Mining narrow gauge flat crane

Abstract

A mining narrow-gauge flat crane comprises a flat car frame and a lifting arm, the lifting arm is installed on the upper portion of the flat car frame, at least two sets of wheel pairs which are arranged in a front-back spaced mode are arranged at the bottom of the flat car frame, the wheel pairs are connected to a rail of a haulage roadway in a sliding mode, and telescopic supporting leg structures are arranged on the front side and the rear side of the flat car frame. The middle of the left side and the middle of the right side of the flat car frame are each provided with a propping column, the two propping columns are arranged in a bilateral symmetry mode, the flat car frame is further provided with a hydraulic pump station and a console, the underground power source provides power for a motor of the hydraulic pump station, and the hydraulic pump station provides hydraulic power for the lifting arm, the telescopic supporting leg structure and the propping columns. And the console controls the lifting arm, the telescopic supporting leg structure and the propping column to act respectively. The lifting device is flexible in lifting position, meets the requirement of lifting at various positions, has a car stabilizing function during lifting, is high in safety, and can greatly reduce the difficulty of manually loading and unloading materials and reduce the labor intensity of workers.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary transportation and hoisting equipment for coal mine roadways. Specifically, it relates to a narrow-gauge flat lifting crane for mines. Background Art

[0002] Flatbed trucks are mainly used for the transportation of materials, personnel and large equipment above and below the coal mine. They are special narrow-gauge vehicles for rail transportation. The unloading of underground materials generally uses extended anchor cables on the roof and manual hoists for lifting, or lifting gantries and cranes are arranged underground for hoisting, and the height of the roadway needs to be increased in the hoisting area. Using manual chain hoists for lifting has high labor intensity, low efficiency and many safety hazards. For roadways with low roadway height or inclined roofs, it is difficult to lift and unload due to insufficient lifting height. On the other hand, for roadways using the gob-side entry retaining mining technology, unit supports for rib-side support need to be arranged in the retained roadway. As the working face advances, the rib-side unit supports need to be arranged forward accordingly. Currently, the unit supports are mainly towed by a winch or transported by a unit support transporter. Towing by a winch has problems such as difficult lateral pushing, poor safety and high labor intensity of personnel. In roadways using rail transportation, the unit support transporter has no traveling space. Therefore, the mechanized handling of unit supports cannot be achieved. There is an urgent need for a lifting device that can move with the advancement of the working face, adapt to rail transportation in the roadway, and quickly unload and load materials or large equipment.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0004] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a narrow-gauge flat lifting crane for mines. The lifting position of the utility model is flexible, meeting the requirements of lifting at various positions. It has a vehicle stabilizing function during lifting, high safety, can greatly reduce the difficulty of manual loading and unloading of materials, and reduce the manual labor intensity.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: A narrow-gauge mine flat lifting crane, comprising a flatbed truck frame and a lifting arm. The lifting arm is installed on the upper part of the flatbed truck frame. At least two groups of wheel sets arranged at intervals are provided at the bottom of the flatbed truck frame. The wheel sets are slidably connected to the track. The flatbed truck frame is towed by a mine traction winch steel wire rope to travel on the track. Telescopic support leg structures are provided on both the front side and the rear side of the flatbed truck frame. A strut column is provided in the middle of each of the left and right sides of the flatbed truck frame. The two strut columns are symmetrically arranged left and right. A hydraulic pump station and a control console are also provided on the flatbed truck frame. The underground power supply supplies power to the motor of the hydraulic pump station. The hydraulic pump station respectively provides hydraulic power to the lifting arm, the telescopic support leg structure and the strut column. The control console respectively controls the actions of the lifting arm, the telescopic support leg structure and the strut column. During the lifting operation, the telescopic support leg structure extends to lift the whole vehicle off the track, and the strut column extends to press against the roadway roof to stabilize the whole vehicle body, and the lifting arm performs the material lifting operation.

[0006] Based on the above, the telescopic support leg structure includes two groups of support leg assemblies. The two groups of support leg assemblies have the same structure and are symmetrically arranged left and right.

