Onboard secondary side protection device of simple coal mining machine

Abstract

The utility model relates to a simple onboard secondary side protection device of a coal mining machine. At present, after a coal mining machine is shut down, a coal mining machine driver manually carries meshes and monomers to the front of a coal mining machine frame, a construction back slope is jacked, underground supplementary supporting is carried out, and the labor intensity is high. A simple coal mining machine onboard secondary side protection device comprises an upper support side protection, a lower support side protection, an oil cylinder and a sliding rail, the upper support side protection, the lower support side protection, the oil cylinder and the sliding rail form the coal mining machine onboard secondary side protection device, and the bottom of the upper support side protection is rotationally connected with the top of the lower support side protection; the middle of the bottom of the lower support protection side is connected with the end of an oil cylinder plunger of the oil cylinder, the lower support protection side is pushed to move horizontally through stretching and retracting of the oil cylinder plunger, the two ends of the oil cylinder are symmetrically connected with the two sliding rails, the ends of the sliding rails are connected with the bottom of the lower support protection side, and the tail of the oil cylinder is connected with a coal machine plate. The utility model is applied to the onboard field of coal mining machines.

Description

Technical Field

[0001] The utility model is applied to the field of shearer-mounted equipment, and particularly relates to a simple shearer-mounted secondary rib protection device. Background Art

[0002] In underground coal mining operations, in order to ensure the safety of shearer maintenance in fully mechanized mining faces, rib protection measures need to be taken at the maintenance position. In the early stage, the coal wall was temporarily supported mainly through mesh sheets and temporary support monomers.

[0003] Currently, usually after the shearer stops, the shearer driver manually carries the mesh sheet and the monomer to the front of the shearer frame. During the construction of rib support and roof support, additional support is carried out underground, resulting in a large labor intensity. When entering the front of the shearer for rib support and roof support, the coal wall is prone to caving, which can easily injure the maintenance personnel of the shearer and damage the equipment. Therefore, the current technical problems to be solved are: first, the safety factor is low, there is a risk of coal wall caving during support, and it is easy to injure the support personnel; second, the work intensity is large, and it is necessary to repeatedly manually carry the monomers and mesh sheets. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a simple shearer-mounted secondary rib protection device.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A simple shearer-mounted secondary rib protection device includes an upper support rib protection, a lower support rib protection, an oil cylinder, and a slide rail. The upper support rib protection, the lower support rib protection, the oil cylinder, and the slide rail form a shearer-mounted secondary rib protection device. The bottom of the upper support rib protection is rotatably connected to the top of the lower support rib protection;

[0007] The middle position at the bottom of the lower support rib protection is connected to the end of the oil cylinder piston rod. The horizontal movement of the lower support rib protection is pushed by the telescopic movement of the oil cylinder piston rod. Two slide rails are symmetrically connected to both ends of the oil cylinder. The end of the slide rail is connected to the bottom of the lower support rib protection, and the tail of the oil cylinder is connected to the shearer machine plate.

[0008] For the simple shearer-mounted secondary rib protection device, the upper support rib protection and the lower support rib protection include a cross beam, a longitudinal beam, a steel mesh, and an iron sheet. The cross beam and the longitudinal beam are vertically connected to form a main frame structure, and the steel mesh and the iron sheet are fixedly connected to the main frame.

[0009] For the simple shearer-mounted secondary rib protection device, the slide rail includes a rectangular insertion tube and a telescopic rail inserted into the rectangular insertion tube. The end of the telescopic rail is connected through a pair of plates and a pin shaft with a retaining pin.

[0010] For the simple shearer-mounted secondary rib protection device, a transverse upper support plate and a longitudinal upper support plate are installed on the upper support rib protection.

[0011] For the described simple shearer-mounted secondary coal rib protection device, a longitudinal lower support plate is installed on the lower support coal rib protection.

[0012] For the described simple shearer-mounted secondary coal rib protection device, circular ring handles are respectively connected between the top and both sides of the upper support coal rib protection and both sides of the lower support coal rib protection.

[0013] For the described simple shearer-mounted secondary coal rib protection device, the end of the piston rod of the oil cylinder is connected to the lower support coal rib protection through a pair of plates and a pin shaft with a retaining pin.

[0014] The beneficial effects achieved by the present utility model are as follows:

[0015] The present utility model reduces physical labor, prevents coal rib spalling, and improves the operation safety of maintenance personnel.

[0016] The secondary coal rib protection device of the present utility model greatly reduces the labor intensity of the shearer maintenance personnel during the maintenance shift. It protects the coal rib before the personnel enter the coal rib side, ensuring the operation safety of the maintenance personnel.

