Handrail structure of mini-tiller

Abstract

The utility model discloses a mini-tiller handrail structure which comprises a machine body, a handrail frame arranged on the rear portion of the machine body, a connecting arm arranged on the rear portion of the machine body and extending towards the rear portion of the machine body, a sliding base installed on the connecting arm, the sliding base and the connecting arm are connected in a sliding fit mode and can slide in the length direction of the connecting arm, and the handrail frame is connected with the sliding base. A locking structure is arranged on the connecting arm and / or the sliding seat, and the sliding seat can be fixed on the connecting arm through the locking structure. The adjusting structure is simple, operation is convenient and fast, the user experience effect is better, the market competitive advantage is good, and application and popularization are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a handrail structure of a micro-tillage machine. Background Art

[0002] A micro-tillage machine is a small agricultural machine powered by a small diesel or gasoline engine. It is light, small, and simple in structure. It is widely used in dry land, paddy fields, orchards, etc. in plains, mountains, and hills. However, the armrests of current hand-held micro-tillage machines are mostly fixed structures and cannot be adjusted in length or height according to different users, which brings a lot of inconvenience to users and a poor experience.

[0003] Therefore, my country's patent CN209089369U discloses a new type of micro-tiller handrail, including a handle, a push handle is fixed on the front surface of the handle, a cross bar is connected to the inner side of the push handle, and a No. 2 telescopic rod is sleeved on the inner wall of the push handle, a hand brake is installed at the bottom end of the push handle, a No. 1 telescopic rod is sleeved on the inner wall of the cross bar, the front surface of the No. 1 telescopic rod is connected with a fixing hole, the upper surface of the No. 2 telescopic rod is provided with a connecting hole, and the front surface of the push handle is connected with a fixing block, and the front surface of the fixing block is connected with a connecting block. The utility model can change the distance between the two handles by setting a No. 1 telescopic rod and a No. 2 telescopic rod, and the No. 1 telescopic rod and the No. 2 telescopic rod cooperate with each other, which effectively solves the problem that the user cannot adjust the handrail according to the use habit, and by setting a connection cover, the connection cover protects the fixing bolts, which can effectively prevent the corrosion of the connecting bolts by rain and high temperature, and effectively prolong the service life of the device. However, the prior art adjusts the distance between the armrest handles and the overall length of the armrest by adjusting the two push handles and the cross bar of the armrest. During adjustment, three adjustment structures need to be adjusted simultaneously, which makes the operation complicated. In addition, the adjustment ratio relationship between the three adjustment structures is fixed, that is, for an armrest of a certain length, the distance between the handles is fixed, which is not convenient to use. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a micro-tillage machine handrail structure to solve the problems of the prior art adjustment structure being complicated to operate and inconvenient to use.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a micro-tiller handrail structure includes a body, an handrail frame is provided at the rear of the body, a connecting arm extending toward the rear of the body is provided at the rear of the body, a slide is installed on the connecting arm, the slide is slidably connected to the connecting arm and can slide along the length direction of the connecting arm, the handrail frame is connected to the slide; a locking structure is provided on the connecting arm and / or the slide, and the slide can be fixed on the connecting arm through the locking structure.

[0006] As an optimization, the locking structure includes a plurality of adjustment holes distributed along the length direction of the connecting arm, a connecting hole opened on the sliding seat that can be opposite to some of the adjustment holes, and a locking bolt passing through the relative connecting holes and the adjustment holes, and the sliding seat can be fixed to the connecting arm by the locking bolt.

[0007] As an optimization, the connecting arm includes a connecting section connected to the body and a straight section for installing a slide seat. The straight section and the connecting section are integrally formed and connected smoothly along an arc, so that the connecting arm is L-shaped as a whole, and the straight section extends toward the upper rear of the body, so that the straight section has an angle with the horizontal plane.

[0008] As an optimization, the cross-section of the connecting arm is rectangular, the sliding seat is in an inverted U-shape, and is buckled on the connecting arm from top to bottom, the inner wall of the sliding seat is in contact with the outer surface of the connecting arm and is slidably connected, the adjustment holes are distributed on the left and right sides of the connecting arm, and correspondingly, the connecting holes are opened on the two support arms of the sliding seat.

[0009] As an optimization, the front end of the armrest frame is rotatably connected to the slide seat, so that the armrest frame can rotate up and down in a vertical plane, and the armrest frame can be fixed at a preset angle through a limiting structure.

[0010] As an optimization, the limiting structure includes a first toothed disc fixed on the slide, and a second toothed disc correspondingly arranged on the handrail frame, the second toothed disc is movably connected to the handrail frame so that it can move in a direction close to or away from the first toothed disc, and can enable the first toothed disc and the second toothed disc to engage or disengage, and when the first toothed disc and the second toothed disc are engaged, the handrail frame is fixed at a preset angle.

