CN112897333A

CN112897333A - Low-speed four-wheel trolley device

Info

Publication number: CN112897333A
Application number: CN202110417016.2A
Authority: CN
Inventors: 魏兴; 卢立建; 杜庆升; 田青益; 李豪
Original assignee: Dalian Yiliya Construction Machinery Co Ltd; Sany America Inc
Current assignee: Zhejiang Sany Equipment Co Ltd; Dalian Yiliya Construction Machinery Co Ltd; Sany America Inc
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-06-04

Abstract

The invention relates to the technical field of cranes, and provides a low-speed four-wheel trolley device, which comprises: the trolley comprises a trolley frame, an open gear system, a driving device and wheel groups symmetrically arranged on two sides of the open gear system; the wheel set and the open gear system are arranged in the trolley frame; the wheel group includes: the driving wheel set and the driven wheel set; a set of active wheels comprising: a drive wheel, a wheel gear and a drive wheel axle; the driving wheel is arranged on a driving wheel shaft, and a wheel gear is arranged on the driving wheel; the driven wheels and the driving wheels of the driven wheel set are arranged on the trolley track in a matching way; an open gear system comprising: a pinion shaft, a first pinion gear, a bull gear and a second pinion gear; one end of the pinion shaft is provided with a driving device, and the other end of the pinion shaft is provided with a first pinion; the first small gear is meshed with the large gear; the bull gear and the second pinion are coaxial; the second pinion gear is in mesh with the wheel gear. The invention can improve the bearing capacity of the trolley.

Description

Low-speed four-wheel trolley device

Technical Field

The invention relates to the technical field of cranes, in particular to a low-speed four-wheel trolley device.

Background

In modern industrial production, cranes are indispensable material handling equipment. The carriages are important components of the running mechanism of the rail-mounted crane and are divided into active carriages and passive carriages according to whether a driving device is provided or not. The trolley bears the weight of the whole crane and the lifted object and can carry the crane and the lifted object to move along the track, so that the displacement of the material is realized.

In the existing trolley device, the number of wheels is generally 2, and the number of wheels of an individual trolley is 4; the wheel is directly driven to rotate by the motor and the reducer, or the open gear is additionally arranged to increase the first-stage speed reduction. However, the conventional carriage device has the following technical problems:

(1) the bearing capacity of the double-wheel trolley is small.

(2) In order to improve the bearing capacity, the diameter of the tread of the wheel needs to be increased, but the reduction is realized by a standard speed reducer or a first-stage open gear, so that the large transmission ratio is difficult to obtain, and the low-speed running is difficult to realize.

(3) If the rotational speed of the motor is reduced by variable-frequency speed control, the motor power capacity is wasted because the motor is constant torque when operating at a rated rotational speed or less.

(4) If a plurality of speed reducers are connected in series, the cost is higher, and the size and the weight of the speed reducers are larger, and the installation is difficult.

(5) The existing four-wheel trolley lacks a space balancing device, and the four-wheel pressure is difficult to be equal due to processing and manufacturing errors, or the trolley frame bears unexpected additional load.

Disclosure of Invention

The invention mainly solves the technical problems in the prior art, and provides a low-speed four-wheel trolley device, which is used for improving the bearing capacity of a trolley, enabling loads borne by four wheels to be basically balanced and being applicable to low-speed running working conditions.

The invention provides a low-speed four-wheel trolley device, comprising: the trolley frame 3, the open gear system 5, the driving device 6 and the wheel groups symmetrically arranged at two sides of the open gear system 5;

the wheel set and the open gear system 5 are arranged in the trolley frame 3;

the wheel group includes: the driving wheel set 1 and the driven wheel set 2; the active wheel set 1 includes: a drive wheel 11, a wheel gear 12 and a drive wheel shaft 14; the driving wheel 11 is arranged on a driving wheel shaft 14, and a wheel gear 12 is arranged on the driving wheel 11;

the driven wheels of the driven wheel set 2 and the driving wheels 11 are arranged on the trolley track 8 in a matching way;

the open gear system 5 comprises: a pinion shaft 51, a first pinion gear 55, a large gear 52, and a second pinion gear 53; one end of the pinion shaft 51 is provided with a driving device 6, and the other end is provided with a first pinion 55; the first small gear 55 is meshed with the large gear 52; the gearwheel 52 and the second pinion 53 are coaxial; the second pinion gear 53 meshes with the wheel gear 12.

Preferably, a spherical hinge 4 is arranged on the trolley frame 3.

