CN112878408B - Quartering hammer and working vehicle - Google Patents
Quartering hammer and working vehicle Download PDFInfo
- Publication number
- CN112878408B CN112878408B CN202110069357.5A CN202110069357A CN112878408B CN 112878408 B CN112878408 B CN 112878408B CN 202110069357 A CN202110069357 A CN 202110069357A CN 112878408 B CN112878408 B CN 112878408B
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- China
- Prior art keywords
- hammer
- drill rod
- magnetic sensor
- induction magnet
- demolition
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
- E02F5/305—Arrangements for breaking-up hard ground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
Abstract
The invention relates to the technical field of engineering machinery, and provides a breaking hammer and an operation vehicle, wherein the breaking hammer comprises a front hammer body, and a drill rod is arranged in the front hammer body; a magnetic sensor disposed on the front hammer body; an induction magnet disposed at a striking end of the drill rod and proximate to the magnetic sensor, the induction magnet being switchable between a first position in which the induction magnet is positioned below the magnetic sensor and a second position in which the induction magnet is positioned above the magnetic sensor as the drill rod is switched between the first position and the second position; and the controller is respectively connected with the actuator and the magnetic sensor. The invention can effectively prevent the phenomenon of idle driving of the breaking hammer, prolong the service life of the breaking hammer and further reduce the maintenance cost.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a breaking hammer and an operation vehicle.
Background
Background artdemolition hammers are used for breaking hard materials such as rocks, concrete, and hard soil of infrastructure, and are widely used in construction work, and are generally mounted on work vehicles such as excavators and crushers as accessories. The principle is that the drill rod generates reciprocating vibration through the pressure of hydraulic oil of a hydraulic system to beat and break rocks or concrete and the like. However, in the using process, improper operation (such as idle beating) of an operator easily causes damage to the breaking hammer, the service life is shortened, and the equipment maintenance cost is further increased.
Disclosure of Invention
The invention provides a breaking hammer and an operation vehicle, which can effectively prevent the phenomenon of idle driving of the breaking hammer, prolong the service life of the breaking hammer and further reduce the maintenance cost.
The present invention provides a breaking hammer, comprising: the drill rod is arranged in the front hammer body; a magnetic sensor disposed on the front hammer body; an induction magnet disposed at a striking end of the drill rod and proximate to the magnetic sensor, the induction magnet being switchable between a first position in which the induction magnet is positioned below the magnetic sensor and a second position in which the induction magnet is positioned above the magnetic sensor as the drill rod is switched between the first position and the second position; and the controller is respectively connected with the actuator and the magnetic sensor.
The breaking hammer provided by the invention further comprises a pressure sensor, wherein the pressure sensor is connected with the controller, is arranged in an oil inlet pipeline of the breaking hammer and is used for detecting the continuous working time of the breaking hammer based on a pressure value.
According to the invention, the breaking hammer further comprises a motion detection sensor, the motion detection sensor is connected with the controller and is used for detecting a motion signal of the breaking hammer, and the actuator is used for controlling the breaking operation of the breaking hammer based on the motion signal.
According to the breaking hammer, the magnetic sensor is a Hall sensor.
According to the breaking hammer provided by the invention, a piston is arranged in the front hammer body, the piston is separated from the drill rod at the first position, and the piston is abutted against the drill rod at the second position.
According to the breaking hammer provided by the invention, a bush is arranged between the drill rod and the front hammer body and used for guiding and positioning the drill rod.
According to the demolition hammer of the present invention, the magnetic sensor penetrates the bushing.
According to the breaking hammer provided by the invention, a lock pin is arranged between the drill rod and the front hammer body, and the lock pin is positioned below the bushing.
According to the breaking hammer, the middle of the drill rod is provided with an inwards concave accommodating cavity for accommodating the lock pin.
The invention further provides a working vehicle comprising the breaking hammer.
