A fixed structure of tower crane standard section

Abstract

The present invention discloses a fixing structure of a tower crane standard section, including a connecting pipe, a clamping mechanism, and a limiting mechanism. Four connecting pipes are placed vertically in parallel, and a cross bar is provided between the ends of two adjacent connecting pipes. Both ends of each cross bar are fixedly connected to the ends of the corresponding connecting pipes. The two adjacent connecting pipes are clamped and connected, and both ends of each connecting pipe are provided with a limiting mechanism. The present invention solves the problems of inconvenient splicing and poor stability of standard sections through the coordinated use of various mechanisms, and the overall structural design is compact. The convenience of splicing standard sections is increased through multiple splicing and fixing methods, and the stability of the standard sections after splicing is further increased.

Description

Technical Field

[0001] The invention relates to the technical field of tower crane standard sections, in particular to a fixing structure of a tower crane standard section. Background Art

[0002] A tower crane is a type of lifting equipment used in construction. Many people do not understand how the tower crane itself rises. In fact, it is very simple. The tower crane has a lifting frame. When lifting, the frame first rises upward. After rising, it is higher than the tower body. There will be a space between the tower body and the frame. At this time, the standard section of the tower body is installed in this space. The frame is raised again, and the standard section is installed in the empty frame again. With the continuous increase of standard sections, the tower crane becomes higher. The standard section of the tower crane plays an important role in mechanical equipment such as tower cranes.

[0003] The existing standard sections have the following disadvantages when being spliced: 1. The traditional method is to use angle steel for simple mechanical hinge connection and to lock and fix it with bolts. The splicing method is relatively simple. The traditional method of directly fixing with bolts after docking is particularly easy to loosen during use, causing safety hazards; 2. As the tower crane becomes taller, the standard section has higher requirements for its stability. The existing standard section cannot meet the high-strength and high-stability requirements, which can easily cause the standard section to break at the joint, causing unpredictable losses. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a fixing structure for a tower crane standard section.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] A fixing structure for a standard section of a tower crane comprises a connecting pipe, a clamping mechanism and a limiting mechanism. Four connecting pipes are placed vertically in parallel, and a cross bar is provided between the ends of two adjacent connecting pipes. Both ends of each cross bar are fixedly connected to the ends of the corresponding connecting pipe. Two adjacent connecting pipes are clamped and connected, and limiting mechanisms are provided at both ends of each connecting pipe.

[0007] Preferably, a plurality of pairs of cross-placed reinforcing inclined plates are provided between two adjacent connecting pipes, and both ends of each reinforcing inclined plate are respectively welded and fixed to the side edges of the corresponding connecting pipe.

[0008] Preferably, both ends of each connecting pipe are provided with a clamping mechanism, and the clamping mechanism includes a double-ear seat and a single-ear seat. A pair of double grooves are opened at the outer corners of the top end of the connecting pipe, and each of the double grooves is provided with a double-ear seat welded obliquely. A pair of single grooves are opened at the outer corners of the bottom end of the connecting pipe, and each of the single grooves is provided with a single-ear seat welded obliquely. Each of the double-ear seats is hingedly engaged with the corresponding single-ear seat on another set of standard sections through a hinge pin.

[0009] Preferably, one end of each connecting pipe is recessed with a clamping groove, and the other end is protruding with a clamping block, and two adjacent connecting pipes are correspondingly clamped in the clamping groove to be cooperatively connected.

[0010] Preferably, a pair of trapezoidal blocks are provided at the inner corners of the top end of the connecting tube, and a vertically fixed positioning rod is provided in the middle of the top surface of each trapezoidal block. A pair of positioning tubes are provided at the inner corners of the bottom end of the connecting tube, and the top end of each positioning rod is inserted into the corresponding positioning tube on another set of standard sections.

[0011] Preferably, a pair of spirally penetrating positioning bolts are provided at the upper and lower ends of the outer side surface of the positioning cylinder, and the inner end of each positioning bolt is spirally pressed against the corresponding positioning rod.

