CN113941467B - Spraying device for telescopic boom and working machine - Google Patents
Spraying device for telescopic boom and working machine Download PDFInfo
- Publication number
- CN113941467B CN113941467B CN202111165680.9A CN202111165680A CN113941467B CN 113941467 B CN113941467 B CN 113941467B CN 202111165680 A CN202111165680 A CN 202111165680A CN 113941467 B CN113941467 B CN 113941467B
- Authority
- CN
- China
- Prior art keywords
- hole
- valve
- telescopic
- spraying
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0278—Arrangement or mounting of spray heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
- B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
Landscapes
- Catching Or Destruction (AREA)
- Spray Control Apparatus (AREA)
Abstract
According to the spraying device for the telescopic arm, the group of spraying components and the control valve are arranged on each group of telescopic mechanisms, so that the front spraying component can be used for spraying the adjacent and rear group of telescopic mechanisms. The plurality of control valves in series can be connected or disconnected with the movement of the arm section, and only the control valve at the rearmost end of the plurality of control valves in series can be ensured to be communicated with the spraying assembly. Therefore, the control valves are connected in series to replace a grease conveying pipe in the prior art to convey spraying materials for the spraying assembly, and the problems in the prior art are solved. The working machine provided by the invention is provided with the spraying device, so that a long-distance grease conveying pipe is not required to be connected with the spraying assembly.
Description
Technical Field
The invention relates to the technical field of material spraying, in particular to a spraying device for a telescopic boom and an operation machine.
Background
A working machine provided with a telescopic boom, such as a crane, is indispensable mechanical equipment for construction of infrastructure, wind power, nuclear power, and the like, and particularly a wheeled crane is rapidly developed by virtue of excellent off-road performance and working performance. In a crane which is used for hoisting operation all the year round, lubricating oil on a crane boom falls off due to frequent weather exposure in the process of fully extending the crane boom, the lubricating effect between the crane booms is seriously influenced, the abrasion of a sliding block between the arms is abnormal, the crane boom stretches out and draws back abnormal sound, the paint on the outer wall is scraped, and the like, so that the lubricating oil is sprayed on the outer wall of the crane boom frequently.
Because the crane arm is too long and needs a wide field to meet the requirement, the manual spraying efficiency is extremely low. In order to improve the operating efficiency of the crane and reduce the operating cost, the lubricating oil spraying mode of the outer wall of the crane boom needs to be improved urgently.
In the related technology, a lubricating grease spraying device for the outer wall of a crane boom mainly comprises a spraying unit, a pump, a conveying unit, a lubricating grease storage tank and the like. The telescopic opening at the rear end of each boom section of the crane boom is provided with a spraying unit, each spraying unit is connected with the pump through a grease conveying pipe, the crane boom extends fully to the fully-contracted required grease conveying pipe, the cost is increased, the grease conveying pipe is long, and the grease conveying pipe is difficult to collect and is easy to damage.
Disclosure of Invention
The invention provides a spraying device for a telescopic boom, which is used for solving the defects of increased cost, longer grease conveying pipe and difficult collection caused by the fact that a plurality of spraying components are respectively connected with a pump through the grease conveying pipe in the prior art and realizing the effect of replacing the grease conveying pipe by using a control valve.
The invention provides a spraying device for a telescopic boom, which comprises n groups of telescopic mechanisms, wherein each group of telescopic mechanisms comprises m boom sections, n is more than or equal to 2,m is more than or equal to 1, and the spraying device comprises: each group of telescopic mechanisms is provided with one group of spraying assemblies, and the spraying assemblies are arranged on the arm section which is one section before the corresponding arm section at the rearmost end of each telescopic mechanism; each group of spraying components is correspondingly connected with one control valve, and the control valves are connected to the arm sections at the rearmost ends of the telescopic mechanisms in the front group of the corresponding telescopic mechanisms; the pumping assembly is used for conveying the spray material to the spraying assembly through the control valve; when two adjacent groups of telescopic mechanisms are relatively retracted, the front ends of the control valves of the two corresponding control valves at the rear ends are connected with the rear ends of the control valves at the front ends, and when two adjacent groups of telescopic mechanisms are relatively extended, the two corresponding control valves are disconnected; when the pumping assembly is connected with the first k control valves in series, the control valve at the front end is connected with the pumping assembly, only the kth control valve is communicated with the corresponding spraying assembly and the pumping assembly through the first k-1 control valves, the kth spraying assembly is used for spraying the corresponding telescopic mechanism, wherein k is more than or equal to 1 and less than or equal to n, and m, n and k are integers.
According to the invention, the control valves arranged on the first n-1 telescopic mechanisms comprise: the spray coating device comprises a valve body, a first through hole is formed in the valve body, a second through hole is formed in the outer wall of the valve body, the second through hole is communicated with the inner side and the outer side of the first through hole, and the second through hole is used for being communicated with a spray coating assembly; the valve core is arranged in the first through hole, a first channel is arranged in the valve core, a third through hole is formed in the outer wall of the valve core, and the third through hole is communicated with the inner side and the outer side of the first channel; when the pumping assembly is connected with the first k-1 control valves in series, the valve core of the first k-2 control valves is located at the first position, and the valve core of the k-1 control valve is located at the second position; when the valve core is positioned at the first position, the front end and the rear end of the first through hole are communicated through the first channel, and the second through hole and/or the third through hole are/is closed; when the valve core is located at the second position, the valve body blocks the first channel, the rear end of the first through hole is closed, and the second through hole is communicated with the third through hole.
According to the spraying device for the telescopic arm, two adjacent valve bodies are connected through the first valve pin, the rear end of the first valve pin is connected with the valve body behind, the front end of the first valve pin is inserted into the valve body in front, and the first valve pin is internally provided with the second channel; when the front end of the valve pin is inserted into the rear end of the valve body, the valve core in the valve body is located at a first position, and the first through holes of the valve body located at the two ends of the valve pin are communicated; the valve spool in the forward valve body is in the second position when the valve pin is withdrawn from the forward valve body.
