CN216948179U - Detachable overhanging trestle access hole drilling machine operation platform - Google Patents
Detachable overhanging trestle access hole drilling machine operation platform Download PDFInfo
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- CN216948179U CN216948179U CN202122786185.1U CN202122786185U CN216948179U CN 216948179 U CN216948179 U CN 216948179U CN 202122786185 U CN202122786185 U CN 202122786185U CN 216948179 U CN216948179 U CN 216948179U
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Abstract
The utility model provides a detachable overhanging type trestle access hole drilling machine operation platform, which comprises a drilling machine operation platform and a platform supporting structure, wherein the drilling machine operation platform is provided with a cantilever beam; the platform supporting structure comprises a cantilever bailey beam, a constructed trestle steel pipe pile, an auxiliary supporting pier, a transverse bearing beam, a guide fixing frame and a guide hole pier, wherein the transverse bearing beam is arranged at the bottom of the cantilever bailey beam, so that the stability of the cantilever bailey beam is further improved, and the fatigue damage of a component caused by the shaking of a cantilever is reduced; the drilling rig operation platform comprises a plurality of transverse distribution beams uniformly arranged above the cantilever Bailey beams and a platform panel arranged above the transverse distribution beams, and the punching drilling rig is arranged on the platform panel through a bolt fixing frame to perform punching operation. According to the utility model, the cantilever Bailey beam is connected with the constructed Bailey beam, so that the overall stability of the platform cantilever structure is improved, the fatigue damage of a component caused by the shaking of the cantilever is reduced, the positioning precision of the punching drilling machine is improved, the construction period is shortened, and the construction efficiency and safety are improved.
Description
Technical Field
The utility model belongs to the technical field of steel trestle construction punching operation, and particularly relates to a detachable overhanging type trestle hole-leading drilling machine operation platform.
Background
In the construction of the trestle on the exposed rock stratum, the hole leading construction of the steel pipe pile has important influence on the overall stability of the trestle, and the construction process has multiple modes, wherein one mode is the construction by utilizing a 'fishing method' of a crawler crane, namely the crawler crane is adopted to lift a vibration hammer to clamp the steel pipe pile, and the vibration hammer is utilized to drive the steel pipe pile into a riverbed, but the method is not suitable for the drilling construction of thick rock in the riverbed stratum; the other kind is the construction that adopts "ship pilot hole", and application for patent number 201920724841.5 provides a shipborne percussion drill pilot hole device for under the bare rock condition, including the pilot hole equipment, the pilot hole equipment includes the hull, is provided with punching device and fixing device on this hull, and the shipborne percussion drill pilot hole technology relies on the installation percussion drill on the plate ship to fix the ship through the four corners anchorage, play the effect of a interim drilling platform, and adjust the position of hull through the hoist engine on every corner, ensure the precision of location, nevertheless have the more easy collision incident that produces of ship, and the problem that cross construction influences the construction work efficiency.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a detachable overhanging type trestle hole drilling machine operation platform which is high in safety, fast in work efficiency and convenient and fast to install and detach.
The technical scheme of the utility model is as follows: a detachable overhanging trestle hole-leading drilling machine operation platform comprises a drilling machine operation platform and a platform supporting structure;
the platform supporting structure comprises a cantilever bailey beam, a constructed trestle steel pipe pile, an auxiliary supporting pier, a transverse bearing beam, a guide fixing frame and a guide hole pier, wherein one end of the cantilever bailey beam is erected above the constructed trestle steel pipe pile by pin joint with the constructed bailey beam, the constructed trestle steel pipe pile is erected at the joint of the cantilever bailey beam and the constructed bailey beam, the auxiliary supporting pier is fixedly arranged on a riverbed, the transverse bearing beam is transversely arranged and connected with the auxiliary supporting pier, the guide fixing frame is arranged at the end part of the cantilever bailey beam, and the guide hole pier is connected with the guide fixing frame;
the drilling rig operation platform comprises a plurality of transverse distribution beams uniformly arranged above the cantilever Bailey beams and a platform panel arranged above the transverse distribution beams, and the punching drilling rig is arranged on the platform panel through a bolt fixing frame to perform punching operation.
