A mining explosion-proof engine output mechanism

Abstract

The present invention relates to the technical field of explosion-proof engines, and discloses an output mechanism of an explosion-proof engine for mining, comprising an oil cylinder, an axle box being arranged below the oil cylinder, a piston being slidably connected inside the oil cylinder, a connecting rod being rotatably connected at the lower end of the piston, the lower end of the connecting rod extending into the axle box, an end shaft being rotatably connected inside the axle box, one end of the connecting rod extending into the axle box being rotatably connected to a journal, and cranks being connected at both ends of the journal. The present invention sleeves a plate body on the crankshaft, and utilizes the connection between the sliding cavity and the inner groove so that the blocking column can move into the sliding cavity under the attraction of the induced electromagnetic field of the coil, so that the journal can move along the plane groove, and cooperates with the angle sensor to monitor the angle of the connecting rod, so that when the explosion-proof alarm system sounds an alarm, the connecting rod will push the piston to move upward, so as to prevent the residual oil and gas inside the oil cylinder from being compressed, and avoid the oil and gas temperature from rising, thereby preventing the engine from exploding.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof engines, in particular to an output mechanism of an explosion-proof engine for mining. Background Art

[0002] The modern era is an era of extreme energy consumption. Various energy sources are in short supply. The prices of energy sources such as coal and oil have risen sharply. Driven by social needs and profits, the amount of coal mining is increasing day by day, so the demand for high-yield and efficient modern mines is more urgent. Modern mines must use a large number of locomotives powered by diesel engines in their auxiliary transportation. Under the strict regulations of the state on coal mine safety and the economic benefits caused by energy shortages, relevant people are increasingly aware that the performance transformation of explosion-proof diesel engines, one of the underground power sources, is becoming more and more urgent. In the process of research and development, most researchers only consider the emission purification treatment of exhaust gas in the oil cylinder, and the output mechanism of the engine is not improved for the explosion-proof function. When the explosion-proof system sounds an alarm, the output mechanism of the engine still operates under the action of inertia. When the piston is in the compression or exhaust stroke, the explosion-proof system shuts off the valves of the intake and exhaust manifolds to prevent sparks from entering the intake and exhaust manifolds. The continuous upward movement of the piston causes the residual oil and gas in the oil cylinder to be compressed, and the temperature of the residual oil and gas rises, which easily leads to cylinder explosion. Summary of the invention

[0003] In view of the shortcomings of the existing mining explosion-proof engine output mechanism during use raised in the background technology, the present invention provides a mining explosion-proof engine output mechanism, which has the advantages of preventing the piston from moving upward and compressing the residual oil and gas in the cylinder when the explosion-proof system sounds an alarm, thereby avoiding explosion caused by the increase in the temperature of the residual oil and gas, thereby solving the problems raised in the above-mentioned background technology.

[0004] The present invention provides the following technical solution: an output mechanism of an explosion-proof engine for mining, comprising an oil cylinder, an axle box being arranged below the oil cylinder, a piston being slidably connected inside the oil cylinder, a connecting rod being rotatably connected to the lower end of the piston, the lower end of the connecting rod extending into the axle box, an end shaft being rotatably connected inside the axle box, one end of the connecting rod extending inside the axle box being rotatably connected to a journal, cranks being connected to both ends of the journal, a crankshaft being connected between two groups of journals connected by adjacent connecting rods, a drive plate being sleeved on the end shaft and the crankshaft, a sleeve column being arranged between the crank and the drive plate, a reset rod being arranged inside the axle box and located below the crank, and an angle sensor being mounted on the end shaft.

[0005] Preferably, the outer wall of the crank is provided with planar grooves on both sides of the connection point between the journal and the crank, the journal is slidably connected in the planar groove, an inner groove close to the journal is provided on the bottom wall of the planar groove, a stop column is slidably connected inside the inner groove, and a magnet is provided on the side of the stop column away from the connecting rod.

[0006] Preferably, the driving plate includes a plate body, and an outer circle groove and an inner circle groove are opened on both sides of the plate body. Coils perpendicular to the surface of the plate body are distributed in the outer circle groove and the inner circle groove, and the outer circle groove and the inner circle groove respectively correspond to the running trajectories of the two blocking columns in the plane groove.

[0007] Preferably, a sliding cavity is provided inside the sleeve column, two sleeve columns form a group and the two sleeve columns in a group are respectively connected to the two inner grooves of the crank, the sliding cavity is connected to the inner groove, and the ends of the two sleeve columns away from the crank are respectively slidably connected in the outer ring groove and the inner ring groove.

