CN218905311U

CN218905311U - Arm support processing and positioning tool

Info

Publication number: CN218905311U
Application number: CN202223525267.1U
Authority: CN
Inventors: 聂体钢; 黄建兵; 倪川皓; 陈林; 张艳玲
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-04-25
Anticipated expiration: 2032-12-23

Abstract

The utility model belongs to the technical field of machining and provides a cantilever crane machining positioning tool, which comprises a positioning base, a first posture adjusting mechanism and a second posture adjusting mechanism, wherein the first posture adjusting mechanism comprises a first pushing unit and a second pushing unit which are respectively arranged at two longitudinal ends of the positioning base and can transversely move, the first pushing unit and the second pushing unit are respectively used for transversely pushing two ends of a cantilever crane, the second posture adjusting mechanism comprises a first lifting unit and a second lifting unit which are transversely arranged on the positioning base at intervals, the first lifting unit and the second lifting unit can lift up and down and are respectively used for lifting the bottom of the cantilever crane from two transverse sides, and the rapid automatic positioning of the cantilever crane posture is realized through the first posture adjusting mechanism and the second posture adjusting mechanism.

Description

Arm support processing and positioning tool

Technical Field

The utility model belongs to the technical field of machining, and particularly relates to a cantilever crane machining positioning tool.

Background

The premise of realizing the automatic processing of the pump truck arm support is how to realize the automatic positioning of the arm support before the processing. Because the cantilever crane has characteristics such as model many, size difference is big, shape is irregular, leads to the automatic positioning demand of the cantilever crane of current automatic location frock difficult compatible multiple model simultaneously, consequently still adopts manual scribing and manual clamping's mode to fix a position the gesture and the processing position of cantilever crane in the current trade, and this kind of mode is not only inefficiency, the operation degree of difficulty is big, and the human cost of throwing into is higher simultaneously, and along with market competition is more and more violent, and the processing mode of manual positioning is presumed to be eliminated by the market.

Disclosure of Invention

Aiming at the defects or shortcomings, the utility model provides a cantilever crane processing and positioning tool, which aims to solve the technical problem that the existing automatic equipment is difficult to be compatible with automatic positioning before processing of cantilever cranes of various types, so that the automatic processing of the cantilever crane is difficult to realize.

In order to achieve the above-mentioned purpose, the utility model provides a boom processing and positioning tool, wherein the boom processing and positioning tool comprises a positioning base, a first posture adjusting mechanism and a second posture adjusting mechanism, the first posture adjusting mechanism comprises a first pushing unit and a second pushing unit which are respectively arranged at two longitudinal ends of the positioning base and can transversely move, the first pushing unit and the second pushing unit are respectively used for transversely pushing two ends of a boom, the second posture adjusting mechanism comprises a first lifting unit and a second lifting unit which are transversely arranged on the positioning base at intervals, and the first lifting unit and the second lifting unit can lift up and down and are respectively used for lifting the bottom of the boom from two transverse sides.

In the embodiment of the utility model, the first sliding rail and the second sliding rail which extend transversely are respectively arranged at the two longitudinal ends of the positioning base, the first pushing unit comprises a first transverse servo oil cylinder and a second transverse servo oil cylinder which are connected to the first sliding rail in a sliding clamping mode and are arranged at intervals, and the first transverse servo oil cylinder and the second transverse servo oil cylinder are respectively provided with a first pushing part protruding transversely outwards.

In the embodiment of the utility model, the second pushing unit comprises a third transverse servo cylinder and a fourth transverse servo cylinder which are movably clamped on the second sliding rail and are arranged at intervals, and second pushing parts protruding inwards transversely are respectively arranged on the third transverse servo cylinder and the fourth transverse servo cylinder.

In the embodiment of the utility model, the first lifting unit and the second lifting unit are respectively vertically arranged servo lifting cylinders, and the servo lifting cylinders are used for lifting the arm support from the two lateral sides of the bottom of the arm support.

