Cyclic tunneling type coal seam cutting integrated equipment

The integrated coal seam cutting equipment using a circulating tunneling method utilizes a chain-plate cutter to create cutting seams within the coal seam, solving the problems of numerous boreholes, complex construction, and low safety in existing underground gas control in coal mines. This achieves efficient and safe gas extraction and automated operation.

CN113530538BActive Publication Date: 2025-11-04PINGDINGSHAN ANTAIHUA MINING SAFETY EQUIP MFG
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Patent Information

Application Number
CN202110874383.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-07-30
Publication Date
2025-11-04
Estimated Expiration
2041-07-30

AI Technical Summary

Technical Problem

In existing coal seam gas control in coal mines, there are many boreholes, complicated construction processes, high labor intensity, low safety factor, and long gas extraction cycle, which pose risks of borehole collapse and gas outburst.

Method used

The integrated coal seam cutting equipment using a circulating tunneling mechanism creates cutting slits within the coal seam using chain-plate circulating cutters. Coal powder is then spirally discharged to both sides through the cutters on the chain plates, improving the permeability of the coal seam. Power is provided by the walking drive mechanism and auxiliary walking mechanism to achieve automated cutting and gas extraction.

Benefits of technology

It reduced the labor intensity of drilling operations and the gas extraction cycle, improved coal seam permeability and safety, reduced safety hazards, and achieved automated operation and efficient gas extraction.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application discloses a kind of cyclic tunneling type coal seam cutting integrated equipment, including walking driving mechanism and chain plate type cyclic tunneling cutter;Walking driving mechanism includes walking platform, driving motor or hydraulic motor and drive box, the output shaft of driving motor or hydraulic motor is connected with the transmission of input shaft of drive box, and driving shaft is provided on drive box;Chain plate type cyclic tunneling cutter includes chain plate, axle bracket, main drive wheel, driven wheel and tunneling cutter;Axle bracket is fixed on walking platform, and the inside and outside two ends are respectively provided with driven wheel and main drive wheel, and main drive wheel is connected with driving shaft, and chain plate is sleeved in main drive wheel and driven wheel, and its outside is provided with tunneling cutter;The application changes the process mode of existing gas control, reduces the workload of underground tunneling roadway, and the equipment structure is simple, convenient to extract coal seam gas, improves the effectiveness of outburst prevention effect, in addition, automatic control can be realized in cutting process, which greatly reduces the possible safety hazards.
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Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine gas control, and particularly relates to a circulating tunneling type coal seam cutting integrated equipment. BACKGROUND

[0002] The most common means of coal seam gas control in underground coal mines in China is to arrange dense boreholes, block the boreholes, introduce negative pressure pipes, use the negative pressure pipes to extract the gas stored in the coal seam, thereby reducing the gas concentration in the coal seam and ensuring production safety during later coal seam mining.

[0003] The existing borehole arrangement forms multiple holes in communication with the roadway in the coal seam, and a hole closure device is arranged in each hole. The gas extraction is performed by forming a negative pressure pipe network between the hole closure devices and the negative pressure pipes. However, this method has the following problems:

[0004] 1. The dense boreholes have a large number of holes per unit area, consume a lot of manpower and resources, and have low added value.

[0005] 2. The borehole diameter is limited, the effective area of the coal seam for releasing gas is small, the gas desorption in the coal seam is slow, and the extraction period is long.

[0006] 3. The borehole is prone to gas outburst and jetting accidents, has a low safety factor, and is prone to accidents.

[0007] 4. The borehole is prone to hole collapse, which is not conducive to gas release and extraction.

[0008] 5. The borehole is accompanied by hydraulic flushing, high-pressure water fracturing, and cavity forming processes, which consume a lot of manpower and resources and have a large amount of manual work.

[0009] The existing technology also uses hydraulic punching gas extraction technology to improve the coal permeability, but in the implementation process, there are frequent gas over-limiting problems, which are prone to human-induced outburst.

