Pulley speed reducer

Abstract

The utility model relates to a tackle speed reducer which comprises a fixing frame, a rotating frame arranged above the fixing frame and provided with one end hinged to the fixing frame, and a plurality of rubber sheets evenly arranged on the two sides of the top of the rotating frame in the advancing direction of a tackle, and a rotating cam is rotationally assembled at the end, away from the hinged position of the fixing frame and the rotating frame, of the fixing frame. The rotating cam is located below the rotating frame, and the rotating cam can abut against the bottom face of the rotating frame and drive the rotating frame to rotate upwards in the upward rotating process, so that the tackle moves from low to high on the rotating frame. A plurality of grooves in one-to-one correspondence with the rubber sheets are formed in the top of the rotating frame, compression springs stretching out and drawing back in the direction perpendicular to the length extension direction of the rotating frame are arranged between the bottom faces of the grooves and the bottom faces of the corresponding rubber sheets, and the compression springs are used for jacking the rubber sheets upwards so that the rubber sheets can make friction contact with the tackle. The technical problems that a pulley is slow in speed reduction and long in braking distance are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of amusement equipment, and in particular relates to a pulley deceleration device. Background Art

[0002] A children's slide is an amusement facility that slides along a fixed track. It is suitable for both children and adults. There are some ups and downs and turns in the design of the slide to increase the fun. Some slides dive down near the end at a faster speed. The prior art usually adopts a single method of increasing friction to slowly reduce the speed of the slide to zero, which results in slow deceleration and a long braking distance, increasing the cost of slide construction. Utility Model Content

[0003] The utility model provides a pulley deceleration device to solve the technical problems of slow deceleration and long braking distance of the pulley.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A pulley deceleration device comprises a fixed frame, a rotating frame arranged above the fixed frame and hinged to the fixed frame at one end, and a plurality of rubber sheets evenly arranged on both sides of the top of the rotating frame along the forward direction of the pulley, the fixed frame is rotatably equipped with a rotating cam at one end away from the hinged position of the fixed frame and the rotating frame, the rotating cam is located below the rotating frame, and the rotating cam can press the bottom surface of the rotating frame and drive the rotating frame to rotate upward during the upward rotation process, so that the pulley moves from low to high on the rotating frame; the top of the rotating frame is provided with a plurality of grooves corresponding to the rubber sheets one by one, and a compression spring is provided between the bottom surface of the groove and the bottom surface of the corresponding rubber sheet in a direction perpendicular to the length extension direction of the rotating frame, and the compression spring is used to press the rubber sheet upward to make the rubber sheet in friction contact with the pulley.

[0006] The beneficial effects are: the rotating frame rotates upward, and the pulley moves from the lowest point to the highest point of the rotating frame when it needs to decelerate, and is decelerated by the gravity of the pulley itself; when the pulley moves upward along the rotating frame, the pulley presses the rubber sheet downward in a direction perpendicular to the top surface of the rotating frame, pressing the rubber sheet into the groove, and the deceleration process of the pulley is smooth; the compression spring is compressed, and the elastic potential energy generated by the compression spring increases the friction between the rubber sheet and the pulley, so that the pulley is decelerated under the action of friction; the pulley is decelerated by the superposition of gravity and friction, the deceleration is fast, and the braking distance is short.

[0007] Furthermore, the rotating cam is rotatably connected to a rotating shaft one, the axis of the rotating shaft one is parallel to the axis around which the rotating cam rotates, the rotating shaft one is vertically connected to a long rod, the fixed frame is rotatably connected to a support rod parallel to the rotating shaft one and perpendicular to the long rod, the long rod is slidably guided and connected to the support rod along the extension direction of the long rod, and the end of the support rod away from the rotating shaft one rotates downward to drive the rotating cam to rotate upward.

[0008] Furthermore, one end of the support rod is rotatably connected to the fixed frame through a rotating bearing, and the other end is fixedly provided with a linear bearing, and the long rod is installed in the linear bearing.

