Railway vehicle dry-type rim lubricating device and intermittent rim lubricating method

Abstract

The invention discloses a rail vehicle dry-type rim lubricating device and an intermittent rim lubricating method, the rail vehicle dry-type rim lubricating device comprises a bogie frame, wheels and a lubricating block, a first-stage air cylinder is installed on the bogie frame, a first-stage piston is installed in the first-stage air cylinder, the first-stage piston is fixedly connected with one end of a second-stage air cylinder, and the other end of the second-stage air cylinder is fixedly connected with the wheel. One end of the first-stage air cylinder is connected with a first-stage piston, the other end of the second-stage air cylinder is connected with a lubricating block packaging box, a second-stage piston is installed in the second-stage air cylinder, the lubricating block is installed in the lubricating block packaging box, the first-stage air cylinder drives the second-stage air cylinder and the lubricating block packaging box to get close to or be separated from a wheel rim, and the second-stage air cylinder drives the lubricating block to abut against or be separated from the wheel rim. The dry type lubricating device is controlled by the first-stage electromagnetic valve and the first-stage air cylinder to be close to the wheel rim as a whole, then the second-stage air cylinder is intermittently controlled by the second-stage electromagnetic valve to achieve intermittent lubrication of the wheel rim, and waste of lubricating blocks is reduced while the lubricating effect of the wheel rim is guaranteed.

Description

Technical Field

[0001] The invention relates to rail transit vehicle wheel rim lubrication, in particular to a rail vehicle dry wheel rim lubrication device and an intermittent wheel rim lubrication method. Background Art

[0002] Train wheel flange lubrication plays a very critical role in the normal operation of the train. It can not only directly reduce the wear between the wheel flange and the rail, reduce vibration and noise, but also improve the traction efficiency and economic benefits of the train: during the operation of the train, the wheel flange lubrication device applies lubricant to the space between the wheel flange and the rail to form a protective film, which reduces friction, reduces energy consumption, extends the life of the wheel and rail, and reduces the maintenance work of the vehicle and the track.

[0003] At present, wheel rim lubrication mainly adopts two methods: dry (solid) lubrication and wet (liquid) lubrication. The dry wheel rim lubrication system generally consists of a lubrication device and a solid lubricating block. Figure 1 As shown in the figure, the dry wheel flange lubrication device A is fixedly installed on the bogie frame B. A constant force spring is inside the lubrication device to push the lubrication block from the back to keep it in contact with the wheel flange C. The lubricant is applied to the wheel flange C to form a layer of dry lubrication film to achieve lubrication between the wheel flange and the rail. Since the train runs for a long period of time, the lubrication block is always in contact with the wheel. Long-term wear will consume a large amount of lubrication blocks, resulting in a decrease in its utilization rate and an increase in cost. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing mechanical dry wheel rim lubrication device has a large consumption of lubricating blocks and a waste of resources. The present invention provides an intermittently operating rail vehicle dry wheel rim lubrication device and an intermittent wheel rim lubrication method.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A rail vehicle dry wheel rim lubrication device comprises a bogie frame, a wheel and a lubricating block, and is characterized in that: a primary cylinder is installed on the bogie frame, a primary piston is installed in the primary cylinder, the primary piston is connected to one end of a secondary cylinder, the other end of the secondary cylinder is connected to a lubricating block packaging box, a secondary piston is installed in the secondary cylinder, the lubricating block is installed in the lubricating block packaging box, the primary piston drives the secondary cylinder and the lubricating block packaging box to approach or separate from the wheel rim, and the secondary cylinder drives the lubricating block to press against or separate from the wheel rim.

[0007] The rail vehicle dry wheel rim lubrication device of the present invention drives the secondary cylinder and the lubrication block packaging box to approach or separate from the wheel rim through the primary cylinder, and the secondary cylinder drives the lubrication block to contact or separate from the wheel rim. In this way, intermittent wheel rim lubrication operation can be automatically realized by controlling the primary and secondary cylinders, thereby ensuring the wheel rim lubrication effect while reducing the waste of the lubrication block.

