Novel electric wheel clamping device

Abstract

The utility model discloses a novel electric wheel clamping device which comprises a driving motor, a gearbox, a ball screw and two brake arms, one end of the driving motor is installed at the input end of the gearbox, the other end of the driving motor is provided with a reverse brake electromagnet, and the ball screw is installed at the output end of the gearbox; a fixing frame is arranged at the end, close to the gearbox, of the ball screw, a lead screw lock nut is arranged at the end, away from the gearbox, of the ball screw, the periphery of the ball screw is sleeved with a disc brake spring, and a pressure sensor is arranged between the disc brake spring and the fixing frame. A brake shoe is arranged at the top end of each brake arm, a support is hinged between the brake arms, the bottom end of one brake arm is hinged to a gearbox, a square connector is hinged to the bottom of the other brake arm, an adjusting screw is in threaded connection with the square connector, and a moving connector is in threaded connection with the end of the adjusting screw. Interlocking control of the wheel clamp is achieved through a mechanical structure, the production cost and the debugging process of the wheel clamp are reduced, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of braking equipment, in particular to a novel electric wheel clamp. Background Art

[0002] The main function of the wheel clamp is to fix and limit the movement of the wheel to ensure the safety and stability of the equipment during shutdown or maintenance. Existing electric wheel clamps are controlled by devices such as servo motors, servo controllers, PLC logic control units, and microcomputer control chips. The installation and debugging time required is relatively long, and the costs of the servo motor and servo controller are also relatively high, resulting in high costs and low installation efficiency of existing electric wheel clamps. Content of the Utility Model

[0003] The purpose of the utility model is to provide a novel electric wheel clamp, which realizes the interlocking control of the wheel clamp through a mechanical structure, reduces the production cost and debugging process of the wheel clamp, and improves the installation efficiency.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: A novel electric wheel clamp includes a driving motor, a gearbox, a ball screw, and two braking arms. The input end and the output end of the gearbox are arranged on the same side. One end of the driving motor is installed at the input end of the gearbox, and an anti-braking electromagnet is installed at the other end of the driving motor. The ball screw is installed at the output end of the gearbox, and a speed reduction gear set is arranged inside the gearbox; a fixing frame is arranged at one end of the ball screw close to the gearbox, a screw lock nut is arranged at the other end of the ball screw away from the gearbox, a piston fixing joint is fixedly connected to the outer periphery of the screw lock nut, a disc brake spring is arranged between the fixing frame and the fixing joint, the disc brake spring is sleeved on the outer periphery of the ball screw, a pressure sensor is arranged between the disc brake spring and the fixing frame, and a protective sleeve is sleeved on the outer periphery of the disc brake spring; a brake shoe is arranged at the top end of the braking arm, a bracket is hinged between the braking arms, the bottom end of one braking arm is hinged to the gearbox, the bottom of the other braking arm is hinged to a square joint, an adjusting screw is threadedly connected to the square joint, a moving joint is threadedly connected to the end of the adjusting screw, and a piston transition joint is fixedly connected to the outer periphery of the moving joint, and the piston transition joint is fixedly connected to the piston fixing joint.

[0005] Optionally, the anti-braking electromagnet includes an electromagnet, an armature, and a brake disc. The electromagnet is located between the armature and the brake disc. A plurality of connecting rods are evenly arranged between the armature and the brake disc. One end of the connecting rod is fixedly connected to the brake disc, the other end of the connecting rod is slidably connected to the armature, a buffer spring is sleeved on the outer periphery of the connecting rod, and a limit nut for restricting the armature is arranged at the end of the connecting rod.

[0006] Optionally, a manual opening device is provided outside the anti-braking electromagnet. The manual opening device includes a winch, a handle is provided on one side of the winch, a connecting shaft is provided at the center of the other side of the winch, a positioning tooth is provided at the end of the connecting shaft, and a positioning groove matching the positioning tooth is provided on the rotating shaft of the driving motor. The positioning tooth passes through the armature, the electromagnet and the brake disc and then inserts into the positioning groove.

