Chain wheel speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to a chain wheel speed reducer which comprises a base, a first gear and a second gear, four supports are fixedly connected to the surface of the base, bearings are rotatably connected to the inner walls of the four supports, every two of the four bearings form a group, a transmission shaft is rotatably connected to the inner wall of one group of bearings, and a transmission shaft is rotatably connected to the inner wall of the other group of bearings. The two transmission shafts are fixedly connected with the first gear and the second gear correspondingly, an adjusting structure is arranged on the surface of the base, the adjusting structure comprises a plug pin inserted into the surface of a U-shaped frame in a sliding mode, an adjusting plate is connected to the inner wall of the U-shaped frame in a sliding mode, and a plurality of round holes are formed in the surface of the adjusting plate; the size of the plug pin is matched with the size of the round hole, a round rod is fixedly connected to the side, away from the base, of the adjusting plate, and an adjusting wheel is rotationally connected to the end, away from the adjusting plate, of the round rod. According to the utility model, the problem that the chain is elongated and loosened due to friction between the chain and the chain wheel is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, in particular to a sprocket reducer. Background Art

[0002] A reducer is a device used to reduce the speed of mechanical equipment. It uses a chain-driven reduction device to achieve the conversion of speed and torque through sprockets of different sizes connected by chains. Different sizes of sprockets can achieve different transmission ratios, and the torque will increase, thereby achieving the effect of deceleration or acceleration.

[0003] Existing related technologies often have the following defects: when the reducer is in use, the friction between the chain and the sprocket will cause the chain to stretch and relax, resulting in relative sliding between the chain and the sprocket, reducing transmission efficiency, increasing the risk of chain falling off, and possibly causing sudden failure of the mechanical equipment, resulting in safety accidents.

[0004] Therefore, the utility model provides a sprocket reducer. Utility Model Content

[0005] The utility model aims to solve the disadvantage in the prior art that the friction between the chain and the sprocket may cause the chain to stretch and relax, and proposes a sprocket reducer.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sprocket reducer, including a base and a first gear and a second gear, the surface of the base is fixedly connected with four brackets, the inner walls of the four brackets are rotatably connected with bearings, the four bearings are grouped in pairs, the inner walls of a group of bearings are rotatably connected with a transmission shaft, and the two transmission shafts are respectively fixedly connected to the first gear and the second gear, the surface of the base is provided with an adjustment structure, the adjustment structure includes a U-shaped frame surface with a pin slidably inserted, the inner wall of the U-shaped frame is slidably connected with an adjustment plate, the surface of the adjustment plate is provided with a plurality of circular holes, the size of the pins is adapted to the size of the circular holes, the side of the adjustment plate away from the base is fixedly connected with a round rod, and the end of the round rod away from the adjustment plate is rotatably connected with an adjustment wheel.

[0007] The effect achieved by the above components is: by setting the adjustment structure, it is easy to adjust the tightness of the connection between the chain and the sprocket, thereby avoiding the risk of the chain falling off and improving the transmission efficiency.

[0008] Preferably, a convex strip is fixedly connected to one side of the adjustment plate close to the base, a frame is slidably connected to the surface of the convex strip, and the frame is fixedly connected to the surface of the base.

[0009] The effect achieved by the above components is that the movement of the adjustment plate will drive the convex strip to move, and the movement of the convex strip will slide in the frame. The frame limits the movement path of the convex strip, and then limits the movement path of the adjustment wheel, avoiding rotation when the adjustment wheel is moved.

[0010] Preferably, a threaded rod penetrates the surface thread of the adjustment plate, and the threaded rod is rotatably connected to the surface of the base.

[0011] The effect achieved by the above components is that the rotation of the threaded rod drives the adjustment plate to move with the help of the thread, and the threaded rod reaches a position that is convenient for moving the adjustment plate, thereby facilitating the movement of the adjustment wheel.

[0012] Preferably, one end of the threaded rod away from the base is fixedly connected to a turntable, and the cross section of the turntable is in a "cross" shape.

[0013] The effects achieved by the above components are: the rotation of the turntable will drive the threaded rod to rotate, and the turntable can facilitate the rotation of the threaded rod.