[0008] Preferably, a primary solenoid valve is installed at the medium input end of the primary cylinder, and a secondary solenoid valve is installed at the medium input end of the secondary cylinder. In this way, the primary cylinder can be automatically controlled by the primary solenoid valve, and the secondary cylinder can be automatically controlled by the secondary solenoid valve.

[0009] Preferably, the control end of the first-level solenoid valve is connected to an intermediate relay, and the control end of the second-level solenoid valve is connected to a first time relay and a second time relay, the intermediate relay is used to control the start and close of the first-level solenoid valve, the first time relay and the second time relay are used to control the start and close of the second-level solenoid valve, and a travel switch is installed at the end of the stroke of the first-level piston. After the travel switch is triggered, the first time relay is energized to start timing, and after the delay time t1 is reached, the second-level solenoid valve is started, and the second-level piston pushes the lubricating block and abuts against the wheel rim. At the same time, the second time relay is energized to start timing, and after the delay time t2 is reached, the second-level solenoid valve is closed and the second-level piston retreats. In this way, the present invention can set the action cycle and action frequency of the lubricating block and the wheel rim through the first and second time relay control circuits, wherein the travel switch is used as a trigger switch for the cyclic operation of the lubricating block, the delay time t1 is the pause time of the cyclic operation of the lubricating block, and the delay time t2 is the operation time of the cyclic operation of the lubricating block, so as to reduce the consumption of the lubricating block in the lubrication process.

[0010] Preferably, a stopper is installed at the end of the stroke of the primary piston to ensure that the lubrication block packaging box does not get infinitely close to the wheel, and a certain distance D is maintained between the two.

[0011] Preferably, a first spring for resetting the primary piston is installed in the primary cylinder, and a second spring for resetting the secondary piston is installed in the secondary cylinder to facilitate resetting of the primary and secondary pistons.

[0012] Preferably, a pawl is installed on the inner wall of the lubricating block packaging box, a pawl spring is installed between the lubricating block packaging box and the pawl, grinding teeth are provided on the lubricating block, and the pawl is snapped into the grinding teeth of the lubricating block to form a fit, so as to ensure that the lubricating block remains in the original position of the lubricating block packaging box after the secondary piston of the secondary cylinder retreats.

[0013] Preferably, a start button for starting the first-level solenoid valve at any time and a stop button for closing the first-level solenoid valve at any time are provided in the vehicle driver's cab, so as to facilitate the driver to lubricate the wheel rim as needed.

[0014] Preferably, the curve detection output signal and the curve completion output signal of the vehicle central control system are connected to the control circuit of the intermediate relay. When the curve detection output signal Y1=1, the first-level solenoid valve is started, and when the curve completion output signal Y2=1, the first-level solenoid valve is closed to actively provide wheel rim lubrication when the vehicle passes through a curve.

[0015] Based on the same inventive concept, the present invention also provides an intermittent wheel rim lubrication method of the rail vehicle dry wheel rim lubrication device, which comprises:

[0016] A primary solenoid valve is installed at the medium input end of the primary cylinder, a secondary solenoid valve is installed at the medium input end of the secondary cylinder, a control end of the primary solenoid valve is connected to an intermediate relay, a control end of the secondary solenoid valve is connected to a first time relay and a second time relay, the intermediate relay is used to control the start and stop of the primary solenoid valve, and the first time relay and the second time relay are used to control the start and stop of the secondary solenoid valve;

[0017] A stopper and a travel switch are installed at the end of the stroke of the first-stage piston;

[0018] The primary piston in the primary cylinder drives the secondary cylinder to the end of the primary piston stroke and triggers the travel switch;

[0019] The first time relay is energized to start timing. After the timing reaches the delay time t1, the secondary solenoid valve is started, and the secondary cylinder drives the lubrication block until the lubrication block abuts against the wheel rim for lubrication. At the same time as the secondary solenoid valve is started, the second time relay is energized to start timing. After the timing reaches the delay time t2, the secondary solenoid valve is closed, the secondary piston retreats, the lubrication block is separated from the wheel rim, and the first time relay is energized to restart timing, entering the next lubrication cycle of the lubrication block, and repeating this process.

