Anti-lock coupling for construction machines

Abstract

The utility model discloses a kind of anti-lock type couplings for engineering machinery, it is related to coupling technical field, including cylinder, the side of cylinder is provided with driven column, cylinder one end is fixed with fixed block, driven column one end is fixed with rotating block, limiting mechanism is arranged between cylinder and driven column, for adjusting the resistance degree of coupling;Limiting mechanism includes the connecting column fixed in the end of fixed block, electromagnet is fixed in connecting column, electromagnet is equipped with permanent magnet block, permanent magnet block is fixedly connected with connecting column and array distribution, permanent magnet block is provided with resistance block between, resistance block is fixedly connected with connecting column, fixed block one end is fixed with torque sensor and with permanent magnet block corresponding, rotating block is provided with fixed groove corresponding with permanent magnet block. Resistance pressure of driven column is facilitated to adjust cylinder, reduce the situation of coupling overload damage, reduce the influence to coupling operation and service life, reduce the influence to working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coupling technology, specifically to an anti-lock coupling for engineering machinery. Background Technology

[0002] The basic function of a coupling is to connect the "power source" (such as an engine or motor) and the "actuator" (such as a hydraulic pump, gearbox, or drive shaft of a working device) of construction machinery to achieve the transmission of torque and speed.

[0003] Construction machinery operating environments are characterized by high impact, strong vibration, severe load fluctuations, and frequent stall risks. Transmission systems have long faced safety incidents caused by "component damage due to overload stall" and "delayed anti-lock braking response".

[0004] Existing couplings connect the drive shaft and driven shaft for easy power transmission. However, when overloaded, these couplings cut off power by breaking a shear pin to protect the drive shaft. This requires manual replacement after breakage. Furthermore, they cannot quickly reduce frictional torque under overload conditions, which can easily lead to coupling overload and damage. They also make it difficult to adjust the coupling's contact pressure, affecting its operation and service life, and consequently impacting the working efficiency of construction machinery. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-lock coupling for engineering machinery, to solve the problems mentioned in the background art. Existing couplings, when overloaded, achieve power cut-off through shear pin breakage to protect the drive shaft. However, manual replacement is required after breakage, and the frictional torque cannot be quickly reduced under overload, easily leading to coupling overload and damage. Furthermore, it is inconvenient to adjust the coupling's contact pressure, affecting its operation and service life, and consequently impacting the working efficiency of the engineering machinery. The objective of this utility model can be achieved through the following technical solutions: An anti-lock coupling for engineering machinery includes a column, a driven column on one side of the column, a fixed block fixed at one end of the column, a rotating block fixed at one end of the driven column, and a limiting mechanism between the column and the driven column for adjusting the contact force of the coupling. The limiting mechanism includes a connecting column fixed to the end of a fixed block, an electromagnet fixed inside the connecting column, a permanent magnet block sleeved on the electromagnet, the permanent magnet blocks being fixedly connected to the connecting column and arranged in an array, abutting blocks being arranged between the permanent magnet blocks, the abutting blocks being fixedly connected to the connecting column, a torque sensor fixed to one end of the fixed block and corresponding to the permanent magnet block, a fixing groove corresponding to the permanent magnet block being opened on the rotating block, a controller being arranged on one side of the driven column, the controller being electrically connected to the electromagnet, and the controller being electrically connected to the torque sensor.

[0006] As a further embodiment of this utility model: the limiting mechanism further includes two symmetrical hydraulic telescopic rods fixed on the rotating block, and two symmetrical arc-shaped friction plates are provided inside the rotating block and correspond to the contact block. The arc-shaped friction plates are located in the fixed groove, and the telescopic ends of the hydraulic telescopic rods extend into the rotating block and are fixedly connected to the arc-shaped friction plates.

[0007] As a further embodiment of this utility model: a pressure sensor is fixed between the arc-shaped friction plate and the rotating block, and the pressure sensor is electrically connected to the controller.

[0008] As a further embodiment of this utility model: a differential sensor is fixed on the fixed block and the rotating block, and the differential sensor is electrically connected to the controller.

[0009] As a further embodiment of this utility model: the arc-shaped friction plate has a rough metal surface, and the adjacent permanent magnet blocks are arranged with alternating N and S poles.

[0010] As a further embodiment of this utility model: two symmetrical heat-conducting plates are fixed on the rotating block, the heat-conducting plates are located in the fixing groove, heat transfer plates are fixed on the heat-conducting plates and distributed in an array, and heat transfer plates extend out of the rotating block and are fixedly connected to heat dissipation plates.

