Simple device for cannon head shield of coal mine fully-mechanized coal winning machine

Abstract

The utility model relates to the technical field of tunneling equipment, in particular to a simple cannon head shield device of a coal mine fully-mechanized roadheader, which comprises an upper shield plate and a lower shield plate, the upper shield plate and the lower shield plate are both of arc-shaped structures and are concentrically overlapped inside and outside, and the upper shield plate and the lower shield plate can relatively rotate, push and pull around the circle center. The upper shield plate and the lower shield plate are connected in a sliding mode, and an outer end plate and an inner end plate are fixed to the same ends of the upper shield plate and the lower shield plate respectively. The upper protective cover plate and the lower protective cover plate can rotate, push and pull around the circle center, the upper protective cover plate and the lower protective cover plate are pulled open to form an arch shape to cover the outer side of the gun head of the roadheader for protection when in use, and the upper protective cover plate and the lower protective cover plate are overlapped when not in use, so that the size is reduced and the storage is convenient. The upper protective cover plate and the lower protective cover plate are both made of rigid light materials, and compared with the prior art, the protective performance is good, and the weight is light.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunneling equipment technical field more specifically, especially relates to a simple device of coal mine fully mechanized heading machine gun head shield. BACKGROUND

[0002] The coal mine fully mechanized heading machine is a kind of special mechanical equipment manufactured for coal mine roadway tunneling, mainly utilizes motor drive cutting (gun) head to break rock (coal), replaces the traditional artificial drilling and blasting tunneling construction technology of past.But the gun head safety accidents that follow cannot be highly valued, "Coal Mine Safety Regulations" requires that fully mechanized heading machine must be stopped using when the gun head is laid on the ground and is protected by shield, to avoid the harm to operating personnel.At present, the traditional shield is more, mainly is bulky, heavy, inconvenient to carry, easy to damage, it is inconvenient to store in the narrow operating environment in pit, some are used automatic and semi-automatic mechanical structure, it is more complex to use, it is easy to cause damage when roadway tunneling and investment cost is high, there is certain problem in use, not recognized by underground operating personnel.

[0003] The utility model discloses a kind of telescopic heading machine cutting head protection devices, including protective cover, bracing rod, framework and folding rod, protective cover cover is set on the space above the support of framework, bracing rod connects and fixes the both ends of framework, folding rod is connected with the color steel plate of both ends of framework.The device can be telescopic length, folding, and the performance of storage is good, in addition, cutting head can be comprehensively shielded, to avoid mis-touching.But its insufficient is that protective cover includes arc steel ring, wind tube cloth and hanging ring, the flexibility of wind tube cloth makes the device can be folded and stored, but the rigidity of wind tube cloth is insufficient, and protective effect is poor, in addition, when storing the protective device, bracing rod structure needs to be extracted, so the remaining parts of the protective device and bracing rod become mutually independent part and are stored, bracing rod is easily lost. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a simple device of coal mine fully mechanized heading machine gun head shield to overcome the above-mentioned situation.

[0005] A simple device of coal mine fully mechanized heading machine gun head shield, including upper shield plate and lower shield plate, the upper shield plate and lower shield plate are both arc-shaped structure and overlap inside and outside the same center, the upper shield plate and lower shield plate can be pushed and pulled relative to the rotation around the center, the upper shield plate and lower shield plate are slidably connected, the same end of the upper shield plate and lower shield plate is respectively fixed with outer end plate and inner end plate.

[0006] Further, the upper shield plate is provided with positioning guide grooves at both ends of the inner side, the positioning guide grooves are closed at both ends, the lower shield plate is fixed with positioning pins at the outer side, and the ends of the positioning pins away from the lower shield plate are slidably arranged in the positioning guide grooves.

[0007] Further, the upper shield plate and the lower shield plate are circular arc structures in the cross section perpendicular to the central axis, and the radii of the upper shield plate and the lower shield plate gradually increase in the direction away from the outer end plate and the inner end plate.

[0008] Further, the upper shield plate and the lower shield plate are respectively provided with upper ridges and lower ridges, and the upper ridges and the lower ridges are arranged in a clamping and sliding connection after being overlapped.