[0020] Preferably, a start button for starting the first-level solenoid valve at any time and a stop button for closing the first-level solenoid valve at any time are provided in the vehicle driver's cab; the curve detection output signal and the curve completion output signal of the vehicle central control system are connected to the control circuit of the intermediate relay, when the curve detection output signal Y1=1, the first-level solenoid valve is started, and when the curve completion output signal Y2=1, the first-level solenoid valve is closed.

[0021] The first-level solenoid valve + first-level cylinder and the second-level solenoid valve + second-level cylinder of the present invention are nested and used to control the approach and operation of the dry lubrication block and the wheel rim respectively. The first and second time relays are used to control the frequency and cycle of the intermittent operation of the dry lubrication block. The ratchet device (ratchet + ratchet spring + grinding gear) cooperates with the lubrication block to ensure that the lubrication block will not return after feeding. Through such a design, the contact between the lubrication block and the wheel rim is controlled in the line section that needs lubrication, the lubrication effect is guaranteed, and the lubrication function is exerted. For unnecessary line sections, the lubrication block does not contact the wheel rim, which reduces unnecessary wear of the lubrication block material and improves the utilization rate of the lubrication block material.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention combines the curve detection signal of the central control system and the buttons (start button and stop button) in the driver's cab to remotely control the start and stop of the entire dry wheel rim lubrication device. Compared with the previous purely mechanical dry lubrication device, the present invention is equipped with a control system that can start or stop the lubrication device at any time. Through such a design, the contact between the lubrication block and the wheel rim is controlled in the line section that needs lubrication, ensuring the lubrication effect and exerting the lubrication function. For unnecessary line sections, the lubrication block does not contact the wheel rim, reducing unnecessary wear of the lubrication block material and improving the utilization rate of the lubrication block material.

[0024] (2) The time relay control circuit of the present invention can set the action cycle and action frequency of the lubricating block and the wheel rim, thereby reducing the consumption of the lubricating block during the lubrication process. Figure 4 As shown, KT1 controls the delayed start of the secondary solenoid valve 2, and KT2 controls the delayed closing of the secondary solenoid valve 2. When the KT1 coil is energized, the timer starts timing. When the timing time reaches t1, the KT1 delayed normally open contact is closed, the KT2 coil and the secondary solenoid valve coil YV2 are energized at the same time, and the lubricating block 11 presses forward against the wheel rim 12. At this time, the timer starts timing again. When the timing time reaches t2, the KT2 delayed normally closed contact is disconnected, the KT1 coil is de-energized, the KT1 delayed normally open contact is opened, the secondary solenoid valve coil YV2 is de-energized, and the lubricating block 11 stops working. In this way, the primary and secondary solenoid valves and the primary and secondary cylinders in the present invention are linked to each other, and respectively perform the two processes of approaching and operating the dry lubricating block to the wheel rim. Such a graded operation can reduce the working stroke of the lubricating block, so that the lubricating block packaging box is close to the wheel but limited to a moderate distance, and the lubricating block can quickly contact the wheel rim when operating.

[0025] (3) The present invention provides a stopper and a mechanical travel switch inside the first-stage cylinder, which not only limits the distance between the dry lubrication device as a whole and the wheel rim, but also serves as a trigger condition for the cyclic intermittent operation of the lubrication block.

[0026] (4) The present invention provides a ratchet device (ratchet + ratchet spring + grinding gear) between the lubricating block packaging box and the lubricating block, thereby ensuring that the lubricating block remains in the original position of the lubricating block packaging box after the secondary piston of the secondary cylinder is retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 Schematic diagram of the connection of a traditional dry wheel rim lubrication device on a bogie.

[0029] Figure 2 It is a mechanical state diagram before the device of the present invention is started.

[0030] Figure 3 This is a mechanical state diagram of the device of the present invention after startup.

[0031] Figure 4 This is the electrical schematic diagram of the intermittent operation control of the dry wheel rim lubrication device of the present invention.

[0032] In the figure: 1-first-level solenoid valve, 2-second-level solenoid valve, 3-first-level cylinder, 4-first-level piston, 5-bogie frame, 6-block, 7-first spring, 8-second-level piston, 9-second spring, 10-spring baffle, 11-lubricating block, 12-wheel rim, 13-pawl spring, 14-grinding gear, 15-pawl, 16-lubricating block packaging box, 17-second-level cylinder;

[0033] FU1: Main circuit fuse;

[0034] SB1: Start button;

[0035] SB2: stop button;

[0036] SQA: travel switch, used as a trigger switch for the lubrication block cycle operation;

[0037] YV1: primary solenoid valve control coil;

[0038] YV2: Secondary solenoid valve control coil;

[0039] Y1: Curve detection output signal. When a curve is detected ahead, Y1 output is 1, otherwise the output is 0.

