CN211251457U - Automatic locking device of door closure of metal baling press - Google Patents
Automatic locking device of door closure of metal baling press Download PDFInfo
- Publication number
- CN211251457U CN211251457U CN201922468594.XU CN201922468594U CN211251457U CN 211251457 U CN211251457 U CN 211251457U CN 201922468594 U CN201922468594 U CN 201922468594U CN 211251457 U CN211251457 U CN 211251457U
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- bolt
- door cover
- door
- locking device
- hydraulic cylinder
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Abstract
The utility model discloses an automatic locking device for a door cover of a metal packer, which comprises a discharge box, a turnover door cover and a telescopic locking component; the two bolt shafts are driven by one hydraulic cylinder to lock and open the door cover, so that the problems of heavy structure, difficult bolt hole centering and weak locking of the door cover self-locking device are solved; the hydraulic cylinder is utilized to drive the two bolt shafts to lock and unlock the door cover, the number of the hydraulic cylinders is reduced, a sliding seat meeting the requirements of rigidity and strength is designed at the position of the supporting lock rod, and a sliding groove is formed in the fixed supporting seat, so that the piston rod pin shaft moves linearly along the sliding groove, and the bolt shafts are driven to be accurately inserted into the jacks; open on fixed bolster has the spout and welded the spacing fixture block of rectangle in slide relevant position, both relative sliding, can prevent to appear under the piston rod effort and the one end perk's that leads to the condition to reduced the locking force, the locking process is easier, has fine practicality.
Description
Technical Field
The utility model relates to a metal waste packing field, concretely relates to automatic locking device of door closure of metal baling press.
Background
The metal packer is large engineering machinery equipment which extrudes leftover materials such as scrap iron, scrap aluminum, wire rods, pipes, plates and the like into a packing block with a specific shape, density and size. The waste material can be extruded and formed only by keeping the door cover in a closed state in the process of extruding the waste metal. The existing automatic locking mechanism for the door cover of the metal packing machine is insufficient in strength, the door is not firm to lock, and the bolt shaft is easy to misplace, so that locking and centering are difficult, the failure rate is high, and the reliability is poor.
The existing metal packer door cover self-locking device mostly adopts double hydraulic cylinders to drive two bolt shafts to lock and open a door, a door cover supporting seat is welded on the upper sides of two side plates of a rack, cylinder ends of the two door cover cylinders are hinged on the door cover supporting seat through hinge shafts, the door cover supporting seat supports the double hydraulic cylinders, so the size is large, a piston rod end is connected with the door cover through the hinge shafts, a left locking rod and a right locking rod are connected with the tail end of a piston rod, and two springs are sleeved on the two locking rods. The two hydraulic cylinders drive the movable sliding seat to move simultaneously, so that the bolt shaft moves forwards to lock or retracts backwards to open the door cover.
Current metal baling press door closure locking mechanism often increases factor of safety through increase pressure and volume for factor of safety sets up unreasonablely: an overlarge safety coefficient is set in an area with a small load, so that material waste is caused, and the cost is increased; but also the structure becomes complicated, which is not favorable for the overall optimization. However, the thickness of the stress concentration places such as the sliding seat is too small, so that the sliding plate is easy to damage; in addition, required pre-compaction pressure is little in the door closure locking process, and a pneumatic cylinder just can satisfy the pressure requirement, and the important thing is that a lot of all do not set up the mechanism that prevents door closure locking mechanism one end perk, makes the bolt axle dislocation easily, or the anti-perk mechanism of design is too complicated, extravagant manpower and materials.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic locking device of door closure of metal baling press to the not enough that exists in the aspect of present metal waste packing locking nature.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an automatic door cover locking device of a metal packer comprises a material placing box, a turnover door cover and a telescopic locking assembly;
the discharging box comprises side plates arranged on two sides and a door pin top plate arranged on the front side, and the door pin top plate is provided with an insertion hole;
the rear end of the turnover door cover is provided with a rotating shaft, and a front plate of the turnover door cover is provided with a bolt through hole;
the telescopic locking assembly comprises a mounting seat, a hydraulic cylinder, a piston rod, a fixed supporting seat, a connecting shaft, a sliding seat and a bolt assembly, the mounting seat is mounted on the side plate, the hydraulic cylinder is rotatably mounted on the mounting seat, the piston rod is connected with the hydraulic cylinder, the connecting shaft is mounted at one end of the piston rod, which is far away from the hydraulic cylinder, the fixed supporting seat is mounted on the door cover, shaft rail grooves are formed in two sides of the fixed supporting seat, the connecting shaft penetrates through the shaft rail grooves and is connected with the sliding seat, the bolt assembly comprises a bolt, a pressure spring and a limiting nut, the bolt is slidably mounted on the sliding seat, and one end of the bolt penetrates through a bolt through hole of the door; the other end of the bolt is provided with the limiting nut, the pressure spring is arranged on the bolt, one end of the pressure spring is abutted to the sliding seat, and the other end of the pressure spring is abutted to the protruding structure of the bolt.
