CN111547458A - Reciprocating steel pipe or section steel dragging device and working method - Google Patents
Reciprocating steel pipe or section steel dragging device and working method Download PDFInfo
- Publication number
- CN111547458A CN111547458A CN202010310552.8A CN202010310552A CN111547458A CN 111547458 A CN111547458 A CN 111547458A CN 202010310552 A CN202010310552 A CN 202010310552A CN 111547458 A CN111547458 A CN 111547458A
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- pipe
- steel
- support
- steel pipe
- section steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 163
- 239000010959 steel Substances 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 230000000903 blocking effect Effects 0.000 claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000007723 transport mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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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
- B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
- B65G25/04—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors
- B65G25/06—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors having carriers, e.g. belts
- B65G25/065—Reciprocating floor 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
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0276—Tubes and pipes
Abstract
The invention relates to a reciprocating steel pipe or section steel dragging device and a working method thereof, wherein the reciprocating steel pipe or section steel dragging device comprises a transmission mechanism, the transmission mechanism is connected with a support and can drive the support to move, the support is rotatably connected with a pipe clamping piece, the pipe clamping piece and the support can fix a steel pipe or section steel to be transported together, the pipe clamping piece is connected with one end of an elastic piece, the other end of the elastic piece is connected with a blocking piece arranged on the support, the blocking piece is arranged on one side of the pipe clamping piece and is used for limiting the maximum opening angle of the pipe clamping piece and the support, and the elastic piece can drive the pipe clamping piece and the support to open to form a set angle.
Description
Technical Field
The invention relates to the technical field of steel pipe or section steel production, in particular to a reciprocating steel pipe or section steel dragging device and a working method.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Along with the rapid development of underground engineering construction, highway and railway tunnels, subways, coal mine tunnels and the like are more and more widely constructed, and the steel pipe concrete arch frame has high bearing capacity and simple construction and becomes a measure widely adopted in the fields of deep weak surrounding rock sections and other underground engineering supports. Meanwhile, the steel pipe is used for manufacturing the highway bridge, so that the weight can be reduced, the metal can be saved by 20-40%, the construction is simplified, the factory and mechanical construction can be realized, and the investment and maintenance cost can be saved. In the production process of a workshop, a plurality of steel pipe production enterprises need to transport steel pipes from one production link to another production link, and mostly adopt hoisting operation or rely on manual handling. The inventor finds that the operation environment of the transportation mode is complex, the transportation mode needs to be operated in a larger scale, time and labor are wasted, the labor intensity is high, the safety of equipment operators can be threatened to a certain extent, and the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a reciprocating steel pipe or section steel dragging device, which reduces the labor intensity of workers and improves the transportation efficiency of steel pipes or section steel.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the invention provides a reciprocating steel pipe or section steel dragging device, which is characterized by comprising a transmission mechanism, wherein the transmission mechanism is connected with a support and can drive the support to move, the support is rotatably connected with a pipe clamping piece, the pipe clamping piece and the support can jointly fix a steel pipe or section steel to be transported, the pipe clamping piece is connected with one end of an elastic piece, the other end of the elastic piece is connected with a blocking piece arranged on the support, the blocking piece is arranged on one side of the pipe clamping piece and used for limiting the maximum opening angle of the pipe clamping piece and the support, and the elastic piece can drive the pipe clamping piece and the support to open to form a set angle.
In a second aspect, an embodiment of the present invention provides a working method of a reciprocating steel pipe or section steel dragging device, including: under the effect of elastic component, the card tube sheet opens the settlement angle with the support, card tube sheet and support block steel pipe or shaped steel, transport mechanism drives card tube sheet and support forward motion, drag steel pipe or shaped steel to setting for the position, transport mechanism drives card tube sheet and support reverse motion, when through the steel pipe or shaped steel of not transporting, under the action of gravity of the steel pipe or shaped steel of not transporting, the contained angle of card tube sheet and support reduces, card tube sheet and support can pass through from the steel pipe or the shaped steel below of not transporting, card tube sheet is with the steel pipe or the shaped steel separation back of not transporting, under the effect of elastic component, the card tube sheet resets, open the settlement angle with the support, can carry out the dragging of next steel pipe or shaped steel.
