CN212454499U

CN212454499U - Coal mining tunneling shield structure

Info

Publication number: CN212454499U
Application number: CN202021095852.0U
Authority: CN
Inventors: 李迎; 张致华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-02
Anticipated expiration: 2030-06-15

Abstract

The utility model discloses a coal mining tunneling shield structure, which can relieve the instantaneous impact force on a hydraulic rod when falling rocks and reduce the damage probability of the hydraulic rod, it is characterized in that a top plate is fixedly arranged between the bottoms of the two vertical plates, the cross sections of the vertical plates are in a trapezoidal structure, a plurality of corresponding chutes are arranged on the vertical plates, the chutes on the vertical plates are arranged in an inclined way, a plurality of protective rollers are arranged between the two vertical plates, two ends of a roller shaft of the protective roller between the two vertical plates are arranged in the chutes on the two vertical plates in a one-to-one correspondence way, a front beam is hinged on one side of the top plate, a shield plate is hinged on the other side of the top plate, the two sides of the shield plate are bent and extended upwards to form a fixed plate, the section of the fixed plate is of a trapezoidal structure, the fixed plates are all provided with a plurality of corresponding sliding chutes which are arranged in an inclined way.

Description

Coal mining tunneling shield structure

Technical Field

The utility model relates to a coal mining tunnelling shield structure relates to one kind and can provide the structure of shielding when coal mining tunnelling, belongs to the coal mine equipment field. In particular to a coal mining tunneling shield structure which can relieve the instantaneous impulse force of a hydraulic rod when falling rocks and reduce the damage probability of the hydraulic rod.

Background

At present, at the in-process of coal mining, along with the constantly increase of tunnelling depth, tunnel collapse is to operation personnel's injury during in order to avoid excavating, need adopt roof shield device to shield the top of roadway and prop, protect effect personnel and equipment, and current shield device generally supports through hydraulic column cooperation roof, but when taking place to fall over and collapse, the rock fragment of whereabouts can lead to the fact powerful impact force to the roof, the roof transmits the rigidity impact force to the hydraulic column on, make the inside vibration impact that receives of hydraulic column and damage, and then influence the normal life of hydraulic column.

The publication No. CN210317371U discloses a special tunneling safety shield device for coal mining, which comprises a base, a lifting plate, a hydraulic machine and a top protection seat, the left side surface of the base is fixedly provided with a mutual moving frame, the upper surface of the base is fixedly provided with four groups of hydraulic machines, the hydraulic machine comprises a driving pump and hydraulic rods, the bottom ends of the four groups of hydraulic rods are respectively fixedly connected with the four corners of the upper surface of the base, the top ends of the four groups of hydraulic rods are respectively fixedly connected with the four corners of the lower surface of the lifting plate, four corners of the upper surface of the lifting plate are respectively provided with a group of buffer devices, each buffer device comprises a movable column, a fixed column, a guide column and a spring, the length of the movable column is shorter than that of the fixed column, the bottom end of the fixed column is provided with a cylindrical groove, when the shield device collapses, the protective seat on the top plate of the shield device can rigidly collide with the falling rocks, so that the protective seat on the shield device is easy to damage.

The publication number CN209780932U discloses a tunneling shield device for coal mining, which comprises a support component, a hydraulic component and a shield component, wherein the top of the support component is provided with the shield component, and the support component is connected with the shield component through the hydraulic component; the shield assembly comprises a top plate, a first front beam, a second front beam, a third hydraulic rod, a fourth hydraulic rod, a plate body and a limiting part, wherein one side of the top plate is rotatably connected with the first front beam, the top plate is connected with the first front beam through the third hydraulic rod, a buffer structure is lacked between a hydraulic column and the top plate of the shield assembly, and the hydraulic column is easy to damage when rockfall impact occurs.

Disclosure of Invention

In order to improve the condition, the utility model relates to a coal mining tunnelling shields structure provides one kind and can alleviate the instantaneous impulsive force that the hydraulic stem received when falling the stone, reduces the coal mining tunnelling of hydraulic stem harm probability and shields the structure.

