CN110217544B - Quick excavation soil conveying structure for excavator - Google Patents

Quick excavation soil conveying structure for excavator Download PDF

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Publication number
CN110217544B
CN110217544B CN201910565789.8A CN201910565789A CN110217544B CN 110217544 B CN110217544 B CN 110217544B CN 201910565789 A CN201910565789 A CN 201910565789A CN 110217544 B CN110217544 B CN 110217544B
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China
Prior art keywords
soil
conveying
guide
excavator
hopper
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Active
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CN201910565789.8A
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Chinese (zh)
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CN110217544A (en
Inventor
卜凡
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Xuzhou Xinnanhu Technology Co ltd
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Xuzhou Xinnanhu Technology Co ltd
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Priority to CN201910565789.8A priority Critical patent/CN110217544B/en
Publication of CN110217544A publication Critical patent/CN110217544A/en
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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
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/02—Belt- or chain-engaging elements
    • B65G23/04—Drums, rollers, or wheels
    • 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
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
    • 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
    • B65G67/00—Loading or unloading vehicles
    • B65G67/02—Loading or unloading land vehicles
    • B65G67/04—Loading land vehicles
    • 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
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/18—Preventing escape of dust
    • B65G69/185—Preventing escape of dust by means of non-sealed systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F7/00—Equipment for conveying or separating excavated material
    • 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
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B65G2201/045—Sand, soil and mineral ore

Abstract

The invention discloses a rapid excavating and soil conveying structure for an excavator, which is a soil conveying structure for receiving soil poured out of a bucket of the excavator through a soil inlet bucket without the need of the rotation action of the excavator, conveying the soil into a soil conveying pipe through a conveying belt and carrying out closed conveying on the soil through a spiral conveying shaft in the conveying pipe. The excavator does not need to carry out rotary soil pouring action when excavating, carries out real-time conveying on the excavated soil, reduces the excavating time, improves the working efficiency of the excavator, and simultaneously lightens the working intensity of drivers. The soil feeding hopper is characterized in that a guide chute is formed in the bottom of the soil feeding hopper, a plurality of guide hoppers are arranged in the guide chute side by side and are connected in pairs, the width of each guide hopper is gradually reduced from top to bottom, the guide hoppers are obliquely arranged and gradually incline upwards towards the direction of the guide chute along the inlet of the soil feeding hopper, and one ends of a plurality of soil conveying pipes are respectively arranged at the bottom of the soil feeding hopper and correspond to the plurality of guide hoppers one by one.

