Counterweight shifting device and operating machinery

Abstract

This invention relates to the field of engineering machinery technology, providing a counterweight positioning device and a working machine, including a lug plate, a first drive mechanism, a first detection element for detecting the horizontal position of the lug plate, a sliding plate for supporting the counterweight, a lifting drive mechanism, and a controller. The lug plate is slidably connected to the winch box of the working machine and is used to connect the counterweight. The first drive mechanism drives the lug plate to move horizontally in a direction close to or away from the turntable of the working machine. The second drive mechanism drives the sliding plate to move, and the sliding plate moves along the same path as the lug plate. The lifting drive mechanism is mounted on the frame of the working machine and is used to drive the sliding plate to lift and lower. The controller controls the first and second drive mechanisms to stop according to the detection signal of the first detection element, so that the horizontal positions of the lug plate and the counterweight are matched. This achieves accurate alignment between the counterweight and the lug plate. The lifting drive mechanism, mounted on the frame, can transfer the weight of the counterweight to the frame without oil circuit wear.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a counterweight displacement device and working machinery. Background Technology

[0002] The counterweight of construction machinery is installed at the lower end of the turntable winch box to maintain the overall torque balance and prevent the machinery from tipping over. Currently, the position of the counterweight on the winch box is relatively fixed. However, this fixed position limits the improvement of the lifting performance of construction machinery. Construction machinery requires a large anti-tipping moment, which can only be achieved by increasing the weight of the counterweight. This not only increases costs but also increases the overall weight of the vehicle, making the construction machinery unsuitable for road use.

[0003] Therefore, in existing technologies, the stability of the entire machine is improved by adjusting the position of the counterweight. For example, in one method, the counterweight can be moved by adjusting the position of the lugs on the winch box, and then lifted to the position of the lugs to connect the counterweight and the lugs, thus adjusting the position of the counterweight. However, in this method, it is not easy to align the counterweight with the lugs or lifting cylinders, requiring multiple adjustments to the counterweight's position. Due to the large weight of the counterweight, it is difficult to move and inconvenient to operate. Alternatively, in another method, the counterweight is directly connected to a displacement drive component such as a hydraulic cylinder, and the counterweight is moved by extending or retracting the cylinder, thus adjusting the position of the counterweight. However, due to the large weight of the counterweight, the hydraulic cylinder may be subjected to excessive force, leading to malfunctions and making it impossible to adjust the position of the counterweight. Furthermore, placing the lifting cylinder or other drive components on the winch box requires the installation of hydraulic circuits on the winch box to control them. During the rotation of the winch box, the hydraulic circuits are prone to wear, rendering the hydraulic cylinder or other drive components unusable and preventing the counterweight from being displaced. Therefore, the existing methods of improving the stability of the whole machine by adjusting the position of the counterweight have problems such as difficulty in aligning the counterweight with the hanging ear, inconvenient operation, or easy failure of the displacement drive component, which makes it impossible to achieve counterweight displacement. Summary of the Invention

[0004] This invention provides a counterweight displacement device and a working machine to solve the defects in the existing technology of improving the stability of the whole machine by adjusting the position of the counterweight, which are difficult to align with the counterweight and the hanging lug, inconvenient to operate, or prone to failure of the displacement drive component, thus failing to achieve counterweight displacement.

[0005] This invention provides a counterweight displacement device, comprising:

[0006] Ear plates are slidably connected to the winch box of the operating machinery, and the ear plates are used to connect the counterweight;

[0007] The first drive mechanism is used to drive the ear plate to move horizontally in a direction that is closer to or farther from the turntable of the working machine;

[0008] The first detection element is used to detect the horizontal position of the ear plate;

[0009] A sliding plate is used to support the counterweight;

[0010] The second driving mechanism is used to drive the sliding plate to move, and the moving path of the sliding plate is consistent with the moving path of the ear plate;

[0011] A lifting drive mechanism is mounted on the frame of the operating machinery and is used to drive the sliding plate to lift.

[0012] The controller is communicatively connected to the first drive mechanism, the first detection element, and the second drive mechanism. The controller controls the first drive mechanism and the second drive mechanism to stop according to the detection signal of the first detection element, so that the horizontal positions of the ear plate and the counterweight are matched.

[0013] According to the present invention, a counterweight displacement device is provided, wherein the lifting drive mechanism comprises:

[0014] A support plate, wherein the sliding plate is slidably connected to the support plate;

[0015] A lifting drive component is mounted on the vehicle frame and is used to drive the support plate to rise and fall.

