Heavy duty grass trimmer

Abstract

The present application provides a heavy grass beater, including mounting frame, rotating mechanism, cable knife and driving mechanism, wherein the rotating mechanism is arranged at the bottom of the mounting frame, and the rotating mechanism is provided with a winding and unwinding assembly; the cable knife includes a rope and a cutter, one end of the rope is connected with the cutter, the other end of the rope is connected with the winding and unwinding assembly, the rope can be accommodated in the rotating mechanism due to the winding of the winding and unwinding assembly, and the rope can be extended out of the rotating mechanism due to the unwinding of the winding and unwinding assembly; the driving mechanism is arranged on the mounting frame, the driving mechanism is connected with the rotating mechanism, and the driving mechanism can drive the rotating mechanism to rotate. The cable knife provided by the present application includes a rope and a cutter, the high-speed rotating cutter can cut off the plants to be cleaned, and since the rope is soft, when the cutter collides with a hard object, the rope can be bent and deformed and no longer apply force to the cutter, so that the cutter is prevented from being damaged, and the safety of the grass beater is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of grass trimmers, and more particularly relates to a heavy-duty grass trimmer. BACKGROUND

[0002] Green vegetation is an essential environmental element for human beings, and the awareness of greening is becoming more and more popular. Whether it is a golf course, a football field, a manor, a villa courtyard, or a common residential area, green turf is everywhere, bringing vitality and vitality to people's life. But if left unattended, these turfs will become uneven and disorganized.

[0003] As a garden tool for maintaining turf, grass trimmers are gaining more and more favor from users. A grass trimmer generally rotates a cutting member to trim grass, usually including an elongated extension rod, a head provided at a first end of the extension rod, a first handle provided near a second end of the extension rod, and a second handle provided at the second end of the extension rod. The head includes a grass trimming head and a motor that drives the grass trimming head to rotate. When the grass trimmer is in operation, the grass trimming head is driven to rotate, driving the grass trimming line in the grass trimming head to rotate synchronously to trim the grass.

[0004] However, when facing plants with relatively hard fibers, traditional handheld grass trimmers are difficult to clean the plants that need to be cleaned. At this time, a heavy-duty grass trimmer is needed. A heavy-duty grass trimmer generally uses a fixed metal plate as a cutter to cut and break the plants to be cleaned by high-speed rotation.

[0005] However, in actual use, the ground is not flat, and hard obstacles such as bricks and stones are often left in the grass to be cleaned. If the high-speed rotating cutter collides with the hard obstacle, the cutter may be damaged, and the grass trimmer may be damaged. The flying cutter may even injure the worker. SUMMARY

[0006] The purpose of the present application is to provide a heavy-duty grass trimmer to improve the safety of the grass trimmer in use.

[0007] To achieve the above purpose, the technical solution adopted by the present application is to provide a heavy-duty grass trimmer, comprising a mounting frame, a rotating mechanism, a cable cutter and a driving mechanism, wherein the rotating mechanism is rotatably arranged at the bottom of the mounting frame, and a winding and unwinding assembly is arranged in the rotating mechanism; the cable cutter comprises a rope and a cutter, one end of the rope is connected with the cutter, the other end of the rope is connected with the winding and unwinding assembly, the rope can be accommodated in the rotating mechanism due to the winding of the winding and unwinding assembly, and the rope can be extended out of the rotating mechanism due to the unwinding of the winding and unwinding assembly; the driving mechanism is arranged on the mounting frame, the driving mechanism is connected with the rotating mechanism, and the driving mechanism can drive the rotating mechanism to rotate.

[0008] In a possible implementation, the mounting frame comprises a horizontal plate and two vertical plates, the two vertical plates are arranged at two ends of the horizontal plate, so that the cross section of the mounting frame is in the shape of "Fang", the rotating mechanism is arranged on the bottom surface of the horizontal plate, and the driving mechanism is arranged on the top surface of the horizontal plate.