According to the spraying device for the telescopic boom, which is provided by the invention, the rear end of the valve body is provided with the jack, the jack is communicated with the first through hole, and the inner diameter of the jack is smaller than that of the first through hole; the first valve pin comprises a first plug positioned at the front end of the first valve pin, the outer diameter of the first plug is equal to the inner diameter of the jack, the length of the first plug is greater than that of the jack, the second channel comprises a fourth through hole and a fifth through hole, the fourth through hole penetrates through the front end and the rear end of the first valve pin, the fifth through hole is formed in the side wall of the first plug and positioned at the part, exceeding the length of the jack, of the front end of the first plug, and the fifth through hole is communicated with the fourth through hole; when the first plug is inserted into the jack, the valve core is located at a first position, and the fifth through hole is communicated with the first through hole.
According to the spraying device for the telescopic boom, provided by the invention, the rear end of the valve core is provided with the blocking head, the outer diameter of the blocking head is equal to the inner diameter of the jack, the first channel comprises a sixth through hole and a seventh through hole, the front end of the sixth through hole is communicated with the first through hole, and the seventh through hole is arranged on the side wall of the blocking head and is communicated with the sixth through hole; when the valve core is located at the first position, the rear end of the first through hole is communicated with the sixth through hole through the seventh through hole; when the valve core is located at the second position, the inner wall of the insertion hole closes the seventh through hole.
According to the spraying device for the telescopic arm, provided by the invention, the elastic piece is arranged between the valve core and the first valve pin, when the valve core is pressed towards the front end direction, the elastic piece reaches the first position, the elastic piece is pressed to accumulate force, and when the pressure applied to the valve core disappears, the elastic piece recovers deformation to release elastic force, and pushes the valve core to return to the second position.
According to the spraying device for the telescopic arm, the control valve corresponding to the nth group of telescopic mechanisms comprises the second valve pin, a third channel is arranged in the second valve pin, an eighth through hole is arranged on the outer side of the second valve pin, one end of the eighth through hole is communicated with the third channel, the other end of the eighth through hole is used for being connected with the corresponding spraying component, when the front end of the second valve pin is spliced with the (n-1) th valve body, the (n-1) th valve core is located at the first position, and the third channel is communicated with the first through hole.
According to the spraying device for the telescopic arm, provided by the invention, the second valve pin comprises a second plug positioned at the front end, the outer diameter of the second plug is equal to the inner diameter of the jack, the length of the second plug is greater than that of the jack, the third channel comprises a ninth through hole and a tenth through hole, the front end of the ninth through hole penetrates through the front end of the second valve pin, the tenth through hole is arranged on the outer side of the second plug and positioned at the part, exceeding the length of the jack, of the front end of the second plug, and after the second plug is inserted into the jack, the valve core is positioned at the first position, and the tenth through hole is communicated with the first through hole.
The spraying device for the telescopic arm further comprises m x n guide mechanisms, and each guide mechanism is arranged between every two adjacent arm sections and used for guiding the recovered arm sections.
The invention also provides a working machine which comprises a telescopic arm, wherein the arm section of the telescopic arm is provided with the spraying device.
According to the spraying device for the telescopic arm, the group of spraying components and the control valve are arranged on each group of telescopic mechanisms, so that the front spraying component can be used for spraying the adjacent and rear group of telescopic mechanisms. The spraying assembly is arranged on the front arm section of the arm section at the rearmost end of the corresponding telescopic mechanism, so that each arm section of the group of telescopic mechanisms can pass through the spraying assembly in the extending and retracting processes, and the sprayed substance of the spraying assembly is attached to the outer side of the arm section. The control valves are connected with each spraying assembly in a one-to-one correspondence mode and move along with the movement of the control valves, and the control valves are connected to the arm sections at the rearmost ends of the front group of telescopic mechanisms of the corresponding group of telescopic mechanisms. The pumping assembly is used for conveying the spray to the spraying assembly through the control valve. When two adjacent sets of telescopic machanisms withdraw relatively, two control valves that correspond, the front end that is located the control valve of rear end is connected with the rear end that is located the control valve of front end and is switched on, and when two adjacent sets of telescopic machanisms stretched out relatively, two control valves that correspond break away from the connection. When the pumping assembly is connected with the front k control valves in series, the control valve positioned at the front end is communicated with the pumping assembly, and only the kth control valve is communicated with the corresponding spraying assembly and the corresponding pumping assembly through the front k-1 control valves and is used for spraying the corresponding telescopic mechanism. The interior of the plurality of control valves can be ensured to be communicated with the pumping assembly, and only the control valve at the rearmost end of the plurality of control valves in series is communicated with the spraying assembly. Therefore, the control valve can replace a grease conveying pipe in the prior art to convey spraying materials for the spraying assembly, and the problems in the prior art are solved.
Further, the present invention provides a working machine having the above-described painting apparatus for a telescopic boom, and therefore, having the same advantages as described above.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a telescopic boom provided with a painting apparatus and having boom sections fully retracted according to the present invention;
FIG. 2 is a schematic view of the telescopic arm provided with the spraying device and only the last arm section is extended;
FIG. 3 is a schematic structural view of the telescopic arm provided with the spraying device and only extending out of the penultimate arm section;
FIG. 4 is a schematic structural view of the telescopic boom provided with the spraying device and only extending out of the third last boom section;
FIG. 5 is a schematic view of the connection of the control valve and the pumping assembly provided by the present invention;
FIG. 6 is a cross-sectional view of the first control valve provided in accordance with the present invention with the valve spool in a second position;
FIG. 7 is a cross-sectional view of the first control valve provided by the present invention with the valve spool in a first position;
FIG. 8 is a cross-sectional view of a second control valve provided by the present invention;
FIG. 9 is a structural view of a telescopic arm provided with a pilot mechanism according to the present invention;
reference numerals:
100: an arm section;
200: a spray assembly;
300: a pumping assembly;
400: a control valve; 410: a valve body; 411: a first through hole;
412: a second through hole; 413: a jack;
420: a valve core; 421: a third through hole; 422: a communicating groove;
423: plugging a plug; 424: a sixth through hole; 425: a seventh via hole;
430: a first valve pin; 431: a first plug; 432: a fourth via hole;
433: a fifth through hole;
500: a spring;
610: a second valve pin; 611: an eighth through hole; 612: a ninth via hole;
613: a tenth through hole;
701: a tongue plate; 702: a guide block;
800: a base arm.