[0016] The counterweight displacement device provided by the present invention further includes:

[0017] The brake is communicatively connected to the controller, which controls the brake to operate based on the detection signal from the first detection element, so that the sliding plate is fixed relative to the support plate.

[0018] According to the present invention, a counterweight displacement device is provided, wherein the brake comprises:

[0019] A friction plate is disposed on one of the support plate and the sliding plate;

[0020] A piston is disposed on the other of the support plate and the sliding plate;

[0021] A brake drive assembly is used to drive the piston closer to or away from the friction plate. The brake drive assembly is communicatively connected to the controller. The controller controls the brake drive assembly to operate according to the detection signal of the first detection element, so that the piston contacts the friction plate.

[0022] According to the present invention, a counterweight displacement device is provided, wherein the braking drive assembly includes:

[0023] A linear drive is used to drive the piston to move between a first vertical position and a second vertical position, wherein:

[0024] When the piston is in the first vertical position, there is a gap between the piston and the friction plate; when the piston is in the second vertical position, the piston is in contact with the friction plate.

[0025] According to a counterweight displacement device provided by the present invention, the braking drive assembly further includes:

[0026] An elastic element, the two ends of which are respectively connected to or abut against the sliding plate and the piston, wherein:

[0027] When the piston is in the first vertical position, the elastic element is in a compressed state;

[0028] When the piston is in the second vertical position, the elastic element is in the extended state and the piston is pressed against the friction plate.

[0029] According to the present invention, a counterweight displacement device is provided, wherein the first driving mechanism comprises:

[0030] A screw is mounted on the winch box, and the ear plate is threadedly connected to the screw.

[0031] A drive motor is used to drive the screw to rotate, and the first detection element is used to detect the number of rotations of the drive motor.

[0032] According to a counterweight displacement device provided by the present invention, a roller is provided between the support plate and the sliding plate.

[0033] According to a counterweight displacement device provided by the present invention, a first limiting plate and a second limiting plate are respectively provided at both ends of the support plate, and the first limiting plate and the second limiting plate are used to block the sliding plate.

[0034] The present invention also provides a working machine, including a counterweight displacement device as described in any one of the above claims.

[0035] The present invention provides a counterweight positioning device and a working machine. The counterweight positioning device includes a lug plate, a first drive mechanism, a first detection element, a sliding plate, a second drive mechanism, a lifting drive mechanism, and a controller. The lug plate is slidably connected to the winch box of the working machine and can be used to connect the counterweight. The first drive mechanism drives the lug plate to move horizontally in a direction close to or away from the turntable of the working machine. The first detection element detects the horizontal position of the lug plate. The sliding plate supports the counterweight. The second drive mechanism drives the sliding plate to move, and the movement path of the sliding plate is consistent with the movement path of the lug plate, so that the horizontal positions of the counterweight and the lug plate are matched. The lifting drive mechanism is mounted on the frame of the working machine and can drive the sliding plate to rise and fall, thereby enabling the counterweight to rise and fall. The controller is communicatively connected to the first drive mechanism, the first detection element, and the second drive mechanism. Furthermore, the controller controls the first and second drive mechanisms to stop according to the detection signal of the first detection element, so that the lug plate and the counterweight stop moving, thereby matching the horizontal positions of the lug plate and the counterweight, allowing the lug plate and the counterweight to be accurately aligned.

[0036] With this configuration, the movement position of the ear plate can be detected in real time by the first detection element. The controller can control the start and stop of the first drive mechanism based on the detection signal of the first detection element, ensuring that the ear plate is fixed in the required position. It can also control the start and stop of the second drive mechanism to ensure that the counterweight can stop at a horizontal position relative to the ear plate, so that the counterweight can be accurately aligned with the ear plate. Furthermore, the lifting drive mechanism drives the sliding plate to lift and lower, which can realize the lifting and lowering of the counterweight, allowing the counterweight to be moved to a height that can connect with the ear plate, achieving accurate alignment between the counterweight and the ear plate. In addition, the lifting drive mechanism is set on the frame of the working machine. On the one hand, it can transfer part of the weight of the counterweight to the frame. On the other hand, it does not need to rotate synchronously with the winch box, eliminating the problem of oil circuit wear, etc. The lifting drive mechanism is less prone to failure, thus improving its service life. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a diagram showing the positional relationship of the counterweight displacement device provided by this invention on the working machinery;

[0039] Figure 2 This is a schematic diagram (after displacement) of the ear plate and counterweight provided by the present invention after connection;

[0040] Figure 3This is a perspective view of the connection relationship between the lifting drive mechanism and the sliding plate provided by the present invention;

[0041] Figure 4 This is one of the cross-sectional views showing the connection between the lifting drive mechanism and the sliding plate provided by the present invention;

[0042] Figure 5 This is the second cross-sectional view of the connection between the lifting drive mechanism and the sliding plate provided by the present invention.

