WO2015099632A1

WO2015099632A1 - Mining machine reduction drive disengagement mechanism

Info

Publication number: WO2015099632A1
Application number: PCT/UA2014/000084
Authority: WO
Inventors: Дмитрий Иванович ПАНКОВ; Виктор Юрьевич ЧУВАНКОВ
Original assignee: Общество С Ограниченной Ответственностью "Корум Групп"
Priority date: 2013-12-24
Filing date: 2014-07-28
Publication date: 2015-07-02

Abstract

1. Technical field: mining machinery. 2. Direct application: in devices for the mechanical disengagement of engines from reduction drives of a cutting tool actuator. 3. Essence of the invention: it is proposed to provide a shaped recess (21-22) along the longitudinal axis (X) of a cup (3), in the form of a groove (21) connected to a nest (22), and to fasten a rod (2) in the recess in an initial position in such a way that a flat area (10) provided on the rod (2) is situated transversely to the longitudinal axis (X) of the cup (3), wherein the rod (2) is installed in the rear portion (4) of the cup (3) and is positioned in the shaped recess with the ability to rotate in the nest (22) and to move in the groove (21) along the longitudinal axis (X) of the cup (3), and the thickness (L10) of the rod (2) with the flat area (10) is made to be proportional to the width (L21) of the groove (21). 4. Technical result: increasing the operational reliability and decreasing the activation time of a reduction drive disengagement mechanism.

Description

MOUNT REDUCER REDUCTION MECHANISM

COMBINE

DESCRIPTION

Technical field

The technical solution relates to mechanical engineering and can be used in mining combines, in particular, in devices for mechanically disconnecting engines from gearboxes of drive of cutting organs.

State of the art

To ensure safety requirements during repair and routine maintenance on coal mining combines, various devices are used to mechanically disconnect engines from cutting gear drive gears. Placement of shutdown mechanisms is carried out both directly in the case of the reducer of the cutting organ of the combine, and on the electric motor of the drive of the cutting organ. Switching on and off is carried out using a torsion shaft through the hollow shaft of the electric motor. The motor bearing cover has a special design for accommodating the elements of the shutdown mechanism in it, providing a predetermined amount of movement of the torsion shaft, as well as fixing it in the extreme (“on”, “off”) positions.

A known design of the shutdown mechanism of the gearbox of the executive body of a mining combine (figure 5) of the company "DAMEL" (Poland) in which:

- the torsion shaft (6) is connected by a pin (13) to the axis (11).

SUBSTITUTE SHEET (RULE 26) - the pin (13) is fixed by a cap (12) spring-loaded on the axis.

- the axis (1 1) is connected to the glass (3) by means of a rigid connection with bearings (8), which are fixed in the glass (3).

Thus, the torsion shaft (6) is paired with a glass (3). The mechanism is as follows in FIG. 5:

- by means of the lever (9) (drive), the spring-loaded rod (2) (locking element) with an eccentric (10) installed in the groove (21 -22) of the body (1) is pulled and rotated, as a result of which the longitudinal locking of the glass (3) is removed.

- using the handle (4) (shank), the cup (3) moves all the way along the longitudinal axis (X), removing the torsion shaft (6) from the clutch with the first gearbox shaft.

The amount of movement of the torsion shaft (6) is regulated by the locking screw (5) (movement limiter), which is installed in the housing (1) and with its cylindrical end enters the restrictive groove (7) of the glass (3).

The disadvantage of this design is:

- the presence of a spring locking element, which may be damaged during operation;

- possible heating of the handle (shank) during engine operation to a temperature of 50 ° C or higher, which entails the use of additional protective equipment for hands from burns;

- the device is controlled with two hands, which increases the complexity and time of blocking.

A task

The basis of creating a utility model is the task:

- simplify the design of the locking element;

- simplify the controls of the gearbox shutdown mechanism; - reduce heat transfer from the engine to the controls of the gearbox shutdown mechanism.