In the embodiment of the utility model, the arm rest machining and positioning tool further comprises a clamping mechanism arranged on the positioning base, wherein the clamping mechanism comprises a side clamping unit capable of transversely moving and used for clamping the arm rest from two transverse sides, a floating support unit capable of moving up and down and used for abutting against the bottom surface of the arm rest, and a pressing unit capable of moving up and down and used for abutting against the top surface of the arm rest.

In an embodiment of the utility model, the side clamping unit comprises a first fixing seat transversely arranged on the positioning base, and a first side clamping cylinder and a second side clamping cylinder transversely arranged on the first fixing seat at intervals, wherein a clamping space is formed between the first side clamping cylinder and the second side clamping cylinder, and telescopic ends of the first side clamping cylinder and the second side clamping cylinder are arranged towards each other.

In an embodiment of the utility model, the floating support unit comprises a floating support cylinder arranged on the positioning base, wherein the floating support cylinder can extend and retract up and down and is used for supporting the bottom surface of the arm support.

In the embodiment of the utility model, the pressing unit comprises a second fixing seat which is vertically arranged and a pressing cylinder which is arranged at the top end of the second fixing seat and can stretch up and down, wherein the pressing cylinder is provided with a pressing part which horizontally extends out and is used for pressing the top surface of the arm support.

In the embodiment of the utility model, the positioning base comprises a base body, a first tray, a second tray and a third tray, wherein the first tray and the second tray are respectively arranged at two longitudinal ends of the base body, the third tray is arranged between the first tray and the second tray, and at least one of a side clamping unit, a floating supporting unit and a pressing unit is respectively arranged on the first tray, the second tray and the third tray.

In the embodiment of the utility model, the arm support processing and positioning tool further comprises a guide mechanism, wherein the guide mechanism comprises a first guide column and a second guide column which are transversely arranged at intervals, and the top ends of the first guide column and the second guide column are provided with guide surfaces which incline inwards from top to bottom.

Through the technical scheme, the arm support processing and positioning tool provided by the embodiment of the utility model has the following beneficial effects:

when the cantilever crane positioning device is used, firstly, the cantilever crane of the pump truck is hoisted to the positioning base, then the two longitudinal ends of the cantilever crane are transversely pushed by the first pushing unit and the second pushing unit in the first gesture adjusting mechanism to adjust the transverse position and the longitudinal deflection angle of the cantilever crane, the two transverse sides of the cantilever crane are lifted by the first lifting unit and the second lifting unit in the second gesture adjusting mechanism to adjust the height and the left-right deflection angle of the cantilever crane, so that the cantilever crane is adjusted to a preset gesture, and the processing position of the cantilever crane can be directly positioned according to preset parameters under the preset gesture. The positioning process of the first posture adjusting mechanism and the second posture adjusting mechanism can be automatically executed by combining a control program, the first posture adjusting mechanism and the second posture adjusting mechanism can be movably arranged, and the positions of the movably arranged first posture adjusting mechanism and second posture adjusting mechanism can be adaptively adjusted according to the length of the arm support, so that the compatibility of the tool is improved.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide an understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a boom machining positioning tool according to an embodiment of the utility model;

FIG. 2 is a schematic structural view of a first part of a boom machining positioning tool according to an embodiment of the utility model;

FIG. 3 is a schematic view of a second part of a boom machining positioning tool according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a third part of a boom processing positioning tool according to an embodiment of the present utility model;

description of the reference numerals

1. First slide rail of positioning base 11

12. Second slide rail 13 seat body

14. First tray 15 second tray

16. First posture adjusting mechanism of third tray 2

21. First pushing unit 211 first transverse servo cylinder

212. First pushing part of second transverse servo oil cylinder 213

22. Third transverse servo cylinder of second pushing unit 221

222. Second pushing part of fourth transverse servo cylinder 223

3. Second posture adjusting mechanism 31 first lifting unit

32. Clamping mechanism of second lifting unit 4

41. First fixing seat of side clamping unit 411

412. First side clamping cylinder 413 second side clamping cylinder

42. Floating support unit 421 floating support cylinder

43. Second fixing seat of pressing unit 431

432. Compressing part of compressing cylinder 433

5. First guide post of guide mechanism 51

52. Second guide post

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present utility model.

