Adjustable structure for inclined vertical ladder of tower body section of tower crane

Abstract

The utility model discloses a tower crane tower body section inclined vertical ladder stand adjustable structure which comprises a tower body section, a rest platform, a ladder stand and a handrail. The upper end of the crawling ladder is connected to a top transverse web member of the tower body section, the rest platform comprises a platform body arranged at the bottom of the tower body section, a second lug plate and a third lug plate, the second lug plate and the third lug plate are arranged on the platform body, and the third lug plate is located on one side of the second lug plate; the crawling ladder has a first state and a second state, in the first state, one end of the crawling ladder is connected to the top transverse web member, the other end of the crawling ladder is connected to the second lug plate, and the crawling ladder is vertically arranged; in the second state, one end of the crawling ladder is connected to the top transverse web member, the other end of the crawling ladder is connected to the third lug plate, the crawling ladder is obliquely arranged, and conversion between a vertical crawling ladder and an inclined crawling ladder can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, in particular to an adjustable structure of inclined and vertical ladders for tower crane tower sections. Background Art

[0002] The tower crane is equipped with ladders in the tower section for people to climb up and down, which include straight ladders and inclined ladders. At present, the traditional tower crane tower section can only realize the installation of inclined and straight ladders in a single state. However, tower cranes need to use different types of ladders under different usage requirements. The existing tower body cannot install inclined and straight ladders without changing the original internal structure, so it is difficult to meet the different usage requirements of tower cranes. This results in the tower section for installing inclined ladders and straight ladders cannot be used interchangeably. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an adjustable structure of an inclined and straight ladder of a tower crane tower section, which realizes the conversion between a straight ladder and an inclined ladder.

[0004] The utility model adopts the following technical solutions:

[0005] A tower crane tower section inclined vertical ladder adjustable structure, comprising a tower section, a rest platform, a ladder, and a handrail; the upper end of the ladder is connected to the top transverse web of the tower section, the rest platform comprises a platform arranged at the bottom of the tower section and a second ear plate and a third ear plate arranged on the platform, the third ear plate is located on one side of the second ear plate; the ladder has a first state and a second state, in the first state, one end of the ladder is connected to the top transverse web, and the other end is connected to the second ear plate, and the ladder is vertically arranged; in the second state, one end of the ladder is connected to the top transverse web, and the other end is connected to the third ear plate, and the ladder is inclined.

[0006] Preferably, the second ear plate is in an inverted "L" shape, and its ear plate hole is located below the horizontal line where the ear plate hole of the third ear plate is located.

[0007] Preferably, the top transverse web member comprises a transverse web member and a first ear plate.

[0008] Preferably, a distance L1 between the ear plate hole of the first ear plate and the ear plate hole of the second ear plate is equal to a distance L2 between the ear plate hole of the first ear plate and the ear plate hole of the third ear plate.

[0009] Preferably, the ladder further comprises a guard ring, which is arranged in the middle of the ladder.

[0010] Preferably, railing sleeves are provided on the four sides of the rest platform, and the railings are connected to the railing sleeves.

[0011] Compared with the prior art, the utility model has the following advantages: the utility model provides an adjustable structure of an inclined and straight ladder for a tower crane tower section, comprising a tower section, a rest platform, a ladder, and a railing. The ladder has a first state and a second state. In the first state, one end of the ladder is connected to the top transverse web, and the other end is connected to the second ear plate, and the ladder is vertically arranged; in the second state, one end of the ladder is connected to the top transverse web, and the other end is connected to the third ear plate, and the ladder is inclined, which can realize the conversion between a straight ladder and an inclined ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the main view of the tower section in the inclined ladder state described in the utility model;

[0013] Figure 2 It is a top view of the tower body in the straight climbing state described in the utility model;

[0014] Figure 3 It is a structural schematic diagram of the top transverse web;

[0015] Figure 4 This is a front view of a tower section in the straight climbing state described in the utility model;

[0016] Figure 5 for Figure 4 A partial enlarged view of part A.

[0017] Figure 6 is a schematic diagram of the structure of the second ear plate;

[0018] Figure 7 is a schematic diagram of the structure of the third ear plate;

[0019] In the figure, the tower section body 1; the rest platform 2; the ladder 3; the railing 4; the top transverse web 11; the transverse web 110; the first ear plate 111; the fifth ear plate 12; the platform 21; the second ear plate 22; the third ear plate 23; the fourth ear plate 24; the railing sleeve 25; and the retaining ring 31. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, a tower crane tower section inclined and vertical ladder adjustable structure comprises a tower section 1, a rest platform 2, a ladder 3, and a handrail 4;

[0023] like Figure 3As shown, the tower section 1 includes a top transverse web member 11 , and the top transverse web member 11 includes a transverse web member 110 and a first ear plate 111 . The first ear plate 111 is located on the transverse web member 110 .

