CN213623018U

CN213623018U - Self-control tower crane pull rod structure convenient for length adjustment

Info

Publication number: CN213623018U
Application number: CN202022438312.4U
Authority: CN
Inventors: 苏剑秋
Original assignee: Fujian Jinhua Construction Equipment Co ltd
Current assignee: Fujian Jinhua Construction Equipment Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-07-06
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a conveniently adjust length's automatic control tower crane draw bar structure, including first bracing piece, second bracing piece and mounting bar, the outside of first bracing piece is provided with the second bracing piece, and all installs the mounting bar at both ends about the second bracing piece, the inside of mounting bar is provided with the connecting block, and the upper end of connecting block is connected with the head rod, the second connecting rod is connected to the upper end of head rod, first installation piece is installed to the medial surface of second connecting rod, the top of first fixed block is provided with the second fixed block of installing in the first bracing piece outside, the inside of second bracing piece is provided with the adapter sleeve of installing in first bracing piece below. This convenient automatic control tower crane pull rod structure of adjusting length, convenient adjusting length, and can the stable connection after the length change, pull rod intensity improves, has solved the pull rod and has connected the position atress great, leads to the inhomogeneous problem of atress.

Description

Self-control tower crane pull rod structure convenient for length adjustment

Technical Field

The utility model relates to a hoist technical field specifically is a convenient length-adjusting's automatic control tower crane pull rod structure.

Background

The tower crane is a rotary crane with a movable arm mounted on the upper part of a high tower body, is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction, and mainly comprises a cargo boom, a tower body, a rotary table, a bearing seat, a balance arm, an underframe and the like, and a pull rod is used for reducing the deflection of the cargo boom and improving the stress of the cargo boom.

The inconvenient regulation length of tower crane draw bar structure at present, and be difficult to the stable connection after the length change, the pull rod is connected the position atress simultaneously and is great, leads to the atress inhomogeneous, and pull rod strength reduces, consequently, the utility model provides a conveniently adjust self-control tower crane draw bar structure of length to solve the above-mentioned problem that provides.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a conveniently adjust automatic control tower crane draw bar structure of length to solve the inconvenient length of adjusting of present tower crane draw bar structure that proposes in the above-mentioned background art, and be difficult to the stable connection after the length change, the pull rod is connected the position atress simultaneously and is great, leads to the atress inhomogeneous, the problem that pull rod strength reduces.

In order to achieve the above object, the utility model provides a following technical scheme: a self-control tower crane pull rod structure convenient for length adjustment comprises a first supporting rod, a second supporting rod and a mounting bar, wherein the outer side of the first supporting rod is provided with the second supporting rod, the left end and the right end of the second supporting rod are respectively provided with the mounting bar, the inside of the mounting bar is provided with a connecting block, the upper end of the connecting block is connected with a first connecting rod, the upper end of the first connecting rod is connected with a second connecting rod, the upper end of the second connecting rod is provided with a first fixing block, the upper end of the first fixing block is provided with a second fixing block, the inner side surface of the second connecting rod is provided with a first mounting block, the lower end of the first mounting block is connected with a spring, the lower end of the spring is provided with a second mounting block, the second fixing block arranged on the outer side of the first supporting rod is arranged above the first fixing block, and the upper, and the upper end of telescopic link is provided with the fixed plate, the inside of second bracing piece is provided with the adapter sleeve of installing in first bracing piece below, and the inside of adapter sleeve runs through there is the ejector pin to the lower extreme welded fastening of ejector pin has the rocking handle.

Preferably, a sliding connection is formed between the first support rod and the second support rod, and a protruding structure is arranged at the lower end of the first support rod.

Preferably, the cross section of the connecting block is T-shaped, the connecting block is connected with the mounting bar in a sliding manner, and the connecting block is hinged to the first connecting rod.

Preferably, the second fixed block is arranged symmetrically left and right about the center line of the first supporting rod, and the second fixed block is hinged to the telescopic rod.

Preferably, the first mounting block is connected with the spring in a rotating manner, and the first mounting block is arranged in bilateral symmetry with respect to the center line of the first supporting rod.

Preferably, the ejector rod and the connecting sleeve form threaded connection, and the connecting sleeve and the second supporting rod are welded and fixed.

