Central median strip trimming machine

Abstract

The present invention discloses a central median trimmer, which relates to the field of trimming equipment and includes a suspension frame connected to a sweeper, a first connecting rod hingedly connected to the end of the suspension frame, a connecting frame provided at the end of the first connecting rod, a second connecting rod hingedly connected to the connecting frame, a rotating frame hingedly connected to the end of the second connecting rod, a hollow rotary oil cylinder fixedly connected to the rotating frame, a flange at the bottom of the hollow rotary oil cylinder fixedly connected to three extensions, a circular cutter disc fixedly connected to the end of the extension, a rotating shaft passing through the center of the cutter disc, a cutting portion installed after the bottom of the rotating shaft passes through the cutter disc, a hydraulic motor fixedly provided at the top of the hollow rotary oil cylinder, a rotating shaft of the hydraulic motor passing through the hollow rotary oil cylinder and connected to the top of the rotating shaft via three closed transmission belts; the hydraulic motor and the hollow rotary oil cylinder are each connected to a control system, which is provided on the sweeper. The central median trimmer provided by the present invention reduces the cost of weed clearing and improves efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of trimming equipment, in particular to a trimmer for a central dividing strip. Background Art

[0002] For a long time, the increasing volume of traffic on highways has posed a significant challenge to the maintenance of median greening. Greening maintenance includes watering, pruning, and clearing trash and weeds from median strips. While both watering and pruning can be accomplished mechanically, the weeds inside the median strips, hindered by the presence of guardrail posts, can only be cleared manually, significantly complicating highway maintenance. Manual labor has three drawbacks: 1. a dangerous working environment; 2. high labor costs; and 3. slow efficiency. Therefore, there is an urgent need for median weed clearing equipment. Summary of the Invention

[0003] The purpose of the present invention is to provide a central median strip trimmer to solve the problems existing in the above-mentioned prior art and to make weed clearing low in cost and high in efficiency.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a trimmer for a central dividing strip, comprising a suspension frame for being fixedly connected to a sweeper, the end of the suspension frame is hinged with a first connecting rod, the end of the first connecting rod is fixedly provided with a connecting frame, the connecting frame is hinged with a second connecting rod, the end of the second connecting rod is hinged with a rotating frame, the rotating frame is fixedly connected with a hollow rotary oil cylinder, the flange at the bottom of the hollow rotary oil cylinder is fixedly connected with three extension parts, the end of the extension part is fixedly connected with a cutter disc, a rotating shaft is passed through the center position of the cutter disc, a cutting part is installed after the bottom of the rotating shaft passes through the cutter disc, a hydraulic motor is fixedly provided on the top of the hollow rotary oil cylinder, the rotating shaft of the hydraulic motor passes through the hollow rotary oil cylinder and is respectively connected to the top of the rotating shaft through three closed transmission belts; the hydraulic motor and the hollow rotary oil cylinder are respectively connected with a control system, and the control system is arranged on the sweeper.

[0006] Optionally, a first hydraulic cylinder is provided at the top of the first connecting rod, the end of the first hydraulic cylinder is hinged to the suspension frame, and the hydraulic rod of the first hydraulic cylinder is hinged to the top of the first connecting rod; the first connecting rod can be rotated up and down around the suspension frame through the first hydraulic cylinder.

[0007] Optionally, the connecting frame at the end of the first connecting rod is hinged with a second hydraulic cylinder, and the hydraulic rod of the second hydraulic cylinder is hinged to one side of the second connecting rod; the second connecting rod can rotate horizontally around the first connecting rod through the second hydraulic cylinder.

[0008] Optionally, a third hydraulic cylinder is hinged to the top of the second connecting rod, and the hydraulic rod of the third hydraulic cylinder is hinged to the rotating frame; the rotating frame can be rotated up and down around the end of the second connecting rod through the third hydraulic cylinder.