[0007] Optionally, a limit switch is installed outside the square joint.

[0008] Optionally, a limit screw is threadedly connected to the brake arm.

[0009] Optionally, a limit hole is opened on the outer side of the brake shoe, and a hook matching the limit hole is installed on the bracket.

[0010] The novel electric wheel clamp of the present utility model has the following advantages:

[0011] (1) The motor drives the ball screw to rotate, so that the screw nut drives the bottom end of the brake arm to move inward, thereby opening the two brake shoes; when the screw nut moves, it will compress the disc brake spring. When the pressure of the pressure sensor reaches the set value, the controller cuts off the power supply of the driving motor and supplies power to the anti-braking electromagnet. The anti-braking electromagnet brakes the driving motor to keep the brake arm in the open state; when the anti-braking electromagnet loses power, the braking of the driving motor is released, and the screw nut quickly pushes the brake arm outward under the action of the disc brake spring, thereby clamping the brake object with the brake shoe.

[0012] (2) When the electromagnet is energized, it attracts the armature, and the armature drives the brake disc to squeeze the electric shell to brake the driving motor. Manually turning the winch can manually open the brake shoe, and the operation time is shorter than the traditional hydraulic method.

[0013] (3) Both the limit switch and the fiber screw can be used to limit the opening degree of the brake arm to avoid excessive compression of the disc brake spring. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Figure 2 is the front view of the present utility model.

[0016] Figure 3 is Figure 2 the schematic cross-sectional structure diagram of

[0017] Figure 4 is the installation schematic diagram of the disc brake spring.

[0018] Figure 5 is the schematic structural diagram of the manual opening device.

[0019] Attached drawing reference numerals: 1, drive motor; 2, gearbox; 3, ball screw; 4, brake arm; 5, anti-brake electromagnet; 6, electric control box; 7, electromagnet; 8, armature; 9, brake disc; 10, connecting rod; 11, buffer spring; 12, limit nut; 13, winch; 14, handle; 15, connecting shaft; 16, fixing bracket; 17, screw lock nut; 18, piston fixed joint; 19, disc brake spring; 20, pressure sensor; 21, protection sleeve; 22, brake shoe; 23, bracket; 24, square joint; 25, adjusting screw; 26, moving joint; 27, piston transition joint; 28, lock nut; 29, limit hole; 30, hook; 31, limit screw; 32, limit switch. Detailed implementation manner

[0020] The present utility model will be further described below in conjunction with the attached drawings.

[0021] As Figures 1-5 shown, a new type of electric wheel clamp includes a drive motor 1, a gearbox 2, a ball screw 3 and two brake arms 4. The input end and the output end of the gearbox 2 are arranged inside the gearbox 2. One end of the drive motor 1 is installed at the input end of the gearbox 2, and an anti-brake electromagnet 5 is installed at the other end of the drive motor 1. An electric control box 6 is arranged at the bottom of the drive motor 1. The anti-brake electromagnet 5 includes an electromagnet 7, an armature 8 and a brake disc 9. The electromagnet 7 is located between the armature 8 and the brake disc 9. A plurality of connecting rods 10 are evenly arranged between the armature 8 and the brake disc 9. One end of the connecting rod 10 is fixedly connected to the brake disc 9, and the other end of the connecting rod 10 is slidably connected to the armature 8. A buffer spring 11 is sleeved on the outer periphery of the connecting rod 10, and a limit nut 12 for restricting the armature 8 is arranged at the end of the connecting rod 10. A manual opening device is further arranged outside the anti-brake electromagnet 5. The manual opening device includes a winch 13. A handle 14 is arranged on one side of the winch 13. A connecting shaft 15 is arranged at the center of the other side of the winch 13. A positioning tooth is arranged at the end of the connecting shaft 15, and a positioning groove matching the positioning tooth is arranged on the rotating shaft of the drive motor 1. The positioning tooth passes through the armature 8, the electromagnet 7 and the brake disc 9 and then is inserted into the positioning groove. During normal use, the positioning tooth is pulled out of the positioning groove, and the manual opening device is separated from the equipment, which does not affect the normal use of the equipment. When it is necessary to manually open the brake shoe 22, the positioning tooth is inserted into the positioning groove, and the handle 14 is held to rotate the winch 13 to slowly open the brake shoe 22.

