A plant irrigation device with adjustable spray pattern

Abstract

The application relates to the field of irrigation equipment and discloses a plant irrigation equipment capable of adjusting a spraying mode, which comprises a mounting seat mechanism and a plant irrigation mechanism, the plant irrigation mechanism comprises an external fixed spherical shell, the external fixed spherical shell is arranged in a large spherical shell shape, an irrigation switching piece is arranged in the internal part of the external fixed spherical shell, the irrigation switching piece comprises an internal rotating spherical shell mounted in the internal part of the external fixed spherical shell, the outer wall of the internal rotating spherical shell is tightly attached to the inner wall of the external fixed spherical shell, pipe shafts are uniformly arranged on the arc-shaped top wall of the internal rotating spherical shell, a bottom plate is fixedly installed at the bottom end of the internal rotating spherical shell, a watering pipe is fixedly installed at the bottom end of the bottom plate, an arc surface is arranged on the bottom end wall of the watering pipe, and a water flow control piece is arranged in the internal part of the internal rotating spherical shell. The irrigation mode can be conveniently adjusted, and the plant is conveniently planted by arranging the sprinkling irrigation holes and the watering pipes on the top and bottom of the bottom plate and realizing the switching of watering and sprinkling irrigation through the sprinkling irrigation holes and the watering pipes.

Description

Technical Field

[0001] This invention belongs to the field of irrigation equipment, specifically a plant irrigation device with an adjustable spraying mode. Background Technology

[0002] According to the patent document with authorization announcement number "CN210124185U" and invention title "An Irrigation Device for Garden Landscape Plants," the description states that when irrigating trees, the irrigation pipe is bent and fixed around the base of the tree in the soil. The ends of the irrigation pipe can be connected and locked by a first and a second clamp to keep the irrigation pipe in a circular state. Then, the inlet of the irrigation pipe is connected to the irrigation water circuit. During the fixing of the irrigation pipe, the outlet is squeezed by the soil and moves the valve core upward, opening the flow channel of the valve body. The water in the irrigation pipe flows sequentially through the outlet and the valve body, and automatically flows out from the outlet hole on the ring wall of the outlet. Because the outlets are evenly spaced on the irrigation pipe, the plants within the range can be evenly irrigated. When irrigation stops, there is no need to close the main water valve; simply pull the irrigation pipe off the ground. When the outlet is off the ground, the spring pushes the valve core and the outlet back to their original state, closing the flow channel of the valve body and automatically stopping the water flow from the outlet. However, the following defects still exist: There are many ways to irrigate plants, such as ordinary watering and sprinkler irrigation. However, different plants and different growth stages of the same plant require different irrigation methods, and existing plant irrigation equipment can only perform a single irrigation operation. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a plant irrigation device with an adjustable spraying mode, which effectively solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a plant irrigation device with an adjustable spraying mode, comprising a mounting base mechanism and a plant irrigation mechanism, wherein the plant irrigation mechanism comprises an outer fixed spherical shell, the outer fixed spherical shell being configured in a large hemispherical shape, and an irrigation switching component being disposed inside the outer fixed spherical shell; The irrigation switching device includes an inner rotating spherical shell installed inside an outer fixed spherical shell. The outer wall of the inner rotating spherical shell is in close contact with the inner wall of the outer fixed spherical shell. Pipe shafts are evenly distributed on the arc-shaped top wall of the inner rotating spherical shell. A base plate is fixedly installed at the bottom end of the inner rotating spherical shell. An irrigation pipe is fixedly installed at the bottom end of the base plate. The bottom end wall of the irrigation pipe is provided with an arc surface. A water flow control device is installed inside the inner rotating spherical shell.

[0005] Preferably, a tube shaft is coaxially mounted on one side of the inner rotating spherical shell, the tube shaft is connected to the inner cavity of the inner rotating spherical shell, and a gear is coaxially mounted on the tube shaft.

