Braking energy recovery device

Abstract

The invention relates to a braking energy recovery device which comprises a driving shaft. The transmission groove is a conical groove which is positioned at the end part of the driving shaft and is sunken inwards; a support; a first bracket; a support shaft; a parallel slide rail; the supporting shaft slides on the parallel sliding rails and reciprocates towards the outer side in the radial direction of the bottom face of the transmission groove from the axis overlapping position of the driving shaft. A driven shaft; a driven wheel; the energy recovery module is used for receiving and storing the mechanical energy transmitted from the driving shaft by virtue of the driven shaft when the driving shaft rotates; the braking system is a system for braking rotation of the driving shaft and synchronously controls the position of the supporting shaft, and has the advantages that in the weight descending process, mechanical energy of the driving shaft is transmitted through the driven wheel, the mechanical energy is transmitted to the energy recovery module to be stored, the resistance of the energy recovery module is utilized, torque needed by braking force is generated by means of the driven wheel, and the braking force is recovered. And cooperation in the braking process is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of energy saving, and in particular relates to a braking energy recovery device. Background Art

[0002] Energy recovery is the process of converting energy forms that cannot be stored and reused and are about to be wasted, such as heat energy, mechanical energy, light energy, etc., into electrical energy or other energy forms for storage and reuse. For example, solar energy recovery, vehicle vibration energy recovery, geothermal energy recovery, etc. In the automotive field, there are many applications of brake energy recovery technology. The excess energy released by the vehicle during braking or coasting is converted into electrical energy through a generator and then stored in a battery for subsequent acceleration. This battery can also power power-consuming devices in the vehicle, reducing dependence on the engine, fuel consumption and carbon dioxide emissions. It is commonly found in hybrid models and new energy models.

[0003] The inventor discovered in the study of the prior art that energy is also wasted during the crane hoisting operation. When a crane lifts a heavy object and lowers it, the potential energy of the heavy object decreases, so a large amount of braking force is required to control the descending speed of the hoisted object. This will convert the potential energy into other energy forms such as heat energy, which will be wasted in the braking system. Hoisting operations are an important and common application scenario in industrial production, so how to use the hoisting process, especially the energy recovery solution coordinated with the braking force, is the main problem at present.

[0004] Therefore, there is an urgent need for a technical solution that can recover part of the potential energy during the lifting process and participate in a certain amount of driving force. Summary of the invention

[0005] In order to overcome the technical problem of the lack of braking energy recovery in the hoisting field in the prior art, the inventor adopts the method of follow-up transfer of mechanical energy and utilizes the change of braking stroke to increase the power generation resistance to the operating torque of the equipment to achieve partial energy recovery and coordinated braking. The technical solution adopted by the present invention is: a braking energy recovery device, comprising:

[0006] Active shaft;

[0007] The transmission groove is a conical groove located at the end of the driving shaft and is recessed inwards;

[0008] The support is a rigid support body located laterally to the end of the driving shaft;

[0009] The first bracket is a frame body protruding from the support;

[0010] The supporting shaft is a shaft body parallel to the axis of the driving shaft;

[0011] Parallel slide rails, which are two or more rails parallel to the side walls of the transmission groove, with one end fixed to the first bracket and the other end facing the extension line of the axis of the driving shaft;

[0012] The support shaft slides on the parallel slide rails and reciprocates radially outward along the bottom surface of the transmission groove from the overlapping position of the driving shaft axis;

[0013] A driven shaft, which is sleeved inside the supporting shaft, and one end of which extends into the transmission groove;

[0014] A driven wheel is fixed to the side of the driven shaft extending into the transmission groove and is in contact with the inner wall of the transmission groove;

[0015] an energy recovery module, which receives and stores mechanical energy transmitted from the driving shaft by means of the driven shaft when the driving shaft rotates;

[0016] The brake system is a system for braking the rotation of the driving shaft and synchronously controls the position of the support shaft. When the brake system is not started, the support shaft is located at the extension line of the axis of the driving shaft.

[0017] Furthermore, the braking system comprises:

[0018] A second bracket protrudes from the frame of the support and is hinged to the support, or slides on the support toward the axis of the driving shaft;

[0019] A brake pad, which is fixed on the second bracket and changes with the position of the second bracket, fits against the outer wall of the driving shaft, and provides braking force;

[0020] The push rod is a rod-shaped body connected between the second bracket and the support shaft. The brake system controls the position of the support shaft with the help of the push rod.

[0021] Furthermore,

[0022] The push rod is connected to the second bracket and the support shaft in the form of a ball joint;

[0023] The number of the push rods is more than two parallel ones.

