Monorail crane high-speed walking speed reducer of fixed structure

Abstract

The utility model relates to the field of speed reducers, in particular to a monorail crane high-speed walking speed reducer with a fixed structure. The problems that in the running process of equipment on a downhill road section, parts in a speed reducer of the equipment can be reversely dragged, a bevel gear is in a floating state, the bevel gear rotates reversely in the floating state, teeth are prone to being hit, and tooth tops of the gear can be broken due to tooth hitting are solved. The speed reducer comprises a speed reducer box body; the outer wall of the outer ring of the first bearing is fixed on the inner wall of the speed reducer box body; the outer wall of the planet carrier is connected with the inner wall of the inner ring of the first bearing; the planet carrier is fixed on the speed reducer box body through the bearing, so that the floating state of the planet carrier in the original scheme is changed into the current fixed state. And the meshing clearance between the planet wheel and the inner gear is eliminated, so that the original clearance fit is changed into the current interference fit. The service life of the planet gear and the inner gear is prolonged, and the failure rate in the meshing state is reduced.

Description

Technical Field

[0001] The utility model relates to the field of speed reducers, in particular to a high-speed travel speed reducer for a monorail crane with a fixed structure. Background Art

[0002] Planetary reducers are widely used industrial products that can reduce the speed of motors while increasing output torque. Planetary reducers can be used as supporting components in industries such as lifting, excavation, transportation, and construction;

[0003] Planetary reducer is a transmission mechanism, which consists of an inner gear ring tightly combined with the gear box housing. There is a sun gear driven by external power in the center of the ring gear. Between the two is a set of planetary gears composed of three gears equally divided and assembled on the tray. The planetary gears float in the middle supported by the output shaft, inner gear ring and sun gear. When the input power drives the sun gear, it can drive the planetary gear to rotate and revolve along the center according to the trajectory of the inner gear ring. The rotation of the planet drives the output shaft connected to the tray to output power.

[0004] Monorail crane is a means of transport for transporting personnel in coal mines. The special equipment has a relatively high operating speed, with an input speed of 4800rpm. In order to cope with the high speed input, the first-stage planetary gear adopts a helical gear structure, which has a larger bite surface and less vibration and noise.

[0005] Monorail crane is a means of transportation for transporting personnel in coal mines. The operating speed of special equipment is relatively high, with an input speed of 4800rpm. In order to cope with high-speed operating conditions, the planetary gears are of helical gear structure. Conventionally designed planetary structures are in a floating state and automatically align during operation. However, when the equipment is running on a downhill section, the parts in the equipment reducer will be dragged back, causing the helical gears to be in a floating state. Reversing the helical gears in a floating state will easily cause tooth knocking, which will cause the gear tooth tip to break. Utility Model Content

[0006] (1) Technical issues to be solved

[0007] In order to overcome the problem that the equipment will be dragged backwards due to the downhill section, the helical gear will easily get in gear when reversed in the floating state, causing the gear tooth tip to break.

[0008] (2) Technical solution

[0009] The technical solution of the utility model is: a fixed structure monorail crane high-speed travel reducer, comprising:

[0010] Reducer housing;

[0011] A first bearing, wherein the outer wall of the outer ring of the first bearing is fixed to the inner wall of the reducer housing;

[0012] A planet carrier, the outer wall of which is connected to the inner wall of the inner ring of the first bearing;

[0013] a second bearing, wherein the inner wall of the inner ring of the second bearing is connected to the outer wall of the planet carrier;

[0014] A planetary wheel, wherein the inner wall of the inner ring of the planetary wheel is connected to the outer wall of the outer ring of the second bearing;

[0015] An internal gear, wherein the internal teeth of the internal gear are connected to the outer wall of the planetary gear.

[0016] Preferably, an outer wall of the planet carrier is provided with a mounting groove matched with the inner wall of the first bearing inner ring.