[0009] In a possible implementation, the rotating mechanism comprises a pivoting cylinder and a driving rod, the pivoting cylinder is internally provided with a mounting cavity, the driving rod is arranged at the top of the pivoting cylinder, the horizontal plate is provided with a through hole, the driving rod extends out of the horizontal plate through the through hole, and the driving mechanism is connected with the driving rod.

[0010] In a possible implementation, the winding and unwinding assembly comprises a winding cylinder and a torsion spring, the winding cylinder is rotatably arranged in the mounting cavity, the torsion spring is connected between the winding cylinder and the pivoting cylinder, the winding cylinder can rotate to store energy in the torsion spring, and the torsion spring can drive the winding cylinder to reset, the pivoting cylinder is provided with an extension hole, the rope extends through the extension hole, one end of the rope is connected with the winding cylinder, and when the torsion spring is in a natural state, the rope is completely wound on the winding cylinder.

[0011] In a possible implementation, two pivoting cylinders are arranged, two rope knives are connected to each winding cylinder, the connecting points of the two rope knives and the winding cylinder are arranged at two ends of the same diameter of the winding cylinder, and the two diameters of the winding cylinder provided with the rope knives are arranged perpendicularly to each other.

[0012] In a possible implementation, the driving mechanism comprises two driven gears, a transmission chain, a driving gear and a driving motor, the driven gears correspond to the driving rods one by one, the driven gears are arranged on the corresponding driving rods, the transmission chain segments are respectively engaged with the two driven gears, the driving motor is arranged on the top surface of the horizontal plate, the driving gear is connected to the power output end of the driving motor, and the driving gear is engaged with the transmission chain.

[0013] In a possible implementation, the distance between the two pivoting cylinders is the same as the distance between the pivoting cylinder and the adjacent vertical plate, and the length of the rope knife arranged outside the pivoting cylinder is the same as the distance between the two pivoting cylinders.

[0014] In a possible implementation, the rope is selected to be a steel wire rope, the overhead view of the cutting knife is in the shape of an isosceles triangle, the other end of the cutting knife is connected with the steel wire rope relative to the sharp end of the cutting knife, and the thickness of the cutting knife gradually decreases from the middle to both sides.

[0015] In a possible implementation, the heavy grass trimmer further comprises a cover body, the cover body is provided with an opening at the bottom, the cover body is detachably arranged on the top of the horizontal plate, the cover body is provided with a connecting assembly, the connecting assembly is used for connecting with an external driving device, and the driving device can drive the heavy grass trimmer to move.

[0016] In a possible implementation, a plurality of pivot shafts are arranged between the two vertical plates, the same end of the pivot shafts is provided with a transmission gear, a first chain is arranged in meshing with each transmission gear, a connecting gear is arranged on one of the pivot shafts, a pivot motor is arranged on the vertical plate, a first gear is arranged at the power output end of the pivot motor, and the first gear is in meshing with the connecting gear; the top of each pivot shaft is located on the same plane, which is a conveying plane, the conveying plane is arranged in an inclined manner, the conveying plane and the rear end of the mounting frame enclose a discharge port, and a storage bag is connected to the discharge port; a guide plate is arranged between the two vertical plates, the guide plate is located on the front side of the pivot shaft, and the guide plate is arranged in an inclined manner, and the rear end of the guide plate is located above the conveying plane.

[0017] The heavy grass trimmer provided by the application has the following beneficial effects: compared with the prior art, the rope cutter including a rope and a cutter is arranged, the cutter rotating at a high speed can cut off the plants to be cleaned, the cutting ability of the rope is improved due to the cutter, the rope can break the cut-off plants, and the rope can bend and deform to stop applying force to the cutter when the cutter collides with a hard object, so that the cutter is prevented from being damaged, and the safety of the grass trimmer is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0019] Figure 1 A structural schematic diagram of the heavy grass trimmer provided by the embodiment of the application is shown in the figure.

[0020] Figure 2 A structural schematic diagram of one angle of the mounting frame provided by the embodiment of the application is shown in the figure.

