CN215410008U

CN215410008U - Automatic chain transmission tensioning device

Info

Publication number: CN215410008U
Application number: CN202121517900.5U
Authority: CN
Inventors: 章勇; 孟新坤
Original assignee: Irico Hefei LCD Glass Co Ltd
Current assignee: Irico Hefei LCD Glass Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-04
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses an automatic chain transmission tensioning device, and belongs to the technical field of chain transmission. The chain tension device comprises a tension wheel meshed with one side of a chain, the tension wheel is installed on a fixing piece through a rotating shaft, sliding rods extending horizontally are arranged on two sides of the fixing piece, the bottom of the fixing piece is fixed on a mounting base through a compression spring, sliding grooves extending in the height direction are formed in positions, corresponding to the sliding rods, of the mounting base, and the sliding rods are matched and clamped in the sliding grooves. The utility model provides an automatic chain transmission tensioning device, which aims to automatically tension when a chain is loosened, send out an alarm signal when the limit value of automatic adjustment is exceeded, and enable an operator to replace the chain or readjust the tensioning device in time according to the alarm.

Description

Automatic chain transmission tensioning device

Technical Field

The utility model belongs to the technical field of chain transmission, and particularly relates to an automatic tensioning device for chain transmission.

Background

In the production and manufacturing process, various transmission parts are needed, and the chain transmission has the advantages of high transmission precision, long transmission distance, low use cost and the like, so that the chain transmission is widely applied to various industries. However, when a load is applied to the chain while the gears are rotating, the chain tends to be deformed inelastically or permanently, and the deformation becomes more pronounced as the load becomes larger. When the chain is pulled too long, the chain can rotate along with the gear to block the gear, so that the load of the motor is alarmed or the motor is directly burnt. Therefore, the operation and maintenance personnel are required to frequently detect the state of the chain, and the occurrence of accidents of the type is avoided. However, not only is the observation time-consuming and labor-consuming, but also the detection of an excessively long chain is not possible by an effective means. Based on this background, a mechanism capable of automatically adjusting tensioning needs to be designed, the tensioning is automatically performed when the chain is loosened, when the limit value of the automatic adjustment is exceeded, an alarm signal is sent out, and an operator can replace the chain or readjust the tensioning device in time according to the alarm.

Through retrieval, the prior patent about chain drive overspeed device tensioner has already been published, like chinese patent literature, patent application number 2016104166630, a chain drive overspeed device tensioner is published, including the take-up pulley, the take-up pulley is connected with the connecting rod, the connecting rod is connected the rack, the rack bottom sets up the slider, the slider is installed on the slide, correspond the slider and set up the spout on the slide, rack and gear engagement, the gear passes through the transmission shaft and connects drive arrangement, the transmission shaft passes through the bearing and installs on the bearing frame, drive arrangement all install on the slide, the slide bottom sets up the mounting panel, set up the slip subassembly between slide and the mounting panel, one side of slide sets up the cylinder, the cylinder is installed on the mounting panel. The driving device drives the gear to rotate, so that the rack is driven to move, the upper position and the lower position of the tensioning wheel are moved, the purpose of tensioning the chain is achieved, the working efficiency and the working quality are improved, and the tensioning degree can be accurately controlled.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model provides an automatic chain transmission tensioning device, which aims to automatically tension a chain when the chain is loosened, send out an alarm signal when the limit value of automatic adjustment is exceeded, and enable an operator to replace the chain or readjust the tensioning device in time according to the alarm.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model discloses a chain transmission automatic tensioning device, which comprises a tensioning wheel meshed with one side of a chain, wherein the tensioning wheel is installed on a fixing piece through a rotating shaft, sliding rods extending horizontally are arranged on two sides of the fixing piece, the bottom of the fixing piece is fixed on an installation base through a compression spring, a sliding groove extending in the height direction is formed in the position, corresponding to the sliding rods, of the installation base, and the sliding rods are clamped into the sliding groove in a matched mode.

As a further improvement of the utility model, a sensor is arranged on the mounting base and close to the outermost edge of the chute, and the sensor is connected with a computer of the operation room.