The boom machining and positioning tool is described below with reference to the accompanying drawings.

The utility model provides a boom machining and positioning tool, as shown in fig. 1, 2 and 3, wherein the boom machining and positioning tool comprises:

positioning a base 1;

the first posture adjusting mechanism 2 comprises a first pushing unit 21 and a second pushing unit 22 which are respectively arranged at two longitudinal ends of the positioning base 1 and can transversely move, wherein the first pushing unit 21 and the second pushing unit 22 are used for respectively transversely pushing two ends of the arm support; and

the second posture adjusting mechanism 3 comprises a first lifting unit 31 and a second lifting unit 32 which are arranged on the positioning base 1 at intervals in the transverse direction, wherein the first lifting unit 31 and the second lifting unit 32 can lift up and down and are respectively used for lifting the bottom of the arm support from two transverse sides.

When the cantilever crane positioning device is used, firstly, the cantilever crane of the pump truck is hoisted to the positioning base 1, then, the two longitudinal ends of the cantilever crane are transversely pushed by the first pushing unit 21 and the second pushing unit 22 in the first gesture adjusting mechanism 2 to adjust the transverse position and the longitudinal deflection angle of the cantilever crane, the two transverse sides of the cantilever crane are lifted by the first lifting unit 31 and the second lifting unit 32 in the second gesture adjusting mechanism 3 to adjust the height and the left deflection angle of the cantilever crane, so that the cantilever crane is adjusted to a preset gesture, and the processing position of the cantilever crane can be directly positioned according to preset parameters under the preset gesture. The positioning process of the first posture adjusting mechanism 2 and the second posture adjusting mechanism 3 can be automatically executed by combining a control program, the first posture adjusting mechanism 2 and the second posture adjusting mechanism 3 can be movably arranged, and the flexibly arranged first posture adjusting mechanism 2 and second posture adjusting mechanism can carry out position adaptability adjustment according to the length of the arm support, so that the compatibility of the tool is improved. In conclusion, the arm support machining and positioning tool provided by the utility model has high compatibility, can realize automatic positioning of arm supports of various types, and has simple operation of the whole positioning process and high positioning efficiency.

It should be noted that, the main purpose of the arm support posture positioning is to determine the positioning reference. When the arm support is hoisted to the positioning base 1, the positioning reference is difficult to determine due to uncertainty of the posture and the position, the posture of the arm support can be adjusted to the preset posture through the arm support processing positioning tool, the positioning reference of the arm support can be directly determined according to preset parameters under the preset posture, and the processing position of the arm support can be easily positioned after the positioning reference is determined.

As shown in fig. 2 and 3, in the embodiment of the present utility model, the two longitudinal ends of the positioning base 1 are respectively provided with a first sliding rail 11 and a second sliding rail 12 that extend transversely, the first pushing unit 21 includes a first transverse servo cylinder 211 and a second transverse servo cylinder 212 that are slidably clamped on the first sliding rail 11 and are arranged at intervals, and the first transverse servo cylinder 211 and the second transverse servo cylinder 212 are respectively provided with a first pushing portion 213 protruding transversely outwards. The cantilever crane includes the first articulated end that is the double-lug structure and the second articulated end of single elbow structure, the second articulated end is used for articulating with the first articulated end of next cantilever crane, in the articulated process, the mating surface of first articulated end is two medial surfaces of double-lug structure, the mating surface of second articulated end is two lateral surfaces of single elbow structure, the mating surface of two articulated ends can directly influence the assembly of cantilever crane, therefore when the cantilever crane is processed, the mating surface of two articulated ends is preferably adopted as the benchmark of gesture adjustment, specifically, on first articulated end, two medial surfaces of double-lug structure are pushed respectively through first pushing part 213 on first horizontal servo cylinder 211 and the second horizontal servo cylinder 212, thereby realize the position adjustment of cantilever crane first articulated end, the position adjustment of second articulated end is cooperated again, thereby realize horizontal position and vertical deflection angle's regulation. Of course, other positions of the arm support can be used as references for posture adjustment, and the oil cylinder can be replaced by an air cylinder, an electric cylinder and the like.

