Hydraulic steering mechanism and mower thereof

Abstract

The utility model provides a hydraulic steering mechanism of a mower, and belongs to the technical field of machinery. The problem of poor stability in the prior art is solved. The hydraulic steering mechanism of the mower comprises a driving part, a first pump body, a second pump body, a third pump body, a fourth pump body, a first operating rod assembly and a second operating rod assembly, the driving part is fixedly connected to a frame, the first pump body and the second pump body are both fixedly connected to the frame and are both adjacent to the driving part, the third pump body and the fourth pump body are fixedly connected to the two sides of the frame respectively, and the first operating rod assembly and the second operating rod assembly are fixedly connected to the frame. Hydraulic oil circularly flows between the first pump body and the third pump body through a hydraulic pipeline between the first pump body and the third pump body, hydraulic oil circularly flows between the second pump body and the fourth pump body through a hydraulic pipeline between the second pump body and the fourth pump body, and a first rotating shaft capable of rotating is axially fixed in the third pump body. The hydraulic steering mechanism of the mower is high in stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a hydraulic steering mechanism. Background Art

[0002] A lawn mower is a mechanical device used to mow the lawn. It usually consists of a rotating blade or blades, driven by a mechanical or electrical power source, to cut and trim the grass on the lawn.

[0003] The direction of travel of the lawn mower needs to be adjusted by the user. Existing lawn mowers usually rely entirely on the user to apply external force to force the lawn mower to turn. This steering method makes the lawn mower more laborious to use. Utility Model Content

[0004] The purpose of the utility model is to provide a hydraulic steering mechanism which is easy to operate and compact in structure in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A hydraulic steering mechanism, a lawn mower comprises a frame and a wheel connected to the lower part of the frame, characterized in that the hydraulic steering mechanism comprises a driving member, a pump body 1, a pump body 2, a pump body 3, a pump body 4, an operating rod assembly 1 and an operating rod assembly 2, the driving member is fixedly connected to the frame, the pump body 1 and the pump body 2 are both fixedly connected to the frame and both are adjacent to the driving member, the pump body 3 and the pump body 4 are respectively fixedly connected to the two sides of the frame, the hydraulic oil circulates between the pump body 1 and the pump body 3 through a hydraulic pipeline, the hydraulic oil circulates between the pump body 2 and the pump body 4 through a hydraulic pipeline, a rotatable shaft 1 is axially fixed in the pump body 3, one of the wheels is fixedly connected to the rotating shaft 1, a rotatable shaft 2 is axially fixed in the pump body 4, and another wheel is fixedly connected to the rotating shaft 2, the operating rod assembly 1 can control the flow of hydraulic oil entering the pump body 3, and the operating rod assembly 2 can control the flow of hydraulic oil entering the pump body 4.

[0007] The hydraulic steering mechanism creatively turns the lawn mower left by operating the first operating lever assembly, and the second operating lever assembly is not operated during the process.

[0008] The lawn mower is turned right by operating the second operating lever assembly, and the first operating lever assembly is not operated during this process.

[0009] Specifically, the operation lever assembly 1 can reduce the flow of hydraulic oil entering the pump body 3 after it is actuated. At this time, the hydraulic oil in the pump body 4 maintains the normal flow. Since the flow in the pump body 3 is less than the flow in the pump body 4,

[0010] Pump body three and pump body four respectively drive the corresponding wheels to rotate, which causes the wheel speed at pump body three to slow down, thereby realizing the steering of the entire vehicle.

[0011] Similarly, when the flow rate in pump body four is less than the flow rate in pump body three, the whole vehicle turns in the opposite direction.

[0012] Of course, the driving member continuously drives the pump body 1 and the pump body 2 to move, ensuring that the hydraulic oil continues to flow in the pump body 3 and the pump body 4, and finally ensuring the stable movement of the entire lawn mower.

[0013] In the above-mentioned hydraulic steering mechanism, a rotatable paddle blade is axially fixedly connected to the pump body one, and the outer end of the paddle blade extends out of the pump body one and is connected to the driving member. The pump body one has an oil inlet port one and an oil return port one communicated with its inner cavity. The pump body three has a paddle blade two, and the paddle blade two is fixedly connected to the inner end of the rotating shaft one. The pump body three has an oil inlet port two and an oil return port two communicated with its inner cavity. The oil inlet port one is connected to the oil inlet port two through a pipe body one, and the oil return port one is connected to the oil return port two through a pipe body two.

[0014] During the continuous rotation of blade 1, the hydraulic oil in pump body 1 can stably enter pump body 3 through pipe body 1. Of course, the hydraulic pressure in pump body 3 can flow back to pump body 1 through pipe body 2, thereby ensuring that the hydraulic oil circulates in pump body 1 and pump body 3.

[0015] In the above-mentioned hydraulic steering mechanism, a rotatable paddle three is axially fixedly connected to the pump body two, and the outer end of the paddle three extends out of the pump body two and is connected to the driving member. The pump body two has an oil inlet three and an oil return port three communicated with its inner cavity. The pump body four has a paddle four, and the paddle four is fixedly connected to the inner end of the rotating shaft two. The pump body four has an oil inlet four and an oil return port four communicated with its inner cavity. The oil inlet three is connected to the oil inlet four through the pipe body three, and the oil return port three is connected to the oil return port four through the pipe body four.

[0016] During the continuous rotation of blade 3, the hydraulic oil in pump body 2 can stably enter pump body 4 through pipe body 3. Of course, the hydraulic pressure in pump body 4 can flow back to pump body 2 through pipe body 4, thereby ensuring that the hydraulic oil circulates in pump body 2 and pump body 4.

[0017] In the above-mentioned hydraulic steering mechanism, the operating rod assembly 1 includes a pull rod 1, a connecting rod 1, a connecting rod 2 and a valve 1. The above-mentioned valve 1 is connected to an oil inlet of a pump body 1. The above-mentioned pull rod 1 is vertically arranged and the middle part of the pull rod 1 is hinged to one side of the frame. One end of the above-mentioned connecting rod 1 is hinged to a lower end of the pull rod, and the other end of the connecting rod 1 is connected to the valve 1. One end of the connecting rod 2 is hinged to the pull rod 1, and a damper 1 is provided between the other end of the connecting rod 2 and the frame. Under the action of the damper 1, the pull rod 1 can be kept in a vertical state.

[0018] In the initial state, the pull rod 1 is kept in a vertical state under the action of the damper 1. After the external force is applied to pull the pull rod 1, the valve 1 is driven to move through the connecting rod 1. Since the valve 1 is located at the oil inlet of the pump body 1, the opening of the oil inlet 1 becomes smaller, reducing the flow of hydraulic oil entering the pump body 3, and finally slowing down the rotation speed of the wheels at the pump body 3.

[0019] In the above-mentioned hydraulic steering mechanism, the operating rod assembly 2 includes a pull rod 2, a connecting rod 3, a connecting rod 4 and a valve 2. The above-mentioned valve 2 is connected to the oil inlet 3 of the pump body 2. The above-mentioned pull rod 2 is vertically arranged and the middle part of the pull rod 2 is hinged to the other side of the frame. One end of the above-mentioned connecting rod 3 is hinged to the lower end of the pull rod 2, and the other end of the connecting rod 3 is connected to the valve 2. One end of the connecting rod 4 is hinged to the pull rod 2, and a damper 2 is provided between the other end of the connecting rod 4 and the frame. Under the action of the damper 2, the pull rod 2 can be kept in a vertical state.

[0020] In the initial state, the pull rod 2 is kept in a vertical state under the action of the damper 2. After the external force is applied to pull the pull rod 2, the valve 2 is driven to move through the connecting rod 2. Since the valve 2 is located at the oil inlet 3 of the pump body 2, the opening of the oil inlet 3 becomes smaller, reducing the flow of hydraulic oil entering the four parts of the pump body, and finally slowing down the rotation speed of the wheels of the four parts of the pump body.

[0021] In the above-mentioned hydraulic steering mechanism, a seat is fixedly connected to the frame, and the above-mentioned pull rod 1 and pull rod 2 are respectively located at two sides of the seat.

[0022] The pull rod one is located at the left side of the seat, and the pull rod two is located at the right side of the seat. People sitting on the seat can easily pull the pull rod one or the pull rod two.

[0023] In the above-mentioned hydraulic steering mechanism, the pull rod 1 is provided with a handle 1 bent toward the seat direction.

[0024] The pull rod can be conveniently pulled by the handle.

[0025] In the above-mentioned hydraulic steering mechanism, the second pull rod is provided with a second handle which is bent toward the seat.

[0026] The pull rod 2 can be conveniently pulled by the handle 2.

[0027] In the above-mentioned hydraulic steering mechanism, the outer end of the paddle blade one is fixedly connected to the driven wheel one, the outer end of the paddle blade three is fixedly connected to the transmission wheel two, the above-mentioned driving component is an engine, the output end of the engine is fixedly connected to the driving wheel, and also includes a transmission belt, which is connected to the driving wheel, the driven wheel one and the driven wheel two.

[0028] When the driving member drives the driven wheel 1 and the driven wheel 2 to continuously rotate through the transmission belt, the hydraulic oil in the pump body 1 can circulate and the hydraulic oil in the pump body 2 can circulate.

[0029] In the above-mentioned hydraulic steering mechanism, the driving wheel is located at the upper part of the frame, and the above-mentioned driven wheel one and driven wheel two are connected to the frame at both sides of the lower part of the driving wheel.

[0030] Such a structure can enable the driving wheel to smoothly drive the driven wheel one and the driven wheel two to rotate.

[0031] Compared with the prior art, the hydraulic steering mechanism has a simple and compact structure because the steering and driving of the vehicle both adopt the hydraulic system between the pump body 1 and the pump body 3 and between the pump body 2 and the pump body 4.

[0032] During the actual steering process, only one pull rod one or two pull rods need to be pulled, which is easy to operate and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the front side of the hydraulic steering mechanism.

[0034] Figure 2 It is the hydraulic steering mechanism at the back of the hydraulic steering mechanism.

[0035] Figure 3 It is a structural schematic diagram of the driving part of the hydraulic steering mechanism.

[0036] Figure 4 It is a structural schematic diagram of the connection between pump body 1 and pump body 3 of the hydraulic steering mechanism.

[0037] Figure 5 It is a structural schematic diagram of the connection between the pump body 2 and the pump body 4 of the hydraulic steering mechanism.

[0038] In the figure, 1, frame; 2, wheel; 3, driving part; 4, pump body 1; 5, pump body 2; 6, pump body 3; 7, pump body 4; 8, rotating shaft 1; 9, rotating shaft 2; 10, paddle blade 1; 11, paddle blade 2; 12, tube body 1; 13, tube body 2; 14, paddle blade 3; 15, paddle blade 4; 16, tube body 3; 17, tube body 4; 18, pull rod 1; 18a, handle 1; 19, connecting rod 1; 20, connecting rod 2; 21, valve 1; 22, damper 1; 23, pull rod 2; 23a, handle 2; 24, connecting rod 3; 25, connecting rod 4; 26, valve 2; 27, seat; 28, driven wheel 1; 29, driven wheel 2; 30, driving wheel; 31, damper 2; 32, transmission belt; 33, universal wheel. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0042] like Figure 1 As shown, the lawn mower comprises a frame and wheels 2 connected to the lower part of the frame 1 .

[0043] like Figure 1 and Figure 2 and Figure 3 As shown, the hydraulic steering mechanism includes a driving member 3, a pump body 1 4, a pump body 2 5, a pump body 3 6, a pump body 4 7, an operating rod assembly 1 and an operating rod assembly 2. The driving member 3 is fixedly connected to the frame 1. The pump body 1 4 and the pump body 2 5 are both fixedly connected to the frame 1 and both are adjacent to the driving member 3. The pump body 3 6 and the pump body 4 7 are respectively fixedly connected to the two sides of the frame 1. The hydraulic oil circulates between the pump body 1 4 and the pump body 3 6 through a hydraulic pipeline. A hydraulic pipeline is used between the pump body 2 5 and the pump body 4 7 to allow the hydraulic oil to circulate between the pump body 2 5 and the pump body 4 7. A rotatable shaft 1 8 is axially fixed in the pump body 3 6, and one wheel 2 is fixedly connected to the shaft 1 8. A rotatable shaft 2 9 is axially fixed in the pump body 4 7, and the other wheel 2 is fixedly connected to the shaft 2 9. The operating lever assembly 1 can control the flow of hydraulic oil entering the pump body 3 6, and the operating lever assembly 2 can control the flow of hydraulic oil entering the pump body 4 7.

[0044] like Figure 4As shown, a rotatable paddle 10 is axially fixedly connected to the pump body 14, and the outer end of the paddle 10 extends out of the pump body 14 and is connected to the driving member 3. The pump body 14 has an oil inlet 1 and an oil return port 1 communicated with its inner cavity. The pump body 3 6 has a paddle 2 11, and the paddle 2 11 is fixedly connected to the inner end of the rotating shaft 1 8. The pump body 3 6 has an oil inlet 2 and an oil return port 2 communicated with its inner cavity. The oil inlet 1 is connected to the oil inlet 2 through a pipe body 12, and the oil return port 1 is connected to the oil return port 2 through a pipe body 2 13.

[0045] like Figure 5 As shown, a rotatable paddle three 14 is axially fixedly connected to the pump body two 5, and the outer end of the paddle three 14 extends out of the pump body two 5 and is connected to the driving member 3. The pump body two 5 has an oil inlet three and an oil return port three communicated with its inner cavity. The pump body four 7 has a paddle four 15, and the paddle four 15 is fixedly connected to the inner end of the rotating shaft two 9. The pump body four 15 has an oil inlet four and an oil return port four communicated with its inner cavity. The oil inlet three is connected to the oil inlet four through the pipe body three 14, and the oil return port three is connected to the oil return port four through the pipe body four 15.

[0046] The operating rod assembly 1 includes a pull rod 18, a connecting rod 19, a connecting rod 20 and a valve 21. The valve 21 is connected to an oil inlet of a pump body 4. The pull rod 18 is vertically arranged and the middle part of the pull rod 18 is hinged to one side of the frame 1. One end of the connecting rod 19 is hinged to the lower end of the pull rod 18, and the other end of the connecting rod 19 is connected to the valve 21. One end of the connecting rod 20 is hinged to the pull rod 18, and a damper 22 is provided between the other end of the connecting rod 23 and the frame 1. Under the action of the damper 22, the pull rod 18 can be kept in a vertical state.

[0047] The operating rod assembly 2 includes a pull rod 23, a connecting rod 3 24, a connecting rod 4 25 and a valve 26. The valve 26 is connected to the oil inlet 3 of the pump body 2 5. The pull rod 23 is vertically arranged and the middle part of the pull rod 23 is hinged to the other side of the frame 1. One end of the connecting rod 3 24 is hinged to the lower end of the pull rod 23, and the other end of the connecting rod 3 24 is connected to the valve 2 26. One end of the connecting rod 4 25 is hinged to the pull rod 23, and a damper 2 31 is provided between the other end of the connecting rod 4 25 and the frame 1. Under the action of the damper 2 31, the pull rod 23 can be kept in a vertical state.

[0048] A seat 27 is fixedly connected to the frame 1 , and the first pull rod 18 and the second pull rod 23 are respectively located at two sides of the seat 27 .

[0049] The pull rod 18 has a handle 18 a bent toward the seat 27 .

[0050] The pull rod 23 has a handle 23 a bent toward the seat 27 .

[0051] The outer end of the paddle blade 10 is fixedly connected to a driven wheel 1 28, and the outer end of the paddle blade 3 14 is fixedly connected to a transmission wheel 2 29. The driving member 3 is an engine, and the output end of the engine is fixedly connected to a driving wheel 30, and also includes a transmission belt 32. The transmission belt 32 is connected to the driving wheel 30, the driven wheel 1 28 and the driven wheel 2 29.

[0052] The driving wheel 30 is located at the upper part of the frame 1 , and the driven wheel 1 28 and the driven wheel 2 29 are connected to the frame 1 at both sides of the lower part of the driving wheel 30 .

[0053] The hydraulic steering mechanism creatively turns the lawn mower left by operating the first operating lever assembly, and the second operating lever assembly is not operated during the process.

[0054] The lawn mower is turned right by operating the second operating lever assembly, and the first operating lever assembly is not operated during this process.

[0055] Specifically, the operation lever assembly 1 can reduce the flow of hydraulic oil entering the pump body 3 after it is actuated. At this time, the hydraulic oil in the pump body 4 maintains the normal flow. Since the flow in the pump body 3 is less than the flow in the pump body 4,

[0056] Pump body three and pump body four respectively drive the corresponding wheels to rotate, which causes the wheel speed at pump body three to slow down, thereby realizing the steering of the entire vehicle.

[0057] Similarly, when the flow rate in pump body four is less than the flow rate in pump body three, the whole vehicle turns in the opposite direction.

[0058] Of course, the driving member continuously drives the pump body 1 and the pump body 2 to move, ensuring that the hydraulic oil continues to flow in the pump body 3 and the pump body 4, and finally ensuring the stable movement of the entire lawn mower.

[0059] The two wheels are located at the rear of the frame, and a universal wheel 33 is connected to the front of the frame. There are two universal wheels 33, and the two universal wheels are located at both sides of the front of the frame. When the speeds of the two rear wheels are not synchronized, steering can be achieved, and the two universal wheels are used to adapt to the steering action.

[0060] A lawn mower adopts the above hydraulic steering mechanism. Under the action of the hydraulic steering mechanism, the lawn mower can stably move in a set direction, effectively improving its applicability.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A hydraulic steering mechanism, a lawn mower comprising a frame and wheels connected to the lower portion of the frame, characterized in that: The hydraulic steering mechanism comprises a driving member, a pump body 1, a pump body 2, a pump body 3, a pump body 4, an operating rod assembly 1 and an operating rod assembly 2. The driving member is fixedly connected to a vehicle frame, the pump body 1 and the pump body 2 are both fixedly connected to the vehicle frame and are both adjacent to the driving member, the pump body 3 and the pump body 4 are respectively fixedly connected to both sides of the vehicle frame, a hydraulic pipeline is passed between the pump body 1 and the pump body 3 so that the hydraulic oil circulates between the pump body 1 and the pump body 3, a hydraulic pipeline is passed between the pump body 2 and the pump body 4 so that the hydraulic oil circulates between the pump body 2 and the pump body 4, a rotatable shaft 1 is axially fixed in the pump body 3, one of the wheels is fixedly connected to the rotating shaft 1, a rotatable shaft 2 is axially fixed in the pump body 4, and another wheel is fixedly connected to the rotating shaft 2, the operating rod assembly 1 can control the flow of hydraulic oil entering the pump body 3, and the operating rod assembly 2 can control the flow of hydraulic oil entering the pump body 4.

2. The hydraulic steering mechanism according to claim 1, characterized in that: A rotatable paddle is axially fixedly connected to the pump body one, and the outer end of the paddle extends out of the pump body one and is connected to the driving member. The pump body one has an oil inlet one and an oil return port one communicated with its inner cavity. The pump body three has a paddle two, and the paddle two is fixedly connected to the inner end of the rotating shaft one. The pump body three has an oil inlet two and an oil return port two communicated with its inner cavity. The oil inlet one is connected to the oil inlet two through a pipe body one, and the oil return port one is connected to the oil return port two through a pipe body two.

3. The hydraulic steering mechanism according to claim 2, characterized in that: A rotatable paddle three is axially fixedly connected to the pump body two, and the outer end of the paddle three extends out of the pump body two and is connected to the driving member. The pump body two is provided with an oil inlet three and an oil return port three communicated with its inner cavity. The pump body four is provided with a paddle four, and the paddle four is fixedly connected to the inner end of the rotating shaft two. The pump body four is provided with an oil inlet four and an oil return port four communicated with its inner cavity. The oil inlet three is connected to the oil inlet four through the pipe body three, and the oil return port three is connected to the oil return port four through the pipe body four.

4. The hydraulic steering mechanism according to claim 3, characterized in that: The operating rod assembly 1 includes a pull rod 1, a connecting rod 1, a connecting rod 2 and a valve 1. The valve 1 is connected to an oil inlet of a pump body 1. The pull rod 1 is vertically arranged and the middle part of the pull rod 1 is hinged to one side of the frame. One end of the connecting rod 1 is hinged to a lower end of the pull rod, and the other end of the connecting rod 1 is connected to the valve 1. One end of the connecting rod 2 is hinged to the pull rod 1, and a damper 1 is provided between the other end of the connecting rod 2 and the frame. Under the action of the damper 1, the pull rod 1 can be kept in a vertical state.

5. The hydraulic steering mechanism according to claim 4, characterized in that: The operating rod assembly 2 includes a pull rod 2, a connecting rod 3, a connecting rod 4 and a valve 2. The valve 2 is connected to the oil inlet 3 of the pump body 2. The pull rod 2 is vertically arranged and the middle part of the pull rod 2 is hinged to the other side of the frame. One end of the connecting rod 3 is hinged to the lower end of the pull rod 2, and the other end of the connecting rod 3 is connected to the valve 2. One end of the connecting rod 4 is hinged to the pull rod 2, and a damper 2 is provided between the other end of the connecting rod 4 and the frame. Under the action of the damper 2, the pull rod 2 can be kept in a vertical state.

6. The hydraulic steering mechanism according to claim 5, characterized in that: A seat is fixedly connected to the frame, and the first and second pull rods are respectively located at two sides of the seat.

7. The hydraulic steering mechanism according to claim 6, characterized in that: The pull rod 1 is provided with a handle 1 which is bent toward the seat direction.

8. The hydraulic steering mechanism according to claim 7, characterized in that: The pull rod 2 is provided with a handle 2 which is bent toward the seat.

9. The hydraulic steering mechanism according to claim 8, characterized in that: The outer end of the paddle blade 1 is fixedly connected to the driven wheel 1, and the outer end of the paddle blade 3 is fixedly connected to the transmission wheel 2. The above-mentioned driving component is an engine, and the output end of the engine is fixedly connected to the driving wheel, and also includes a transmission belt, which is connected to the driving wheel, the driven wheel 1 and the driven wheel 2.

10. The hydraulic steering mechanism according to claim 9, characterized in that: The driving wheel is located at the upper part of the frame, and the driven wheel one and the driven wheel two are connected to the frame at both sides of the lower part of the driving wheel.

11. A lawn mower, characterized in that: Including the hydraulic steering mechanism described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10.

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