WO2009079926A1

WO2009079926A1 - Vertical wind power generator

Info

Publication number: WO2009079926A1
Application number: PCT/CN2008/001985
Authority: WO
Inventors: Yunhe Deng
Original assignee: Yunhe Deng
Priority date: 2007-12-10
Filing date: 2008-12-09
Publication date: 2009-07-02

Abstract

A vertical wind power generator includes a tower structure (1), wind wheels (20) and generators (2); at least two bases (7,7') are arranged in the tower structure (1), one wind wheel (20) is arranged between each adjacent two bases (7,7'), an anemometer is installed on the top of the wind wheels (20), the wind wheel (20) includes a rotating shaft (15) and three or more blades (5) which are installed on the rotating shaft (15), the generator (2) is assembled under each wind wheel (20); one generator (2), one wind wheel (20) and two bases (7,7') compose a generator unit; the blade (5) includes frames (23), dead pulleys (24), guy cables (28), afront roller (27), a rear roller (29), a front roller electromotor (30), a rear roller electromotor (31) and a wind sail (36); the tower structure (1) is mounted on a building, each group of supporting rods (3) on the tower structure (1) downwardly extends into pillars (34) of the building. This kind of wind power generator, whose tower structure is steady and hard to fall down, has high generating efficiency, long service life and convenience of maintenance during the use.

Description

Vertical wind turbine technology

The invention relates to a wind power generator, in particular a vertical type wind power generator. Background technique

With the development of society, energy is becoming more and more important in people's lives, and it is becoming more and more scarce. It has attracted the attention and attention of all walks of life, and has developed various new energy sources, especially nowadays, generally promoting green energy. The applications include hydroelectric power, tidal power, wind power, solar energy, etc. Wind energy is the most extensive and easily available compared to other green energy sources. In the field of wind power generation, a vertical type wind turbine has been introduced. This type of vertical type wind turbine has a commonality, that is, a vertical multi-layer impeller, and the impeller can even be superimposed to a height of several tens of meters. Thus, for the entire wind turbine, the wind receiving area of the blade can be greatly increased. For example, an integrated vertical axis windmill of the Chinese Patent Publication No. CN1488852A includes a wind direction indicator and at least one frame pillar which can be inserted up and down and is reinforced by a steel cable, and a frame frame is arranged in the frame pillar, and the transmission shaft is vertical The frame pillar and the blade frame center are fixedly connected with the blade frame and cooperate with the frame pillar; the wind direction indicator is sequentially connected with the wind direction indicator sensor to connect the hydraulic propeller in the fan blade frame, and the transmission device connects at least one pair of wings of the fan blade frame. The vertical axis has a small fan central axis, and the upper and lower central axes of the small blades are movably matched with the blade frame through the shaft support. The blades of the above-mentioned integrated vertical axis windmill are vertically stacked, and all the blades are connected with a central axis located in the middle, and the blades can drive the central axis to rotate. The central shaft is connected to the rotating shaft of the generator, the blade is driven by the wind, the blade drives the central shaft, and the central shaft drives the generator shaft to generate electricity for the generator. The multi-layer fan blades rotate at the same time. Compared with the single impeller fan, the rotational torque of the multi-blade is large. However, the speed of the central axis rotation is not the superposition of the rotational speed of all the blades. Therefore, the power generation efficiency is not very high. high. Another point to note is that The blade of the vertical axis windmill is generally a hard, lightweight, high-strength material, and the blade of the material is expensive. Another example is a Korean patent of International Patent No. 01/44656 A1. Similar to the above-mentioned Chinese patent, the same vertical multi-layer fan blades drive the same generator, and the power generation efficiency is not high. In addition, in the above two patents, since the base of the windmill is unstable, it is necessary to connect the support rod to the bottom surface with a steel cable. The higher the fan blade is superimposed, the larger the footprint of the cable, so the vertical windmill of this structure is not suitable for too high.

Summary of the invention

The technical problem to be solved by the present invention is to provide a vertical wind power generator with high stability, high power generation efficiency and long service life; and the high degree of automation of the wind wheel, the price is cheap, the installation is stable, and the damage is not easy to occur. The phenomenon.