[0024] like Figure 4-7 As shown, the rest platform 2 includes a platform 21 arranged at the bottom of the tower section 1 and a second ear plate 22 and a third ear plate 23 arranged on the platform 21, the third ear plate 23 is located on one side of the second ear plate 22, and the distance L1 between the ear plate hole of the first ear plate 111 and the ear plate hole of the second ear plate 22 is equal to the distance L2 between the ear plate hole of the first ear plate 111 and the ear plate hole of the third ear plate 23.

[0025] The upper end of the ladder 3 is connected to the top transverse web 11 of the tower section 1;

[0026] The ladder 3 has a first state and a second state. In the first state, one end of the ladder 3 is connected to the top transverse rod 11, and the other end is connected to the second ear plate 22, and the ladder 3 is vertically arranged; in the second state, one end of the ladder 3 is connected to the top transverse rod 11, and the other end is connected to the third ear plate 23, and the ladder 3 is inclined, which can realize the conversion between a straight ladder and an inclined ladder.

[0027] As an embodiment, the upper end of the ladder 3 is connected to the ear plate hole of the first ear plate 111 by bolts. In the first state, the lower end of the ladder 3 is connected to the ear plate hole of the second ear plate 22 by bolts; in the second state, the lower end of the ladder 3 is connected to the ear plate hole of the third ear plate 23 by bolts.

[0028] like Figure 6 As shown, the second ear plate 22 is in an inverted "L" shape, and its ear plate hole is located below the horizontal line of the ear plate hole of the third ear plate 23, so that the distance L1 between the ear plate hole of the first ear plate 111 and the ear plate hole of the second ear plate 22 is equal to the distance L2 between the ear plate hole of the first ear plate 111 and the ear plate hole of the third ear plate 23.

[0029] In addition, the ear plate hole of the second ear plate 22 is located directly below the ear plate hole of the first ear plate 111, so that in the first state, the ladder 3 can be arranged vertically.

[0030] When in use, the operator connects the upper part of the ladder 3 to the first ear plate 111 with bolts. If a straight ladder is required, the lower part of the ladder 3 is connected to the second ear plate 22 with bolts; if an inclined ladder is required, the lower part of the ladder 3 is connected to the third ear plate 23 with bolts.

[0031] The ladder 3 further includes a guard ring 31, which is arranged in the middle of the ladder 3 to prevent climbers from falling.

[0032] like Figure 2As shown, the rest platform 2 further includes a fourth ear plate 24, which is welded to the four corners of the platform 21, and a fifth ear plate 12 is welded to the bottom of the four main chords of the tower section 1, and the two are connected by bolts.

[0033] The rest platform 2 is provided with railing sleeves 25 on four sides, and the railings 4 are connected to the railing sleeves 25 .

[0034] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A tower crane tower section inclined and vertical ladder adjustable structure, characterized in that: The tower comprises a tower section (1), a rest platform (2), a ladder (3), and a handrail (4); the upper end of the ladder (3) is connected to the top transverse web (11) of the tower section (1); the rest platform (2) comprises a platform (21) arranged at the bottom of the tower section (1) and a second ear plate (22) and a third ear plate (23) arranged on the platform (21); the third ear plate (23) is located on one side of the second ear plate (22); the ladder (3) has a first state and a second state; in the first state, one end of the ladder (3) is connected to the top transverse web (11) and the other end is connected to the second ear plate (22), and the ladder (3) is arranged vertically; in the second state, one end of the ladder (3) is connected to the top transverse web (11) and the other end is connected to the third ear plate (23), and the ladder (3) is arranged inclined.

2. The adjustable structure of the vertical and oblique ladder of a tower crane tower section according to claim 1 is characterized in that: The second ear plate (22) is in an inverted "L" shape, and its ear plate hole is located below the horizontal line where the ear plate hole of the third ear plate (23) is located.

3. The adjustable structure of the vertical and oblique ladder of a tower crane tower section according to claim 1 is characterized in that: The top transverse web member (11) comprises a transverse web member (110) and a first ear plate (111).

4. The adjustable structure of the vertical and oblique ladder of a tower crane body section according to claim 3 is characterized in that: The distance L1 between the ear plate hole of the first ear plate (111) and the ear plate hole of the second ear plate (22) is equal to the distance L2 between the ear plate hole of the first ear plate (111) and the ear plate hole of the third ear plate (23).

5. The adjustable structure of the vertical and oblique ladder of a tower crane body section according to claim 1 is characterized in that: The ladder (3) further comprises a guard ring (31), and the guard ring (31) is arranged in the middle of the ladder (3).

6. The adjustable structure of the vertical and oblique ladder of a tower crane tower section according to claim 1 is characterized in that: The rest platform (2) is provided with railing sleeves (25) on four sides, and the railing (4) is connected to the railing sleeves (25).

Images