[0007] The left support leg assembly includes a support fixed outer cylinder, a support telescopic cylinder and a vertical support leg oil cylinder. The support fixed outer cylinder is horizontally and fixedly installed on the left side of the upper surface of the flatbed truck frame along the left-right direction. The left end of the support fixed outer cylinder is open and extends to the left side of the flatbed truck frame. The support telescopic cylinder is slidably inserted into the support fixed outer cylinder concentrically. The right end of the support telescopic cylinder is open. The left end of the support telescopic cylinder extends out of the left end of the support fixed outer cylinder. A horizontal telescopic oil cylinder is hinged concentrically between the inner right end of the support fixed outer cylinder and the inner left end of the support telescopic cylinder. The vertical support leg oil cylinder is fixedly installed at the left end of the support telescopic cylinder. The hydraulic pump station respectively provides hydraulic power to the horizontal telescopic oil cylinder and the vertical support leg oil cylinder. The control console respectively controls the actions of the horizontal telescopic oil cylinder and the vertical support leg oil cylinder.

[0008] Based on the above, the strut column includes a strut telescopic cylinder and a strut fixed outer cylinder. The strut fixed outer cylinder is vertically arranged with an open upper end. The bottom end of the strut fixed outer cylinder is fixedly installed on the flatbed truck frame. The strut telescopic cylinder is slidably inserted into the strut fixed outer cylinder concentrically. The lower end of the strut telescopic cylinder is open. The upper end of the strut telescopic cylinder extends out of the upper end of the strut fixed outer cylinder. A strut oil cylinder is hinged concentrically between the inner bottom end of the strut fixed outer cylinder and the inner top end of the strut telescopic cylinder. The top of the strut telescopic cylinder is universally hinged with a top plate. A plurality of anti-slip strips are evenly distributed on the top of the top plate. The hydraulic pump station provides hydraulic power to the strut oil cylinder. The control console controls the action of the strut oil cylinder.

[0009] Based on the above, the control console includes a hydraulic control system. A manual multi-way valve is provided on the hydraulic control system. The outer parts of the hydraulic pump station and the control console are provided with a housing.

[0010] The utility model has substantial features and progress compared with the prior art. Specifically, the beneficial effects of the utility model are as follows:

[0011] (1) Wheel sets are arranged at the bottom of the flatbed truck frame, and the wheel sets are slidably connected to the tracks in the transportation roadway. Then, the mine narrow-gauge flatbed crane realizes walking based on the tracks in the transportation roadway and is towed by the steel wire rope of the mine traction winch. The lifting position is flexible, meeting the requirements of lifting at multiple positions;

[0012] (2) During the lifting operation, the support telescopic cylinder is extended to support and fix the outer cylinder through the horizontal telescopic oil cylinder. Then, the vertical leg oil cylinders on both sides are respectively moved outward and extended to increase the vehicle support points. The vertical leg oil cylinders lift the whole vehicle off the track. At the same time, two cross-bracing columns are extended to support the roadway roof. The vertical leg oil cylinders and the cross-bracing columns jointly support and stabilize the whole vehicle, with high safety. For the case where the roadway roof is an inclined roof, a fixed heightening column can also be added at the bottom of one of the cross-bracing columns to meet the requirements of different heights of cross-bracing in the inclined roof roadway;

[0013] (3) The lifting arm can achieve multiple degrees of freedom movements such as rotation, pitching, and telescoping, realizing the lifting function, which can greatly reduce the difficulty of manual loading and unloading of materials and reduce the labor intensity of workers.

[0014] (4) The utility model can also be used for the unloading requirements of unit supports in the roadway reserved along the goaf. It can move forward with the advancement of the working face, meeting the requirements of unloading, transferring, and arranging unit supports on one side of the reserved roadway sealing wall. Description of the Drawings

[0015] Figure 1 is a schematic structural view of the utility model.

[0016] Figure 2 is a top view of the utility model.

[0017] Figure 3 is a cross-sectional view of the telescopic leg structure of the utility model.