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.
The painting apparatus for a telescopic arm of the present invention will be described with reference to fig. 1 to 9.
First, the directions in the present invention are defined as follows: the front refers to the direction in which the boom retracts and the rear refers to the direction in which the boom extends, or, referring to fig. 1-4, the direction to the right on the page is front and the direction to the left on the page is rear.
The spraying device for the telescopic arm, provided by the embodiment of the invention, is mainly used for a working machine which comprises n groups of telescopic mechanisms, wherein each group of telescopic mechanisms comprises the telescopic arm with m arm sections 100, and is used for spraying liquid spraying materials such as lubricating grease or paint for the arm sections 100 of each group of telescopic mechanisms, and the spraying device comprises a spraying component 200, a control valve 400 and a pumping component 300.
The spraying assembly 200 is provided with n, each group of telescopic mechanisms is correspondingly provided with a group of spraying assemblies 200, each group of spraying assemblies 200 is arranged on the arm section 100 in front of the arm section 100 at the rearmost arm section of the corresponding group of telescopic mechanisms, and more specifically, the spraying assemblies 200 are positioned outside the telescopic opening at the rear end of the arm section 100. Wherein n is more than or equal to 2, namely the spraying device is applied to a telescopic arm at least comprising two groups of telescopic mechanisms. If the telescopic mechanism only comprises one group, only one group of spraying components 200 is needed to be installed, and selective conduction of the spraying components 200 is not needed, so that the spraying device provided by the invention is applied to the telescopic arm at least comprising two groups of telescopic mechanisms.
The number of the control valves 400 is n, the control valves 400 are correspondingly communicated with one spraying assembly 200 and are fixedly or detachably connected with the spraying assembly 200, so that the spraying assembly 200 moves along with the movement of the control valves 400, and the control valves 400 are linearly arranged along the extension and retraction directions of the groups of extension and retraction mechanisms. The control valve 400 moves in response to the extension and contraction of the arm section 100.
The control valve 400 is arranged on the last arm section 100 of the previous group of telescopic mechanisms of the corresponding telescopic mechanism, so that when all the arm sections 100 of the corresponding telescopic mechanisms do telescopic movement, the corresponding control valve 400 is in a static state and is always kept in a connection state with the previous control valve 400.
When two adjacent sets of telescopic machanisms withdraw relatively, with two control valves 400 that two sets of telescopic machanisms correspond, the front end of the control valve 400 that is located the rear end is connected with the rear end of the control valve 400 that is located the front end and is switched on, when two adjacent sets of telescopic machanisms stretch out relatively, with two control valves 400 disconnection that two sets of telescopic machanisms correspond.
Specifically, when one of the control valves 400 extends with the arm segment 100, the control valve 400 moves relative to the adjacent and preceding control valve 100, and the two control valves 400 are disconnected.
Wherein the spray assembly 200 includes a support arm and a nozzle, the support arm extends around the telescopic opening at the rear end of the arm section 100, and is connected with the corresponding control valve 400, and can be detachably connected using bolts. Each support arm may be provided with a spray inlet and a plurality of spray outlets, each spray outlet being connected to a nozzle, the outlets of which are directed towards the arm segment 100, the spray inlets being connected to the spray outlets of the control valve 400.
The pumping assembly 300 may include a pump and a reservoir in which grease is stored when the spray coating device is used to spray grease and paint is stored when the spray coating device is used to spray paint.
When the pumping assembly 300 is connected in series with the first k control valves 400, the control valve 400 at the front end is connected to the pumping assembly 300, and more particularly, the control valve 400 at the front end may be connected to a pump via a hose, and the pump is communicated with a storage tank. The pump is used for delivering substances such as lubricating grease or paint in the storage tank to the control valve 400 and spraying the substances to the outer side of the arm section 100 by the spraying assembly 200 communicated with the control valve 400. The K control valves 400 are internally open and are open to the pump through the first control valve 400, and only the kth control valve 400 is open to the corresponding spray assembly 200, or only the spray assembly 200 that is open to the kth control valve 400 is open to the pump through the K control valves 400. The spray assembly 200 in communication with the kth control valve 400 is used to spray the plurality of arm segments 100 of the group. Wherein k is more than or equal to 1 and less than or equal to n.
In the first embodiment, the operation principle of the spray coating device for a telescopic arm according to the present invention is described by taking n =3,m =1 as an example.
When n =3,m =1, there are three sets of telescopic mechanisms, each set of telescopic mechanism includes one arm segment 100, the number of spray assemblies 200 is three, and the number of control valves 400 is also three.
The lower part of the working machine is provided with a section of basic arm 800, a first group of telescopic mechanisms are called as first telescopic mechanisms and are connected with the basic arm 800, and a second telescopic mechanism and a third telescopic mechanism are sequentially arranged along the extending direction of the first telescopic mechanisms. Each telescopic mechanism comprises one arm segment 100, so that one arm segment 100 of a first telescopic mechanism can be referred to as a first arm segment, one arm segment 100 of a second telescopic mechanism as a second arm segment, and one arm segment 100 of a third telescopic mechanism as a third arm segment.
The spray assembly 200 corresponding to the first arm segment may be referred to as a first spray assembly disposed outside the last telescoping port of the base arm 800, and the control valve 400 corresponding to the first arm segment may be referred to as a first control valve also disposed outside the last telescoping port of the base arm 800. Both the first spray assembly and the first control valve may be directly connected to the base arm 800, or only the first control valve may be directly connected to the base arm 800, and the first spray assembly is directly connected to the first control valve.