[0043] Figure label:

[0044] 1. Frame; 2. Winch box; 3. Counterweight;

[0045] 4. Ear plate; 5. Screw; 6. Transmission component connecting plate;

[0046] 7. Lifting drive components; 8. Sliding plate; 9. Support plate;

[0047] 10. Positioning bolt; 11. First limiting plate; 12. Second limiting plate;

[0048] 13. Buffer component; 14. Friction plate; 15. Piston;

[0049] 16. Pin; 17. Elastic element; 18. Limiting baffle;

[0050] 19. Roller. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0052] The following is combined with Figures 1 to 5 The present invention describes the counterweight displacement device and the working machinery.

[0053] like Figure 1 As shown, the counterweight displacement device provided by the present invention may include an ear plate 4, a first driving mechanism, a first detection element, a sliding plate 8, a second driving mechanism, a lifting driving mechanism, and a controller.

[0054] The ear plate 4 can be slidably connected to the winch box 2 of the working machinery, and the ear plate 4 can be used to connect the counterweight 3.

[0055] The first drive mechanism can be used to drive the ear plate 4 to move horizontally in the direction of approaching or moving away from the turntable of the operating machinery.

[0056] The first detection element can be used to detect the horizontal position of the ear plate 4, so that the operator can adjust the horizontal position of the ear plate 4.

[0057] The sliding plate 8 can be used to support the counterweight 3, and the second drive mechanism can be used to drive the sliding plate 8 to move. Here, the movement path of the sliding plate 8 can be consistent with the movement path of the ear plate 4. In this way, the horizontal positions of the counterweight 3 and the ear plate 4 can be matched so that the counterweight 3 and the ear plate 4 can be accurately aligned.

[0058] The lifting drive mechanism can be mounted on the frame 1 of the working machinery, and the lifting drive mechanism can drive the sliding plate 8 to rise and fall, so as to raise and lower the counterweight 3. In this way, the counterweight 3 can be lifted by the lifting drive mechanism so that the counterweight 3 can be connected to the ear plate 4, and thus connected to the winch box 2.

[0059] The controller can communicate with the first drive mechanism, the first detection element, and the second drive mechanism respectively. Furthermore, the controller can control the first and second drive mechanisms to stop based on the detection signal from the first detection element, thereby stopping the movement of the ear plate 4 and the counterweight 3, thus ensuring that the horizontal positions of the ear plate 4 and the counterweight 3 are matched and accurately aligned.

[0060] With this configuration, the movement position of the ear plate 4 can be detected in real time by the first detection element. The controller can control the start and stop of the first drive mechanism based on the detection signal of the first detection element, which can ensure that the ear plate 4 is fixed in the required position. It can also control the start and stop of the second drive mechanism to ensure that the counterweight 3 can stop at a horizontal position relative to the ear plate 4, so that the counterweight 3 can be accurately aligned with the ear plate 4. Furthermore, the lifting drive mechanism drives the sliding plate 8 to lift and lower, which can realize the lifting and lowering of the counterweight 3, so that the counterweight 3 can be moved to a height that can be connected with the ear plate 4, thus achieving accurate alignment between the counterweight 3 and the ear plate 4. In addition, the lifting drive mechanism is set on the frame 1 of the working machinery. On the one hand, it can transfer part of the weight of the counterweight 3 to the frame 1. On the other hand, it does not need to rotate synchronously with the winch box 2, so there is no wear and tear on the oil circuit. The lifting drive mechanism is less prone to failure and its service life is improved.

[0061] In an optional embodiment, the counterweight displacement device may include two ear plates 4 and two first drive mechanisms. The two ear plates 4 may be slidably disposed on both sides of the winch box, and the two first drive mechanisms drive the two ear plates 4 to move respectively.