The invention has the beneficial effects that:
according to the reciprocating steel pipe or section steel dragging device, the steel pipe or section steel is driven to move through the transmission mechanism, the pipe clamping plate and the support, the steel pipe or section steel does not need to be hoisted or manually transported in a production workshop, potential safety hazards caused by hoisting or manual transportation of the steel pipe or section steel are avoided, the transportation efficiency of the steel pipe or section steel is improved, the labor intensity of workers is greatly reduced, the pipe clamping plate and the support can be smoothly and quickly reset through the arrangement of the elastic piece and the pipe clamping plate, and the steel pipe is dragged to realize quick circulation.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a plan view of the whole structure of embodiment 1 of the present invention;
FIG. 2 is a side view of the whole structure of embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a power mechanism according to embodiment 1 of the present invention;
FIG. 4 is a schematic front view of a support and a pipe clamping plate driving a steel pipe to advance according to embodiment 2 of the present invention;
FIG. 5 is a side view of the bracket and the pipe clamping plate of example 2 of the present invention in a state of being retracted through the steel pipe;
the automatic positioning device comprises a chain transmission mechanism 1, a support frame 2, a power mechanism frame body 3, a motor 4, a speed reducer 5, a control system 6, a support 7, a fixing block 8, a positioning wheel 9, a positioning guide rail 10, a steel shaft 11, a pipe clamping plate 12, a blocking piece 13, a spring 14, a carrier roller frame 15, a carrier roller 16, a signaler 17 and a steel pipe 18.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Just as the introduction of background art, hoist and mount or artifical transport are adopted in the transportation of present steel pipe or shaped steel, and work efficiency is low, and intensity of labour is big, and has certain potential safety hazard, to above-mentioned problem, this application has proposed a reciprocating type steel pipe or shaped steel drive device.
In an exemplary embodiment of the present application, as shown in fig. 1 to 3, an example 1 of a reciprocating steel pipe or section steel dragging device includes a transportation mechanism, the transportation mechanism employs a chain transmission mechanism 1, in this embodiment, the chain transmission mechanism employs a double-row chain transmission mechanism, and includes a driving sprocket, a driven sprocket and two parallel transmission chains, and the two transmission chains are connected by a chain buckle. Can be synchronous motion, driving sprocket is connected with power unit, and driven sprocket rotates with the driven shaft to be connected, and the driven shaft both ends are fixed on the driven shaft support body, the driven shaft support body is fixed on support frame 2.
The chain transmission mechanism is connected with the power mechanism, the power mechanism can drive the chain transmission mechanism to work, the power mechanism is fixed on the power mechanism frame body 3 and comprises a motor 4, an output shaft of the motor is connected with a speed reducer 5, and an output shaft of the speed reducer is connected with a driving chain wheel of the chain transmission mechanism and can drive the driving chain wheel to rotate. Through the setting of speed reducer, can realize the slow motion of driving chain, guarantee the stability of steel pipe or shaped steel transportation.
The motor is connected with the control system 6, and the control system can control the work of the motor.
The transmission chain of the chain transmission mechanism is connected with the support 7, the support can be driven to move by the movement of the chain transmission mechanism, specifically, a plurality of fixing blocks 8 are arranged on the bottom surface of the support, the fixing blocks are inserted into gaps between two adjacent chain buckles of the transmission chain, and the transmission chain can drive the fixing blocks to move through the chain buckles, so that the support is driven to move.
In other embodiments, the brackets are fixedly connected with the transmission chain in a welding mode or detachably and fixedly connected with the transmission chain through bolts, so long as the requirement that the transmission chain can drive the brackets to move is met.
The support is connected with a clamping pipe fitting in a rotating mode, the clamping pipe fitting can clamp a steel pipe or profile steel to be transported together with the support, and the steel pipe or the profile steel is dragged to move.
Two sides of the support are rotatably connected with positioning wheels 9 through wheel shafts, and each side of the support is provided with two positioning wheels.