In order to solve the above technical problem, the technical solution of the present invention is:

A vertical wind power generator includes a tower, a wind wheel, and a generator device; the tower is composed of three or more sets of support rods, and each set of support rods is vertically upward and on the same circumference. The center of the circumference is the center of the tower; the tower is provided with at least two layers of bases, and each of the two adjacent bases is provided with a wind wheel, and the top of the wind wheel is installed There is a wind gauge, the wind wheel comprises a rotating shaft and three or more blades mounted on the rotating shaft, and the base is provided with a central controller capable of controlling the blades according to the direction of the wind gauge; The axis of rotation is perpendicular to the ground plane and is the center of the circumference;

A generator device is arranged below each of the wind wheels, and a generator device, a wind wheel and two bases form a generator set;

The blade includes a frame, a fixed pulley, a cable, a front roller, a rear roller, a front roller motor, a rear roller motor, and a sail, and the front roller motor and the rear roller motor are connected to a central controller, and the fixed pulley is mounted on a frame upper frame On the inner side, a front roller and a rear roller are arranged at the lower frame, the front roller motor is mounted at one end of the front roller, and the rear roller motor is mounted at one end of the rear roller; the side of the sail is provided with criss-crossing cables, criss-crossing The cable is connected to the sail, and a ring is installed at both ends of the transverse cable; the cable passing through the fixed pulley is connected to the upper end of the sail, and the cable is wound around On the rear roller; the lower end of the sail is wound on the front roller, and the sliding bar is installed on the inner side of the left frame and the right frame, and the ring at both ends of the transverse cable is pivotally connected to the sliding bar;

The tower is located on a building, and each set of support rods on the tower extends downward into a column within the building.

This kind of structural design, each layer of the wind wheel is equipped with a generator device, that is, each layer of the wind wheel is an independent generator set, which has high power generation efficiency; the wind wheel and the generator device are placed up and down, and both have large The working space, the generator and the wind wheel can be stably installed in the working space of the tower; the degree of automation of the wind wheel is high, and the wind receiving area of the blade can be adjusted according to different wind speeds; the wind wheel can be stably installed on the upper and lower floors On the base, there is no easy damage and the service life is improved. The tower support rod group extends down into the column inside the building and is integrated with the column. The tower is firmly fixed to the building. It is not easy to cause dumping, which may cause damage to personnel and equipment; it has a long service life and can be easily repaired and maintained during use.

As an improvement, each set of support rods is formed by stacking a plurality of support rods having different lengths; each of the support rods is fixedly provided with a connecting flange; and each of the support rods is disposed at the same height There is a gravity support frame in the shape of a cow leg, and a gravity support frame at the same height is a group, and each support bar is provided with at least three sets of gravity support frames to form at least two layers. The support rod group constituting the tower is formed by a plurality of support rods connected by flanges, the length of the support rod group can be freely changed, and the tower frame can be erected to different heights according to needs, which is relatively flexible, and Easy to implement. At each of the support rods, there is a bull-legged gravity support frame at the same height, and the gravity support frame supports the base for installing the wind wheel and the lower positioning block for installing the generator, and each base and the lower positioning block correspond to each other. A set of gravity support frames, the base and the lower positioning block can be conveniently installed on the gravity support frame, so that the entire generator set is more convenient to install.

As a further improvement, the base is a circular rigid base, and the base includes a peripheral support ring and a central portion at the center, and a connecting portion for connecting the support ring and the intermediate portion, The center of the middle portion is provided with a shaft hole, and the center of the shaft hole is the center of the tower; the base is mounted on one of the gravity support frames.

As an improvement, the rotating shaft is composed of a hollow shaft and two solid shafts, and the two solid shafts are respectively disposed at the center positions of the two ends of the hollow shaft, and the two solid shafts are respectively arranged on the upper and lower floors. The shaft hole is pivotally connected.

As an improvement, the generator device includes a generator, three or more positioning rods, and upper and lower positioning blocks connected at both ends of the positioning rod. The positioning rod is on the same circumference, the generator is mounted on the positioning rod, the positioning rod is provided with reinforcing ribs, the reinforcing ribs are annular, and the positioning rods distributed on the same circumference are sequentially connected. The generator rotor shaft is located at a center position of the tower and the base, and the rotor shaft is perpendicular to the ground plane and extends upwardly through the upper positioning block and is coupled to a solid shaft of the rotating shaft, and the lower positioning block is mounted on a set of gravity supports On the shelf. The generator device is located below the wind wheel and is matched with a vertical type of wind wheel structure. The rotating shaft of the generator is perpendicularly connected with the rotating shaft of the wind wheel. The torque of the rotating shaft of the wind wheel is the torque of the generator shaft, and the energy loss is Small; The generator can be firmly fixed to the tower under the action of the positioning rod and the upper and lower positioning blocks, ensuring that the generator will not be offset from the center position, and that the generator shaft and the rotating shaft of the wind wheel are on the same vertical line.

