Lever braking mechanism for wheel

Abstract

A lever braking mechanism for a wheel comprises a lever braking mechanism, an elastic bogie mechanism and a conical surface locking mechanism, the elastic bogie mechanism is controlled by the conical surface locking mechanism to be in rigid connection or elastic connection, and the lever braking mechanism adjusts the locking force of the conical surface locking mechanism. According to the lever braking mechanism for the wheel, the holding force is amplified through the lever structure, so that better braking is achieved, and the integration degree is high.

Description

Technical Field

[0001] The utility model relates to the field of wheels, in particular to a lever braking mechanism for wheels. Background Art

[0002] The existing wheel brake mechanism has a complex structure and is not integrated. It is generally connected to the AGV body with a mechanical locking structure. When braking is required, mechanical braking is performed by manual action, which poses a safety hazard. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a lever brake mechanism for a wheel, so that the wheel can be better braked when it is connected to the vehicle body through a wheel variable stiffness suspension device.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] The lever brake mechanism for the wheel includes a lever brake mechanism, an elastic bogie mechanism, and a conical locking mechanism. The elastic bogie mechanism is controlled by the conical locking mechanism and is rigidly or elastically connected. The lever brake mechanism adjusts the locking force of the conical locking mechanism.

[0006] More specifically, the elastic bogie mechanism includes a bogie, a compression spring guide rod, a compression spring, an upper flange, and a middle guide rod. The bogie and the upper flange are arranged opposite to each other, the compression spring is placed between the bogie and the upper flange, the compression spring guide rod passes through the bogie and the compression spring and is connected to the upper flange, connecting the bogie, the compression spring and the upper flange together; the lever brake mechanism includes a locking pull ring, a screw, and a groove. The groove is provided on the bogie, and a fulcrum is provided at the connecting end of the locking pull ring. The fulcrum enters the groove, and the height of the fulcrum is adjusted by the screw to adjust the locking force between the locking ring and the locking sleeve.

[0007] Preferably, the conical surface connection mechanism includes a locking pull ring, a locking ring, a locking sleeve, and a shaft retaining ring. The locking sleeve is provided with a conical surface on its circumference, and the conical surface is equally divided by a gap. The locking ring is provided with a conical surface corresponding to the conical surface of the locking sleeve. The locking sleeve and the locking ring move axially upward, and the conical surface of the locking sleeve enters the conical surface of the locking ring and is squeezed and shrinks, thereby holding the middle guide rod; when the locking ring moves downward due to gravity, it leaves the locking sleeve, thereby releasing the conical surface of the locking sleeve and restoring the conical surface of the locking sleeve, so that the middle guide rod can move freely; the middle guide rod is fixed on the upper flange and passes through the bogie, the locking sleeve, and the locking ring, and the lower end is limited by the shaft retaining ring.

[0008] Preferably, the locking ring is circumferentially provided with fixing columns, which are connected to the locking pull ring.

[0009] Preferably, the fixing post seats the locking ring on the groove of the locking pull ring, which allows for better assembly.

[0010] Preferably, an electromagnet is provided in the bogie or the locking pull ring, which generates magnetic force when energized, so that the bogie and the locking pull ring are attracted to each other, and the locking pull ring drives the locking ring to move upward to tighten the conical surface between the locking pull ring and the locking ring to the middle guide rod; when the electromagnet is not energized, the magnetic force is lost, the locking pull ring falls, so that the locking ring and the locking sleeve are not in contact, and the middle guide rod can move freely.

[0011] Preferably, the locking pull ring is rotatably connected to the compression spring guide rod.

[0012] Preferably, the locking pull ring is rotatably connected to the compression spring guide rod by a pin, which makes the connection more convenient.

[0013] Compared with the prior art, the advantages of the present invention are: the wheel lever brake mechanism amplifies the holding force through the lever structure, thereby achieving better braking and high integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the lever brake mechanism for a wheel according to an embodiment of the present utility model when the electromagnet is not energized.

[0015] Figure 2 It is a structural schematic diagram of the lever brake mechanism for a wheel according to an embodiment of the present utility model when the electromagnet is energized.

[0016] Figure 3 It is a partially enlarged schematic diagram of the variable stiffness wheel suspension device according to an embodiment of the present utility model.

[0017] Figure 4 Schematic diagram of a locking sleeve according to an embodiment of the present invention.

[0018] Figure 5 Schematic diagram of a locking ring according to an embodiment of the present invention.

[0019] Figure 6 It is a three-dimensional diagram of the variable stiffness wheel suspension device according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1-6 As shown, the wheel lever brake mechanism includes a lever brake mechanism, a bogie 11, a compression spring guide rod 16, a compression spring 17, an upper flange 18, a middle guide rod 15, a locking pull ring 12, a locking ring 13, a locking sleeve 14, and an axle retaining ring 19.

[0022] The bogie 11 and the upper flange 18 are arranged opposite to each other, the compression spring 17 is placed between the bogie 11 and the upper flange 18, and the compression spring guide rod 16 passes through the bogie 11, the compression spring 17 and is connected to the upper flange 18, connecting the bogie 11, the compression spring 17 and the upper flange 18 together.

[0023] The bogie 11 may be connected to wheels.

[0024] The middle guide rod 15 is fixed on the upper flange 18 and passes through the bogie 11, the locking sleeve 14, and the locking ring 13. The lower end is limited by the shaft retaining ring 19.

