CN216843781U - LED display screen connecting device - Google Patents
LED display screen connecting device Download PDFInfo
- Publication number
- CN216843781U CN216843781U CN202123063501.9U CN202123063501U CN216843781U CN 216843781 U CN216843781 U CN 216843781U CN 202123063501 U CN202123063501 U CN 202123063501U CN 216843781 U CN216843781 U CN 216843781U
- Authority
- CN
- China
- Prior art keywords
- display screen
- sleeve
- led display
- clamping jaw
- connecting device
- 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.)
- Active
Links
Images
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model discloses a LED display screen connecting device, which is used for connecting an LED display screen, wherein the LED display screen comprises a display screen shell with a connecting hole; the LED display screen connecting device comprises an installation rod, a sleeve structure and a clamping jaw structure, wherein the clamping jaw structure is arranged at one end part of the installation rod; the sleeve structure is sleeved on the mounting rod in a sliding manner; the claw structure comprises a connecting piece and at least two claws, and one end of each claw is hinged with the mounting rod; one end of the connecting piece is hinged with the middle part of the clamping jaw, and the other end of the connecting piece is hinged with the sleeve structure; when the LED display screen is connected, the clamping jaw structure penetrates through the connecting hole, the other end of the clamping jaw abuts against the inner wall surface of the display screen shell, and the sleeve structure abuts against the outer wall surface of the display screen shell. This LED display screen connecting device simple structure, the simple operation hangs the effect stably, and the display screen is installed above being difficult for droing.
Description
Technical Field
The utility model relates to a display screen technical field especially relates to a LED display screen connecting device.
Background
With the wide application of LED display screens in many fields, the application of LED display screens is becoming more and more extensive, and in public areas such as shopping malls and squares, the LED display screens are often made into large screens to play advertisement contents, and most of these display screens are in a suspended structure. In the prior art, the housing of the display screen is usually screwed and fixedly connected with a hanging rack fixedly installed on the wall surface or the ceiling of a building to hang the display screen. This way installation degree of difficulty is big, and is inconvenient to lift the display screen off in order to overhaul.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the LED display screen connecting device is convenient to disassemble and assemble.
In order to solve the technical problem, the utility model discloses a technical scheme be: an LED display screen connecting device is used for connecting an LED display screen, and the LED display screen comprises a display screen shell with a connecting hole; the LED display screen connecting device comprises an installation rod, a sleeve structure and a clamping jaw structure, wherein the clamping jaw structure is arranged at one end part of the installation rod; the sleeve structure is sleeved on the mounting rod in a sliding manner; the claw structure comprises a connecting piece and at least two claws, and one end of each claw is hinged with the mounting rod; one end of the connecting piece is hinged with the middle part of the clamping jaw, and the other end of the connecting piece is hinged with the sleeve structure; when the LED display screen is connected, the clamping jaw structure penetrates through the connecting hole, the other end of the clamping jaw abuts against the inner wall surface of the display screen shell, and the sleeve structure abuts against the outer wall surface of the display screen shell.
Further, the tip of installation pole is equipped with the support, a tip of jack catch with the support is articulated, be equipped with on the support and be used for conflicting sleeve pipe structure's conflict portion.
Furthermore, the bracket further comprises a first fastener, and the bracket is fixed on the mounting rod through the first fastener.
Furthermore, the sleeve structure comprises a rotary sleeve and a sleeve connecting piece, the side wall of the sleeve connecting piece is hinged with the connecting piece, and the outer side wall of one end, far away from the clamping jaw, of the sleeve connecting piece is in threaded connection with the inner side wall of the rotary sleeve; the rotary sleeve is provided with a baffle at one end close to the clamping jaw, and the baffle abuts against the outer wall surface of the display screen shell at the connecting hole.
Further, the installation pole is including continuous big footpath section and path section, the jack catch structure is located the path section is kept away from the tip of big footpath section, bushing structure cover is located on the path section, just rotatory sheathed tube internal diameter is less than the external diameter of big footpath section.
Further, the length of the small diameter section is less than the sum of the lengths of the rotary sleeve and the sleeve connector.
