A single track hoist advance temporary support device for a coal mine fully-mechanized excavation working face

Abstract

The utility model discloses a kind of coal mine fully mechanized excavation working face monorail hoist advance temporary support device, including monorail hoist, the lower end of the monorail hoist is connected with first support beam, the first support beam is hinged with second support beam, first swing oil cylinder is hinged on the first support beam, the telescopic end of the first swing oil cylinder is hinged with the second support beam, the second support beam is hinged with third support beam, the second support beam is hinged with second swing oil cylinder, the telescopic end of the second swing oil cylinder is hinged with the third support beam, the third support beam is hinged with mounting plate, first support oil cylinder is hinged on the third support beam, the telescopic end of the first support oil cylinder is hinged with the mounting plate, second support oil cylinder is fixed on the mounting plate, the telescopic end of the second support oil cylinder is fixed with stand column. The utility model is reliable in structural strength, accurate and controllable in operation, comprehensive in safety guarantee, economical and convenient in power source, efficient in transportation in place.

Description

Technical Field

[0001] This utility model relates to a temporary advance support device for a monorail crane in a coal mine fully mechanized tunneling face, belonging to the technical field of coal mining support equipment. Background Technology

[0002] A monorail crane is a system that uses a specially made I-beam suspended above the tunnel as a track. Various types of crane vehicles are connected together to form a train set, which is pulled by traction equipment and runs along the track. The traction power can be provided by wire rope, diesel engine, battery or pneumatic device.

[0003] The monorail advance support device is a transportation and support equipment specifically designed for complex environments such as mines. It combines the transportation capacity of a monorail with the support and protection functions of advance support, providing safe and efficient transportation and operational support in harsh environments.

[0004] The current monorail crane advanced support device has the following problems: the device structure is not robust enough, the operation is not precise, a separate pump station is required, the power source cost is high, and transportation is inconvenient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a temporary support device for a monorail crane in a coal mine tunneling face, so as to solve the technical problems existing in the prior art.

[0006] The technical solution adopted by this utility model is as follows: a temporary advance support device for a monorail crane in a coal mine fully mechanized tunneling face, including a monorail crane, a horizontal first support beam connected to the lower end of the monorail crane, a second support beam hinged to the end of the first support beam away from the monorail crane, a first swing cylinder hinged to the first support beam, the telescopic end of the first swing cylinder hinged to the end of the second support beam away from the first support beam, a third support beam hinged to the end of the second support beam away from the first support beam, a second swing cylinder hinged to the end of the second support beam near the third support beam, the telescopic end of the second swing cylinder hinged to the third support beam, a mounting plate hinged to the end of the third support beam away from the second support beam, a first support cylinder hinged to the third support beam, the telescopic end of the first support cylinder hinged to the end of the mounting plate near the third support beam, a second support cylinder fixed parallel to the mounting plate, and a column fixed to the telescopic end of the second support cylinder.

[0007] Preferably, the first support beam, the second support beam, and the third support beam are all made of No. 11 mining steel as the main load-bearing components, and the frame support is made of 100×100×5mm square tubing.

[0008] Preferably, the components of the first support beam, the second support beam, and the third support beam are connected by carbon dioxide gas shielded welding.

[0009] Preferably, the first support beam is a rectangular frame.

[0010] Preferably, the second support beam is a rectangular frame.

[0011] Preferably, the middle part of the third support beam is a rectangular frame, and the two sides of the third support beam extend outward by a certain length.

[0012] The beneficial effects of this utility model are:

[0013] 1. Compared with the prior art, the structure of this utility model is reliable: the main body is made of No. 11 mining steel (tensile strength ≥ 450MPa) and 100×100×5mm square tube, which is connected by CO2 gas shielded welding (penetration depth ≥ 8mm). The weld strength is not less than 90% of the base material, ensuring the stability of the load-bearing structure.

[0014] 2. Compared with the existing technology, the operation of this utility model is precise and controllable: the support deployment / retraction process is clear, key parameters are quantified (second support beam flipping speed 10° / s, third support beam moving speed 50mm / s, column synchronous speed difference ≤2mm / s), and pressure monitoring is strict (pre-tightening force 5MPa±0.5MPa, support resistance 25-30MPa), ensuring operational accuracy and safety.