Preferably, the direction mount includes upper portion horizontal connecting rod, vertical connecting rod, longitudinal tie rod, slope connecting rod, bottom horizontal connecting rod, fixed stopper will the fixed restriction of upper portion horizontal connecting rod is in the tip of cantilever bailey roof beam, vertical connecting rod sets up the bottom at upper portion horizontal connecting rod both ends, longitudinal tie rod sets up the bottom at vertical connecting rod, the slope connecting rod sets up between vertical connecting rod and longitudinal tie rod, bottom horizontal connecting rod sets up between two longitudinal tie rods.
Preferably, the lateral part of the auxiliary support pier is provided with auxiliary support legs, the bottom surface of the transverse bearing beam is connected with the auxiliary support legs in a welding mode, the fixed connection surface of the transverse bearing beam and the auxiliary support pier is increased, and the support stability is further improved.
Preferably, the fixed limiter is a U-shaped bolt.
Preferably, the number of the bottom transverse connecting rods is 1, the bottom transverse connecting rods are arranged at one end far away from the cantilever bailey beam, and the longitudinal connecting rods, the bottom transverse connecting rods and the side faces of the hole guiding piers are welded and fixed, so that the hole guiding piers are prevented from being deflected and sinking in the hole guiding process.
Preferably, the middle part of the bottom transverse connecting rod is of an arc-shaped structure and is suitable for a cylindrical column guiding pier.
Preferably, the number of the bottom transverse connecting rods is 2, the bottom transverse connecting rods are arranged on two sides of the guide hole pier, and the guide hole pier is limited and fixed through a space formed by the bottom transverse connecting rods and the longitudinal connecting rods.
Preferably, the longitudinal connecting rod and the bottom of the upper transverse connecting rod are respectively provided with a sliding groove, the bottom transverse connecting rod is fixed in the sliding groove of the longitudinal connecting rod through a fixing bolt, the vertical connecting rod is fixed in the sliding groove of the upper transverse connecting rod through a fixing bolt, the position of the bottom transverse connecting rod can be adjusted when the fixing bolt is unscrewed, and therefore the longitudinal space is adjusted, the position of the vertical connecting rod is adjusted, and the transverse space is adjusted to adapt to the sizes of different guide pillar piers.
Preferably, the side of platform panel is equipped with safety protection railing, ensures the operation safety.
The utility model has the beneficial effects that:
1. the utility model fully utilizes the constructed steel trestle structure, and the cantilever Bailey beam is connected at the end part of the constructed Bailey beam to be used as the foundation of the operation platform of the punching drill, thereby saving the working procedure and the material for building the bracket on the bare rock in the prior art, reducing the difficulty for building the bracket, reducing the construction period, improving the construction efficiency and the safety, simultaneously avoiding the problem that the construction can not be carried out by using a crawler crane 'fishing method' because the stratum rock of the riverbed is thick, and also avoiding the problems that the collision safety accident is easily generated by more ships when the 'ship guide hole' is used for construction, and the construction efficiency is influenced by cross construction;
2. according to the drilling rig operation platform, the auxiliary support piers are arranged at the bottom of the cantilever bailey beam, so that the overall stability of the drilling rig operation platform is improved;
3. the guide hole pier is limited and positioned by the guide fixing frame, so that the verticality of the guide hole pier is ensured, and the positioning precision of the punching drilling machine is improved;
4. the drilling machine operation platform is arranged in a suspended mode, the influence on the passage of a navigation channel is small, compared with ship guide hole construction, the safety is higher, the pollution to a water area is smaller, the environmental protection performance is higher, and the stability of connection with a constructed trestle is higher;
5. the auxiliary support pier is arranged on the riverbed, so that when the riverbed in a construction water area is flat and the covering layer is thin, the construction requirement is met, the integral stability of the platform is improved, and the platform is convenient to mount and dismount.