[0062] In an optional embodiment, the counterweight displacement device may further include a position input module, which is communicatively connected to the controller. The operator can input the preset position that the ear plate 4 needs to reach through the position input module. The controller determines whether the ear plate 4 has moved to the preset position based on the detection signal of the first detection element, and controls the first drive mechanism and the second drive mechanism based on the determination result.

[0063] Here, the controller includes a comparison module, which is used to compare the input preset position with the position detected by the first detection element. When the comparison module determines that the position of the ear plate 4 detected by the first detection element is consistent with the preset position, the controller controls the first drive mechanism to stop, so that the ear plate 4 is fixed in the preset position, and controls the second drive mechanism to stop, so that the sliding plate 8 is fixed in a position opposite to the preset position, so that the counterweight 3 and the ear plate 4 can be accurately aligned.

[0064] In this way, the counterweight 3 can be adjusted to any horizontal position, and the counterweight 3 and the ear plate 4 can be accurately aligned.

[0065] In an optional embodiment of the present invention, the counterweight displacement device may further include a second detection element, which can be used to detect the horizontal position of the sliding plate 8. The second detection element can be communicatively connected to the controller, and the controller can control the start and stop of the second drive mechanism according to the detection signal of the second detection element to adjust the position of the sliding plate 8, that is, adjust the horizontal position of the counterweight 3.

[0066] Specifically, when the horizontal position of the sliding plate 8 detected by the second detection element matches the horizontal position of the ear plate 4 detected by the first detection element, the controller controls the second drive mechanism to stop, so that the sliding plate 8 stops moving, thereby stopping the counterweight 3 from moving. In this way, by detecting the position of the sliding plate 8 through the second detection element, it is possible to avoid the counterweight 3 moving too much or too little and failing to align with the ear plate 4, which can ensure that the counterweight 3 on the sliding plate 8 is accurately aligned with the ear plate 4, improve the alignment accuracy, and thus facilitate the accurate connection of the counterweight 3 to the ear plate 4.

[0067] In an optional embodiment of the present invention, the lifting drive mechanism may include a support plate 9 and a lifting drive component 7. A sliding plate 8 may be slidably connected to the support plate 9. The lifting drive component 7 may be mounted on the frame 1 of the working machinery and may be used to drive the support plate 9 to lift, thereby driving the sliding plate 8 to lift, and thus driving the counterweight 3 to lift. In this way, both the horizontal and vertical positions of the counterweight 3 can be adjusted.

[0068] In this embodiment, the lifting drive 7 can be a hydraulic cylinder, a pneumatic cylinder, or a linear actuator.

[0069] In an optional embodiment, the lifting drive mechanism may include at least two lifting drive components 7, which are evenly distributed below the support plate 9. This improves the stability of the counterweight 3 during lifting and reduces the external force on each lifting drive component 7, thus extending its service life.

[0070] In an optional embodiment of the present invention, the counterweight displacement device may further include a brake, which can be communicatively connected to a controller. The controller can control the brake to operate according to the detection signal of the first detection element, so as to fix the sliding plate 8 and the support plate 9 relative to each other. In this way, the sliding plate 8 can be further stopped from moving, thereby stopping the counterweight 3 from moving, so as to ensure that the counterweight 3 can be accurately aligned with the ear plate 4.

[0071] In this embodiment, when the horizontal position of the sliding plate 8 detected by the second detection element is consistent with the horizontal position of the ear plate 4 detected by the first detection element, the controller controls the brake to operate, so that the sliding plate 8 and the support plate 9 are relatively fixed.

[0072] In an optional embodiment, the brake may include a friction plate 14, a piston 15, and a brake drive assembly. The friction plate 14 may be disposed on one of the support plate 9 and the sliding plate 8, and the piston 15 may be disposed on the other of the support plate 9 and the sliding plate 8. The brake drive assembly may be used to drive the piston 15 to move closer to or away from the friction plate 14, and the brake drive assembly may be communicatively connected to a controller. The controller may control the brake drive assembly to operate according to the detection signal of the first detection element, so that the piston 15 contacts the friction plate 14, thereby braking the sliding plate 8 and stopping the counterweight 3 at the desired position.

[0073] In an optional embodiment, the brake drive assembly may include a linear drive member that can drive the piston 15 to move between a first vertical position and a second vertical position.

