Simple measuring device for empty height of draw shaft in mining area

Abstract

The utility model discloses a mining area draw shaft empty height simple measuring device which comprises a measuring trolley, a cable winding device support and a balancing weight are installed on the measuring trolley, a cable winding device is installed on the top of the cable winding device support, a measuring rope is wound on the cable winding device, and a measuring rope blocking device is installed at a measuring rope outlet of the cable winding device. Measuring supporting rods are hinged to the left and right sides of the cable winder, one end of each measuring supporting rod is connected with a rod piece fixing sleeve on the measuring trolley, and the other end is rotationally connected with a guide pulley; a plumb bob is fixed at the end part of the measuring rope, and one end, fixed with the plumb bob, of the measuring rope bypasses the guide pulley and vertically enters the draw shaft downwards during use. According to the device, the safety risks of personnel and equipment in the draw shaft empty height measuring operation process are effectively reduced, the device has good adaptability to the mining area draw shaft environment, the measuring method is simple and convenient, operability is high, and the device is small, exquisite, flexible and convenient to recycle.

Description

Technical Field

[0001] The utility model relates to a measuring device, in particular to a simple measuring device for the height of a chute in a mining area. Background Art

[0002] Mine chutes are crucial vertical transportation channels in high-altitude mines, significantly impacting mine operations. Large open-pit mines typically have two to three production steps operating simultaneously, with one chute often serving as the ore filling station for two steps. During production, chute height measurements are routinely required for measuring shift output, chute inspections, and safe chute operation monitoring. Routine chute discharges in mining areas generate significant dust and poor visibility at the wellhead, rendering some existing infrared ranging equipment inadequate. Furthermore, ore accumulation in the chute often causes the mine surface to suddenly drop, generating intense, transient airflow that poses significant safety risks to personnel and equipment performing wellhead measurements. Utility Model Content

[0003] In view of the problems existing in the above-mentioned background technology, the utility model discloses a simple device for measuring the height of a chute in a mining area, in order to solve the safety hazards of measuring the actual height of a chute.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A simple device for measuring the height of a chute in a mining area comprises a measuring trolley, a cable reel bracket and a counterweight are installed on the measuring trolley, a cable reel is installed on the top of the cable reel bracket, a measuring rope is wound around the cable reel, and a measuring rope stopper is installed at the measuring rope outlet of the cable reel; measuring support rods are hinged on the left and right sides of the cable reel, one end of the measuring support rod is connected to the rod fixing sleeve on the measuring trolley, and the other end is rotatably connected to a guide pulley; a plumb bob is fixed at the end of the measuring rope, and when in use, the end of the measuring rope with the plumb bob fixed on it passes around the guide pulley and vertically downwards into the chute.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] 1. The device is simple to make, the measuring method is simple and the operability is strong.

[0008] 2. The device uses a movable measuring trolley and a retractable rod. The shortest rod can be retracted to 1.6m. The device is small, flexible and easy to recycle.

[0009] 3. The measuring rod adopts a stainless steel telescopic rod, and the length of the locking rod can be adjusted arbitrarily to adapt to the measurement of the height of chutes of different diameters. By adjusting the length of the rod, it can ensure that the plumb bob is located on the center line of the chute shaft, thereby accurately measuring the height of the chute.

[0010] 4. A measuring rope pay-out buckle is installed at the opening of the cable reel casing. When the plumb bob falls to the chute surface, the measuring rope can be clamped, making it easy to read the measuring rope data.

[0011] 5. The device uses a forward-extending support rod to ensure that the plumb bob is located on the center line of the chute shaft, effectively solving the measurement deviation caused by large amounts of dust at the chute mouth. It can adapt well to the mining environment and avoid the safety risks of personnel and equipment caused by instantaneous airflow changes in the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] In the figure, 1- measuring trolley, 2- counterweight, 3- cable winder bracket, 4- handle, 5- rod fixing sleeve, 6- measuring support rod, 7- cable winder, 8- measuring rope blocker, 9- measuring rope, 10- guide pulley, 11- bobbin, 12- chute. DETAILED DESCRIPTION

[0014] The present invention will be further explained below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, a simple measuring device for the height of a chute in a mining area is provided, comprising a measuring trolley 1, a cable reel bracket 3 and a counterweight 2 are installed on the measuring trolley 1, a cable reel 7 is installed on the top of the cable reel bracket 3, a measuring rope 9 is wound on the cable reel 7, and a measuring rope stopper 8 is installed at the measuring rope outlet of the cable reel 7; measuring support rods 6 are hinged on the left and right sides of the cable reel 7, one end of the measuring support rod 6 is inserted into the rod fixing sleeve 5 on the measuring trolley 1, and the other end is rotatably connected to the guide pulley 10; a plumb bob 11 is fixed to the end of the measuring rope 9, and when in use, the end of the measuring rope 9 with the plumb bob 11 fixed thereon passes around the guide pulley 10 vertically downward into the chute; a handle 4 is also installed on the back of the measuring trolley 1.