[0011] As an optimization, the connecting arm is rotatably connected to the body so that it can rotate up and down in a vertical plane. A base is correspondingly provided at the rear of the body, and a shock absorbing device is installed between the base and the connecting arm so that the vibration amplitude of the connecting arm under vibration is smaller than a preset vibration amplitude.

[0012] As an optimization, the shock absorbing device includes a shock absorbing spring installed between the base and the connecting arm, and the shock absorbing spring is a coil spring, and two ends of the spring are fixedly connected to the base and the connecting arm respectively.

[0013] As an optimization, the shock absorbing device also includes a guide rod passed through the shock absorbing spring. Correspondingly, a sliding hole is opened on the base. One end of the guide rod is fixedly connected to the connecting arm, and the other end passes through the sliding hole and is slidably connected to the sliding hole.

[0014] As an optimization, an adjusting nut is threadedly mounted on one end of the guide rod passing through the sliding hole.

[0015] Compared with the prior art, the utility model has the following advantages: a connecting arm is provided at the rear of the micro-tiller body, and a slide is installed on the connecting arm, and the armrest frame is installed as a whole on the slide, so that the overall length of the armrest frame can be conveniently adjusted by sliding the slide along the connecting arm, and when the required length is adjusted, the position of the slide can be quickly locked by the locking structure, the structure is simpler, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is an isometric structural schematic diagram of the utility model;

[0018] In the figure: 1 body, 2 handrail frame, 3 connecting arm, 4 slide seat, 5 adjustment hole, 6 locking bolt, 7 first gear plate, 8 second gear plate, 9 base, 10 shock absorbing spring, 11 guide rod, 12 adjustment nut. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example: See Figure 1-Figure 2 A micro-tiller handrail structure includes a body 1, an handrail frame 2 is provided at the rear of the body 1, a connecting arm 3 extending toward the rear of the body 1 is provided at the rear of the body 1, a slide seat 4 is installed on the connecting arm 3, the slide seat 4 is slidably connected to the connecting arm 3 and can slide along the length direction of the connecting arm 3, the handrail frame 2 is connected to the slide seat 4; a locking structure is provided on the connecting arm 3 and / or the slide seat 4, and the slide seat 4 can be fixed on the connecting arm 3 through the locking structure.

[0023] By setting a connecting arm 3 at the rear part of the micro-tiller body 1, and installing a slide 4 on the connecting arm 3, the handrail frame 2 is installed as a whole on the slide 4, so that the overall length of the handrail frame 2 can be conveniently adjusted by sliding the slide 4 along the connecting arm 3, and when adjusted to the required length, the position of the slide 4 can be quickly locked by the locking structure, the structure is simpler and the operation is more convenient.

[0024] Specifically, the locking structure can be configured according to different structural forms of the connecting arm 3 and the slide 4. For example, for the sleeve structure, a pin shaft or a spring pin can be used for locking, or a bolt compression method or other locking methods can be used. In this embodiment, the locking structure includes a plurality of adjustment holes 5 distributed along the length direction of the connecting arm 3, and a connecting hole opened on the slide 4 that can correspond to some of the adjustment holes 5, and a locking bolt 6 inserted into the corresponding connecting hole and the adjustment hole 5. The slide 4 can be fixed on the connecting arm 3 by the locking bolt 6. When the length of the handrail 2 needs to be adjusted, the locking bolt 6 is removed, and the handrail 2 is pulled or pushed to move the slide 4 to the specified position, so that the connecting hole on the slide 4 corresponds to the adjustment hole 5 on the connecting arm 3 at the corresponding position, and then the locking bolt 6 is installed to fix the slide 4 to the connecting arm 3, and the length adjustment of the handrail 2 is completed.

[0025] Furthermore, in order to be able to adjust the height of the armrest 2 during the process of adjusting the length of the armrest 2, in the present embodiment, the connecting arm 3 includes a connecting section connected to the machine body 1 and a straight section for installing the slide 4, and the straight section and the connecting section are integrally formed and smoothly connected along an arc, so that the connecting arm 3 is L-shaped as a whole, and the straight section extends toward the upper rear of the machine body 1, so that the straight section has an angle with the horizontal plane, so that the length and height of the armrest 2 can be adjusted according to different factors such as the height of the user.

