Buoyancy and gravity combined energy supply

By designing a buoyant gravity combined energy supply device, the baffle is opened by using the movement of the second box and the barrier of the top rod, and the water flows to the guide groove and enters the second track, the problems of energy waste and cost increase in the prior art are solved, and the effective collection of water flow and energy conversion are achieved.

CN119801863APending Publication Date: 2025-04-11陈小华
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510081864.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2025-04-11

AI Technical Summary

Technical Problem

In the prior art, when using buoyancy and gravity to move objects, it is difficult to effectively utilize the energy brought by buoyancy and gravity, resulting in energy waste and increased costs.

Method used

A buoyant gravity combined energy supply device is designed to open the baffle through the movement of the second box and the blocking of the top rod, and the water flows to the guide groove, and enters the second track through the guide groove, so as to realize the collection of water flow and energy conversion.

Benefits of technology

The effective collection of water flow and energy conversion are achieved, reducing energy waste, reducing costs, and enabling the device to be used and operated more easily.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119801863A_ABST
    Figure CN119801863A_ABST
Patent Text Reader

Abstract

The invention is suitable for the technical field of gravity transmission, and provides a base, the top of the base is fixedly connected with two first sliding rails and two second sliding rails, the tops of the first sliding rails and the second sliding rails are fixedly connected with a top plate, and the interior of the base is fixedly connected with a water tank. The second sliding rail is arranged between the first sliding rail and the water tank, the bottom of the top plate is fixedly connected with two symmetrical first supporting rods, the interiors of the two first supporting rods are rotationally connected with first pulleys, and the surfaces of the first pulleys are in transmission connection with first connecting ropes. After the second box body moves to a certain position, a supporting rod is blocked through an ejector rod, so that a baffle is opened, water flow in the second box body flows to a flow guide groove, the water flow flows to a second track through the flow guide groove, the second track moves downwards, a first track is reset, and meanwhile the water flow enters the reservoir through the second track to be collected.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the field of gravity transmission technology, and more specifically, to buoyancy-gravity combined energy supply. Background Art

[0002] Objects immersed in liquid are affected by buoyancy and gravity at the same time. When buoyancy is greater than gravity, the object floats up in the liquid and finally floats on the surface of the liquid. At this time, the gravity is equal to the buoyancy. When the buoyancy is equal to the gravity, the object is suspended in the liquid; when the buoyancy is less than the gravity, the object sinks in the liquid.

[0003] At present, buoyancy and gravity both need to do work when acting on objects to make them move. If their energy is not utilized, it is easy to cause energy waste. At the same time, when workers use other energy, it is easy to increase costs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a buoyancy-gravity combined energy supply.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The buoyancy and gravity combination power supply includes a base, the top of the base is fixedly connected with a first slide rail and a second slide rail, the number of the first slide rail and the second slide rail are both two, the tops of the first slide rail and the second slide rail are fixedly connected with a top plate, the inside of the base is fixedly connected with a water tank, the second slide rail is arranged between the first slide rail and the water tank, the bottom of the top plate is fixedly connected with two symmetrical first support rods, the insides of the two first support rods are rotatably connected with the first pulley, the surface of the first pulley is transmission-connected with the first connecting rope, one end of the first connecting rope is fixedly connected with the first box body, the other end of the first connecting rope is fixedly connected with the second box body, the second box body is arranged inside the water tank, the first track and the second track are arranged between the two second slide rails, the first box body is arranged between the first track and the second track, the surface of the first box body is fixedly connected with two symmetrical first sliders, the surface of the first slider is slidably connected to the inside of the first slide rail, one side of the second track is fixedly connected with an extension tube, and the inside of the extension tube is rotatably connected with two one-way doors through a torsion spring.

[0007] The present invention is further configured as follows: two symmetrical third slide rails are fixedly connected inside the water tank.

[0008] The present invention is further configured such that: the second box is arranged between two third slide rails.

[0009] The present invention is further configured as follows: first rotating shafts are fixedly connected to both sides of the first track and the second track, and the surface of the first rotating shaft is fixedly connected to the inside of the second slide rail.

[0010] The present invention is further configured as follows: a baffle is slidably connected inside the second box body, a slide groove is opened inside the second box body, a second slider fixedly connected to the baffle is slidably connected inside the slide groove, a magnet is provided on one side of the second slider, two symmetrical bottom rods are fixedly connected to the bottom of the baffle, and a counterweight is fixedly connected to the bottom of the bottom rod.