[0008] Preferably, through holes are formed at both ends of the crank, the diameter of the through holes is smaller than the diameter of the journal, and the reset rod is located below the through holes of the crank.

[0009] The present invention has the following beneficial effects:

[0010] 1. The present invention sleeves a plate body on the crankshaft and utilizes the connection between the sliding cavity and the inner groove to enable the blocking column to move into the sliding cavity under the attraction of the induced electromagnetic field of the coil, so that the journal can move along the plane groove, and cooperates with the angle sensor to monitor the connecting rod angle, so that when the explosion-proof alarm system sounds an alarm, the connecting rod will push the piston to move upward to prevent the residual oil and gas in the oil cylinder from being compressed and the oil and gas temperature from rising, thereby preventing the engine from exploding.

[0011] 2. The present invention enables the connecting rod to drive the piston to move downward to the bottom dead center and then continue to move downward a certain distance through the movement of the journal along the plane groove, thereby further increasing the space in the oil cylinder, reducing the air pressure in the oil cylinder, and having a suction effect on the sparks entering the intake manifold and the exhaust manifold, thereby reducing the probability of explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the structure of the crank and the driving plate of the present invention;

[0014] Figure 3 It is a partial cross-sectional view of the front side of the present invention;

[0015] Figure 4 It is a front view of the driving plate of the present invention.

[0016] In the figure: 1. Cylinder; 2. Piston; 3. Connecting rod; 4. Axle box; 5. End shaft; 6. Journal; 7. Crank; 701. Plane groove; 702. Inner groove; 703. Stop column; 704. Magnet; 8. Drive plate; 801. Plate body; 802. Outer groove; 803. Inner groove; 804. Coil; 9. Sleeve column; 901. Sliding cavity; 10. Angle sensor; 11. Reset rod; 12. Crankshaft. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1 A mining explosion-proof engine output mechanism, comprising a cylinder 1, a piston 2 is slidably connected to the inside of the cylinder 1, a connecting rod 3 is rotatably connected to the lower end of the piston 2, and an axle box 4 is also included. The connecting rod 3 extends to the inside of the axle box 4, and a crank connecting rod mechanism is arranged inside the axle box 4. The crank connecting mechanism is as shown in the attached Figure 1 As shown, it includes a rear end flange connected to the inner wall of the axle box 4 on the right side, the rear end flange is connected to the crankshaft 12, the crankshaft 12 is connected to the crank 7, the crank 7 is connected to the journal 6, the connecting rod 3 is movably sleeved on the journal 6, the crank 7 at the rightmost end is connected to the end shaft 5, and the crank-connecting rod mechanism is a relatively mature engine output mechanism. Therefore, the connection positions between the components of the crank-connecting rod mechanism in the above-mentioned prior art will not be repeated in this application. In addition, the present application also includes a controller, which is equipped with an explosion-proof alarm system. The explosion-proof alarm system is a prior art, which generally uses sensors to monitor the status of various positions of the engine and judges the safety of the engine through the controller. In the prior art, when the explosion-proof alarm system issues an alarm, the oil injection port, air jet port, intake and exhaust system installed on the oil cylinder 1 are generally closed, thereby cutting off the oil and gas supply to the oil cylinder 1 to achieve the explosion-proof function. In the above-mentioned explosion-proof process, there is no control effect on the movement of the piston 2, or direct braking of the end shaft 5 and the crankshaft 12. Due to the effect of inertia, the connecting rod 3, the journal 6, and the crank 7 will be severely damaged. To solve the above problems, refer to the attached Figure 2In the present application, a plane groove 701 is provided on the side of the crank 7 away from the connecting rod 3. There are two plane grooves 701, which are respectively located on both sides of the connection point between the journal 6 and the crank 7. Of course, the two plane grooves 701 can also be connected into one plane groove 701. The connection relationship between the journal 6 and the crank 7 is: the journal 6 can move along the plane groove 701 on the surface of the crank 7, but will not leave the plane groove 701. A transverse inner groove 702 is provided inside the plane groove 701. The inner diameter of the inner groove 702 is smaller than the inner diameter of the journal 6, so that when the journal 6 moves along the plane groove 701 and passes through the inner groove 702, it will not enter the inner groove 702; the inner groove 702 is provided inside the crank 7. There are two grooves 702, which are located on both sides of the original connection point between the journal 6 and the crank 7. The original connection point is the position where the journal 6 and the crank 7 are connected when the engine is operating normally. The inner groove 702 is slidably connected with a stopper 703. The stopper 703 slides along the inner groove 702 but will not escape from the inner groove 702. The two stopper columns 703 are pressed against both sides of the journal 6. When the engine is operating normally, a part of the stopper column 703 is sleeved in the inner groove 702, and a part is located outside the inner groove 702. The two stopper columns 703 fix the journal 6 at the position of the original connection point through the pressure of the inner wall of the inner groove 702. The inner end of the stopper column 703 is connected to a magnet 704.