The spray assembly 200 corresponding to the second arm segment may be referred to as a second spray assembly disposed outside the last telescoping port of the first arm segment, and the control valve 400 corresponding to the second arm segment may be referred to as a second control valve also disposed outside the last telescoping port of the first arm segment. The second spraying assembly and the second control valve can be directly connected with the first arm section, or only the second control valve can be directly connected with the first arm section, the second spraying assembly is directly connected with the second control valve, and the second spraying assembly moves along with the movement of the first arm section through the second control valve.
The spray assembly 200 corresponding to the third arm segment may be referred to as a third spray assembly disposed outside the last telescoping port of the second arm segment, and the control valve 400 corresponding to the third arm segment may be referred to as a third control valve also disposed outside the last telescoping port of the second arm segment. The third spray assembly and the third control valve can be directly connected with the second arm section, or only the third control valve can be directly connected with the second arm section, the third spray assembly is directly connected with the third control valve, and the third spray assembly moves along with the movement of the second arm section through the third control valve.
In an initial state, the first arm section, the second arm section and the third arm section are all in a fully retracted state, and at the moment, the first control valve, the second control valve and the third control valve are connected in sequence from front to back. Wherein the first control valve is connected with the pumping assembly 300 through a hose, only the third control valve is conducted with the third spray assembly, and the communication passages of the first control valve and the second control valve with the corresponding spray assemblies 200 are blocked. At this time, the third spray assembly communicates with the pumping assembly 300 through the third control valve, the second control valve, and the first control valve. At this time, when the third arm section extends out, the third spraying component sprays substances such as lubricating grease or paint on the outer side of the third arm section.
When the second arm section extends out, the third control valve connected to the second arm section is disconnected from the second control valve, at the moment, the second control valve is communicated with the second spraying assembly, the second spraying assembly is communicated with the pumping assembly 300 through the second control valve and the first control valve, and in the process that the second arm section extends out, the second spraying assembly sprays lubricating grease or paint and other substances on the outer wall of the second arm section.
When the first arm section stretches out, the second control valve connected with the first arm section is disconnected from the first control valve, at the moment, the first control valve is communicated with the first spraying assembly, the first spraying assembly is communicated with the pumping assembly 300 through the first control valve, and in the process that the first arm section stretches out, the first spraying assembly sprays lubricating grease or paint and other substances on the outer wall of the first arm section.
In a second embodiment, a spray coating device according to the present invention is described with n =2,m =2 as an example.
When n =2,m =2, the telescopic mechanisms comprise two sets, each set comprising two arm segments 100. The upper vehicle of the working machine is provided with a basic arm 800, two arm sections 100 of the first group of telescopic mechanisms are connected in a nested manner, a fourth arm section positioned at the front end is connected with the basic arm 800, and a fifth arm section positioned at the rear end is connected with the fourth arm section. Two arm sections 100 of the second group of telescopic mechanisms are connected in a nested manner, a sixth arm section positioned at the front end is connected with a fifth arm section, and a seventh arm section positioned at the rear end is connected with the sixth arm section.
Here, the spray assembly 200 corresponding to the first set of telescopic mechanisms may be referred to as a fourth spray assembly, which is disposed outside the last telescopic port of the fourth arm section, and the control valve 400 corresponding to the first set of telescopic mechanisms may be referred to as a fourth control valve, which is disposed outside the last telescopic port of the base arm 800. The fourth spraying assembly is not connected with the fourth arm section, and the fourth spraying assembly is only fixedly connected with the fourth control valve.
The spray assembly 200 corresponding to the second set of telescoping mechanisms may be referred to as a fifth spray assembly disposed outside of the telescoping port of the last of the sixth arm sections, and the control valve 400 corresponding to the second set of telescoping mechanisms may be referred to as a fifth control valve disposed outside of the telescoping port of the last of the fifth arm sections. The fifth spraying assembly is not connected with the sixth arm section, the fifth spraying assembly is only fixedly connected with the fifth control valve, and the fifth spraying assembly moves along with the extension of the fifth arm section through the fifth control valve.
In an initial state, the fourth arm section, the fifth arm section, the sixth arm section and the seventh arm section are all in a completely retracted state, and at the moment, the fourth control valve and the fifth control valve are connected in sequence from front to back. The fourth control valve is connected with the pumping assembly through a hose, only the fifth control valve is communicated with the fifth spraying assembly, and a communication channel between the fourth control valve and the corresponding fourth spraying assembly is blocked. At this time, the fifth spray assembly communicates with the pumping assembly 300 through the fifth and fourth control valves.
When the seventh arm section extends out, the fifth control valve and the fourth control valve are in a connected state, the fifth spraying assembly and the fifth control valve are in a communicated state, and spraying can be performed on the telescopic seventh arm section.
When the sixth arm section extends out, the fifth arm section does not move, so that the fifth control valve and the fourth control valve are still in a connected state, the fifth spraying assembly and the fifth control valve are in a communicated state, and the sixth arm section which is stretching and retracting can be sprayed.
When the fifth arm section extends out, the fifth arm section drives the fifth control valve to move together, so that the fifth control valve is disconnected from the fourth control valve, the fourth spraying assembly communicated with the fourth control valve is communicated with the pump, and the telescopic fifth arm section can be sprayed.
When the fourth arm section stretches out, the fourth spraying assembly and the fourth control valve are still in a conducting state, and spraying can be carried out on the telescopic fourth arm section.
The above embodiment is merely exemplary, and of course, each arm segment 100 can be sprayed when m and n are any other values satisfying n ≧ 2 and m ≧ 1, the principle being the same as described above.
According to the spraying device for the telescopic boom, the mode that a hose is used for connection in the related art is replaced by the serial connection of the control valves 400, the control valve 400 at the last position is always communicated with the corresponding spraying assembly 200, and the problems that the hose is not easy to collect and is easy to damage due to the long-distance use of the hose are solved.
In the embodiment of the present invention, the control valve 400 includes two types, and the two types of control valves 400 will be described below.