[0040] Y2: Output signal of curve completion. When the train has completed the curve, Y2 output is 1, otherwise it is 0.

[0041] KA1: Intermediate relay, used to control the start and stop of the first-level solenoid valve;

[0042] KT1: The first time relay controls the pause time of the lubrication block cycle operation;

[0043] KT2: The second time relay controls the operation time of the lubrication block cycle. DETAILED DESCRIPTION

[0044] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0045] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] See also Figure 2 - Figure 4 An embodiment of a rail vehicle dry wheel rim lubrication device of the present invention includes a mechanical part and a circuit control part.

[0048] 1. Mechanical part

[0049] The mechanical part of the present invention is composed of a primary solenoid valve 1, a secondary solenoid valve 2, a primary cylinder 3, a secondary cylinder 17, a lubricating block packaging box 16, a lubricating block 11 and other components. The function of the primary solenoid valve 1 and the primary cylinder 3 is to make the lubricating block packaging box 16 and the lubricating block 11 close to the wheel rim 12 and keep a certain distance from the wheel rim 12, so that the lubricating block packaging box 16 will not be damaged by the rotation of the wheel rim 12; the function of the secondary solenoid valve 2 and the secondary cylinder 17 is to make the secondary piston 8 push the lubricating block 11 against the wheel rim 12 intermittently to lubricate the wheel rim, and at the same time limit the cantilever length of the lubricating block 11 extending out of the lubricating block packaging box 16 to a small range, so as to avoid the lubricating block 11 from breaking due to the cantilever extending too long. The structure of the mechanical part is introduced in detail below:

[0050] Figure 2 This is the state before the dry wheel rim lubrication device of the rail vehicle of the present invention is started. The first-level solenoid valve 1 and the second-level solenoid valve 2 of the present invention can both be two-position three-way solenoid valves, and the cylinders connected to them are the first-level cylinder 3 and the second-level cylinder 17 respectively. The first-level solenoid valve 1 is installed on the charging and discharging air path of the first-level cylinder 3, and is used to control the charging and discharging of the first-level cylinder 3. The second-level solenoid valve 2 is installed on the charging and discharging air path of the second-level cylinder 17, and is used to control the charging and discharging of the second-level cylinder 17. The first-level cylinder 3 is tightly connected to the bogie frame 5, one end of the second-level cylinder 17 is tightly connected to the first-level piston 4 installed in the first-level cylinder 3, and the other end of the second-level cylinder 17 is fixedly connected to the lubrication block packaging box 16, and the second-level cylinder 17 is allowed to move along the axis of the first-level cylinder 3 under the action of the first-level piston 4. During the reciprocating movement of the second-level cylinder 17, the entire lubrication packaging box 16 is driven to approach the wheel rim 12 or away from the wheel rim 12. The secondary piston 8 inside the secondary cylinder 17 abuts against the lubrication block 11 installed in the lubrication packaging box 16. The lubrication block 11 is pushed unidirectionally by the secondary piston 8 to abut against or break away from the wheel rim 12, that is, the filling and discharging of the secondary cylinder 17 controls the implementation or stop of the lubrication work.

[0051] In addition, a first spring 7 is installed between the primary piston 4 in the primary cylinder 3 and the cylinder body. When the primary piston 4 pushes out the secondary cylinder 17, the first spring 7 is compressed. When the primary solenoid valve 1 is closed, the restoring force of the first spring 7 drives the primary piston 4 to reset. An immovable spring baffle 10 is installed inside the lubricating block packaging box 16. A second spring 9 is installed between the secondary piston 8 and the spring baffle 10. A small hole is provided in the middle of the spring baffle 10 to allow the push rod of the secondary piston 8 to apply pressure to the lubricating block 11. When the secondary piston 8 pushes out the lubricating block 11, the second spring 9 is compressed. When the secondary solenoid valve 2 is closed, the restoring force of the second spring 9 drives the secondary piston 8 to reset.

