Injector

Abstract

To provide an injector capable of preventing an injection material from leaking from a storage part with a simple structure.SOLUTION: An injector 1 is a device for injecting an injection material M1 between a rail and a wheel. The injector 1 includes: a mixing pipe part 7 for mixing the injection material M1 with compressed gas G; an inflow pipe part 9 for making a part of the compressed gas G flowing into the mixing pipe part 7 flow into a storage part 6R for storing the injection material M1; and a conveying pipe part 15 for conveying the injection material M1 to the mixing pipe part 7 from a lower side toward an upper side by the compressed gas G so as to make the injection material M1 flow into the mixing pipe part 7 from inside of the storage part 6R together with the compressed gas G flowing into the storage part 6R from the inflow pipe part 9.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an injection device for injecting an injection substance between a rail and a wheel. [Background technology]

[0002] In railway vehicles, injection devices that inject adhesive agents such as ceramics or silica sand between the rails and wheels are attached to the bogies to prevent the vehicle from spinning or skidding and ensure braking distance. A conventional injection device includes a storage container for the adhesive agent, an air inlet pipe for introducing compressed air, a mixing tube that draws the adhesive agent from the storage container through a suction hole and mixes the adhesive agent with the compressed air, a nozzle that injects compressed air from the air inlet pipe into the mixing tube, an injection pipe that injects the adhesive agent and compressed air from the mixing tube, and an air vent pipe that connects the mixing tube to the storage container (see, for example, Patent Document 1). In this conventional injection device, a suction hole is formed below the mixing tube so as to penetrate the mixing tube. The adhesive agent in the storage container below the suction hole is sucked up into the mixing tube through the suction hole, and the adhesive agent and compressed air are mixed in the mixing tube. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4242095 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional injection devices vibrate along with the bogie of a railway vehicle when the vehicle travels on the tracks. Therefore, even when compressed air is not being supplied to the mixing tube and the railway vehicle is vibrating, conventional injection devices can cause the adhesive agent in the storage container to rise from the suction hole of the mixing tube and spontaneously leak into the mixing tube. As a result, conventional injection devices have the problem of spontaneous leakage of the adhesive agent from the storage container, resulting in unnecessary consumption of the adhesive agent in the storage container. Furthermore, conventional injection devices can cause the adhesive agent that leaks into the mixing tube to migrate to the upstream throttle section, pass through the throttle section, and move upstream of the mixing tube. As a result, when compressed air is supplied to the mixing tube, the adhesive agent accumulated in the upstream side of the mixing tube is pushed toward the throttle section, causing the movable throttle section to become clogged with the adhesive agent.

[0005] An object of the present invention is to provide an injection device that can prevent leakage of an injection substance from a container with a simple structure. [Means for solving the problem]

[0006] The present invention solves the above problems by the means described below. Although the description will be given with reference numerals corresponding to the embodiments of the present invention, the present invention is not limited to these embodiments. The invention of claim 1 is a rail (R R ,R L ) and wheels (W R ,W L ), the injection device (1) comprising: a mixing pipe section (7) in which the injection material and compressed gas (G) are mixed; an inlet pipe section (9) in which a part of the compressed gas flowing into the mixing pipe section flows into storage sections (6R, 6L) in which the injection material is stored; and a transport pipe section (15) in which the compressed gas transports the injection material from below to above the mixing pipe section so that the injection material flows from the storage section into the mixing pipe section together with the compressed gas that has flowed from the inlet pipe section into the storage section.

[0007] The invention of claim 2 is the injection device of claim 1, characterized in that, as shown in Figs. 3, 4 and 6, it further comprises a flow rate adjusting section (8) that adjusts the flow rate of the compressed gas flowing into the mixing pipe section, a flow rate adjusting section (11) that adjusts the flow rate of the compressed gas flowing through the mixing pipe section and the flow rate of the compressed gas flowing through the inlet pipe section, and a discharge pipe section (14) that discharges a portion of the compressed gas that has flowed from the inlet pipe section into the storage section from the storage section to the mixing pipe section.

[0008] The invention of claim 3 is the injection device of claim 2, characterized in that, as shown in Figure 4, the flow rate adjustment unit, the flow rate adjustment unit, the discharge pipe unit and the conveying pipe unit have their inner diameters (d1 to d4) set to predetermined values ​​depending on the injection speed of the injection material.

[0009] The invention of claim 4 is the injection device of claim 2, characterized in that, as shown in Figure 4, the flow rate adjustment unit, the flow rate adjustment unit, the discharge pipe unit and the conveying pipe unit have their inner diameters (d1 to d4) set to predetermined values ​​depending on the injection amount of the injection material.

[0010] The invention of claim 5 is an injection device according to claim 2, characterized in that, as shown in FIG. 4, the flow rate adjusting unit, the flow rate adjusting unit, the discharge pipe unit and the conveying pipe unit have their inner diameters (d1 to d4) set to predetermined values ​​depending on the type of the injection object. [Effects of the Invention]

[0011] According to this invention, leakage of the injection substance from the container can be prevented with a simple structure. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view schematically illustrating an injection device according to an embodiment of the present invention. [Figure 2]1 is a configuration diagram that schematically illustrates an injection device according to an embodiment of the present invention; [Figure 3] FIG. 2 is a vertical cross-sectional view of a housing portion of the injection device according to the embodiment of the present invention. [Figure 4] FIG. 2 is a partially enlarged longitudinal sectional view showing a mixing tube portion of the injection device according to the embodiment of the present invention. [Figure 5] FIG. 4 is a cross-sectional view showing a state cut along line VV in FIG. [Figure 6] 2 is a schematic diagram illustrating the flow of compressed gas and an injectate in an injection device according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The track R shown in Figures 1 and 2 is a path (track) on which railway vehicles run. R ,W L A pair of rails R that guide the R ,R L Equipped with Rail R R ,R L is the wheel W R ,W L The rail R1 has a top surface (top surface of the head) R1 that directly supports the rail R, and an inner side surface R2 that is continuous with the top surface R1. R ,R L and wheels W R ,W L A normal force W and a tangential force F act at the contact point P, and the proportional coefficient of the tangential force F to the normal force W (tangential force coefficient (traction coefficient)) F / W is the coefficient of friction, and the maximum value of this friction coefficient is the coefficient of adhesion.

[0014] The wheel W shown in FIGS. R ,W L is the left and right rail R R ,R L The wheel W is a part that comes into rolling contact with the wheel. R ,W L As shown in Figure 1, the rail R R ,RL When a railway vehicle passes through a sharp curve, the wheel tread W1 comes into contact with the top surface R1 of the outer rail and receives frictional resistance. R ,R L and a flange surface W2 that comes into contact with the inner head side surface R2 of the bearing and receives frictional resistance.

[0015] The injection device 1 shown in FIGS. 1 and 2 is R ,R L and wheels W R ,W L The injector 1 is an on-board injector that injects the injector M1 from the side of a railway vehicle traveling on the track R, and moves together with the railway vehicle while being mounted on the railway vehicle. The injector 1 is injecting the injector M1 from the front side of the railway vehicle in the traveling direction between the rail R and the injector. R ,R L and wheels W R ,W L When a railway vehicle is traveling in the direction opposite to the arrow direction shown in FIG. 1, the injection device 1 injects the injection material M1 between the rail R and the rail R from the direction opposite to the arrow direction shown in FIG. R ,R L and wheels W R ,W L 1 and 2, a flow path 3, opening / closing units 4R and 4L, flow paths 5R and 5L, storage units 6R and 6L shown in FIGS. 1 to 5, a mixing pipe unit 7 shown in FIGS. 3 to 5, a flow rate adjusting unit 8 shown in FIGS. 3 and 4, an inlet pipe unit 9 shown in FIGS. 3 to 5, a filter unit 10 shown in FIGS. 3 and 4, a flow rate adjusting unit 11, an injection amount adjusting unit 12 shown in FIGS. 3 to 5, a filter unit 13, a discharge pipe unit 14, a conveying pipe unit 15 shown in FIGS. 3 and 4, flow paths 16R and 16L, injection units 17R and 17L, and a control device 18.

