RU177551U1 - The drive of the movement mechanism in the running trolleys of the running platform of the railway crane - Google Patents

Abstract

The invention relates to structural elements of a crane, such as devices for transmitting energy to moving elements of cranes, and in particular to electric drives with control elements, and can be used, in particular, on modernized large-capacity cranes of the EBC type.

The task is to increase the efficiency of the drive of the movement mechanism.

The inventive drive of the movement mechanism comprises an electric motor 2 powered from a direct current source 1, connected through an induction clutch 3 to a gearbox 4, on the end of the driven axis of which a self-propelled gear 5 is mounted, which is engaged with the gear wheel 6 of the driving pair. The electric motor 2 of the drive is equipped with a control coil 7, as well as a button 8 for starting it. To introduce the self-propelled gear 5 into gearing, an additional hydraulic cylinder 9 was introduced for input-output of the gear 5 out of engagement and a two-position electrohydraulic distributor 10 controlling it to switch the pressure head 11 and drain 12 of the oil flow sections moving the rod 13 with the piston 14 in the hydraulic cylinder 9. The pressure section 11 is communicated by the highway 15 with the cavity of the hydraulic cylinder 9 from the piston 14 through the electrodistributor 10 and the adjustable throttle 16, and the drain section 12 is connected with the cavity of the hydraulic cylinder 9 through the electric droraspredelitel manifold 10 with the cavity 17 of the hydraulic cylinder 9 with the piston rod side 13. Highways 15 and 17 are interconnected bypass valve 18 (FIG. 1). The electrohydrodistributor 10 is supplied from a direct current source 1 through an induction coupling 3. It is equipped with left and right self-propelled buttons 19, 20 and 21, 22 for turning off the left and right self-propelled guns, two coils 23 and 25 and two control coils 24, 26, respectively, of the pressure section 11 and the drain section 12 , as well as four warning lights 27-30 on and off the left and right self-propelled guns and associated with them four normally open and normally closed block contacts 31-34 (Fig. 2).

Introduction to the drive of additional elements - a hydraulic cylinder for gear input-output gearing and an electrohydrodistributor controlling it to switch the pressure and drain sections of the oil flow moving the hydraulic cylinder rod, in conjunction with the pressure section being communicated by one line with the hydraulic cylinder cavity from the piston side through the electrodistributor and adjustable the throttle, by communicating the drain section through the electrodistributor with a second line with a hydraulic cylinder cavity from the side of the rod and the communication of both lines between themselves bypass valve allows you to make the introduction of the self-propelled gear into gear automatic, which, in combination with the presence of controls for starting the electric motor (control coil and start button) and controls for left and right self-propelled guns and control their inclusion (buttons and control coils, signal lamps, block contacts) makes the operation of the drive reliably controlled, providing more efficient operation of the drive as a whole. 2 ill.

Description

The invention relates to structural elements of a crane, such as devices for transmitting energy to moving elements of cranes, and in particular to electric drives with control elements, and can be used, in particular, on modernized large-capacity cranes of the EBC type.

The closest in technical essence to the claimed is the drive mechanism for the movement of the undercarriage of the undercarriage of the crane EDK-1000/4, described in the book of the authors Tomilina I.P. and Novikova G.I. "EBC type cranes." The device and operation ", M. 2000, pp. 36, 87 and selected as a prototype (see. Appendix to the application).

One of the main mechanisms of the EBC crane is the movement mechanism (the so-called self-propelled) of the crane running gear in the form of a running platform with two running trolleys. Moreover, each of the running trolleys includes a drive mechanism for its movement.

The well-known drive of the movement mechanism in the trolley consists of a gearbox, an induction coupling and an electric motor supported by a frame. An induction coupling connects the motor to the gearbox, at the end of the driven axis of which a self-propelled gear is mounted, which is engaged by means of a lever gear into engagement with a gear pressed onto the drive pair. When following the crane in rolling stock, the gear is disengaged. In the operating position, the drive gear is engaged with the gear on the wheelset and transmits rotational motion to effect the movement of the crane.

The use of a lever gear in the gearing mechanism requires setting its automatic mode manually - to enter the gear into gearing, at least two people are needed, one of whom is scrolling with the help of an electric motor, the gearbox, and the second gears are engaged. In addition, the lever transmission provides for the principle of sequential transmission of forces to the undercarriage, which reduces its efficiency. The unsatisfactory operation of the linkage due to the blockage of vertical levers reduces the quality of service of the crane. As a result, the disadvantage of the known drive is the not very high efficiency of the drive of the movement mechanism.

The objective is to increase the efficiency of the drive of the movement mechanism.

The problem is solved in that in the drive of the movement mechanism in the running trolleys of the running platform of the railway crane, containing an electric motor fed from a direct current source, connected through an induction clutch with a gearbox, at the end of the driven axis of which there is a self-propelled gear gearing into engagement with the gear wheel of the driving pair , according to a utility model, the electric motor of the drive is equipped with a control coil, as well as a button for starting it, to introduce the gear into gearing, additional the hydraulic cylinder for input-output of the self-propelled gear from the gearing and the on-off electrohydrodistributor controlling it for switching the hydraulic cylinder rod of the pressure and drain sections of the oil flow, while the pressure section is communicated by one line through the electrohydrodistributor and the adjustable throttle with the hydraulic cylinder cavity on the piston side, and the drain section communicated through an electrohydrodistributor by a second highway with a cavity of the hydraulic cylinder from the side of the rod, both lines are communicated with I am waiting for myself by a bypass valve, the electrohydrodistributor is powered from a direct current source through an induction coupling and is equipped with buttons for turning on and off the left and right self-propelled guns, two control coils for two pressure sections and two control coils for two drain sections, as well as four signal lamps for turning on and off the left and right self-propelled vehicles and four normally open and normally closed block contacts associated with them.

Introduction to the drive of additional elements - a hydraulic cylinder for gear input-output gearing and an electrohydrodistributor controlling it to switch the pressure and drain sections of the oil flow moving the hydraulic cylinder rod - in conjunction with the pressure section being communicated by one line with the hydraulic cylinder cavity from the piston side through the electrodistributor and adjustable throttle, message of the drain section through the electrohydrodistributor by the second highway with the cavity of the hydraulic cylinder from the stem side the communication of both lines between themselves bypass valve, allows you to make the introduction of the self-propelled gear gear mesh automatically, which, in combination with the presence of controls for starting the electric motor (control coil and start button) and controls for left and right self-propelled guns and control of their inclusion (buttons and control coils, signal lamps, block contacts) makes the operation of the drive reliably controlled, providing more efficient operation of the drive as a whole.

The technical result - automation of gearing, ease of management and control of the main components of the drive.

The inventive drive has a novelty in comparison with the prototype, differing from it by such significant features as supplying the electric motor with control elements - a control coil, as well as a start button, the presence of additional nodes for engaging the self-propelled gear gear: a hydraulic cylinder and a two-position electrodistributor controlling it to switch the pressure and drain sections of the oil flow, moving the rod of the hydraulic cylinder, the message of the pressure section of one line through electrohydras a limiter and an adjustable throttle with a hydraulic cylinder cavity on the piston side, a drain section communicating via an electrohydrodistributor with a second highway with a hydraulic cylinder cavity on the rod side, the two highways are connected to each other by a bypass valve, energizing the electrodistributor from a direct current source through an induction coupling, supplying it with left and right-hand self-propelled guns, two control coils of two pressure sections and two control coils of two drain sections, and also four warning lights on and off the left and right self-propelled guns and associated with them four normally open and normally closed block contacts, which together ensure the achievement of a given result.

The utility model can be widely used in the modernization of powerful railway cranes EBC, and therefore meets the criterion of "industrial applicability".

The utility model is illustrated by drawings, which are presented on:

- FIG. 1 is a functional diagram of a drive of a movement mechanism;

- FIG. 2 - electrical diagram of the drive of the movement mechanism.

The inventive drive of the movement mechanism in each of the running trolleys of the running platform of the railway crane contains an electric motor 2 powered from a direct current source 1, connected through an induction clutch 3 with a gear 4, at the end of the driven axis of which a self-propelled gear 5 is installed, which is engaged with the gear wheel 6 of the drive couples. In this case, the electric motor 2 of the drive is equipped with a control coil 7, as well as a button 8 for starting it. To introduce the gear 5 of the self-propelled gear into the gearing, an additional hydraulic cylinder 9 is introduced for input-output of the gear 5 from the gear and a two-position electrodistributor 10 controlling it to switch the pressure head 11 and the drain 12 of the oil flow sections moving the rod 13 with the piston 14 in the hydraulic cylinder 9. When this pressure section 11 is communicated by highway 15 with the cavity of the hydraulic cylinder 9 from the piston 14 through the electrodistributor 10 and the adjustable throttle 16, and the drain section 12 is communicated with the cavity of the hydraulic cylinder 9 through e electrohydrodistributor 10 line 17 with the cavity of the hydraulic cylinder 9 from the side of the rod 13. Highways 15 and 17 are interconnected bypass valve 18. (Fig. 1).

The electrohydrodistributor 10 is supplied from a direct current source 1 through an induction coupling 3. It is equipped with left and right self-propelled buttons 19, 20 and 21, 22 for turning off the left and right self-propelled guns, two coils 23 and 25 and two control coils 24, 26, respectively, of the pressure section 11 and the drain section 12 , as well as four warning lights 27-30 on and off the left and right self-propelled guns and associated with them four normally open and normally closed block contacts 31-34. (Fig. 2).

The device operates as follows. Before starting work, it is necessary to start the crane engine, turn on the hydraulic pump and make sure that the outriggers are folded into the transport position.

Next, the operator on the control panel presses the buttons 19, 20 "Left / Right self-propelled on", after which the electrodistributor 10 opens the pressure section 11 of the stream.

Oil is supplied to the electrohydrodistributor 10 from a pump (not shown in the diagram) installed on the crane platform to the pressure section 11. Oil through the electrodistributor 10 enters the adjustable throttle 16 and then into the piston cavity of the hydraulic cylinder 9 and moves the rod 13 of the hydraulic cylinder. 9

After that, the hydraulic cylinder 9 introduces the self-propelled gear 5 all the way into the gear 6 of the driving wheelset. After gear 5 has reached the stop, it is necessary to press button 8 “Self-propelled engine” on the instrument panel for a few seconds.

When the button 8 is pressed, the induction motor 2 starts and rotates the self-propelled gearbox 4, on which the self-propelled gear 5 is mounted on the slots.

As a result, the self-propelled gear 5 will rotate several degrees. If the rotation of the gear 5 will not be enough until the grooves coincide with the gear wheel 6, you will need to press the "Self-propelled engines" button again.

As soon as the grooves of the gear 5 of the self-propelled gun and the gear wheel 6 of the driving pair coincide, the hydraulic cylinder 9 will introduce the gear 5 until it is fully engaged. After gear 5 fully engages, the warning lamp 27, 29 “Self-propelled lion / right” is on on the control panel.

To disengage gear 5, press buttons 21, 22 “Left / right self-propelled off” on the control panel. After that, the electrohydroallocator 10 will turn on the drain section 12 section, and the hydraulic cylinder 9, moving the rod 13, will disengage the self-propelled gear 5. The excess pressure when the rod 13 reaches its final position is regulated by the bypass valve 18, sending excess to the drain section 12 through the electrodistributor 10. After the gear 5 is completely out of gear, the warning lamp 28, 30 “Self-propelled left / right” will light on the control panel.

In this case, the electrical part of the circuit must explain in more detail the following. Source 1 DC is the internal network of the crane. The power to the electric motor 2 is supplied from the current source 1, then to the induction coupling 3, to the on / off buttons 19, 20/21, 22, then to the control coils 23-26 of the electrodistributor 10. The signal lamps 27, 29 on and off 28, 30 self-propelled guns light up when the gear 5 reaches the end positions, while the limit switches are closed, which in turn closes the power supply of the block contacts 31-34 to the signal lamps 27-30.

In addition, the gear input mechanism when in the transport position should have reliable fixation from spontaneous transition of the pinion gear into engagement.

When you press the left / right self-propelled self-propelled button 19/20, a circuit is created: power supply 1, clutch (ring current collector) 3, power button 19 (20), coil 23 (25), signal lamp 28 (30). The gear wheel 5 of the self-propelled gun has reached the stop and, if it has engaged, the terminal switch 32 (34) is closed, the self-propelled gun 28 (30) light comes on; if the gear 5 is not engaged, it is necessary to press the button 8 of the inclusion of the coil 7 of the control motor 2.

When the left (21) / right (22) self-propelled off button is pressed, a circuit is created: power supply 1, clutch 3, off button 21 (22), coil 24 (26), signal lamp 27 (29). Next, the gear 5 is out of engagement, the limit switch with the block contact 31 (33) closes, the lamp for turning on the self-propelled gun 28 (30) lights up.

Compared with the prototype, the inventive displacement drive is more efficient in operation.

Claims (1)

The drive mechanism of the movement in the running trolleys of the running platform of the railway crane, containing an electric motor fed from a direct current source, connected through an induction coupling to a gearbox, on the end of the driven axis of which a self-propelled gear is mounted, engaged into engagement with the gear wheel of the driving pair, characterized in that the drive motor equipped with a control coil, as well as a start button, for introducing the self-propelled gear into meshing, an additional hydraulic cylinder for input-output is introduced self-propelled gears from engagement and a two-position electrohydrodistributor controlling it for switching the hydraulic cylinder rod of the pressure and drain sections of the oil flow, while the pressure section is communicated by one main line with the cylinder cavity from the piston side through the electrodistributor and an adjustable throttle, and the drain section is communicated through the second hydraulic distributor the cavity of the hydraulic cylinder from the side of the rod, both lines are interconnected by a bypass valve, The hydraulic distributor is powered from a direct current source through an induction coupling and is equipped with buttons for turning on and off the left and right self-propelled guns, two control coils for two pressure sections and two control coils for two drain sections, as well as four warning lights for turning on and off the left and right self-propelled guns and associated four normally open and normally closed block contacts.

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