CN112591328A - Inspection door assembly of circular silo - Google Patents
Inspection door assembly of circular silo Download PDFInfo
- Publication number
- CN112591328A CN112591328A CN202011518142.9A CN202011518142A CN112591328A CN 112591328 A CN112591328 A CN 112591328A CN 202011518142 A CN202011518142 A CN 202011518142A CN 112591328 A CN112591328 A CN 112591328A
- Authority
- CN
- China
- Prior art keywords
- silo
- door
- arc
- hinged
- inspection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 55
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/008—Doors for containers, e.g. ISO-containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/10—Manholes; Inspection openings; Covers therefor
Abstract
An inspection door assembly of a circular silo comprises an arc-shaped door plate, an arc-shaped rotating support used for installing the door plate, an arc-shaped pressure rod used for pressing the door plate on an inspection opening of the silo, and a locking pin used for pressing and locking the pressure rod; the radian of the door plate is consistent with the radian around the silo inspection opening, one end of the rotary support is hinged to the position, located on one side of the silo inspection opening, on the silo, the arc-shaped inner concave surface of the rotary support is correspondingly installed with the arc-shaped outer convex surface of the door plate, the pressure rod and the rotary support are hinged to the position, located on the other side of the silo inspection opening, on the silo in a relative mode, and the locking pin is fixed to the rotary support. Simple operation, time and labor saving, close tightness and difficult deformation.
Description
Technical Field
The invention belongs to the technical field of production of circular silo equipment, and particularly relates to an inspection door assembly of a circular silo.
Background
In the prior art, the inspection door arranged at the inspection opening of the circular silo equipment is usually connected with the silo in a mode that an arc door panel is directly hinged, and the inspection door is locked in a padlock mode after being closed, so that the structure cannot ensure tight closure of the door seam, and the edge part of the door panel is easy to deform and warp.
In addition, because the structural design of the arc-shaped inspection door in the prior art is unreasonable, when the door panel is rotated to be opened, the part of the door panel, which is close to the rotating shaft for connecting with the silo, often collides and extrudes with the outer wall of the silo, so that the opening angle of the door panel is limited, the door panel is damaged, and the tight closing between the door panel and the inspection opening is further influenced.
Moreover, in the inspection door in the prior art, the closing and locking mechanism adopts a hand wheel structure, so that the operation is inconvenient, and time and labor are wasted.
In summary, the inspection door at the inspection opening of the circular silo equipment in the prior art cannot meet the requirements of practical application, and therefore, a new inspection door structure for the circular silo equipment needs to be developed urgently.
Disclosure of Invention
The object of the present invention is to provide an inspection door assembly for a circular silo.
In order to achieve the purpose, the invention adopts the technical scheme that: an inspection door assembly of a circular silo comprises an arc-shaped door plate, an arc-shaped rotating support used for installing the door plate, an arc-shaped pressure rod used for pressing the door plate on an inspection opening of the silo, and a locking pin used for pressing and locking the pressure rod; the arc of the door plate is consistent with the radian around the silo inspection opening, one end of the rotating support is hinged to the silo at the position of one side of the silo inspection opening, the arc inner concave surface of the rotating support is correspondingly installed with the arc outer convex surface of the door plate, the pressure rod and the rotating support are relatively hinged to the silo at the position of the other side of the silo inspection opening, and the locking pin is fixed on the rotating support.
Furthermore, a door wall lug plate is arranged on the outer convex surface of the door plate, the rotating support is hinged with the door plate through the door wall lug plate, a hinge shaft between the rotating support and the door plate and a hinge rotating shaft between the rotating support and the silo are arranged in parallel, and a gap is kept between the inner concave surface of the rotating support and the outer convex surface of the door plate.
Furthermore, the number of the door wall ear plates is two, the rotating support comprises four long arc-shaped steel plates which are arranged in parallel, the inner concave surfaces of the long arc-shaped steel plates are the inner concave surfaces of the rotating support, the four long arc-shaped steel plates are divided into two groups, two long arc-shaped steel plates in each group are hinged through a door plate hinge shaft corresponding to one door wall ear plate, and the door plate hinge shaft is a hinge shaft between the rotating support and the door plate; one end of each group of two long arc-shaped steel plates is hinged with a rotary support hinged lug plate fixed on one side of the silo inspection opening through a rotary support hinged rotating shaft, and the rotary support hinged rotating shaft is a hinged rotating shaft between the rotary support and the silo.
