CN214770584U

CN214770584U - Fixing device for machining underframe of crane

Info

Publication number: CN214770584U
Application number: CN202121392308.7U
Authority: CN
Inventors: 方德威
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Construction Crane Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Construction Crane Co Ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-11-19
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a fixing device for processing the underframe of a crane, which comprises a base (100) and a positioning piece (200); the base (100) is fixedly arranged on the table top of the processing machine tool and used for providing support for the chassis (300); the positioning piece (200) is configured to position the chassis (300) on the base (100) and enable form and position tolerance formed between the mounting surface of the chassis (300) and a plane defined by four trunnion holes to meet preset requirements. The utility model discloses a fixing device can guarantee that the installation face of the chassis after the processing is qualified.

Description

Fixing device for machining underframe of crane

Technical Field

The utility model relates to a mounting fixture technical field specifically relates to a fixing device that is used for chassis processing of hoist.

Background

The lifting mechanism of the crane is used as an actuating mechanism of the crane and has the function of lifting workpieces. The hoisting mechanism mainly comprises an underframe, a motor, a speed reducer, a steel wire rope winding drum and the like. The underframe is used as a bearing platform of a motor, a speed reducer and a steel wire rope reel and is connected with the balance arm, and the requirement on geometric tolerance between the installation surface of the underframe and the trunnion of the underframe is extremely high.

Because the underframe is a truss structure and needs to be welded and then integrally machined, the existing underframe machining steps are as follows: processing an trunnion hole, welding the trunnion plate and the underframe, milling the installation surface of the underframe and drilling. However, after the trunnion plate and the underframe are welded, the following problems occur when the mounting surface is directly machined using the bottom surface of the underframe as a reference for milling the mounting surface: since the bottom surface of the underframe is an unprocessed surface, there is no positional relationship between the mounting surface of the underframe and the bottom surface of the underframe, so that the requirement for form and position tolerance between the mounting surface of the underframe and the trunnion of the underframe cannot be ensured, and the mounting surface after processing is unqualified.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem that prior art exists, provide a fixing device for chassis processing of hoist, this fixing device can guarantee that the installation face of the chassis after the processing is qualified.

In order to achieve the above object, the present invention provides a fixing device for processing an underframe of a crane, which comprises a base and a positioning member; the base is fixedly arranged on the table-board of the processing machine tool and used for providing support for the underframe; the positioning piece is configured to position the chassis on the base and enable form and position tolerance formed between the mounting surface of the chassis and a plane defined by the four trunnion holes to meet preset requirements.

Optionally, the positioning element is connected with the bottom frame, the base comprises equal-height blocks, and the equal-height blocks are provided with installation parts for installing the positioning element.

Optionally, the equal-height blocks comprise V-shaped grooves serving as the installation parts, the positioning piece comprises a mandrel with a circular cross section, one end of the mandrel is connected with the ear shaft hole of the bottom frame, and the other end of the mandrel is erected in the V-shaped grooves.

Optionally, the contoured block includes a receiving slot for receiving a trunnion plate of the chassis.

Optionally, the equal-height block includes two vertical plates disposed at an interval, the two vertical plates are respectively provided with the V-shaped grooves correspondingly, and the accommodating groove is formed between the two vertical plates.

Optionally, the base includes a base fixedly disposed on the table-board of the processing machine tool, and the equal-height blocks are fixedly disposed on the base.

Optionally, one end of the mandrel connected with the ear canal hole is provided with a conical end part.

Optionally, the positioning element includes a stop member, and the stop member is disposed along the circumferential direction of the mandrel and extends outward along the radial direction of the mandrel so as to be capable of stopping at the trunnion hole.

Optionally, the number of the bases and the number of the positioning pieces are four, the bases are arranged in a rectangular shape, and the four positioning pieces and the four bases are respectively in one-to-one positioning connection.

Optionally, the fixing device for machining the underframe of the crane comprises a pressing block for pressing the underframe against the base.