According to the breaking hammer and the operation vehicle provided by the invention, the induction magnet moves along with the drill rod, when the drill rod naturally falls down due to gravity, the induction magnet is positioned below the magnetic sensor, the magnetic field is unchanged, the electric signal of the magnetic sensor received by the controller is not fluctuated, the controller judges that the situation cannot operate the breaking hammer to work according to the electric signal, and once the breaking hammer works, the idle driving condition can occur; when the drill rod compresses the broken objects, the drill rod moves upwards to drive the induction magnet to move from the lower part to the upper part of the magnetic sensor, the electric signal changes, and the controller judges the situation according to the electric signal to execute the operation of the breaking hammer.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a demolition hammer according to the present invention;
FIG. 2 is a schematic diagram of the operation of the drill rod of the present invention in a natural fall;
FIG. 3 is a schematic diagram of the operation of the drill rod of the present invention during crushing;
reference numerals:
1: a breaking hammer; 101: a drill rod; 102: a front hammer body;
103: a lock pin; 104: a bushing; 105: a piston;
106: an accommodating chamber; 2: an induction magnet; 3: a magnetic sensor;
4: a controller; 5: an actuator; 6: a pressure sensor;
7: and a motion detection sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The structure and operation of the breaking hammer of the present invention will be described with reference to fig. 1-3.
First, describing the basic structure of the breaking hammer, as shown in fig. 1, a piston 105 and a drill rod 101 are arranged in a front hammer body 102 of the breaking hammer 1, the piston 105 is located above the drill rod 101, the piston is driven by hydraulic oil to reciprocate to transmit mechanical energy to the drill rod 101, and the drill rod 101 serves as an actuator to receive the mechanical energy transmitted by the piston 105 to break objects.
Further, a bushing 104 is provided between the drill rod 101 and the front hammer body 102 for guiding and positioning the drill rod 101 and preventing dust from entering the hydraulic system of the breaking hammer 1 and contaminating the hydraulic oil. The relevant principles of the hydraulic system of the breaking hammer 1 are conventional in the art and will not be described in particular here.
A lock pin 103 is further arranged between the drill rod 101 and the front hammer body 102, and the lock pin 103 is located below the bushing 104 and used for fixing the drill rod 101 and limiting the drill rod 101.
Specifically, the middle of the drill rod 101 has an inwardly recessed receiving cavity 106 to facilitate installation of the locking pin 103.
The main structure of the breaking hammer of the present invention, which includes an idle striking prevention system and a continuous striking prevention system, will be described below.
As shown in fig. 1, the air defense system mainly includes a position detection mechanism, a controller 4 and an actuator 5, wherein the position detection mechanism includes a magnetic sensor 3 and an induction magnet 2, a mounting hole is formed on a side wall of a front hammer 102, the magnetic sensor 3 is disposed in the mounting hole of the front hammer 102 and penetrates through a bushing 104 so as to receive a magnetic field change of the induction magnet 2, the induction magnet 2 is disposed at a striking end of a drill rod 101 and is disposed near the magnetic sensor 3, the striking end of the drill rod 101 can be understood as an upper end of the drill rod 101 struck by a piston 105, the induction magnet 2 is located on the same side as the magnetic sensor 3, the induction magnet 2 can be switched between a first position and a second position along with the drill rod 101, in the first position, the induction magnet 2 is located below the magnetic sensor 3, and in the second position, the induction magnet 2 is located above the magnetic sensor 3; the controller 4 is connected to the actuator 5 and the magnetic sensor 3, respectively, and is configured to receive the electric signal from the magnetic sensor 3 and feed the electric signal back to the actuator 5 to control the operation of the breaking hammer 1.
As shown in fig. 2, when the drill rod 101 naturally falls (in the direction indicated by the arrow) due to gravity, the piston 105 is separated from the drill rod 101, the sensing magnet 2 is located below the magnetic sensor 3, the magnetic field is unchanged, the electric signal of the magnetic sensor 3 is not fluctuated, the controller 4 judges that the condition cannot operate the breaking hammer according to the electric signal, once the breaking hammer works, a blank beating condition occurs, the blank beating impact can cause the drill rod 101, the lock pin 103 and the bushing 104 of the breaking hammer 1 to be worn or even damaged, the abrasion and the damage of the bushing 104 can cause the drill rod 101 to shake and increase, and finally, dust is easy to enter the breaking hammer 1, so that the service life of the breaking hammer 1 is influenced.
