Inclination test device for coal mining machine

Abstract

The invention discloses a coal mining machine inclination test device, and belongs to the technical field of coal mining machines. A coal mining machine inclination test device is characterized in that the coal mining machine inclination test device comprises a climbing test bench which comprises a table board with a variable inclination angle, and the table board is used for bearing a coal mining machine to carry out a climbing test; the table top is provided with two opposite end parts along the climbing direction of the coal mining machine, and the two end parts are respectively the top part and the bottom part of the test bed; the traction equipment is arranged above the top of the test bed; one end of the traction rope is connected with the traction equipment, and the other end of the traction rope is connected with the coal mining machine borne on the table top; and when the coal mining machine is subjected to a climbing test, the traction rope is kept in a slightly tight state. According to the coal mining machine inclination test device, the traction equipment is arranged in the coal mining machine inclination test device, so that when the coal mining machine is subjected to braking test on the climbing test bed and braking torque is insufficient, the coal mining machine can be prevented from sliding down through the traction equipment, and test safety risks are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of coal shearers, in particular to a coal shearer tilt test device. Background Art

[0002] With the development of the coal industry, domestic coal mines have become virtually all mechanized, and the automation and intelligence levels of shearers have significantly improved. At the same time, simple, shallow coal resources are decreasing year by year, resulting in an increasing number of inclined and steeply inclined working faces. Steeply inclined coal seams are prevalent in Sichuan, Huainan, and Gansu. Sichuan's Lvshuidong Coal Mine has already constructed steeply inclined working faces, averaging 60° and exceeding 65° in some areas. These complex geological conditions present a series of safety production challenges, creating an urgent need for shearers adapted to these inclined conditions.

[0003] Currently, there are no safety testing methods, verification methods, or relevant standards for shearers operating at high inclination angles, either domestically or internationally. During tests simulating high-inclination conditions, shearers may face challenges with insufficient gradeability or braking torque, leading to accidents such as shearer slippage. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems and provide a coal mining machine tilt test device for preventing the occurrence of coal mining machine sliding accidents during the test process and improving the safety of the test system.

[0005] The object of the present invention is achieved like this:

[0006] A coal mining machine tilt test device, comprising:

[0007] A climbing test bench includes a table with a variable inclination angle, the table being used to support a coal mining machine for a climbing test; the table having two opposite ends along the climbing direction of the coal mining machine, which are the top and bottom of the test bench respectively;

[0008] a traction device, disposed above the top of the test bench;

[0009] A traction rope is connected to the traction device at one end and to the coal mining machine supported on the table at the other end; and when the coal mining machine performs a climbing test, the traction rope is kept in a slightly tight state.

[0010] The test bench further comprises a fixed pulley and a movable pulley assembly; the fixed pulley is arranged on the top of the test bench; the movable pulley assembly is arranged below the fixed pulley and is arranged to be movable along the table surface;

[0011] The traction rope passes through the fixed pulley and the movable pulley group in sequence and is connected to the coal mining machine carried on the table.

[0012] Wherein, it also includes a movable pulley rolling frame and a small roller; the small roller is connected to the pulley rolling frame, and the pulley rolling frame is in rolling connection with the movable pulley group;

[0013] The small roller rolls along the surface of the table to drive the pulley rolling frame and the movable pulley group to move along the table.

[0014] Wherein, a tension sensor is provided on the traction rope, which is used to measure the force condition of the traction rope and also to receive the measurement value of the tension sensor.

[0015] The hill climbing test bench further includes a control module, which is electrically connected to the traction device.

[0016] Wherein, the traction equipment is a winch.

[0017] Wherein, the traction rope is a steel wire rope.

[0018] The beneficial effect of the present invention is that by arranging a traction device in the coal mining machine tilt test device, when the coal mining machine is tested on a climbing test bench and the braking torque is insufficient, the traction device can be used to prevent the coal mining machine from sliding down, thereby avoiding the risk of test safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a structural diagram of an embodiment of a coal mining machine tilt test device of the present invention.

[0020] Description of reference numerals:

[0021] 1- Hill climbing test bench;

[0022] 2-coal mining machine;

[0023] 3- traction rope;

[0024] 4-movable pulley set;

[0025] 5-movable pulley rolling frame;

[0026] 6- small roller;

[0027] 7-fixed pulley;

[0028] 8-Traction equipment. DETAILED DESCRIPTION

[0029] Various embodiments of the present invention will be described with reference to the accompanying drawings. Elements with similar structures or functions will be represented by the same reference numerals throughout the specification and drawings. It should be understood that the drawings are provided for reference and illustration purposes only and are not intended to limit the present invention. The dimensions shown in the drawings are provided for clarity of description only and are not intended to limit proportional relationships, exhaustive description of the present invention, or the scope of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] The invention provides a coal mining machine tilt test device.