[0009] Further, the upper ridges and the lower ridges are respectively arranged at the inner sides of the upper shield plate and the lower shield plate, and form overlapped inverted V-shaped grooves at the outer sides of the upper shield plate and the lower shield plate.

[0010] Further, it further includes a magnet strip, the magnet strip is arranged at the inner lower side edge of the upper shield plate and the inner middle lower part of the lower shield plate, and the magnet strip is in an unfolded state.

[0011] Further, the number of magnet strips arranged on the inner side of the upper shield plate is less than the number of magnet strips arranged on the inner side of the lower shield plate.

[0012] Further, the outer sides of the upper shield plate and the lower shield plate are respectively provided with reflective strips.

[0013] Further, the outer side of the upper shield plate is provided with a handle.

[0014] Further, the positioning pin includes a positioning rod and a positioning head, one end of the positioning rod is fixedly connected with the lower shield plate, the other end is connected with the positioning head, the positioning head is slidably arranged in the positioning guide groove, the inner sides of both ends of the positioning guide groove are fixedly provided with buckles, and the positioning head is detachably clamped in the buckles.

[0015] Compared with the prior art, the coal mine fully mechanized heading machine gun head shield simple device has the advantages that:

[0016] The coal mine fully mechanized heading machine gun head shield simple device in the utility model, including upper shield plate and lower shield plate, the upper shield plate and the lower shield plate are all arc structures and are overlapped inside and outside the same circle center, and the upper shield plate and the lower shield plate can rotate around the circle center and be pushed and pulled, the upper shield plate and the lower shield plate are pulled apart to form an arch-shaped cover outside the fully mechanized heading machine gun head for protection during use, and the upper shield plate and the lower shield plate are overlapped to reduce the volume and save space when not in use, so that the device is convenient to store.

[0017] The simple device of the coal mine fully-mechanized excavator gun head shield in the utility model is unfolded in use, is in a half-cone structure with one end thick and one end thin, conforms to the structural characteristics of the fully-mechanized excavator gun head, and is more fitted with the fully-mechanized excavator gun head, reduces the volume of the front end of the shield while protecting, and further reduces the volume of the front end of the shield. The magnet strip is arranged, and the shield is magnetically connected with the fully-mechanized excavator gun head in use, so that displacement of the shield is effectively prevented. The reflective strips on the upper and lower shield plates are arranged to play a warning role in a dark environment underground. BRIEF DESCRIPTION OF DRAWINGS

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

[0019] Figure 1 is a whole structure schematic diagram of the simple device of the coal mine fully-mechanized excavator gun head shield in example one in an unfolded state.

[0020] Figure 2 is a whole structure schematic diagram of the simple device of the coal mine fully-mechanized excavator gun head shield in example one in another view of an unfolded state.

[0021] Figure 3 is a whole structure schematic diagram of the simple device of the coal mine fully-mechanized excavator gun head shield in example one in a folded state.

[0022] Figure 4 is Figure 2 is an enlarged view of A in the figure.

[0023] Figure 5 is a partial structure schematic diagram of the simple device of the coal mine fully-mechanized excavator gun head shield in example two in a folded state.

[0024] In the figure: 1, upper shield plate; 2, lower shield plate; 3, outer end plate; 4, inner end plate; 5, positioning guide groove; 6, positioning pin; 601, positioning rod; 602, positioning head; 7, upper transverse ridge; 8, lower transverse ridge; 9, magnet strip; 10, reflective strip; 11, handle; 12, buckle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Example one:

[0027] As Figure 1 , Figure 2 and Figure 3 shown, the coal mine fully mechanized heading machine gun head shield simple device in the embodiment, including upper shield plate 1 and lower shield plate 2, upper shield plate 1 and lower shield plate 2 are all arc structure and same center inside and outside interfold, upper shield plate 1 and lower shield plate 2 can be relative rotation push and pull around the center, upper shield plate 1 and lower shield plate 2 are slidably connected, the same end of upper shield plate 1 and lower shield plate 2 is respectively fixed with outer end plate 3 and inner end plate 4.