[0019] See attached Figure 2 The crankshaft 12 is provided with a bearing, and the bearing is sleeved with a drive plate 8, so that the drive plate 8 is coaxially assembled with the crankshaft 12, and the two ends of the drive plate 8 are connected to the inner wall of the axle box 4, so that the drive plate 8 remains fixed relative to the axle box 4. Figure 2 , Attachment Figure 3 and attached Figure 4 The driving plate 8 is arranged on the side of the crank 7, and an outer ring groove 802 and an inner ring groove 803 are opened on both sides of the plate body 801. The outer ring groove 802 and the inner ring groove 803 are both T-shaped grooves. The inner walls of the outer ring groove 802 and the inner ring groove 803 are installed with coils 804, and the coils 804 are connected to the controller.

[0020] See attached Figure 2 The outer wall of the crank 7 is connected to a sleeve column 9 located at the inner groove 702, and a sliding cavity 901 is provided inside the sleeve column 9. The sliding cavity 901 is connected to the inner groove 702 and the sliding cavity 901 is coaxial with the inner groove 702. The end of the sleeve column 9 away from the crank 7 is slidably connected in the outer groove 802 and the inner groove 803. Figure 3When the piston 2 reciprocates along the inner wall of the oil cylinder 1, the connecting rod 3 pushes the crank 7 to rotate around the crankshaft 12 through the journal 6. The outer groove 802 is the running track of the stopper 703 above the journal 6, and the inner groove 803 is the running track of the stopper 703 below the journal 6. That is to say, the sleeve 9 connected to the inner groove 702 above the journal 6 is slidably connected in the outer groove 802, and the sleeve 9 connected to the inner groove 702 below the journal 6 is slidably connected in the inner groove 803. Since the inner end of the stopper 703 is connected to the magnet 704, during the normal operation of the engine, the coil 804 in the outer groove 802 and the inner groove 803 is supplied with current so that the generated induced magnetic field has a repulsive effect on the magnet 704, so that the stopper 703 is located in the inner groove 702, which plays a clamping role on the journal 6 and ensures the stability of the journal 6.

[0021] See attached Figure 1 , an angle sensor 10 is installed on the end shaft 5, and when the angle of the angle sensor 10 is set to zero, the connecting rod 3 is at the top dead center, that is, the connecting rod 3 is in a vertical state and at the upper limit position at this time, see the attached Figure 1 In the figure, when the piston 2 reciprocates along the inner wall of the cylinder 1, the connecting rod 3 rotates clockwise. From right to left, the angles of the connecting rod 3 in the cylinder 1 are 0 degrees, 90 degrees, 180 degrees, 270 degrees, 360 degrees, or 0 degrees, respectively, while the angle of the end shaft 5 detected by the angle sensor 10 is 0 degrees. That is to say, after setting the angle of the connecting rod 3 in the initial state, the angle difference between the connecting rod 3 and the end shaft 5 is fixed. Therefore, by measuring the rotation angle of the end shaft 5, the angle of the connecting rod 3 of each cylinder 1 can be known, and the calculation can be converted through the controller.

[0022] A reset rod 11 is installed inside the axle box 4 and is located below the through hole of the crank 7. The reset rod 11 is electrically connected to the controller. The reset rod 11 is used to push the journal 6 to its original position. The specific method is as follows: a reset rod 11 is set under each crank 7. According to the angle of the connecting rod 3 and the positional relationship between the connecting rod 3 and the crank 7 obtained by the controller and the angle sensor 10, the angle of the end shaft 5 when the through hole of the crank 7 is directly below is judged, and then the end shaft 5 is rotated, and at the corresponding angle, the reset rod 11 at the corresponding position is driven to extend, and the reset rod 11 passes through the through hole of the crank 7 to push the journal 6 upward to its original position.