The positioning wheels are embedded into positioning guide rails 10 arranged on two sides of the chain transmission mechanism, the positioning guide rails are channel steel matched with the positioning wheels, in other embodiments, the positioning guide rails can also be I-shaped steel or other section steel matched with the positioning wheels, and the channel steel is fixed on the supporting frame. When the pipe clamping piece and the support push the steel pipe or the section steel to advance, the pipe clamping piece and the support can be influenced by left and right deflection force due to the fact that the pipe clamping piece and the support move forward through the utilization of the transmission chain, and left and right shaking caused by overlarge gaps is prevented through the arrangement of the positioning guide rail and the positioning wheel.
Be provided with steel axle 11 on the support, the steel axle rotates with the one end of card pipe fitting to be connected, and card pipe fitting can rotate around the steel axle, and then realizes the change with the support contained angle, and when card pipe fitting and support opened, steel pipe or shaped steel can get into the space between card pipe fitting and the support, utilize the card pipe fitting to promote advancing of steel pipe or shaped steel.
In this embodiment, the pipe clamping piece adopts pipe clamping plate 12, pipe clamping plate is used for the surface that contacts with the steel pipe for with steel pipe assorted arcwall face, simultaneously, the support surface that is used for on one side of the steel shaft and contacts with the steel pipe is the arcwall face, pipe clamping plate and support can pass through arcwall face and steel pipe laminating.
In other embodiments, the shapes of the surfaces of the pipe clamping plate and the bracket are set to match the shape of the section steel to be dragged, so long as the steel pipe or the section steel to be transported can be clamped.
The steel shaft is characterized in that one side of the steel shaft is used as a space for clamping the steel pipe or the section steel with the bracket through the pipe clamping piece, the other side of the steel shaft is provided with a blocking piece 13, the blocking piece is fixed on the bracket and used for limiting the maximum included angle between the pipe clamping piece and the bracket, and the pipe clamping piece is prevented from dragging the steel pipe or the section steel at an overlarge rotating angle in the process.
In this embodiment, the cross-sectional shape of the blocking member is a triangle, and in other embodiments, the cross-sectional shape of the blocking member may be a square or a rectangle or other shapes as long as the maximum rotation angle of the pipe clamping member can be limited.
An elastic part is arranged between the blocking part and the pipe clamping part, the elastic part adopts a spring 14, one end of the spring is fixedly connected with the pipe clamping part, and the other end of the spring is fixedly connected with the blocking part.
The elasticity of the spring can enable the pipe clamping piece and the support to be opened to form a set included angle, and the spring can enable the pipe clamping piece to fasten a steel pipe or profile steel to be transported, so that the steel pipe or the profile steel is prevented from loosening.
The two sides of the chain transmission mechanism are provided with roller frames 15, the roller frames are connected with a plurality of carrier rollers 16 in a rotating mode, each carrier roller comprises a carrier roller shaft and a carrier roller shell fixed to the periphery of the carrier roller shaft, the carrier roller shafts are rotatably connected with the roller frames through bearings, the carrier roller shells are of cylindrical structures, edges and corners do not exist on the surfaces, abrasion to materials is small, the service life is prolonged, and the carrier rollers are used for supporting steel pipes or section steel.
The chain drive mechanism's head and the tail both ends still are provided with annunciator 17, and the annunciator of its one end sets up on the power unit support body, and the annunciator of the other end sets up the tip at the support frame, the annunciator is connected with control system, can send the signal to control system, the annunciator can detect whether have the steel pipe on the chain drive mechanism to signal transmission that will detect and obtain gives control system, control system control motor's corotation or reversal.
Adopt the device of this embodiment, the automation of dragging of steel pipe or shaped steel goes on, need not hoist and mount or artifical transport, has avoided the potential safety hazard, has improved work efficiency, very big reduction workman's intensity of labour.