[0052] A stopper 6 and a mechanical travel switch SQA are installed at the end of the stroke of the first-stage piston 4 inside the first-stage cylinder 3. When the first-stage cylinder 3 drives the second-stage cylinder 17 forward through the first-stage piston 4 and the first-stage piston 4 stops in front of the stopper 6, it contacts the travel switch SQA and drives the lubrication block 11 to intermittently contact the wheel rim 12.

[0053] In order to reduce the impact of the wheel rim 12 on the lubricating block 11 and ensure that the lubricating block 11 can quickly resist the wheel rim 12 for lubrication, a pawl 15 and a pawl spring 13 are installed on the inner wall of the lubricating block packaging box 16, and the pawl spring 13 is installed between the lubricating block packaging box 16 and the pawl 15. The pawl 15 cooperates with the grinding tooth 14 on the lubricating block 11 to ensure that the lubricating block 11 can only move in one direction toward the wheel rim 12, and prevent the lubricating block 11 from retreating together with the secondary cylinder 17 after retreat.

[0054] 2. Circuit Control

[0055] The circuit control part is composed of an intermediate relay KA1, time relays KT1 and KT2, a start button SB1, a travel switch SQA, etc. The intermediate relay KA1 is used to control the start and close of the first-level solenoid valve 1. When the first-level solenoid valve 1 is started, the first-level cylinder 3 is inflated, and the first-level piston 4 pushes the second-level cylinder 17 and the lubricating block package box 16 connected thereto and its lubricating block 11 to approach the wheel rim 12 until the first-level piston 4 encounters the travel switch SQA and the stopper 6 and stops. The setting of the travel switch SQA and the stopper 6 ensures that the lubricating block package box 16 will not be infinitely close to the wheel rim 12 and maintain a certain distance D.

[0056] The first and second time relays KT1 and KT2 and the travel switch SQA jointly control the start and close of the secondary solenoid valve 2, that is, to realize the intermittent operation control of the lubricating block 11.

[0057] A start button SB1 and a stop button SB2 are provided in the vehicle driver's cab. The driver can start the first-level solenoid valve 1 at any time by operating the start button SB1, so that the dry wheel rim lubrication device of the present invention starts to lubricate the wheel rim. The first-level solenoid valve 1 can be closed at any time by pressing the stop button SB2 to realize the closing of the entire control circuit, so that the driver can stop the device of the present invention from lubricating the wheel rim at any time.

[0058] The curve detection output signal Y1 of the vehicle central control system can start the first-level solenoid valve 1, so that the dry wheel rim lubrication device of the present invention starts to lubricate the wheel rim, and the curve completion output signal Y2 controls the closing of the first-level solenoid valve 1, so that the entire control circuit of the dry wheel rim lubrication device of the present invention is closed, and the dry wheel rim lubrication device ends lubrication and returns as a whole.

[0059] Combination Figure 2 , 34. When the start button SB1 is pressed in the driver's cab or the curve detection output signal Y1=1 output by the central control system, the coil of the intermediate relay KA1 is energized, the normally open contact KA1 is closed, the primary solenoid valve control coil YV1 is energized to start the primary solenoid valve 1, and the primary piston 4 of the primary cylinder 3 pushes the secondary cylinder 17 forward by a distance H. Figure 3 As shown, when the primary piston 4 and the secondary cylinder 17 advance to the end of the stroke, the primary piston 4 contacts the stopper 6 and the mechanical travel switch SQA, the coil of the first time relay KT1 is energized, and the timing starts. After the delay time t1 is reached, the delayed normally open contact KT1 is closed, and the secondary solenoid valve control coil YV2 is energized to start the secondary solenoid valve 2, the secondary cylinder 17 is inflated, and the secondary piston 8 advances. At the same time, the coil of the second time relay KT2 is energized to start timing. After the delay time t2 is reached, the delayed normally closed contact KT2 is disconnected, the secondary solenoid valve 2 is closed, the secondary cylinder 17 is deflated, and the secondary piston 8 is retracted. The above actions are then repeated to achieve intermittent lubrication of the lubricating block 11. In this process, when the driver presses the stop button SB2, or the central control system outputs the cornering completion output signal Y2=1, the primary solenoid valve 1 is de-energized, lubrication stops, and the lubricating block 11 returns to the origin.

