Differential lock locking device for mechanical equipment and mechanical equipment

Abstract

The invention discloses a differential lock locking device for mechanical equipment and the mechanical equipment, and the differential lock locking device comprises a differential lock locking shaft which is used for being connected with a differential lock of the mechanical equipment and locking the differential lock; the stay wire transmission mechanism is connected with the differential lock locking shaft and can convert rotary motion into linear motion so as to drive the differential lock locking shaft to lock the differential lock; the rotary driving part is in driving connection with the stay wire transmission mechanism; and the controller is in communication connection with the rotary driving part and is used for controlling the rotary driving part to drive the power input end of the stay wire transmission mechanism to rotate. The differential lock locking device has the advantages of being simple in structure and capable of automatically locking the differential lock.

Description

Technical Field

[0001] The present application belongs to the technical field of mechanical equipment, and specifically relates to a differential lock device for mechanical equipment and the mechanical equipment. Background Art

[0002] In modern agriculture and / or engineering, large-scale mechanized production has become the norm. However, mechanical production still requires significant manual labor. To further reduce labor losses, the agricultural machinery and / or engineering industries are transitioning toward intelligent and electrified systems. Traditional differential locks in mechanical equipment typically require the driver to manually rotate the differential drive shaft to engage the differential. This locking method is incapable of automatically locking the differential lock to free the machine from a mud pit in autonomous driving scenarios. Summary of the Invention

[0003] The purpose of the present application is to provide a differential lock device for mechanical equipment and the mechanical equipment, wherein the differential lock device has the advantages of a simple structure and can automatically lock the differential lock.

[0004] In order to achieve the above-mentioned objectives, the present application provides, in a first aspect, a differential lock device for a mechanical device, the differential lock device comprising:

[0005] A differential lock shaft is used to connect with the differential lock of the mechanical equipment and lock the differential lock;

[0006] A cable transmission mechanism is connected to the differential lock shaft and is capable of converting rotary motion into linear motion to drive the differential lock shaft to lock the differential lock;

[0007] A rotating drive member is connected to the wire transmission mechanism;

[0008] The controller is in communication with the rotary drive member and is used to control the rotary drive member to drive the power input end of the wire transmission mechanism to rotate.

[0009] In an embodiment of the present application, the differential lock device further includes:

[0010] a lock detector, connected to the controller for detecting whether the differential lock is in a locked state;

[0011] A road condition detector, which is in communication with the controller and is used to detect whether the construction machinery is in a road condition where it needs to be rescued;

[0012] The controller is configured to:

[0013] Make sure the construction machinery is in a road condition waiting to be rescued;

[0014] Controlling the rotary drive member to perform a first driving operation so that the cable transmission mechanism drives the differential lock shaft to rotate in a first preset direction;

[0015] Make sure the differential lock is in the locked state;

[0016] The rotary driving member is controlled to stop performing the first driving operation.

[0017] In an embodiment of the present application, the differential lock device further includes:

[0018] an unlocking detector, communicating with the controller and used to detect whether the differential lock is in an unlocked state;

[0019] The controller is also configured to:

[0020] Make sure the construction machinery has left the road condition where it needs to be rescued;

[0021] controlling the rotary drive member to perform a second driving operation to rotate the differential lock shaft in a second preset direction, wherein the second preset direction is opposite to the first preset direction;

[0022] Make sure the differential lock is unlocked;

[0023] The rotary driving member is controlled to stop performing the second driving operation.

[0024] In an embodiment of the present application, the wire transmission mechanism includes:

[0025] The transmission assembly is driven by a rotating driving member to rotate the transmission assembly;

[0026] A connecting column is provided on the transmission assembly, wherein a central axis of the connecting column is spaced apart from a rotation center of the transmission assembly;

[0027] A pull wire, one end of which is connected to the connecting column, and the other end of which is connected to the differential lock shaft.

[0028] In an embodiment of the present application, the pull wire is made of a flexible material.

[0029] In an embodiment of the present application, the transmission assembly includes a mounting plate and a transmission plate, the rotary driving member is arranged on the mounting plate, the transmission plate is rotatably arranged on the mounting plate and is driven and connected to the rotary driving member, the connecting column is arranged on the transmission plate, and the pull wire is connected to one end of the connecting column away from the transmission plate.