Description

Quick excavation soil conveying structure for excavator
Technical Field
The invention discloses a rapid excavation and soil conveying structure for an excavator, relates to a soil conveying structure for conveying soil during excavation of the excavator, and belongs to the field of mechanical equipment. In particular to a soil conveying structure which does not need the excavator to perform rotary motion, receives soil poured out of a bucket of the excavator through a soil inlet bucket, then transmits the soil into a soil conveying pipe through a conveying belt, and performs closed conveying on the soil through a spiral conveying shaft in the conveying pipe.
Background
The excavator is also called an excavating machine, is an earthwork machine which excavates materials higher or lower than a bearing surface by a bucket, is filled in a transport vehicle or is discharged to a storage yard, the excavated materials mainly comprise soil, coal, silt and soil and rock after pre-loosening, at present, the operation of the excavator in China always comprises the steps of supporting the excavator bucket in the middle and front part of a trailer through an operating handle after the excavator bucket of the excavator excavates the soil, then rotating an excavator platform, and then pouring the loaded materials into the transport vehicle, so that the whole excavating process is time-consuming and labor-consuming and has lower efficiency.
The publication number CN204662541U discloses an excavator with a storage conveying device, which comprises an excavator body, a loading storage device and a storage conveying device positioned at the tail end of the loading storage device; the loading and storing device comprises a storing hopper with an opening at the rear end and a fixed supporting structure connected with the storing hopper, one end of the fixed supporting structure is fixedly connected to the excavator body, and the other end of the fixed supporting structure is connected with the storing hopper; the storage conveyer is including being fixed in the conveyer belt system of excavator body and with conveyer belt system afterbody connects's hoisting device, hoisting device's one end fixed connection the excavator body, hoisting device's the other end fixed connection conveyer belt system, the device adopts the conveyer belt to carry the dig fast, and in the transportation process, the belt shake causes dust to overflow, takes place the raise dust scene, causes the dust pollution to the construction environment.
Disclosure of Invention
In order to improve the situation, the quick excavating and conveying structure for the excavator provided by the invention is free from the rotation action of the excavator, the soil poured out of the bucket of the excavator is received through the soil inlet bucket and then is conveyed into the soil conveying pipe through the conveying belt, and the soil is conveyed in a closed mode through the spiral conveying shaft in the conveying pipe. The excavator does not need to carry out rotary soil pouring action when excavating, carries out real-time conveying on the excavated soil, reduces the excavating time, improves the working efficiency of the excavator, and simultaneously lightens the working intensity of drivers.
The invention discloses a rapid excavation and soil conveying structure for an excavator, which is realized by the following steps: the invention relates to a rapid excavating soil conveying structure for an excavator, which consists of a conveying motor, a soil conveying pipe, a soil outlet guide plate, a supporting rod, a fixed platform, a fixed rod, a driving motor, a soil inlet hopper, a conveying belt, guide hoppers, a spiral conveying shaft, rollers and triangular strips, wherein the bottom of the soil inlet hopper is provided with a guide groove, the guide hoppers are arranged in the guide groove side by side and connected with each other, the guide hoppers are connected with the soil inlet hopper, the width of the guide hoppers is gradually reduced from top to bottom, the guide hoppers are obliquely placed, and gradually incline upwards along the direction of an inlet of the soil inlet hopper towards the guide groove, one ends of a plurality of soil conveying pipes are respectively arranged at the bottom of the soil inlet hopper and correspond to the guide hoppers one by one, one end of each soil conveying pipe is provided with a feed groove corresponding to the position of the guide hopper, the guide hoppers are communicated with the guide hoppers, the soil conveying pipes are arranged side by side, the two guide hoppers are connected with each other, the other end of each soil conveying pipe extends obliquely upwards towards the direction far away from the soil inlet hopper, the same inclination angle, the guide hoppers are connected with the guide hoppers are arranged in the motor shaft, the width of the guide hoppers is gradually reduced from top to bottom, the guide pipes are arranged at the motor shaft, the other, the ends of the guide pipes are arranged at the end of the guide pipes are hinged to the guide pipes are arranged at one end close to one end of the guide hopper, one end of the guide hopper is hinged to the guide hopper is arranged at one end, one end close to the guide hopper is hinged to the guide hopper, one end, the guide hopper is arranged at one end, the other end is hinged to the soil conveying hopper is arranged at the end, and the other end side, and the other end is far away the side, and the side is far side, and the side and has the side upwards side and upwards and far away and far side and the and far. The shafts at two ends of the roller wheels are respectively arranged on two inner side walls of the soil inlet hopper through bearings, the conveyor belt is sleeved on the roller wheels, a gap is arranged between the side edge of the conveyor belt and the inner side wall of the soil