The first control valve 400 includes a valve body 410 and a valve spool 420.
Wherein, the valve body 410 is a cylindrical structure, a first through hole 411 is provided inside the valve body 410, and the first through hole 411 may be a cylindrical through hole. A second through hole 412 communicating the inner side and the outer side of the first through hole 411 is formed in the outer side wall of the valve body 410, and the second through hole 412 is used for being connected with the spray assembly 200.
The valve core 420 is also a cylindrical structure, the outer diameter of the valve core 420 is equal to the inner diameter of the first through hole 411, and the length of the valve core 420 is less than the length of the first through hole 411. The valve body 410 is disposed in the first through hole 411 of the valve body 420 and is slidable relative to the valve body. The valve body 420 is provided therein with a first passage for communicating front and rear ends of the first through hole 411. The outer side wall of the valve core 420 is provided with a third through hole 421, and the third through hole 421 communicates with the inner side and the outer side of the first channel.
A plurality of third through holes 421 may be arranged along the circumferential direction of the valve core 420, and a communication groove 422 surrounding the valve core 420 is provided at a position where the plurality of third through holes 421 are provided, and the communication groove 422 communicates the plurality of third through holes 421. In this way, when the valve body 420 rotates, the third through hole 421 and the second through hole 412 can be ensured to communicate with each other.
Taking the example of only the second control valve and the first control valve being connected in series with the pumping assembly 300, the operation principle of the control valve 400 is as follows, when the front end of the second control valve is connected to the rear end of the first control valve, the front end of the second control valve enters the rear end of the first through hole 411 of the first control valve, and since the valve core 420 can slide axially along the first through hole 411 of the valve body 410, the second control valve pushes the valve core 420 in the first control valve to move forward, and the valve core 420 reaches the first position.
When the valve core 420 is located at the first position, the first channel communicates front and rear ends of the first through hole 411, so that the first through holes 411 of the first control valve and the second control valve are communicated. At this time, the second through hole 412 and the communicating groove 422 outside the third through hole 421 are dislocated, the inner wall of the valve body 410 closes the communicating groove 422, and the inner wall of the valve core 420 closes the second through hole 412, so that the connecting passage between the first control valve and the spray assembly 200 is blocked.
However, the rear end of the second control valve is not connected to the third control valve, and thus the valve body 420 may be located at the second position under the pressure of the spray such as grease or paint. When the valve body 420 is located at the second position, the rear end of the first passage is closed by the inner wall of the valve body 410, and the communication between the front and rear ends of the first through hole 411 is blocked. At this time, the second through hole 412 of the valve body 410 is aligned and communicated with the third through hole 421 of the valve core 420, the spraying assembly 200 connected with the second through hole 412 of the second control valve is communicated with the second control valve, and the sprayed materials such as grease or paint can be conveyed to the second spraying assembly through the first control valve and the second control valve.
Further, for the first control valve 400, the first valve pin 430 is further included, the connection between the first through holes 411 of the two adjacent valve bodies 410 can be realized through the first valve pin 430, the rear end of the first valve pin 430 and the following valve body 410 can be in threaded connection, the front end of the first valve pin 430 is inserted into the preceding valve body 410, and a second channel is arranged in the first valve pin 430.
Taking the second control valve and the first control valve as an example, the first valve pin 430 is disposed between the second control valve and the first control valve, or the first valve pin 430 may be regarded as a part of the second control valve, the rear end of the first valve pin 430 is detachably connected to the front end of the second control valve, for example, it may be a threaded connection, the rear end of the first valve pin 430 is disposed with an external thread, the front end of the first through hole 411 of the valve body 410 of the second control valve is disposed with an internal thread, and both are in threaded connection, at this time, the second channel is communicated with the first through hole 411 of the second control valve.
When the second control valve is connected with the first control valve, the front end of the first valve pin 430 can be inserted into the first through hole 411 at the rear end of the first control valve, the front end of the first valve pin 430 pushes the valve core 420 of the first control valve to move forward, so that the valve core 420 moves from the second position to the first position, the first channel of the valve core 420 is communicated with the front end and the rear end of the first through hole 411 of the first control valve, and the second channel of the first valve pin 430 is communicated with the rear end of the first through hole 411, thereby realizing the communication between the first through hole 411 of the first control valve and the first through hole 411 of the second control valve.
A magnetic attraction component can be arranged between the front end of the first valve pin 430 and the valve core 420 of the first control valve, when the first valve pin 430 at the front end of the second control valve is drawn out from the rear end of the first control valve, the first valve pin 430 can drive the valve core 420 of the first control valve to move from the first position to the second position, at the moment, the first valve pin 430 is disconnected with the valve body 410 of the first control valve, the rear end of the first channel of the valve core 420 of the first control valve is sealed by the valve body 410 of the first control valve, then the head end and the tail end of the first through hole 411 of the first control valve are disconnected, the second through hole 412 and the third through hole 421 of the first control valve are communicated, and spray materials such as lubricating grease or paint are conveyed for the corresponding spray component 200.
Further, the rear end of the valve body 410 is provided with an insertion hole 413, the insertion hole 413 communicates with the first through hole 411, and an inner diameter of the insertion hole 413 is smaller than that of the first through hole 411. The first valve pin 430 includes a first plug 431 at a front end, the first plug 431 has an outer diameter equal to an inner diameter of the socket 413, and the length of the first plug 431 is greater than that of the socket 413. When the first plug 431 is inserted into the insertion hole 413, the outer side wall of the first plug 431 is in close sealing contact with the inner side wall of the insertion hole 413, and the part of the first plug 431 exceeding the length of the insertion hole 413 enters the first through hole 411 of the front valve body 410.
The second channel in the first valve pin 430 includes a fourth through bore 432 and a fifth through bore 433. The fourth through hole 432 extends through the first valve pin 430 in the axial direction of the first valve pin 430. The fifth through hole 433 is provided at an outer side wall of a portion of the first plug 431 exceeding the length of the plug, extending in a radial direction of the first plug 431, and the fifth through hole 433 communicates inner and outer sides of the fourth through hole 432.