[0021] Figure 3 A structural schematic diagram of another angle of the mounting frame provided by the embodiment of the application is shown in the figure.

[0022] Figure 4 A structural schematic diagram of the heavy grass trimmer provided by the embodiment of the application is shown in the figure. Figure 2 An enlarged view of part A of the figure.

[0023] Figure 5 The structure schematic diagram inside the pivot cylinder is provided for the embodiment of the present application.

[0024] In the drawings, the reference signs are as follows:

[0025] 1, mounting frame; 2, pivot cylinder; 3, cable cutter; 4, driving motor; 5, cover body; 6, pivot shaft;

[0026] 101, horizontal plate; 102, vertical plate;

[0027] 201, driving rod; 202, winding cylinder; 203, torsional spring; 204, mounting cavity;

[0028] 301, rope; 302, cutting knife;

[0029] 401, driven gear; 402, transmission chain; 403, driving gear;

[0030] 501, connecting assembly;

[0031] 601, transmission gear; 602, first chain; 603, storage bag; 604, pivot motor; 605, first gear; 606, connecting gear; 607, guide plate. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clear and explicit, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be further explained that the drawings and embodiments of the present application mainly describe and explain the concept of the present application, and on the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described, but those skilled in the art can realize the above-mentioned specific forms and settings by using well-known ways on the premise of understanding the concept of the present application.

[0034] When an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] The terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0036] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly specified.

[0037] Now a heavy grass trimmer provided by the present application will be described.

[0038] Please refer to Figure 1 , Figure 2 and Figure 3 , the heavy grass trimmer comprises a mounting frame 1, a rotating mechanism, a cable knife 3 and a driving mechanism, wherein the rotating mechanism is rotatably arranged at the bottom of the mounting frame 1, and a winding and unwinding assembly is arranged in the rotating mechanism; the cable knife 3 comprises a rope 301 and a cutter 302, one end of the rope 301 is connected with the cutter 302, the other end of the rope 301 is connected with the winding and unwinding assembly, the rope 301 can be accommodated in the rotating mechanism due to the winding of the winding and unwinding assembly, and the rope 301 can be extended out of the rotating mechanism due to the unwinding of the winding and unwinding assembly; the driving mechanism is arranged on the mounting frame 1, the driving mechanism is connected with the rotating mechanism, and the driving mechanism can drive the rotating mechanism to rotate.

[0039] The heavy grass trimmer provided by the present embodiment has the following beneficial effects: compared with the prior art, the heavy grass trimmer provided by the present embodiment is provided with the cable knife 3 comprising the rope 301 and the cutter 302, the high-speed rotating cutter 302 can cut off the plants to be cleaned, due to the presence of the cutter 302, the cutting ability of the rope 301 is improved, the rope 301 can break the cut-off plants, and due to the fact that the rope 301 is soft, when the cutter 302 collides with a hard object, the rope 301 can bend and deform and no longer apply force to the cutter 302, so that the cutter 302 is prevented from being damaged, and the safety of the grass trimmer in use is improved.

[0040] Based on the above design idea, the mounting frame comprises a horizontal plate 101 and two vertical plates 102, the two vertical plates 102 are arranged at the two ends of the horizontal plate 101, so that the cross section of the mounting frame 1 is in the shape of " ", the rotating mechanism is arranged on the bottom surface of the horizontal plate 101, and the driving mechanism is arranged on the top surface of the horizontal plate 101.

[0041] The height of the vertical plate 102 is greater than the height of the rotating mechanism, so that due to the arrangement of the vertical plate 102, the heavy grass trimmer of the application only needs to abut against the ground when moving, which can prevent the rotating mechanism from being damaged due to improper operation, and the rotating mechanism from contacting the ground or hard objects, thereby improving the convenience of use of the heavy grass trimmer of the application.