[0015] 3. Compared with the prior art, this utility model provides comprehensive safety protection: the hydraulic system is equipped with a two-way hydraulic lock (cuts off the faulty oil circuit within 0.5 seconds, with a sinking amount ≤50mm) and a pressure safety valve (35MPa, response ≤0.3 seconds) to form dual protection; the daily "three checks" system (hydraulic lock flexibility, hose condition, and connector torque) combined with technical protection comprehensively improves operational safety.

[0016] 4. Compared with the prior art, the power source of this utility model is economical and convenient: it directly utilizes the hydraulic pump station (31.5MPa, 80L / min) of the tunneling machine, and can be quickly connected through quick-connect couplings, saving the cost of independent pump stations, simplifying electrical control, and reducing the difficulty of maintenance and troubleshooting.

[0017] 5. Compared with the prior art, the present invention has efficient transportation and positioning: in the folded state, it is pulled to a 5m safety zone by a monorail crane, and the parking position is parallel to the center line of the roadway. A passage gap of ≥0.8m is reserved on both sides, which can adapt to the narrow space underground and make the positioning accurate and convenient. Attached Figure Description

[0018] Figure 1 This is a diagram of the support structure used in this utility model.

[0019] Figure 2 This is a diagram of the dismounting and retraction structure of this utility model.

[0020] Figure 3 This is a top view of the utility model.

[0021] The reference numerals in the accompanying drawings of the instruction manual include: monorail 1, first support beam 2, second support beam 3, first swing cylinder 4, third support beam 5, second swing cylinder 6, first support cylinder 7, mounting plate 8, second support cylinder 9, and column 10. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1:

[0024] A temporary advance support device for a monorail crane in a coal mine tunneling face, such as Figures 1-3 As shown, the device includes a monorail crane 1, with a horizontal first support beam 2 connected to the lower end of the monorail crane 1. The monorail crane 1 drives the first support beam 2 to move, thereby realizing the overall movement of the device. A second support beam 3 is hinged to the left end of the first support beam 2. A first swing cylinder 4 is hinged to the first support beam 2. The telescopic end of the first swing cylinder 4 is hinged to the left end of the second support beam 3. A third support beam 5 is hinged to the left end of the second support beam 3. A second swing cylinder 6 is hinged to the left end of the second support beam 3. The telescopic end of the second swing cylinder 6 is hinged to the third support beam 5. A mounting plate 8 is hinged to the left end of the third support beam 5. A first support cylinder 7 is hinged to the third support beam 5. The telescopic end of the first support cylinder 7 is hinged to the upper end of the mounting plate 8. A second support cylinder 9 is fixed parallel to the mounting plate 8. A column 10 is fixed to the lower end of the second support cylinder 9.

[0025] In this embodiment, the first support beam 2, the second support beam 3, and the third support beam 5 are all made of No. 11 mining steel as the main load-bearing components, and the frame support is made of 100×100×5mm square tubing.

[0026] In this embodiment, the components of the first support beam 2, the second support beam 3, and the third support beam 5 are connected by carbon dioxide gas shielded welding. The welding wire type is ER50-6, the welding current is 180-220A, the weld penetration is ≥8mm, and the weld strength is ensured to be no less than 90% of the base metal strength.

[0027] In this embodiment, the first support beam 2 is a rectangular frame.

[0028] In this embodiment, the second support beam 3 is a rectangular frame.

[0029] In this embodiment, the middle part of the third support beam 5 is a rectangular frame, and the two sides of the third support beam 5 extend outward by a certain length.

[0030] The specific implementation process is as follows:

[0031] Equipment transportation and placement

[0032] When the equipment is in a fully retracted transport state, the operator needs to use the drive wheel transmission system of the monorail crane to smoothly pull the utility model to the 5m safe working area accurately measured outward from the tunnel face, ensuring that the equipment is parked parallel to the center line of the roadway and that there is a safe passage gap of not less than 0.8m on both sides.

[0033] Support deployment operation procedure

[0034] 1. The second support beam 3 is flipped: The second support beam 3 is flipped upward (flipping speed 10° / s) to the predetermined working position at 85° with the horizontal plane by controlling the first swing cylinder 4.

