A type of amplitude limiting device for a crane inside a tunnel

Abstract

This utility model discloses a crane amplitude limiting device for tunnels, relating to the field of crane limiting technology. It includes a first fixed beam and a second fixed beam. A fixing groove is formed at the middle of the interior of the first fixed beam and at the middle of the lower end of the second fixed beam. A connecting piece is slidably connected inside the fixing groove. Vertical beams are provided at both ends of the first and second fixed beams. The lower surface of the first fixed beam is sequentially provided with a warning photoelectric sensor transmitter, an alarm photoelectric sensor transmitter, and an emergency braking photoelectric sensor transmitter. The lower surface of the second fixed beam is sequentially provided with a warning photoelectric sensor receiver, an alarm photoelectric sensor receiver, and an emergency braking photoelectric sensor receiver. This device has three detection functions: warning, alarm, and emergency braking, providing more comprehensive amplitude detection for the crane and avoiding the risk of the crane operating beyond the preset amplitude inside the tunnel.

Description

Technical Field

[0001] This utility model relates to the field of crane limiting technology, specifically to a crane amplitude limiting device for use in tunnels. Background Technology

[0002] TBM (Tube-Built Machine) cranes are heavy-duty lifting equipment specifically designed for tunnel construction. They are mainly used for critical operations such as TBM assembly, disassembly, and material transportation. With a compact structure, they are adaptable to confined spaces, possess high lifting capacity, and feature a modular design for easy assembly and disassembly within the tunnel. These cranes are typically equipped with explosion-proof motors, redundant braking systems, and amplitude limit devices to ensure safe operation in harsh environments such as dampness and dust. Traditional amplitude limit devices have a single detection distance; typically, the device immediately alarms after the crane has traveled a certain distance. If the preset detection distance is inappropriate, there is a risk that the crane will exceed the preset amplitude within the tunnel, and they lack early warning, alarm, and emergency braking detection functions. Utility Model Content

[0003] The purpose of this utility model is to provide a limit device for the amplitude of a crane inside a tunnel, so as to solve the problem that the traditional amplitude limit device mentioned in the background art has a single detection distance. Usually, the amplitude limit device will immediately alarm after the crane has traveled a certain distance. If the preset detection distance is not appropriate, there is a risk that the crane inside the tunnel will travel beyond the preset amplitude. In addition, it lacks detection functions such as early warning, alarm and emergency braking.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a limit device for the amplitude of a tunnel crane, comprising a first fixed beam and a second fixed beam. A fixing groove is provided at the middle of the interior of the first fixed beam and at the middle of the lower end of the second fixed beam. A connecting piece is slidably connected inside the fixing groove. Vertical beams are provided at both ends of the first fixed beam and both ends of the second fixed beam. A warning photoelectric sensor transmitter, an alarm photoelectric sensor transmitter, and an emergency braking photoelectric sensor transmitter are sequentially provided on the lower surface of the first fixed beam. A warning photoelectric sensor receiver, an alarm photoelectric sensor receiver, and an emergency braking photoelectric sensor receiver are sequentially provided on the lower surface of the second fixed beam. A connecting seat is provided on the lower surface of both the first and second fixed beams. A protective plate is provided on the upper surface of both the first and second fixed beams.

[0005] Preferably, the early warning photoelectric sensor transmitter, the alarm photoelectric sensor transmitter, and the emergency braking photoelectric sensor transmitter are all fixedly connected to the connecting seat by nuts, and the early warning photoelectric sensor receiver, the alarm photoelectric sensor receiver, and the emergency braking photoelectric sensor receiver are all fixedly connected to the connecting seat by nuts, and the connecting seat is connected to the connecting member by bolts.

[0006] Preferably, the early warning photoelectric sensor transmitter and the early warning photoelectric sensor receiver are respectively configured, the alarm photoelectric sensor transmitter and the alarm photoelectric sensor receiver are respectively configured, and the emergency braking photoelectric sensor transmitter and the emergency braking photoelectric sensor receiver are respectively configured.

[0007] Preferably, the upper end of the vertical beam is connected to the connector by bolts, and the vertical beam is clamped and fixed to the fixing groove by the connector.

[0008] Preferably, the connecting seat is clamped and fixed to the fixing groove by the connecting member.

[0009] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional amplitude limiting device, an adjustable photoelectric constant sensor is designed and installed at the lower end of the two fixed beams. Different detection distances can be set according to the site environment. Three sets of photoelectric sensors are set, which have three detection functions: early warning, alarm and emergency braking. The amplitude detection of the crane is more comprehensive, avoiding the risk of the crane running in the tunnel exceeding the preset amplitude. Attached Figure Description

[0010] Figure 1 This is an isometric view of the main structure of this utility model; Figure 2 This is a front view schematic diagram of the main structure of this utility model: Figure 3 This is a front sectional view of the main structure of this utility model; Figure 4 This is a left-side view of the main structure of this utility model; Figure 5 This is a left sectional view of the main structure of this utility model.