[0030] In an embodiment of the present application, a rotatable gear portion is formed at the driving end of the rotary driving member, and an engaging tooth portion for engaging with the gear portion is formed at an arc-shaped edge of the transmission plate.

[0031] In an embodiment of the present application, the wire transmission mechanism further includes a protection tube assembly disposed on the mounting plate and used to protect the wire.

[0032] In an embodiment of the present application, the differential lock device further includes:

[0033] A connecting plate is provided on the differential lock shaft, and the cable transmission mechanism is connected to an end of the connecting plate away from the rotary drive member;

[0034] The pedal is connected to one end of the connecting plate close to the rotary drive member and is used to apply force to one end of the connecting plate to drive the differential lock shaft to lock the differential lock.

[0035] A second aspect of the present application provides a mechanical device, which includes the above-mentioned differential lock device for mechanical equipment.

[0036] The above technical solution shows that the differential lock device includes a differential lock shaft, a cable transmission mechanism, a rotary drive member, and a controller. The differential lock shaft is used to connect to the differential lock of the mechanical equipment and lock the differential lock; the cable transmission mechanism is connected to the differential lock shaft and can convert rotational motion into linear motion to drive the differential lock shaft to lock the differential lock; the rotary drive member is connected to the cable transmission mechanism for driving; and the controller is connected to the rotary drive member for controlling the rotary drive member to drive the power input end of the cable transmission mechanism to rotate. The differential lock device has a simple structure. By providing the rotary drive member, the cable transmission mechanism, and the controller, the differential lock shaft can be automatically driven to move so that the differential lock is automatically locked. No manual force is required to drive the differential lock shaft to move, which reduces labor intensity and improves the convenience of use of the differential lock device and the mechanical equipment.

[0037] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0039] Figure 1 This is a schematic structural diagram of a differential lock device from a first perspective in an embodiment of the present application;

[0040] Figure 2 This is a second perspective structural diagram of the differential lock device in an embodiment of the present application.

[0041] Description of Reference Numerals

[0042] 1- Differential lock shaft; 2- Cable transmission mechanism; 201- Transmission assembly; 2011- Mounting plate; 2012- Transmission plate; 2013- Engaging tooth portion; 2014- Arc hole; 202- Connecting column; 203- Pull wire; 204- Protective tube assembly; 2041- Mounting seat; 2042- Protective tube; 2043- First plug; 2044- Second plug; 3- Rotary drive member; 4- Connecting plate; 5- Pedal; 501- Pedal portion; 502- Connecting rod portion; 6- First limit switch; 7- Second limit switch; 8- Reset member. DETAILED DESCRIPTION

[0043] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0044] In the embodiment of the present application, a novel differential lock device for mechanical equipment is provided, such as Figure 1-Figure 2 As shown, the differential lock device includes:

[0045] A differential lock shaft 1, used to connect to a differential lock of a mechanical device and lock the differential lock;

[0046] The cable transmission mechanism 2 is connected to the differential lock shaft 1 and can convert the rotational motion into linear motion to drive the differential lock shaft 1 to lock the differential lock;

[0047] The rotary drive member 3 is connected to the wire transmission mechanism 2;

[0048] The controller is in communication with the rotary drive member 3 and is used to control the rotary drive member 3 to drive the power input end of the wire transmission mechanism 2 to rotate.

[0049] Specifically, the mechanical equipment in this embodiment can be selected as agricultural machinery (such as a rice transplanter) and includes a differential lock. The differential lock shaft 1 can lock the differential lock after rotating about the central axis in a first preset direction. The rotary drive member 3 can be selected as a motor. If the mechanical equipment falls into a mud pit, the rotary drive member 3 can perform a rotation operation under the control of the controller, and the power input end of the cable transmission mechanism 2 also rotates accordingly. The cable transmission mechanism 2 can convert the rotational motion of the power input end into linear motion (in this embodiment, linear motion refers to motion along a linear trajectory, such as a straight trajectory motion or a broken trajectory motion that is approximately straight), that is, the power output end of the cable transmission mechanism 2 transmits power to the differential lock shaft 1 by performing linear motion. The differential lock shaft 1 rotates about the central axis in a first preset direction (such as clockwise) driven by the power output end of the cable transmission mechanism 2 to lock the differential lock. When the differential lock is locked, the ability of the mechanical equipment to pass through the mud pit can be increased, and it can quickly escape from the mud pit.