[0006] Preferably, a connecting block is fixedly installed on one side of the external fixed spherical shell, and sliders are symmetrically installed on both sides of the connecting block. Rotary grooves are opened on the side of the external fixed spherical shell near the connecting block and on the inner side of the connecting block. The tube shaft is set inside the rotary groove, and a rotating sealing ring is installed between the outer wall of the tube shaft and the inner wall of the rotary groove.

[0007] Preferably, a connecting sleeve is rotatably installed on the end of the tube shaft away from the internal rotating spherical shell, a rotating sealing ring is installed between the connecting sleeve and the tube shaft, a connecting hose is installed on one end of the connecting sleeve, and a water tank containing a water pump is connected to one end of the connecting hose.

[0008] Preferably, the water flow control component includes a conical groove formed on the inner wall of the irrigation pipe near the inner rotating spherical shell, wherein the diameter of the end of the conical groove near the inner rotating spherical shell is larger than the diameter of the end of the conical groove away from the inner rotating spherical shell, and a conical block is provided inside the conical groove, with the outer wall of the conical block in close contact with the inner wall of the conical groove.

[0009] Preferably, a hemispherical block is fixedly installed at the top of the conical block, the hemispherical block is located inside the inner rotating spherical shell, and a top plate is fixedly installed at the top of the hemispherical block.

[0010] Preferably, two fixed cylinders are symmetrically installed at the bottom end of the base plate, and two rod grooves are symmetrically opened on the base plate. The two rod grooves are respectively connected to the two fixed cylinders. A limit plate is movably installed inside the fixed cylinder, and a piston rod is fixedly installed at the top end of the limit plate. The piston rod passes through the rod groove and enters the interior of the rotating spherical shell, and is fixedly connected to the top plate. The outer wall of the piston rod is in close contact with the inner wall of the rod groove. Springs are symmetrically installed at the bottom end of the top plate, and the bottom end of the springs is fixedly connected to the base plate. A magnetic block is installed on the limit plate, and an electromagnet is installed at the bottom end of the fixed cylinder.

[0011] Preferably, the mounting base mechanism includes a base plate, with a base symmetrically mounted on the bottom end of the base plate. A longitudinal groove is formed on the base plate, and the connecting block and gear are both located inside the longitudinal groove. Sliding grooves are symmetrically formed on the inner walls of both sides of the longitudinal groove. The slider is slidably connected to the sliding groove. A screw is rotatably mounted inside one of the sliding grooves. The screw is threadedly connected to the slider. The top end of the screw is fixedly connected to the output shaft of the drive motor. The drive motor is fixedly mounted on the top end of the base plate.