[0074] When the piston 15 is in the first vertical position, there is a gap between the piston 15 and the friction plate 14. At this time, the brake will not have a braking effect on the sliding plate 8.

[0075] When piston 15 is in the second vertical position, piston 15 is in contact with friction plate 14. At this time, the brake can brake the sliding plate 8.

[0076] In an optional embodiment, the brake drive assembly may further include an elastic element 17, the two ends of which may be connected to or abut against the sliding plate 8 and the piston 15, respectively.

[0077] When the piston 15 is in the first vertical position, the elastic element 17 is in a compressed state. At this time, the elastic element 17 does not exert a squeezing effect on the piston 15.

[0078] When the piston 15 is in the second vertical position, the elastic element 17 is in the deployed state, and the elastic element 17 can press the piston 15 against the friction plate 14. This increases the friction between the piston 15 and the friction plate 14, thereby improving braking performance and allowing the counterweight 3 to stop quickly and accurately at the required position, which is beneficial to improving the accuracy of the alignment between the counterweight 3 and the ear plate 4; and by using the elastic element 17 to achieve relative braking between the piston 15 and the friction plate 14, it can prevent the counterweight 3 from having excessive inertia, which could cause excessive force on the linear drive component and damage.

[0079] In an optional embodiment, the linear drive can be connected to the piston 15 via a pin 16. Specifically, the piston 15 may be provided with a groove, the bottom end of the pin 16 is located in the groove and engages with the piston 15, and the top end of the pin 16 can be connected to the linear drive. In this way, the linear drive can achieve the vertical movement of the piston 15 by driving the pin 16 to move vertically.

[0080] Here, the linear drive component can be a linear motor. The elastic component 17 is a spring.

[0081] In an optional embodiment, the piston 15 may be provided with an elastic element mounting groove, the elastic element is located in the elastic element mounting groove, the groove opening of the elastic element 17 mounting groove is provided facing the sliding plate 8, and the bottom end of the elastic element 17 may be connected to or abut against the bottom of the elastic element mounting groove.

[0082] In this embodiment, the brake drive assembly may include at least two elastic elements 17, each elastic element 17 being distributed around the pin 16. This can improve both the braking performance of the brake and the stability of the piston 15 movement.

[0083] In an optional embodiment, two limiting baffles 18 may be provided at the bottom end of the sliding plate 8, and the piston 15 may be located between the two limiting baffles 18, and the piston 15 may be slidably connected to the limiting baffles 18. In this way, the two limiting baffles 18 can restrict the piston 15, so that the piston 15 can move up and down and avoid deviation.

[0084] In an optional embodiment of the present invention, the first driving mechanism may include a screw 5 and a drive motor. The screw 5 may be mounted on the winch box 2, and the ear plate 4 may be threadedly connected to the screw 5. The ear plate 4 can be moved by rotating the screw 5. The drive motor can be used to drive the screw 5 to rotate, thereby enabling the ear plate 4 to move.

[0085] Here, the first detection element can be used to detect the number of rotations of the drive motor, so as to calculate the travel of the ear plate 4 based on the number of rotations of the drive motor, thereby determining the horizontal position of the ear plate 4.

[0086] Specifically, the first detection element can be a motor speed measuring instrument, which determines the travel distance of the ear plate 4 by measuring the speed of the drive motor.

[0087] In an optional embodiment, the first drive mechanism may further include two transmission component connecting plates 6, which are respectively disposed at the first end and the second end of the winch box 2, and the two ends of the screw 5 may be rotatably disposed on the two transmission component connecting plates 6 via bearings.

[0088] Here, the first end of the winch box 2 can be the end closer to the turntable, and the second end of the winch box 2 can be the end farther away from the turntable.

[0089] In an optional embodiment of the present invention, a first limiting plate 11 and a second limiting plate 12 may be provided at both ends of the support plate 9. The first limiting plate 11 and the second limiting plate 12 can be used to block the sliding plate 8 to prevent the sliding plate 8 from slipping off during the sliding process.

[0090] Specifically, a first limiting plate 11 may be provided at the first end of the support plate 9, and a second limiting plate 12 may be provided at the second end of the support plate 9.

[0091] In an optional embodiment, a buffer 13 may be provided on the end face of the second limiting plate 12 facing the first limiting plate 11. When the counterweight 3 moves to the first limiting plate 11, the buffer 13 can make the counterweight 3 stop smoothly and prevent impact.