As shown in FIG. 3, when the drill rod 101 presses the broken object, the drill rod 101 moves upwards (in the direction of arrow) from the natural falling position to the position contacting with the piston 105, and simultaneously drives the induction magnet 2 to move from the lower part to the upper part of the magnetic sensor 3, the electric signal changes, and the controller 4 judges the situation according to the electric signal to execute the breaking operation.
It is to be understood that the specific kind of the magnetic sensor 3 of the present invention is not limited, and in this embodiment, the magnetic sensor 3 of the present invention is preferably a hall sensor.
In some examples, the position detecting mechanism may also be a proximity switch, which is disposed on the front hammer body 102 and is used for detecting the displacement of the drill rod 101, and when the displacement of the drill rod 101 reaches the action distance of the proximity switch, the proximity switch is triggered to act, and the controller receives a trigger signal and feeds the trigger signal back to the actuator to control the breaking hammer to perform the breaking operation, and conversely, when the displacement of the drill rod 101 does not reach the action distance of the proximity switch, it is determined that the breaking hammer 1 does not work. Therefore, when the breaking hammer 1 is idle-driven, that is, when the drill rod 101 naturally falls due to gravity, the distance between the drill rod 101 and the piston 105 is set to be the operating distance of the proximity switch, and when the amount of displacement of the drill rod 101 pressing the broken object to move up reaches the operating distance, the drill rod 101 contacts the piston 105, and the breaking hammer 1 can be operated.
As shown in fig. 1, the continuous striking prevention system of the present invention is described continuously, and the continuous striking prevention system mainly includes a pressure sensor 6, a motion detection sensor 7 and a controller 4, wherein the pressure sensor 6 is connected to the controller 4 and is disposed in an oil inlet pipeline of the breaking hammer 1, and during the breaking operation, a pressure signal in the oil inlet pipeline of the breaking hammer 1 is detected, and under a normal condition, the pressure is gradually reduced as the continuous working time is longer, so that the continuous working time of the breaking hammer 1 can be detected according to the pressure value, and when the continuous working time exceeds a set value, the striking position needs to be changed, and the controller feeds back a signal to an actuator of the breaking hammer to control the breaking hammer to stop working. Due to the fact that the drill rod is heated abnormally due to continuous beating of the breaking hammer, and the deterioration of a lining on the drill rod is aggravated, the drill rod fatigue heating situation can be avoided through the design, the continuous beating of the breaking hammer on hard objects, particularly continuous beating when the hard objects cannot be broken, can be effectively prevented, and the service life of the breaking hammer is prolonged.
It is to be understood that the specific kind of the motion detection sensor 7 of the present invention is not limited as long as it can detect a motion, and may be, for example, an attitude sensor, a pressure sensor, or the like.
In one embodiment, when the work vehicle is an excavator, the pressure sensor is disposed on an actuating mechanism of the excavator, and the actuating mechanism mainly includes a boom cylinder, an arm cylinder, and a swing motor, and detects pressure signals of the cylinders and the swing motor, and determines a corresponding operation of the actuating mechanism based on the pressure signals. Thus, the motion signal may be an orientation data signal of the attitude sensor or a pressure signal of the pressure sensor.
According to the invention, through arranging the continuous striking prevention system, the continuous striking time of the breaking hammer 1 at the same position can be detected, when the striking time exceeds a set value, the striking position is changed, whether related actions are carried out or not is detected, and the breaking hammer 1 works again, so that the continuous striking of the breaking hammer 1 on hard objects can be effectively prevented, and the service life of the breaking hammer is prevented from being influenced.
