CN114772171A - Telescopic conveying device and scraper conveyor - Google Patents
Telescopic conveying device and scraper conveyor Download PDFInfo
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- CN114772171A CN114772171A CN202210342607.2A CN202210342607A CN114772171A CN 114772171 A CN114772171 A CN 114772171A CN 202210342607 A CN202210342607 A CN 202210342607A CN 114772171 A CN114772171 A CN 114772171A
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- baffle
- shell
- telescopic
- discharge
- conveyor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
- B65G19/22—Impellers, e.g. push-plates, scrapers; Guiding means therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pusher Or Impeller Conveyors (AREA)
Abstract
The invention discloses a telescopic conveying device and a scraper conveyor, which comprise a telescopic main body (1.1), a discharge baffle (1.2) and a baffle limiting mechanism, wherein the upper end of the discharge baffle (1.2) is rotatably connected with the telescopic main body (1.1); the baffle stop gear is fixed to be set up in discharge baffle (1.2) left side, set up the inclined plane that is used for spacing discharge baffle (1.2) on the baffle stop gear, when discharge baffle (1.2) moved left and contacted baffle stop gear, discharge baffle (1.2) was backed out to rotate along baffle stop gear's inclined plane gradually right, according to the below opening size of discharge baffle (1.2) of displacement self-adaptation regulation discharge baffle (1.2). The discharge port of the conveyor adopts a movable baffle plate and a top plate, the size of the discharge port is self-adaptively adjusted according to the moving or telescopic distance, manual adjustment is not needed, and the operation efficiency is improved.
Description
Technical Field
The invention relates to a telescopic conveying device and a scraper conveyor, and belongs to the technical field of scraper conveyors.
Background
When a coal transportation trunk vehicle enters and exits from a tunnel entrance, airflow disturbance is generated due to sudden space change, so that pulverized coal is scattered on a track bed, and a sleeper is submerged after accumulation, so that driving safety is influenced, and manual regular cleaning is needed; at present, foreign road bed cleaning vehicles cannot meet the cleaning requirements of domestic tunnel coal dust and road bed scrap iron. In recent years, dedicated sewage treatment equipment is developed for tunnel pulverized coal, railway bed scrap iron, track gravel cleaning and the like in China independently to replace manpower, the existing tunnel internal transverse material conveying technology adopts a pneumatic conveying and conveying belt conveying mode, and the scraper conveying mode adopts telescopic conveying. Traditional telescopic conveyors applied to the market are all provided with belt storage devices, occupy too much height and space and cannot be applied to narrow spaces.
The movable wavy flange belt conveyor is adopted in the prior art, the dust content is large in the conveying process, the movable belt conveyor can freely move through the movable frame, the angle can be adjusted, the discharging position cannot be automatically adjusted, and the operation is complicated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a telescopic conveying device and a scraper conveyor, which solve the problem of overlarge dust in the material conveying process of the scraper conveyor and adaptively adjust the size of a discharge hole according to the moving or telescopic distance.
In order to achieve the purpose, the invention provides a telescopic conveying device which comprises a telescopic main body, a discharge baffle plate and a baffle plate limiting mechanism, wherein the upper end of the discharge baffle plate is rotatably connected with the telescopic main body;
the baffle stop gear is fixed to be set up in discharge baffle left side, sets up the inclined plane that is used for spacing discharge baffle on the baffle stop gear, when discharge baffle moved left and contacts baffle stop gear, discharge baffle was backed out to rotate along baffle stop gear's inclined plane gradually right, according to discharge baffle's displacement distance self-adaptation regulation discharge baffle's below opening size.
Preferably, the baffle limiting mechanism is a copying stop block, the copying stop block is fixedly arranged on the left side of the discharge baffle, and an inclined plane formed on the copying stop block inclines from the upper left to the lower right.
Preferentially, discharge baffle includes baffle main part and wear-resisting baffle, and baffle main part upper end is rotated and is connected flexible main part, wear-resisting baffle fixed connection baffle main part one side, and eyebolt is fixed to be set up on wear-resisting baffle, and wear-resisting baffle and baffle stop gear lie in discharge baffle with one side.
Preferably, the telescopic body and the discharge baffle plate are combined to form an arc plate with a semicircular cross section when the telescopic body does not reach the discharge port of the shell of the scraper conveyor.
Preferably, the upper end of the discharging baffle is hermetically hinged with the telescopic main body and used for blocking dust generated in the transportation process of the scraper conveyor.