[0009] Optionally, a rotating wheel is fixedly connected above the rotating shaft, and the rotating shaft of the hydraulic motor is transmission-connected to the rotating wheel via a closed transmission belt.

[0010] Optionally, the cutting portion includes a blade box fixedly connected to the bottom of the rotating shaft, blade outlets are evenly opened on the side wall of the blade box, a blade is fixedly connected to the blade box through an elastic member, and the blade can be extended and retracted in the blade outlet.

[0011] Optionally, four blade outlets are evenly opened on the side wall of the blade box, and four blades corresponding to the blade outlets are installed in the blade box.

[0012] Compared with the prior art, the present invention has achieved the following technical effects:

[0013] The blades of the central median trimmer provided by the present invention can break up and throw out the weeds inside the pillars with the power support of a high-speed hydraulic motor. When the equipment hits a guardrail pillar, it will perform a 90° hydraulic turn, and will quickly return to its original position after avoiding the pillar, which is highly safe. A lifting device is designed between the equipment and the vehicle connection section, with a lifting stroke of up to 1.2 meters. The cutter disc is about 2.5 meters from the ground, and can flatten vegetation such as tall shrubs and cypresses in the central median and emergency parking lanes. Using a fan-blade blade, the blade studio will generate an upward suction force to break up the weeds that need to be trimmed, and at the same time generate wind to blow out the crushed garbage, thereby achieving the purpose of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic structural diagram of a trimmer for a central median strip according to the present invention;

[0016] Figure 2 Schematic top view of the cutter head of the central median strip trimmer of the present invention;

[0017] Figure 3 A schematic side view of a cutter head of a central median strip trimmer according to the present invention;

[0018] Among them, 1 is the suspension frame, 2 is the first connecting rod, 3 is the connecting frame, 4 is the second connecting rod, 5 is the rotating frame, 6 is the hollow rotary cylinder, 7 is the flange, 8 is the extension part, 9 is the cutter head, 10 is the rotating shaft, 11 is the hydraulic motor, 12 is the transmission belt, 13 is the first hydraulic cylinder, 14 is the second hydraulic cylinder, 15 is the third hydraulic cylinder, 16 is the rotating wheel, 17 is the blade box, and 18 is the blade. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide a central median strip trimmer to solve the problems existing in the above-mentioned prior art and to make weed clearing low in cost and high in efficiency.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The present invention provides a central dividing strip trimmer, such as Figure 1 、 Figure 2 and Figure 3 As shown, it includes a suspension frame 1 for being fixedly connected to the sweeper. The suspension frame 1 is matched with the sweeper and is based on the snow removal shovel suspension frame of the sweeper, so that the equipment is suspended in front of the vehicle; the end of the suspension frame 1 is hinged with a first connecting rod 2, the end of the first connecting rod 2 is fixedly provided with a connecting frame 3, the connecting frame 3 is hinged with a second connecting rod 4, the end of the second connecting rod 4 is hinged with a rotating frame 5, the rotating frame 5 is fixedly connected to a hollow rotary cylinder 6, and the flange 7 at the bottom of the hollow rotary cylinder 6 is fixedly connected to three extensions 8, and the flange 7 can rotate with the hollow rotary cylinder 6; the end of the extension 8 is fixedly connected to a cutter disc 9, and a rotating shaft 10 is passed through the center of the cutter disc, and the bottom of the rotating shaft 10 passes through the back of the cutter disc A cutting part is installed, and a hydraulic motor 11 is fixedly arranged on the top of the hollow rotary cylinder 6. The rotating shaft of the hydraulic motor 11 passes through the hollow rotary cylinder 6 and is respectively connected to the upper part of the rotating shaft 10 through three closed transmission belts 12; the hydraulic motor 11 and the hollow rotary cylinder 6 are respectively connected to a control system, which is arranged on the sweeper; the cutter disc 9 includes two circular cutter discs and one elliptical cutter disc, and the elliptical cutter disc has two connecting holes, which makes it easy to adjust the position of the rotating shaft 10 and the blade box connected thereto. The length of the elliptical cutter disc becomes larger, and the gap between the columns can be more comprehensively sheared by adjusting the rotating shaft position.