The fifth through hole 433 may be provided in plurality in a circumferential direction of the first plug 431, and since an outer diameter of the first plug 431 is smaller than an inner diameter of the first through hole 411, a gap is left between an outer sidewall of the first plug 431 and an inner wall of the first through hole 411, and after the front end of the first plug 431 is inserted into the first through hole 411, the fifth through hole 433 may be in a conductive state.
Taking the second control valve and the first control valve as an example, the first plug 431 of the first valve pin 430 arranged at the front end of the second control valve is inserted forward into the insertion hole 413 at the rear end of the first control valve, the part of the first plug 431 exceeding the length of the insertion hole 413 enters the first through hole 411 of the valve body 410 of the first control valve, the front end of the first plug 431 pushes the valve core 420 of the first control valve to reach the first position, the valve core 420 conducts the front end and the rear end of the first through hole 411, the fifth through hole 433 of the first plug 431 is also communicated with the rear end of the first through hole 411 of the first control valve, and the communication between the first through hole 411 of the first control valve and the first through hole 411 of the second control valve is realized through the fifth through hole 433 and the fourth through hole 432.
Further, for the connection of the front and rear ends of the first through hole 411 of a certain control valve 400, in an embodiment of the present invention, a blocking head 423 is disposed at the rear end of the valve core 420, and the outer diameter of the blocking head 423 is equal to the inner diameter of the insertion hole 413. The first passage includes a sixth through hole 424 and a seventh through hole 425, a front end of the sixth through hole 424 penetrates through a front end of the valve core 420 to communicate with a front end of the first through hole 411, and a blocking head 423 is closed at a rear end of the sixth through hole 424. The seventh through hole 425 is formed in a sidewall of the blocking head 423 to communicate the inner and outer sides of the sixth through hole 424.
The plurality of seventh through holes 425 may be distributed along the circumference of the blocking head 423, and since the outer diameter of the blocking head 423 is smaller than the inner diameter of the first through hole 411, when the blocking head 423 is located in the first through hole 411, the seventh through holes 425 are in a conducting state, and when the blocking head 423 is located in the insertion hole 413, the seventh through holes 425 are closed by the inner wall of the insertion hole 413.
When the valve core 420 receives a forward thrust to reach the first position, the blocking head 423 is located in the first through hole 411, a space is left between the outer side wall of the blocking head 423 and the inner wall of the first through hole 411, so that the seventh through hole 425 is communicated, and the front end and the rear end of the first through hole 411 are communicated through the seventh through hole 425 and the sixth through hole 424.
When the valve core 420 is located at the second position, the blocking head 423 is just located in the insertion hole 413, the inner wall of the insertion hole 413 is attached to the outer wall of the blocking head 423, and the inner wall of the insertion hole 413 blocks the seventh through hole 425, so that the rear end of the first through hole 411 is closed.
In one embodiment of the present invention, for the first control valve 400, a resilient member, such as a spring 500, may be disposed between the valve spool 420 and the first valve pin 430. When the first valve pin 430 is inserted into the rear end of the front first control valve, the first plug 431 of the first valve pin 430 pushes the valve core 420 of the front control valve 400 to move forward to the first position, and the spring 500 is pressurized. When the first valve pin 430 is pulled out of the rear end of the preceding first control valve, the spring 500 recovers its deformation to release the elastic force, pushing the valve core 420 back to the second position.
The second control valve 400 is a normally open valve only, and the opening and closing functions of the first control valve 400 cannot be realized, and therefore, the second control valve can be applied only to the nth group telescopic mechanism.
The second control valve 400 comprises a second valve pin 610, a third channel is arranged inside the second valve pin 610, an eighth through hole 611 for communicating with the spray assembly 200 is arranged outside the second valve pin 610, and the eighth through hole 611 communicates with the inner side and the outer side of the third channel.
The second valve pin 610 includes a second plug at the front end, which is identical in construction to the first plug 431. The outer diameter of the second plug is equal to the inner diameter of the socket 413 and the length of the second plug is greater than the length of the socket 413. When the second plug is inserted into the insertion hole 413, the outer side wall of the second plug is in fit sealing with the inner side wall of the insertion hole 413, and the part of the second plug exceeding the length of the insertion hole 413 enters the first through hole 411 of the valve body 410.
The third passage includes a ninth through hole 612 and a tenth through hole 613, a front end of the ninth through hole 612 penetrates a front end of the second valve pin 610, a rear end of the second valve pin 610 is closed, and an eighth through hole 611 communicates with a rear end of the ninth through hole 612. The tenth through hole 613 is disposed outside a portion of the second plug that exceeds the length of the insertion hole 413, and the tenth through hole 613 radially communicates the inner and outer sides of the ninth through hole 612.
When the second plug is inserted into the insertion hole 413, the tenth through hole 613 is located in the first through hole 411 of the valve body 410, and connects the first through hole 411 and the eighth through hole 611, so as to communicate with the spray assembly 200.
In the actual installation process, the first control valve 400 is installed on the front n-1 groups of telescopic mechanisms, the second control valve 400 is installed on the nth group of telescopic mechanisms, and the second control valve 400 is simple in structure and saves cost.
In an embodiment of the present invention, m × n pilot mechanisms are further included, and the m × n pilot mechanisms are respectively disposed between two adjacent arm sections 100 and are used for guiding the recovered arm section 100 so that the first plug 431 or the second plug can be aligned with the previous valve body 410.
The guide mechanism can comprise a tongue plate 701 and a guide block 702, the tongue plate 701 is arranged at the rear end of the arm section 100 and extends along the extending direction of the arm section 100, the guide block 702 is arranged at the rear end of the next adjacent arm section 100, the two guide blocks 702 are respectively arranged at two sides of the tongue plate 701 along the width direction, the distance between the two tongue plates 701 is equal to the width of the tongue plate 701, and the rear end of the tongue plate 701 is conical.