Technical result

As a result of the task, the technical result can be obtained:

- increase operational reliability;

- reducing the activation time of the gearbox shutdown mechanism. Utility Model Disclosure

The solution to this problem is achieved by the fact that in

a shutdown mechanism for a mining gear reducer comprising, mounted in a bearing shield (23), a housing (1) in which a cup (3) with a shank (4), a locking element (2) of the cup (3), which is made in the form of a rod ( 2) and is installed transversely to the longitudinal axis (X) of the glass (3), with the possibility of moving into the groove (21 -22) which is made in the housing (1), the drive (9) of the glass locking element (3), the glass movement limiter (5) mounted transversely to the longitudinal axis (X) of the cup (3), a torsion shaft (6) mated to the cup (3), offers make the groove (21-22) curly along the longitudinal axis (X) of the glass (3) in the form of a groove (21) mating with the socket (22), in the groove in the initial position, fix the rod (2) so that it would be made on the rod ( 2) the flat (10) was placed transversely to the longitudinal axis (X) of the glass (3), while the rod (2) is installed in the shank (4) of the glass (3) and is placed in a curly groove with the possibility of rotation in the socket (22) and movement in the groove (21) along the longitudinal axis (X) of the cup (3), and the thickness (L 10) of the shaft (2) with the flat (10) is proportional to the width (L21) of the groove (21). The essential features of the utility model listed above, which are different from the closest analogue, are necessary and sufficient in all cases to which the scope of legal protection of the utility model applies.

In addition, it is proposed:

- in the case (1), additionally make the second curly groove identical and symmetrical to the first curly groove, while making the nests (22) of the curly grooves coaxial;

- install the rod (2) with the flat (10) in two curly grooves;

- on the rod (2), additionally perform at least one scaffold (S);

- drive the locking element (2) in the form of a lever (9) rigidly connected to the shaft (2) in the shank (4) of the glass (3);

- the lever (9) is made T-shaped.

The utility model is illustrated by an example, the implementation of which is not the only possible, but clearly demonstrates the possibility of achieving the technical result of the proposed new set of essential features.

The essence of the utility model is presented in the drawings, where:

- figure 1 shows a longitudinal section of the gearbox shutdown mechanism in the initial position of the locking element in the on mode of locking the torsion shaft;

- figure 2 shows the shutdown mechanism of the gearbox in the disabled lock torsion shaft;

- Fig. 3 shows the gearbox shutdown mechanism in the disconnected position of the torsion shaft from the first gearbox shaft;

- figure 4 shows the mechanism for disconnecting the gearbox in the disconnected and locked position of the torsion shaft from the first gearbox shaft; Brief Description of the Drawings

Structural elements of figures 1, 2, 3 and 4 are presented as:

1 - housing (bearing cover);

2 - rod (locking element);

3 - a glass;

4 - the shank of the glass (3);

5 - limiter to move the glass (3);

6 - torsion shaft;

7 - restrictive groove of the shank (4);

8 - axis bearing (1 1);

9 - drive locking element in the form of a T-shaped lever;

10 - flax;

1 1 - axis;

12 - cap (pin lock);

13 - pin;

14 ~ limiter latch (5);

15 - a lock ring of an axis;

16 - remote ring;

17 - a lock ring of the bearing (8);

18 - spring;

19 - a hollow shaft of an electric motor;

20a - a slot in the housing (23);

20b - drive groove of the shank (4);

21 - a groove of a figured groove;

22 - nest of a figured groove;

23 - bearing shield;

24 - the first shaft of the gearbox;

25 is the key. Industrial applicability

The operation of the gearbox shutdown is as follows. When the lock is on (Fig. 1), the shank (4) of the cup (3) is located inside the housing (1), which is mounted on the bearing shield (23). The T-shaped lever (9) (handle) is secured with a key (25) on the shaft (2), placed in the drive groove of the shank (20b) and exits through the slot (20a) of the body (1) at an angle of 90 ° to the longitudinal axis (X) ) cups (3). In this case, the cup (3) is coaxial, by means of bearings (8), axis (1 1), retaining rings (15) and (17), distance ring (16) and pin (13) connected to the torsion shaft (6). The pin (13) is fixed by a cap (12), which under the action of a forceful spring (18) is constantly pressed to the end of the torsion shaft (6). Thus, from the T-shaped lever (9) (handles) to the torsion shaft (6), the axial longitudinal movement relative to the hollow shaft of the electric motor (19) and the first gear shaft (24) is transmitted, while from the torsion shaft (6) to T - shaped lever (9) (handle) torque is not transmitted.

The width of the groove (L21) of the figured groove is less than the diameter (D2) of the rod (2) installed in the socket (22) (diameter D22) of the figured groove, which blocks the movement of the glass (3) without turning the flat (10) to a position parallel to the axis (X) glass (3), and, consequently, leads to locking of the glass (3) when the lock is on.

The thickness L21 of the groove (21) of the figured groove and the distance L10 between the parallel flats (10) are selected so that the rod (2) can freely move in the groove (21) of the figured groove along the axis (X).

To open the motor and drive gear, turn the T-lever (9) (handle) 90 ° around the axis rod (2), thereby placing the flats (10) parallel to the longitudinal axis (X) of the glass (3) (parallel to the walls of the groove (21)) (Figure 2). Then, pull the T-shaped lever (9) (handle), move the glass (3), and therefore the torsion shaft (6), by a certain distance equal to the length of the limit groove (7), which interacts when moving with the limiter ( 5) moving the glass (3) (Fig. 3). The locking mechanism of the shutdown in the open state of the torsion shaft (6) with the first shaft (24) of the gearbox is the reverse translation of the T-shaped lever (9) (handle) 90 ° around the axis of the shaft (2) (Fig. 4).

The proposed device gearbox shutdown has a simple design, cheap to manufacture, ergonomic, the control handle is not exposed to intense heat during operation of the electric motor.

Information sources:

1. INSTRUCTIONS FOR USE (TECHNICAL-STARTING DOCUMENTATION) K4-14-366 (edition 1) 2013

“THREE PHASE ASYNCHRONOUS MOTORS

MINING EXPLOSIVE-SAFE type SG7W 490M-4 ",

Ex d I Mb SS 1026,

A.O. Dombrowski Electric Machine Plant DAMEL,

Etc. Jozef Pilsudski 2, 41-300 D-3browa Górnicza, POLAND, tel. +48 32 262-32-31, Fax +48 32 264-34-26, +48 32 264-10-12,

http: www.damel.com.pl, email: office@damel.com.pl

Claims

FORMULA

1. The mechanism for switching off the gearbox of a mining combine, comprising a housing (1) fixed in a bearing shield (23), in which a cup (3) with a shank (4), a locking element (2) of the cup (3), which is made in the form of a rod, is movably mounted (2) and is installed transversely to the longitudinal axis (X) of the glass (3), with the possibility of movement in the groove (21 -22), which is made in the housing (1), the drive (9) of the locking element (2) of the glass (3), the limiter (5) the movement of the glass (3), which is installed transversely to the longitudinal axis (X) of the glass (3), a torsion shaft (6), coupled with the glass (3), different characterized in that the groove (21-22) is made figured along the longitudinal axis (X) of the glass (3) in the form of a groove (21) mated to a socket (22), in which the rod (2) is installed in the initial position so that the rod (2) of the flat (10) is placed transversely to the longitudinal axis (X) of the glass (3), while the rod (2) is installed in the shank (4) of the glass (3) and placed in a curly groove with the possibility of rotation in the socket (22) and movement in the groove (21) along the longitudinal axis (X) of the glass (3), and the thickness (L10) of the rod (2) with the flat (10) is proportional to the width (L21) of the groove (21).

2. The mechanism for switching off the gearbox of a mining combine according to claim 1, characterized in that in the housing (1) a second shaped groove is additionally made identical and symmetrical to the first shaped groove, while the slots (22) of the shaped grooves are made coaxial.

3. The mechanism for disconnecting the gearbox of a mining combine according to claim 2, characterized in that the rod with a flat is installed in two curly grooves.

4. The mechanism for switching off the gearbox of a mining combine according to claim 1, 2 or 3, characterized in that at least one flat (10) is additionally made on the shaft (2).

5. The mechanism of shutting down the gearbox of a mining combine according to claim 1, 2, 3 or 4, characterized in that the drive of the locking element (2) is made in the form of a lever (9) rigidly connected to the shaft (2) in the shank (4) of the glass (3 )

6. The mechanism for switching off the gearbox of a mining combine according to claim 5, characterized in that the lever (9) is T-shaped.