CN212735695U

CN212735695U - Tool clamp of tower crane boom

Info

Publication number: CN212735695U
Application number: CN202021134397.0U
Authority: CN
Inventors: 冯健健; 朱美英; 朱林霞; 高宇超; 林皎
Original assignee: Zhejiang Deying Machinery Co ltd
Current assignee: Zhejiang Deying Machinery Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-19
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a frock clamp of a tower crane jib, which belongs to the technical field of tower cranes and aims at providing a frock clamp of a tower crane jib which is convenient to adjust and is stable and firm to fix a lower chord, the frock clamp comprises a clamping plate, a fixed seat and an adjusting device, the clamping plate is L-shaped, the clamping plate is connected with the fixed seat and forms a square fixed space with the fixed seat, the adjusting device comprises a fixed part, a guide pipe, a first spring and an adjusting screw rod, the fixed part comprises a fixed head and a slide rod which are connected with each other, the fixed head extends into the fixed space, the fixed head is provided with an L-shaped bayonet matched with the fixed space, the slide rod extends into the guide pipe and is in sliding connection with the guide pipe, the adjusting screw rod extends into the guide pipe and is in threaded connection with the guide pipe, the first spring is arranged in the guide pipe, one end of the first spring is abutted against the slide rod, the adjusting screw rod is rotated to push the fixing head to move towards the direction of the fixing space.

Description

Tool clamp of tower crane boom

Technical Field

The utility model relates to a tower crane, more specifically say, it relates to tower crane jib loading boom's frock clamp.

Background

At present, the crane boom manufactured by domestic tower cranes is simple positioning tools, positioning plates are directly welded on the tools, but in order to ensure the tolerance between the lower chords of the crane boom, a movably connected tool clamp is used for adjusting and fixing the lower chords, but the lower chords are not conveniently adjusted by the tool clamp, and the lower chords are not stably and firmly fixed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a adjust convenient and fixed firm tower crane jib loading boom's frock clamp down chord.

In order to achieve the above purpose, the utility model provides a following technical scheme:

frock clamp of tower crane jib loading boom, frock clamp includes the cardboard, fixing base and adjusting device, the cardboard is the L form, the cardboard is connected with the fixing base and forms square fixed space with the fixing base, adjusting device includes the mounting, the stand pipe, first spring and adjusting screw, the stand pipe is connected with the fixing base and the stand pipe is to the direction slope of fixed space, the mounting comprises interconnect's fixed head and slide bar, the fixed head stretches into fixed space, it has the L form bayonet socket with fixed space complex to open on the fixed head, the slide bar stretches into the stand pipe and with stand pipe sliding connection, adjusting screw stretches into the stand pipe and with stand pipe threaded connection, first spring is arranged in the stand pipe, the one end and the slide bar of first spring are contradicted, the other end and the adjusting screw of first spring are contradicted, rotatory adjusting screw promotes the direction removal of fixed head to fixed space.

Further, it has a plurality of blind holes to open on the cardboard, all is equipped with pretension head and second spring in the blind hole, and pretension head comprises interconnect's guide bar and hemispherical head, and the one end that the guide bar stretched into blind hole and guide bar is connected with the one end of second spring, and the other end and the cardboard of second spring are connected, and hemispherical head all stretches into in the fixed space.

Furthermore, a plurality of rubber bulges are arranged in the L-shaped bayonet.

Furthermore, a sliding groove is formed in the inner wall of the guide pipe, and a sliding strip in sliding connection with the sliding groove is arranged on the sliding rod.

By adopting the technical scheme, the beneficial effects of the utility model are that: the lower chord extends into the fixed space, and is fixed in the fixed space under the action of the adjusting device, so that the lower chord is stably and firmly fixed on the tool clamp; and the adjustment of the tooling fixture is more convenient, so that the tolerance between the lower chords can be conveniently adjusted.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic top view of the fixing base.

Fig. 3 is a schematic sectional structure view of the adjusting device.

FIG. 4 is a partial sectional view of the card.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 4.

A tower crane boom fixture convenient for adjusting a lower chord and stable and firm in fixation.

The utility model discloses a concrete implementation scheme: the tooling clamp comprises a clamping plate 1, a fixed seat 2 and an adjusting device 3, wherein the clamping plate 1 is L-shaped, the clamping plate 1 is connected with the fixed seat 2 and forms a square fixed space 4 with the fixed seat 2, the adjusting device 3 comprises a fixed part 5, guide tube 6, first spring 7 and adjusting screw 8, guide tube 6 is connected with fixing base 2 and guide tube 6 inclines to the direction of fixed space 4, mounting 5 comprises interconnect's fixed head 9 and slide bar 10, fixed head 9 stretches into fixed space 4, it has L form bayonet 11 with fixed space 4 complex to open on the fixed head 9, slide bar 10 stretches into guide tube 6 and with 6 sliding connection of guide tube, adjusting screw 8 stretches into guide tube 6 and with 6 threaded connection of guide tube, first spring 7 is arranged in guide tube 6, the one end of first spring 7 is contradicted with slide bar 10, the other end of first spring 7 is contradicted with adjusting screw 8, rotatory adjusting screw 8 promotes fixed head 9 and removes to the direction of fixed space 4.

