Fixed pulley structure and gravity energy storage device
By using fixed pulley structure and pressure sensor in the gravity energy storage system to detect the break of the pull rope, and using the brake to fix the pull rope to prevent the falling of the heavy object, the problem of heavy object slipping caused by the break of the wire rope in the prior art is solved, and the system safety and stability.
Patent Information
- Application Number
- CN202411482729.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2024-12-10
AI Technical Summary
When the wire rope breaks, the existing gravity energy storage system may cause all heavy objects units to slide down, causing system damage, and lack effective measures to prevent heavy objects from falling.
The fixed pulley structure is adopted, including a base, bracket, fixed pulley, draw rope, pressure sensor and brake. The brake is activated when the draw rope is broken by the pressure sensor to prevent heavy objects from falling and buffer the impact force through the elastic member.
It effectively prevents all heavy objects from falling off, ensures the safety and stability of the system, and avoids major damage caused by broken wire ropes.
Smart Images
Figure CN119103040A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of energy generation, and in particular to a fixed pulley structure and a gravity energy storage device. Background Art
[0002] Gravity energy storage is a storage method that achieves energy storage and release through the conversion of gravitational potential energy and electrical energy. Specifically, it uses the height difference to cooperate with electromechanical equipment to achieve the lifting or lowering of the energy storage block, thereby achieving energy storage and conversion. It is a highly sustainable innovative form of energy storage with the advantages of long discharge time, long cycle life, strong environmental adaptability and high safety. When there is surplus electricity generated by new energy, the surplus electricity is used to lift the energy storage block for "charging", and the gravitational potential energy is stored by raising the height of the heavy unit. When the power consumption is at its peak, the system lowers the energy storage block and uses gravity to do work to "discharge", converting the gravitational potential energy into electrical energy for release. Therefore, the gravity energy storage system is usually accompanied by the lifting and lowering of heavy objects, and wire ropes are often used to lift or lower heavy objects.
[0003] When the wire rope breaks, the entire row of weight units supported by the wire rope may slide down, causing great damage to the gravity energy storage system.
[0004] Therefore, there is an urgent need for a fixed pulley structure and a gravity energy storage device to solve the above technical problems. Summary of the invention
[0005] The purpose of the present invention is to provide a fixed pulley structure and a gravity energy storage device, which can determine whether a pull rope is broken and prevent all heavy objects from falling.
[0006] To achieve this object, the present invention adopts the following technical solutions:
[0007] The fixed pulley structure comprises:
[0008] Base;
[0009] A bracket, wherein the bracket and the base can slide relative to each other in a vertical direction;
[0010] An elastic member, wherein the elastic member enables the bracket to always have a movement tendency away from the base along the vertical direction;
[0011] A fixed pulley, the fixed pulley is mounted on the bracket;
[0012] A pull rope, wherein the fixed pulley supports the pull rope at the bottom, and the weights located on two opposite sides of the base in the first direction are connected by the pull rope;
[0013] A pressure sensor, the pressure sensor is used to obtain the magnitude of the force acting on the bracket along the vertical direction;
[0014] A brake, the brake is used to fix the pull rope and limit the descent of the weight;
[0015] The first direction, the axial direction of the fixed pulley and the vertical direction are perpendicular to each other.
[0016] As a preferred technical solution of the fixed pulley structure, a plurality of the fixed pulleys are provided, the plurality of fixed pulleys are spaced apart along the first direction, and the brake is installed between two adjacent fixed pulleys in the first direction.
[0017] As a preferred technical solution of the fixed pulley structure, the base is provided with a mounting groove along the vertical direction, the bottom of the bracket can be inserted into the mounting groove, and the elastic member is arranged in the mounting groove and clamped between the base and the bracket in the vertical direction.
[0018] As a preferred technical solution for the fixed pulley structure, the base is provided with a mounting column protruding from the bottom wall of the mounting groove, the axial direction of the mounting column is parallel to the vertical direction, the elastic member is a spring, which is sleeved on the mounting column, and the bottom of the bracket is in contact with the elastic member on the outer peripheral side of the mounting column.
