CN219449137U

CN219449137U - Telescopic structure of telescopic arm of crane

Info

Publication number: CN219449137U
Application number: CN202321459046.0U
Authority: CN
Inventors: 蒿景磊; 朱敬献; 朱永慧; 田广栋; 田广震
Original assignee: Henan General Mine Hoisting Machinery Co ltd
Current assignee: Henan General Mine Hoisting Machinery Co ltd
Priority date: 2023-06-09
Filing date: 2023-06-09
Publication date: 2023-08-01
Anticipated expiration: 2033-06-09

Abstract

The utility model discloses a telescopic structure of a telescopic boom of a crane, and relates to the technical field of cranes. The utility model comprises a telescopic arm structure and a driving mechanism, wherein the telescopic arm structure comprises a first arm pipe, a second arm pipe, a third arm pipe and a threaded driving pipe are arranged in the first arm pipe, the first arm pipe is movably connected with the third arm pipe through a hydraulic rod, sliding grooves are formed in the inner walls of the first arm pipe and the second arm pipe, sliding strips are fixed on the outer side faces of the second arm pipe and the third arm pipe, the second arm pipe and the third arm pipe are respectively and movably connected in the first arm pipe and the second arm pipe through sliding connection of the sliding strips in the sliding grooves, the second arm pipe is rotatably connected with the threaded driving pipe positioned in the first arm pipe through a first threaded driving seat, and the pipe body of the threaded driving pipe is in the second threaded driving seat fixed at the rear end of the third arm pipe. The telescopic boom structure and the driving mechanism solve the problems of slow response and slow telescopic progress of the telescopic boom of the crane.

Description

Telescopic structure of telescopic arm of crane

Technical Field

The utility model belongs to the technical field of cranes, and particularly relates to a telescopic structure of a telescopic boom of a crane.

Background

The crane boom is a core component of the crane and is the most important bearing structural member in the hoisting operation of the crane; the weight, strength, rigidity, telescopic efficiency and stable and reliable working of the crane boom directly influence the service performance of the automobile crane product. Through the technical innovation of the crane boom, the lifting capacity and the telescopic efficiency of the crane boom are improved and are targets continuously pursued by crane manufacturers.

At present, the telescopic boom of a crane is generally controlled to stretch through the driving traction of hydraulic equipment, and because the weight of the telescopic boom is generally large, the driving traction of single hydraulic equipment easily causes the problems of slow response and slow stretching progress of the telescopic boom due to the influence of the weight in the stretching process of the telescopic boom.

Disclosure of Invention

The utility model aims to provide a telescopic structure of a telescopic boom of a crane, which solves the problems of slow response and slow telescopic progress of the telescopic boom of the crane by arranging the telescopic boom structure and a driving mechanism.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a telescopic structure of a telescopic arm of a crane, which comprises a telescopic arm structure and a driving mechanism, wherein the driving mechanism is movably connected inside the rear end of the telescopic arm structure;

the telescopic arm structure comprises a first arm pipe, a second arm pipe, a third arm pipe and a threaded driving pipe, wherein the second arm pipe, the third arm pipe and the threaded driving pipe are sequentially arranged in the first arm pipe from outside to inside, the upper surface of the first arm pipe is movably connected with a hydraulic rod, the movable connection with the third arm pipe is carried out at the front end of the third arm pipe through the movable connection of the hydraulic rod, sliding grooves are formed in the inner walls of the first arm pipe and the second arm pipe along the axes in a surrounding manner, sliding strips are fixed on the outer side surfaces of the second arm pipe and the third arm pipe along the axes in an annular array, the movable connection of the second arm pipe and the third arm pipe in the first arm pipe and the second arm pipe is carried out through the sliding connection of the sliding strips in the sliding grooves, the rear end of the second arm pipe is fixedly connected with a first threaded driving seat, the pipe body of the threaded driving pipe is in threaded connection with the threaded driving seat in the second arm pipe; through the setting of first arm pipe, second arm pipe, third arm pipe and screw drive pipe, can screw drive's mode, not only can carry out the linkage between the structure fast, synchronous execution arm pipe's flexible, accomplish the flexible process of flexible arm fast, use screw drive to drive between each arm pipe moreover, have faster response ability and executive capability, can accomplish the flexible traction to flexible arm fast.

Further, the telescoping end of the second arm tube is flush with the first arm tube.

Further, the third arm pipe partially penetrates the second arm pipe.

Further, the number of the sliding strips is the same as that of the sliding grooves.