[0024] Furthermore, the parallel slide rails include:

[0025] The slide groove is a groove body along the movement direction of the support shaft;

[0026] A return spring, one end of which is fixed to the first bracket;

[0027] The support shaft is provided with a positioning protrusion extending into the slide groove at the position where it contacts the parallel slide rail, and the reset spring is connected to the positioning protrusion to provide a driving force for the support shaft to reset to the position of the extended line of the active shaft axis.

[0028] Furthermore,

[0029] The braking stroke of the brake system is smaller than the radius of the driving shaft.

[0030] Furthermore,

[0031] A separation groove is provided at the cone top of the transmission groove. When the driven wheel is located at the separation groove, the driven wheel is separated from the inner wall of the separation groove.

[0032] Furthermore,

[0033] The energy recovery module includes a power generation device, which stores the mechanical energy of the driving shaft during braking as electrical energy, and utilizes the resistance of the power generation device to provide additional braking force.

[0034] Furthermore,

[0035] The driving shaft is the shaft body of the lifting device, and during the descent process of the lifting device, part of the potential energy during the descent process in the hoisting state is recovered.

[0036] Furthermore,

[0037] The energy recovery module includes a spring to store the mechanical energy of the driving shaft during the braking process, and utilizes the resistance of the spring to provide additional braking force.

[0038] The beneficial effects of the present invention compared to the prior art are as follows: during the process of lowering heavy objects, the mechanical energy of the driving shaft is transmitted by the driven wheel, and the mechanical energy is transmitted to the energy recovery module for storage. At the same time, the support shaft changes with the change of the stroke position of the brake system. While changing the position of the driven wheel, the resistance of the energy recovery module is utilized, and the torque required for the braking force is generated with the help of the driven wheel, thereby achieving coordination during the braking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A top view of a specific embodiment of the present invention;

[0040] Figure 2 AA cross-sectional view of a specific embodiment of the present invention

[0041] Figure 3 It is a side view of a specific embodiment of the present invention;

[0042] Figure 4 It is a partial top view of a parallel slide rail according to a specific embodiment of the present invention;

[0043] Figure 5 It is a schematic diagram of a sliding structure of a parallel slide rail and a support shaft according to a specific embodiment of the present invention;

[0044] The annotations are:

[0045] 100-driving shaft; 110-transmission slot; 120-separation slot;

[0046] 200-support; 210-first support;

[0047] 300-brake system; 310-second bracket; 320-brake pad;

[0048] 400-energy recovery module; 410-support shaft; 420-parallel slide rail; 421-slide groove; 422-reset spring; 423-positioning protrusion; 430-push rod; 440-driven wheel; 450-driven shaft. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0050] In order to overcome the technical problem of the lack of braking energy recovery in the hoisting field in the prior art, the inventor adopts the method of follow-up transfer of mechanical energy and uses the change of braking stroke to increase the power generation resistance to the operating torque of the equipment to achieve partial energy recovery and coordinated braking. Figures 1 to 5 The specific implementation method adopts a technical solution of a braking energy recovery device, please refer to Figure 1 ,include:

[0051] Active shaft 100; It should be noted that although the active mechanism is limited to active shaft 100, for those skilled in the art, the brake disc extending from active shaft 100, or the disc corresponding to the strand passing through during the hoisting process, should be regarded as a deformation of active shaft 100 and belong to equivalent technical features. Active shaft 100 converts the potential energy of the hoisted object into mechanical energy of active shaft 100.

[0052] Of course, in some technical solutions, it is not just the braking of the driving shaft 100, but also includes the gear control of the rotating motor to control the descending speed. However, it is inevitable that there will be the involvement of braking-related systems. This technical solution is mainly to recover the energy associated with the braking system and coordinate braking.

[0053] The transmission groove 110 is a conical groove located at the end of the driving shaft 100 and is recessed inwards;

[0054] The support 200 is a rigid support body located at the side of the end of the driving shaft 100;

[0055] The first bracket 210 is a frame body protruding from the support 200;

[0056] The support shaft 410 is a shaft parallel to the axis of the driving shaft 100;

[0057] The parallel slide rails 420 are two or more rails parallel to the side walls of the transmission slot 110, one end of which is fixed on the first bracket 210 and the other end is toward the extended line of the axis of the driving shaft 100; see Figure 1 The position state of the support shaft 410 is to move outward along the radius from the center position of the driving shaft 100. Its purpose is that during the change of the braking stroke, when the braking force of the brake system 300 gradually increases, the braking torque of the driven shaft 450 on the driving shaft 100 also increases with the increase of the radius.

[0058] The support shaft 410 slides on the parallel slide rail 420 and reciprocates radially outward along the bottom surface of the transmission groove 110 from the overlapping position of the axis of the driving shaft 100;

[0059] The driven shaft 450 is sleeved inside the supporting shaft 410, and one end thereof extends into the transmission groove 110;

[0060] The driven wheel 440 is fixed to the side of the driven shaft 450 that extends into the transmission groove 110 and fits with the inner wall of the transmission groove 110. The structure of the driven wheel 440 can be the same or similar cone as the transmission groove 110, or it can be a disc or a pancake. Its purpose is to follow and transmit mechanical energy.

[0061] The energy recovery module 400 receives and stores the mechanical energy transmitted from the driving shaft 100 by means of the driven shaft 450 when the driving shaft 100 rotates;

[0062] The brake system 300 is a system for braking the rotation of the driving shaft 100 and synchronously controls the position of the support shaft 410. When the brake system 300 is not activated, the support shaft 410 is located at the extension line of the axis of the driving shaft 100.

[0063] In some embodiments, the braking system 300 includes:

[0064] The second bracket 310 protrudes from the frame of the support 200 and is hinged to the support 200 or slides on the support 200 toward the axis of the driving shaft 100;

[0065] A brake pad 320, wherein the brake pad 320 is fixed on the second bracket 310, and is attached to the outer wall of the driving shaft 100 as the position of the second bracket 310 changes, thereby providing a braking force;

[0066] The push rod 430 is a rod-shaped body connected between the second bracket 310 and the support shaft 410 . The brake system 300 controls the position of the support shaft 410 with the help of the push rod 430 .

[0067] In some embodiments, preferably,

[0068] The push rod 430 is connected to the second bracket 310 and the support shaft 410 in the form of a ball joint;

[0069] The number of the push rods 430 is more than two parallel ones.

[0070] In some other embodiments, see Figure 4 and 5 , the parallel slide rail 420 comprises:

[0071] The slide groove 421 is a groove body along the movement direction of the support shaft 410;

[0072] A return spring 422, one end of which is fixed to the first bracket 210;

[0073] The support shaft 410 is provided with a positioning protrusion 423 extending into the slide groove 421 at the contact position with the parallel slide rail 420 . The return spring 422 is connected to the positioning protrusion 430 to provide a driving force for the support shaft 410 to return to the position of the extended line of the axis of the driving shaft 100 .

[0074] In order to meet the braking travel requirements, preferably,

[0075] The braking stroke of the brake system 300 is smaller than the radius of the driving shaft 100 .

[0076] Please refer to 1 and 2. In other embodiments, in order to reduce the resistance generated by the energy recovery module 400 during normal operation, that is, to ensure that the energy recovery module 400 is separated from the driving shaft 100 when the brake system 300 is not working.

[0077] A separation groove 120 is provided at the cone top of the transmission groove 110 . When the driven wheel 440 is located at the separation groove 120 , the driven wheel 440 is separated from the inner wall of the separation groove 120 .

[0078] In some embodiments,

[0079] The energy recovery module 400 includes a power generation device, which stores the mechanical energy of the driving shaft 100 during the braking process as electrical energy, and uses the resistance of the power generation device to provide additional braking force.

[0080] The preferred application scenario of this embodiment is the field of hoisting, which converts the potential energy of the hoisted object during its descent into mechanical energy.

[0081] The driving shaft 100 is the shaft body of the lifting device, and during the descent process of the lifting device, part of the potential energy during the descent process in the hoisting state is recovered.

[0082] In other embodiments, the energy recovery module 400 may directly store mechanical energy and utilize the mechanical energy to assist the lifting action.

[0083] The energy recovery module 400 includes a spring to store the mechanical energy of the driving shaft 100 during the braking process, and utilizes the resistance of the spring to provide additional braking force.

[0084] During specific implementation: In the field of lifting, during the descent of the load, the potential energy will drive the driving shaft 100 to rotate. During this process, the brake system 300 will participate in braking to keep the load descending at a uniform speed or decelerating. At this time, the push rod 430 pushes the support shaft 410 to change its position, and the driven shaft 450 and the transmission groove 110 are based to transmit the mechanical energy of the driving shaft 100. The driven shaft 450 will use the driven shaft 450 to transmit the mechanical energy to the energy recovery module 400 to achieve energy storage. At the same time, no matter what form of energy recovery module 400 is used, resistance will be generated on the driven wheel 440 during the energy storage process. For example, resistance will be generated during the motor power generation process. This part of the resistance will change with the axial position of the driven wheel 440 relative to the driving shaft 100, and the torque will gradually increase. While the braking force of the brake system 300 increases, it assists in braking to achieve both braking and energy recovery.