[0028] Specifically, the cross section of upper shield plate 1 and lower shield plate 2 perpendicular to the central axis is circular arc structure, and the cross section radius of upper shield plate 1 and lower shield plate 2 gradually increases along the direction away from outer end plate 3 and inner end plate 4, so that when upper shield plate 1 and lower shield plate 2 are in unfolded state, one end of fixed outer end plate 3 and inner end plate 4 is thin, and the other end is thick. When upper shield plate 1 and lower shield plate 2 are in unfolded state, outer end plate 3 and inner end plate 4 are partially overlapped, and the lower end is flush with the end face of upper shield plate 1 and lower shield plate 2 away from each other.

[0029] In the embodiment, positioning guide groove 5 is arranged on the inner side of upper shield plate 1 close to and away from outer end plate 3, positioning guide groove 5 is arranged in the circumferential direction, and the two ends of positioning guide groove 5 are closed, as shown in Figure 4 lower shield plate 2 is fixed with positioning pin 6 on the outer side, the end of positioning pin 6 away from lower shield plate 2 is slidably and clampedly arranged in positioning guide groove 5, so that upper shield plate 1 and lower shield plate 2 are separated during unfolding and folding. The outer side of upper shield plate 1 is provided with a handle 11, which is convenient for operation.

[0030] Upper transverse ridge 7 and lower transverse ridge 8 are arranged on the upper shield plate 1 and the lower shield plate 2 respectively, the upper transverse ridge 7 and the lower transverse ridge 8 are arranged in the circumferential direction and the two ends are penetrated, and the upper transverse ridge 7 and the lower transverse ridge 8 are clamped and slidably connected. Upper transverse ridge 7 and lower transverse ridge 8 can be arranged on the inner side or the outer side of the shield, specifically, in the embodiment, upper transverse ridge 7 and lower transverse ridge 8 are arranged on the inner side of upper shield plate 1 and lower shield plate 2 respectively, and form overlapping inverted V-shaped groove on the outer side of upper shield plate 1 and lower shield plate 2, which not only increases the strength of the shield, but also serves as the track groove for the displacement of the upper and lower shield plates, increasing the stability during mutual push and pull. Preferably, upper transverse ridge 7 and lower transverse ridge 8 are arranged between two positioning guide grooves 5, and three are arranged respectively.

[0031] The simplified device for the gun head shield of a coal mine excavator in this embodiment also includes a magnet bar 9. The magnet bar 9 is disposed on the side where the inner surfaces of the upper and lower shield plates 1 and 2 face away from each other when the shield is in the extended state. The thickness of the magnet bar 9 is greater than the height of the upper and lower transverse ridges 7 and 8. Because the upper shield plate 1 is positioned outside the lower shield plate 2 when the shield is in the retracted state, the number of magnet bars 9 disposed on the inner surface of the upper shield plate 1 is less than the number of magnet bars 9 disposed on the inner surface of the lower shield plate 2. Furthermore, when the shield is in the retracted state, the magnet bars 9 on the upper shield plate 1 do not overlap with the lower shield plate 2. During use, the magnet bars 9 in the lower shield plate 2 are first magnetically connected to the gun head of the excavator. Then, the upper shield plate 1 is pulled to extend the shield, and the magnet bars 9 in the upper shield plate 1 are then magnetically connected to the gun head of the excavator. Specifically, the number of magnet bars 9 is set according to the actual structure of the gun head of the excavator.

[0032] In this embodiment, reflective strips 10 are provided on the outer sides of the upper shield plate 1 and the lower shield plate 2. Specifically, reflective strips 10 are attached to the middle and both ends of the outer sides of the upper shield plate 1 and the lower shield plate 2 to serve as a warning. Fluorescent strips can also be attached to serve as a warning in dark environments.

[0033] The upper shield plate 1 and the outer end plate 3, as well as the lower shield plate 2 and the inner end plate 4 in this embodiment are all integrated. Specifically, they are made of fiberglass and molded by pressing. The fiberglass has the characteristics of high strength, flame retardancy and light weight, which meets the requirements of the tunnel boring machine's gun head protection.

