CN212799321U - Quick accurate alignment device of steel crane beam track clamp plate bolt round hole central line - Google Patents

Abstract

The utility model relates to a quick and accurate alignment device for a central line of a bolt row hole of a steel crane beam rail pressing plate, which comprises an alignment plate, an L-shaped connecting plate, a fastening screw, a screw and a pressing plate; the number of the L-shaped connecting plates is two, vertical plates of the two L-shaped connecting plates are connected to one side of the aligning plate through fastening screws respectively, the fastening screws are loosened, the two L-shaped connecting plates can move left and right on one side of the aligning plate, and the distance between the two L-shaped connecting plates is adjusted; the distance between the two L-shaped connecting plates is the width of a web plate of the crane beam; the two pressure plates are respectively positioned on the upper parts of the transverse plates of the two L-shaped connecting plates and are fixed through screws, and the distance between the pressure plate and the aligning plate is equal to the thickness of the crane beam wing plate. The utility model discloses realize quick, the accurate alignment of steel crane roof beam track clamp plate bolt round pin central line position, established the datum line for bolt hole high accuracy location, can improve drilling positioning quality and efficiency, reduction in production cost.

Description

Quick accurate alignment device of steel crane beam track clamp plate bolt round hole central line

Technical Field

The utility model relates to a steel construction preparation installation field, specific quick accurate alignment device of steel crane roof beam track clamp plate bolt round hole central line that says so.

Background

The travelling crane rail of the steel crane beam is positioned and pressed tightly by two rows of pressing plate fastening bolts arranged at intervals, the positioning precision of the central line of the bolt row holes determines the subsequent drilling quality, and further determines the rail installation and the travelling crane operation quality; the positioning efficiency determines the manufacturing progress of the steel crane beam and influences the manufacturing cost. Due to the influence of errors in the manufacturing process, the determination of the position of the central line of the bolt row hole of the rail pressing plate is an important and error-prone process in the manufacturing and mounting process of the steel crane beam, and the condition generally exists in the industry.

According to investigation, in the manufacturing of the steel crane beam, most manufacturing plants adopt a pay-off method for positioning by firstly dividing a reference line in the width direction of an upper flange plate of the crane beam by using a steel plate ruler and then determining the position of a central line of a bolt row hole by measuring the distance between the central line of the bolt hole and the reference line, the positioning precision and the positioning efficiency completely depend on the personal quality and the handling degree of technicians and professional workers executing the work task, and the volatility of lofting data is large due to the difference of different persons or the same person in different time periods and the like, so that the huge working procedure quality detection, checking, acceptance and correction workload is caused, and the manufacturing progress is delayed and the manufacturing cost is increased.

Therefore, how to position the center lines of the bolt row holes at high precision becomes a difficult point and a pain point in the manufacturing and mounting links of the steel crane beam.

Disclosure of Invention

The utility model aims at overcoming prior art's defect, provide a quick accurate alignment device of steel crane roof beam track clamp plate bolt round spot central line, can realize quick, the accurate alignment of steel crane roof beam track clamp plate bolt round spot central line position.

In order to solve the technical problem, the utility model discloses a realize like this:

a quick and accurate alignment device for the central line of a bolt hole row of a steel crane beam rail pressing plate comprises an alignment plate, an L-shaped connecting plate, fastening screws, screws and a pressing plate;

the number of the L-shaped connecting plates is two, vertical plates of the two L-shaped connecting plates are connected to one side of the aligning plate through fastening screws respectively, the fastening screws are loosened, the two L-shaped connecting plates can move left and right on one side of the aligning plate, and the distance between the two L-shaped connecting plates is adjusted; the distance between the two L-shaped connecting plates is the width of a web plate of the crane beam;

the two pressure plates are respectively positioned on the upper parts of the transverse plates of the two L-shaped connecting plates and are fixed through screws, and the distance between the pressure plate and the aligning plate is equal to the thickness of the crane beam wing plate.

The utility model has the advantages that: the structural characteristics, the manufacturing process and the installation process characteristics of the crane beam are fully considered, and the web plate is centered, the axial symmetry center line of the crane beam and the center line of the bolt row hole are quickly and accurately aligned through a specially designed alignment die. By using the device, the paying-off positioning work is greatly simplified, the positioning accuracy and efficiency are greatly improved, convenience is provided for further ensuring the positioning accuracy of the bolt hole, the manufacturing process is optimized, the used method principle is simple, the used special tool is novel in design thought, the product can be shaped and produced in quantity, the processing and assembly are simple, the use is convenient and fast, and the quality is reliable;

as a new quick and accurate alignment device for the central line position of the bolt row holes of the steel crane beam rail pressing plate, the manufacturing process of the crane beam can be changed, the alignment quality is improved, and the organization process and the management mode of quality inspection, procedure acceptance and product evaluation are changed;

the method is successfully applied, can improve the alignment precision and efficiency of the crane beam track pressing plate bolt row hole center line position, ensures the manufacturing quality, accelerates the manufacturing progress, reduces the manufacturing cost and has obvious effect.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the direction A-A in FIG. 1.