[0017] The support plate of the present utility model is a simple triangular support frame, which is installed in the middle of the longitudinal beam outside the coal rib protection net and the cross beam at the upper support coal rib protection, preventing the upper support coal rib protection or the lower support coal rib protection from bending under weight after folding back. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0019] Att Figure 1 is a schematic structural view of the present utility model;

[0020] Att Figure 2 is a top view of Att Figure 1 ;

[0021] Att Figure 3 is a left view of Att Figure 1 ;

[0022] Att Figure 4 is a schematic structural view of the present utility model after folding;

[0023] Att Figure 5 is a connection schematic view of the pair of plates, the retaining pin and the pin shaft;

[0024] In the figure: 1. Upper support rib protection, 2. Lower support rib protection, 3. Oil cylinder, 4. Slide rail, 5. Oil cylinder piston rod, 6. Opposing plate, 7. Stop pin, 8. Pin shaft, 9. Transverse upper support plate, 10. Longitudinal upper support plate, 11. Longitudinal lower support plate, 12. Ring handle, 13. Hinge, 14. Oil cylinder return liquid joint, 15. Oil cylinder inlet liquid joint, 1-1. Cross beam, 1-2. Longitudinal beam, 1-3. Reinforcement mesh, 1-4. Iron sheet, 4-1. Rectangular socket, 4-2. Telescopic rail. Detailed implementation method

[0025] The following is a description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0026] Embodiment 1:

[0027] The lower part of the rib protection net folds downward, and the upper half folds upward.

[0028] A simple coal shearer airborne secondary rib protection device. During production, the airborne rib protection device is retracted and folded and placed on the coal shearer body. During maintenance, the maintenance personnel operate the handle to extend the oil cylinder, and the airborne rib protection device is extended in front of the coal wall. The support rib protection is retracted. A safety rope is used to pass through between the rib protection plate and the roof beam to lift the rib protection device. After the lifting is completed, the support rib protection plate is extended, so that the airborne rib protection device is close to the coal wall. The maintenance personnel enter in front of the coal shearer body to remove the connecting pin shafts between the oil cylinder, the slide rail and the rib protection device. When safely returning to the support, the coal shearer is started, and the position to be maintained in front of the body is towed to directly in front of the airborne rib protection device.

[0029] A simple coal shearer airborne secondary rib protection device, including an upper support rib protection 1, a lower support rib protection 2, an oil cylinder 3 and a slide rail 4. The upper support rib protection, the lower support rib protection, the oil cylinder and the slide rail form a coal shearer airborne secondary rib protection device. The bottom of the upper support rib protection is rotatably connected to the top of the lower support rib protection;

[0030] The middle position at the bottom of the lower support rib protection is connected to the end of the oil cylinder piston rod 5 of the oil cylinder. The lower support rib protection is horizontally moved by the telescopic movement of the oil cylinder piston rod. Two slide rails are symmetrically connected to both ends of the oil cylinder. The end of the slide rail is connected to the bottom of the lower support rib protection. The tail of the oil cylinder is connected to the coal shearer machine plate.

[0031] The bottom of the upper support rib protection and the top of the lower support rib protection are rotatably connected through a hinge therebetween, so that the upper support rib protection and the lower support rib protection can be folded.

[0032] Embodiment 2:

[0033] The simple shearer-mounted secondary rib protection device according to Embodiment 1, the upper support rib protection and the lower support rib protection include a cross beam 1-1, a longitudinal beam 1-2, a steel wire mesh 1-3 and an iron sheet 1-4. The cross beam and the longitudinal beam are vertically connected to form a main frame structure, and the steel wire mesh and the iron sheet are fixedly connected to the main frame.

[0034] The cross beam and the longitudinal beam described above are made of steel pipe structures, and a group of cross beams and a group of longitudinal beams are fixedly connected into an integral structure by welding. At the same time, the steel wire mesh is fixedly connected between a group of cross beams and a group of longitudinal beams by welding, and the iron sheet is fixedly connected to the steel wire mesh by welding, so that the steel wire mesh and the iron sheet are set as an integral structure, and the iron sheet is provided to play a protective role.

[0035] Embodiment 3:

[0036] The simple shearer-mounted secondary rib protection device according to Embodiment 1 or 2, the slide rail includes a rectangular socket 4-1 and a telescopic rail 4-2 inserted into the rectangular socket, wherein the end of the telescopic rail is connected by a pair of plates 6 and a pin shaft 8 with a retaining pin 7.

