Gear locking device

Abstract

The utility model discloses a gear locking device, which relates to the technical field of gear shifting mechanisms, is mounted at the positions of a gear shifting rod and a gear shifting support, and is characterized in that the gear locking device comprises a gear locking and holding part fixedly arranged on the gear shifting support, and the gear locking and holding part is mounted on the gear shifting support through a gear shaft in a swinging manner; a gear locking follower is arranged on the stop lever shaft, and a locking applying structure is arranged between the gear locking follower and the gear locking fixed part; an unlocking controller is installed at the position of a gear handle of the gear shifting rod, and the unlocking controller is used for controlling the locking applying structure to relieve locking. According to the utility model, the gear keeping of the shift lever is realized, the structure is simple, and the gear control is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear shifting mechanism technical field, especially a gear position locking device. BACKGROUND

[0002] In the agricultural and forestry machinery operation, the traction chassis or self-propelled chassis is driven to walk, the gearbox is configured in the chassis power system to meet the needs of advancing or retreating and different speeds, and the gearbox is shifted by the gear shifting mechanism arranged at the driving position. One of the gear shifting mechanisms is to realize stepless speed control by the swing amplitude of the gear shifting lever operated by manpower.

[0003] In actual operation, based on the uneven ground in the agricultural and forestry zone, the jolt in the walking process can easily cause the gear shifting lever to move by itself, causing the walking speed to change by itself. Even in the neutral stop state, the gear shifting lever will automatically engage due to engine shaking, etc. These will affect normal agricultural and forestry operations, and in severe cases, will cause operation accidents and safety accidents. Therefore, during operation, the driving personnel mainly maintain the walking speed by holding the gear shifting lever, but this will affect the operation of other operations, the use experience is poor, and there is no good prevention measure for the automatic engagement action caused by equipment shaking when the gear is empty. Therefore, a means for automatically maintaining the gear position of the gear shifting lever is needed to solve the above problems. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a gear position locking device which can realize gear shifting lever gear position maintenance, has simple structure, and is convenient to control.

[0005] To solve the above technical problems, the technical scheme of the utility model is: a gear position locking device is installed at the gear shifting lever and the gear shifting support, the gear shifting lever is installed on the gear shifting support by swing of a gear lever shaft, characterized in that: a gear position locking holding element is fixedly arranged on the gear shifting support, a gear position locking holding follower is arranged on the gear lever shaft, a locking applying structure is arranged between the gear position locking holding follower and the gear position locking holding element; an unlocking controller is installed at the gear handle of the gear shifting lever, and the unlocking controller is used to control the locking applying structure to release the locking.

[0006] As a preferred technical scheme, the locking applying structure includes a locking disc fixedly arranged on the gear position locking holding follower, the gear position locking holding follower is axially slidably installed on the gear lever shaft, and a circumferential anti-rotation structure is arranged between the gear position locking holding follower and the gear lever shaft; a pressure receiving part for contacting the locking disc is arranged on the gear position locking holding element, a locking applying coil for pressing the locking disc onto the pressure receiving part is installed on the gear position locking holding element, and the unlocking controller releases the locking when the locking applying coil loses power.

[0007] As a preferred technical solution, the pressure receiving part is a pressure receiving surface arranged on the gear position locking member.

[0008] As a preferred technical solution, the gear position locking member comprises an annular locking member body sleeved on the gear lever shaft, and a coil mounting groove is arranged on the annular locking member body and opens towards the locking disc, and the locking application coil is fixedly mounted in the coil mounting groove.

[0009] As a preferred technical solution, the unlocking controller comprises a push button switch, which is used to control the locking application structure to be unlocked when being pressed.

[0010] As a preferred technical solution, the push button switch is mounted in the gear handle, and a button of the push button switch is arranged to protrude from a top end surface of the gear handle.

[0011] As a preferred technical solution, the push button switch comprises a push button box body, an operating button is slidingly mounted on the push button box body, a static contact is fixedly arranged in the push button box body, a dynamic contact is fixedly arranged on an inner end of the operating button, and a closing maintaining structure is arranged between the operating button and the push button box body.

