Connecting support device and bridge transition connection support method for outer guard plate of reduction gearbox

Abstract

The present invention relates to a connecting support device and a method for connecting and supporting a reduction gearbox outer guard plate by bridging the transition. The connecting support device is a plate-shaped structure, with a first set of screw holes provided at the lower edge of the plate surface, a second set of screw holes provided at the edge of the middle and upper portion of the plate surface, and a pin hole provided in the middle of the back plate surface. The connecting support method for connecting and supporting a reduction gearbox outer guard plate by bridging the transition is to install the connecting support device on the outer wall of the coal wall side of the reduction gearbox, and then install the reduction gearbox outer guard plate on the traction part housing and the connecting support device. The edge of the reduction gearbox outer guard plate is directly fixed to the traction part housing, and the middle and lower portion of the reduction gearbox outer guard plate is fixed to the connecting support device. The present invention can solve the problem of reliable installation of the reduction gearbox outer guard plate of a thin coal seam coal mining machine, so that the outer guard plate is supported and prevented from deformation.

Description

Technical Field

[0001] The invention relates to a connecting device and a method for realizing a bridge transition connection and support between two structural members by using the connecting device, and is mainly used for installing an outer guard plate of a reduction box of a thin coal seam coal mining machine. Background Art

[0002] Usually, the outer wall of the coal wall side of the traction part shell of the coal mining machine is a concave structure in the middle, and the coal mining machine reduction box is fixedly installed in the concave part. The outer guard plate of the reduction box located on the coal wall side of the coal mining machine reduction box is generally installed on the edge of the traction part shell and suspended in the middle, that is, the outer guard plate covers the outside of the coal mining machine reduction box and maintains a certain gap between the outer guard plate and the coal mining machine reduction box. This structure generally has little effect on medium and thick coal seam coal mining machines, but for thin coal seam coal mining machines, on the one hand, due to the low height of the machine face, the outer guard plate is easily squeezed and deformed by the coal accumulated on the coal wall side. On the other hand, when the distance between the coal mining machine reduction box and the outer guard plate is large, after the outer guard plate is installed with screws, it is also easy to bend and deform due to lack of support under the action of the tightening force. In either case, the normal use of the outer guard plate will be affected. Summary of the Invention

[0003] The present invention aims to provide a connection support device and a bridge transition connection support method for the outer guard plate of a reduction gearbox, which can solve the problem of reliable installation of the outer guard plate of a reduction gearbox of a thin coal seam coal mining machine, so that the outer guard plate can be supported and prevented from deformation.

[0004] The main technical solutions of the present invention are:

[0005] A connecting support device is a plate-shaped structure with a first set of screw holes at the lower edge of the plate surface, a second set of screw holes at the upper middle edge of the plate surface, and a pin hole at the middle of the back plate surface.

[0006] A notch is provided in the middle of the lower edge of the plate surface of the connecting support device.

[0007] The first group of screw holes is arranged into at least two rows, an upper row and an lower row, wherein the upper row has at least four screw holes and the lower row has at least two screw holes.

[0008] A plurality of top screw holes are also arranged at intervals on the middle and upper edge of the plate surface of the connecting support device.

[0009] A method for connecting and supporting the outer guard plate of a reduction gearbox by bridging the transition, wherein the connecting support device is installed on the outer wall of the coal wall side of the reduction gearbox, and then the outer guard plate of the reduction gearbox is installed on the traction part shell and the connecting support device. The edge of the outer guard plate of the reduction gearbox is directly fitted and fixed on the traction part shell, and the middle and lower parts of the outer guard plate of the reduction gearbox are fitted and fixed on the connecting support device.

[0010] The positioning of the connecting support device relative to the outer wall of the coal wall side of the reducer is achieved by the cooperation between the pin shaft and the pin hole, and the fixation of the connecting support device relative to the outer wall of the coal wall side of the reducer is achieved by installing fastening screws into the second group of screw holes and the corresponding threaded holes on the outer wall of the coal wall side of the reducer.

[0011] The outer guard plate of the reduction gearbox adopts a split structure, which includes three upper and one lower guard plates. The three upper guard plates are arranged side by side and connected in sequence. The top edge of the lower guard plate is connected to the entire bottom edge of the upper middle guard plate and the partial bottom edges of the upper two side guard plates close to the middle guard plate.

[0012] The edges of the lower guard plate and the three upper guard plates at the joints are all fitted and fixed on the connecting support device, and the fixation between each guard plate and the connecting support device is achieved by screwing connecting screws into the first group of screw holes and the corresponding screw holes on each guard plate.

[0013] The three upper guard plates are rectangular plates.