[0011] The present invention is further configured as follows: two symmetrical support rods are fixedly connected to the top of the baffle, and a top rod is fixedly connected to one side of the third slide rail.

[0012] The present invention is further configured as follows: two symmetrical bottom plates are arranged inside the second box body, a groove is opened in the second box body, a second rotating shaft fixedly connected to the bottom plate is rotatably connected inside the groove, a reset torsion spring is fixedly connected to the side of the bottom plate close to the groove, an end of the reset torsion spring away from the bottom plate is fixedly connected to the inner wall of the groove, the reset torsion spring is movably sleeved on the second rotating shaft, and a protrusion is arranged at the bottom of the second box body.

[0013] The present invention is further configured as follows: a water tank is fixedly connected between the two second slide rails, a pulley block is provided at the bottom of the top plate, a water pumping frame is provided inside the water tank, the water pumping frame is connected to the second box body after passing through the pulley block through a transmission rope and connecting to the first support rod, a water guide slide is fixedly connected to the top of the water tank, a baffle and a support rod are also provided on the side of the water pumping frame close to the water guide slide, and an L-shaped top frame is fixedly connected to one side of the second slide rail.

[0014] The present invention is further configured as follows: a baffle is also provided on one side of the first box body close to the second box body, two symmetrical power push rods are fixedly connected to the bottom of the baffle on the first box body, and a positioning groove is provided inside the first track.

[0015] The advantages of the present invention are:

[0016] 1. The present invention uses a combination of buoyancy and gravity for energy supply. After the second box moves to a certain position, the top rod blocks the support rod, so that the baffle is opened, and the water inside the second box flows to the guide groove, and the water flows to the second track through the guide groove. The second track moves downward and resets the first track. At the same time, the water flows into the interior of the reservoir through the second track for collection, and the water inside the second box is discharged, so that the staff can use the device to collect the water inside the second box more conveniently, and the device can be connected to an external device, so that the kinetic energy of the device's up and down reciprocating movement can be converted into other energy.

[0017] 2. The present invention uses a combination of buoyancy and gravity to supply energy. Through the cooperation of the protrusion and the reset torsion spring, the bottom plate can only be opened upward, so that the water flow can be better contained inside the second box, and the device can run more smoothly, allowing the staff to use the device more conveniently.

[0018] 3. The present invention uses a combination of buoyancy and gravity to supply energy. The counterweight first contacts the lower surface of the inside of the water tank, and the second box body continues to move downward, thereby realizing the closing and resetting of the baffle to the second box body. The position of the baffle is fixed by a magnet, and the automatic opening and closing of the baffle is realized, so that the staff can use the device more conveniently and the device can run more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the buoyancy-gravity combination energy supply of the present invention;

[0020] Figure 2 is a schematic structural diagram of the first track of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the second box of the present invention;

[0022] Figure 4 It is a schematic diagram of the planar structure of the second box body of the present invention;

[0023] Figure 5 is a schematic diagram of the planar structure of the second sliding block of the present invention;

[0024] Figure 6 It is a schematic diagram of the planar structure of the bottom plate of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the water storage tank of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the water pumping frame of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the pulley block of the present invention;

[0028] Fig.10 It is a schematic diagram of the planar structure of the extension tube of the present invention.

[0029] In the figure: 1. base; 2. water tank; 3. water reservoir;

[0030] 4. First slide rail; 5. Second slide rail; 6. Third slide rail; 7. First support rod; 8. First pulley; 9. First connecting rope;

[0031] 10. first box body; 11. second box body; 12. top plate; 13. positioning groove; 14. power push rod; 15. groove; 16. first track; 17. second track; 18. first rotating shaft; 19. first sliding block;

[0032] 20. baffle; 21. support rod; 22. bottom rod; 23. counterweight; 24. top rod; 25. slideway; 26. second slide block; 27. bottom plate; 28. second rotating shaft; 29. ​​reset torsion spring;