[0009] The beneficial effect is that the rotating cam is driven to rotate through the lever principle, which saves more effort when driving the rotating frame to rotate.

[0010] Furthermore, the end of the long rod facing away from the rotating cam is vertically connected to a handle, the handle is parallel to the top surface of the rotating frame and the end of the handle faces away from the rotating frame.

[0011] The beneficial effect is that the arrangement of the handle end away from the rotating frame can reduce the length of the support rod while facilitating the rotation of the long rod, reduce the load that the support rod needs to bear, and prevent the support rod from being damaged during the rotation of the long rod.

[0012] Furthermore, a fixing plate is fixed on the fixing frame, and a first connecting bolt is rotatably mounted on the fixing plate, and a stud end of the first bolt is used for pressing and contacting the rotating cam to fix the rotating cam.

[0013] The beneficial effect is that after the rotating cam lifts up one end of the rotating frame, the driving bolt presses the rotating cam to fix the rotating cam, thereby increasing the stability of the rotating cam and preventing the rotating cam from suddenly rotating downward during the upward movement of the pulley, causing the rotating frame to rotate and endangering the personal safety of tourists.

[0014] Furthermore, the rubber sheet has a guiding slope for facing the pulley.

[0015] The beneficial effect is that the setting of the inclined surface makes it convenient for the pulley to cover the top surface of the rubber sheet, thereby protecting the rubber sheet and preventing severe bumps from occurring during the deceleration process of the pulley.

[0016] Furthermore, a mounting frame is detachably connected to the groove, a movable plate is provided in the mounting frame for guiding and sliding along a direction perpendicular to the length of the rotating frame, the rubber sheet is located on the top surface of the movable plate, and the compression spring is located between the bottom surface of the movable plate and the bottom surface of the mounting frame.

[0017] The beneficial effect is that the mounting frame can be detachably connected in the groove, and the replacement and maintenance of the spring are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the installation structure of the long rod, the rotating cam and the bolt one;

[0020] Figure 3 is a schematic diagram of the structure of the mounting frame;

[0021] Figure 4 This is a schematic diagram of the structure of the second embodiment of the utility model;

[0022] Description of reference numerals:

[0023] 1. Fixed frame; 2. Rotating frame; 3. Rubber sheet; 4. Rotating shaft 2; 5. Rotating cam; 6. Rotating shaft 3; 7. Rotating shaft 1; 8. Long rod; 9. Support rod; 10. Rotating bearing; 11. Linear bearing; 12. Handle; 13. Fixed plate; 14. Bolt 1; 15. Groove; 16. Mounting frame; 17. Bolt 2; 18. Moving plate; 19. Protruding edge 1; 20. Compression spring; 21. Through hole 1; 22. Through hole 2; 23. Inclined surface; 24. Protruding edge 2; 25. Bolt 3. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] A pulley deceleration device comprises a fixed frame 1, a rotating frame 2 which is arranged above the fixed frame 1 and rotates up and down, and a plurality of rubber sheets 3 which are evenly arranged on both sides of the top of the rotating frame 2 along the forward direction of the pulley. One end of the rotating frame 2 is rotatably connected to the fixed frame 1 through a second rotating shaft 4. A rotating cam 5 for driving the rotating frame 2 to rotate is provided on the fixed frame 1. Two rotating cams 5 are provided, which are respectively located below both sides of the other end of the rotating frame 2. The rotating cams 5 are rotatably connected to the fixed frame 1 through a third rotating shaft 6. The rotating cams 5 rotate upward to press the bottom surface of the rotating frame 2 to drive the rotating frame 2 to rotate upward around the second rotating shaft 4. The pulley slides down from a high place and then slides toward the rotating frame 2, moving from the lowest point to the highest point of the rotating frame 2, and decelerating by its own gravity.