As a further improvement, the sail is a waterproof double fabric, and each steel cord which is criss-crossed between the double fabrics is stitched between the double fabrics. The blades on the wind wheel are flexible waterproof fabrics, which can be easily folded, and the cost of the blades is low when the requirements are met.

As an improvement, the base is provided with a circular blade motion guide that constrains the movement of the blade frame. The radius of the blade motion guide rail is less than or equal to the width of the blade frame, and the frame is provided with a pulley, and the pulley cooperates with the blade motion guide rail. The blade frame moves in a circular motion with the wind. Due to the large frame, the frame will inevitably be deformed during the movement, and may even cause the frame to become stuck due to excessive deformation. To ensure that the frame can smoothly rotate around the axis of rotation, in the frame Set the guide rail underneath, the movement of the frame can only be along the guide rail The trajectory, thereby reducing the degree of deformation of the frame during movement.

Compared with the prior art, the vertical wind power generator of the present invention, since its tower structure is composed of three or more sets of support rods, each set of support rods is vertically upward and on the same circumference. This kind of structural design, each layer of the wind wheel is equipped with a generator device, that is, each layer of the wind wheel is an independent generator set, which has high power generation efficiency; the wind wheel and the generator device are placed up and down, and both have large The working space, the generator device and the wind wheel can be stably installed in the working space of the tower; the degree of automation of the wind wheel is high, and the wind receiving area of the blade can be adjusted according to different wind speeds; the wind wheel can be stably installed on the upper and lower sides On the floor base, there is no easy damage and the service life is improved. The tower support rod group extends down into the column inside the building and is integrated with the column. The tower is firmly fixed to the building. It is not easy to cause dumping, which may cause damage to personnel and equipment; it has a long service life and can be easily repaired and maintained during use. DRAWINGS

1 is a schematic view of a vertical wind turbine of the present invention having a two-layer generator set; FIG. 2 is a schematic view of a single-layer generator set in a vertical wind power generator of the present invention;

Figure 3 is a schematic view showing the structure of a vertical wind turbine tower of the present invention;

Figure 4 is a schematic view of the structure of the support rod shown in Figure 3; '

Figure 5 is a schematic view of the structure of the base shown in Figure 3;

6 is a schematic view showing the structure of a single-layer wind wheel in a vertical wind power generator of the present invention;

Figure 7 is a schematic view showing the structure of the rotating shaft shown in Figure 6;

Figure 8 is a schematic structural view of a generator device in a vertical wind power generator of the present invention;

Figure 9 is a schematic view showing the structure of a wind turbine blade in a vertical wind power generator of the present invention;

Figure 10 is a partial enlarged view of the structure of the slider of Figure 8;

Figure 11 is an enlarged view of the periphery of the fixed pulley structure of Figure 8; Figure 12 is a schematic view showing the structure of a tower erected on a building in the vertical wind power generator of the present invention;

Figure 13 is a schematic view showing the cooperation of the blade frame and the guide rail in the vertical wind power generator of the present invention; Figure 14 is a partially enlarged view of the blade frame of Figure 13 in cooperation with the blade motion guide. detailed description

The invention is further described below in conjunction with the drawings and specific embodiments.

Referring to FIG. 1 , a vertical wind power generator of the present invention, the basic structure of the vertical wind power generator is a tower 1 , and the tower 1 can be provided with a multi-layer generator set. The present invention only gives a two-layer generator set. . As shown in FIG. 2, each of the generator sets includes upper and lower two-layer bases 7, 7' disposed at different heights on the tower 1, and a wind wheel 20 is disposed between the two-layer bases 7, 7'. A generator device 2 is arranged below the wind wheel 20. As shown in FIG. 12, the tower 1 is erected on a building, and the support rod group 3 at the bottom of the tower 1 extends downward into the interior pillar 34 of the building, and the support is integrated with the pillar 34, and the pillar is integrated. 34 is the support rod of the tower 1.

Referring to FIGS. 2 and 3, the tower 1 is composed of three or more sets of support rods 3, and in the present embodiment, the tower 1 is composed of five sets of support rods 3. Each set of support rods 3 is vertically upward and on the same circumference, and the center of the circumference is the center of the tower 1, wherein each set of support rods 3 is connected by a plurality of support rods 4 through the connection structure, In this embodiment, the connecting structure is a connecting flange 9 disposed at each end of each of the support rods 4. As shown in FIG. 4, each of the support rods 4 is provided with a gravity support frame 8 capable of supporting the base at the same height on one side of the inner circle, and the gravity support frame 8 has a bull-leg shape. In this embodiment, each set of support rod groups 3 is provided with at least three layers of three sets of gravity support frames 8 for supporting the upper and lower bases 7, 7' and the generator device 2. The lengths of the interconnecting support rods 4 are unequal, and the support rods 4 are connected by a connecting flange 9 , and the two connecting flanges 9 are connected by a fixing member. Screws, pins, etc. (not shown), of course, can also be other fixtures. Referring to FIGS. 2 and 3, a circular rigid base slightly smaller than the inner circle is disposed on each of the three planes formed by the three-layer three-group gravity support frame 8. As shown in FIG. 5, wherein the center of the base is left with a shaft hole 16, the center of the shaft hole is the center of the structure of the tower 1, and the base includes a peripheral support ring 19 and a central portion 17 at the center, and A connecting portion 18 for connecting the support ring and the intermediate portion, the shaft hole 16 being located on the intermediate portion 17. A accommodating space may be formed between the adjacent bases, and the two accommodating spaces 6, 6' are respectively provided with a generator wind wheel 20 and a generator device 2, which constitute a wind wheel in the generator set. 20 and generator device 2.

Referring to FIGS. 6 and 7, the generator wind wheel 20 provided in the accommodating space 6 includes a rotating shaft 15 and three or more blades 5 mounted on the rotating shaft 15, and the wind of the embodiment The wheel 20 is a three-blade 5 structure, and a wind gauge (not shown) is further provided on the top of the wind wheel 20. As shown in FIG. 7, the rotating shaft 15 is composed of a hollow shaft 22 and two solid shafts 14. The two solid shafts 14 are respectively disposed at the center positions of the two ends of the hollow shaft 22, and the two solid shafts are respectively disposed. 14 is respectively pivotally connected to the shaft hole 16 on the upper and lower bases, and the upper and lower bases fix the wind wheel 20 in the receiving space 6. As shown in FIGS. 9 to 11, the blade 5 includes a frame 23, a fixed pulley 24, a cable 28, a front roller 27, a rear roller 29, a front roller motor 30, a rear roller motor 31, and a sail 36. The sail 36 of the present embodiment is a waterproof double fabric, and each of the steel cables 25, 26 which are criss-crossed between the double fabrics is sewn between the double fabrics. The front drum motor 30 and the rear drum motor 31 are connected to a central control (not shown), and the central controller can adjust the rotational speed and steering of the front drum motor 30 and the rear drum motor 31 based on the information fed back by the wind gauge. The fixed pulley 24 is mounted on the inner side of the upper frame of the frame 23, and a front roller 27 and a rear roller 29 are provided at the lower frame. The front roller motor 30 is mounted at one end of the front roller 27, and the rear roller motor 31 is mounted at one end of the rear roller 29. On one side of the sail 36, there are criss-crossed cables 25, 26, and the criss-crossing cables 25, 26 are connected to the sail 36, and a ring 32 is mounted at both ends of the transverse cable, passing through the fixed pulley 24. The cable 28 is connected to the upper end of the sail 36, the cable 28 is wound around the rear drum 29, the lower end of the sail 36 is wound around the front drum 27, and the slide bar 33 is mounted on the inner side of the left and right frames, and the transverse cable 25 is attached. The ring 33 at both ends is pivotally connected to the slide bar 33. Referring to FIGS. 2 and 8, the generator device 2 is located in another accommodating space 6 below the lower base, and includes three or more positioning rods 10 and upper ends connected to the positioning rods 10, Lower positioning blocks 12, 13. The positioning rod 10 is provided with reinforcing ribs 11 , and the reinforcing ribs 11 are annular and sequentially connected to the positioning rod 10 distributed on the same circumference, the positioning rod 10 and the upper and lower positioning blocks 12 , 13 and the reinforcing ribs 11 is a fixed weld that allows the generator peripheral to form a solid shelf. A generator 38 is disposed between the upper and lower positioning blocks 12, 13, and the lower positioning block 13 is mounted on one of the gravity support frames. In this embodiment, the positioning rods 10 are six, the rotating shaft 15 is perpendicular to the ground plane and penetrates the upper positioning block 12, and the generator rotor shaft 21 and the rotating shaft 15 are on the same vertical line, and the vertical axis thereof is vertical. At the center of the tower 1 and located at the generator device 2 and the positioning block, the rotor shaft 21 extends from the upper positioning block 12 and is coupled to the rotating shaft 15. In this embodiment, the generator rotor shaft 21 is coupled to the rotating shaft 15 through a coupling (not shown), and when the wind force rotates the wind wheel 20, the generator is driven by the rotation of the rotating shaft 15. The rotation of the rotor shaft 21 generates electric power.