The utility model relates to a coal mining tunnelling shield structure is realized like this: the utility model relates to a coal mining tunneling shield structure, which comprises a protective roller, vertical plates, shield plates, a hydraulic rod, a base, a connecting seat, a front beam, a supporting rod, a supporting plate, a spring, chutes, a roll shaft, a buffer rod, chutes and a top plate, wherein the top plate is fixed between the bottoms of the two vertical plates, the cross section of each vertical plate is of a trapezoidal structure, a plurality of corresponding chutes are arranged on the vertical plates, the chutes on the vertical plates are obliquely arranged, a plurality of protective rollers are arranged between the two vertical plates, the two ends of the roll shaft of the protective roller between the two vertical plates are correspondingly arranged in the chutes on the two vertical plates one by one, the front beam is hinged on one side of the top plate, the shield plates are hinged on the other side of the top plate, the two sides of the shield plates are bent and extend upwards to form fixed plates, the cross section of each fixed plate is of a, a plurality of protective rollers are arranged between the two fixed plates, two ends of a roller shaft of each protective roller between the two fixed plates are arranged in sliding grooves on the two fixed plates in a one-to-one correspondence manner, at least one spring is fixedly arranged between the roller shaft of each protective roller and the bottom of each sliding groove, supporting rods are respectively fixedly arranged at positions, close to two sides, of the bottom of the top plate, a supporting plate is arranged between the two supporting rods, a row of horizontal through chutes are formed in the supporting plate, buffer rods are arranged in the chutes, penetrate through the chutes, and are fixedly connected with the two supporting rods respectively at two ends, at least three movable ends of the hydraulic rods are connected with the bottoms of the supporting plates, the base is connected with the fixed end of the hydraulic rod, a connecting seat is fixedly arranged at the middle position of one side of the base, one end of the front beam is provided with a protective net;

further, at least one reinforcing plate is fixedly arranged on the top plate, the reinforcing plate separates the top plate into at least two protective grooves, a plurality of groups of sliding grooves are formed in the inner wall of each protective groove, one group of sliding grooves consists of two opposite sliding grooves, a plurality of protective rollers are arranged in each protective groove, one protective roller corresponds to one group of sliding grooves, and two ends of a roller shaft on each protective roller are arranged in one group of sliding grooves respectively.

Has the beneficial effects.

Firstly, can carry out multilayer shock attenuation buffering when falling the stone and strike, alleviate the instantaneous impact force that the hydraulic stem received.

Secondly, simple structure, convenient to use.

Drawings

Fig. 1 the utility model relates to a coal mining tunnelling shield structure's spatial structure chart.

Fig. 2 the utility model relates to a coal mining tunnelling shield structure's schematic structure diagram.

Fig. 3 the utility model relates to a coal mining tunnelling shields structural sketch of roof.

Fig. 4 is a perspective view of a coal mining excavation shield structure according to embodiment 2 of the present invention.

In the attached drawings

Wherein the method comprises the following steps: the shield roller comprises a protective roller 1, a vertical plate 2, a shield plate 3, a hydraulic rod 4, a base 5, a connecting seat 6, a front beam 7, a supporting rod 8, a supporting plate 9, a spring 10, a sliding groove 11, a roller shaft 12, a buffer rod 13, a chute 14, a reinforcing plate 15 and a top plate 16.

