CN222253791U

CN222253791U - Stable type crawling ladder for lead screw overhaul

Info

Publication number: CN222253791U
Application number: CN202421009596.7U
Authority: CN
Inventors: 刘萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2024-05-10
Filing date: 2024-05-10
Publication date: 2024-12-27
Anticipated expiration: 2034-05-10

Abstract

The utility model provides a stable type cat ladder for lead screw overhaul, which comprises a cat ladder component and an expansion mechanism, wherein the cat ladder component comprises a base, two vertical rods and a plurality of cross rods; the two vertical rods are arranged above the base, the cross bars are fixedly connected between the two vertical rods, the expansion mechanism is arranged inside the base, the top of each vertical rod is provided with an anti-slip mechanism, and a supporting mechanism is arranged between the anti-slip mechanism and the cross bars; the utility model discloses an utilize extending mechanism to prolong the both sides of base for improve the stability of cat ladder bottom, then drive anti-skidding mechanism and lead screw surface through removing the pole setting and carry out the block, and utilize supporting mechanism to make anti-skidding mechanism and lead screw fully laminate, so that utilize anti-skidding mechanism to carry out spacingly to the top of cat ladder, guaranteed the stability of climbing in-process, and reduced the space that exists between ladder and the lead screw, reduced the maintenance degree of difficulty and safety risk.

Description

Stable type crawling ladder for lead screw overhaul

Technical Field

The utility model relates to a stable type cat ladder, in particular to a stable type cat ladder for screw overhaul, and belongs to the technical field of cat ladders.

Background

Screw overhaul is one of important overhaul projects in hydraulic engineering, and is mainly aimed at screws on large-scale hydraulic mechanical equipment, such as a headstock gear of a hydropower station and screws in a gate control system. The maintenance content mainly comprises the appearance, the abrasion condition, the connection fastening state, the measurement of key dimensions such as pitch, diameter and the like of the screw rod and the nut pair, the cleaning of dirt on the surface of the screw rod, the necessary lubrication treatment and the like.

When carrying out daily maintenance, traditional lead screw is because the lead screw diameter is usually relatively thin, and the surface coating has a large amount of lubricating oil, thereby lead to traditional cat ladder not be suitable for the climbing work that the lead screw was overhauld, in order to guarantee the stability of climbing in-process, usually use double ladder or vertical elevator, however double ladder or vertical elevator are when using, because the lead screw is located the middle part of equipment generally, can have great space between leading to double ladder or vertical elevator and the lead screw, the maintenance degree of difficulty has been increased, and there is the security risk, for this reason, a stable cat ladder is overhauld with the lead screw is proposed.

Disclosure of utility model

In view of the above, the utility model provides a stable ladder stand for screw rod maintenance, which solves or alleviates the technical problems existing in the prior art, and at least provides a beneficial choice.

The technical scheme of the embodiment of the utility model is realized in such a way that the stable type cat ladder for screw overhaul comprises a cat ladder component and an expansion mechanism, wherein the cat ladder component comprises a base, two vertical rods and a plurality of cross rods;

The two vertical rods are arranged above the base, the cross bars are fixedly connected between the two vertical rods, the expansion mechanism is arranged inside the base, the top of each vertical rod is provided with an anti-slip mechanism, and a supporting mechanism is arranged between the anti-slip mechanism and the cross bars;

The expansion mechanism is used for extending the two sides of the base, so that the overall stability of the ladder is improved;

the anti-skid mechanism is used for being clamped with the screw rod to limit the top of the crawling ladder;

The support mechanism is used for providing support for the bottom of the anti-skid mechanism, so that the anti-skid mechanism is fully attached to the screw rod.

Further preferably, the expansion mechanism comprises a knob, a first screw rod, a second screw rod, two expansion brackets, four bases and a chute;

The sliding groove is formed in the inner side wall of the base, the two expansion frames are slidably connected to the inner portion of the sliding groove, and the four bases are fixedly connected to the bottoms of the two expansion frames respectively.

Further preferably, the first screw rod and the second screw rod are both rotatably connected to the inner side wall of the base, one ends of the first screw rod and the second screw rod, which are adjacent, are fixedly connected, the outer side walls of the first screw rod and the second screw rod are respectively in threaded connection with the inner side walls of the two expansion brackets, and the knob is fixedly connected to one end of the first screw rod.