[0010] Therefore, the existing drilling method for gas control has the problems of a large number of boreholes, complicated construction process, high labor intensity, large investment of manpower, resources and capital, and high maintenance cost. Therefore, it is necessary to find a new technology with low coal mine gas control cost and a high-performance mining mechanical equipment to replace the existing technology. Based on this, it is necessary to research a circulating tunneling type coal seam cutting integrated equipment. SUMMARY

[0011] In view of the defects and problems of the existing equipment, the present application provides a circulating tunneling type coal seam cutting integrated equipment, which effectively solves the problems of high investment cost and high difficulty in coal seam mining in the existing equipment.

[0012] The technical problem is solved by the following solution: a circulating tunneling type coal seam cutting integrated equipment, comprising a walking driving mechanism and a chain plate type circulating digging cutter; the walking driving mechanism comprises a walking platform, a driving motor or hydraulic motor and a driving box, the driving motor or hydraulic motor is installed on the walking platform, the output shaft thereof is in transmission connection with the input shaft of the driving box, and the driving box is provided with a driving shaft; the chain plate type circulating digging cutter comprises a chain plate, an axle bracket, a main driving wheel, a driven wheel and a digging cutter; the axle bracket is fixed on the walking platform, the inner and outer ends thereof are respectively provided with the driven wheel and the main driving wheel, the main driving wheel is in transmission connection with the driving shaft, and the chain plate is sleeved on the main driving wheel and the driven wheel, and the outer side thereof is provided with the digging cutter.

[0013] Further, the inner end of the axle bracket is provided with an auxiliary walking mechanism, the auxiliary walking mechanism comprises a hydraulic driving motor or hydraulic motor and a walking pawl; the hydraulic driving motor or hydraulic motor is installed on the inner end of the axle bracket and is close to the driven wheel, the eccentric part of the walking pawl is provided with a rotating shaft, the rotating shaft is in transmission connection with the output shaft of the hydraulic driving motor or hydraulic motor, and the walking pawl can be located below the axle bracket in rotation.

[0014] Further, the walking pawl comprises a rotating shaft, an upper eccentric wheel and a lower eccentric wheel, and the upper eccentric wheel and the lower eccentric wheel are alternately sleeved on the rotating shaft.

[0015] Further, the walking platform is provided with a walking track, the walking platform is provided with a support oil cylinder arranged in the vertical direction, a support seat is arranged on the upper portion of the support oil cylinder, and the driving motor or hydraulic motor and the driving box are installed on the support seat.

[0016] Further, a top plate is arranged on the inner end of the axle bracket and extends upwards or downwards, the top plate is close to the driven wheel, and a hydraulic jack or a drilling machine drill rod is installed on the top plate.

[0017] Further, the chain plate type circulating digging cutter is arranged in multiple layers in intervals, the top plate is connected with adjacent axle brackets, and the driving end of the main jack is fixed on the top plate.

[0018] Further, the chain plate type circulating digging cutter has a triangular structure, two main driving wheels and one driven wheel are fixed on three supporting points of the axle bracket, the two main driving wheels are in transmission connection with two main driving shafts, the driven wheel is located at the far end of the walking platform, and the chain plate is sleeved on the main driving wheel and the driven wheel.

[0019] Further, the chain plate type circulating digging cutter spans the coal seam, and walking driving mechanisms are arranged at both ends of the chain plate type circulating digging cutter, and the driven wheel is sleeved on the driving shaft on the corresponding side.

[0020] Further, an adjusting seat is sleeved on the inner end of the axle bracket, an adjusting rod is arranged between the adjusting seat and the axle bracket, and the driven wheel is arranged on the adjusting seat.

[0021] Further, the main drive wheel and the driven wheel are a belt wheel or a gear wheel.

[0022] The present application has the beneficial effect that the present application is a full seam circulating chain plate cutting blade slotting device, which adopts the cutting blade embedded on the circulating chain plate to spiral discharge the cutting slot coal powder to both sides, improves the cutting efficiency and the discharge of the cutting slot coal powder, greatly improves the seam permeability, reduces the labor intensity of drilling construction and the gas extraction period, adopts the cutting blade embedded on the circulating chain plate to cut a slot in the seam, which unloads the pressure and increases the permeability of the seam, the new circulating chain plate cutting blade slotting device and the coal discharge to both sides during slotting, and the intelligent operation device, the construction process can be automatically controlled, and the safety of underground construction is improved.