Drawings
FIG. 1 is a schematic structural diagram of a detachable overhanging type trestle hole-leading drilling rig operating platform;
FIG. 2 is a side view of a guide mount of the removable overhanging trestle hole-drilling rig work platform of FIG. 1;
FIG. 3 is a schematic top view of a first embodiment of a guide mount of the removable cantilever drill rig access platform of FIG. 2;
FIG. 4 is a schematic top view of a second embodiment of a guide mount of the removable cantilever drill rig access platform of FIG. 2;
FIG. 5 is a schematic view of a bottom cross-link structure of a third embodiment of a guide mount of a removable cantilever trestle hole-drilling rig work platform of FIG. 2;
wherein: 1. the construction method comprises the steps of constructing a Bailey beam, 2 constructing a trestle steel pipe pile, 3 constructing auxiliary support piers, 4 constructing a cantilever Bailey beam, 5 constructing a platform panel, 6 constructing a punching drilling machine, 7 constructing a transverse distribution beam, 8 constructing a drill bit, 9 constructing a guide fixing frame, 10 constructing a guide hole pier, 11 constructing auxiliary supporting legs, 12 constructing a transverse bearing beam, 91 constructing an upper transverse connecting rod, 92 constructing a vertical connecting rod, 93 constructing a longitudinal connecting rod, 94 constructing an inclined connecting rod, 95 constructing a bottom transverse connecting rod, 96 constructing a fixing limiter, 97 constructing a sliding chute, 98 constructing a fixing bolt.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
The first embodiment is as follows: as shown in fig. 1-3, a detachable overhanging trestle hole-leading drilling rig operation platform comprises a drilling rig operation platform and a platform supporting structure;
the platform supporting structure comprises a cantilever bailey beam 4, an auxiliary supporting pier 3, a transverse bearing beam 12, a guide fixing frame 9 and a hole guiding pier 10, wherein one end of the cantilever bailey beam 4 is erected above a constructed trestle steel pipe pile 2 by being in pin joint with a constructed bailey beam 1, the auxiliary supporting pier is fixedly arranged on a riverbed, the transverse bearing beam 12 is transversely arranged and connected with the auxiliary supporting pier 3, the guide fixing frame 9 is arranged at the end part of the cantilever bailey beam 4, the hole guiding pier is connected with the guide fixing frame 9, the transverse bearing beam 12 is arranged at the bottom of the cantilever bailey beam 4, the stability of the cantilever bailey beam 4 is further improved, and the fatigue damage of a component caused by cantilever shaking is reduced; the drilling rig operation platform comprises a plurality of transverse distribution beams 7 uniformly arranged above a cantilever Bailey beam 4 and a platform panel 5 arranged above the transverse distribution beams 7, a punching drilling rig 6 is arranged on the platform panel 5 through a bolt fixing frame for punching operation, the guide fixing frame 9 comprises an upper transverse connecting rod 91, a vertical connecting rod 92, a longitudinal connecting rod 93, an inclined connecting rod 94, a bottom transverse connecting rod 95 and a fixing limiter 96, the fixing limiter 96 fixedly limits the upper transverse connecting rod 91 at the end part of the cantilever Bailey beam 4, the vertical connecting rod 92 is arranged at the bottom of two ends of the upper transverse connecting rod 91, the longitudinal connecting rod 93 is arranged at the bottom of the vertical connecting rod 92, the inclined connecting rod 94 is arranged between the vertical connecting rod 92 and the longitudinal connecting rod 93, the bottom transverse connecting rod 95 is arranged between the two longitudinal connecting rods 93, the number of the bottom transverse connecting rods 95 is 1, the setting is in the one end of keeping away from cantilever bailey roof beam 4, the side welded fastening of longitudinal tie rod 93, bottom transverse connecting rod 95 and draw hole mound 10 avoids drawing hole mound 10 to produce to squint and sink in the hole process, the side of platform panel 5 is equipped with safety protection railing, ensures the operation safety.
In order to increase the fixed connection surface between the transverse bearing beam 12 and the auxiliary support pier 3 and further improve the support stability, the side part of the auxiliary support pier 3 is provided with an auxiliary support leg 11, and the bottom surface of the transverse bearing beam 12 is connected with the auxiliary support leg 11 in a welding manner.
The fixed stop 96 is a U-bolt.