[0023] Further preferably, a first hydraulic cylinder 13 is provided at the top of the first connecting rod 2, the end of the first hydraulic cylinder 13 is hinged to the suspension frame 1, and the hydraulic rod of the first hydraulic cylinder 13 is hinged to the top of the first connecting rod 2; the first connecting rod 2 can rotate up and down around the suspension frame 1 via the first hydraulic cylinder 13. A second hydraulic cylinder 14 is hinged to the connecting frame 3 at the end of the first connecting rod 2, and the hydraulic rod of the second hydraulic cylinder 14 is hinged to one side of the second connecting rod 4; the second connecting rod 4 can rotate horizontally around the first connecting rod 2 via the second hydraulic cylinder 14. A third hydraulic cylinder 15 is hingedly connected to the top of the second connecting rod 4, and its hydraulic rod is hingedly connected to the turret 5. The turret 5 is able to rotate up and down around the end of the second connecting rod 4 via the third hydraulic cylinder 15. The present invention utilizes a hydraulic system based on the vehicle's power source, and a hydraulic control valve block and control system are installed to achieve the lifting and lowering of the present invention's equipment and the rotation of the weed-crushing blades. By controlling the extension and retraction of the first, second, and third hydraulic cylinders 13, 14, and 15, the first, second, and turret 5 are driven to rotate, thereby adjusting the position and angle of the cutting section, thereby expanding the cutting range. A rotating wheel 16 is fixedly connected to the top of the rotating shaft 10. The rotating shaft of the hydraulic motor 11 is connected to the rotating wheel 16 via a closed transmission belt 12.

[0024] The cutting part includes a blade box 17 fixedly connected to the bottom of the rotating shaft 10, and blade outlets are evenly opened on the side walls of the blade box 17. A blade 18 is fixedly connected to the blade box 17 through an elastic member. The blade 18 can be retracted in the blade outlet. The blade 18 needs to be fixed in a folding and retractable manner and is designed as four symmetrical blades. The blade 18 is usually fixedly connected to the center position of the blade box 17 through an elastic member. When the equipment is working, the rotating shaft of the hydraulic motor 11 drives the rotating shaft 10 on the cutter disc 6 to rotate through the transmission belt 12. The blade box 17 fixedly connected to the bottom of the rotating shaft 10 rotates rapidly with the rotating shaft 10, and uses centrifugal force to throw the blade 18 out of the blade box 17. When encountering hard objects, the blade can be folded back to reduce damage to the blade. Four blade outlets are evenly arranged on the side wall of the blade box 17, and four blades 18 corresponding to the blade outlets are installed in the blade box 17. After the blade 18 extends out of the blade box 17 under the action of centrifugal force, the diameter of the virtual circle formed by the ends of the four blades 18 is smaller than the diameter of the cutter disc 9, so that the cutter disc 9 can play a certain protective role for the blade 18, preventing the blade 18 from hitting the column and being damaged. When the blade box 17 stops rotating, the blade 18 shrinks and resets under the elastic force of the elastic member and returns to the blade box 17. The elastic member can be a spring.

[0025] The present invention's device is equipped with a hydraulic cylinder, a hydraulic motor 11, and a hollow rotary cylinder 6. It utilizes the vehicle's control system and hydraulic oil return to raise and lower its blades 18. Powered by the high-speed hydraulic motor, the blades break up and eject weeds from the columns. Because the central median is equipped with crash barriers and guardrail posts, when the cutterhead 9 approaches a guardrail post, the vehicle's driving force rotates the cutterhead 9 around the post, performing a hydraulic 90-degree turn to avoid obstacles. Once clear of the post, the hollow rotary cylinder 6 quickly returns to its original position. The blades 18, mounted at the bottom of the cutterhead 9, are fan-shaped. When the device is in operation, the high-speed rotation of the blades 18 generates upward wind force, stretching and breaking up weeds. The wind then ejects the broken weeds. Simultaneously, the sweeper sweeps the weeds and collects them in a trash bin. Three circular cutterheads are designed to rest on the ground, and the ground-facing portion is sealed with silicone strips to prevent the release of broken trash and gravel, which could cause accidents. The cutter head is designed with an adjustable discharge port, which can blow the broken garbage to the vertical sweeping brush position of the sweeper for cleaning.

[0026] The equipment of the present invention can reach a height of 2.2 meters after lifting. The third hydraulic cylinder can drive the rotating frame to rotate up and down, so that the cutter disc rotates at a right angle of 90 degrees to the ground. It can perform flat-top pruning and vertical pruning of green vegetation on both sides of the highway and the central dividing strip, further improving the green beauty of the highway.

[0027] The median trimmer of this invention has five main functions: grass chopping (crushing weeds), grass throwing (throwing away the crushed weeds), obstacle avoidance (crushing by avoiding guardrail posts), collision avoidance (tipping when encountering bumps or slopes to prevent damage), and sweeping (sweeping away the thrown grass when used with a sweeper). It can achieve a cleaning speed of 8-10 kilometers per hour, saving labor and reducing labor risks.

[0028] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A central median strip trimmer, characterized by: The cam is fixedly provided with a first link, the end of the first link is fixedly provided with a connecting frame, the end of the second link is hingedly provided with a rotating frame, the rotating frame is fixedly connected to a hollow rotary oil cylinder, the flange at the bottom of the hollow rotary oil cylinder is fixedly connected to three extension parts, the end of the extension part is fixedly connected to the cutter disc. A rotating shaft is passed through the bottom of the rotating shaft and a cutting part is installed after the cutting part passes through the cutter disc; a hydraulic motor is fixedly provided on the top of the hollow rotary oil cylinder, and the rotating shaft of the hydraulic motor passes through the hollow rotary oil cylinder and is respectively connected to the upper part of the rotating shaft through three closed transmission belts; the hydraulic motor and the hollow rotary oil cylinder are respectively connected to a control system, and the control system is arranged on the sweeping vehicle; the cutting part includes a blade box fixedly connected to the bottom of the rotating shaft, and blade outlets are evenly opened on the side walls of the blade box The blade outlet is telescopic; the cutter disc includes two circular cutter discs and one elliptical cutter disc, and the elliptical cutter disc is provided with two connecting holes for facilitating adjustment of the position of the rotating shaft and the blade box connected thereto. The length of the elliptical cutter disc becomes larger, and by adjusting the position of the rotating shaft, the gap between the columns can be more comprehensively sheared; a first hydraulic cylinder is provided at the top of the first connecting rod, and the end of the first hydraulic cylinder is hinged to the suspension frame, and the hydraulic rod of the first hydraulic cylinder is hinged to the top of the first connecting rod; the first connecting rod can be rotated up and down around the suspension frame through the first hydraulic cylinder; the connecting frame at the end of the first connecting rod is hinged with a second hydraulic cylinder, and the hydraulic rod of the second hydraulic cylinder is hinged to one side of the second connecting rod; the second connecting rod can be rotated horizontally around the first connecting rod through the second hydraulic cylinder; a third hydraulic cylinder is hinged at the top of the second connecting rod, and the hydraulic rod of the third hydraulic cylinder is hinged to the rotating frame; the rotating frame can be rotated up and down around the end of the second connecting rod through the third hydraulic cylinder.

2. The central median strip trimmer according to claim 1, characterized in that: A rotating wheel is fixedly connected above the rotating shaft, and the rotating shaft of the hydraulic motor is transmission-connected to the rotating wheel via a closed transmission belt.

3. The central median strip trimmer according to claim 1, characterized in that: Four blade outlets are evenly arranged on the side wall of the blade box, and four blades corresponding to the blade outlets are installed in the blade box.

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