Auxiliary rock breaking device

Abstract

The utility model discloses an auxiliary rock breaking device, and belongs to the technical field of rock breaking equipment. The auxiliary rock breaking device comprises a cylindrical head screw, the diameter of the head screw is gradually increased from the top end to the bottom end, the outer side of the head screw is sleeved with an expansion body in an attached mode, the expansion body comprises a supporting plate, a through hole is formed in the middle of the supporting plate and used for allowing the head screw to pass through, and a plurality of expansion plates are fixedly arranged on the peripheral side of the head screw in an array mode. The expansion plates are tightly attached to the top screws, the sides, close to the top screws, of the expansion plates are all provided with arc faces matched with the outer sides of the top screws, the sides, attached to the top screws, of the expansion plates are provided with internal thread grooves matched with the top screws, and the bottoms of the top screws are connected with threaded rods. And the weak surrounding rock generates cracks, so that workers can better excavate the weak surrounding rock.

Description

Technical Field

[0001] The utility model relates to the technical field of rock-breaking equipment, in particular to an auxiliary rock-breaking device. Background Art

[0002] When soft surrounding rock is encountered in tunnel excavation, in order to reduce the disturbance to the surrounding rock and maintain the stability of the surrounding rock itself, manual pneumatic picks are usually used for excavation instead of blasting excavation. However, the excavation method of manual pneumatic picks is slow and may take a longer time to complete the excavation work. Therefore, most of the time, mechanical excavation equipment is still used for excavation. However, when mechanical excavation is carried out, it will collide violently with the rock, generating a large vibration force, which will greatly disrupt the internal structure of the soft surrounding rock, reduce its stability, and affect the subsequent construction. Summary of the Invention

[0003] The purpose of the utility model is to overcome the problems in the prior art, and provide an auxiliary rock-breaking device for excavating soft surrounding rock, preventing the internal structure of the soft surrounding rock from being disturbed, and reducing the occurrence of its instability accidents.

[0004] The utility model provides an auxiliary rock-breaking device, including a top head screw. The top head screw is set in a cylindrical shape, and its diameter gradually increases from the top end to the bottom end. An expansion body is sleeved on the outside of the top head screw in a fitting manner. The expansion body includes a support plate, and a through hole is opened in the middle of the support plate for the top head screw to pass through. A plurality of expansion plates are fixedly arranged in an array on the circumferential side of the top head screw, and the expansion plates are in close contact with the top head screw. An arc surface matching the outside of the top head screw is opened on one side of each of the plurality of expansion plates close to the top head screw. An internal thread groove matching the top head screw is arranged on the side of the expansion plate in contact with the top head screw. A threaded rod is connected to the bottom of the top head screw, and a power member for driving the threaded rod to rotate is connected to the tail of the threaded rod.

[0005] Preferably, the side of the expansion plate close to the rock mass is arranged in a convex platform shape.

[0006] Preferably, a plurality of convex blocks are arranged on the outside of the expansion plate.

[0007] Preferably, the plurality of convex blocks are evenly arranged along the vertical direction of the expansion plate.

[0008] Preferably, a plurality of rock-breaking cones are fixedly connected to the side of the plurality of convex blocks close to the rock mass and are arranged horizontally.

[0009] Preferably, a connecting rod is arranged at the bottom of the top head screw, a connecting groove is opened at the end of the threaded rod, and the connecting rod is threadedly connected in the connecting groove.

[0010] Preferably, a circular limiting groove is formed at the bottom of the connecting rod, and a limiting block matching the limiting groove is arranged in the connecting groove.

[0011] Preferably, the top head screw, the expansion body and the threaded rod are all made of metal materials.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: the top head screw and the expansion body of the auxiliary rock breaking device of the present utility model are attached together by rotation. As the top head screw gradually moves, the expansion body will be slowly expanded outwards, so as to break the soft rock through the expansion plate, and the vibration force generated during use is small; by connecting a power component to the tail of the threaded rod, the power component can be set as a motor to increase the excavation speed, so that while increasing the excavation speed, the vibration of the soft surrounding rock can be reduced to prevent the occurrence of instability accidents. The auxiliary rock breaking device of the present utility model is convenient to use and has great application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a schematic diagram of the structure of the top head screw during operation of the present utility model.

[0015] Figure 3 It is a schematic diagram of a partial structure of the expansion body of the present utility model.

[0016] Figure 4 It is a front view structure schematic diagram of the expansion body of the present utility model.

[0017] Figure 5 It is a schematic diagram of the overall structure of the expansion body of the present utility model.