Furthermore, an anti-skid structure is arranged on the outer peripheral surface of the rotary sleeve.
Further, the baffle plate fixing device further comprises a second fastening piece, and the baffle plate is fixed on the rotating sleeve through the second fastening piece.
Furthermore, one end, far away from the mounting rod, of the clamping jaw is bent towards the direction close to the sleeve structure.
Furthermore, the installation rod further comprises a grapple which is arranged at the other end of the installation rod.
The beneficial effects of the utility model reside in that: this LED display screen connecting device simple structure, the simple operation is favorable to the staff installation or lift the display screen off, hangs the effect stable, and the display screen is difficult for droing above installing, need hang the occasion of use with the LED display screen in public areas such as market, square.
Drawings
Fig. 1 is an exploded view of a LED display screen connection device according to a first embodiment of the present invention;
fig. 2 is a first cross-sectional view of a first LED display screen connection device (when connecting an LED display screen) according to a first embodiment of the present invention;
fig. 3 is a second cross-sectional view (when the claws are contracted) of the LED display screen connection device according to the first embodiment of the present invention;
fig. 4 is a third cross-sectional view (when the claws are opened) of the LED display screen connecting device according to the first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a claw structure and a sleeve connector in an LED display screen connection device according to a first embodiment of the present invention.
Description of reference numerals:
1. a display screen housing; 11. connecting holes;
2. mounting a rod; 21. a support; 211. a collision part; 212. a first fastener;
3. a sleeve structure; 31. rotating the sleeve; 311. a baffle plate; 312. an anti-slip structure; 313. a second fastener; 32. a casing connector;
4. a jaw structure; 41. a connecting member; 42. a claw;
5. and (4) grabbing hooks.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 5, an LED display screen connecting device is used for connecting an LED display screen, where the LED display screen includes a display screen housing 1 having a connecting hole 11; the LED display screen connecting device comprises an installation rod 2, a sleeve structure 3 and a clamping jaw structure 4, wherein the clamping jaw structure 4 is arranged at one end part of the installation rod 2; the sleeve structure 3 is sleeved on the mounting rod 2 in a sliding manner; the jaw structure 4 comprises a connecting piece 41 and at least two jaws 42, and one end of each jaw 42 is hinged with the mounting rod 2; one end of the connecting piece 41 is hinged with the middle part of the clamping jaw 42, and the other end of the connecting piece is hinged with the sleeve structure 3; when the LED display screen is connected, the clamping jaw structure 4 penetrates through the connecting hole 11, the other end of the clamping jaw 42 abuts against the inner wall surface of the display screen shell 1, and the sleeve structure 3 abuts against the outer wall surface of the display screen shell 1.
The working principle of the utility model is as follows: when in use, one end of the mounting rod 2 far away from the clamping jaw 42 is fixed at a proper position. Then, the sleeve structure 3 is slid towards the direction far away from the claws 42, so that the claws 42 can rotate around the hinged end and contract and approach towards the mounting rod 2, and the claw structures 4 can extend into the connecting holes 11; sliding the sleeve structure 3 towards the direction close to the claws 42, so that the claws 42 can rotate and open towards the direction far away from the mounting rod 2; at this moment, the other end of the claw 42 can abut against the inner wall surface of the display screen shell 1, so that the display screen shell 1 is prevented from being separated from the mounting rod 2, and the display screen is mounted. When the display screen needs to be detached, the clamping jaw structure 4 can be taken out from the connecting hole 11 only by sliding the sleeve structure 3 and controlling the clamping jaw 42 to contract and draw close to the mounting rod 2, and then the display screen is separated from the mounting rod 2.
From the above description, the beneficial effects of the present invention are: the LED display screen connecting device is simple in structure, convenient and fast to operate and beneficial to workers to install or dismount the display screen; the suspension effect is stable, and the display screen is not easy to fall off when being installed on the suspension structure; the LED display screen is suitable for occasions needing to be hung for use in public areas such as markets, squares and the like.
Further, the end of the mounting rod 2 is provided with a support 21, one end of the claw 42 is hinged to the support 21, and the support 21 is provided with a collision part 211 for colliding with the sleeve structure 3.