Compared with the prior art, the beneficial effects of the utility model are that: the self-control tower crane pull rod structure convenient for length adjustment has the advantages that the length is convenient to adjust, the length can be stably connected after being changed, the strength of the pull rod is improved, and the problem that the stress is uneven due to the fact that the stress of the connection part of the pull rod is large is solved;

1. the spring is connected with the first mounting block and the second mounting block in a rotating mode to prevent the spring from twisting, the lower end of the first connecting rod is hinged with the connecting block, the connecting block slides in the mounting bar under the tension of the spring, and the first supporting rod and the second supporting rod are prevented from displacing too fast to adjust the length conveniently;

2. the device is provided with a top rod, a rocking handle and a connecting sleeve, the top rod is driven to rotate by anticlockwise rotating the top rod, the top rod moves upwards in the connecting sleeve due to threaded connection between the top rod and the connecting sleeve, the upper end of the top rod is in contact with a first supporting rod, the effect of supporting and fixing the first supporting rod is achieved, and stable connection is facilitated;

3. be equipped with head rod, second connecting rod and telescopic link, through the hoist jib loading boom downstream, the fixed plate pressurized slightly descends in first bracing piece upper end, makes the telescopic link rotate around the second fixed block and shorten, through fixed plate, second fixed block and first fixed block, equally divide the pressure of first bracing piece upper end, plays the effect of avoiding stress concentration, has solved the pull rod and has connected the position atress great, leads to the inhomogeneous problem of atress.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the connection structure of the mounting bar and the connecting block of the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1 at B according to the present invention;

fig. 5 is an enlarged schematic structural diagram of the point C in fig. 1 according to the present invention.

In the figure: 1. a first support bar; 2. a second support bar; 3. mounting a bar; 4. connecting blocks; 5. a first connecting rod; 6. a second connecting rod; 7. a first fixed block; 8. a second fixed block; 9. a telescopic rod; 10. a fixing plate; 11. a first mounting block; 12. a top rod; 13. a rocking handle; 14. connecting sleeves; 15. a second mounting block; 16. a spring.

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. 1-5, the present invention provides a technical solution: a self-control tower crane pull rod structure convenient for length adjustment comprises a first supporting rod 1, a second supporting rod 2, a mounting bar 3, a connecting block 4, a first connecting rod 5, a second connecting rod 6, a first fixing block 7, a second fixing block 8, a telescopic rod 9, a fixing plate 10, a first mounting block 11, a push rod 12, a rocking handle 13, a connecting sleeve 14, a second mounting block 15 and a spring 16, wherein the second supporting rod 2 is arranged outside the first supporting rod 1, the mounting bars 3 are respectively mounted at the left end and the right end of the second supporting rod 2, the connecting block 4 is arranged inside the mounting bar 3, the upper end of the connecting block 4 is connected with the first connecting rod 5, the upper end of the first connecting rod 5 is connected with the second connecting rod 6, the first fixing block 7 is mounted at the upper end of the second connecting rod 6, the second fixing block 8 is arranged at the upper end of the first fixing block 7, the first mounting block 11 is mounted at the inner side surface, the lower end of the first mounting block 11 is connected with a spring 16, the lower end of the spring 16 is provided with a second mounting block 15, a second fixing block 8 mounted on the outer side of the first supporting rod 1 is arranged above the first fixing block 7, the upper end of the second fixing block 8 is connected with a telescopic rod 9, the upper end of the telescopic rod 9 is provided with a fixing plate 10, a connecting sleeve 14 mounted below the first supporting rod 1 is arranged inside the second supporting rod 2, a top rod 12 penetrates through the inside of the connecting sleeve 14, and the lower end of the top rod 12 is fixedly welded with a rocking handle 13;

as shown in fig. 1 and 2, a sliding connection is formed between the first support rod 1 and the second support rod 2, and a protrusion structure is arranged at the lower end of the first support rod 1, so as to facilitate the lifting of the pull rod structure and prevent the slipping, the second fixing blocks 8 are arranged in bilateral symmetry with respect to the center line of the first support rod 1, and the second fixing blocks 8 are hinged to the telescopic rod 9, so as to facilitate the rotation of the telescopic rod 9, the first mounting blocks 11 are connected to the spring 16 in a rotating manner, and the first mounting blocks 11 are arranged in bilateral symmetry with respect to the center line of the first support rod 1, so as to function of connecting the first connecting rod 5 and the second connecting rod 6;

as shown in fig. 3 and 4, the cross section of the connecting block 4 is T-shaped, the connecting mode between the connecting block 4 and the mounting bar 3 is sliding connection, the connecting block 4 is hinged to the first connecting rod 5, the connecting block 4 can move up and down conveniently to drive the first connecting rod 5 to rotate, the ejector rod 12 and the connecting sleeve 14 form threaded connection, the connecting sleeve 14 and the second supporting rod 2 are welded and fixed, and the rocking handle 13 is rotated conveniently to control the ejector rod 12 to move up and down.

