A reinforcing bar conveyor for a tunnel trolley

Abstract

The utility model provides a kind of reinforcing bar conveyor for tunnel trolley, it is related to tunnel construction equipment field, mainly for solving the problem of reinforcing bar conveying needing operator hand to hold reinforcing bar, occupying artificial in prior art.The reinforcing bar conveyor of the utility model includes driving mechanism and conveying wheel, permanent magnet for magnetizing reinforcing bar is installed in conveying wheel, swing arm is hinged above conveying wheel;Swing arm is driven by telescopic cylinder and can swing up and down in vertical plane, and pressure roller for pressing reinforcing bar is arranged at the free end of swing arm.The reinforcing bar conveyor improves the conveying capacity of reinforcing bar of conveying wheel by permanent magnet and pressure roller structure, solves the problem that reinforcing bar is prone to skidding and shaking during conveying.During conveying, operator does not need to hand to hold reinforcing bar, so the reinforcing bar conveyor further reduces labor intensity, solves the problem of artificial occupation.

Description

Technical Field

[0001] This utility model is specifically a steel bar conveyor for a tunnel trolley, which relates to the field of tunnel construction equipment. Background Technology

[0002] A tunnel trolley is a large-scale tunnel construction equipment, functionally categorized as a rock drilling trolley, wet spraying trolley, fabric-hanging trolley, arch erection trolley, waterproofing membrane trolley, and lining formwork trolley. Among these, arch erection trolleys and waterproofing membrane trolleys require a rebar conveyor to transport the rebar onto the trolley. Existing rebar conveyors mainly consist of a drive mechanism and conveyor wheels. During transport, operators place the end of the rebar on the conveyor wheels, which rotate to transport the rebar. During this process, operators need to manually hold the rebar to prevent slippage due to insufficient friction or the rebar from slipping off the wheels due to vibration. Clearly, while this method of rebar transport is labor-saving, it is extremely time-consuming. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model discloses a steel bar conveyor for tunnel trolleys, the purpose of which is to solve the problem that steel bar conveying requires operators to hold the steel bars by hand, which occupies manpower.

[0004] The present invention adopts the following technical solution: A rebar conveyor for a tunnel trolley includes a drive mechanism and a conveyor wheel. A permanent magnet for magnetically attracting rebar is installed inside the conveyor wheel, and a swing arm is hinged above the conveyor wheel. The swing arm is driven by a telescopic cylinder to swing up and down in a vertical plane, and a pressure roller for pressing down the rebar is provided at the free end of the swing arm.

[0005] Further improve the technical solution: the groove of the conveyor wheel is arc-shaped, and the radius of the groove is equal to the radius of the steel bar.

[0006] Further improved technical solution: Axial holes are arranged in a circumferential array along the conveyor wheel, and permanent magnets are installed in the axial holes.

[0007] Further improvement of the technical solution: The drive mechanism is installed at the rear of the tunnel trolley via a bracket, and the swing arm swings up and down on the side closest to the tunnel trolley under the drive of the telescopic cylinder.

[0008] Further improvements to the technical solution: A pair of guide troughs with a large upper opening and a small lower opening are installed above the conveyor wheel.

[0009] The pressure roller has a groove that contacts the reinforcing bar, and the groove is either arc-shaped or trapezoidal.

[0010] Further improvements to the technical solution: The drive mechanism includes a variable frequency motor or a hydraulic motor.

[0011] Further improvements to the technical solution: The telescopic cylinder includes a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

[0012] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: This invention improves the conveying capacity of the conveying wheel for steel bars by using a permanent magnet and pressure roller structure, thus solving the problem of slippage and shaking of steel bars during the conveying process.

[0013] Since operators do not need to hold the steel bars by hand during the conveying process, this steel bar conveyor further reduces labor intensity and solves the problem of manpower occupation. Attached Figure Description

[0014] Appendix Figure 1 The image shown is a front view of this rebar conveyor.

[0015] Appendix Figure 2 The image shown is a side view of this rebar conveyor.

[0016] Appendix Figure 3 The diagram shown is a schematic diagram of the operation of this rebar conveyor.

[0017] In the attached diagram: 1. Tunnel trolley; 2. Drive mechanism; 3. Conveyor wheel; 4. Permanent magnet; 5. Swing arm; 6. Pressure wheel; 7. Telescopic cylinder; 8. Support; 9. Guide trough plate; 10. Reinforcing steel. Detailed Implementation

[0018] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] A rebar conveyor for a tunnel trolley, relating to the field of tunnel construction equipment, is mainly used to solve the problem of existing rebar conveying methods requiring operators to manually hold the rebars, thus occupying manpower. The composition and working principle of this utility model are described in detail below.

