A lifting device for mine support operation

Abstract

The invention discloses a mining machine, and specifically relates to a lifting device for mine support operations, comprising a lower base, an upper base, a rotating device, a manual mast lift, and a steel beam fixing device; the lower base is a steel frame base, which is welded from four steel sections, and is internally provided with a lead screw, a lower slider, and a slideway; the upper base is welded to the lower slider; the rotating device comprises a bearing seat, a bearing shell, and a rotating shaft; the manual mast lift is fixedly connected to a lift bottom plate, the lift bottom plate is fixedly connected to the top of the rotating shaft, and the steel beam fixing device is attached to the mast lift; the invention realizes forward, backward, left, and right movement through a base lead screw, and realizes 360° rotation through a rotating device, thereby solving the problem of inaccurate steel beam support position; by using a mast lift to lift steel beams, mechanical lifting is adopted instead of manual lifting, thereby increasing economic benefits and ensuring safe production.

Description

Technical Field

[0001] The invention belongs to the field of mining machinery, and in particular relates to a lifting device for mine support operations. Background Art

[0002] At present, in the advanced support operation of mines, the advanced support of the working face recovery tunnel mostly uses a single hydraulic support with a top beam support form. The top beam support operation is usually carried out by construction workers who carry the steel beam on their shoulders and climb the ladder to lift the steel beam to the corresponding position of the roof for support. It requires a large number of construction workers, and the labor intensity of the construction workers is high. The support efficiency is low and there is a safety hazard of falling and being injured. Most of the existing mine support lifting devices only have lifting functions. Some movable lifting devices are large in size and weight, and difficult to move. In the case of narrow tunnel space, the use of the lifting device is greatly restricted, making the installation of the top beam support more difficult. Therefore, there is an urgent need for a safe and reliable lifting device for support operations that can adapt to various tunnel conditions. Summary of the invention

[0003] In order to achieve the above object, the present invention adopts the following technical solution:

[0004] A lifting device for mine support operation, comprising: a lower base, an upper base, a rotating device, a manual mast lifter, and a steel beam fixing device;

[0005] The lower base is a steel frame base, which is welded from four steel sections. Two lead screws are installed in the lower base in parallel with the long side direction. A hand wheel is installed at one end of the lead screw. A lead screw nut is installed on each lead screw. The lower slider passes through the two lead screws and is fixed on the two lead screw nuts.

[0006] The upper base is welded on the lower slider, the long side direction of the upper base is parallel to the short side direction of the lower base, the upper base is a steel frame base, which is welded by four steel sections, two lead screws are installed in the upper base in parallel with the long side direction, a hand wheel is installed at one end of the lead screw, and a lead screw nut is installed on each lead screw, and the upper slider passes through the two lead screws and is fixed on the two lead screw nuts;

[0007] The rotating device comprises a bearing seat, a bearing bush, and a rotating shaft. The bearing seat is fixed to the bottom plate of the upper slider of the upper base. The bearing bush and the bearing seat have an interference fit. The rotating shaft and the bearing bush have a clearance fit. The top end of the rotating shaft is fixedly connected to the bottom plate of the elevator.

[0008] The manual mast lift is fixed on the lift bottom plate;

[0009] The steel beam fixing device is attached to a manual mast lifter, and two handles are installed on the steel beam fixing device, and a clamping slot is provided.

[0010] The steel frame base is a channel steel frame base, the channel steel opening is inward, and the groove of the long side channel steel is a slideway.

[0011] The two ends of the lead screw are fixed on the two short sides of the base through bearings, and the bearings fix the lead screw through a skeleton oil seal.

[0012] The slider is connected to the lead screw nut by bolts, and the slider is located in a slideway formed by the groove of the channel steel. The lower slider is composed of two parallel I-beams, and the upper slider is two parallel I-beams welded on a bottom plate.

[0013] The manual mast lift is fixedly connected to the lift bottom plate by bolts, and the lift bottom plate is fixedly connected to the top end of the rotating shaft by bolts.

[0014] The steel beam fixing device is fixed on the last mast section of the manual mast lifting machine by means of bolts.

[0015] The lifting device for mine support operations can be welded on a transfer machine or a walking device can be installed on the base.