[0092] In an optional embodiment, the second detection element may be disposed on the end face of the second limiting plate 12 facing the first limiting plate 11, so as to detect the horizontal position of the sliding plate 8.

[0093] Here, the second detection element can be a distance sensor, which can be used to detect the distance between the sliding plate 8 and the second limiting plate 12, so as to determine the horizontal position of the sliding plate 8 based on the change in the distance between the sliding plate 8 and the second limiting plate 12, thereby determining the horizontal position of the counterweight 3.

[0094] In an optional embodiment, the second drive mechanism may be disposed on the first limiting plate 11, and the second drive mechanism may be a pneumatic cylinder, hydraulic cylinder, electric cylinder, or linear actuator.

[0095] In an optional embodiment of the present invention, a roller 19 may be provided between the sliding plate 8 and the support plate 9, which can realize the sliding connection between the sliding plate 8 and the support plate 9, and reduce the friction between the sliding plate 8 and the support plate 9, making the sliding plate 8 move more smoothly and the horizontal position of the counterweight 3 easier to adjust.

[0096] Here, the roller 19 can be rotatably mounted below the sliding plate 8 via the connecting frame, so as to drive the sliding plate 8 to move along the support plate 9.

[0097] In an optional embodiment of the present invention, the counterweight displacement device may further include a first fixing member for locking the ear plate 4, the first fixing member being used to fix the ear plate 4 and the winch box 2.

[0098] Specifically, at least one fixing hole may be provided on the ear plate 4, and the first fixing member can pass through the fixing hole and be connected to the winch box 2.

[0099] Here, the first fixing element can be a bolt, which passes through the fixing hole and can be threaded to the winch box 2. In this way, when the ear plate 4 is moved to the desired position, it can be fixed to the winch box 2 by the bolt, which helps to improve the stability of the counterweight 3.

[0100] In an optional embodiment of the present invention, the ear plate 4 may be provided with a plurality of pin holes, which may be distributed along the vertical direction.

[0101] Here, the counterweight displacement device may also include a second fixing member, which can be used to connect the counterweight 3 and the pin hole so that the counterweight 3 can be installed on the ear plate 4.

[0102] Specifically, by connecting the second fixing member with pin holes at different positions, the vertical position of the counterweight 3 can be adjusted to adjust the height of the counterweight 3, thereby achieving the purpose of displacement.

[0103] In an optional embodiment, the counterweight displacement device may further include a vertical position detection element, which can be used to detect the vertical position of the counterweight 3, and the vertical position detection element can be communicatively connected to a controller. The controller can control the start and stop of the lifting drive mechanism according to the detection signal of the vertical position detection element, thereby adjusting the vertical position of the counterweight 3.

[0104] Here, the vertical position detection element can be a distance sensor, which can be installed on the frame 1 of the working machinery. The distance sensor can detect the vertical movement distance of the support plate 9.

[0105] In an optional embodiment of the present invention, the sliding plate 8 is provided with a connecting hole for connecting the counterweight 3.

[0106] Specifically, the counterweight 3 can be connected to the connecting hole on the sliding plate 8 via a third fixing member, so that the counterweight 3 is fixed on the sliding plate 8. In this way, when adjusting the horizontal and vertical positions of the counterweight 3, the counterweight 3 and the sliding plate 8 will not move relative to each other.

[0107] Here, the third fastener can be a positioning bolt 10.

[0108] The method of displacing counterweight 3 using a counterweight displacement device is as follows:

[0109] The ear plate 4 on the winch box 2 is repositioned: the screw 5 is driven to rotate by the drive motor, which moves the ear plate 4. The first detection element detects the number of rotations of the drive motor to obtain the moving distance of the ear plate 4, thereby determining the horizontal position of the ear plate 4. After the ear plate 4 moves to the designated position, the ear plate 4 is connected to the winch box 2 by the first fixing member, thus completing the repositioning of the ear plate 4.

