CN216894379U - Automatic turning device of coal mining machine - Google Patents

Abstract

The utility model discloses an automatic turning device of a coal mining machine, which comprises a coal mining machine body, wherein four corners of the bottom of the coal mining machine body are fixedly connected with lifting mechanisms, one end of the bottom of each lifting mechanism is fixedly connected with an arc-shaped sliding seat, the outer wall of each arc-shaped sliding seat is sleeved with a support ring, the bottom of the circumferential inner wall of each support ring is fixedly connected with a cross, a circular hole is formed in the middle of each cross, a long gear penetrating through the circular hole is fixedly connected to the middle of the bottom of the coal mining machine body, and rotating mechanisms are arranged between the outer wall of each long gear and two ends of the top of each cross. The height of the convex template, the arc-shaped sliding seat and the support ring is adjusted through the four hydraulic cylinders, the whole coal mining machine body is jacked up, the long gear, the coal mining machine body and the lifting mechanism are driven to rotate by utilizing the meshing action of the tooth grooves and the long gear, the position of a scraper bucket of the coal mining machine body is changed, and the automatic turning operation of the whole coal mining machine body is facilitated.

Description

Automatic turning device of coal mining machine

Technical Field

The utility model relates to the technical field of coal mining machines, in particular to an automatic U-turn device of a coal mining machine.

Background

The coal mining machine is one of important devices for realizing mechanization and modernization of coal mine production. The mechanized coal mining can reduce the physical labor, improve the safety and achieve the purposes of high yield, high efficiency and low consumption. The coal mining machine is divided into a sawing type, a planing type, a drilling type and a milling type, the coal mining machine is a large-scale complex system integrating machinery, electricity and hydraulic pressure, the working environment is severe, and if a fault occurs, the whole coal mining work is interrupted, so that huge economic loss is caused.

At present, when a coal mining machine works, mining treatment needs to be carried out in multiple directions, but when adjustment is carried out in multiple directions, namely turning is carried out, the rotation performance is not good, and therefore, an automatic turning device of the coal mining machine needs to be designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an automatic U-turn device of a coal mining machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic turning device of coal-winning machine, includes the coal-winning organism, the equal fixedly connected with elevating system in bottom four corners of coal-winning organism, and the equal fixedly connected with arc slide of elevating system's bottom one end, the support ring has been cup jointed to the outer wall of arc slide, the circumference inner wall bottom fixedly connected with cross of support ring, and the intermediate position of cross opens there is the circular port, and the bottom intermediate position fixedly connected with of coal-winning organism passes the long gear of circular port, all is provided with rotary mechanism between the outer wall of long gear and the top both ends of cross, the bottom four corners of coal-winning organism all is provided with the walking wheel.

Preferably, the lifting mechanism comprises hydraulic cylinders fixedly connected to four corners of the inner wall of the bottom of the coal mining machine body, the piston ends of two adjacent hydraulic cylinders are fixedly connected with convex-shaped plates, and one end of the bottom of each convex-shaped plate is fixedly connected with the top of the arc-shaped sliding seat.

Preferably, the top of the support ring is provided with an annular groove, the arc-shaped sliding seats are all inserted in the annular groove, and the cross sections of the arc-shaped sliding seats and the annular groove are both in an inverted T shape.

Preferably, the rotating mechanism comprises a forward and reverse rotating motor fixedly connected to two sides of the cross close to the top of the middle position, a threaded rod is fixedly connected to an output shaft of the forward and reverse rotating motor, an L-shaped push plate is connected to the outer wall of the threaded rod in a threaded mode, tooth grooves distributed equidistantly are formed in one side of the L-shaped push plate, and the inner wall of each tooth groove is meshed with the outer wall of the long gear.

Preferably, both ends of the top of the cross are provided with guide grooves, and one end of the bottom of the L-shaped push plate is fixedly connected with a guide block inserted in the guide grooves.

Preferably, the middle position of the bottom of the arc-shaped sliding seat is provided with spherical grooves distributed at equal intervals, and the inner walls of the spherical grooves are connected with sliding balls in a sliding manner.