[0026] In order to further simplify the structure and reduce the overall weight, the connecting arm 3 adopts a rectangular steel pipe structure with a rectangular cross section. The slide seat 4 is in an inverted U shape and is buckled on the connecting arm 3 from top to bottom. The inner wall of the slide seat 4 is in contact with the outer surface of the connecting arm 3 and is connected by sliding fit. The adjustment holes 5 are distributed on the left and right sides of the connecting arm 3. Correspondingly, the connection holes are opened on the two arms of the slide seat 4. In this way, the adjustment holes 5 are distributed on the left and right sides of the connecting arm 3. The locking bolts 6 can pass through the two opposite adjustment holes 5 and be locked by nuts, which has a better fixing effect and is convenient for disassembly and assembly. In this embodiment, there are at least two connection holes to prevent the slide seat 4 from rotating and improve the stability of the fixation. In addition, the adjustment hole 5 can also adopt a strip hole and a circular hole in combination, that is, the strip holes on both sides of the connecting arm 3 are arranged alternately and staggered, and multiple circular holes are arranged between the strip holes on the same side, so that each strip hole corresponds to multiple circular holes. Correspondingly, the spacing of the connecting holes is set as two connecting holes are respectively penetrated into the strip holes on both sides, that is, one of the locking bolts 6 is inserted into the left strip hole and passed out from the right circular hole, and the other locking bolt 6 is inserted into the right strip hole and passed out from the left circular hole. In this way, when adjusting, you only need to remove the locking nut and move the locking bolt 6 a certain distance. You do not need to pull it out completely to achieve adjustment, which prevents the handrail 2 from losing restriction and falling after the locking bolt 6 is fully pulled out, thereby improving the safety of adjustment.

[0027] In order to further increase the flexibility of height adjustment and alleviate the problem that the height of the armrest 2 is fixed during the length adjustment period due to the fixed angle of the connecting arm 3, the front end of the armrest 2 is rotatably connected to the slide seat 4, so that the armrest 2 can rotate up and down in the vertical plane, and the armrest 2 can be fixed at a preset angle through a limiting structure. In this way, the height of the armrest 2 can be adjusted flexibly according to actual needs while adjusting the length of the armrest 2, which provides a better experience.

[0028] Specifically, the limiting structure can be in various forms, such as existing structures such as positioning pins and adjusting gears. In this embodiment, the limiting structure includes a first toothed disc 7 fixed on the slide 4, and a second toothed disc 8 correspondingly arranged on the handrail 2. The second toothed disc 8 is movably connected to the handrail 2 so that it can move in a direction close to or away from the first toothed disc 7, and the first toothed disc 7 and the second toothed disc 8 can be meshed or separated, and when the first toothed disc 7 and the second toothed disc 8 are meshed, the handrail 2 is fixed at a preset angle. When in use, the second toothed disc 8 rotates together with the handrail 2, and the second toothed disc 8 can be driven to separate from the first toothed disc 7 by pulling a handle or other mechanism, so that the second toothed disc 8 can rotate freely with the handrail 2, and then the second toothed disc 8 is reset to mesh with the first toothed disc 7 and maintain the meshing state with the first toothed disc 7 through a reset structure such as a reset spring to prevent it from naturally disengaging, thereby limiting the rotation of the second toothed disc 8, thereby limiting the handrail 2 to be fixed at a preset angle, and completing the height or angle adjustment.

[0029] Since the micro-tillage machine vibrates greatly during use, the vibration of the armrest 2 brings a bad experience to the user. Therefore, in this embodiment, the connecting arm 3 is rotatably connected to the body 1 so that it can rotate up and down in a vertical plane. A base 9 is correspondingly provided at the rear of the body 1, and a shock absorbing device is installed between the base 9 and the connecting arm 3 so that the vibration amplitude of the connecting arm 3 under vibration is less than the preset vibration amplitude. By providing the shock absorbing device, when the armrest 2 vibrates with the connecting arm 3, the shock absorbing device can play a certain buffering and shock absorbing role on the connecting arm 3, thereby reducing the vibration amplitude of the armrest 2 and improving the user experience.

[0030] Specifically, the shock absorbing device can be in various forms, such as hydraulic or pneumatic shock absorption, spring shock absorption, rubber pad shock absorption, etc. In this embodiment, the shock absorbing device includes a shock absorbing spring 10 installed between the base 9 and the connecting arm 3. The shock absorbing spring 10 is a coil spring, and its two ends are respectively fixedly connected to the base 9 and the connecting arm 3. The coil shock absorbing spring 10 has a simple structure, low cost, easy installation, and good shock absorption effect.

[0031] In order to prevent the shock absorbing spring 10 from lateral displacement or bending during compression, in this embodiment, the shock absorbing device further includes a guide rod 11 that penetrates the shock absorbing spring 10, and correspondingly, a sliding hole is provided on the base 9, one end of the guide rod 11 is fixedly connected to the connecting arm 3, and the other end passes through the sliding hole and is slidably connected to the sliding hole. In this way, the shock absorbing spring 10 can stably vibrate along the direction of the guide rod 11, preventing displacement or complete bending, and improving the stability of use.