As shown in fig. 3, in the embodiment of the present utility model, the second pushing unit 22 includes a third lateral servo cylinder 221 and a fourth lateral servo cylinder 222 movably clamped on the second slide rail 12 and disposed at intervals, and second pushing portions 223 protruding laterally and inwardly are respectively disposed on the third lateral servo cylinder 221 and the fourth lateral servo cylinder 222. As described above, the second pushing portions 223 on the third and fourth

lateral servo cylinders

221 and 222 respectively push the two mating surfaces of the second hinge end, and then cooperate with the position adjustment of the first hinge end, thereby realizing the adjustment of the lateral position and the longitudinal deflection angle of the boom.

As shown in fig. 2, in the embodiment of the present utility model, the first lifting unit 31 and the second lifting unit 32 are respectively vertically arranged servo lifting cylinders, and the servo lifting cylinders are used for lifting the boom from two lateral sides of the bottom of the boom. After the arm frame is placed on the positioning base 1, due to the special-shaped structure at the bottom of the arm frame or the reason of placing the arm frame, the heights of the two lateral sides of the arm frame can be different, so that the arm frame can vertically swing, the heights of the two lateral sides of the arm frame can be respectively adjusted through the first lifting unit 31 and the second lifting unit 32, and the height and the vertical swing angle of the arm frame can be adjusted.

As shown in fig. 1, 2 and 3, in the embodiment of the present utility model, the boom machining positioning fixture further includes a clamping mechanism 4 provided on the positioning base 1, the clamping mechanism 4 including a side clamping unit 41 capable of moving laterally and for clamping the boom from both lateral sides, a floating support unit 42 capable of moving up and down and for abutting against the bottom surface of the boom, and a pressing unit 43 capable of moving up and down and for abutting against the top surface of the boom. After the arm support posture is positioned, the side clamping unit 41, the floating supporting unit 42 and the pressing unit 43 clamp the two sides, the bottom and the top of the arm support, so that the arm support posture can be ensured to be fixed.

As shown in fig. 2, 3 and 4, in the embodiment of the present utility model, one embodiment of the side clamping unit 41 may include a first fixing seat 411 transversely disposed on the positioning base 1, and a first side clamping cylinder 412 and a second side clamping cylinder 413 transversely disposed on the first fixing seat 411 at intervals, a clamping space is formed between the first side clamping cylinder 412 and the second side clamping cylinder 413, the telescopic ends of the first side clamping cylinder 412 and the second side clamping cylinder 413 are disposed toward each other, and the telescopic ends of the first side clamping cylinder 412 and the second side clamping cylinder 413 are protruded toward each other, so that clamping of both sides of the arm support in the transverse direction can be performed, however, the side clamping unit 41 may also be other embodiments, such as a screw-coupled slider pushing.

As shown in fig. 2, 3 and 4, in the embodiment of the present utility model, one of the embodiments of the floating support unit 42 may be a floating support cylinder 421 provided on the positioning base 1, the floating support cylinder 421 being capable of extending and contracting up and down and supporting the bottom surface of the boom. Because the bottom of the arm support is a non-flat surface, and the bottom profiles of the arm supports of different types are different, stable support on the bottom of the arm support is ensured by lifting the floating support cylinders 421 up and down, and meanwhile, the number of the floating support cylinders 421 is multiple, and the plurality of floating support cylinders 421 can better support the arm support. Of course, the floating support unit 42 may have other structures, such as a cushion block that can be increased or decreased.