[0016] 1 and 2, the inner diameters d1 to d4 of the flow velocity adjusting unit 8, inlet pipe 9, flow rate adjusting unit 11, discharge pipe 14, and transport pipe 15 shown in Fig. 4 are set according to the injection speed of the injection material M1. In the injection device 1, the inner diameters d1 to d4 of the flow velocity adjusting unit 8, inlet pipe 9, flow rate adjusting units 11, 12, discharge pipe 14, and transport pipe 15 are set to optimal values ​​according to the running speed of the railway vehicle so that, for example, the injection speed of the injection material M1 is relatively high when the railway vehicle is running at a high speed, the injection speed of the injection material M1 is relatively low when the railway vehicle is running at a low speed, and the injection speed of the injection material M1 is medium when the railway vehicle is running at a medium speed.

[0017] In the injection device 1, inner diameters d1 to d4 of the flow velocity adjusting unit 8, the inlet pipe 9, the flow rate adjusting unit 11, the discharge pipe 14, and the transport pipe 15 shown in Fig. 4 are set according to the injection amount of the injection material M1. In the injection device 1, the inner diameters d1 to d4 of the flow velocity adjusting unit 8, the inlet pipe 9, the flow rate adjusting unit 11, the discharge pipe 14, and the transport pipe 15 shown in Fig. 4 are set to optimal values ​​according to the operating line of the railway vehicle so that, for example, the injection amount of the injection material M1 is relatively low when the railway vehicle is operated on a line with relatively many flat sections, and the injection amount of the injection material M1 is relatively large when the railway vehicle is operated on a line with relatively many gradient sections.

[0018] In the spraying device 1, inner diameters d1 to d4 of the flow rate adjusting unit 8, inlet pipe 9, flow rate adjusting unit 11, discharge pipe 14, and conveying pipe 15 shown in FIG. 4 are set according to the type of the spray material M1. Here, the type of the spray material M1 refers to, for example, the material of the spray material M1, such as alumina, silica sand, or ceramics, the size of the particle size, or the specific gravity. In the spraying device 1, for example, when there are multiple types of storage units 6R, 6L and the type of spray material M1 to be used is specified for each storage unit 6R, 6L, the inner diameters d1 to d4 of the flow rate adjusting unit 8, inlet pipe 9, flow rate adjusting units 11, 12, discharge pipe 14, and conveying pipe 15 are set to optimal values ​​according to the type of the spray material M1 so that any type of spray material M1 can be used in the storage units 6R, 6L.

[0019] The ejection object M1 is the rail R R ,R Land wheels W R ,W L The injection material M1 is a material injected between the rail R R ,R L and wheels W R ,W L The injection material M1 is an adhesive agent that improves the adhesion coefficient between the injection material M1 and the lower edge of the mixing tube 7 of the injection device 1. The injection material M1 is, for example, ceramic particles such as alumina that have the function of increasing the adhesion coefficient (friction coefficient). As shown in FIG. 3, the injection material M1 can be filled to a height that reaches the lower edge of the mixing tube 7 of the injection device 1, with the specified capacity limit (so-called full tank).

[0020] The gas injection unit 2 shown in FIGS. 1 and 2 is a part that injects compressed gas G. The gas injection unit 2 includes an air tank that stores compressed gas G, such as compressed air, and a compressor supplies gas into the air tank. When the pressure of the gas in the air tank falls below a predetermined value, the gas injection unit 2 supplies gas into the air tank by the compressor until the pressure of the gas in the air tank reaches the predetermined value. The gas injection unit 2 supplies compressed gas G from the air tank to the flow path 3 based on an operation start signal output by the control device 18. The flow path 3 is a conduit through which the compressed gas G flows. The upstream side of the flow path 3 is connected to the gas injection unit 2, and the downstream side branches into two paths that are connected to the opening / closing units 4R and 4L, respectively.

[0021] The opening / closing units 4R, 4L are parts that open and close the flow paths 5R, 5L. The opening / closing units 4R, 4L are, for example, opening / closing valves such as solenoid valves that generate magnetic force when a current flows to open and close the flow paths 5R, 5L. The opening / closing units 4R, 4L are installed upstream of the flow paths 5R, 5L, respectively, and open and close the flow paths 5R, 5L based on an opening / closing signal output by the control device 18.

[0022] The flow paths 5R, 5L are conduits through which the compressed gas G that has passed through the opening / closing units 4R, 4L flows. The flow path 5R is connected to the opening / closing unit 4R on the upstream side and to the storage unit 6R on the downstream side. The flow path 5L is connected to the opening / closing unit 4L on the upstream side and to the storage unit 6L on the downstream side. The flow paths 5R, 5L are both formed to have the same cross-sectional area so that the flow rates of the compressed gas G flowing through these flow paths 5R, 5L are the same.

[0023] 1 to 5 are portions for accommodating the ejected object M1. As shown in FIGS. 1 and 2, the accommodating portion 6R is located on the right rail R R and the wheel on the right side of the direction of travel W R The storage section 6L stores the injection material M1 between the left rail R L and the wheel on the left side of the direction of travel W L The storage units 6R, 6L store the injection material M1 to be sprayed between them. The storage units 6R, 6L are, for example, tanks that store the injection material M1. When compressed gas G that has passed through the opening / closing units 4R, 4L flows into the storage units 6R, 6L from the flow paths 5R, 5L, the storage units 6R, 6L discharge the injection material M1 together with the compressed gas G into the flow paths 16R, 16L. As shown in FIGS. 3 and 4, the storage units 6R, 6L can be filled with the injection material M1 so that a space is formed above the storage units 6R, 6L. The storage units 6R, 6L shown in FIGS. 1 and 2 have the same structure, and the following description will focus on one storage unit 6R, and a detailed description of the other storage unit 6L will be omitted. The storage unit 6R includes a main body 6a shown in FIGS. 3 to 5, a lid 6b shown in FIGS. 3 and 4, and an attachment unit 6c shown in FIG. 5.

[0024] The main body 6a shown in Figures 3 to 5 constitutes the tank main body of the storage unit 6R. The main body 6a includes a side 6d shown in Figures 3 to 5, a bottom 6e shown in Figure 3, an opening 6f shown in Figures 3 and 4, a discharge hole 6g shown in Figure 3, and a blocking portion 6h. The side 6d shown in Figures 3 to 5 is a cylindrical portion that constitutes the side surface of the main body 6a. The bottom 6e shown in Figure 3 is a disc-shaped portion that constitutes the bottom surface of the main body 6a. The opening 6f shown in Figures 3 and 4 is a portion that opens the upper side of the main body 6a. The discharge hole 6g shown in Figure 3 is a portion that discharges the injection material M1 in the storage unit 6R. The discharge hole 6g is a through-hole that penetrates the bottom 6e and is formed directly below the lower end opening 15a of the conveying pipe 15 shown in Figures 3 and 4. The blocking portion 6h shown in Figure 3 is a portion that blocks the discharge hole 6g. The blocking portion 6h is detachably attachable to the discharge hole 6g and is a plug or the like having a male thread portion that meshes with a female thread portion formed on the inner circumferential surface of the discharge hole 6g.

