Pull rod type flameout control mechanism and tractor

Abstract

The utility model relates to a pull rod type flameout control mechanism and a tractor, the pull rod type flameout control mechanism comprises a flameout long pull rod, a flameout short pull rod and a support, and the support is fixedly arranged; one end of the flameout long pull rod is connected with the connecting assembly, and the other end of the flameout long pull rod is used for being connected with a flameout rocker arm on an engine fuel injection pump. The flameout short pull rod is installed on the support, one end of the flameout short pull rod is rotationally connected with the connecting assembly, and the flameout short pull rod can move on the support to pull the flameout long pull rod through the connecting assembly. The engine flameout mechanism has the advantages of being simple in structure and reasonable in design, achieving flameout by pulling the engine flameout rocker arm through the structure, loosening the handle after the engine is flameout, achieving automatic reset through the reset spring on the flameout rocker arm on the fuel injection pump, and being capable of effectively improving the reliability of the flameout mechanism through circulating operation.

Description

Technical Field

[0001] The utility model relates to the technical field of flameout control of tractors, in particular to a pull-rod type flameout control mechanism and a tractor. Background Art

[0002] At present, in the overseas tractor market in economically underdeveloped regions such as Central Africa and South Asia, the emission requirements for tractors are relatively low. There are no emission requirements for export models to this region, and a large number of National II mechanical pump engines are still used, which has a great cost advantage. The flameout control mechanism is one of the more important mechanisms on the engine and tractor. Its reliability directly affects the user's use. Once it fails, it may even cause major accidents such as personal safety.

[0003] The specific structure of the flameout control mechanism in the prior art is as follows: the flameout pull wire of this structure is fixed to the instrument panel. When the flameout needs to be turned off, just pull the handle, and the flameout pull wire drives the flameout rocker arm on the engine mechanical fuel injection pump to complete the flameout and parking action. The pull wire core of this structure is generally a steel wire with a diameter of φ1.5. The wire core itself is relatively thin, and there are problems such as deformation and wear of the wire core after long-term use, which troubles users; especially when working in paddy fields, because mud and sewage easily enter between the wire core and the protective tube, causing the wire core to get stuck and rust, etc., which greatly reduces the reliability of the flameout pull wire. Utility Model Content

[0004] The utility model provides a pull-rod type flameout control mechanism and a tractor, aiming to solve the problems in the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A pull rod type flameout control mechanism comprises a long flameout pull rod, a short flameout pull rod and a bracket, wherein the bracket is fixedly arranged; a connecting assembly is installed on the bracket, one end of the long flameout pull rod is connected to the connecting assembly, and the other end is used to connect to the flameout rocker arm on the engine injection pump; the short flameout pull rod is installed on the bracket, one end of which is rotatably connected to the connecting assembly, and the short flameout pull rod can be moved on the bracket to pull the long flameout pull rod through the connecting assembly.

[0007] The beneficial effect of the utility model is that during the flameout operation, the flameout short pull rod is manually pulled to move the flameout short pull rod forward and backward on the bracket, and the flameout short pull rod drives the flameout long pull rod to pull the engine flameout rocker arm to realize flameout, and after the engine is turned off, the flameout short pull rod is released, and the flameout rocker arm on the fuel injection pump is automatically reset by the reset spring, and the cycle operation can be performed.

[0008] The utility model has a simple structure and a reasonable design. The engine flameout rocker arm is pulled by the structure to achieve flameout. After the engine is flameout, the handle is released and the flameout rocker arm is automatically reset by a reset spring on the fuel injection pump. The cycle operation can be repeated, and the reliability of the flameout mechanism can be effectively improved.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the bracket includes a rocker shaft mounting bracket and a tie rod bracket weld, the rocker shaft mounting bracket and the tie rod bracket weld are fixedly arranged respectively, and the rocker shaft mounting bracket is located next to the tie rod bracket weld; the connecting assembly is installed on the rocker shaft mounting bracket, and the flameout short tie rod is installed on the tie rod bracket weld.

[0011] The beneficial effect of adopting the above further solution is that the bracket adopts a split structure, which is convenient for assembling various components without affecting each other.