[0011] As a further embodiment of this utility model: heat dissipation fins are fixed on the heat dissipation plate and arranged in an array, and a filter screen is fixed on the heat dissipation fins.

[0012] As a further embodiment of this utility model: heat dissipation holes are provided between the permanent magnet block and the electromagnet, and the heat dissipation holes are distributed in a spiral array inside the connecting column.

[0013] The beneficial effects of this utility model are: 1. This utility model detects the operating status of the coupling using a differential speed sensor and a torque sensor. When the coupling is overloaded, the detection data is fed back to the controller. The controller controls the extension and retraction of the hydraulic telescopic rod, which moves the arc-shaped friction plate. The pressure sensor adjusts the contact force of the arc-shaped friction plate. At the same time, the electromagnet operates, and the controller controls the force of the electromagnet to resist the attraction force of the permanent magnet block, causing the column to rotate freely. This facilitates the adjustment of the contact pressure between the column and the driven column, reducing the possibility of overload damage to the coupling, minimizing the impact on the operation and service life of the coupling, and reducing the impact on work efficiency.

[0014] 2. This utility model absorbs heat from the rotating block through a heat-conducting plate, conducts it out through multiple heat transfer plates, increases the contact area with air through a heat dissipation plate to facilitate heat dissipation of the coupling, and further increases the contact area with air through heat dissipation fins to further improve heat dissipation of the coupling. When the coupling rotates, the heat dissipation effect of the heat dissipation plate and heat dissipation fins is further improved. A filter screen protects the heat dissipation fins to reduce dust and debris falling into them. The heat dissipation holes set between the permanent magnet block and the electromagnet facilitate heat dissipation of the permanent magnet block and the electromagnet, thus facilitating the operation of the coupling. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a first structural schematic diagram of the coupling of this utility model; Figure 2 This is a schematic diagram of the second structure of the coupling of this utility model; Figure 3 This is a schematic diagram of the internal structure of the coupling of this utility model; Figure 4 This is a schematic diagram of the internal second structure of the coupling of this utility model.

[0017] In the diagram: 1. Column; 2. Driven column; 3. Fixed block; 4. Rotating block; 5. Connecting column; 6. Fixed groove; 7. Permanent magnet block; 8. Electromagnet; 9. Contact block; 10. Torque sensor; 11. Arc-shaped friction plate; 12. Hydraulic telescopic rod; 13. Pressure sensor; 14. Differential sensor; 15. Controller; 16. Heat-conducting plate; 17. Heat transfer plate; 18. Heat dissipation plate; 19. Heat dissipation fins; 20. Filter screen. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 - Figure 3 As shown, this utility model is an anti-lock coupling for engineering machinery, including a column 1, a driven column 2 on one side of the column 1, a fixing block 3 fixed at one end of the column 1, a rotating block 4 fixed at one end of the driven column 2, and a limiting mechanism between the column 1 and the driven column 2 for adjusting the contact force of the coupling. The limiting mechanism includes a connecting post 5 fixed to the end of the fixed block 3, an electromagnet 8 fixed inside the connecting post 5, a permanent magnet block 7 sleeved on the electromagnet 8, the permanent magnet blocks 7 fixedly connected to the connecting post 5 and arranged in an array, abutting blocks 9 arranged between the permanent magnet blocks 7, the abutting blocks 9 fixedly connected to the connecting post 5, a torque sensor 10 fixed to one end of the fixed block 3 corresponding to the permanent magnet block 7, a fixing groove 6 corresponding to the permanent magnet block 7 opened on the rotating block 4, a controller 15 arranged on one side of the driven post 2, the controller 15 electrically connected to the electromagnet 8, and the controller 15 electrically connected to the torque sensor 10. The limiting mechanism also includes two symmetrical hydraulic telescopic rods 12 fixed on the rotating block 4, two symmetrical arc-shaped friction plates 11 arranged inside the rotating block 4 corresponding to the abutting blocks 9, the arc-shaped friction plates 11 located in the fixing groove 6, and the telescopic ends of the hydraulic telescopic rods 12 extending into the rotating block 4 and fixedly connected to the arc-shaped friction plates 11. A pressure sensor 13 is fixed between the arc-shaped friction plate 11 and the rotating block 4, and the pressure sensor 13 is electrically connected to the controller 15. A differential speed sensor 14 is fixed on the fixed block 3 and the rotating block 4, and the differential speed sensor 14 is electrically connected to the controller 15. The arc-shaped friction plate 11 has a rough metal surface, and adjacent permanent magnet blocks 7 are arranged with alternating N and S poles.

