CN112195995B - Milling and digging machine grooving early warning device - Google Patents
Milling and digging machine grooving early warning device Download PDFInfo
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- CN112195995B CN112195995B CN202010879987.4A CN202010879987A CN112195995B CN 112195995 B CN112195995 B CN 112195995B CN 202010879987 A CN202010879987 A CN 202010879987A CN 112195995 B CN112195995 B CN 112195995B
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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
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
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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
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
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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
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
- E02F5/145—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids control and indicating devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The invention discloses a milling and excavating machine grooving early warning device, which comprises: the milling and digging head comprises a milling and digging head and a roller shaft in transmission connection with one end of the milling and digging head, the other end of the milling and digging head is connected with the mounting end of an excavator accessory, an adjusting support is arranged on the outer round surface of the milling and digging head, a distance sensor is arranged on the adjusting support and used for detecting the distance between the distance sensor and a forming plate preset on the surface of core soil, a detected distance signal is sent to a groove depth monitor, and the groove depth monitor receives the early warning action after the distance signal. The invention can remind an operator when milling and excavating the groove to different groove depths, thereby avoiding the over-excavation and under-excavation phenomena.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a milling and excavating machine grooving early warning device.
Background
The slope protection form of the conventional high-speed railway subgrade is various, wherein the arch-shaped reinforced concrete framework, the reserved core soil and the vegetation protection form one of the common protection forms. When the vertical foundation trench of the arched framework is constructed, an operator generally excavates the arc trench by operating an excavator accessory with a milling and excavating machine, but the operator excavates the arc trench only by experience in the actual excavating process, so that the arc trench excavated by milling is irregular in moment and inconsistent in standard, and the phenomena of over-excavation or under-excavation often occur.
Disclosure of Invention
The invention aims to solve the problems and provides a device capable of detecting and reminding an operator of the distance between the groove depth and the standard groove depth difference in the groove digging construction process of a milling and digging machine in real time.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a mill machine trenching early warning device, includes: milling and digging head, mill and dig head including mill dig head and with the roller that the one end transmission of milling dig head is connected, mill the other end of digging head and the installation end of excavator accessory link to each other its characterized in that: milling and planning head excircle on the face be equipped with the adjustment support facial make-up is equipped with distance sensor, distance sensor includes first proximity switch and the second proximity switch that is connected and the induction distance is different with the groove depth watch-dog electricity, first proximity switch with the second proximity switch is used for detecting its distance to the shaping plate of presetting at core soil surface, switches on in proper order when reaching its induction distance, makes it with the groove depth watch-dog forms electric circuit, so that the groove depth watch-dog receives make the early warning action behind the distance signal.
Optionally, the groove depth monitor comprises a wiring board, a flash lamp and a buzzer which are electrically connected with the first proximity switch and the second proximity switch are arranged on the wiring board, and the flash lamp and the buzzer are powered to work after the first proximity switch or the second proximity switch is switched on.
Optionally, the adjustment support includes a spout, a diaphragm and a riser, the spout set firmly in on the round face of milling head a plurality of fixed orificess have been seted up in the spout, the riser inlays to be located in the spout and through with the bolt that the fixed orifices cooperation was used will the riser is fixed, the diaphragm with the riser links firmly set up the confession on the diaphragm first proximity switch with the through-hole of second proximity switch holding, first proximity switch with second proximity switch's response terminal surface is not more than the lower surface of diaphragm.
Optionally, the outer walls of the first proximity switch and the second proximity switch are sleeved with insulating thread sleeves, the length of each insulating thread sleeve exceeds the length of the first proximity switch or the second proximity switch, and the first proximity switch and the second proximity switch are fixed on the transverse plate through a spare cap.
Optionally, the roller shaft is arranged transversely or longitudinally, a helical blade and a plurality of drill bits used for excavating the groove are arranged on the outer circular surface of the roller shaft, and the drill bits are arranged on the blade side surface of the helical blade at intervals.
Optionally, the number of the adjusting supports and the number of the distance sensors are two, and the adjusting supports and the distance sensors are respectively arranged on the left side and the right side of the milling and planing head.
Optionally, when the roller shaft is transversely arranged, the distance from the distance sensor to the milling head is greater than the radius length of the roller shaft, and when the roller shaft is longitudinally arranged, the distance from the distance sensor to the milling head is greater than the axial length of the roller shaft.
Optionally, the forming plate is two vertical or arc-shaped metal plates.
