CN101691197A - Self-propelled lifter - Google Patents

Abstract

The invention discloses a self-propelled lifter, which comprises an upper vehicle part and a lower vehicle part. The upper vehicle part further comprises a basket (31) which can be moveably arranged at the main body of the self-propelled lifter and also comprises a first power unit, a second power unit and a control unit for supplying power for the upper vehicle part or the lower vehicle part. During the working of the upper vehicle part, the control unit controls the second power unit to start when the first power unit stops working, and thus, dangers caused by sudden power loss of the upper vehicle part are prevented; meanwhile, the self-propelled lifter can be supplied with power not only by the first power unit but also through the second power unit, so various power output modes are provided; and being capable of going down to a depth of about 110 meters, the basket (31) of the self-propelled lifter of the invention can meet the use requirement under specific working conditions.

Description

A self-propelled lift

technical field

The invention relates to the field of engineering machinery, in particular to a self-propelled lift.

Background technique

With the rapid development of my country's economic construction, the market demand for construction machinery, especially self-propelled lifts is increasing.

In some production and operation occasions, regular maintenance and overhaul of equipment is required. For example, when equipment such as permanent ship locks in water conservancy projects are overhauled, maintained and observed, staff need to enter the corridor of the ship lock to overhaul some equipment. If it is adopted to build working platforms such as scaffolding, the staff need to climb the scaffolding to enter the workplace, the labor intensity is relatively high, and the tools or materials used during maintenance also need to be completed by manpower or other lifting tools. Complex, waste a lot of manpower and material resources, and work efficiency is low.

In order to solve the above problems, self-propelled elevators are often used in some maintenance or rescue operations to transport the staff to the designated location, so as to facilitate the staff to reach the working surface smoothly, and perform observation, inspection, maintenance and rescue; at the same time, The required materials and tools can be transported to the working face for repair and replacement of equipment.

Most of the self-propelled lifts used in construction and rescue sites are relatively simple self-propelled lifts, mostly driven by motors or hydraulically driven, and mostly fixed, and transported to the construction site by other vehicles when used. After the completion, it is transported away from the construction site. Self-propelled elevators generally do not have the function of self-propelled, which increases the cost of transportation. A typical self-propelled elevator is generally driven by an internal combustion engine. During the walking process of the self-propelled elevator, the internal combustion engine provides power for the walking system. The working system provides power. In this way, when the self-propelled lift is in the process of lifting, when the internal combustion engine fails or lacks oil and the work stops, the self-propelled lift may stop in the air, which not only affects its normal work, but also may affect the work of the self-propelled lift. danger to persons.

Therefore, how to improve the working performance of the self-propelled lift, and improve the working reliability and safety of the self-propelled lift has become an urgent problem to be solved by those skilled in the art.

Contents of the invention

The purpose of the present invention is to provide a self-propelled lift, which has good performance, high working reliability and safe use.

In order to solve the above technical problems, the present invention provides a self-propelled lift, which includes a boarding part and a getting off part, the boarding part further includes a lifting part, and the lifting part is movably installed on the body of the self-propelled lift , also includes, a first power device for providing power for the boarding part or the getting off part; a second power device and a control device; during the working process of the boarding part, when the first power When the device stops working, the control device controls the second power device to start.

Preferably, the first power device is an internal combustion engine, and the second power device is an electric motor; the internal combustion engine selectively drives the getting-on part or the getting-off part through a first hydraulic pump, and the motor drives through a first hydraulic pump Two hydraulic pumps drive the boarding section.

Preferably, a power switching protection device is also included; when any one of the first power device and the second power device is working, the sensor sends a signal to the power switching protection device, and the control device controls the other A power unit stopped working.

Preferably, the lifting part is a hanging basket; the self-propelled lift may also include a drum installed on the body, and a hoist wound around the drum, one end of the hoist is fixed to the hanging basket hanging frame.

Preferably, the hanging basket and the hanging frame are connected by lock pins.

Preferably, a connecting rod is further included, the first end of the connecting rod is hinged to the hanging frame, the second end of the connecting rod is hinged to the body, and the hanging basket is installed on the body through the connecting rod.

Preferably, an anti-collision device is installed on the outer periphery of the hanging basket.

Preferably, the anti-collision device is a rubber guide wheel.

Preferably, an angle sensor for detecting its inclination in the vertical direction is installed on the hanging basket, and the angle sensor transmits a signal of the detected inclination angle to the hanging basket controller, and the hanging basket controller sends the The inclination angle is compared with a preset first angle, and when the inclination angle is greater than the first angle, the hanging basket controller controls the hanging basket to stop moving.

Preferably, the getting off part includes an outrigger cylinder installed under the chassis to support the body so that it is lifted off the ground.

The self-propelled lift provided by the present invention includes a boarding part, a getting off part, a first power device for providing power for the boarding part or the getting off part, a second power device and a control device. During part of the working process, when the first power device stops working, the control device controls the second power device to start. In this way, the danger of the boarding part due to sudden loss of power is avoided, and the use safety and working reliability of the self-propelled lift are improved, thereby improving the performance of the self-propelled lift.

In a preferred embodiment, the self-propelled lift provided by the present invention may also include a power switching protection device. The device sends a signal, the control device processes the signal, and controls the other power device to stop working. In this way, the first power unit and the second power unit are prevented from working at the same time, so that only one power unit is working at the same time, thereby avoiding the operation of the power unit under no-load conditions, saving energy and reducing costs.

In another specific embodiment, the hanging basket provided by the present invention works together through the winch, the roller and the connecting rod. When the hanging basket is working, the hanging basket is first pushed to a certain distance from the body through the connecting rod, and then passed The function of the winch and the roller will lower the hanging platform to a distance of about 110 meters, and through the pushing action of the oil cylinder on the connecting rod, the hanging platform will be lifted up to a height of about 4 meters to meet the use in specific occasions Require.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of a specific embodiment of the self-propelled lift provided by the present invention;

Fig. 2 is a structural schematic diagram of a specific embodiment of the self-propelled lift provided by the invention in a top view direction.

Detailed ways

The core of the present invention is to provide a self-propelled lift, which has good performance, high working reliability and safe use.

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Figure 1 and Figure 2, Figure 1 is a schematic diagram of the mechanism of a specific embodiment of the self-propelled lift provided by the present invention; Figure 2 is a structural schematic diagram of a specific embodiment of the self-propelled lift provided by the invention in the top view direction.

In a specific embodiment, the self-propelled lift provided by the present invention includes a first power device, a second power device, and a control device for providing power for the boarding part or the getting off part. During the working process of the boarding part of the self-propelled lift, when the first power device stops working, the control device controls the second power device to start.

The above-mentioned first power unit can be an internal combustion engine 1, and the internal combustion engine 1 can selectively drive the boarding part or the getting off part through the first hydraulic pump 71; Drive on the car part. Like this, use internal combustion engine 1 as the power source part of the first power plant, utilize the advantage that internal combustion engine 1 power is bigger, make it both can drive the motion of each device of boarding part, can drive the motion of getting off part again; 2 As the power source part of the second power device, the electric motor 2 is used to facilitate the control, the advantages of stable power output and the ability to realize stepless speed change, so that it drives the work of the boarding part. The above-mentioned dual-power system in combination with the internal combustion engine 1 and the electric motor 2 not only has good performance, but also has high economy, thereby improving the overall performance of the self-propelled lift; at the same time, when the power supply cannot be provided in the actual working environment , the normal operation of all systems of the self-propelled lift can be realized through the action of the internal combustion engine 1, thereby improving the applicability of the self-propelled lift and providing multiple options for power modes.

Obviously, the power source component of the above-mentioned first power device is not limited to the internal combustion engine 1, and it can also be other power components conventionally used in the art, and the power source component of the above-mentioned second power device is not limited to the electric motor 2, which It can also be other power components conventionally used in the art; meanwhile, the power source components of the above-mentioned first power plant and the power source components of the second power plant are not limited to the combined form of the internal combustion engine 1 and the electric motor 2, and can also be other power components. form, such as the form of dual internal combustion engines, etc.

The hanging basket 31 of the above-mentioned boarding part is connected with the hanging frame 32 through a locking pin; the locking pin is arranged on the top of the hanging basket 31 and is connected with the joint of the hoisting wire rope. The staff or materials that need to reach the working surface will be raised or lowered through the hanging basket 31 to improve the safety of the self-propelled elevator, and the hanging basket 31 is connected with the hanging frame through a lock pin. When removing from the elevator, it is only necessary to open the lock pin between the hanging basket 31 and the hanging frame 32, thereby realizing the dismounting of the hanging basket 31 more conveniently, and hanging baskets 31 of different models and sizes can be installed.

The above-mentioned boarding part refers to each part of the self-propelled lift except the getting-off part that needs to be driven by a power device. Specifically can include:

Hanging basket lifting device; the above-mentioned internal combustion engine 1 provides power for the first hydraulic pump 71, thereby driving the hydraulic motor 5 on the drum 6, and the output power of the hydraulic motor 5 drives the drum to rotate, thereby pulling the roll of the hanging basket 31 Winding on the drum 6 to realize the rising or falling of the hanging basket 31.

In the above hanging basket lifting device, a connecting rod 33 may also be included, the first end of the connecting rod 33 is hinged to the hanging frame 32, and the second end is hinged to the body, and the hanging basket 31 passes through the connecting rod 33 installed on the body. In this way, the hanging basket 31 is through the joint action of the winch, the drum 6 and the connecting rod 33. When the hanging basket 31 is working, the hanging basket 31 is first pushed to a certain distance from the body through the connecting rod 33, and then the hanging basket 31 is pushed to a certain distance from the body by the winch and the drum 6. function, the hanging basket 31 is lowered down to a distance of about 110 meters, and the hanging basket 31 is lifted up to a height of about 4 meters through the pushing action of the oil cylinder on the connecting rod 33, so as to meet the use requirements in specific occasions.

Platform slewing device: A slewing platform is generally installed on the chassis of the self-propelled lift, so that personnel or materials can be transported to a designated location through the slewing platform turning in the horizontal direction. The first hydraulic pump 71 is powered by the internal combustion engine 1 to drive the motor on the slewing platform, and the output power of the motor drives the slewing platform to rotate in the horizontal direction.

Luffing device: In order to adjust the distance between the hanging basket 31 and the working surface more quickly and make the operation more convenient, there is usually a luffing device on the self-propelled lift. A lift cylinder is installed at the root of the pull rod 33 of the self-propelled elevator basket 31, and the above-mentioned internal combustion engine 1 or electric motor 2 provides power for the lift cylinder, so that the pull rod 31 is driven around between the pull rod 31 and the boom 32 through the expansion and contraction of the lift cylinder. The hinged shaft of the hanging basket rotates to realize the luffing motion of the hanging basket 33 on the vertical plane. The luffing device in the self-propelled lift provided by the present invention adopts the four-suspension-point luffing design of the double-sided boom 32, and its characteristic is that the pull rod 33 remains horizontal in the boom 32 at any pitch angle, thereby ensuring The four stay ropes are always in a better stressed state when suspended vertically, thereby improving the life span of the stay ropes.

In addition to the above-mentioned devices, the boarding part of the self-propelled lift may also include other parts, which will not be repeated here.

In this way, during the working process of the boarding part of the self-propelled lift, when the first power device stops working, the control device controls the second power device to start. It avoids the danger of the boarding part due to sudden loss of power, improves the use safety and work reliability of the self-propelled lift, thereby improving the performance of the self-propelled lift. Further improvements can also be made to the self-propelled lift provided by the present invention.

In another specific embodiment, the self-propelled lift provided by the present invention may also include a power switching protection device. When any power device is working, the sensor sends a signal to the power switching protection device, and the power switching protection device processes the signal , and control another power unit to stop working. Specifically, when the first power device is in the working state, the sensor detects a signal corresponding to the operation of the first power device, and transmits the signal to the power switching protection device, and processes the signal through the power switching protection device, and Control the second power control device to stop working; and vice versa. In this way, only one power unit is working at the same time, avoiding two systems working at the same time, thereby avoiding no-load operation of the power unit, saving energy and reducing costs.

Above-mentioned hanging basket 31 can have a fence door, and limit switch is arranged on the fence door. The limit switch can ensure that the fence door of the hanging basket 31 can be opened only when the surrounding environment is relatively safe, thereby ensuring the operating safety of the staff, thereby further improving the reliability of the self-propelled lift.

A protective plate can be installed on the top of the above-mentioned hanging basket 31. In the working environment of the construction site, hazards such as falling objects are likely to occur. Installing a protective plate on the top can effectively prevent the threat of falling objects to the safety of workers, thereby significantly improving the safety performance of the self-propelled lift.

Obviously, the above-mentioned protective plate should have a certain strength.

The above-mentioned hanging basket 31 can be made of all stainless steel materials, so that it has better comprehensive performance. Of course, the material of the main body of the hanging basket 31 is not limited to stainless steel, and can also be other materials commonly used in this field. The surface of the hanging basket 31 can be galvanized, so that the hanging basket 31 has a lighter weight and higher strength; and, the surface of the hanging basket 31 after the galvanizing treatment has corrosion resistance, thereby significantly improving Extended the service life of hanging basket 31.

The height of the fence around the above hanging basket 31 can be about 110 centimeters, this height can make the fence reach the position above the waist of ordinary adults, avoiding the staff from accidentally falling from the hanging basket 31, thereby further improving the safety of the self-propelled lift. safety performance. Apparently, the height of the fence is not limited to 110 centimeters, and may be higher than this value, or appropriately lower than this value.

An anti-collision device may be installed on the outer periphery of the above-mentioned hanging basket 31 . When the hanging basket 31 is raised or lowered to a specified height, it generally needs to be driven by the slewing platform to rotate in the horizontal direction, or needs to swing on the vertical plane under the action of the lifting cylinder. In the process of turning and swinging, the hanging basket 31 may collide with other devices on site, and the anti-collision device can protect the people or materials in the hanging basket 31 from damage caused by the collision, thereby improving the safety of the self-propelled lift sex.