The utility model provides a scraper conveyor, its loading has the aforesaid a flexible conveyor, still include annular transmission band, long telescopic shell and shell, flexible main part is fixed to be set up at the scraper conveyor right-hand member, and annular transmission band is fixed to be set up inside long telescopic shell, and baffle stop gear is fixed to be set up in the shell inner part end, and flexible main part is fixed to be set up at long telescopic shell right-hand member, and the inner shell discharge gate is seted up to long telescopic shell right-hand member lower extreme, and long telescopic shell slides and sets up in the shell inner part.
Preferably, the device comprises a shell discharging frame, the shell discharging frame is fixedly connected with the lower end of the shell, a shell discharging hole is formed in the lower end of the shell, the shell discharging hole is communicated with the shell discharging frame, and the baffle limiting mechanism is located above the shell discharging hole;
the flexible main part reachs shell ejection of compact frame top, and the material that transports gets into the lower floor along endless conveyor's circular arc and scrapes the material track to discharge the material shell ejection of compact frame.
Preferably, the housing is a hollow frame.
Preferably, the feeding device comprises a feeding port, the feeding port is formed in the shell, and the feeding port is located above the annular conveying belt.
Preferably, the device comprises sliding blocks, the sliding blocks are fixedly arranged on the front side and the rear side of the annular conveying belt, and sliding grooves matched with the sliding blocks are formed in the front side and the rear side inside the shell.
The invention achieves the following beneficial effects:
according to the telescopic scraper conveyor, the shell is added, so that the telescopic scraper conveyor can move in the shell all the time, the discharge hole of the discharge baffle is in an arc shape, materials on the upper layer are lifted and transported through the scraper of the annular conveying belt, and materials on the lower layer are transported through friction between the scraper and the shell, so that the content of environmental dust is reduced;
the invention solves the problems that the discharging direction of the scraper conveyor is single and the opening size of a hopper below the scraper conveyor cannot be adapted to, and the discharging port of the conveyor adopts a movable discharging baffle plate and a fixed telescopic main body, so that the size of the discharging port can be adaptively adjusted according to the moving or telescopic distance without manual adjustment, and the operation efficiency is improved;
when the flexible conveyor of needs during operation, slide flexible conveyor right, remove shell ejection of compact frame top with flexible conveyor, the friction of the scraper blade of annular transmission band and shell is transported the material that drops in the shell, need not artifical clean shell, and work efficiency is high.
Drawings
Fig. 1 is a structural view of a scraper conveyor proposed by the present invention;
fig. 2 is a structural view of a telescopic conveyor proposed by the present invention;
FIG. 3 is a schematic view of a discharge baffle according to the present invention;
FIG. 4 is a schematic view of the positive stop of the present invention installed in the housing body;
FIG. 5 is a cross-sectional view of the present invention;
FIG. 6 is a schematic view of the telescopic conveyor of the present invention reaching the discharge port of the housing;
fig. 7 is a bottom view of the long telescopic housing.
In the figure, 1-a telescopic conveying device, 1.1-a telescopic main body, 1.2-a discharge baffle, 1.21-a baffle main body, 1.22-an eye bolt, 1.23-a wear-resistant baffle, 1.3-a spring, 2-a feed inlet, 3-a shell, 31-a slide block, 32-a profiling baffle, 4-a shell discharge frame and 5-an annular conveying belt; 6-long telescopic shell; 7-inner shell discharge port.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, if directional indications (such as up, down, left, right, front, and back) are provided in the embodiment of the present invention, they are only used to explain the relative position relationship and movement of each component in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
Example one
A telescopic conveying device comprises a telescopic main body 1.1, a discharge baffle plate 1.2 and a baffle plate limiting mechanism, wherein the upper end of the discharge baffle plate 1.2 is rotatably connected with the telescopic main body 1.1;
baffle stop gear is fixed to be set up in discharge baffle 1.2 left side, sets up the inclined plane that is used for spacing discharge baffle 1.2 on the baffle stop gear, when discharge baffle 1.2 moves left and contacts baffle stop gear, discharge baffle 1.2 is backed out to rotate along baffle stop gear's inclined plane gradually right, according to discharge baffle 1.2's displacement self-adaptation regulation discharge baffle 1.2 below opening size.