[0012] As a preferred technical solution, the gear lever is hollow.

[0013] As a preferred technical solution, a gear lever connecting frame is arranged between the gear lever and the gear lever shaft, the gear lever connecting frame comprises a lever shaft connecting plate and a gear lever connecting plate which are arranged perpendicularly to each other, the gear lever shaft is fixedly arranged on the lever shaft connecting plate and arranged perpendicularly to the lever shaft connecting plate, a gear lever swing pin which is perpendicular to the gear lever connecting plate is mounted on the gear lever connecting plate, and the gear lever is swingingly mounted on the gear lever swing pin.

[0014] As a preferred technical solution, a gear lever detector is mounted on the gear lever connecting plate and located on a side of the gear lever swing pin, and the gear lever detector is used to detect a swing state of the gear lever.

[0015] Due to the adoption of the above technical scheme, the gear locking device is installed at the gear shift lever and the gear shift support, the gear shift lever is swingably installed on the gear shift support through a gear lever shaft, and is characterized in that: a gear locking holding element is fixedly arranged on the gear shift support, a gear locking holding follower is arranged on the gear lever shaft, a locking applying structure is arranged between the gear locking holding follower and the gear locking holding element; an unlocking controller is installed at a gear handle of the gear shift lever, and the unlocking controller is used for controlling the locking applying structure to release the locking. Under normal circumstances, the locking applying structure keeps the locking action, the locking action keeps the gear locking holding follower in a fixed state relative to the gear locking holding element, and the gear shift lever realizes gear position keeping. When gear position control is needed, the locking of the locking applying structure is released through the unlocking controller at the gear handle, the gear shift lever restores the rotational freedom, and the gear position control can be performed. The locking element is arranged only on the gear lever shaft, and the unlocking controller is arranged at the gear handle, so that the structure is simple, and the gear position control is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] The following drawings only aim to schematically illustrate and explain the present application, and do not limit the scope of the present application. Among them:

[0017] Figure 1 is a schematic diagram of the structure of the embodiment of the present application;

[0018] Figure 2 is a schematic diagram of the structure of the embodiment of the present application from another perspective;

[0019] Figure 3 is Figure 1 is a schematic diagram of the structure of the embodiment of the present application from another perspective;

[0020] Figure 4 is a schematic diagram of the structure of the embodiment of the present application from another perspective;

[0021] Figure 5 is a schematic diagram of the structure of the embodiment of the present application from another perspective; Figure 4

[0022] Figure 6 is a schematic diagram of the structure of the embodiment of the present application from another perspective;

[0023] ​In the figure: 1 - shift support; 2 - shift lever; 21 - lever shaft; 22 - shift knob; 23 - shift transmission lever; 3 - shift position locking fixture; 31 - annular fixture body; 32 - coil mounting groove; 4 - shift position locking follower; 5 - locking application structure; 51 - locking disc; 52 - circumferential anti-rotation structure; 53 - pressure receiving portion; 54 - locking application coil; 6 - unlocking controller; 61 - button box body; 62 - operation button; 63 - stationary contact; 64 - movable contact; 65 - closure retention structure; 7 - lever connecting frame; 71 - shaft connecting plate; 72 - lever connecting plate; 73 - lever swing pin; 74 - lever detector; 75 - lever swing plate; 76 - swing limit pin; 77 - swing limit long hole. DETAILED DESCRIPTION

[0024] The utility model is further illustrated below in combination with the drawings and examples. In the following detailed description, certain exemplary embodiments of the utility model are described by way of illustration only. It is needless to say that those skilled in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model. Therefore, the drawings and description are illustrative in nature and are not used to limit the protection scope of the claims.

[0025] As shown in Figure 1 , Figure 2 and Figure 3 , the shift position locking device is installed at the shift lever 2 and the shift support 1, the shift lever 2 is swingably installed on the shift support 1 through the lever shaft 21, and the shift support 1 is a carrier of the shift mechanism, and its specific structure can be set as needed, which is not limited in the embodiment. Conventionally, as shown in Figure 1 and Figure 2 , the shift lever 2 is hingedly connected with the shift transmission lever 23, and when the shift lever 2 is operated to swing, the shift transmission lever 23 is pushed and pulled, forming a shift operation action on the gearbox.

