Punched head

Abstract

A drainage groove is formed in the inner cavity wall of an outer cylinder and surrounds the axis of the outer cylinder by a circle, the length of the drainage groove in the axial direction of the outer cylinder is larger than the stroke of a connecting sleeve in the axial direction of the outer cylinder, and a water outlet is formed in a connecting groove. The water outlet is communicated with the connecting groove and the drainage groove, so that cooling water discharged from the rock drill and the buffer structure can enter the drainage groove from the water outlet and finally leaves the drainage groove from the drainage opening to be recycled, and meanwhile, the cooling water can cool the outer ring surface of the connecting sleeve and the outer barrel after entering the drainage groove; through cooperation of the water outlet hole, the drainage groove and the drainage hole, the cooling water in the rock drill and the buffer structure can be efficiently discharged, the flow of the cooling water in the rock drill and the buffer structure is increased, and the safety of the rock drill and the buffer structure during a test is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock drill technology field, concretely is a kind of to be hit. BACKGROUND

[0002] At present, rock drill is a kind of commonly used engineering machinery in drilling and blasting method tunnel construction construction.Due to the cost of long time test to rock drill performance by using concrete drilling mode is extremely high, usually set up impact test bench, and the impact energy of buffer structure is absorbed, and each parameter in the impact process is measured.

[0003] In the test process, rock drill and buffer structure can generate a large amount of heat energy, if effective heat dissipation cannot be carried out, the service life of buffer structure will be seriously shortened, cooling water needs to be simultaneously introduced into the front end of rock drill drill bit and the impact surface of buffer structure to dissipate heat;

[0004] And the impact head used in the prior art only has connecting groove for mounting buffer structure and rock drill at both ends, cooling water is discharged from the opening of connecting groove after entering connecting groove, which not only causes waste of cooling water, but also occupies most of the space in connecting groove due to the installation of rock drill or buffer structure, so that the flow of cooling water is small when discharging from connecting groove, thereby affecting the flow of cooling water in buffer structure and rock drill, and the demand of cooling rock drill and buffer structure cannot be met, thereby affecting the service life of rock drill and buffer structure.

[0005] Based on this, the utility model discloses an impact head to solve the above problems. UTILITY MODEL CONTENTS

[0006] To achieve the above object, the utility model provides the following technical scheme: an impact head, including outer tube and the connecting sleeve of the cylindrical shape that is movably arranged in the outer tube, so that the connecting sleeve can move and rotate in the axial direction in the outer tube, connecting groove is set at both ends of the connecting sleeve respectively, for connecting buffer structure and rock drill respectively, drainage groove is set on the inner cavity wall of the outer tube, the drainage groove is around the axis of the outer tube in the inner cavity wall of the outer tube, and the length of the drainage groove in the axial direction of the outer tube is greater than the stroke of the connecting sleeve in the axial direction of the outer tube, drainage hole is set on the outer surface of the outer tube and is communicated with the drainage groove, water outlet hole is set in the inner cavity of the connecting groove at both ends of the connecting sleeve, and the end of the water outlet hole away from the connecting groove is communicated with the outer ring surface of the connecting sleeve, so as to communicate the connecting groove with the drainage groove.

[0007] As a further scheme of the utility model, two drainage grooves are spaced apart along the axial direction of the outer tube in the inner cavity wall of the outer tube, and two connecting grooves are respectively communicated with two drainage grooves.

[0008] As a further scheme of the utility model, a plurality of sealing rings are fixed on the inner wall of the outer cylinder, the sealing rings are used to contact with the outer ring surface of the connecting sleeve to form a seal between the outer ring surface of the connecting sleeve and the inner wall of the outer cylinder, and the plurality of sealing rings are distributed on both ends of the drain groove in the axial direction.

[0009] As a further scheme of the utility model, a plurality of water outlets are arranged in the connecting groove and are arranged in the connecting groove around the axis of the connecting sleeve.

[0010] As a further scheme of the utility model, the outer cylinder comprises a first cylinder piece and a second cylinder piece, the first cylinder piece and the second cylinder piece are fixedly connected through a connecting assembly, and a semicircular recess for accommodating the connecting sleeve is formed on the first cylinder piece and the second cylinder piece.

[0011] As a further scheme of the utility model, a sealing strip is arranged between the first cylinder piece and the second cylinder piece.

[0012] As a further scheme of the utility model, one end or both ends of the connecting sleeve in the axial direction are provided with a connecting piece.

[0013] As a further scheme of the utility model, a support for fixing the outer cylinder is further included, the support comprises a base and a stand column fixed on the base, and the first cylinder piece or the second cylinder piece is fixed on the stand column.