[0016] Description of each component:

[0017] Measuring trolley 1: 2000mm long * 800mm wide, with cross bars installed at the frame connection and the cable winder triangular support bar connection, using φ14mm ordinary round steel for welding;

[0018] Counterweight 2: Ordinary iron steel plate with a length of 820mm, a width of 400mm, and a thickness of 50mm, stacked and placed on the measuring trolley 1;

[0019] Cable winder bracket 3: a triangular support welded from φ14mm ordinary round steel;

[0020] Rod fixing sleeve 5: Steel sleeve, after the rod is inserted, it can be fixed by pin connection;

[0021] Measuring support rod 6: The rod is a thickened stainless steel telescopic rod with any locking length, with a total length of 9m (6 sections) and a length of 1.6m after retraction;

[0022] Cable reel 7: Its outer diameter is 400mm and inner diameter is 250mm; it includes a housing and a drum, on which a nylon measuring rope is wound, and a rotating handle is connected to one side of the cable reel;

[0023] Measuring rope stopper 8: Similar to a tape measure stopper, when the plumb bob at the end of the measuring rope falls to the mine face, it is pressed and locked to effectively stop the measuring rope so that the measurement reading can be taken;

[0024] Measuring rope 9: 100m long, φ2.0mm diameter nylon measuring rope, marked with scale; the zero point of the measuring rope is tied to the pendant and the end point is tied to the reel;

[0025] Guide pulley 10: pulley with a diameter of 100 mm;

[0026] Bob 11: solid bob (preferably alloy steel), weight 750g, diameter φ58mm, length 103mm.

[0027] The working principle of this utility model is as follows:

[0028] To measure the chute height, push the measuring device to a safe distance from the edge of the chute. Extend the measuring support rod 6 to directly above the chute 12. Simultaneously, rotate the cable reel 7 to pay out the measuring rope 9 until the plumb bob 11 contacts the chute surface. Press the button on the measuring rope stop 8 to secure the rope and read the rope reading. At this point, the distance from the center of the cable reel to the center of the pulley (i.e., the length of the measuring support rod) is known to be L1, the height of the cable reel from the ground to the ground is h1, and the rope reading is L2. The angle α between the measuring support rod and the horizontal plane can be calculated using trigonometric functions: h = L2 - L1 - L1 sin α - h1. After the measurement is completed, retract the measuring support rod 6, rotate the cable reel 7 to reel in the rope, and move the device to a safe area.

[0029] It should be noted that while plumb bob 11 is being lowered, measuring rope 9 remains taut. When plumb bob 11 contacts the ore face, measuring rope 9 instantly relaxes, allowing the surveyor to determine whether plumb bob 11 is in place. The angle α between the measuring support rod and the horizontal plane is typically 30°, 45°, or 60°, which is easily calculated. This angle can be used to determine the position of the rod fixing sleeve 5 and ensure that the angle of the measuring support rod 6 meets the aforementioned requirements.

[0030] In summary, the device effectively reduces the safety risks of personnel and equipment during the operation of measuring the height of the chute, has good adaptability to the chute environment in the mining area, and the measurement method is simple, highly operational, and the device is small, flexible and easy to recycle.

Claims

1. A simple device for measuring the height of a chute in a mining area, characterized by: The utility model comprises a measuring trolley (1), wherein a cable reel bracket (3) and a counterweight (2) are installed on the measuring trolley (1), a cable reel (7) is installed on the top of the cable reel bracket (3), a measuring rope (9) is wound on the cable reel (7), and a measuring rope stopper (8) is installed at the measuring rope outlet of the cable reel (7); the left and right sides of the cable reel (7) are hinged with measuring support rods (6), one end of the measuring support rod (6) is connected to the rod fixing sleeve (5) on the measuring trolley (1), and the other end is rotatably connected to the guide pulley (10); a plumb bob (11) is fixed at the end of the measuring rope (9), and when in use, one end of the plumb bob (11) fixed on the measuring rope (9) passes around the guide pulley (10) and vertically downwards into the chute.

2. A simple measuring device for the height of a chute in a mining area as claimed in claim 1, characterized in that: The measuring support rod (6) is a thickened stainless steel telescopic sleeve rod with adjustable length.

3. A simple measuring device for the height of a chute in a mining area as claimed in claim 1, characterized in that: A handle (4) is installed on the back of the measuring trolley (1).

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