[0022] The ball screw 3 is installed at the output end of the gearbox 2. A speed reduction gear set is arranged inside the gearbox 2 to convert the high-speed rotation of the driving motor 1 into the low-speed rotation of the ball screw 3. A fixing bracket 16 is arranged at one end of the ball screw 3 close to the gearbox 2, and a screw lock nut 17 is arranged at the other end of the ball screw 3 away from the gearbox 2. A piston fixed joint 18 is fixedly connected to the outer periphery of the screw lock nut 17. A disc brake spring 19 is arranged between the fixing bracket 16 and the fixed joint. The disc brake spring 19 is sleeved on the outer periphery of the ball screw 3. A pressure sensor 20 is arranged between the disc brake spring 19 and the fixing bracket 16. A protective sleeve 21 is sleeved on the outer periphery of the disc brake spring 19.

[0023] A brake shoe 22 is arranged at the top end of the brake arm 4. A bracket 23 is hinged between the brake arms 4. The bottom end of one brake arm 4 is hinged to the gearbox 2, and the bottom of the other brake arm 4 is hinged to a square joint 24. An adjusting screw 25 is threadedly connected to the square joint 24. A moving joint 26 is threadedly connected to the end of the adjusting screw 25. A piston transition joint 27 is fixedly connected to the outer periphery of the moving joint 26. The piston transition joint 27 is fixedly connected to the piston fixed joint 18. By adjusting the adjusting screw 25, the opening degree when the brake arms 4 are closed can be adjusted to be suitable for braking objects of different thicknesses. Locking nuts 28 are arranged on both sides of the square joint 24. The locking nuts 28 are threadedly connected to the adjusting screw 25. The locking nuts 28 can fix the position of the square joint 24 to prevent the square joint 24 from moving by mistake and affecting the braking accuracy.

[0024] When the drive motor 1 is powered on, it can drive the ball screw 3 to rotate. The screw nut 17 drives the adjusting screw 25 and the square joint 24 to move inward, so that the bottom of the brake arm 4 contracts inward, and the brake shoe 22 at the top of the brake arm 4 opens, realizing brake release. During the inward movement of the screw nut 17, the disc brake spring 19 will be compressed and a pressure will be exerted on the pressure sensor 20. When the pressure reaches the set value, the controller cuts off the power supply of the drive motor 1, and the drive motor 1 stops rotating. At the same time, the anti-braking electromagnet 5 is powered on, and the electromagnet 7 is energized to attract the armature 8. The armature 8 compresses the buffer spring 11 so that the brake disc 9 presses against the motor housing, realizing the braking of the motor and keeping the brake shoe 22 in the open state. A limiting hole 29 is provided on the outer side of the brake shoe 22, and a hook 30 matching the limiting hole 29 is installed on the bracket 23. When the hook 30 is hung in the limiting hole 29, the state of the brake shoe 22 can be maintained. A limit switch 32 is installed outside the square joint 24, and a limit screw 31 is threadedly connected to the brake arm 4. When the pressure reaches the set value of the pressure sensor 20 and the controller does not cut off the power supply of the drive motor 1, the screw nut 17 will drive the square joint 24 to continue to move inward. At this time, the limit switch 32 contacts the protective sleeve 21, providing a signal to the controller again to cut off the power supply of the drive motor 1. If the controller still does not cut off the power supply of the drive motor 1, the brake arm 4 continues to open, and the limit screw 31 will abut against the bracket 23, preventing the screw nut 17 from moving inward further through the mechanical structure. Rotating the limit screw 31 can adjust the length of the limit screw 31 to limit the maximum opening degree of the brake arm 4. When the power supply of the anti-braking electromagnet 5 is cut off, the electromagnet 7 releases the armature 8, and under the action of the buffer spring 11, the brake disc 9 is separated from the motor housing, and the braking of the drive motor 1 is released. The screw nut 17 quickly pushes the bottom of the brake arm 4 to move outward under the action of the elastic force of the disc brake spring 19, so that the brake shoe 22 closes and clamps the braking object. This device realizes the matching of a conventional motor with the drive power unit gearbox through the interlocking control of the pressure sensor 20 and the mechanical structure, achieving simple, precise and two-way protection control, eliminating the installation and debugging by the staff and the cumbersome trial operation link, saving the installation and debugging time, and reducing the manufacturing cost and production process.

