A cart limiting detection device

Abstract

The utility model discloses a kind of car limiting detection devices, including support, limiting support, limiting wheel and limiting switch support;The support is connected with connecting seat corresponding by hinged axle and linear motion bearing, connecting seat is welded with limiting support, limiting wheel is installed with bearing and bearing seat in the lower end of limiting support, limiting wheel is adapted with track, limiting switch support is fixed on the side wall of limiting support, various limiting switches are installed in limiting switch support.The utility model can always keep the distance of limiting switch and track center line unchanged, ensure that limiting switch can always align limiting switch detection head, so as to guarantee the effective detection of limiting switch, satisfy car safe operation demand.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a trolley limit detection device. Background Technology

[0002] As is well known, in the traveling mechanism of a gantry crane, to prevent wheel wear caused by installation and manufacturing errors, there is a 10-20mm gap between the wheel flange and the rail. Various switches (including mechanical switches and proximity switches) used for crane trolley travel positioning and limit are installed on the trolley frame of the traveling mechanism. Due to the gap between the wheel flange and the rail, the trolley frame may move left and right relative to the rail. The limit switches installed on the trolley frame will swing left and right with the trolley frame, causing the limit switches to fail to align with the detection head, resulting in limit switch failure and causing a trolley operation safety accident. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a large vehicle limit detection device that can always keep the distance between the limit switch and the center line of the track constant, ensuring that the limit switch can always be aligned with the limit switch detection head, thereby ensuring the effective detection of the limit switch and meeting the requirements for safe operation of the large vehicle. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a large vehicle limit detection device, comprising a support, a limit bracket, a limit wheel, and a limit switch bracket; the support is connected to a connecting seat via a hinge shaft and a linear motion bearing, the connecting seat is welded to the limit bracket, the lower end of the limit bracket is fitted with a limit wheel via a bearing and a bearing seat, the limit wheel is adapted to the track, and the limit switch bracket is fixed on the side wall of the limit bracket, the limit switch bracket being fitted with various limit switches.

[0005] Preferably, the support is rotatably connected to a hinge shaft, the hinge shaft is sleeved with a linear motion bearing, the linear motion bearing is sleeved with a bearing seat, and the bearing seat is connected to the connecting seat by a bolt and nut assembly.

[0006] Preferably, the detection head of the limit switch is positioned with the center line of the track during installation.

[0007] Preferably, the limiting bracket is a hollow structure filled with cement counterweight.

[0008] Preferably, the support is welded to the trolley frame of the trolley traveling mechanism.

[0009] Preferably, the rim width of the limiting wheel is 0.5 cm wider than the track width.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: When the trolley is running, the trolley frame may swing left and right on the track, while the limit wheel can only move with the track due to the limitation of the wheel flange. By setting a linear motion bearing, the hinge shaft of the support can move within the linear motion bearing, which meets the requirement that the limit bracket does not move when the trolley frame moves. The limit bracket moves along the track with the limit wheel, so the limit switch bracket and the limit switch on it will always maintain a constant distance from the center line of the track, ensuring that the limit switch can always be aligned with the limit switch detection head, thereby ensuring the effective detection of the limit switch. Attached Figure Description

[0011] Fig. 1 This is a front view of the present invention; Fig. 2 This is a side view of the present invention; Fig. 3 This is a top view of the present invention.

[0012] In the diagram: 1. Support, 2. Connecting seat, 3. Limit bracket, 4. Limit wheel, 5. Limit switch bracket, 6. Limit switch, 7. Hinge shaft, 8. Linear motion bearing. Detailed Implementation

[0013] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0014] Please see Figs. 1-3 The present invention provides the following technical solution: Example 1: A large vehicle limit detection device includes a support 1, a limit bracket 3, a limit wheel 4, and a limit switch bracket 5; the support 1 is connected to the connecting seat 2 via a hinge shaft 7 and a linear motion bearing 8, the connecting seat 2 is welded to the limit bracket 3, the lower end of the limit bracket 3 is equipped with a limit wheel 4 via a bearing and a bearing seat, the limit wheel 4 is adapted to the track, the limit switch bracket 5 is fixed on the side wall of the limit bracket 3, and various limit switches 6 are installed on the limit switch bracket 5. The detection head of the limit switch 6 must be positioned with the center line of the track during installation; It is understandable that when the trolley is running, the trolley frame may swing left and right on the track, while the limit wheel 4 can only move along the track due to the wheel flange limitation. The limit bracket 3 moves along the track with the limit wheel 4. In this way, the limit switch bracket 5 and the limit switch 6 on it will always maintain a constant distance from the center line of the track, ensuring that the limit switch 6 can always be aligned with the limit switch detection head, thereby ensuring the effective detection of the limit switch 6. It should be noted that the support 1 is rotatably connected to the hinge shaft 7, the hinge shaft 7 is sleeved with the linear motion bearing 8, and the linear motion bearing 8 is sleeved with the bearing seat. The bearing seat is connected to the connecting seat 2 by a bolt and nut assembly, which is convenient for disassembly. By setting the linear motion bearing 8, when the hinge shaft 7 of the support 1 can move within the linear motion bearing 8, it meets the requirement that the limit bracket 3 does not move when the trolley frame moves.

[0015] Example 2: Unlike Example 1, the limiting bracket 3 is a hollow structure filled with cement counterweight to increase the counterweight and ensure that the limiting wheel 4 always moves in contact with the track and will not detach from the track.

[0016] Example 3: Unlike Example 1, the support 1 is welded to the trolley frame of the trolley traveling mechanism; in addition, the rim width of the limiting wheel 4 is 0.5cm wider than the track width to ensure that the limiting wheel 4 can always travel along the track.

[0017] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to include all changes that fall within the meaning and scope of equivalents in the content of this utility model.

Claims

1. A large vehicle limit detection device, characterized in that: It includes a support (1), a limit bracket (3), a limit wheel (4), and a limit switch bracket (5); the support (1) is connected to the connecting seat (2) through a hinge shaft (7) and a linear motion bearing (8), the connecting seat (2) is welded to the limit bracket (3), the lower end of the limit bracket (3) is equipped with a limit wheel (4) through a bearing and a bearing seat, the limit wheel (4) is adapted to the track, the limit switch bracket (5) is fixed on the side wall of the limit bracket (3), and various limit switches (6) are installed on the limit switch bracket (5).

2. The large vehicle limit detection device according to claim 1, characterized in that: The support (1) is rotatably connected to a hinge shaft (7), the hinge shaft (7) is sleeved with a linear motion bearing (8), the linear motion bearing (8) is sleeved with a bearing seat, and the bearing seat is connected to the connecting seat (2) by a bolt and nut assembly.

3. The large vehicle limit detection device according to claim 1, characterized in that: The detection head of the limit switch (6) must be positioned with the center line of the track during installation.

4. The large vehicle limit detection device according to claim 1, characterized in that: The limiting bracket (3) is a hollow structure, and the inside is filled with cement counterweight.

5. The large vehicle limit detection device according to claim 1, characterized in that: The support (1) is welded to the trolley frame of the traveling mechanism.

6. The large vehicle limit detection device according to claim 1, characterized in that: The flange width of the limiting wheel (4) is 0.5cm wider than the track width.

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