[0026] Further, as shown in Figure 4 and Figure 5 , the shift lever 2 and the lever shaft 21 in the embodiment are provided with a lever connecting frame 7; the lever connecting frame 7 includes a shaft connecting plate 71 and a lever connecting plate 72 which are arranged perpendicularly to each other, the lever shaft 21 is fixedly arranged on the shaft connecting plate 71, and the lever shaft 21 is arranged perpendicularly to the shaft connecting plate 71. In the case where the lever connecting frame 7 is provided, the shift transmission lever 23 is hingedly connected on the lever connecting frame 7, more specifically, the shift transmission lever 23 is hingedly connected on the shaft connecting plate 71, thereby forming the aforementioned hinged connection of the shift transmission lever 23 on the shift lever 2. The shift lever 2 is installed on the lever connecting plate 72.

[0027] As Figure 1 , Figure 2 and Figure 3 shown, the device comprises a gear position locking fixed part 3 fixedly arranged on the gear shift support 1, a gear position locking follower 4 arranged on the gear lever shaft 21, and a locking applying structure 5 arranged between the gear position locking follower 4 and the gear position locking fixed part 3; an unlocking controller 6 is arranged at the gear handle 22 of the gear shift lever 2, and the unlocking controller 6 is used to control the locking applying structure 5 to release the locking.

[0028] Normally, the locking applying structure 5 keeps the locking effect, which makes the gear position locking follower 4 keep the fixed state relative to the gear position locking fixed part 3, and the gear shift lever 2 realizes the gear position keeping. When the gear position needs to be controlled, the unlocking controller 6 at the gear handle 22 releases the locking of the locking applying structure 5, and the gear shift lever 2 restores the rotation freedom, so that the gear position control can be performed. After the control is completed, the unlocking controller 6 is released, and the locking applying structure 5 re-applies the locking to keep the gear position.

[0029] As Figure 3 shown, the locking applying structure 5 comprises a locking disc 51 fixedly arranged on the gear position locking follower 4, the gear position locking follower 4 is axially slidingly arranged on the gear lever shaft 21, and a circumferential anti-rotation structure 52 is arranged between the gear position locking follower 4 and the gear lever shaft 21, so that the locking disc 51 and the gear shift lever 2 can be synchronously rotated or synchronously locked. The gear position locking fixed part 3 is provided with a pressure receiving part 53 for contacting the locking disc 51, and the gear position locking fixed part 3 is provided with a locking applying coil 54 for pressing the locking disc 51 to the pressure receiving part 53, and the unlocking controller 6 releases the locking when controlling the locking applying coil 54 to lose the power.

[0030] Normally, the locking applying coil 54 keeps the power, and the magnetic attraction generated thereby promotes the locking disc 51 to press against the pressure receiving part 53, and the friction generated by the pressing makes the locking disc 51 not rotate relative to the pressure receiving part 53, thereby achieving the effect of keeping the gear position of the gear shift lever 2. After the unlocking controller 6 controls the locking applying coil 54 to lose the power, the pressing action between the locking disc 51 and the pressure receiving part 53 disappears, and the rotation of the gear shift lever 2 is no longer hindered by the friction, so that the rotation control can be performed at will, thereby achieving the convenient gear position control operation.

[0031] The pressure receiving part 53 is a pressure receiving surface arranged on the gear position locking member 3, and generates a friction force for locking through surface-to-surface pressure contact. The friction force can be matched with stepless operation at the gear lever 2, and gear position locking can be conveniently formed at any position. The specific form of the pressure receiving surface is not limited herein. The circumferential rotation preventing structure 52 is realized by a pin key structure or a spline structure, and is not limited herein.