Optionally, when the forming plates are arc-shaped, the radius lengths of the two forming plates are the same or different.
Compared with the prior art, the invention has the technical progress that:
the invention can realize the function of indexing early warning through the distance sensor, for example, when the height is 40mm, an operator is reminded that the depth is close to the elevation quickly, the operation is light and slow, meanwhile, the forming plate plays a role in forming, the radian of the arc-shaped arch framework is difficult to master, and the standard arch framework can be well formed under the action of the forming plate. Because the limiting displacement between diaphragm and the profiled sheeting, when the degree of depth reached standard, the diaphragm was blockked by the profiled sheeting, prevented to surpass to dig. Therefore, the invention has simple installation and adjustable detection position, can automatically guide and remind the operation of operators, reduces the operation difficulty of the operators, ensures easy and simple operation, is easy to control the slotting depth, has standard and flat slotting depth and regular slotting depth, obviously improves the quality, ensures that drivers are not easy to fatigue by reminding at different heights, and greatly improves the production efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of an adjusting bracket according to the present invention.
Fig. 3 is a wiring diagram of a proximity switch and a slot depth monitor of the present invention.
In the figure:
1-milling and planing head, 2-roller shaft, 3-adjusting bracket, 4-distance sensor, 5-forming plate, 6-groove depth monitor, 7-flash lamp, 8-buzzer, 9-chute, 10-transverse plate, 11-vertical plate, 12-fixing hole, 13-bolt, 14-through hole and 15-spare cap.
Detailed Description
The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, the invention discloses a milling and digging machine grooving early warning device, which comprises a milling and digging head, wherein the milling and digging head comprises a milling and digging head 1 and a roller shaft 2 in transmission connection with one end of the milling and digging head 1, the milling and digging head 1 is a hollow shell, a transmission mechanism for driving the roller shaft 2 is arranged in the milling and digging head 1, and the transmission mechanism is connected with a power part of an excavator; the spiral blade and a plurality of drill bits used for excavating grooves are arranged on the outer circular surface of the roll shaft 2, the drill bits are arranged on the blade side surfaces of the spiral blade at intervals, and the specific structures of the drill bits and the spiral blade can participate in Chinese patent CN 201920248784. The milling head is characterized in that an adjusting support 3 is arranged on the outer circular surface of the milling head 1, a distance sensor 4 is arranged on the adjusting support 3, the distance sensor 4 is used for detecting the distance between the distance sensor and a forming plate 5 preset on the surface of core soil, a detected distance signal is sent to a groove depth monitor 6, and the groove depth monitor 6 gives an early warning action after receiving the distance signal. In this embodiment, the number of the adjusting bracket 3 and the distance sensor 4 is two, and the adjusting bracket and the distance sensor are respectively arranged on the left side and the right side of the milling head 1, when the roller shaft 2 is transversely arranged, the distance from the distance sensor 4 to the milling head 1 is greater than the radius length of the roller shaft 2, and when the roller shaft 2 is longitudinally arranged, the distance from the distance sensor 4 to the milling head 1 is greater than the axial length of the roller shaft 2.
The excavator is driven to operating personnel for the roller 2 that mills the skeleton vertical slot transversely runs through and mills planer head 1 setting, and its cooperation two vertical profiled sheeting 5 uses, and the roller 2 that is used for milling the skeleton arc wall vertically sets up in milling planer head 1 end, and its cooperation two curved profiled sheeting 5 uses, and two arc profiled sheeting 5's radius length is the same or different, and two arc profiled sheeting 5's radius length is different in this embodiment, is 1.5m and 2.2m respectively. Preset forming plate 5 on the core soil surface, drive milling head 1 is between forming plate 5, then vertical slope face is milled downwards and is dug and mill downwards along slope face, when milling head 1 descends, distance sensor 4 detects its distance to forming plate 5, and the distance signal that detects sends to groove depth watch-dog 6, and groove depth watch-dog 6 makes the early warning action after receiving the distance signal, reminds operating personnel the groove depth of this moment for what.
Wherein, distance sensor 4 includes first proximity switch and the second proximity switch that is connected and the induction distance is different with groove depth watch-dog 6 electricity, first proximity switch and second proximity switch put through in proper order when reaching its induction distance, make it form electric loop with groove depth watch-dog 6, groove depth watch-dog 6 includes the wiring board, the wiring board facial make-up is equipped with flash light 7 and bee calling organ 8 of being connected with first proximity switch and second proximity switch electricity, make flash light 7 and bee calling organ 8 work that gets electric after first proximity switch or the switch-on of second proximity switch.
