CN213738401U - Lifting platform with built-in stabilizing base for geological survey - Google Patents

Lifting platform with built-in stabilizing base for geological survey Download PDF

Info

Publication number
CN213738401U
CN213738401U CN202022292313.2U CN202022292313U CN213738401U CN 213738401 U CN213738401 U CN 213738401U CN 202022292313 U CN202022292313 U CN 202022292313U CN 213738401 U CN213738401 U CN 213738401U
Authority
CN
China
Prior art keywords
fixedly connected
wall
shaft
base
plate
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.)
Expired - Fee Related
Application number
CN202022292313.2U
Other languages
Chinese (zh)
Inventor
郝振富
常恒
王宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN202022292313.2U priority Critical patent/CN213738401U/en
Application granted granted Critical
Publication of CN213738401U publication Critical patent/CN213738401U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Handcart (AREA)

Abstract

The utility model discloses a lifting platform with a built-in stable base for geological survey, which comprises a lifting platform body and a protective shell, wherein the outer wall of the lifting platform body is provided with the protective shell, the interior of a placing groove is provided with a stable seat, the stable seat is arranged on the outer walls of four sides, the equipment can be well stabilized, simultaneously, the stability of each connecting part is well protected through a shock absorption spring, the service life is prolonged, the stable seat can be folded and retracted through the cooperation of a movable block, a connecting hole, a fixed shaft, a damping shaft, a telescopic rod and a limiting block, the occupied space is reduced, the equipment is convenient to move, the problem that the heights of the stable seat and a universal wheel are difficult to adjust and are difficult to exist simultaneously is solved, the heights of an outer protective plate, a telescopic groove, an inner protective plate, a sliding groove, a fixing piece and a roller are matched to realize extension and contraction, and the protective shell can adjust the heights in real time, therefore, the full-closed protection is achieved, the safety of equipment is improved, the risk of accidents is reduced, the structure is excellent, and the use is convenient.