Furthermore, in this embodiment, the baffle limiting mechanism is a copying stopper 32, the copying stopper 32 is fixedly disposed on the left side of the discharge baffle 1.2, and an inclined plane formed on the copying stopper 32 is inclined from the upper left to the lower right.
Further, discharge baffle 1.2 includes baffle main part 1.21 and wear-resisting baffle 1.23 in this embodiment, and baffle main part 1.21 upper end is rotated and is connected flexible main part 1.1, and wear-resisting baffle 1.23 fixed connection baffle main part 1.21 one side, and eyebolt 1.22 is fixed to be set up on wear-resisting baffle 1.23, and wear-resisting baffle 1.23 and baffle stop gear are located discharge baffle 1.2 with one side.
Further, in the present embodiment, in a short-distance working state (that is, the discharge port of the telescopic main body 1.1 does not reach the discharge port of the housing), the telescopic main body 1.1 and the discharge baffle 1.2 are combined to form an arc plate with a semicircular cross section, so as to block dust generated by transportation of the scraper conveyor. Under the long distance operating condition (the discharge gate of flexible main part 1.1 reaches shell discharge frame 4 top promptly), the material that transports gets into the lower floor along the circular arc of endless conveyor 5 and scrapes the material track to discharge the material shell discharge frame 4.
Further, the upper end of the discharging baffle plate 1.2 in the embodiment is hermetically hinged with the telescopic main body 1.1 and used for blocking dust generated in the transportation process of the scraper conveyor.
The utility model provides a scraper conveyor, it has the aforesaid to load on it a flexible conveyor, still include annular transmission band 5, long flexible casing 6 and shell 3, flexible main part 1.1 is fixed to be set up at the scraper conveyor right-hand member, annular transmission band 5 is fixed to be set up inside long flexible casing 6, baffle stop gear is fixed to be set up at the inside middle-end of shell 3, flexible main part 1.1 is fixed to be set up at long flexible casing 6 right-hand member, inner shell discharge gate 7 is seted up to long flexible casing 6 right side lower extreme, long flexible casing 6 slides and sets up inside shell 3.
Further, including shell ejection of compact frame 4 in this embodiment, 3 lower extremes of shell of 4 fixed connection of shell ejection of compact frame, the shell discharge gate is seted up to 3 lower extremes of shell, and shell discharge gate intercommunication shell ejection of compact frame 4, baffle stop gear is located shell discharge gate top.
Further, in the present embodiment, the housing 3 is a hollow frame, and the long telescopic housing 6 is a hollow frame.
Further, including feed inlet 2 in this embodiment, set up feed inlet 2 on the shell 3, feed inlet 2 is located the annular conveyer belt 5 top.
Further, the present embodiment includes a sliding block 31, the sliding block 31 is fixedly disposed at the front and rear sides of the endless conveyor 5, and sliding grooves for matching with the sliding block 31 are disposed at the front and rear sides inside the housing 3.
The telescopic conveying device 1 and the shell 3 are in relative sliding, the telescopic conveying device 1 is a semi-closed scraper conveyor independently, the annular conveying belt 5 in the telescopic conveying device 1 rotates clockwise, materials enter from the feeding hole 2 of the telescopic conveying device, the materials are conveyed through the upper layer of the annular conveying belt 5 and pass through the circular arc section of the annular conveying belt 5, and the materials are conveyed by scraping plates at the lower layer of the annular conveying belt 5. The lower mode of the telescopic conveying device 1 is open, and when the lower layer of the annular conveying belt 5 scrapes materials, the materials are scraped by friction by utilizing a scraping plate of the annular conveying belt 5 and a bottom plate of the shell 3. When the discharge port 7 of the inner shell of the telescopic conveying device 1 does not reach the discharge port of the outer shell 3, the lower layer is always used for scraping and conveying the materials to the discharge port of the outer shell; when the whole telescopic movement of the telescopic conveying device 1 reaches the maximum position, the inner shell discharge port 7 of the telescopic conveying device 1 reaches the discharge port of the outer shell 3, at the moment, the materials conveyed by the telescopic conveying device 1 can be directly discharged along the arc and discharged from the outer shell discharge port of the outer shell 3, but the arc has a certain radian, the materials have inertia, if the discharge port of the telescopic conveying device 1 is fixed, a part of the materials can move to the right side of the outer shell 3 along the arc tangent line and can not be discharged from the outer shell discharge port, so the inner shell discharge port 7 of the telescopic conveying device 1 is arranged to be movable, the telescopic conveying device 1 is telescopic to a specified position, the discharge baffle plate 1.2 touches the profile modeling check block 32 fixedly installed on the outer shell 3, the discharge baffle plate 1.2 can be opened by a certain angle, as shown in fig. 6, the materials moved by the annular conveying belt 5 can be discharged from the outer shell discharge port.