[0025] The lid portion 6b shown in Figures 3 and 4 is a portion that opens and closes the main body portion 6a. The lid portion 6b is removably attached to the main body portion 6a so as to open and close the opening 6f of the main body portion 6a, and is opened and closed when the injection material M1 is filled into the main body portion 6a through the opening 6f. The attachment portion 6c shown in Figure 3 is a portion that removably attaches the main body portion 6a. The attachment portion 6c is a plate-like member that is fixed integrally with the main body portion 6a to the back surface of the main body portion 6a, and is removably attached to the bogie frame of the bogie of the railway vehicle.

[0026] The mixing pipe 7 shown in FIGS. 3 to 5 is a portion where the jets M1 and the compressed gas G are mixed. The mixing pipe 7 mixes the compressed gas G flowing into the mixing pipe 7 with the jets M1 flowing in from the conveying pipe 15, and discharges a mixture M2 of the compressed gas G and the jets M1. The mixing pipe 7 discharges the mixture M2 of the compressed gas G and the jets M1 flowing in from the conveying pipe 15 to the flow path 16R by the compressed gas G flowing into the mixing pipe 7. As shown in FIGS. 3 to 5, the mixing pipe 7 has a linear appearance and is a cylindrical member of a predetermined length extending horizontally. As shown in FIGS. 3 and 4, the mixing pipe 7 is fixed integrally with the main body 6a so as to penetrate therethrough. As shown in FIGS. 2 to 5, the mixing pipe 7 is piped inside the main body 6a and is disposed above the main body 6a so as to be parallel to the bottom 6e as shown in FIG. 3. The mixing pipe section 7 includes a compressed gas supply section 7a, a compressed gas passage section 7b, an inlet pipe connection section 7c, a discharge pipe connection section 7d, a conveying pipe connection section 7e, a mixture passage section 7f, and a mixture discharge section 7g, as shown in Figures 3 and 4.

[0027] The compressed gas supply section 7a shown in Figures 3 and 4 is a section that supplies compressed gas G to the mixing pipe section 7. The compressed gas supply section 7a is attached to the upstream end of the mixing pipe section 7, and is connected to the downstream end of the flow path 5R shown in Figures 1 and 2. As shown in Figures 3 and 4, the compressed gas supply section 7a is a pipe joint that can be detachably connected to the end of the piping that makes up the flow path 5R. The compressed gas supply section 7a has a male thread formed at its tip that meshes with a female thread formed at the upstream end of the compressed gas passing section 7b.

[0028] The compressed gas passing section 7b is a section through which the compressed gas G passes. The compressed gas passing section 7b is a pipe through which the compressed gas G supplied from the compressed gas supply section 7a flows. The upstream end of the compressed gas passing section 7b is connected to the downstream end of the compressed gas supply section 7a, and the downstream end of the compressed gas passing section 7b is connected to the upstream end of the mixture passing section 7f. The inner peripheral surface of the downstream end of the compressed gas passing section 7b is detachably fitted to the outer peripheral surface of the upstream end of the mixture passing section 7f such that the center lines of the compressed gas passing section 7b and the mixture passing section 7f coincide with each other.

[0029] The inlet pipe connecting portion 7c is a portion to which the inlet pipe section 9 is connected. The inlet pipe connecting portion 7c is a through-hole that passes through the upper downstream side of the mixing pipe section 7, and is connected to the lower end opening 9a of the inlet pipe section 9. The inlet pipe connecting portion 7c has a female thread formed on its inner periphery that engages with a male thread formed on the outer periphery of the lower end opening 9a of the inlet pipe section 9.

[0030] The discharge pipe connecting portion 7d is a portion to which the discharge pipe section 14 is connected. The discharge pipe connecting portion 7d is a through-hole that penetrates the upper upstream portion of the mixing pipe section 7, and is connected to the lower end opening 14a of the discharge pipe section 14. The discharge pipe connecting portion 7d has a female thread formed on the inner periphery thereof that engages with a male thread formed on the outer periphery of the lower end opening 14a of the discharge pipe section 14.

[0031] The conveying pipe connecting portion 7e is a portion to which the conveying pipe section 15 is connected. The conveying pipe connecting portion 7e is a through-hole that penetrates the lower part of the downstream side of the mixing pipe section 7, and the upper end opening 15b of the conveying pipe section 15 is connected slightly downstream of the discharge pipe connecting portion 7d. The conveying pipe connecting portion 7e has a female thread portion formed on the inner periphery of this conveying pipe connecting portion 7e that engages with a male thread portion formed on the outer periphery of the upper end opening 15b of the conveying pipe section 15.

[0032] The mixture passing section 7f is a section through which the mixture M2 passes. The mixture passing section 7f is a pipe through which the compressed gas G injected from the flow rate adjustment section 11 and the mixture M2 flowing in from the conveying pipe section 15 are mixed, and the mixture M2 is discharged to the mixture discharge section 7g. The upstream end of the mixture passing section 7f is connected to the downstream end of the compressed gas passing section 7b, and the downstream end of the mixture passing section 7f is connected to the mixture discharge section 7g.

[0033] The mixture discharge portion 7g is a portion that discharges the mixture M2 from the mixing pipe portion 7. The mixture discharge portion 7g is formed at the downstream end of the mixing pipe portion 7, and is connected to the upstream end of the flow path 16R shown in FIGS. 1 and 2. The mixture discharge portion 7g is a pipe joint that can be detachably connected to the end of the piping that makes up the flow path 16R. The mixture discharge portion 7g has a male thread formed thereon that meshes with a female thread formed on the side portion 6d of the storage portion 6R.

[0034] The flow rate adjusting unit 8 shown in FIGS. 3 and 4 adjusts the flow rate of the compressed gas G flowing into the mixing tube 7. The flow rate adjusting unit 8 reduces the cross-sectional area of ​​the flow of the compressed gas G flowing in from the compressed gas supply unit 7a and injects the compressed gas G into the compressed gas passing unit 7b. The flow rate adjusting unit 8 adjusts the flow rate of the compressed gas G by adjusting the basic flow rate of the compressed gas G flowing in from the compressed gas supply unit 7a. The flow rate adjusting unit 8 is a cylindrical member, and a flow path through which the compressed gas G flows is formed inside the flow rate adjusting unit 8 so as to connect the flow path on the compressed gas supply unit 7a side with the flow path on the compressed gas passing unit 7b side. As shown in FIG. 4, the flow rate adjusting unit 8 is formed so that the inner diameter d1 of the flow rate adjusting unit 8 is smaller than the inner diameter of the compressed gas supply unit 7a so that the cross-sectional area of ​​the flow path in the compressed gas supply unit 7a is reduced. The flow rate adjusting unit 8 is an orifice-like throttle mechanism that reduces the pressure and increases the flow rate by throttling the flow of the compressed gas G. As shown in Figures 3 and 4, the flow rate adjusting unit 8 is housed within the compressed gas supply unit 7a so as to block the compressed gas supply unit 7a. The flow rate adjusting unit 8 is arranged so that the center line of the flow rate adjusting unit 8 coincides with the center line of the mixing tube unit 7.