[0020] See attached document Figure 1 and attached Figure 2 The rebar conveyor of this utility model mainly consists of a drive mechanism 2, a conveying wheel 3, a swing arm 5, a pressure wheel 6, and a telescopic cylinder 7. Depending on the site conditions, the drive mechanism 2 can be a variable frequency motor or a hydraulic motor. The telescopic cylinder 7 can be a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder. In this embodiment, the telescopic cylinder 7 is a Φ32 pneumatic cylinder, and the drive mechanism 2 is a TMS-03-160 hydraulic motor with an output torque of 300 N / m and a minimum speed of 32 r / min. The hydraulic motor is mounted on the rear of the tunnel trolley 1 via a bracket 8, and the conveying wheel 3 is mounted on the output shaft of the hydraulic motor, conveying rebar by rotation.

[0021] Unlike existing conveyor wheels, a permanent magnet 4 is installed inside the conveyor wheel 3. In this embodiment, 12 axial holes are arranged circumferentially along the conveyor wheel 3, and permanent magnets 4 are installed in the axial holes. The function of the permanent magnet 4 is to improve the conveying effect by magnetically attracting the reinforcing bar. Its beneficial effects are mainly reflected in two aspects: first, it prevents the reinforcing bar from falling off the conveyor wheel 3 due to vibration; second, it increases the friction through magnetic attraction, preventing the reinforcing bar from slipping on the conveyor wheel 3 due to insufficient friction. In addition, the groove of the conveyor wheel 3 is arc-shaped, and the radius of the groove is equal to the radius of the reinforcing bar. During operation, the groove holds the reinforcing bar, which helps to improve the conveying effect of the conveyor wheel 3 on the reinforcing bar.

[0022] A swing arm 5 is hinged above the conveyor wheel 3, and a telescopic cylinder 7 is hinged in the middle of the swing arm 5. The extension and retraction of the telescopic cylinder 7 is controlled by a foot switch. Driven by the telescopic cylinder 7, the swing arm 5 can swing up and down in the vertical plane near the tunnel trolley 1. A pressure roller 6 is provided at the free end of the swing arm 5. The pressure roller 6 has a groove that contacts the reinforcing bar. The shape of the groove can be arc-shaped or trapezoidal. The function of the pressure roller 6 is to press the reinforcing bar downward. Its beneficial effects are mainly reflected in two aspects: first, it increases the pressure exerted by the reinforcing bar on the conveyor wheel 3, thereby improving the friction and conveying force of the conveyor wheel 3; second, it prevents the reinforcing bar from shaking and falling off the conveyor wheel 3 during conveying.

[0023] To facilitate the operator in smoothly placing the steel bars into the groove of the conveyor wheel 3, a pair of guide trough plates 9 with a large upper opening and a small lower opening are also provided above the conveyor wheel 3.

[0024] Working principle: Refer to the appendix Figure 3During operation, the operator places the end of the reinforcing bar 10 onto the conveyor wheel 3. Under the magnetic attraction of the guide plate 9 and the permanent magnet 4, the end of the reinforcing bar 10 falls into the groove of the conveyor wheel 3. Then, the operator steps on the switch to extend the telescopic cylinder 7. At this time, the swing arm 5 swings downward under the drive of the telescopic cylinder 7, causing the pressure roller 6 to press on the end of the reinforcing bar 10, applying pressure to the reinforcing bar 10. Under the action of pressure, the rear end of the reinforcing bar 10 is suspended, forming a lever structure, further increasing the pressure exerted by the reinforcing bar 10 on the conveyor wheel 3, as well as the conveying capacity of the conveyor wheel 3 on the reinforcing bar 10. At the same time, the grooves of the pressure roller 6 and the conveyor wheel 3 hold the reinforcing bar 10 in place, preventing the reinforcing bar 10 from shaking during conveying.

[0025] Since the steel bar 10 does not slip or shake during transportation, there is no need for operators to hold the steel bar 10 by hand, thus solving the problem of manpower occupation.

[0026] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steel bar conveyor for a tunnel trolley, comprising a drive mechanism and conveying wheels, characterized in that: A permanent magnet for magnetically attracting steel bars is installed inside the conveyor wheel, and a swing arm is hinged above the conveyor wheel; the swing arm is driven by a telescopic cylinder and can swing up and down in the vertical plane, and a pressure roller for pressing down the steel bars is set at the free end of the swing arm.

2. The steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: The groove of the conveyor wheel is arc-shaped, and the radius of the groove is equal to the radius of the reinforcing bar.

3. The steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: Axial holes are arranged in a circumferential array along the conveyor wheel, and permanent magnets are installed in the axial holes.

4. The steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: The drive mechanism is mounted on the rear of the tunnel trolley via a bracket, and the swing arm swings up and down on the side closest to the tunnel trolley under the drive of the telescopic cylinder.

5. A steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: Above the conveyor wheel, there is a pair of guide troughs with a large upper opening and a small lower opening.

6. A steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: The pressure roller has a groove that contacts the reinforcing bar, and the groove is either arc-shaped or trapezoidal.

7. A steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: The drive mechanism includes a variable frequency motor or a hydraulic motor.

8. A steel bar conveyor for a tunnel trolley as described in claim 1, characterized in that: The telescopic cylinder includes a hydraulic cylinder, a pneumatic cylinder, or an electric cylinder.

Images