CN111634806A - A wheeled crane for unloading in small-section tunnels - Google Patents

Abstract

The invention discloses a wheeled crane used for unloading materials in small-section tunnels. The crane is mainly divided into five major systems: gantry, walking, steering, hoisting and power. The gantry system is composed of frame beams, uprights and lifting cylinders. The walking system consists of a walking beam, a walking drive axle, a braking bridge and a walking tire. The steering system consists of a steering cylinder and a walking frame around a slewing bearing. The hoisting system consists of a hoisting beam and a spreader. The power system consists of batteries, motor control boxes, Electric motor, hydraulic pump, etc. The lifting, walking, steering and hoisting of the whole crane are controlled through the driving operation panel. This patent solves the problem that various materials in small-section tunnels are difficult to unload with high efficiency, and has strong overall work performance, high safety, simple operation and strong practicability.

Description

A wheeled crane for unloading in small-section tunnels

technical field

The invention relates to the technical field of tunnel construction, in particular to a wheeled crane used for unloading in small-section tunnels.

Background technique

With the expansion and development of domestic cities, small-diameter tunnels have developed rapidly as an important way to relieve urban sewage and drainage pressure. During construction in tunnels, the efficiency of short-distance transportation of materials and unloading will directly affect the progress of the project.

The diameter of conventional tunnels is large, and the transportation and unloading of materials required in the tunnel can be carried out by conventional methods such as small vehicles and manual transportation. When the diameter of the tunnel is less than 4m, conventional cranes such as small vehicles cannot be put into use, and the efficiency of manual transportation is too low. Not applicable.

For the unloading of construction materials for small-diameter tunnels, conventional methods have many limitations, high costs, and unsatisfactory work efficiency, which seriously affects the construction period.

SUMMARY OF THE INVENTION

In order to overcome the technical defect that conventional cranes cannot be put into use for the unloading operation of small-diameter tunnel construction materials in the prior art, the present invention provides a wheeled crane for unloading materials in small-section tunnels. It is a plane, the walking surface in the tunnel is a circular curved surface, and the tire angle of the walking wheel set can be adjusted within the range of 0-60° to adapt to different working environments, which solves the above technical problems.

The present invention achieves the above objects through the following technical solutions, a wheeled crane for unloading in small-section tunnels, including an operating table, a gantry, a walking system, a steering system, a hoisting system and a power system.

The gantry is composed of a transverse main beam, four variable-height upright leg beams and longitudinal beams. The beams are connected by high-strength bolts. The transverse main beam is in the form of a steel box beam, and there are walking rails and buffer blocks on it. , It can realize the movement of 400mm on the left and right, which is beneficial to the hook to store the material aside, and can meet the lifting requirements of small space. The four height-changing outriggers are provided with a height-changing mechanism on the outside, which is composed of a telescopic column, a telescopic sleeve and a column cylinder. The operator can control the expansion and contraction of the column cylinder in the driver's cab to achieve height adjustment, so as to ensure that under different cross-slope conditions The main frame is working in a horizontal state, which improves the construction capacity and passing capacity of the gantry crane on the tunnel walking passage with height difference on both sides of the line.

The walking system consists of a walking beam, a walking drive axle, a braking bridge and a walking wheel group. The walking wheel group has a total of 4 wheel groups, of which 2 are driving wheel groups and 2 are driven wheel groups. The driving wheel group is mainly composed of Hydraulic drive motor, travel reducer, wheel load and tire composition. There is an infrared limit on the outside of each wheel set. When the gantry crane has obstacles during operation, it will automatically stop to prevent the running wheel set and the anti-collision force. The driving wheel set is mainly composed of hydraulic drive motor, travel reducer, Wheel load, tires, etc.

The steering system consists of a sensor, a controller, a hydraulic power station, a steering cylinder and a slewing mechanism. The steering wheel located on the operating console is manipulated to control the steering of the wheeled crane. The signal output value of the steering wheel is used to finally control the size and magnitude of the crane's steering angle. The direction and the size of the steering angle are adjusted by controlling the telescopic amount of the steering cylinder, so that the front and rear walking wheels can be steered at any angle and turned 90°.

The hoisting system consists of a hoisting beam and a spreader. The spreader is a set of two hoist hooks, which are installed on the walking track of the hoisting beam. The two hoist hooks can be controlled independently or in linkage to meet different lifting requirements. . The secondary positioning method combining the whole machine running and the vertical fine-tuning of the spreader is applied, and the handle is controlled with high precision to ensure fast and accurate positioning of the hoisting.