Furthermore, a limit bolt is installed on the door bolt top plate, a limit groove is formed in the bolt, and the limit bolt extends into the limit groove.
Furthermore, the bolt subassembly is provided with two sets, and two bolt subassemblies use the slide to set up as central symmetry.
Furthermore, two limiting nuts are arranged on each plug pin.
Furthermore, a limiting bulge is arranged on the fixed supporting seat.
Furthermore, a limiting pin is arranged on the connecting shaft.
Furthermore, a shaft sleeve is arranged on the jack of the door pin top plate.
The utility model has the advantages that:
1. two bolt shafts are driven by one hydraulic cylinder to lock and open the door cover, and the problems that the door cover self-locking device is heavy in structure, bolt holes are difficult to align and the door cover self-locking device is not firm are solved.
2. A hydraulic cylinder is used to drive two bolt shafts to lock and unlock the door cover.
3. The structure is simplified, the number of hydraulic cylinders is reduced, a sliding seat meeting the requirements of rigidity and strength is designed at the position of the supporting lock rod, and a sliding groove is formed in the fixed supporting seat, so that the piston rod pin shaft can make linear motion along the sliding groove, and the plug pin shaft is driven to be accurately inserted into the jack.
4. Open on fixed bolster has the spout and welded the spacing fixture block of rectangle in slide relevant position, both relative sliding, can prevent to appear under the piston rod effort and the one end perk's that leads to the condition to reduced the locking force, the locking process is easier, has fine practicality.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of the present invention.
Fig. 3 is a schematic structural view of the telescopic locking assembly of the present invention.
Fig. 4 is a schematic structural view of the slide seat of the present invention.
Fig. 5 is a schematic structural view of the fixing support seat of the present invention.
Fig. 6 is a schematic structural view of the plug pin assembly of the present invention.
In the figure: the material discharge box comprises a material discharge box 1, a side plate 11, a door pin top plate 12, a jack 121, a turnover door cover 2, a rotating shaft 21, a bolt through hole 22, a telescopic locking assembly 3, a hydraulic cylinder mounting seat 31, a hydraulic cylinder 32, a piston rod 33, a fixed supporting seat 34, a connecting shaft 35, a sliding seat 36, a bolt assembly 37, a bolt 371, a pressure spring 372, a limiting nut 373, a limiting bolt 4, a limiting groove 5, an anti-blocking inclined plane 6, a limiting tip 8, a shaft sleeve 9, a mounting plate 10, a shaft rail groove 101, a limiting bulge 102, a bottom plate 11, a sliding groove 111, a sliding plate 12 and a pin mounting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention will be further described in detail with reference to the following embodiments thereof; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.
The first embodiment.
As shown in fig. 1 to 6, an automatic door cover locking device of a metal packer comprises a material placing box, a turnover door cover and a telescopic locking assembly; the discharging box comprises side plates arranged on two sides and a door pin top plate arranged on the front side, and the door pin top plate is provided with an insertion hole; the rear end of the turnover door cover is provided with a rotating shaft, and a front plate of the turnover door cover is provided with a bolt through hole; the telescopic locking assembly comprises a mounting seat, a hydraulic cylinder, a piston rod, a fixed supporting seat, a connecting shaft, a sliding seat and a bolt assembly, the mounting seat is mounted on the side plate, the hydraulic cylinder is rotatably mounted on the mounting seat, the piston rod is connected with the hydraulic cylinder, the connecting shaft is mounted at one end of the piston rod, which is far away from the hydraulic cylinder, the fixed supporting seat is mounted on the door cover, shaft rail grooves are formed in two sides of the fixed supporting seat, the connecting shaft penetrates through the shaft rail grooves and is connected with the sliding seat, the bolt assembly comprises a bolt, a pressure spring and a limiting nut, the bolt is slidably mounted on the sliding seat, and one end of the bolt penetrates through a bolt through hole of the door; the other end of the bolt is provided with the limiting nut, the pressure spring is arranged on the bolt, one end of the pressure spring is abutted to the sliding seat, and the other end of the pressure spring is abutted to the protruding structure of the bolt.