Preferably, two ends of the trolley frame 3 are respectively provided with a guide device 7;

the guide device 7 includes: a guide frame 71 and two guide wheel sets 72;

the guide frame 71 is arranged on the trolley frame 3, and a guide wheel set 72 is arranged below the guide frame 71;

the guide wheel set 72 is against the trolley rail 8.

Preferably, the guide device 7 includes: a guide wheel 721, an eccentric shaft 722 and a gland 723;

the upper part of the eccentric shaft 722 is fixed on the guide frame 71 through a gland 723 and a bolt; the eccentric shaft 722 has a lower portion fixed to the guide wheel 721.

Preferably, the driving wheel shaft 14 is provided with bearing assemblies 15 at both ends thereof.

Preferably, the large gear 52 is mounted with a second small gear 53 via a gear system shaft 54.

Preferably, the driving device 6 adopts a speed reducing motor or a hydraulic driving device.

Compared with the prior art, the low-speed four-wheel trolley device provided by the invention has the following advantages:

1. the four-wheel trolley with the wheels arranged in a rectangular shape can improve the bearing capacity of the trolley under the condition that the number of the trolleys is not increased.

2. And the two-stage open gear transmission is adopted, so that the requirement on the transmission ratio of the speed reducer is reduced.

3. And the four wheels are stressed in a balanced manner by the spherical hinges.

4. The adjustable guide device is arranged, so that the equipment applying the invention can run along a linear track and can also run along a curved track.

Drawings

FIG. 1 is a schematic view of a low speed four wheel trolley assembly provided by the present invention;

FIG. 2 is a schematic view of a primary wheel set provided by the present invention;

FIG. 3 is a schematic view of an open gear system provided by the present invention;

FIG. 4 is a schematic view of an open gear system mounted hydraulic drive provided by the present invention;

FIG. 5 is a schematic view of a guide provided by the present invention;

FIG. 6 is a schematic view of a guide wheel set provided by the present invention;

fig. 7 is a top view of a guide wheel assembly provided by the present invention.

Reference numerals: a main motor vehicle wheel set 1; a driven wheel set 2; a bogie frame 3; a spherical hinge 4; an open gear system 5; a drive device 6; a guide device 7; a trolley rail 8; a driving wheel 11; a wheel gear 12; a bolt set and a sleeve 13; a drive wheel axle 14; a bearing assembly 15; a pinion shaft 51, a bull gear 52; a second pinion gear 53; a gear system shaft 54; a first pinion gear 55; a guide frame 71; a guide wheel group 72; guide wheel 721, eccentric shaft 722; a gland 723.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.

As shown in fig. 1, a low-speed four-wheel bogie device according to an embodiment of the present invention includes: the bogie comprises a bogie frame 3, an open gear system 5, a driving device 6 and wheel sets symmetrically arranged on two sides of the open gear system 5.

The wheel sets and the open gear system 5 are arranged in the bogie frame 3. The trolley frame 3 is movably arranged above the trolley rails 8.

The wheel group includes: an active wheel set 1 and a passive wheel set 2. As shown in fig. 2, the main wheel set 1 includes: a drive wheel 11, a wheel gear 12 and a drive wheel shaft 14; the driving wheel 11 is arranged on a driving wheel shaft 14, and a wheel gear 12 is arranged on the driving wheel 11. Specifically, the wheel gear 12 is fixed on the side surface of the driving wheel 11 through a bolt group and a sleeve 13 to form a whole, and is connected with a driving wheel shaft 14, two ends of the driving wheel shaft 14 are respectively provided with a bearing assembly 15, and the bearing assemblies 15 are installed on the bogie frame 3.

The driven wheel set 2 is similar to the driving wheel set 1 in form, except that a wheel gear, a bolt set and a sleeve are not mounted. The driven wheels and the driving wheels 11 of the driven wheel set 2 are arranged on the trolley rails 8 in a matching mode, and the driven wheels and the driving wheels 11 can move on the trolley rails 8.

The open gear system 5 comprises: a pinion shaft 51, a first pinion gear 55, a large gear 52, and a second pinion gear 53; one end of the pinion shaft 51 is provided with a driving device 6, and the other end is provided with a first pinion 55; the first small gear 55 is meshed with the large gear 52; the gearwheel 52 and the second pinion 53 are coaxial; the second pinion gear 53 meshes with the wheel gear 12. In particular, the gearwheel 52 is fitted with a second pinion 53 via a gear system shaft 54. In particular, the gear 53 in the pinion shaft 51 and the bull gear 52 mesh to slow down the open gear system 5 in one stage. The large gear 52 and the second small gear 53 are jointly mounted for synchronous rotation on a gear system shaft 54. The second pinion gear 53 is engaged with the wheel gear 12 for two-stage reduction. Bearings are mounted on both ends of the gear system shaft 54 and the pinion shaft 51, and are mounted on the bogie frame 3. Drive arrangement 6 adopts gear motor or hydraulic drive device, if drive arrangement 6 adopts "trinity" gear motor, then the pinion shaft can go deep into "trinity" gear motor's hollow output shaft, if adopt the hydraulic drive device structure as figure 4.