As shown in fig. 2, the adjusting bracket 3 includes a sliding groove 9, a transverse plate 10 and a vertical plate 11, the sliding groove 9 is fixedly disposed on the outer circumferential surface of the milling head 1, a plurality of fixing holes 12 are formed in the sliding groove 9, the vertical plate 11 is embedded in the sliding groove 9 and fixed to the vertical plate 11 through bolts 13 used in cooperation with the fixing holes 12, the transverse plate 10 is fixedly connected with the vertical plate 11, through holes 14 for accommodating the first proximity switch and the second proximity switch are formed in the transverse plate 10, and the sensing end surfaces of the first proximity switch and the second proximity switch do not exceed the lower surface of the transverse plate 10. The cover is equipped with insulating silk cover on first proximity switch and second proximity switch's outer wall, and the length of insulating silk cover surpasss first proximity switch or second proximity switch's length, and first proximity switch and second proximity switch pass through and are equipped with cap 15 and fix on diaphragm 10.
The specific application engineering of the invention is as follows:
the milling and excavating machine is characterized in that the groove depth of the milling and excavating machine is 3 specification sizes, 400mm, 500mm and 600mm, taking the 400mm depth as an example, firstly, the length of 400mm is measured upwards from the lower end part of the milling head 1, and in addition, the thickness of the forming plate 5 is 50mm, namely, a scale line of the 400mm groove depth is made at a position 450mm upwards from the lower end part of the milling head 1, a transverse plate 10 and a vertical plate 11 are fixed according to the groove depth standard, two proximity switches are arranged on the transverse plate 10 in parallel, including a first proximity switch and a second proximity switch, wherein the first proximity switch and the second proximity switch respectively select normally open proximity switches with models of LJA30M-40N1(1-40mm) and LJA30M-40N1(1-10mm), the sensing distances of the first proximity switch and the second proximity switch are respectively 40mm and 10mm, and power supply and control circuits of the two proximity switches are connected to a groove depth controller, the groove depth controller is arranged right ahead of a driver operating handle of the cab, so that the monitoring and the operation of a driver are facilitated.
When the transverse plate 10 moves to a position 40mm away from the end face of the forming plate 5, namely the distance from the sensing surface of the first proximity switch to the end face of the forming plate 5 is 40mm, the first proximity switch is connected with a buzzer 8 on the groove depth monitor 6 to give an early warning and flash a green flash lamp 7 to give a prompt to remind an operator that the groove depth is 360mm, and the operator only needs to pay attention to the maintenance of an operation key according to the elevation of 400mm and dig down slowly; the milling and digging head continues to mill and dig downwards slowly, when the transverse plate 10 is connected to the position 10mm away from the end face of the forming plate 5, namely the distance from the sensing surface of the second proximity switch to the end face of the forming plate 5 is 10mm, the circuit of the second proximity switch is connected with a buzzer 8 on the groove depth monitor 6 for early warning and flashing a red flash lamp 7 for prompting, an operation driver is reminded that the milling and digging head is in place for digging depth, the milling and digging head is prevented from underdigging, and at the moment, the operation driver can translate the milling and digging groove left and right along the track of the forming plate 5 until the milling and digging are finished; if the operator continues to mill the groove downwards at the moment, the groove needs to be over-dug, so when the milling head mills downwards again from the position, the transverse plate 10 is blocked by the forming plate 5 and cannot be milled downwards any more, and over-digging of the milling head is prevented.
The vertical plate 11 and the transverse plate 10 of the adjusting support 3 are L-shaped plates, the vertical plate 11 can slide and be fixed in the sliding groove 9 up and down to adjust and detect the position of the groove depth scale, two fixing holes 12 which are 100mm apart are arranged in the sliding groove 9, for example, the vertical plate 11 is fixed with a first fixing hole 12 by using an M30 bolt 13, the lower end surface of the transverse plate 10 is flush with a 400mm depth scale line, and the position is used for detecting the position of the 400mm groove depth scale; for example, the vertical plate 11 is fixed with the second fixing hole 12 by using an M30 bolt 13, the lower end surface of the transverse plate 10 is flush with a 500mm depth scale line, and the position is used for detecting a 500mm groove depth scale position; if the transverse plate 10 is reversely arranged in the sliding groove 9 at the second fixing hole 12, the position of the groove depth detected by the lower plane of the transverse plate 10 is the corresponding position of the groove depth scale of 600mm, namely, the L-shaped plates are respectively normally arranged and reversely arranged at the second fixing hole 12, so that the positions of the two groove depth scales can be detected, the length of the vertical plate 11 is reduced, and the vertical plate 11 is prevented from colliding with a hydraulic control valve on the milling and excavating head to generate interference.