The utility model has the beneficial effects that:

1. through the lifting mechanism, the arc-shaped sliding seat, the support ring and the cross arranged at the bottom of the coal mining machine body, when the coal mining machine body is turned, pre-lifting operation needs to be carried out on the coal mining machine body, namely four hydraulic cylinders in the lifting mechanism are connected to a hydraulic system in the coal mining machine body, and the heights of the convex-shaped plate, the arc-shaped sliding seat and the support ring are adjusted through the four hydraulic cylinders, so that the support ring and the cross are gradually attached to the ground and jack up the whole coal mining machine body, and lifting preparation work before turning is facilitated.

2. When the coal mining machine body is lifted, the long gear can slide upwards in the two tooth grooves all the time and is in a meshed state all the time through the long gear and the rotating mechanisms arranged at the bottom of the coal mining machine body, the threaded rod is driven to rotate through forward and reverse rotating motors in the two rotating mechanisms, the positions of the L-shaped push plates on the threaded rod are adjusted respectively, the long gear, the coal mining machine body and the lifting mechanism are driven to rotate by the meshed effect of the tooth grooves and the long gear, the position of a scraper bucket of the coal mining machine body is changed, and the whole coal mining machine body can conduct automatic turning operation conveniently.

Drawings

Fig. 1 is a schematic overall structural diagram of an automatic U-turn device of a coal mining machine according to embodiment 1;

fig. 2 is a schematic cross-sectional structural view of an automatic U-turn device of a coal mining machine according to embodiment 1;

fig. 3 is a schematic structural view of an elevating mechanism and a rotating mechanism of an automatic U-turn device of a coal mining machine provided in embodiment 1;

fig. 4 is a schematic structural diagram of a circular hole and a tooth socket of the automatic U-turn device of the coal mining machine provided by the embodiment 1;

fig. 5 is a schematic structural diagram of a spherical groove and a sliding ball of the automatic U-turn device of the coal mining machine in embodiment 2.

In the figure: 1. a coal mining machine body; 2. a traveling wheel; 3. a lifting mechanism; 4. a support ring; 5. a cross; 6. an annular groove; 7. a hydraulic cylinder; 8. a long gear; 9. a raised template; 10. an L-shaped push plate; 11. an arc-shaped sliding seat; 12. a forward and reverse rotation motor; 13. a circular hole; 14. a guide groove; 15. a tooth socket; 16. a threaded rod; 17. a spherical groove; 18. a sliding ball.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-4, an automatic turning device of a coal mining machine comprises a coal mining machine body 1, four corners of the bottom of the coal mining machine body 1 are connected with lifting mechanisms 3 through bolts, one end of the bottom of each lifting mechanism 3 is connected with an arc-shaped sliding seat 11 through bolts, the outer wall of each arc-shaped sliding seat 11 is sleeved with a support ring 4, the bottom of the inner circumferential wall of each support ring 4 is connected with a cross 5 through bolts, a circular hole 13 is formed in the middle position of each cross 5, a long gear 8 penetrating through the circular hole 13 is connected to the middle position of the bottom of the coal mining machine body 1 through bolts, rotating mechanisms are arranged between the outer wall of each long gear 8 and two ends of the top of each cross 5, and four corners of the bottom of the coal mining machine body 1 are provided with walking wheels 2.

Further, elevating system 3 includes the pneumatic cylinder 7 at coal mining organism 1 bottom inner wall four corners through bolted connection, and the piston end of two adjacent pneumatic cylinders 7 all has type of calligraphy template 9 through bolted connection, and bolted connection is passed through with the top of arc slide 11 to type of calligraphy template 9's bottom one end.

Furthermore, the top of the support ring 4 is provided with an annular groove 6, the arc-shaped sliding seats 11 are all inserted into the annular groove 6, and the cross sections of the arc-shaped sliding seats 11 and the annular groove 6 are both in an inverted T shape.

Further, the rotating mechanism comprises a forward and reverse rotating motor 12 which is connected to two sides of the top of the cross 5 close to the middle position through bolts, output shafts of the forward and reverse rotating motor 12 are connected with a threaded rod 16 through bolts, the outer wall of the threaded rod 16 is connected with an L-shaped push plate 10 in a threaded mode, tooth grooves 15 distributed at equal intervals are formed in one side of the L-shaped push plate 10, and the inner wall of each tooth groove 15 is meshed with the outer wall of the long gear 8.

Furthermore, guide grooves 14 are formed in two ends of the top of the cross 5, and guide blocks inserted in the guide grooves 14 are welded at one end of the bottom of the L-shaped push plate 10.