The second embodiment is: as shown in fig. 1, 2 and 4, a detachable overhanging trestle hole-leading drilling machine operation platform comprises a drilling machine operation platform and a platform supporting structure;
the platform supporting structure comprises a cantilever bailey beam 4, an auxiliary supporting pier 3, a transverse bearing beam 12, a guide fixing frame 9 and a hole guiding pier 10, wherein one end of the cantilever bailey beam 4 is erected above a constructed trestle steel pipe pile 2 by being in pin joint with a constructed bailey beam 1, the auxiliary supporting pier is fixedly arranged on a riverbed, the transverse bearing beam 12 is transversely arranged and connected with the auxiliary supporting pier 3, the guide fixing frame 9 is arranged at the end part of the cantilever bailey beam 4, the hole guiding pier is connected with the guide fixing frame 9, the transverse bearing beam 12 is arranged at the bottom of the cantilever bailey beam 4, the stability of the cantilever bailey beam 4 is further improved, and the fatigue damage of a component caused by cantilever shaking is reduced; the drilling rig operation platform comprises a plurality of transverse distribution beams 7 uniformly arranged above a cantilever Bailey beam 4 and a platform panel 5 arranged above the transverse distribution beams 7, a punching drilling rig 6 is arranged on the platform panel 5 through a bolt fixing frame for punching operation, the guide fixing frame 9 comprises an upper transverse connecting rod 91, a vertical connecting rod 92, a longitudinal connecting rod 93, an inclined connecting rod 94, a bottom transverse connecting rod 95 and a fixing limiter 96, the upper transverse connecting rod 91 is fixedly limited at the end part of the cantilever Bailey beam 4 by the fixing limiter 96, the vertical connecting rod 92 is arranged at the bottom of the two ends of the upper transverse connecting rod 91, the longitudinal connecting rod 93 is arranged at the bottom of the vertical connecting rod 92, the inclined connecting rod 94 is arranged between the vertical connecting rod 92 and the longitudinal connecting rod 93, the bottom transverse connecting rod 95 is arranged between the two longitudinal connecting rods 93, the number of the bottom transverse connecting rods 95 is 2, the setting is in draw the both sides of hole mound 10, through the fixed hole mound 10 that draws of space restriction with longitudinal tie 93 formation, avoid drawing the hole in-process and draw hole mound 10 to produce the skew and sink, the side of platform panel 5 is equipped with safety protection railing, and guarantee operation safety, fixed stopper 96 is U type bolt.
In order to further increase the fixed connection surface between the transverse bearing beam 12 and the auxiliary support pier 3 and further improve the support stability, the side part of the auxiliary support pier 3 is provided with an auxiliary support leg 11, and the bottom surface of the transverse bearing beam 12 is connected with the auxiliary support leg 11 in a welding manner.
In order to further improve the application range, sliding grooves 97 are formed in the longitudinal connecting rod 93 and the bottom of the upper transverse connecting rod 91, the bottom transverse connecting rod 95 is fixed in the sliding groove 97 in the longitudinal connecting rod 93 through a fixing bolt 98, the vertical connecting rod 92 is fixed in the sliding groove 97 in the upper transverse connecting rod 91 through the fixing bolt 98, the position of the bottom transverse connecting rod 95 can be adjusted when the fixing bolt 98 is loosened, so that the longitudinal space is adjusted, the position of the vertical connecting rod 92 is adjusted, so that the transverse space is adjusted, and the size of different column guide piers is adapted.