Furthermore, the other ends of the four long arc-shaped steel plates are communicated with the four long arc-shaped steel plates to form a reinforcing rod, and notches for avoiding interference are arranged on the positions, corresponding to the reinforcing rods, of the pressing rods.
Furthermore, the locking pin comprises a fixing piece fixed on the rotating support and a locking pin shaft arranged in the fixing piece, a cavity is arranged in the fixing piece, a through hole penetrating through the cavity is further formed in the fixing piece, the locking pin shaft is arranged in the through hole in a penetrating mode, and a compression spring is sleeved on the part, located in the cavity, of the locking pin shaft; inside the cavity, the one end of fitting pin axle orientation depression bar is fixed with the spring limiting plate, and fitting pin axle will compress tightly the locking on the door plant with the tip of depression bar under compression spring's effect.
Furthermore, an operation pull ring convenient for releasing the pressing and locking is arranged at one end, far away from the pressure rod, of the locking pin shaft.
Furthermore, a safety pin for pressing the pressure rod to prevent the locking pin from losing efficacy and playing a safety role is further arranged at one end of the rotating support, which is close to the hinged position of the pressure rod and the silo.
Further, one end of the safety pin is fixed on the rotating bracket through a chain.
Has the advantages that:
according to the invention, the door plate and the arc-shaped rotating support are hinged only through the door wall lug plate, the rotating support is hinged with the silo, and then the pressing rod is matched with the locking pin to realize the tight closing of the door plate on the inspection opening of the silo, so that the tight closing can be ensured, the operation is convenient, and the door plate cannot be collided and damaged.
A gap is reserved between the rotary support and the door plate, so that the local stress caused to the door plate can be reduced, the position of the door plate can be finely adjusted in the closing process, and the silo inspection opening can be more effectively and tightly closed.
Adopt the fitting pin to compress tightly the depression bar, can realize compressing tightly the door plant to the depression bar through pulling the fitting pin axle, also can realize the locking to the depression bar automatically under compression spring's effect through unclamping the fitting pin, easy operation, labour saving and time saving.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a partial top view taken along line a-a in fig. 1.
Fig. 3 is a schematic structural view of the locking pin.
FIG. 4 is a perspective view of the door panel in a closed state according to the present invention.
FIG. 5 is a perspective view of the door panel in an open state according to the present invention.
The drawing shows that 1, a door panel, 2, a door panel hinged shaft, 3, a door wall lug plate, 4, a pressure rod, 5, a reinforcing rod, 6, a pressure rod hinged lug plate, 7, a pressure rod hinged shaft, 8, a chain, 9, a safety pin, 10, a fixing piece, 10a, a through hole, 11, a locking pin shaft, 11a, an operation pull ring, 12, a rotary support hinged lug plate, 13, a silo, 13a, a silo inspection opening, 14, a rotary support hinged rotating shaft, 15, a long arc-shaped steel plate, 16, a compression spring, 17 and a spring limiting plate.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the invention is not limited thereto.
As shown in the figures, the inspection door assembly of the circular silo comprises an arc-shaped door plate 1, an arc-shaped rotating bracket for mounting the door plate 1, an arc-shaped pressure rod 4 for pressing the door plate 1 at a silo inspection opening 13a, and a locking pin for pressing and locking the pressure rod 4.
The arc shape of the door plate 1 is consistent with the arc shape around the silo inspection opening 13a, one end of the rotary support is hinged to the position of the silo 13 on one side of the silo inspection opening 13a, the inner concave surface of the long strip arc steel plate of the rotary support is correspondingly installed with the arc outer convex surface of the door plate, the pressure lever 4 is opposite to the rotary support and is hinged to the position of the silo 13 on the other side of the silo inspection opening 13a, and the locking pin is fixed on the rotary support. In the present embodiment, the strut 4 is hinged to the silo by means of a strut hinge lug 6 and a strut hinge shaft 7, as shown.
In this embodiment, the outer convex surface of the door panel 1 is provided with a door wall ear plate 3, the rotating support is hinged with the door panel 1 through the door wall ear plate 3, and a hinge shaft between the rotating support and the door panel 1 and a hinge rotating shaft between the rotating support and the silo 13 are arranged in parallel. A gap is kept between the inner concave surface of the rotating bracket and the outer convex surface of the door panel 1.
In this embodiment, the number of the door wall ear plates 3 is two, and the two door wall ear plates 3 are arranged on the door panel in the middle of the arc circumference of the door panel along the same axial direction as the silo 13. The rotating support comprises four long-strip arc-shaped steel plates 15 which are arranged in parallel, and the inner concave surface of each long-strip arc-shaped steel plate 15 is the inner concave surface of the rotating support. The four long arc-shaped plates are divided into two groups, two long arc-shaped steel plates in each group are hinged through a door plate hinge shaft 2 corresponding to a door wall ear plate 3, and the door plate hinge shaft 2 is a hinge shaft between the rotary support and the door plate; one end of each group of two long arc plates is hinged with a rotary bracket hinged ear plate 12 fixed on one side 13a of the silo inspection opening through a rotary bracket hinged rotating shaft 14, and the rotary bracket hinged rotating shaft 14 is a hinged rotating shaft between the rotary bracket and the silo 13.
In the structural design, in the closing process of the inspection door, the door plate 1 can horizontally rotate at a small angle (namely, rotate along the circumferential direction of the silo 13) by taking the central axis of the door plate hinge shaft 2 (taking the attached drawing 2 as the reference and the door plate hinge shaft 2 arranged in the vertical direction) as the central line at the joint of the door wall ear plate of the rotating support, and the relative position of the arc door plate and the arc silo inspection opening 13a is adjusted by micro adjustment, so that the arc door plate 1 and the arc silo inspection opening 13a are tightly attached, and the closing effect is improved. Meanwhile, the structure design can also reduce the local buckling stress in the door panel 1 after the door panel 1 is compressed and locked by the pressure lever 4, so that the door panel 1 is prevented from buckling deformation, and the reliability and the durability of tight fit between the door panel 1 and the silo inspection opening 13a are further ensured.
In order to prevent the deformation of the rotating support and ensure the stability of the rotating support, the other ends of the four long arc steel plates are communicated with the four long arc steel plates, and reinforcing rods 5 which are used for connecting the four long arc steel plates into a whole are arranged at the other ends of the four long arc steel plates. And a notch for avoiding interference is arranged at the position, corresponding to the reinforcing rod 5, of the pressure rod 4.
The locking pin comprises a fixing piece 10 fixed on the rotating bracket and a locking pin shaft 11 arranged in the fixing piece 10. In this embodiment, a cavity is arranged inside the fixing member 10 between the two middle long arc-shaped steel plates of the fixing frame 10, a through hole 10a penetrating through the cavity is arranged on the fixing member 10, the locking pin shaft 11 is arranged in the through hole 10a in a penetrating manner, and a compression spring 16 is sleeved on the part of the locking pin shaft 11 in the cavity; inside the cavity, the one end of fitting pin axle 11 orientation depression bar 4 is fixed with spring limiting plate 17, and fitting pin axle 11 will compress tightly the locking on door plant 1 with the tip of depression bar 4 under compression spring 16's resilience force effect, realizes the locking to depression bar 4 promptly.
In this embodiment, the fixing member 10 is formed by welding steel plates.
An operation pull ring 11a which is convenient for releasing the locking is arranged at one end of the locking pin shaft 11 far away from the pressure rod 4. When the locking is required to be released, the locking pin shaft 11 is pulled by operating the pull ring 11a, the locking pin shaft 11 moves towards the direction away from the pressure rod 4, the compression spring is compressed under the action of the spring limiting plate 17, and the locking pin shaft 11 releases the locking of the pressure rod 4.
And a safety pin 9 for compressing the pressure rod 4 to prevent the locking pin from losing efficacy and playing a safety role is further arranged at one end of the rotating bracket, which is close to the hinged position of the pressure rod 4 and the silo, and one end of the safety pin 9 can be fixed on the rotating bracket through a chain 8.
As another embodiment, the rotating bracket may only include two long arc-shaped steel plates, the two long arc-shaped steel plates are hinged to the door panel through respective door wall ear panels (similar to the hinge connection between the pressing rod and the silo in fig. 5), the two long arc-shaped steel plates may be hinged to the silo through respective rotating bracket hinge rotating shafts, or may share the same rotating bracket hinge rotating shaft to be hinged to the silo; the fixing member 10 is disposed between the two elongated arc-shaped steel plates, and the rest of the structure refers to the embodiment shown in the drawings.
In the invention, the door panel 1 and the silo inspection opening 13a are closed by rotating the rotating bracket around the rotating bracket hinged rotating shaft 14, and the door panel 1 is tightly pressed on the silo inspection opening 13a by the firm locking of the pressure lever 4 and the locking pin; in the process that the door plate 1 is matched with the silo inspection opening 13a, the door plate 1 rotates around the door plate hinge shaft 2 to carry out fine adjustment, and finally the door plate 1 is tightly closed to the silo inspection opening 13 a; the pressing rod 4 transmits pressing force to the reinforcing rod 5 and further transmits the pressing force to the whole rotary support, and the rotary support transmits force to the two door wall ear plates 3 and finally applies force to the arc door plate 1. Then through the locking of fitting pin, be favorable to reducing door wall otic placode department stress concentration, finally guarantee that door plant 1 can not warp.
All plate materials can adopt Q335 steel plates, including the compression bar 4.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and it should be understood by those of ordinary skill in the art that the specific embodiments of the present invention can be modified or substituted with equivalents with reference to the above embodiments, and any modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims to be appended.
Claims (8)
1. An inspection door assembly for a circular silo, comprising: the silo inspection device comprises an arc door panel (1), an arc rotary support for mounting the door panel, an arc compression bar (4) for compressing the door panel (1) at a silo inspection opening (13 a), and a locking pin for compressing and locking the compression bar (4); the arc of the door plate is consistent with the radian around the silo inspection opening, one end of the rotary support is hinged to the position, located on one side of the silo inspection opening (13 a), of the silo, the arc inner concave surface of the rotary support is correspondingly installed with the arc outer convex surface of the door plate, the compression rod (4) and the rotary support are relatively hinged to the position, located on the other side of the silo inspection opening (13 a), of the silo, and the locking pin is fixed on the rotary support.
2. An inspection door assembly for a circular silo as defined in claim 1 wherein: the outer convex surface of the door plate is provided with a door wall lug plate, the rotating support is hinged with the door plate through the door wall lug plate, a hinge shaft between the rotating support and the door plate and a hinge rotating shaft between the rotating support and the silo are arranged in parallel, and a gap is kept between the inner concave surface of the rotating support and the outer convex surface of the door plate (1).
3. An inspection door assembly for a circular silo as defined in claim 2 wherein: the door wall comprises two door wall ear plates (3), the rotating support comprises four long arc-shaped steel plates (15) which are arranged in parallel, the inner concave surfaces of the long arc-shaped steel plates (15) are the inner concave surfaces of the rotating support, the four long arc-shaped steel plates are divided into two groups, two long arc-shaped steel plates in each group are hinged through a door plate hinge shaft (2) corresponding to one door wall ear plate (3), and the door plate hinge shaft (2) is a hinge shaft between the rotating support and the door plate; one end of each group of two long arc-shaped steel plates is hinged with a rotary bracket hinged lug plate (12) fixed on one side of the silo inspection opening through a rotary bracket hinged rotating shaft, and the rotary bracket hinged rotating shaft (14) is a hinged rotating shaft between the rotary bracket and the silo.
4. An inspection door assembly for a circular silo as defined in claim 3 wherein: the other ends of the four long strip arc-shaped steel plates are communicated with the four long strip arc-shaped steel plates and provided with a reinforcing rod (5), and the positions, corresponding to the reinforcing rods (5), on the pressing rod (4) are provided with notches for avoiding interference.
5. An inspection door assembly for a circular silo as defined in claim 1 wherein: the locking pin comprises a fixing piece (10) fixed on the rotating support and a locking pin shaft (11) arranged in the fixing piece (10), a cavity is arranged in the fixing piece (10), a through hole (10 a) penetrating through the cavity is also formed in the fixing piece (10), the locking pin shaft (11) is arranged in the through hole (10 a) in a penetrating mode, and a compression spring (16) is sleeved on the part, located in the cavity, of the locking pin shaft (11); inside the cavity, the one end of fitting pin axle (11) towards depression bar (4) is fixed with spring limiting plate (17), and fitting pin axle (11) will compress tightly the locking on door plant (1) with the tip of depression bar (4) under compression spring's (16) effect.
6. An inspection door assembly for a circular silo as defined in claim 5 wherein: an operation pull ring (11 a) which is convenient for releasing the pressing and locking is arranged at one end of the locking pin shaft (11) far away from the pressure lever (4).
7. An inspection door assembly for a circular silo as defined in claim 1 wherein: and a safety pin (9) for pressing the pressure rod to prevent the locking pin from failing to play a safety role is also arranged at one end of the rotating bracket close to the hinged position of the pressure rod and the silo.
8. An inspection door assembly for a circular silo as defined in any one of claims 1 to 7 wherein: one end of the safety pin (9) is fixed on the rotating bracket through a chain (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011518142.9A CN112591328A (en) | 2020-12-21 | 2020-12-21 | Inspection door assembly of circular silo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011518142.9A CN112591328A (en) | 2020-12-21 | 2020-12-21 | Inspection door assembly of circular silo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112591328A true CN112591328A (en) | 2021-04-02 |
Family
ID=75199697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011518142.9A Pending CN112591328A (en) | 2020-12-21 | 2020-12-21 | Inspection door assembly of circular silo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112591328A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752402A (en) * | 2022-03-16 | 2022-07-15 | 江苏博颂能源科技有限公司 | Opening and closing mechanism for inspection opening of catalytic cracking furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205802086U (en) * | 2016-07-13 | 2016-12-14 | 温州市永盛阀门机械厂 | Reactor and manhole device thereof |
| CN208075574U (en) * | 2018-04-02 | 2018-11-09 | 永康市达摩工贸有限公司 | A kind of combustion gas smelting furnace |
| CN110409992A (en) * | 2019-07-09 | 2019-11-05 | 扬州天地源机电制造有限公司 | A kind of electric extendable door with revolving door |
| CN110552162A (en) * | 2018-06-04 | 2019-12-10 | 青岛海尔洗衣机有限公司 | Locking structure for drum door body of washing machine and washing machine |
| KR20200036822A (en) * | 2020-03-17 | 2020-04-07 | 최영수 | opening and closing device of inspection hole cover for tank lorry |
-
2020
- 2020-12-21 CN CN202011518142.9A patent/CN112591328A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205802086U (en) * | 2016-07-13 | 2016-12-14 | 温州市永盛阀门机械厂 | Reactor and manhole device thereof |
| CN208075574U (en) * | 2018-04-02 | 2018-11-09 | 永康市达摩工贸有限公司 | A kind of combustion gas smelting furnace |
| CN110552162A (en) * | 2018-06-04 | 2019-12-10 | 青岛海尔洗衣机有限公司 | Locking structure for drum door body of washing machine and washing machine |
| CN110409992A (en) * | 2019-07-09 | 2019-11-05 | 扬州天地源机电制造有限公司 | A kind of electric extendable door with revolving door |
| KR20200036822A (en) * | 2020-03-17 | 2020-04-07 | 최영수 | opening and closing device of inspection hole cover for tank lorry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114752402A (en) * | 2022-03-16 | 2022-07-15 | 江苏博颂能源科技有限公司 | Opening and closing mechanism for inspection opening of catalytic cracking furnace |
| CN114752402B (en) * | 2022-03-16 | 2023-09-22 | 江苏博颂能源科技有限公司 | Inspection port opening and closing mechanism for catalytic cracking furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2021079944A5 (en) | ||
| CN112591328A (en) | Inspection door assembly of circular silo | |
| CN107120015A (en) | A kind of aircraft emergency hatch handle mechanism | |
| CN106761123B (en) | A kind of gas spring assembly with auto-lock function | |
| CN201485691U (en) | Side-opened door structure of horizontal type rolling washing machine | |
| WO2018046013A1 (en) | Door hinge assembly and washing machine | |
| CN201165815Y (en) | Automobile door hinge with novel mounting structure | |
| CN207935624U (en) | Pipeline breach obturator | |
| CN101613023B (en) | Top cap locking mechanism available for open top box and open top box with top cap locking mechanism | |
| CN215487695U (en) | Novel energy-saving double-turning-plate air locking valve | |
| CN211059372U (en) | Leakage-proof butterfly valve | |
| CN208323432U (en) | joint structure | |
| CN207090238U (en) | Integrated trash compactor tail gate locking mechanism | |
| CN210175193U (en) | Automatic compressing structure of container gland | |
| CN209699725U (en) | A kind of knock-pin fast assembling disassembling structure of injection molding machine | |
| CN206397337U (en) | A kind of gas spring assembly with auto-lock function | |
| CN207879089U (en) | A kind of latching device, lock body and its application in cooking apparatus | |
| CN217779246U (en) | 180-degree double-shaft hinge mechanism between front piece and small door of liquid transport box | |
| CN205875970U (en) | Locking mechanism suitable for cambered surface hatch door | |
| CN206338422U (en) | A kind of fire resisting damper | |
| CN205940268U (en) | Rain -proof baffle mechanism | |
| CN210714229U (en) | Internal opening type safety door | |
| CN103436432A (en) | Quick-opening manhole | |
| CN207797739U (en) | Tube furnace | |
| CN202326569U (en) | Positioning device with elastic retainer for telescopic rod |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |
|
| RJ01 | Rejection of invention patent application after publication |