As a further improvement of the utility model, the fixing piece is of a U-shaped structure, the tensioning wheel is arranged at the U-shaped opening of the fixing piece, the fixing piece comprises two side walls which are arranged in parallel, the bottoms of the two side walls are connected with the connecting plate, and the bottom of the connecting plate is connected with the mounting base through the compression spring.

As a further improvement of the utility model, the mounting base comprises two side plates which are arranged on the outer sides of two side walls of the fixing piece in parallel, the two side plates are provided with chutes extending along the height direction, a fixing plate is connected between the two side plates, and the bottom of the fixing piece is connected with the fixing plate through a compression spring.

As a further improvement of the utility model, the center of the tension wheel is provided with a mounting hole, a rotating shaft is arranged in the mounting hole, and through holes for the rotating shaft to pass through are arranged at the positions of the two side walls of the fixing piece corresponding to the rotating shaft.

As a further improvement of the utility model, the bottom of the side plates at the two sides is connected with a bottom plate, and an avoiding cavity for the chain to pass through is arranged between the bottom plate and the fixed plate.

As a further improvement of the utility model, the bottom of the mounting base is provided with a mounting hole, a connecting bolt is arranged in the mounting hole, and the mounting base is fixed on a rack of the transmission mechanism through the connecting bolt.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) the utility model relates to a chain transmission automatic tensioning device, which is used for automatically tensioning the loosening of a chain and adjusting a chain transmission mechanism by utilizing the automatic retraction performance of a compression spring. And a compression spring is arranged on the adjusting mechanism, and when the chain is subjected to inelastic deformation under the action of load, the tensioning wheel and the tensioning wheel mounting bracket move backwards under the action of the resilience force of the spring so as to automatically tension the chain. When the chain is loosened and overlong and exceeds the rebound range of the spring, the spring rebounds to the original length to trigger the sensing device. When the sensing device senses the chain wheel, an alarm is given to remind an operator to replace the chain or adjust the tensioning device.

(2) According to the automatic chain transmission tensioning device, when the chain deforms under the action of load, the tensioning wheel and the fixing piece tension the chain outwards under the action of the compression spring, so that the two ends of the chain and the transmission gear are always kept in a better meshing state, the condition of chain loosening is avoided, the tensioning degree of the chain can be automatically adjusted, the phenomenon that the transmission part is blocked due to the loosening of the transmission chain or other unnecessary machine halt due to the loosening is effectively prevented, manual machine halt adjustment is not needed, the production efficiency is improved, and the service life of equipment is prolonged.

(3) According to the automatic chain transmission tensioning device, when the chain is subjected to inelastic deformation under the action of load, the tensioning wheel and the fixing piece move towards the outer side of the chain under the action of the resilience force of the compression spring, so that the chain is tensioned automatically. When the chain is loosened too long and exceeds the rebound range of the compression spring, the compression spring rebounds to the original length to trigger the sensing device (namely the sensor). When the sensor senses a position signal of the tensioning wheel, an alarm signal is sent out to remind an operator to replace the chain or adjust the tensioning device.

Drawings

FIG. 1 is a schematic view of an installation structure of a chain drive automatic tensioner of the present invention;

fig. 2 is a schematic structural view of the automatic tensioner of the present invention.

The reference numbers in the figures are:

110. a transmission gear; 120. a chain; 200. a tension wheel; 210. a rotating shaft; 220. a fixing member; 221. fixing the rod; 230. mounting a base; 231. a chute; 232. a side plate; 233. a fixing plate; 234. an avoidance cavity; 235. a base plate; 240. a sensor; 250. compressing the spring.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