Fig. 3 is a schematic view of direction B-B in fig. 2.

Detailed Description

As shown in fig. 1-3: a quick and accurate alignment device for the central line of a bolt hole of a steel crane beam rail pressing plate comprises an alignment plate 1, an L-shaped connecting plate 2, fastening screws 3, screws 4 and a pressing plate 5;

the number of the L-shaped connecting plates is two, vertical plates of the two L-shaped connecting plates are connected to one side of the aligning plate through fastening screws respectively, the fastening screws are loosened, the two L-shaped connecting plates can move left and right on one side of the aligning plate, and the distance between the two L-shaped connecting plates is adjusted; the distance between the two L-shaped connecting plates is the width of a web plate of the crane beam;

the two pressing plates are respectively positioned at the upper parts of the transverse plates of the two L-shaped connecting plates and are fixed through screws, and the distance between each pressing plate and the corresponding alignment plate is equal to the thickness of the crane beam wing plate;

the using method comprises the following steps:

firstly, loosening fastening screws 3, aligning the scales at the end parts of the plates 1, moving the L-shaped connecting plates 2 left and right according to the length of half of the thickness of the web plate, ensuring that the scales between the two L-shaped connecting plates 2 are lower than the thickness of the web plate, and then fastening the screws 3 to firmly connect the L-shaped connecting plates 2 on the plates 1;

secondly, rotating the screw 4 to enable the pressure plate 5 to be away from the alignment plate 1 by a certain distance so as to be plugged into a crane beam wing plate;

thirdly, the two sets of devices are respectively clamped from two ends of the crane beam, so that the L-shaped connecting plate 2 just clamps the web plate, the pressing plate 5 and the alignment plate 1 clamp the wing plate, and all parts are attached to the web plate and the wing plate;

fourthly, fastening two screws 4, enabling the pressing plates 5 on the two sides to move upwards to be attached to the wing plates, and completing the fixation of the device on the crane beam, wherein the scribed lines on the center of the top surface of the alignment plate 1 can be coincided with the axisymmetric center line of the crane beam, and the scribed lines on the two sides of the top surface of the alignment plate 1 are coincided with the center line of the bolt row holes; in the actual operation process, due to the fact that the types of the intervals between the track pressing plates are small, the scribed line positions on the top surface of the alignment plate 1 can be respectively matched and customized according to the conventional bolt hole arrangement parameters, the accuracy can be guaranteed, and the operation steps can be reduced;

fifthly, determining the center line of the row of holes of the 2 rows of bolts according to the scribed lines on the top surface of the alignment plate 1 and hanging steel wires;

and sixthly, checking and accepting the line. And (4) performing process quality inspection and acceptance by taking the edge line of the upper flange of the crane beam as a check line for the central line determined in the first step to the fifth step and performing spot check on the vertical distance between the two lines. And after the product is qualified, the bolt hole positioning procedure can be switched to.

The specific implementation steps are as follows:

1. and (5) checking and accepting the crane beam entity. Actually measuring actual quantities of the processed and formed crane beams in a workshop one by one, and judging whether the crane beam processing meets the requirements: and (4) determining the qualified product which meets the checking and evaluating requirements, and then transferring to the next step. For the out-of-tolerance item, a targeted measure is needed to eliminate the out-of-tolerance until the manufacturing tolerance is met and the requirement of qualified products is met, and then the next step can be carried out;

2. installing alignment dies at two ends of a crane beam;

3. clamping the web part by using a line-defining die, and determining the axisymmetric center line of the crane beam;

4. according to the special alignment mould, hanging steel wires to determine the central line of 2 rows of bolt row holes;

5. and checking and accepting the check line. And (4) performing process quality inspection and acceptance on the 3 central lines determined in the steps (3) and (4) by taking the edge line of the upper flange of the crane beam as a check line and performing spot check on the vertical distance between the two lines. After the product is qualified, the process can be transferred to a bolt hole positioning procedure;

6. and (5) repeating the steps 1-5, and determining the line of the central line position of the bolt row hole of the pressing plate of the crane beam track of the next crane beam.

Claims (1)

1. The utility model provides a quick accurate alignment device of steel crane beam track clamp plate bolt round hole central line which characterized in that: the device comprises an alignment plate, an L-shaped connecting plate, a fastening screw, a screw and a pressing plate;

the number of the L-shaped connecting plates is two, vertical plates of the two L-shaped connecting plates are connected to one side of the aligning plate through fastening screws respectively, the fastening screws are loosened, the two L-shaped connecting plates can move left and right on one side of the aligning plate, and the distance between the two L-shaped connecting plates is adjusted; the distance between the two L-shaped connecting plates is the width of a web plate of the crane beam;

the two pressure plates are respectively positioned on the upper parts of the transverse plates of the two L-shaped connecting plates and are fixed through screws, and the distance between the pressure plate and the aligning plate is equal to the thickness of the crane beam wing plate.

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