Rotary locking device, control system and engineering machinery

Abstract

The utility model relates to the field of engineering machinery, and discloses a rotation locking device, a control system and engineering machinery. The slewing locking device is used for locking a gear ring of a slewing bearing, and comprises a locking assembly, a rotating assembly and a locking assembly, and the locking assembly is provided with locking teeth capable of being meshed with the gear ring; the driving assembly can be fixed to one end of the slewing bearing and connected with the locking assembly so as to drive the locking teeth to move forwards or backwards in the radial direction of the gear ring. The control system comprises a controller which is electrically connected with a driving assembly and stores a control program; the control switch is used for starting the driving assembly; the position detection switch is used for triggering the stop driving assembly through the position of the locking assembly. The driving assembly drives the locking teeth to move in the radial direction of the gear ring of the slewing bearing, so that the locking teeth are gradually engaged with the gear ring under the guidance of the tooth surface; the rotary locking and the rotary unlocking are operated by one key through the control system, so that the problem that the rotary locking operation is complicated is solved, and the effects that the rotary locking operation is simple and convenient and the speed is high are achieved.

Description

Technical Field

[0001] The present application belongs to the field of engineering machinery, and specifically relates to a rotary locking device, a control system and engineering machinery. Background Art

[0002] Engineering machinery, such as cranes and excavators, is provided with an upper part and a lower part connected by a slewing bearing. During operation, the upper part performs a slewing motion relative to the lower part; and during driving, the upper part remains stationary relative to the lower part; then a slewing locking device is required to lock the slewing motion. At present, there is a slewing locking device, such as patent: CN214653211U-slewing locking device, working machinery slewing assembly and working machinery, which uses a hydraulic cylinder to drive the locking member to descend or ascend relative to the support frame, so that the limiting protrusion of the locking member engages with the outer edge tooth groove of the slewing bearing of the working machinery, thereby realizing the locking of the slewing motion of the working machinery. In the above-mentioned existing scheme, since the locking member rises or descends along the axial direction of the slewing bearing, if the slewing positioning angle of the working machinery is inaccurate, it is easy for the locking member to collide or abut the tooth groove edge, resulting in failure of the locking member to engage with the tooth groove, and the slewing positioning angle needs to be repeatedly adjusted to complete the slewing locking of the working machinery. Utility Model Content

[0003] The purpose of the present application is to provide a rotary locking device, a control system and engineering machinery, which are used to solve the problem of complicated rotary locking operation and achieve the effect of simple and fast rotary locking operation.

[0004] In order to achieve the above-mentioned purpose, the present application provides a slewing locking device for locking the gear ring of a slewing bearing, comprising:

[0005] a locking assembly, provided with locking teeth capable of engaging with the gear ring;

[0006] The driving assembly can be fixed to one end of the slewing bearing and connected to the locking assembly to drive the locking tooth to move forward or backward along the radial direction of the gear ring.

[0007] In some embodiments, the drive assembly includes a fixed seat, a motor, a lead screw and a nut seat; the motor is connected to the lead screw and installed together on the fixed seat; the nut seat is sleeved on the lead screw and connected to the locking assembly.

[0008] In some embodiments, the drive assembly further includes a coupling, and two ends of the coupling are respectively connected to an output end of the motor and one end of the lead screw.

[0009] In some embodiments, the drive assembly further includes a dust cover, which is fixed on the fixing seat and is disposed on the outside of the lead screw and the nut seat.

[0010] In some embodiments, the fixing seat includes a first fixing seat and a second fixing seat, the first fixing seat supports the motor and one end of the lead screw, and the second fixing seat supports the other end of the lead screw.

[0011] In some embodiments, the locking assembly further includes an extension plate, one end of which is connected to the nut seat, and the other end of which is connected to the locking tooth.

[0012] In some embodiments, a detection component for determining the position of the locking tooth is further included.

[0013] In some embodiments, the detection component includes a position detection switch and a switch bracket, the position detection switch is respectively located at a corresponding position when the locking component is locked and a corresponding position when the locking component is unlocked, and the switch bracket is used to fix the position detection switch.

[0014] A second aspect of the present application provides a control system using the above-mentioned rotary locking device, comprising:

[0015] A controller, electrically connected to the drive assembly and storing a control program;

[0016] A control switch, electrically connected to the controller, for starting the drive assembly;

[0017] The position detection switch is electrically connected to the controller and is used to trigger the stopping of the driving assembly according to the position of the locking assembly.

