阅读说明：本技术 一种大跨度门式起重机行程检测装置 (Large-span gantry crane stroke detection device ) 是由 高伟东 强少华 于 2021-08-06 设计创作，主要内容包括：本发明提供一种大跨度门式起重机行程检测装置,其包括至少一组检测机构,每组检测机构均包括连接架、安装架、导向滚轮、检测轮、轮轴以及编码器；连接架的一端与起重机大车行走机构连接,连接架的另一端与安装架铰接相连；检测轮套装在轮轴上,轮轴通过轴承安装在安装架上,检测轮与安装架构成可转动连接,检测轮的轮踏面与轨道顶面相接触；编码器连接安装在轮轴的端部；导向滚轮的数量为四个,安装在安装架的下方,导向滚轮的轮踏面与检测轮的轮踏面方向垂直,左侧的二个导向滚轮与右侧的二个导向滚轮呈对称布置。本发明行程检测装置的可精确检测起重机两侧轨道行走机构运行行程并动态调整、提高两侧轨道行走机构的同步性。(The invention provides a large-span portal crane stroke detection device which comprises at least one group of detection mechanisms, wherein each group of detection mechanisms comprises a connecting frame, a mounting frame, a guide roller, a detection wheel, a wheel shaft and an encoder; one end of the connecting frame is connected with the crane cart traveling mechanism, and the other end of the connecting frame is hinged with the mounting frame; the detection wheel is sleeved on the wheel shaft, the wheel shaft is arranged on the mounting frame through a bearing, the detection wheel and the mounting frame form rotatable connection, and the wheel tread of the detection wheel is in contact with the top surface of the track; the encoder is connected and installed at the end part of the wheel shaft; the number of the guide rollers is four, the guide rollers are arranged below the mounting frame, the wheel tread surface of each guide roller is perpendicular to the wheel tread surface of each detection wheel, and the two guide rollers on the left side and the two guide rollers on the right side are symmetrically arranged. The stroke detection device can accurately detect the running stroke of the rail travelling mechanisms on the two sides of the crane, dynamically adjust the running stroke and improve the synchronism of the rail travelling mechanisms on the two sides.)

1. The utility model provides a large-span gantry crane stroke detection device which characterized in that: the device comprises at least one group of detection mechanisms, wherein each group of detection mechanisms comprises a connecting frame, a mounting frame, a guide roller, a detection wheel, a wheel shaft and an encoder;

one end of the connecting frame is connected with a crane cart travelling mechanism, and the other end of the connecting frame is hinged with the mounting frame;

the detection wheel is sleeved on the wheel shaft, the wheel shaft is installed on the installation frame through a bearing, the detection wheel and the installation frame form rotatable connection, and a wheel tread of the detection wheel is in contact with the top surface of the track;

the encoder is connected and installed at the end part of the wheel shaft;

the number of the guide rollers is four, the guide rollers are installed below the installation frame, the wheel tread surface of each guide roller is perpendicular to the wheel tread surface of each detection wheel, the two guide rollers on the left side are located on the left side of the track, the two guide rollers on the right side are located on the right side of the track, and the two guide rollers on the left side and the two guide rollers on the right side are symmetrically arranged.

2. The long-span gantry crane stroke detecting device according to claim 1, wherein:

and a gap of 5-8 mm is reserved between the wheel tread of the guide wheel and the side face of the track.

3. The long-span gantry crane stroke detecting device according to claim 1, wherein:

wherein the mounting frame comprises a frame-shaped part for mounting the detection wheel and an arm-shaped part for connecting with the connecting frame;

the arm-shaped part is provided with a left side wall and a right side wall, and the left side wall and the right side wall are respectively provided with a through hole;

two ends of a hinge shaft are respectively inserted into the through holes on the left side and the right side, a stainless steel shaft sleeve is sleeved on a shaft section of the hinge shaft between the left side wall and the right side wall, and a sliding bearing is arranged outside the stainless steel shaft sleeve;

the connecting frame is provided with a connecting hole, and the connecting hole is connected with the outer ring of the sliding bearing.