[0042] In combination with the figures shown in Figure 2 , Figure 3 and Figure 5 , the rotating mechanism includes a pivoting cylinder 2 and a driving rod 201, the inside of the pivoting cylinder 2 is provided with a mounting cavity 204, the driving rod 201 is arranged at the top of the pivoting cylinder 2, the horizontal plate is provided with a through hole, the driving rod 201 extends through the hole to above the horizontal plate, and the driving mechanism is connected with the driving rod 201.

[0043] The arrangement of the driving rod 201 facilitates the rotation of the pivoting cylinder 2, and in addition, since the driving rod 201 extends upward to above the horizontal plate, the connection of the driving rod 201 with the driving mechanism is facilitated.

[0044] As shown in Figure 5 , the winding and unwinding assembly includes a winding cylinder 202 and a torsion spring 203, the winding cylinder 202 is rotatably arranged in the mounting cavity 204, the torsion spring 203 is connected between the winding cylinder 202 and the pivoting cylinder 2, the rotation of the winding cylinder 202 can store energy in the torsion spring 203, and the release of the torsion spring 203 can drive the winding cylinder 202 to reset, the pivoting cylinder 2 is provided with an extension hole, a rope 301 passes through the extension hole, and one end of the rope 301 is connected with the winding cylinder 202.

[0045] When the torsion spring 203 is in a natural state, the rope 301 is completely wound on the winding cylinder 202, and at this time, one end of a cutter 302 abuts against the pivoting cylinder 2. When the driving mechanism starts to work, the driving mechanism drives the pivoting cylinder 2 to rotate, and due to the action of centrifugal force, the cutter 302 has a tendency to move away from the pivoting cylinder 2, at this time, the cutter 302 drives the extension to extend outwardly from the pivoting cylinder 2, the rope 301 drives the winding cylinder 202 to rotate, and at this time, the torsion spring 203 starts to store energy.

[0046] When the grass trimming ends, since the driving mechanism stops working, at this time, the rotation speed of the pivoting cylinder 2 starts to slow down, so that the rotation speed of the cutter 302 also starts to slow down, at this time, the pulling force of the cutter 302 on the rope 301 decreases, the torsion spring 203 starts to release energy, drives the winding cylinder 202 to reset, and winds the rope 301 on the winding cylinder 202, thereby preventing the falling rope 301 from being wound and knotted.

[0047] As shown in Figure 3As shown, the pivot cylinder 2 is provided with two, and each winding cylinder 202 is connected with two cable knives 3, and the connection points of the two cable knives 3 and the winding cylinder 202 are arranged at two ends of the same diameter of the winding cylinder 202, and the two diameters of the two winding cylinders 202 provided with the cable knives 3 are arranged perpendicular to each other.

[0048] As shown above, as long as the two pivot cylinders 2 rotate at the same speed at the same time or stop rotating at the same time, the cable knives 3 on the two pivot cylinders 2 will not interfere, and then the cable knives 3 can clean the plants to be cleaned.

[0049] As shown in the figure, Figure 2 The driving mechanism includes two driven gears 401, a transmission chain 402, a driving gear 403 and a driving motor 4, the driven gears 401 correspond to the driving rods 201 one by one, the driven gears 401 are arranged on the corresponding driving rods 201, the transmission chain segments are respectively engaged with the two driven gears 401, the driving motor 4 is arranged on the top surface of the mounting frame, the driving gear 403 is connected to the power output end of the driving motor 4, and the driving gear 403 is engaged with the transmission chain 402.

[0050] In use, the driving motor 4 drives the driving gear 403 to rotate, and since the driving gear 403 is engaged with the transmission chain 402, the driving gear 403 will drive the transmission chain 402 to move, and the transmission chain 402 can drive the two driven gears 401 to rotate, so as to realize the simultaneous rotation or simultaneous stop of the two pivot cylinders 2, and prevent the cable knives 3 on the two pivot cylinders 2 from interfering.

[0051] As shown in the figure, Figure 3 The distance between the two pivot cylinders 2 is the same as the distance between the pivot cylinder 2 and the adjacent vertical plate 102, and the length of the cable knife 3 arranged outside the pivot cylinder 2 is the same as the distance between the two pivot cylinders 2.

