Moving crawler drilling machine with pneumatic motor

Abstract

The utility model discloses a moving caterpillar band drilling machine with a pneumatic motor, which comprises a caterpillar band drilling machine body, the pneumatic motor and an oil pump, the pneumatic motor is connected with the oil pump, a rotating shaft of the pneumatic motor is coaxially connected with a rotating shaft of the oil pump, an air supply connector of the pneumatic motor is connected with an underground pressure ventilation pipe, and the air supply connector of the pneumatic motor is connected with the underground pressure ventilation pipe. And the oil pump is connected with the crawler drilling machine body. The crawler drilling machine has the advantages that compressed air of an underground system drives the crawler drilling machine to move, the crawler drilling machine is driven by electric energy to move under complex conditions, the crawler drilling machine is convenient to carry, and production organization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of underground drilling in coal mines, in particular to a mobile crawler drilling rig. Background Art

[0002] The site conditions underground in coal mines are complex and the electricity management is strict. Fire dismantling and connection operations need to be applied for in advance and are greatly restricted by site conditions. There is a certain probability that the operation cannot be carried out within the application time limit.

[0003] When the crawler drilling rig is transported by a monorail crane, the rig must first lean against the rail (due to the height limit of the monorail crane, it cannot wait in the middle of the track) and wait for the monorail crane to arrive at the drilling rig transportation point. The rig can then move to the middle of the track, and then the drilling rig can be transported after the fire is thrown off. During this period, the arrival time of the monorail crane is uncertain, which can easily cause difficulty in meeting the time for the fire removal application, and the application is easily invalid and cannot be transported. Other transportation methods also have the problem of difficulty in meeting the fire removal application.

[0004] Some sections of the transportation route to the drilling site have no power supply, so a large number of cables need to be laid, resulting in a large investment in manpower and material resources.

[0005] According to the above analysis, if the crawler drilling rig is driven solely by electricity during its movement, there will be great uncertainty, which may easily cause delays and is not conducive to the safe organization of production.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art known to ordinary technicians in this field. Utility Model Content

[0007] The technical problem to be solved by the utility model is: how to solve the problem that the current crawler drilling rig is simply driven by electricity when moving, which has great uncertainty, easily causes delays, and is disadvantageous to the safe organization of production.

[0008] The utility model solves the above technical problems through the following technical means:

[0009] A mobile crawler drilling rig with a pneumatic motor comprises a crawler drilling rig body, a pneumatic motor and an oil pump. The pneumatic motor and the oil pump are connected together, and the rotating shaft of the pneumatic motor is coaxially connected with the rotating shaft of the oil pump. The air supply joint of the pneumatic motor is connected to a downhole pressure air pipe, and the oil pump is connected to the crawler drilling rig body.

[0010] The utility model drives the crawler drill rig through a pneumatic motor, and the on-site measured walking speed is about 6m / min, which can meet the short-distance movement needs of the flat tunnel section drilling rig, realize the movement of the crawler drill rig driven by compressed air in the underground system, and cooperate with electric energy drive to adapt to the movement of the crawler drill rig under complex conditions. It is easy to carry and improves the production organization efficiency. At the same time, the materials and equipment for making the device can be selected from other scrapped equipment and materials. The materials are easy to obtain and the cost is extremely low. The cost of manufacturing a device is about one thousand yuan, which has high safety and economic benefits.

[0011] Preferably, the bottom of the pneumatic motor is connected to the bottom of the oil pump via a base, so that the rotating shaft of the pneumatic motor is coaxially arranged with the rotating shaft of the oil pump.

[0012] Preferably, the base is a flat plate or a stepped plate, and the base includes a plurality of connecting holes, and the oil pump and the pneumatic motor are connected to the connecting holes through bolts.

[0013] Preferably, the rotating shaft of the pneumatic motor is connected to the rotating shaft of the oil pump via a connecting rod.

[0014] Preferably, both ends of the connecting rod are detachably connected to the rotating shaft of the pneumatic motor and the rotating shaft of the oil pump.

[0015] Preferably, the air supply connector of the pneumatic motor is connected to one end of the air duct, and the other end of the air duct is connected to the downhole pressure air duct.

[0016] Preferably, the crawler drilling rig body comprises an oil tank and a travel multi-way valve, the oil inlet of the oil pump is connected to the oil tank, and the oil outlet of the oil pump is connected to the travel multi-way valve.

[0017] The oil inlet of the oil pump is connected to the oil tank, and the oil outlet of the oil pump is connected to the travel multi-way valve to supply power oil to the travel multi-way valve of the crawler drilling rig.

[0018] Preferably, the front end of the oil inlet of the oil pump is also connected to an oil filter.

