CN221256651U - Impact mechanism, dismounting tool and rock drill - Google Patents
Impact mechanism, dismounting tool and rock drill Download PDFInfo
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- CN221256651U CN221256651U CN202323469844.4U CN202323469844U CN221256651U CN 221256651 U CN221256651 U CN 221256651U CN 202323469844 U CN202323469844 U CN 202323469844U CN 221256651 U CN221256651 U CN 221256651U
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- 239000011435 rock Substances 0.000 title claims abstract description 20
- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 230000003116 impacting effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005755 formation reaction Methods 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 8
- 230000002265 prevention Effects 0.000 description 7
- 238000010009 beating Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 244000188472 Ilex paraguariensis Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012791 sliding layer Substances 0.000 description 1
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Abstract
The utility model discloses an impact mechanism, a dismounting tool and a rock drill, which comprises a cylinder body and an impact piston penetrating through the cylinder body, wherein the head end of the impact piston is used for being impacted by a drill shank after the impact piston moves by a hydraulic driving stroke, a first connecting structure used for being connected with the dismounting tool is arranged at the tail end of the impact piston, a first step surface positioned at the head end and a second step surface positioned at the tail end are axially distributed on the impact piston, the radial size of the second step surface is larger than that of the first step surface, a propulsion control oil way is arranged on the impact piston, two ends of the propulsion control oil way are respectively communicated with the second step surface of the impact piston and the tail end surface of the impact piston and are used for being communicated with a high-pressure oil way on the cylinder body when the impact piston moves to a preset position, a tail hole used for being matched with the second step surface is formed in the tail end of the cylinder body, and an end cover is arranged at the tail end cover of the cylinder body.
Description
Technical Field
The utility model relates to the technical field of hydraulic impact devices, in particular to an impact mechanism, a dismounting tool and a rock drill.
Background
At present, a rock drill is a common engineering machine in tunnel construction by a drilling and blasting method. In the construction process, an anchor rod is usually driven into surrounding rock, so that the strength of the surrounding rock is increased, and the risk of tunnel collapse is reduced.
Because the space of the tunnel is limited, the length of the drill rod which can be used by the trolley arm support can be limited when the anchor rod is driven, and the depth of the anchor rod which can be driven is shortened. In the daily maintenance or repair process of the rock drill, if the impact piston is to be disassembled, the parts such as the leading guide and the gear box are to be disassembled first, and the efficiency is low.
For example, patent No.: 202211572500.3 discloses an impact device for a rock drill, comprising a front stop sleeve, a cylinder liner and at least two rear stop sleeves. In the technical scheme, the impact piston and the propelling piston are arranged in a split mode, the overall length is long, a plurality of step surfaces exist, and if the impact piston is to be detached, the front guide, the gear box and other parts are required to be detached, so that the efficiency is low.
Disclosure of utility model
The utility model provides an impact mechanism, a dismounting tool and a rock drill, which are used for solving the technical problems of large workload and low efficiency of dismounting an impact piston in the existing rock drill.
The technical scheme adopted by the utility model is as follows:
the utility model provides an impact mechanism, includes the cylinder body and wears to locate the impact piston of cylinder body, the head end of impact piston is used for the impact piston receives hydraulic drive stroke back and the striking tail striking, the tail end of impact piston is provided with the first connection structure that is used for being connected with extracting tool, the impact piston is provided with along the axial distribution and is located the first step face of head end and the second step face that is located the tail end, the radial dimension of second step face is greater than the radial dimension of first step face, be provided with on the impact piston and impel the control oil circuit, impel the both ends of control oil circuit and communicate respectively to the second step face of impact piston with the tail end terminal surface of impact piston for with high-pressure oil circuit intercommunication on the cylinder body when the impact piston moves to preset position, the tail end of cylinder body is seted up and is used for with the tailhole that the second step face matees, the tail end lid of cylinder body is equipped with the end cover.