[0033] 30. Pulley block; 31. Water guide slide; 32. Extension pipe; 33. One-way door; 34. L-shaped top frame; 35. Water pumping frame. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0037] See also Figure 1-10The present invention provides the following technical solutions: buoyancy and gravity combined energy supply, including a base 1, the base 1 is fixed on the ground, the top of the base 1 is fixedly connected with a first slide rail 4 and a second slide rail 5, the number of the first slide rail 4 and the second slide rail 5 are both two, the top of the first slide rail 4 and the second slide rail 5 is fixedly connected with a top plate 12, the inside of the base 1 is fixedly connected with a water tank 2, the bottom of the water tank 2 extends to the inside of the ground, the second slide rail 5 is arranged between the first slide rail 4 and the water tank 2, the bottom of the top plate 12 is fixedly connected with two symmetrical first support rods 7, the insides of the two first support rods 7 are both rotatably connected There is a first pulley 8, the surface of the first pulley 8 is connected to the first connecting rope 9, the first connecting rope 9 can slide on the surface of the two first pulleys 8, one end of the first connecting rope 9 is fixedly connected to the first box 10, the other end of the first connecting rope 9 is fixedly connected to the second box 11, the second box 11 is arranged inside the water tank 2, a first track 16 and a second track 17 are arranged between the two second slide rails 5, the first track 16 extends to the inside of the water tank 2, the weight of the second box 11 is greater than the weight of the first box 10, the second box 11 is formed by the fence plate enclosure, so that the second box The side plate of the water tank 11 is provided with meshes, and the second box 11 is in the water flow. By putting the iron ball into the first box 10, the weight of the first box 10 can be increased, and the first box 10 drives the second box 11 to move upward through the first connecting rope 9. The surface of the first box 10 is fixedly connected with two symmetrical first sliders 19, and the surface of the first slider 19 is slidably connected with the inside of the first slide rail 4. An extension pipe 32 is fixedly connected to one side of the second rail 17. The inside of the extension pipe 32 is rotatably connected with two one-way doors 33 through a torsion spring. The extension pipe 32 is located at the water tank 2. Inside, the extension tube 32 is closed through the one-way rotation of the two one-way doors 33, so that the iron ball hits the first one-way door 33, and the first one-way door 33 opens, allowing the iron ball to enter between the two one-way doors 33. At this time, the extension tube 32 is closed by the second one-way door 33. When the iron ball pushes the second one-way door 33 to rotate, the extension tube 32 is sealed by the first one-way door 33, thereby reducing the water flow inside the water tank 2 entering the second track 17, and allowing the iron ball to enter the second box body 11 more smoothly. The iron ball is a hollow iron ball.

[0038] Specifically, two symmetrical third slide rails 6 are fixedly connected inside the water tank 2 , and the second box body 11 is arranged between the two third slide rails 6 , so that the moving direction of the second box body 11 is positioned and limited by the two third slide rails 6 .

[0039] The first track 16 and the second track 17 are both fixedly connected with a first rotating shaft 18 on both sides, and the surface of the first rotating shaft 18 is fixedly connected to the inside of the second slide rail 5. A positioning groove 13 is opened inside the first track 16, and the positioning groove 13 can drain water. At the same time, the iron ball can be positioned to a certain extent through the positioning groove 13. When the iron ball inside the second box body 11 slides out, the iron ball inside the second box body 11 hits the iron ball on the positioning groove 13, and the iron ball on the positioning groove 13 enters the inside of the first box body 10.

[0040] The second box body 11 is slidably connected to the inside of the baffle 20, and a slide groove 25 is opened inside the second box body 11. The slide groove 25 is slidably connected to the inside of the second slider 26 which is fixedly connected to the baffle 20. A magnet is provided on one side of the second slider 26, and the position of the baffle 20 can be positioned and fixed by the magnet. The baffle 20 can be moved up and down to close and open the second box body 11, and the water flow inside the second box body 11 can be discharged. Two symmetrical bottom rods 22 are fixedly connected to the bottom of the baffle 20, and a counterweight block 23 is fixedly connected to the bottom of the bottom rod 22. The weight of the counterweight block 23 is greater than the weight of the baffle 20.

[0041] Two symmetrical support rods 21 are fixedly connected to the top of the baffle 20, and a top rod 24 is fixedly connected to one side of the third slide rail 6. The top rod 24 blocks the support rod 21, so that the baffle 20 can move downward during the upward movement of the second box 11, so that the second box 11 is opened to discharge. When the second box 11 and the counterweight 23 move downward inside the water tank 2, the counterweight 23 first contacts the lower surface of the inside of the water tank 2, and the second box 11 continues to move downward, thereby realizing the closing and resetting of the baffle 20 to the second box 11, and through The magnet fixes the position of the baffle 20 and realizes automatic opening and closing of the baffle 20, so that the staff can use the device more conveniently and the device can run more smoothly. A baffle 20 is also provided on the side of the first box body 10 close to the second box body 11. Two symmetrical power push rods 14 are fixedly connected to the bottom of the baffle 20 on the first box body 10. When the first box body 10 falls, the power push rods 14 contact with the base 1, so that the baffle 20 on the box body 10 opens, and the iron ball inside the first box body 10 slides to the inside of the second track 17.