Further, the driving mechanism comprises a driving motor which is fixedly connected to the rear end of the first arm pipe and is movably connected with a driving screw rod which is in threaded connection with the inside of the first threaded driving seat through a coupler.

Further, a sliding groove is formed in the surface of the driving screw, and movable connection in the threaded driving pipe is achieved through sliding connection of the sliding strip in the sliding groove.

The utility model has the following beneficial effects:

1. according to the utility model, through the arrangement of the first arm pipe, the second arm pipe, the third arm pipe and the threaded driving pipe, the linkage between structures can be rapidly carried out in a threaded transmission mode, the telescopic operation of the arm pipes is synchronously executed, and the telescopic operation of the telescopic arm is rapidly completed.

2. According to the utility model, through the arrangement of the first arm pipe, the second arm pipe, the third arm pipe and the threaded driving pipe, the arm pipes are driven by threaded transmission, so that the telescopic traction device has quick response capability and execution capability, and can quickly realize telescopic traction of the telescopic arm.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

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

FIG. 3 is a schematic view of a first arm tube according to the present utility model;

FIG. 4 is a schematic view of a second arm tube according to the present utility model;

FIG. 5 is a schematic view of a third arm tube according to the present utility model;

FIG. 6 is a schematic view of a threaded drive tube according to the present utility model;

FIG. 7 is a schematic diagram of a driving mechanism according to the present utility model.

Reference numerals:

1. a telescopic arm structure; 101. a first arm tube; 1011. a chute; 102. a hydraulic rod; 103. a second arm tube; 1031. a slide bar; 1032. a first screw drive seat; 104. a third arm tube; 1041. a second screw driving seat; 105. a threaded drive tube; 2. a driving mechanism; 201. a driving motor; 202. the screw is driven.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Referring to fig. 1-7, the utility model discloses a telescopic structure of a telescopic boom of a crane, which comprises a telescopic boom structure 1 and a driving mechanism 2, wherein the driving mechanism 2 is movably connected in the rear end of the telescopic boom structure 1;

the telescopic arm structure 1 comprises a first arm pipe 101, a second arm pipe 103, a third arm pipe 104 and a threaded driving pipe 105, wherein the second arm pipe 103, the third arm pipe 104 and the threaded driving pipe 105 are sequentially arranged inside the first arm pipe 101 from outside to inside, the upper surface of the first arm pipe 101 is movably connected with a hydraulic rod 102, the movable connection with the third arm pipe 104 is carried out through the movable connection of the hydraulic rod 102 at the front end of the third arm pipe 104, a sliding groove 1011 is formed on the inner walls of the first arm pipe 101 and the second arm pipe 103 along the axis in a surrounding manner, sliding strips 1031 are fixedly arranged on the outer side surfaces of the second arm pipe 103 and the third arm pipe 104 along the axis annular array, the number of the sliding strips 1031 is the same as that of the sliding groove 1011, the second arm pipe 103 is movably connected inside the first arm pipe 101 through the sliding connection of the sliding strips 1031 inside the sliding groove 1011, the second arm pipe 103 and the third arm pipe 104 are respectively connected with the movable connection of the sliding strips 103 inside the sliding groove 1011 through the sliding strips inside the sliding strips 1032, the second arm 1032 is fixedly connected with the threaded driving pipe 105 inside the threaded driving seat 105 through the second arm seat inside the threaded driving pipe 105;

when the telescopic arm structure 1 is used, the telescopic arm structure can be matched with the driving mechanism 2, under the driving of the driving mechanism 2, the second arm pipe 103 moves out of the first arm pipe 101 under the combined action of the thread transmission and the hydraulic rod 102, meanwhile, the thread driving pipe 105 rotates on the first thread driving seat 1032, and the first thread driving seat 1032 rotates and simultaneously carries out thread transmission on the second thread driving seat 1041, so that the third arm pipe 104 moves out along the second arm pipe 103 under the limiting action of the sliding groove 1011 on the sliding strip 1031, and synchronous extension and retraction of the first arm pipe 101, the second arm pipe 103 and the third arm pipe 104 can be realized; through the setting of first arm pipe 101, second arm pipe 103, third arm pipe 104 and screw thread drive pipe 105, can screw thread transmission's mode, not only can carry out the linkage between the structure fast, synchronous execution arm pipe's flexible, accomplish the flexible process of flexible arm fast, use screw thread transmission to drive between each arm pipe moreover, have quicker response ability and executive capability, can accomplish the flexible traction to flexible arm fast.