Referring to FIG. 13 and FIG. 14 , a circular guide rail 35 is disposed on the upper and lower bases, wherein the circular guide rail 35 in the embodiment is a groove, and the circular guide rail is 35 is the running track of the blade 5. The blade 5 includes a blade frame 23, and a pulley 36 is provided at an upper and lower position of the frame 23 corresponding to the guide rail 35. The pulley 36 cooperates with the blade movement guide 35, and the pulley 36 can move along the guide rail 35. . The blade 5 is circularly moved around the rotating shaft 15 along the circular guide rail 35. The blade running rail 35 constrains the consistency of the movement of the upper and lower frames of the frame 23, ensuring that the upper and lower frames of the blade 5 are always in the same vertical plane. This ensures that the blade 5 can smoothly move around the axis of rotation 15 in a circular motion.

Referring to FIGS. 1 to 14, the following describes the operation mode of the vertical wind power generator of the present invention. A multi-layer generator set can be disposed on the tower 1, and each layer of the generator set can be regarded as a power source. The structure of the present invention A multi-source vertical wind turbine composed of a plurality of generator sets vertically stacked, which has high power generation efficiency. Tower 1 structure can be taken at any height, tower The bottom support rod group 3 extends downward into the column 34 inside the building and is integrated with the column 34 of the building, so that the tower 1 is not easily dumped, so the tower 1 can be erected to several tens of meters. The high, even hundreds of meters, generators at different heights make full use of space wind energy. When the wind is small, the wind gauge 20 detects the wind speed in both directions, and then transmits the signal to the central controller through the sensor. The central controller analyzes the signal and gives the front drum motor 30 on the blade. And the rear drum motor 31 issues an operation command. Since the current wind speed is too small, the generator is in an operating state lower than the rated power, the central controller controls the drum motor 31 to operate counterclockwise, and the rear drum 29 winds the cable 28 to increase the sail. The wind receiving area of 36, thereby increasing the power generation of the generator. When the wind is large, the wind gauge 20 detects the wind speed in both directions, and then transmits the signal to the central controller through the sensor. The central controller analyzes the signal and gives the front drum motor to the impeller. 30 and the rear drum motor 31 issue an operation command. Since the current wind speed is too large, the generator is in an operating state higher than the rated power. In order to prevent the generator from being damaged due to excessive operation, the front drum motor 30 is controlled by the central controller to operate clockwise. The front drum 27 wraps around the cable 28 to reduce the wind receiving area of the sail 36, causing the generator speed to slow down and finally the generator will operate at the rated speed. It should be noted that in the same area, different heights, wind direction and wind power will be different. Each of the wind wheels 20 on the vertical wind turbine of the present invention operates independently and does not affect each other. Each of the wind wheels 20 drives the respective generators, and the blades 5 are adjusted at the respective heights of the wind, so that the respective generators are in the highest power generation state, so that the entire vertical wind wind motor reaches the maximum wind energy utilization rate.