[0019] As a preferred technical solution of the fixed pulley structure, the pressure sensor is mounted on the top end surface of the mounting column and can abut against the bracket along the vertical direction.
[0020] As a preferred technical solution of the fixed pulley structure, stirrups are provided on the top of the mounting column.
[0021] As a preferred technical solution for the above-mentioned fixed pulley structure, the above-mentioned bracket is an isosceles triangle structure, and the plurality of the above-mentioned fixed pulleys are symmetrically arranged on both sides of the perpendicular bisector of the base of the above-mentioned isosceles triangle. The top corner of the above-mentioned bracket is protruded with a plug-in portion, and the above-mentioned plug-in portion is inserted in the above-mentioned installation groove.
[0022] As a preferred technical solution for the fixed pulley structure, the brake comprises a first clamp, a second clamp and a first driving member, the first clamp and the second clamp are distributed on opposite sides of the pull rope in a radial direction, the first clamp is fixed to the bracket, and the second clamp, driven by the first driving member, can approach the first clamp and clamp the pull rope, or move away from the first clamp to release the pull rope.
[0023] A gravity energy storage device is also provided, comprising a second driving member, the above-mentioned weight and the above-mentioned fixed pulley structure, wherein the above-mentioned second driving member is connected to the head end and / or tail end of the above-mentioned pull rope, the pull rope between the above-mentioned second driving member and the above-mentioned fixed pulley structure carries the above-mentioned weight, and the above-mentioned second driving member can tighten or release the above-mentioned pull rope.
[0024] As a preferred technical solution of the above-mentioned constant gravity energy storage device, it also includes a movable pulley, the above-mentioned weight is installed on the above-mentioned movable pulley, and the above-mentioned pull rope supports the above-mentioned movable pulley at the bottom.
[0025] Beneficial effects of the present invention:
[0026] The present invention provides a fixed pulley structure and a gravity energy storage device, comprising a base, a bracket, a fixed pulley, an elastic member, a fixed pulley, a pull rope, a pressure sensor and a brake. The bracket and the base can slide relative to each other in the vertical direction; the elastic member enables the bracket to always have a tendency to move away from the base in the vertical direction; the fixed pulley is installed on the bracket; the fixed pulley supports the pull rope below, and the weights located on the two opposite sides of the base in the first direction are connected by the pull rope; the pressure sensor is used to obtain the magnitude of the force acting on the bracket in the vertical direction; the brake is used to fix the pull rope and limit the descent of the weight; the first direction, the axial direction of the fixed pulley and the vertical direction are perpendicular to each other.
[0027] Specifically, the base is relatively fixed to the ground, the support and the base can slide relative to each other in the vertical direction, a fixed pulley is installed on the support, the weight acts on the support through a pull rope, the pull rope bypasses the outer circumferential arc surface of the fixed pulley to achieve reversal, and the contact area is increased by the fixed pulley to avoid stress concentration; the support is provided with weights on both sides of the first direction, the two weights have equal mass, and are connected by the pull rope to achieve balance. The pressure sensor is used to obtain the magnitude of the resultant force in the vertical direction received by the support, assuming that the weights on both sides are connected by a pull rope, and the height of the weights from the ground is h, when h>0, the signal obtained by the pressure sensor is F1, at this time the brake is in an idle state and does not act on the pull rope, when the pull rope breaks, the weight cannot act on the support, at this time the signal obtained by the pressure sensor is F2, F2<F1, at this time, it is determined that the pull rope is broken, the brake is activated, the pull rope is fixed to prevent all the weights from falling, and the elastic member can buffer the impact force caused by the change of the force of the weight between the support and the base. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0029] Figure 1 is a structural schematic diagram of a fixed pulley structure provided by an embodiment of the present invention;
[0030] Figure 2 It is a structural schematic diagram of a gravity energy storage device provided in an embodiment of the present invention.
[0031] In the figure:
[0032] X, vertical direction; Y, first direction;
[0033] 100, base; 110, mounting groove; 120, mounting column;
[0034] 200, bracket; 300, elastic member; 400, fixed pulley; 500, pull rope; 600, pressure sensor; 700, brake; 710, first clamp; 720, second clamp; 730, control unit; 800, movable pulley; 900, weight. DETAILED DESCRIPTION
[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0039] like Figure 1 As shown, the present invention provides a fixed pulley structure, including a base 100, a bracket 200, a fixed pulley 400, an elastic member 300, a fixed pulley 400, a pull rope 500, a pressure sensor 600 and a brake 700. Among them, the bracket 200 and the base 100 can slide relative to each other along the vertical direction X; the elastic member 300 makes the bracket 200 always have a tendency to move away from the base 100 along the vertical direction X; the fixed pulley 400 is installed on the bracket 200; the fixed pulley 400 supports the pull rope 500 at the bottom, and the weights 900 located on the two sides of the base 100 opposite to each other in the first direction Y are connected by the pull rope 500; the pressure sensor 600 is used to obtain the magnitude of the force acting on the bracket 200 along the vertical direction X; the brake 700 is used to fix the pull rope 500 and limit the weight 900 from falling; the first direction Y, the axial direction of the fixed pulley 400 and the vertical direction X are perpendicular to each other.
[0040] Specifically, the base 100 is fixed relative to the ground, the support and the base 100 can slide relative to each other in the vertical direction X, a fixed pulley 400 is installed on the bracket 200, and the weight 900 acts on the bracket 200 through a pull rope 500. The pull rope 500 bypasses the outer circular arc surface of the fixed pulley 400 to achieve reversal, and the contact area is increased by the fixed pulley 400 to avoid stress concentration; the support is provided with weights 900 on both sides of the first direction Y, and the two weights 900 are of equal mass and are connected by the pull rope 500 to achieve balance. The pressure sensor 600 is used to obtain the magnitude of the resultant force in the vertical direction X applied to the support. Assume that the weights 900 on both sides are connected by a pull rope 500, and the height of the weight 900 from the ground is h. When h>0, the signal obtained by the pressure sensor 600 is F1. At this time, the brake 700 is in an idle state and does not act on the pull rope 500. When the pull rope 500 breaks, the weight 900 cannot act on the bracket 200. At this time, the signal obtained by the pressure sensor 600 is F2. F2<F1. At this time, it is determined that the pull rope 500 is broken, and the brake 700 is activated to fix the pull rope 500 to prevent all the weights 900 from falling. The elastic member 300 can buffer the impact force between the bracket 200 and the base 100 caused by the change in the force of the weight 900.
[0041] Furthermore, the base 100 is made of reinforced concrete. Optionally, a plurality of fixed pulleys 400 are provided, and the plurality of fixed pulleys 400 are arranged at intervals along the first direction Y, and the brake 700 is installed between two adjacent fixed pulleys 400 in the first direction Y.
[0042] Exemplarily, two fixed pulleys 400 are provided, and the two fixed pulleys 400 are spaced apart in the first direction Y, so that the points of force applied by the weight 900 to the bracket 200 can be dispersed to avoid stress concentration. The brake 700 can fix the pull rope 500 between the two fixed pulleys 400 to prevent the weight 900 connected to the pull rope 500 from falling.
[0043] It should be noted that when the position where the pull rope 500 is disconnected is between the two fixed pulleys 400 and within the range of action of the brake 700, the brake 700 can simultaneously fix the two sections of the pull rope 500, so that the weight 900 connected to the two sections of the pull rope 500 does not fall to the ground. However, when the position where the pull rope 500 is disconnected is located at other positions, such as the contact section between the pull rope 500 and the fixed pulley 400 or the contact section between the pull rope 500 and the weight 900, the brake 700 can only fix one section of the pull rope 500, and the weight 900 connected to the other end of the pull rope 500 falls to the ground.
[0044] Optionally, the base 100 has a mounting groove 110 along the vertical direction X, the bottom of the bracket 200 can be inserted into the mounting groove 110, and the elastic member 300 is disposed in the mounting groove 110 and clamped between the base 100 and the bracket 200 in the vertical direction X.