The invention also provides a working vehicle, the specific type of the working vehicle is not limited, for example, the working vehicle can be a machine such as an excavator, a crusher and the like, and the working vehicle comprises the crushing hammer of the embodiment. The designed idle-striking prevention system of the breaking hammer and the working vehicle is reasonable in structure, convenient to process and high in reliability, the idle-striking phenomenon of the breaking hammer can be effectively controlled, the continuous striking prevention system controls the continuous striking time of the breaking hammer according to the pressure signal, and heating fatigue is reduced. By integrating the two systems, the service life and the working performance of the breaking hammer can be effectively improved, and the maintenance cost of a user is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A demolition hammer, comprising:
the drill rod is arranged in the front hammer body, and a bushing is arranged between the drill rod and the front hammer body and used for guiding and positioning the drill rod;
the magnetic sensor is arranged on the front hammer body and penetrates through the bushing;
an induction magnet disposed at a striking end of the drill rod and proximate to the magnetic sensor, the induction magnet being switchable between a first position in which the induction magnet is positioned below the magnetic sensor and a second position in which the induction magnet is positioned above the magnetic sensor as the drill rod is switched between the first position and the second position;
the controller is respectively connected with the actuator and the magnetic sensor;
when the drill rod naturally falls due to gravity, the induction magnet is positioned below the magnetic sensor, the magnetic field is unchanged, the electric signal of the magnetic sensor is not fluctuated, and the controller judges that the condition can not operate the breaking hammer to work according to the electric signal;
when the drill rod presses the crushed objects, the drill rod moves upwards from a natural falling position and simultaneously drives the induction magnet to move from the lower part to the upper part of the magnetic sensor, the electric signal changes, and the controller judges the situation according to the electric signal and can execute the crushing operation.
2. The demolition hammer of claim 1 further comprising a pressure sensor coupled to the controller and disposed in an oil inlet line of the demolition hammer for detecting a continuous operation time of the demolition hammer based on a pressure value.
3. The demolition hammer of claim 2 further comprising a motion detection sensor coupled to the controller for detecting a motion signal of the demolition hammer, the actuator controlling the demolition operation of the demolition hammer based on the motion signal.
4. The demolition hammer of claim 1 wherein the magnetic sensor is a hall sensor.
5. A demolition hammer as claimed in claim 1 wherein a piston is provided in the front hammer body, the piston being separated from the shank in the first position and abutting the shank in the second position.
6. A demolition hammer as claimed in claim 1 wherein a locking pin is provided between the shank and the front hammer block, the locking pin being located below the bushing.
7. A demolition hammer as claimed in claim 6 wherein the shank has an inwardly recessed receiving cavity in the middle for receiving the locking pin.
8. A work vehicle, characterized in that it comprises a breaking hammer according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069357.5A CN112878408B (en) | 2021-01-19 | 2021-01-19 | Quartering hammer and working vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069357.5A CN112878408B (en) | 2021-01-19 | 2021-01-19 | Quartering hammer and working vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112878408A CN112878408A (en) | 2021-06-01 |
| CN112878408B true CN112878408B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110069357.5A Active CN112878408B (en) | 2021-01-19 | 2021-01-19 | Quartering hammer and working vehicle |
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| CN (1) | CN112878408B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319496A (en) * | 2022-01-04 | 2022-04-12 | 上海三一重机股份有限公司 | Working machine, hydraulic control system, and control method for breaking hammer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100675586B1 (en) * | 2005-07-22 | 2007-01-30 | 대모 엔지니어링 주식회사 | Oil hydraulic braker |
| CN204080903U (en) * | 2014-09-01 | 2015-01-07 | 潍坊天瑞重工凿岩机械有限公司 | A kind of hydraulic breaking hammer |
| CN108487032B (en) * | 2016-05-31 | 2020-04-28 | 海门黄海创业园服务有限公司 | Drill rod displacement trigger mechanism |
| CN106012787B (en) * | 2016-05-31 | 2017-12-19 | 福州麦辽自动化设备有限公司 | A kind of drill steel based on hydraulic valve control triggers quartering hammer |
| JP7282608B2 (en) * | 2018-09-10 | 2023-05-29 | 株式会社マキタ | impact tool |
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| CN112878408A (en) | 2021-06-01 |
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