[0012] Preferably, a toothed plate is fixedly installed on one side wall of the longitudinal groove, and the toothed plate is meshed with a gear.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention provides a spray hole and an irrigation pipe respectively at the top and bottom of the base plate. When the inner rotating spherical shell is inside the outer fixed spherical shell, the spray hole is closed by the inner wall of the outer fixed spherical shell. When the irrigation pipe is inside the outer fixed spherical shell, the irrigation pipe is closed by the inner wall of the outer fixed spherical shell. The spray hole and irrigation pipe enable the switching between irrigation and spraying, which facilitates the adjustment of the irrigation mode and makes plant planting easier. 2. In this invention, the external fixed spherical shell is driven to move longitudinally by a drive motor, and the gear meshes with the toothed plate, so that the longitudinal movement of the external fixed spherical shell can drive the internal rotating spherical shell to rotate inside the external fixed spherical shell, thereby switching the irrigation mode. When switching from watering to sprinkler irrigation, the equipment moves upward, so that the equipment is close to the ground during watering, and moves above the plants during sprinkler irrigation, making it convenient to use. 3. In this invention, the gear meshes with the toothed plate, causing the pipe shaft to rotate and drive the internal rotating spherical shell to rotate. This allows for adjustment of the orientation of the irrigation pipe and the orientation of the sprinkler holes, thus facilitating the adjustment of the irrigation direction and the sprinkler direction and expanding the irrigation range. 4. In this invention, a water passage gap is formed between the conical groove and the conical block inside the irrigation pipe. The upward movement distance of the conical block is adjusted by controlling the resistance value of the external circuit of the electromagnet, thereby adjusting the size of the water passage gap. This makes it convenient to adjust the amount of water during irrigation and easy to use. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the plant irrigation equipment with adjustable spraying mode according to the present invention; Figure 2 This is a schematic diagram of the mounting base mechanism of the present invention; Figure 3 This is a schematic diagram of the plant irrigation mechanism of the present invention; Figure 4 This is a schematic diagram of the connection structure between the outer fixed spherical shell and the inner rotating spherical shell of the present invention; Figure 5 This is a schematic diagram of the external fixed spherical shell structure of the present invention; Figure 6 This is a schematic diagram of the irrigation switching component structure of the present invention; Figure 7 This is a schematic diagram of the water flow control component of the present invention; In the diagram: 1. Mounting base mechanism; 101. Seat plate; 102. Base; 103. Longitudinal groove; 104. Slide groove; 105. Screw; 106. Drive motor; 107. Gear plate; 2. Plant irrigation mechanism; 201. External fixed spherical shell; 202. Connecting block; 203. Slider; 204. Rotating groove; 205. Irrigation switching component; 2051. Internal rotating spherical shell; 2052. Pipe shaft; 2053. Gear; 2054. Sprinkler hole ; 2055, base plate; 2056, irrigation pipe; 2057, arc surface; 206, water flow control component; 2061, conical groove; 2062, conical block; 2063, hemispherical block; 2064, fixing cylinder; 2065, rod groove; 2066, limiting plate; 2067, piston rod; 2068, top plate; 2069, spring; 20610, magnet; 20611, electromagnet; 207, connecting sleeve; 208, connecting hose. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] Example 1, by Figures 1-7 The present invention relates to a plant irrigation device with an adjustable spraying mode, comprising a mounting base mechanism 1 and a plant irrigation mechanism 2.

[0018] Mounting mechanism 1 includes a base plate 101, with a base 102 symmetrically mounted on the bottom end of the base plate 101. A longitudinal groove 103 is provided on the base plate 101. The connecting block 202 and the gear 2053 are both located inside the longitudinal groove 103. Sliding grooves 104 are symmetrically provided on the inner walls of both sides of the longitudinal groove 103. A screw 105 is rotatably mounted inside one of the sliding grooves 104. The top end of the screw 105 is fixedly connected to the output shaft of the drive motor 106. The drive motor 106 is fixedly mounted on the top end of the base plate 101. A toothed plate 107 is fixedly mounted on one side wall of the longitudinal groove 103.

[0019] The plant irrigation mechanism 2 includes an external fixed spherical shell 201, which is configured in the shape of a large hemispherical shell, and an irrigation switching component 205 is provided inside the external fixed spherical shell 201.

[0020] The irrigation switching component 205 includes an inner rotating spherical shell 2051 installed inside the outer fixed spherical shell 201. The outer wall of the inner rotating spherical shell 2051 is in close contact with the inner wall of the outer fixed spherical shell 201. Tube shafts 2052 are evenly distributed on the arc-shaped top wall of the inner rotating spherical shell 2051. A base plate 2055 is fixedly installed at the bottom end of the inner rotating spherical shell 2051. An irrigation pipe 2056 is fixedly installed at the bottom end of the base plate 2055. The bottom end wall of the irrigation pipe 2056 is provided with an arc surface 2057. Sprinklers are respectively provided at the top and bottom of the base plate 2055. The irrigation hole 2054 and the irrigation pipe 2056 are sealed by the inner wall of the outer fixed spherical shell 201 when the inner rotating spherical shell 2051 is inside the outer fixed spherical shell 201, and the irrigation pipe 2056 is sealed by the inner wall of the outer fixed spherical shell 201 when the inner rotating spherical shell 2051 is inside the outer fixed spherical shell 201. The irrigation hole 2054 and the irrigation pipe 2056 are used to switch between watering and sprinkler irrigation, which facilitates the adjustment of the irrigation mode and facilitates plant planting. The inner rotating spherical shell 2051 is equipped with a water flow control component 206.