The third embodiment is: as shown in fig. 1-2 and 5, a detachable overhanging trestle hole-leading drilling machine operation platform comprises a drilling machine operation platform and a platform supporting structure;
the platform supporting structure comprises a cantilever bailey beam 4, an auxiliary supporting pier 3, a transverse bearing beam 12, a guide fixing frame 9 and a hole guiding pier 10, wherein one end of the cantilever bailey beam 4 is erected above a constructed trestle steel pipe pile 2 by being in pin joint with a constructed bailey beam 1, the auxiliary supporting pier is fixedly arranged on a riverbed, the transverse bearing beam 12 is transversely arranged and connected with the auxiliary supporting pier 3, the guide fixing frame 9 is arranged at the end part of the cantilever bailey beam 4, the hole guiding pier is connected with the guide fixing frame 9, the transverse bearing beam 12 is arranged at the bottom of the cantilever bailey beam 4, the stability of the cantilever bailey beam 4 is further improved, and the fatigue damage of a component caused by cantilever shaking is reduced; the drilling rig operation platform comprises a plurality of transverse distribution beams 7 uniformly arranged above a cantilever Bailey beam 4 and a platform panel 5 arranged above the transverse distribution beams 7, a punching drilling rig 6 is arranged on the platform panel 5 through a bolt fixing frame for punching operation, the guide fixing frame 9 comprises an upper transverse connecting rod 91, a vertical connecting rod 92, a longitudinal connecting rod 93, an inclined connecting rod 94, a bottom transverse connecting rod 95 and a fixing limiter 96, the upper transverse connecting rod 91 is fixedly limited at the end part of the cantilever Bailey beam 4 by the fixing limiter 96, the vertical connecting rod 92 is arranged at the bottom of the two ends of the upper transverse connecting rod 91, the longitudinal connecting rod 93 is arranged at the bottom of the vertical connecting rod 92, the inclined connecting rod 94 is arranged between the vertical connecting rod 92 and the longitudinal connecting rod 93, the bottom transverse connecting rod 95 is arranged between the two longitudinal connecting rods 93, the number of the bottom transverse connecting rods 95 is 2, the setting is in draw the both sides of hole mound 10, through the fixed hole mound 10 that draws of space restriction that forms with longitudinal tie 93, avoid drawing the hole in-process and draw hole mound 10 to produce to squint and sink, the side of platform panel 5 is equipped with safety protection railing, and guarantee operation safety, fixed stopper 96 is U type bolt.
In order to further increase the fixed connection surface between the transverse bearing beam 12 and the auxiliary support pier 3 and further improve the support stability, the side part of the auxiliary support pier 3 is provided with an auxiliary support leg 11, and the bottom surface of the transverse bearing beam 12 is connected with the auxiliary support leg 11 in a welding manner.
Further to accommodate the cylindrical pier 10, the middle portion of the bottom cross-link 95 is of an arcuate configuration.
The specific working process of the utility model is as follows:
s1: and (3) mounting the cantilever bailey beam 4: when hole guiding operation of the N-span steel pipe pile is constructed, the cantilever Bailey beam 4 is connected with the N-1 span constructed Bailey beam 1;
s2: and (3) installing an auxiliary support pier: a transverse weighing beam 12 is additionally arranged at the bottom of a cantilever bailey beam 4 below a cantilever of the punching drilling machine, two ends of the transverse weighing beam and two auxiliary support piers 3 are welded and supported on a riverbed, the length of the punching drilling machine 6 is 7.5 meters, and the auxiliary support piers 3 are arranged at the position 6m away from the cantilever of the punching drilling machine;
s3: the guide fixing frame 9 and the lead hole pier 10 are installed: the front end of the cantilever bailey beam 4 is connected with a fixed guide fixing frame 9, after the guide hole pile position is accurately set out, the guide hole pier 10 is placed at the setting out position by a crawler crane, and the guide hole pier 10 is positioned and fixed by the guide fixing frame 9, so that the guide hole pier 10 is ensured to be vertical, and the guide hole pier 10 is prevented from being deflected and sunk in the guide hole process;
s4: the platform panel 5 is installed: after the cantilever Bailey beam 4 is stably installed, the transverse distribution beam 7 is effectively connected with the cantilever Bailey beam, a platform panel 5 which is assembled in advance is paved on the transverse distribution beam 7 after the transverse distribution beam is completed, and the platform panel 5 is welded and fixed;
s5: installing a punching drill 6: after the installation and erection of the drilling machine operation platform are completed, the punching drilling machine 6 is hoisted to a proper position, is welded with the platform panel 5, a safety protection railing is installed, punching operation is started by using a drill bit 8, and the drill bit 8 is arranged in a lead hole pier 10;
s6: and (3) completing the Nth span construction: and after the punching operation is completed, disassembling the punching drill 6, the drill operation platform and the platform supporting structure, hoisting the drilling drill, the drill operation platform and the platform supporting structure to a safe area, and repeating the steps to perform the (N + 1) th-span trestle punching operation after the construction of the upper structure of the Nth-span trestle is completed.