[0018] Figure 4 is Figure 1 the A-A cross-sectional view in

[0019] In the figure: 1. Flatbed truck frame; 2. Telescopic lifting arm; 3. Track; 4. Wheel set; 5. Slewing platform; 6. Adjusting oil cylinder; 7. Hoisting and lifting device; 8. Cross-bracing column; 9. Hydraulic pump station; 10. Control console; 11. Support fixed outer cylinder; 12. Support telescopic cylinder; 13. Vertical leg oil cylinder; 14. Horizontal telescopic oil cylinder; 15. Cross-bracing telescopic cylinder; 16. Cross-bracing fixed outer cylinder; 17. Cross-bracing oil cylinder; 18. Top plate; 19. Anti-slip strip; 20. Manual multi-way valve; 21. Housing; 22. Fixed heightening column; 23. Arm seat; 24. Lifting arm oil cylinder. Detailed Implementation Modes

[0020] The technical solutions of the present utility model will be further described in detail through specific implementation modes below.

[0021] As Figures 1 to 4 shown, a narrow-gauge flat lifting crane for mine use includes a flatbed truck frame 1 and a lifting arm. The lifting arm is installed on the upper part of the flatbed truck frame 1. Two sets of wheel pairs 4 arranged at intervals front and rear are provided at the bottom of the flatbed truck frame 1. The wheel pairs 4 are slidably connected to the track 3 in the transportation roadway. The flatbed truck frame 1 is towed and travels through a wire rope of a mine towing winch. The lifting position is flexible. Telescopic support leg structures are provided on both the front side and the rear side of the flatbed truck frame 1. One shore jack column 8 is provided in the middle of each of the left and right sides of the flatbed truck frame 1. The two shore jack columns 8 are arranged symmetrically left and right. A hydraulic pump station 9 and a control console 10 are also provided on the flatbed truck frame 1. The underground power supply supplies power to the motor of the hydraulic pump station 9. The hydraulic pump station 9 respectively provides hydraulic power to the lifting arm, the telescopic support leg structure and the shore jack column 8. The control console 10 respectively controls the actions of the lifting arm, the telescopic support leg structure and the shore jack column 8. During the lifting operation, the telescopic support leg structure extends to lift the whole vehicle off the track, and the shore jack column extends to press against and contact the roadway roof to stabilize the whole vehicle body, and the lifting arm performs the material lifting operation.

[0022] Among them, the wheel pairs 4 at the bottom of the flatbed truck frame 1 have the same gauge as the wheel pairs on the existing flatbed truck. This narrow-gauge flat lifting crane for mine use can be connected to the existing flatbed truck, can travel on the track in a narrow area, travel with other flatbed trucks and perform fixed-point lifting, which is flexible and convenient and meets the requirements of hoisting operations in the track roadway of the coal mine underground.

[0023] The lifting arm in this embodiment mainly consists of a telescopic lifting arm 2, a slewing platform 5, an adjusting oil cylinder 6 and a winch lifting device 7. The slewing platform 5 is fixedly installed on the flatbed truck frame 1. The slewing platform 5 consists of a hydraulic slewing motor and a slewing bearing. An arm seat 23 is fixed on the top of the slewing platform 5. The bottom end of the arm barrel of the telescopic lifting arm 2 is hinged to the arm seat 23. An adjusting oil cylinder 6 is hinged between the arm barrel of the telescopic lifting arm 2 and the arm seat. The adjusting oil cylinder 6 controls the pitching angle of the telescopic lifting arm 2. A boom cylinder 24 for controlling the telescoping of the telescopic lifting arm 2 is also provided on the arm barrel of the telescopic lifting arm 2. The winch lifting device 7 is fixedly installed on the arm barrel of the telescopic lifting arm 2. A pulley is provided at the front end of the telescopic lifting arm 2. The front end of the lifting rope of the winch lifting device 7 bypasses the pulley and then goes down and is connected with a hook. The winch lifting device 7 is a hydraulic winch. The hydraulic pump station 9 respectively provides hydraulic power to the boom cylinder 24, the hydraulic slewing motor, the adjusting oil cylinder 6 and the winch lifting device 7. The control console respectively controls the actions of the boom cylinder 24, the hydraulic slewing motor, the adjusting oil cylinder 6 and the winch lifting device 7.

[0024] The telescopic support leg structure includes two sets of support leg assemblies. The two sets of support leg assemblies have the same structure and are arranged symmetrically left and right;

[0025] The outrigger assembly on the left side includes a support fixed outer cylinder 11, a support telescopic cylinder 12, and a vertical outrigger oil cylinder 13. The support fixed outer cylinder 11 is horizontally and fixedly installed on the upper left side of the flatbed truck frame 1 in the left-right direction. The left end of the support fixed outer cylinder 11 is open and extends to the left side of the flatbed truck frame 1. The support telescopic cylinder 12 is coaxially and slidably inserted into the support fixed outer cylinder 11. The right end of the support telescopic cylinder 12 is open. The left end of the support telescopic cylinder 12 extends out of the left end of the support fixed outer cylinder 11. A horizontal telescopic oil cylinder 14 is coaxially hinged between the inner right end of the support fixed outer cylinder 11 and the inner left end of the support telescopic cylinder 12. The vertical outrigger oil cylinder 13 is fixedly installed at the left end of the support telescopic cylinder 12. The hydraulic pump station 9 provides hydraulic power to the horizontal telescopic oil cylinder 14 and the vertical outrigger oil cylinder 13 respectively. The control console 10 controls the actions of the horizontal telescopic oil cylinder 14 and the vertical outrigger oil cylinder 13 respectively.

[0026] The jacking column 8 includes a jacking telescopic cylinder 15 and a jacking fixed outer cylinder 16. The jacking fixed outer cylinder 16 is vertically arranged with an open upper end. The bottom end of the jacking fixed outer cylinder 16 is fixedly installed on the flatbed truck frame 1. The jacking telescopic cylinder 15 is coaxially and slidably inserted into the jacking fixed outer cylinder 16. The lower end of the jacking telescopic cylinder 15 is open. The upper end of the jacking telescopic cylinder 15 extends out of the upper end of the jacking fixed outer cylinder 16. A jacking oil cylinder 17 is coaxially hinged between the inner bottom end of the jacking fixed outer cylinder 16 and the inner top end of the jacking telescopic cylinder 15. The top of the jacking telescopic cylinder 15 is universally hinged with a top plate 18. A plurality of anti-slip strips 19 are evenly distributed on the top of the top plate 18. The hydraulic pump station 9 provides hydraulic power to the jacking oil cylinder 17. The control console 10 controls the action of the jacking oil cylinder 17. The top plate 18 can adapt to the contact with the uneven roof. Each anti-slip strip 19 is arranged in a circumferential array and in a cross shape. The anti-slip strips 19 can increase the friction between the top plate 18 and the roof, improve the support stability of the jacking column 8 and the roof, and thus contribute to the stability of the whole vehicle.

[0027] The control console 10 includes a hydraulic control system. A manual multi-way valve 20 is arranged on the hydraulic control system. A housing 21 is provided outside the hydraulic pump station 9 and the control console 10. The actions of the boom oil cylinder 24, the hydraulic slewing motor, the adjusting oil cylinder 6, the winch hoisting device 7, the horizontal telescopic oil cylinder 14, the vertical outrigger oil cylinder 13, and the jacking oil cylinder 17 are respectively controlled through the manual multi-way valve 20.

[0028] When the narrow-gauge flat lifting crane for mines is in the lifting operation, the support telescopic cylinder 12 is controlled by the horizontal telescopic oil cylinder 14 to extend and support and fix the outer cylinder 11, the four vertical leg oil cylinders 13 are respectively moved outwards, then the four vertical leg oil cylinders 13 are controlled to extend to lift the whole vehicle off the track 3, and at the same time, the two shore-up oil cylinders 17 are controlled to extend, so that the two shore-up telescopic cylinders 15 extend, and the top plate 18 is in contact with the roof of the roadway by pressing. Then, the four vertical leg oil cylinders 13 and the two shore-up columns 8 jointly support the overall stability. After the materials transported by the flatbed truck approach the lifting crane, the lifting arm can be used to lift, transfer and unload the materials, etc., so as to achieve the purpose of unloading the truck. In addition to being used for lifting and unloading materials in the track transportation roadway, the narrow-gauge flat lifting crane for mines can also be used for the unloading requirements of the unit supports in the roadway left during the gob-side entry retaining process. By traveling on the original track, it can move forward with the advancement of the working face to meet the requirements of unloading, transferring and arranging the unit supports on one side of the retaining wall of the roadway left.