Further preferably, the anti-skid mechanism comprises two connecting seats, a connecting shaft, two hoops, two connecting plates, a V-shaped plate and a plurality of raised strips;

The connecting seats are respectively arranged at the tops of one sides of the two vertical rods, the clamping hoops are respectively sleeved at the tops of the outer side walls of the two vertical rods, the clamping hoops are respectively connected to one sides of the two connecting seats through bolts and threads, and the connecting shafts are fixedly connected to the other sides of the two connecting seats.

Further preferably, the two connecting plates are fixedly connected to one side of the V-shaped plate, the convex strips are fixedly connected to the other side of the V-shaped plate, and the inner side walls of the two connecting plates are rotatably connected with the outer side wall of the connecting shaft through bearings.

Further preferably, the support mechanism comprises a piston sleeve, a piston rod, a spring and a connecting ring;

The piston comprises a cross rod, a piston sleeve, a connecting ring, a spring, a connecting ring and a connecting ring, wherein one end of the piston sleeve is rotatably connected to the outer side wall of the cross rod through a bearing, the outer side wall of the piston rod is slidably connected to the inner side wall of the piston sleeve, the connecting ring is hinged to the bottom of the inner side wall of the V-shaped plate, one end of the piston rod is fixedly connected to the outer side wall of the connecting ring, and the spring is fixedly connected between the piston rod and the bottom of the inner side wall of the piston sleeve.

Further preferably, the upper surface of the base is symmetrically and fixedly connected with two connecting pieces, the bottoms of the two vertical rods are fixedly connected with two connecting blocks, and the two connecting blocks are respectively hinged to the inner side walls of the two connecting pieces.

By adopting the technical scheme, the climbing device has the advantages that the two sides of the base are prolonged by the aid of the expansion mechanism, so that the stability of the bottom of the ladder is improved, the anti-slip mechanism is driven to be clamped with the surface of the screw rod by moving the vertical rod, the anti-slip mechanism is fully attached to the screw rod by the aid of the supporting mechanism, the top of the ladder is limited by the aid of the anti-slip mechanism, stability in a climbing process is guaranteed, space between the ladder and the screw rod is reduced, and overhaul difficulty and safety risk are reduced.

The foregoing summary is provided merely for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present utility model will become apparent by reference to the drawings and the following detailed description.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a block diagram of the present utility model;

FIG. 2 is a schematic view of a semi-sectional structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of a base of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of the area A of FIG. 2 according to the present utility model;

Fig. 5 is a schematic side view of the present utility model.

Reference numerals are 1, a ladder assembly, 2, an expanding mechanism, 3, an anti-skid mechanism, 4, a supporting mechanism, 101, a base, 102, a vertical rod, 103, a cross rod, 201, a knob, 202, a first screw rod, 203, a second screw rod, 204, an expanding frame, 205, a base, 206, a chute, 301, a connecting seat, 302, a connecting shaft, 303, a clamp, 304, a connecting plate, 305, a V-shaped plate, 306, a convex strip, 401, a piston sleeve, 402, a piston rod, 403, a spring, 404, a connecting ring, 51, a connecting piece, 52 and a connecting block.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

It should be noted that the terms "first," "second," "symmetric," "array," and the like are used merely for distinguishing between description and location descriptions, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of features indicated. Thus, a feature defining a "first", "symmetry", etc., may explicitly or implicitly include one or more such feature, and as such, where some feature is not literally limited to "two", "three", etc., it should be noted that the feature likewise explicitly or implicitly includes one or more feature quantities.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1-5, the embodiment of the utility model provides a stable ladder for screw rod overhaul, which comprises a ladder assembly 1 and an expansion mechanism 2, wherein the ladder assembly 1 comprises a base 101, two vertical rods 102 and a plurality of cross rods 103;

Wherein, two vertical rods 102 are all arranged above the base 101, a plurality of cross rods 103 are all fixedly connected between the two vertical rods 102, an expanding mechanism 2 is arranged inside the base 101, an anti-slip mechanism 3 is arranged at the top of the vertical rods 102, and a supporting mechanism 4 is arranged between the anti-slip mechanism 3 and the cross rods 103;

The expansion mechanism 2 is used for extending two sides of the base 101, so that the overall stability of the ladder is improved;

the anti-skid mechanism 3 is used for being clamped with the screw rod to limit the top of the crawling ladder;

Wherein, the supporting mechanism 4 is used for providing support for the bottom of the anti-skid mechanism 3, so that the anti-skid mechanism is fully attached to the screw rod.