inlet hopper, the conveyor belt is divided into three sections, the middle section is an inclined section, the two outer sections are horizontal sections, the inclined sections of the conveyor belt incline upwards gradually along the direction of the soil inlet hopper inlet towards the guide chute, the length of the inclined sections of the conveyor belt is greater than one half of the total length of the conveyor belt, the driving motor is arranged on the outer wall of one side of the soil inlet hopper, the motor shaft of the driving motor is connected with the roller wheel farthest from the soil inlet hopper inlet, a plurality of triangular strips are arranged on the conveying surface of the conveyor belt, the two triangular strips which are opposite up and down are in a group, the triangular strips extend from one side edge of the conveyor belt to the other side edge, the triangular strips and the conveyor belt are integrally formed, the triangular strips are made of rubber materials, and a plurality of mounting holes are formed on the fixing platform;
further, a dust cover is arranged at the bottom of the unearthed guide plate, and the diameter of the dust cover is gradually increased from top to bottom.
Has the beneficial effects of.
1. The excavator does not need to carry out rotary soil pouring action when excavating, carries out real-time conveying on the excavated soil, reduces the excavating time, improves the working efficiency of the excavator, and simultaneously lightens the working intensity of drivers.
2. The spiral conveying mode is used for conveying soil in a closed environment, so that dust emission phenomenon is avoided, and a good construction operation environment is effectively ensured.
3. Belt friction conveying, conveying is lower, spiral conveying is higher than belt conveying efficiency, and conveying stability is good.
4. The guide plate that unearths has the dust cover, effectively prevents that soil from falling into the excessive of dust when transporting.
Drawings
FIG. 1 is a perspective view of a rapid excavation soil transport structure for an excavator in accordance with the present invention;
FIG. 2 is a schematic view of a structure for rapidly excavating an earth moving structure of an excavator according to the present invention;
FIG. 3 is a schematic view of a rapid excavation soil conveying structure soil intake bucket for an excavator in accordance with the present invention;
FIG. 4 is a schematic view of the structure of the present invention in use for a rapid excavation soil delivery structure for an excavator;
FIG. 5 is a schematic view of an embodiment 2 of a rapid excavation soil delivery structure for an excavator in accordance with the present invention;
in the accompanying drawings
Wherein the method comprises the following steps: the soil conveying device comprises a conveying motor (1), a soil conveying pipe (2), a soil outlet guide plate (3), a supporting rod (4), a fixed platform (5), a fixed rod (6), a driving motor (7), a soil inlet hopper (8), a conveying belt (9), a guide hopper (10), a spiral conveying shaft (11), a roller (12), triangular strips (13), an excavator body (14) and a dust cover (15).
The specific embodiment is as follows:
example 1:
the invention discloses a rapid excavating and soil conveying structure for an excavator, which is realized by a conveying motor (1), a soil conveying pipe (2), a soil outlet guide plate (3), a supporting rod (4), a fixed platform (5), a fixed rod (6), a driving motor (7), a soil inlet hopper (8), a conveying belt (9), a guide hopper (10), a spiral conveying shaft (11), a roller (12) and triangular strips (13), wherein the bottom of the soil inlet hopper (8) is provided with a guide groove, a plurality of guide hoppers (10) are arranged in the guide groove side by side and are connected with each other, the width of the guide hoppers (10) is gradually reduced from top to bottom, the guide hoppers (10) are obliquely arranged, the inlets of the plurality of the soil conveying pipes (2) are gradually inclined upwards towards the guide groove direction, one ends of the plurality of the soil conveying pipes (2) are respectively arranged at the bottom of the soil inlet hopper (8) and correspond to the guide hoppers (10), one ends of the guide hoppers (2) are corresponding to the guide hoppers (10) and are obliquely arranged at the positions of the guide hoppers (10) and are obliquely arranged at the other ends of the guide hoppers (2) and are far away from the guide grooves (10) which are obliquely connected with the soil inlet pipes (2), the soil conveying pipe (2) is internally provided with a spiral conveying shaft (11), the other end of the soil conveying pipe (2) is provided with a conveying motor (1), a motor shaft of the conveying motor (1) is connected with one end of the spiral conveying shaft (11) in the soil conveying pipe (2), the other end of the spiral conveying shaft (11) is rotatably arranged on one end face of the soil conveying pipe (2), the bottom of the soil conveying pipe (2) close to the other end is provided with a discharging groove, a soil outlet guide plate (3) is arranged at the bottom of the soil conveying pipe (2) and corresponds to the discharging groove, the bottom of the soil conveying pipe (2) is provided with a supporting rod (4), and a fixed platform (5) is arranged on the soil conveying pipes (2), the fixed platform (5) is of a trapezoid structure, one ends of two fixed rods (6) are respectively hinged on two side walls of the soil inlet bucket (8) through hinge shafts, a conveying groove is formed in the bottom of the soil inlet bucket (8), the conveying groove is close to an inlet of the soil inlet bucket (8), a plurality of rollers (12) are respectively arranged in the conveying groove, shafts at two ends of the rollers (12) are respectively arranged on two inner side walls of the soil inlet bucket (8) through bearings, a conveying