Chain transmission device

Abstract

The utility model discloses a chain transmission device. The chain transmission device comprises a fixed rack; the limiting device has the advantages that the supporting frame, the first limiting roller and the second limiting roller are arranged, the first limiting roller and the second limiting roller are supported by the supporting frame, the first limiting roller and the second limiting roller rotate on the inner side of the supporting frame, and therefore the limiting roller and the second limiting roller can rotate on the inner side of the supporting frame; the moving position of a chain is limited through a first limiting roller and a second limiting roller, the problems of loosening and slipping between the chain and a transmission chain wheel and the influence on the stability of a transmission device are avoided, an inner sliding frame and a tensioning chain wheel are arranged, and the output end of an air cylinder drives the inner sliding frame to conduct limiting sliding adjustment on the inner side of a bottom fixing frame; the tensioning chain wheel is driven by the inner sliding frame to adjust the height position, the tensioning degree of the chain is adjusted through the tensioning chain wheel, and the tensioning degree is convenient to adjust.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission device technical field, concretely is a chain transmission device. BACKGROUND

[0002] Chain transmission device is a mechanical power transmission system, it uses chain to transmit power from one place to another, chain transmission device usually is composed of two or more sprocket and chain itself, the hole on the chain link is installed on the sprocket tooth, when the prime mover rotates, the chain that is wound on the shaft sprocket also rotates, and mechanical force is exerted to the driven shaft, thereby transmitting mechanical power, but the chain currently used lacks necessary limiting component, not only easy to appear the looseness between chain and sprocket in the running process even slip problem, and the adjustment of tightness also appears not enough convenient, which further limits its application universality and reliability, and obviously exposes the limitation of design and use. SUMMARY

[0003] The utility model discloses a chain transmission device to solve the problem that the chain currently used lacks necessary limiting component, not only easy to appear the looseness between chain and sprocket in the running process even slip problem, and the adjustment of tightness also appears not enough convenient, which further limits its application universality and reliability, and obviously exposes the limitation of design and use.

[0004] To achieve the above object, the utility model provides the following technical scheme: a chain transmission device, comprising:

[0005] Fixed frame;

[0006] Support top frame, support top frame symmetry sets up at the top of fixed frame;

[0007] Transmission sprocket, transmission sprocket rotation sets up in the inside of support top frame, and the outside of two transmission sprockets is provided with chain, and the transmission sprocket is connected through chain transmission between two transmission sprockets;

[0008] Limiting component, limiting component symmetry is placed in the top of fixed frame, and the limiting component includes no.

[0009] Bottom fixed frame, bottom fixed frame sets up at the bottom of fixed frame;

[0010] Inner sliding frame, inner sliding frame sliding sets up in the inside of bottom fixed frame, and the inside of inner sliding frame is rotationally provided with the chain wheel of tensioning that cooperates with chain.

[0011] As a preferred scheme of the utility model: still include fixed bolster, fixed bolster is fixedly connected in one side of fixed frame, the top of fixed bolster is fixedly connected with fixed top box, the inside of fixed top box is rotatably provided with rotating rod, one of transmission sprocket is fixedly connected with rotating rod.

[0012] As a preferred scheme of the utility model: the outside of rotating rod is fixedly connected with worm wheel, the inside of fixed top box is rotatably provided with worm, worm is connected with worm wheel meshing.

[0013] As a preferred scheme of the utility model: the top of fixed bolster is installed motor, the output of motor is fixedly connected with worm.

[0014] As a preferred scheme of the utility model: the bottom of bottom fixed bolster is installed air cylinder, the output of air cylinder is fixedly connected with inner sliding frame, the bottom of inner sliding frame is fixedly connected with multiple limit slide rods, and limit slide rod is slidably connected with bottom fixed bolster.

[0015] As a preferred scheme of the utility model: the top of fixed frame is fixedly connected with support frame, and the first limit roller and the second limit roller are rotatably connected with the support frame.