[0016] Beneficial effects of the present invention:

[0017] 1. Use a mast lift to lift steel beams, and use mechanical lifting instead of manual lifting. This reduces the number of construction workers required, improves work efficiency and economic benefits, and avoids safety hazards such as high labor intensity and injuries from falling from heights caused by manual operations.

[0018] 2. The present invention realizes the planar movement and rotation of the lifting device through a screw and a rotating device, so that the steel beam can be moved or rotated to the position requiring support before lifting, thereby solving the problems of deviation between the center of the steel beam and the center of the tunnel, and the steel beam failing to reach the support spacing.

[0019] 3. The present invention is small in size, light in weight, and flexible in movement. It can be used normally even in a narrow space. The movement, rotation, and lifting of the lifting platform are all completed manually, and the operation is relatively simple. When electricity or hydraulics cannot be used in the lane, the lifting platform can still be used normally, which meets the use requirements of lanes in different situations and has wide applicability.

[0020] 4. When there is a transfer machine in the tunnel, the lifting device can be fixed on the transfer machine. When there is no transfer machine in the tunnel, a walking device can be installed at the bottom of the lifting device. It can be used normally in different types of tunnels. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A front view structural diagram of a lifting device for mine support operations provided by an embodiment of the present invention;

[0022] Figure 2A front view structural diagram of a lower base provided in an embodiment of the present invention;

[0023] Figure 3 A side structural diagram of an upper base provided in an embodiment of the present invention;

[0024] Figure 4 A structural diagram of a rotating device provided in an embodiment of the present invention;

[0025] Figure 5 A top view of a base provided in an embodiment of the present invention;

[0026] Figure 6 A cross-sectional view of a lower base provided in an embodiment of the present invention.

[0027] 1-lower base, 2-upper base, 3-rotating device, 4-lifting machine base plate, 5-manual mast lift, 6-steel beam fixing device, 7-screw, 8-screw nut, 9-handwheel, 10-lower slider, 11-upper slider, 12-bearing seat, 13-bearing shell, 14-rotating axis, 15-handle, 16-slot, 17-bearing, 18-upper slider base plate, 19-slide, 20-hollow cylinder, 21-lifting machine hand crank, 22-bolt. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1~Figure 5 As shown, a lifting device for mine support operation includes: a lower base 1, an upper base 2, a rotating device 3, a manual mast lift 5, and a steel beam fixing device 6;

[0030] Lower base Figure 2 As shown, the lower base is a channel steel frame base, which is welded by four channel steels, and the channel steel opening is inward. Two lead screws 7 are installed in the lower base 1 in parallel with the long side direction. The two ends of the lead screw 7 are fixed to the two short sides of the lower base 1 through bearings 17. The bearings 17 fix the lead screw 7 through a skeleton oil seal. A hand wheel 9 is installed at one end of the lead screw 7. A lead screw nut 8 is installed on each lead screw 7. The lower slider 10 is composed of two I-beams, passes through the two lead screws 7, and is fixed on two lead screw nuts 8. The lead screw nuts 8 are fixedly connected to the lower slider 10 by bolts 22. The lower slider 10 is placed in a slideway 19 formed by the groove of the channel steel.

[0031] Upper base 2 Figure 3As shown, the upper base 2 is welded on the lower slider 10, and the long side direction of the upper base 2 is parallel to the short side direction of the lower base 1. The upper base 2 is a channel steel frame base, which is welded by four channel steels, and the channel steel opening is inward. Two lead screws 7 are installed in the upper base 2 in parallel with the long side direction. The two ends of the lead screw 7 are fixed to the two short sides of the upper base 2 through bearings 17. The bearings 17 fix the lead screw 7 through a skeleton oil seal. A handwheel 9 is installed at one end of the lead screw 7. A lead screw nut 8 is installed on each lead screw 7. The upper slider 11 is two I-beams welded on a base plate, passing through the two lead screws 7 and fixed on two lead screw nuts 8. The lead screw nut 8 is fixedly connected to the upper slider 11 by bolts 22, and the upper slider 11 is placed in the slideway 19 formed by the groove of the channel steel.