[0023] The present application utilizes the walking driving mechanism to provide the rotating and forward propulsion power for the chain plate type circulating cutting blade from the outside, i.e. the roadway, i.e. utilizes the driving motor or hydraulic motor and driving box to provide the rotating power, utilizes the moving function of the walking platform to drive the chain plate type circulating cutting blade to move forward, and cuts the coal seam to be cut to form a cutting slot in the coal seam to be cut.

[0024] In the implementation, the present application can be applied to single side roadway or double side roadway, for single side, the present application is provided with a walking driving wheel at the driven wheel inside the seam, the walking driving wheel is an eccentric structure, which can be driven to rotate and provide auxiliary walking power inside, and cooperates with the walking driving mechanism in the roadway to jointly complete the forward propulsion power of the chain plate type circulating cutting blade, or a roof can be provided near the driven wheel, the roof is provided with a driving roof prop, the driving roof prop has a certain power and can drive the roof to move forward, thereby forming the power inside the driven wheel, and cooperates with the walking driving mechanism outside to realize the forward propulsion power of the chain plate type circulating cutting blade.

[0025] For double side roadway, the present application can be provided with a walking driving mechanism in the double side roadway, the chain plate type circulating cutting blade is across the seam to be cut, and is connected with the walking driving mechanisms on both sides which are synchronously walked and driven, the walking driving mechanisms on both sides provide the forward walking and rotating power for the chain plate type circulating cutting blade.

[0026] The present application changes the existing gas treatment process, reduces the workload of the underground tunneling roadway, has the characteristics of simple equipment structure, convenient extraction of seam gas and improved safety, compared with the traditional permeability increasing method, reduces the labor intensity of drilling construction and the gas extraction period, eliminates the gas extraction "blank zone" caused by the drilling track deviation, improves the effectiveness of the outburst prevention effect, and realizes automatic control during the cutting process, greatly reduces the possible safety hazards. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1Structure diagram of the present application.

[0028] Figure 2 Structure diagram of the walking driving mechanism.

[0029] Figure 3 Structure diagram of the chain plate type circulating digging blade.

[0030] Figure 4 Structure diagram of the adjusting mode of the adjusting seat.

[0031] Figure 5 Another embodiment of the adjusting seat.

[0032] Figure 6 Structure diagram of the auxiliary walking mechanism.

[0033] Figure 7 Structure diagram of the walking driving wheel.

[0034] Figure 8 Structure diagram of the active jacking rod.

[0035] Figure 9 Structure diagram of the top plate.

[0036] Figure 10 Structure diagram of the triangular chain plate type circulating digging blade.

[0037] Figure 11 Structure diagram of the triangular chain plate type circulating digging blade.

[0038] Figure 12 Structure diagram of the double walking driving.

[0039] The figure shows: 1 is the walking platform, 2 is the driving motor or hydraulic motor, 3 is the driving box, 4 is the driving shaft, 5 is the chain plate type circulating digging blade, 51 is the chain plate, 52 is the digging blade, 6 is the shaft support, 7 is the main driving wheel, 8 is the driven wheel, 9 is the adjusting seat, 10 is the guide groove, 11 is the adjusting rod, 12 is the guide shaft, 13 is the hydraulic driving motor or hydraulic motor, 14 is the walking driving wheel, 15 is the top plate, 16 is the hydraulic jacking rod or the drilling rig drill rod. DETAILED DESCRIPTION

[0040] The present application is further illustrated below in combination with the drawings and examples.

[0041] Embodiment 1: The embodiment aims to provide a cyclic tunneling coal seam cutting integrated equipment, mainly used for gas control in coal seam, changing the traditional process, cutting the coal seam horizontally, generating a cutting seam in the coal seam, making the coal seam layered, and enabling the gas in the upper and lower coal seams of the cutting seam to enter the cutting seam and be discharged from the cutting seam. In view of the problems of high difficulty and cost in coal seam mining in the existing coal seam construction mode, the embodiment provides a cyclic tunneling coal seam cutting integrated equipment.