[0012] Further, the connecting assembly includes a rocker shaft weld and a rocker arm weld, the rocker shaft weld is rotatably mounted on the rocker shaft mounting bracket, one end of which is rotatably connected to one end of the long flameout pull rod; one end of the rocker arm weld is fixedly connected to the other end of the rocker shaft weld, and the other end is rotatably connected to one end of the short flameout pull rod.

[0013] The beneficial effect of adopting the above further scheme is that during the flameout operation, the above-mentioned flameout short pull rod is manually pulled to move the flameout short pull rod back and forth on the bracket. The flameout short pull rod utilizes the rocker arm shaft welding and the rocker arm welding to drive the flameout long pull rod to pull the engine flameout rocker arm to achieve flameout. After the engine is turned off, the flameout short pull rod is released and automatically reset by the reset spring of the flameout rocker arm on the fuel injection pump, and the cycle operation can be performed.

[0014] Furthermore, one end of the rocker arm welded is fixedly sleeved on the other end of the rocker arm shaft welded, and one end of the flameout short pull rod passes through the other end of the rocker arm welded, and is interspersed with an opening limit pin.

[0015] The beneficial effects of adopting the above further solution are simple structure, reasonable design, convenient assembly, time saving and labor saving.

[0016] Furthermore, the rocker arm shaft mounting bracket is provided with a penetrating mounting channel, the rocker arm shaft is welded and penetrates the mounting channel, and a nylon bushing is sleeved at a position corresponding to the mounting channel.

[0017] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and convenient welding and assembly of the rocker shaft; at the same time, the nylon bushing can play a shock-absorbing role, avoid collision between metal parts, and reduce noise.

[0018] Furthermore, an annular groove is provided in the rocker shaft welding portion corresponding to the nylon bushing and close to the other end of the rocker shaft welding portion, and an elastic retaining ring for the shaft is installed in the annular groove.

[0019] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and utilizing the shaft elastic retaining ring to limit the nylon bushing to avoid slipping.

[0020] Furthermore, a protrusion is provided at one welded end of the pull rod bracket, and the flameout short pull rod passes through the protrusion and is slidably connected to the protrusion.

[0021] The beneficial effect of adopting the above further solution is that the structure is simple, the protrusions on the tie rod bracket are reasonably arranged, and the short flameout tie rod is easily assembled.

[0022] Furthermore, the protruding portion is provided with a through hole for the flameout short pull rod to pass through, and a second nylon bushing is fixedly provided on the portion of the flameout short pull rod corresponding to the through hole.

[0023] The beneficial effects of adopting the above further solution are simple structure and reasonable design. The nylon bushing 2 plays a guiding and shock-absorbing role and avoids noise caused by collision of metal parts.

[0024] Furthermore, a flameout handle is fixedly connected to the other end of the flameout short pull rod, and a plurality of mounting bolts are installed on the other welded end of the pull rod bracket.

[0025] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, and convenient operation of the short flameout pull rod using the flameout handle, which is easy to operate and saves time and effort. In addition, the pull rod bracket is welded and fixed on the gantry using multiple mounting bolts, which is easy to assemble.

[0026] The utility model also relates to a tractor, comprising the pull-rod type flameout control mechanism as described above.

[0027] The beneficial effect of adopting the above further scheme is that the utility model also provides a tractor with a simple structure and reasonable design. The structure is used to pull the engine shutdown rocker arm to achieve shutdown. After the engine is shut down, the handle is released and the shutdown rocker arm on the fuel injection pump is automatically reset through the reset spring. The cycle operation can be repeated, which can effectively improve the reliability of the shutdown mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the overall structural diagrams of the utility model;

[0029] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0030] Figure 3 for Figure 2 Sectional view along AA direction;

[0031] Figure 4 This is the third schematic diagram of the overall structure of the utility model;

[0032] Figure 5 This is the fourth schematic diagram of the overall structure of the utility model;

[0033] Figure 6 It is a partial structural schematic diagram of the utility model;

[0034] Figure 7 It is a schematic diagram of the structure of the utility model during actual assembly.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Long pull rod for flameout; 2. Short pull rod for flameout; 3. Mounting bracket for rocker arm shaft; 4. Welding of pull rod bracket; 5. Welding of rocker arm shaft; 6. Welding of rocker arm; 7. Opening limit pin; 8. Nylon bushing 1; 9. Elastic retaining ring for shaft; 10. Nylon bushing 2; 11. Flameout handle; 12. Mounting bolts; 13. Opening pin; 14. Engine assembly; 15. Instrument panel assembly; 16. Welding of gantry. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] Example 1

