CN108035758B - A crawler hydraulic support - Google Patents

Abstract

A crawler type hydraulic support, which is composed of a base, an electronically controlled hydraulic box, a hydraulic support, a hydraulic cylinder, a top beam, a coal plow plate and a crawler traveling mechanism; the crawler shoe of the crawler traveling mechanism consists of a main track shoe and two auxiliary track shoes Composition, the planes of the two auxiliary track shoes are inclined outward relative to the plane of the main track shoes, and the driving sprockets of the main track shoes and the two auxiliary track shoes are integrated into one body, driven by the same hydraulic motor to run synchronously. Due to the addition of two auxiliary track shoes that are not on the same plane as the main track shoes, the hydraulic support can effectively avoid the phenomenon that the track shoes are suspended in the air and in line contact with the bottom plate when used on the undulating floor, ensuring sufficient The driving force solves the problem of support instability and support damage caused by unbalanced loads in the existing crawler hydraulic support on the undulating floor; it can ensure sufficient driving force when used on the weak floor. It is able to walk and escape from the submerged floor.

Description

A crawler hydraulic support

technical field

The invention relates to coal mining machinery, in particular to a crawler-tracked hydraulic support suitable for uneven roof and bottom plates of roadways or weak bottom plates.

Background technique

As the key equipment of the fully mechanized mining face, the hydraulic support is required to be able to support and move. As a kind of hydraulic support, the crawler hydraulic support generally consists of a base, an electric control hydraulic tank and a hydraulic support installed on the upper part of the base, a hydraulic cylinder, a top beam controlled by the hydraulic cylinder, a coal plow installed on the front of the base and a hydraulic support. It is composed of two crawler running gears respectively installed on both sides of the lower part of the base, and the crawler shoes in the crawler running gear are all single-plane crawler shoes.

When the underground coal mining face is caused by mining machinery such as coal mining machines or roadheaders, or the floor is undulating due to the deformation and damage of the surrounding rock of the roadway, or the floor is weak and broken rock mass, use this method. The hydraulic support with a single plane track shoe will affect the load mode applied by the top and bottom plates to the support due to the fluctuations of the contact surface between the top and bottom plates and the support to varying degrees, resulting in damage to the support, or due to the contact area between the top and bottom plates and the support If the hydraulic support is less stable, it will affect its support function; when the bottom plate is weak and broken rock mass, the single-plane track shoe will easily sink into the weak bottom plate, resulting in insufficient driving force of the support, making it difficult to walk and escape.

Contents of the invention

Aiming at the above-mentioned technical problems of the existing crawler-type hydraulic support when the floor is undulating and the floor is weak, the purpose of the present invention is to improve it and provide a crawler-type hydraulic support that can adapt to the unevenness of the floor or the weakness of the floor. Hydraulic support.

The crawler type hydraulic support provided by the present invention includes a base; an electric control hydraulic tank and a hydraulic support installed on the upper part of the base; a hydraulic cylinder supported by the hydraulic support; a top beam controlled by the hydraulic cylinder; Plate and two crawler traveling mechanisms installed on both sides of the lower part of the base (wherein the base, electric control hydraulic box, hydraulic support, hydraulic cylinder, top beam and plowing coal plate are basically the same structure as the existing crawler hydraulic support);

The track shoes of the crawler running mechanism are composed of a main track shoe and two auxiliary track shoes symmetrically installed on both sides of the main track shoe through a track shoe support frame; the planes of the two auxiliary track shoes are outward relative to the plane of the main track shoe Inclined at 40°—60°; the main track shoe drive sprocket and two auxiliary track shoe drive sprockets are integrated through the interconnected main track shoe drive sprocket box and the auxiliary track shoe drive sprocket box, and are connected with the One end of the drive sprocket box of one of the auxiliary track shoes is fixedly connected to the hydraulic motor, and is driven by the same hydraulic motor to run synchronously; the inner sides of the two auxiliary track shoes are respectively provided with inclined slopes to make the auxiliary track shoes tilt outward. The support pad, the inclined support pad is connected with the auxiliary track shoe rail chain on the inner side, and the auxiliary track shoe rail chains on both sides are hinged by multiple sets of rail chain pins; the lower side of the main track shoe support frame and the auxiliary track shoe support frame The lower side is respectively hinged with multiple groups of main track rollers and auxiliary track rollers arranged longitudinally; the rear end of the main track shoe support frame has the main track shoe guide wheel, and the rear end of the auxiliary track shoe support frame has the auxiliary track shoe guide wheel .

Compared with the existing crawler-type hydraulic support, the advantages of the present invention are that the crawler-type hydraulic support is:

The track shoe of the crawler running mechanism of the present invention is composed of a main track shoe and two auxiliary track shoes symmetrically installed on both sides of the main track shoe, and the main track shoe and the two auxiliary track shoes are not on the same plane, which not only makes the roadway floor and the hydraulic The contact area of the support is increased, and more importantly, the hydraulic support can be adapted to be used on undulating and weak base plates. When the hydraulic support encounters the undulating floor, at least one of the main track shoe and the two auxiliary track shoes will meet the concave floor, and there will be no track shoe hanging in the air like the existing track walking hydraulic support Or the phenomenon that the track shoes and the bottom plate are in line contact can effectively avoid the instability of the hydraulic support support and the occurrence of support damage caused by unbalanced loads. When the hydraulic support encounters a weak floor, both the main track shoe and the two auxiliary track shoes can be in contact with the floor, thus effectively ensuring that the contact area and driving force between the hydraulic support and the floor are large enough to enable it to walk and recover from the sunken weak floor escape.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the schematic diagram of crawler belt traveling mechanism in Fig. 1;

Fig. 3 is a schematic diagram of a partial three-dimensional structure of the auxiliary crawler and its connecting parts in the crawler running mechanism of Fig. 2;

Fig. 4 is a schematic structural view of the driving sprocket in the crawler running mechanism of Fig. 2;

Fig. 5 is a schematic diagram of the hydraulic support of the present invention for different working conditions.

Explanation of reference numerals and symbols: 1-track traveling mechanism, 2-base, 3-hydraulic support, 4-electrically controlled hydraulic box, 5-coal plow plate, 6-hydraulic cylinder, 7-top beam, 11-main track shoe, 12-auxiliary track shoe, 13-main track shoe support frame, 14-auxiliary track shoe support frame, 15-main track shoe drive sprocket, 16-auxiliary track shoe drive sprocket, 17-main track shoe drive sprocket box , 18-auxiliary track shoe drive sprocket box, 19-main track shoe roller, 110-auxiliary track shoe roller, 111-main track shoe guide wheel, 112-auxiliary track shoe guide wheel, 113-auxiliary Track shoe rail chain, 114-(auxiliary track shoe) inclined support pad, 115-(auxiliary track shoe) rail chain pin, 116-(drive sprocket and hydraulic motor) connecting flange.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

As shown in Figure 1, the crawler type hydraulic support in this embodiment includes a base 2; an electric control hydraulic tank 4 and a hydraulic support 3 are installed on the upper part of the base, and the hydraulic support supports a hydraulic cylinder 6; the upper part of the hydraulic support is controlled by a hydraulic cylinder. The top beam 7; the front part of the base is equipped with a coal plow plate 5; two crawler belt traveling mechanisms 1 are installed on both sides of the bottom of the base; Some crawler type hydraulic supports have basically the same structure.

As shown in Figure 2, the track shoes of the two crawler running gears are symmetrically installed on the main track shoes by the main track shoe 11 and through the track shoe support frame (including the following main track shoe support frame 13 and auxiliary track shoe support frame 14). It consists of two auxiliary track shoes 12 on both sides of the plate.

As shown in FIG. 3 , the planes of the two auxiliary track shoes are inclined 40° outward relative to the plane of the main track shoes.

As shown in Figure 4, the main track shoe drive sprocket 15 and the two auxiliary track shoe drive sprockets 16 are integrated into one body through the interconnected main track shoe drive sprocket case 17 and auxiliary track shoe drive sprocket case 18, And connect with the hydraulic motor (not shown) through the connection flange 116 fixedly connected with one end of one of the auxiliary crawler shoe driving sprocket casings, driven by the same hydraulic motor to run synchronously.

As shown in Figure 3, the inner sides of the two auxiliary track shoes are respectively equipped with oblique support pads 114 to make the auxiliary track shoes tilt outward. The track chain is hinged by multiple groups of track chain pins 115.

As shown in Figure 2, the underside of the main track shoe support frame 13 and the underside of the auxiliary track shoe support frame 14 are respectively hinged with multiple groups of longitudinally arranged main track shoe rollers 19 and auxiliary track shoe rollers 110; The main track shoe guide wheel 111 is arranged at the rear end of the plate support frame, and the auxiliary track shoe guide wheel 112 is arranged at the rear end of the auxiliary track shoe support frame.

As shown in Figure 5, when the crawler running mechanism on the left side of the hydraulic support of the present invention encounters working condition A, the crawler running mechanism sinks into the weak bottom plate. Since the contact area between the track shoe and the bottom plate is large enough, the driving of the support can be ensured. The force is large enough to allow it to walk and escape from the sunken floor; when the crawler running mechanism on the right meets B, the bracket tilts to the left, because the plane of the main track shoe and the planes of the two auxiliary track shoes are not on the same plane, It can ensure that there will be no suspension or line contact when the crawler travel mechanism contacts the protruding bottom plate, and it can also ensure that the driving force is sufficiently large; At the same time, the inclined auxiliary track shoes on the inside of the two crawler running gears are respectively in contact with the bottom plate of the recessed part, which can also prevent the crawler running gear from being suspended in the air or be in line contact with the bottom plate, so as to ensure that the driving force of the support is large enough.

The crawler walking type hydraulic support of the present invention solves the problem of difficult walking of the support caused by the uneven or weak floor of the existing roadway through the improvement of the crawler walking mechanism, and improves the working efficiency of the support.

Claims (1)

1. A crawler walking type hydraulic support comprises a base (2); an electric control hydraulic tank (4) and a hydraulic support (3) which are arranged on the upper part of the base; a hydraulic cylinder (6) supported by the hydraulic support; a top beam (7) controlled by a hydraulic cylinder; a coal plough plate (5) arranged at the front part of the base and two crawler belt traveling mechanisms (1) arranged at the two sides of the lower part of the base; the method is characterized in that:

the crawler belt plate of the crawler belt walking mechanism (1) consists of a main crawler belt plate (11) and two auxiliary crawler belt plates (12) which are symmetrically arranged on two sides of the main crawler belt plate through crawler belt plate supporting frames (13, 14); the plane of the two auxiliary shoes is inclined outwardly by 40 to 60 relative to the plane of the main shoe; the main track shoe driving chain wheel (15) and the two auxiliary track shoe driving chain wheels (16) are connected into a whole through a main track shoe driving chain wheel box body (17) and an auxiliary track shoe driving chain wheel box body (18) which are mutually connected, and are connected with a hydraulic motor through a connecting flange (116) fixedly connected with one end of one auxiliary track shoe driving chain wheel box body, and are driven by the same hydraulic motor to synchronously run; the inner sides of the two auxiliary track shoes are respectively provided with an inclined supporting cushion block (114) which enables the auxiliary track shoes to incline outwards, the inclined supporting cushion blocks are connected with auxiliary track shoe rail chains (113) on the inner sides, and the auxiliary track shoe rail chains on the two sides are hinged through a plurality of groups of rail chain pin shafts (115); the lower side of the main track shoe support frame (13) and the lower side of the auxiliary track shoe support frame (14) are respectively hinged with a plurality of groups of main track shoe thrust wheels (19) and auxiliary track shoe thrust wheels (110) which are longitudinally arranged; the rear end of the main creeper tread support frame is provided with a main creeper tread guide wheel (111), and the rear end of the auxiliary creeper tread support frame is provided with an auxiliary creeper tread guide wheel (112).