[0052] It is worth noting that the cable knives 3 of the two pivot cylinders 2 rotate in turn between the two pivot cylinders 2, which can keep the rope 301 of the cable knife 3 longest, and thus the part of the cable knife 3 extending outside the mounting frame 1 is longer, which is more conducive to cleaning the plants to be cleaned.

[0053] As a preferred technical solution, the rope 301 is selected as a steel wire rope, the top view of the cutter 302 is an isosceles triangle, the other end of the cutter 302 is connected with the steel wire rope relative to the sharp end of the cutter 302, the sharp end of the cutter 302 is a point, which is more easily passed between the two pivot cylinders 2, and prevents the cutter 302 from interfering with the adjacent pivot cylinder 2. The thickness of the cutter 302 gradually decreases from the middle to both sides, which is more conducive to the cutter 302 to cut off the plants to be cleaned.

[0054] As shown in the figure, Figure 1As shown in the figure, the heavy-duty grass trimmer further comprises a cover 5, which is detachably arranged on the top of the horizontal plate and has a bottom opening. The cover 5 is provided with a connecting assembly 501, which is used to connect with an external driving device so that the driving device can drive the heavy-duty grass trimmer to move.

[0055] The cover 5 can effectively protect the driving mechanism and the like inside the cover 5, preventing the driving mechanism from being damaged due to pollution such as dust in the working environment. In addition, the cover 5 can provide a space for the connecting assembly 501, facilitating the external driving device to drive the heavy-duty grass trimmer to move, thereby cleaning different driven weeds.

[0056] Finally, as shown in the figure, Figure 2 and Figure 4 A plurality of pivot shafts 6 are arranged between the two vertical plates 102, and the same end of the pivot shaft 6 is provided with a transmission gear 601. A first chain 602 is arranged in mesh with each transmission gear 601. A connecting gear 606 is arranged on one pivot shaft 6. A pivot motor 604 is arranged on the vertical plate 102, and the power output end of the pivot motor 604 is provided with a first gear 605, which is in mesh with the connecting gear 606. The top of each pivot shaft 6 is located on the same plane, which is a conveying plane. The conveying plane is arranged obliquely, and the conveying plane and the rear end of the mounting frame 1 enclose a discharge port. A storage bag 603 is connected to the discharge port. A guide plate 607 is arranged between the two vertical plates 102, and the guide plate 607 is located on the front side of the pivot shaft 6. The guide plate is arranged obliquely, and the rear end of the guide plate is located above the conveying plane.

[0057] The cut and broken weeds will scatter on the ground. When the mounting frame 1 moves, the guide plate 607 will shovel the weeds and move to the rear of the mounting frame 1 under the resistance of the weeds in front, until the weeds move to the pivot roller and enter the storage bag 6 under the drive of the pivot roller.