4. The long-span gantry crane stroke detecting device according to claim 1, wherein:

the detection mechanisms are two groups, and the two groups of detection mechanisms are arranged corresponding to the two rails of the crane.

Technical Field

The invention relates to the technical field of crane stroke detection, in particular to a large-span portal crane stroke detection device.

Background

When the crane works, the position of the crane needs to be monitored and detected in real time so as to ensure the safety and accuracy of construction operation. At present, the stroke detection mode of the gantry crane is that a detection encoder is directly installed on a wheel shaft of a driven trolley, and the encoder inputs detected stroke data into a data system of the crane for analysis. However, in this way, due to factors such as deviation of the traveling mechanism, rail gnawing, errors generated in the manufacturing and installation processes, and the like, the data measured by the encoder has certain deviation, and the validity of the data is influenced to a certain extent.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a stroke detection device for a long-span gantry crane.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a large-span portal crane stroke detection device, which is matched with a crane and is characterized in that: the device comprises at least one group of detection mechanisms, wherein each group of detection mechanisms comprises a connecting frame, a mounting frame, a guide roller, a detection wheel, a wheel shaft and an encoder; one end of the connecting frame is connected with the crane cart traveling mechanism, and the other end of the connecting frame is hinged with the mounting frame; the detection wheel is sleeved on the wheel shaft, the wheel shaft is arranged on the mounting frame through a bearing, the detection wheel and the mounting frame form rotatable connection, and the wheel tread of the detection wheel is in contact with the top surface of the track; the encoder is connected and installed at the end part of the wheel shaft; the quantity of guide rollers is four, installs in the below of mounting bracket, and guide rollers's wheel tread is perpendicular with the wheel tread direction of detection wheel, and two left guide rollers are located orbital left side, and two guide rollers on right side are located orbital right side, and two left guide rollers are symmetrical arrangement with two guide rollers on right side.

The stroke detection device of the large-span portal crane provided by the invention can also have the following characteristics: wherein, a gap of 5 mm-8 mm is reserved between the wheel tread of the guide wheel and the side surface of the track.

The stroke detection device of the large-span portal crane provided by the invention can also have the following characteristics: the mounting frame comprises a frame-shaped part for mounting the detection wheel and an arm-shaped part for connecting with the connecting frame; the arm-shaped part is provided with a left side wall and a right side wall, and the left side wall and the right side wall are respectively provided with a through hole; two ends of the hinge shaft are respectively inserted into the through holes on the left side and the right side, a stainless steel shaft sleeve is sleeved on a shaft section of the hinge shaft between the left side wall and the right side wall, and a sliding bearing is arranged outside the stainless steel shaft sleeve; the connecting frame is provided with a connecting hole, and the connecting hole is connected with the outer ring of the sliding bearing.

The stroke detection device of the large-span portal crane provided by the invention can also have the following characteristics: the detection mechanisms are two groups, and the two groups of detection mechanisms are arranged corresponding to the two rails of the crane.

Compared with the prior art, the invention has the beneficial effects that:

in the long-span portal crane stroke detection device, the mounting frame is hinged with the connecting frame through the hinge shaft and the sliding bearing, the detection wheel is mounted on the mounting frame, the guide idler wheels are mounted below the mounting frame, the crane cart travelling mechanism can be dynamically adjusted for operation deviation, so that the position coordinate of the crane is accurately detected, and when the detection mechanism is arranged by two groups of two rails corresponding to the crane, the synchronism of the two-side rail travelling mechanisms is improved.

Drawings

FIG. 1 is a front view of a large-span gantry crane travel detection device in an embodiment of the invention;

FIG. 2 is a side view of a large-span gantry crane travel detection apparatus in an embodiment of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1 at section A-A;

fig. 4 is a cross-sectional view of fig. 1 at section B-B.

Reference numerals: 1-a connecting frame; 2-a mounting rack; 3-guide rollers; 4-an encoder; 5-detection wheel; 6-wheel shaft; 7-stainless steel shaft sleeve; 8-a sliding bearing; 9-a hinge shaft; 10-track.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the following embodiments specifically describe the stroke detection device of the large-span gantry crane according to the present invention with reference to the attached drawings.