[0032] In one embodiment, if Figure 1 As shown, a coal mining machine tilt test device includes a climbing test bench 1, a traction device 8, a traction rope 3 and a tension sensor (not shown in the figure).

[0033] The climbing test bench 1 has a table with a variable inclination angle, which is used to support the coal mining machine 2 for climbing tests. Specifically, a rotating fulcrum can be set at the bottom of the table, and a support rod can be used. The two ends of the support rod are respectively rotatably connected to the bottom of the table and the fixed surface. By rotating the support rod, the inclination angle of the table can be conveniently changed. The table has two opposite ends along the direction of the coal mining machine 2 climbing, which are the top and bottom of the test bench. The traction device 8 is arranged above the top of the test bench. One end of the traction rope 3 is connected to the traction device 8, and the other end of the traction rope 3 is connected to the coal mining machine 2 supported on the table. A tension sensor is arranged on the traction rope 3 to measure the force applied to the traction rope 3. To simplify the device, the traction device 8 can be directly used as a winch, and the traction rope 3 can be directly used as a wire rope.

[0034] When the shearer 2 is performing a climbing test, the traction rope 3 is kept in a slightly tightened state. The slightly tightened state is achieved as follows:

[0035] According to the traction speed set by the coal mining machine 2, a drum speed that matches the traction speed is instructed to the winch. The matching relationship is n=v / (π(D+2md)), where n is the drum speed of the winch, v is the traction speed of the coal mining machine 2, D is the drum diameter, d is the wire rope diameter, and m is the number of wire rope windings.

[0036] To prevent the traction rope 3 from swinging, a fixed pulley 7, a movable pulley rolling frame 5, a small roller 6, and a movable pulley block 4 are installed. Specifically, the fixed pulley 7 is mounted on the top of the test bench via a pulley mounting bracket. The small roller 6 is connected to the pulley rolling frame, which is in rolling connection with the movable pulley block 4. The three components form a single unit and are mounted below the fixed pulley 7. The small roller 6 rolls against the surface of the table, driving the pulley rolling frame 5 and the movable pulley block 4 along the table. The traction rope 3 passes through the fixed pulley 7 and the movable pulley block 4 in sequence before being connected to the coal mining machine 2 supported on the table.

[0037] In order to improve the automation of the entire experimental device, the hill climbing test bench 1 further includes a control module (not shown in the figure). The control module is electrically connected to the traction device 8 and is also used to receive the measurement value of the tension sensor.

[0038] When shearer 2 is performing a climbing test on the climbing test apparatus described in this embodiment, if the traction force of shearer 2 is insufficient and the shearer 2 cannot climb, it will control itself to slow down or even slide down. At this time, the force on the wire rope (traction rope 3) changes. This force change can be detected by the force value measured by the tension sensor. After receiving this information, the control module can issue a stop test command according to the situation and control shearer 2 to stop. After receiving the stop command, shearer 2 activates the brake. If the braking torque is insufficient, shearer 2 will slide down on the climbing test bench 1, causing the force on the wire rope to increase. That is, the force value measured by the tension sensor received by the control module increases. At this time, the control module can command the hoist to engage the brake to prevent shearer 2 from sliding down, avoiding safety risks in the test.

[0039] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A coal mining machine tilt test device, characterized in that: include: A climbing test bench, comprising a table with a variable inclination angle, the table being used to carry a coal mining machine for a climbing test; The table has two opposite ends along the direction of the coal mining machine climbing, which are the top and bottom of the test bench respectively; a traction device, disposed above the top of the test bench; A traction rope is connected to the traction device at one end and to the coal mining machine supported on the table at the other end; and when the coal mining machine performs a climbing test, the traction rope is kept in a slightly tight state.

2. The coal mining machine tilt test device according to claim 1, characterized in that: It also includes a fixed pulley and a movable pulley group; the fixed pulley is arranged on the top of the test bench; the movable pulley group is arranged below the fixed pulley and is arranged to be movable along the table; The traction rope passes through the fixed pulley and the movable pulley group in sequence and is connected to the coal mining machine carried on the table.

3. The coal mining machine tilt test device according to claim 1, characterized in that: It also includes a movable pulley rolling frame and a small roller; the small roller is connected to the pulley rolling frame, and the pulley rolling frame is in rolling connection with the movable pulley group; The small roller rolls along the surface of the table to drive the pulley rolling frame and the movable pulley group to move along the table.

4. The coal mining machine tilt test device according to any one of claims 1 to 3, characterized in that: The traction rope is provided with a tension sensor for measuring the stress condition of the traction rope.

5. The coal mining machine tilt test device according to claim 4, characterized in that: The hill climbing test bench further includes a control module, which is electrically connected to the traction device and is further configured to receive measurement values ​​of the tension sensor.

6. The coal mining machine tilt test device according to claim 5, characterized in that: The traction equipment is a winch.

7. The coal mining machine tilt test device according to claim 5, characterized in that: The traction rope is a steel wire rope.

Images