[0060] The delay time t1 and t2 are set according to the on-site requirements. In this embodiment, t1 is set to 6 seconds and t2 is set to 1 second. Considering that at time 0, the secondary cylinder 17 moves forward and the primary piston 4 contacts the travel switch SQA, the device will continue to operate with a cycle of 7 seconds, of which 6 seconds is the interval time and 1 second is the working time of the lubricating block 11. In this way, the wear time of the lubricating block 11 is greatly reduced, while retaining a good lubrication effect.

[0061] The complete working process of the present invention is as follows: the driver presses the start button SB1 in the driver's cab, or the central control system sends an output signal Y1=1, the first-level solenoid valve 1 is energized, and the dry lubrication device as a whole (including the first-level piston 4, the second-level cylinder 17, the lubrication block packaging box 16 and the lubrication block 11) extends forward close to the wheel rim 12. When the first-level piston 4 and the second-level cylinder 17 are blocked by the block 6, the second-level solenoid valve 2 is started after waiting for t1 time, and the second-level piston 8 extends the lubrication block 11 to press against the wheel rim 12 to start lubrication. After t2 time, the second-level solenoid valve 2 is closed, the second-level piston 8 retreats, and the lubrication block 11 is kept in place by the pawl 15 but does not lubricate. After waiting for t1 time, the lubrication block 11 is extended again to press against the wheel rim 12 for lubrication, and this is repeated to realize the intermittent lubrication process. During the intermittent lubrication process, once the driver presses the stop button SB2 or the central control sends the output signal Y2=1, the first-stage solenoid valve 1 is de-energized, and the first-stage piston 4 is retracted by the spring and no longer contacts the travel switch SQA, causing the second-stage solenoid valve 2 to be de-energized, the second-stage cylinder to stop operating, and the dry lubrication device as a whole to return to its initial position.

[0062] The present invention has at least the following three working states during its working process:

[0063] 1) Keep the first-level solenoid valve 1 started. When the second-level solenoid valve 2 is started, the second-level cylinder 17 is inflated, and the lubricating block 11 is pushed forward by the push rod of the second-level piston 8 and presses against the wheel rim 12 for lubrication;

[0064] 2) When the primary solenoid valve 1 is activated and the secondary solenoid valve 2 is closed, the secondary cylinder 17 is deflated, the piston 8 is pushed back by the push spring 9, the lubricating block 11 no longer presses against the wheel rim 12, and lubrication is suspended;

[0065] 3) When the first-stage solenoid valve 1 is closed, the first-stage cylinder 3 is deflated, the first-stage piston 4 is pushed back by the first spring 7 and leaves the stopper 6, the travel switch SQA is closed, the second-stage solenoid valve 2 is closed, the second-stage cylinder 17 is deflated, the second-stage piston 8 and the lubrication block packaging box 16 return to the origin, and the lubrication block 11 cannot be retracted due to the action of the pawl 15, and extends out of the lubrication packaging box 16 for a certain length, which is the distance D between the lubrication packaging box 16 and the wheel rim 12, and the lubrication stops.

[0066] The present invention adopts a solenoid valve to control the lubrication block 11 to realize a two-stage action mode, that is, the first-stage solenoid valve 1 makes the entire lubrication block packaging box 16 close to the wheel rim 12, and the second-stage solenoid valve 2 makes the second-stage piston 8 push the lubrication block 11 against the wheel rim 12 for lubrication. This method reduces the stroke of the lubrication block 11 during the working process, so that it can quickly enter the working state.

[0067] The above is only a specific implementation scheme of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art can make many possible changes and modifications to the technical scheme of the present invention by using the technical content disclosed above without departing from the scope of the technical scheme of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical scheme of the present invention should fall within the protection scope of the technical scheme of the present invention.