[0016] Compared with the prior art, the utility model has the advantages that: the utility model is provided with support frame, first limit roller and second limit roller, which can support the first limit roller and second limit roller, and the first limit roller and second limit roller rotate on the inside of support frame, the movement position of chain is limited by the first limit roller and second limit roller, so that the looseness and slipping between chain and transmission sprocket are avoided, and the stability of transmission device is affected, the output end of air cylinder drives inner sliding frame to limit sliding adjustment on the inside of bottom fixed bolster, the height position is adjusted by inner sliding frame and tension sprocket, the tension of chain is adjusted by tension sprocket, and the tension is conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is overall structure schematic view of the utility model;

[0018] Figure 2 It is bottom fixed bolster structure schematic view of the utility model;

[0019] Figure 3 It is tension sprocket structure schematic view of the utility model;

[0020] Figure 4 It is fixed top box internal structure schematic view of the utility model.

[0021] In the figure: 1, fixed rack; 2, support top frame; 3, transmission sprocket; 4, support frame; 5, No. 1 limiting roller; 6, No. 2 limiting roller; 7, chain; 8, bottom fixed frame; 9, air cylinder; 10, inner sliding frame; 11, tension sprocket; 12, limiting slide rod; 13, fixed support; 14, fixed top box; 15, worm; 16, rotating rod; 17, worm gear; 18, motor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1 to 4 The present application provides a technical solution: a chain transmission device, comprising: a fixed rack 1; a support top frame 2 symmetrically fixed to the top of the fixed rack 1; a transmission sprocket 3 rotatably arranged on the inner side of the support top frame 2, the outer sides of the two transmission sprockets 3 are provided with a chain 7, and the two transmission sprockets 3 are transmissionally connected through the chain 7; a limiting assembly symmetrically arranged on the top of the fixed rack 1, the limiting assembly comprising a No. 1 limiting roller 5, the No. 1 limiting roller 5 symmetrically arranged above the fixed rack 1, the No. 1 limiting roller 5 cooperating with the chain 7, the top of the fixed rack 1 symmetrically provided with a No. 2 limiting roller 6 cooperating with the chain 7; a bottom fixed frame 8 fixed to the bottom of the fixed rack 1; an inner sliding frame 10 slidably arranged on the inner side of the bottom fixed frame 8, the inner side of the inner sliding frame 10 rotatably provided with a tension sprocket 11 cooperating with the chain 7.

[0024] It can be understood that the utility model discloses a height position of the inner sliding frame 10 and the tensioning sprocket 11 is adjusted by the output end of the cylinder 9, the inner sliding frame 10 drives the limiting slide rod 12 to slide with the bottom fixed frame 8 when moving, the tightness of the chain 7 is adjusted through the tensioning sprocket 11, the chain 7 will be lengthened and slip and drop after being used for a period of time, at this moment, the chain 7 needs to be removed and connected again and then mounted, due to the length shortening, the chain 7 is loosened after the tensioning sprocket 11 is moved upwards, the height position of the inner sliding frame 10 and the tensioning sprocket 11 is adjusted after mounting, so that the tightness of the chain 7 is moderate, the worm 15 is rotated through the output end of the motor 18, the meshed worm wheel 17 is rotated when the worm 15 rotates, the rotating rod 16 on the inside is rotated when the worm wheel 17 rotates, one of the transmission sprockets 3 is rotated when the rotating rod 16 rotates, the other transmission sprocket 3 is rotated through the chain 7, the moving position of the chain 7 is limited through the first limiting roller 5 and the second limiting roller 6, so that the problems of loosening and slipping between the chain 7 and the transmission sprocket 3 are avoided.

[0025] Please refer to Figures 1 to 4 It also includes the fixed support 13, the fixed support 13 is fixedly connected on one side of the fixed frame 1, the top of the fixed support 13 is fixedly connected with the fixed top box 14, and the rotating rod 16 is rotatably arranged in the fixed top box 14.

[0026] It can be understood that the utility model discloses that the fixed top box 14 is supported and fixed through the fixed support 13, and the rotating rod 16 rotates in the fixed top box 14, and one of the transmission sprockets 3 is rotated through the rotating rod 16.

[0027] Please refer to Figures 1 to 4 The outside of the rotating rod 16 is fixedly connected with the worm wheel 17, the inside of the fixed top box 14 is rotatably provided with the worm 15, and the worm 15 is connected with the worm wheel 17 in a meshed mode.

[0028] It can be understood that the utility model discloses that the meshed worm wheel 17 is rotated when the worm 15 rotates, the rotating rod 16 on the inside is rotated through the worm wheel 17, one of the transmission sprockets 3 is rotated through the rotating rod 16, and the other transmission sprocket 3 is driven through the chain 7.