[0018] In some embodiments, it further includes a human-machine interaction interface electrically connected to the controller, and the human-machine interaction interface is provided with an icon for displaying whether the rotary locking device is locked.

[0019] The third aspect of the present application provides an engineering machinery, comprising a slewing bearing, an upper vehicle part, an lower vehicle part and the above-mentioned slewing locking device; the upper vehicle part and the lower vehicle part are connected through the slewing bearing; the slewing locking device is installed on the upper vehicle part or the lower vehicle part.

[0020] Compared with the prior art, the beneficial effects of this application are:

[0021] The rotary locking device of the present application drives the locking teeth to move radially along the gear ring of the rotary support through the driving assembly, so that the locking teeth are gradually engaged with the gear ring with the help of the guidance of the tooth surface, thereby completing the locking of the rotary support, solving the problem of complicated rotary locking operation, and achieving the effect of simple and fast rotary locking operation.

[0022] The control system of the present application starts the drive component through the control switch, and the position detection switch at the preset position automatically stops the drive component, thereby realizing one-key operation of rotational locking and rotational unlocking, thereby solving the problem of complicated rotational locking operation and achieving the effect of simple rotational locking operation.

[0023] 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

[0024] 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 ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0025] Figure 1 It is a schematic diagram of the application of the rotary locking device in the specific implementation manner of the present application.

[0026] Figure 2 It is a structural diagram of the rotary locking device in the specific implementation mode of this application.

[0027] Figure 3 This is a structural diagram of a rotary locking device with a dust cover in a specific implementation manner of the present application.

[0028] Figure 4 It is a top view of the rotary locking device in the specific implementation manner of the present application.

[0029] Figure 5 It is a side view of the rotation locking device in a specific embodiment of the present application.

[0030] Figure 6 This is an electrical schematic diagram of a control system according to a specific implementation scheme of this application.

[0031] Figure 7 This is a slew lock control flow chart of a specific implementation method of the present application.

[0032] Figure 8 This is a rotary unlocking control flow chart of a specific implementation method of this application.

[0033] Explanation of the reference numerals: locking assembly 1, locking tooth 11, extension plate 12, driving assembly 2, fixed seat 21, first fixed seat 211, second fixed seat 212, motor 22, screw 23, nut seat 24, coupling 25, dust cover 26, motor bracket 27, raising plate 28, detection assembly 3, position detection switch 31, switch bracket 32, slewing bearing 4, upper vehicle part 5, lower vehicle part 6. DETAILED DESCRIPTION

[0034] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0035] like Figures 1 to 5 As shown, a slewing locking device is used to lock the gear ring of the slewing support 4, comprising:

[0036] The locking assembly 1 is provided with a locking tooth 11 capable of engaging with the ring gear;

[0037] The driving assembly 2 can be fixed to one end of the slewing bearing 4 and connected to the locking assembly 1 to drive the locking tooth 11 to move forward or backward along the radial direction of the gear ring.

[0038] like Figure 1 As shown, a construction machinery comprises a slewing bearing 4, an upper vehicle part 5, an lower vehicle part 6 and a slewing locking device; the upper vehicle part 5 and the lower vehicle part 6 are connected via the slewing bearing 4; the slewing locking device is installed on the upper vehicle part 5 or the lower vehicle part 6.

[0039] In the present application, the slewing bearing 4 includes an inner ring and an outer ring that can rotate with each other, and a gear ring is provided on the inner ring or the outer ring. The driving component 2 is fixed to one end of the inner ring or one end of the outer ring of the slewing bearing 4 without the gear ring. The locking component 1 is fixed to the execution end of the driving component 2, and the execution end of the driving component 2 drives the locking tooth 11 of the locking component 1 to move forward or backward along the radial direction of the gear ring, so that the locking tooth 11 gradually meshes with the gear ring with the help of the guidance of the tooth surface, without the need to repeatedly rotate the gear ring to adjust to a precise positioning angle, thereby completing the locking of the slewing bearing 4, solving the problem of complicated slewing locking operation, and achieving the effect of simple and fast slewing locking operation.

