A double-linkage inverting and reversing control device

Abstract

The present application relates to control mechanism technical field, especially to a kind of double connecting rod reverse order operating device;Including rack, rotary lever sleeve, flexible shaft, first operating component and second operating component;The first operating component and second operating component are identical in structure and symmetrically distributed in the two sides of rotary lever sleeve;The flexible shaft is connected to the rotary lever sleeve;By design 1, double handle control, increase the convenience of left and right seat operation;2, left and right handle are independent, can be selected according to need Single / dual handle, cooperate different connecting rod 2 length, can be adapted to a variety of engineering machinery installation, wide application range;3, using the limiting way of limiting groove and open hole cooperation limiting piece, mechanism movement has only trajectory in the process of operation, high reliability;4, double connecting rod reverse order operating device overall structure is simple, can be installed at multiple angles, increase the diversity of installation.

Description

Technical Field

[0001] This invention relates to the field of control mechanism technology, and in particular to a double-link forward and reverse control device. Background Technology

[0002] Most of the control controls in the driver's cab are single-sided operating handles.

[0003] Chinese Patent No. CN217386232U discloses a multi-purpose dual-side linkage walking control mechanism that can realize multiple functions of dual-side linkage control. By setting the spindles at the lower ends of the left and right handle assemblies respectively, and setting the rotating rocker arms on the outer side of the sleeve, the left and right sliding function of the two handle assemblies can be realized. By setting the shift fork on the outer side of the sleeve, the rotation of the two handle assemblies can drive the shift fork to rotate, thereby driving the cam to rotate, and the vehicle can move through the flexible shaft, which greatly improves the convenience of use.

[0004] However, in the above-mentioned patented solution, since the left and right handles are connected to the same spindle, the connecting fork is moved by the spindle to achieve synchronous left and right movements. Therefore, it can be seen that the above-mentioned patented solution cannot achieve independent control of the left and right handles. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a double-link forward and reverse control device, which achieves independent control of the left and right handles through structural improvement.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A double-link forward / reverse control device, characterized in that it includes a frame, a rotary lever sleeve, a flexible shaft, a first control component, and a second control component;

[0008] The first and second control components have the same structure and are symmetrically distributed on both sides of the rotary lever sleeve.

[0009] The flexible shaft is connected to the rotating lever sleeve;

[0010] The first control assembly includes a first linkage, a first sleeve welded component, and a first handle;

[0011] The second control assembly includes a second linkage, a second sleeve welded component, and a second handle;

[0012] The rotating lever sleeve includes a first connecting tube with an axial horizontal direction. The first connecting tube has first opening holes at both ends and a first through hole at its upper part. The rotating lever sleeve also includes a lifting and limiting mechanism, which includes a connecting seat, a core rod, a first limiting member, a limiting groove, and a first spring. The core rod is movably connected to the connecting seat, and its lower end passes through the first through hole and extends into the interior of the first connecting tube. The first limiting member is connected to one side of the core rod. The limiting groove is fixed relative to the frame and is located above the first connecting tube. The first spring is sleeved on the outside of the core rod. When the core rod is in a free state, under the elastic potential energy of the first spring, the first limiting member and the limiting groove are engaged in a limiting fit.

[0013] The first sleeve welding component is connected to the frame. The first sleeve welding component includes a second connecting pipe, a rotating support sleeve, a connecting rod and a first pivot part. One end of the second connecting pipe is coaxially abutted against one end of the first connecting pipe. One end of the second connecting pipe is provided with a second opening hole corresponding to the first opening hole.

[0014] The first connecting rod is movably inserted through the second connecting pipe and the first connecting pipe, and a second limiting member is provided in the middle of the first connecting rod; a ramp is provided at the upper part of the inner end of the first connecting rod, and a limiting shaft is provided at the outer end of the first connecting rod.