When the first or second proximity switch is installed, the proximity switch is installed in an insulating thread sleeve, the insulating thread sleeve can be a nylon thread sleeve, the distance measuring end face of the proximity switch is recessed into the end face of the nylon thread sleeve by 2mm, and the proximity switch is firmly fixed by a spare cap 15; then, the nylon wire sleeve is arranged in the through hole 14 on the transverse plate 10, when the L-shaped plate is reversely arranged, the nylon wire sleeve is also arranged on the upward plane of the transverse plate 10, the proximity switch is separated from the transverse plate 10 by the nylon wire sleeve, wherein the diameter of the nylon wire sleeve is larger than the transverse induction distance measurement distance of the end surface of the proximity switch, so that the induction interference of a baffle plate on the proximity switch is avoided, the induction end surface of the proximity switch can be 2mm away from the lower end surface of the transverse plate 10, the proximity switch is prevented from being damaged when the transverse plate 10 contacts the surface of the forming plate 5, the nylon wire sleeve is made of an insulating material, static electricity, weak points or residual current and the like transmitted by an excavator, a milling and excavating machine, the transverse plate 10 and the like can be isolated, and the induction effect of the proximity switch is prevented from being interfered;
the groove depth monitor 6 is divided into a left row control area and a right row control area, the left row control display corresponds to the milling and excavating machine left distance sensor 4 for detecting specific conditions, and the right row control display also corresponds to the milling and excavating machine left distance sensor 4 for detecting specific conditions. The milling head comprises two green light flashlamps 7 and two buzzers 8 which are respectively connected with first proximity switches at the left side and the right side of the milling head 1, two red light flashlamps 7 and two buzzers 8 which are respectively connected with second proximity switches at the left side and the right side of the milling head 1, and four control button switches, wherein a specific wiring diagram is shown in fig. 3.
For example: the left green light flash lamp 7 and the left buzzer 8 are connected with a first proximity switch, when the depth difference of the left transverse plate 10 from the scale groove is 40mm, the first proximity switch is switched on, the buzzer 8 gives an early warning, the green flash lamp 7 flashes, and at the moment, a button switch can be pressed down to turn off the green light flash lamp 7 and the buzzer 8; when the depth of the left transverse plate 10 is 10mm from the groove of the scale, the second proximity switch is switched on, the buzzer 8 gives an early warning, the red flash lamp 7 flashes, after the buzzer 8 and the red flash lamp 7 give an early warning, the milling and excavating machine takes the groove depth as a standard, and the button switch can be pressed down to turn off the red flash lamp 7 and the buzzer 8 in the process of sliding along the end face of the forming plate 5 by swinging the milling and excavating machine; when the groove depth needs to be monitored again, the button switch can be pressed at any time, so that the red light flash lamp 7 and the buzzer 8 continue to work. The working principle of the monitoring panel on the right row is the same as that of the monitoring panel on the left row.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously positioned and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A milling and excavating machine grooving early warning device comprises: the milling and digging head comprises a milling and digging head and a roller shaft in transmission connection with one end of the milling and digging head, the other end of the milling and digging head is connected with the mounting end of an excavator accessory, and the milling and digging head is characterized in that: the milling and planing head comprises a milling and planing head, and is characterized in that an adjusting support is arranged on the outer circular surface of the milling and planing head, a distance sensor is arranged on the adjusting support, the distance sensor comprises a first proximity switch and a second proximity switch which are electrically connected with a groove depth monitor and have different sensing distances, the first proximity switch and the second proximity switch are used for detecting the distance between the first proximity switch and the second proximity switch and a forming plate preset on the surface of core soil, and the first proximity switch and the second proximity switch are sequentially connected when the sensing distance is reached so as to form an electric loop with the groove depth monitor, so that the groove depth monitor can perform early warning action after receiving the distance signal;
the groove depth monitor comprises a wiring board, a flash lamp and a buzzer which are electrically connected with the first proximity switch and the second proximity switch are arranged on the wiring board, and the flash lamp and the buzzer are powered to work after the first proximity switch or the second proximity switch is switched on;
the adjusting support comprises a sliding groove, a transverse plate and a vertical plate, the sliding groove is fixedly arranged on the outer circular surface of the milling head, a plurality of fixing holes are formed in the sliding groove, the vertical plate is embedded in the sliding groove and is fixed by bolts matched with the fixing holes, the transverse plate is fixedly connected with the vertical plate, through holes for accommodating the first proximity switch and the second proximity switch are formed in the transverse plate, and the induction end surfaces of the first proximity switch and the second proximity switch are not more than the lower surface of the transverse plate;
the outer walls of the first proximity switch and the second proximity switch are sleeved with insulating wire sleeves, the length of each insulating wire sleeve exceeds the length of the first proximity switch or the second proximity switch, and the first proximity switch and the second proximity switch are fixed on the transverse plate through standby caps.