[0014] As a further scheme of the utility model, a fixing ring for fixing the first cylinder piece or the second cylinder piece is arranged on the stand column, and a connecting arm for being inserted into the fixing ring is fixed on the first cylinder piece or the second cylinder piece.

[0015] As a further scheme of the utility model, the drain hole is arranged in the connecting arm.

[0016] The utility model has the following beneficial effects:

[0017] The utility model opens the drain groove on the inner wall of the outer cylinder, the drain groove is around the axis of the outer cylinder on the inner wall of the outer cylinder, the length of the drain groove in the axial direction of the outer cylinder is greater than the stroke of the connecting sleeve in the axial direction of the outer cylinder, a water outlet is arranged in the connecting groove, the water outlet is communicated with the connecting groove and the drain groove, the cooling water discharged from the rock drill and the buffer structure can enter the drain groove through the water outlet, and finally, the cooling water leaves the drain groove through the drain hole for recycling, the outer ring surface of the connecting sleeve and the outer cylinder can be cooled after the cooling water enters the drain groove, the use efficiency of the cooling water can be improved, the cooling water in the rock drill and the buffer structure can be efficiently discharged through the cooperation of the water outlet, the drain groove and the drain hole, the flow of the cooling water in the rock drill and the buffer structure is improved, and the safety of the rock drill and the buffer structure during the test is ensured.

[0018] In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and, to provide no improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a cross-sectional view of the present application.

[0021] Figure 2 It is a side view of the present application.

[0022] Figure 3 It is a top view of the present application.

[0023] LEGEND

[0024] 1, outer cylinder; 11, drain groove; 12, first cylinder piece; 13, second cylinder piece; 14, connecting arm; 2, connecting sleeve; 21, connecting groove; 22, water outlet hole; 23, connecting piece; 3, sealing ring; 4, sealing strip; 51, base; 52, stand; 53, fixing ring. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described in detail below with reference to the drawings, but the present application can be implemented in various different ways as defined and covered below.

[0026] Please refer to Figures 1-3 The present application provides a punch, which comprises an outer cylinder 1 and a connecting sleeve 2 movably arranged in the outer cylinder 1 in a cylindrical shape, so that the connecting sleeve 2 can move and rotate in the axial direction in the outer cylinder 1, connecting grooves 21 are formed at both ends of the connecting sleeve 2 respectively, for connecting a buffer structure and a rock drill respectively, a drain groove 11 is formed on the inner wall of the outer cylinder 1, the drain groove 11 is around the axis of the outer cylinder 1 on the inner wall of the outer cylinder 1, and the length of the drain groove 11 in the axial direction of the outer cylinder 1 is greater than the stroke of the connecting sleeve 2 in the axial direction of the outer cylinder 1, and a drain hole is formed on the outer surface of the outer cylinder 1 and communicates with the drain groove 11; water outlet holes 22 are formed in the inner cavities of the connecting grooves 21 at both ends of the connecting sleeve 2, and the water outlet holes 22 communicate with the outer ring surface of the connecting sleeve 2 at the end away from the connecting grooves 21, so as to communicate the connecting grooves 21 with the drain groove 11.

[0027] The connecting grooves 21, the water outlet holes, the drain groove 11 and the drain hole are sequentially communicated to form a passage for the cooling water to flow.

[0028] In work, the connecting grooves 21 on both sides of the connecting sleeve 2 are connected with the buffer structure and the rock drill respectively. During the performance test of the rock drill, the cooling water in the rock drill will flow out of the rock drill from the part of the rock drill inserted into the connecting groove 21, and then enter the drainage groove 11 of the outer cylinder 1 through the water outlet hole 22. The cooling water in the buffer structure will also flow out of the buffer structure from the part of the buffer structure inserted into the connecting groove 21, and then enter the drainage groove 11 of the outer cylinder 1 through the water outlet hole 22. The surface of the outer cylinder 1 is provided with a drainage hole. The cooling water in the drainage groove 11 can be discharged out of the outer cylinder 1 through the drainage hole and then recycled. After entering the drainage groove 11, the cooling water can cool the outer ring surface of the connecting sleeve 2 and the outer cylinder 1, thereby improving the use efficiency of the cooling water. Through the cooperation of the water outlet hole 22, the drainage groove 11 and the drainage hole, the cooling water in the rock drill and the buffer structure can be efficiently discharged, the flow of the cooling water in the rock drill and the buffer structure is improved, and the safety of the rock drill and the buffer structure during the test is ensured.