[0015] The rotating support sleeve is rotatably fitted onto the second connecting pipe, and the connecting rod is connected to the rotating support sleeve; the first pivot part is disposed on the connecting rod;

[0016] The first pivot portion is located below the second connecting pipe;

[0017] The lower part of the first handle is pivotally connected to the first pivot part, and the middle part of the first handle is provided with a strip groove, and the limiting shaft is slidably connected in the strip groove;

[0018] In the first state, the upper part of the first handle rotates inward, causing the first connecting rod to move axially inward. The ramp at the inner end of the first connecting rod contacts the lower end of the core rod, pushing the lower end of the core rod upward. The first limiting member disengages from the limiting groove, and the second limiting member engages with the first opening hole for limiting.

[0019] In the second state, the upper part of the first handle rotates outward, causing the first connecting rod to move axially outward. The ramp at the inner end of the first connecting rod disengages from the lower end of the core rod, and the core rod moves downward under the action of the first spring. The first limiting member engages with the limiting groove, and the second limiting member disengages from the first opening hole. The second limiting member engages with the second opening hole.

[0020] Furthermore, in the above-mentioned double-link forward and reverse control device structure, the frame is connected to a cover plate, the sleeve welding component is fixed to the cover plate by bolts, and the cover plate is provided with a first clearance hole at the position of the first handle and the second handle, respectively.

[0021] Furthermore, in the above-mentioned double-link forward and reverse control device structure, the first link is sleeved with a second spring, and the first link has a protrusion near its outer end, and the second spring is located between the protrusion and the outer end of the second connecting tube.

[0022] Furthermore, in the above-mentioned double-link forward and reverse control device structure, the opening of the first opening hole is chamfered, the opening of the second opening hole is chamfered, and the opening size of the first opening hole and the second opening hole are the same.

[0023] Furthermore, the above-mentioned double-link reversing control device structure also includes a connecting frame, which is fixedly connected to the cover plate, and the connecting frame is provided with a second clearance hole for avoiding the first connecting pipe.

[0024] Furthermore, in the above-mentioned double-link reversing and forwarding control device structure, the rotating lever is sleeved with a reversing and forwarding lever, one end of the flexible shaft is vertically connected to the reversing and forwarding lever, and the flexible shaft is movably connected to the connecting frame.

[0025] Furthermore, in the above-mentioned double-link forward and reverse control device structure, the connecting frame is fixedly connected to the cam frame, and the limiting groove is provided on the upper part of the cam frame.

[0026] The beneficial effects of this invention are as follows: 1. Dual-handle operation increases the convenience of operating the left and right seats; 2. The left and right handles are independent of each other, and single / double handles can be selected as needed. With different linkage lengths, it can be adapted to the installation of various engineering machinery and has a wide range of applications; 3. The limiting method of using limiting grooves and opening holes in conjunction with limiting parts ensures that the movement of the mechanism has a unique trajectory during operation, resulting in high reliability; 4. The overall structure of the dual-linkage forward and reverse control device is simple, and it can be installed at multiple angles, increasing the diversity of installation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a double-link forward / reverse control device according to a specific embodiment of the present invention;

[0028] Figure 2 This is a side view of a dual-link forward / reverse control device according to a specific embodiment of the present invention;

[0029] Figure 3 for Figure 2 A-direction cross-section view;

[0030] Figure 4 for Figure 3 Enlarged view of part B;

[0031] Figure 5 This is a bottom view of a double-link forward / reverse control device according to a specific embodiment of the present invention;

[0032] Label Explanation:

[0033] 1. Cover plate; 11. First clearance hole;

[0034] 2. Rotary lever sleeve; 21. First connecting pipe; 211. First opening hole; 212. First through hole; 22. Lifting and limiting mechanism; 221. Connecting seat; 222. Core rod; 223. First limiting component; 224. Cam frame; 2241. Limiting groove; 225. First spring;

[0035] 3. Flexible shaft; 31. Reversing lever;

[0036] 4. First operating component; 41. First connecting rod; 411. Second limiting component; 412. Inclined ramp; 413. Limiting shaft; 42. First sleeve welded component; 421. Second connecting pipe; 423. Second opening hole; 43. First handle; 431. Strip groove; 44. Second spring; 45. Rotary support sleeve; 46. Connecting rod; 461. First pivot joint;

[0037] 5. Second control assembly; 51. Second connecting rod; 52. Second sleeve welded component; 53. Second handle;

[0038] 6. Connecting bracket; 61. Second clearance hole. Detailed Implementation

[0039] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0040] Please refer to Figures 1 to 5 The present invention relates to a double-link forward and reverse control device, comprising a frame, a rotary lever sleeve 2, a flexible shaft 3, a first control component 4, and a second control component 5;

[0041] The first control component 4 and the second control component 5 have the same structure and are symmetrically distributed on both sides of the rotary lever sleeve 2.