[0018] Figure 6 It is a schematic diagram of the threaded rod structure of the present utility model.

[0019] Figure 7 It is a schematic diagram of the expansion plate structure of the present utility model.

[0020] Figure 8 It is a schematic diagram of the bump and rock breaking cone structure of the present utility model.

[0021] Description of the reference numerals: 1, top head screw; 2, expansion body; 21, expansion plate; 22, support plate; 3, internal thread groove; 4, threaded rod; 5, bump; 6, rock breaking cone; 7, connecting rod; 8, connecting groove; 9, limiting groove; 10, limiting block; 11, through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following is combined with the attached Figures 1 to 8, for the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are a part rather than all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning understood by those with ordinary skills in the field to which the present utility model belongs.

[0023] The "first", "second" and similar terms used in the description and claims of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "inside", "outside", "above", "below", "far", "near", "front", "rear", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. The drawings in the present utility model are not drawn strictly according to the actual scale, and the specific dimensions and quantities of each structure can be determined according to actual needs. The drawings described in the present utility model are only structural schematic diagrams.

[0024] An auxiliary rock-breaking device of the present utility model includes a top-head screw 1. The top-head screw 1 is arranged in a cylindrical shape and its diameter gradually increases from the top end to the bottom end. An expansion body 2 is sleeved on the outside of the top-head screw 1 in a fitting manner. The expansion body 2 includes a support plate 22. A through hole is opened in the middle of the support plate 22 for the top-head screw 1 to pass through. A plurality of expansion plates 21 are fixedly arranged in an array on the circumferential side of the top-head screw 1. The expansion plates 21 are in close contact with the top-head screw 1. Arc surfaces matching the outside of the top-head screw 1 are opened on one side of each of the plurality of expansion plates 21 close to the top-head screw 1. An internal thread groove 3 matching the top-head screw 1 is arranged on the side of the expansion plate 21 in contact with the top-head screw 1. A threaded rod 4 is connected to the bottom of the top-head screw 1, and a power member for driving the threaded rod 4 to rotate is connected to the tail of the threaded rod 4.

[0025] Through the cooperation between the head screw 1 and the expansion plate 21, cracks are generated in the soft surrounding rock, so that the staff can better excavate the soft surrounding rock. First, drill holes matching the expansion body 2 in the soft surrounding rock, then place the expansion body 2 in the drilled holes, and thread the head screw 1 and the threaded rod 4 into the expansion body 2 by rotation. As the head screw 1 gradually moves, the expansion body 2 will be pushed outward, so as to squeeze the inside of the soft surrounding rock through the expansion body 2, causing cracks inside it, which is convenient for the subsequent excavation of the soft surrounding rock. On the one hand, the set head screw 1 and the expansion body 2 are fitted together by rotation. As the head screw 1 gradually moves, the expansion body 2 will be slowly pushed outward, so as to break the soft rock through the expansion plate 21. The vibration force generated during use is small, protecting the internal structure of the soft surrounding rock. On the other hand, by connecting a power component to the tail of the threaded rod 4, the power component can be set as a motor drive, thereby increasing the excavation speed. Thus, while increasing the excavation speed, the damage to the internal structure of the soft surrounding rock can be reduced, and the occurrence of its instability accidents can be lowered. It is convenient to use and has great application value.

[0026] An arc surface is arranged on one side of the expansion plate 21 close to the head screw 1. Since the moving part of the head screw 1 is frustum-shaped, as the head screw 1 moves deeper, the expansion plate 21 will be pushed outward. An internal thread groove 3 matching the head screw 1 is opened on the expansion plate 21, which can make the movement of the head screw 1 more stable, generate a balanced extrusion force on the expansion plate 21 and make it move outward; the power component can be set as a motor. The set motor has a small vibration force, or a corresponding shock-absorbing component is set on the motor. In this new type, a preferred solution is adopted. On the one hand, a motor with a small self-vibration force is used, and on the other hand, a shock-absorbing component is set on the motor, so as to reduce the disturbance to the inside of the soft rock when the motor vibrates, connect to the tail of the threaded rod 4 and drive the threaded rod 4, so that the staff can rotate the threaded rod 4, and the head screw 1, the expansion body 2 and the threaded rod 4 are all made of metal materials to increase the rock-breaking ability of the device.