belt (9) is sleeved on the rollers (12), a gap is formed between the side edge of the conveying belt (9) and the inner side wall of the soil inlet bucket (8), the conveying belt (9) is divided into three sections, and the middle section is an inclined section, the outer two sections are horizontal sections, the inclined section of the conveying belt (9) gradually inclines upwards along the direction of the inlet of the soil inlet hopper (8) towards the guide chute, the length of the inclined section of the conveying belt (9) is larger than half of the total length of the conveying belt (9), the driving motor (7) is arranged on the outer wall of one side of the soil inlet hopper (8), a motor shaft of the driving motor (7) is connected with a roller (12) farthest from the inlet of the soil inlet hopper (8), a plurality of triangular strips (13) are arranged on the conveying surface of the conveying belt (9), two triangular strips (13) which are opposite up and down are in a group, the triangular strips (13) extend from one side edge of the conveying belt (9) to the other side edge, the triangular strips (13) and the conveying belt (9) are integrally formed, the triangular strips (13) are made of rubber materials, and a plurality of mounting holes are formed in the fixing platform (5);
when the excavator is used, firstly, the soil conveying structure is fixedly arranged on the excavator through the fixing rod (6), the fixing platform (5) and the supporting rod (4), the soil inlet hopper (8) is arranged below the excavator bucket, the soil outlet guide plate (3) is arranged at the rear side of the excavator and opposite to the transport vehicle, when the excavator excavates soil, the shoveled soil only needs to be pushed or dumped into the soil inlet hopper (8) arranged at one side of the bucket, the driving motor (7) drives the roller (12) to rotate, the driving belt (9) rotates to push the soil into the guide hopper (10), the soil enters the soil conveying pipe (2) through the guide hopper (10), at the moment, the conveying motor (1) starts to drive the spiral conveying shaft (11) in the soil conveying pipe (2) to rotate, and the spiral conveying shaft (11) lifts and conveys the soil upwards to the position of the soil outlet guide plate (3) in the process, so that the soil falls downwards along the soil outlet guide plate (3) into the transport vehicle;
example 2:
the differences between this example and example 1 are: a dust cover (15) is arranged at the bottom of the unearthed guide plate (3), and the diameter of the dust cover (15) is gradually increased from top to bottom; when in use, the dust can be prevented from falling into the transportation vehicle,
the width of the guide hopper (10) is gradually reduced from top to bottom, so that the opening of the guide hopper (10) is larger, and soil is convenient to enter the guide hopper (10);
the other end of the soil conveying pipe (2) extends upwards in an inclined way in a direction away from the soil inlet hopper (8), and the inclination angle is the same as that of the guide hopper (10), so that the distance between the outlet of the guide hopper (10) and the spiral conveying shaft (11) is consistent, and soil can conveniently enter the soil conveying pipe (2) from the guide hopper (10);
the conveying belt (9) is divided into three sections, the middle section is an inclined section, and the two outer sections are horizontal sections, so that soil can be lifted upwards to a certain extent in the soil inlet hopper (8), and the upward lifting height of the spiral conveying shaft (11) is reduced;
the design that the length of the inclined section of the conveyor belt (9) is greater than one half of the total length of the conveyor belt (9) can enable the conveyor belt (9) to lift soil upwards to a greater extent, and the upward lifting conveying effect is better;
a plurality of triangular strips (13) are arranged on the conveying surface of the conveying belt (9), and the two triangular strips (13) which are opposite up and down are designed into a group, so that the conveying friction force can be increased, and the soil conveying effect can be improved;
the triangular strips (13) and the conveying belt (9) are integrally formed, so that the connecting strength is good, and the triangular strips are not easy to fall off;
the feeding hopper is matched with the conveying belt (9) and can directly receive soil poured by the bucket and carry out preliminary conveying on the soil;
the soil conveying pipe (2) is matched with the spiral conveying shaft (11), so that soil can be conveyed in a closed mode, and dust is prevented from flying;
the feeding hopper is positioned below the bucket, and is used for receiving the design of the soil poured by the bucket, so that the excavator does not need to perform rotary motion, and the soil conveying efficiency is improved;
after the soil inlet hopper (8) receives soil, the driving motor (7) drives the conveying belt (9) to work, so that the soil in the soil inlet hopper (8) can be conveyed and conveyed into the conveying pipe, and the next step of closed conveying can be conveniently carried out;
soil enters the soil conveying pipe (2) along the guide hopper (10), and the conveying motor (1) works to drive the spiral conveying shaft (11) to rotate, so that the soil in the soil conveying pipe (2) can be lifted and conveyed to the position of the soil outlet guide plate (3) in the rotating process of the spiral conveying shaft (11);
the purpose that the excavator does not need to perform rotary motion, the soil poured out of the excavator bucket is received through the soil inlet bucket (8), then the soil is transmitted into the soil conveying pipe (2) through the conveying belt (9), and the soil is conveyed in a closed mode through the spiral conveying shaft (11) in the conveying pipe is achieved.
The above embodiments are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.