In one embodiment, the expansion mechanism 2 comprises a knob 201, a first screw 202, a second screw 203, two expansion brackets 204, four bases 205 and a chute 206;

The sliding groove 206 is formed in the inner side wall of the base 101, the two expansion brackets 204 are all connected in the sliding groove 206 in a sliding manner, the four bases 205 are respectively and fixedly connected to the bottoms of the two expansion brackets 204, the first screw rod 202 and the second screw rod 203 are all connected to the inner side wall of the base 101 in a rotating manner, one ends of the first screw rod 202 and the second screw rod 203 adjacent to each other are fixedly connected, the outer side walls of the first screw rod 202 and the second screw rod 203 are respectively connected with the inner side walls of the two expansion brackets 204 in a threaded manner, and the knob 201 is fixedly connected to one end of the first screw rod 202;

The first screw rod 202 and the second screw rod 203 are driven to rotate by rotating the knob 201, and the two expansion brackets 204 and the four bases 205 are respectively pushed out of the base 101 by the rotating first screw rod 202 and the rotating second screw rod 203 through threads, so that two sides of the base 101 are prolonged by the expansion brackets 204 and the bases 205.

In one embodiment, the anti-skid mechanism 3 comprises two connection seats 301, a connection shaft 302, two clamps 303, two connection plates 304, a V-shaped plate 305 and a plurality of raised strips 306;

The two connecting seats 301 are respectively arranged at the top of one side of the two vertical rods 102, the two hoops 303 are respectively sleeved at the top of the outer side wall of the two vertical rods 102, the two hoops 303 are respectively connected to one side of the two connecting seats 301 through bolt threads, the connecting shaft 302 is fixedly connected to the other side of the two connecting seats 301, the two connecting plates 304 are fixedly connected to one side of the V-shaped plate 305, the plurality of raised strips 306 are fixedly connected to the other side of the V-shaped plate 305, and the inner side walls of the two connecting plates 304 are rotationally connected with the outer side wall of the connecting shaft 302 through bearings;

The V-shaped plate 305 is rotatable about the connecting shaft 302 by means of the connecting plate 304, and the connecting base 301 is fixed to the outer side wall of the upright 102 by means of the clips 303.

In one embodiment, the support mechanism 4 comprises a piston sleeve 401, a piston rod 402, a spring 403 and a connecting ring 404;

One end of the piston sleeve 401 is rotatably connected to the outer side wall of one cross rod 103 through a bearing, the outer side wall of the piston rod 402 is slidably connected to the inner side wall of the piston sleeve 401, the connecting ring 404 is hinged to the bottom of the inner side wall of the V-shaped plate 305, one end of the piston rod 402 is fixedly connected to the outer side wall of the connecting ring 404, and the spring 403 is fixedly connected between the piston rod 402 and the bottom of the inner side wall of the piston sleeve 401;

The movable upright 102 utilizes the piston sleeve 401 and the piston rod 402 to lead the bottom of the V-shaped plate 305 to be in contact with the surface of the screw rod, and the piston sleeve 401 is matched with the piston rod 402 to limit the whole inclination angle of the V-shaped plate 305.

In one embodiment, two connecting pieces 51 are symmetrically and fixedly connected to the upper surface of the base 101, two connecting blocks 52 are fixedly connected to the bottoms of the two vertical rods 102, and the two connecting blocks 52 are respectively hinged to the inner side walls of the two connecting pieces 51;

through the connection blocks 52 and the connection members 51 provided so as to fold or unfold between the base 101 and the upright 102.

When the utility model works, the crawling ladder is placed at a designated position, and then the first screw rod 202 and the second screw rod 203 are driven to rotate by rotating the knob 201, and the rotating first screw rod 202 and the rotating second screw rod 203 respectively push out two expansion frames 204 and four bases 205 from the base 101 by utilizing threads, so that the expansion frames 204 and the bases 205 are used for prolonging the two sides of the base 101, and the rollover prevention performance and the bottom stability of the crawling ladder are improved.