[0042] As shown in Figure 1 A cyclic tunneling coal seam cutting integrated equipment, comprising a walking driving mechanism and a chain plate type cyclic tunneling cutter 5. The embodiment cuts the coal seam from one side of the roadway, and the walking driving mechanism walks in the one side of the roadway. The outer end of the chain plate type cyclic tunneling cutter 5 is in transmission connection with the walking driving mechanism. The main body of the chain plate type cyclic tunneling cutter 5 is deeply into the coal seam. The chain plate type cyclic tunneling cutter 5 is gradually tunneled forward under the driving of the walking driving mechanism and outputs the generated coal residue to the roadway.

[0043] As shown in Figure 2 The walking driving mechanism comprises a walking platform 1, a driving motor or hydraulic motor 2 and a driving box 3. The driving motor or hydraulic motor 2 is installed on the walking platform 1. The output shaft of the driving motor or hydraulic motor 2 is in transmission connection with the input shaft of the driving box 3. The driving box 3 is provided with a driving shaft 4.

[0044] In order to realize the walking function, the walking platform 1 is provided with a walking track in the embodiment. The walking platform 1 is installed with a support oil cylinder arranged in the vertical direction. A support seat is arranged at the upper part of the support oil cylinder. The driving motor or hydraulic motor 2 and the driving box 3 are installed on the support seat.

[0045] In the embodiment, the height of the support seat is adjusted by the support oil cylinder, and the height of the chain plate type cyclic tunneling cutter 5 is adaptively adjusted to match the height of the cutting seam. First, a preliminary cutting hole is generated in the coal seam to be cut. The height of the driving shaft is matched with the middle height of the preliminary cutting hole by adjusting the height through the support oil cylinder. Then, the chain plate type cyclic tunneling cutter is assembled on the driving shaft.

[0046] In the embodiment, the walking platform 1 is provided with a walking track having a certain width. The walking process is stable. The walking platform 1 is installed with a support oil cylinder arranged in the vertical direction. A support seat is arranged at the upper part of the support oil cylinder. The cutting height can be adjusted through the support oil cylinder, so that the height of the chain plate type cyclic tunneling cutter 5 matches the height of the preliminary cutting channel.

[0047] In terms of transmission, the driving motor or hydraulic motor 2 is in transmission connection with the driving box 3 through a speed reducer in the embodiment. The driving motor or hydraulic motor 2, the speed reducer and the driving box 3 are installed on the support seat. The end of the support seat is further provided with an operation workbench. An intelligent display screen and display instruments are arranged on the operation workbench.

[0048] The chain-plate circulating excavator 5 includes a chain plate 51, a shaft frame 6, a main drive wheel 7, a driven drive wheel 8, and an excavator 52. The shaft frame 6 is fixed on the traveling platform 1, and the driven drive wheel 8 and the main drive wheel 7 are respectively provided at its inner and outer ends. The main drive wheel 7 is connected to the drive shaft 4. The chain plate 51 is fitted on the main drive wheel 7 and the driven drive wheel 8, and the excavator 52 is provided on its outer side. During implementation, an outwardly inclined reinforcing bracket is provided on the support base to support the shaft frame and improve its stability.

[0049] The main drive wheel 7 and the driven wheel 8 are either pulleys or gears; the chain plate type circulating cutter 5 is connected to the drive wheel through a transmission, and the two can be driven by friction or gears, that is, the pulley is driven by friction, and the gear is driven by meshing.

[0050] In this embodiment, the cutting tool 52 is a right-angled triangular protrusion structure. Its long right-angled side is fixed on the chain plate 51. Its long right-angled side is the fixed part, and its short right-angled side is the digging and conveying part. The chain plate drives the cutting tool to rotate continuously. During the rotation, the cutting tool digs the coal seam. The generated coal slag is temporarily stored in the cavity formed between the short right-angled side of the cutting tool and the inclined side of the front cutting tool. As the chain plate rotates, it is conveyed out of the cutting seam.