The working principle is as follows: when the coal mining machine body 1 is turned, a user needs to perform pre-lifting operation on the coal mining machine body 1, namely four hydraulic cylinders 7 in the lifting mechanism 3 are connected to a hydraulic system in the coal mining machine body 1, and the heights of the convex-character-shaped plate 9, the arc-shaped slide 11 and the support ring 4 are adjusted through the four hydraulic cylinders 7, so that the support ring 4 and the cross 5 are gradually attached to the ground and the whole coal mining machine body 1 is jacked up, and lifting preparation work before turning is facilitated; when the coal mining machine body 1 is lifted, the long gear 8 can always slide upwards in the two tooth grooves 15 and is always in a meshed state, the positive and negative rotating motors 12 in the two rotating mechanisms drive the threaded rod 16 to rotate, the positions of the L-shaped push plates 10 on the threaded rod 16 are respectively adjusted, the long gear 8, the coal mining machine body 1 and the lifting mechanism 3 are driven to rotate by the meshing action of the tooth grooves 15 and the long gear 8, the position of a scraper bucket of the coal mining machine body 1 is changed, and the whole coal mining machine body 1 can be automatically turned conveniently.

Example 2

Referring to fig. 5, compared with embodiment 1, in this embodiment of an automatic turning device for a coal mining machine, spherical grooves 17 are formed in middle positions of bottoms of arc-shaped sliding bases 11 at equal intervals, and sliding balls 18 are slidably connected to inner walls of the spherical grooves 17.

The working principle is as follows: when the whole coal mining machine body 1 and the lifting mechanism 3 are operated in a rotating mode, the arc-shaped sliding seat 11 can slide in the annular groove 6, and the friction force of the arc-shaped sliding seat 11 in the annular groove 6 is reduced through the sliding performance of the sliding ball 18, so that the operation is smoother.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (6)

1. The utility model provides an automatic turning device of coal-winning machine, includes coal mining organism (1), its characterized in that, the equal fixedly connected with elevating system (3) in bottom four corners of coal mining organism (1), and the equal fixedly connected with arc slide (11) of bottom one end of elevating system (3), support ring (4) have been cup jointed to the outer wall of arc slide (11), circumference inner wall bottom fixedly connected with cross (5) of support ring (4), and the intermediate position of cross (5) is opened circular port (13), and the bottom intermediate position fixedly connected with of coal mining organism (1) passes long gear (8) of circular port (13), all is provided with rotary mechanism between the outer wall of long gear (8) and the top both ends of cross (5), the bottom four corners of coal mining organism (1) all is provided with walking wheel (2).

2. The automatic U-turn device of the coal mining machine according to claim 1, characterized in that the lifting mechanism comprises hydraulic cylinders (7) fixedly connected to four corners of the inner wall of the bottom of the coal mining machine body (1), the piston ends of two adjacent hydraulic cylinders (7) are fixedly connected with a convex-shaped plate (9), and one end of the bottom of the convex-shaped plate (9) is fixedly connected with the top of the arc-shaped sliding seat (11).

3. The automatic U-turn device of the coal mining machine according to claim 2, characterized in that the top of the support ring (4) is provided with an annular groove (6), the arc-shaped sliding seats (11) are all inserted inside the annular groove (6), and the cross sections of the arc-shaped sliding seats (11) and the annular groove (6) are both in an inverted T shape.

4. The automatic turn-around device of the coal mining machine according to claim 3, characterized in that the rotating mechanism comprises a forward and reverse rotating motor (12) fixedly connected to two sides of the cross (5) near the top of the middle position, a threaded rod (16) is fixedly connected to an output shaft of the forward and reverse rotating motor (12), an L-shaped push plate (10) is in threaded connection with the outer wall of the threaded rod (16), tooth grooves (15) distributed at equal intervals are formed in one side of the L-shaped push plate (10), and the inner wall of each tooth groove (15) is meshed with the outer wall of the long gear (8).

5. The automatic U-turn device of the coal mining machine according to claim 4, characterized in that both ends of the top of the cross (5) are provided with guide grooves (14), and one end of the bottom of the L-shaped push plate (10) is fixedly connected with a guide block inserted in the guide grooves (14).

6. The automatic U-turn device of the coal mining machine according to claim 3, characterized in that the arc-shaped sliding base (11) is provided with spherical grooves (17) distributed at equal intervals at the middle position of the bottom, and the inner walls of the spherical grooves (17) are connected with sliding balls (18) in a sliding manner.

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