[0042] The staff places an iron ball inside the first box body 10 to make the first box body 10 descend, and the first box body 10 drives the second box body 11 to move upward through the first connecting rope 9. When the second box body 11 moves to a certain position, the top rod 24 blocks the support rod 21, so that the baffle 20 opens, and the iron ball inside the second box body 11 flows to the inside of the first track 16, and the water flow inside the second box body 11 is discharged.

[0043] A water reservoir 3 is fixedly connected between the two second slide rails 5, and the water reservoir 3 can collect water flow. A pulley block 30 is provided at the bottom of the top plate 12, and a water pumping frame 35 is provided inside the water reservoir 3. The water flow inside the water reservoir 3 can be contained by the water pumping frame 35. The water pumping frame 35 passes through the pulley block 30 and is connected to the second box body 11 after being connected to the first support rod 7 through a transmission rope, so that the second box body 11 descends and the water pumping frame 35 rises, and at the same time, the water pumping frame 35 is moved by the pulley block 30. 5 is high enough, the top of the water tank 2 is fixedly connected with a water guide slide 31, and the side of the water pumping frame 35 close to the water guide slide 31 is also provided with a baffle 20 and a support rod 21. By opening the baffle 20, the water flow inside the water pumping frame 35 can be discharged into the water tank 2 through the water guide slide 31. One side of the second slide rail 5 is fixedly connected with an L-shaped top frame 34, and the side plate of the water pumping frame 35 can be opened more smoothly through the L-shaped top frame 34, so as to discharge the water flow.

[0044] Two symmetrical bottom plates 27 are arranged inside the water pumping frame 35. The water pumping frame 35 is provided with a groove 15. The inside of the groove 15 is rotatably connected to a second rotating shaft 28 fixedly connected to the bottom plate 27. A reset torsion spring 29 is fixedly connected to the side of the bottom plate 27 close to the groove 15. The end of the reset torsion spring 29 away from the bottom plate 27 is fixedly connected to the inner wall of the groove 15. The reset torsion spring 29 is movably sleeved on the second rotating shaft 28. The reset torsion spring 29 can be compressed and reset by rotating the bottom plate 27. A protrusion is arranged at the bottom of the water pumping frame 35. Through the mutual cooperation of the protrusion and the reset torsion spring 29, the bottom plate 27 can only be opened upward, so that the water flow can be better contained in the water pumping frame 35.

[0045] The water pumping frame 35 moves downward, so that the water flow hits the bottom plate 27 and the bottom plate 27 opens, so that the water flow enters the water pumping frame 35 and is collected by the water pumping frame 35. When the water pumping frame 35 moves upward, the bottom plate 27 can only be opened upward through the cooperation of the protrusion and the return torsion spring 29, so that the water flow can be better contained in the water pumping frame 35, and the device can run more smoothly, so that the staff can use the device more conveniently.

[0046] Working principle: Buoyancy and gravity combined energy supply. When starting, you only need to manually drop the iron ball into the first box 10. Since the iron ball is a hollow iron ball, its weight in the air is much greater than its weight in the water, so that the first box 10 descends, and the first box 10 drives the second box 11 to move upward through the first connecting rope 9. At the same time, when the second box 11 moves upward, the bottom plate 27 can only be opened upward through the cooperation of the protrusion and the reset torsion spring 29, so that the water flow can flow in the first box 10. When the second box 11 moves to a certain position, the top rod 24 blocks the support rod 21, so that the baffle 20 is opened, and the iron ball inside the second box 11 flows to the inside of the first track 16. At the same time, the water frame 35 moves downward, so that the water flow hits the bottom plate 27, and the bottom plate 27 is opened, so that the water flow enters the water frame 35, and the water flow is collected by the water frame 35. The first box 10 falls to the bottom, and the first box 10 is opened by the support rod 21 provided at the bottom of the first box 10. When the two boxes move to the top and bottom of the present invention respectively, the switch will be automatically triggered to slide the hollow iron ball in the box. After the ball in the second box 11 slides out of the box, it will hit the iron ball in the first track 16, so that the iron ball in the first track 16 is knocked out and the ball in the second box 11 is stuck in the positioning groove 13, so that the water in the pool will not be lost too much, and the knocked out iron ball will stay on the side close to the first box 10. After the iron ball slides out, the second box 11 will hit the iron ball in the first track 16. The box 11 is heavier than 1 / 2 of the weight of the first box 10. At this time, the second box 11 will sink and the first box 10 will rise. When the two boxes move to their respective tops and bottoms, the switch will be triggered again, allowing the iron ball that stays on one side close to the first box 10 to enter the first box 10. This cycle is repeated over and over again, so that the first box 10 keeps making repeated up and down vertical movements. Finally, the repeated vertical up and down movements of this design are used to provide external functions, thereby achieving the purpose of providing energy by a combination of buoyancy and gravity.