As shown in fig. 2, 3 and 4, in the embodiment of the present utility model, the pressing unit 43 may be a second fixing seat 431 vertically disposed and a pressing cylinder 432 disposed at a top end of the second fixing seat 431 and capable of extending up and down, where the pressing cylinder 432 is provided with a pressing portion 433 extending horizontally, and the pressing portion 433 is used for pressing a top surface of the arm frame. Through setting up the compressing tightly part 433 that the level stretches out to can carry out the butt to the upper end of cantilever crane better and compress tightly, preferably, compressing tightly part 433 sets up to can the horizontal rotation, thereby can dodge when cantilever crane hoist and mount are put.

As shown in fig. 1 to 4, in the embodiment of the present utility model, the positioning base 1 includes a base body 13, first and

second trays

14 and 15 respectively provided at both longitudinal ends of the base body 13, and a third tray 16 provided between the first and

second trays

14 and 15, and at least one of side clamping units 41, floating support units 42, and pressing units 43 is provided on each of the first, second, and

third trays

14, 15, 16. The clamping mechanism 4 on the first tray 14 is mainly used for clamping and fixing the first hinged end of the arm support, the clamping mechanism 4 on the second tray 15 is mainly used for clamping the second hinged end of the arm support, the third tray 16 is mainly used for clamping the middle part of the arm support, and in order to ensure the firmness of clamping the arm support, the first tray 14, the second tray 15 and the third tray 16 are preferably provided with two or three of the side clamping units 41, the floating supporting units 42 and the pressing units 43 at the same time, and the number of the side clamping units 41, the floating supporting units 42 and the pressing units 43 on each tray can be multiple.

As shown in fig. 3, an inclined surface needs to be provided on the second tray 15, and a floating support unit 42 is provided on the inclined surface, so that the arc-shaped part in the single-elbow structure of the second hinge end of the arm support can be better supported by the floating support unit 42 on the inclined surface.

As shown in fig. 1, 2 and 3, in the embodiment of the present utility model, the first posture adjustment mechanism 2 and the second posture adjustment mechanism 3 are preferably disposed on the first tray 14 and the second tray 15, and the first tray 14 and the second tray 15 are preferably disposed movably, so that the positions of the first posture adjustment mechanism 2 and the second posture adjustment mechanism 3 can be adaptively adjusted according to the length of the arm support by moving the positions of the first tray 14 and the second tray 15.

As shown in fig. 2, in the embodiment of the present utility model, the boom processing positioning tool further includes a guiding mechanism 5, where the guiding mechanism 5 includes a first guiding post 51 and a second guiding post 52 that are laterally spaced apart, and top ends of the first guiding post 51 and the second guiding post 52 are provided with guiding surfaces that incline inwards from top to bottom. By arranging the guide post, the arm support is convenient to place on the positioning base 1.

In the embodiment of the utility model, the arm support processing and positioning tool further comprises a scanning mechanism, wherein the scanning mechanism can longitudinally move and carry out coordinate point scanning on the characteristics of the arm support, so that the longitudinal position of the corresponding characteristics of the arm support is determined. Wherein the scanning mechanism may be in the form of a multi-axis motion mobile module plus a laser profiler.

In the embodiment of the utility model, the positioning base 1 can be hoisted onto the processing equipment along with the arm support, and the advantage of the arrangement is that a plurality of sets of arm support processing positioning tools can be arranged, so that the processing equipment can process the arm support positioned before simultaneously while the arm support is positioned by the follow-up tools.

In the embodiment of the utility model, the cylinder can be an oil cylinder, an air cylinder, an electric cylinder and the like, and can be arranged correspondingly according to the load, and after the arm support is hoisted to the positioning base 1, the pre-centering operation can be performed first, so that the amplitude of posture adjustment is reduced.