Example 2:
the embodiment discloses a working method of a reciprocating steel pipe or section steel dragging device in embodiment 1: as shown in fig. 4, the control system controls the motor to rotate forward, the pipe clamping plate moves under the driving of the chain transmission mechanism and the bracket, the pipe clamping plate and the bracket clamp the steel pipe 18 or the section steel together to drive the steel pipe or the section steel to advance until the pipe clamping plate pushes the steel pipe or the section steel to the tail end position of the chain transmission mechanism, and at the moment, the annunciator at the tail end position of the chain transmission can detect the signal of the steel pipe.
As shown in FIG. 5, when the annunciator at the tail end of the chain transmission mechanism does not detect the steel pipe or the section steel, it is indicated that the steel pipe or the section steel has entered the next production link, the annunciator at the tail end sends a signal to the control system, and the annunciator at the head end of the chain transmission mechanism receives the signal, the control system controls the motor to rotate in reverse, the bracket moves back to the initial position in reverse direction, during the reverse movement of the bracket, the steel pipe or the section steel exists on the carrier roller, the steel pipe or the section steel drives the pipe clamping plate and the bracket to reduce the angle under the action of the self gravity, and stretches the spring, at this time, the pipe clamping plate and the bracket pass through the lower part of the steel pipe, under the action of the spring, the pipe clamping plate and the bracket are opened again to set the angle, the pipe clamping plate and the bracket can smoothly return to the initial position, after returning to, the safety of workshop production is improved.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a reciprocating type steel pipe or shaped steel drive arrangement, a serial communication port, including transmission device, transmission device and leg joint can drive the motion of support, the rotation of support is connected with the card pipe fitting, and the card pipe fitting can be fixed with steel pipe or shaped steel that the support will wait to transport jointly, the card pipe fitting is connected with the one end of elastic component, and the other end of elastic component is connected with the piece that stops that sets up on the support, stops the setting in card pipe fitting one side for the biggest angle that opens of restriction card pipe fitting and support, elastic component can drive card pipe fitting and support and open and be the settlement angle.
2. The reciprocating steel pipe or section steel dragging device as claimed in claim 1, wherein the transmission mechanism adopts a chain transmission mechanism, the chain transmission mechanism is connected with a power mechanism, the power mechanism can drive the chain transmission mechanism to work, and a transmission chain of the chain transmission mechanism is fixedly connected with the bracket and can drive the bracket to move.
3. The reciprocating steel pipe or section steel dragging device as claimed in claim 2, wherein the chain transmission mechanism adopts a double-row chain transmission mechanism, the transmission chains of the double-row chain transmission mechanism are connected through chain buckles, a fixed block is fixed on the bottom surface of the bracket, and the fixed block extends into a space between two adjacent chain buckles.
4. The reciprocating steel pipe or section steel dragging device as claimed in claim 2, wherein the power mechanism comprises a motor, the output shaft of the motor is connected with a speed reducer, the output shaft of the speed reducer is connected with a chain transmission mechanism, the motor is connected with a control system, and the control system can control the operation of the motor.
5. A reciprocating steel pipe or section steel dragging device as claimed in claim 1, wherein the two ends of the transmission mechanism are provided with annunciators, and the annunciators are connected with a control system and can transmit collected signals to the control system.
6. A reciprocating steel pipe or section steel drawing device as claimed in claim 1, wherein the two sides of the bracket are rotatably connected with positioning wheels, and the positioning wheels are embedded in positioning guide rails arranged at the two sides of the transmission mechanism.
7. The reciprocating steel pipe or section steel dragging device as claimed in claim 1, wherein the two sides of the transmission mechanism are provided with carrier roller frames, the carrier roller frames are rotatably connected with a plurality of carrier rollers, and the carrier rollers are used for supporting the steel pipe or section steel to be transported.
8. A reciprocating steel pipe or section steel drawing device as claimed in claim 1, wherein the pipe clamping member is a pipe clamping plate, and one end of the pipe clamping plate is rotatably connected to the bracket through a steel shaft provided on the bracket.
9. A reciprocating steel pipe or section steel dragging device as claimed in claim 1, wherein said elastic member is a spring, one end of said spring is fixedly connected with the pipe clamping member, the other end is fixedly connected with the blocking member, said blocking member can limit the maximum opening angle of the pipe clamping member and the bracket.
