CN112664381B - Combined type ocean power generation equipment - Google Patents

Abstract

The invention relates to a combined ocean energy power generation equipment and its use method, comprising a bottom plate, a fixing device and a power generation device. The bottom plate has a rectangular structure, the lower end of the bottom plate is symmetrically installed with a fixing device, and the upper end of the lower end of the bottom plate is uniformly equipped with a power generation device. The present invention can solve the problems of poor use effect, complicated installation and low stability when the existing equipment generates electricity from ocean energy. When ocean energy is used for power generation, only one type of ocean energy can be used for power generation, resulting in low utilization rate of ocean energy, poor power generation effect, and affecting the use effect of equipment.

Description

A combined ocean energy power generation device

technical field

The invention relates to the technical field of ocean energy power generation, in particular to a combined ocean energy power generation device and a method for using the same.

Background technique

Ocean energy refers to the renewable energy attached to seawater. The ocean receives, stores and emits energy through various physical processes. These energies exist in the ocean in the form of tidal energy, wave energy, temperature difference energy, salinity difference energy, ocean current energy, etc. . The utilization of ocean energy refers to the use of certain methods and equipment to convert various ocean energies into electrical energy or other forms of energy that can be used. Because ocean energy has the advantages of renewability and no pollution to the environment, it is a new energy source with strategic significance that needs to be developed urgently.

At present, when the existing ocean energy power generation equipment is used, there are usually the following defects: 1. When the existing equipment is used to generate ocean energy, the use effect is poor, the installation is complicated, the stability is low, and the equipment is easily disturbed by the external environment. Shaking or even damage will affect the service life of the equipment; 2. When the existing equipment generates electricity from ocean energy, it can only generate electricity for one type of ocean energy, resulting in low utilization rate of ocean energy and poor power generation effect, which affects the efficiency of the equipment. Effect.

Contents of the invention

(1) Technical problems to be solved

The present invention can solve the problems of poor use effect, complicated installation and low stability when the existing equipment generates electricity from ocean energy. When ocean energy is used for power generation, only one type of ocean energy can be used for power generation, resulting in low utilization rate of ocean energy, poor power generation effect, and affecting the use effect of equipment.

(2) Technical solution

In order to achieve the above object, the present invention adopts the following technical solution, a combined ocean energy power generation equipment, including a base plate, a fixing device and a power generation device, the base plate is in a rectangular structure, the lower end of the base plate is symmetrically installed with a fixing device, and the upper end of the lower end of the base plate is uniform A generator is installed.

The fixing device includes a fixing seat, a fixing column and a fixing mechanism, the lower end of the bottom plate is evenly equipped with a fixing seat, the lower end of the fixing seat is fixedly installed with a fixing column, the fixing column is in a tapered structure, and a cavity is arranged inside the fixing column, A fixing mechanism is installed inside the cavity. During specific work, the fixing column can be inserted into the interior of the seabed ground. The fixing mechanism can effectively ensure the firmness of the connection between the fixing column and the seabed ground and prevent shaking.

The power generation device includes a power generation box, a connecting rod, a support frame, a rotating mechanism and a float mechanism. The power generation box is evenly installed on the top of the bottom plate, and the power generation box is in a rectangular structure. A connecting rod is installed inside the empty slot, and a supporting frame is installed outside the lower end of the connecting rod. The lower end of the supporting frame is installed on the generator box. The characteristics of the ocean current make use of the current energy. When the ocean generates large waves, the float mechanism sinks into the sea surface under the action of the wave. It can be utilized. When the ocean beats the buoy mechanism, the buoy mechanism is deformed under force to realize the function of self-power generation, and then can play a role in simultaneously utilizing multiple ocean energies, improving the utilization rate of ocean energy.

The generator box includes a box body, a sliding rod, a connecting spring, a rotating gear, a rack plate, an adjustment gear and a generator. T-shaped structure, the upper end of the sliding rod is slidingly connected with the sliding groove at the lower end of the connecting rod, and a connecting spring is installed between the upper end of the sliding rod and the sliding groove. The inside of the groove is equipped with a rotating gear through a bearing, and the inner side of the rotating gear is meshed with an adjusting gear. The adjusting gear is installed on the input shaft of the generator, the generator is installed inside the groove, and the outer side of the rotating gear is meshed with a rack plate, and the rack plate is installed on the On the outside of the connecting rod, during specific work, when the ocean generates large waves, the waves beat the float mechanism to drive the connecting rod to move up and down, and the connecting rod drives the generator to generate electricity by rotating the gear, thereby realizing the function of utilizing wave energy.