[0011] In the diagram: 1-Fixed beam No. 1, 2-Fixed beam No. 2, 3-Fixed groove, 4-Vertical beam, 5-Early warning photoelectric sensor transmitter, 6-Alarm photoelectric sensor transmitter, 7-Emergency braking photoelectric sensor transmitter, 8-Early warning photoelectric sensor receiver, 9-Alarm photoelectric sensor receiver, 10-Emergency braking photoelectric sensor receiver, 11-Connector, 12-Connector base, 13-Guard plate. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Please see Figure 1-5 This utility model provides a limit device for the amplitude of a crane inside a tunnel, including a first fixed beam 1 and a second fixed beam 2. A fixing groove 3 is provided at the middle of the interior of the first fixed beam 1 and at the middle of the lower end of the second fixed beam 2. A connecting piece 11 is slidably connected inside the fixing groove 3. Vertical beams 4 are provided at both ends of the first fixed beam 1 and both ends of the second fixed beam 2. A warning photoelectric sensor transmitter 5, an alarm photoelectric sensor transmitter 6, and an emergency braking photoelectric sensor transmitter 7 are sequentially provided on the lower surface of the first fixed beam 1. A warning photoelectric sensor receiver 8, an alarm photoelectric sensor receiver 9, and an emergency braking photoelectric sensor receiver 10 are sequentially provided on the lower surface of the first fixed beam 1 and the lower surface of the second fixed beam 2. A connecting seat 12 is provided on the lower surface of both the first fixed beam 1 and the second fixed beam 2. A protective plate 13 is provided on the upper surface of both the first fixed beam 1 and the second fixed beam 2.

[0014] In use, the No. 1 fixed beam 1 and the No. 2 fixed beam 2 are respectively set on both sides of the crane rail. A fixing groove 3 is opened at the lower end of the No. 1 fixed beam 1 and the No. 2 fixed beam 2. A connecting piece 11 is slidably installed inside the fixing groove 3. Vertical beams 4 are set at both ends of the lower surface of the No. 1 fixed beam 1 and the No. 2 fixed beam 2. The vertical beams 4 are fixedly connected to the connecting piece 11 by bolts, clamping and fixing the fixing groove 3, thus setting the vertical beams 4 at both ends of the lower surface of the No. 1 fixed beam 1 and the No. 2 fixed beam 2, supporting them. A warning photoelectric sensor transmitter 5 is set on one side of the lower surface of the No. 1 fixed beam 1. A warning photoelectric sensor receiver 8 is set on the lower surface of the No. 2 fixed beam 2 at a position corresponding to the warning photoelectric sensor transmitter 5. The warning photoelectric sensor transmitter 5 and the warning photoelectric sensor receiver 8 form a warning detection photoelectric sensor group to detect the crane's running amplitude. An alarm photoelectric sensor transmitter 6 is set on the lower surface of the No. 1 fixed beam 1. A corresponding alarm photoelectric sensor transmitter 6 is set on the lower surface of the No. 2 fixed beam 2. An alarm photoelectric sensor receiver 9 is installed at a specific location. An alarm detection photoelectric sensor group is formed by the alarm photoelectric sensor transmitter 6 and the alarm photoelectric sensor receiver 9 to detect the crane's travel amplitude. An emergency braking photoelectric sensor transmitter 7 is installed on the lower surface of the first fixed beam 1. An emergency braking photoelectric sensor receiver 10 is installed on the lower surface of the second fixed beam 2 at a position corresponding to the emergency braking photoelectric sensor transmitter 7. An emergency braking photoelectric sensor group is formed by the emergency braking photoelectric sensor transmitter 7 and the emergency braking photoelectric sensor receiver 10 to detect the crane's travel amplitude during emergency braking. A guard plate 13 is installed at the upper end of the first fixed beam 1 and the second fixed beam 2 to protect the electronic components below. The warning photoelectric sensor transmitter 5, the alarm photoelectric sensor transmitter 6, the emergency braking photoelectric sensor transmitter 7, the warning photoelectric sensor receiver 8, the alarm photoelectric sensor receiver 9, and the emergency braking photoelectric sensor receiver 10 are all movably connected to the first fixed beam 1 and the second fixed beam 2 respectively through a connecting seat 12.