[0032] As shown in the embodiment, Figure 3 The gear position locking member 3 includes an annular locking member body 31 arranged on the gear lever shaft 21. The annular locking member body 31 is bolted on the gear shift support 1 through an ear structure or a flange structure, and can also be directly welded on the gear shift support 1, which is not limited herein. A coil mounting groove 32 is arranged on the annular locking member body 31 and opens towards the locking disc 51. The locking applying coil 54 is fixedly arranged in the coil mounting groove 32. Based on this structure, the pressure receiving surface of the pressure receiving part 53 can be directly formed by the end surface of the annular locking member body 31. The coil mounting groove 32 can be an annular groove or a plurality of separate cylindrical grooves arranged circumferentially on the annular locking member body 31, which is not limited herein. The embodiment is only schematically shown by the annular groove.

[0033] In addition to the above structure, the gear position locking follower 4 is fixed on the gear lever shaft 21, and the locking disc 51 is slidingly arranged on the gear position locking follower 4 through a pin hole. Alternatively, the locking applying coil 54 is arranged on the gear position locking follower 4 and reversely magnetically attracts the pressure receiving part 53, which can produce the same locking effect. These means belong to the equivalent means transformation of the locking applying structure 5 and should be within the protection scope.

[0034] Preferably, as shown in the drawings, Figure 4 and Figure 5 The gear lever connecting plate 72 is provided with a gear lever swing pin 73 perpendicular to the gear lever connecting plate 72, and the gear lever 2 is swingingly arranged on the gear lever swing pin 73. Through this swing arrangement, the gear lever 2 can only be operated to engage gears within a certain swing range, which can reduce the probability of self-engaging gears due to shaking when the gear is empty.

[0035] Preferably, the gear lever connecting plate 72 is provided with a gear lever detector 74 on the side of the gear lever swing pin 73. The gear lever detector 74 is used to detect the swing state of the gear lever 2, so as to conveniently feedback the gear engagement action of the gear lever 2. The gear lever detector 74 can be realized by a proximity switch, which is not limited herein.

[0036] More preferably, a shift lever swing plate 75 is mounted on the shift lever connecting plate 72 through the shift lever swing pin 73, and the shift lever 2 is fixedly arranged on the shift lever swing plate 75; the shift lever connecting plate 72 is fixedly provided with a swing limiting pin 76, and the shift lever swing plate 75 is provided with a swing limiting long hole 77 corresponding to the swing limiting pin 76. In this way, the swing amplitude of the shift lever 2 is limited, and the operation experience is improved.

[0037] As shown in Figure 1 , Figure 2 and Figure 3 , the unlocking controller 6 of the embodiment includes a button switch for controlling the lock holding application structure 5 to release the lock when pressed. For the specific structure of the lock holding application structure 5 of the embodiment, the button switch is de-energized when pressed, and further, by pressing, the circuit of the lock holding application coil 54 is opened, achieving the effect of de-energization.

[0038] As shown in Figure 6 , the button switch includes a button box body 61, an operation button 62 is slidably installed through the button box body 61, a static contact 63 is fixedly arranged in the button box body 61, a dynamic contact 64 is fixedly arranged on the inner end of the operation button 62, and a closing retaining structure 65 is arranged between the operation button 62 and the button box body 61. Under normal circumstances, the dynamic contact 64 is in contact with the static contact 63 under the action of the closing retaining structure 65, the power supply circuit of the lock holding application coil 54 in the lock holding application structure 5 is in a closed state, and the lock holding application coil 54 generates magnetic attraction force. When the operation button 62 is pressed, the static contact 63 and the dynamic contact 64 are disconnected, the lock holding application coil 54 is de-energized, and the magnetic attraction force is released.

[0039] Preferably, as shown in Figures 1 to 5 , the button switch is installed in the shift knob 22, and the button of the button switch is arranged to protrude from the top end surface of the shift knob 22. In this way, when the driver holds the shift knob 22 to control the gear position, the thumb is pressed on the button of the button switch, and the unlocking purpose is achieved, further improving the convenience of gear position control. Based on this setting, the button switch is preferably a button switch that can be automatically returned without pressing, which is easily obtained in combination with the prior art, and will not be described here. Preferably, the shift lever 2 is hollowly arranged to arrange the circuit wires of the button switch through the inner cavity of the shift lever 2, avoid the exposure of the wires, and improve the aesthetic appearance.