[0012] Preferably, the limiting mechanism includes a limiting rod and a limiting plate, a limiting ring is provided at the top end of the connecting tube, a limiting rod is inserted into the limiting ring and slides through the limiting ring, a limiting block is provided at the bottom end of the limiting rod below the limiting ring, a limiting plate is provided at the bottom end of the connecting tube, a pair of inclined blocks are provided at the bottom port of the connecting tube below the limiting plate, and the top end of the limiting rod is inserted into the bottom of the corresponding connecting tube on another set of standard sections.

[0013] Preferably, an H-shaped ear seat is provided at the top end of the limiting rod between the inclined block and the limiting plate, and a pair of movable hinged articulated blocks are provided in two openings of the H-shaped ear seat.

[0014] Preferably, a tension spring is sleeved on the limit rod between the H-shaped ear seat and the limit ring, and the top of the tension spring is respectively pressed against the bottom surfaces of the two hinge blocks, and the outer end of each hinge block is pressed against the corresponding inner bottom side wall of the connecting tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, the double-ear seats are engaged with the corresponding single-ear seats on another set of standard sections and are hinged through hinge pins. At the same time, the top ends of the positioning rods are inserted into the corresponding positioning tubes on another set of standard sections, and the inner ends of the positioning bolts are screwed tightly on the corresponding positioning rods, thereby increasing the stability of the connection between the connecting pipe and the connecting pipe on another set of standard sections;

[0017] 2. In the present invention, the top end of the limit rod is inserted into the bottom of the corresponding connecting pipe on another set of standard sections. Under the action of the tension spring, the outer end of each hinge block is pressed against the side wall of the bottom of the corresponding connecting pipe, so that the H-shaped ear seat on the top end of the limit rod is pressed against the bottom surface of the limit plate, further increasing the stability of the connection between the connecting pipe and the connecting pipe on another set of standard sections;

[0018] To sum up, the present invention solves the problems of inconvenient splicing and poor stability of standard sections through the coordinated use of various mechanisms, and the overall structural design is compact. Through multiple splicing and fixing methods, the convenience of splicing standard sections is increased, and the stability of the standard sections after splicing is further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall splicing of the standard section of the present invention;

[0021] Figure 2 It is a cross-sectional schematic diagram of the standard joint of the present invention;

[0022] Figure 3 For the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 It is a schematic diagram of grooves at both ends of the connecting pipe of the present invention;

[0024] Figure 5 It is a schematic diagram of welding the two ends of the connecting pipe of the present invention;

[0025] Figure 6 It is a schematic diagram of the engaging mechanism of the present invention;

[0026] Figure 7 It is a schematic diagram of the limiting mechanism of the present invention;

[0027] Serial numbers in the figure: connecting pipe 12, reinforcing inclined plate 13, double groove 14, double ear seat 15, single groove 16, single ear seat 17, hinge pin 18, cross bar 19, trapezoidal block 2, positioning rod 21, positioning cylinder 22, positioning bolt 23, limiting ring 24, limiting rod 25, limiting block 26, H-shaped ear seat 27, tension spring 28, hinged block 29, limiting plate 210, inclined block 211. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Embodiment 1: To solve the problem of inconvenient splicing and poor stability of standard sections, this embodiment provides a fixing structure of the standard section of a tower crane, see Figure 1-7 Specifically, it includes a connecting pipe 12, a clamping mechanism, and a limiting mechanism. The four connecting pipes 12 are placed vertically in parallel, and a cross bar 19 is provided between the ends of two adjacent connecting pipes 12. Both ends of each cross bar 19 are fixedly connected to the ends of the corresponding connecting pipes 12. The two adjacent connecting pipes 12 are clamped and connected, and both ends of each connecting pipe 12 are provided with a limiting mechanism; a plurality of pairs of cross-placed reinforcing inclined plates 13 are provided between the two adjacent connecting pipes 12, and both ends of each reinforcing inclined plate 13 are respectively welded and fixed to the side of the corresponding connecting pipe 12; both ends of each reinforcing inclined plate 13 are respectively welded and fixed to the side of the corresponding connecting pipe 12, thereby increasing the stability of a single set of standard sections.