[0021] A tube shaft 2052 is coaxially mounted on one side of the inner rotating spherical shell 2051. The tube shaft 2052 is connected to the inner cavity of the inner rotating spherical shell 2051. A gear 2053 is coaxially mounted on the tube shaft 2052. The gear plate 107 meshes with the gear 2053. The drive motor 106 drives the outer fixed spherical shell 201 to move longitudinally. The gear 2053 meshes with the gear plate 107, so that the longitudinal movement of the outer fixed spherical shell 201 can drive the inner rotating spherical shell 2051 to rotate inside the outer fixed spherical shell 201. The system switches between irrigation modes. When switching to sprinkler irrigation, the equipment moves upward, bringing it closer to the ground during watering and above the plants during sprinkler irrigation for easier use. Simultaneously, the meshing connection between gear 2053 and toothed plate 107 causes the tube shaft 2052 to rotate, driving the internal rotating spherical shell 2051 to rotate. This allows adjustment of the orientation of the irrigation pipe 2056 and the sprinkler hole 2054, facilitating the adjustment of the watering and sprinkler directions and expanding the irrigation range.

[0022] A connecting block 202 is fixedly installed on one side of the external fixed spherical shell 201. Slider blocks 203 are symmetrically installed on both sides of the connecting block 202. The sliders 203 are slidably connected to the slide groove 104. The screw 105 is threadedly connected to the slider 203. Rotary grooves 204 are opened on the side of the external fixed spherical shell 201 near the connecting block 202 and on the inner side of the connecting block 202. The tube shaft 2052 is set inside the rotary groove 204, and a rotating sealing ring is installed between the outer wall of the tube shaft 2052 and the inner wall of the rotary groove 204.

[0023] A connecting sleeve 207 is rotatably installed on the end of the tube shaft 2052 away from the internal rotating spherical shell 2051. A rotating sealing ring is installed between the connecting sleeve 207 and the tube shaft 2052. A connecting hose 208 is installed on one end of the connecting sleeve 207. A water tank containing a water pump is connected to one end of the connecting hose 208. The tube shaft 2052 is rotatably connected to the connecting sleeve 207, so that water can still be introduced after the internal rotating spherical shell 2051 rotates.

[0024] The water flow control component 206 includes a conical groove 2061 formed on the inner wall of the irrigation pipe 2056 near the inner rotating spherical shell 2051. The diameter of the end of the conical groove 2061 near the inner rotating spherical shell 2051 is larger than the diameter of the end of the conical groove 2061 away from the inner rotating spherical shell 2051. A conical block 2062 is provided inside the conical groove 2061. The outer wall of the conical block 2062 is in close contact with the inner wall of the conical groove 2061. A hemispherical block 2063 is fixedly installed at the top of the conical block 2062. The hemispherical block 2063 is located inside the inner rotating spherical shell 2051. A top plate 2068 is fixedly installed at the top of the hemispherical block 2063. Two fixed cylinders 2064 are symmetrically installed at the bottom end of the bottom plate 2055. Two rod grooves 2065 are symmetrically formed on the bottom plate 2055. The two rod grooves 2065 are respectively connected to the two fixed cylinders 2064. The interior of the fixed cylinders 2064 is movable. A limiting plate 2066 is installed, and a piston rod 2067 is fixedly installed at the top of the limiting plate 2066. The piston rod 2067 passes through the rod groove 2065 and enters the interior of the internal rotating spherical shell 2051, and is fixedly connected to the top plate 2068. The outer wall of the piston rod 2067 is in close contact with the inner wall of the rod groove 2065. Springs 2069 are symmetrically installed at the bottom of the top plate 2068, and the bottom of the springs 2069 is fixedly connected to the bottom plate 2055. A magnetic block 20610 is installed on the limiting plate 2066, and an electromagnet 20611 is installed at the bottom of the fixed cylinder 2064. A water passage gap is formed between the conical groove 2061 and the conical block 2062 in the irrigation pipe 2056. The upward movement distance of the conical block 2062 is adjusted by controlling the resistance value of the external circuit of the electromagnet 20611, thereby adjusting the size of the water passage gap, which facilitates the adjustment of the water volume during irrigation and makes it convenient to use.