The power system is composed of battery panel, electrical control box, hydraulic control box and electric motor. The crane is equipped with the electric motor, which is arranged on the side of the crane, and is connected with the DC charging base of the high-voltage box by cables.

In the above-mentioned wheeled crane for unloading in small-section tunnels, the outriggers can achieve heightening action by controlling the telescopic amount of the column cylinder.

The above-mentioned wheeled crane used for unloading in small-section tunnels, the wheeled crane has a flat surface on the outside of the tunnel, a circular curved surface on the inside of the tunnel, and the tire angle of the walking wheel set can be 0-60. ° range to adjust to suit different working environments.

The above-mentioned wheeled crane for unloading in small-section tunnels, when the traveling wheel group is turned, the steering oil cylinder of the crane controls the size and direction of the steering angle of the crane's steering cylinder to drive the traveling frame to rotate around the slewing bearing. , so that the traveling direction of the crane is consistent with the tangential direction of the tunnel.

In the above-mentioned wheeled crane for unloading in small-section tunnels, an infrared limit sensor is provided outside the traveling wheel set to detect obstacles encountered during traveling.

The above-mentioned wheeled crane for unloading in small-section tunnels, the hoisting beam can be moved by 500mm on the left and right through the traversing oil cylinder, and the two hoist hooks provided on the hoisting beam can be independently controlled and linked. control.

In general, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects: the present invention patent is a wheeled crane for unloading in small-section tunnels, which can lift, travel, turn and The hoisting operation is controlled by the driving operation panel. The walking surface outside the tunnel is a flat surface, and the walking surface inside the tunnel is a circular curved surface. The tire angle of the walking wheel set can be adjusted within the range of 0-60° to adapt to different working environments, which solves the traditional problem. The technical problem that the crane cannot discharge materials efficiently in small-section tunnels is simple to operate and has high safety performance.

Description of drawings

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, wherein:

1 is a schematic diagram of the overall structure of a wheeled crane for unloading in small-section tunnels according to the present invention;

2 is a front view of a wheeled crane for unloading in small-section tunnels according to the present invention;

Figure 3 is a left side view of a wheeled crane for unloading in small-section tunnels according to the present invention;

4 is a top view of a wheeled crane for unloading in small-section tunnels according to the present invention;

5 is a schematic view of the construction of the wheeled crane in the tunnel according to the present invention;

In the picture: 1-operating table, 2-hydraulic power station, 3-steering cylinder, 4-travel wheel, 5-pillar cylinder, 6-traverse cylinder, 7-lithium battery panel, 8-gantry, 9-hoisting Beam, 10-hydraulic control box, 11-electrical control box, 12-hoist hook.

Detailed ways

As shown in Figures 1 to 4, it is a schematic diagram, front view, left side view and top view of the overall structure of a wheeled crane for unloading in small-section tunnels, including an operating table 1, a gantry 8, a traveling system, Steering system, lifting system and power system.

The gantry 8 is composed of a transverse main beam, four variable-height column leg beams and longitudinal beams, and the beams are connected by high-strength bolts. It can realize the movement of 400mm on the left and right sides. The four height-changing legs are provided with a height-changing mechanism on the outside, which is composed of a telescopic column, a telescopic sleeve and a column cylinder 5.

The walking system consists of a walking beam, a walking drive axle, a braking bridge and a walking wheel group 4. The walking wheel group 4 has a total of 4 wheel groups, of which 2 are driving wheel groups and 2 are driven wheel groups. The driving wheel group is mainly composed of Hydraulic drive motor, travel reducer, wheel load and tire composition.

The steering system is composed of sensors, controllers, hydraulic power station 2, steering cylinder 3 and a slewing mechanism. It controls the steering wheel located on the console 1 to control the steering of the wheeled crane, and finally controls the steering angle of the crane through the signal output value of the steering wheel. The size and direction of the steering wheel and the steering angle are adjusted by controlling the telescopic amount of the steering oil cylinder 3, so that the front and rear walking wheel groups can be steered at any angle and turned 90°.

The hoisting system is composed of a hoisting beam 9 and a spreader. The spreader is a set of two hoist hooks 12, which are installed on the walking track of the hoisting beam 9. The two hoist hooks 12 can be controlled independently and in linkage.

The power system is composed of battery panel 7, electrical control box 11, hydraulic control box 10 and electric motor. The crane is equipped with the electric motor, which is arranged on the side of the crane, and is connected with the DC charging base of the high-voltage box by cables.

The processing, production and hoisting operation flow of a wheeled crane used for unloading in a small-section tunnel according to the present invention is as follows.