[0029] Please refer to Figures 1 to 4 The top of the fixed support 13 is provided with the motor 18, and the output end of the motor 18 is fixedly connected with the worm 15.

[0030] It can be understood that the utility model discloses a motor 18 output end drives the rotation of the worm 15, and the worm 15 drives the rotation of the meshed worm gear 17.

[0031] Please refer to Figures 1 to 4 The bottom of the bottom fixing frame 8 is provided with a cylinder 9, the output end of the cylinder 9 is fixedly connected with an inner sliding frame 10, the bottom of the inner sliding frame 10 is symmetrically fixedly connected with a plurality of limiting sliding rods 12, and the limiting sliding rods 12 are slidably connected with the bottom fixing frame 8.

[0032] It can be understood that the utility model drives the inner sliding frame 10 to slide on the inner side of the bottom fixing frame 8 through the output end of the cylinder 9, and the limiting sliding rods 12 at the bottom are limited to slide with the bottom fixing frame 8 through the inner sliding frame 10, so that the inner sliding frame 10 and the tension sprocket 11 can be limited and adjusted.

[0033] Please refer to Figures 1 to 4 The top of the fixed rack 1 is symmetrically fixedly connected with a support frame 4, a first limiting roller 5 and a second limiting roller 6 are rotatably connected with the support frame 4.

[0034] It can be understood that the utility model supports the first limiting roller 5 and the second limiting roller 6 through the support frame 4, and the moving position of the chain 7 is limited through the first limiting roller 5 and the second limiting roller 6.

[0035] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation of the utility model.

[0036] In addition, the terms "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features, therefore, the features limited by "first", "second", "third", "fourth" can be explicitly or implicitly included at least one feature.

[0037] In the utility model, unless another definite provision and limitation, the term "installation", "arrangement", "connection", "fixation", "screw connection" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for the ordinary skill of the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0038] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A chain drive, characterized in that Include: Fixed frame (1); Support top frame (2) is symmetrically arranged on the top of the fixed frame (1); Transmission sprocket (3), transmission sprocket (3) is rotatably arranged on the inner side of the support top frame (2), the outer side of the two transmission sprocket (3) is provided with a chain (7), the two transmission sprocket (3) is drivenly connected through the chain (7); Limiting assembly, the limiting assembly is symmetrically arranged on the top of the fixed frame (1), the limiting assembly comprises a limiting roller (5), the limiting roller (5) is symmetrically arranged above the fixed frame (1), the limiting roller (5) is matched with the chain (7), the top of the fixed frame (1) is symmetrically provided with a limiting roller (6) matched with the chain (7); Bottom fixed frame (8), bottom fixed frame (8) is arranged on the bottom of the fixed frame (1); The inner slide frame (10) is slidably arranged on the inner side of the bottom fixed frame (8), the inner side of the inner slide frame (10) is rotatably provided with a tension sprocket (11) matched with the chain (7).

2. A chain drive as claimed in claim 1, characterised in that: It also includes a fixed support (13), the fixed support (13) is fixedly connected to one side of the fixed frame (1), the top of the fixed support (13) is fixedly connected with a fixed top box (14), the inside of the fixed top box (14) is rotatably provided with a rotating rod (16), one of the transmission sprocket (3) is fixedly connected with the rotating rod (16).

3. A chain drive as claimed in claim 2, wherein: The outer side of the rotating rod (16) is fixedly connected with a worm wheel (17), the inside of the fixed top box (14) is rotatably provided with a worm (15), the worm (15) is meshed with the worm wheel (17).

4. A chain drive as claimed in claim 3, characterised in that: The top of the fixed support (13) is provided with a motor (18), the output end of the motor (18) is fixedly connected with the worm (15).

5. A chain drive as claimed in claim 1, wherein: The bottom of the bottom fixed frame (8) is provided with a pneumatic cylinder (9), the output end of the pneumatic cylinder (9) is fixedly connected with the inner slide frame (10), the bottom of the inner slide frame (10) is symmetrically fixedly connected with a plurality of limiting slide rods (12), the limiting slide rod (12) is slidably connected with the bottom fixed frame (8).

6. A chain drive as claimed in claim 1, characterised in that: The top of the fixed frame (1) is symmetrically fixedly connected with a support frame (4), the limiting roller (5) and the limiting roller (6) are rotatably connected with the support frame (4).

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