[0035] As shown in FIG. 4, the flow rate adjusting unit 8 has an inner diameter d1 set to a predetermined value depending on the injection speed, injection amount, or type of the injection material M1 injected from the mixing tube unit 7. The flow rate adjusting unit 8 sets the adjustment amount of the flow rate adjusting unit 8 to a predetermined value by changing the inner diameter (throttle diameter) d1 shown in FIG. 4. The flow rate adjusting unit 8 is provided with a plurality of types of throttles with different inner diameters d1. The flow rate adjusting unit 8 is replaced with a throttle having an optimal inner diameter d1 depending on the injection speed, injection amount, or type of the injection material M1. For example, when adjusting the injection speed of the injection material M1 to a relatively high speed, a throttle with a relatively large inner diameter d1 is selected for the flow rate adjusting unit 8. On the other hand, when adjusting the injection speed of the injection material M1 to a relatively low speed, a throttle with a relatively small inner diameter d1 is selected for the flow rate adjusting unit 8. The flow rate adjustment unit 8 has a male thread formed on its outer periphery that mates with a female thread formed on the inner periphery of the compressed gas supply unit 7a so that it can be detachably attached to the compressed gas supply unit 7a. The flow rate adjustment unit 8 has a fitting hole at its upstream end that detachably fits with a tool inserted from an upstream opening of the compressed gas supply unit 7a. The flow rate adjustment unit 8 can be detached by rotating it with a tool around the center line of the flow rate adjustment unit 8, and can be replaced with any orifice having a different inner diameter d1.

[0036] The inlet pipe 9 shown in FIGS. 3 to 5 is a section that allows a portion of the compressed gas G flowing into the mixing pipe 7 to flow into the accommodation section 6R. As shown in FIGS. 3 and 4, the inlet pipe 9 allows the compressed gas G to flow into the space between the injection object M1 and the accommodation section 6R. The inlet pipe 9 is a component having a mechanism for adjusting the flow rate of air passing through it, and is a branch pipe branching upward from the mixing pipe 7. The inlet pipe 9 is piped inside the main body 6a and, as shown in FIG. 3, is disposed above the main body 6a so as to be perpendicular to the bottom 6e and parallel to the side 6d. The inlet pipe 9 is a pipe that connects the interior of the accommodation section 6R and the interior of the mixing pipe 7 so that the compressed gas G flows from the mixing pipe 7 into the accommodation section 6R and the pressure in the accommodation section 6R is substantially the same as the pressure in the mixing pipe 7. As shown in FIGS. 3 and 4, the inlet pipe 9 has a lower end opening 9a and an upper end opening 9b. The lower end opening 9a is a portion that opens into the mixing pipe section 7 and is connected to the inlet pipe connecting portion 7c of the mixing pipe section 7. The upper end opening 9b is a portion that opens into the storage section 6R and protrudes above the surface of the injection material M1.

[0037] 3 and 4 is a part that allows the compressed gas G to flow from the compressed gas supply section 7a to the compressed gas passage section 7b and prevents the injectable material M1 from flowing from the compressed gas passage section 7b into the compressed gas supply section 7a. The filter section 10 prevents the injectable material M1 that has flowed from the conveying pipe section 15 into the mixing pipe section 7 from flowing back and entering the compressed gas supply section 7a through the flow rate adjustment section 11. The filter section 10 is detachably attached to the flow path downstream of the compressed gas supply section 7a so as to block this flow path.

[0038] The flow rate adjustment unit 11 adjusts the flow rate of the compressed gas G flowing through the mixing pipe section 7 and the flow rate of the compressed gas G flowing through the inlet pipe section 9. The flow rate adjustment unit 11 reduces the cross-sectional area of ​​the flow of the compressed gas G flowing in from the compressed gas supply section 7a and causes it to flow out to the mixture passing section 7f. The flow rate adjustment unit 11 distributes the compressed gas G flowing in from the compressed gas supply section 7a at a predetermined ratio between the compressed gas G flowing in through the mixing pipe section 7 and the compressed gas G flowing through the inlet pipe section 9. For example, when the flow rate of the compressed gas G flowing in from the compressed gas supply section 7a is 100%, the flow rate adjustment unit 11 adjusts the flow rate of the compressed gas G flowing through the mixing pipe section 7 to α% and the flow rate of the compressed gas G flowing through the inlet pipe section 9 to (100-α)%. For example, if the flow rate adjustment unit 11 relatively increases the proportion of compressed gas G flowing through the inlet pipe section 9, it becomes difficult for the injection amount adjustment unit 12 to adjust the injection amount of compressed gas G, and even a slight adjustment by the injection amount adjustment unit 12 results in a large change in the injection amount of compressed gas G. On the other hand, if the flow rate adjustment unit 11 relatively decreases the proportion of compressed gas G flowing through the inlet pipe section 9, it becomes easy for the injection amount adjustment unit 12 to adjust the injection amount of compressed gas G, and it becomes possible to finely adjust the injection amount of compressed gas G.

[0039] The flow rate control unit 11 is a cylindrical member and is disposed between the inlet pipe connection portion 7c and the outlet pipe connection portion 7d of the mixing tube portion 7. The flow rate control unit 11 has a flow path through which the compressed gas G flows, connecting the flow path on the compressed gas passage portion 7b side with the flow path on the mixture passage portion 7f side. As shown in FIG. 4, the flow rate control unit 11 has an inner diameter d2 smaller than the inner diameter of the compressed gas passage portion 7b so as to reduce the cross-sectional area of ​​the flow path within the compressed gas passage portion 7b. The flow rate control unit 11 is an orifice-like throttle mechanism that throttles the flow of the compressed gas G, thereby reducing the pressure and increasing the flow rate. The flow rate control unit 11 is housed within the compressed gas passage portion 7b so as to block the compressed gas passage portion 7b. The flow rate control unit 11 is disposed so that the center line of the flow rate control unit 11 coincides with the center line of the mixing tube portion 7.

[0040] As shown in FIG. 4, the flow rate adjusting unit 11 has an inner diameter d2 set to a predetermined value depending on the injection speed, injection amount, or type of the injection material M1 injected from the mixing tube 7. The adjustment amount of the flow rate adjusting unit 11 is set to a predetermined value by replacing the flow rate adjusting unit 11 with a part having a different inner diameter (throttle diameter) d2 shown in FIG. 4. A plurality of types of throttles with different inner diameters d2 are prepared for the flow rate adjusting unit 11. The flow rate adjusting unit 11 is replaced with a throttle having an optimal inner diameter depending on the injection speed, injection amount, or type of the injection material M1. For example, when adjusting the injection speed of the injection material M1 to a relatively high speed, a throttle with a relatively small inner diameter d2 is selected for the flow rate adjusting unit 11. On the other hand, when adjusting the injection speed of the injection material M1 to a relatively low speed, a throttle with a relatively large inner diameter d2 is selected for the flow rate adjusting unit 11. The flow rate adjustment unit 11 has a male thread formed on its outer periphery that engages with a female thread formed on the inner periphery of the compressed gas passage 7b so that the flow rate adjustment unit 11 can be detachably attached to the compressed gas passage 7b. The flow rate adjustment unit 11 has a fitting hole at its downstream end into which a tool inserted from an opening on the downstream side of the mixture discharge unit 7g can be detachably fitted. The flow rate adjustment unit 11 can be detached by rotating it with a tool about the center line of the flow rate adjustment unit 11 as the rotation center, and can be replaced with any orifice having a different inner diameter d2.