[0020] Specifically, the workers install column 1 and driven column 2 onto the required engineering machinery equipment. The limiting mechanism facilitates the connection between column 1 and driven column 2, and also facilitates the adjustment of the contact pressure between column 1 and driven column 2, reducing the possibility of overload damage to the coupling, minimizing the impact on the operation and service life of the coupling, and reducing the impact on work efficiency. Specifically, the operator moves column 1, causing connecting column 5 to enter fixed groove 6, aligning the permanent magnet block with the arc-shaped friction plate 11. The attraction of permanent magnet block 7 draws in arc-shaped friction plate 11 and rotating block 4, facilitating the connection between column 1 and driven column 2. Permanent magnet block 7 has its N and S poles alternately arranged, increasing the force of attraction between permanent magnet block 7 and arc-shaped friction plate 11, making the attraction force more uniform. Controller 15 controls electromagnet 8 to strengthen the attraction of rotating block 4. Simultaneously, hydraulic telescopic rod 12 is operated. Hydraulic telescopic rod 12, used in conjunction with a direct-acting electromagnetic directional valve and a micro accumulator, improves the response speed of hydraulic telescopic rod 12, causing arc-shaped friction plate 11 to contact contact block 9. One side of arc-shaped friction plate 11 has a rough metal surface, increasing the friction between arc-shaped friction plate 11 and contact block 9. When the coupling is in use, differential sensor 14 (HG73) and torque sensor 10 (ATO-TQS-) are used to control the attraction. D01) The operating status of the coupling is detected. When the coupling is overloaded, the detection data is fed back to the controller 15. The controller 15 controls the extension and retraction of the hydraulic telescopic rod 12, which drives the arc-shaped friction plate 11 to move. The pressure sensor 13 (Druck UNIK 5000) adjusts the contact force of the arc-shaped friction plate 11. At the same time, the electromagnet 8 runs, and the controller 15 controls the force of the electromagnet 8 to resist the attraction force of the permanent magnet block 7, so that the column 1 rotates freely, reducing the possibility of coupling damage and facilitating the adjustment of the coupling contact pressure.

[0021] In this embodiment, refer to Figure 2 - Figure 4 As shown, two symmetrical heat-conducting plates 16 are fixed on the rotating block 4. The heat-conducting plates 16 are located in the fixing groove 6. Heat transfer plates 17 are fixed on the heat-conducting plates 16 and arranged in an array. The heat transfer plates 17 extend out of the rotating block 4 and are fixedly connected to a heat dissipation plate 18. Heat dissipation fins 19 are fixed on the heat dissipation plate 18 and arranged in an array. A filter screen 20 is fixed on the heat dissipation fins 19. Heat dissipation holes are provided between the permanent magnet block 7 and the electromagnet 8. The heat dissipation holes are arranged in a spiral array within the connecting column 5.

[0022] Specifically, during coupling operation, the heat-conducting plate 16 absorbs heat from the rotating block 4 and conducts it out through multiple heat transfer plates 17. The heat dissipation plate 18 increases the contact area with air, facilitating heat dissipation of the coupling. The heat dissipation fins 19 further increase the contact area with air, further improving heat dissipation of the coupling. When the coupling rotates, the heat dissipation effect of the heat dissipation plate 18 and the heat dissipation fins 19 is further improved. The filter screen 20 protects the heat dissipation fins 19, reducing dust and debris falling into them. The heat dissipation holes between the permanent magnet block 7 and the electromagnet 8 are arranged in a spiral pattern, facilitating heat dissipation of the permanent magnet block 7 and the electromagnet 8, and facilitating the operation of the coupling.