[0047] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Buoyancy and gravity combined energy supply, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a first slide rail (4) and a second slide rail (5), the number of the first slide rail (4) and the number of the second slide rail (5) are both two, the top of the first slide rail (4) and the second slide rail (5) are fixedly connected to a top plate (12), the inside of the base (1) is fixedly connected to a water tank (2), the second slide rail (5) is arranged between the first slide rail (4) and the water tank (2), the bottom of the top plate (12) is fixedly connected to two symmetrical first support rods (7), the inside of the two first support rods (7) are both rotatably connected to a first pulley (8), the surface of the first pulley (8) is transmission-connected to a first connecting rope (9), one end of the first connecting rope (9) is fixedly connected to the first tank The first box (10) is provided with a first connecting rope (9), the other end of which is fixedly connected to a second box (11), the second box (11) being arranged inside the water tank (2), a first track (16) and a second track (17) being arranged between the two second slide rails (5), the first box (10) being arranged between the first track (16) and the second track (17), the surface of the first box (10) being fixedly connected to two symmetrical first sliders (19), the surface of the first sliders (19) being slidably connected to the inside of the first slide rail (4), one side of the second track (17) being fixedly connected to an extension tube (32), the inside of the extension tube (32) being rotatably connected to two one-way doors (33) via a torsion spring.

2. The buoyancy-gravity combined energy supply according to claim 1, characterized in that: Two symmetrical third slide rails (6) are fixedly connected inside the water tank (2).

3. The buoyancy-gravity combined energy supply according to claim 2 is characterized in that: The second box body (11) is arranged between two third slide rails (6).

4. The buoyancy-gravity combined energy supply according to claim 1, characterized in that: A first rotating shaft (18) is fixedly connected to both sides of the first track (16) and the second track (17), and the surface of the first rotating shaft (18) is fixedly connected to the inside of the second slide rail (5).

5. The buoyancy-gravity combined energy supply according to claim 4 is characterized in that: The second box body (11) is slidably connected to a baffle (20) inside, a slide groove (25) is provided inside the second box body (11), a second slider (26) fixedly connected to the baffle (20) is slidably connected inside the slide groove (25), a magnet is provided on one side of the second slider (26), the bottom of the baffle (20) is fixedly connected to two symmetrical bottom rods (22), and a counterweight (23) is fixedly connected to the bottom of the bottom rods (22).

6. The buoyancy-gravity combined energy supply according to claim 5, characterized in that: Two symmetrical support rods (21) are fixedly connected to the top of the baffle (20), and a top rod (24) is fixedly connected to one side of the third slide rail (6).

7. The buoyancy-gravity combined energy supply according to claim 6, characterized in that: Two symmetrical bottom plates (27) are arranged inside the second box body (11). The second box body (11) is provided with a groove (15). A second rotating shaft (28) fixedly connected to the bottom plate (27) is rotatably connected inside the groove (15). A reset torsion spring (29) is fixedly connected to a side of the bottom plate (27) close to the groove (15). An end of the reset torsion spring (29) away from the bottom plate (27) is fixedly connected to the inner wall of the groove (15). The reset torsion spring (29) is movably sleeved on the second rotating shaft (28). A protrusion is arranged at the bottom of the second box body (11).

8. The buoyancy-gravity combined energy supply according to claim 1, characterized in that: A water reservoir (3) is fixedly connected between the two second slide rails (5), a pulley block (30) is arranged at the bottom of the top plate (12), a water pumping frame (35) is arranged inside the water reservoir (3), the water pumping frame (35) is connected to the second box body (11) after passing through the pulley block (30) and the first support rod (7) through a transmission rope, a water guide slide (31) is fixedly connected to the top of the water tank (2), a baffle (20) and a support rod (21) are also arranged on the side of the water pumping frame (35) close to the water guide slide (31), and an L-shaped top frame (34) is fixedly connected to one side of the second slide rail (5).

9. The buoyancy-gravity combined energy supply according to claim 1, characterized in that: A baffle (20) is also provided on one side of the first box body (10) close to the second box body (11); two symmetrical power push rods (14) are fixedly connected to the bottom of the baffle (20) on the first box body (10); and a positioning groove (13) is provided inside the first track (16).