[0051] This embodiment is implemented after the coal seam has been excavated to form a working face. It mainly targets single working face roadways and is constructed at a certain distance outside the working face stop line. The coal seam is cut using a chain plate circulating cutter. The cutting thickness can be controlled at about 200mm. The cutting thickness should not be too large to prevent coal and gas outburst accidents during cutting. The main method is to use the walking track to propel forward, drive the drive motor or hydraulic motor and reducer to drive the drive box, and rotate the main drive wheel to drive the circulating chain plate. The cutter embedded in the chain plate cuts into the coal seam and continues to excavate forward. This creates a space for displacement and expansion deformation of the coal body outside the soft strata, which increases the number of coal body fissures and accelerates the desorption and release of gas. The high concentration of gas in the cutting fissure space is extracted by the temporarily arranged gas extraction pipe, thereby realizing the decompression and extraction of gas in the coal body of the mining section and achieving the goal of coal bunker gas compliance after outburst prevention and control.

[0052] Example 2: This example is basically the same as Example 1, except that an adjustment structure is provided at the inner end of the shaft frame in this example.

[0053] like Figures 3-5 As shown, an adjusting seat 9 is fitted on the inner end of the shaft bracket 6, and an adjusting rod 11 is provided on the adjusting seat 9 and the shaft bracket 6. The drive wheel 8 is mounted on the adjusting seat 9.

[0054] The chain plate type circulating digging blade 5 is adjustable, and the specific mode is that the outer end of the shaft support 6 is a driving end, the main driving wheel 7 is arranged on the outer end, and the main driving wheel 7 is in transmission connection with the driving shaft 4. The adjusting seat 9 is matched and sleeved at the inner end of the shaft support 6. The adjusting seat 9 can slide relative to the inner end of the shaft support. The adjusting rod 11 is arranged between the shaft support and the adjusting seat in the sliding direction. The adjusting rod 11 can adjust the length and can be locked at any adjusting position. In the specific implementation, the adjusting rod 11 can be an electric push rod or a hydraulic push rod. The adjusting rod 11 can adjust the distance between the adjusting seat and the shaft support. The further purpose is to adjust the length between the main driving wheel and the driven wheel, so that the tightness of the chain plate is adaptively adjusted, and the loosening phenomenon of the chain plate type circulating digging blade during work is avoided.

[0055] In order to realize the relative sliding between the adjusting seat 9 and the shaft support 6, the end of the shaft support 6 is provided with a guide groove 10, and a guide block is arranged at the bottom of the adjusting seat. The guide block is limited in the guide groove 10, and the two can slide relative to each other and can limit the position. The adjusting rod 11 is an electric push rod or a hydraulic push rod. The adjusting rod 11 can adjust the length and can be locked at any adjusting position. The tightness of the chain plate 51 is adaptively adjusted, and the loosening phenomenon of the chain plate type circulating digging blade during work is avoided.

[0056] In order to realize the relative sliding, a guide shaft 12 is arranged at the inner end of the shaft support, and a guide sleeve is arranged on the adjusting seat 9. The guide shaft 12 is matched and sleeved in the guide sleeve. The connection mode of the guide shaft and the guide sleeve realizes the relative sliding of the shaft support and the adjusting seat. The distance between the driving wheel and the driven wheel is adjusted through the adjusting rod, so that the stable transmission between the chain plate and the driving wheel is realized. In the specific transmission mode, the main driving wheel 7 and the driven wheel 8 are belt wheels. In the chain plate type circulating digging blade, the chain plate is a component in transmission connection with the driving wheel. The friction transmission can be adopted between the two. The friction between the chain plate and the driving wheel can be adjusted through the adjusting rod, so that the chain plate type circulating digging blade can bear greater cutting load.

[0057] Embodiment 3: The embodiment is basically the same as embodiment 1, and the difference is that the auxiliary walking mechanism is arranged at the inner end in the embodiment.