The specific implementation mode is as follows:

example 1

The utility model relates to a coal mining tunnelling shield structure is realized like this: the utility model relates to a coal mining tunneling shield structure, which comprises a protective roller 1, vertical plates 2, shield plates 3, a hydraulic rod 4, a base 5, a connecting seat 6, a front beam 7, a support rod 8, a support plate 9, a spring 10, sliding chutes 11, a roller shaft 12, a buffer rod 13, a chute 14 and a top plate 16, wherein the top plate 16 is fixedly arranged between the bottoms of the two vertical plates 2, the cross section of each vertical plate 2 is of a trapezoidal structure, the vertical plates 2 are respectively provided with a plurality of corresponding sliding chutes 11, the sliding chutes 11 on the vertical plates 2 are obliquely arranged, a plurality of protective rollers 1 are arranged between the two vertical plates 2, two ends of the roller shaft 12 of each protective roller 1 between the two vertical plates 2 are correspondingly arranged in the sliding chutes 11 on the two vertical plates 2, one side of each top plate 16 is hinged with a front beam 7, the other side of each top plate 16 is hinged with a shield plate 3, the two sides of each shield, the fixed plates are all provided with a plurality of corresponding chutes 11, the chutes 11 on the fixed plates are obliquely arranged, a plurality of protective rollers 1 are arranged between the two fixed plates, two ends of a roll shaft 12 of each protective roller 1 between the two fixed plates are correspondingly arranged in the chutes 11 on the two fixed plates one by one, at least one spring 10 is fixedly arranged between the roll shaft 12 of each protective roller 1 and the bottom of each chute 11, supporting rods 8 are respectively fixedly arranged at positions close to two sides of the bottom of a top plate 16, a supporting plate 9 is arranged between the two supporting rods 8, a row of inclined grooves 14 which horizontally penetrate through are arranged on the supporting plate 9, buffer rods 13 are arranged in the inclined grooves 14, the buffer rods 13 penetrate through the inclined grooves 14, two ends of each buffer rod are respectively and fixedly connected with the two supporting rods 8, at least one spring 10 is fixed between the bottoms of the buffer rods 13 and the inclined grooves 14, and at, the base 5 is connected with the fixed end of the hydraulic rod 4, a connecting seat 6 is fixedly arranged in the middle of one side of the base 5, fixing nails are arranged at the bottom of the base 5, and a protective net is arranged at one end of the front beam 7;

when the device is used, the shield structure is firstly placed in a roadway, the connecting seat 6 is fixed on the ground by using bolts, when falling rocks occur, the falling rocks fall onto the protective roller 1 at the top of the top plate 16, the protective roller 1 can overcome the stress of the spring 10 in the sliding groove to press down, in the pressing down process, part of impact force caused by the falling rocks can be buffered, the rest impact force enables the top plate 16 to slide down, at the moment, the support rod 8 at the bottom of the top plate 16 can drive the buffer rod 13 to overcome the stress of the spring 10 in the chute 14 on the support plate 9 to slide down in an inclined manner, the rest impact force is further buffered, the falling rocks are subjected to multilayer shock absorption and buffering, and the hydraulic rod 4 is prevented from being damaged due to instantaneous impact force;

the roof 16 of the shield structure is provided with the protection roller 1 placed obliquely, impact force can be buffered to a certain degree by utilizing rotation, damage to the roof 16 is relieved, meanwhile, falling rocks falling on the protection roller 1 roll to two ends of the roof 16, and slide down from the front beam 7 or the shield plate 3, so that the falling rocks on the roof 16 can be cleaned conveniently, one end of the front beam 7 and one end of the roof 16 are hinged, the other end of the shield plate 3 and the other end of the roof 16 are hinged, so that the angle between the roof 16 and the shield plate 3 or the angle between the roof 16 and the front beam 7 can be adjusted conveniently, and the falling rocks on the roof 16 can be treated conveniently.

Example 2

The difference between this example and example 1 is: at least one reinforcing plate 15 is fixedly arranged on the top plate 16, the top plate 16 is divided into at least two protective grooves by the reinforcing plate 15, a plurality of groups of sliding grooves 11 are formed in the inner wall of each protective groove, one group of sliding grooves 11 consists of two opposite sliding grooves 11, a plurality of protective rollers 1 are arranged in each protective groove, one protective roller 1 corresponds to one group of sliding grooves 11, and two ends of a roller shaft 12 on each protective roller 1 are respectively arranged in one group of sliding grooves 11; when the protective roller is used, on one hand, the reinforcing plate 15 and the plurality of springs 10 on the top plate 16 are matched with the sliding groove 11, so that the buffering of the top plate 16 on the impact force of falling rocks can be increased, the protective effect is improved, on the other hand, the length of a single protective roller 1 is reduced, when the protective roller 1 is damaged and needs to be replaced, the damaged protective roller 1 can be replaced independently, and materials are saved;