Description

Lifting platform with built-in stabilizing base for geological survey
Technical Field
The utility model relates to a geological survey equipment technical field specifically is a geological survey is with lift platform of built-in stable base.
Background
The lifting platform is a hoisting machine for vertically transporting people or objects. Also refers to equipment for vertical conveying in logistics systems such as factories and automatic warehouses, and various plane conveying equipment is often arranged on the lifting platform and is used as a connecting device for conveying lines with different heights. The hydraulic lifting platform is generally driven by hydraulic pressure, so the lifting platform is called as a hydraulic lifting platform. The device is widely applied to high-altitude installation, maintenance and other operations besides being used for conveying goods with different heights. The characteristic that lift platform freely goes up and down has widely been applied to municipal maintenance, pier, commodity circulation center freight, building decoration etc. has installed that car chassis, storage battery car chassis etc. can freely walk, and the working height space also changes to some extent, has light in weight, from walking, electric start, from the landing leg, easy operation, operation face are big, can stride across 360 degrees free rotation advantages such as obstacle carries out high altitude construction.
Can use lift platform often in the geological survey in-process, because lift platform need be convenient for remove, often the bottom is provided with the universal wheel, but the wheel face does not have stability when the operation, and the attempt needs external force to consolidate stably, and the operation is extremely inconvenient, secondly, because lift platform adopts the scissors fork formula more, there is very big potential safety hazard in the in-process of extension shrink in outer hinge frame and inner hinge frame, may cause the clamp injury of certain degree to the staff.
Therefore, we propose a lifting platform with a built-in stabilizing base for geological surveying.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a geological survey is with built-in lift platform who stabilizes base, through the cooperation of protection casing and folding steady seat to the problem that proposes in the above-mentioned background has been solved.
In order to achieve the above object, the utility model provides a following technical scheme: a lifting platform with a built-in stable base for geological survey comprises a lifting platform body and a protective shell, wherein the protective shell is arranged on the outer wall of the lifting platform body, the lifting platform body comprises a bottom plate, universal wheels, a placing groove, a stable seat, a movable groove, an outer hinged frame, a connecting shaft, an inner hinged frame, a fixed block and a top supporting plate, wherein the universal wheels are fixedly connected to four corners of the lower end of the bottom plate respectively, the placing grooves are formed in the side walls of the four sides of the bottom plate respectively, the stable seat is arranged inside the placing groove, the movable grooves are symmetrically formed in the inner walls of the two sides of the bottom plate, the outer hinged frame is movably connected between the inner walls of the two sides of the bottom plate, the connecting shaft is arranged on the outer wall in the middle of the outer hinged frame through bolts, the other end of the connecting shaft is movably connected with the inner hinged frame, the fixed block is fixedly connected to the upper end of one side of the bottom plate, the inner hinged frame is fixedly connected with the fixed block through bolts, and the top supporting plates are fixedly connected to the top ends of the outer hinged frame and the inner hinged frame;
the protection casing includes outer protection shield, flexible groove, interior protection shield, spout, mounting and gyro wheel, and flexible groove has been seted up to the inside of outer protection shield, and flexible inslot portion activity is provided with interior protection shield, and the spout has been seted up to the inner wall middle department of interior protection shield, fixedly connected with mounting on the inner wall on outer protection shield top, swing joint has the gyro wheel between the inner wall of mounting.
Further, the stable seat includes the movable block, the connecting hole, the fixed axle, the damping axle, the telescopic link, the stopper, the cylinder, a pedestal, slipmat and cushioning spring, the connecting hole has been seted up to movable block one end, fixedly connected with fixed axle between the inner wall of the other end of movable block, the damping axle has been cup jointed in the activity on the outer wall of fixed axle, fixedly connected with telescopic link on the lateral wall of damping axle, fixedly connected with stopper on the outer wall of being close to damping axle one end of telescopic link, the cylinder has been cup jointed in the other end activity of telescopic link, the bottom fixedly connected with base of cylinder, the other end outer wall of base has coated the one deck slipmat, the cushioning spring has been cup jointed on the outer wall of telescopic link and cylinder, and the one end and the slipmat fixed connection of cushioning spring.
Further, the diameter size of base is less than the degree of depth distance size of standing groove, and the length of stabilizing the seat is less than the length of standing groove.
Furthermore, a movable shaft is movably connected between the inner walls of the outer hinged frames, a pulley is movably connected at one end of the movable shaft, a connecting plate is fixedly connected between the inner walls at the bottom ends of the two outer hinged frames, a connecting piece is arranged at the upper end of the connecting plate, and a hydraulic rod is fixedly connected between the inner walls of the connecting piece.