[0027] In order to facilitate the rotation of the rotating cam 5, a through hole 21 is provided on the rotating cam 5, and a rotating shaft 7 is installed in the through hole 21. The rotating shaft 7 is parallel to the rotating shaft 3 6, and the rotating shaft 7 is rotatably connected to the rotating cam 5. In this embodiment, the rotating cam 5 is a cylindrical structure, and the rotating shaft 7 and the rotating shaft 3 6 are respectively located on both sides of the axis of the rotating cam 5; the rotating shaft 7 is vertically connected to the long rod 8, and the support rod 9 parallel to the rotating shaft 7 and perpendicular to the long rod 8 is rotatably connected to the fixed frame 1. One end of the support rod 9 is rotatably connected to the fixed frame 1 through a rotating bearing 10, and a linear bearing 11 is fixed at the other end of the support rod 9. The long rod 8 is installed in the linear bearing 11 so that it can be slidably guided and connected to the support rod 9 along the extension direction of the long rod 8. At this time, the end of the support rod 9 away from the rotating shaft 7 rotates downward, which can drive the rotating cam 5 to rotate upward around the rotating shaft 3 6, and the rotation of the rotating cam 5 is realized by using the lever principle, which is convenient to use.

[0028] If the long rod 8 is close to the fixed frame 1, it is easy to squeeze the staff's hand when the long rod 8 is rotated downward; if the long rod 8 is far from the fixed frame 1, the load that the support rod 9 needs to bear is too large, and the support rod 9 is easy to be damaged during the downward rotation of the long rod 8; in order to protect the staff and reduce the load on the support rod 9, the end of the long rod 8 away from the rotating cam 5 is vertically connected to the handle 12, the handle 12 is parallel to the top surface of the rotating frame 2 and the end of the handle 12 is away from the rotating frame 2.

[0029] After the rotating frame 2 rotates upward, in order to increase the stability of the rotating cam 5 and prevent the rotating cam 5 from suddenly rotating downward during the upward movement of the pulley, causing the rotating frame 2 to rotate and endangering the personal safety of tourists, an L-shaped fixing plate 13 is fixed on the fixed frame 1, and a bolt 14 is threadedly connected to the fixing plate 13. The bolt 14 is parallel to the rotating shaft 3 6. After the rotating cam 5 is rotated upward, the bolt 14 is screwed so that the stud end of the bolt 14 presses against the rotating cam 5 to fix the rotating cam 5.

[0030] A plurality of grooves 15 are provided on the top of the rotating frame 2, and a mounting frame 16 is detachably connected in the groove 15. The top surface of the mounting frame 16 is flush with the top surface of the rotating frame 2, and bolts 17 are installed between the bottom surface of the mounting frame 16 and the inner wall of the groove 15, and the mounting frame 16 is detachably connected in the groove 15; a movable plate 18 is provided in the mounting frame 16, and convex edges 19 are provided on both sides of the movable plate 18. The convex edge 19 contacts the inner wall of the mounting frame 16 to limit the movable plate 18 from sliding along the guide direction perpendicular to the length extension direction of the rotating frame 2. The rubber sheet 3 is located on the top surface of the movable plate 18 and can be fixedly installed on the movable plate 18 by bolts or the like, so as to facilitate the replacement of the rubber sheet 3; the two ends of the compression spring 20 are respectively fixed on the bottom surface of the movable plate 18 and the bottom surface of the mounting frame 16, and a through hole 22 is provided on the top surface of the mounting frame 16 for the upper part of the movable plate 18 and the rubber sheet 3 to enter and exit the groove 15. Due to the obstruction of the convex edge 19, the movable plate 18 cannot be moved up and out of the mounting frame 16.

[0031] In order to protect the rubber sheet 3 and prevent the edges of the rubber sheet 3 from being squeezed when the pulley covers the rubber sheet 3, the rubber sheet 3 is provided with an inclined surface 23 for guiding the pulley in the direction facing the pulley; when the pulley covers the rubber sheet 3, the rubber sheet 3 moves down into the groove 15, the compression spring 20 is compressed, and the top surface of the rubber sheet 3 is pressed against the bottom surface of the pulley. The friction between the top surface of the rubber sheet 3 and the bottom surface of the pulley causes the speed of the pulley to decrease rapidly. Under the dual effects of friction and gravity, the pulley is rapidly decelerated to zero.