[0014] Preferably, a lubrication structure is provided on the surface of the bracket, and the lubrication structure includes an oil box, the oil box is fixedly connected to the surface of the bracket, a rectangular plate is fixedly connected to the inner wall of the oil box, a sliding rod slides through the surface of the rectangular plate, a spring is sleeved on the arc surface of the sliding rod, two ends of the spring are respectively fixedly connected to the rectangular plate and the sliding rod, one end of the sliding rod is fixedly connected to a sphere, the size of the sphere is matched with the size of the oil outlet hole of the oil box, and a rotating ring is fixedly connected to the arc surface of the transmission shaft.

[0015] The effect achieved by the above components is: by setting the lubrication structure, it is easy to lubricate the bearings in the bracket, thereby improving the transmission efficiency and reducing energy loss.

[0016] Preferably, a sponge pad is fixedly connected to one side of the rotating ring close to the bearing, and the sponge pad is slidably connected to the surface of the bearing.

[0017] The effect achieved by the above components is that the rotating ring drives the sponge pad to slide on the surface of the bearing, and the sponge pad can evenly apply the lubricating oil on the surface of the lubricating oil.

[0018] Preferably, a baffle is slidably inserted on the surface of the oil box.

[0019] The effect achieved by the above components is that the baffle moves and slides in the oil box, thereby controlling the flow of the lubricating oil.

[0020] In summary:

[0021] 1. In the utility model, by setting an adjustment structure, the adjustment plate will drive the round rod to move when it moves, the movement of the round rod will drive the adjustment wheel to move, and the movement of the adjustment wheel will squeeze the chain until the chain is in a taut state, so as to facilitate the adjustment of the tightness of the connection between the chain and the sprocket, thereby avoiding the risk of the chain falling off and improving the transmission efficiency.

[0022] 2. In the utility model, by setting a lubrication structure, the rotation of the transmission shaft will drive the rotating ring to rotate. During the rotation of the rotating ring, the sphere will be intermittently squeezed. The sphere will slide in the oil outlet hole on the surface of the oil box under the squeezing. The lubricating oil in the oil box will flow out from the gap between the spheres in the oil outlet hole, and then fall to the position of the transmission shaft and the bearing bracket, thereby lubricating the bearing, thereby improving the transmission efficiency and reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0025] Figure 3 For this utility model Figure 2 A in the enlarged view;

[0026] Figure 4 It is a structural schematic diagram of the adjustment structure of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the support of the utility model;

[0028] Figure 6 It is a schematic diagram of the disassembled structure of the oil box of the utility model.

[0029] Legend: 1. Base; 2. Bracket; 3. Transmission shaft; 4. First gear; 5. Second gear; 6. Bearing; 7. Adjustment structure; 701. U-shaped frame; 702. Latch; 703. Adjustment plate; 704. Round hole; 705. Round rod; 706. Adjustment wheel; 707. Raised strip; 708. Frame; 709. Threaded rod; 710. Turntable; 8. Lubrication structure; 81. Oil box; 82. Rectangular plate; 83. Sliding rod; 84. Spring; 85. Sphere; 86. Rotating ring; 87. Sponge pad; 88. Baffle. DETAILED DESCRIPTION

[0030] Reference Figure 1As shown, the utility model provides a technical solution: a sprocket reducer, including a base 1 and a first gear 4 and a second gear 5. Four brackets 2 are fixedly connected to the surface of the base 1. The inner walls of the four brackets 2 are rotatably connected to bearings 6. The four bearings 6 are grouped in pairs, and the inner wall of a group of bearings 6 is rotatably connected to a transmission shaft 3. The two transmission shafts 3 are respectively fixedly connected to the first gear 4 and the second gear 5. The surface of the base 1 is provided with an adjustment structure 7. By providing the adjustment structure 7, it is convenient to adjust the tightness of the connection between the chain and the sprocket, thereby avoiding the risk of the chain falling off and improving the transmission efficiency. The surface of the bracket 2 is provided with a lubrication structure 8. By providing the lubrication structure 8, it is convenient to lubricate the bearings 6 in the bracket 2, thereby improving the transmission efficiency and reducing energy loss.

[0031] The specific settings and functions of the adjustment structure 7 and the lubrication structure 8 are described in detail below.