Claims

1. A rail vehicle dry wheel rim lubrication device, comprising a bogie frame, a wheel and a lubrication block, characterized in that: A primary cylinder is installed on the bogie frame, a primary piston is installed in the primary cylinder, the primary piston is connected to one end of the secondary cylinder, the other end of the secondary cylinder is connected to the lubricating block packaging box, the secondary piston is installed in the secondary cylinder, the lubricating block is installed in the lubricating block packaging box, the primary piston drives the secondary cylinder and the lubricating block packaging box to approach or leave the wheel rim, and the secondary cylinder drives the lubricating block to press against or leave the wheel rim.

2. The rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: A primary solenoid valve is installed at the medium input end of the primary cylinder, and a secondary solenoid valve is installed at the medium input end of the secondary cylinder.

3. The rail vehicle dry wheel rim lubrication device according to claim 2, characterized in that: The control end of the first-level solenoid valve is connected to an intermediate relay, and the control end of the second-level solenoid valve is connected to a first time relay and a second time relay. The intermediate relay is used to control the start and close of the first-level solenoid valve, and the first time relay and the second time relay are used to control the start and close of the second-level solenoid valve. A travel switch is installed at the end of the stroke of the first-level piston. After the travel switch is confirmed, the first time relay is energized to start timing. After the delay time t1 is reached, the second-level solenoid valve is started, and the second-level piston pushes the lubrication block and abuts against the wheel rim. At the same time, the second time relay is energized to start timing. After the delay time t2 is reached, the second-level solenoid valve is closed and the second-level piston retreats.

4. The rail vehicle dry wheel rim lubrication device according to claim 3, characterized in that: A stopper is installed at the stroke end of the primary piston.

5. The rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: A first spring for returning the first piston to its original position is installed in the first cylinder, and a second spring for returning the second piston to its original position is installed in the second cylinder.

6. The rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that: A pawl is installed on the inner wall of the lubricating block packaging box, a pawl spring is installed between the lubricating block packaging box and the pawl, grinding teeth are arranged on the lubricating block, and the pawl is inserted into the grinding teeth of the lubricating block to form a fit.

7. The rail vehicle dry wheel rim lubrication device according to claim 3, characterized in that: A start button for starting the first-level solenoid valve at any time and a stop button for closing the first-level solenoid valve at any time are arranged in the vehicle driver's cab.

8. The rail vehicle dry wheel rim lubrication device according to claim 3, characterized in that: The curve detection output signal and the curve completion output signal of the vehicle central control system are connected to the control circuit of the intermediate relay. When the curve detection output signal Y1=1, the first-level solenoid valve is started, and when the curve completion output signal Y2=1, the first-level solenoid valve is closed.

9. An intermittent wheel rim lubrication method for a rail vehicle dry wheel rim lubrication device according to claim 1, characterized in that include: A primary solenoid valve is installed at the medium input end of the primary cylinder, a secondary solenoid valve is installed at the medium input end of the secondary cylinder, a control end of the primary solenoid valve is connected to an intermediate relay, a control end of the secondary solenoid valve is connected to a first time relay and a second time relay, the intermediate relay is used to control the start and stop of the primary solenoid valve, and the first time relay and the second time relay are used to control the start and stop of the secondary solenoid valve; A stopper and a travel switch are installed at the end of the stroke of the first-stage piston; The primary piston drives the secondary cylinder to the end of the primary piston stroke and triggers the stroke switch; The first time relay is energized to start timing. After the timing reaches the delay time t1, the secondary solenoid valve is started, and the secondary cylinder drives the lubrication block until the lubrication block abuts against the wheel rim for lubrication. At the same time as the secondary solenoid valve is started, the second time relay is energized to start timing. After the timing reaches the delay time t2, the secondary solenoid valve is closed, the secondary piston retreats, the lubrication block is separated from the wheel rim, and the first time relay is energized to restart timing, entering the next lubrication cycle of the lubrication block, and repeating this process.

10. The intermittent wheel rim lubrication method of the rail vehicle dry wheel rim lubrication device according to claim 9, characterized in that: The vehicle driver's cab is provided with a start button for starting the first-level solenoid valve at any time and a stop button for closing the first-level solenoid valve at any time; the curve detection output signal and the curve completion output signal of the vehicle central control system are connected to the control circuit of the intermediate relay. When the curve detection output signal Y1=1, the first-level solenoid valve is started, and when the curve completion output signal Y2=1, the first-level solenoid valve is closed.

Images