[0032] Rotating device 3 Figure 4 As shown, the rotating device 3 includes a bearing seat 12, a bearing shell 13, and a rotating shaft 14. The bearing seat 12 is fixed to the bottom plate 18 of the upper slider. The bearing shell 13 and the bearing seat 12 have an interference fit. The rotating shaft 14 and the bearing shell 13 have a clearance fit. The top of the rotating shaft 14 is connected to the elevator bottom plate 4 by a bolt 22; the manual mast lift 5 is fixed to the elevator bottom plate 4 by a bolt 22; the steel beam fixing device 6 is connected to the manual mast lift 5 by a bolt 22, and two handles 15 are installed on the steel beam fixing device 6, and there is a slot 16 at the edge of the short side.

[0033] When in use, by turning the hand wheel 9 of the lower base 1, the lead screw nut 8 is driven to move left and right along a straight line on the lead screw 7, thereby driving the lower slider 10 and the upper base 2 on the lower slider 10 to move left and right along a straight line. By turning the hand wheel 9 of the upper base 2, the lead screw nut 8 is driven to move forward and backward along a straight line on the lead screw 7, thereby driving the upper slider 11 and the elevator base plate 4 on the upper slider 11 to move forward and backward along a straight line. By turning the hand wheels 9 of the lower base 1 and the upper base 2, the device can be moved forward and backward, left and right. After the device moves to a suitable position, the steel beam is placed in the slot 16 of the steel beam fixing device 6, and the steel beam is clamped with the rotating handle 15. Then, the angle of the steel beam is manually adjusted, and the steel bar is passed through the hollow cylinder 20 on the elevator base plate 4, and the steel bar is twisted to rotate the elevator base plate 4, thereby driving the steel beam to rotate. After the steel beam is rotated to a suitable position, the elevator hand crank 21 of the manual mast elevator 5 is turned to raise the mast, thereby driving the steel beam to rise to the position where support is required, and the construction personnel support it.

[0034] The above description is only a preferred specific implementation manner of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lifting device for mine support operation, characterized in that: include: Lower base, upper base, rotating device, manual mast lift, steel beam fixing device; The lower base is a steel frame base, which is welded from four steel sections. Two lead screws are installed in the lower base in parallel with the long side direction. A hand wheel is installed at one end of the lead screw. A lead screw nut is installed on each lead screw. The lower slider passes through the two lead screws and is fixed on the two lead screw nuts. The upper base is welded on the lower slider, the long side direction of the upper base is parallel to the short side direction of the lower base, the upper base is a steel frame base, which is welded by four steel sections, two lead screws are installed in the upper base in parallel with the long side direction, a hand wheel is installed at one end of the lead screw, and a lead screw nut is installed on each lead screw, and the upper slider passes through the two lead screws and is fixed on the two lead screw nuts; The rotating device comprises a bearing seat, a bearing bush, and a rotating shaft. The bearing seat is fixed to the bottom plate of the upper slider of the upper base. The bearing bush and the bearing seat have an interference fit. The rotating shaft and the bearing bush have a clearance fit. The top end of the rotating shaft is fixedly connected to the bottom plate of the elevator. The manual mast lift is fixed on the lift bottom plate; The steel beam fixing device is attached to a manual mast lifter, and two handles are installed on the steel beam fixing device, and a clamping slot is provided.

2. A lifting device for mine support operation according to claim 1, characterized in that: The steel frame base is a channel steel frame base, the channel steel opening is inward, and the groove of the long side channel steel is a slideway.

3. A lifting device for mine support operation according to claim 1, characterized in that: The two ends of the lead screw are fixed on the two short sides of the base through bearings, and the bearings fix the lead screw through a skeleton oil seal.

4. A lifting device for mine support operation according to claim 1, characterized in that: The upper slider and the lower slider are connected to the lead screw nut by bolts, and are both located in the slideway formed by the groove of the channel steel. The lower slider is composed of two parallel I-beams, and the upper slider is two parallel I-beams welded on a bottom plate.

5. A lifting device for mine support operation according to claim 1, characterized in that: The manual mast lift is fixedly connected to the lift bottom plate by bolts, and the lift bottom plate is fixedly connected to the top end of the rotating shaft by bolts.

6. A lifting device for mine support operation according to claim 1, characterized in that: The steel beam fixing device is fixed on the last mast section of the manual mast lifting machine by means of bolts.

7. A lifting device for mine support operation according to claim 1, characterized in that: The lifting device for mine support operation is welded on a transfer machine.

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