[0029] During the test, the rock drill drives the connecting sleeve 2 to rotate around the axis of the connecting sleeve 2 or move along the axis of the connecting sleeve 2. With the movement of the connecting sleeve 2, the position of the water outlet hole 22 provided on the surface of the connecting sleeve 2 also changes, while the outer cylinder 1 remains stationary. In order to ensure that the end of the water outlet hole 22 away from the connecting groove 21 is always connected with the drainage groove 11, the drainage groove 11 is arranged around the axis of the outer cylinder 1 on the inner wall of the outer cylinder 1, and the length of the drainage groove 11 in the axial direction of the outer cylinder 1 is greater than the stroke of the connecting sleeve 2 in the axial direction of the outer cylinder 1. Therefore, no matter how the connecting sleeve 2 moves in the outer cylinder 1, the water outlet hole 22 can always keep the connecting groove 21 connected with the drainage groove 11, and efficient drainage can be maintained during the test.

[0030] As shown in Figure 1 In some examples, two drainage grooves 11 are spaced apart along the axial direction of the outer cylinder 1 on the inner wall of the outer cylinder 1. Two connecting grooves 21 are connected with the two drainage grooves 11 respectively. That is, the cooling water discharged from the buffer structure and the rock drill enters the two drainage grooves 11 respectively. The two streams of cooling water do not affect each other in the outer cylinder 1, preventing the mixing of the cooling water and facilitating the subsequent recycling of the cooling water.

[0031] As shown in Figure 1 The inner wall of the outer cylinder 1 is fixedly provided with a plurality of sealing rings 3. The sealing rings 3 are used to contact the outer ring surface of the connecting sleeve 2 to form a seal between the outer ring surface of the connecting sleeve 2 and the inner wall of the outer cylinder 1. The plurality of sealing rings 3 are distributed at both ends of the drainage groove 11 in the axial direction to seal both ends of the drainage groove 11 in the axial direction of the connecting sleeve 2, preventing the cooling water in the drainage groove 11 from leaking.

[0032] A plurality of water outlet holes 22 are provided in the connecting groove 21. The plurality of water outlet holes 22 are provided in the connecting groove 21 around the axis of the connecting sleeve 2, as shown in Figure 1As shown, in the present example, two water outlets 22 are arranged in the connecting groove 21, and the two water outlets 22 are symmetrically arranged about the axis of the connecting sleeve 2. Thus, during the rotation of the connecting sleeve 2 about its own axis, one water outlet is always located below the axis of the connecting sleeve 2 or both water outlets are located at the central position of the vertical height of the connecting groove 21, so that the drainage pressure of the rock drill and the buffer structure is small, and the position of the water outlet is not high to affect the drainage efficiency of the cooling water. The number of water outlets is not limited in the present application, as long as it is not less than two.

[0033] As shown in the drawings, Figure 2 As shown, the outer cylinder 1 includes a first cylinder sheet 12 and a second cylinder sheet 13, and the first cylinder sheet 12 and the second cylinder sheet 13 are fixedly connected by a connecting assembly. The first cylinder sheet 12 and the second cylinder sheet 13 are both formed with a semicircular groove for accommodating the connecting sleeve 2. The first cylinder sheet 12 and the second cylinder sheet 13 are combined to form the outer cylinder 1, and the first cylinder sheet 12 and the second cylinder sheet 13 can be directly separated to leak out the connecting sleeve 2 in the outer cylinder 1, which is more simple and convenient for maintenance of the ram.

[0034] Specifically, the connecting assembly adopts a bolt, and the first cylinder sheet 12 and the second cylinder sheet 13 are both provided with through holes for the bolt to pass through. The bolt is engaged with a nut after passing through the through holes of the first cylinder sheet 12 and the second cylinder sheet 13, so as to fixedly connect the first cylinder sheet 12 and the second cylinder sheet 13.

[0035] Further, a sealing strip 4 is arranged between the first cylinder sheet 12 and the second cylinder sheet 13 to increase the sealing effect after the first cylinder sheet 12 and the second cylinder sheet 13 are fixed, thereby preventing leakage of the cooling liquid.

[0036] One end or both ends of the connecting sleeve 2 in the axial direction is / are provided with a connecting piece 23, which can adopt a bolt hole or a hook, as shown in the drawings. Figures 1-2 In the present example, the connecting piece 23 is a bolt hole, and when the connecting sleeve 2 is disassembled, a traction device can be threadedly engaged in the bolt hole, and then the connecting sleeve 2 is pulled out of the outer cylinder 1 by the traction device, so as to axially separate the connecting sleeve 2 from the outer cylinder 1, thereby increasing the separation method of the connecting sleeve 2 from the outer cylinder 1.