As a further improvement of the technical scheme, an idle-beating prevention groove is formed in the inner wall of the cylinder body, a groove is formed between the connecting positions of the first step surface and the second step surface of the impact piston, and the groove and the idle-beating prevention groove form an idle-beating prevention structure.
As a further improvement of the technical scheme, the second step surface and the idle striking prevention groove have a gap of 0.1-0.2mm to form a throttling channel.
As a further improvement of the above technical solution, the impact piston is provided with one or more propulsion control oil passages, and each propulsion control oil passage has an axial distance from an opening on the second step surface of the impact piston.
On the other hand, a disassembling tool is also provided, and is used for disassembling the impact piston, wherein the disassembling tool comprises a pull rod, a first end of the pull rod is provided with a second connecting structure and is used for being in matched connection with the first connecting structure of the impact piston, and a second end of the pull rod is provided with a first limiting structure; the dismounting tool further comprises an impact device arranged on the pull rod and used for impacting the limiting structure to drive the pull rod to move in a direction away from the impact piston.
As a further improvement of the technical scheme, the impact device comprises a throwing hammer sleeved on the pull rod, and a preset distance is reserved between the first limiting structure and the second connecting structure of the pull rod, so that an axial moving space is provided for the throwing hammer.
As a further improvement of the above technical solution, the inner wall of the slinger and/or the outer wall of the pull rod is provided with a sliding structure.
As a further improvement of the above technical solution, the second end of the pull rod is further provided with a holding structure.
As a further improvement of the technical scheme, the first end of the pull rod is provided with a second limiting structure.
In a further aspect, there is provided a rock drill incorporating an impact mechanism as described in any one of the preceding.
The utility model has the following beneficial effects:
This impact mechanism combines the propulsion control oil circuit of impact piston with traditional impact piston, utilize the stroke change of impact piston to make propulsion control oil circuit and the oil circuit opening intercommunication on the cylinder body realize joining in marriage the flow, retrench impact piston overall structure into two step faces, make impact piston overall length shorten, and then shorten rock drill length, increase platform truck drilling depth, reduce spare part, improve the reliability, set up first connection structure at the tail end of impact piston simultaneously, its second step face is greater than first step face, can follow the tail hole and take out, be connected through extracting tool and first connection structure and can dismantle the impact piston by the tail end of cylinder body by the rock drill is quick, improve the dismantlement efficiency by a wide margin.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The utility model will be described in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of the construction of a preferred embodiment of the present utility model;
1. The cylinder block 2, the impact piston 201, the first step surface 202, the groove 203, the second step surface 204, the propulsion control oil passage 205, the first connection structure 3, the dismounting tool 301, the second limit structure 302, the drawbar 303, the slinger 304, the first limit structure.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, a preferred embodiment of the present utility model provides an impact mechanism, comprising a cylinder 1 and an impact piston 2 penetrating the cylinder 1, wherein a head end of the impact piston 2 is used for impacting with a drill shank after the impact piston 2 moves by a hydraulic driving stroke, a first connecting structure 205 used for connecting with a disassembling tool 3 is arranged at a tail end of the impact piston 2, a first step surface 201 positioned at the head end and a second step surface 203 positioned at the tail end are distributed along an axial direction of the impact piston 2, a radial dimension of the second step surface 203 is larger than a radial dimension of the first step surface 201, a propulsion control oil path 204 is arranged on the impact piston 2, two ends of the propulsion control oil path 204 are respectively communicated with the second step surface 203 of the impact piston 2 and the tail end surface of the impact piston 2, and are used for communicating with a high-pressure oil path on the cylinder 1 when the impact piston 2 moves to a preset position, a tail end hole used for matching with the second step surface 203 is arranged at the tail end of the cylinder 1, and a tail end cover of the cylinder 1 is provided with an end cover.