[0030] In the present invention, both ends of each connecting pipe 12 are provided with a snap-fit ​​mechanism, which includes a double-ear seat 15 and a single-ear seat 17. A pair of double grooves 14 are provided at the outer corners of the top end of the connecting pipe 12, and each double groove 14 is provided with a double-ear seat 15 welded obliquely. A pair of single grooves 16 are provided at the outer corners of the bottom end of the connecting pipe 12, and each single groove 16 is provided with a single-ear seat 17 welded obliquely. Each double-ear seat 15 is hingedly engaged with the corresponding single-ear seat 17 on another set of standard sections through a hinge pin 18; a pair of trapezoidal blocks 2 are provided at the inner corners of the top end of the connecting pipe 12, and a vertically fixed positioning rod 21 is provided in the middle of the top surface of each trapezoidal block 2. The bottom inner corner of the connecting pipe 12 A pair of positioning tubes 22 are provided at the side corners, and the top end of each positioning rod 21 is inserted into the corresponding positioning tube 22 on the other set of standard sections; a pair of spirally penetrated positioning bolts 23 are provided at the upper and lower ends of the outer side surface of the positioning tube 22, and the inner end of each positioning bolt 23 is screwed tightly on the corresponding positioning rod 21; the double-ear seats 15 are engaged with the corresponding single-ear seats 17 on the other set of standard sections, and are hinged by the hinge pin 18. At the same time, the top ends of the positioning rods 21 are inserted into the corresponding positioning tubes 22 on the other set of standard sections, and the inner ends of the positioning bolts 23 are screwed tightly on the corresponding positioning rods 21, which increases the stability of the connection between the connecting pipe 12 and the connecting pipe 12 on the other set of standard sections.

[0031] Embodiment 2: One end of each connecting tube 12 is recessed with a snap-in groove, and the other end is protruding with a snap-in block, and two adjacent connecting tubes 12 are connected by the snap-in blocks correspondingly clamped in the snap-in groove, thereby realizing the snap-in connection of the two adjacent connecting tubes; the rest of the structure is the same as embodiment 1.

[0032] Embodiment 3: In embodiment 1, there is still the problem that the connection pipe and the connection pipe on another set of standard sections are not firmly spliced ​​and engaged. Therefore, based on embodiment 1, this embodiment also includes:

[0033] In the present invention, the limiting mechanism includes a limiting rod 25 and a limiting plate 210. A limiting ring 24 is provided at the top end of the connecting tube 12. A limiting rod 25 is inserted into the limiting ring 24 to slide through. A limiting block 26 is provided at the bottom end of the limiting rod 25 below the limiting ring 24. A limiting plate 210 is provided at the bottom end of the connecting tube 12. A pair of inclined blocks 211 are provided at the bottom port of the connecting tube 12 below the limiting plate 210. The top end of the limiting rod 25 is inserted into the bottom of the corresponding connecting tube 12 on another set of standard sections. An H-shaped ear seat 27 is provided at the top end of the limiting rod 25 between the inclined block 211 and the limiting plate 210. A pair of movable hinged articulated blocks 29 are provided in the two openings of the H-shaped ear seat 27. A tension spring 28 is sleeved on the limit rod 25 between the H-shaped ear seat 27 and the limit ring 24, and the top of the tension spring 28 is respectively pressed against the bottom surfaces of the two hinge blocks 29, and the outer end of each hinge block 29 is pressed against the corresponding inner bottom side wall of the connecting pipe 12; the top end of the limit rod 25 is inserted into the inner bottom of the corresponding connecting pipe 12 on the other set of standard sections. Under the action of the tension spring 28, the outer end of each hinge block 29 is driven to press against the corresponding inner bottom side wall of the connecting pipe 12, so that the H-shaped ear seat 27 on the top of the limit rod 25 is pressed against the bottom surface of the limit plate 210, further increasing the stability of the connection between the connecting pipe 12 and the connecting pipe 12 on the other set of standard sections.