[0042] like Figures 1 to 7 As shown, this embodiment provides a pull rod type flameout control mechanism, including a flameout long pull rod 1, a flameout short pull rod 2 and a bracket, wherein the bracket is fixedly arranged; a connecting assembly is installed on the bracket, one end of the flameout long pull rod 1 is connected to the connecting assembly, and the other end is used to connect to the flameout rocker arm on the engine injection pump; the flameout short pull rod 2 is installed on the bracket, one end of which is rotatably connected to the connecting assembly, and it can move on the bracket to pull the flameout long pull rod 1 through the connecting assembly.

[0043] During the flameout operation, the above-mentioned flameout short pull rod 2 is manually pulled to make the flameout short pull rod 2 move back and forth on the bracket. The flameout short pull rod 2 uses the connecting assembly to drive the flameout long pull rod 1 to pull the engine flameout rocker arm to achieve flameout. After the engine is turned off, the flameout short pull rod is released and it is automatically reset by the reset spring of the flameout rocker arm on the fuel injection pump. The cycle operation can be completed.

[0044] Preferably, in this embodiment, the flameout short pull rod 2 is preferably a cylindrical structure.

[0045] Preferably, in this embodiment, the other end of the long flameout pull rod 1 is connected to the flameout rocker arm on the engine fuel injection pump through a cotter pin 13. This part of the structure adopts the existing technology, and its specific structure and principle will not be repeated here.

[0046] This embodiment has a simple structure and a reasonable design. The structure is used to pull the engine shutdown rocker arm to achieve shutdown. After the engine is shut down, the handle is released and the shutdown rocker arm on the injection pump is automatically reset through the reset spring. The cycle operation can be repeated, which can effectively improve the reliability of the shutdown mechanism.

[0047] Example 2

[0048] On the basis of Example 1, in this embodiment, the bracket includes a rocker shaft mounting bracket 3 and a tie rod bracket weld 4, the rocker shaft mounting bracket 3 and the tie rod bracket weld 4 are fixedly arranged respectively, and the rocker shaft mounting bracket 3 is located next to the tie rod bracket weld 4; the connecting assembly is installed on the rocker shaft mounting bracket 3, and the flameout short tie rod 2 is installed on the tie rod bracket weld 4.

[0049] The bracket adopts a split structure, which is convenient for assembling various components without affecting each other.

[0050] Based on the above solution, the rocker shaft mounting bracket 3 and the tie rod bracket weld 4 are respectively mounted on the gantry.

[0051] Alternatively, the bracket may also be an integrated structure.

[0052] Example 3

[0053] On the basis of Example 2, in this embodiment, the connecting assembly includes a rocker shaft weld 5 and a rocker weld 6, the rocker shaft weld 5 is rotatably mounted on the rocker shaft mounting bracket 3, and one end of the rocker shaft weld 5 is rotatably connected to one end of the long flameout pull rod 1; one end of the rocker weld 6 is fixedly connected to the other end of the rocker shaft weld 5, and the other end is rotatably connected to one end of the short flameout pull rod 2.

[0054] During the flameout operation, the flameout short pull rod 2 is manually pulled to move back and forth on the bracket. The flameout short pull rod 2 drives the flameout long pull rod 1 to pull the engine flameout rocker arm to achieve flameout by utilizing the rocker arm shaft weld 5 and the rocker arm weld 6. After the engine is turned off, the flameout short pull rod 2 is released and automatically reset by the reset spring of the flameout rocker arm on the fuel injection pump. The cycle operation can be repeated.

[0055] Preferably, in this embodiment, the rocker arm shaft weld 5 adopts a cylindrical structure.

[0056] Preferably, in this embodiment, the rocker arm weld 6 adopts a flat plate structure, both ends of which are smooth arc-shaped structures, and one end is thick and the other end is thin.

[0057] Example 4

[0058] On the basis of Example 3, in this embodiment, one end of the rocker arm weld 6 is fixedly sleeved on the other end of the rocker arm shaft weld 5, and one end of the flameout short pull rod 2 passes through the other end of the rocker arm weld 6 and is interspersed with an open limit pin 7.