[0058] As shown in Fig. 1, Figures 6-7 The auxiliary walking mechanism is arranged at the inner end of the shaft support 6. The auxiliary walking mechanism includes a hydraulic drive motor or a hydraulic motor 13 and a walking pawl 14. The hydraulic drive motor or the hydraulic motor 13 is installed at the inner end of the shaft support 6 and is close to the driven wheel 8. The eccentric shaft of the walking pawl 14 is provided with a rotating shaft. The rotating shaft is in transmission connection with the output shaft of the hydraulic drive motor or the hydraulic motor 13. The walking pawl can be located below the shaft support after rotation.

[0059] To reduce the load on the inside of the chain plate circulating cutter 5 when cutting coal seams, this embodiment has an auxiliary walking mechanism near the drive wheel. That is, the auxiliary walking mechanism is set at the inner end of the chain plate circulating cutter 5, and the walking drive mechanism is set at the outer end. When rotating, the walking wheel can alternately push the bottom foundation of the cutting seam, so that the inner end of the chain plate circulating cutter generates auxiliary assistance. In conjunction with the drive walking mechanism that travels in the external roadway, the chain plate circulating cutter can cut the coal seam to be cut more powerfully.

[0060] In specific implementation, the traveling wheel 14 includes a rotating shaft, an upper eccentric wheel, and a lower eccentric wheel, which are alternately mounted on the rotating shaft. In this embodiment, the upper eccentric wheel and the lower eccentric wheel are alternately mounted on the rotating shaft. In this structure, two eccentric wheels of the same diameter are coaxially mounted on the rotating shaft to form a symmetrical structure. Each rotation can make the eccentric wheel contact the bottom of the cutting seam twice, thereby generating auxiliary power.

[0061] Example 4: This example is basically the same as Example 1, except that an active power source is provided at the inner end of the chain plate circulating cutter in this example.

[0062] like Figures 8-9 As shown in the figure, in this embodiment, a top plate 15 is provided extending upward or downward at the inner end of the shaft frame 6. The top plate 15 is close to the drive wheel 8, and a hydraulic jack or a drill rod 16 is installed on the top plate 15.

[0063] In practice, the chain plate circulating cutter 5 is arranged in multiple layers at intervals. The top plate 15 is connected to the adjacent shaft frame. The driving end of the hydraulic jack or drilling rod 16 is fixed on the top plate 15. The moving function of the traveling platform drives the chain plate circulating cutter forward to cut the coal seam. The inside of the chain plate circulating cutter is the driven end, and the top plate is set on the inner shaft frame of the chain plate circulating cutter. The hydraulic jack or drilling rod that actively applies force is set on the top plate. The fixed end of the hydraulic jack or drilling rod is in a fixed state. It can contact the seam wall of the cutting seam or be fixed on the fixed seat, so that the inner end of the chain plate circulating cutter actively applies the thrust matched with the traveling drive mechanism, so that the chain plate circulating cutter can stably cut the coal seam.

[0064] Example 5: This example is basically the same as Example 1, except that the shape of the chain plate circulating cutter 5 is further explained in this example.

[0065] like Figures 10-11 As shown, the chain plate type circulating cutter has a triangular structure. Two main drive wheels 7 and one driven wheel 8 are fixed on three support points of the shaft frame 6. The two main drive wheels 7 are connected to two main drive shafts. The driven wheel 8 is located at the far end of the walking platform 1. The chain plate 51 is fitted on the main drive wheels 7 and the driven wheel 8.

[0066] The walking driving mechanism is located in the roadway and can walk in the roadway in a directional manner. The outer end of the triangular chain plate type circulating tunneling cutting tool is installed on the walking driving mechanism, and the inner end is deep into the coal seam to be cut. The triangular chain plate type circulating tunneling cutting tool can walk with the walking driving mechanism and can also be driven to rotate, so that the triangular chain plate type circulating tunneling cutting tool rotates while walking and cuts the coal seam to be cut.

[0067] In a further aspect, the two main driving wheels 7 and one driven wheel 8 are distributed at three corners of a same triangle, wherein the two main driving wheels 7 are distributed on the short legs of the triangle, and the driven wheel is smaller than the main driving wheels.

[0068] In the embodiment, the two main driving wheels are simultaneously connected with the output shaft of the driving box as power wheels. The two main driving wheels are distributed on the short legs of the triangle, and the driven wheel is located at the far end of the walking platform and extends into the coal seam along the long leg. The working face is the long leg of the triangle, and the inclined surface is used for supporting. The triangular structure can bear a large load and has high stability and safety.

[0069] In the embodiment, the triangular chain plate type circulating tunneling cutting tool is used to cut the coal seam to be cut, a gap is cut in the coal seam, the coal seam is relieved and the permeability of the coal seam is improved, the labor intensity of drilling construction and the gas extraction period are reduced, the triangular chain plate type circulating tunneling cutting tool uses triangular tension, has a stable structure, and improves the safety of underground construction.

[0070] Embodiment 6: The embodiment is basically the same as embodiment 1, and the difference is that the embodiment is provided with a walking driving mechanism with double sides synchronized.

[0071] As shown in FIG. 5, the chain plate type circulating tunneling tool crosses the coal seam, and the walking driving mechanism is provided at both ends of the chain plate type circulating tunneling tool. The driven wheel is sleeved on the driving shaft on the corresponding side. Figure 12 In the embodiment, the double-side roadway is pre-opened, the initial cutting channels are excavated in the coal seams to be cut and treated on both sides, the chain plate type circulating tunneling tool 5 is placed in the initial cutting channels, and then the walking driving mechanisms are placed in the machine roadway and the air roadway and connected with the chain plate type circulating tunneling tool. In the implementation, the walking driving mechanisms are synchronously operated, so that the chain plate type circulating tunneling tool 5 is synchronously pushed forward and rotated.

[0072]

[0073] ​The embodiment utilizes the working face roadway condition in the coal seam, utilizes the synchronous walking chain plate type coal seam cutting device to directly saw a certain thickness of soft sublevel in the coal seam, forms the mining of part of the coal body in the whole coal seam in the working face range, forms the cavity, makes the coal body at the top of the soft sublevel downward displacement and swelling deformation, the coal body at the bottom of the soft sublevel upward displacement and swelling deformation, so that the coal body not sawed in the coal seam expands as a whole, the fissure increases, and the channel for gas release is increased.

Claims

1. A cyclic mining type coal seam cutting integrated apparatus, characterized by: The walking driving mechanism comprises a walking platform, a driving motor or hydraulic motor and a driving box, the driving motor or hydraulic motor is installed on the walking platform, an output rotating shaft of the driving motor or hydraulic motor is in transmission connection with an input shaft of the driving box, and a driving shaft is arranged on the driving box.

2. The cyclic mining coal seam cutting integrated apparatus according to claim 1, characterized by: The walking platform is provided with a walking track, the walking platform is provided with a supporting oil cylinder arranged in a vertical direction, a supporting seat is arranged on an upper portion of the supporting oil cylinder, and the driving motor or hydraulic motor and the driving box are installed on the supporting seat.

3. The cyclic mining coal seam cutting integrated apparatus according to claim 1, characterized by: The chain plate type circulating digging blade is provided with multiple layers in intervals, the top plate is connected with adjacent shaft supports, and a driving end of the hydraulic jack or the drilling machine drill rod is fixed on the top plate.

4. The cyclic mining coal seam cutting integrated apparatus according to claim 1, characterized by: The main driving wheels and the from driving wheel are belt wheels or gears.

5. The cyclic mining coal cutting integrated apparatus according to claim 1, characterized by: The walking driving mechanism comprises a walking platform, a driving motor or hydraulic motor and a driving box, the driving motor or hydraulic motor is installed on the walking platform, an output rotating shaft of the driving motor or hydraulic motor is in transmission connection with an input shaft of the driving box, and a driving shaft is arranged on the driving box. The main driving wheels and the from driving wheel are belt wheels or gears.

Citation Information

Patent Citations

  • Chain arm saw type top cutting pressure relief device

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