The door bolt is characterized in that a limiting bolt is installed on the door bolt top plate, a limiting groove is formed in the bolt, and the limiting bolt extends into the limiting groove. The two groups of the bolt assemblies are arranged, and the two groups of the bolt assemblies are symmetrically arranged by taking the sliding seat as a center. And two limiting nuts are arranged on each plug pin. And the fixed supporting seat is provided with a limiting bulge. And a limiting pin is arranged on the connecting shaft. And a shaft sleeve is arranged on the jack of the door pin top plate.
Example two.
The embodiment is another description form of the above embodiment, and specifically includes:
an automatic door cover locking device of a metal packer comprises a material placing box 1, a turnover door cover 2 and a telescopic locking component 3;
the discharging box 1 comprises side plates 11 arranged on two sides and a door pin top plate 12 arranged on the front side, and the door pin top plate 12 is provided with an insertion hole 121;
a rotating shaft 21 is installed at the rear end of the turnover door cover 2, and a bolt through hole 22 is formed in the front plate of the turnover door cover 2;
the telescopic locking assembly 3 comprises a mounting seat, a hydraulic cylinder 32, a piston rod 33, a fixed support seat 34, a connecting shaft 35, a sliding seat 36 and a bolt assembly 37, wherein the mounting seat is mounted on the side plate 11, the hydraulic cylinder 32 is rotatably mounted on the mounting seat, the piston rod 33 is connected with the hydraulic cylinder 32, the connecting shaft 35 is mounted at the front end of the piston rod 33, the fixed support seat 34 is mounted on the door cover, shaft rail grooves 101 are formed in two sides of the fixed support seat 34, the connecting shaft 35 penetrates through the shaft rail grooves 101 to be connected with the sliding seat 36, the bolt assembly 37 comprises a bolt 371, a pressure spring 372 and a limit nut 373, the bolt is slidably mounted on the sliding seat 36, and one end of the bolt 371 penetrates through a bolt through hole 22 of the door cover; the limit nut 373 is installed at the rear end of the bolt 371, the pressure spring 372 is installed on the bolt 371, and the rear end of the pressure spring 372 is abutted to the sliding seat 36.
Install limit bolt 4 on door pin roof 12, be provided with spacing groove 5 on the bolt 371, limit bolt 4 extends to in the spacing groove 5. The two limit nuts 373 are provided on each of the pins 371. The tail end of the connecting shaft 35 is provided with a limiting pin 8. The insertion hole 121 of the door pin top plate 12 is provided with a shaft sleeve 9.
In the specific implementation: after the discharge box 1 is filled with the waste materials, the piston rod 33 extends out, when the positive and negative door cover rotates downwards to a horizontal position, the fixed cover plate supports a front end locking plate of the door cover, the piston rod 33 continues to extend forwards a little, the pressure spring 372 is compressed, and the bolt 371 is driven to move forwards until the bolt is inserted into the bolt through hole 22 of the door pin top plate 12, and at the moment, the turnover door cover is locked; after the waste material is compressed and formed, the piston rod 33 retracts, the pressure spring 372 is released, the bolt 371 is driven to withdraw from the bolt through hole 22, and the piston rod 33 continues to retract until the turnover door cover 2 is completely opened.
Example two.
An automatic door cover locking device of a metal packer comprises a material placing box 1, a turnover door cover 2 and a telescopic locking component 3;
the discharging box 1 comprises side plates 11 arranged on two sides and a door pin top plate 12 arranged on the front side, and the door pin top plate 12 is provided with an insertion hole 121;
a rotating shaft 21 is installed at the rear end of the turnover door cover 2, and a bolt through hole 22 is formed in the front plate of the turnover door cover 2;
the telescopic locking assembly 3 comprises a mounting seat, a hydraulic cylinder 32, a piston rod 33, a fixed support seat 34, a connecting shaft 35, a sliding seat 36 and a bolt assembly 37, wherein the mounting seat is mounted on the side plate 11, the hydraulic cylinder 32 is rotatably mounted on the mounting seat, the piston rod 33 is connected with the hydraulic cylinder 32, the connecting shaft 35 is mounted at the front end of the piston rod 33, the fixed support seat 34 is mounted on the door cover, shaft rail grooves 101 are formed in two sides of the fixed support seat 34, the connecting shaft 35 penetrates through the shaft rail grooves 101 to be connected with the sliding seat 36, the bolt assembly 37 comprises a bolt 371, a pressure spring 372 and a limit nut 373, the bolt is slidably mounted on the sliding seat 36, and one end of the bolt 371 penetrates through a bolt through hole 22 of the door cover; the limit nut 373 is installed at the rear end of the bolt 371, the pressure spring 372 is installed on the bolt 371, and the rear end of the pressure spring 372 is abutted to the sliding seat 36.