The rotating mechanism includes a rotating motor, a screw rod, a threaded seat, a limit rod, a limit groove, a turret and a turbine generator. A connecting groove is arranged on the inner side of the middle part of the connecting rod, and the inner upper end of the connecting groove is installed through the motor base. There is a rotating motor, and a screw rod is installed on the output shaft of the rotating motor. The lower end of the screw rod is connected with the connecting rod through a pin shaft. The screw rod is evenly provided with a threaded seat, and a limit rod is symmetrically installed on the outside of the threaded seat. The outside of the middle part of the connecting rod passes through The turret is connected by a sliding fit, and the inner side of the turret is uniformly provided with a limit slot, and the outer side of the turret is installed with a turbine generator. During specific work, according to the characteristics of the ocean current in the installed area, the rotating motor drives the screw to rotate. The steering position of the turbine generator is adjusted through the limit rod, so that the direction of the turbine generator is consistent with the ocean current, and the ocean current can drive the turbine generator to continuously generate electricity.

As a preferred technical solution of the present invention, the float mechanism includes a floating plate, a connecting plate, a return spring, a generating rod and an elastic pad, the floating plate is installed on the upper end of the connecting rod, and the section of the floating plate is U-shaped. The left end of the floating plate is installed with a connecting plate through a pin shaft, and a power pole is installed between the right end of the connecting plate and the middle of the floating plate through a pin shaft. A return spring is symmetrically arranged on the outside of the power pole, and an elastic pad is installed on the right side of the floating plate. The specific work , when the wave beats the connecting plate, the connecting plate rotates inwardly through the pin shaft, and the connecting plate drives the generating rod to shrink, and the generating rod can then generate electricity. The return spring plays the role of reset, and the elastic pad can prevent The rod is damaged by collision.

As a preferred technical solution of the present invention, the power generation pole includes a connecting frame, a partition, a driving gear, a sliding plate and a micro-generator, and the cross-section of the connecting frame is a rectangular hollow structure, and a partition is installed inside the connecting frame , the upper part of the partition is evenly installed with a micro-generator, and the lower end of the partition is evenly installed with a driving gear through a pin shaft. The outer side of the plate is evenly provided with locking teeth, which are meshed with the driving gear. During specific work, when the power generation pole is shrinking, the locking teeth on the outer side of the sliding plate drive the micro generator to generate electricity through the driving gear.

As a preferred technical solution of the present invention, the support frame includes a support rod, a fixed ring and a rotating ring, the lower side of the connecting rod is provided with a fixed ring, and the lower end of the fixed ring is installed on the upper end of the power generation box through the A rotating ring is installed inside the ring, and balls are evenly installed inside the rotating ring. During specific work, the fixed ring can support and limit the connecting rod. The balls in the rotating ring can reduce friction and facilitate the up and down movement of the connecting rod.

As a preferred technical solution of the present invention, the fixed mechanism includes a fixed rod, a rotating seat, a pole and a connecting spring, the fixed rod is installed inside the cavity, and a rotating seat is evenly installed on the outside of the fixed rod, and the rotating seat A support rod is installed inside through a pin shaft, and a connecting spring is installed between the upper end of the support rod and the fixed rod. During specific work, the support rod can increase the contact area with the seabed ground and enhance the firmness between the fixed column and the seabed ground. to avoid shaking.

As a preferred technical solution of the present invention, the limiting groove is arranged obliquely downward along the inner side wall of the turret, the inside of the limiting groove is connected to the outer end of the limiting rod through a sliding fit, and the outer side of the limiting rod is arc-shaped. shaped structure.