[0032] Reference Figure 2 and Figure 3 and Figure 4 As shown, in this embodiment: the adjustment structure 7 includes a U-shaped frame 701 on which a latch 702 is slidably inserted, an adjustment plate 703 is slidably connected to the inner wall of the U-shaped frame 701, a plurality of round holes 704 are opened on the surface of the adjustment plate 703, the size of the latch 702 matches the size of the round hole 704, a round rod 705 is fixedly connected to the side of the adjustment plate 703 away from the base 1, and an adjustment wheel 706 is rotatably connected to the end of the round rod 705 away from the adjustment plate 703. A convex strip 707 is fixedly connected to the side of the adjustment plate 703 close to the base 1, and a frame 708 is slidably connected to the surface of the convex strip 707, and the frame 708 is fixedly connected to the surface of the base 1. The movement of the adjustment plate 703 will drive the movement of the convex strip 707, and the movement of the convex strip 707 will slide in the frame 708, and the frame 708 reaches the limit of the moving path of the convex strip 707, thereby limiting the moving path of the adjustment wheel 706, and avoiding the rotation of the adjustment wheel 706 when moving. The surface thread of the adjustment plate 703 is penetrated by a threaded rod 709, and the threaded rod 709 is rotatably connected to the surface of the base 1. The rotation of the threaded rod 709 drives the adjustment plate 703 to move by means of the thread, and the threaded rod 709 is convenient for moving the adjustment plate 703, and then convenient for moving the position of the adjustment wheel 706. The end of the threaded rod 709 away from the base 1 is fixedly connected to a rotating disk 710, and the cross section of the rotating disk 710 is in a "cross" shape. The rotation of the rotating disk 710 drives the threaded rod 709 to rotate, and the rotating disk 710 is convenient for rotating the threaded rod 709.

[0033] Reference Figure 5 and Figure 6As shown, specifically, the lubrication structure 8 includes an oil box 81, which is fixedly connected to the surface of the bracket 2, and a rectangular plate 82 is fixedly connected to the inner wall of the oil box 81. A sliding rod 83 is slidably penetrated through the surface of the rectangular plate 82, and a spring 84 is sleeved on the arc surface of the sliding rod 83. The two ends of the spring 84 are respectively fixedly connected to the rectangular plate 82 and the sliding rod 83, and one end of the sliding rod 83 is fixedly connected to a sphere 85. The size of the sphere 85 is adapted to the size of the oil outlet of the oil box 81, and a rotating ring 86 is fixedly connected to the arc surface of the transmission shaft 3. A sponge pad 87 is fixedly connected to the side of the rotating ring 86 close to the bearing 6. The sponge pad 87 is slidably connected to the surface of the bearing 6. The rotating ring 86 drives the sponge pad 87 to slide on the surface of the bearing 6, and the sponge pad 87 can make the lubricating oil evenly spread on the surface of the lubricating oil. A baffle 88 is inserted in a sliding manner on the surface of the oil box 81, and the movement of the baffle 88 will slide in the oil box 81, thereby controlling the flow of the lubricating oil.

[0034] Working principle: the effect of the reducer is achieved by the first gear 4 and the second gear 5 working together with the chain. When the chain needs to be tightened after being installed on the first gear 4 and the second gear 5, first pull the latch 702, the latch 702 moves in the U-shaped frame 701 and gradually comes out of the round hole 704. When the latch 702 comes out of the round hole 704, turn the turntable 710, the rotation of the turntable 710 will drive the threaded rod 709 to rotate, the rotation of the threaded rod 709 will drive the adjustment plate 703 to move with the help of the thread, the adjustment plate 703 moves in the U-shaped frame 701, and the adjustment plate 703 moves. The movement of the convex strip 707 will drive the movement of the convex strip 707, and the movement of the convex strip 707 will slide in the frame 708. The frame 708 will limit the movement path of the convex strip 707, and then limit the movement path of the adjusting wheel 706 to avoid rotation when the adjusting wheel 706 is moved. When the adjusting plate 703 moves, it will drive the round rod 705 to move. The movement of the round rod 705 will drive the adjusting wheel 706 to move. The movement of the adjusting wheel 706 will squeeze the chain until the chain is in a taut state, and then press the pin 702, and the pin 702 will be inserted into the round hole 704 starting from the corresponding position, thereby limiting the position of the adjusting wheel 706.

