阅读说明：本技术 一种操车用电动转盘 (Electric turntable for operating vehicle ) 是由 王志民 沈荣骥 沈荣澍 李长友 于 2020-07-06 设计创作，主要内容包括：一种操车用电动转盘,它包括转盘组件、第一驱动装置、内导轨平台、外导轨平台及第二驱动装置；转盘组件包括环形盘体、筒体和定心承载组件；环形盘体的下表面固装有筒体且二者同轴设置,承载于环形盘体上表面的矿车的纵向中心线的回转圆直径小于或等于筒体的内径,筒体的下端面固装有定心承载组件,定心承载组件设置在现有的地基上,筒体由第一驱动装置提供动力而能相对地基旋转；在盘体的内外两侧分别设置有固定于地基上的内导轨平台和外导轨平台,在内导轨平台和外导轨平台上分别设置有能使随盘体回转的矿车进入出车平台的第二驱动装置。本发明电动转盘结构简单,承载矿车能运行平稳,能使矿车进入和自动离开出车平台。(An electric turntable for vehicle operation comprises a turntable assembly, a first driving device, an inner guide rail platform, an outer guide rail platform and a second driving device; the turntable assembly comprises an annular disc body, a cylinder body and a centering bearing assembly; the lower surface of the annular disc body is fixedly provided with a cylinder body which is coaxially arranged, the diameter of a rotation circle of a longitudinal central line of the mine car loaded on the upper surface of the annular disc body is smaller than or equal to the inner diameter of the cylinder body, the lower end surface of the cylinder body is fixedly provided with a centering bearing assembly, the centering bearing assembly is arranged on the existing foundation, and the cylinder body can rotate relative to the foundation by the power provided by a first driving device; the inner side and the outer side of the tray body are respectively provided with an inner guide rail platform and an outer guide rail platform which are fixed on a foundation, and the inner guide rail platform and the outer guide rail platform are respectively provided with a second driving device which can enable a mine car rotating along with the tray body to enter the unloading platform. The electric turntable has a simple structure, can stably run by bearing a mine car, and can enable the mine car to enter and automatically leave the car discharging platform.)

1. An electric turntable for vehicle operation is characterized in that: comprises a turntable assembly (1), a first driving device (6), an inner guide rail platform (4), an outer guide rail platform (5) and a second driving device (9);

the turntable assembly (1) comprises an annular disc body (1-1), a cylinder body (1-2) and a centering bearing assembly (1-3);

the lower surface of the annular disc body (1-1) is fixedly provided with a cylinder body (1-2) which are coaxially arranged, the diameter of a rotation circle of a longitudinal central line of a mine car (7) borne on the upper surface of the annular disc body (1-1) is smaller than or equal to the inner diameter of the cylinder body (1-2), the lower end surface of the cylinder body (1-2) is fixedly provided with a centering bearing component (1-3), the centering bearing component (1-3) is arranged on the existing foundation (8), and the cylinder body (1-2) can rotate relative to the foundation (8) by being powered by a first driving device (6);

an inner guide rail platform (4) and an outer guide rail platform (5) which are fixed on a foundation (8) are respectively arranged on the inner side and the outer side of the tray body (1-1), and second driving devices (9) which can enable mine cars rotating along with the tray body (1-1) to enter the unloading platform (3) are respectively arranged on the inner guide rail platform (4) and the outer guide rail platform (5) and are close to the position of the existing unloading platform (3).

2. An electric steering wheel according to claim 1, characterized in that: the centering bearing assembly (1-3) comprises an upper annular disc (1-3-1), a lower annular disc (1-3-2) and a steel ball (1-3-3);

the upper surface of the upper annular disc (1-3-1) is fixed on the lower end surface of the cylinder (1-1);

the lower surface of the upper annular disc (1-3-1) is provided with a plurality of upper semicircular grooves along the circumferential direction;

the upper surface of the lower annular disc (1-3-2) is provided with a plurality of lower semicircular grooves corresponding to the upper semicircular groove along the circumferential direction, the upper semicircular groove and the lower semicircular groove are butted to form spherical holes, the rotation centers of the spherical holes are superposed with the rotation center of the cylinder body (1-2), steel balls (1-3-3) are contained in the spherical holes, and the lower surface of the lower annular disc (1-3-2) is fixed on a foundation (8).

3. An electric steering wheel according to claim 2, characterized in that: the outer diameter of the upper annular disc (1-3-1) is larger than that of the lower annular disc (1-3-2), and the upper surface and the lower surface of the upper annular disc (1-3-1) are driving action surfaces of the first driving device (6).

4. An electric steering wheel according to claim 3, characterized in that: the first driving device (6) comprises a vertical frame (6-10), a spring mechanism and two sets of first friction driving mechanisms;

a set of first friction driving mechanisms are respectively arranged on the upper surface and the lower surface of the outer edge of the upper annular disc (1-3-2), a vertical frame (6-10) is installed on a foundation (8), and a spring mechanism and two sets of disc friction driving mechanisms are arranged on two sides of the vertical frame (6-10);

the spring mechanism comprises a pressing flange (6-6) and a compression spring (6-8), and each set of first friction driving mechanism comprises a first friction driving wheel (6-1), a first speed reducer (6-2), a first motor (6-3) and a first frame (6-4); the two first friction driving wheels (6-1) are opposite in rotation direction and are axially and horizontally arranged, the two first friction driving wheels (6-1) are respectively in friction contact with the upper surface and the lower surface of the upper annular disc (1-3-1), the first friction driving wheels (6-1) are arranged at the output end of the first speed reducer (6-2), the first speed reducer (6-2) is arranged on the first frame (6-4), the two first frames (6-4) are both hinged with the vertical frame (6-10), the input end of the first speed reducer (6-2) is arranged at the output end of the first motor (6-3), the compression spring (6-8) is arranged between the two first frames (6-4), the compression flange (6-6) is arranged on the first frame (6-4) positioned at the upper part through a bolt, one end of the compression spring (6-8) is propped against the pressing flange (6-6), and the other end is propped against the first machine frame (6-4) positioned at the lower part.

5. An electric steering wheel according to claim 1, 2, 3 or 4, characterized in that: the second driving device (9) comprises a second friction driving wheel (9-1), a second speed reducer (9-2), a second motor (9-3), a second frame (9-4) and an upright post (9-5);

the two second friction driving wheels (9-1) are arranged vertically in opposite rotating directions and in the axial direction, the two second friction driving wheels (9-1) are respectively in friction contact with the surface of a compartment of the mine car (7), the second friction driving wheel (9-1) on each second driving device (9) is arranged at the output end of a second speed reducer (9-2), the second speed reducer (9-2) is arranged on a second frame (9-4), the input end of the second speed reducer (9-2) is arranged at the output end of a second motor (9-3), the second frame (9-4) is hinged with the upright post (9-5), the two upright posts (9-5) are respectively arranged on the inner guide rail platform (4) and the outer guide rail platform (5), and the distance between the second frame (9-4) and the central line of the mine car (7) is smaller than the distance between the upright post (9-5) and the central line of the mine car (7).

6. An electric steering wheel according to claim 5, wherein: the electric turntable for vehicle operation further comprises two sets of thrust adjusting mechanisms, and the two first driving devices (9) are respectively provided with one set of thrust adjusting mechanism (9-7); each set of the thrust adjusting mechanism comprises a plate-shaped upright post (9-7-1), an adjusting nut (9-7-2), an adjusting bolt (9-7-3), a spring (9-7-4) and a connecting flange (9-7-5);

two plate-shaped upright posts (9-7-1) are respectively arranged on the inner guide rail platform (4) and the outer guide rail platform (5), each plate-shaped upright post (9-7-1) is provided with an installation hole, one side of an adjusting nut (9-7-2) is rotatably arranged in the installation hole, the adjusting nut (9-7-2) is in threaded connection with an adjusting bolt (9-7-3), one end of the adjusting bolt (9-7-3) is fixedly connected with a connecting flange (9-7-5), and a spring (9-7-4) is arranged between the connecting flange (9-7-5) and the second machine frame (9-4).

7. An electric steering wheel according to claim 6, wherein: the adjusting nut (9-7-2) is a stepped nut, a small cylinder on one side of the adjusting nut (9-7-2) is rotatably arranged in the mounting hole, the small cylinder on one side of the adjusting nut (9-7-2) is connected with the baffle (9-7-6), and the adjusting nut (9-7-2) is axially limited by the baffle (9-7-6) and the platy upright post (9-7-1).

8. An electric steering wheel according to claim 7, wherein: two ends of the spring (9-7-4) are respectively arranged on the pressure plates (9-7-7), and the two pressure plates (9-7-7) are respectively connected with the connecting flange (9-7-5) and the second frame (9-4) through bolts.

9. An electric steering wheel according to claim 1 or 8, characterized in that: an inspection hole is formed in the middle of the inner guide rail platform 4, and the cover plate 10 covers the inspection hole.

Technical Field

The invention relates to an electric turntable, in particular to an electric turntable for operating a vehicle, which is operated by a mine auxiliary vertical shaft mine car, and belongs to the field of mining mechanical devices.

Background

The traditional mine auxiliary vertical shaft mine car circulation parking lot mainly comprises: shuttle car yards, ring gallery yards, transverse trolley yards. Electric turntable yards began to appear in the last 80 years of the world, and the three yards are gradually eliminated. The present electric turntable for operating car in auxiliary vertical shaft of mine consists of mainly centering mechanism, support mechanism and driving mechanism. The devices are respectively arranged, the structure is complex, and the mechanical manufacturing amount is large;

in the operation process, when the mine car rotates to the inlet of the unloading platform along with the electric turntable, because a height difference exists between the turntable disc surface and the unloading platform, the running resistance of the mine car is different, so that a part of mine cars cannot enter the unloading platform from the turntable disc surface only by the friction force and the motion inertia between the mine car wheel pair and the turntable disc surface, are retained in the unloading platform, and can leave the electric turntable disc surface to enter the unloading platform by manual assistance.

In summary, the following steps: 1. the existing mine car which is in a part with complicated structure, 2 percent and operation by using the electric turntable can not be separated from the electric turntable and is retained on the surface of the electric turntable and needs manual assistance for pushing. Because of electric turntable goes out car platform department narrowly, when the manual work pushed away the mine car, because follow-up mine car that comes and is detained the collision impact between the mine car, cause the injury to the shallow person easily.

Disclosure of Invention

The invention provides an electric turntable for operating a vehicle, aiming at overcoming the defects of the prior art. The electric turntable is simple in structure, can stably run by bearing a mine car, and enables the mine car to enter and leave the car outlet platform by itself.

The technical scheme of the invention is as follows:

an electric turntable for vehicle operation comprises a turntable assembly, a first driving device, an inner guide rail platform, an outer guide rail platform and a second driving device; the turntable assembly comprises an annular disc body, a cylinder body and a centering bearing assembly;

the lower surface of the annular disc body is fixedly provided with a cylinder body which is coaxially arranged, the diameter of a rotation circle of a longitudinal central line of the mine car loaded on the upper surface of the annular disc body is smaller than or equal to the inner diameter of the cylinder body, the lower end surface of the cylinder body is fixedly provided with a centering bearing assembly, the centering bearing assembly is arranged on the existing foundation, and the cylinder body can rotate relative to the foundation by the power provided by a first driving device;

the inner side and the outer side of the tray body are respectively provided with an inner guide rail platform and an outer guide rail platform which are fixed on the foundation, the position of the inner guide rail platform and the position of the outer guide rail platform which are adjacent to the existing unloading platform are respectively provided with a second driving device which can enable the mine car rotating along with the tray body to enter the unloading platform.

Compared with the prior art, the invention has the beneficial effects that:

the centering bearing assembly is designed to bear the dead weight and the working load of the disc body, the turntable assembly realizes centering rotation, the diameter of the cylinder body is equal to or larger than the diameter of a rotation circle of the mine car, and the electric turntable is guaranteed to run stably when the mine car is loaded. The first driving device and the second driving device are designed and are respectively used for driving the disc body and driving the mine car, and the problem that the mine car cannot enter the car discharging platform from the disc body of the electric turntable and leaves from the car discharging platform, and part of the mine cars need to be pushed by manual assistance is solved.

The electric turntable provided by the invention integrates centering, bearing and driving, and has the advantages of simple structure, less manufacturing amount and low energy consumption.

The invention will be further described with reference to the accompanying drawings and embodiments:

drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic layout of the entry, exit, inner and outer track platforms;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 5 is a sectional view taken along line C-C of fig. 1.

Detailed Description

In the prior art, the mine car 7 enters the car entering platform 2 at the inertial speed, the car entering platform 2 is connected with the fixed track and the disc surface of the electric turntable, and enters the disc surface of the electric turntable from the car entering platform 2, and the disc surface of the electric turntable is lower than the car entering platform and has a height difference, so that the mine car smoothly enters the disc surface of the electric turntable at the inertial speed without detention. Under the state of being static relative to the plate surface, the mine car 7 synchronously rotates to the car-out platform 3 along with the plate surface of the electric turntable.

Go out car platform 3 and link up electric turntable quotation and trapped orbit, mine car 7 is along with electric turntable's quotation gyration, when 7 front portion wheel pairs of mine cars contact out car platform 3, there is one (upwards) difference in height between electric turntable's quotation and the platform 3 of going out, most mine cars lean on inertia and the wheel pair and the frictional force between the quotation of carousel can get into out car platform 3, and leave from going out car platform 3, it is different because of mine car running resistance, some mine cars can not get into out car platform 3, be detained here, need lean on the external force to promote the direction and can get into out the car platform, and leave from going out car platform 3.

To this end, the present embodiment provides an electric turntable for vehicle operation, which includes a turntable assembly 1, a first driving device 6, an inner guide rail platform 4, an outer guide rail platform 5, and a second driving device 9, as shown in fig. 1 to 2;

the turntable assembly 1 comprises an annular disc body 1-1, a cylinder body 1-2 and a centering bearing assembly 1-3; the lower surface of the annular disc body 1-1 is fixedly provided with a cylinder body 1-2 which are coaxially arranged, the diameter of a rotation circle of a longitudinal central line of a mine car 7 borne on the upper surface of the annular disc body 1-1 is smaller than or equal to the inner diameter of the cylinder body 1-2, the lower end surface of the cylinder body 1-2 is fixedly provided with a centering bearing assembly 1-3, the centering bearing assembly 1-3 is arranged on the existing foundation 8, and the cylinder body 1-2 can rotate relative to the foundation 8 by being powered by a first driving device 6; an inner guide rail platform 4 and an outer guide rail platform 5 which are fixed on a foundation 8 are respectively arranged on the inner side and the outer side of the disc body 1-1, and a second driving device 9 which can enable a mine car rotating along with the disc body 1-1 to enter the vehicle outlet platform 3 is respectively arranged on the inner guide rail platform 4 and the outer guide rail platform 5 at the position close to the existing vehicle outlet platform 3. A gap is kept between the lower surface of the vehicle entering platform 2 and the surface of the disk body 1-1. A gap is kept between the lower surface of the vehicle-out platform 3 and the surface of the plate body 1-1.

The beneficial effects of the embodiment are as follows: the centering bearing assembly is designed to bear the dead weight and the working load of the disc body and enable the turntable assembly to realize centering rotation, and the diameter of the cylinder body 1-2 is equal to or larger than the diameter of a rotation circle of the mine car 7, so that the electric turntable can run stably when being loaded with the mine car. The first driving device 6 and the second driving device 9 are designed for driving the disc body 1-1 and the mine car 7 respectively, and the problem that the mine car cannot enter the departure platform 3 from the disc body of the electric turntable and can leave the departure platform 3 by self and needs manual auxiliary pushing is solved.

As an alternative embodiment: the annular disc body 1-1 is a split part, the upper surface of the disc surface bears a mine car, the disc surface is split into two parts, the two parts are connected through a connecting plate and fastened by standard parts to form a whole, the upper end of the cylinder body 1-2 is welded with a flange plate, bolt holes are distributed in the flange plate and correspond to threaded holes in the annular disc body 1-1 and are used for fastening the cylinder body and the annular disc body 1-1, and the head of the bolt cannot protrude out of the upper surface of the annular disc body 1-1 after fastening.

The inner guide rail platform 4 and the outer guide rail platform 5 act together to enable the mine car 7 to rotate together with the electric turntable under the rotation of the disc body 1-1 of the electric turntable, the inner guide rail platform 4 and the outer guide rail platform 5 can be fixed on a foundation 8 through a plurality of supporting columns and bolts, and fixed gaps are kept between the lower surfaces of the inner guide rail platform 4 and the outer guide rail platform 5 and the disc body 1-1.

As shown in fig. 1, optionally, the centering bearing assembly 1-3 comprises an upper annular disc 1-3-1, a lower annular disc 1-3-2 and a steel round ball 1-3-3;

the upper surface of the upper annular disc 1-3-1 is fixed on the lower end surface of the cylinder 1-1;

a plurality of upper semicircular grooves are processed on the lower surface of the upper annular disc 1-3-1 along the circumferential direction;

the upper surface of the lower annular disc 1-3-2 is provided with a plurality of lower semicircular grooves corresponding to the upper semicircular groove along the circumferential direction, the upper semicircular groove and the lower semicircular groove are butted to form a spherical hole, the rotation centers of the plurality of spherical holes are superposed with the rotation center of the cylinder body 1-2, a steel ball 1-3-3 is accommodated in the spherical hole, and the lower surface of the lower annular disc 1-3-2 is fixed on a foundation 8. According to the arrangement, a steel ball 1-3-3 is arranged in a circular cross section groove formed by the upper semicircular groove and the lower semicircular groove, the steel ball 1-3-3, the upper annular disc 1-3-1 and the lower annular disc 1-3-2 jointly form a thrust bearing, and the thrust bearing has the following functions: firstly, the rotation of the turntable assembly is centered; and bearing the self weight of the turntable assembly and the load of the mine car running on the disc surface. The lower annular disc 1-3-2 is distributed with threaded holes, and the lower annular disc 1-3-2 is fixedly connected with a foundation 8 through foundation bolts 12.

For the convenience of driving and the compactness of the structure, as shown in fig. 1, the upper annular disc 1-3-1 extends outward a part more than the lower annular disc 1-3-2, the outer diameter of the upper annular disc 1-3-1 is larger than that of the lower annular disc 1-3-2, and the upper surface and the lower surface of the upper annular disc 1-3-1 are driving acting surfaces of the first driving device 6.

Further, as shown in fig. 1, a first driving device is provided, and the first driving device 6 comprises stands 6-10, a spring mechanism and two sets of first friction driving mechanisms;

a set of first friction driving mechanisms are respectively arranged on the upper surface and the lower surface of the outer edge of the upper annular disc 1-3-1, the vertical frame 6-10 is installed on the foundation 8, and the spring mechanism and the two sets of disc friction driving mechanisms are arranged on two sides of the vertical frame 6-10; as shown in fig. 4, the spring mechanism comprises a pressing flange 6-6 and a compression spring 6-8, and each set of first friction driving mechanism comprises a first friction driving wheel 6-1, a first speed reducer 6-2, a first motor 6-3 and a first frame 6-4; the two first friction driving wheels 6-1 are arranged horizontally in opposite rotating directions and in the axial direction, the two first friction driving wheels 6-1 are respectively in friction contact with the upper surface and the lower surface of the upper annular disc 1-3-1, the first friction driving wheel 6-1 is arranged at the output end of the first speed reducer 6-2, the first speed reducer 6-2 is arranged on the first machine frame 6-4, as shown in figure 3, the two first machine frames 6-4 are both hinged with the vertical frame 6-10, as shown in figure 1, the input end of the first speed reducer 6-2 is arranged at the output end of the first motor 6-3, the compression spring 6-8 is arranged between the two first machine frames 6-4, as shown in figure 4, the compression flange 6-6 is arranged on the first machine frame 6-4 at the upper part through a bolt 6-7, one end of the compression spring 6-8 is propped against the pressing flange 6-6, and the other end is propped against the first machine frame 6-4 positioned at the lower part.

The working process is as follows: as shown in figure 1, the outer peripheral surfaces of two first friction driving wheels 6-1 with opposite rotating directions act on the upper surface and the lower surface of an upper annular disc 1-3-1, the upper annular disc 1-3-1 is rotated by means of friction force, a cylinder 1-2 is driven to rotate, the first friction driving wheel 6-1 is driven to rotate by a first speed reducer 6-2, the first speed reducer 6-2 is driven by a first motor 6-3, two first racks 6-4 and a vertical frame 6-10 are connected together through a pin shaft to form a hinge mechanism together, the vertical frame 6-10 can be fastened on a foundation 8 through foundation bolts 12, and the vertical frame 6-10 can be selected as a vertical column. As shown in figures 3 and 4, the two frames 6-4 can slightly float along with the upper surface and the lower surface of the turntable through the pin shafts 6-5, so that the driving continuity is ensured. The first speed reducer 6-2 and the first motor 6-3 are arranged on one side of the pin shaft 6-5, the compression spring 6-8 is arranged on the other side of the pin shaft 6-5, the compression flange 6-6 compresses the compression spring 6-8 through the bolt 6-7, and the acting force of the compression spring 6-8 is adjusted through the bolt 6-7 to adjust the contact degree of the two first friction driving wheels 6-1 and the upper and lower surfaces of the upper annular disc 1-3-2 so as to meet the requirement of friction driving force.

In order to ensure that all mine cars 7 which rotate to the discharging platform 3 along with the electric turntable enter the discharging platform 3 and are separated from the discharging platform 3, mine car driving devices 9 are respectively arranged on the inner guide rail platform 4 and the outer guide rail platform 5; as shown in fig. 1, the second driving device 9 comprises a second friction driving wheel 9-1, a second speed reducer 9-2, a second motor 9-3, a second frame 9-4 and a vertical column 9-5;

two second friction driving wheels 9-1 are arranged vertically in the axial direction in the opposite rotating direction, the two second friction driving wheels 9-1 are respectively in friction contact with the surface of the compartment of the mine car 7, the second friction driving wheel 9-1 of each second driving device 9 is mounted at the output end of a second speed reducer 9-2, the second speed reducer 9-2 is mounted on a second frame 9-4, the input end of the second speed reducer 9-2 is mounted at the output end of a second motor 9-3, the second frame 9-4 is hinged with an upright post 9-5, the two upright posts 9-5 are respectively mounted on the inner rail platform 4 and the outer rail platform 5, and the distance between the second frame 9-4 and the central line of the mine car 7 is smaller than the distance between the upright post 9-5 and the central line of the mine car 7.

As shown in fig. 1 and fig. 2, the working process is as follows: the peripheral surfaces of two second friction driving wheels 9-1 with opposite rotating directions act on the carriage surface of the mine car 7, and the mine car 7 is driven to enter the departure platform 3 and automatically depart from the departure platform 3 under the guiding action of the wheel pair at the bottom of the mine car 7 by means of friction force. Similarly, the second friction driving wheel 9-1 is driven to rotate by a second speed reducer 9-2 and a second motor 9-3. The second frame 9-4 is designed to be correspondingly hinged with the upright 9-5 through the hinge 9-5-1, and the distance between the second frame 9-4 and the central line of the mine car 7 is smaller than the distance between the upright 9-5 and the central line of the mine car 7, so that: the second frame 9-4 and the upright post 9-5 which form the bilateral symmetry arrangement have an equal offset distance, the second reducer 9-2, the second motor 9-3 and the second frame 9-4 generate thrust to the wall of the mine car 7 through the action of the offset distance, the thrust is equal to the left and the right, and the thrust is the adhesion thrust of the friction driving force.

Optionally, the second frame 9-4 may be an L-shaped bracket, and a short arm of the L-shaped bracket is hinged to the upright 9-5 through a pin. The uprights 9-5 can be fastened to the inner guide rail platform 4 and the outer guide rail platform 5 by means of anchor bolts. The vertical arms of the two L-shaped brackets have an equal offset distance with the two upright posts 9-5 respectively.

In order to adjust the adhesion thrust to meet the requirement of driving the mine car 7, as shown in fig. 1 and 5, a thrust adjusting mechanism is respectively arranged at the outer sides of two second driving devices 9, the electric turntable for operating the car further comprises two sets of thrust adjusting mechanisms 9-7, and two sets of thrust adjusting mechanisms 9-7 are respectively arranged on two first driving devices 9; each set of the thrust adjusting mechanism 9-7 comprises a plate-shaped upright post 9-7-1, an adjusting nut 9-7-2, an adjusting bolt 9-7-3, a spring 9-7-4 and a connecting flange 9-7-5;

two plate-shaped upright posts 9-7-1 are respectively arranged on the inner guide rail platform 4 and the outer guide rail platform 5, each plate-shaped upright post 9-7-1 is provided with an installation hole, one side of an adjusting nut 9-7-2 is rotatably arranged in the installation hole, the adjusting nut 9-7-2 is in threaded connection with an adjusting bolt 9-7-3, one end of the adjusting bolt 9-7-3 is fixedly connected with a connecting flange 9-7-5, and a spring 9-7-4 is arranged between the connecting flange 9-7-5 and the second frame 9-4.

The working process is as follows: when the adjusting nut 9-7 rotates, the adjusting bolt 9-8 screwed with the adjusting nut can do linear motion leftwards or rightwards. The adjusting bolt 9-8 does not rotate, so that the right end or the left end of the adjusting bolt 9-8 pushes the connecting flange 9-7 to move linearly, the adjusting nut 9-7 can adjust the second frame 9-4 to drive the second speed reducer 9-2 to move, and the adhesion driving force of the second friction driving wheel 9-1 of the second driving device 9 to the mine car 7 is changed. The adjusting nuts 9-7 are adjusted properly and then positioned by using the standby cap.

For convenient use, a part of the outer side of the adjusting nut 9-7 is hexagonal. The adhesion pressure of the second driving device 9 to the wall of the mine car 7 can be adjusted by rotating the hexagonal part with a wrench.

Furthermore, the adjusting nut 9-7-2 is a stepped nut, a small cylinder at one side of the adjusting nut 9-7-2 is rotatably arranged in the mounting hole, a small cylinder at one side of the adjusting nut 9-7-2 is connected with the baffle 9-7-6, and the adjusting nut 9-7-2 is axially limited by the baffle 9-7-6 and the platy upright post 9-7-1. With the arrangement, the adjusting nut 9-7-2 can not be axially dislocated and fall off when being rotated. Two ends of the spring 9-7-4 are respectively arranged on the pressure plates 9-7-7, the two pressure plates 9-7-7 are respectively connected with the connecting flange 9-7-5 and the second frame 9-4 through bolts, and the spring 9-7-4 can be a compression spring. An inspection hole is formed in the middle of the inner guide rail platform 4, and the cover plate 10 covers the inspection hole. The inspection holes are used for installation, debugging and maintenance of the turntable assembly 1-1 and the inner guide rail platform 4. The inspection hole is normally covered with a cover plate 10 and fastened with a bolt.

The present invention is not limited to the above embodiments, and those skilled in the art can make various changes and modifications without departing from the scope of the invention.