The working principle is as follows: when the self-control tower crane pull rod structure convenient for length adjustment is used, firstly, as shown in fig. 1, a first supporting rod 1 moves downwards through a crane boom to slide downwards in a second supporting rod 2, a bulge structure is arranged at the lower end of the first supporting rod 1 to play a role in preventing slippage, and as shown in fig. 5 and fig. 2, a fixed plate 10 is pressed on the upper end of the first supporting rod 1 to slightly descend so that a telescopic rod 9 rotates around a second fixed block 8 and shortens, the pressure on the first supporting rod 1 is uniformly divided through the fixed plate 10, the second fixed block 8 and the first fixed block 7 to play a role in avoiding stress concentration, when the crane ascends, as the first fixed block 7 is fixedly connected with the first supporting rod 1, the first fixed block 7 moves upwards along with the first supporting rod 1, the hinged connection angle between the second connecting rod 6 and the first connecting rod 5 is increased, and a spring 16 is generated by extension, the spring 16 is rotatably connected with the first mounting block 11 and the second mounting block 15, so that the spring 16 is prevented from being twisted, the lower end of the first connecting rod 5 is hinged with the connecting block 4, and the connecting block 4 slides in the mounting bar 3 under the tension of the spring 16, so that the first supporting rod 1 and the second supporting rod 2 are prevented from being displaced too fast;

referring to fig. 1 and 4, after the first supporting rod 1 finishes moving, the push rod 12 is rotated counterclockwise to drive the push rod 12 to rotate, due to the threaded connection between the push rod 12 and the connecting sleeve 14, the push rod 12 moves upward in the connecting sleeve 14, the upper end of the push rod 12 contacts with the first supporting rod 1 to play a role in supporting and fixing the first supporting rod 1, and thus the using method of the self-control tower crane pull rod structure with convenient length adjustment is provided.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connected mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt among the prior art, and conventional model, including the conventional connected mode among the circuit connection adoption prior art, and the details are not repeated here, and the content that does not make detailed description in this description belongs to the prior art that skilled person in the art knows.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a convenient length-adjusting's automatic control tower crane draw bar structure, includes first bracing piece (1), second bracing piece (2) and mounting bar (3), its characterized in that: the outer side of the first supporting rod (1) is provided with a second supporting rod (2), the left end and the right end of the second supporting rod (2) are provided with mounting strips (3), a connecting block (4) is arranged in the mounting strips (3), the upper end of the connecting block (4) is connected with a first connecting rod (5), the upper end of the first connecting rod (5) is connected with a second connecting rod (6), a first fixing block (7) is arranged at the upper end of the second connecting rod (6), a second fixing block (8) is arranged at the upper end of the first fixing block (7), a first mounting block (11) is arranged on the inner side surface of the second connecting rod (6), the lower end of the first mounting block (11) is connected with a spring (16), a second mounting block (15) is arranged at the lower end of the spring (16), a second fixing block (8) arranged at the outer side of the first supporting rod (1) is arranged above the first fixing block (7), and the upper end of second fixed block (8) is connected with telescopic link (9) to the upper end of telescopic link (9) is provided with fixed plate (10), the inside of second bracing piece (2) is provided with and installs adapter sleeve (14) in first bracing piece (1) below, and the inside of adapter sleeve (14) runs through has ejector pin (12), and the lower extreme welded fastening of ejector pin (12) has rocking handle (13).

2. The self-control tower crane pull rod structure convenient for length adjustment according to claim 1, characterized in that: the first supporting rod (1) is connected with the second supporting rod (2) in a sliding mode, and a protruding structure is arranged at the lower end of the first supporting rod (1).

3. The self-control tower crane pull rod structure convenient for length adjustment according to claim 1, characterized in that: the cross section of the connecting block (4) is T-shaped, the connecting block (4) and the mounting bar (3) are connected in a sliding mode, and the connecting block (4) is hinged to the first connecting rod (5).

4. The self-control tower crane pull rod structure convenient for length adjustment according to claim 1, characterized in that: the second fixing blocks (8) are arranged in bilateral symmetry about the center line of the first supporting rod (1), and the second fixing blocks (8) are hinged to the telescopic rod (9).

5. The self-control tower crane pull rod structure convenient for length adjustment according to claim 1, characterized in that: the first mounting block (11) is connected with the spring (16) in a rotating mode, and the first mounting block (11) is arranged in a left-right symmetrical mode relative to the center line of the first supporting rod (1).

6. The self-control tower crane pull rod structure convenient for length adjustment according to claim 1, characterized in that: the ejector rod (12) and the connecting sleeve (14) form threaded connection, and the connecting sleeve (14) and the second supporting rod (2) are fixedly welded.