[0040] On the basis of the above-mentioned functional principle, the unlocking controller 6 is not limited to a button switch, and can adopt a commonly used switch form such as a touch switch, a knob switch, or a dial switch, so that the same technical effect can be achieved, and these switch forms should be within the scope of the unlocking controller 6.

[0041] In addition, the present embodiment only lists the locking means in which the electromagnetic attraction force is used to press the locking disc 51, and other locking means in which the electromagnetic attraction force is used to generate the locking action between the gear locking follower 4 and the gear locking fixed element 3, and the mechanical means is used to generate the locking action between the gear locking follower 4 and the gear locking fixed element 3, all of which are equivalent means transformation of the locking application structure 5 and should be within the protection scope.

[0042] In summary, the present embodiment realizes gear holding through the locking application structure 5, and the gear holding can be conveniently released at any time through the unlocking controller 6 at the gear handle 22, so that the gear control can be performed, and the gear control is convenient. The present embodiment only sets the locking element on the gear lever shaft 21, and sets the unlocking controller 6 at the gear edge, so that the overall structure is simple and convenient to use in the gear shifting mechanism.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A range lock device installed at a shift lever and a shift bracket, the shift lever being swingably installed on the shift bracket by a shift lever shaft, characterized in that: The gearshift support is provided with a gear position locking element fixedly arranged thereon, the gear lever shaft is provided with a gear position locking follower, and a locking application structure is arranged between the gear position locking follower and the gear position locking element; an unlocking controller is arranged at the gear handle of the gearshift lever, and the unlocking controller is used to control the locking application structure to be unlocked.

2. The range locking device according to claim 1, characterized in that: The locking application structure comprises a locking disc fixedly arranged on the gear position locking follower, the gear position locking follower is axially slidably arranged on the gear lever shaft, and a circumferential anti-rotation structure is arranged between the gear position locking follower and the gear lever shaft; the gear position locking element is provided with a pressure receiving portion used to contact the locking disc, and the gear position locking element is provided with a locking application coil used to press the locking disc onto the pressure receiving portion, and the unlocking controller is used to control the locking application coil to be de-energized to unlock.

3. The range locking device according to claim 2, characterized in that: The pressure receiving portion is a pressure receiving surface arranged on the gear position locking element.

4. The range locking device of claim 2, wherein: The gear position locking element comprises an annular element body sleeved on the gear lever shaft, and a coil mounting groove opening towards the locking disc is arranged on the annular element body, and the locking application coil is fixedly arranged in the coil mounting groove.

5. The range locking device of claim 1, wherein: The unlocking controller comprises a push button switch, and the push button switch is used to control the locking application structure to be unlocked when being pressed.

6. The range locking device according to claim 5, characterized in that: The push button switch is arranged in the gear handle, and a push button of the push button switch protrudes from a top end surface of the gear handle.

7. The range locking device of claim 5, wherein: The push button switch comprises a push button box body, an operating push button is slidably arranged on the push button box body, a static contact is fixedly arranged in the push button box body, a dynamic contact is fixedly arranged on an inner end of the operating push button, and a closing maintaining structure is arranged between the operating push button and the push button box body.

8. The range locking device of claim 5, wherein: The gearshift lever is hollow.

9. A range locking device according to any one of claims 1 to 8, characterized in that: A gear lever connecting frame is arranged between the gearshift lever and the gear lever shaft, the gear lever connecting frame comprises a lever shaft connecting plate and a gear lever connecting plate arranged perpendicularly to each other, the gear lever shaft is fixedly arranged on the lever shaft connecting plate and arranged perpendicularly to the lever shaft connecting plate, a gear lever swing pin perpendicular to the gear lever connecting plate is arranged on the gear lever connecting plate, and the gearshift lever is swingably arranged on the gear lever swing pin.

10. The range locking device of claim 9, wherein: A gear lever detector is arranged on the gear lever connecting plate and located on a side of the gear lever swing pin, and the gear lever detector is used to detect a swing state of the gearshift lever.

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