[0059] The solution has a simple structure, reasonable design, convenient assembly, and saves time and effort.

[0060] Preferably, in this embodiment, the opening limiting pin 7 is preferably a columnar structure.

[0061] Based on the above scheme, one end of the short flameout pull rod 2 is L-shaped, and a round hole is provided on the other end of the rocker shaft weld 5 for one end of the short flameout pull rod 2 to pass through, and a through socket is provided on one end of the short flameout pull rod 2, and an open limit pin 7 is inserted in the above socket, which is vertically distributed to one end of the short flameout pull rod 2.

[0062] Example 5

[0063] On the basis of any one of Examples 3 to 4, in this embodiment, the rocker shaft mounting bracket 3 is provided with a penetrating mounting channel, the rocker shaft weld 5 penetrates the mounting channel, and a nylon bushing 8 is sleeved on the portion corresponding to the mounting channel.

[0064] This solution has a simple structure and a reasonable design, and the rocker shaft welding 5 is easy to assemble; at the same time, the nylon bushing 8 can play a shock-absorbing role, avoid collision between metal parts, and reduce noise.

[0065] Example 6

[0066] On the basis of Example 5, in this embodiment, an annular groove is provided in the rocker shaft weld 5 corresponding to the nylon bushing 8 near the other end of the rocker shaft weld 5, and an elastic retaining ring 9 for the shaft is installed in the annular groove.

[0067] The scheme has a simple structure and a reasonable design, and uses a shaft elastic retaining ring 9 to limit the nylon bushing 8 to avoid slipping.

[0068] Preferably, in this embodiment, the size of one end of the nylon bushing 8 close to the shaft elastic retaining ring 9 is larger than the size of the other end thereof, and the larger end of the nylon bushing 8 abuts against the rocker shaft mounting bracket 3.

[0069] Example 7

[0070] On the basis of any one of Embodiments 2 to 6, in this embodiment, a protrusion is provided at one end of the tie rod bracket weld 4, and the flameout short tie rod 2 passes through the protrusion and is slidably connected to the protrusion.

[0071] This solution has a simple structure, and the raised portion on the tie rod bracket weld 4 is reasonably arranged, which facilitates the assembly of the flameout short tie rod 2.

[0072] Based on the above solution, the protrusion can be integrally formed with the tie rod bracket 4 by welding, or can be designed as a split part with the tie rod bracket 4 by welding.

[0073] Example 8

[0074] On the basis of Example 7, in this embodiment, the protruding portion is provided with a through hole for the flameout short pull rod 2 to pass through, and a nylon bushing 10 is fixedly provided at a portion of the flameout short pull rod 2 corresponding to the through hole.

[0075] The solution has a simple structure and a reasonable design. The nylon bushing 10 plays a guiding and shock-absorbing role and avoids noise caused by collision of metal parts.

[0076] Example 9

[0077] On the basis of any one of Embodiments 7 to 8, in this embodiment, a flameout handle 11 is fixedly connected to the other end of the flameout short pull rod 2, and a plurality of mounting bolts 12 are installed at the other end of the pull rod bracket weld 4.

[0078] The solution has a simple structure and a reasonable design. The flameout handle 11 is used to conveniently operate the flameout short pull rod 2, which is easy to operate and saves time and effort. In addition, the pull rod bracket weld 4 is fixedly installed on the gantry weld 16 using multiple mounting bolts 12, which is easy to assemble.

[0079] Preferably, in this embodiment, there are two mounting bolts 12, and the two mounting bolts 12 are arranged side by side.

[0080] Based on the above scheme, the assembly also includes an engine assembly 14 , a gantry weld 16 and an instrument panel assembly 15 . The gantry weld 16 is fixedly installed beside the engine assembly 14 , and the instrument panel assembly 15 is fixedly installed on the gantry weld 16 .

[0081] In addition, the tie rod bracket weld 4 is fixedly connected to the gantry weld 16 by using a plurality of mounting bolts 12 , and the arm shaft mounting bracket 3 is fixedly mounted on the gantry weld 16 .

[0082] Example 10

[0083] On the basis of the above embodiments, this embodiment also relates to a tractor, comprising the pull rod type flameout control mechanism as described above.