[0034] Example 2:

[0035] like Figure 5 As shown, the simplified device for the gun head shield of a coal mine tunneling machine in this embodiment is a further improvement on the first embodiment. In this embodiment, the positioning pin 6 includes a positioning rod 601 and a positioning head 602. One end of the positioning rod 601 is connected to the lower shield plate 2, and the other end is connected to the positioning head 602. The positioning head 602 is slidably arranged in the positioning guide groove 5. The positioning head 602 has a cylindrical structure. A buckle 12 is fixed on the inner side of both ends of the positioning guide groove 5. The buckle 12 has an annular structure with an opening, and the inner side of the buckle 12 is adapted to the positioning head 602. The buckle 12 is made of elastic steel, and the positioning head 602 is detachably embedded in the buckle 12. When the upper shield plate 1 and the lower shield plate 2 are in the unfolded state, the positioning head 602 is engaged with the buckle 12 on one side of the upper shield plate 1 close to the lower shield plate 2. When the upper shield plate 1 and the lower shield plate 2 are in the folded state, the positioning head 602 is engaged with the buckle 12 on the other side, so that the upper shield plate 1 and the lower shield plate 2 can be in a relatively fixed state, which makes it easier to protect when unfolded and to store when folded.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A simple device for a coal mine fully-mechanized coal mining machine head shield, characterized in that, The utility model provides a kind of protective cover, including upper shield plate (1) and lower shield plate (2), the upper shield plate (1) and lower shield plate (2) are all arc structure and same concentric inside and outside overlap, the upper shield plate (1) and lower shield plate (2) can be relative rotation push and pull around the center, the upper shield plate (1) and lower shield plate (2) are slidably connected, the same end of the upper shield plate (1) and lower shield plate (2) is respectively fixed with outer end plate (3) and inner end plate (4).

2. The simple device of the fully-mechanized coal mining heading machine cannon head shield according to claim 1, characterized in that, The upper shield plate (1) is provided with positioning guide groove (5) at both ends of the inner side, the both ends of the positioning guide groove (5) are closed, the lower shield plate (2) is fixed with positioning pin (6) at the outer side, the end of the positioning pin (6) away from the lower shield plate (2) is slidably arranged in the positioning guide groove (5).

3. The simple device of the heading machine cannon head shield of coal mine according to claim 2, characterized in that, The cross section of the upper shield plate (1) and lower shield plate (2) perpendicular to the central axis is circular arc structure, the radius of the upper shield plate (1) and lower shield plate (2) gradually increases along the direction away from the outer end plate (3) and inner end plate (4).

4. The simple device of the heading machine cannon head shield of coal mine according to claim 3, characterized in that, The upper shield plate (1) and lower shield plate (2) are respectively provided with upper transverse ridge (7) and lower transverse ridge (8), the upper transverse ridge (7) and lower transverse ridge (8) are arranged along the circumference and are clamped and slidably connected.

5. The simple device of the heading machine cannon head shield of coal mine according to claim 4, characterized in that, The upper transverse ridge (7) and lower transverse ridge (8) are respectively arranged at the inner side of the upper shield plate (1) and lower shield plate (2), and form an inverted V-shaped groove on the outer side of the upper shield plate (1) and lower shield plate (2).

6. The simple device of the heading machine cannon head shield of coal mine according to claim 5, characterized in that, It also includes a magnet strip (9), which is arranged at the inner lower side edge of the upper shield plate (1) and the inner middle lower part of the lower shield plate (2), and the magnet strip is in an unfolded state.

7. The simple device of the heading machine cannon head shield of coal mine according to claim 6, characterized in that, The number of magnet strips (9) arranged on the inner side of the upper shield plate (1) is less than the number of magnet strips (9) arranged on the inner side of the lower shield plate (2).

8. The simple device of the heading machine cannon head shield of coal mine according to claim 7, characterized in that, The outer side of the upper shield plate (1) and the lower shield plate (2) is provided with a light reflection strip (10).

9. The simple device of the heading machine cannon head shield of coal mine according to claim 8, characterized in that, The outer side of the upper shield plate (1) is provided with a handle (11).

10. The simple device of the heading machine cannon head shield of coal mine according to claim 9, characterized in that, The positioning pin (6) includes a positioning rod (601) and a positioning head (602), one end of the positioning rod (601) is fixedly connected with the lower shield plate (2), the other end is connected with the positioning head (602), the positioning head (602) is slidably arranged in the positioning guide groove (5), the inner side of both ends of the positioning guide groove (5) is fixedly provided with a buckle (12), and the positioning head (602) can be detachably clamped in the buckle (12).

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