In addition, the present invention also provides a method for using combined ocean energy generating equipment, including the following steps:

S1. Manually install the present invention on the bottom of the ocean, and insert the fixing device into the interior of the bottom of the ocean to ensure the firmness of the present invention and avoid shaking;

S2. According to the characteristics of the ocean current in the installed area, the screw is rotated by rotating the motor, and the screw adjusts the steering position of the turbine generator through the limit rod, so that the direction of the turbine generator is consistent with the ocean current, and the ocean current can drive Turbine generator continuous power generation work;

S3. When the ocean generates large waves, the float mechanism sinks into the sea surface under the action of the waves, and the float mechanism drives the power generation box through the connecting rod to generate power, thereby realizing the utilization of ocean wave energy;

S4. When the ocean slaps the buoy mechanism, the buoy mechanism deforms under force to realize the function of self-power generation, which in turn can play a role in efficient utilization of ocean energy.

(3) Beneficial effects

1. The combined ocean energy power generation equipment and its use method provided by the present invention, which adopts a combined power generation method, can simultaneously utilize various ocean energies such as wave energy and ocean current energy, and has good utilization effect and high power generation efficiency. Conducive to long-term power generation and use of equipment;

2. The combined ocean energy power generation equipment and its use method provided by the present invention, its fixing device can be plugged and fixed with the seabed ground, the use effect is good, the installation is simple, the stability is high, the equipment is not easily disturbed by the external environment, and shaking is avoided Even the phenomenon of damage ensures the service life of the equipment.

3. The combined ocean energy generating equipment provided by the present invention and its use method, its buoy mechanism can not only utilize the ocean wave energy, but also can generate electricity by itself according to the kinetic energy generated by the wave energy, which can effectively improve the efficiency of ocean energy. utilization rate.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a schematic plan view of the present invention;

Fig. 3 is a schematic diagram of the structure between the base plate and the fixing device of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram between the bottom plate of the present invention, the power generation box, the connecting rod and the support frame;

Fig. 5 is a schematic cross-sectional structure diagram between the connecting rod and the rotating mechanism of the present invention;

Fig. 6 is a schematic cross-sectional structure diagram between the turret and the limiting groove of the present invention;

Fig. 7 is a schematic diagram of the first cross-sectional structure of the power pole of the present invention;

Fig. 8 is a second cross-sectional structural schematic diagram of the power pole of the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

As shown in Figures 1 to 8, a combined ocean energy power generation equipment includes a base plate 1, a fixing device 2 and a power generation device 3, the base plate 1 is in a rectangular structure, and the lower end of the base plate 1 is symmetrically installed with a fixing device 2, the base plate 1. A power generating device 3 is evenly installed on the upper end of the lower end.

The fixing device 2 includes a fixing seat 21, a fixing column 22 and a fixing mechanism 23, the lower end of the base plate 1 is uniformly equipped with a fixing seat 21, and the lower end of the fixing seat 21 is fixedly installed with a fixing column 22, and the fixing column 22 is in a tapered structure , the interior of the fixed column 22 is provided with a cavity, and a fixed mechanism 23 is installed inside the cavity. During specific work, the fixed column 22 can be inserted into the interior of the seabed ground, and the fixed mechanism 23 can effectively ensure the firmness of the connection between the fixed column 22 and the seabed ground. resistance to prevent shaking.

Described fixed mechanism 23 comprises fixed bar 231, rotating seat 232, pole 233 and connecting spring 234, and described fixed bar 231 is installed in cavity interior, and the outer side of fixed bar 231 is evenly equipped with rotating seat 232, and rotating seat 232 inside A support rod 233 is installed through the pin shaft, and a connection spring 234 is installed between the upper end of the support rod 233 and the fixed rod 231. During specific work, the support rod 233 can increase the contact area with the seabed ground, and strengthen the connection between the fixed column 22 and the seabed. Firmness between the ground to avoid shaking.