In summary, the arm support processing and positioning tool provided by the utility model not only can realize automatic positioning of the arm support posture and greatly increase the positioning efficiency, but also can be compatible with arm supports of various types, and can get rid of dependence on people in the positioning process, thereby effectively reducing the labor cost input in production.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The utility model provides a cantilever crane processing location frock which characterized in that, cantilever crane processing location frock includes:

a positioning base (1);

the first posture adjusting mechanism (2) comprises a first pushing unit (21) and a second pushing unit (22) which are respectively arranged at two longitudinal ends of the positioning base (1) and can move transversely, and the first pushing unit (21) and the second pushing unit (22) are used for respectively pushing two ends of the arm support transversely; and

the second posture adjusting mechanism (3) comprises a first lifting unit (31) and a second lifting unit (32) which are transversely arranged on the positioning base (1) at intervals, wherein the first lifting unit (31) and the second lifting unit (32) can lift up and down and are respectively used for lifting the bottom of the arm support from the two transverse sides.

2. The boom machining positioning tool according to claim 1, wherein a first sliding rail (11) and a second sliding rail (12) which extend transversely are respectively arranged at two longitudinal ends of the positioning base (1), the first pushing unit (21) comprises a first transverse servo cylinder (211) and a second transverse servo cylinder (212) which are connected to the first sliding rail (11) in a sliding clamping mode and are arranged at intervals, and a first pushing part (213) protruding transversely outwards is respectively arranged on the first transverse servo cylinder and the second transverse servo cylinder (212).

3. The boom machining positioning tool according to claim 2, wherein the second pushing unit (22) comprises a third transverse servo cylinder (221) and a fourth transverse servo cylinder (222) movably clamped on the second sliding rail (12) and arranged at intervals, and second pushing parts (223) protruding inwards transversely are respectively arranged on the third transverse servo cylinder (221) and the fourth transverse servo cylinder (222).

4. The boom machining positioning tool according to claim 1, wherein the first lifting unit (31) and the second lifting unit (32) are respectively vertically arranged servo lifting cylinders, and the servo lifting cylinders are used for lifting the boom from two lateral sides of the bottom of the boom.

5. The boom machining positioning tool according to claim 1, further comprising a clamping mechanism (4) arranged on the positioning base (1), wherein the clamping mechanism (4) comprises a side clamping unit (41) capable of moving laterally and used for clamping the boom from two lateral sides, a floating support unit (42) capable of moving up and down and used for abutting the bottom surface of the boom, and a pressing unit (43) capable of moving up and down and used for abutting the top surface of the boom.

6. The boom machining positioning tool according to claim 5, wherein the side clamping unit (41) comprises a first fixing seat (411) transversely arranged on the positioning base (1) and a first side clamping cylinder (412) and a second side clamping cylinder (413) transversely arranged on the first fixing seat (411) at intervals, a clamping space is formed between the first side clamping cylinder (412) and the second side clamping cylinder (413), and telescopic ends of the first side clamping cylinder (412) and the second side clamping cylinder (413) are arranged towards each other.

7. The boom machining positioning tool according to claim 5, wherein the floating support unit (42) comprises a floating support cylinder (421) arranged on the positioning base (1), and the floating support cylinder (421) can extend and retract up and down and is used for supporting the bottom surface of the boom.

8. The boom machining positioning tool according to claim 5, wherein the pressing unit (43) comprises a second fixing seat (431) which is vertically arranged and a pressing cylinder (432) which is arranged at the top end of the second fixing seat (431) and can stretch up and down, a pressing part (433) which horizontally stretches out is arranged on the pressing cylinder (432), and the pressing part (433) is used for pressing the top surface of the boom.

9. The boom machining positioning tool according to claim 5, wherein the positioning base (1) comprises a base body (13), a first tray (14) and a second tray (15) respectively arranged at two longitudinal ends of the base body (13), and a third tray (16) arranged between the first tray (14) and the second tray (15), wherein at least one of the side clamping unit (41), the floating supporting unit (42) and the pressing unit (43) is respectively arranged on the first tray (14), the second tray (15) and the third tray (16).

10. The boom machining positioning tool according to any one of claims 1 to 9, further comprising a guiding mechanism (5), wherein the guiding mechanism (5) comprises a first guiding post (51) and a second guiding post (52) which are arranged at intervals in the transverse direction, and top ends of the first guiding post (51) and the second guiding post (52) are provided with guiding surfaces which incline inwards from top to bottom.