[0027] Preferably, as Figures 4 to 8 shown, one side of the expansion plate 21 close to the rock mass is arranged in a convex platform shape, several convex blocks 5 are arranged on the outer side of the expansion plate 21, several convex blocks 5 are arranged on the outer side of the expansion plate 21, and several convex blocks 5 are evenly arranged along the vertical direction of the expansion plate 21. Several rock-breaking cones 6 are fixedly connected to one side of several convex blocks 5 close to the rock mass and are arranged horizontally.

[0028] One side of the expansion plate 21 away from is set in a convex platform shape to deepen the crushing ability of the soft surrounding rock. Several convex blocks 5 are arranged on the outer side of the expansion plate 21 to further generate more cracks in the soft surrounding rock, so as to facilitate the staff to excavate the soft surrounding rock.

[0029] Preferably, as Figures 1 to 6As shown, a connecting rod 7 is provided at the bottom of the top screw 1. A circular connecting groove 8 is opened at the end of the threaded rod 4. The connecting rod 7 is threadedly connected to the connecting groove 8. A limiting groove 9 is opened at the bottom of the connecting rod 7. A limiting block 10 matching the limiting groove 9 is arranged in the connecting groove 8. The top screw 1, the expansion body 2 and the threaded rod 4 are all made of metal materials.

[0030] The top screw 1 and the threaded rod 4 are connected by threadedly connecting the provided connecting rod 7 to the limiting groove 9 opened on the threaded rod 4. When the top screw 1 is connected to the threaded rod 4, the provided limiting block 10 will be embedded in the limiting groove 9, further increasing the connection stability between the top screw 1 and the threaded rod 4. After use, each component is separated to facilitate subsequent storage and movement.

[0031] The usage method of the auxiliary rock-breaking device of the present utility model is as follows:

[0032] First, drill a hole matching the expansion body 2 in the soft surrounding rock, and then place the expansion body 2 in the drilled hole.

[0033] Secondly, connect the top screw 1 and the threaded rod 4. After the connection is completed, rotate the top screw 1 and the threaded rod 4 threadedly into the expansion body 2.

[0034] Finally, the staff rotates the provided threaded rod 4 through the motor. At this time, as the threaded rod 4 rotates, it will push the top screw 1. As the top screw 1 gradually moves, it will push the expansion body 2 outwards, thereby squeezing the inside of the soft surrounding rock through the expansion body 2 to generate cracks inside it.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An auxiliary rock-breaking device, characterized in that, Including: A head screw (1), which is set to be cylindrical and has a gradually increasing diameter from the top to the bottom; An expansion body (2), which is fitted and sleeved outside the head screw (1). The expansion body (2) includes a support plate (22). A through hole (11) is provided in the middle of the support plate (22), and the through hole (11) is used for the head screw (1) to pass through. There are several expansion plates (21). The several expansion plates (21) are fixedly arranged in an array along the circumferential side of the head screw (1) on the upper side of the support plate (22). The expansion plates (21) are in close contact with the head screw (1). An arc surface matching the outer side of the head screw (1) is provided on one side of each of the several expansion plates (21) close to the head screw (1). The arc surface is used for the expansion plate (21) to be in close contact with the head screw (1). An internal thread groove matching the head screw (1) is provided on the side of the expansion plate (21) in contact with the head screw (1); A threaded rod (4), which is threadedly connected to the bottom of the head screw (1). A power member for driving the threaded rod (4) to rotate is connected to the tail of the threaded rod (4).

2. The auxiliary rock-breaking device according to claim 1, characterized in that, The side of the expansion plate (21) close to the rock mass is provided in a convex shape.

3. An auxiliary rock-breaking device according to claim 1, characterized in that, Several convex blocks (5) are provided on the side of the expansion plate (21) close to the rock mass.

4. An auxiliary rock-breaking device according to claim 3, characterized in that, The several convex blocks (5) are evenly arranged in the vertical direction of the expansion plate (21).

5. The auxiliary rock-breaking device according to claim 3, wherein, Several rock-breaking cones (6) horizontally arranged are fixedly connected to the side of the several convex blocks (5) close to the rock mass.

6. The auxiliary rock-breaking device according to claim 1, wherein A connecting rod (7) is provided at the bottom of the head screw (1). A connecting groove (8) is provided at the end of the threaded rod (4). The connecting rod (7) is threadedly connected in the connecting groove (8).

7. The auxiliary rock-breaking device according to claim 6, wherein A circular limiting groove (9) is provided at the bottom of the connecting rod (7). A limiting block (10) matching the limiting groove (9) is provided in the connecting groove (8).

8. An auxiliary rock-breaking device according to claim 1, characterized in that, The head screw (1), the expansion body (2) and the threaded rod (4) are all made of metal materials.

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