阅读说明：本技术 一种提高吊车梁钢轨轨顶水平精度的施工方法 (Construction method for improving horizontal precision of crane beam steel rail top ) 是由 秦绍俊 吴勇 余翔鹏 范弟彬 王丽萍 张薰文 周媛 张涵皎 秦绍然 梁春江 于 2020-08-05 设计创作，主要内容包括：本发明公开了一种提高吊车梁钢轨轨顶水平精度的施工方法,采用调节螺母和垫板配合使用的方式,在钢轨放置完成后通过钢轨底部外的调节螺母来调整轨顶水平精度。本发明主要采用板材、螺栓、螺母为原材料,通过简单加工即可得到所需的零件,整个过程工艺简单,取材方便,材料成本低廉；本发明能把钢筋混凝土吊车梁钢轨轨顶水平度控制在±2mm以内,提高安装精度,避免了返工,可节约施工成本,能把施工成本控制在可控范围以内。(The invention discloses a construction method for improving the horizontal accuracy of a rail top of a crane beam steel rail, which adopts a mode of matching an adjusting nut and a base plate for use, and adjusts the horizontal accuracy of the rail top through the adjusting nut outside the bottom of the steel rail after the steel rail is placed. The invention mainly adopts plates, bolts and nuts as raw materials, can obtain required parts by simple processing, and has simple process, convenient material acquisition and low material cost in the whole process; the invention can control the levelness of the steel rail top of the reinforced concrete crane beam within +/-2 mm, improve the installation precision, avoid rework, save the construction cost and control the construction cost within a controllable range.)

1. A construction method for improving the horizontal precision of a crane beam steel rail top is characterized by comprising the following steps:

manufacturing two fixing bolts, wherein the length of the two fixing bolts is greater than the thickness of an upper flange plate of the crane beam;

preparing six nuts, wherein two of the six nuts are adjusting nuts, and the other four nuts are fixing nuts; the specification of all the nuts is the same as that of the fixing bolts;

manufacturing a rectangular steel plate, machining two holes in the steel plate, wherein the center distance of the two holes is equal to the center distance of reserved holes of an upper flange plate of the reinforced concrete crane beam, and the hole diameter of the two holes is larger than the diameter of the fixing bolt;

the two fixing bolts penetrate through the preformed holes of the upper flange plate of the reinforced concrete crane beam from bottom to top, the heads of the fixing bolts are abutted against the upper flange plate of the reinforced concrete crane beam, and then the fixing bolts are fixed on the upper flange plate of the reinforced concrete crane beam by using the two fixing nuts;

installing the two adjusting nuts on the two fixing bolts, wherein the distance between the top surfaces of the two adjusting nuts and the top surface of the upper flange plate of the reinforced concrete crane beam is equal to the thickness of the concrete leveling layer;

the steel plate is placed on the adjusting nut after passing through the fixing bolt from top to bottom, and then the steel plate is fixed from the top surface of the steel plate by using the two remaining fixing bolts;

measuring the top elevation of the steel plate, and adjusting an adjusting nut according to the measurement result until the top elevation of the steel plate reaches the installation requirement;

installing a steel rail;

re-measuring the level of the rail top elevation of the steel rail, and if deviation occurs, adjusting an adjusting nut and a fixing nut until the mounting requirement is met;

and (5) pouring a concrete leveling layer.

2. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: the length L of the fixing bolt is equal to the thickness of the flange plate on the reinforced concrete crane beam plus 100 mm.

3. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: the thread length of the fixing bolt is 120 mm.

4. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: the nut is characterized by further comprising eight base plates, wherein circular holes with diameters larger than the diameters of the fixing bolts are formed in the center positions of the base plates, and the outer edges of the cross sections of the base plates include the outer edges of the nuts.

5. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: the steel plate is 120 gamma (A +200) gamma 8mm in size, wherein A is the center distance of the reserved holes of the upper flange plate of the crane beam.

6. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: and measuring the top elevation of the steel plate and the levelness of the installed steel rail top elevation by using a leveling instrument.

7. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: one of the two holes on the steel plate is a circular hole, and the other hole is an oblong circular hole.

8. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: before the steel rail is installed, positioning and paying-off work is carried out, and the installation position of the steel rail is marked on the steel plate.

9. The construction method for improving the horizontal accuracy of the rail top of the crane beam steel rail according to claim 1, is characterized in that: the specific process for installing the steel rail is as follows:

hoisting the steel rail to the steel plate, firstly removing a fixing nut on the upper part of the steel plate from the end head, then adjusting the track, installing a steel rail pressing plate and fixing; and removing one fixing nut and installing a set of steel rail pressing plate until all the steel rail pressing plates are installed.