[0035] 2. The third support beam 5 contacts the top plate: After the second support beam 3 is reliably locked, the third support beam 5 is moved upward at a constant speed of 50 mm / s by controlling the second swing cylinder 6. When the three support beams contact the top plate and reach the initial pre-tightening force (5 MPa ± 0.5 MPa), the operation is stopped immediately. Visual inspection shows that the contact area between the three support beams and the top plate should be ≥90% to ensure a tight fit without gaps.

[0036] 3. Support column 10 supports the top beam: After confirming that the third support beam 5 is in contact with the top plate, the second support cylinder 9 is controlled to make the symmetrically arranged columns 10 extend synchronously with a speed difference of ≤2mm / s. After the support resistance of the top beam reaches the design value of 25-30MPa, the pressure is held for 30 seconds to confirm that the pressure is stable.

[0037] Support recovery operation procedure

[0038] If the support needs to be retracted, the safety operation sequence must be strictly followed in the opposite direction to the deployment of the support: First, slowly retract the column 10 so that the third support beam 5 is about 100mm away from the top plate; then lower the third support beam 5 to the lowest position; finally, make the second support beam 3 smoothly flip downward to the horizontal retracted state. During the entire process, it is strictly forbidden to stand under the support or place any debris.

[0039] Comprehensive safety assurance: The hydraulic system is equipped with a two-way hydraulic lock (cuts off the faulty oil circuit within 0.5 seconds, with a sinking amount ≤50mm) and a pressure safety valve (35MPa, response ≤0.3 seconds) to form double protection; the daily "three checks" system (hydraulic lock flexibility, hose condition, and joint torque) combined with technical protection comprehensively improves operational safety.

[0040] Economical and convenient power source: The hydraulic cylinder directly utilizes the tunneling machine's own hydraulic pump station (31.5MPa, 80L / min), and can be quickly connected through quick-connect couplings, saving the cost of an independent pump station, simplifying electrical control, and reducing the difficulty of maintenance and troubleshooting.

[0041] Efficient transportation and positioning: In the folded state, it is pulled to a 5m safety zone by a monorail crane 1. The parking position is parallel to the center line of the roadway, with a passage gap of ≥0.8m reserved on both sides, which can adapt to the narrow space underground and make the positioning precise and convenient.

[0042] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A temporary advance support device for a monorail crane in a coal mine fully mechanized tunneling face, characterized in that: The system includes a monorail crane. The lower end of the monorail crane is connected to a horizontal first support beam. A second support beam is hinged to the end of the first support beam furthest from the monorail crane. A first swing cylinder is hinged to the first support beam. The telescopic end of the first swing cylinder is hinged to the end of the second support beam furthest from the first support beam. A third support beam is hinged to the end of the second support beam furthest from the first support beam. A second swing cylinder is hinged to the end of the second support beam closest to the third support beam. The telescopic end of the second swing cylinder is hinged to the third support beam. A mounting plate is hinged to the end of the third support beam furthest from the second support beam. A first support cylinder is hinged to the third support beam. The telescopic end of the first support cylinder is hinged to the end of the mounting plate closest to the third support beam. A second support cylinder is fixed parallel to the mounting plate. A column is fixed to the telescopic end of the second support cylinder.

2. The temporary advance support device for a monorail crane in a coal mine tunneling face according to claim 1, characterized in that: The first support beam, the second support beam, and the third support beam are all made of No. 11 mining steel as the main load-bearing components, and the frame support is made of 100×100×5mm square tubing.

3. The temporary advance support device for a monorail crane in a coal mine tunneling face according to claim 1, characterized in that: The components of the first support beam, the second support beam, and the third support beam are connected by carbon dioxide gas shielded welding.

4. A temporary advance support device for a monorail crane in a coal mine tunneling face according to claim 1, characterized in that: The first support beam is a rectangular frame.

5. A temporary advance support device for a monorail crane in a coal mine tunneling face according to claim 1, characterized in that: The second support beam is a rectangular frame.

6. A temporary advance support device for a monorail crane in a coal mine tunneling face according to claim 1, characterized in that: The middle part of the third support beam is a rectangular frame, and the two sides of the third support beam extend outward by a certain length.

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