Through the technical scheme, the positioning piece can position the chassis on the base and enable form and position tolerances formed between the mounting surface of the chassis and the planes defined by the four trunnion holes to meet the preset requirements, so that the qualified mounting surface of the processed chassis can be ensured.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

Fig. 1 is a schematic view of a fixing device for processing an underframe of a crane according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

fig. 4 is a schematic view of the equal-height blocks of the fixing device for machining the underframe of the crane according to the present invention;

fig. 5 is a schematic view of the mandrel of the fixing device for machining the underframe of the crane according to the present invention.

Description of the reference numerals

100-base, 110-contour, 111-V-groove, 112-receiving groove, 113-riser, 120-base, 200-positioning element, 210-mandrel, 211-taper end, 220-stop, 300-base, 310-trunnion plate

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 to 5, the fixing device for machining the underframe of the crane of the present invention includes a base 100 and a positioning member 200; the base 100 is fixedly arranged on the table top of the processing machine tool and used for providing support for the base frame 300; the positioning member 200 is configured to position the chassis 300 on the base 100 and to enable a form and position tolerance formed between a mounting surface of the chassis 300 and a plane defined by the four trunnion holes to meet a preset requirement.

The utility model discloses in, because the setting element 200 can with chassis 300 is located on the base 100 and makes the geometric tolerances who forms between the installation face of chassis 300 and the plane that four trunnion holes are injectd accord with the preset requirement, consequently, can guarantee that the installation face of the chassis after the processing is qualified.

It should be understood that the base 100 can be positioned with the positioning member 200 in various ways, and in one embodiment of the present invention, the positioning member 200 is connected with the bottom frame 300, the base 100 includes an equal-height block 110, and the equal-height block 110 has a mounting portion for mounting the positioning member 200.

Specifically, as shown in fig. 4 and 5, the contour block 110 includes a V-shaped groove 111 as the mounting portion, the positioning member 200 includes a mandrel 210 having a circular cross section, one end of the mandrel 210 is connected to the trunnion hole of the bottom chassis 300, and the other end of the mandrel is installed in the V-shaped groove 111, so that the mandrel 210 is installed in the V-shaped groove 111 and the inclination angle of the mandrel 210 is adjusted, thereby achieving the purpose of adjusting the form and position tolerance formed between the mounting surface of the bottom chassis 300 and the plane defined by the four trunnion holes.

In order to make the bottom frame 300 be supported more stably, in an embodiment of the present invention, the number of the base 100 and the positioning members 200 is four, four the base 100 is arranged in a rectangular shape, and four the positioning members 200 and four the bases 100 are respectively connected in a one-to-one manner. Of course, the number of the base 100 and the positioning members 200 may have other values, as long as the base 100 and the positioning members 200 are correspondingly positioned and connected one to one.

In the above embodiment, since the two groove walls of the V-shaped groove 111 are both of a planar structure and the mandrel 210 is of a cylindrical structure, when the placement angle of the chassis 300 needs to be adjusted, the height of the trunnion hole of the chassis 300 connected to the mandrel 210 can be raised and lowered along the vertical direction only by replacing mandrels 210 with different diameters, so as to achieve the purpose of adjusting the placement angle of the chassis 300.

In order to prevent the trunnion plate 310 of the bottom frame 300 from touching the contour block 110 and affecting positioning when the bottom frame 300 is positioned, in an embodiment of the present invention, the contour block 110 includes a receiving groove 112 for receiving the trunnion plate 310 of the bottom frame 300.

It should be understood that the contour block 110 can be designed in various forms, for example, the contour block 110 can include two vertical plates 113 spaced apart from each other, the two vertical plates 113 are respectively provided with the V-shaped grooves 111 corresponding to each other, and the accommodating groove 112 is formed between the two vertical plates 113. This provides the advantage of a simpler overall construction and manufacturing of the block 110, since the accommodation grooves 112 and the V-grooves 111 are realized by only two risers 113, and the mandrel 210 is more firmly supported by the mounting of the mandrel 210 in the two V-grooves.

In order to make the base 100 support the positioning member 200 more stably, in an embodiment of the present invention, the base 100 includes a base 120 fixedly disposed on the table top of the processing machine tool, and the equal-height blocks 110 are fixedly disposed on the base 120. Specifically, the base 120 has a larger cross section than the base 100, and the base 120 has a larger bottom surface, so that the base can be more stably disposed on the top of the processing machine tool, and the positioning member 200 can be more stably supported by the equal-height block 110.