Technical Field

The invention relates to the field of steel rail construction, in particular to a construction method for improving the horizontal precision of a crane beam steel rail top.

Background

In the installation and control process of the horizontal degree of the steel rail top of the reinforced concrete crane beam in a building factory, the control of the horizontal precision of the steel rail top of the crane beam is always a technical problem in the construction process. The horizontal precision of the rail top is generally controlled through a concrete leveling layer or a steel base plate in the traditional construction mode, but the construction quality of the mode is difficult to guarantee, the construction result often hardly reaches the standard requirement, and the reworking and construction cost are increased. Therefore, in order to control the levelness of the rail top of the steel rail within the standard (the standard is specified as the rail top elevation +/-5 mm), a brand new construction method needs to be researched.

Disclosure of Invention

In view of the above, the present invention provides a construction method capable of adjusting the horizontal accuracy of the rail top of the crane beam.

The purpose of the invention is realized by the following technical scheme:

manufacturing two fixing bolts, wherein the length of the two fixing bolts is greater than the thickness of an upper flange plate of the crane beam;

preparing six nuts, wherein two of the six nuts are adjusting nuts, and the other four nuts are fixing nuts; the specification of all the nuts is the same as that of the fixing bolts;

manufacturing a rectangular steel plate, machining two holes in the steel plate, wherein the center distance of the two holes is equal to the center distance of reserved holes of an upper flange plate of the reinforced concrete crane beam, and the hole diameter of the two holes is larger than the diameter of the fixing bolt;

the two fixing bolts penetrate through the preformed holes of the upper flange plate of the reinforced concrete crane beam from bottom to top, the heads of the fixing bolts are abutted against the upper flange plate of the reinforced concrete crane beam, and then the fixing bolts are fixed on the upper flange plate of the reinforced concrete crane beam by using the two fixing nuts;

installing the two adjusting nuts on the two fixing bolts, wherein the distance between the top surfaces of the two adjusting nuts and the top surface of the upper flange plate of the reinforced concrete crane beam is equal to the thickness of the concrete leveling layer;

the steel plate is placed on the adjusting nut after passing through the fixing bolt from top to bottom, and then the steel plate is fixed from the top surface of the steel plate by using the two remaining fixing bolts;

measuring the top elevation of the steel plate, and adjusting an adjusting nut according to the measurement result until the top elevation of the steel plate reaches the installation requirement;

installing a steel rail;

re-measuring the level of the rail top elevation of the steel rail, and if deviation occurs, adjusting an adjusting nut and a fixing nut until the mounting requirement is met;

and (5) pouring a concrete leveling layer.

Further, the length L of the fixing bolt is equal to the thickness of the upper flange plate of the reinforced concrete crane beam plus 100 mm.

Further, the thread length of the fixing bolt is 120 mm.

The nut is characterized by further comprising eight base plates, wherein a round hole with the diameter larger than that of the fixing bolt is formed in the center of each base plate, and the outer edge of the cross section of each base plate comprises the outer edge of the nut; except the base plate at the bottom of the bolt, each base plate is matched with each nut for installation and use, so that the connection reliability is enhanced.

Further, the steel plate has a size of 120 gamma (A +200) gamma 8mm, wherein A is the center distance of the reserved holes of the upper flange plate of the crane beam.

And further, measuring the top elevation of the steel plate and the levelness of the installed rail top elevation of the steel rail by using a level gauge.

Furthermore, one of the two holes on the steel plate is a circular hole, and the other hole is an oblong circular hole.

Furthermore, before the steel rail is installed, positioning and paying-off work is carried out, and the installation position of the steel rail is marked on the steel plate.

Further, the specific process of installing the steel rail is as follows:

hoisting the steel rail to the steel plate, firstly removing a fixing nut on the upper part of the steel plate from the end head, then adjusting the track, installing a steel rail pressing plate and fixing; and removing one fixing nut and installing a set of steel rail pressing plate until all the steel rail pressing plates are installed.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the invention mainly adopts plates, bolts and nuts as raw materials, can obtain required parts by simple processing, and has simple process, convenient material acquisition and low material cost in the whole process; the invention can control the levelness of the steel rail top of the reinforced concrete crane beam within +/-2 mm, improve the installation precision, avoid rework, save the construction cost and control the construction cost within a controllable range.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

Detailed Description

In order to make the technical solutions, advantages and objects of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the present application.

The invention is further illustrated by the following figures and examples.