[0025] The embodiments described above are only partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A new type of electric wheel clamp, characterized by: It includes a driving motor, a gearbox, a ball screw and two brake arms. The input end and the output end of the gearbox are arranged on the same side. One end of the driving motor is installed at the input end of the gearbox, and the other end of the driving motor is installed with a counter-brake electromagnet. The ball screw is installed at the output end of the gearbox, and a speed reduction gear set is arranged in the gearbox; a fixing frame is arranged at the end of the ball screw close to the gearbox, and a screw lock nut is arranged at the end of the ball screw away from the gearbox. The outer periphery of the screw lock nut is fixedly connected with a piston fixed joint, a disc brake spring is arranged between the fixing frame and the fixed joint, the disc brake spring is sleeved on the outer periphery of the ball screw, a pressure sensor is arranged between the disc brake spring and the fixing frame, and a protective sleeve is sleeved on the outer periphery of the disc brake spring; a brake shoe is arranged at the top of the brake arm, and a bracket is hinged between the brake arms. The bottom end of one brake arm is hinged on the gearbox, and the bottom of the other brake arm is hinged with a square joint, an adjusting screw is threadedly connected to the square joint, and the end of the adjusting screw is threadedly connected to a moving joint, and the outer periphery of the moving joint is fixedly connected with a piston transition joint, and the piston transition joint is fixedly connected to the piston fixed joint.

2. The new electric wheel clamp as claimed in claim 1, characterized in that: The anti-braking electromagnet includes an electromagnet, an armature and a brake disc. The electromagnet is located between the armature and the brake disc. A number of connecting rods are evenly arranged between the armature and the brake disc. One end of the connecting rod is fixedly connected to the brake disc, and the other end of the connecting rod is slidably connected to the armature. A buffer spring is provided on the outer peripheral sleeve of the connecting rod, and a limit nut for limiting the armature is provided at the end of the connecting rod.

3. The new electric wheel clamp as claimed in claim 2, characterized in that: A manual opening device is arranged on the outside of the anti-braking electromagnet, and the manual opening device includes a capstan. A handle is arranged on one side of the capstan, and a connecting shaft is arranged at the center of the other side of the capstan. A positioning tooth is arranged at the end of the connecting shaft, and a positioning groove matching the positioning tooth is arranged on the rotating shaft of the driving motor. The positioning tooth passes through the armature, the electromagnet and the brake disc and is inserted into the positioning groove.

4. The new electric wheel clamp as claimed in claim 1 is characterized in that: The square connector has a limit switch mounted on the outside.

5. The new electric wheel clamp as claimed in claim 1 is characterized in that: A limit screw is threadedly connected on the brake arm.

6. The new electric wheel clamp as claimed in claim 1, characterized in that: A limit hole is arranged on the outer side of the brake shoe, and a hook matching the limit hole is installed on the bracket.

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