the design that the fixing nails are arranged at the bottom of the base 5 can more stably fix the base 5 on the ground, so that the base 5 is prevented from sliding when falling rocks occur;

the design that a protective net is arranged at one end of the front beam 7 can prevent falling rocks from rolling to the vicinity of the bottom plate when falling rocks fall from one end of the front beam 7, so that the bottom plate shakes;

reach and to carry out multilayer shock attenuation buffering when falling the stone to this avoids hydraulic stem 4 to produce because of instantaneous impulsive force and damages, and is provided with 16 protective structure of roller formula roof, can utilize the rotation to absorb the buffering, reduces the purpose of 16 protection departments of roof harm probability.

The above embodiments are the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention are intended to be covered by the scope of the invention.

It should also be noted that, unless otherwise specifically stated or limited, the terms "disposed on," "mounted on," "connected to" and "connected to" are to be construed broadly and may include, for example, a fixed connection such as a crimped connection, a riveted connection, a pinned connection, an adhesive connection, a welded connection, a removable connection such as a threaded connection, a snap connection, a hinged connection, an integral connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A coal mining tunneling shield structure is characterized in that: the device comprises protective rollers, vertical plates, a shield plate, a hydraulic rod, a base, a connecting seat, a front beam, a support rod, a support plate, a spring, sliding chutes, a roller shaft, a buffer rod, a support rod and a top plate, wherein the top plate is fixedly arranged between the bottoms of the two vertical plates, a plurality of corresponding sliding chutes are respectively arranged on the vertical plates, the sliding chutes on the vertical plates are obliquely arranged, a plurality of protective rollers are arranged between the two vertical plates, two ends of the roller shaft of the protective roller between the two vertical plates are correspondingly arranged in the sliding chutes on the two vertical plates, the front beam is hinged on one side of the top plate, the shield plate is hinged on the other side of the top plate, two sides of the shield plate are bent upwards to form a fixed plate, a plurality of corresponding sliding chutes are respectively arranged on the fixed plate, the sliding chutes on the fixed plate are obliquely arranged, a plurality of protective rollers are arranged between the two fixed, at least one spring is fixedly arranged between the bottom of the roller shaft and the chute of the protective roller, supporting rods are fixedly arranged at the bottom of the top plate close to the positions of the two sides respectively, supporting plates are arranged between the two supporting rods, a row of chutes which are penetrated by the level are formed in the supporting plates, buffering rods are arranged in the chutes in a penetrating mode and penetrate through the chutes, two ends of each buffering rod are fixedly connected with the two supporting rods respectively, at least one spring is fixed between the buffering rods and the bottoms of the chutes, the spring is at least three, the movable ends of the hydraulic rods are connected with the bottoms of the supporting plates, the base is connected with the fixed ends of the hydraulic rods, a connecting seat is fixedly arranged.

2. The coal mining tunneling shield structure according to claim 1, wherein at least one reinforcing plate is fixed on the top plate, the reinforcing plate divides the top plate into at least two protective grooves, a plurality of sets of sliding grooves are formed in the inner walls of the protective grooves, one set of sliding grooves is composed of two opposite sliding grooves, a plurality of protective rollers are arranged in the protective grooves, one protective roller corresponds to one set of sliding grooves, and two ends of a roller shaft on each protective roller are respectively arranged in one set of sliding grooves.

3. A coal mining excavation shield structure according to claim 1, wherein the fixing plate is of trapezoidal configuration in cross-section.

4. A coal mining excavation shield according to claim 1, wherein the risers are of trapezoidal cross-section.

5. A coal mining tunnelling shield structure as claimed in claim 1, wherein a protective mesh is provided at one end of the front beam.