[0110] Counterweight 3 displacement: First, counterweight 3 is placed on sliding plate 8 using a crane or other machinery, and fixed to sliding plate 8 using positioning bolts 10; then, the second drive mechanism drives sliding plate 8 to move. When the second detection element detects that the horizontal position of sliding plate 8 corresponds to the position of ear plate 4 detected by the first detection element, the controller controls the second drive mechanism to stop, and the controller controls the linear drive component of the brake to drive piston 15 to move to the second position, so that the elastic component 17 of the brake presses piston 15 and friction plate 14 together, realizing the sliding plate... Braking of 8 keeps the sliding plate 8 in the designated position; lifting drive 7 drives support plate 9 to move upward. When the vertical detection element detects that the counterweight 3 has moved to the required height, the controller controls the lifting drive 7 to stop moving, keeping the counterweight 3 at the designated height; finally, the counterweight 3 and ear plate 4 are connected by the second fixing member, so that the counterweight 3 is fixedly installed on the ear plate 4, and the positioning bolt 10 is removed, so that the counterweight 3 is separated from the sliding plate 8. The controller controls the lifting drive 7 to drive support plate 9 and sliding plate 8 to move downward to the initial position, completing the displacement of counterweight 3.

[0111] The working machinery provided by the present invention is described below. The working machinery described below can be referred to in correspondence with the counterweight displacement device described above.

[0112] The present invention also provides a working machine, including a counterweight displacement device as described in any of the above embodiments.

[0113] The beneficial effects achieved by the working machinery provided by this invention are consistent with the beneficial effects achieved by the counterweight displacement device provided by this invention, so they will not be repeated here.

[0114] It should be noted that the aforementioned operating machinery can be cranes, excavators, or other construction machinery.

[0115] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A counterweight displacement device, characterized in that, include: Ear plates are slidably connected to the winch box of the operating machinery, and the ear plates are used to connect the counterweight; The first drive mechanism is used to drive the ear plate to move horizontally in a direction that is closer to or farther from the turntable of the working machine; The first detection element is used to detect the horizontal position of the ear plate; A sliding plate is used to support the counterweight; The second driving mechanism is used to drive the sliding plate to move, and the moving path of the sliding plate is consistent with the moving path of the ear plate; A lifting drive mechanism is mounted on the frame of the operating machinery and is used to drive the sliding plate to lift. The controller is communicatively connected to the first drive mechanism, the first detection element, and the second drive mechanism. The controller controls the first drive mechanism and the second drive mechanism to stop according to the detection signal of the first detection element, so that the horizontal positions of the ear plate and the counterweight are matched.

2. The counterweight displacement device according to claim 1, characterized in that, The lifting drive mechanism includes: A support plate, wherein the sliding plate is slidably connected to the support plate; A lifting drive component is mounted on the vehicle frame and is used to drive the support plate to rise and fall.

3. The counterweight displacement device according to claim 2, characterized in that, Also includes: The brake is communicatively connected to the controller, which controls the brake to operate based on the detection signal from the first detection element, so that the sliding plate is fixed relative to the support plate.

4. The counterweight displacement device according to claim 3, characterized in that, The brake includes: A friction plate is disposed on one of the support plate and the sliding plate; A piston is disposed on the other of the support plate and the sliding plate; A brake drive assembly is used to drive the piston closer to or away from the friction plate. The brake drive assembly is communicatively connected to the controller. The controller controls the brake drive assembly to operate according to the detection signal of the first detection element, so that the piston contacts the friction plate.

5. The counterweight displacement device according to claim 4, characterized in that, The braking drive assembly includes: A linear drive is used to drive the piston to move between a first vertical position and a second vertical position, wherein: When the piston is in the first vertical position, there is a gap between the piston and the friction plate; when the piston is in the second vertical position, the piston is in contact with the friction plate.

6. The counterweight displacement device according to claim 5, characterized in that, The braking drive assembly also includes: An elastic element, the two ends of which are respectively connected to or abut against the sliding plate and the piston, wherein: When the piston is in the first vertical position, the elastic element is in a compressed state; When the piston is in the second vertical position, the elastic element is in the extended state and the piston is pressed against the friction plate.

7. The counterweight displacement device according to claim 1, characterized in that, The first driving mechanism includes: A screw is mounted on the winch box, and the ear plate is threadedly connected to the screw. A drive motor is used to drive the screw to rotate, and the first detection element is used to detect the number of rotations of the drive motor.

8. The counterweight displacement device according to claim 2, characterized in that, A roller is provided between the support plate and the sliding plate.

9. The counterweight displacement device according to claim 2, characterized in that, The support plate is provided with a first limiting plate and a second limiting plate at both ends, and the first limiting plate and the second limiting plate are used to block the sliding plate.

10. A type of operating machinery, characterized in that, Includes the counterweight displacement device as described in any one of claims 1-9.

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