[0025] Working principle: When the plant needs to be watered, the inner rotating spherical shell 2051 at the top of the base plate 2055 is located in the inner cavity of the outer fixed spherical shell 201, while the irrigation pipe 2056 at the bottom of the base plate 2055 is located below the outer fixed spherical shell 201. This causes the spray hole 2054 on the inner rotating spherical shell 2051 to be sealed by the inner wall of the outer fixed spherical shell 201. When the water pump in the water pump tank is turned on, the water used for irrigation in the water pump tank is introduced into the inner rotating spherical shell 2051 through the connecting hose 208 and the pipe shaft 2052, and then discharged from the irrigation pipe 2056 to irrigate the roots of the plant. Simultaneously, by controlling the energization of electromagnet 20611, which is electrically connected to a power source, a switch, and a rheostat, when electromagnet 20611 is energized, it pushes piston rod 2067 upward, thereby causing conical block 2062 to move upward, creating a water passage gap between conical groove 2061 and conical block 2062. Water enters the irrigation pipe 2056 from between conical groove 2061 and conical block 2062 and then exits for irrigation. At the same time, the rheostat controls the magnitude of the repulsive force of electromagnet 20611 on magnetic block 20610, thereby controlling the size of the water passage gap between conical groove 2061 and conical block 2062, thus controlling the irrigation water volume. A hemispherical block 2063 is installed at the top of conical block 2062 to prevent water from accumulating on top of conical block 2062 and facilitate water drainage from the water passage gap. When irrigation is needed, the drive motor 106 is turned on, driving the screw 105 to rotate. The screw 105 is threadedly connected to the slider 203 on the connecting block 202, thereby causing the connecting block 202 and the outer fixed spherical shell 201 to move upward, thus lifting the outer fixed spherical shell 201. During the upward movement, the gear 2053 on the tube shaft 2052 meshes with the toothed plate 107, thereby causing the tube shaft 2052 to rotate, which in turn causes the inner rotating spherical shell 2051 to rotate inside the outer fixed spherical shell 201, making the inner rotating spherical shell 2051 rotate. The part 51 with the sprinkler hole 2054 rotates to the bottom of the outer fixed spherical shell 201, and the irrigation pipe 2056 enters the interior of the outer fixed spherical shell 201. The end face of the irrigation pipe 2056 is provided with an arc surface 2057, so that the arc surface 2057 is in close contact with the inner wall of the outer fixed spherical shell 201. At this time, water can enter the interior of the rotating spherical shell 2051 and form small water droplets through the sprinkler hole 2054 when sprayed out, spraying the plants below to achieve sprinkler irrigation. At the same time, when moving, the outer fixed spherical shell 201 is moved upward to above the plants to facilitate sprinkler irrigation. Simultaneously, when the external fixed spherical shell 201 moves longitudinally, regardless of whether the irrigation pipe 2056 is located below the external fixed spherical shell 201 or the sprinkler hole 2054 is located below the external fixed spherical shell 201, the engagement of the gear 2053 and the toothed plate 107 causes the pipe shaft 2052 to rotate, thereby adjusting the orientation of the irrigation pipe 2056 and the sprinkler hole 2054, expanding the irrigation range and improving the irrigation effect.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plant irrigation device with an adjustable spraying mode, comprising a mounting base mechanism (1) and a plant irrigation mechanism (2), characterized in that: The plant irrigation mechanism (2) includes an outer fixed spherical shell (201), which is configured in the shape of a large hemispherical shell, and an irrigation switching component (205) is provided inside the outer fixed spherical shell (201). The irrigation switching component (205) includes an inner rotating spherical shell (2051) installed inside the outer fixed spherical shell (201). The outer wall of the inner rotating spherical shell (2051) is in close contact with the inner wall of the outer fixed spherical shell (201). Sprinkler holes (2054) are evenly provided on the arc-shaped top wall of the inner rotating spherical shell (2051). A base plate (2055) is fixedly installed at the bottom end of the inner rotating spherical shell (2051). An irrigation pipe (2056) is fixedly installed. The bottom end wall of the irrigation pipe (2056) is provided with an arc surface (2057). A water flow control component (206) is provided inside the internal rotating spherical shell (2051). A pipe shaft (2052) is coaxially installed on one side of the internal rotating spherical shell (2051). The pipe shaft (2052) is connected to the inner cavity of the internal rotating spherical shell (2051). A gear (2053) is coaxially installed on the pipe shaft (2052). A connecting block (202) is fixedly installed on one side of the external fixed spherical shell (201). Slider blocks (203) are symmetrically installed on both sides of the connecting block (202). Rotary grooves (204) are opened on the side of the external fixed spherical shell (201) near the connecting block (202) and on the inner side of the connecting block (202). The tube shaft (2052) is set inside the rotating groove (204), and a rotating sealing ring is installed between the outer wall of the tube shaft (2052) and the inner wall of the rotating groove (204). The mounting base mechanism (1) includes a base plate (101), a base (102) is symmetrically mounted on the bottom end of the base plate (101), a longitudinal groove (103) is provided on the base plate (101), a connecting block (202) and a gear (2053) are both located inside the longitudinal groove (103), and sliding grooves (104) are symmetrically provided on the inner walls of both sides of the longitudinal groove (103), the slider (203) is slidably connected to the sliding groove (104), a screw (105) is rotatably mounted inside one of the sliding grooves (104), the screw (105) is threadedly connected to the slider (203), the top end of the screw (105) is fixedly connected to the output shaft of the drive motor (106), the drive motor (106) is fixedly mounted on the top end of the base plate (101), and a toothed plate (107) is fixedly mounted on one side wall of the longitudinal groove (103), the toothed plate (107) is meshed with the gear (2053).