< example >

The utility model provides a large-span gantry crane stroke detection device, this large-span gantry crane stroke detection device comprises a set of detection mechanism or two sets of detection mechanism. Referring to fig. 1 to 4, each set of detection mechanism includes a connecting frame 1, a mounting frame 2, a guide roller 3, a detection wheel 5, a wheel shaft 6, an encoder 4, a hinge shaft 9, a stainless steel shaft sleeve 7, and a sliding bearing 8.

As shown in figure 1, the upper end of the connecting frame 1 is fixedly connected with the crane cart travelling mechanism through bolts. The lower end of the connecting frame 1 is connected with the mounting frame 2, and the lower end of the connecting frame 1 is provided with a connecting hole.

The mounting frame 2 includes an arm portion for connecting with the connecting frame 1, and a frame portion for mounting the detection wheel 5. The arm portion of the mounting bracket 2 has a left side wall and a right side wall, and through holes are opened in the left side wall and the right side wall, respectively. Two ends of the hinge shaft 9 are respectively inserted and fixed with the through holes at the left and right sides. The shaft section of the hinge shaft 9 between the left side wall and the right side wall is sleeved with a stainless steel shaft sleeve 7, and a sliding bearing is installed outside the stainless steel shaft sleeve 7. The connecting hole of the lower end of the connecting frame 1 is connected with the outer ring of the sliding bearing 8. The connection relation between the mounting frame 2 and the connecting frame 1 in this embodiment enables the connecting frame 1 and the mounting frame 2 to relatively slide along the axial direction of the hinge shaft and also relatively rotate around the axial lead of the hinge shaft, so that when the crane travels, the detection mechanism can flexibly and dynamically adjust the connection relation with the crane cart traveling mechanism in a self-adaptive manner regardless of whether the crane cart traveling mechanism deviates, gnaws a rail or has installation errors.

The left side and the right side of the frame-shaped part of the mounting rack 2 are correspondingly provided with mounting holes for mounting bearings, and the two bearings are respectively mounted in the two mounting holes. The detection wheel 5 is sleeved on the wheel shaft 6, and two ends of the wheel shaft 6 are respectively connected with the bearing inner rings of the bearings on the left side and the right side, so that the detection wheel 5 and the mounting frame 2 form rotatable connection. The wheel tread of the detection wheel 5 is contacted with the top surface of the rail 10 when the vehicle travels. The encoder 4 is connected and installed at the end part of the wheel shaft 6, the rotating shaft of the encoder 4 is coaxially connected with the wheel shaft 6, and the connecting mode can be realized by adopting conventional connecting modes such as a coupler, a connecting bracket, the wheel shaft after being perforated, the encoder rotating shaft in an inserting connection mode and the like. The encoder 4 is connected with the existing data system of the crane and transmits the detected data to the system.

The number of the guide rollers 3 is four, as shown in the figure and figure 2, the guide rollers 3 are installed below the installation frame 2, the wheel tread surface of each guide roller 3 is perpendicular to the wheel tread surface of the detection wheel 5, the two guide rollers on the left side are located on the left side of the track, the two guide rollers on the right side are located on the right side of the track, and the two guide rollers on the left side and the two guide rollers on the right side are symmetrically arranged. A gap of 5 mm-8 mm is reserved between the wheel tread of the guide roller 3 and the side face of the track, and the gap with a specific size is arranged, so that the guide roller has a certain buffering space while a good guiding effect is achieved, the situation that the guide rollers on the left side and the right side are meshed with the track in a clamping mode is avoided, the detection wheel 5 always moves forward along the track face, and the accuracy of data acquisition of the encoder 4 is ensured.

The long-span portal crane stroke detection device in the embodiment preferably adopts detection mechanisms, and the two groups of detection mechanisms are arranged corresponding to the two rails of the crane. The detection mechanism detects the running stroke of the cart running mechanisms on the two rails, and improves the synchronism of the running mechanisms on the two rails.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.