Processing and production process: first complete the preparation of each component, including hydraulic cylinder, profile processing and other supporting components; assemble according to the drawings, first assemble the gantry 8, and then improve each part in turn; after the assembly is completed, it needs to be checked and accepted, including Appearance and appearance inspection, qualification inspection of parts and performance parameters, hoisting test and debugging inspection; put into use after passing the acceptance.

Hoisting operation process: After the wheeled crane is assembled and debugged on the ground, it is hoisted into the well and travels to the unloading area. The column cylinder 5 is adjusted to adapt to the space requirements of different tunnels, and the materials are transported to the tunnel through the shield supporting battery car and the flatbed truck. Near the inner unloading area, move the wheeled crane to the material stacking area of the flatbed truck, and carry out the lifting, translation and unloading of the materials in sequence according to the requirements of the plan. After the material unloading in this section is completed, the crane follows the facilities in the tunnel to remove the working face Proceed to the next unloading area, cycle construction to the tunnel exit in turn, and complete the material unloading process in this area. As shown in Figure 5, it is a schematic diagram of the construction of the wheeled crane in the tunnel.

Those skilled in the art can easily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, etc., All should be included within the protection scope of the present invention.

Claims (6)

1. A wheeled crane for discharging in a small-section tunnel is characterized by comprising an operating platform (1), a portal frame (8), a traveling system, a steering system, a hoisting system and a power system;

the portal (8) consists of a transverse moving main beam, four height-variable upright post supporting leg beams and longitudinal beams, all the beams are connected by high-strength bolts, the transverse moving main beam adopts a steel box beam structure form, a walking track and a buffer stop block are arranged on the transverse moving main beam, the left and right movement of 400mm can be realized, and height-variable mechanisms are arranged outside the four height-variable upright posts and consist of telescopic posts, telescopic sleeves and upright post oil cylinders (5);

the walking system consists of a walking beam, a walking drive axle, a brake axle and a walking wheel set (4), wherein the walking wheel set (4) comprises 4 wheel sets, 2 of the 4 wheel sets are driving wheel sets, 2 of the driving wheel sets are driven wheel sets, and the driving wheel sets mainly consist of a hydraulic driving motor, a walking speed reducer, a wheel load and tires;

the steering system consists of a sensor, a controller, a hydraulic power station (2), a steering oil cylinder (3) and a slewing mechanism, the steering wheel positioned on the operating platform (1) is controlled to control the steering of the wheel crane, the size and the direction of the steering angle of the crane are finally controlled through the signal output value of the steering wheel, the size of the steering angle is adjusted through controlling the telescopic amount of the steering oil cylinder (3), and the front and rear travelling wheel sets can steer at any angle and turn at 90 degrees;

the hoisting system consists of a hoisting beam (9) and a hoisting tool, the hoisting tool is a group of two hoist lifting hooks (12) and is arranged on a traveling track of the hoisting beam (9), and the two hoist lifting hooks (12) can be controlled independently and in linkage;

the power system consists of a storage battery panel (7), an electrical control box (11), a hydraulic control box (10) and a motor, wherein the crane is provided with the motor by itself, arranged on the side of the crane and connected with a direct current charging seat of the high-voltage box by a cable.

2. The wheeled crane for discharging in a small-section tunnel according to claim 1, wherein the legs can be moved to a height by controlling the amount of extension and retraction of the mast cylinders (5).

3. A wheeled crane for discharging in a small cross section tunnel according to claim 1, characterized in that the running surface of the wheeled crane outside the tunnel is a plane, the running surface in the tunnel is a circular curved surface, and the tire angle of the running wheel group (4) can be adjusted within the range of 0-60 ° to adapt to different working environments.

4. A wheeled crane for discharging in a small-section tunnel according to claim 3, characterized in that the traveling wheel set (4) controls the steering cylinder (3) of the crane to drive the traveling frame to rotate around the slewing bearing by the steering angle and the direction through the signal output value of the steering wheel when the traveling wheel set is steered, so that the traveling direction of the crane is consistent with the tangential direction of the tunnel.

5. The wheeled crane for discharging in a small-section tunnel according to claim 4, characterized in that an infrared limit sensor is arranged outside the traveling wheel set (4) to detect obstacles encountered during traveling.

6. The wheel crane for discharging in a small-section tunnel according to claim 1, wherein the hoisting beam (9) can move 500mm left and right through the traversing cylinder (6), and the two hoist hooks (12) arranged on the hoisting beam (9) can be controlled independently and in a linkage manner.

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