[0050] The differential lock device in this embodiment has a simple structure. By setting a rotating drive member 3, a wire transmission mechanism 2 and a controller, the differential lock shaft 1 can be automatically driven to move, so that the differential lock is automatically locked. No human force is required to drive the differential lock shaft 1 to move, which reduces labor intensity and improves the convenience of using the differential lock device and mechanical equipment.

[0051] Furthermore, in this embodiment, after the controller controls the rotating drive member 3 to rotate in a third preset direction (such as a forward direction), the differential lock locking shaft 1 can be pivoted in the first preset direction and the differential lock can be locked; on the contrary, if the controller controls the rotating drive member 3 to rotate in a fourth preset direction (the fourth preset direction is opposite to the third preset direction, such as a reverse direction), the differential lock locking shaft 1 can be rotated in a second preset direction (the second preset direction is opposite to the first preset direction, such as a counterclockwise direction) and the locked state of the differential lock can be released.

[0052] In one embodiment of the present application, the differential lock device further includes:

[0053] a lock detector, connected to the controller for detecting whether the differential lock is in a locked state;

[0054] A road condition detector, which is in communication with the controller and is used to detect whether the construction machinery is in a road condition where it needs to be rescued;

[0055] The controller is configured to perform the following steps:

[0056] Step S101: determining that the construction machinery is in a road condition to be rescued;

[0057] Step S102: controlling the rotary drive member 3 to perform a first driving operation so that the cable transmission mechanism 2 drives the differential lock shaft 1 to rotate in a first preset direction;

[0058] Step S103: Determine whether the differential lock is in a locked state;

[0059] Step S104: controlling the rotary driving member 3 to stop performing the first driving operation.

[0060] Specifically, the road condition to be escaped in this embodiment may be a mud pit condition, and the road condition detector includes a wheel speed detection module and a positioning module both of which are communicatively connected to the controller. There are multiple wheel speed detection modules (such as wheel speed sensors), and each wheel speed detection module is used to detect the rotational speed of each wheel of the mechanical equipment. The positioning module can be optionally a Beidou satellite guidance system and is used to detect the geographical location of the engineering machinery. The wheel speed detection module and the positioning module send their respective detection results to the controller. If the controller determines that the rotational speed of one wheel of the mechanical equipment exceeds the preset speed range based on the detection results of each wheel speed detection module, it means that the rotational speed of one wheel obviously exceeds the rotational speed of the other wheels. On this basis, it is determined according to the detection results of the positioning module that the position of the mechanical equipment is within a preset position range (such as a circular range with a radius of 2 meters) within a preset time length (such as 1 minute), indicating that the position of the mechanical equipment has not changed significantly within the preset time length. Combining the above two situations can further determine that the engineering machinery is in a road condition to be escaped.

[0061] After determining that the engineering machinery is in a road condition to be escaped, the controller controls the rotary drive member 3 to perform a first driving operation. During the first driving operation, the driving end of the rotary drive member 3 rotates toward a third preset direction, and the wire transmission mechanism 2 transmits power between the rotary drive member 3 and the differential lock shaft 1 to make the differential lock shaft 1 rotate toward the first preset direction.

[0062] Furthermore, in this embodiment, after detecting that the differential lock is in the locked state, the lock detector sends a signal to the controller. Upon receiving the signal, the controller determines that the differential lock shaft 1 has rotated in the first predetermined direction to an angle that locks the differential lock, thereby further determining that the differential lock is in the locked state. The controller then controls the rotary drive member 3 to stop rotating. The above steps enable the differential lock device to automatically detect whether the construction machine is in a road condition requiring escape, and automatically lock the differential lock when the construction machine is in such a condition, thereby improving the construction machine's ability to escape from such a condition. The control is simple and easy to implement.

