Accelerator control mechanism
By using a side-bent tripod in the tractor throttle control structure and the method of designing an L-shaped rod in the middle of the rocker arm, the problems of excessive throttle control and inconvenient operation in the prior art are solved, and more stable and convenient throttle control is achieved.
Patent Information
- Application Number
- CN202421742899.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In the existing tractor throttle control structure, the stiffness of the pull cable sleeve fixture is insufficient, resulting in unstable operating stroke, and the angle of the hand throttle and foot throttle pull cable is not standard, which is inconvenient for production inspection, which easily increases the handling force and is inconvenient for use.
A side-bent tripod is used as the wire-tie fixing frame to improve the stiffness of the bracket. By designing an L-shaped rod in the middle of the rocker arm to stagger the installation space of the hand throttle and foot throttle pulling wires, the rocker travel point is optimized and the offset of the wire-tie fixing point is reduced.
It improves the stability and reliability of the handling stroke, reduces the handling force, increases the convenience of throttle operation, and the vertical arrangement of the tripod facilitates parts manufacturing and inspection.
Smart Images
Figure CN222782713U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tractors, in particular to a throttle operating mechanism. Background Art
[0002] The throttle control structure required for oiling the National II tractor mainly controls the engine throttle by operating the rocker arm to drive the flexible shaft cable, so that the engine can meet the throttle opening requirements under different working conditions. Figure 1 The throttle control mechanism of a certain existing national second tractor includes a foot throttle pedal assembly 1', a rocker arm 3', a cable sleeve fixing frame 4', a cable 5', a cable sleeve 6' and a rotating shaft bracket 7'. Figure 1 The cable sleeve 6' marked on the left is the foot throttle cable sleeve, and the unmarked one on the right is the hand throttle cable sleeve. The left and right forks of the rocker arm 3' are respectively connected to the foot throttle cable sleeve and the hand throttle cable sleeve. The cable 5' is passed through the cable sleeve 6'. The foot throttle cable on the left is connected to the engine throttle. The rotating shaft on the foot throttle pedal assembly 1' is connected to one end of the rocker arm 3'. By operating the foot throttle pedal assembly 1', the rocker arm 3' is driven to rotate, thereby driving the foot throttle cable to move to achieve the purpose of operating the engine throttle. The structure sets a hand throttle rocker arm between the rotating shaft bracket 7' and the rocker arm 3', and the rocker arm 3' can be driven to rotate by pulling the hand throttle cable.
[0003] The above structure has the following disadvantages: the rigidity of the cable sleeve fixing frame 4' is insufficient, and it is seriously deformed during use, which wastes the operating stroke; the foot throttle cable fixing frame and the hand throttle cable fixing frame are not standard in angle, which makes production inspection inconvenient, and the angle deviation easily increases the operating force, which is inconvenient to use. Since the throttle cable and the rocker arm 3' in this structure must be staggered in the installation plane, and due to the limitations of other structures, the travel of the rocker arm 3' is greatly offset from the fixed point, the two cables 5' interfere with each other at the left and right bifurcations of the rocker arm 3', which also increases the operating force and brings inconvenience to the operation of controlling the throttle. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the utility model is to provide a throttle operating mechanism to improve the technical problem that the existing tractor throttle operating structure causes excessive operating force, thereby causing inconvenience in throttle operation.
[0005] The utility model is realized by the following technical solutions:
[0006] A throttle control mechanism comprises a foot throttle pedal assembly, a rocker arm, a hand throttle cable, a foot throttle cable, a tripod and a pivot bracket, wherein the pivot bracket is horizontally fixed to the bottom of a floor, the pivot on the foot throttle pedal assembly is passed through the pivot bracket, and one end thereof is clamped to one end of the rocker arm, an L-shaped rod is connected to the middle part of the rocker arm, the other end of the rocker arm is connected to the foot throttle cable, one end of the L-shaped rod is connected to the hand throttle cable, the hand throttle cable and the foot throttle cable are respectively sleeved on a hand throttle cable sleeve and a foot throttle cable sleeve, the hand throttle cable sleeve and the foot throttle cable sleeve are both fixed on the tripod, and the tripod is vertically fixed to the bottom of the floor.