[0041] The injection amount adjustment unit 12 adjusts the injection amount of the compressed gas G flowing from the inlet pipe 9 into the storage unit 6R. The injection amount adjustment unit 12 adjusts the injection amount of the compressed gas G by adjusting the flow rate of the compressed gas G flowing from the inlet pipe 9 into the storage unit 6R. The injection amount adjustment unit 12 adjusts the injection amount of the compressed gas G flowing into the storage unit 6R by changing the cross-sectional area of ​​the flow of the compressed gas G in the inlet pipe 9. The injection amount adjustment unit 12 has a flow path through which the compressed gas G flows. The injection amount adjustment unit 12 is, for example, a flow rate adjustment valve such as a needle valve that can accurately adjust the flow rate of the compressed gas G flowing through the inlet pipe 9 in a minute range. The injection amount adjustment unit 12 adjusts the injection amount of the injection object M by adjusting the flow rate of the compressed gas G for transporting the injection object M into the outlet pipe 14. The injection amount adjustment unit 12 adjusts the flow rate of the compressed gas G after, for example, setting the inner diameters d1 to d4 of the flow velocity adjustment unit 8, the inlet pipe 9, the flow rate adjustment unit 11, the outlet pipe 14, and the conveying pipe 15. The injection amount adjustment unit 12 is disposed at a bent portion of the inlet pipe 9 and changes the opening of the inlet pipe 9 to change the injection amount of the compressed gas G flowing into the storage unit 6R. When increasing the injection amount of the injection material M1, the injection amount adjustment unit 12 increases the opening of the inlet pipe 9 to increase the flow rate of the compressed gas G flowing into the storage unit 6R, and when decreasing the injection amount of the injection material M1, the injection amount adjustment unit 12 decreases the opening of the inlet pipe 9 to decrease the flow rate of the compressed gas G flowing into the storage unit 6R. As shown in FIG. 4, the injection amount adjustment unit 12 includes a valve body 12a, a valve seat 12b, a valve stem 12c, and a cover 12d.

[0042] The valve element 12a shown in FIG. 4 is a part that opens and closes the flow path. The valve element 12a is a shaft-like member with a needle-like tip. The valve seat 12b is a member that receives the valve element 12a when the valve element 12a closes the flow path. The valve seat 12b is formed with a tapered surface that matches the shape of the tip of the valve element 12a so that the inner diameter gradually increases from the upstream side to the downstream side. The valve stem 12c is a member that moves the valve element 12a. When the valve stem 12c rotates under an operating force, it converts the rotational motion into linear motion and moves together with the valve element 12a, opening and closing the flow path with the valve element 12a. The valve stem 12c changes the gap between the valve element 12a and the valve seat 12b according to the amount of rotation of the valve stem 12c, thereby changing the opening degree of the flow path and adjusting the injection amount of compressed gas G. A flow rate adjustment tool is detachably attached to the rear end of the valve stem portion 12c, and by rotating the flow rate adjustment tool, the opening degree of the flow path is adjusted by the valve body portion 12a. The cover portion 12d is a member that covers the valve stem portion 12c. The cover portion 12d is detachably attached to the valve stem portion 12c. The cover portion 12d is removed from the valve stem portion 12c when the valve stem portion 12c is rotated with the flow rate adjustment tool, and is attached to the valve stem portion 12c after the amount of rotation of the valve stem portion 12c has been adjusted and the adjustment of the injection amount has been completed.

[0043] 3 and 4 is a part that allows the compressed gas G to flow out from the inlet pipe 9 to the storage section 6R and prevents the injector M1 from flowing from the storage section 6R into the inlet pipe 9. The filter section 13 is detachably attached to the upper end opening 9b of the inlet pipe 9 so as to close the upper end opening 9b.

[0044] The discharge pipe 14 shown in FIGS. 3 to 5 is a section that discharges a portion of the compressed gas G that has flowed into the accommodation section 6R from the inlet pipe 9 from the accommodation section 6R to the mixing pipe 7. After the discharge pipe 14 injects the injection material M1 from inside the accommodation section 6R into the mixing pipe 7, the discharge pipe 14 causes the compressed gas G to flow from inside the accommodation section 6R into the mixing pipe 7 through the discharge pipe 14. By discharging the compressed gas G inside the accommodation section 6R into the mixing pipe 7 after the injection material M1 is injected, the discharge pipe 14 changes the pressure inside the accommodation section 6R from a high-pressure state to a normal state and prevents the injection material M1 from leaking from inside the accommodation section 6R into the mixing pipe 7 through the transfer pipe 15.

[0045] As shown in FIGS. 3 and 4 , the discharge pipe 14 is a linear, vertically extending, circular tubular member of a predetermined length. It is a confluence pipe that joins the mixing pipe 7 downstream of the inlet pipe 9 from above. As shown in FIGS. 3 and 4 , the discharge pipe 14 is installed inside the main body 6a and disposed above the main body 6a so as to be perpendicular to the bottom 6e and parallel to the side 6d, as shown in FIG. 3 . The discharge pipe 14 connects the interior of the accommodation section 6R to the interior of the mixing pipe 7, allowing the relatively high-pressure compressed gas G in the accommodation section 6R to flow from the accommodation section 6R to the mixing pipe 7 after injection is completed, so that the pressure in the accommodation section 6R becomes approximately equal to atmospheric pressure. As shown in FIG. 3 , the discharge pipe 14 has a lower end opening 14a and an upper end opening 14b. The lower end opening 14a opens into the mixing pipe 7 and is connected to the discharge pipe connection 7d of the mixing pipe 7. The upper end opening 14b is a portion that opens into the storage portion 6R, and protrudes above the surface of the injection material M1.

[0046] As shown in FIG. 4, the discharge pipe section 14 has an inner diameter d3 set to a predetermined value depending on the injection speed, injection amount, or type of the injection material M1 injected from the mixing pipe section 7. By changing the inner diameter d3 of the discharge pipe section 14, the flow rate of the compressed gas G flowing through the discharge pipe section 14 is set to a predetermined value. A plurality of types of discharge pipe sections 14 with different inner diameters d3 are prepared, and the pipe is replaced with a pipe with the optimum inner diameter d3 depending on the injection speed, injection amount, or type of the injection material M1. For example, when adjusting the injection speed of the injection material M1 to a relatively high speed, a pipe with a relatively large inner diameter d3 is selected for the discharge pipe section 14. On the other hand, for example, when adjusting the injection speed of the injection material M1 to a relatively low speed, a pipe with a relatively small inner diameter d3 is selected for the discharge pipe section 14. As shown in FIGS. 3 and 4, the discharge pipe section 14 has a lower end opening 14a and an upper end opening 14b. The lower end opening 14a is a portion that opens into the mixing pipe section 7 and is connected to the discharge pipe connection portion 7d of the mixing pipe section 7. The upper end opening 14b is a portion that opens into the storage section 6R and protrudes above the surface of the injection material M1.

[0047] The conveying pipe 15 shown in Figures 3 and 4 conveys the injection material M1 from below to above the mixing pipe 7 by the compressed gas G so that the injection material M1 flows from the accommodation section 6R into the mixing pipe 7 together with the compressed gas G that has flowed from the inlet pipe 9 into the accommodation section 6R. The conveying pipe 15 functions as a leakage prevention section that prevents the injection material M1 in the accommodation section 6R from leaking out of the injection section 17R through the mixing pipe 7 and the flow path 16R due to vehicle vibration, etc. As shown in Figure 3, the conveying pipe 15 is a linear, vertically extending, cylindrical member of a predetermined length that serves as a confluence pipe that joins from below with the mixing pipe 7 slightly downstream of the outlet pipe 14, and also functions as a transport pipe that transports the injection material M1 by the force generated by the flow of the compressed gas G. 3 and 4, the conveying pipe 15 is installed inside the main body 6a and is disposed so as to be perpendicular to the bottom 6e and parallel to the side 6d as shown in Fig. 3. There is a gap between the lower end of the conveying pipe 15 and the bottom 6e of the storage section 6R, and the conveying pipe 15 is disposed at a position slightly higher than the center of the main body 6a.