[0084] The present embodiment also provides a tractor with a simple structure and reasonable design. The structure is used to pull the engine shutdown rocker arm to achieve shutdown. After the engine is shut down, the handle is released and the shutdown rocker arm on the fuel injection pump is automatically reset through the reset spring. The cycle operation can be repeated, which can effectively improve the reliability of the shutdown mechanism.

[0085] The working principle of the utility model is as follows:

[0086] During the flameout operation, the flameout handle 11 is manually pulled to move the flameout handle 11 back and forth in the hole groove of the pull rod bracket weld 4. The flameout handle 11 pulls the rocker arm shaft weld 5 and the rocker arm weld 6 to rotate around the center of the shaft hole on the rocker arm shaft mounting bracket 3, and drives the flameout long pull rod 1 to pull the engine flameout rocker arm to achieve flameout. After the engine is turned off, the flameout handle 11 is released and automatically reset by the reset spring of the flameout rocker arm on the fuel injection pump, and the cycle operation is completed.

[0087] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0089] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pull rod type flameout control mechanism, characterized in that: The invention comprises a long flameout pull rod (1), a short flameout pull rod (2) and a bracket, wherein the bracket is fixedly arranged; a connecting assembly is installed on the bracket, one end of the long flameout pull rod (1) is connected to the connecting assembly, and the other end is used to connect to a flameout rocker arm on an engine fuel injection pump; the short flameout pull rod (2) is installed on the bracket, one end of which is rotatably connected to the connecting assembly, and the short flameout pull rod (2) can be moved on the bracket to pull the long flameout pull rod (1) through the connecting assembly.

2. The pull rod type flameout control mechanism according to claim 1, characterized in that: The bracket comprises a rocker shaft mounting bracket (3) and a tie rod bracket weld (4), wherein the rocker shaft mounting bracket (3) and the tie rod bracket weld (4) are respectively fixedly arranged, and the rocker shaft mounting bracket (3) is located beside the tie rod bracket weld (4); the connecting assembly is mounted on the rocker shaft mounting bracket (3), and the flameout short tie rod (2) is mounted on the tie rod bracket weld (4).

3. The pull rod type flameout control mechanism according to claim 2, characterized in that: The connecting assembly comprises a rocker shaft weld (5) and a rocker weld (6); the rocker shaft weld (5) is rotatably mounted on the rocker shaft mounting bracket (3), and one end of the rocker shaft weld (5) is rotatably connected to one end of the long flameout pull rod (1); one end of the rocker weld (6) is fixedly connected to the other end of the rocker shaft weld (5), and the other end is rotatably connected to one end of the short flameout pull rod (2).

4. The pull rod type flameout control mechanism according to claim 3, characterized in that: One end of the rocker arm weld (6) is fixedly sleeved on the other end of the rocker arm shaft weld (5), and one end of the flameout short pull rod (2) passes through the other end of the rocker arm weld (6) and is interspersed with an opening limit pin (7).

5. The pull rod type flameout control mechanism according to claim 3, characterized in that: The rocker shaft mounting bracket (3) is provided with a penetrating mounting channel, the rocker shaft weld (5) penetrates the mounting channel, and a nylon bushing (8) is sleeved on the portion corresponding to the mounting channel.

6. The pull rod type flameout control mechanism according to claim 5, characterized in that: The rocker shaft weld (5) is provided with an annular groove at a position corresponding to the nylon bushing (8) and close to the other end of the rocker shaft weld (5), and an elastic retaining ring (9) for the shaft is installed in the annular groove.

7. The pull rod type flameout control mechanism according to any one of claims 2 to 6, characterized in that: A protrusion is provided at one end of the pull rod support weld (4), and the flameout short pull rod (2) passes through the protrusion and is slidably connected to the protrusion.

8. The pull rod type flameout control mechanism according to claim 7, characterized in that: The raised portion is provided with a through hole for the flameout short pull rod (2) to pass through, and a second nylon bushing (10) is fixedly sleeved on a portion of the flameout short pull rod (2) corresponding to the through hole.

9. The pull rod type flameout control mechanism according to claim 7, characterized in that: The other end of the short flameout pull rod (2) is fixedly connected to a flameout handle (11), and the other end of the pull rod bracket welded (4) is installed with a plurality of mounting bolts (12).

10. A tractor, characterized in that: It comprises a pull rod type flameout control mechanism as described in any one of claims 1 to 9.

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