When the arm section 100 is twisted after operation, the tapered part at the front end of the tongue plate 701 firstly enters between the two guiding blocks 702 when the arm section 100 is retracted, and then the guiding blocks 702 drive the arm section 100 to rotate to the initial position under the action of the tongue plate 701. This ensures that the control valves 400 provided on the arm segments 100 are aligned with each other during the retraction of the arm segments 100.
The invention also provides an operating machine which comprises the telescopic boom, wherein the spraying devices are arranged on the multiple groups of telescopic mechanisms of the telescopic boom, and the effect of spraying lubricating grease or paint on the boom section 100 can be realized in the telescopic process of the telescopic boom.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and 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 (10)
1. A spraying device for a telescopic boom, the telescopic boom comprises n groups of telescopic mechanisms, each group of telescopic mechanisms comprises m boom sections, wherein n is more than or equal to 2,m is more than or equal to 1, and the spraying device is characterized by comprising:
each group of telescopic mechanisms is provided with one group of spraying assemblies, and the spraying assemblies are arranged on the arm section which is one section before the corresponding arm section at the rearmost end of each telescopic mechanism;
each group of spraying components is correspondingly connected with one control valve, and the control valves are connected to the arm sections at the rearmost ends of the front group of telescopic mechanisms of the corresponding group of telescopic mechanisms;
the pumping assembly is used for conveying spraying materials to the spraying assembly through the control valve;
when two adjacent groups of telescopic mechanisms are relatively retracted, the front ends of the control valves of the two corresponding control valves at the rear ends are connected with the rear ends of the control valves at the front ends, and when two adjacent groups of telescopic mechanisms are relatively extended, the two corresponding control valves are disconnected;
when the pumping assembly is connected with the first k control valves in series, the control valve at the front end is connected with the pumping assembly, only the kth control valve is communicated with the corresponding spraying assembly and the pumping assembly through the first k-1 control valves, the kth spraying assembly is used for spraying the corresponding telescopic mechanism, wherein k is more than or equal to 1 and less than or equal to n, and m, n and k are integers.
2. A spray apparatus for a telescopic arm according to claim 1, wherein said control valve provided on the first n-1 of said telescopic mechanisms comprises:
the spray coating device comprises a valve body, a first through hole is formed in the valve body, a second through hole is formed in the outer wall of the valve body, the second through hole is communicated with the inner side and the outer side of the first through hole, and the second through hole is used for being communicated with a spray coating assembly;
the valve core is arranged in the first through hole, a first channel is arranged inside the valve core, a third through hole is formed in the outer wall of the valve core, and the third through hole is communicated with the inner side and the outer side of the first channel;
when the pumping assembly is connected with the first k-1 control valves in series, the valve core of the first k-2 control valves is located at the first position, and the valve core of the k-1 control valve is located at the second position;
when the valve core is positioned at the first position, the front end and the rear end of the first through hole are communicated through the first channel, and the second through hole and/or the third through hole are/is closed; when the valve core is located at the second position, the valve body blocks the first channel, the rear end of the first through hole is closed, and the second through hole is communicated with the third through hole.
3. A painting apparatus for a telescopic arm according to claim 2,
two adjacent valve bodies are connected through a first valve pin, the rear end of the first valve pin is connected with the rear valve body, the front end of the first valve pin is inserted into the front valve body, and a second channel is arranged in the first valve pin;
when the front end of the valve pin is inserted into the rear end of the valve body, the valve core in the valve body is located at a first position, and the first through holes of the valve body located at the two ends of the valve pin are communicated;
the valve spool in the forward valve body is in the second position when the valve pin is withdrawn from the forward valve body.
4. A painting apparatus for a telescopic arm according to claim 3,
the rear end of the valve body is provided with a jack, the jack is communicated with the first through hole, and the inner diameter of the jack is smaller than that of the first through hole;
the first valve pin comprises a first plug positioned at the front end of the first valve pin, the outer diameter of the first plug is equal to the inner diameter of the jack, the length of the first plug is greater than that of the jack, the second channel comprises a fourth through hole and a fifth through hole, the fourth through hole penetrates through the front end and the rear end of the first valve pin, the fifth through hole is formed in the side wall of the first plug and positioned at the part, exceeding the length of the jack, of the front end of the first plug, and the fifth through hole is communicated with the fourth through hole;
when the first plug is inserted into the jack, the valve core is located at a first position, and the fifth through hole is communicated with the first through hole.
5. The spraying device for the telescopic boom according to claim 4, wherein a blocking head is arranged at the rear end of the valve core, the outer diameter of the blocking head is equal to the inner diameter of the insertion hole, the first channel comprises a sixth through hole and a seventh through hole, the front end of the sixth through hole is communicated with the first through hole, and the seventh through hole is arranged on the side wall of the blocking head and is communicated with the sixth through hole;
when the valve core is located at the first position, the rear end of the first through hole is communicated with the sixth through hole through the seventh through hole;
when the valve core is located at the second position, the inner wall of the insertion hole closes the seventh through hole.
6. The spray coating device for telescopic arm of claim 3, wherein an elastic member is further disposed between the valve core and the first valve pin, and when the valve core is pressed toward the front end, the elastic member is pressed to accumulate force, and when the pressure applied to the valve core is removed, the elastic member is deformed to release the elastic force, so as to push the valve core back to the second position.
7. The spray coating device for the telescopic arm as claimed in claim 4, wherein the control valve corresponding to the nth group of the telescopic mechanisms includes a second valve pin, a third passage is provided in the second valve pin, an eighth through hole is provided on the outer side of the second valve pin, one end of the eighth through hole is communicated with the third passage, the other end of the eighth through hole is used for connecting with the corresponding spray coating component, when the front end of the second valve pin is inserted into the (n-1) th valve body, the (n-1) th valve core is located at the first position, and the third passage is communicated with the first through hole.