[0042] The flexible shaft 3 is connected to the rotating lever sleeve 2;

[0043] The first control assembly 4 includes a first connecting rod 41, a first sleeve welded part 42, and a first handle 43;

[0044] The second control assembly 5 includes a second connecting rod 51, a second sleeve welded part 52, and a second handle 53;

[0045] The rotating lever sleeve 2 includes a first connecting tube 21 with its axial direction horizontal. The first connecting tube 21 has first opening holes 211 at both ends and a first through hole 212 at its upper part. The rotating lever sleeve 2 also includes a lifting and limiting mechanism 22, which includes a connecting seat 221, a core rod 222, a first limiting member 223, a limiting groove 2241, and a first spring 225. The core rod 222 is movably connected to the connecting seat 221, and the lower end of the core rod 222... The first limiting member 223 extends into the interior of the first connecting tube 21 through the first through hole 212. The first limiting member 223 is connected to one side of the core rod 222. The limiting groove 2241 is fixed relative to the frame. The limiting groove 2241 is located above the first connecting tube 21. The first spring 225 is sleeved on the outside of the core rod 222. When the core rod 222 is in a free state, under the action of the elastic potential energy of the first spring 225, the first limiting member 223 and the limiting groove 2241 are limited and engaged.

[0046] The first sleeve welding component 42 is connected to the frame. The first sleeve welding component 42 includes a second connecting pipe 421, a rotating support sleeve 45, a connecting rod 46, and a first pivot part 461. One end of the second connecting pipe 421 is coaxially abutted against one end of the first connecting pipe 21. One end of the second connecting pipe 421 is provided with a second opening hole 423 corresponding to the first opening hole 211.

[0047] The first connecting rod 41 is movably inserted through the second connecting pipe 421 and the first connecting pipe 21. The middle part of the first connecting rod 41 is provided with a second limiting member 411. The upper part of the inner end of the first connecting rod 41 is provided with a ramp 412, and the outer end of the first connecting rod 41 is provided with a limiting shaft 413.

[0048] The rotating support sleeve 45 is rotatably sleeved on the second connecting pipe 421, and the connecting rod 46 is connected to the rotating support sleeve 45; the first pivot part 461 is provided on the connecting rod 46;

[0049] The first pivot portion 461 is located below the second connecting pipe 421;

[0050] The lower part of the first handle 43 is pivotally connected to the first pivot part 461, and the middle part of the first handle 43 is provided with a strip groove 431. The limiting shaft 413 is slidably connected in the strip groove 431.

[0051] In the first state, the upper part of the first handle 43 rotates inward, causing the first connecting rod 41 to move axially inward. The ramp 412 at the inner end of the first connecting rod 41 contacts the lower end of the core rod 222, pushing the lower end of the core rod 222 upward. The first limiting member 223 disengages from the limiting groove 2241, and the second limiting member 411 engages with the first opening hole 211 for limiting.

[0052] In the second state, the upper part of the first handle 43 rotates outward, causing the first connecting rod 41 to move axially outward. The ramp 412 at the inner end of the first connecting rod 41 disengages from the lower end of the core rod 222. The core rod 222 moves downward under the action of the first spring 225. The first limiting member 223 engages with the limiting groove 2241. The second limiting member 411 disengages from the first opening hole 211 and engages with the second opening hole 423.

[0053] In the above embodiments, refer to Figure 4 The connecting seat 221 may include a sleeve disposed outside the core rod 222 and a screw cap threadedly connected to the upper part of the sleeve. The screw cap has a limiting hole in the middle for limiting the core rod 222, and the first spring 225 is connected inside the sleeve.

[0054] Preferably, the first limiting member 223 and the second limiting member 411 are both bolts that achieve limiting by engaging with the corresponding limiting groove 2241 or opening hole through the bolt head.