Example two
As shown in fig. 1, a scraper conveyor comprises a telescopic conveying device 1, a feeding port 2, a shell 3 and a shell discharging frame 4. The telescopic conveying device 1 slides in the shell 3 through the sliding block 31, the shell 3 is fixedly placed on the ground, conveyed materials enter from the feeding hole 2, and flow out from the shell discharging frame 4.
The profiling stop block 32 is a trapezoidal plate, the wear-resistant baffle plate 1.23 is a rectangular plate, the shell 3 is a square frame, the left end of the shell 3 is provided with an opening matched with the annular conveying belt 5, the shell discharging frame 4 is a frame body with a quadrangular frustum shape, and the sliding block 31 is a block.
The elastic fastening piece is a spring 1.3, as shown in fig. 2, the tail part of the telescopic conveying device 1 is provided with a shell discharging port shell discharging frame 4, and the discharging baffle plate 1.2 is connected to the telescopic main body 1.1 through a hinge and tensioned through the spring 1.3, so that the discharging baffle plate is always attached to the telescopic main body 1.1 to keep a sealing state.
As shown in fig. 3, the discharge baffle 1.2 includes a baffle main body 1.21, an eye bolt 1.22 and a wear-resistant baffle 1.23, and the wear-resistant baffle 1.23 is made of a wear-resistant material and is fixed on the side of the baffle main body 1.21 by the eye bolt 1.22, a common bolt and a nut. The wear-resistant baffle 1.23 is replaceable.
As shown in fig. 4, the shell 3 includes a shell main body 31 and a copying stopper 32, the copying stopper 32 is connected to the shell main body 31 by bolts or welding, the copying stopper 32 is used for stopping the discharge baffle 1.2, the wear-resistant baffle 1.23 of the discharge baffle 1.2 moves along an inclined plane, and the opening and closing angle is increased to adapt to the position of the shell discharge frame 4.
As shown in fig. 5, before the discharge baffle plate 1.2 reaches the position of the profiling stopper 32, the material enters from the feed inlet 2, is conveyed to the lower layer through the scraper on the endless conveyor 5, and is conveyed to the casing discharge frame 4 at the lower layer through the friction between the scraper on the endless conveyor and the casing 3.
As shown in fig. 6, after the discharge baffle plate 1.2 reaches the position of the copying stopper 32, the discharge baffle plate 1.2 is pushed open by the copying stopper 32 through the wear-resistant baffle plate 1.23, so that the discharge surface area between the right side of the discharge baffle plate 1.2 and the shell discharge frame 4 is automatically increased, and the material enters the shell discharge frame 4 below. The spring 1.3 makes the wear-resistant baffle plate 1.23 and the inclined plane of the profiling baffle 32 always cling tightly, and ensures that the angle of the discharge baffle plate 1.2 is uniformly changed along with the inclined plane of the profiling baffle 32.
The invention provides a self-adaptive adjusting discharge port of a scraper conveyor, which can be automatically opened and closed according to the telescopic length, so that the scraper conveyor can be conveyed at the maximum conveying capacity at any position without manual adjustment. Compared with the prior art, the method has the following advantages:
1. the shell 3 is arranged, so that the problem of overlarge dust in the material conveying process of the movable/telescopic scraper conveyor is solved. According to the telescopic scraper conveyor, the shell 3 is added, so that the telescopic scraper conveyor can move in the shell 3 all the time, the discharge baffle 1.2 is in a circular arc shape, materials on the upper layer are conveyed through the scraper of the annular conveyor 5, and materials on the lower layer are conveyed through the friction between the scraper of the annular conveyor 5 and the shell 3, so that the dust content of the environment is reduced; when the flexible conveyor of needs during operation, slide flexible conveyor right, remove flexible conveyor to shell material frame 4 top, the material that drops in shell 3 is transported to the scraper blade of annular transmission band 5 and the friction of shell 3, need not artifical clean shell 3, and work efficiency is high.