While the preferred embodiments of the utility model have been described, it is to be understood that the utility model is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A detachable overhanging trestle hole-leading drilling machine operation platform is characterized by comprising a drilling machine operation platform and a platform supporting structure;
the platform supporting structure comprises a cantilever bailey beam, a constructed trestle steel pipe pile, an auxiliary supporting pier, a transverse bearing beam, a guide fixing frame and a guide hole pier, wherein one end of the cantilever bailey beam is erected above the constructed trestle steel pipe pile by pin joint with the constructed bailey beam, the constructed trestle steel pipe pile is erected at the joint of the cantilever bailey beam and the constructed bailey beam, the auxiliary supporting pier is fixedly arranged on a riverbed, the transverse bearing beam is transversely arranged and connected with the auxiliary supporting pier, the guide fixing frame is arranged at the end part of the cantilever bailey beam, and the guide hole pier is connected with the guide fixing frame;
the drilling rig operation platform comprises a plurality of transverse distribution beams uniformly arranged above the cantilever Bailey beams and a platform panel arranged above the transverse distribution beams, and the punching drilling rig is arranged on the platform panel through a bolt fixing frame to perform punching operation.
2. The detachable overhanging type trestle hole-penetrating drilling rig working platform according to claim 1, wherein the guide fixing frame comprises an upper transverse connecting rod, a vertical connecting rod, a longitudinal connecting rod, an inclined connecting rod, a bottom transverse connecting rod and a fixing limiter, the fixing limiter is used for fixedly limiting the upper transverse connecting rod at the end part of the cantilever bailey beam, the vertical connecting rod is arranged at the bottom of two ends of the upper transverse connecting rod, the longitudinal connecting rod is arranged at the bottom of the vertical connecting rod, the inclined connecting rod is arranged between the vertical connecting rod and the longitudinal connecting rod, and the bottom transverse connecting rod is arranged between the two longitudinal connecting rods.
3. The detachable overhanging type trestle hole-penetrating drilling machine working platform as claimed in claim 1, wherein auxiliary support legs are arranged on the side parts of the auxiliary support piers, and the bottom surface of the transverse bearing beam is connected with the auxiliary support legs in a welding manner.
4. The detachable overhanging trestle hole-penetrating drilling rig work platform of claim 2, wherein the fixed limiter is a U-bolt.
5. The detachable overhanging type trestle hole-leading drilling machine working platform as claimed in claim 2, wherein the number of the bottom transverse connecting rods is 1, the bottom transverse connecting rods are arranged at one end far away from the cantilever bailey beam, and the longitudinal connecting rods, the bottom transverse connecting rods and the side faces of the hole-leading piers are welded and fixed.
6. The detachable overhanging trestle hole-penetrating drilling rig work platform of claim 5, wherein the middle part of the bottom cross connecting rod is of an arc-shaped structure.
7. The detachable cantilever type trestle hole-leading drilling machine operation platform as claimed in claim 2, wherein the number of the bottom transverse connecting rods is two, the two bottom transverse connecting rods are arranged on two sides of the hole-leading pier, and the hole-leading pier is fixed through space limitation formed by the two bottom transverse connecting rods and the longitudinal connecting rods.
8. The detachable overhanging type trestle hole-leading drilling machine working platform according to claim 7, wherein sliding grooves are respectively formed in the longitudinal connecting rod and the bottom of the upper transverse connecting rod, the bottom transverse connecting rod is fixed in the sliding groove in the longitudinal connecting rod through a fixing bolt, and the vertical connecting rod is fixed in the sliding groove in the upper transverse connecting rod through a fixing bolt.
9. The detachable overhanging type trestle hole-penetrating drilling rig working platform of claim 1, wherein a safety guard rail is arranged on the side surface of the platform panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122786185.1U CN216948179U (en) | 2021-11-15 | 2021-11-15 | Detachable overhanging trestle access hole drilling machine operation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122786185.1U CN216948179U (en) | 2021-11-15 | 2021-11-15 | Detachable overhanging trestle access hole drilling machine operation platform |
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| CN216948179U true CN216948179U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122786185.1U Active CN216948179U (en) | 2021-11-15 | 2021-11-15 | Detachable overhanging trestle access hole drilling machine operation platform |
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| CN (1) | CN216948179U (en) |
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2021
- 2021-11-15 CN CN202122786185.1U patent/CN216948179U/en active Active
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