[0014] The beneficial effects of the present invention are:

[0015] The present invention adopts the connecting support device as a transition link between the reduction box and the outer guard plate of the thin coal seam coal mining machine, which has a simple structure and is easy to install.

[0016] The size and shape of the connecting support device can be freely designed according to the distance between the outer side wall and the outer side guard plate of the thin coal seam coal mining machine reducer in the assembled state and the shape of the coal mining machine reducer, with good adaptability and high flexibility.

[0017] The connecting support device is installed on the outer wall of the thin coal seam coal mining machine reducer through fastening screws and pin shafts, and the outer guard plate is installed on the connecting support device through connecting screws. The connecting support device serves as an intermediate bridge transition link and can provide support for the outer guard plate under the action of the fastening force to avoid its deformation and ensure its normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A front view of an embodiment of the connecting support device of the present invention;

[0019] Figure 2 for Figure 1 AA step cross-sectional view;

[0020] Figure 3 A schematic diagram of the connection and installation of the connecting support device, the shearer reduction box and the outer guard plate;

[0021] Figure 4 for Figure 3 A partial view looking upwards.

[0022] Description of the accompanying drawings: 1. Connecting support device; 1-1. Threaded hole; 1-2. Screw hole; 1-3. Pin hole; 1-4. Top screw hole; 2. Coal mining machine reducer; 3. Pin shaft; 4. Fastening screw; 5-1. Upper left sub-guard plate; 5-2. Upper middle sub-guard plate; 5-3. Upper right sub-guard plate; 5-4. Lower sub-guard plate; 6. Connecting screw; 7. Traction unit housing. DETAILED DESCRIPTION

[0023] like Figure 1-4 As shown, the present invention discloses a connecting support device 1 for reliably mounting the outer guard plate of a reduction gearbox for a thin-seam coal mining machine. The connecting support device is a plate-shaped structure having a first set of screw holes 1-1 at the lower edge of the plate surface, a second set of screw holes 1-2 at the upper middle edge of the plate surface, and a pin hole 1-3 at the middle of the back plate surface.

[0024] The connecting support device has any shape, typically a special shape, determined primarily by the shapes of surrounding components. In the embodiment shown in the accompanying drawings, the connecting support device is boot-shaped, primarily based on the shape of the shearer reduction gearbox 2, allowing for greater flexibility in design. The primary structural dimension of the connecting support device is its thickness, which is determined by the distance between the outer guard plate and the outer wall of the shearer reduction gearbox on the coal wall side when installed. In the embodiment shown in the accompanying drawings, this distance is 80 mm, resulting in a corresponding thickness of the connecting support device of 80 mm.

[0025] A notch is provided in the middle of the lower edge of the plate surface of the connecting support device to avoid other structures on the corresponding outer wall of the reduction box.

[0026] The first group of screw holes is arranged into at least two rows, an upper row and an lower row, wherein the upper row has at least four screw holes and the lower row has at least two screw holes.

[0027] In the embodiment shown in the accompanying drawings, there are five screw holes in the upper row and three in the lower row. The three center screw holes in the upper row and the screw holes at the left and right ends of the upper row are used to attach different sub-guards to the connecting support device. The three screw holes in the lower row are each used to attach another sub-guard. Each sub-guard is a component of the outer guard.

[0028] The first group of screw holes adopts threaded holes, and the second group of screw holes adopts screw holes with countersunk holes, that is, stepped light holes.

[0029] A plurality of top screw holes 1-4 may be provided at intervals on the middle and upper edge of the plate surface of the connecting support device, so as to facilitate the disassembly of the connecting support device.

[0030] The connecting support device fills the space between the outer wall of the coal wall side of the reduction box and the outer guard plate, can provide support for the outer guard plate, avoid bending and deformation of the outer guard plate, and ensure reliable installation of the outer guard plate.

[0031] like Figure 3 、 4 As shown, the present invention also discloses a method for connecting and supporting the outer guard plate of the reduction gearbox by bridging the transition. The method is to install the connecting support device 1 on the outer wall of the coal wall side of the reduction gearbox 2, and then install the outer guard plate of the reduction gearbox on the traction part shell 7 and the connecting support device 1. Since the thickness of the connecting support device can be flexibly set according to the distance between the outer guard plate and the outer wall of the coal wall side of the coal mining machine reduction gearbox in the installation state, the outer side surface of the connecting support device can be flush with the edge surface of the traction part shell after installation. Therefore, the edge of the outer guard plate of the reduction gearbox is directly fitted and fixed on the traction part shell in the installation state, and the middle and lower parts of the outer guard plate of the reduction gearbox are fitted and fixed on the connecting support device, which is equivalent to the connecting support device partially filling the gap between the outer guard plate and the coal mining machine reduction gearbox, increasing the support points of the outer guard plate, and also improving the rigidity of the outer guard plate.