The power generation device 3 includes a power generation box 31, a connecting rod 32, a support frame 33, a rotating mechanism 34 and a float mechanism 35. The upper end of the base plate 1 is evenly equipped with a power generation box 31. The power generation box 31 is in a rectangular structure. The power generation box 31 The middle part is provided with a circular hollow slot, and a connecting rod 32 is installed inside the circular hollow slot, and a supporting frame 33 is installed outside the lower end of the connecting rod 32, and the lower end of the supporting frame 33 is installed on the generator box 31, and a rotating mechanism 34 is installed in the middle of the connecting rod 32 , the upper end of the connecting rod 32 is equipped with a float mechanism 35. During specific work, the rotating mechanism 34 can utilize the energy of the ocean current according to the characteristics of the ocean current. When the ocean produces large waves, the float mechanism 35 sinks into the seawater Inside the surface, the float mechanism 35 drives the power generation box 31 to generate power through the connecting rod 32, and then can realize the utilization of ocean wave energy. When the ocean beats the float mechanism 35, the float mechanism 35 is deformed under force to realize self-power generation. Function, and then can play a role in the simultaneous utilization of various ocean energies, improving the utilization rate of ocean energy.

Described generating box 31 comprises box body 311, slide bar 312, connecting spring 313, rotating gear 314, rack plate 315, adjustment gear 316 and generator 317, and described box body 311 is installed on the base plate 1, and box body The middle part of the interior of 311 is provided with a sliding rod 312. The sliding rod 312 has a T-shaped structure. There are grooves symmetrically arranged inside, and the grooves are connected with the circular empty grooves. A rotating gear 314 is installed inside the grooves through a bearing, and an adjusting gear 316 is meshed inside the rotating gear 314, and the adjusting gear 316 is installed on the input shaft of the generator 317 , the generator 317 is installed inside the groove, the outer side of the rotating gear 314 is meshed with a rack plate 315, and the rack plate 315 is installed on the outer side of the connecting rod 32. During specific work, when the ocean produces large waves, the waves beat the float mechanism 35 Drive the connecting rod 32 to move up and down, and the connecting rod 32 drives the generator 317 to generate electricity by rotating the gear 314, thereby realizing the function of utilizing wave energy.

The support frame 33 includes a support rod 331, a fixed ring 332 and a rotating ring 333. The lower side of the connecting rod 32 is provided with a fixed ring 332, and the lower end of the fixed ring 332 is installed on the upper end of the power generation box 31 through the support rod 331. The fixed ring 332 is equipped with a rotating ring 333 inside, and balls are evenly installed inside the rotating ring 333. During specific work, the fixed ring 332 can play a role in supporting and limiting the connecting rod 32. The balls in the rotating ring 333 can reduce friction and facilitate the connection. The rod 32 moves up and down.

The rotating mechanism 34 includes a rotating motor 341, a screw mandrel 342, a threaded seat 343, a limit rod 344, a limit groove 345, a turret 346 and a turbine generator 347, and the inner side of the middle part of the connecting rod 32 is provided with a connecting groove , the inner upper end of the connecting groove is equipped with a rotating motor 341 through a motor seat, and a screw rod 342 is installed on the output shaft of the rotating motor 341, and the lower end of the screw rod 342 is connected with the connecting rod 32 through a pin shaft, and the screw rod 342 is uniformly provided with a threaded seat 343, the limiting rod 344 is installed symmetrically on the outer side of the threaded seat 343, the outer side of the connecting rod 32 is connected with a turret 346 through a sliding fit, the inner side of the turret 346 is uniformly provided with a limiting groove 345, and the outer side of the turret 346 is equipped with a turbine generator 347 , the limiting groove 345 is arranged obliquely downward along the inner side wall of the turret 346, the inside of the limiting groove 345 is connected with the outer end of the limiting rod 344 through a sliding fit, and the outer side of the limiting rod 344 is in an arc-shaped structure, specifically When working, according to the characteristics of the ocean current in the installed area, the rotating motor 341 drives the screw 342 to rotate, and the screw 342 adjusts the steering position of the turbine generator 347 through the limit rod 344, so that the turbine generator 347 is aligned with the direction of the ocean current. Consistently, the ocean current can drive the turbine generator 347 to continuously generate electricity.

The float mechanism 35 includes a floating plate 351, a connecting plate 352, a return spring 353, a generating rod 354 and an elastic pad. The floating plate 351 is installed on the upper end of the connecting rod 32, and the section of the floating plate 351 is a U-shaped structure. A connecting plate 352 is installed on the left end of the 351 through a pin shaft, and a power rod 354 is installed between the right end of the connecting plate 352 and the middle part of the floating plate 351 through a pin shaft. There is an elastic pad. During specific work, when the wave beats the connecting plate 352, the connecting plate 352 rotates inwardly through the pin shaft, and the connecting plate 352 drives the power generating rod 354 to shrink, and the generating rod 354 can then generate electricity, and the return spring 353 plays the effect of resetting, and the elastic pad can prevent the generating pole 354 from colliding and causing damage.

The generating pole 354 includes a connecting frame 3541, a partition 3542, a driving gear 3543, a sliding plate 3544 and a micro-generator 3545. The cross section of the connecting frame 3541 is a rectangular hollow structure, and a partition 3542 is installed inside the connecting frame 3541. The upper end of the partition 3542 is uniformly equipped with a micro-generator 3545, and the lower end of the partition 3542 is uniformly installed with a driving gear 3543 through a pin shaft. The driving gear 3543 is connected with the input shaft of the micro-generator 3545, and the middle part of the lower end of the partition 3542 is fitted by sliding A sliding plate 3544 is connected, and the outer side of the sliding plate 3544 is evenly provided with locking teeth, which are meshed with the driving gear 3543. During specific work, when the power pole 354 shrinks, the locking teeth on the outer side of the sliding plate 3544 are driven by the driving gear 3543. The micro generator 3545 generates electricity.

In addition, the present invention also provides a method for using combined ocean energy generating equipment, including the following steps:

S1. Manually install the present invention on the bottom of the ocean, and insert the fixing device 2 into the bottom of the ocean to ensure the firmness of the present invention and avoid shaking;

S2. According to the characteristics of the ocean current in the installed area, the rotating motor 341 drives the screw 342 to rotate, and the screw 342 adjusts the steering position of the turbine generator 347 through the limit rod 344, so that the turbine generator 347 is in the same direction as the ocean current , the ocean current can drive the turbine generator 347 to continuously generate electricity;

S3. When the ocean produces large waves, the float mechanism 35 sinks into the sea surface under the action of the waves, and the float mechanism 35 drives the power generation box 31 through the connecting rod 32 to perform power generation, thereby realizing the utilization of ocean wave energy;