[0063] In one embodiment of the present application, the differential lock device further includes:

[0064] an unlocking detector, communicating with the controller and used to detect whether the differential lock is in an unlocked state;

[0065] The controller is further configured to perform the following steps:

[0066] Step S201: Determining that the construction machinery has left the road condition to be escaped;

[0067] Step S202: controlling the rotary drive member 3 to perform a second driving operation to rotate the differential lock shaft 1 in a second preset direction, wherein the second preset direction is opposite to the first preset direction;

[0068] Step S203: Determine whether the differential lock is in an unlocked state;

[0069] Step S204: controlling the rotary driving member 3 to stop performing the second driving operation.

[0070] Furthermore, after step S104 is completed, the controller controls the road condition detector to continue road condition detection. If the controller determines that the rotational speeds of any two wheels of the mechanical equipment are the same based on the detection results of each wheel speed detection module in the road condition detector, it means that the rotational speeds of each wheel are the same; on this basis, according to the detection results of the positioning module, it is determined that the position of the mechanical equipment exceeds the preset position range (such as a circular range with a radius of 2 meters) within a preset time length (such as 1 minute), indicating that the position of the mechanical equipment has changed significantly within the preset time length. Combining the above two situations, it can be further determined that the construction machinery has escaped from the road condition to be rescued.

[0071] The differential lock device further includes a reset member 8 provided on the differential lock shaft 1 and used to reset the differential lock shaft 1 . In this embodiment, the reset member 8 is a return spring provided on the differential lock shaft 1 .

[0072] After determining that the engineering machinery has escaped from the road condition to be escaped, the controller controls the rotary drive member 3 to perform a second driving operation. During the second driving operation, the driving end of the rotary drive member 3 (i.e., the gear portion on the rotary drive member 3) rotates toward the fourth preset direction, and the wire 203 of the wire transmission mechanism 2 gradually reduces the tension applied to the differential lock shaft 1, so that the differential lock shaft 1 rotates toward the second preset direction under the action of the return spring.

[0073] Furthermore, in this embodiment, the unlocking detector sends a signal to the controller after detecting that the differential lock is in the unlocked state. Upon receiving the signal, the controller can determine that the pull wire 203 no longer applies tension to the differential lock shaft 1 (or the tension is less than the reset force applied by the return spring to the differential lock shaft 1). The differential lock shaft 1 rotates to its original position in the fourth preset direction under the action of the return spring, and the controller then controls the rotary drive member 3 to stop rotating. The above steps enable the differential lock device to automatically detect when the engineering machine has escaped from the road condition to be escaped, and automatically release the locked state of the differential lock when the engineering machine has escaped from the road condition to be escaped, so as to avoid affecting the subsequent movement of the engineering machine.

[0074] In one embodiment of the present application, the wire transmission mechanism 2 includes:

[0075] The transmission assembly 201 and the rotary driving member 3 drive the transmission assembly 201 to rotate;

[0076] The connecting column 202 is provided on the transmission assembly 201, and the central axis of the connecting column 202 is spaced apart from the rotation center of the transmission assembly 201;

[0077] A pull wire 203 , one end of which is connected to the connecting post 202 , and the other end of which is connected to the differential lock shaft 1 .

[0078] Specifically, if Figure 2 As shown, in this embodiment, the transmission assembly 201 is the power input end of the cable transmission mechanism 2 and is spaced apart from the differential lock shaft 1. The transmission assembly 201 is driven and connected to the rotary drive member 3. After the rotary drive member 3 performs the driving operation (i.e., the rotation operation), the transmission assembly 201 also rotates around the rotation center at any time. When the transmission assembly 201 rotates, the connecting column 202 set on the transmission assembly 201 also moves accordingly (the connecting column 202 rotates around the rotation center of the transmission assembly 201, and the connecting column 202 itself does not rotate). The cable 203 is arranged in a linear shape and connects the connecting plate 4 and the connecting column 202. When the connecting column 202 moves, it can drive the cable 203 to move along the setting direction of the cable 203. Under the pulling action of the cable 203, the differential lock shaft 1 can rotate around its central axis (i.e., the central axis of the differential lock shaft 1) to lock the differential lock.

[0079] In one embodiment of the present application, the pull wire 203 is made of a flexible material.

[0080] Specifically, the flexible material member in this embodiment refers to a member made of a material that does not break when bent. Furthermore, the pull wire 203 can be a steel wire rope or a nylon rope. The pull wire 203 of this type can not only effectively implement linear motion, but also has the advantages of low cost and ease of production. When the differential lock needs to be unlocked, it can gradually reduce and eventually eliminate the tension on the differential lock shaft 1 to unlock the differential lock. Furthermore, the pull wire 203 in this embodiment can also be made of other types of flexible materials besides steel wire rope and nylon rope.