2. The problem that the movable/telescopic scraper conveyor is single in discharging direction and cannot adapt to the size of an opening of a hopper below is solved. The discharge port of the conveyor adopts a movable baffle plate and a top plate, the size of the discharge port is self-adaptively adjusted according to the moving or telescopic distance, manual adjustment is not needed, and the operation efficiency is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (10)
1. A telescopic conveying device is characterized by comprising a telescopic main body (1.1), a discharge baffle (1.2) and a baffle limiting mechanism, wherein the upper end of the discharge baffle (1.2) is rotatably connected with the telescopic main body (1.1);
the baffle stop gear is fixed to be set up in discharge baffle (1.2) left side, set up the inclined plane that is used for spacing discharge baffle (1.2) on the baffle stop gear, when discharge baffle (1.2) moved left and contacted baffle stop gear, discharge baffle (1.2) was backed out to rotate along baffle stop gear's inclined plane gradually right, according to the below opening size of discharge baffle (1.2) of displacement self-adaptation regulation discharge baffle (1.2).
2. The telescopic conveying device according to claim 1, wherein the baffle limiting mechanism is a copying stop block (32), the copying stop block (32) is fixedly arranged on the left side of the discharging baffle (1.2), and an inclined surface formed on the copying stop block (32) inclines from the upper left to the lower right.
3. The telescopic conveying device according to claim 2, wherein the discharge baffle (1.2) comprises a baffle main body (1.21) and a wear-resistant baffle (1.23), the upper end of the baffle main body (1.21) is rotatably connected with the telescopic main body (1.1), the wear-resistant baffle (1.23) is fixedly connected with one side of the baffle main body (1.21), the eyebolt (1.22) is fixedly arranged on the wear-resistant baffle (1.23), and the wear-resistant baffle (1.23) and the baffle limiting mechanism are positioned on the same side of the discharge baffle (1.2).
4. The telescopic conveyor device according to claim 1, characterized in that the telescopic body (1.1) and the discharge baffle (1.2) are combined to form an arc plate with a semicircular cross section to shield dust when the telescopic body (1.1) does not reach the discharge port of the casing of the scraper conveyor.
5. The telescopic conveyor device as claimed in claim 1, characterised in that the upper end of the discharge baffle (1.2) is hermetically hinged with the telescopic body (1.1) for blocking dust generated by the scraper conveyor in transportation.
6. The utility model provides a scraper conveyor, its characterized in that, it has right 1 to load a flexible conveyor, still include annular transmission band (5), long telescopic shell (6) and shell (3), flexible main part (1.1) is fixed to be set up at the scraper conveyor right-hand member, annular transmission band (5) are fixed to be set up inside long telescopic shell (6), baffle stop gear is fixed to be set up at the inside middle-end of shell (3), flexible main part (1.1) is fixed to be set up at long telescopic shell (6) right-hand member, inner shell discharge gate (7) are seted up to long telescopic shell (6) right side lower extreme, long telescopic shell (6) slide to set up inside shell (3).
7. The scraper conveyor as claimed in claim 6, comprising a shell discharging frame (4), wherein the shell discharging frame (4) is fixedly connected with the lower end of the shell (3), a shell discharging port is formed in the lower end of the shell (3), the shell discharging port is communicated with the shell discharging frame (4), and the baffle limiting mechanism is positioned above the shell discharging port;
the telescopic main body (1.1) reaches the upper part of the shell discharging frame (4), and conveyed materials enter the lower layer scraping track along the circular arc of the annular conveying belt (5), so that the materials are discharged out of the shell discharging frame (4).
8. Scraper conveyor according to claim 6, characterized in that the housing (3) is a frame with an open inner hollow at the left end.
9. The scraper conveyor of claim 8, characterized in that it comprises a feed inlet (2), the housing (3) is provided with the feed inlet (2), and the feed inlet (2) is located above the endless conveyor belt (5).
10. The scraper conveyor of claim 6, characterized in that it comprises sliding blocks (31), the sliding blocks (31) are fixedly arranged at the front and rear sides of the endless conveyor belt (5), and sliding grooves for matching the sliding blocks (31) are arranged at the front and rear sides inside the housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342607.2A CN114772171B (en) | 2022-04-02 | 2022-04-02 | Telescopic conveying device and scraper conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342607.2A CN114772171B (en) | 2022-04-02 | 2022-04-02 | Telescopic conveying device and scraper conveyor |
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| CN114772171A true CN114772171A (en) | 2022-07-22 |
| CN114772171B CN114772171B (en) | 2023-07-04 |
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