S4. When the ocean beats the float mechanism 35, the connecting plate 352 in the float mechanism 35 rotates inwardly through the pin shaft, and the connecting plate 352 drives the power generating rod 354 to shrink, and the generating rod 354 can then generate electricity, and the return spring 353 Playing the role of reset, the elastic pad can prevent the power generation pole 354 from being damaged due to collision, and then can play a role in efficient utilization of ocean energy.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A combined ocean energy power generation equipment, comprising a base plate (1), a fixing device (2) and a power generation device (3), characterized in that: the base plate (1) is in a rectangular structure, and the lower end of the base plate (1) is symmetrical A fixing device (2) is installed, and a power generating device (3) is evenly installed on the upper end of the bottom plate (1); wherein: The fixing device (2) includes a fixing seat (21), a fixing column (22) and a fixing mechanism (23), the lower end of the base plate (1) is uniformly equipped with a fixing seat (21), and the lower end of the fixing seat (21) is A fixed column (22) is fixedly installed, and the fixed column (22) has a tapered structure. A cavity is arranged inside the fixed column (22), and a fixing mechanism (23) is installed inside the cavity; The power generation device (3) includes a power generation box (31), a connecting rod (32), a support frame (33), a rotating mechanism (34) and a float mechanism (35), and the upper end of the bottom plate (1) is uniformly installed with Generating box (31), generating box (31) is rectangular structure, and the middle part of generating box (31) is provided with circular hollow groove, and connecting rod (32) is installed inside circular hollow groove, and connecting rod (32) lower end outside is installed with Bracing frame (33), the lower end of bracing frame (33) is installed on the generating box (31), and connecting rod (32) middle part is equipped with rotating mechanism (34), and connecting rod (32) upper end is equipped with float mechanism (35); Described generating box (31) comprises box body (311), sliding bar (312), connection spring (313), rotating gear (314), rack plate (315), adjusting gear (316) and generator (317 ), the box (311) is installed on the base plate (1), and the middle part of the box (311) is provided with a sliding bar (312), the sliding bar (312) is a T-shaped structure, and the upper end of the sliding bar (312) is connected to The sliding groove at the lower end of the connecting rod (32) is slidably connected, and a connecting spring (313) is installed between the upper end of the sliding rod (312) and the sliding groove, and grooves are arranged symmetrically inside the box body (311), and the groove and the circular empty groove Connected to each other, the inside of the groove is equipped with a rotating gear (314) through a bearing, and the inside of the rotating gear (314) is meshed with an adjusting gear (316), and the adjusting gear (316) is installed on the input shaft of the generator (317), and the generator ( 317) is installed inside the groove, and the outer side of the rotating gear (314) is engaged with a rack plate (315), and the rack plate (315) is installed on the outer side of the connecting rod (32); Described rotating mechanism (34) comprises rotating motor (341), screw mandrel (342), screw seat (343), limit bar (344), limit slot (345), turret (346) and turbine generator (347), the inner side of the middle part of the connecting rod (32) is provided with a connecting groove, the inner upper end of the connecting groove is equipped with a rotating motor (341) through the motor seat, and a screw mandrel (342) is installed on the output shaft of the rotating motor (341) , the lower end of the screw rod (342) is connected with the connecting rod (32) through a pin shaft, and the threaded seat (343) is evenly arranged on the screw rod (342), and the limiting rod (344) is symmetrically installed on the outer side of the threaded seat (343). The outside of the middle part of the rod (32) is connected with a turret (346) by a sliding fit, the inside of the turret (346) is uniformly provided with a limit groove (345), and the outside of the turret (346) is equipped with a turbine generator (347). 2. A combined ocean energy generating equipment according to claim 1, characterized in that: the buoy mechanism (35) includes a floating plate (351), a connecting plate (352), a return spring (353), a power generating rod (354) and elastic pad, the floating plate (351) is installed on the upper end of the connecting rod (32), the cross section of the floating plate (351) is a U-shaped structure, and the inner left end of the floating plate (351) is equipped with a connecting plate through a pin shaft (352), between the connecting plate (352) right end and the floating plate (351) middle part, a power generating rod (354) is installed by a bearing pin, and a return spring (353) is arranged symmetrically on the outside of the generating rod (354), and the floating plate (351) The inner right side is fitted with elastic pads. 3. A combined ocean energy power generation device according to claim 2, characterized in that: the power generation pole (354) includes a connecting frame (3541), a partition (3542), a driving gear (3543), a sliding plate (3544) and micro-generator (3545), the cross-section of the connecting frame (3541) is a rectangular hollow structure, and a partition (3542) is installed inside the connecting frame (3541), and the upper end of the partition (3542) is evenly equipped with micro Generator (3545), the drive gear (3543) is evenly installed on the lower end of the partition (3542) through the pin shaft, the drive gear (3543) is connected with the input shaft of the micro generator (3545), and the middle part of the lower end of the partition (3542) passes through The slide plate (3544) is connected in a sliding fit manner, and the outside of the slide plate (3544) is uniformly provided with locking teeth, and the locking teeth mesh with the driving gear (3543). 4. A combined ocean energy generating equipment according to claim 1, characterized in that: the support frame (33) includes a support rod (331), a fixed ring (332) and a rotating ring (333), the The lower side of the connecting rod (32) is provided with a fixed ring (332), the lower end of the fixed ring (332) is installed on the upper end of the generator box (31) through the support rod (331), and the rotating ring (333) is installed inside the fixed ring (332). ), the inside of the rotating ring (333) is evenly equipped with balls. 5. A combined ocean energy generating equipment according to claim 1, characterized in that: the fixing mechanism (23) includes a fixing rod (231), a rotating seat (232), a support rod (233) and a connection Spring (234), the fixed rod (231) is installed inside the cavity, the outer side of the fixed rod (231) is evenly equipped with a rotating seat (232), and the inside of the rotating seat (232) is equipped with a pole (233) through a pin shaft , a connecting spring (234) is installed between the upper end of the pole (233) and the fixed rod (231). 6. A combined ocean energy power generation device according to claim 1, characterized in that: the limit groove (345) is arranged obliquely downward along the inner side wall of the turret (346), and the limit groove (345) The inside is connected to the outer end of the limit rod (344) through a sliding fit, and the outside of the limit rod (344) is in an arc-shaped structure.

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