Compared with the prior art, the vertical wind power generator of the present invention is composed of three or more sets of support rods, and each set of support rods is vertically upward and on the same circumference. Structural design, each layer of wind wheel is equipped with a generator set, that is, each layer of wind wheel is an independent generator set, which has high power generation efficiency. The wind wheel and the generator device are placed up and down, and both have a large working space. The generator and the wind wheel can be stably installed in the working space of the tower, and the wind wheel is highly automated, and can be adjusted according to different wind speeds. The wind receiving area of the blade. The wind wheel can be stably installed between the upper and lower bases, and the damage will not occur easily, which improves the service life. The tower support rod group extends downward into the column in the building, and is integrated with the column. The tower is firmly fixed to the building, which is not easy to dump, causing danger to personnel and equipment damage, and its service life. Long, and also easy to repair and maintain during use.

Claims

Claim

A vertical wind power generator comprising a tower, a wind wheel, and a generator device; the tower is composed of three or more sets of support rods, each set of support rods being vertically upward and on the same circumference The center of the circumference is the center of the tower; the tower is provided with at least two layers of bases, and each of the two adjacent bases is provided with a wind wheel, the wind wheel The top is equipped with a wind gauge, the wind wheel comprises a rotating shaft and three or more blades mounted on the rotating shaft, and the base is provided with central control for controlling the blade according to the direction of the wind gauge The rotating shaft is perpendicular to the ground plane and is the center of the circumference;

It is characterized by:

The blade includes a frame, a fixed pulley, a cable, a front roller, a rear roller, a front roller motor, a rear roller motor, and a sail, and the front roller motor and the rear roller motor are connected to a central controller, and the fixed pulley is mounted on a frame upper frame On the inner side, there are a front roller and a rear roller at the lower frame, the front roller motor is mounted at one end of the front roller, the rear roller motor is mounted at one end of the rear roller, and the cable is criss-crossed on one side of the sail, criss-crossing The cable is connected to the sail, and a ring is installed at both ends of the transverse cable; the cable passing through the fixed pulley is connected to the upper end of the sail, the cable is wound around the rear drum; the lower end of the sail is wound around the front drum, A slide bar is mounted on the inner side of the left frame and the right frame, and the ring at both ends of the transverse cable is pivotally connected to the slide bar;

2. The vertical wind power generator according to claim 1, wherein: each of the sets of support rods is formed by stacking a plurality of support rods of different lengths, and each of the support rods is fixed at both ends. a connecting flange; each of the support rods is provided with a bull-legged gravity support frame at the same height, and a gravity support frame at the same height is a group, and each set of support rod groups is provided with at least three groups The gravity support frame is formed in at least two layers.

3. The vertical wind power generator according to claim 2, wherein: the base is a circular rigid base, the base includes a peripheral support ring and an intermediate portion at the center, and a connecting portion for connecting the support ring and the intermediate portion, and the center of the middle portion is provided with a shaft hole, and the center of the shaft hole is The center of the tower; the base is mounted on the set of gravity support frames.

4. The vertical wind power generator according to claim 3, wherein: the rotating shaft is composed of a hollow shaft and two solid shafts, and the two solid shafts are respectively disposed at the center of both ends of the hollow shaft Positions, the two solid shaft pivots are respectively pivotally connected to the shaft holes on the adjacent upper and lower two-layer bases.

5. The vertical wind power generator according to claim 1, wherein: said generator device comprises a generator, three or more positioning rods, and upper and lower positioning blocks connected to both ends of the positioning rod, said positioning The rod is on the same circumference, the generator is mounted on the positioning rod, the positioning rod is provided with reinforcing ribs, the reinforcing rib is annular, and the positioning rods distributed on the same circumference are sequentially connected, and the power generation The rotor shaft of the machine is located at a central position of the tower and the base. The rotor shaft is perpendicular to the ground plane and extends upwardly through the upper positioning block and is connected to a solid shaft of the rotating shaft. The lower positioning block is mounted on a set of gravity support frames.

6. The vertical wind power generator according to claim 5, wherein: the sail is a waterproof double fabric, and each of the steel cables that are criss-crossed between the double fabrics is stitched between the double fabrics.

7. The vertical wind power generator according to claim 6, wherein: the support rod group is integrated with the column in the building to form a tower base of the tower.

The vertical wind power generator according to claim 7, wherein: the base is provided with a circular blade motion guide rail, and a radius of the blade motion guide rail is less than or equal to a width of the blade frame. A pulley is provided under the frame, and the pulley cooperates with the blade movement guide.