[0007] Preferably, after one end of the rotating shaft passes through the rotating shaft bracket and is clamped to one end of the rocker arm, a through hole is provided on the one end, and a fixing ring and an elastic pin are matched at the through hole.
[0008] Preferably, a corner plate is fixed on the side of the rocker arm and is located at the middle position where the L-shaped rod is connected to the rocker arm, and one plate surface of the corner plate is fixed on the L-shaped rod.
[0009] Preferably, a through hole is provided on one plate surface of the tripod for the corresponding hand throttle cable sleeve and foot throttle cable sleeve to pass through, and the hand throttle cable sleeve and foot throttle cable sleeve are provided with a thread and two nuts matched with the thread, and the two nuts are respectively located at both ends of the through hole.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The utility model adopts a tripod with a side-bent bend for the cable sleeve fixing frame to improve the rigidity of the bracket, so that the operating stroke is stable and reliable, and the tripod is vertically arranged, which is convenient for parts manufacturing and inspection; by improving the existing design of the rocker arm, the original bottom co-planar fork design is improved to be staggered with an L-shaped rod in the middle to ensure the installation space of the hand throttle cable and the foot throttle cable, and at the same time, the rocker arm stroke point is optimized to minimize the deviation of the cable fixing point in the entire stroke of the rocker arm, thereby ensuring smooth movement of the cable, reducing the operating force, and increasing the convenience of operating the throttle. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0013] Figure 1 It is a schematic diagram of the structure of the throttle control mechanism of an existing tractor;
[0014] Figure 2 It is a structural schematic diagram of the throttle control mechanism of the utility model;
[0015] Figure 3 for Figure 2 Center A view.
[0016] Among them, the foot throttle pedal assembly 1, the rotating shaft 101, the connecting rod 102, the floor 2, the rocker arm 3, the L-shaped rod 4, the hand throttle cable sleeve 5, the hand throttle cable 6, the foot throttle cable sleeve 7, the foot throttle cable 8, the tripod 9, the rotating shaft bracket 10, the fixing ring 11, the elastic pin 12, the corner plate 13, and the nut 14. DETAILED DESCRIPTION
[0017] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.
[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings. Figure 2-3 A throttle control mechanism is shown, including a foot throttle pedal assembly 1, a rocker arm 3, a hand throttle cable 6, a foot throttle cable 8, a tripod 9 and a rotating shaft bracket 10. The rotating shaft bracket 10 is horizontally fixed to the bottom of the floor 2. The foot throttle pedal assembly 1 includes a rotating shaft 101, a connecting rod 102 and a pedal. The rotating shaft 101 thereon is penetrated by the rotating shaft bracket 10, and its extended end is clamped to one end of the rocker arm 3. An L-shaped rod 4 is connected to the middle part of the rocker arm 3, and the other end of the rocker arm 3 is connected to the foot throttle cable 8. One end of the L-shaped rod 4 is connected to the hand throttle cable 6. The hand throttle cable 6 and the foot throttle cable 8 are respectively sleeved on the hand throttle cable sleeve 5 and the foot throttle cable sleeve 7. The hand throttle cable sleeve 5 and the foot throttle cable sleeve 7 are both fixed on the tripod, and the tripod 9 is vertically fixed to the bottom of the floor 2. The tripod 9 can improve the rigidity of the bracket. When the throttle cable is pulled for a long time, the cable sleeve can be firmly fixed on the bracket without shaking. The tripod is arranged vertically, perpendicular to the floor, which is convenient for parts manufacturing and inspection. An L-shaped rod 4 is designed in the middle of the rocker arm 3 to improve the interference defect caused by the original throttle cable being installed on the same plane, and at the same time, a positive effect of optimizing the rocker arm stroke is achieved. In this way, the throttle cable slides freely in the throttle cable sleeve, reducing the operating force and improving the convenience of operating the engine throttle.
[0019] It is worth mentioning that the function of the hand throttle cable 6 is that the operator will feel tired after a long time of constantly controlling the throttle by stepping on the foot. If he releases his foot, the engine will not be able to maintain the speed required for the current work. At this time, the hand throttle cable 6 is pulled, bent to a certain position and fixed. The hand throttle cable 6 drives the L-shaped rod 4 and the rocker arm 3 to rotate in turn, thereby prompting the foot throttle cable 8 to slide to a certain position and be fixed, so that the engine maintains the speed required for the work.