After the boom lower chord 101 is inserted into the fixing space 4, the adjusting bolt is rotated, and the adjusting bolt pushes the first spring 7 and the sliding rod 10 to move, so that the fixing head 9 moves obliquely upwards, namely the fixing head 9 moves along the fixing space 4 in the diagonal direction of the cross section until the side wall of the lower chord 101 is clamped into the L-shaped bayonet 11, and the lower chord 101 is adjusted and fixed; by the arrangement, the size of the fixing space 4 can be adjusted, so that the lower chord 101 is fixed on the clamp, and the tolerance between the lower chords 101 of the crane arm can be ensured; the size of the fixed space 4 can be adjusted more conveniently by the arrangement of the adjusting device 3; the setting of first spring 7 for behind fixed head 9 and lower chord 101 support, continue to rotate adjusting bolt, make first spring 7 extruded, under the effect of first spring 7 elastic force, first spring 7 extrudees mounting 5, thereby has increased the pretightning force between fixed head 9 and the lower chord 101, thereby fixes on anchor clamps with lower chord 101 more stable firm.

The clamping plate 1 is provided with a plurality of blind holes 12, each blind hole 12 is internally provided with a pre-tightening head 13 and a second spring 14, each pre-tightening head 13 consists of a guide rod 15 and a hemispherical head 16 which are connected with each other, each guide rod 15 extends into the blind hole 12, one end of each guide rod 15 is connected with one end of each second spring 14, the other end of each second spring 14 is connected with the clamping plate 1, and each hemispherical head 16 extends into the fixed space 4; a plurality of rubber bulges 17 are arranged in the L-shaped bayonet 11.

Lower chord 101 stretches into in the fixed space 4 and when fixed under the effect of fixed head 9, hemispherical head 16 contradicts with lower chord 101 with protruding 17 of rubber, it is fixed along with lower chord 101 is extruded, hemispherical head 16 atress makes guide bar 15 remove and extrude second spring 14 in to blind hole 12, protruding 17 of rubber is also extruded, so under second spring 14 and the protruding 17 elastic force of rubber, the pretightning force between protruding 17 of rubber and hemispherical head 16 and lower chord 101 strengthens greatly, thereby fix on anchor clamps with lower chord 101 more stable firm.

The inner wall of the guide tube 6 is provided with a sliding groove 18, and the sliding rod 10 is provided with a sliding strip 19 which is connected with the sliding groove 18 in a sliding way.

When the slide bar 10 slides. The sliding bar 19 slides on the sliding groove 18, so as to position the sliding rod 10, prevent the sliding rod 10 from rotating, and ensure the adjustment and fixation of the lower chord 101 by the fixing head 9.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and the skilled in the art can carry out the common changes and replacements within the technical solution of the present invention.

Claims

1. Frock clamp of tower crane jib loading boom, characterized by: frock clamp includes the cardboard, fixing base and adjusting device, the cardboard is the L form, the cardboard is connected with the fixing base and forms square fixed space with the fixing base, adjusting device includes the mounting, the stand pipe, first spring and adjusting screw, the stand pipe is connected with the fixing base and the stand pipe inclines to the direction of fixed space, the mounting comprises interconnect's fixed head and slide bar, the fixed head stretches into fixed space, it has the L form bayonet socket with fixed space complex to open on the fixed head, the slide bar stretches into the stand pipe and with stand pipe sliding connection, adjusting screw stretches into the stand pipe and with stand pipe threaded connection, first spring is arranged in the stand pipe, the one end and the slide bar of first spring are contradicted, the other end and the adjusting screw of first spring are contradicted, rotatory adjusting screw promotes the direction removal of fixed space of fixed head.

2. The tool clamp of the tower crane boom according to claim 1, wherein: open on the cardboard and have a plurality of blind holes, all be equipped with pretension head and second spring in the blind hole, pretension head comprises interconnect's guide bar and hemispherical head, and the guide bar stretches into the blind hole and the one end of guide bar is connected with the one end of second spring, and the other end and the cardboard of second spring are connected, and hemispherical head all stretches into in the fixed space.

3. The tool clamp of the tower crane boom as claimed in claim 2, wherein a plurality of rubber protrusions are arranged in the L-shaped bayonet.

4. The tool clamp of the tower crane boom according to claim 1, wherein the inner wall of the guide tube is provided with a sliding groove, and the sliding rod is provided with a sliding strip which is slidably connected with the sliding groove.