8. The spray coating device for a telescopic arm according to claim 7, wherein the second valve pin comprises a second plug at a front end, an outer diameter of the second plug is equal to an inner diameter of the insertion hole, a length of the second plug is greater than a length of the insertion hole, the third passage comprises a ninth through hole and a tenth through hole, a front end of the ninth through hole penetrates through a front end of the second valve pin, the tenth through hole is disposed outside the second plug and at a portion of the front end of the second plug exceeding the length of the insertion hole, and when the second plug is inserted into the insertion hole, the valve core is located at the first position, and the tenth through hole is in communication with the first through hole.
9. The painting apparatus for a telescopic boom of claim 1, further comprising m x n pilot mechanisms, each pilot mechanism being disposed between two adjacent boom sections for guiding the boom sections to be retracted.
10. A working machine comprising a telescopic boom, wherein a boom section of the telescopic boom is provided with a painting apparatus according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165680.9A CN113941467B (en) | 2021-09-30 | 2021-09-30 | Spraying device for telescopic boom and working machine |
| PCT/CN2022/099259 WO2023050898A1 (en) | 2021-09-30 | 2022-06-16 | Spray-coating device for telescopic boom, and operation machine and control valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111165680.9A CN113941467B (en) | 2021-09-30 | 2021-09-30 | Spraying device for telescopic boom and working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113941467A CN113941467A (en) | 2022-01-18 |
| CN113941467B true CN113941467B (en) | 2022-11-04 |
Family
ID=79329829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111165680.9A Active CN113941467B (en) | 2021-09-30 | 2021-09-30 | Spraying device for telescopic boom and working machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113941467B (en) |
| WO (1) | WO2023050898A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941467B (en) * | 2021-09-30 | 2022-11-04 | 湖南三一中型起重机械有限公司 | Spraying device for telescopic boom and working machine |
| CN116329044B (en) * | 2023-04-19 | 2024-04-19 | 一汽丰田汽车有限公司 | Method and device for spraying bumper, electronic equipment and storage medium |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5841905B2 (en) * | 1980-10-20 | 1983-09-16 | 株式会社マルナカ製作所 | Opening/closing device in telescopic spreading equipment |
| JPH0522982U (en) * | 1991-09-10 | 1993-03-26 | 三菱電機株式会社 | Pipe fittings |
| US6499670B1 (en) * | 1999-02-23 | 2002-12-31 | E. D. Etnyre & Co. | Directional control valve and valve assembly in an asphalt distributor |
| DE102012024290A1 (en) * | 2012-12-12 | 2013-06-13 | Eisenmann Ag | Coupling system for alternating system used for coating e.g. paint to e.g. car portion, has primary closing element that is moved from closed position into coupling position when coupling units are moved towards each other |
| CN204616612U (en) * | 2015-05-12 | 2015-09-09 | 潍坊友容实业有限公司 | Hillside fields water-saving spray irrigation system |
| JP6385320B2 (en) * | 2015-09-28 | 2018-09-05 | 株式会社丸山製作所 | Boom device and chemical spraying device |
| CN205518339U (en) * | 2016-04-19 | 2016-08-31 | 陈念枢 | It sprays vehicle to be used for spraying fluidic |
| CN108787237B (en) * | 2018-06-28 | 2020-05-12 | 安徽智汇和专利技术开发有限公司 | Paint spraying mechanism |
| CN110270462B (en) * | 2019-08-01 | 2024-03-22 | 湖南星沙机床设备有限公司 | Coating system for manufacturing crane auxiliary arm by section steel |
| CN110813583B (en) * | 2019-12-12 | 2024-06-04 | 天津昭阳科技有限公司 | Automatic atomizing spraying system for lubricating grease on outer wall of telescopic arm of crane |
| CN113941467B (en) * | 2021-09-30 | 2022-11-04 | 湖南三一中型起重机械有限公司 | Spraying device for telescopic boom and working machine |
-
2021
- 2021-09-30 CN CN202111165680.9A patent/CN113941467B/en active Active
-
2022
- 2022-06-16 WO PCT/CN2022/099259 patent/WO2023050898A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023050898A1 (en) | 2023-04-06 |
| CN113941467A (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113941467B (en) | Spraying device for telescopic boom and working machine | |
| CN103486375B (en) | Air path inserting-pulling combined connector | |
| CN112240448B (en) | Hydraulic anchoring plugging device of intelligent pipeline plugging robot | |
| CA1163449A (en) | Cable reaming apparatus and method | |
| US6415722B1 (en) | Remote-controlled vehicle for operations inside pipelines | |
| CN104591014A (en) | Telescopic cylinder, landing leg control system and crane | |
| CN110792873A (en) | Hydraulic speed reduction locking device of intelligent pipeline plugging robot | |
| CN102989734A (en) | Low pressure maintaining and overflow stop apparatus for high pressure washer | |
| CN103148313A (en) | Device and method for blocking connecting place between pipes of shield tunneling machine | |
| CN103291342A (en) | Pipeline system capable of achieving hydraulic support long-distance liquid supply | |
| CN116273601B (en) | Fixing clamping assembly for spraying and winding insulating pipe | |
| CN116780275B (en) | Fast-assembling formula new forms of energy cable | |
| CN107917297B (en) | Low-leakage-rate and long-service-life bidirectional under-pressure plug quick disconnect device | |
| CN212581397U (en) | Lubricating structure, crane boom and crane | |
| CN210462140U (en) | Hydraulic speed reduction locking device of intelligent pipeline plugging robot | |
| CN108235718A (en) | Connector is connected | |
| CN112628490A (en) | Bidirectional sealing quick joint | |
| CN205371157U (en) | Hydraulic cylinder and engineering machinery | |
| CN214947180U (en) | High-pressure steel wire braided rubber pipe rotary joint | |
| CN216867131U (en) | Casing and shrinkage pipe assembly, hydraulic system and engineering machinery | |
| CN212406680U (en) | A spray instrument for water jet casing scale removal | |
| CN216691051U (en) | Cleaning device | |
| CN107351126B (en) | Automatic butt joint oiling mechanism | |
| CN219388799U (en) | Improved pipe body arc jacking device | |
| CN113381236B (en) | Telescopic electric connector for blind insertion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |