CN206307974U - A kind of fluid pressure type fan frequency converter changes special purpose device - Google Patents

Abstract

The utility model discloses a special device for changing a frequency converter of a hydraulic fan, which comprises a base, a scissor-type inner gallows, a scissor-type outer gallows and a workbench; the base is provided with a bottom slide rail, and the workbench is provided with a top slide rail ;The lower end of the scissor-type inner gallows is connected to the bottom slide rail through the bottom slider, and the upper end is connected to the top slide rail through the top slider; the upper and lower ends of the scissor-type outer gallows are respectively hinged with the workbench and the base; A hydraulic plunger is set between the gallows and the scissor-type outer gallows, and a hydraulic control device for controlling the hydraulic plunger is set on the base; a work frame is set above the workbench, and a load-bearing steel plate is slid in the work frame. The side is provided with a screw push rod. The utility model can be operated by a single person, can be adapted to work in a narrow space, and can be adjusted more finely. The inverter can be moved to the load-bearing steel plate, moved up and down or left and right to complete the replacement or maintenance work, improve the maintenance efficiency of the fan, and have significant economic benefits.

Description

A special device for replacing the frequency converter of a hydraulic fan

technical field

The utility model relates to the field of fan converter replacement, in particular to a hydraulic fan converter replacement special device.

Background technique

Because wind energy is a renewable green energy, countries all over the world pay attention to it. In recent years, the application of wind energy has developed rapidly, and the installed capacity of wind turbines is changing with each passing day. With the increase of wind turbine running time, most of the wind turbines have exceeded the warranty period, various equipment failures are increasing, and the operation and maintenance tasks are increasing. Since the maintenance technology of large-scale wind power generation is an emerging industry, the development of wind turbine maintenance technology is relatively slow, and the current maintenance professional equipment and technology are backward, especially the lack of special equipment suitable for wind turbine maintenance.

The frequency converter inside the wind turbine nacelle is an important equipment for wind turbines. Its maintenance and replacement are important parts of unit maintenance. The interior space of the nacelle is small. At present, the replacement is mainly done manually, and the technology is backward. In order to improve maintenance efficiency and reduce downtime, special equipment is needed. Improve maintenance efficiency and safety.

At present, there are a large number of specialized equipment in the maintenance of thermal power units and hydropower units, but in the maintenance of wind power units, the development of specialized equipment lags behind. Especially inside the engine room, due to the narrow space of the engine room, the equipment is mainly carried up and down by personnel. Therefore, higher requirements are put forward for the main maintenance equipment inside the engine room. The equipment is required to be easy to use, preferably manually operated, and light in weight.

The replacement of the frequency converter inside the engine room generally requires four people to work at the same time, but due to the small space inside the engine room, it is very difficult for four people to operate, and there are certain safety hazards. Due to the manual operation, it takes a long time to replace the inverter and the production efficiency is low, which seriously affects the maintenance efficiency of the wind turbine and the availability of the wind turbine.

At present, there is no special device for replacing the frequency converter inside the fan nacelle at home and abroad, and it is urgent to develop such a special device to improve maintenance efficiency.

Utility model content

The purpose of this utility model is to provide a special device for replacing the frequency converter of a hydraulic fan, which solves the problem that the current frequency converter inside the wind turbine cabin needs to be operated in the cabin, which results in a long time for replacing the frequency converter and low production efficiency, which seriously affects the maintenance of the fan. Issues of efficiency and turbine availability.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

The utility model is a special device for replacing a hydraulic fan frequency converter, comprising a base, a scissor-type inner gallows, a scissor-type outer gallows and a workbench; the base is provided with a bottom slide rail, and the workbench is provided with a top Slide rail; the lower end of the scissor-type inner gallows is connected with the bottom slide rail through the bottom slider, and the upper end is connected with the top slide rail through the top slider; the lower end of the scissor-type inner gallows is connected with the bottom The slider is hinged, and the upper end is hinged with the top slider; the upper and lower ends of the scissor-type outer gallows are respectively hinged with the workbench and the base; the frame body of the scissor-type inner gallows and the scissor-type outer gallows Hinged to realize vertical expansion and contraction; a hydraulic plunger is arranged between the scissor-type inner gallows and the scissor-type outer gallows, and a hydraulic control device for controlling the hydraulic plunger is arranged on the base; A work frame is set above the workbench, and a load-bearing steel plate is slidably arranged in the work frame, and a screw push rod is set on one side of the work frame; the screw push rod is movably connected with the load-bearing steel plate, It can realize the removal or retraction of the load-bearing steel plate in the work frame.

Further, the working frame includes a front baffle, a left baffle, a rear baffle and a bottom plate arranged on the upper end surface of the workbench; guide rails are arranged on the front baffle and the rear baffle, and the load-bearing steel plate is set on the rail.