[0048] As shown in FIG. 4, the conveying pipe 15 has an inner diameter d4 set to a predetermined value depending on the injection speed, injection amount, or type of the jet material M1 injected from the mixing pipe 7. The flow rate of the compressed gas G flowing through the conveying pipe 15 is set to a predetermined value by changing the inner diameter d4 shown in FIG. 4. A plurality of types of conveying pipes 15 with different inner diameters d4 are prepared, and the pipe is replaced with a pipe with the optimum inner diameter d4 depending on the injection speed, injection amount, or type of the jet material M1. For example, when adjusting the injection speed of the jet material M1 to a relatively high speed, a pipe with a relatively small inner diameter is selected for the conveying pipe 15. On the other hand, for example, when adjusting the injection speed of the compressed gas G and the jet material M1 to a relatively low speed, a pipe with a relatively large inner diameter is selected for the conveying pipe 15. As shown in FIG. 3, the conveying pipe 15 has a lower end opening 15a and an upper end opening 15b. The lower end opening 15a is a portion that opens into the storage portion 6R and protrudes below the surface of the injection material M1. The upper end opening 15b is a portion that opens into the mixing pipe portion 7 and is connected to the conveying pipe connecting portion 7e of the mixing pipe portion 7.

[0049] 1 and 2 are pipes through which the mixture M2 flows. R ,R L and wheels W R ,W L In order to supply the mixture M2 between the containers 6R and 6L, the mixture M2 is sent from the containers 6R and 6L to the ejectors 17R and 17L. The upstream sides of the flow paths 16R and 16L are connected to the mixture discharge portions 7g of the containers 6R and 6L shown in Fig. 1, and the downstream sides of the flow paths 16R and 16L are connected to the ejectors 17R and 17L shown in Figs.

[0050] 1 and 2 are parts that spray the mixture M2. R and Rail R R The mixture M2 is sprayed between the wheel W and the injection part 17L. L and Rail R LThe mixture M2 is sprayed between the nozzles 17R and 17L. The spraying units 17R and 17L are spray nozzles or the like that spray the mixture M2 toward the contact point P shown in FIG.

[0051] 1 and 2 is a device that controls the operation of the injection device 1. The control device 18 is, for example, a device that controls the operation of the rail R R ,R L and wheels W R ,W L When a slip detection signal is input from a slip detection device that detects slip, which is a macroscopic slip between the gas injection unit 2 and the compressed gas supply unit 7a, or when an emergency brake operation detection signal is input from an emergency brake operation detection device that detects the operation of the emergency brake device, an opening / closing signal is output to open and close the opening / closing units 4R and 4L so that compressed gas G flows from the gas injection unit 2 to the compressed gas supply unit 7a.

[0052] Next, the operation of the injection device according to the embodiment of the present invention will be described. In the following, rail R R and wheels W R The case where the injection material M1 is injected from the container 6R between the rail R L and wheels W L A detailed description of the case where the injection material M1 is injected from the container 6L during this period will be omitted. Rail R shown in Fig. 1 and Fig. 2 R and wheels W R When a slip occurring between the gas injection port 4R and the gas injection port 2 is detected or when activation of the emergency brake device is detected, the control device 18 opens the opening / closing unit 4R and causes the gas injection unit 2 to inject. As a result, the compressed gas G flows from the gas injection unit 2 through the flow paths 3 and 5R into the compressed gas supply unit 7a of the mixing tube unit 7 shown in FIGS. 3, 4, and 6, and then from the compressed gas supply unit 7a into the flow rate adjustment unit 8. The flow rate adjustment unit 8 having an optimal inner diameter d1 as shown in FIG. 4 is selected depending on the injection speed, injection amount, or type of the injection material M1. Therefore, when the compressed gas G flowing in from the compressed gas supply unit 7a shown in FIG. 6 flows into the flow rate adjustment unit 8, the compressed gas G, whose pressure has been reduced, passes through the filter unit 10 from the flow rate adjustment unit 8 shown in FIGS. 3 and 4 and is injected into the compressed gas passage unit 7b at an optimal injection speed.

[0053] 4 is selected depending on the injection speed, injection amount, or type of the injection material M1 so that the flow rate of the compressed gas G flowing into the flow rate adjustment unit 11 from the compressed gas passing unit 7b shown in Fig. 6 and the flow rate of the compressed gas G flowing from the compressed gas passing unit 7b into the inlet pipe unit 9 are a predetermined ratio. Therefore, as shown in Fig. 6, of the compressed gas G that flows from the compressed gas supply unit 7a into the compressed gas passing unit 7b, some of the compressed gas G flows from the compressed gas passing unit 7b into the flow rate adjustment unit 11, and the remaining compressed gas G flows from the compressed gas passing unit 7b into the inlet pipe unit 9.

[0054] When compressed gas G flows from compressed gas passing section 7b into flow rate adjustment section 11, compressed gas G flows from flow rate adjustment section 11 into mixture passing section 7f, and the compressed gas G with reduced pressure is injected from flow rate adjustment section 11 into mixture passing section 7f at an optimal injection speed. On the other hand, when compressed gas G flows from compressed gas passing section 7b into inlet pipe section 9, compressed gas G flows from inlet pipe section 9 into injection amount adjustment section 12. The injection amount adjustment section 12 adjusts the opening of the flow path of inlet pipe section 9 to an optimal opening in accordance with the injection speed of the injection object M1. Therefore, when compressed gas G flowing in from inlet pipe section 9 flows into injection amount adjustment section 12, compressed gas G with reduced pressure passes from injection amount adjustment section 12 to filter section 13 shown in FIGS. 3 and 4 at an optimal injection amount, and the compressed gas G is injected into storage section 6R, increasing the pressure inside storage section 6R.

[0055] When compressed gas G flows out from the inlet pipe 9 shown in Figure 6 into the storage section 6R, a portion of the compressed gas G that has flowed into the storage section 6R flows from the storage section 6R into the outlet pipe 14, and the remaining compressed gas G flows from the storage section 6R into the conveying pipe 15. The outlet pipe 14 having an optimal inner diameter d3 shown in Figure 4 is selected depending on the injection speed, injection amount, or type of the injection material M1. Therefore, as shown in Figure 6, a portion of the compressed gas G that has flowed into the storage section 6R flows into the upper end opening 14b of the outlet pipe 14 at an optimal flow rate and then flows downward from the lower end opening 14a into the mixture passage 7f.

[0056] The remainder of the compressed gas G flowing out of the inlet pipe 9 into the storage section 6R shown in FIG. 6 passes through the gaps between the injectables M1 on the surfaces of the injectables M1 in the storage section 6R, and a mixture M2 of the injectables M1 and compressed gas G flows from the storage section 6R into the conveying pipe 15. At this time, the injectables M1 in the storage section 6R are carried by the flow of compressed gas G, and the injectables M1 and compressed gas G flow upward through the conveying pipe 15 as a mixture M2. The conveying pipe 15 having an optimal inner diameter d4 shown in FIG. 4 is selected based on the injection speed, injection amount, or type of the injectables M1. Therefore, as shown in FIG. 6, the remainder of the compressed gas G flowing out of the storage section 6R flows into the conveying pipe 15 at an optimal flow rate together with the injectables M1 through the lower end opening 15a of the conveying pipe 15, and the mixture M2 of the injectables M1 and compressed gas G flows into the mixture passage 7f through the upper end opening 15b.