In the process of belt transmission and chain transmission, the problem that a belt and a chain are stretched and even deformed easily under the action of long-time load is solved. Because the gear and the chain are in meshing transmission, if the chain is too long, the part which can cause the overlong part rotates along with the gear, the chain is easy to block, the motor is overloaded, gives an alarm, or even burns out, the production efficiency of a production line is influenced, and the service life of equipment is influenced. The chain transmission automatic tensioning device is needed to solve the problems, can automatically tension when a chain is too loose, and can automatically alarm when the chain exceeds the tensioning range to remind an operator that the chain needs to be replaced or the tensioning degree of the chain needs to be adjusted again. Referring to fig. 1 and 2, the chain transmission automatic tensioning device of the present embodiment includes a tensioning wheel 200 engaged with one side of the chain 120, the tensioning wheel 200 is located between the transmission gears 110 on both sides of the chain 120, and as shown in the orientation of fig. 1, the top of the tensioning wheel 200 in the present embodiment is engaged with the upper portion of the middle section of the chain 120, that is, the tensioning wheel 200 pushes the upper portion of the middle section of the chain 120 upward, so as to achieve effective tensioning of the chain transmission mechanism. In this embodiment, the tensioning wheel 200 is mounted on the fixing member 220 through the rotating shaft 210, sliding rods 221 extending horizontally are disposed on two sides of the fixing member 220, the bottom of the fixing member 220 is fixed on the mounting base 230 through the compression spring 250, one end of the compression spring 250 is mounted at the bottom of the movable tensioning wheel 200 and the fixing member 220, and the other end is mounted on the mounting base 230, when the chain 120 deforms under the action of a load, the tensioning wheel 200 and the fixing member 220 exert a tensioning action on the chain 120 to the outside under the action of the compression spring 250, so as to ensure that the two ends of the chain 120 are always kept in a good meshing state with the transmission gear 110, avoid the loosening of the chain 120, automatically adjust the tensioning degree of the chain 120, effectively prevent the transmission part from being stuck due to the loosening of the transmission chain 120, or avoid other unnecessary machine halt due to the loosening, and do not need manual machine halt adjustment, the production efficiency is improved and the service life of the equipment is prolonged.

In this embodiment, the mounting base 230 is provided with a sliding slot 231 extending in the height direction at a position corresponding to the sliding rod 221, that is, the sliding slot 231 extends in the tensioning direction of the chain 120, the sliding rod 221 is engaged into the sliding slot 231, and the sliding rod 221 slides in the sliding slot 231 under the action of the compression spring 250, so as to drive the fixing member 220 and the tensioning pulley 200 to move in the tensioning direction of the chain 120, that is, the tensioning pulley 200 moves upward or downward, and the tensioning degree of the chain 120 can be effectively adjusted. The tension pulley 200 is mounted on the conveying chain 120, and the tension pulley 200 and the fixing member 220 are a combination that can slide on the mounting base 230, and do not affect the original normal mechanical movement of the conveying chain 120.

In this embodiment, a sensor 240 is disposed on the mounting base 230 near the outermost edge of the slide groove 231, and the sensor 240 is connected to a computer of the operating room. In this embodiment, to automatically tension the chain 120, the transmission mechanism of the chain 120 is adjusted by the automatic retraction performance of the compression spring 250. When the chain 120 is elastically deformed under a load, the tension pulley 200 and the fixing member 220 move outward of the chain 120 by the resilient force of the compression spring 250, and the chain 120 is automatically tensioned. When the chain 120 is loosened too long to exceed the rebound range of the compression spring 250, the compression spring 250 will rebound to its original length, triggering the sensing device (i.e., sensor 240). When the sensor 240 senses the position signal of the tension pulley 200, an alarm signal is sent to remind the operator to replace the chain 120 or adjust the tension device.

As shown in fig. 2, in the present embodiment, the fixing member 220 is a U-shaped structure, the tensioning wheel 200 is installed at a U-shaped opening of the fixing member 220, and the U-shaped opening of the fixing member 220 can effectively avoid a portion where the tensioning wheel 200 is engaged with the chain 120, so as to reserve a rotation space for the tensioning wheel 200. In this embodiment, the fixing member 220 includes two parallel sidewalls, and a connecting plate is connected to the bottom of the two sidewalls, and the bottom of the connecting plate is connected to the mounting base 230 through a compression spring 250. The center of the tension pulley 200 is provided with a mounting hole, the rotating shaft 210 is mounted in the mounting hole, through holes for the rotating shaft 210 to pass through are formed in the positions, corresponding to the rotating shaft 210, of the two side walls of the fixing member 220, and the tension pulley 200 can rotate freely under the driving of the chain 120, so that the rotating shaft 210 is driven to rotate freely in the through holes of the two side walls of the fixing member 220.