[0035] When it is necessary to lubricate the bearing 6 in the bracket 2, first pour the lubricating oil into the oil box 81. The rotation of the transmission shaft 3 will drive the rotating ring 86 to rotate. During the rotation of the rotating ring 86, the ball 85 will be intermittently squeezed. The ball 85 will slide in the oil outlet hole on the surface of the oil box 81 under the squeezing. The movement of the gas will cause the sliding rod 83 to slide in the rectangular plate 82. The sliding of the sliding rod 83 will stretch the spring 84. At this time, the spring 84 is in a stretched state. When the ball 85 moves to a suitable position, the lubricating oil in the oil box 81 will flow out from the gap between the oil outlet and the ball 85, and then flow to the surface of the sponge pad 87 and then immerse in the sponge pad 87. At this time, the rotating ring 86 drives the sponge pad 87 to slide on the surface of the bearing 6. The sponge pad 87 can make the lubricating oil evenly spread on the surface of the lubricating oil. When it is necessary to control the flow of the lubricating oil, push the baffle 88. The movement of the baffle 88 will slide in the oil box 81, thereby controlling the flow of the lubricating oil.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

Claims

1. A sprocket reducer, comprising a base (1) and a first gear (4) and a second gear (5), wherein four brackets (2) are fixedly connected to the surface of the base (1), the inner walls of the four brackets (2) are rotatably connected to bearings (6), the four bearings (6) are arranged in groups of two, the inner walls of a group of bearings (6) are rotatably connected to a transmission shaft (3), the two transmission shafts (3) are fixedly connected to the first gear (4) and the second gear (5), respectively, and an adjustment structure (7) is provided on the surface of the base (1), characterized in that: The adjustment structure (7) comprises a U-shaped frame (701) having a latch (702) slidably inserted on the surface thereof, an adjustment plate (703) slidably connected to the inner wall of the U-shaped frame (701), a plurality of circular holes (704) being provided on the surface of the adjustment plate (703), the size of the latch (702) being matched with the size of the circular holes (704), a round rod (705) being fixedly connected to a side of the adjustment plate (703) away from the base (1), and an adjustment wheel (706) being rotatably connected to an end of the round rod (705) away from the adjustment plate (703).

2. A sprocket reducer according to claim 1, characterized in that: A convex strip (707) is fixedly connected to one side of the adjustment plate (703) close to the base (1); a frame (708) is slidably connected to the surface of the convex strip (707); and the frame (708) is fixedly connected to the surface of the base (1).

3. A sprocket reducer according to claim 1, characterized in that: A threaded rod (709) is threadedly penetrated through the surface of the adjustment plate (703), and the threaded rod (709) is rotatably connected to the surface of the base (1).

4. A sprocket reducer according to claim 3, characterized in that: One end of the threaded rod (709) away from the base (1) is fixedly connected to a turntable (710), and the cross section of the turntable (710) is in the shape of a cross.

5. A sprocket reducer according to claim 1, characterized in that: The surface of the bracket (2) is provided with a lubricating structure (8), the lubricating structure (8) comprising an oil box (81), the oil box (81) being fixedly connected to the surface of the bracket (2), the inner wall of the oil box (81) being fixedly connected to a rectangular plate (82), the surface of the rectangular plate (82) being slidably penetrated by a sliding rod (83), the arc surface of the sliding rod (83) being sleeved with a spring (84), the two ends of the spring (84) being respectively fixedly connected to the rectangular plate (82) and the sliding rod (83), one end of the sliding rod (83) being fixedly connected to a ball (85), the size of the ball (85) being adapted to the size of the oil outlet hole of the oil box (81), and the arc surface of the transmission shaft (3) being fixedly connected to a rotating ring (86).

6. A sprocket reducer according to claim 5, characterized in that: A sponge pad (87) is fixedly connected to one side of the rotating ring (86) close to the bearing (6), and the sponge pad (87) is slidably connected to the surface of the bearing (6).

7. A sprocket reducer according to claim 5, characterized in that: A baffle (88) is slidably inserted into the surface of the oil box (81).

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