As can be seen from the above description, the interference part 211 on the bracket 21 can limit the position of the sleeve structure 3 to prevent the sleeve structure 3 from being separated from the mounting rod 2, and meanwhile, the interference part 211 can prevent the sleeve structure 3 from impacting the claw 42 to damage the claw 42.
Further, a first fastener 212 is included, and the bracket 21 is fixed on the mounting rod 2 through the first fastener 212.
As will be appreciated from the above description, the bracket 21 is removable from the mounting bar 2 to facilitate replacement of a damaged bracket 21 or sleeve structure 3.
Further, the sleeve structure 3 comprises a rotating sleeve 31 and a sleeve connecting piece 32, the side wall of the sleeve connecting piece 32 is hinged with the connecting piece 41, and the outer side wall of one end of the sleeve connecting piece 32, which is far away from the clamping jaw 42, is in threaded connection with the inner side wall of the rotating sleeve 31; one end of the rotating sleeve 31 close to the claw 42 is provided with a baffle 311, and the baffle 311 abuts against the outer wall surface of the display screen shell 1 at the connecting hole 11.
As can be seen from the above description, the claw structure 4 extends into the connecting hole 11 and abuts against the inner wall surface of the display screen housing 1, and then the rotating sleeve 31 can approach the sleeve connector 32 through the screw thread, so that the baffle 311 abuts against the outer wall surface of the display screen housing 1 and clamps the display screen housing 1 together with the claw 42, thereby preventing the display screen housing 1 from shaking under the action of external force.
Further, the installation rod 2 comprises a large-diameter section and a small-diameter section which are connected, the claw structures 4 are arranged on the small-diameter section, the small-diameter section is far away from the end part of the large-diameter section, the sleeve structure 3 is sleeved on the small-diameter section, and the inner diameter of the rotary sleeve 31 is smaller than the outer diameter of the large-diameter section.
It can be known from the above description that the setting minor diameter section can limit the stroke of the sleeve structure 3, and prevent that the sleeve structure 3 from sliding too much after being acted on by external force, and then make the connecting piece 41 receive great pulling force and be impaired, or make the jack catch 42 rotate too much, the jack catch 42 side collides with the installation rod 2 or the connecting piece 41 and causes the damage.
Further, the length of the small diameter section is smaller than the sum of the lengths of the rotary sleeve 31 and the sleeve connector 32.
As can be seen from the above description, the rotary sleeve 31 and the sleeve connector 32 are always in threaded connection to prevent the rotary sleeve 31 and the sleeve connector 32 from being separated from each other, so that inconvenience is caused to the installation of the display screen by the worker, and the installation efficiency is reduced.
Further, an anti-slip structure 312 is disposed on the outer peripheral surface of the rotating sleeve 31.
As can be seen from the above description, the anti-slip structure 312 can increase the friction between the rotary sleeve 31 and the hand of the worker, thereby facilitating the worker to rotate the rotary sleeve 31 and further improving the efficiency of assembling and disassembling the display screen.
Further, a second fastening member 313 is included, and the baffle 311 is fixed on the rotating sleeve 31 by the second fastening member 313.
From the above description, the design of separating the baffle 311 from the rotating sleeve 31 is beneficial to the processing and forming, and meanwhile, the production materials are reduced, so that the production cost of the LED display screen connecting device is reduced.
Further, the end of the claw 42 remote from the mounting rod 2 is bent towards the sleeve structure 3.
As can be seen from the above description, the bent claws 42 can better resist the force from the inner wall surface of the display screen housing 1; meanwhile, when the latch 42 extends into the connection hole 11 and abuts against the inner wall surface of the display screen housing 1, the latch structure 4 can be completely accommodated in the display screen housing 1, so that the baffle 311 on the rotary sleeve 31 can approach and abut against the outer wall surface of the display screen housing 1.
Furthermore, the mounting rod further comprises a grab hook 5, and the grab hook 5 is arranged at the other end of the mounting rod 2.
As will be understood from the above description, the mounting bar 2 can be detachably mounted at a suitable position by the grapple 5.
Example one
Referring to fig. 1 to 5, a first embodiment of the present invention is: a LED display screen connecting device is used for connecting an LED display screen, and the LED display screen comprises a display screen shell 1 with a connecting hole 11; the LED display screen connecting device comprises an installation rod 2, a sleeve structure 3 and a clamping jaw structure 4, wherein the clamping jaw structure 4 is arranged at one end part of the installation rod 2; the sleeve structure 3 is sleeved on the mounting rod 2 in a sliding manner; the jaw structure 4 comprises a connecting piece 41 and at least two jaws 42, and one end of each jaw 42 is hinged with the mounting rod 2; one end of the connecting piece 41 is hinged with the middle part of the clamping jaw 42, and the other end of the connecting piece is hinged with the sleeve structure 3; when the LED display screen connecting device is connected with the LED display screen, the clamping jaw structure 4 penetrates through the connecting hole 11, the other end of the clamping jaw 42 is abutted against the inner wall surface of the display screen shell 1, and the sleeve structure 3 is abutted against the outer wall surface of the display screen shell 1.
Specifically, the mounting rod 2 is a cylindrical rod, and two connecting pieces 41 are correspondingly arranged on two sides of each clamping jaw 42. The clamping jaws 42 are hinged with the mounting rod 2, the connecting piece 41 is hinged with the clamping jaws 42, and the connecting piece 41 is hinged with the sleeve structure 3 through pins, so that the mounting and dismounting are facilitated to replace damaged parts. In the embodiment, four claws 42 are uniformly arranged around the axial direction of the mounting rod 2; in other embodiments, two, three, or more jaws 42 may be provided.
In order to prevent the sleeve structure 3 from colliding with the jaw 42, the end of the mounting rod 2 is provided with a bracket 21, one end of the jaw 42 is hinged to the bracket 21, and the bracket 21 is provided with a collision portion 211 for colliding with the sleeve structure 3. Specifically, correspond every jack catch 42 on the support 21 and be equipped with two conflict portions 211, conflict portion 211 salient installation pole 2 is global to be set up, and then when sleeve pipe structure 3 slides to the direction that is close to jack catch 42, sleeve pipe structure 3's terminal surface will with conflict portion 211 butt, prevent that sleeve pipe structure 3 from breaking away from installation pole 2 or striking jack catch 42.
In order to facilitate the assembly and disassembly of the bracket 21 and the sleeve structure 3, the LED display screen connecting device further comprises a first fastener 212, and the bracket 21 is fixed on the mounting rod 2 through the first fastener 212. Specifically, in the present embodiment, the first fastening member 212 is a screw. A first through hole is formed in the middle of the support 21, a first threaded hole is formed in the end of the mounting rod 2, and a first fastener 212 can pass through the first through hole and be connected with the first threaded hole, so that the support 21 is connected to the mounting rod 2; when a damaged bracket 21 or sleeve structure 3 needs to be replaced, the bracket 21 can be detached from the mounting rod 2 and the sleeve structure 3 can be taken out by rotating the first fastening member 212 to take it off.
Referring to fig. 2 to 4, in order to prevent the display screen from shaking due to an external force, the sleeve structure 3 includes a rotary sleeve 31 and a sleeve connector 32, a side wall of the sleeve connector 32 is hinged to the connector 41, and an outer side wall of one end of the sleeve connector 32, which is far away from the claw 42, is in threaded connection with an inner side wall of the rotary sleeve 31; one end of the rotating sleeve 31 close to the claw 42 is provided with a baffle 311, and the baffle 311 abuts against the outer wall surface of the display screen shell 1 at the connecting hole 11.
When the claws 42 extend into the connecting holes 11 and are opened and abut against the inner wall surface of the display screen shell 1, the positions of the sleeve connecting pieces 32 are close to the connecting holes 11; at this moment, the rotating sleeve 31 is rotated, and the distance between the rotating sleeve 31 and the sleeve connecting piece 32 is shortened through threads, so that the baffle 311 can move towards the direction close to the display screen shell 1 until the baffle 311 collides with the outer wall surface of the display screen shell 1, and then the baffle 311 and the clamping jaws 42 clamp the column display screen shell 1 together, so that the display screen shell 1 is prevented from shaking forwards and backwards relative to the end surface of the baffle 311 under the action of external force.
In order to facilitate the limitation of the stroke of the sleeve structure 3, the mounting rod 2 comprises a large-diameter section and a small-diameter section which are connected, the jaw structure 4 is arranged at the end part of the large-diameter section far away from the small-diameter section, the sleeve structure 3 is sleeved on the small-diameter section, and the inner diameter of the rotary sleeve 31 is smaller than the outer diameter of the large-diameter section.
In order to prevent the sleeve connection member 32 from being detached from the rotary sleeve 31, the length of the small diameter section is smaller than the sum of the lengths of the rotary sleeve 31 and the sleeve connection member 32.
In order to facilitate the rotation of the rotary sleeve 31, an anti-slip structure 312 is disposed on the outer circumferential surface of the rotary sleeve 31.
Referring to fig. 1, in order to reduce the production cost, the LED display screen connecting device further includes a second fastening member 313, and the baffle 311 is fixed on the rotating sleeve 31 by the second fastening member 313. Specifically, the baffle 311 is annular, and because the difference between the outer diameters of the baffle 311 and the rotating sleeve 31 is large, if the baffle 311 and the rotating sleeve 31 are integrally designed, a large amount of raw materials need to be cut off, so that the production cost is high; the outer peripheral surface of the rotating sleeve 31 is provided with the anti-skid structure 312, and the integrated design is not beneficial to the processing of the anti-skid structure 312; therefore, the baffle 311 and the rotary sleeve 31 are provided as separate components and then fixedly coupled by the second fastening member 313 to facilitate the preliminary manufacturing process. In this embodiment, the second fastening member 313 is preferably a screw, the baffle 311 is provided with a second through hole, and the end surface of the rotating sleeve 31 is provided with a second threaded hole matched with the second fastening member 313; the second fastening member 313 may be coupled to the second screw hole through the second through hole to fixedly couple the blocking plate 311 to the rotary sleeve 31.
In order to allow the baffle 311 to approach and finally abut against the outer wall surface of the display housing 1, the end of the latch 42 remote from the mounting rod 2 is bent toward the sleeve structure 3.
Referring to fig. 1 and 3, the LED display screen connecting device further includes a grapple 5, and the grapple 5 is disposed at the other end of the mounting rod 2. Specifically, the middle of the grapple 5 is provided with a third through hole, the other end of the mounting rod 2 is provided with a third threaded hole, and the grapple 5 is fixed on the mounting rod 2 through a screw rod which penetrates through the third through hole and is connected with the third threaded hole. And the contact surface of grapple 5 and installation pole 2 is equipped with matched with location boss and pit to prevent that installation pole 2 from rotating 5 relative grapples, and then influence the angle of placing of display screen.
In summary, the LED display screen connecting device provided by the utility model has simple structure and convenient operation, and is beneficial for workers to install or dismount the display screen; the hanging effect is stable, and the display screen is not easy to fall off or shake when being hung on the hanging surface; the components are quickly disassembled and assembled, so that damaged components can be replaced conveniently; the LED display screen is suitable for occasions needing to be hung for use in public areas such as markets, squares and the like.
The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a LED display screen connecting device for connect the LED display screen, the LED display screen is including the display screen shell that has the connecting hole, its characterized in that: the clamping jaw structure is arranged at one end part of the mounting rod; the sleeve structure is sleeved on the mounting rod in a sliding manner; the claw structure comprises a connecting piece and at least two claws, and one end of each claw is hinged with the mounting rod; one end of the connecting piece is hinged with the middle part of the clamping jaw, and the other end of the connecting piece is hinged with the sleeve structure; when the LED display screen is connected, the clamping jaw structure penetrates through the connecting hole, the other end of the clamping jaw abuts against the inner wall surface of the display screen shell, and the sleeve structure abuts against the outer wall surface of the display screen shell.
2. The LED display screen connecting device of claim 1, wherein: the tip of installation pole is equipped with the support, a tip of jack catch with the support is articulated, be equipped with on the support and be used for conflicting sleeve pipe structure's conflict portion.
3. The LED display screen connecting device of claim 2, wherein: the bracket is fixed on the mounting rod through the first fastener.
4. The LED display screen connecting device of claim 1, wherein: the sleeve structure comprises a rotary sleeve and a sleeve connecting piece, the side wall of the sleeve connecting piece is hinged with the connecting piece, and the outer side wall of one end, far away from the clamping jaw, of the sleeve connecting piece is in threaded connection with the inner side wall of the rotary sleeve; the rotary sleeve is provided with a baffle at one end close to the clamping jaw, and the baffle abuts against the outer wall surface of the display screen shell at the connecting hole.
5. The LED display screen connecting device of claim 4, wherein: the installation pole is including continuous big footpath section and path section, the jack catch structure is located the path section is kept away from the tip of big footpath section, the bushing structure cover is located on the path section, just rotatory sheathed tube internal diameter is less than the external diameter of big footpath section.
6. The LED display screen connecting device according to claim 5, wherein: the length of the small diameter section is less than the sum of the lengths of the rotary sleeve and the sleeve connector.
7. The LED display screen connecting device of claim 4, wherein: and an anti-slip structure is arranged on the outer peripheral surface of the rotary sleeve.
8. The LED display screen connecting device of claim 7, wherein: the baffle plate is fixed on the rotating sleeve through the second fastening piece.
9. The LED display screen connecting device of claim 1, wherein: one end, far away from the mounting rod, of the clamping jaw is bent towards the direction close to the sleeve structure.
10. The LED display screen connecting device of claim 1, wherein: the mounting rod is characterized by further comprising a grab hook, and the grab hook is arranged at the other end of the mounting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123063501.9U CN216843781U (en) | 2021-12-07 | 2021-12-07 | LED display screen connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123063501.9U CN216843781U (en) | 2021-12-07 | 2021-12-07 | LED display screen connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843781U true CN216843781U (en) | 2022-06-28 |
Family
ID=82106459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123063501.9U Active CN216843781U (en) | 2021-12-07 | 2021-12-07 | LED display screen connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843781U (en) |
-
2021
- 2021-12-07 CN CN202123063501.9U patent/CN216843781U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5150868A (en) | Extensible interjoist hanger support assembly | |
| CN207593691U (en) | A kind of bearing extractor | |
| CN216843781U (en) | LED display screen connecting device | |
| WO2013000340A1 (en) | Expansion bolt and slip-proof expansion shield thereof | |
| CN103401200A (en) | Quick mounting suspension clamp | |
| CN201030537Y (en) | Universal shaft bearing remover | |
| CN102491196A (en) | Telescopic boom splitting method | |
| CN111009848A (en) | Transmission line shaft tower formula ground system | |
| CN203406582U (en) | Quick-to-install suspension wire clamp | |
| CA2855865C (en) | Equipment mounting bracket for steel truss | |
| CN210939016U (en) | Chain wrench with jaw | |
| CN201376252Y (en) | Adjustable assembler and disassembler | |
| CN110329924B (en) | Air condensing units hoist device | |
| CN2593677Y (en) | Clothes tree | |
| CN203215195U (en) | Portable multifunctional photographic bracket | |
| CN220520908U (en) | Washing machine back cover plate convenient to assemble and disassemble | |
| KR200417181Y1 (en) | Hanger for assembling a steel tower | |
| CN201114542Y (en) | A quick-connection spherical camera pan/tilt | |
| CN216920707U (en) | Horizontal safe pocket net suspension device for bolt ball node net rack | |
| CN218205864U (en) | Safety rope hanging structure for wall construction | |
| CN208845865U (en) | A kind of combined type connector for air hose installation | |
| CN214485337U (en) | Tunnel construction safety rope linkage | |
| CN218480427U (en) | Portable ambient air quality detection device | |
| CN213290106U (en) | Fuel injector dismounting device | |
| CN209943170U (en) | Suspender connecting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |