Internal pressure spring type damping vertical pipe assembly and mini-tiller

Abstract

The utility model discloses an internal pressure spring type shock absorption vertical pipe assembly and a mini-tiller, the internal pressure spring type shock absorption vertical pipe assembly comprises a base and a vertical pipe which is obliquely arranged relative to the base, and the lower end of the vertical pipe is rotatably connected to the base through a rotating shaft which is transversely arranged. A spiral spring is arranged between the base and the vertical pipe in a supporting mode, and the two ends of the spiral spring are connected to the base and the vertical pipe through supports respectively. The device has the advantages of being reasonable in structural design, capable of effectively relieving vibration influence, improving operation experience, beneficial to guaranteeing working efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-tillage machines, in particular to an internal pressure spring type shock-absorbing vertical pipe assembly and a micro-tillage machine. Background Art

[0002] A micro-tiller is a small agricultural machine widely used in plains, mountainous areas and hilly areas. The structure of the handle operating part of the existing micro-tiller is a labor-saving lever type, in which the handle, riser and gearbox are assembled in a prescribed manner and fastened by bolts. However, since the micro-tiller will generate large vibration force during operation, the vibration force will be directly transmitted to the operator's hand through the riser. After long-term use, the operator's arm will become numb, reducing work efficiency. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the utility model is: how to provide an internal compression spring type shock-absorbing standpipe assembly and a micro-tillage machine with a reasonable structural design, which can effectively alleviate the impact of vibration, improve the operating experience, and help ensure work efficiency

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An internal compression spring type shock-absorbing vertical pipe assembly comprises a base and a vertical pipe arranged obliquely relative to the base, wherein the lower end of the vertical pipe is rotatably connected to the base via a transversely arranged rotating shaft, and is characterized in that a coil spring is supportedly arranged between the base and the vertical pipe, and the two ends of the coil spring are respectively connected to the base and the vertical pipe via supports.

[0006] In the above structure, the vertical tube is rotatably connected to the base through a rotating shaft, and a coil spring is supported and connected between the two. When in use, the base is installed on the micro-tiller and the armrest is connected to the vertical tube. The vibration generated when the micro-tiller is working will be absorbed by the coil spring through axial expansion and contraction and flexion and bending, thereby alleviating the impact of the vibration, improving the operating experience, avoiding numbness of the operator's arm, and ensuring work efficiency.

[0007] Furthermore, the support is a support tube fixedly arranged on the base or the vertical pipe, and the two ends of the coil spring are respectively arranged in the two support tubes.

[0008] In this way, the connection of the coil spring can be made simpler, which is beneficial to improving the stability and reliability of the structure and is also convenient for assembly.

[0009] Furthermore, at least two coil springs are arranged to be nested with each other.

[0010] In this way, by using coil springs with different diameters, the elastic properties of a single coil spring can be improved and the shock absorption effect can be enhanced.

[0011] Furthermore, the base includes a bottom plate and a support plate fixedly mounted on the bottom plate, one end of the support plate has two hinge supports which are vertically arranged and opposite to each other, and the two hinge supports have first hinge holes which are coaxially arranged through-through; the riser has a hinge plate which is U-shaped bent toward the support plate, and the hinge plate has a second hinge hole which is coaxially arranged through-through, and the rotating shaft is a bolt which passes through the first hinge hole and the second hinge hole.

[0012] Furthermore, the lower end of the vertical pipe has a limiting portion which is spaced apart from the upper surface of the base, the limiting portion is arranged on both sides of the rotating shaft in a horizontal radial direction, and the minimum distance between the limiting portion and the rotating shaft is greater than the maximum distance between the rotating shaft and the base.

[0013] In this way, since the minimum distance between the limiting part and the rotating shaft is greater than the maximum distance between the rotating shaft and the base, when the vertical pipe rotates upward or downward, the limiting part on one side can abut against the base, thereby limiting the rotation range of the vertical pipe.

[0014] Furthermore, the lower end of the vertical pipe has a limiting plane arranged opposite to the upper surface of the base, and the limiting portion is two side edges of the limiting plane in the horizontal radial direction of the rotating shaft.

[0015] Furthermore, the base has a first limit plate arranged opposite to the side of the vertical pipe at a distance, and the first limit plate is located on the side of the vertical pipe away from the support; the first limit plate has a threaded hole set through it, and is installed with a limit bolt set toward the vertical pipe.

[0016] In this way, by adjusting the limit bolt to change the positional relationship between the end of the limit bolt and the riser, the downward rotation distance of the riser can be controlled, and the riser and the handrail installed on the riser can be limited to the lowest position.

[0017] Furthermore, the lower end of the vertical pipe has a second limit plate arranged opposite to the upper surface of the base, and the second limit plate is symmetrically arranged on both sides of the vertical pipe in the length direction of the rotating shaft; the second limit plate has a threaded hole set through it, and is installed with a limit bolt set toward the base.

[0018] In this way, by adjusting the limit bolt to change the positional relationship between the end portion and the base, the downward rotation distance of the riser can be controlled, and the riser and the handrail installed on the riser can be limited to the lowest position.

[0019] Furthermore, at least two limiting bolts are arranged at intervals along the length direction of the rotating shaft.

[0020] A micro-tillage machine is characterized by comprising an armrest and the internal compression spring type shock-absorbing standpipe assembly as described above, wherein the armrest is adjustably and rotatably connected to the standpipe of the internal compression spring type shock-absorbing standpipe assembly.

[0021] In summary, the utility model has the advantages of reasonable structural design, can effectively alleviate the impact of vibration, improve operating experience, and is conducive to ensuring work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the armrest assembly in this embodiment.

[0023] Figure 2 This is a schematic structural diagram of the riser assembly of Example 1.

[0024] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective.

[0025] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure.

[0026] Figure 5 This is a schematic diagram of the structure of Example 2. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the embodiments.

[0028] Example 1: Figure 1 to Figure 4 As shown, a handrail assembly of a micro-tillage machine includes a handrail frame 6 and an internal compression spring type shock-absorbing vertical pipe assembly, wherein the handrail frame 6 is adjustable and rotatably connected to the vertical pipe of the internal compression spring type shock-absorbing vertical pipe assembly. Figure 2 and Figure 3 As shown, the internal compression spring type shock-absorbing vertical pipe assembly includes a base 1 and a vertical pipe 2 arranged obliquely relative to the base 1. The lower end of the vertical pipe 2 is rotatably connected to the base 1 through a horizontally arranged rotating shaft 21. A coil spring 3 is supported and arranged between the base 1 and the vertical pipe 2. The two ends of the coil spring 3 are respectively connected to the base 1 and the vertical pipe 2 through a support 22. The support 22 is a support cylinder fixedly arranged on the base 1 or the vertical pipe 2. The two ends of the coil spring 3 are respectively arranged in the two support cylinders. In this embodiment, two coil springs 3 are arranged in a mutually nested manner. By using two coil springs with different diameters, the elastic properties of a single coil spring can be improved, and the shock-absorbing effect can be enhanced.

[0029] A shaft sleeve 24 is fixedly provided at one end of the riser 2, and the side surfaces of both ends of the shaft sleeve 24 have first positioning teeth evenly distributed along the circumferential direction. The handrail frame 6 includes two symmetrically arranged handrail arms, and the inner sides of one ends of the two handrail arms have second positioning teeth corresponding to the first positioning teeth, and the middle parts of the second positioning teeth have connecting holes coaxially through them; the two handrail arms are connected to the riser 2 by fastening bolts passing through the connecting holes and the shaft sleeve 24; the other end of the fastening bolt is connected to a fastening sleeve, and the fastening sleeve is connected to a reinforcement handle, and the end of the reinforcement handle is bent toward one side.

[0030] The lower end of the vertical tube 2 has a limiting portion 23 disposed opposite to the upper surface of the base 1 at a distance therefrom. The limiting portions 23 are disposed on both sides of the rotating shaft 21 in the horizontal radial direction, and the minimum distance between the limiting portion 23 and the rotating shaft 21 is greater than the maximum distance between the rotating shaft 21 and the base 1. In this embodiment, the lower end of the vertical tube 2 has a limiting plane disposed opposite to the upper surface of the base 1. The limiting portions 23 are two side edges of the limiting plane in the horizontal radial direction of the rotating shaft 21.

[0031] In order to be able to adjust the pitch angle of the riser according to usage requirements, the base 1 has a first limit plate 4 arranged opposite to the side of the riser 2 at an interval, and the first limit plate 4 is located on the side of the riser 2 away from the support 22; the first limit plate 4 has a threaded hole set through it, and is installed with a limit bolt set toward the riser 2; two limit bolts are arranged at intervals along the length direction of the rotating shaft 21.

[0032] The base 1 includes a bottom plate 11 and a support plate 12 fixedly mounted on the bottom plate 11, one end of the support plate 12 has two vertically arranged and mutually opposite hinge supports, and the two hinge supports have first hinge holes coaxially arranged through-through; the riser 2 has a hinge plate bent in a U shape toward the support plate 12, and the hinge plate has a second hinge hole coaxially arranged through-through, and the rotating shaft 21 is a bolt passing through the first hinge hole and the second hinge hole.

[0033] In this embodiment, the vertical tube is rotatably connected to the base through a rotating shaft, and a coil spring is supported and connected between the two. When in use, the base is installed on the micro-tiller and the armrest is connected to the vertical tube. The vibration generated when the micro-tiller is working will be absorbed by the coil spring through axial expansion and contraction and flexion and bending, thereby alleviating the impact of the vibration, improving the operating experience, avoiding numbness of the operator's arm, and ensuring work efficiency.

[0034] Embodiment 2: The main difference from Embodiment 1 is that the first limiting plate 4 in Embodiment 1 is replaced by a second limiting plate 5, as shown in FIG. Figure 5As shown, in this embodiment, the lower end of the vertical pipe 2 has a second limit plate 5 that is spaced apart from the upper surface of the base 1, and the second limit plate 5 is symmetrically arranged on both sides of the vertical pipe 2 in the length direction of the rotating shaft 21; the second limit plate 5 has a threaded hole that is through-set, and is installed with a limit bolt set toward the base 1.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An internal compression spring type shock-absorbing standpipe assembly, comprising a base (1) and a standpipe (2) arranged obliquely relative to the base (1), wherein the lower end of the standpipe (2) is rotatably connected to the base (1) via a transversely arranged rotating shaft (21), characterized in that: A coil spring (3) is provided between the base (1) and the vertical pipe (2) in a supporting manner, and two ends of the coil spring (3) are respectively connected to the base (1) and the vertical pipe (2) through supports (22).

2. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: The support (22) is a support tube fixedly arranged on the base (1) or the vertical pipe (2), and the two ends of the coil spring (3) are respectively arranged in the two support tubes.

3. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: At least two of the coil springs (3) are arranged to be nested with each other.

4. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: The base (1) comprises a bottom plate (11) and a support plate (12) fixedly mounted on the bottom plate (11), one end of the support plate (12) having two hinge supports arranged vertically and facing each other, the two hinge supports having first hinge holes arranged coaxially through-through; the riser (2) has a hinge plate bent in a U-shape toward the support plate (12), the hinge plate having a second hinge hole arranged coaxially through-through, and the rotating shaft (21) is a bolt passing through the first hinge hole and the second hinge hole.

5. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: The lower end of the vertical pipe (2) has a limiting portion (23) arranged opposite to the upper surface of the base (1) at a distance, the limiting portions (23) being arranged on both sides of the rotating shaft (21) in a horizontal radial direction, and the minimum distance between the limiting portion (23) and the rotating shaft (21) is greater than the maximum distance between the rotating shaft (21) and the base (1).

6. The internal compression spring type shock absorbing standpipe assembly according to claim 5, characterized in that: The lower end of the vertical pipe (2) has a limiting plane arranged opposite to the upper surface of the base (1), and the limiting portion (23) is two side edges of the limiting plane in the horizontal radial direction of the rotating shaft (21).

7. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: The base (1) has a first limit plate (4) arranged opposite to the side of the vertical pipe (2) at a distance therefrom, the first limit plate (4) being located on a side of the vertical pipe (2) away from the support (22); the first limit plate (4) has a threaded hole extending therethrough and is provided with a limit bolt arranged toward the vertical pipe (2).

8. The internal compression spring type shock absorbing standpipe assembly according to claim 1, characterized in that: The lower end of the vertical pipe (2) has a second limit plate (5) arranged opposite to the upper surface of the base (1) at a distance therefrom, and the second limit plate (5) is symmetrically arranged on both sides of the vertical pipe (2) in the length direction of the rotating shaft (21); the second limit plate (5) has a threaded hole extending therethrough and is provided with a limit bolt arranged toward the base (1).

9. The internal compression spring type shock absorbing standpipe assembly according to claim 7 or 8, characterized in that: At least two of the limiting bolts are arranged at intervals along the length direction of the rotating shaft (21).

10. A micro-tillage machine, characterized in that: It comprises a handrail frame (6) and an internal compression spring type shock absorbing standpipe assembly as claimed in any one of claims 1 to 9, wherein the handrail frame (6) is adjustably and rotatably connected to the standpipe of the internal compression spring type shock absorbing standpipe assembly.

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