Portable maintenance ladder
By introducing detachable screws and reinforcement mechanisms into the maintenance ladder, the problem of the overall inability to be disassembled and parts replaced by the maintenance ladder is solved, which improves portability and safety and reduces maintenance costs.
Patent Information
- Application Number
- CN202421017110.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing maintenance ladder cannot be disassembled as a whole, it is too large to carry, and it is impossible to replace damaged parts separately, resulting in high maintenance costs.
Detachable screw and central reinforcement mechanism are designed, and the integral reinforcement mechanism is inserted into the slot and locked through the screw. The damaged screw can be replaced separately, reducing the overall replacement cost, and improving the maintenance ladder through hinges, universal wheels and reinforcement mechanisms. Stability and connection strength.
It has achieved improved portability of maintenance ladders, reduced maintenance costs, and improved safety and stability during use.
Smart Images
Figure CN222253792U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of maintenance ladders, in particular to a portable maintenance ladder. Background Art
[0002] A maintenance ladder is a type of climbing tool used for maintenance and inspection work in spaces above a plane (such as a roof). It is widely used in various industries. During power maintenance work, especially when inspecting power poles and transmission lines, it is often necessary to use a power maintenance ladder for climbing work. Since power maintenance ladders are often used for outdoor work, they need to be carried frequently, and the height of the maintenance ladder needs to be adjusted according to the height of the different work sites.
[0003] After searching, a Chinese patent discloses a portable electric maintenance ladder (authorization announcement number CN218598143U), whose technical solution includes a mounting plate, a fixed platform and a positioning rod, a screw is rotatably installed inside the mounting plate, and a gear is symmetrically meshed on the outside of the screw, a connecting rod is fixedly connected to the surface of the gear, and an escalator is hinged on the end of the connecting rod away from the gear, and a U-shaped plate is fixedly connected to the lower surface of the mounting plate, and a fixed column is installed at the bottom of the U-shaped plate, and the fixed column is set to a hollow shape with openings at the upper and lower ends, and an adjusting column is slidably arranged inside the fixed column, a first positioning hole is opened on the surface of the fixed column, and a plurality of second positioning holes are opened on the surface of the adjusting column, and the positioning rod is movably arranged inside the first positioning hole and one of the second positioning holes. Although this patented technology is easy to receive, store and carry, and can adjust the height of the escalator according to the site conditions, the position of the adjusted electric maintenance ladder can be fixed.
[0004] However, the above device still has some shortcomings in actual use. The most obvious one is that the above maintenance ladder cannot be disassembled as a whole and is too large to be carried conveniently. In addition, if a part in the above maintenance ladder is damaged, it needs to be replaced as a whole, and the damaged part cannot be replaced individually, which makes the maintenance cost high. Utility Model Content
[0005] In view of the problems in the prior art: the above-mentioned maintenance ladder cannot be disassembled as a whole, is too large in size, and is not convenient to carry; and if a part in the above-mentioned maintenance ladder is damaged, it needs to be replaced as a whole, and the damaged part cannot be replaced individually, which makes the maintenance cost high. The main purpose of the utility model is to provide a portable maintenance ladder.
[0006] The technical solution of the utility model is as follows: a portable maintenance ladder comprises maintenance ladder bars, four of which are provided, and slots are equidistantly provided inside the maintenance ladder bars, a screw is inserted between two of the slots, both ends of the outer sides of the screw are threadedly connected with fixing nuts, and the fixing nuts are in conflict with the inner walls of the corresponding slots, a hinge is provided between the two maintenance ladder bars, and the two maintenance ladder bars are rotatably connected by the hinge, wherein the bottoms of the two maintenance ladder bars are rotatably connected with a bottom plate, and the bottoms of the bottom plates are provided with detachable universal wheels, a middle reinforcement mechanism is provided between the two maintenance ladder bars, and an overall reinforcement mechanism is provided inside the maintenance ladder bars.
[0007] By adopting the above technical solution, the screw is inserted between the two slots and locked with a fixing nut. The detachable design of the screw can replace the damaged screw individually, reducing the overall replacement cost. At the same time, it can reduce the overall volume of the maintenance ladder, greatly improving its portability.
[0008] As a preferred embodiment, the middle reinforcement mechanism includes a fixed groove opened inside the maintenance ladder, a U-shaped frame is arranged between the two fixed grooves, one end of the U-shaped frame is fixedly connected to the upper disc, and the other end of the U-shaped frame is fixedly connected to the lower disc, the two U-shaped frames are plugged into each other, and a second plug hole is opened inside the upper disc and the lower disc.
[0009] By adopting the above technical solution, the two U-shaped frames are respectively inserted into the corresponding fixing grooves, and the two U-shaped frames are staggered with each other, so that the two upper discs and the two lower discs fit together, and the stability between the two vertical maintenance ladders can be improved by inserting rods.