[0019] The advantages of the utility model are:

[0020] The utility model drives the crawler drill rig through a pneumatic motor, and the on-site measured walking speed is about 6m / min, which can meet the short-distance movement needs of the flat tunnel section drilling rig, realize the movement of the crawler drill rig driven by compressed air in the underground system, and cooperate with electric energy drive to adapt to the movement of the crawler drill rig under complex conditions. It is easy to carry and improves the production organization efficiency. At the same time, the materials and equipment for making the device can be selected from other scrapped equipment and materials. The materials are easy to obtain and the cost is extremely low. The cost of manufacturing a device is about one thousand yuan, which has high safety and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection between the pneumatic motor and the oil pump in the embodiment of the utility model;

[0022] Figure 2 It is a connection diagram of a mobile crawler drilling rig with a pneumatic motor according to an embodiment of the utility model;

[0023] Numbers in the figure:

[0024] 1. Pneumatic motor; 11. Air supply connector; 2. Oil pump; 3. Base; 4. Connecting rod; 5. Air duct. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] like Figure 1 As shown, a mobile crawler drilling rig with a pneumatic motor includes a crawler drilling rig body, a pneumatic motor 1, and an oil pump 2. The pneumatic motor 1 is connected to the oil pump 2, and the rotating shaft of the pneumatic motor 1 is coaxially connected to the rotating shaft 2 of the oil pump. The air supply connector 11 of the pneumatic motor 1 is connected to the downhole pressure air pipe, and the oil pump 2 is connected to the crawler drilling rig body.

[0028] Specifically, the bottom of the pneumatic motor 1 is connected to the bottom of the oil pump 2 via a base 3, so that the rotating shaft of the pneumatic motor 1 is coaxially arranged with the rotating shaft of the oil pump 2. In order to maintain the coaxial arrangement of the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2, the base can be a flat plate or a step plate. Assuming that after the rotating shaft of the pneumatic motor 1 is connected to the rotating shaft of the oil pump 2, there is a height difference between the bottom surface of the oil pump 2 and the bottom surface of the pneumatic motor 1, the height difference can be compensated by a step plate to ensure that the rotating shaft of the pneumatic motor 1 is reliably connected to the rotating shaft of the oil pump 2.

[0029] The base 3 includes a plurality of connection holes, and the oil pump 2 and the pneumatic motor 1 are connected to the connection holes by bolts. The oil pump 2 and the pneumatic motor 1 can be connected by opening or aligning the original bolt holes with the connection holes at the bottom, or by clamping the oil pump 2 and the pneumatic motor 1 with a U-shaped screw, and then connecting with the nuts after passing through the connection holes of the base 3, or by welding and other methods. The connection between the pneumatic motor 1, the oil pump 2 and the base 3 in this embodiment can be a fixed connection or a detachable connection.

[0030] In this embodiment, the rotating shaft of the pneumatic motor 1 is connected to the rotating shaft of the oil pump 2 through a connecting rod 4. More specifically, the two ends of the connecting rod 4 are detachably connected to the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2. It can be that sleeves are provided at both ends of the connecting rod 4, and the sleeves at both ends are respectively sleeved with the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2, and then locked by radial locking screws. It can also be that the sleeve and the sleeves at both ends are respectively threadedly connected with the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2, but it is necessary to ensure that the rotation direction of the pneumatic motor 1 and the oil pump 2 is adapted to the rotation direction of the thread, that is, the rotation of the pneumatic motor 1 and the oil pump 2 will not cause the thread to loosen. It can also be other detachable ways, which are not specifically limited in this embodiment. If in use, in order to improve the stability of use, the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2 can also be welded to the connecting rod 4. In this embodiment, the connecting rod 4 exists to adapt to the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2. Therefore, if the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2 are both axial structures, the two ends of the connecting rod 4 can be sleeves. If the ends of the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2 are other structures, the connecting rod 4 needs to be adaptively adjusted as long as the connecting rod can connect the rotating shaft of the pneumatic motor 1 and the rotating shaft of the oil pump 2 together.

[0031] The inventor has made theoretical calculations based on a crawler drill currently in use, and selected a hydraulic oil pump with a displacement of q pump = 20 mL / r and a total efficiency of the oil pump η pump = between 0.6 and 0.8;

[0032] Driven by the drilling rig's own motor with a rated speed of 1480r / min and a rated flow rate of Q = 29.6L / min for the hydraulic pump (i.e., oil pump 2);

[0033] At an inlet air pressure of 0.5MPa and a rated speed of 400r / min for the pneumatic motor 1, the rated flow rate of the hydraulic pump is 8L / min.

[0034] In the underground field test, when the pneumatic motor 1 drives the hydraulic pump to drive the ZDY4500LXY crawler drilling rig to move (the speed and pressure of the hydraulic pump are relatively constant), the working (outlet) pressure of the hydraulic pump is 5MPa. At this time, the driving power of the hydraulic pump (the total efficiency takes the minimum value of 0.6) is:

[0035]

[0036] The output power of the pneumatic motor can reach 2.5kW when the wind pressure is 0.5MPa, which is greater than the driving power of 1.11kW when the hydraulic pump drives the crawler drill to move in the horizontal tunnel.