Install limit bolt 4 on door pin roof 12, be provided with spacing groove 5 on the bolt 371, limit bolt 4 extends to in the spacing groove 5. In this embodiment, two sets of the pin assemblies 37 are provided, and the two pin assemblies 37 are symmetrically arranged around the sliding base 36.
In this embodiment, the front end of the latch 371 is provided with an anti-jamming bevel 6.
The two limit nuts 373 are provided on each of the pins 371. The tail end of the connecting shaft 35 is provided with a limiting pin 8.
In the specific implementation:
Example three.
An automatic door cover locking device of a metal packer comprises a material placing box 1, a turnover door cover 2 and a telescopic locking component 3;
the discharging box 1 comprises side plates 11 arranged on two sides and a door pin top plate 12 arranged on the front side, and the door pin top plate 12 is provided with an insertion hole 121;
a rotating shaft 21 is installed at the rear end of the turnover door cover 2, two ends of the rotating shaft 21 are installed on the side plate 11 of the material placing box 1, and a bolt through hole 22 is formed in the front plate of the turnover door cover 2;
the telescopic locking assembly 3 comprises a mounting seat, a hydraulic cylinder 32, a piston rod 33, a fixed support seat 34, a connecting shaft 35, a sliding seat 36 and a bolt assembly 37, wherein the mounting seat is mounted on the side plate 11, the hydraulic cylinder 32 is rotatably mounted on the mounting seat, the piston rod 33 is connected with the hydraulic cylinder 32, and the connecting shaft 35 is mounted at the front end of the piston rod 33;
in this embodiment, the fixed support seat 34 includes a mounting plate 10 and a bottom plate 11, the bottom plate 11 is fixedly mounted on the door cover, the mounting plate 10 is provided with two, the two mounting plates 10 are mounted on the bottom plate 11, the mounting plate 10 is provided with a shaft rail groove 101 and a limiting protrusion 102, the bottom plate 11 is provided with a sliding groove 111, the slider 36 includes two sliding plates 12 and a pin mounting rod 13, the two sliding plates 12 are connected to the pin mounting plate 10, the pin mounting plate 10 is provided with a mounting hole, the two sliding plates 12 are disposed on the sliding groove 111 of the bottom plate 11, the connecting shaft 35 penetrates through the shaft rail groove 101 and is connected to the sliding plate 12, the pin assembly 37 includes a pin 371, a pressure spring 372 and a limiting nut 373, the rear end of the pin penetrates through the mounting hole and is connected to the limiting nut 373, the front end of the pin 371 penetrates through the pin through hole 22 of the door cover, the pressure spring 372 is installed on a bolt 371, and the rear end of the pressure spring 372 is abutted to the sliding seat 36.
The bottom of the sliding plate 12 is further provided with a limiting fixture block, and the side edge of the sliding groove 111 is further provided with a clamping groove matched with the limiting fixture block.
Install limit bolt 4 on door pin roof 12, be provided with spacing groove 5 on the bolt 371, limit bolt 4 extends to in the spacing groove 5.
The front end of the bolt 371 is provided with an anti-jamming bevel 6. Two sets of the pin assemblies 37 are provided, and the two pin assemblies 37 are symmetrically arranged with the slide carriage 36 as a center. The two limit nuts 373 are provided on each of the pins 371.
The tail end of the connecting shaft 35 is provided with a limiting pin 8. The insertion hole 121 of the door pin top plate 12 is provided with a shaft sleeve 9.
The utility model uses a hydraulic device to drive two bolts 371, which reduces the number of hydraulic components, reduces the size and weight of the mounting seat and saves the cost; and the thickness and the height of the sliding seat 36 are reasonably set, the strength and the rigidity of the telescopic locking component 3 are increased, the service life of the telescopic locking component 3 is prolonged, the design of the sliding groove 111 can ensure that the bolt 371 shaft is accurately inserted into the bolt 371 hole, and a simple, convenient and practical anti-tilting mechanism is designed at the corresponding position of the sliding seat 36 and the fixed support seat 34, so that the opening and closing process of the turnover door cover 2 is more reliable.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems, and devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various components may be added, omitted, and/or combined. Moreover, features described with respect to certain configurations may be combined in various other configurations, as different aspects and elements of the configurations may be combined in a similar manner. Further, elements therein may be updated as technology evolves, i.e., many elements are examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be understood as merely illustrative of the present invention and not as limiting the scope of the invention. After reading the description of the present invention, the skilled person can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope of the present invention defined by the claims.