Further, a spherical hinge 4 is arranged on the trolley frame 3; the ball joint 4 is used for connecting with the equipment applying the invention through bolts, welding or other methods.

And two ends of the trolley frame 3 are respectively provided with a guide device 7. As shown in fig. 5, the guide device 7 includes: a guide frame 71 and two guide wheel sets 72; the guide frame 71 is arranged on the trolley frame 3, and a guide wheel set 72 is arranged below the guide frame 71; the guide wheel set 72 is against the trolley rail 8.

As shown in fig. 6 and 7, the guide device 7 includes: a guide wheel 721, an eccentric shaft 722 and a gland 723; the upper part of the eccentric shaft 722 is fixed on the guide frame 71 through a gland 723 and a bolt; the lower part of the eccentric shaft 722 fixes the guide wheel 721 through a bolt group and a retainer ring. The guide device 7 is installed on the trolley frame 3 through bolts, and the guide wheels 721 are positioned on the inner side of the trolley rail 8, so that the space is saved. By rotating the eccentric shaft 722, the gap between the guide wheel 721 and the track can be adjusted to offset the installation error of the guide device 7, thereby improving the versatility of the present invention.

The operating principle of the low-speed four-wheel trolley device provided by the embodiment is as follows: the driving device 6 works to drive the pinion shaft 51 of the open gear system 5 to rotate, the first pinion 55 rotates to drive the large gear 52 to rotate, the second pinion 53 coaxial with the large gear 52 drives the wheel gear 12 of the driving wheel set 1, the wheel gear 12 rotates to drive the driving wheel set 1 to rotate, and the driven wheel set is driven to roll on the track 8, so that the invention can run on the track 8.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-speed four-wheel trolley device is characterized by comprising: the trolley comprises a trolley frame (3), an open gear system (5), a driving device (6) and wheel sets symmetrically arranged on two sides of the open gear system (5);

the wheel set and the open gear system (5) are arranged in the trolley frame (3);

the wheel group includes: the driving wheel set (1) and the driven wheel set (2); the primary wheel set (1) comprises: a driving wheel (11), a wheel gear (12) and a driving wheel shaft (14); the driving wheel (11) is arranged on a driving wheel shaft (14), and a wheel gear (12) is arranged on the driving wheel (11);

the driven wheels and the driving wheels (11) of the driven wheel set (2) are arranged on the trolley track (8) in a matching way;

the open gear system (5) comprising: a pinion shaft (51), a first pinion gear (55), a large gear (52), and a second pinion gear (53); one end of the pinion shaft (51) is provided with a driving device (6), and the other end is provided with a first pinion (55); the first small gear (55) is meshed with the large gear (52); the gearwheel (52) and the second pinion (53) are coaxial; the second pinion gear (53) is meshed with the wheel gear (12).

2. A low-speed four-wheeled trolley device according to claim 1, characterized in that said trolley frame (3) is provided with a ball joint (4).

3. A low-speed four-wheel bogie device according to claim 1, wherein guide means (7) are provided at both ends of the bogie frame (3), respectively;

the guiding device (7) comprises: a guide frame (71) and two guide wheel sets (72);

the guide frame (71) is arranged on the trolley frame (3), and a guide wheel set (72) is arranged below the guide frame (71);

the guide wheel set (72) leans against the trolley track (8).

4. A low-speed four-wheeled dolly device according to claim 3, wherein the guide means (7) comprises: a guide wheel (721), an eccentric shaft (722) and a gland (723);

the upper part of the eccentric shaft (722) is fixed on the guide frame (71) through a gland (723) and a bolt; the lower part of the eccentric shaft (722) is fixed with a guide wheel (721).

5. A low-speed four-wheel bogie unit according to claim 1 in which the drive wheel axle (14) is provided at each end with a bearing assembly (15).

6. A slow four-wheel bogie unit according to claim 1, in which the bull gear (52) is fitted with a second pinion (53) by means of a gear system shaft (54).

7. A low-speed four-wheel bogie unit according to claim 1, in which the drive unit (6) is a reduction motor or a hydraulic drive unit.