[0040] In some embodiments, the inner ring of the slewing bearing 4 is fixed to the upper vehicle part 5, the outer ring of the slewing bearing 4 is fixed to the lower vehicle part 6, and the outer ring of the slewing bearing 4 is provided with a gear ring. The slewing locking device is fixed to the upper vehicle part 5, and the slewing locking device can rotate relative to the gear ring. When the slewing is locked, the driving assembly 2 drives the locking teeth 11 to move forward in the radial direction of the gear ring, and the locking teeth 11 and the gear ring are meshed with each other, thereby locking the slewing bearing 4, and the upper vehicle part 5 and the lower vehicle part 6 are locked. When the slewing is unlocked, on the contrary, the driving assembly 2 drives the locking teeth 11 to move backward in the radial direction of the gear ring.

[0041] Specifically, the driving assembly 2 includes a fixing seat 21, a motor 22, a lead screw 23 and a nut seat 24; the motor 22 is connected to the lead screw 23 and installed together on the fixing seat 21; the nut seat 24 is sleeved on the lead screw 23 and connected to the locking assembly 1. The motor 22 drives the lead screw 23 to rotate, thereby driving the nut seat 24 to move linearly along the lead screw 23, and the nut seat 24 is connected to the locking assembly 1 as an execution end, thereby realizing the forward or backward movement of the locking teeth 11 of the locking assembly 1.

[0042] Furthermore, the driving assembly 2 further includes a coupling 25, and two ends of the coupling 25 are respectively connected to the output end of the motor 22 and one end of the lead screw 23. The coupling 25 is used for power coupling between the motor 22 and the lead screw 23.

[0043] Further, the drive assembly 2 further includes a dust cover 26, which is fixed on the fixing seat 21 and is arranged outside the lead screw 23 and the nut seat 24. The dust cover 26 is used to prevent dust and foreign matter from falling and affecting the transmission between the lead screw 23 and the nut seat 24.

[0044] Furthermore, the fixing seat 21 includes a first fixing seat 211 and a second fixing seat 212 . The first fixing seat 211 supports the motor 22 and one end of the lead screw 23 , and the second fixing seat 212 supports the other end of the lead screw 23 .

[0045] Furthermore, the locking assembly 1 further comprises an extension plate 12 , one end of which is connected to the nut seat 24 , and the other end of which is connected to the locking tooth 11 .

[0046] In some embodiments, the first fixed seat 211 and the second fixed seat 212 are fixed to the upper vehicle part 5 by fasteners and a spacer plate 28. One end of the motor 22 is fixed to the side of the first fixed seat 211 by a fastener, and the other end of the motor 22 is fixed to the upper vehicle part 5 by a fastener and a motor bracket 27. The axis of the lead screw 23 is parallel to the slewing bearing 4, and its two ends are respectively mounted on the first fixed seat 211 and the second fixed seat 212 through bearings. One end of the lead screw 23 passes through the first fixed seat 211 and is connected to the output end of the motor 22 through the coupling 25. The lead screw 23 is a ball screw 23, and the nut seat 24 is a ball nut seat 24. The two ends of the dust cover 26 are respectively fastened to the first fixed seat 211 and the second fixed seat 212, and its length covers the output end of the motor 22, the coupling 25, the lead screw 23 and the nut seat 24.

[0047] In some embodiments, the locking tooth 11 is a rack with two teeth, and its tooth profile parameters are the same as the tooth profile parameters of the gear ring of the slewing bearing 4 to ensure that the two can mesh normally. The locking tooth 11 is located on one side of the driving component 2 and on the outside of the gear ring. One end of the two extension plates 12 clamps the side of the locking tooth 11, and the other end is fastened to the side of the nut seat 24.

[0048] Optionally (not shown in the figure), the driving assembly includes a fixed seat and a cylinder. The fixed seat is fastened to the upper vehicle component, and the axis of the cylinder is parallel to the slewing bearing and fastened to the fixed seat. The end of the piston rod of the cylinder is hinged to the locking assembly. The piston rod of the cylinder extends or retracts, driving the locking teeth of the locking assembly to move forward or backward along the radial direction of the slewing bearing gear ring.

[0049] Optionally (not shown in the figure), the driving assembly includes a fixed seat, a motor, a driving gear, a driving rack and a guide rail. The fixed seat is fastened to the upper vehicle component. The motor is fastened to the fixed seat, and the output shaft of the motor is mounted with the driving gear. The driving rack is parallel to the slewing bearing and is mounted on the fixed seat through the guide rail. The driving gear and the driving rack are meshed with each other. The motor drives the driving gear to rotate, thereby driving the driving rack to move linearly on the fixed seat, and the driving rack is connected to the locking assembly, thereby realizing the forward or backward movement of the locking teeth of the locking assembly.