Claims (7)
1. The utility model provides an automatic locking device of door closure of metal baling press which characterized in that includes: the device comprises a material placing box, a turnover door cover and a telescopic locking assembly;
the discharging box comprises side plates arranged on two sides and a door pin top plate arranged on the front side, and the door pin top plate is provided with an insertion hole;
the rear end of the turnover door cover is provided with a rotating shaft, and a front plate of the turnover door cover is provided with a bolt through hole;
the telescopic locking assembly comprises a mounting seat, a hydraulic cylinder, a piston rod, a fixed supporting seat, a connecting shaft, a sliding seat and a bolt assembly, the mounting seat is mounted on the side plate, the hydraulic cylinder is rotatably mounted on the mounting seat, the piston rod is connected with the hydraulic cylinder, the connecting shaft is mounted at one end of the piston rod, which is far away from the hydraulic cylinder, the fixed supporting seat is mounted on the door cover, shaft rail grooves are formed in two sides of the fixed supporting seat, the connecting shaft penetrates through the shaft rail grooves and is connected with the sliding seat, the bolt assembly comprises a bolt, a pressure spring and a limiting nut, the bolt is slidably mounted on the sliding seat, and one end of the bolt penetrates through a bolt through hole of the door; the other end of the bolt is provided with the limiting nut, the pressure spring is arranged on the bolt, one end of the pressure spring is abutted to the sliding seat, and the other end of the pressure spring is abutted to the protruding structure of the bolt.
2. The automatic locking device for the door cover of the metal packing machine as claimed in claim 1, wherein a limiting bolt is mounted on the top plate of the door bolt, a limiting groove is formed on the bolt, and the limiting bolt extends into the limiting groove.
3. The automatic door locking device for a metal wrapping machine according to claim 1, wherein said latch members are provided in two sets, and the two sets of latch members are symmetrically disposed with respect to the slider.
4. The automatic door cover locking device for a metal baler of claim 1, wherein two of the limit nuts are provided on each of the pins.
5. The automatic door cover locking device for a metal baler of claim 1, wherein the fixed support is provided with a limiting projection.
6. The automatic locking device for the door cover of the metal baler according to claim 1, wherein the connecting shaft is provided with a limit pin.
7. The automatic door cover locking device for the metal baler of claim 1, wherein the insertion hole of the top plate of the door pin is provided with a shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468594.XU CN211251457U (en) | 2019-12-31 | 2019-12-31 | Automatic locking device of door closure of metal baling press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468594.XU CN211251457U (en) | 2019-12-31 | 2019-12-31 | Automatic locking device of door closure of metal baling press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211251457U true CN211251457U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468594.XU Expired - Fee Related CN211251457U (en) | 2019-12-31 | 2019-12-31 | Automatic locking device of door closure of metal baling press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211251457U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320996A (en) * | 2021-05-21 | 2021-08-31 | 杭州电子科技大学 | Intelligent material device based on AGV dolly |
| CN113353480A (en) * | 2021-05-21 | 2021-09-07 | 杭州电子科技大学 | Opening-closing and locking integrated manhole cover |
| CN114834708A (en) * | 2022-04-13 | 2022-08-02 | 太原重工股份有限公司 | Limiting device of automatic flip bolt |
| CN115972657A (en) * | 2022-11-25 | 2023-04-18 | 长沙中金智能装备有限公司 | Metal packing machine and metal packing method |
-
2019
- 2019-12-31 CN CN201922468594.XU patent/CN211251457U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320996A (en) * | 2021-05-21 | 2021-08-31 | 杭州电子科技大学 | Intelligent material device based on AGV dolly |
| CN113353480A (en) * | 2021-05-21 | 2021-09-07 | 杭州电子科技大学 | Opening-closing and locking integrated manhole cover |
| CN114834708A (en) * | 2022-04-13 | 2022-08-02 | 太原重工股份有限公司 | Limiting device of automatic flip bolt |
| CN114834708B (en) * | 2022-04-13 | 2024-03-22 | 太原重工股份有限公司 | Automatic stop device of flip bolt |
| CN115972657A (en) * | 2022-11-25 | 2023-04-18 | 长沙中金智能装备有限公司 | Metal packing machine and metal packing method |
| CN115972657B (en) * | 2022-11-25 | 2024-01-09 | 长沙中金智能装备有限公司 | Metal baling press and metal baling method |
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| GR01 | Patent grant | ||
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Granted publication date: 20200814 Termination date: 20211231 |