[0023] The method of use of the present invention is as follows:

[0024] When the explosion-proof alarm system sounds an alarm, the deflection angle of the connecting rod 3 of each oil cylinder 1 is calculated according to the angle of the end shaft 5 monitored by the angle sensor 10 at this time. When the angle is between 0 degrees and 180 degrees, it indicates that the piston 2 in the oil cylinder 1 moves downward along the oil cylinder 1. At this time, the space above the piston 2 in the oil cylinder 1 increases, the air pressure decreases, and the temperature in the oil cylinder 1 can be reduced. At the same time, current is passed into the outer ring groove 802 so that the generated induced magnetic field attracts the magnet 704, causing the blocking column 703 to move into the inner groove 702 and the sliding cavity 901. When the angle of the connecting rod 3 is between 90 and 180 degrees, the journal 6 continues to move downward along the plane groove 701, and drives the piston 2 to move downward for a certain distance beyond the lower dead center through the blocking column 703, so that the spatial volume of the cylinder 1 is larger than that when the engine is working normally, so that the air pressure in the cylinder 1 is lower, and the temperature in the cylinder 1 is further reduced to prevent explosion; and after the space in the cylinder 1 is increased, negative pressure is generated, and the negative pressure air flows downward, which will draw out the flames that may enter the intake pipe and exhaust pipe downward to prevent backfire and explosion.

[0025] When the explosion-proof alarm system sounds an alarm, when the deflection angle of the connecting rod 3 is between 180 degrees and 360 degrees, the controller passes current into the inner groove 803 so that the generated induced magnetic field attracts the magnet 704, causing the blocking column 703 to move into the inner groove 702 and the sliding cavity 901. When the connecting rod 3 rotates to between 270 degrees and 360 degrees, since there is no blocking column 703 under the journal 6, under the inertia force of the rotation of the crank 7, the journal 6 moves along the plane groove 701, while the connecting rod 3 remains stationary, so The piston 2 is located at a fixed position on the inner wall of the cylinder 1 to prevent the piston 2 from moving upward along the inner wall of the cylinder 1 and causing the space of the cylinder 1 to shrink. When the connecting rod 3 rotates to 360 degrees, the angle is calculated again. At this time, the connecting rod 3 rotates clockwise. When the angle of the connecting rod 3 is between 0 degrees and 180 degrees, current is passed through the outer ring groove 802 so that the generated induced magnetic field attracts the magnet 704, thereby causing the journal 6 to move downward along the plane groove 701 and causing the piston 2 to pass the lower dead center and continue to move downward to the limit.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An output mechanism of an explosion-proof engine for mining, comprising an oil cylinder (1), an axle box (4) being arranged below the oil cylinder (1), a piston (2) being slidably connected inside the oil cylinder (1), a connecting rod (3) being rotatably connected to the lower end of the piston (2), the lower end of the connecting rod (3) extending into the axle box (4), characterized in that: The shaft box (4) is rotatably connected to an end shaft (5), one end of the connecting rod (3) extending into the shaft box (4) is rotatably connected to a journal (6), both ends of the journal (6) are connected to cranks (7), a crankshaft (12) is connected between two groups of journals (6) connected to adjacent connecting rods (3), a drive plate (8) is sleeved on the end shaft (5) and the crankshaft (12), a sleeve column (9) is provided between the crank (7) and the drive plate (8), a reset rod (11) is provided inside the shaft box (4) and is located below the crank (7), and an angle sensor (10) is installed on the end shaft (5); The outer wall of the crank (7) is provided with planar grooves (701) located on both sides of the connection point between the journal (6) and the crank (7); the journal (6) is slidably connected in the planar groove (701); an inner groove (702) close to the journal (6) is provided on the bottom wall of the planar groove (701); a stopper (703) is slidably connected inside the inner groove (702); a magnet (704) is provided on the side of the stopper (703) away from the connecting rod (3); The driving plate (8) comprises a plate body (801), and both sides of the plate body (801) are provided with an outer ring groove (802) and an inner ring groove (803), and coils (804) perpendicular to the surface of the plate body (801) are distributed in the outer ring groove (802) and the inner ring groove (803), and the outer ring groove (802) and the inner ring groove (803) respectively correspond to the running tracks of two blocking columns (703) in the plane groove (701); A sliding cavity (901) is provided inside the sleeve column (9), two sleeve columns (9) form a group, and the two sleeve columns (9) in a group are respectively connected to the two inner grooves (702) of the crank (7), the sliding cavity (901) is communicated with the inner groove (702), and the ends of the two sleeve columns (9) away from the crank (7) are respectively slidably connected in the outer ring groove (802) and the inner ring groove (803).

2. The output mechanism of a mining explosion-proof engine according to claim 1, characterized in that: Through holes are provided at both ends of the crank (7), the diameter of the through holes being smaller than the diameter of the journal (6), and the reset rod (11) is located below the through holes of the crank (7).

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