[0050] Specifically, it also includes a detection component 3 for determining the position of the locking tooth 11. The detection component 3 can be used as a monitoring signal to remind the user that the slewing locking device is in a locked state or an unlocked state; on the other hand, it can be used as a control signal to control the driving component 2 to automatically stop after the locking tooth 11 and the gear ring are engaged; or in the locked state, cut off the slewing power of the upper vehicle component 5 to prevent the user from erroneously operating the slewing and damaging the slewing locking device.

[0051] Furthermore, the detection component 3 includes a position detection switch 31 and a switch bracket 32 ​​. The position detection switch 31 is located at a corresponding position when the locking component 1 is locked and a corresponding position when it is unlocked, respectively. The switch bracket 32 ​​is used to fix the position detection switch 31 .

[0052] In some embodiments, the position detection switch 31 is a proximity switch, which is fastened to the boarding part 5 through a switch bracket 32. The position detection switch 31 realizes signal triggering through the blocking of the extension plate 12 of the locking assembly 1, and the two position detection switches 31 are respectively located at the position when the extension plate 12 is locked and the position when it is unlocked. When the position detection switch 31 detects that the extension plate 12 reaches the locked position or the unlocked position, it can automatically cut off the operation of the motor 22 to prevent the motor 22 from being blocked. In addition, when the position detection switch 31 detects that the extension plate 12 is in the locked position, it can send a signal to the boarding part 5 to cut off the rotation action of the boarding part 5, thereby preventing the boarding part 5 from rotating by mistake and damaging the rotation locking device.

[0053] Optionally (not shown in the figure), the detection component is a rotary encoder of the motor in the driving component, and the detection component obtains the rotation angle of the motor and then obtains the position of the locking tooth through transmission calculation.

[0054] Optionally (not shown in the figure), the detection component is a travel switch, and the detection component realizes signal triggering through the pushing of the locking tooth, thereby obtaining the position of the locking tooth.

[0055] like Figure 6 As shown, a control system using the above-mentioned rotary locking device comprises:

[0056] A controller, electrically connected to the drive assembly 2 and storing a control program;

[0057] A control switch, electrically connected to the controller, for starting the drive assembly 2;

[0058] The position detection switch 31 is electrically connected to the controller and is used to trigger the stopping of the driving component 2 by locking the position of the component 1 .

[0059] In the present application, the drive assembly 2 can be started and stopped by electric control. The control switch and the position detection switch 31 are connected to the input end of the controller. When the rotation is locked, after pressing the control switch, the controller starts the drive assembly 2, and the drive assembly 2 drives the locking tooth 11 to move forward or backward along the radial direction of the ring gear; after the locking tooth 11 is engaged with the ring gear, the locking assembly 1 triggers the position detection switch 31, and the controller stops the drive assembly 2 to complete the locking of the slewing bearing 4. When the rotation is unlocked, after pressing the control switch again, the controller starts the drive assembly 2, drives the locking tooth 11 to move in the opposite direction; after the locking tooth 11 is separated from the ring gear, the locking assembly 1 triggers the position detection switch 31 again, and the controller stops the drive assembly 2 to complete the unlocking of the slewing bearing 4. The present application uses the control program of the controller to start the drive assembly 2 using the control switch, and the position detection switch 31 at the preset position automatically stops the drive assembly 2, so as to realize the one-button operation of rotation locking and rotation unlocking, thereby solving the problem of complicated rotation locking operation and achieving the effect of simple rotation locking operation.

[0060] Specifically, the control system also includes a human-machine interaction interface electrically connected to the controller, and the human-machine interaction interface is provided with an icon for displaying whether the rotary locking device is locked.

[0061] In some embodiments, the input end of the controller is electrically connected to the control switch and the position detection switch 31, wherein the control switch includes a lock switch S3 and an unlock switch S4, and the position detection switch 31 includes a lock detection switch S1 and an unlock detection switch S2. The output end of the controller is electrically connected to the motor 22 of the drive assembly 2 through a relay group, wherein the coil of the relay group is electrically connected to the output end of the controller, and the switch contact of the relay group is electrically connected to the drive circuit of the motor 22. In addition, the output end of the controller is electrically connected to the human-machine interaction interface and the electromagnetic valve for controlling the rotation action of the vehicle component 5. The icons include a lock icon and an unlock icon.