Furthermore, the hydraulic rods are arranged in two groups, and the tail ends of the hydraulic rods are fixedly connected to the outer wall of the inner hinge frame.
Further, the height of outer protection shield and interior protection shield equals with the maximum height that the lift platform body extends, and the bottom of outer protection shield and the top of interior protection shield fixed connection respectively are in the upper end of bottom plate and the bottom of top backup pad.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model provides a lifting platform of built-in stable base is used in geological survey, the standing groove has been seted up on the four sides lateral wall of bottom plate respectively, the inside of standing groove is provided with stable seat, the other end outer wall of base has coated the one deck slipmat, the bradyseism spring has been cup jointed on the outer wall of telescopic link and cylinder, and the one end and the slipmat fixed connection of bradyseism spring, all be provided with stable seat through the four sides outer wall, can be fine stabilize equipment, the cooperation of bradyseism spring and cylinder is realized carrying out effectual reduction to the vibrations that equipment moved the production on it, fine protection the stability of each junction, prolonged service life.
2. The utility model provides a lifting platform of built-in stable base is used in geological survey, the connecting hole has been seted up to movable block one end, fixedly connected with fixed axle between the inner wall of the other end of movable block, the damping axle has been cup jointed in the activity on the outer wall of fixed axle, fixedly connected with telescopic link on the lateral wall of damping axle, fixedly connected with stopper on the outer wall of being close to damping axle one end of telescopic link, each parts cooperation has realized that stable seat can fold when not using and withdraw, reduce occupation space, make things convenient for the removal of lifting platform body, stable seat and the highly difficult adjustment of universal wheel have also been solved simultaneously, be difficult to the problem that exists simultaneously, all there is very high promotion in space and the function, convenient and practical.
3. The utility model provides a geological survey is with lift platform of built-in stable base, flexible groove has been seted up to the inside of outer protection shield, flexible inslot portion activity is provided with interior protection shield, the spout has been seted up to the department in the middle of the inner wall of interior protection shield, fixedly connected with mounting on the inner wall on outer protection shield top, swing joint has the gyro wheel between the inner wall of mounting, the cooperation is realized extending the shrink at the lift platform body in, but the height-adjusting simultaneously of protection casing, thereby reach the totally closed protection to inner structure, the security of equipment when using has wholly been improved, reduce the risk that the occurence of failure, the protection staff.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the lifting platform body of the present invention;
FIG. 3 is a schematic view of a stable seat of the present invention;
fig. 4 is a schematic view of the protective casing structure of the present invention.
In the figure: 1. a lifting platform body; 11. a base plate; 12. a universal wheel; 13. a placement groove; 14. a stabilizing base; 141. a movable block; 142. connecting holes; 143. a fixed shaft; 144. a damping shaft; 145. a telescopic rod; 146. a limiting block; 147. a cylinder; 148. a base; 149. a non-slip mat; 1410. a cushioning spring; 15. a movable groove; 16. an external hinged frame; 161. a movable shaft; 162. a pulley; 163. a connecting plate; 164. a connecting member; 165. a hydraulic lever; 17. a connecting shaft; 18. an internal hinge frame; 19. a fixed block; 110. a top support plate; 2. a protective housing; 21. an outer protective plate; 22. a telescopic groove; 23. an inner protective plate; 24. a chute; 25. a fixing member; 26. and a roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, a lifting platform with a built-in stable base for geological survey comprises a lifting platform body 1 and a protective shell 2, wherein the protective shell 2 is arranged on the outer wall of the lifting platform body 1, the lifting platform body 1 comprises a bottom plate 11, universal wheels 12, placing grooves 13, stable seats 14, movable grooves 15, outer hinged brackets 16, a connecting shaft 17, inner hinged brackets 18, fixed blocks 19 and a top supporting plate 110, the universal wheels 12 are respectively and fixedly connected with four corners of the lower end of the bottom plate 11, the placing grooves 13 are respectively arranged on four side walls of the bottom plate 11, the stable seats 14 are arranged inside the placing grooves 13, the movable grooves 15 are symmetrically arranged on the inner walls of two sides of the bottom plate 11, the outer hinged brackets 16 are movably connected between the inner walls of the two sides of the bottom plate 11, movable shafts 161 are movably connected between the inner walls of the outer hinged brackets 16, one end of the movable shafts 161 is movably connected with pulleys 162, and a connecting plate 163 is fixedly connected between the inner walls of the bottom ends of the two outer hinged brackets 16, the upper end of connecting plate 163 is provided with connecting piece 164, fixedly connected with hydraulic stem 165 between the inner wall of connecting piece 164, hydraulic stem 165 sets up two sets ofly, and on the outer wall of internal hinge frame 18, be provided with connecting axle 17 through the bolt on the outer wall in the middle of external hinge frame 16, the other end swing joint of connecting axle 17 has internal hinge frame 18, the upper end fixedly connected with fixed block 19 of bottom plate 11 one side, internal hinge frame 18 passes through bolt and fixed block 19 fixed connection, the top fixedly connected with top backup pad 110 of external hinge frame 16 and internal hinge frame 18.