After the expansion frame 204 is adjusted, the bottom of the V-shaped plate 305 is firstly contacted with the surface of the screw rod by moving the vertical rod 102 through the piston sleeve 401 and the piston rod 402, then the piston rod 402 is driven to move by the pressure V-shaped plate 305, the moving piston rod 402 drives the spring 403 to compress so that the V-shaped plate 305 can be fully attached to the surface of the screw rod, the piston sleeve 401 is matched with the piston rod 402 to limit the whole inclination angle of the V-shaped plate 305, and then the arranged raised strips 306 are clamped into threads on the surface of the screw rod so as to clamp the V-shaped plate 305 and the screw rod, so that the climbing ladder is prevented from sliding down in the climbing process, and the placement operation of the climbing ladder is completed.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various modifications and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The stable type crawling ladder for screw rod overhaul comprises a crawling ladder assembly (1) and an expansion mechanism (2), and is characterized in that the crawling ladder assembly (1) comprises a base (101), two vertical rods (102) and a plurality of cross rods (103);

The two vertical rods (102) are arranged above the base (101), a plurality of transverse rods (103) are fixedly connected between the two vertical rods (102), the expansion mechanism (2) is arranged inside the base (101), the top of each vertical rod (102) is provided with an anti-slip mechanism (3), and a supporting mechanism (4) is arranged between each anti-slip mechanism (3) and each transverse rod (103);

The expansion mechanism (2) is used for extending the two sides of the base (101) to increase the overall stability of the ladder;

The anti-skid mechanism (3) is used for being clamped with the screw rod to limit the top of the crawling ladder;

The support mechanism (4) is used for providing support for the bottom of the anti-skid mechanism (3) so that the anti-skid mechanism is fully attached to the screw rod.

2. The stable ladder stand for screw rod overhaul according to claim 1, wherein the expansion mechanism (2) comprises a knob (201), a first screw rod (202), a second screw rod (203), two expansion brackets (204), four bases (205) and a chute (206);

The sliding groove (206) is formed in the inner side wall of the base (101), two expansion frames (204) are both connected to the inside of the sliding groove (206) in a sliding mode, and four bases (205) are respectively and fixedly connected to the bottoms of the two expansion frames (204).

3. The stabilized type crawling ladder for screw rod overhaul as claimed in claim 2, wherein the first screw rod (202) and the second screw rod (203) are both rotatably connected to the inner side wall of the base (101), one ends of the first screw rod (202) and the second screw rod (203) adjacent to each other are fixedly connected, the outer side walls of the first screw rod (202) and the second screw rod (203) are respectively in threaded connection with the inner side walls of the two expansion frames (204), and the knob (201) is fixedly connected to one end of the first screw rod (202).

4. The stable ladder stand for screw rod overhaul according to claim 1, wherein the anti-skid mechanism (3) comprises two connecting seats (301), a connecting shaft (302), two hoops (303), two connecting plates (304), a V-shaped plate (305) and a plurality of raised strips (306);

The two connecting seats (301) are respectively arranged at the top of one side of each upright (102), the two clamping hoops (303) are respectively sleeved at the top of the outer side wall of each upright (102), the two clamping hoops (303) are respectively connected to one side of each connecting seat (301) through bolts in a threaded mode, and the connecting shaft (302) is fixedly connected to the other side of each connecting seat (301).

5. The stable ladder stand for lead screw overhaul as claimed in claim 4, wherein the two connecting plates (304) are fixedly connected to one side of the V-shaped plate (305), the plurality of raised strips (306) are fixedly connected to the other side of the V-shaped plate (305), and the inner side walls of the two connecting plates (304) are rotatably connected with the outer side wall of the connecting shaft (302) through bearings.

6. The stable ladder stand for screw rod maintenance according to claim 4, wherein the supporting mechanism (4) comprises a piston sleeve (401), a piston rod (402), a spring (403) and a connecting ring (404);

One end of the piston sleeve (401) is rotatably connected to the outer side wall of the cross rod (103) through a bearing, the outer side wall of the piston rod (402) is slidably connected to the inner side wall of the piston sleeve (401), the connecting ring (404) is hinged to the bottom of the inner side wall of the V-shaped plate (305), one end of the piston rod (402) is fixedly connected to the outer side wall of the connecting ring (404), and the spring (403) is fixedly connected between the piston rod (402) and the bottom of the inner side wall of the piston sleeve (401).

7. The stable ladder stand for screw rod overhaul as claimed in claim 1, wherein the upper surface of the base (101) is symmetrically and fixedly connected with two connecting pieces (51), the bottoms of the two vertical rods (102) are fixedly connected with two connecting blocks (52), and the two connecting blocks (52) are respectively hinged to the inner side walls of the two connecting pieces (51).