10. A working method of a reciprocating steel pipe or section steel dragging device according to any one of claims 1 to 9, characterized in that under the action of an elastic member, the pipe clamping plate and the support are opened to a set angle, the pipe clamping plate and the support clamp the steel pipe or section steel, the conveying mechanism drives the pipe clamping plate and the support to move forward to drag the steel pipe or section steel to a set position, the conveying mechanism drives the pipe clamping plate and the support to move in reverse, when the steel pipe or section steel passes through the steel pipe or section steel which is not conveyed, the included angle between the pipe clamping plate and the support is reduced under the gravity of the steel pipe or section steel which is not conveyed, the pipe clamping plate and the support can pass under the steel pipe or section steel which is not conveyed, after the pipe clamping plate is separated from the steel pipe or section steel which is not conveyed, the pipe clamping plate is reset under the action of the elastic member to be opened to a set angle with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310552.8A CN111547458B (en) | 2020-04-20 | 2020-04-20 | Reciprocating steel pipe or section steel dragging device and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310552.8A CN111547458B (en) | 2020-04-20 | 2020-04-20 | Reciprocating steel pipe or section steel dragging device and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111547458A true CN111547458A (en) | 2020-08-18 |
| CN111547458B CN111547458B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010310552.8A Active CN111547458B (en) | 2020-04-20 | 2020-04-20 | Reciprocating steel pipe or section steel dragging device and working method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782337A (en) * | 1991-01-15 | 1998-07-21 | Raychem Corporation | Conveyor belt system and heater utilizing said system |
| CN103079975A (en) * | 2010-09-03 | 2013-05-01 | 丰田自动车株式会社 | Conveyor system |
| CN203558450U (en) * | 2013-09-25 | 2014-04-23 | 桐乡市河山工艺玻璃器皿厂 | Bottle body transmission mechanism |
| CN103879727A (en) * | 2014-04-14 | 2014-06-25 | 江苏安盛科技有限公司 | Ontrack green brick vehicle continuous propulsion device |
| CN104444091A (en) * | 2014-11-27 | 2015-03-25 | 常州市兰迪电器有限公司 | Chain transmission conveying device |
| CN204777150U (en) * | 2015-06-06 | 2015-11-18 | 信丰福昌发电子有限公司 | Circuit board production line transfer system |
| CN210312086U (en) * | 2019-05-21 | 2020-04-14 | 湖南宁乡思远实业有限公司 | Cloth conveyer belt convenient to use |
-
2020
- 2020-04-20 CN CN202010310552.8A patent/CN111547458B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5782337A (en) * | 1991-01-15 | 1998-07-21 | Raychem Corporation | Conveyor belt system and heater utilizing said system |
| CN103079975A (en) * | 2010-09-03 | 2013-05-01 | 丰田自动车株式会社 | Conveyor system |
| CN203558450U (en) * | 2013-09-25 | 2014-04-23 | 桐乡市河山工艺玻璃器皿厂 | Bottle body transmission mechanism |
| CN103879727A (en) * | 2014-04-14 | 2014-06-25 | 江苏安盛科技有限公司 | Ontrack green brick vehicle continuous propulsion device |
| CN104444091A (en) * | 2014-11-27 | 2015-03-25 | 常州市兰迪电器有限公司 | Chain transmission conveying device |
| CN204777150U (en) * | 2015-06-06 | 2015-11-18 | 信丰福昌发电子有限公司 | Circuit board production line transfer system |
| CN210312086U (en) * | 2019-05-21 | 2020-04-14 | 湖南宁乡思远实业有限公司 | Cloth conveyer belt convenient to use |
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| CN111547458B (en) | 2022-03-08 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A reciprocating steel pipe or section steel dragging device and its working method Effective date of registration: 20231030 Granted publication date: 20220308 Pledgee: Shandong Jining Yanzhou Rural Commercial Bank Co.,Ltd. Pledgor: Shandong best industrial equipment Co.,Ltd. Registration number: Y2023110000455 |