Referring to fig. 3, a lifting platform with a built-in stable base for geological survey, wherein a stable base 14 comprises a movable block 141, a connecting hole 142, a fixed shaft 143, a damping shaft 144, an expansion link 145, a limit block 146, a cylinder 147, a base 148, an anti-slip pad 149 and a damping spring 1410, the connecting hole 142 is formed at one end of the movable block 141, the fixed shaft 143 is fixedly connected between the inner walls of the other end of the movable block 141, the damping shaft 144 is movably sleeved on the outer wall of the fixed shaft 143, the expansion link 145 is fixedly connected to the side wall of the damping shaft 144, the limit block 146 is fixedly connected to the outer wall of the expansion link 145 near one end of the damping shaft 144, all the components are matched to realize that the stable base 14 can be folded and retracted when not in use, so that the occupied space is reduced, the lifting platform body 1 is convenient to move, meanwhile, the problems that the heights of the stable base 14 and the universal wheels 12 are not easy to adjust and difficult to exist simultaneously are solved, and the space and the function is greatly improved, convenient and fast practicality, cylinder 147 has been cup jointed in the other end activity of telescopic link 145, the bottom fixedly connected with base 148 of cylinder 147, the diameter size of base 148 is less than standing groove 13's degree of depth distance size, and the length of stabilizing seat 14 is less than standing groove 13's length, base 148's other end outer wall is coated with one deck slipmat 149, cushioning spring 1410 has been cup jointed on telescopic link 145 and the outer wall of cylinder 147, and cushioning spring 1410's one end and slipmat 149 fixed connection, all be provided with stabilizing seat 14 through the four sides outer wall, can be fine stabilize equipment, cushioning spring 1410 carries out effectual reduction to the vibrations that equipment produced above the operation simultaneously with the cooperation realization of cylinder 147, fine protection the stability of each junction, and long service life.
Referring to fig. 4, a lifting platform with a built-in stable base for geological survey, a protective shell 2 comprises an outer protective plate 21, a telescopic groove 22, an inner protective plate 23, a sliding groove 24, a fixing piece 25 and a roller 26, the telescopic groove 22 is arranged in the outer protective plate 21, the inner protective plate 23 is movably arranged in the telescopic groove 22, the sliding groove 24 is arranged in the middle of the inner wall of the inner protective plate 23, the fixing piece 25 is fixedly connected to the inner wall of the top end of the outer protective plate 21, the roller 26 is movably connected between the inner walls of the fixing piece 25, the height of the protective shell 2 can be adjusted simultaneously when the lifting platform body 1 extends and contracts in a matching manner, thereby achieving the totally-enclosed protection of the internal structure, integrally improving the safety of the equipment during use, reducing the risk of accidents, protecting the working personnel, the height of the outer protective plate 21 and the inner protective plate 23 is equal to the maximum height of the lifting platform body 1, and the bottom end of the outer protection plate 21 and the top end of the inner protection plate 23 are fixedly connected to the upper end of the base plate 11 and the bottom end of the top support plate 110, respectively.
In summary, the following steps: the utility model provides a lifting platform of built-in stable base for geological survey, the standing groove 13 has been seted up on the four sides lateral wall of bottom plate 11 respectively, the inside of standing groove 13 is provided with stable seat 14, the other end outer wall of base 148 coats and is had one deck slipmat 149, the bradyseism spring 1410 has been cup jointed on the outer wall of telescopic link 145 and cylinder 147, and the one end and the slipmat 149 fixed connection of bradyseism spring 1410, all be provided with stable seat 14 through the outer wall of four sides, can be fine stabilize equipment, the cooperation of bradyseism spring 1410 and cylinder 147 realizes effectively reducing the vibrations that equipment produced in operation on it simultaneously, the stability of each junction has been protected fine, increase of service life; the lifting platform comprises a lifting platform body 1, a movable block 141, a connecting hole 142, a fixed shaft 143, a damping shaft 144, a telescopic rod 145 and a limiting block 146, wherein the connecting hole 142 is formed in one end of the movable block 141, the fixed shaft 143 is fixedly connected between the inner walls of the other end of the movable block 141, the damping shaft 144 is movably sleeved on the outer wall of the fixed shaft 143, the telescopic rod 145 is fixedly connected to the side wall of the damping shaft 144, and the limiting block 146 is fixedly connected to the outer wall of the telescopic rod 145, which is close to one end of the damping shaft 144; flexible groove 22 has been seted up to the inside of outer protection shield 21, flexible groove 22 inside activity is provided with interior protection shield 23, spout 24 has been seted up to department in the middle of the inner wall of interior protection shield 23, fixedly connected with mounting 25 on the inner wall on outer protection shield 21 top, swing joint has gyro wheel 26 between the inner wall of mounting 25, the cooperation is realized when lift platform body 1 extends the shrink, but protective housing 2 height-adjusting simultaneously, thereby reach the totally closed protection of inner structure, the whole security that has improved equipment when using, reduce the risk of occurence of failure, the protection staff.