[0034] Embodiment 4: In this embodiment, the present invention also proposes a method for using a fixing structure of a tower crane standard section, comprising the following steps:

[0035] Step 1: The two ends of each reinforcement inclined plate 13 are respectively welded and fixed to the side of the corresponding connecting pipe 12, thereby increasing the stability of the single set of standard sections;

[0036] Step 2: The double-ear seats 15 are engaged with the corresponding single-ear seats 17 on the other set of standard sections and are hinged through the hinge pin 18. At the same time, the top ends of the positioning rods 21 are inserted into the corresponding positioning tubes 22 on the other set of standard sections, and the inner ends of the positioning bolts 23 are screwed tightly on the corresponding positioning rods 21, thereby increasing the stability of the connection between the connecting pipe 12 and the connecting pipe 12 on the other set of standard sections;

[0037] Step three, the top end of the limit rod 25 is inserted into the bottom of the corresponding connecting pipe 12 on another set of standard sections. Under the action of the tension spring 28, the outer end of each hinge block 29 is pressed against the corresponding side wall of the bottom of the connecting pipe 12, so that the H-shaped ear seat 27 on the top of the limit rod 25 is pressed against the bottom surface of the limit plate 210, further increasing the stability of the connection between the connecting pipe 12 and the connecting pipe 12 on another set of standard sections.

[0038] The present invention solves the problems of inconvenient splicing and poor stability of standard sections through the coordinated use of various mechanisms, and the overall structural design is compact. The convenience of splicing standard sections is increased through multiple splicing and fixing methods, and the stability of the standard sections after splicing is further increased.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing structure of a tower crane standard section, comprising a connecting pipe (12), a locking mechanism, and a limiting mechanism, characterized in that: The four connecting pipes (12) are placed vertically and in parallel, and two adjacent connecting pipes (12) are snap-fitted and connected, and both ends of each connecting pipe (12) are provided with a limiting mechanism; The limiting mechanism comprises a limiting rod (25) and a limiting plate (210); a limiting ring (24) is provided at the top end of the connecting tube (12); a limiting rod (25) is inserted into the limiting ring (24) and is slidably passed through; a limiting block (26) is provided at the bottom end of the limiting rod (25) below the limiting ring (24); a limiting plate (210) is provided at the bottom end of the connecting tube (12); a pair of inclined blocks (211) are provided at the bottom end of the connecting tube (12) below the limiting plate (210); and the top end of the limiting rod (25) is inserted into the bottom end of the corresponding connecting tube (12) on another set of standard sections; An H-shaped ear seat (27) is provided at the top end of the limiting rod (25) between the inclined block (211) and the limiting plate (210), and a pair of movable hinge blocks (29) are provided in two openings of the H-shaped ear seat (27); A tension spring (28) is sleeved on the limit rod (25) between the H-shaped ear seat (27) and the limit ring (24), and the top of the tension spring (28) is respectively pressed against the bottom surfaces of the two hinge blocks (29), and the outer end of each hinge block (29) is pressed against the inner bottom side wall of the corresponding connecting pipe (12); Both ends of each connecting tube (12) are provided with a snap-fit ​​mechanism, the snap-fit ​​mechanism comprising a double-ear seat (15) and a single-ear seat (17); a pair of double grooves (14) are provided at the outer corners of the top end of the connecting tube (12); each of the double grooves (14) is provided with a double-ear seat (15) welded obliquely; a pair of single grooves (16) are provided at the outer corners of the bottom end of the connecting tube (12); each of the single grooves (16) is provided with a single-ear seat (17) welded obliquely; each of the double-ear seats (15) is snap-fitted and hingedly connected with a corresponding single-ear seat (17) on another set of standard sections via a hinge pin (18).

2. The fixing structure of a tower crane standard section according to claim 1 is characterized in that: One end of each connecting pipe (12) is recessed with a clamping groove, and the other end is protruding outward with a clamping block, and two adjacent connecting pipes (12) are correspondingly clamped in the clamping groove and matched and connected.

3. The fixing structure of a tower crane standard section according to claim 1 is characterized in that: A pair of trapezoidal blocks (2) are provided at the inner corners of the top end of the connecting tube (12), and a vertically fixed positioning rod (21) is provided at the middle of the top surface of each trapezoidal block (2). A pair of positioning cylinders (22) are provided at the inner corners of the bottom end of the connecting tube (12), and the top end of each positioning rod (21) is inserted into a corresponding positioning cylinder (22) on another set of standard sections.

4. The fixing structure of a tower crane standard section according to claim 3 is characterized in that: A pair of spirally penetrating positioning bolts (23) are provided at the upper and lower ends of the outer side surface of the positioning cylinder (22), and the inner end of each positioning bolt (23) is spirally pressed against the corresponding positioning rod (21).

Images