[0081] In one embodiment of the present application, the transmission assembly 201 includes a mounting plate 2011 and a transmission plate 2012 (the transmission plate 2012 in this embodiment is a fan-shaped gear), the rotating drive member 3 is arranged on the mounting plate 2011, the transmission plate 2012 is rotatably arranged on the mounting plate 2011 and is driven and connected to the rotating drive member 3, the connecting column 202 is fixed on the transmission plate 2012, and the pull wire 203 is connected to the end of the connecting column 202 away from the transmission plate 2012.

[0082] Specifically, the mounting plate 2011 is arranged horizontally, the rotary drive member 3 is arranged below the mounting plate 2011 and is connected to the mounting plate 2011, and the transmission plate 2012 is arranged on the mounting plate 2011 via a rotating shaft and can rotate relative to the mounting plate 2011. Furthermore, the transmission plate 2012 rotates about the axial center of the rotating shaft, and the rotating shaft and the connecting posts 202 are spaced apart in the radial direction of the transmission plate 2012. The connection posts 202 are arranged perpendicular to the arrangement direction of the transmission plate 2012. The transmission plate 2012 can rotate relative to the mounting plate 2011 under the driving action of the rotary drive member 3. The connecting posts 202 fixed to the transmission plate 2012 move along an arc-shaped trajectory. After the connecting posts 202 move, they can pull the differential lock shaft 1 around its central axis via the pull wire 203 to lock the differential lock.

[0083] Furthermore, in this embodiment, the transmission plate 2012 and the rotary drive member 3 are located on the same side of the mounting plate 2011, the pull wire 203 is located on the side of the mounting plate 2011 facing away from the transmission plate 2012, and the mounting plate 2011 is further formed with an arcuate hole 2014 extending therethrough. One end of a connecting post 202 is disposed on the transmission plate 2012, and the other end of the connecting post 202 passes through the arcuate hole 2014 and is connected to the pull wire 203. The connecting post 202 is movable within the arcuate hole 2014. When the differential lock is to be locked, the connecting post 202 moves within the arcuate hole 2014 in a direction away from the differential lock shaft 1; when the differential lock is to be unlocked, the connecting post 202 moves within the arcuate hole 2014 in a direction toward the differential lock shaft 1.

[0084] In one embodiment of the present application, the unlocking detector can be optionally a first limit switch 6 arranged on the mounting plate 2011 and located on one side of the transmission plate 2012. When the transmission plate 2012 rotates by a first preset angle in the fifth preset direction (in this embodiment, the fifth preset direction refers to the direction close to the differential lock shaft 1 on the movement path of the transmission plate 2012) driven by the rotating drive member 3, it can contact the first limit switch 6. The first limit switch 6 is triggered and sends a signal to the controller. After receiving the above signal, the controller can determine that the pull wire 203 no longer applies a pulling force to the differential lock shaft 1 (or the pulling force is less than the reset force applied by the return spring). The differential lock shaft 1 has rotated to its original position in the second preset direction under the action of the return spring. The differential lock has been unlocked, and it can be determined that the differential lock is in an unlocked state.

[0085] In one embodiment of the present application, the locking detector can be optionally provided on the mounting plate 2011 and located on the other side of the transmission plate 2012 (the second limit switch 7 and the first limit switch 6 are respectively located on the opposite sides of the transmission plate 2012). When the transmission plate 2012 rotates in the sixth preset direction (in this embodiment, the sixth preset direction refers to the direction away from the differential lock shaft 1 on the movement path of the transmission plate 2012) by a second preset angle under the drive of the rotating drive member 3, it can contact the second limit switch 7. The second limit switch 7 is triggered and sends a signal to the controller. After receiving the above signal, the controller can determine that the differential lock shaft 1 has rotated in the first preset direction by an angle that can lock the differential lock, and then determine that the differential lock is in a locked state, that is, the differential lock has been locked.