The cylinder 1 is provided with a plurality of high-pressure oil paths and low-pressure oil paths, the high-pressure oil paths act on the tail end of the impact piston 2 and the end surfaces between the second step surface 203 and the first step surface 201, the stroke movement of the impact piston 2 is controlled under the action of area difference, and the propulsion control oil paths 204 are conducted in the stroke, so that the oil pressure distribution is changed;
It can be appreciated that this impact mechanism combines the propulsion control oil circuit 204 of impact piston 2 with traditional impact piston 2, utilize the stroke change of impact piston 2 to make propulsion control oil circuit 204 and the oil circuit opening intercommunication on the cylinder body 1 realize joining in marriage the flow, retrench impact piston 2 overall structure into two step faces, make impact piston 2 overall length shorten, and then shorten rock drill length, increase trolley drilling depth, reduce spare part, improve reliability, set up first connection structure 205 at the tail end of impact piston 2 simultaneously, its second step face 203 is greater than first step face 201, can follow the tail hole and take out, be connected through extracting tool 3 and first connection structure 205 can be by the tail end of cylinder body 1 with impact piston 2 by the quick dismantlement on the rock drill, improve the dismantlement efficiency by a wide margin.
In this embodiment, an idle striking prevention groove is formed in the inner wall of the cylinder 1, a groove 202 is formed between the connection positions of the first step surface 201 and the second step surface 203 of the impact piston 2, the groove 202 and the idle striking prevention groove form an idle striking prevention structure, and breakage of the impact piston 2 caused by overlarge braking force in an idle striking working condition of the rock drill is prevented;
Further, the second step surface 203 and the anti-idle-run groove have a clearance of 0.1-0.2mm to form a throttle passage to prevent the impact piston 2 from seizing.
In this embodiment, the impact piston 2 is provided with one or more propulsion control oil passages 204, and the openings of the propulsion control oil passages 204 on the second step surface 203 of the impact piston 2 have axial spacing, that is, the corresponding oil passage openings are communicated to the tail end of the impact piston 2 through the propulsion control oil passages 204 multiple times in the stroke of the impact piston 2, so as to form multiple buffering or oil pressure distribution adjustment.
On the other hand, the present embodiment further provides a disassembling tool 3 for disassembling the impact piston 2, where the disassembling tool 3 includes a pull rod 302, a first end of the pull rod 302 is provided with a second connecting structure for matching connection with the first connecting structure 205 of the impact piston 2, and a second end of the pull rod 302 is provided with a first limiting structure 304; the disassembling tool 3 further comprises an impact device arranged on the pull rod 302 and used for impacting the first limit structure 304 to drive the pull rod 302 to move away from the impact piston 2;
It should be noted that, the first connection structure 205 is an internal thread disposed at the tail end of the impact piston 2, the second connection structure is an external thread disposed at the first end of the pull rod 302, and when the impact piston 2 needs to be removed, only the end cover of the cylinder 1 needs to be removed, so as to connect the pull rod 302 with the quick-release thread of the impact piston 2;
Specifically, after the pull rod 302 is connected with the impact piston 2, the pull rod 302 is pulled outwards, and the impact piston 2 can be quickly detached from the tail end of the cylinder body 1 by striking the first limiting structure 304 through the impact device, so that the labor intensity is greatly reduced and the working efficiency is greatly improved compared with the existing detaching mode.
The impact device comprises a swinging hammer 303 sleeved on the pull rod 302, and a preset distance is reserved between a first limiting structure 304 and a second connecting structure of the pull rod 302, so that an axial moving space is provided for the swinging hammer 303, namely, the swinging hammer 303 and the pull rod 302 are used as an integral structure component, the swinging hammer 303 is controlled to move on the pull rod 302 more conveniently, the moving direction of the swinging hammer 303 is coaxial with the detaching direction of the impact piston 2, the force application is more standard, and the labor intensity is reduced;
Further, the inner wall of the swing hammer 303 and/or the outer wall of the pull rod 302 are provided with sliding structures, for example, a sliding layer is arranged on the surface, so that the two can move relatively smoothly;
Further, the second end of the pull rod 302 is further provided with a holding structure, the holding structure is used as a handle, so that an operator can hold the pull rod conveniently, and meanwhile force application is facilitated.