[0032] Embodiment 2

[0033] like Figure 4 The second embodiment of the utility model is shown. The difference between this embodiment and the first embodiment is that two convex edges 24 are fixed on both sides of the mounting frame 16, and the two convex edges 24 are fixedly mounted on the fixing frame 1 by three bolts 25. The top surface of the three bolts 25 is flush with the top surface of the fixing frame 1 or lower than the top surface of the fixing frame 1, and the top surface of the two convex edges 24, the top surface of the mounting frame 16 and the top surface of the rotating frame 2 are flush.

Claims

1. A pulley reduction device, characterized in that: The invention comprises a fixed frame (1), a rotating frame (2) arranged above the fixed frame (1) and hinged to the fixed frame (1) at one end, and a plurality of rubber sheets (3) uniformly arranged on both sides of the top of the rotating frame (2) along the advancing direction of the pulley, wherein one end of the fixed frame (1) away from the hinged position of the fixed frame (1) and the rotating frame (2) is rotatably equipped with a rotating cam (5), wherein the rotating cam (5) is located below the rotating frame (2), and during the upward rotation process, the rotating cam (5) can press the bottom surface of the rotating frame (2) and drive the rotating frame (2) to rotate upward, so that the pulley moves from low to high on the rotating frame (2); a plurality of grooves (15) corresponding to the rubber sheets (3) are arranged on the top of the rotating frame (2), and a compression spring (20) is arranged between the bottom surface of the groove (15) and the bottom surface of the corresponding rubber sheet (3) and is retracted in a direction perpendicular to the length extension direction of the rotating frame (2), and the compression spring (20) is used to press the rubber sheet (3) upward so that the rubber sheet (3) is in friction contact with the pulley.

2. A pulley reduction device according to claim 1, characterized in that: The rotating cam (5) is rotatably connected to a rotating shaft (7), the axis of the rotating shaft (7) is parallel to the axis around which the rotating cam (5) rotates, the rotating shaft (7) is vertically connected to a long rod (8), the fixed frame (1) is rotatably connected to a support rod (9) parallel to the rotating shaft (7) and vertical to the long rod (8), the long rod (8) is slidably guided and connected to the support rod (9) along the extension direction of the long rod (8), and the end of the support rod (9) away from the rotating shaft (7) rotates downward to drive the rotating cam (5) to rotate upward.

3. A pulley reduction device according to claim 2, characterized in that: One end of the support rod (9) is rotatably connected to the fixed frame (1) via a rotating bearing (10), and the other end is fixedly provided with a linear bearing (11), and the long rod (8) is installed in the linear bearing (11).

4. A pulley reduction device according to claim 3, characterized in that: The end of the long rod (8) facing away from the rotating cam (5) is vertically connected to a handle (12); the handle (12) is parallel to the top surface of the rotating frame (2) and the end of the handle (12) faces away from the rotating frame (2).

5. A pulley reduction device according to any one of claims 1 to 4, characterized in that: A fixing plate (13) is fixed on the fixing frame (1), and a rotatable connecting bolt (14) is mounted on the fixing plate (13). The stud end of the bolt (14) is used to press against the rotating cam (5) to fix the rotating cam (5).

6. A pulley reduction device according to claim 5, characterized in that: The rubber sheet (3) is provided with a guiding inclined surface (23) for facing the pulley.

7. A pulley reduction device according to claim 6, characterized in that: A mounting frame (16) is detachably connected to the groove (15), a movable plate (18) is provided in the mounting frame (16) for sliding guidance along a direction perpendicular to the length of the rotating frame (2), the rubber sheet (3) is located on the top surface of the movable plate (18), and the compression spring (20) is located between the bottom surface of the movable plate (18) and the bottom surface of the mounting frame (16).

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