[0086] In one embodiment of the present application, a rotatable gear portion is formed at the driving end of the rotary driving member 3 , and an engaging tooth portion 2013 for engaging with the gear portion is formed at the arc-shaped edge of the transmission plate 2012 .

[0087] Specifically, in this embodiment, the rotating driving member 3 can be further selected as an electric glass lifting motor. When the rotating driving member 3 performs the driving operation, the gear part (not shown in the figure) rotates and engages the meshing tooth part 2013, so that the transmission plate 2012 rotates relative to the mounting plate 2011. The above-mentioned structural setting can not only realize the power transmission between the rotating driving member 3 and the transmission plate 2012, but also drive the transmission plate 2012 to rotate. The structure is simple and is conducive to reducing the difficulty and cost of production.

[0088] In one embodiment of the present application, the wire transmission mechanism 2 further includes a protection tube assembly 204 disposed on the mounting plate 2011 and used to protect the wire 203 .

[0089] Specifically, the protective tube assembly 204 includes a mounting seat 2041 and a protective tube 2042. The mounting seat 2041 is arranged on the mounting plate 2011 and is spaced apart from the connecting column 202. The protective tube 2042 is arranged on the mounting seat 2041 and extends in a direction away from the connecting column 202. The setting direction of the protective tube 2042 is consistent with the setting direction of the cable 203. The length of the protective tube 2042 is less than the length of the cable 203. One end of the cable 203 is connected to the connecting column 202, and the other end of the cable 203 passes through the protective tube 2042 along the axial direction of the protective tube 2042 and is connected to the differential lock transmission shaft. The protective tube 2042 can protect the cable 203, which is beneficial to extending the service life of the cable 203 and enhancing the reliability of the cable transmission mechanism 2. Furthermore, when the cable 203 is a steel wire rope, the protective tube 2042 can effectively prevent the steel wire rope from being corroded and rusted under the influence of water or dust.

[0090] The protective tube assembly 204 also includes a first plug 2043 and a second plug 2044, which are respectively used to block the two ends of the protective tube 2042. The pull wire 203 passes through the first plug 2043 and the second plug 2044. The first plug 2043 and the second plug 2044 can further prevent dust and / or water from entering the interior of the protective tube 2042 and causing erosion to the pull wire 203.

[0091] In one embodiment of the present application, the differential lock device further includes:

[0092] The connecting plate 4 is provided on the differential lock shaft 1, and the cable transmission mechanism 2 is connected to the end of the connecting plate 4 away from the rotary drive member 3;

[0093] The pedal 5 is connected to one end of the connecting plate 4 close to the rotary drive member 3 and is used to apply force to one end of the connecting plate 4 to drive the differential lock shaft 1 to lock the differential lock.

[0094] Specifically, the setting direction of the connecting plate 4 is perpendicular to the axial direction of the differential lock shaft 1, and the middle position of the connecting plate 4 in the length direction is connected to the differential lock shaft 1. The wire 203 of the wire transmission mechanism 2 is connected to the end of the connecting plate 4 in the length direction away from the connecting column 202. When the wire 203 pulls the connecting plate 4, the end of the connecting plate 4 connected to the wire 203 deflects upward, thereby driving the differential lock shaft 1 to rotate around its own central axis to achieve the locking of the differential lock.

[0095] The pedal 5 in this embodiment includes a pedal portion 501 and a connecting rod portion 502, one end of the connecting rod portion 502 is connected to the pedal portion 501, and the other end of the connecting rod portion 502 is connected to an end of the connecting plate 4 close to the connecting column 202 of the cable transmission mechanism 2. The operator can apply a deflection force to the connecting plate 4 through the pedal 5 to deflect the end of the connecting plate 4 connected to the pedal 5 downward (at this time, the end of the connecting plate 4 connected to the cable 203 is deflected upward), and can also drive the differential lock locking shaft 1 to rotate around its own central axis to achieve the locking of the differential lock. The provision of the pedal 5 makes it easier for the operator to achieve the locking function of the differential lock when the rotating drive member 3 and / or the cable transmission mechanism 2 fails, further improving the reliability of the differential lock locking device and the engineering machinery.

[0096] Furthermore, when the differential lock device is provided with a pedal 5 and a connecting plate 4, the provision of the protective tube 2042 can also prevent the bottom end of the pedal 5 or the mounting plate 2011 from interfering with the pull wire 203, causing the pull wire 203 to be unable to perform the pulling action normally, thereby further improving the practicality of the pull wire transmission mechanism 2.