[0015] The early warning photoelectric sensor transmitter 5, the alarm photoelectric sensor transmitter 6, and the emergency braking photoelectric sensor transmitter 7 are all fixedly connected to the connecting seat 12 by nuts. The early warning photoelectric sensor receiver 8, the alarm photoelectric sensor receiver 9, and the emergency braking photoelectric sensor receiver 10 are all fixedly connected to the connecting seat 12 by nuts. The connecting seat 12 is connected to the connecting piece 11 by bolts. The early warning photoelectric sensor transmitter 5, the alarm photoelectric sensor transmitter 6, the emergency braking photoelectric sensor transmitter 7, the early warning photoelectric sensor receiver 8, the alarm photoelectric sensor receiver 9, and the emergency braking photoelectric sensor receiver 10 are all movably connected to the first fixed beam 1 and the second fixed beam 2 respectively through the connecting seat 12. The positions of the early warning photoelectric sensor transmitter 5, the alarm photoelectric sensor transmitter 6, the emergency braking photoelectric sensor transmitter 7, the early warning photoelectric sensor receiver 8, the alarm photoelectric sensor receiver 9, and the emergency braking photoelectric sensor receiver 10 can be adjusted according to the site environment through the connecting seat 12.

[0016] The early warning photoelectric sensor transmitter 5 and the early warning photoelectric sensor receiver 8 are respectively configured, the alarm photoelectric sensor transmitter 6 and the alarm photoelectric sensor receiver 9 are respectively configured, and the emergency braking photoelectric sensor transmitter 7 and the emergency braking photoelectric sensor receiver 10 are respectively configured. The early warning photoelectric sensor transmitter 5 and the early warning photoelectric sensor receiver 8 form an early warning detection photoelectric sensor group to detect the crane's operating range. The alarm photoelectric sensor transmitter 6 and the alarm photoelectric sensor receiver 9 form an alarm detection photoelectric sensor group to detect the crane's operating range. The emergency braking photoelectric sensor transmitter 7 and the emergency braking photoelectric sensor receiver 10 form an emergency braking photoelectric sensor group to detect the crane's operating range during emergency braking.

[0017] The upper end of the vertical beam 4 is connected to the connector 11 by bolts. The vertical beam 4 is clamped and fixed to the fixing groove 3 by the connector 11. The vertical beam 4 is detachably installed to both ends of the lower surface of the first fixing beam 1 and the second fixing beam 2.

[0018] The connecting seat 12 clamps and fixes the fixing groove 3 through the connecting member 11, thereby movably connecting the early warning photoelectric sensor transmitter 5, the alarm photoelectric sensor transmitter 6, the emergency braking photoelectric sensor transmitter 7, the early warning photoelectric sensor receiver 8, the alarm photoelectric sensor receiver 9, and the emergency braking photoelectric sensor receiver 10 to the lower surfaces of the first fixing beam 1 and the second fixing beam 2.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A span limiter for an in-hoie crane, characterized by: The system includes a first fixed beam (1) and a second fixed beam (2). The first fixed beam (1) and the second fixed beam (2) are provided with a fixing groove (3) at the middle of their interior and at the middle of their lower end. A connector (11) is slidably connected inside the fixing groove (3). Vertical beams (4) are provided at both ends of the first fixed beam (1) and the second fixed beam (2). The lower surface of the first fixed beam (1) is provided with a warning photoelectric sensor transmitter (5), an alarm photoelectric sensor transmitter (6), and an emergency braking photoelectric sensor transmitter (7) in sequence. The lower surface of the second fixed beam (2) is provided with a warning photoelectric sensor receiver (8), an alarm photoelectric sensor receiver (9), and an emergency braking photoelectric sensor receiver (10) in sequence. Connecting seats (12) are provided on the lower surface of the first fixed beam (1) and the lower surface of the second fixed beam (2). Protective plates (13) are provided on the upper surface of the first fixed beam (1) and the second fixed beam (2).

2. The amplitude limiting device for a tunnel crane according to claim 1, characterized in that: The early warning photoelectric sensor transmitter (5), the alarm photoelectric sensor transmitter (6), and the emergency braking photoelectric sensor transmitter (7) are all fixedly connected to the connecting seat (12) by nuts. The early warning photoelectric sensor receiver (8), the alarm photoelectric sensor receiver (9), and the emergency braking photoelectric sensor receiver (10) are all fixedly connected to the connecting seat (12) by nuts. The connecting seat (12) is connected to the connecting piece (11) by bolts.

3. The tunnel crane amplitude limiting device according to claim 1, characterized in that: The early warning photoelectric sensor transmitter (5) is configured to correspond with the early warning photoelectric sensor receiver (8), the alarm photoelectric sensor transmitter (6) is configured to correspond with the alarm photoelectric sensor receiver (9), and the emergency braking photoelectric sensor transmitter (7) is configured to correspond with the emergency braking photoelectric sensor receiver (10).

4. The amplitude limiting device for a tunnel crane according to claim 1, characterized in that: The upper end of the vertical beam (4) is connected to the connector (11) by bolts, and the vertical beam (4) clamps and fixes the fixing groove (3) through the connector (11).

5. The tunnel crane amplitude limiting device according to claim 1, characterized in that: The connecting seat (12) clamps and fixes the fixing groove (3) through the connecting member (11).

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