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a geological survey is with lift platform of built-in stable base, includes lift platform body (1) and protection casing (2), is provided with protection casing (2), its characterized in that on the outer wall of lift platform body (1): the lifting platform body (1) comprises a bottom plate (11), universal wheels (12), a placing groove (13), a stabilizing seat (14), a movable groove (15), an outer hinged frame (16), a connecting shaft (17), an inner hinged frame (18), a fixed block (19) and a top supporting plate (110), wherein the universal wheels (12) are fixedly connected with the four corners of the lower end of the bottom plate (11) respectively, the placing groove (13) is formed in the side walls of the four sides of the bottom plate (11), the stabilizing seat (14) is arranged inside the placing groove (13), the movable grooves (15) are symmetrically formed in the inner walls of the two sides of the bottom plate (11), the outer hinged frame (16) is movably connected between the inner walls of the two sides of the bottom plate (11), the connecting shaft (17) is arranged on the outer wall in the middle of the outer hinged frame (16) through bolts, the inner hinged frame (18) is movably connected with the other end of the connecting shaft (17), the fixed block (19) is fixedly connected with the upper end of one side of the bottom plate (11), the inner hinged support (18) is fixedly connected with the fixed block (19) through a bolt, and the top ends of the outer hinged support (16) and the inner hinged support (18) are fixedly connected with a top supporting plate (110);
protection casing (2) are including outer protection shield (21), flexible groove (22), interior protection shield (23), spout (24), mounting (25) and gyro wheel (26), flexible groove (22) have been seted up to the inside of outer protection shield (21), flexible groove (22) inside activity is provided with interior protection shield (23), spout (24) have been seted up to the inner wall middle department of interior protection shield (23), fixedly connected with mounting (25) on the inner wall on outer protection shield (21) top, swing joint has gyro wheel (26) between the inner wall of mounting (25).
2. The lift platform with built-in stabilizing base for geological survey according to claim 1, characterized in that: the stabilizing seat (14) comprises a movable block (141), a connecting hole (142), a fixed shaft (143), a damping shaft (144), a telescopic rod (145), a limiting block (146), an air cylinder (147), a base (148), an anti-slip pad (149) and a cushioning spring (1410), wherein the connecting hole (142) is formed in one end of the movable block (141), the fixed shaft (143) is fixedly connected between the inner walls of the other end of the movable block (141), the damping shaft (144) is movably sleeved on the outer wall of the fixed shaft (143), the telescopic rod (145) is fixedly connected on the side wall of the damping shaft (144), the limiting block (146) is fixedly connected on the outer wall of one end, close to the damping shaft (144), of the telescopic rod (145), the air cylinder (147) is movably sleeved on the other end of the telescopic rod (145), the base (148) is fixedly connected at the bottom end of the air cylinder (147), and the anti-slip pad (149) covers on the outer wall of the other end of the base (148), the outer walls of the telescopic rod (145) and the air cylinder (147) are sleeved with a cushioning spring (1410), and one end of the cushioning spring (1410) is fixedly connected with the non-slip mat (149).
3. The lift platform with built-in stabilizing base for geological survey according to claim 2, characterized in that: the diameter of the base (148) is smaller than the depth distance of the placing groove (13), and the length of the stabilizing seat (14) is smaller than the length of the placing groove (13).
4. The lift platform with built-in stabilizing base for geological survey according to claim 1, characterized in that: a movable shaft (161) is movably connected between the inner walls of the outer hinged frames (16), a pulley (162) is movably connected at one end of the movable shaft (161), a connecting plate (163) is fixedly connected between the inner walls at the bottom ends of the two outer hinged frames (16), a connecting piece (164) is arranged at the upper end of the connecting plate (163), and a hydraulic rod (165) is fixedly connected between the inner walls of the connecting piece (164).
5. The lift platform with built-in stabilizing base for geological survey according to claim 4, characterized in that: the hydraulic rods (165) are arranged in two groups, and the tail ends of the hydraulic rods (165) are fixedly connected to the outer wall of the inner hinge frame (18).
6. The lift platform with built-in stabilizing base for geological survey according to claim 1, characterized in that: the height of the outer protection plate (21) and the height of the inner protection plate (23) are equal to the maximum height of the lifting platform body (1) in extension, and the bottom end of the outer protection plate (21) and the top end of the inner protection plate (23) are fixedly connected to the upper end of the bottom plate (11) and the bottom end of the top support plate (110) respectively.
CN202022292313.2U 2020-10-15 2020-10-15 Lifting platform with built-in stabilizing base for geological survey Expired - Fee Related CN213738401U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022292313.2U CN213738401U (en) 2020-10-15 2020-10-15 Lifting platform with built-in stabilizing base for geological survey