[0057] [Table 1]

[0058] Table 1 shows an example of adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15, and the opening degree of the injection amount adjusting unit 12 according to the injection speed of the injection object M1. In this case, the opening degree of the injection amount adjusting unit 12 is adjusted as necessary after adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15.

[0059] [Table 2]

[0060] Table 2 shows an example of adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15, and the opening degree of the injection amount adjusting unit 12 according to the injection amount of the injection material M1. In this case, the opening degree of the injection amount adjusting unit 12 is adjusted as necessary after adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15.

[0061] [Table 3]

[0062] Table 3 shows an example of adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15, and the opening degree of the injection amount adjusting unit 12 according to the size of the injection object M1 as the type of injection object M1. In this case, the opening degree of the injection amount adjusting unit 12 is adjusted as necessary after adjusting the inner diameters d1 to d4 of the flow rate adjusting units 11 and 12, the discharge pipe unit 14, and the conveying pipe unit 15.

[0063] As shown in Figures 1 and 2, when a railway vehicle travels on track R, the bogie of the railway vehicle vibrates, causing the storage unit 6R attached to the bogie to vibrate as well. As shown in Figure 3, when the storage unit 6R is filled with the injection material M1 up to its specified capacity limit, the surface of the injection material M1 does not exceed the lower edge of the mixing tube 7, and the mixing tube 7 is always positioned above the surface of the injection material M1. Therefore, even if the storage unit 6R vibrates, the injection material M1 remaining in the conveying tube 15 or the injection material M1 that has entered through the lower end opening 15a of the conveying tube 15 is prevented from exceeding the upper end opening 15b and flowing into the mixing tube 7. As a result, even when the injection device 1 is not spraying, the injection material M1 is prevented from leaking from the storage unit 6R due to the vibration of the bogie, etc.

[0064] As shown in Fig. 6, when a mixture M2 of the injection material M1 and compressed gas G flows from the conveying pipe 15 into the mixture passage 7f in the mixing pipe 7, the mixture M2 flowing in from the conveying pipe 15 and the compressed gas G that has passed through the flow rate adjusting section 11 are mixed in the mixture passage 7f. The mixture M2 that has flowed in from the conveying pipe 15 flows from the mixture passage 7f into the mixture discharge section 7g together with the compressed gas G that has passed through the flow rate adjusting section 11. When the mixture M2 is discharged from the mixture discharge section 7g, it flows from the injection section 17R to the rail R through the flow path 16R shown in Figs. R and wheels W R As a result, the mixture M2 is injected between the rail R R and wheels W R The adhesion coefficient between the wheels is increased by the injected material M1, preventing slippage and improving braking performance.

[0065] When the control device 18 shown in FIGS. 1 and 2 stops the gas injection unit 2 and closes the opening / closing unit 4R, the injection of compressed gas G into the mixing tube 7 stops, and the inflow of compressed gas G into the storage unit 6R stops. Therefore, the gas in the storage unit 6R, whose pressure had increased due to the inflow of compressed gas G into the storage unit 6R shown in FIGS. 3 and 4, flows from the upper end opening 14b to the lower end opening 14a of the discharge tube 14. As a result, excess gas in the storage unit 6R is instantly discharged from the storage unit 6R through the mixing tube 7, the flow path 16R, and the injection unit 17R, and the pressure in the storage unit 6R returns to normal pressure (atmospheric pressure). Therefore, even though the injection operation of the injection device 1 has stopped, the injection object M1 in the storage unit 6R is prevented from leaking from the transfer tube 15 through the mixing tube 7, the flow path 16R, and the injection unit 17R.

[0066] The injection device according to the embodiment of the present invention has the following effects. (1) In this embodiment, the mixing pipe 7 mixes the jet M1 and the compressed gas G, and the inlet pipe 9 causes a portion of the compressed gas G flowing into the mixing pipe 7 to flow into the accommodation sections 6R, 6L that accommodate the jet M1. In this embodiment, the conveying pipe 15 conveys the jet M1 from below to above the mixing pipe 7 by the compressed gas G so that the jet M1 flows from the accommodation sections 6R, 6L into the mixing pipe 7 together with the compressed gas G that has flowed from the inlet pipe 9 into the accommodation sections 6R, 6L. Therefore, by utilizing the force of the compressed gas G that has flowed from the inlet pipe 9 into the accommodation sections 6R, 6L, the jet M1 in the accommodation sections 6R, 6L can be easily conveyed by the conveying pipe 15 toward the mixing pipe 7, entrained in the flow of compressed gas G. Furthermore, the jet M1 is conveyed toward the mixing pipe 7 by the conveying pipe 15, which has a predetermined length and extends from below to above. Therefore, when the accommodation sections 6R, 6L vibrate due to the vibration of a railway vehicle or the like, the jet material M1 remaining in the conveying pipe section 15 or the jet material M1 that has entered through the lower end opening 15a of the conveying pipe section 15 can be prevented from flowing over the upper end opening 15b into the mixing pipe section 7. As a result, it is possible to prevent the jet material M1 from leaking out of the accommodation sections 6R, 6L even when the injector 1 is not performing an injection operation. As a result, it is possible to prevent the jet material M1 that has leaked into the mixing pipe section 7 from moving to the upstream flow rate adjustment section 8 or flow rate adjustment section 11 and clogging the flow rate adjustment section 8 or flow rate adjustment section 11 with the jet material M1.

[0067] (2) In this embodiment, the flow velocity adjusting unit 8 adjusts the flow velocity of the compressed gas G flowing into the mixing pipe 7. Also, in this embodiment, the flow rate adjusting unit 11 adjusts the flow rate of the compressed gas G flowing through the mixing pipe 7 and the flow rate of the compressed gas G flowing through the inlet pipe 9. Furthermore, in this embodiment, the outlet pipe 14 discharges a portion of the compressed gas G that flows from the inlet pipe 9 into the accommodation sections 6R, 6L from the accommodation sections 6R, 6L to the mixing pipe 7. Therefore, the ratio of the flow rate of the compressed gas G flowing into the mixing pipe 7 to the flow rate of the compressed gas G flowing into the inlet pipe 9 can be easily adjusted by the flow rate adjusting unit 11. Also, after the injection of the injection object M1 stops, the compressed gas G in the accommodation sections 6R, 6L can be quickly discharged through the outlet pipe 14 to the mixing pipe 7, preventing the injection object M1 from leaking out of the accommodation sections 6R, 6L.

[0068] (3) In this embodiment, the inner diameters d1 to d4 of the flow velocity adjusting unit 8, the flow rate adjusting unit 11, the discharge pipe 14, and the conveying pipe 15 are set to predetermined values ​​according to the spray speed of the jet material M1. Therefore, by adjusting the inner diameters d1 to d4 of the flow velocity adjusting unit 8, the flow rate adjusting unit 11, the discharge pipe 14, and the conveying pipe 15 in advance, the spray speed of the jet material M1 can be set to an optimal spray speed according to the speed of the vehicle. For example, for railway vehicles that travel at a relatively high speed, such as Shinkansen (registered trademark), the jet material M1 can be sprayed at a relatively high spray speed; for railway vehicles that travel at a relatively low speed, such as streetcars, the jet material M1 can be sprayed at a relatively low spray speed; and for railway vehicles that travel at a relatively medium speed, such as conventional lines, the jet material M1 can be sprayed at a medium spray speed.