Still further, a threaded hole is opened on the left baffle, and the screw push rod is arranged in the threaded hole to realize relative movement between the screw push rod and the left baffle.

Still further, a handle is provided on the screw push rod.

Still further, a fixed support is provided between the bottom plate and the workbench.

Still further, the lower end surface of the base is provided with universal casters.

Still further, a hand push rod is provided on the base.

Still further, the bottom slide rail and the top slide rail are respectively located on the left side of the base and the workbench, and the load-bearing steel plate moves out of the work frame from the right side.

Compared with the prior art, the beneficial technical effects of the utility model are as follows:

The utility model provides power through the hydraulic plunger to raise or lower the workbench, which can be operated by a single person; the application of the scissor-type inner gallows and the scissor-type outer gallows reduces the weight and volume of the device, and can adapt to narrow space operations; The screw push rod moves the load-bearing steel plate, and the adjustment is finer. Move the frequency converter to the load-bearing steel plate, move up and down or left and right, complete the replacement or maintenance work, improve the maintenance efficiency of the fan, and have significant economic benefits.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings.

Fig. 1 is the front view of the special device for replacing the hydraulic fan frequency converter of the utility model;

Fig. 2 is a schematic diagram of the working frame structure;

Explanation of reference signs: 1, universal caster; 2, base; 3, bottom slider; 4, bottom slide rail; 5, scissor-type inner gallows; 6, top slide rail; 7, top slide block; 8, work platform; 9. handle; 10. screw push rod; 11. guide rail; 12. load-bearing steel plate; 13. fixed support; 14. scissor type outer gallows; 15. hydraulic plunger; 16. hand push rod; 18, working frame; 1801, front baffle; 1802, left baffle; 1803, rear baffle; 1804, base plate; 19, threaded hole.

detailed description

As shown in FIG. 1 , one specific embodiment of a special device for replacing a hydraulic fan frequency converter includes a base 2 , a scissor-type inner gallows 5 , a scissor-type outer gallows 14 and a workbench 8 . A bottom slide rail 4 is provided on the base 2, and the bottom slide rail 4 is provided on the left half of the base. A bottom slider 3 is installed on the bottom slide rail, so that the bottom slider 3 can slide left and right in the bottom slide rail 4 . A top slide rail 6 is provided on the workbench 8, and the top slide rail 6 is provided on the left half of the workbench. A top slide block 7 is installed on the top slide rail 6, so that the top slide block 7 can slide left and right in the top slide rail 6. The lower end of the scissor-type inner gallows 5 is hinged with the bottom slider 3, the upper end is hinged with the top slider 7, and the upper and lower ends of the scissor-type outer gallows 14 are respectively hinged with the workbench 8 and the base 2. Describe the frame body hinge of scissors type inner gallows 5 and scissors type outer gallows 14, realize vertical expansion and contraction (with reference to Fig. 1). A hydraulic plunger 15 is installed between the scissor type inner gallows 5 and the scissor type outer gallows 14, and the two ends of the hydraulic plunger 15 are respectively hinged with the scissor type inner gallows 5 and the scissor type outer gallows 14, so that the hydraulic pressure The plunger 15 does not affect the rotation of the scissor type inner gallows 5 and the scissor type outer gallows 14 when shrinking or extending. A hydraulic control device 17 for controlling the hydraulic plunger 15 is installed on the base 2. During operation, the hydraulic control device 17 is used to control the contraction or extension of the hydraulic plunger 15, so as to realize the rise or fall of the workbench. A work frame 18 is arranged above the workbench 8, and a load-bearing steel plate 12 is slidably arranged in the work frame 18. The load-bearing steel plate 12 is a thin load-bearing steel plate, and one side of the work frame 18 is provided with a screw push rod 10; The screw push rod 10 is movably connected with the load-bearing steel plate 12, and the load-bearing steel plate 12 can be moved out or retracted in the work frame 18 by rotating the screw push rod 10. Specifically, the load-bearing steel plate 12 moves out of the work frame from the right side 18. Since the bottom slide rail 4 and the top slide rail 6 are both on the left side of the workbench, it is more beneficial to keep the balance if the load-bearing steel plate 12 is moved out from the right side.

As shown in Figure 2, in addition to the above technical features, more specifically, the working frame 18 includes a front baffle 1801, a left baffle 1802, a rear baffle 1803 and a bottom plate 1804 arranged on the upper end surface of the workbench 8 , the front baffle 1801, the left baffle 1802, the rear baffle 1803 and the bottom plate 1804 form a box body with openings on the right side and the upper side. Guide rails (11) are installed on the front baffle plate 1801 and the rear baffle plate 1803, the load-bearing steel plates (12) are arranged on the guide rails (11), and threaded holes 19 are provided on the left baffle plate 1802, so that The screw push rod 10 is installed in the threaded hole 19, the upper outer end of the screw push rod 10 is equipped with a handle 9, and the inner end is rotatably connected with the load-bearing steel plate 12. By shaking the handle, the screw push rod 10 and the left stop The relative movement of the plate 1802 pushes the load-bearing steel plate 12 out of the working frame to the right.