2. The plant irrigation device with adjustable spraying mode according to claim 1, characterized in that: A connecting sleeve (207) is rotatably installed on the end of the tube shaft (2052) away from the inner rotating spherical shell (2051). A rotating sealing ring is installed between the connecting sleeve (207) and the tube shaft (2052). A connecting hose (208) is installed on one end of the connecting sleeve (207), and a water tank containing a water pump is connected to one end of the connecting hose (208).

3. The plant irrigation device with adjustable spraying mode according to claim 1, characterized in that: The water flow control component (206) includes a conical groove (2061) opened on the inner wall of the irrigation pipe (2056) near the inner rotating spherical shell (2051), wherein the diameter of the end of the conical groove (2061) near the inner rotating spherical shell (2051) is larger than the diameter of the end of the conical groove (2061) away from the inner rotating spherical shell (2051), and a conical block (2062) is provided inside the conical groove (2061), the outer wall of the conical block (2062) being in close contact with the inner wall of the conical groove (2061).

4. The plant irrigation device with adjustable spraying mode according to claim 3, characterized in that: A hemispherical block (2063) is fixedly installed at the top of the conical block (2062). The hemispherical block (2063) is located inside the inner rotating spherical shell (2051). A top plate (2068) is fixedly installed at the top of the hemispherical block (2063).

5. The plant irrigation device with adjustable spraying mode according to claim 4, characterized in that: Two fixed cylinders (2064) are symmetrically installed at the bottom end of the base plate (2055). Two rod grooves (2065) are symmetrically opened on the base plate (2055). The two rod grooves (2065) are respectively connected to the two fixed cylinders (2064). A limiting plate (2066) is movably installed inside the fixed cylinder (2064). A piston rod (2067) is fixedly installed at the top of the limiting plate (2066). The piston rod (2067) passes through the rod groove (2065) and enters... The piston rod (2067) rotates inside the inner spherical shell (2051) and is fixedly connected to the top plate (2068). The outer wall of the piston rod (2067) is in close contact with the inner wall of the rod groove (2065). Springs (2069) are symmetrically installed at the bottom end of the top plate (2068). The bottom end of the springs (2069) is fixedly connected to the bottom plate (2055). A magnetic block (20610) is installed on the limiting plate (2066). An electromagnet (20611) is installed at the bottom end of the fixed cylinder (2064).

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