[0020] In order to avoid the influence of the axial sliding of the rotating shaft 101 on the rocker arm 3, as Figure 3 After one end of the rotating shaft 101 passes through the rotating shaft bracket 10 and is clamped to one end of the rocker arm 3, a through hole is provided on it, and a fixing ring 11 and an elastic pin 12 are provided at the through hole, so that the rotating shaft 101 and the rocker arm 3 are fixed on the rotating shaft bracket 10. The elastic pin 12 is mainly used to allow a small axial displacement of the rotating shaft 101 and the rocker arm 3, thereby reducing the wear of the connection.
[0021] The connection between the L-shaped rod 4 and the rocker arm 3 is reinforced. A corner plate 13 is fixed on the side of the rocker arm 3 and is located in the middle position where the L-shaped rod 4 is connected to the rocker arm 3. One plate surface of the corner plate 13 is fixed on the L-shaped rod 4.
[0022] In order to ensure a stable connection between the cable sleeve and the tripod, a through hole is provided on a plate surface of the tripod 9 for the corresponding hand throttle cable sleeve 5 and foot throttle cable sleeve 7 to pass through. The hand throttle cable sleeve 5 and the foot throttle cable sleeve 7 are provided with a section of thread and two nuts 14 matched with the thread. The two nuts 14 are respectively located at both ends of the through hole.
[0023] The working principle of this utility model:
[0024] like Figure 2 , step on the pedal, the connecting rod 102 drives the rotating shaft 101 to rotate on the rotating shaft bracket 10, the rocker arm 3 rotates, and the foot throttle cable 8 connected thereto slides in the foot throttle cable sleeve 7, thereby controlling the engine throttle; when the foot operation is abandoned, the hand throttle cable 6 is pulled, bent to a certain position and then fixed, the hand throttle cable 6 drives the L-shaped rod 4 and the rocker arm 3 to rotate in turn, and the foot throttle cable 8 is controlled to slide to a certain position and then fixed, so that the engine maintains the required speed for operation.
[0025] 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 should be included in the protection scope of the present invention.
Claims
1. A throttle control mechanism, characterized in that: The utility model comprises a foot accelerator pedal assembly (1), a rocker arm (3), a hand accelerator cable (6), a foot accelerator cable (8), a tripod (9) and a rotating shaft bracket (10), wherein the rotating shaft bracket (10) is horizontally fixed to the bottom of a floor (2), a rotating shaft (101) on the foot accelerator pedal assembly (1) is passed through the rotating shaft bracket (10), and one end thereof is protruded and clamped to one end of the rocker arm (3), and the middle part of the rocker arm (3) is connected to an L-shaped rod (4) The other end of the rocker arm (3) is connected to a foot throttle cable (8), one end of the L-shaped rod (4) is connected to a hand throttle cable (6), the hand throttle cable (6) and the foot throttle cable (8) are respectively sleeved on a hand throttle cable sleeve (5) and a foot throttle cable sleeve (7), the hand throttle cable sleeve (5) and the foot throttle cable sleeve (7) are both fixed on a tripod, and the tripod (9) is vertically fixed to the bottom of the floor (2).
2. The throttle control mechanism according to claim 1, characterized in that: After one end of the rotating shaft (101) passes through the rotating shaft bracket (10) and is clamped to one end of the rocker arm (3), a through hole is provided on the rotating shaft, and a fixing ring (11) and an elastic pin (12) are matched at the through hole.
3. The throttle operating mechanism according to claim 1, characterized in that: A corner plate (13) is fixed on the side of the rocker arm (3) and is located at the middle position where the L-shaped rod (4) is connected to the rocker arm (3), and one plate surface of the corner plate (13) is fixed on the L-shaped rod (4).
4. The throttle operating mechanism according to claim 3, characterized in that: A through hole is provided on a plate surface of the tripod (9) for the corresponding hand throttle cable sleeve (5) and foot throttle cable sleeve (7) to pass through. The hand throttle cable sleeve (5) and foot throttle cable sleeve (7) are provided with a thread and two nuts (14) arranged on the thread. The two nuts (14) are respectively located at two ends of the through hole.