[0062] In some embodiments, the control principle of the control system is as follows:

[0063] like Figure 7 As shown, when the lock switch S3 is pressed and the unlock detection switch S2 is turned on, the controller turns on the relay KA1 and the relay KA2, the motor 22 rotates forward, and the nut seat 24 drives the locking tooth 11 to move forward radially along the gear ring of the slewing bearing 4, and the locking tooth 11 gradually engages with the gear ring. When the engagement is completed, the extension plate 12 blocks the lock detection switch S1 to turn it on, the lock icon in the human-machine interface lights up, the controller disconnects the relay KA1 and the relay KA2, the motor 22 stops, and the slewing bearing 4 is locked; the controller disconnects the solenoid valve Y1 and the solenoid valve Y2, the rotation power of the upper vehicle part 5 is cut off, and the upper vehicle part 5 remains stationary relative to the lower vehicle part 6.

[0064] like Figure 8 As shown, when the unlocking switch S4 is pressed and the locking detection switch S1 is turned on, the controller turns on the relays KA3 and KA4, the motor 22 reverses, and the nut seat 24 drives the locking tooth 11 to retreat radially along the gear ring of the slewing bearing 4, and the locking tooth 11 gradually separates from the gear ring. When the separation is completed, the extension plate 12 blocks the unlocking detection switch S2, turning it on, and the unlocking icon in the human-machine interface lights up. The controller disconnects the relays KA3 and KA4, the motor 22 stops, and the slewing bearing 4 is unlocked; the controller turns on the solenoid valves Y1 and Y2, and the rotation power of the upper vehicle part 5 is turned on, and the upper vehicle part 5 can rotate relative to the lower vehicle part 6.

[0065] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] 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 slewing locking device for locking the gear ring of a slewing bearing (4), characterized in that: include: A locking assembly (1) provided with locking teeth (11) capable of meshing with the gear ring; The driving assembly (2) can be fixed to one end of the slewing bearing (4) and connected to the locking assembly (1) to drive the locking tooth (11) to move forward or backward along the radial direction of the gear ring.

2. The rotary locking device according to claim 1, characterized in that: The driving assembly (2) comprises a fixing seat (21), a motor (22), a lead screw (23) and a nut seat (24); the motor (22) is connected to the lead screw (23) and installed on the fixing seat (21); the nut seat (24) is sleeved on the lead screw (23) and connected to the locking assembly (1).

3. The rotary locking device according to claim 2, characterized in that: The driving assembly (2) further comprises a coupling (25), the two ends of which are respectively connected to the output end of the motor (22) and one end of the lead screw (23).

4. The rotary locking device according to claim 2, characterized in that: The driving assembly (2) further comprises a dust cover (26), wherein the dust cover (26) is fixed on the fixing seat (21) and is arranged on the outside of the lead screw (23) and the nut seat (24).

5. The rotary locking device according to claim 2, characterized in that: The locking assembly (1) further comprises an extension plate (12), one end of the extension plate (12) being connected to the nut seat (24) and the other end of the extension plate (12) being connected to the locking tooth (11).

6. The rotary locking device according to any one of claims 1 to 5, characterized in that: It also comprises a detection component (3) for determining the position of the locking tooth (11).

7. The rotary locking device according to claim 6, characterized in that: The detection component (3) comprises a position detection switch (31) and a switch bracket (32); the position detection switch (31) is respectively located at a corresponding position when the locking component (1) is locked and a corresponding position when the locking component (1) is unlocked; and the switch bracket (32) is used to fix the position detection switch (31).

8. A control system using the rotary locking device according to any one of claims 1 to 5, characterized in that: include: A controller, electrically connected to the drive assembly (2) and storing a control program; A control switch, electrically connected to the controller, for starting the drive assembly (2); A position detection switch (31) is electrically connected to the controller and is used to trigger the stopping of the driving component (2) according to the position of the locking component (1).

9. The control system according to claim 8, characterized in that: It also includes a human-machine interaction interface electrically connected to the controller, and the human-machine interaction interface is provided with an icon for displaying whether the rotary locking device is locked.

10. An engineering machine, characterized in that: It comprises a slewing bearing (4), an upper vehicle part (5), an lower vehicle part (6) and a slewing locking device as claimed in any one of claims 1 to 7; the upper vehicle part (5) and the lower vehicle part (6) are connected via the slewing bearing (4); and the slewing locking device is installed on the upper vehicle part (5) or the lower vehicle part (6).

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