[0069] (4) In this embodiment, the inner diameters d1 to d4 of the flow velocity adjusting unit 8, the flow rate adjusting unit 11, the discharge pipe 14, and the conveying pipe 15 are set to predetermined values ​​according to the injection amount of the jet material M1. Therefore, by adjusting the inner diameters d1 to d4 of the flow velocity adjusting unit 8, the flow rate adjusting unit 11, the discharge pipe 14, and the conveying pipe 15 in advance, the injection amount of the jet material M1 can be set to an optimal injection amount according to the railway line on which the vehicle is operated. For example, there are cases where the operation of a railway vehicle is changed between a railway line such as an urban area, which has many relatively flat railway lines and a relatively small injection amount of the jet material M1, and a railway line such as a mountainous area, which has many relatively steep railway lines and a relatively large injection amount of the jet material M1. In such cases, by replacing the flow velocity adjusting unit 8, the flow rate adjusting unit 11, the discharge pipe 14, and the conveying pipe 15 with ones having inner diameters d1 to d4 appropriate for each railway line, the jet material M1 can be injected at an optimal injection amount according to each railway line.

[0070] (5) In this embodiment, the inner diameters d1 to d4 of the flow rate adjuster 8, the flow rate adjuster 11, the discharge pipe 14, and the conveying pipe 15 are set to predetermined values ​​according to the type of the injection material M1. Therefore, by adjusting the inner diameters d1 to d4 of the flow rate adjuster 8, the flow rate adjuster 11, the discharge pipe 14, and the conveying pipe 15 in advance, any type of injection material M1 can be used in any of the containers 6R, 6L when multiple types of containers 6R, 6L are present. For example, in conventional injection devices, the material, particle size, specific gravity, and other properties of the injection material M1 are specified according to the container 6R, 6L to be used, and the type of injection material M1 that can be used in one type of container 6R, 6L may differ from the type of injection material M1 that can be used in another type of container 6R, 6L. In this embodiment, by setting the inner diameters d1 to d4 of the flow rate adjustment section 8, the flow rate adjustment section 11, the discharge pipe section 14, and the conveying pipe section 15 to predetermined values, various types of injection material M1 can be injected under optimal conditions regardless of the type of the storage sections 6R, 6L.

[0071] The present invention is not limited to the above-described embodiment, and various modifications and alterations are possible as described below, and these are also within the scope of the present invention. (1) In this embodiment, the rail R R ,RL and wheels W R ,W L Although the present invention has been described with reference to an example in which an adhesion-enhancing material that improves the coefficient of adhesion between the two objects is sprayed as the injection material M1, the present invention can also be applied to an example in which a friction-reducing material that reduces the coefficient of friction between the two objects is sprayed as the injection material M1, or to an example in which an injection material other than an adhesion-enhancing material or a friction-reducing material is sprayed. Furthermore, although the present invention has been described with reference to an example in which the injection material M1 is alumina, the present invention can also be applied to an injection material M1 made of ceramic particles other than alumina, such as silica sand.

[0072] (2) In this embodiment, the injection material M1 is described as a granular material, but the present invention can also be applied to cases where the injection material M1 is a powder or liquid material. In addition, in this embodiment, the injection material M1 is described as a compressed air, but the present invention can also be applied to cases where a gas other than compressed air is injected. Furthermore, in this embodiment, the injection device 1 is described as an on-board injection device that injects the injection material M1 from the railroad vehicle side, but the present invention can also be applied to cases where the injection device 1 is a ground-based injection device that injects the injection material M1 from the track R side. In this case, it is possible to prevent the injection material M1 from leaking from the housing portions 6R, 6L that are subjected to vibrations due to the running of the railroad vehicle.

[0073] (3) In this embodiment, a case has been described in which a plurality of types of flow velocity adjusters 8, flow rate adjusters 11, discharge pipes 14, and conveying pipes 15 with different inner diameters are prepared in advance and are replaceable with flow velocity adjusters 8, flow rate adjusters 11, discharge pipes 14, and conveying pipes 15 with optimal inner diameters. However, the present invention is not limited to such a structure. For example, the present invention can also be applied to a case in which the inner diameters of the flow velocity adjusters 8, flow rate adjusters 11, discharge pipes 14, and conveying pipes 15 are configured to be variable and are manually or automatically set to optimal inner diameters. Furthermore, in this embodiment, a case in which the inner diameters d1 to d4 of the mixing pipes 7, inlet pipes 9, discharge pipes 14, and conveying pipes 15 are circular has been described as an example. However, the present invention can also be applied to cases in which the inner diameters are other than circular, such as oval, rectangular, or polygonal. Furthermore, in this embodiment, the flow rate adjusting unit 8 and the flow rate adjusting unit 11 are throttling mechanism units such as orifices. However, the present invention can also be applied to cases where the flow rate adjusting unit 8 and the flow rate adjusting unit 11 are throttling mechanism units such as Venturi tubes or flow nozzles. [Explanation of symbols]

[0074] 1 Injector 2 Gas injection section 3 Flow path 4R,4L opening / closing part 5R, 5L flow path 6R, 6L storage compartment 7 Mixing pipe section 7a Compressed gas supply section 7b Compressed gas passage 7e Mixture passage section 7f Mixture discharge section 8 Flow rate adjustment section 9 Inflow pipe section 10 Filter section 11 Flow rate adjustment section 12 Injection amount adjustment section 13 Filter section 14 Discharge pipe section 15 Conveyor pipe section 16R, 16L flow path 17R,17L injection part R track R R ,R L rail W R ,W L wheel G Compressed gas M1 projectile M2 mixture d1~d4 inner diameter

Claims

1. An injection device that injects an injection material between a rail and a wheel, a mixing tube section in which the jet and compressed gas are mixed; an inlet pipe section that causes a portion of the compressed gas flowing into the mixing pipe section to flow into a housing section that houses the injection object; a conveying pipe section that conveys the jetting material from below to above the mixing pipe section by the compressed gas so that the jetting material flows from the accommodation section into the mixing pipe section together with the compressed gas that has flowed into the accommodation section from the inlet pipe section; An injection device comprising:

2. 2. The injection device of claim 1, a flow rate adjusting unit that adjusts the flow rate of the compressed gas flowing into the mixing tube unit; a flow rate adjusting unit that adjusts the flow rate of the compressed gas flowing through the mixing pipe unit and the flow rate of the compressed gas flowing through the inlet pipe unit; a discharge pipe section that discharges a portion of the compressed gas that has flowed into the accommodation section from the inlet pipe section to the mixing pipe section, An injection device characterized by:

3. 3. The injection device according to claim 2, the flow rate adjusting unit, the flow rate adjusting unit, the discharge pipe unit, and the conveying pipe unit have inner diameters set to predetermined values ​​according to the injection speed of the injection object; An injection device characterized by:

4. 3. The injection device according to claim 2, the flow rate adjusting unit, the flow rate adjusting unit, the discharge pipe unit, and the conveying pipe unit have inner diameters set to predetermined values ​​according to the injection amount of the injection material; An injection device characterized by:

5. 3. The injection device according to claim 2, the flow velocity adjusting unit, the flow rate adjusting unit, the discharge pipe unit, and the conveying pipe unit have inner diameters set to predetermined values ​​according to the type of the injection material; An injection device characterized by:

Images