The above-mentioned anti-collision device can be a rubber guide wheel. When other objects collide with the hanging basket 31, the rubber guide wheel can play the role of buffering and impact force transfer, and the rubber guide wheel is widely used in this field, and the cost is relatively low. And it is easy to maintain and replace, thereby saving the maintenance cost.

Obviously, the above-mentioned anti-collision device is not limited to the rubber guide wheel, and its main function is to protect the hanging basket 31 through a device with a certain buffer force. The anti-collision device can be any device with a buffering effect, and its specific form and structural size should not be limited by this specification.

The hanging basket 31 is equipped with an angle sensor for detecting the inclination angle of the hanging basket 31 in the vertical direction, and the angle sensor transmits the signal of the detected inclination angle to the hanging basket controller, and the hanging basket controller compares the inclination angle with the hanging basket controller. Compared with the preset first angle, when the inclination angle is greater than the first angle, the hanging basket controller controls the hanging basket 31 to stop moving. In this way, when the angle of inclination of the hanging basket 31 in the vertical direction is greater than the angle value of the first angle, the hanging basket 31 is stopped to continue to rise or fall by the hanging basket controller, so as to avoid that the personnel in the hanging basket 31 are not allowed to move due to the inclination of the hanging basket 31. Or the material is in danger, which further improves the safety of the self-propelled lift.

The value range of the above-mentioned first angle is 8°-11°. When the angle of inclination is larger than this size range, danger is more likely to occur, and when the angle value is smaller than this angle range, the meaning of measurement and control is small. Therefore, considering the actual working conditions and equipment costs and other factors, choose the first one above. range of angles. Apparently, the range of the above-mentioned first angle is not limited to 8°-11°, and may also be smaller than this angle range or appropriately larger than this range.

The getting off part provided by the self-propelled lift provided by the present invention may include the outrigger cylinder 7 installed under the chassis to support the body so that it is lifted off the ground.

The self-propelled lift provided by the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. a self-propelled elevator comprises upper frame part and lower frame part, and described upper frame part further comprises Lift Part, and described Lift Part is installed on the body of described self-propelled elevator movably, it is characterized in that, also comprise,

First engine installation is with thinking that described upper frame part or described lower frame part provide power;

Second engine installation and control setup;

In the working process of described upper frame part, when described first engine installation quit work, described control setup was controlled described second engine installation and is started.

2. self-propelled elevator according to claim 1 is characterized in that, described first engine installation is combustion engine (1), and described second engine installation is electrical motor (2); Described combustion engine (1) selectively drives described upper frame part or described lower frame part by first Hydraulic Pump (71), and described electrical motor (2) drives described upper frame part by second Hydraulic Pump (72).

3. self-propelled elevator according to claim 2 is characterized in that, also comprises the powershift fender guard; When the arbitrary engine installation in described first engine installation and described second engine installation was worked, sensor sent signal to described powershift fender guard, and described control setup is controlled another engine installation and quit work.

4. according to each described self-propelled elevator of claim 1 to 3, it is characterized in that described Lift Part is hanging basket (31); Described self-propelled elevator can also comprise the cylinder (6) that is installed on described body, and the elevator that is wound in described cylinder (6), and an end of described elevator is fixed in the hanging box (32) of described hanging basket (31).

5. self-propelled elevator according to claim 4 is characterized in that, described hanging basket (31) is connected by lock pin with described hanging box (32).

6. self-propelled elevator according to claim 5, it is characterized in that also comprise connecting rod (33), first end of described connecting rod (33) is articulated in described hanging box, its second end is articulated in described body, and described hanging basket (31) is installed on described body by described connecting rod (33).

7. self-propelled elevator according to claim 6 is characterized in that, the periphery of described hanging basket (31) is equipped with the erosion control collision device.

8. self-propelled elevator according to claim 7 is characterized in that, described erosion control collision device is the rubber track adjusting wheel.

9. according to each described self-propelled elevator of claim 5 to 8, it is characterized in that, be equipped with on the described hanging basket (31) and be used to detect its angular transducer at the vertical direction inclination angle, described angular transducer transfers to the hanging basket controller with the signal of detected inclination angle angle, described hanging basket controller is compared described inclination angle angle with predefined first angle, when described inclination angle angle during greater than described first angle, described hanging basket controller is controlled described hanging basket (31) and is stopped action.

10. according to each described self-propelled elevator of claim 1 to 3, it is characterized in that described lower frame part comprises the support oil cylinder (7) that is installed on the below, chassis,, make it break away from ground to support described body.

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