Claims (7)

1. A excavate defeated soil structure fast for excavator, characterized by: the soil conveying device comprises a conveying motor, a soil conveying pipe, a soil discharging guide plate, a supporting rod, a fixing platform, a fixing rod, a driving motor, a soil feeding bucket, a conveying belt, guide hoppers, screw conveying shafts, rollers and triangular strips, wherein the bottom of each soil feeding bucket is provided with a guide chute, a plurality of guide hoppers are arranged in the guide chute side by side and are connected with each other, the guide hoppers are connected with the soil feeding buckets in pairs, one ends of the soil conveying pipes are respectively arranged at the bottoms of the soil feeding hoppers and correspond to the guide hoppers one by one, the positions of one ends of the soil conveying pipes corresponding to the guide hoppers are provided with feed chutes and are communicated with the guide hoppers, a plurality of soil conveying pipes are arranged side by side and are connected with each other in pairs, the other ends of the soil conveying pipes extend obliquely upwards in the direction away from the soil feeding bucket, the inclination angles are the same as the guide hoppers, the screw conveying shafts are arranged in the soil conveying pipes, the conveying motors are arranged at the other ends of the soil conveying pipes, the motor shaft of the conveying motor is connected with one end of a spiral conveying shaft in the soil conveying pipe, the other end of the spiral conveying shaft is rotatably arranged on the end face of one end of the soil conveying pipe, a discharging groove is formed in the bottom of the position, close to the other end, of the soil conveying pipe, a soil outlet guide plate is arranged at the bottom of the soil conveying pipe and corresponds to the discharging groove, a supporting rod is arranged at the bottom of the soil conveying pipe, a fixed platform is arranged on a plurality of soil conveying pipes, one ends of the two fixed rods are respectively hinged on two side walls of a soil inlet hopper through a hinged shaft, a conveying groove is formed in the bottom of the soil inlet hopper, the conveying groove is close to an inlet of the soil inlet hopper, a plurality of rollers are respectively arranged in the conveying groove, shafts at the two ends of the rollers are respectively arranged on the two inner side walls of the soil inlet hopper through bearings, a plurality of rollers are sleeved on the conveying belt, a driving motor is arranged on the outer wall of one side of the soil inlet hopper, and the motor shaft of the driving motor is connected with the roller furthest from the inlet of the soil inlet hopper, the fixed platform is provided with a plurality of mounting holes, the bottom of the unearthed guide plate is provided with a dust cover, the diameter of the dust cover is gradually increased from top to bottom, the conveying belt is divided into three sections, the middle section is an inclined section, the outer two sections are horizontal sections, the width of the guide hopper is gradually reduced from top to bottom, the guide hopper is obliquely arranged, and gradually inclines upwards along the direction of the inlet of the soil inlet hopper towards the guide chute.
2. A rapid excavation soil delivery structure for an excavator as claimed in claim 1 wherein the inclined section of the conveyor belt is progressively inclined upwardly in the direction of the hopper inlet towards the chute.
3. A rapid excavation soil delivery structure for an excavator as claimed in claim 1 or claim 2 wherein the length of the inclined section of the conveyor belt is greater than one half of the total length of the conveyor belt.
4. A rapid excavation soil delivery structure for an excavator as claimed in claim 3, wherein a gap is provided between the side edges of the conveyor belt and the inner side walls of the hopper.
5. The rapid excavation soil delivery structure for an excavator of claim 4 wherein the conveying surface of the conveyor belt is provided with a plurality of triangular strips and two triangular strips which are opposite one another are arranged in a group.
6. A rapid excavation soil delivery structure for an excavator as claimed in claim 5, wherein the triangular strips extend from one side of the conveyor belt to the other.
7. A rapid excavation soil delivery structure for an excavator as claimed in either of claims 4 and 5, wherein the triangular strips and conveyor belt are integrally formed.
CN201910565789.8A 2019-06-27 2019-06-27 Quick excavation soil conveying structure for excavator Active CN110217544B (en)

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Application Number Priority Date Filing Date Title
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CN110217544B true CN110217544B (en) 2023-07-07

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Publication number Priority date Publication date Assignee Title
CN112407982A (en) * 2020-10-09 2021-02-26 威远创源运业有限公司 Shale gas drilling oil base discarded object is cleared and is dug device
CN112576275A (en) * 2020-12-03 2021-03-30 重庆文理学院 Treatment device and method for quickly cleaning silt in tunnel construction

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Publication number Priority date Publication date Assignee Title
CN206886034U (en) * 2017-07-15 2018-01-16 牟星 A kind of belt earth-retaining device during shield-tunneling construction

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Publication number Priority date Publication date Assignee Title
FR2629497B1 (en) * 1988-03-31 1992-05-07 Rabaud Ets CONTINUOUS MATERIALS PICKUP AND LOADING MACHINE
CN203781398U (en) * 2014-04-08 2014-08-20 孟芹 Loading system and energy-saving loading device thereof
CN204662541U (en) * 2015-04-30 2015-09-23 湖南省工业设计协会 A kind of excavator with storing conveyer
CN206693296U (en) * 2017-05-16 2017-12-01 河南新友工程机械有限公司 A kind of road construction excavating equipment
CN208856532U (en) * 2018-08-22 2019-05-14 四川中科珺节能环保科技有限公司 Feeding device is used in a kind of production of rotary kiln

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CN206886034U (en) * 2017-07-15 2018-01-16 牟星 A kind of belt earth-retaining device during shield-tunneling construction

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