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022292313.2U CN213738401U (en) 2020-10-15 2020-10-15 Lifting platform with built-in stabilizing base for geological survey

Publications (1)

Publication Number Publication Date
CN213738401U true CN213738401U (en) 2021-07-20

Family

ID=76849838

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022292313.2U Expired - Fee Related CN213738401U (en) 2020-10-15 2020-10-15 Lifting platform with built-in stabilizing base for geological survey

Country Status (1)

Country Link
CN (1) CN213738401U (en)

Similar Documents

Publication Publication Date Title
CN207209905U (en) A kind of liftable construction platform of assembled architecture
CN112938854A (en) High altitude cable maintenance auxiliary assembly
CN213738401U (en) Lifting platform with built-in stabilizing base for geological survey
CN209618784U (en) A kind of electronic communication automation lifting device
CN205998893U (en) A kind of vertical column type suspension crane
CN211899545U (en) Landscape curing means for garden design
CN111887563A (en) Case and bag skeleton
CN208632047U (en) Lifting device is used in a kind of maintenance of High-Pole Lamp
CN212656123U (en) Bridge engineering construction platform
CN213294570U (en) Machining platform convenient to lift
CN213979851U (en) Electric hanging basket for building outer wall construction
CN210001551U (en) windproof supporting device for communication engineering
CN218539219U (en) Hydraulic lifting platform with protection effect
CN206336995U (en) A kind of aerial work platform with shock-absorbing function
CN218815088U (en) Lifting device for building engineering
CN219136298U (en) Fixed double-layer operation platform
CN217173203U (en) Novel frame structure of aerial work vehicle
CN214462371U (en) High-altitude operation platform for construction of steel structure engineering
CN212387685U (en) Lifting platform for electric power
CN212101902U (en) Mobile lifting platform with anti-bumping function
CN215055095U (en) Scaffold frame convenient to remove for construction
CN215160679U (en) Lifting protection device for building installation engineering
CN213231458U (en) Movable lifting platform
CN218292693U (en) Portable scaffold of construction
CN213265649U (en) Material lifting device for building construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210720