[0045] In this way, through the plug-in relationship between the base 100 and the bracket 200, the displacement of the bracket 200 relative to the base 100 along the vertical direction X can be regulated, and the elastic member 300 is placed in the installation groove 110, which can also limit the relative position of the elastic member 300 relative to the bracket 200 or the base 100. When the brake 700 only fixes one section of the pull rope 500, since only one heavy object 900 acts on the bracket 200, the bracket 200 is tilted, and the inner wall of the installation groove 110 can limit the bottom of the bracket 200, that is, the bottom of the bracket 200 is clamped in the installation groove 110 to prevent the bracket 200 from falling out of the installation groove 110 of the base 100.
[0046] Furthermore, the base 100 is installed with a first limiter, and the bracket 200 is installed with a second limiter, the second limiter is located below the first limiter, and the second limiter and the first limiter can abut against each other along the vertical direction X to prevent the bracket 200 from detaching from the base 100.
[0047] Optionally, the base 100 is provided with a mounting post 120 protruding from the bottom wall of the mounting groove 110, the axial direction of the mounting post 120 is parallel to the vertical direction X, the elastic member 300 is a spring, which is sleeved on the mounting post 120, and the bottom of the bracket 200 abuts against the elastic member 300 at the outer peripheral side of the mounting post 120. In this way, in the projection of the vertical direction X, the mounting groove 110 is annular, the elastic member 300 is sleeved outside the mounting post 120, and the mounting post 120 fills part of the space of the mounting groove 110, which can limit the deformation direction of the elastic member 300. The mounting post 120 and the inner peripheral wall of the mounting groove 110 limit and support the bottom of the bracket 200, which can prevent the bracket 200 from falling out of the mounting groove 110 of the base 100 when the bracket 200 is tilted.
[0048] Optionally, the pressure sensor 600 is mounted on the top end surface of the mounting column 120 and can abut against the bracket 200 along the vertical direction X. Specifically, the weights 900 on both sides of the first direction Y act on the bracket 200 through the pull rope 500, so that the bracket 200 compresses the elastic member 300 and approaches the base 100. At this time, the pressure sensor 600 is sandwiched between the bracket 200 and the base 100 to obtain the force along the vertical direction X received on the bracket 200.
[0049] Optionally, stirrups are provided at the top of the mounting column 120. In this way, the overall rigidity and strength of the material can be improved.
[0050] Optionally, the bracket 200 is an isosceles triangle structure, and a plurality of fixed pulleys 400 are symmetrically arranged on both sides of the perpendicular midline of the base of the isosceles triangle, and a plug-in portion is convexly provided at the top corner of the bracket 200, and the plug-in portion is inserted into the mounting groove 110. By utilizing the stability of the triangle, the bracket 200 is not easily deformed, and the symmetrical arrangement of the fixed pulleys 400 makes the bracket 200 evenly stressed on both sides of the first direction Y, making it easier to maintain balance.
[0051] Optionally, the brake 700 includes a first clamp 710, a second clamp 720 and a first driving member, and the first clamp 710 and the second clamp 720 are distributed on opposite radial sides of the pull rope 500. The first clamp 710 is fixed to the bracket 200, and the second clamp 720, driven by the first driving member, can approach the first clamp 710 and clamp the pull rope 500, or move away from the first clamp 710 to release the pull rope 500.
[0052] Specifically, when the brake 700 is in an idle state, the first clamp 710 and the second clamp 720 remain away from each other. When the signal obtained by the pressure sensor 600 indicates that the vertical force X applied to the bracket 200 suddenly decreases within a unit time, the first driving member is started to drive the second clamp 720 to move closer to the first clamp 710 to clamp the pull rope 500.
[0053] like Figure 2 As shown, a gravity energy storage device is also provided, including a second driving member, a weight 900 and the above-mentioned fixed pulley structure, the second driving member is connected to the head end and / or tail end of the pull rope 500, the pull rope 500 between the second driving member and the fixed pulley structure is equipped with the weight 900, and the second driving member can tighten or release the pull rope 500.
[0054] In this way, the second driving member converts electrical energy into gravitational potential energy of the weight 900 by tensioning the pull rope 500, thereby raising the weight 900 from the ground. When the second driving member releases the pull rope 500, the weight 900 descends, converting its gravitational potential energy into electrical energy.
[0055] Optionally, the gravity energy storage device further comprises a movable pulley 800, a weight 900 is mounted on the movable pulley 800, and a pull rope 500 supports the movable pulley 800 at the bottom. By using the movable pulley 800, the pull rope 500 can smoothly transition around the outer peripheral curved surface of the movable pulley 800, increase the contact area, and avoid stress concentration.
[0056] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. Fixed pulley structure, characterized in that: include: Base (100); A bracket (200), wherein the bracket (200) and the base (100) are capable of sliding relative to each other along a vertical direction (X); an elastic member (300), wherein the elastic member (300) enables the bracket (200) to always have a tendency to move away from the base (100) along the vertical direction (X); A fixed pulley (400), the fixed pulley (400) being mounted on the bracket (200); A pull rope (500), the fixed pulley (400) supports the pull rope (500) at the bottom, and the weights (900) located on two opposite sides of the base (100) in the first direction (Y) are connected via the pull rope (500); A pressure sensor (600), the pressure sensor (600) being used to obtain the magnitude of the force acting on the support (200) along the vertical direction (X); a brake (700), the brake (700) being used to fix the pull rope (500) and limit the descent of the weight (900); The first direction (Y), the axial direction of the fixed pulley (400), and the vertical direction (X) are perpendicular to each other.
2. The fixed pulley structure according to claim 1, characterized in that: A plurality of the fixed pulleys (400) are provided, and the plurality of the fixed pulleys (400) are arranged at intervals along the first direction (Y), and the brake (700) is installed between two adjacent fixed pulleys (400) in the first direction (Y).
3. The fixed pulley structure according to claim 2, characterized in that: The base (100) is provided with a mounting groove (110) along the vertical direction (X), the bottom of the bracket (200) can be inserted into the mounting groove (110), and the elastic member (300) is arranged in the mounting groove (110) and clamped between the base (100) and the bracket (200) in the vertical direction (X).
4. The fixed pulley structure according to claim 3, characterized in that: The base (100) is provided with a mounting column (120) protruding from the bottom wall of the mounting groove (110); the axial direction of the mounting column (120) is parallel to the vertical direction (X); the elastic member (300) is a spring, which is sleeved on the mounting column (120); and the bottom of the bracket (200) is in contact with the elastic member (300) at the outer peripheral side of the mounting column (120).
5. The fixed pulley structure according to claim 4, characterized in that: The pressure sensor (600) is mounted on the top end surface of the mounting column (120) and is capable of abutting against the bracket (200) along the vertical direction (X).
6. The fixed pulley structure according to claim 4, characterized in that: The top of the installation column (120) is provided with stirrups.
7. The fixed pulley structure according to claim 3, characterized in that: The bracket (200) is an isosceles triangle structure, and the plurality of fixed pulleys (400) are symmetrically arranged on both sides of the perpendicular bisector of the base of the isosceles triangle. The top corner of the bracket (200) is provided with a plug-in portion, and the plug-in portion is inserted into the installation groove (110).
8. The fixed pulley structure according to claim 1, characterized in that: The brake (700) includes a first clamp (710), a second clamp (720) and a first driving member. The first clamp (710) and the second clamp (720) are distributed on opposite sides of the pull rope (500) in the radial direction. The first clamp (710) is fixed to the bracket (200). When driven by the first driving member, the second clamp (720) can approach the first clamp (710) and clamp the pull rope (500), or move away from the first clamp (710) to release the pull rope (500).
9. A gravity energy storage device, characterized in that: It comprises a second driving member, the weight (900) and the fixed pulley structure according to any one of claims 1 to 8, wherein the second driving member is connected to the head end and / or tail end of the pull rope (500), the pull rope (500) between the second driving member and the fixed pulley structure carries the weight (900), and the second driving member can tighten or release the pull rope (500).
10. The gravity energy storage device according to claim 9, characterized in that: It also includes a movable pulley (800), the weight (900) is installed on the movable pulley (800), and the pull rope (500) supports the movable pulley (800) at the bottom.