[0037] According to the above calculation, the pneumatic motor can drive the crawler drilling rig when the wind pressure is 0.5MPa.

[0038] The pneumatic motor 1 has good reliability and can generate high power in a small size. It has high adaptability, small temperature rise, and the speed can change with the load until it stops due to overload. It can start and stop suddenly, and is particularly suitable for occasions with frequent starts, and the reversing is very easy. The casing is light and easy to transport. The starting torque is large and can start with load. The structure is simple and the pneumatic motor has a particularly long service life. It is less affected by the external environment. It is safe and explosion-proof. The pneumatic motor 1 does not produce sparks, overheating, explosions, short circuits (electricity) and other dangerous factors, and is particularly suitable for environments with flammable and explosive substances or high temperatures. Pneumatic motors are widely used in pneumatic equipment in mining areas. Combined with the characteristics of the pneumatic motor 1, the test risk is not high, and the pneumatic motor is easy to purchase and the cost is not high.

[0039] In this embodiment, the crawler drill is driven by the pneumatic motor 1, and the walking speed measured on site is about 6m / min, which can meet the short-distance movement needs of the horizontal tunnel section drilling rig, and realize the movement of the crawler drill driven by compressed air in the underground system, instead of electric energy drive. When used, it is in a power-free state to adapt to the movement of the crawler drill under complex conditions, which is easy to carry and improves the production organization efficiency. At the same time, the materials and equipment for making the device can be selected from other scrapped equipment and materials. The materials are easy to obtain and the cost is extremely low. The cost of manufacturing a device is about one thousand yuan, which has high safety and economic benefits.

[0040] Embodiment 2:

[0041] like Figure 1 , Figure 2 As shown, the air supply connector 11 of the pneumatic motor 1 is connected to one end of the air pipe 5, and the other end of the air pipe 5 is connected to the underground pressure air pipe. The air pipe 5 is a high-pressure rubber hose.

[0042] The crawler drilling rig body includes an oil tank and a travel multi-way valve. The oil inlet of the oil pump 2 is connected to the oil tank, and the oil outlet of the oil pump 2 is connected to the travel multi-way valve. The oil outlet of the oil pump is connected to the travel multi-way valve to supply power oil to the travel multi-way valve of the crawler drilling rig. The front end of the oil inlet of the oil pump 2 is also connected to an oil filter.

[0043] This embodiment uses the compressed air of the underground compressed air pipeline to connect the pneumatic motor 1 with a high-pressure hose. After the pneumatic motor 1 is started, the oil pump 2 sucks low-pressure oil from the oil tank through the oil suction filter and outputs high-pressure oil to the travel multi-way valve (the original travel multi-way valve on the drilling rig operating table), and the travel multi-way valve operates the travel motor to travel.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile crawler drilling rig with a pneumatic motor, characterized in that: It includes a crawler drilling rig body, a pneumatic motor, and an oil pump. The pneumatic motor is connected to the oil pump, and the rotating shaft of the pneumatic motor is coaxially connected to the rotating shaft of the oil pump. The air supply joint of the pneumatic motor is connected to the downhole pressure air pipe, and the oil pump is connected to the crawler drilling rig body.

2. The mobile crawler drilling rig with a pneumatic motor according to claim 1, characterized in that: The bottom of the pneumatic motor is connected to the bottom of the oil pump via a base, so that the rotating shaft of the pneumatic motor is coaxially arranged with the rotating shaft of the oil pump.

3. The mobile crawler drilling rig with a pneumatic motor according to claim 2, characterized in that: The base is a flat plate or a step plate, and includes a plurality of connection holes. The oil pump and the pneumatic motor are connected to the connection holes through bolts.

4. The mobile crawler drilling rig with a pneumatic motor according to claim 1, characterized in that: The rotating shaft of the pneumatic motor is connected to the rotating shaft of the oil pump through a connecting rod.

5. The mobile crawler drilling rig with a pneumatic motor according to claim 4, characterized in that: The two ends of the connecting rod are detachably connected to the rotating shaft of the pneumatic motor and the rotating shaft of the oil pump.

6. The mobile crawler drilling rig with a pneumatic motor according to claim 4, characterized in that: The air supply joint of the pneumatic motor is connected to one end of the air duct, and the other end of the air duct is connected to the underground pressure air duct.

7. The mobile crawler drilling rig with a pneumatic motor according to claim 1, characterized in that: The crawler drilling rig body comprises an oil tank and a traveling multi-way valve. The oil inlet of the oil pump is connected to the oil tank, and the oil outlet of the oil pump is connected to the traveling multi-way valve.

8. The mobile crawler drilling rig with a pneumatic motor according to claim 7, characterized in that: The front end of the oil inlet of the oil pump is also connected to an oil filter.

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