In order to facilitate the smooth insertion of the stem 210 into the trunnion hole to achieve the connection with the bottom bracket 300, in an embodiment of the present invention, the end of the stem 210 connected with the trunnion hole has a tapered end 211.

In order to prevent the mandrel 210 from moving excessively and coming out of the other end of the trunnion hole when the mandrel 210 is inserted into the trunnion hole, in an embodiment of the present invention, the positioning member 200 includes a stop member 220, and the stop member 220 is disposed along a circumferential direction of the mandrel 210 and extends radially outward of the mandrel 210 to be able to stop the trunnion hole.

In addition, the fixing device for machining the underframe of the crane comprises a pressing block for pressing the underframe 300 on the base 100.

The utility model discloses a fixing device is fixed during chassis 300, through V-arrangement groove 111 with the cooperation of dabber 210 is realized right chassis 300's location to guarantee the position degree relation of the plane that four trunnion holes are injectd and the machine tool mesa, ensure after processing the installation face of chassis 300 and the geometric tolerances between four trunnions meet the requirements. When different underframe is fixed, only the mandrels 210 with different diameters need to be replaced, the adjusting function in the vertical direction in the V-shaped groove can be realized, and therefore the qualified installation surface of the machined underframe is better ensured.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide a solution of the present invention with a plurality of simple modifications to avoid unnecessary repetition, and the present invention is not described separately for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.

Claims

1. A fixing device for the undercarriage processing of a crane is characterized by comprising a base (100) and a positioning piece (200);

the base (100) is fixedly arranged on the table top of the processing machine tool and used for providing support for the chassis (300);

the positioning piece (200) is configured to position the chassis (300) on the base (100) and enable form and position tolerance formed between the mounting surface of the chassis (300) and a plane defined by four trunnion holes to meet preset requirements.

2. The fixture for undercarriage processing of a crane according to claim 1, wherein the positioning member (200) is connected to the undercarriage (300), and the base (100) comprises an equal-height block (110), and the equal-height block (110) has a mounting portion for mounting the positioning member (200).

3. The fixing device for machining the underframe of the crane as recited in claim 2, wherein the contour block (110) comprises a V-shaped groove (111) as the mounting part, the positioning member (200) comprises a mandrel (210) with a circular cross section, one end of the mandrel (210) is connected with an trunnion hole of the underframe (300), and the other end of the mandrel is erected in the V-shaped groove (111).

4. Fixing device for undercarriage processing of a crane according to claim 3, characterized in that the contour block (110) comprises a receiving groove (112) for receiving a trunnion plate (310) of the undercarriage (300).

5. The fixture for machining the underframe of a crane according to claim 4, wherein the contour block (110) comprises two vertical plates (113) arranged at intervals, the two vertical plates (113) are respectively provided with the V-shaped grooves (111) correspondingly, and the accommodating grooves (112) are formed between the two vertical plates (113).

6. The fixture for undercarriage machining of a crane according to claim 3, wherein the base (100) comprises a base (120) fixedly arranged on the machine tool table, and the contour block (110) is fixedly arranged on the base (120).

7. The fixture for undercarriage processing of a crane according to claim 3, wherein the end of the mandrel (210) connected to the trunnion hole has a tapered end (211).

8. The fixture for undercarriage processing of a crane according to claim 3, wherein the positioning member (200) comprises a stop member (220), the stop member (220) being disposed along a circumferential direction of the mandrel (210) and extending radially outward of the mandrel (210) to be capable of stopping at the trunnion hole.

9. The fixing device for machining the underframe of the crane according to claim 1, wherein the number of the bases (100) and the positioning members (200) is four, the four bases (100) are arranged in a rectangular shape, and the four positioning members (200) are respectively connected with the four bases (100) in a one-to-one corresponding positioning manner.

10. The fixture for undercarriage processing of a crane according to claim 1, wherein the fixture for undercarriage processing of a crane comprises a press block for pressing the undercarriage (300) against the base (100).