[0032] The positioning of the connecting support device relative to the outer wall of the coal wall side of the reduction gearbox is achieved by the cooperation between the pin shaft 3 and the pin hole, and the fixation of the connecting support device relative to the outer wall of the coal wall side of the reduction gearbox is achieved by installing fastening screws 4 into the second group of screw holes and the corresponding threaded holes on the outer wall of the coal wall side of the reduction gearbox.

[0033] The gearbox outer guard plate adopts a split structure, preferably comprising three upper and one lower sub-guard plates. The three upper sub-guard plates are arranged side by side and connected in sequence, from left to right: the upper left sub-guard plate 5-1, the upper middle sub-guard plate 5-2, and the upper right sub-guard plate 5-3. The top edge of the lower sub-guard plate, i.e., the lower sub-guard plate 5-4, is connected to the entire bottom edge of the upper middle sub-guard plate, the right bottom edge of the upper left sub-guard plate, and the left bottom edge of the upper right sub-guard plate. Split outer guard plates are more convenient to disassemble and assemble than integral ones.

[0034] The edges of the lower guard plate and the three upper guard plates at the joints are all fitted and fixed on the connecting support device, and the fixation between each guard plate and the connecting support device is achieved by screwing connecting screws 6 into the first group of screw holes and the corresponding screw holes on each guard plate.

[0035] In the embodiment shown in the drawings, the three upper guard plates are all rectangular plates, and the lower guard plate is an L-shaped plate.

Claims

1. A method for bridging and transitionally connecting and supporting the outer guard plate of a reduction gearbox, wherein the outer wall of the coal wall side of the traction part housing of the coal mining machine has a concave structure in the middle, and the reduction gearbox of the coal mining machine is fixedly installed in the concave part, characterized by: A connecting support device is installed on the outer wall of the coal wall side of the reduction gearbox, and then the outer guard plate of the reduction gearbox is installed on the traction part shell and the connecting support device. The connecting support device is a plate-shaped structure, and a first set of screw holes is provided at the lower edge of its plate surface, a second set of screw holes is provided at the edge of the middle and upper part of its plate surface, and a pin hole is provided in the middle of its back panel surface. The thickness of the connecting support device is set according to the distance between the outer guard plate of the reduction gearbox and the outer wall of the coal wall side of the reduction gearbox in the installation state, so that the outer side surface of the connecting support device is flush with the edge surface of the traction part shell after installation, and the edge of the outer guard plate of the reduction gearbox is directly fitted and fixed on the traction part shell, and the middle and lower part of the outer guard plate of the reduction gearbox is fitted and fixed on the connecting support device. The outer guard plate of the reduction gearbox adopts a split structure, which includes the above three pieces The top edge of the lower sub-guard plate is connected to the entire bottom edge of the upper middle sub-guard plate and the partial bottom edges of the upper two side sub-guard plates close to the middle sub-guard plate. The edges of the lower sub-guard plate and the three upper sub-guard plates are all fitted and fixed on the connecting support device. The fixation between each sub-guard plate and the connecting support device is achieved by screwing connecting screws into the first group of screw holes and the corresponding screw holes on each sub-guard plate. The positioning of the connecting support device relative to the outer wall of the coal wall side of the reducer is achieved by the cooperation of the pin shaft and the pin hole. The fixation of the connecting support device relative to the outer wall of the coal wall side of the reducer is achieved by installing fastening screws into the second group of screw holes and the corresponding threaded holes on the outer wall of the coal wall side of the reducer.

2. The method for bridging, transitioning, connecting, and supporting the outer guard plate of a reduction gearbox according to claim 1, wherein: A notch is provided in the middle of the lower edge of the plate surface of the connecting support device.

3. The method for connecting and supporting the outer guard plate of a reduction gearbox as claimed in claim 1, characterized in that: The first group of screw holes is arranged into at least two rows, an upper row and an lower row, wherein the upper row has at least four screw holes and the lower row has at least two screw holes.

4. The method for connecting and supporting the outer guard plate of a reduction gearbox as claimed in claim 1, 2 or 3, characterized in that: A plurality of top screw holes are also arranged at intervals on the middle and upper edge of the plate surface of the connecting support device.

5. The method for connecting and supporting the outer guard plate of a reduction gearbox as claimed in claim 1, 2 or 3, characterized in that: The three upper guard plates are rectangular plates.

6. The method for connecting and supporting the outer guard plate of a reduction gearbox as claimed in claim 4, characterized in that: The three upper guard plates are rectangular plates.

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