[0085] The beneficial effects are: during the descent of heavy objects, the driven wheel is used to transmit the mechanical energy of the driving shaft, and the mechanical energy is transferred to the energy recovery module for storage. At the same time, the support shaft changes with the change of the stroke position of the brake system. While changing the position of the driven wheel, the resistance of the energy recovery module is used to generate the torque required for the braking force with the help of the driven wheel, thereby achieving coordination during the braking process.

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A braking energy recovery device, characterized in that: include: Active shaft (100); The transmission groove (110) is a conical groove located at the end of the driving shaft (100) and is recessed inwards; The support (200) is a rigid support body located laterally to the end of the driving shaft (100); A first bracket (210) is a frame body protruding from the support (200); The support shaft (410) is a shaft parallel to the axis of the driving shaft (100); A parallel slide rail (420), one end of which is fixed on the first bracket (210) and the other end of which is toward the extended line of the axis of the driving shaft (100), and two or more rails are parallel to the side wall of the transmission groove (110); The support shaft (410) slides on the parallel slide rail (420) and reciprocates radially outward along the bottom surface of the transmission groove (110) from the overlapping position of the axis of the driving shaft (100); A driven shaft (450) is sleeved inside the support shaft (410), with one end extending into the transmission groove (110); A driven wheel (440) is fixed to the side of the driven shaft (450) extending into the transmission groove (110) and is in contact with the inner wall of the transmission groove (110); An energy recovery module (400) receives and stores mechanical energy transmitted from the driving shaft (100) via the driven shaft (450) when the driving shaft (100) rotates; The brake system (300) is a system for braking the rotation of the driving shaft (100) and synchronously controls the position of the support shaft (410). When the brake system (300) is not activated, the support shaft (410) is located on the extension line of the axis of the driving shaft (100).

2. The braking energy recovery device according to claim 1, characterized in that: The brake system (300) comprises: A second bracket (310) protrudes from the frame of the support (200) and is hinged to the support (200) or slides on the support (200) toward the axial direction of the driving shaft (100); A brake pad (320), wherein the brake pad (320) is fixed on the second bracket (310), and as the position of the second bracket (310) changes, it is attached to the outer wall of the driving shaft (100) to provide braking force; The push rod (430) is a rod-shaped body connected between the second bracket (310) and the support shaft (410). The brake system (300) controls the position of the support shaft (410) with the help of the push rod (430).

3. The braking energy recovery device according to claim 2, characterized in that: The push rod (430) is connected to the second bracket (310) and the support shaft (410) in the form of a ball joint; The number of the push rods (430) is two or more and they are parallel.

4. The braking energy recovery device according to claim 1, characterized in that: The parallel slide rail (420) comprises: The slide groove (421) is a groove body along the movement direction of the support shaft (410); A return spring (422), one end of which is fixed to the first bracket (210); The support shaft (410) is provided with a positioning protrusion (423) extending into the slide groove (421) at the contact position with the parallel slide rail (420), and the return spring (422) is connected to the positioning protrusion (430) to provide a driving force for the support shaft (410) to return to the position of the extension line of the axis of the driving shaft (100).

5. The braking energy recovery device according to claim 1, characterized in that: The braking stroke of the braking system (300) is smaller than the radius of the driving shaft (100).

6. The braking energy recovery device according to claim 1, characterized in that: A separation groove (120) is provided at the cone top of the transmission groove (110); when the driven wheel (440) is located at the separation groove (120), the driven wheel (440) is separated from the inner wall of the separation groove (120).

7. The braking energy recovery device according to any one of claims 1 to 6, characterized in that: The energy recovery module (400) comprises a power generation device, which stores the mechanical energy of the driving shaft (100) during the braking process as electrical energy, and utilizes the resistance of the power generation device to provide additional braking force.

8. The braking energy recovery device according to claim 7, characterized in that: The driving shaft (100) is the shaft body of the lifting device, and during the descent of the lifting device, part of the potential energy during the descent process in the hoisting state is recovered.

9. The braking energy recovery device according to any one of claims 1 to 6, characterized in that: The energy recovery module (400) comprises a spring, which stores the mechanical energy of the driving shaft (100) during the braking process, and utilizes the resistance of the spring during the energy storage process to provide additional braking force.

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