When implementing this specific embodiment, more specifically, a fixed support 13 is installed between the bottom plate 1804 and the workbench 8 to space a certain gap between the work frame and the workbench. The lower end surface of the base 2 is provided with a universal caster 1 to facilitate the movement of the utility model. The base 2 is provided with a hand-held push rod 16, so that people can use the hand-held push rod 16 to push the utility model to move when in use, which is more labor-saving.

Working process: use the crane in the nacelle to hoist the utility model in the folded state from the bottom of the tower to the fan nacelle. The utility model is moved to the front of the cabinet equipped with the fan frequency converter by operating the hand-push handle bar. Operate the hydraulic control device to make the bottom slider and the top slider at both ends of the scissor-type inner gallows move horizontally along the bottom slide rail and the top slide rail respectively, thereby driving the inner and outer gallows to move vertically upward. When the gap at the bottom of the inverter is at the same height, operate the hydraulic control device to make it stop working, that is, complete the lifting process of the device. Shake the handle to make the screw push rod rotate, and the screw push rod drives the load-bearing steel plate along the guide rail to enter the lower gap of the frequency converter. The staff removes the inverter and puts it on the load-bearing steel plate, shakes the handle to pull it out and lowers the workbench to the lowest height, and puts the inverter in the engine room. Put another frequency converter on the workbench, then raise the workbench and send the frequency converter to the corresponding position for installation, which will not be described in detail here, and complete the replacement of the frequency converter in the fan engine room.

The above-mentioned embodiment is only to describe the preferred mode of the present utility model, not to limit the scope of the present utility model. The various deformations and improvements mentioned above should all fall within the scope of protection determined by the claims of the utility model.

Claims (8)

1. a kind of fluid pressure type fan frequency converter changes special purpose device, it is characterised in that：Including turntable in base (2), scissor-type (5), the outer turntable (14) of scissor-type and workbench (8)；Bottom slide rail (4), the workbench (8) are offered on the base (2) On offer top slide rail (6)；The lower end of turntable (5) passes through base slider (3) and the bottom slide rail (4) in the scissor-type Connection, upper end is connected by top slide (7) with the top slide rail (6)；In the scissor-type lower end of turntable (5) with it is described Base slider (3) is hinged, and upper end is hinged with the top slide (7)；The upper and lower ends difference of the outer turntable (14) of the scissor-type It is hinged with the workbench (8) and base (2)；The support body of turntable (5) and the outer turntable (14) of scissor-type is hinged in the scissor-type, Realize the flexible of vertical direction；In the scissor-type hydraulic plunger is provided between turntable (5) and the outer turntable (14) of scissor-type (15) hydraulic control device (17) for controlling the hydraulic plunger (15), is provided with the base (2)；The workbench (8) top is provided with to be slided in process box (18), the process box (18) and is provided with load-bearing steel plate (12), the process box (18) Side be provided with spiral handspike (10)；The spiral handspike (10) is flexibly connected with the load-bearing steel plate (12), by rotation Spiral handspike (10) can realize removal or withdrawal of the load-bearing steel plate (12) in process box (18).

2. fluid pressure type fan frequency converter according to claim 1 changes special purpose device, it is characterised in that：The process box (18) including being arranged on the front apron (1801), right baffle-plate (1802), backboard (1803) and bottom of the workbench (8) upper surface Plate (1804)；Guide rail (11) is provided with the front apron (1801) and backboard (1803), the load-bearing steel plate (12) is set On the guide rail (11).

3. fluid pressure type fan frequency converter according to claim 2 changes special purpose device, it is characterised in that：The right baffle-plate (1802) screwed hole (19) is offered on, the spiral handspike (10) is arranged in the screwed hole (19), realizes spiral handspike (10) with the relative motion of right baffle-plate (1802).

4. fluid pressure type fan frequency converter according to claim 3 changes special purpose device, it is characterised in that：The spiral handspike (10) handle (9) is provided with.

5. fluid pressure type fan frequency converter according to claim 2 changes special purpose device, it is characterised in that：The base plate (1804) hold-down support (13) is provided between the workbench (8).

6. fluid pressure type fan frequency converter according to claim 1 changes special purpose device, it is characterised in that：The base (2) Lower surface is provided with universal caster wheel (1).

7. fluid pressure type fan frequency converter according to claim 1 changes special purpose device, it is characterised in that：The base (2) On be provided with hand steered push rod (16).

8. fluid pressure type fan frequency converter according to claim 1 changes special purpose device, it is characterised in that：The bottom slide rail (4) and top slide rail (6) is located at the left side of the base (2) and workbench (8) respectively, the load-bearing steel plate (12) is from right side shifting Go out the process box (18).