[0032] Furthermore, in order to be able to adjust the preload force of the shock-absorbing spring 10 according to actual needs to obtain a good shock-absorbing effect, in this embodiment, an adjusting nut 12 is threadedly installed at one end of the guide rod 11 passing through the sliding hole. The preload force of the shock-absorbing spring 10 can be adjusted by adjusting the nut 12, thereby changing the initial "hardness" of the shock-absorbing spring 10, thereby adjusting the maximum vibration amplitude of the armrest frame 2 under vibration, thereby improving the flexibility of use.

[0033] In addition, in this embodiment, the base 9 is mounted on the body 1 by bolts, and the base 9 is a U-shaped plate structure, and a rotating shaft is rotatably mounted between the two supporting plates, and one end of the connecting arm 3 is connected to the rotating shaft so that it can rotate around the rotating shaft. In this way, the base 9, the handrail frame 2, the connecting arm 3 and the shock absorbing device form an integral assembled structure, which is more convenient and quick to disassemble and assemble, and has a higher degree of modularization and integration, thereby improving market competitiveness.

[0034] In summary, the utility model has a simple adjustment structure, is convenient and quick to operate, provides a better user experience, has good market competitive advantages, and is easy to promote and apply.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A micro-tillage machine handrail structure, comprising a machine body, and a handrail frame is provided at the rear of the machine body, characterized in that: A connecting arm extending toward the rear of the machine body is provided at the rear of the machine body, a sliding seat is installed on the connecting arm, the sliding seat is slidably connected to the connecting arm and can slide along the length direction of the connecting arm, and the handrail frame is connected to the sliding seat; a locking structure is provided on the connecting arm and / or the sliding seat, and the sliding seat can be fixed on the connecting arm through the locking structure.

2. The micro-tillage machine handrail structure according to claim 1, characterized in that: The locking structure includes a plurality of adjustment holes distributed along the length direction of the connecting arm, a connecting hole opened on the sliding seat and capable of being opposite to some of the adjustment holes, and a locking bolt passing through the opposite connecting holes and the adjustment holes, and the sliding seat can be fixed to the connecting arm by the locking bolt.

3. The micro-tillage machine handrail structure according to claim 2, characterized in that: The connecting arm includes a connecting section connected to the body and a straight section for installing a slide seat. The straight section and the connecting section are integrally formed and smoothly connected along an arc, so that the connecting arm is L-shaped as a whole, and the straight section extends toward the upper rear of the body, so that the straight section has an angle with the horizontal plane.

4. The micro-tillage machine handrail structure according to claim 3, characterized in that: The cross-section of the connecting arm is rectangular, the sliding seat is in an inverted U-shape, and is buckled on the connecting arm from top to bottom. The inner wall of the sliding seat is in contact with the outer surface of the connecting arm and is slidably connected. The adjustment holes are distributed on the left and right sides of the connecting arm, and correspondingly, the connecting holes are opened on the two support arms of the sliding seat.

5. The micro-tillage machine handrail structure according to claim 1, characterized in that: The front end of the handrail frame is rotatably connected to the slide seat, so that the handrail frame can rotate up and down in a vertical plane, and the handrail frame can be fixed at a preset angle through a limiting structure.

6. The handrail structure of a micro-tillage machine according to claim 5, characterized in that: The limiting structure includes a first toothed disc fixed on the slide seat, and a second toothed disc correspondingly arranged on the handrail frame. The second toothed disc is movably connected to the handrail frame so that it can move in a direction close to or away from the first toothed disc, and can enable the first toothed disc and the second toothed disc to engage or disengage, and when the first toothed disc and the second toothed disc are engaged, the handrail frame is fixed at a preset angle.

7. A micro-tillage machine handrail structure according to any one of claims 1 to 6, characterized in that: The connecting arm is rotatably connected to the body so that it can rotate up and down in a vertical plane. A base is correspondingly provided at the rear of the body, and a shock absorbing device is installed between the base and the connecting arm so that the vibration amplitude of the connecting arm under vibration is smaller than a preset vibration amplitude.

8. The micro-tillage machine handrail structure according to claim 7, characterized in that: The shock absorbing device comprises a shock absorbing spring installed between the base and the connecting arm. The shock absorbing spring is a coil spring, and two ends of the coil spring are respectively fixedly connected to the base and the connecting arm.

9. The handrail structure of a micro-tillage machine according to claim 8, characterized in that: The shock absorbing device also includes a guide rod inserted into the shock absorbing spring. Correspondingly, a sliding hole is opened on the base. One end of the guide rod is fixedly connected to the connecting arm, and the other end passes through the sliding hole and is slidably connected to the sliding hole.

10. The handrail structure of a micro-tillage machine according to claim 9, characterized in that: An adjusting nut is threadedly mounted on one end of the guide rod passing through the sliding hole.

Images