In this embodiment, the first end of the pull rod 302 is provided with a second limiting structure 301, and the second limiting structure 301 is a limiting nut, so that the swing hammer 303 can be prevented from sliding out of the first end of the pull rod 302 during transportation, and safety is ensured.
On the other hand, the embodiment also provides a rock drill, and the impact mechanism is applied to the rock drill.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides an impact mechanism, its characterized in that includes cylinder body (1) and wears to locate impact piston (2) of cylinder body (1), the head end of impact piston (2) is used for impact piston (2) receive behind the hydraulic drive stroke with the bore bit striking, the tail end of impact piston (2) be provided with be used for with extracting tool (3) connected first connection structure (205), impact piston (2) are provided with along the axial distribution be located first step face (201) of head end and be located second step face (203) of tail end, the radial dimension of second step face (203) is greater than the radial dimension of first step face (201), be provided with propulsion control oil circuit (204) on impact piston (2), the both ends of propulsion control oil circuit (204) are linked together respectively to second step face (203) of impact piston (2) and the terminal surface of impact piston (2) for with high-pressure oil circuit intercommunication on cylinder body (1) when impact piston (2) moves to predetermineeing the position, tail end (1) are equipped with and are used for tail end face (203) is equipped with end cover (1).
2. Impact mechanism according to claim 1, characterized in that the inner wall of the cylinder (1) is provided with an anti-idle-play groove, the impact piston (2) forming a groove (202) between the connection locations of the first step surface (201) and the second step surface (203), the groove (202) and the anti-idle-play groove constituting an anti-idle-play structure.
3. An impact mechanism according to claim 2, characterized in that the second step surface (203) has a clearance of 0.1-0.2mm with the anti-idle-play groove to constitute a throttle channel.
4. An impact mechanism according to claim 1, characterized in that the impact piston (2) is provided with one or more thrust control oil passages (204), each thrust control oil passage (204) having an axial spacing from an opening in the second step surface (203) of the impact piston (2).
5. A disassembly tool (3), characterized by being used for disassembling an impact piston (2) according to any one of claims 1-4, the disassembly tool (3) comprising a pull rod (302), a first end of the pull rod (302) being provided with a second connection structure for a mating connection with a first connection structure (205) of the impact piston (2), a second end of the pull rod (302) being provided with a first limit structure (304); the dismounting tool (3) further comprises an impact device arranged on the pull rod (302) and used for impacting the first limiting structure (304) so as to drive the pull rod (302) to move in a direction away from the impact piston (2).
6. The dismounting tool (3) according to claim 5, characterized in that the impact device comprises a slinger (303) sleeved on the pull rod (302), wherein a preset distance is provided between a first limit structure (304) and a second connection structure of the pull rod (302) so as to provide an axial movement space for the slinger (303).
7. Disassembly tool (3) according to claim 6, characterized in that the inner wall of the slinger (303) and/or the outer wall of the pull rod (302) are provided with sliding formations.
8. Disassembly tool (3) according to claim 5, characterized in that the second end of the pull rod (302) is further provided with a holding structure.
9. Disassembly tool (3) according to claim 5, characterized in that the first end of the pull rod (302) is provided with a second limit structure (301).
10. A rock drill, characterized by being applied to an impact mechanism as claimed in any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323469844.4U CN221256651U (en) | 2023-12-19 | 2023-12-19 | Impact mechanism, dismounting tool and rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323469844.4U CN221256651U (en) | 2023-12-19 | 2023-12-19 | Impact mechanism, dismounting tool and rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221256651U true CN221256651U (en) | 2024-07-02 |
Family
ID=91626208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323469844.4U Active CN221256651U (en) | 2023-12-19 | 2023-12-19 | Impact mechanism, dismounting tool and rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221256651U (en) |
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2023
- 2023-12-19 CN CN202323469844.4U patent/CN221256651U/en active Active
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