[0023] The working principle of this utility model is as follows: Specifically, the workers install the column 1 and the driven column 2 onto the required engineering machinery equipment, and the connection between the column 1 and the driven column 2 is facilitated by the limiting mechanism. Then, the operator moves column 1, causing connecting column 5 to enter fixed groove 6, aligning the permanent magnet iron block with arc-shaped friction plate 11. The attraction of permanent magnet block 7 attracts arc-shaped friction plate 11 and rotating block 4, facilitating the connection between column 1 and driven column 2. Permanent magnet block 7 has its N and S poles alternately arranged, increasing the force of attraction between permanent magnet block 7 and arc-shaped friction plate 11, making the attraction force more uniform. The controller 15 controls electromagnet 8 to strengthen the attraction of rotating block 4. At the same time, the hydraulic telescopic rod 12 is operated. The hydraulic telescopic rod 12 is used in conjunction with a direct-acting electromagnetic reversing valve and a micro accumulator to improve the response speed of hydraulic telescopic rod 12, causing arc-shaped friction plate 11 to abut against contact block 9. One side of arc-shaped friction plate 11 has a rough metal surface, increasing the friction between arc-shaped friction plate 11 and contact block 9. When the coupling is in use, the differential sensor 14 (HG73) and torque sensor 10 (ATO-TQS-) are used to control the attraction. D01) Detect the operating status of the coupling. When the coupling is overloaded, the detection data is fed back to the controller 15. The controller 15 controls the hydraulic telescopic rod 12 to extend and retract, which drives the arc-shaped friction plate 11 to move. The pressure sensor 13 (Druck UNIK 5000) adjusts the resistance of the arc-shaped friction plate 11. At the same time, the electromagnet 8 runs, and the controller 15 controls the force of the electromagnet 8 to resist the attraction of the permanent magnet block 7, so that the column 1 rotates freely. Then, during coupling operation, the heat-conducting plate 16 absorbs the heat inside the rotating block 4 and conducts it out through multiple heat transfer plates 17. The heat dissipation plate 18 increases the contact area with air, facilitating heat dissipation of the coupling. The heat dissipation fins 19 further increase the contact area with air, further improving the heat dissipation of the coupling. When the coupling rotates, the heat dissipation effect of the heat dissipation plate 18 and the heat dissipation fins 19 is further improved. The heat dissipation fins 19 are protected by the filter screen 20, reducing dust and debris falling into the heat dissipation fins 19. The heat dissipation holes provided between the permanent magnet block 7 and the electromagnet 8 are spirally distributed, facilitating heat dissipation of the permanent magnet block 7 and the electromagnet 8.

[0024] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A coupling for anti-lock braking engineering machinery, comprising a column (1), characterized in that: A driven column (2) is provided on one side of the column (1), a fixed block (3) is fixed at one end of the column (1), a rotating block (4) is fixed at one end of the driven column (2), and a limiting mechanism is provided between the column (1) and the driven column (2) for adjusting the contact force of the coupling. The limiting mechanism includes a connecting column (5) fixed at the end of the fixed block (3), an electromagnet (8) fixed inside the connecting column (5), a permanent magnet block (7) sleeved on the electromagnet (8), the permanent magnet block (7) fixedly connected to the connecting column (5) and distributed in an array, a contact block (9) is provided between the permanent magnet blocks (7), the contact block (9) is fixedly connected to the connecting column (5), a torque sensor (10) is fixed at one end of the fixed block (3) and corresponds to the permanent magnet block (7), a fixing groove (6) corresponding to the permanent magnet block (7) is opened on the rotating block (4), a controller (15) is provided on one side of the driven column (2), the controller (15) is electrically connected to the electromagnet (8), and the controller (15) is electrically connected to the torque sensor (10).

2. The anti-lock coupling for engineering machinery according to claim 1, characterized in that, The limiting mechanism also includes two symmetrical hydraulic telescopic rods (12) fixed on the rotating block (4). The rotating block (4) is provided with two symmetrical arc-shaped friction plates (11) corresponding to the contact block (9). The arc-shaped friction plates (11) are located in the fixed groove (6). The telescopic end of the hydraulic telescopic rod (12) extends into the rotating block (4) and is fixedly connected to the arc-shaped friction plates (11).

3. The anti-lock coupling for engineering machinery according to claim 2, characterized in that, A pressure sensor (13) is fixed between the arc-shaped friction plate (11) and the rotating block (4), and the pressure sensor (13) is electrically connected to the controller (15).

4. The anti-lock coupling for engineering machinery according to claim 1, characterized in that, Differential sensors (14) are fixed on the fixed block (3) and the rotating block (4), and the differential sensors (14) are electrically connected to the controller (15).

5. The anti-lock coupling for engineering machinery according to claim 2, characterized in that, The arc-shaped friction plate (11) has a rough metal surface, and the adjacent permanent magnet blocks (7) are arranged with N and S poles alternately.

6. The anti-lock coupling for engineering machinery according to claim 1, characterized in that, Two symmetrical heat-conducting plates (16) are fixed on the rotating block (4). The heat-conducting plates (16) are located in the fixing groove (6). Heat transfer plates (17) are fixed on the heat-conducting plates (16) and arranged in an array. The heat transfer plates (17) extend out of the rotating block (4) and are fixedly connected to a heat dissipation plate (18).

7. The anti-lock coupling for engineering machinery according to claim 6, characterized in that, The heat sink (18) is fixed with heat sink fins (19) arranged in an array, and the heat sink fins (19) are fixed with filters (20).

8. The anti-lock coupling for engineering machinery according to claim 1, characterized in that, A heat dissipation hole is provided between the permanent magnet block (7) and the electromagnet (8), and the heat dissipation hole is distributed in a spiral array inside the connecting column (5).

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