist 17. According to the actual working conditions on site, the cross-lifting mechanism is adjusted to change the height of the wire rope bracket, so that the buffer drum 12 is slightly lower than the connecting line of the tangent of the sheave 18 and the drum of the hoist 17 when the bucket is overloaded, and the spacing between the vertically installed buffer rollers 13 is adjusted. In this way, when the wire rope is loose, the support of the buffer drum 12 of the wire rope bracket to the wire rope can be guaranteed, and the wear of the wire rope on the buffer drum 12 can also be reduced; when the wire rope swings, the wire rope is restricted between the two buffer rollers 13, and rolling friction occurs between the wire rope and the buffer roller 13, thereby limiting the swing amplitude of the wire rope to a normal range. When the working conditions change, the wire rope bracket can also be adjusted in real time.

[0023] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A wire rope bracket for an inclined shaft hoisting system, comprising a bottom support frame (4) fixed on the ground, characterized in that: It also includes a cross lifting mechanism, a buffer drum (12) and a wire rope stabilizing mechanism; The cross lifting mechanism comprises a lifting frame (3) and an outer cross arm (1) and an inner cross arm (2) which are rotatably connected in the middle; the lifting frame (3) is mounted on a bottom support frame (4) via the outer cross arm (1) and the inner cross arm (2); and buffer rollers (12) are respectively mounted at the front and rear ends of the lifting frame (3); A wire rope stabilizing mechanism is installed between the buffer rollers (12), and the wire rope stabilizing mechanism includes a forward and reverse screw (15) and two left and right buffer rollers (13); the forward and reverse screw (15) is installed on the lifting frame (3) by a rotational connection, and the forward and reverse screw (15) is provided with two groups of left and right threads with opposite rotation directions, and the two groups of threads are respectively matched with the threads of two moving blocks slidably connected to the lifting frame (3), and the two buffer rollers (13) are respectively vertically installed on the moving blocks on the corresponding sides.

2. The wire rope bracket of the inclined shaft hoisting system according to claim 1, characterized in that: A first sliding mechanism (5) is also provided below the lifting frame (3), and the first sliding mechanism (5) comprises a sliding frame (10), a first slider (8), and a threaded rod (7) rotatably connected to the sliding frame (10) at both ends; the first slider (8) is threadedly matched with the threaded rod (7), and the first slider (8) is slidably connected to the sliding frame (10); a second sliding mechanism (9) is provided above the bottom support frame (4); the second sliding mechanism (9) comprises a frame body, a second slider (11), and a rod body connected to the frame body at both ends, and the second slider (11) is slidably connected to the rod body; The front end of the outer cross arm (1) is hinged to the front end of the lifting frame (3), the rear end of the outer cross arm (1) is rotatably connected to the second slider (11) via an axis, the rear end of the inner cross arm (2) is rotatably connected to the first slider (8) via an axis, and the front end of the inner cross arm (2) is rotatably connected to the front end of the bottom support frame (4).

3. The wire rope bracket of the inclined shaft hoisting system according to claim 1, characterized in that: The buffer roller (12) is wrapped with a flexible wear-resistant layer.

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