[0010] As a preferred embodiment, the integral reinforcement mechanism includes first sockets each opened inside the maintenance ladder bar, plug rods are inserted into the first sockets, the plug rods are snap-connected with the second sockets, third sockets are opened at both ends of the screw rod, and the plug rods are snap-connected with the third sockets.
[0011] By adopting the above technical solution, the insertion rod will be inserted into the third insertion hole and the second insertion hole successively, thereby improving the overall connection strength inside the maintenance ladder.
[0012] As a preferred embodiment, an anti-slip ring is sleeved on the outer side of the screw rod and between the two maintenance ladder bars.
[0013] By adopting the above technical solution, the workers can be more stable during the climbing process.
[0014] As a preferred implementation, the bottom end of the bottom plate is fixedly connected with a rubber anti-slip layer.
[0015] By adopting the above technical solution, the stability of the bottom of the base plate can be improved.
[0016] As a preferred implementation, mounting holes are provided at both ends of the bottom plate.
[0017] By adopting the above technical solution, the base plate can be fixedly installed on the ground.
[0018] Compared with the prior art, the advantages and positive effects of the utility model are:
[0019] In the utility model, when the maintenance ladder needs to be installed, the screw can be inserted between the two slots and the screw can be locked with a fixing nut. The detachable design of the screw can replace the damaged screw individually, reducing the cost of overall replacement. At the same time, the overall volume of the maintenance ladder can be reduced, which greatly improves its portability. Through the provision of the middle reinforcement mechanism, the connection strength between the two vertical maintenance ladder bars can be strengthened to avoid breakage in the middle of the maintenance ladder. Through the provision of the overall reinforcement mechanism, the overall connection strength inside the maintenance ladder can be strengthened, further improving the safety and stability of the maintenance ladder when in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is an overall three-dimensional diagram of the utility model;
[0021] Figure 2 This is the overall folding diagram of the utility model;
[0022] Figure 3 This is a schematic diagram of the U-shaped frame structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the screw structure of the utility model;
[0024] Figure 5 For this utility model Figure 1 Enlarged view of point A in the middle.
[0025] Legend: 1. Base plate; 2. Mounting hole; 3. Inspection ladder; 4. Slot; 5. Screw; 6. Fixing nut; 7. Anti-slip ring; 8. Removable universal wheel; 9. Hinge; 10. First socket; 11. Insert rod; 12. U-shaped frame; 13. Upper disc; 14. Lower disc; 15. Second socket; 16. Third socket; 17. Fixing slot. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0027] Reference Figure 1-5 A portable maintenance ladder comprises a maintenance ladder bar 3, four maintenance ladder bars 3 are provided, and slots 4 are equidistantly provided inside the maintenance ladder bar 3, a screw rod 5 is inserted between the two slots 4, and both ends of the outer side of the screw rod 5 are threadedly connected with fixing nuts 6, and the fixing nuts 6 are in conflict with the inner walls of the corresponding slots 4, a hinge 9 is provided between the two maintenance ladder bars 3, and the two maintenance ladder bars 3 are rotatably connected through the hinge 9, wherein the bottoms of the two maintenance ladder bars 3 are rotatably connected with a bottom plate 1, and the bottoms of the bottom plates 1 are provided with detachable universal wheels 8, a middle reinforcement mechanism is provided between the two maintenance ladder bars 3, and an overall reinforcement mechanism is provided inside the maintenance ladder bar 3.
[0028] When the maintenance ladder needs to be installed, the screw rod 5 can be inserted between the two slots 4 and the screw rod 5 can be locked with the fixing nut 6. The detachable design of the screw rod 5 allows the damaged screw rod 5 to be replaced individually, reducing the cost of the overall replacement. At the same time, the overall volume of the maintenance ladder can be reduced, which greatly improves its portability. Through the setting of the middle reinforcement mechanism, the connection strength between the two vertical maintenance ladder bars 3 can be strengthened to avoid breakage in the middle of the maintenance ladder. Through the setting of the overall reinforcement mechanism, the overall connection strength inside the maintenance ladder can be strengthened, further improving the safety and stability of the maintenance ladder during use.
[0029] Reference Figure 3 The middle reinforcement mechanism includes a fixed groove 17 opened inside the maintenance ladder 3, a U-shaped frame 12 is arranged between the two fixed grooves 17, one end of the U-shaped frame 12 is fixedly connected to the upper disc 13, and the other end of the U-shaped frame 12 is fixedly connected to the lower disc 14. The two U-shaped frames 12 are plugged into each other, and a second plug hole 15 is opened inside the upper disc 13 and the lower disc 14.