[0029] The two shore-up columns 8 in this embodiment can be independently controlled. For the roadway with an inclined roof, a fixed heightening column 22 can be added to the bottom of one of the shore-up columns 8 to meet the requirements of shore-up at different heights in the inclined roof roadway.

[0030] The body length of the narrow-gauge flat lifting crane for mines is less than 2.5 meters, with a miniaturized design, flexible turning, and equipped with a lifting arm, meeting the use requirements for lifting materials in the narrow and low roadway in the coal mine.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: still modifications can be made to the specific implementation manners of the present invention or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A narrow-gauge flatbed crane for mining, characterized in that: It includes a flatbed truck frame and a lifting arm, the lifting arm is installed on the upper part of the flatbed truck frame, and at least two sets of wheel pairs arranged at intervals in front and behind are provided at the bottom of the flatbed truck frame, the wheel pairs are slidably connected to the track of the transport tunnel, and the flatbed truck frame is pulled on the track by the wire rope of the mining traction winch, and telescopic leg structures are provided on the front and rear sides of the flatbed truck frame, and a top column is provided in the middle of the left and right sides of the flatbed truck frame, and the two top columns are symmetrically arranged on the left and right. A hydraulic pump station and a control console are also provided on the flatbed truck frame, and the underground power supply provides power to the motor of the hydraulic pump station, and the hydraulic pump station provides hydraulic power to the lifting arm, the telescopic leg structure and the top column respectively, and the control console controls the actions of the lifting arm, the telescopic leg structure and the top column respectively; during the lifting operation, the telescopic leg structure is extended to lift the entire vehicle off the track, the top column is extended to press and contact with the top plate of the tunnel to stabilize the entire vehicle body, and the lifting arm performs material lifting operations.

2. The narrow-gauge flatbed crane for mining according to claim 1, characterized in that: The telescopic leg structure includes two sets of leg assemblies, which have the same structure and are arranged symmetrically on the left and right. The left outrigger assembly includes a supporting fixed outer cylinder, a supporting telescopic cylinder and a vertical outrigger oil cylinder. The supporting fixed outer cylinder is horizontally fixedly installed on the left side of the upper surface of the flatbed truck frame along the left and right directions. The left end of the supporting fixed outer cylinder is open and extends to the left side of the flatbed truck frame. The supporting telescopic cylinder is slidably inserted into the supporting fixed outer cylinder concentrically. The right end of the supporting telescopic cylinder is open, and the left end of the supporting telescopic cylinder extends out of the left end of the supporting fixed outer cylinder. A horizontal telescopic cylinder is concentrically hinged between the inner right end of the supporting fixed outer cylinder and the inner left end of the supporting telescopic cylinder. The vertical outrigger oil cylinder is fixedly installed on the left end of the supporting telescopic cylinder. The hydraulic pump station provides hydraulic power to the horizontal telescopic cylinder and the vertical outrigger oil cylinder respectively, and the control panel controls the actions of the horizontal telescopic cylinder and the vertical outrigger oil cylinder respectively.

3. The narrow-gauge flatbed crane for mining according to claim 1, characterized in that: The top column includes a top telescopic cylinder and a top fixed outer cylinder. The top fixed outer cylinder is vertically arranged and has an open upper end. The bottom end of the top fixed outer cylinder is fixedly mounted on the flatbed truck frame. The top telescopic cylinder is slidably inserted in the top fixed outer cylinder concentrically. The lower end of the top telescopic cylinder is open. The upper end of the top telescopic cylinder extends out of the upper end of the top fixed outer cylinder. A top cylinder is concentrically hinged between the inner bottom end of the top fixed outer cylinder and the inner top end of the top telescopic cylinder. A top plate is universally hinged on the top of the top telescopic cylinder. A number of anti-slip strips are evenly distributed on the top of the top plate. The hydraulic pump station provides hydraulic power to the top cylinder, and the control panel controls the movement of the top cylinder.

4. The narrow-gauge flatbed crane for mining according to claim 1, characterized in that: The control console comprises a hydraulic control system, a manual multi-way valve is arranged on the hydraulic control system, and a cover is arranged outside the hydraulic pump station and the control console.

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