[0025] The locking sleeve 14 is provided with a conical surface 141 on its circumference, which is equally divided by a gap 1411. The locking ring 13 is provided with a conical surface 132 corresponding to the conical surface 141 of the locking sleeve 14. When the locking sleeve 14 and the locking ring 13 move upward axially, the locking sleeve conical surface 141 enters the locking ring conical surface 132 and is squeezed and shrinks, thereby holding the middle guide rod 15 tightly. When the locking ring 13 moves downward due to gravity, it leaves the locking sleeve 14, thereby releasing the locking sleeve conical surface 141 and restoring the locking sleeve conical surface 141, and the locking sleeve conical surface 141 is restored to its original state, and the middle guide rod 15 can move freely.

[0026] The locking ring 13 is provided with fixing columns 131 along its circumference, and the locking ring 13 is supported on the groove 123 of the locking pull ring 12 through the fixing columns 131 .

[0027] The pin shaft 131 of the locking ring 13 and the locking rod 12 are hingedly connected and can move.

[0028] An electromagnet 111 is provided in the bogie 11. When the electromagnet 111 is energized, it generates magnetic force, which can attract the locking pull ring 12. The locking pull ring 12 drives the locking ring 13 to move upward and contact the locking sleeve 14. The middle guide rod 15 is tightly clamped through the conical surface structure between the locking pull ring 12 and the locking ring 13. At this time, the bogie 11 is locked and can be rigidly fixed.

[0029] When the electromagnet 111 is not energized, it loses its magnetic force and the locking pull ring 12 falls down due to its own weight, thereby making the locking ring 13 and the locking sleeve 14 no longer in contact, and the middle guide rod 15 can move freely. At this time, the compression spring 17 between the bogie 11 and the upper flange 18 makes the two produce elasticity.

[0030] The bogie 11 is rotatably connected to the compression spring guide rod 16 by a pin shaft 121, more specifically, is hinged and movable.

[0031] The lever brake mechanism includes a locking pull ring 12, a screw 122, and a groove 112. The groove 112 is set on the bogie 11. A fulcrum is set at the connecting end of the locking pull ring 12. The fulcrum enters the groove 112, and the height of the fulcrum is adjusted by the screw 122, thereby adjusting the clamping force of the locking ring 13 and the locking sleeve 14.

[0032] The locking pull ring 12 takes the pin 121 as a fulcrum to form a lever structure, and the amplified force is provided by the different lengths of the force arm.

Claims

1. A wheel lever brake mechanism, characterized in that: It includes a lever braking mechanism, an elastic bogie mechanism, and a conical surface locking mechanism. The elastic bogie mechanism is controlled by the conical surface locking mechanism to be rigidly or elastically connected. The lever braking mechanism adjusts the locking force of the conical surface locking mechanism.

2. The wheel lever brake mechanism according to claim 1, characterized in that: The elastic bogie mechanism includes a bogie, a compression spring guide rod, a compression spring, an upper flange, and a middle guide rod. The bogie and the upper flange are arranged opposite to each other, the compression spring is placed between the bogie and the upper flange, the compression spring guide rod passes through the bogie and is connected to the upper flange, connecting the bogie, the compression spring and the upper flange together; the lever brake mechanism includes a locking pull ring, a screw, and a groove. The groove is provided on the bogie, and a fulcrum is provided at the connecting end of the locking pull ring. The fulcrum enters the groove, and the height of the fulcrum is adjusted by the screw to adjust the locking force between the locking ring and the locking sleeve.

3. The wheel lever brake mechanism according to claim 2, characterized in that: The conical surface connection mechanism includes a locking pull ring, a locking ring, a locking sleeve, and a shaft retaining ring. The locking sleeve is provided with a conical surface on its circumference, and the conical surface is equally divided by a gap. The locking ring is provided with a conical surface corresponding to the conical surface of the locking sleeve. When the locking sleeve and the locking ring move axially upward, the conical surface of the locking sleeve enters the conical surface of the locking ring and is squeezed and reduced, thereby holding the middle guide rod tightly. When the locking ring moves downward due to gravity, it leaves the locking sleeve, thereby releasing the locking sleeve conical surface and restoring the locking sleeve conical surface, and the middle guide rod can move freely; the middle guide rod is fixed on the upper flange and passes through the bogie, locking sleeve, and locking ring, and the lower end is limited by the shaft clamp ring.

4. The wheel lever brake mechanism according to claim 3, characterized in that: The locking ring is circumferentially provided with fixing columns, which are connected to the locking pull ring.

5. The wheel lever brake mechanism according to claim 4, characterized in that: The fixing post holds the locking ring over the groove of the locking pull ring.

6. The wheel lever brake mechanism according to claim 1, characterized in that: An electromagnet is provided in the bogie or the locking pull ring. When the electromagnet is energized, a magnetic force is generated to attract the bogie and the locking pull ring. The locking pull ring drives the locking ring to move upward to tighten the conical surface between the locking pull ring and the locking ring to the middle guide rod. When the electromagnet is not energized, the magnetic force is lost, the locking pull ring falls, so that the locking ring and the locking sleeve are not in contact, and the middle guide rod can move freely.

7. The wheel lever brake mechanism according to claim 2, characterized in that: The locking pull ring is rotatably connected to the compression spring guide rod.

8. The wheel lever brake mechanism according to claim 7, characterized in that: The locking pull ring is rotatably connected to the compression spring guide rod by a pin shaft.

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