[0097] Another embodiment of the present application provides a mechanical device, which includes the differential lock device for the mechanical device according to the above embodiment.

[0098] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0099] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0101] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A differential lock device for mechanical equipment, characterized in that: The differential lock device comprises: A differential lock shaft (1) for connecting to a differential lock of a mechanical device and locking the differential lock; A wire transmission mechanism (2) is connected to the differential lock shaft (1) and is capable of converting rotary motion into linear motion to drive the differential lock shaft (1) to lock the differential lock; A rotary drive member (3) is drivingly connected to the wire-drawing transmission mechanism (2); The controller is in communication with the rotary drive member (3) and is used to control the rotary drive member (3) to drive the power input end of the wire-drawing transmission mechanism (2) to rotate.

2. The differential lock device according to claim 1, characterized in that: The differential lock device further includes: a lock detector, communicatively connected to the controller and used to detect whether the differential lock is in a locked state; A road condition detector, which is in communication with the controller and is used to detect whether the engineering machinery is in a road condition where it needs to be rescued; The controller is configured to: Determining that the engineering machinery is in a road condition requiring escape; Controlling the rotary drive member (3) to perform a first driving operation so that the wire transmission mechanism (2) drives the differential lock shaft (1) to rotate in a first preset direction; determining that the differential lock is in the locked state; The rotary driving member (3) is controlled to stop performing the first driving operation.

3. The differential lock device according to claim 2, characterized in that: The differential lock device further includes: an unlocking detector, communicatively connected to the controller and configured to detect whether the differential lock is in an unlocked state; The controller is further configured to: Determining that the engineering machinery has left the road condition to be rescued; controlling the rotary drive member (3) to perform a second driving operation so as to rotate the differential lock shaft (1) in a second preset direction, wherein the second preset direction is opposite to the first preset direction; determining that the differential lock is in the unlocked state; The rotary driving member (3) is controlled to stop performing the second driving operation.

4. The differential lock device according to claim 1, wherein: The wire-drawing transmission mechanism (2) comprises: A transmission assembly (201), wherein the rotary driving member (3) drives the transmission assembly (201) to rotate; A connecting column (202) is provided on the transmission assembly (201), wherein the central axis of the connecting column (202) is spaced apart from the rotation center of the transmission assembly (201); A pull wire (203), one end of the pull wire (203) is connected to the connecting column (202), and the other end of the pull wire (203) is connected to the differential lock shaft (1).

5. The differential lock device according to claim 4, characterized in that: The pull wire (203) is made of a flexible material.

6. The differential lock device according to claim 4, characterized in that: The transmission assembly (201) includes a mounting plate (2011) and a transmission plate (2012), the rotary drive member (3) is arranged on the mounting plate (2011), the transmission plate (2012) is rotatably arranged on the mounting plate (2011) and is drivingly connected to the rotary drive member (3), the connecting column (202) is arranged on the transmission plate (2012), and the pull wire (203) is connected to one end of the connecting column (202) away from the transmission plate (2012).

7. The differential lock device according to claim 6, characterized in that: A rotatable gear portion is formed at the driving end of the rotary drive member (3), and an engaging tooth portion (2013) for engaging with the gear portion is formed at the arc-shaped edge of the transmission plate (2012).

8. The differential lock device according to claim 6, characterized in that: The wire-drawing transmission mechanism (2) further comprises a protection tube assembly (204) arranged on the mounting plate (2011) and used for protecting the wire-drawing transmission mechanism (203).

9. The differential lock device according to any one of claims 1 to 8, characterized in that: The differential lock device further includes: A connecting plate (4) is provided on the differential lock shaft (1), and the wire transmission mechanism (2) is connected to an end of the connecting plate (4) away from the rotary drive member (3); A pedal (5) is connected to one end of the connecting plate (4) close to the rotary drive member (3) and is used to apply force to one end of the connecting plate (4) to drive the differential lock shaft (1) to lock the differential lock.

10. A mechanical device, characterized in that: The mechanical equipment includes the differential lock device for mechanical equipment according to any one of claims 1-9.

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