2. The milling and excavating machine grooving early warning device according to claim 1, wherein: the roller is horizontal or vertical setting be equipped with helical blade and a plurality of drill bit that is used for excavating the slot on the excircle face of roller, the drill bit interval sets up in helical blade's blade side.
3. The milling and excavating machine grooving early warning device according to claim 2, wherein: the number of the adjusting supports and the distance sensors is two, and the adjusting supports and the distance sensors are respectively arranged on the left side and the right side of the milling and planing head.
4. The milling and excavating machine grooving early warning device according to claim 3, wherein: when the roller shaft is transversely arranged, the distance from the distance sensor to the milling head is greater than the radius length of the roller shaft, and when the roller shaft is longitudinally arranged, the distance from the distance sensor to the milling head is greater than the axial length of the roller shaft.
5. The milling and excavating machine grooving early warning device according to any one of claims 1 to 4, wherein: the forming plates are two vertical or arc-shaped metal plates.
6. The milling and excavating machine grooving early warning device according to claim 5, wherein: when the forming plates are arc-shaped, the radius lengths of the two forming plates are the same or different.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879987.4A CN112195995B (en) | 2020-08-27 | 2020-08-27 | Milling and digging machine grooving early warning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010879987.4A CN112195995B (en) | 2020-08-27 | 2020-08-27 | Milling and digging machine grooving early warning device |
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| CN112195995A CN112195995A (en) | 2021-01-08 |
| CN112195995B true CN112195995B (en) | 2022-05-20 |
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| CN114837493B (en) * | 2022-07-05 | 2022-10-04 | 济南达宝文汽车设备工程有限公司 | Protective device and method for automatic station guardrail fork knife edge in production workshop |
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| DE29705074U1 (en) * | 1997-03-05 | 1998-07-09 | Hirdes Gmbh Heinrich | Device for deepening waterways |
| CN101295424A (en) * | 2008-06-12 | 2008-10-29 | 武汉京冶地基基础工程有限责任公司 | Alarming method and device for preventing drilling rod-dropping accident of rotary digging drill rig |
| CN209686488U (en) * | 2019-02-27 | 2019-11-26 | 中铁三局集团有限公司 | Head is dug in milling for excavating side slope groove |
| CN111119204A (en) * | 2019-12-25 | 2020-05-08 | 中国路桥集团西安实业发展有限公司 | Construction method of concrete arch framework revetment |
| CN213572108U (en) * | 2020-08-27 | 2021-06-29 | 中铁三局集团有限公司 | Milling and excavating machine grooving depth early warning device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8875420B2 (en) * | 2009-09-04 | 2014-11-04 | Philip Paull | Apparatus for adapting a hoe bucket for depth control |
| CN108755810A (en) * | 2018-04-09 | 2018-11-06 | 成都利拓重工机械有限公司 | The milling cut construction method of device is dug in a kind of pipe capsule construction milling |
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2020
- 2020-08-27 CN CN202010879987.4A patent/CN112195995B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29705074U1 (en) * | 1997-03-05 | 1998-07-09 | Hirdes Gmbh Heinrich | Device for deepening waterways |
| CN101295424A (en) * | 2008-06-12 | 2008-10-29 | 武汉京冶地基基础工程有限责任公司 | Alarming method and device for preventing drilling rod-dropping accident of rotary digging drill rig |
| CN209686488U (en) * | 2019-02-27 | 2019-11-26 | 中铁三局集团有限公司 | Head is dug in milling for excavating side slope groove |
| CN111119204A (en) * | 2019-12-25 | 2020-05-08 | 中国路桥集团西安实业发展有限公司 | Construction method of concrete arch framework revetment |
| CN213572108U (en) * | 2020-08-27 | 2021-06-29 | 中铁三局集团有限公司 | Milling and excavating machine grooving depth early warning device |
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