[0055] The working principle of the above double-link forward / reverse control device:

[0056] When it is necessary to control the vehicle to move forward or backward using the first handle 43, firstly, by controlling the upper part of the first handle 43 to rotate inward, the first connecting rod 41 is driven to move axially inward. The ramp 412 at the inner end of the first connecting rod 41 contacts the lower end of the core rod 222, pushing the lower end of the core rod 222 upward. The first limiting member 223 disengages from the limiting groove 2241, and the second limiting member 411 engages with the first opening hole 211. At this time, the first handle 43 is released from its limiting position. By controlling the first handle 43 to move back and forth, the rotating lever sleeve 2 can be driven to rotate in both directions, so that the flexible shaft 3 can be extended and retracted to control the vehicle to move forward or backward.

[0057] When the first handle 43 needs to be disengaged, the upper part of the first handle 43 is first rotated outward, which drives the first connecting rod 41 to move axially outward. The ramp 412 at the inner end of the first connecting rod 41 disengages from the lower end of the core rod 222. The core rod 222 moves downward under the action of the first spring 225. The first limiting member 223 is limited and engaged with the limiting groove 2241. The second limiting member 411 disengages from the first opening hole 211 and is limited and engaged with the second opening hole 423. At this time, the first handle 43 and the first connecting rod 41 are limited by the second opening hole 423 and cannot be moved back and forth. At the same time, the rotating lever sleeve 2 is limited and locked by the first limiting member 223 and the limiting tooth groove 2241 and cannot be rotated back and forth.

[0058] Since the first control component 4 and the second control component 5 have the same structure and are symmetrically distributed on both sides of the rotary lever sleeve 2, the working principle of the second control component 5 is the same as that of the first control component 4, but in the opposite direction, and will not be repeated here.

[0059] The above implementation method has the following advantages: 1. Dual-handle operation increases the convenience of operating the left and right seats; 2. The left and right handles are independent of each other, and single / double handles can be selected as needed. With different linkage lengths, it can be adapted to the installation of various engineering machinery and has a wide range of applications; 3. The limiting method of using the limiting groove 2241 and the opening hole in conjunction with the limiting component ensures that the movement of the mechanism has a unique trajectory during operation and has high reliability; 4. The overall structure of the double linkage forward and reverse operation device is simple and can be installed at multiple angles, increasing the diversity of installation.

[0060] As an optional implementation, the frame is connected to a cover plate 1, and the sleeve welding component is fixed to the cover plate 1 by bolts. The cover plate 1 is provided with first clearance holes 11 at the positions of the first handle 43 and the second handle 53, respectively.

[0061] In the above embodiments, the cover plate 1 can protect the components and prevent dust, thus avoiding damage to the components of the double-link reversing control device.

[0062] As an optional implementation, the first connecting rod 41 is sleeved with a second spring 44, and the first connecting rod 41 has a protrusion near its outer end, and the second spring 44 is located between the protrusion and the outer end of the second connecting tube 421.

[0063] In the above embodiments, the second spring 44 can be selected according to different feel requirements to meet diverse feel requirements.

[0064] As an optional implementation, the opening of the first opening 211 is chamfered, the opening of the second opening 423 is chamfered, and the openings of the first opening 211 and the second opening 423 are the same size.

[0065] In the above embodiments, the design of the first opening hole 211 and the second opening hole 423 can improve the smoothness of forward and reverse operation, and make the second limiting member 411 easier to move between the first opening hole 211 and the second opening hole 423.

[0066] As an optional implementation, it also includes a connecting frame 6, which is fixedly connected to the cover plate 1, and the connecting frame 6 is provided with a second clearance hole 61 for avoiding the first connecting pipe 21.

[0067] As an optional implementation, the rotating lever sleeve 2 is connected to a forward / reverse lever 31, one end of the flexible shaft 3 is vertically connected to the forward / reverse lever 31, and the flexible shaft 3 is movably connected to the connecting frame 6.

[0068] In the above embodiments, the flexible shaft 3 and the forward / reverse lever 31 maintain a 90-degree angle, the stroke is adaptive, and it is suitable for flexible shaft 3 with different installation distances.