[0037] As shown in the drawings, Figures 2-3 As shown, the ram further includes a support for fixing the outer cylinder 1. The support includes a base 51 and a stand 52 fixed to the base 51. The first cylinder sheet 12 or the second cylinder sheet 13 is fixed to the stand 52. The ram is fixed by the support, so that the outer cylinder 1 remains in a stable state during the test.

[0038] Specifically, the stand 52 is provided with a fixing ring 53 for fixing the first cylinder sheet 12 or the second cylinder sheet 13. The first cylinder sheet 12 or the second cylinder sheet 13 is fixedly provided with a connecting arm 14 for being inserted into the fixing ring 53, as shown in the drawings. Figures 2-3As shown, the fixing ring 53 is fixed on the stand column 52 by bolts, and the connecting arm 14 is inserted into the fixing ring 53 and then the fixing ring 53 is pressed and fixed by bolts, so that the outer barrel 1 and the stand column 52 are fixed.

[0039] In some examples, the drainage hole is arranged in the connecting arm 14, so that the drainage hole is hidden in the connecting arm 14.

[0040] The preferred embodiments of the present application have been described above by way of example only, not for limitation, and various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A punch, comprising an outer cylinder (1) and a cylindrical connecting sleeve (2) movably arranged in the outer cylinder (1), so that the connecting sleeve (2) can move and rotate in the outer cylinder (1) in the axial direction, and a connecting groove (21) is formed at each end of the connecting sleeve (2) for connecting a buffer structure and a rock drill, characterized in that: a drainage groove (11) is formed on the inner wall of the outer cylinder (1), the drainage groove (11) is arranged around the axis of the outer cylinder (1) on the inner wall of the outer cylinder (1), and the length of the drainage groove (11) in the axial direction of the outer cylinder (1) is greater than the stroke of the connecting sleeve (2) in the axial direction of the outer cylinder (1), and a drainage hole is formed on the outer surface of the outer cylinder (1) and communicates with the drainage groove (11); a water outlet hole (22) is formed in the inner cavity of the connecting groove (21) at each end of the connecting sleeve (2), and the water outlet hole (22) is connected to the outer ring surface of the connecting sleeve (2) at the end away from the connecting groove (21), so as to connect the connecting groove (21) and the drainage groove (11). Two drainage grooves (11) are formed on the inner wall of the outer cylinder (1) and are spaced apart in the axial direction of the outer cylinder (1), and the two connecting grooves (21) are connected to the two drainage grooves (11), respectively. A plurality of sealing rings (3) are fixed on the inner wall of the outer cylinder (1), the sealing rings (3) are used to contact the outer ring surface of the connecting sleeve (2) and form a seal between the outer ring surface of the connecting sleeve (2) and the inner wall of the outer cylinder (1), and the plurality of sealing rings (3) are arranged at both ends in the axial direction of the drainage groove (11).

2. A ram according to claim 1, wherein: A plurality of water outlet holes (22) are formed in the connecting groove (21), and the plurality of water outlet holes (22) are formed in the connecting groove (21) around the axis of the connecting sleeve (2).

3. A ram according to claim 1 wherein: The outer cylinder (1) comprises a first cylinder piece (12) and a second cylinder piece (13), the first cylinder piece (12) and the second cylinder piece (13) are fixedly connected through a connecting assembly, and a semicircular recess for accommodating the connecting sleeve (2) is formed on each of the first cylinder piece (12) and the second cylinder piece (13).

4. A ram according to claim 1 wherein: A sealing strip (4) is arranged between the first cylinder piece (12) and the second cylinder piece (13).

5. A ram according to claim 1 wherein: One end or both ends of the connecting sleeve (2) in the axial direction is provided with a connecting piece (23).

6. A ram according to claim 5, wherein: A support for fixing the outer cylinder (1) is further provided, the support comprises a base (51) and a stand (52) fixedly arranged on the base (51), and the first cylinder piece (12) or the second cylinder piece (13) is fixed on the stand (52).

7. A ram according to claim 1 wherein: A fixing ring (53) for fixing the first cylinder piece (12) or the second cylinder piece (13) is arranged on the stand (52), and a connecting arm (14) for being inserted into the fixing ring (53) is fixedly arranged on the first cylinder piece (12) or the second cylinder piece (13).

8. A ram according to claim 5 wherein: The drainage hole is formed in the connecting arm (14).

9. A ram according to claim 8, wherein: ​ 10. A ram according to claim 9, wherein: ​

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