[0058] The above is only a preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heavy-duty lawn mower, characterized in that, Comprising: Mounting bracket (1); Rotating mechanism, rotatably disposed at the bottom of the mounting bracket (1), and a winding and unwinding component is provided inside the rotating mechanism; Rope cutter (3), including a rope (301) and a cutter (302), one end of the rope (301) is connected to the cutter (302), the other end of the rope (301) is connected to the winding and unwinding component, the rope (301) can be stored inside the rotating mechanism due to the winding of the winding and unwinding component, and the rope (301) can extend outside the rotating mechanism due to the unwinding of the winding and unwinding component; Driving mechanism, disposed on the mounting bracket (1), the driving mechanism is connected to the rotating mechanism, and the driving mechanism can drive the rotating mechanism to rotate; The mounting bracket includes a cross plate (101) and two vertical plates (102), the two vertical plates (102) are disposed at both ends of the cross plate (101), so that the cross section of the mounting bracket (1) is in a "C" shape, the rotating mechanism is disposed on the bottom surface of the cross plate (101), and the driving mechanism is disposed on the top surface of the cross plate (101); The rotating mechanism includes a pivot cylinder (2) and a driving rod (201), an installation cavity (204) is provided inside the pivot cylinder (2), the driving rod (201) is disposed on the top of the pivot cylinder (2), a through hole is provided on the cross plate, and the driving rod (201) passes through the through hole and extends above the cross plate, and the driving mechanism is connected to the driving rod (201); The winding and unwinding component includes a winding cylinder (202) and a torsion spring (203), the winding cylinder (202) is rotatably disposed inside the installation cavity (204), the torsion spring (203) is connected between the winding cylinder (202) and the pivot cylinder (2), the rotation of the winding cylinder (202) can store energy in the torsion spring (203), and when the torsion spring (203) releases energy, it can drive the winding cylinder (202) to reset, an extension hole is provided on the pivot cylinder (2), the rope (301) passes through the extension hole, one end of the rope (301) is connected to the winding cylinder (202), and when the torsion spring (203) is in a natural state, the rope (301) is completely wound around the winding cylinder (202); There are two pivot cylinders (2), two rope cutters (3) are connected to each winding cylinder (202), the connection points of the two rope cutters (3) and the winding cylinder (2), the two rope cutters (3) are respectively arranged at both ends of the same diameter of the winding cylinder (202), and the two diameters of the two winding cylinders (202) provided with the rope cutters (3) are perpendicular to each other; The rope (301) is soft, when the cutter (302) collides with a hard object, the rope (301) can bend and deform and no longer apply force to the cutter (302).

2. The heavy-duty lawn mower as described in claim 1, characterized in that: The drive mechanism includes two driven gears (401), a transmission chain (402), a drive gear (403), and a drive motor (4). The driven gears (401) correspond one-to-one with the drive rods (201). The driven gears (401) are mounted on the corresponding drive rods (201). The transmission chains (402) mesh with the two driven gears (401) respectively. The drive motor (4) is mounted on the top surface of the horizontal plate. The drive gear (403) is connected to the power output end of the drive motor (4). The drive gear (403) meshes with the transmission chain (402).

3. A heavy-duty lawn mower as described in claim 1, characterized in that: The distance between the two pivot cylinders (2) is the same as the distance between the pivot cylinder (2) and the adjacent vertical plate (102), and the length of the cable knife (3) located outside the pivot cylinder (2) is the same as the distance between the two pivot cylinders (2).

4. A heavy-duty lawn mower as described in claim 3, characterized in that: The rope (301) is selected as a steel wire rope, and the top view of the cutter (302) is an isosceles triangle. The other end of the cutter (302) is connected to the steel wire rope relative to the tip of the cutter (302); the thickness of the cutter (302) gradually decreases from the middle to both sides.

5. A heavy-duty lawn mower as described in claim 1, characterized in that: A heavy-duty lawn mower also includes a cover (5) with an opening at the bottom. The cover (5) is detachably mounted on the top of the cross plate. A connecting component (501) is provided on the cover (5) for connecting to an external drive device, so that the drive device can drive the heavy-duty lawn mower to move.

6. A heavy-duty lawn mower as described in claim 1, characterized in that: Multiple pivot shafts (6) are provided between the two vertical plates (102). A transmission gear (601) is provided at the same end of each pivot shaft (6), and a first chain (602) meshes with each of the transmission gears (601). A connecting gear (606) is provided on one of the pivot shafts (6). A pivot motor (604) is provided on each vertical plate (102). A first gear (605) is provided at the power output end of the pivot motor (604). The first gear (605) meshes with the connecting gear (606). 606) Engagement; The tops of each of the pivot shafts (6) are located on the same plane, which is a conveying plane. The conveying plane is inclined and the rear end of the mounting frame (1) forms a discharge port. A storage bag (603) is connected to the discharge port; A guide plate (607) is provided between the two vertical plates (102). The guide plate (607) is located on the front side of the pivot shaft (6). The guide plate is inclined and the rear end of the guide plate is located above the conveying plane.

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