Wherein the telescoping end of the second arm tube 103 is flush with the first arm tube 101 as shown in fig. 1-2.

Wherein the third arm tube 104 partially extends through the second arm tube 103 as shown in fig. 1-2.

As shown in fig. 1, 2 and 7, the driving mechanism 2 comprises a driving motor 201, wherein the driving motor 201 is fixedly connected to the rear end of the first arm pipe 101, and is movably connected with a driving screw 202 which is in threaded connection with the inside of a first threaded driving seat 1032 through a coupling;

a sliding groove 1011 is formed in the surface of the driving screw 202, and movable connection in the threaded driving pipe 105 is performed through sliding connection of the sliding strip 1031 in the sliding groove 1011;

the second arm pipe 103 can be driven to move and extend in a threaded transmission mode by the driving motor 201 through the arrangement of the driving screw 202 and the arrangement of the driving motor 201.

One specific application of this embodiment is: when the telescopic boom of the crane is used, the telescopic boom of the crane can be matched with the driving motor 201, the second boom pipe 103 can be moved out of the first boom pipe 101 under the combined action of the threaded transmission and the hydraulic rod 102 under the driving of the driving screw 202, meanwhile, the threaded driving pipe 105 can rotate on the first threaded driving seat 1032, and the first threaded driving seat 1032 can carry out the threaded transmission on the second threaded driving seat 1041 while rotating, so that the third boom pipe 104 can be moved out along the second boom pipe 103 under the limiting action of the sliding chute 1011 on the sliding strip 1031, and the synchronous extension and retraction of the first boom pipe 101, the second boom pipe 103 and the third boom pipe 104 can be realized.

The foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, and any modification, equivalent replacement, and improvement of some of the technical features described in the foregoing embodiments are all within the scope of the present utility model.

Claims

1. The utility model provides a telescopic structure of flexible arm of hoist, includes flexible arm structure (1) and actuating mechanism (2), its characterized in that: a driving mechanism (2) is movably connected in the rear end of the telescopic arm structure (1);

the telescopic arm structure (1) comprises a first arm pipe (101), a second arm pipe (103), a third arm pipe (104) and a threaded driving pipe (105), wherein the second arm pipe (103), the third arm pipe (104) and the threaded driving pipe (105) are sequentially arranged inside the first arm pipe (101) from outside to inside, a hydraulic rod (102) is movably connected to the upper surface of the first arm pipe (101), the hydraulic rod (102) is movably connected with the third arm pipe (104) at the front end of the third arm pipe (104), the inner walls of the first arm pipe (101) and the second arm pipe (103) are respectively provided with a sliding groove (1011) along the axis in a surrounding mode, the outer side faces of the second arm pipe (103) and the third arm pipe (104) are fixedly provided with sliding strips (1031) along the annular array of the axis, the second arm pipe (103) and the third arm pipe (104) are respectively connected with the first arm pipe (103) and the second arm pipe (1032) through the sliding strips (103) in the sliding connection inside the sliding grooves (1011) in the sliding grooves (1031), the second arm pipe 1032 is fixedly connected with the first arm pipe (103) and the threaded driving pipe (1032) in the threaded driving seat (105) in the threaded driving seat, the pipe body of the threaded driving pipe (105) is in threaded connection with the inside of a second threaded driving seat (1041) fixed at the rear end of the third arm pipe (104).

2. The telescopic structure of a telescopic boom of a crane according to claim 1, wherein: the telescopic end of the second arm pipe (103) is flush with the first arm pipe (101).

3. The telescopic structure of a telescopic boom of a crane according to claim 1, wherein: the third arm pipe (104) partially penetrates through the second arm pipe (103).

4. The telescopic structure of a telescopic boom of a crane according to claim 1, wherein: the number of the sliding strips (1031) is the same as that of the sliding grooves (1011).

5. The telescopic structure of a telescopic boom of a crane according to claim 1, wherein: the driving mechanism (2) comprises a driving motor (201), wherein the driving motor (201) is fixedly connected to the rear end of the first arm pipe (101) and is movably connected with a driving screw (202) which is in threaded connection with the inside of the first threaded driving seat (1032) through a coupler.

6. The telescopic structure of a telescopic boom of a crane according to claim 5, wherein: a sliding groove (1011) is formed in the surface of the driving screw (202), and movable connection in the threaded driving pipe (105) is achieved through sliding connection of a sliding strip (1031) in the sliding groove (1011).