[0030] When in use, the two U-shaped frames 12 can be inserted into the corresponding fixing grooves 17 respectively, and the two U-shaped frames 12 are staggered with each other so that the two upper discs 13 and the two lower discs 14 fit together, and the stability between the two vertical maintenance ladder bars 3 can be improved by inserting the rod 11.
[0031] Reference Figure 1The overall reinforcement mechanism includes first insertion holes 10 opened inside the maintenance ladder 3, and the first insertion holes 10 are inserted with insertion rods 11, and the insertion rods 11 are clamped with the second insertion holes 15. Third insertion holes 16 are opened at both ends of the screw rod 5, and the insertion rods 11 are clamped with the third insertion holes 16.
[0032] When in use, the four rods 11 can be inserted into the corresponding first holes 10 respectively, and then the rods 11 will be successively inserted into the third hole 16 and the second hole 15, so as to improve the overall connection strength inside the maintenance ladder.
[0033] Reference Figure 4 An anti-skid ring 7 is provided on the outer side of the screw rod 5 and between the two maintenance ladder bars 3 to increase the friction coefficient between the soles of the staff and the screw rod 5, so that the staff is more stable during the climbing process.
[0034] Reference Figure 2 The bottom end of the bottom plate 1 is fixedly connected with a rubber anti-skid layer to improve the stability of the bottom of the bottom plate 1.
[0035] Reference Figure 1 Both ends of the bottom plate 1 are provided with mounting holes 2 to facilitate fixing the bottom plate 1 on the ground.
[0036] Working principle: First, when the maintenance ladder needs to be installed, the screw rod 5 can be inserted between the two card slots 4 and the screw rod 5 can be locked with the fixing nut 6. The detachable design of the screw rod 5 can replace the damaged screw rod 5 separately, reducing the cost of the overall replacement. At the same time, it can reduce the overall volume of the maintenance ladder, which greatly improves its portability. Then, the two U-shaped frames 12 are respectively inserted into the corresponding fixing grooves 17. The two U-shaped frames 12 are staggered with each other so that the two upper discs 13 and the two lower discs 14 fit together. The insertion rod 11 can strengthen the connection strength between the two vertical maintenance ladder bars 3 to avoid the occurrence of breakage in the middle of the maintenance ladder. The four insertion rods 11 are respectively inserted into the corresponding first sockets 10, and then the insertion rods 11 will be successively inserted into the third socket 16 and the second socket 15, thereby improving the overall connection strength inside the maintenance ladder, and further improving the safety and stability of the maintenance ladder when in use.
[0037] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A portable maintenance ladder, comprising a maintenance ladder bar (3), characterized in that: The maintenance ladder bars (3) are provided with four, and the interior of the maintenance ladder bars (3) is provided with slots (4) at equal intervals. A screw rod (5) is inserted between two of the slots (4). Both ends of the outer side of the screw rod (5) are threadedly connected with fixing nuts (6), and the fixing nuts (6) are in contact with the inner walls of the corresponding slots (4). A hinge (9) is provided between the two maintenance ladder bars (3). The two maintenance ladder bars (3) are rotatably connected through the hinge (9), wherein the bottoms of the two maintenance ladder bars (3) are rotatably connected with a base plate (1), and the bottoms of the base plate (1) are provided with detachable universal wheels (8). A middle reinforcement mechanism is provided between the two maintenance ladder bars (3), and an integral reinforcement mechanism is provided inside the maintenance ladder bars (3).
2. A portable maintenance ladder according to claim 1, characterized in that: The middle reinforcement mechanism comprises a fixing groove (17) provided inside the maintenance ladder bar (3); a U-shaped frame (12) is provided between two fixing grooves (17); one end of the U-shaped frame (12) is fixedly connected to an upper disc (13); the other end of the U-shaped frame (12) is fixedly connected to a lower disc (14); the two U-shaped frames (12) are plugged into each other; and a second plug hole (15) is provided inside each of the upper disc (13) and the lower disc (14).
3. A portable maintenance ladder according to claim 1, characterized in that: The integral reinforcement mechanism comprises first insertion holes (10) each opened inside the maintenance ladder bar (3), an insertion rod (11) is inserted into the inside of the first insertion hole (10), and the insertion rod (11) is clamped with the second insertion hole (15), and third insertion holes (16) are opened at both ends inside the screw rod (5), and the insertion rod (11) is clamped with the third insertion hole (16).
4. A portable maintenance ladder according to claim 1, characterized in that: An anti-slip ring (7) is sleeved on the outer side of the screw rod (5) and between the two maintenance ladder bars (3).
5. A portable maintenance ladder according to claim 1, characterized in that: The bottom end of the bottom plate (1) is fixedly connected with a rubber anti-slip layer.
6. A portable maintenance ladder according to claim 1, characterized in that: Both ends of the bottom plate (1) are provided with mounting holes (2).