[0017] Preferably, an inner wall of the first bearing inner ring is provided with a mounting groove matched with an outer wall of the planet carrier.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The planet carrier is fixed to the reducer housing through bearings, so that the floating state of the planet carrier in the original scheme is changed to the current fixed state. The clearance between the planetary gear and the internal gear is eliminated, so that the original clearance fit is changed to the current interference fit. The life of the planetary gear and the internal gear is extended, and the failure rate in the meshing state is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 The figure shows the structure of the old solution.

[0023] Description of reference numerals: 1. reducer housing; 2. first bearing; 3. planet carrier; 4. second bearing; 5. planetary gear; 6. internal gear. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Embodiment 1:

[0026] See also Figure 1-2 The utility model provides an embodiment: a fixed structure monorail crane high-speed travel reducer, comprising:

[0027] Reducer housing 1, the reducer model is GTR-T reducer;

[0028] The first bearing 2, the outer wall of the outer ring of the first bearing 2 is fixed to the inner wall of the reducer housing 1, and the first bearing 2 enables the connection between the planetary gear 5 and the internal gear 6 to form an interference fit connection, so that the planetary gear 5 can move stably during the operation of the device, reducing the failure rate in the meshing state;

[0029] A planet carrier 3, the outer wall of the planet carrier 3 is connected to the inner wall of the inner ring of the first bearing 2;

[0030] A second bearing 4, the inner wall of the inner ring of the second bearing 4 is connected to the outer wall of the planet carrier 3, and the second bearing 4 is used to connect the planet carrier 3 and the planetary gear 5;

[0031] A planetary gear 5, wherein the inner wall of the inner ring of the planetary gear 5 is connected to the outer wall of the outer ring of the second bearing 4;

[0032] The inner gear 6 has inner teeth connected to the outer wall of the planetary gear 5. The outer wall of the planetary carrier 3 is provided with a mounting groove matched with the inner wall of the inner ring of the first bearing 2, and the inner wall of the inner ring of the first bearing 2 is provided with a mounting groove matched with the outer wall of the planetary carrier 3.

[0033] The original clearance fit between the planetary gear 5 and the internal gear 6 is changed to an interference fit between the planetary gear 5 and the internal gear 6 through the above connection method;

[0034] Conventional planetary structures are in a floating state and automatically align during operation. The new solution adds a bearing to the outer circle of the planet carrier 3, turning the original floating structure into a fixed structure to ensure uniform and stable meshing of the gear and the gear ring. The reducer planet carrier 3 is fixed to the reducer housing 1 through the first bearing 2, and the planetary gear 5 is fixed to the planetary carrier 3 through the second bearing 4. The planetary gear 5 and the internal gear 6 are interference fit.

[0035] Through the above steps, the planet carrier 3 is fixed to the reducer housing 1 through the bearing, so that the floating state of the planet carrier 3 in the original scheme is changed to the current fixed state. The clearance between the planetary gear 5 and the internal gear 6 is eliminated, so that the original clearance fit is changed to the current interference fit. The life of the planetary gear 5 and the internal gear 6 is extended, and the failure rate in the meshing state is reduced.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A fixed structure monorail crane high-speed travel reducer, characterized in that: include: Reducer housing (1); A first bearing (2), wherein the outer wall of the outer ring of the first bearing (2) is fixed to the inner wall of the reducer housing (1); A planet carrier (3), the outer wall of the planet carrier (3) being connected to the inner wall of the inner ring of the first bearing (2); A second bearing (4), the inner wall of the inner ring of the second bearing (4) being connected to the outer wall of the planet carrier (3); A planetary wheel (5), wherein the inner wall of the inner ring of the planetary wheel (5) is connected to the outer wall of the outer ring of the second bearing (4); An internal gear (6), the internal teeth of the internal gear (6) being connected to the outer wall of the planetary gear (5).

2. According to the fixed structure monorail crane high-speed travel reducer of claim 1, it is characterized by: The outer wall of the planet carrier (3) is provided with a mounting groove matched with the inner wall of the inner ring of the first bearing (2).

3. The fixed structure monorail crane high-speed travel reducer according to claim 1, characterized in that: The inner wall of the inner ring of the first bearing (2) is provided with a mounting groove which is matched with the outer wall of the planet carrier (3).

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