[0069] As an optional implementation, the connecting frame 6 is fixedly connected to the cam frame 224, and the limiting groove 2241 is provided on the upper part of the cam frame 224.

[0070] In the above embodiments, by providing an open limiting groove 2241 on the upper part of the cam frame 224 for cooperating with the first limiting member 223 for limiting, the structural stability can be further improved.

[0071] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A double-link forward / reverse control device, characterized in that, Includes a frame, a rotary lever sleeve, a flexible shaft, a first control assembly, and a second control assembly; The first and second control components have the same structure and are symmetrically distributed on both sides of the rotary lever sleeve. The flexible shaft is connected to the rotating lever sleeve; The first control assembly includes a first linkage, a first sleeve welded component, and a first handle; The second control assembly includes a second linkage, a second sleeve welded component, and a second handle; The rotating lever sleeve includes a first connecting tube with an axial horizontal direction. The first connecting tube has first opening holes at both ends and a first through hole at its upper part. The rotating lever sleeve also includes a lifting and limiting mechanism, which includes a connecting seat, a core rod, a first limiting member, a limiting groove, and a first spring. The core rod is movably connected to the connecting seat, and its lower end passes through the first through hole and extends into the interior of the first connecting tube. The first limiting member is connected to one side of the core rod. The limiting groove is fixed relative to the frame and is located above the first connecting tube. The first spring is sleeved on the outside of the core rod. When the core rod is in a free state, under the elastic potential energy of the first spring, the first limiting member and the limiting groove are engaged in a limiting fit. The first sleeve welding component is connected to the frame. The first sleeve welding component includes a second connecting pipe, a rotating support sleeve, a connecting rod and a first pivot part. One end of the second connecting pipe is coaxially abutted against one end of the first connecting pipe. One end of the second connecting pipe is provided with a second opening hole corresponding to the first opening hole. The first connecting rod is movably inserted through the second connecting pipe and the first connecting pipe, and a second limiting member is provided in the middle of the first connecting rod; a ramp is provided at the upper part of the inner end of the first connecting rod, and a limiting shaft is provided at the outer end of the first connecting rod. The rotating support sleeve is rotatably fitted onto the second connecting pipe, and the connecting rod is connected to the rotating support sleeve; the first pivot part is disposed on the connecting rod; The first pivot portion is located below the second connecting pipe; The lower part of the first handle is pivotally connected to the first pivot part, and the middle part of the first handle is provided with a strip groove, and the limiting shaft is slidably connected in the strip groove; In the first state, the upper part of the first handle rotates inward, causing the first connecting rod to move axially inward. The ramp at the inner end of the first connecting rod contacts the lower end of the core rod, pushing the lower end of the core rod upward. The first limiting member disengages from the limiting groove, and the second limiting member engages with the first opening hole for limiting. In the second state, the upper part of the first handle rotates outward, causing the first connecting rod to move axially outward. The ramp at the inner end of the first connecting rod disengages from the lower end of the core rod, and the core rod moves downward under the action of the first spring. The first limiting member engages with the limiting groove, and the second limiting member disengages from the first opening hole. The second limiting member engages with the second opening hole. The frame is connected to a cover plate, and the sleeve welding component is fixed to the cover plate by bolts. The cover plate is provided with first clearance holes at positions relative to the first handle and the second handle, respectively. It also includes a connecting frame, which is fixedly connected to the cover plate, and the connecting frame is provided with a second clearance hole for avoiding the first connecting pipe; The rotating lever is connected to a forward / reverse lever, one end of the flexible shaft is vertically connected to the forward / reverse lever, and the flexible shaft is movably connected to the connecting frame; The connecting frame is fixedly connected to the cam frame, and the limiting groove is located on the upper part of the cam frame.

2. The double-link forward / reverse control device according to claim 1, characterized in that, The first connecting rod is sleeved with a second spring. The first connecting rod has a protrusion near its outer end, and the second spring is located between the protrusion and the outer end of the second connecting tube.

3. The double-link forward / reverse control device according to claim 1, characterized in that, The first opening has a chamfer at the opening, the second opening has a chamfer at the opening, and the opening sizes of the first opening and the second opening are the same.

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