[0037] The length and width of the telescopic rail are smaller than the length and width of the inner rectangular hole of the rectangular socket, so that the telescopic rail can be inserted into the rectangular socket. By providing the slide rail, a symmetric support can be provided for the lower support rib protection.

[0038] Embodiment 4:

[0039] The simple shearer-mounted secondary rib protection device according to Embodiment 1 or 2 or 3, a transverse upper support plate 9 and a longitudinal upper support plate 10 are installed on the upper support rib protection.

[0040] The transverse upper support plate and the longitudinal upper support plate are made of triangular steel plate structures, and the ends of the transverse upper support plate and the longitudinal upper support plate are fixedly connected to the cross beam and the longitudinal beam of the upper support rib protection by welding, so as to prevent the upper support rib protection from being bent under weight after folding back.

[0041] Embodiment 5:

[0042] The simple shearer-mounted secondary rib protection device according to Embodiment 1 or 2 or 3 or 4, a longitudinal lower support plate 11 is installed on the lower support rib protection.

[0043] The longitudinal lower support plate is made of a triangular steel plate structure, and the end of the longitudinal lower support plate is fixedly connected to the longitudinal beam of the lower support rib protection by welding, so as to prevent the lower support rib protection from being bent under weight after folding back.

[0044] Embodiment 6:

[0045] The simple coal shearer airborne secondary rib protection device according to Embodiment 1 or 2 or 3 or 4 or 5, circular handle 12 is respectively connected to the top and both sides of the upper support rib protection and both sides of the lower support rib protection.

[0046] The circular handle is a φ126 chain link structure, and the circular handle is fixed above the upper support rib protection and on the side of the lower support rib protection by welding.

[0047] Embodiment 7:

[0048] The simple coal shearer airborne secondary rib protection device according to Embodiment 1 or 2 or 3 or 4 or 5 or 6, the end of the piston rod of the oil cylinder is connected to the lower support rib protection through a pair of plates and a pin shaft with a retaining pin.

[0049] The pair of plates are two symmetrical steel plate structures, and the ends of the pair of plates are fixed below the lower support rib protection by welding. A jack is provided on the pair of plates. The pin shaft is inserted into the jack of the pair of plates, and then the retaining pin is inserted into the hole of the pin shaft to prevent the pin shaft from falling off from the pair of plates. Through the above structure, the slide rail and the oil cylinder can be connected to the lower support rib protection.

Claims

1. A simple secondary coal wall protection device mounted on a shearer, characterized in that, It includes an upper support rib protection, a lower support rib protection, an oil cylinder and a slide rail. The upper support rib protection, the lower support rib protection, the oil cylinder and the slide rail form a secondary rib protection device on the shearer. The bottom of the upper support rib protection is rotatably connected to the top of the lower support rib protection; The middle position at the bottom of the lower support rib protection is connected to the end of the oil cylinder piston rod of the oil cylinder. The lower support rib protection is horizontally moved by the telescopic movement of the oil cylinder piston rod. Two slide rails are symmetrically connected to both ends of the oil cylinder. The end of the slide rail is connected to the bottom of the lower support rib protection. The tail of the oil cylinder is connected to the shearer machine plate.

2. The second-level rib protection device on the simple coal shearer according to claim 1, characterized in that, The upper support rib protection and the lower support rib protection include a cross beam, a longitudinal beam, a steel wire mesh and an iron sheet. The cross beam and the longitudinal beam are vertically connected to form a main frame structure. The steel wire mesh and the iron sheet are fixedly connected to the main frame.

3. The secondary rib protection device on the simple coal shearer according to claim 1, characterized in that, The slide rail includes a rectangular socket and a telescopic rail inserted into the rectangular socket. The end of the telescopic rail is connected by a pair of plates and a pin shaft with a retaining pin.

4. The simple coal shearer-mounted secondary rib protection device according to claim 1, characterized in that, A transverse upper support plate and a longitudinal upper support plate are installed on the upper support rib protection.

5. The simple shearer-mounted secondary rib protection device according to claim 1, characterized in that, A longitudinal lower support plate is installed on the lower support rib protection.

6. The simple shearer-mounted secondary rib protection device according to claim 4, characterized in that Ring handles are respectively connected between the top and both sides of the upper support rib protection and both sides of the lower support rib protection.

7. The simple coal shearer-mounted secondary rib protection device according to claim 1, characterized in that, The end of the oil cylinder piston rod of the oil cylinder is connected to the lower support rib protection by a pair of plates and a pin shaft with a retaining pin.

Images