In this embodiment, the mounting base 230 includes two side plates 232 disposed in parallel on the outer sides of two side walls of the fixing element 220, the two side plates 232 are provided with sliding slots 231 extending along the height direction, as shown in the orientation shown in fig. 1, in this embodiment, the two side plates 232 are located on the outer sides of the width direction of the chain 120, that is, the fixing element 220 is disposed between the two side plates 232, and the U-shaped opening of the fixing element 220 is provided with the tensioning wheel 200 and the chain 120, which can effectively avoid affecting the movement of the transmission mechanism of the chain 120. In this embodiment, a fixing plate 233 is connected between the two side plates 232, the bottom of the fixing member 220 is connected to the fixing plate 233 through a compression spring 250, wherein the fixing plate 233 and the upper portions of the two side plates 232 form a U-shaped structure, and the fixing member 220 is disposed in the U-shaped opening of the mounting base 230. In this embodiment, the bottom of the side plates 232 on both sides is connected with a bottom plate 235, and an avoiding cavity 234 for the other side of the chain 120 to pass through is provided between the bottom plate 235 and the fixing plate 233, that is, the avoiding cavity is used for avoiding the chain 120 on the other side which is not engaged with the tension pulley 200, so as to avoid influencing the normal movement of the transmission mechanism of the chain 120.

In this embodiment, a mounting hole is formed in one side of the bottom of the mounting base 230, a connecting bolt is installed in the mounting hole, the mounting base 230 is fixed to the frame of the transmission mechanism through the connecting bolt, that is, one side of the bottom plate 235 extends beyond the edge of the side plate 232, a mounting hole is formed in a position of the bottom plate 235 corresponding to the frame of the transmission mechanism, and the connecting bolt sequentially penetrates through the mounting holes in the bottom plate 235 and the frame to fix the mounting base 230 to the frame of the transmission mechanism.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a chain drive automatic tensioning device which characterized in that: including take-up pulley (200) with chain (120) one side looks meshing, install on mounting (220) take-up pulley (200) through axis of rotation (210), the both sides of mounting (220) are provided with horizontal extension's slide bar (221), the bottom of mounting (220) is fixed on mounting base (230) through compression spring (250), and mounting base (230) and slide bar (221) corresponding position offer along direction of height extension's spout (231), slide bar (221) cooperation card is gone into in spout (231).

2. The chain drive automatic tensioner as set forth in claim 1, wherein: a sensor (240) is arranged on the mounting base (230) and close to the outermost edge of the sliding chute (231), and the sensor (240) is connected with a computer of the operation room.

3. The chain drive automatic tensioner as set forth in claim 1, wherein: fixing piece (220) are U type structure, and the U type opening part at fixing piece (220) is installed in take-up pulley (200), fixing piece (220) are including parallel arrangement's both sides wall, and the bottom of both sides wall is connected with the connecting plate, and the bottom of connecting plate passes through compression spring (250) and links to each other with mounting base (230).

4. A chain drive automatic tensioner as set forth in claim 3, wherein: the mounting base (230) comprises two side plates (232) which are arranged on the outer sides of two side walls of the fixing part (220) in parallel, a sliding groove (231) extending in the height direction is formed in each of the two side plates (232), a fixing plate (233) is connected between the two side plates (232), and the bottom of the fixing part (220) is connected with the fixing plate (233) through a compression spring (250).

5. The chain drive automatic tensioner as set forth in claim 4, wherein: the center of take-up pulley (200) has seted up the mounting hole, installs axis of rotation (210) in the mounting hole, and the through-hole that supplies axis of rotation (210) to pass is seted up to the position that the both sides wall of mounting (220) corresponds with axis of rotation (210).

6. The chain drive automatic tensioner as set forth in claim 5, wherein: the bottom of the side plates (232) at the two sides is connected with a bottom plate (235), and an avoiding cavity (234) for the chain (120) to pass through is arranged between the bottom plate (235) and the fixed plate (233).

7. The chain drive automatic tensioner as set forth in any one of claims 1 to 6, wherein: the bottom of the mounting base (230) is provided with a mounting hole, a connecting bolt is arranged in the mounting hole, and the mounting base (230) is fixed on the rack of the transmission mechanism through the connecting bolt.