CN210371863U

CN210371863U - Chain tensioning device

Info

Publication number: CN210371863U
Application number: CN201920949880.5U
Authority: CN
Inventors: 陈虎
Original assignee: Jinan Juncheng Mechanical Equipment Co Ltd
Current assignee: Jinan Juncheng Mechanical Equipment Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-04-21
Anticipated expiration: 2029-06-21

Abstract

The utility model provides a chain tensioning device relates to chain technical field, include: the upper end and the lower end of the bracket are respectively provided with an upper roller and a lower roller, the bottom of the upper roller is connected with the top of the upper chain, the top of the lower roller is connected with the bottom of the lower chain, and the upper roller is connected with the bracket in a sliding manner in the vertical direction through an upper elastic device; the lower roller is connected with the bracket in a sliding way in the vertical direction through a lower elastic device. The upper roller and the lower roller which are arranged on the support are respectively extruded to the upper chain and the lower chain from the upper end and the lower end through the elastic device, so that the chain is always kept tight, looseness and abrasion are reduced, the service life of the chain is prolonged, the working efficiency is improved, and the high practical value is achieved.

Description

Chain tensioning device

Technical Field

The utility model belongs to the technical field of the chain technique and specifically relates to a chain tensioning device is related to.

Background

The superfine pulverizer is a vibrating grinder, which is vibrated by a main shaft with an eccentric block, the vibration source is the centrifugal force generated when the eccentric mass rotates, the eccentric mass rotates at high speed to generate great vibration force to drive a barrel to vibrate continuously at high frequency, and a high-load centrifugal pulverizing stress field and a positive impact force are formed in a grinding cavity. The materials are mixed with the stainless steel bar medium in the grinding cylinder under the action of strong high-frequency vibration force. The medium continuously collides, extrudes and shears the material. The two-way effect of high-speed impact force and shearing force makes the material reach superfine crushing effect, has greatly shortened crushing time, improves crushing efficiency. Because the medium is the contact between the stainless steel bar metal wires, the medium filling rate is high, and the action times in unit time are more. Can ensure that the materials are uniformly distributed, and achieves the effect of precise mixing (dispersing and emulsifying) while crushing. The equipment can be combined with low temperature technology, the grinding cavity is provided with a cooling closed circulation system and a refrigerator, and the powder discharge temperature is not higher than 10 ℃. Is beneficial to keeping the biological active ingredients and various nutrient ingredients which are not high temperature resistant. The existing ultrafine grinder adopts a mode that a transmission shaft of a turnover motor speed reducer is reused, and a chain drives a transmission end cover rotating shaft, so that the grinding drum material box can be turned over up and down. The chain comprises an upper chain, a lower chain, a chain positioned at the upper part of the chain wheel and a chain positioned at the lower part of the chain wheel.

Under the working environment of high frequency and high load, the transmission chain is easy to loosen, fall off and wear.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chain overspeed device tensioner, through elastic device will set up last gyro wheel on the support and lower gyro wheel from upper and lower both ends extrusion upper chain and lower chain respectively to keep tightening of chain always, reduce not hard up and wearing and tearing, increased the life of chain, improved work efficiency, higher practical value has.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of chain tensioning device, include: the upper end and the lower end of the bracket are respectively provided with an upper roller and a lower roller, the bottom of the upper roller is connected with the top of the upper chain, the top of the lower roller is connected with the bottom of the lower chain, and the upper roller is connected with the bracket in a sliding mode in the vertical direction through an upper elastic device; the lower roller is connected with the bracket in a sliding mode in the vertical direction through a lower elastic device.

Preferably, the support comprises a support frame, and an upper guide post and a lower guide post which are vertically arranged on the support frame, and the upper roller is connected with the upper guide post in a sliding manner through the upper elastic device; the lower roller is connected with the lower guide pillar in a sliding manner through the lower elastic device.

Preferably, the upper elastic device comprises an upper sliding block and an upper elastic element which are connected with the upper roller, the upper sliding block is sleeved on the upper guide post and is connected with the top of the upper guide post through the upper elastic element; the lower elastic device comprises a lower sliding block and a lower elastic element which are connected with the lower idler wheel, and the lower sliding block is sleeved on the lower guide pillar and is connected with the bottom end of the lower guide pillar through the lower elastic element.

Preferably, the outer side surface of the top end of the upper guide pillar is provided with an external thread and sleeved with an upper adjusting nut, the upper adjusting nut is connected with the upper slide block through the upper elastic element, the outer side surface of the bottom end of the lower guide pillar is provided with an external thread and sleeved with a lower adjusting nut, and the lower adjusting nut is connected with the lower slide block through the lower elastic element.

Preferably, the side surface of the upper sliding block is provided with an upper roller shaft which is rotatably connected with the upper roller, and the side surface of the lower sliding block is provided with a lower roller shaft which is rotatably connected with the lower roller.

Preferably, the upper roller shaft is provided with a first concave part with internal threads, the side surface of the upper sliding block is provided with a first convex part with external threads, and the first convex part is inserted into the first concave part and is in threaded connection; the lower roller shaft is provided with a second concave part with internal threads, the side surface of the lower slider is provided with a second convex part with external threads, and the second convex part is inserted into the second concave part and is in threaded connection.

Preferably, the number of the upper guide pillars and the number of the lower guide pillars are two, the number of the upper sliding blocks and the number of the lower sliding blocks are two, the upper rollers are two of the upper sliding blocks respectively, and the number of the lower rollers is two of the lower sliding blocks respectively.

Preferably, the support frame is provided with a threaded through hole, and the ends of the upper guide pillar and the lower guide pillar, which are close to the support frame, are both provided with external threads and are in threaded connection with the threaded through hole.

Preferably, the external thread arranged at one end of the lower guide post close to the support frame is extended towards the direction far away from the support frame and sleeved with the fastening nut.

Preferably, the upper roller and the lower roller are both nylon rollers.

The utility model provides a technical scheme can include following beneficial effect:

under the working environment of high-frequency vibration and high load, the transmission chain is easy to loosen, fall off and wear. The utility model provides a pair of chain overspeed device tensioner is applied to among the chain technical field, will set up last gyro wheel on the support and lower gyro wheel respectively from upper and lower both ends extrusion chain and lower chain to keep tightening of chain always, reduce not hard up and wearing and tearing, increased the life of chain, improved work efficiency, have higher practical value.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a chain tensioner according to an embodiment of the present invention;

fig. 2 is a schematic side view of a chain tensioner according to an embodiment of the present invention.

In the figure: 1. a support; 101. a support frame; 102. an upper guide post; 103. a lower guide post; 2. an upper roller; 3. a lower roller; 4. an upper elastic device; 401. an upper slide block; 402. an upper elastic member; 5. a lower elastic device; 501. a lower slide block; 502. a lower elastic element; 6. an upper adjusting nut; 7. a lower adjusting nut; 8. And (5) tightening the nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A specific embodiment of the utility model provides a chain tensioner, as shown in fig. 1 and 2, include: the device comprises a support 1, wherein an upper roller 2 is arranged at the upper end of the support 1, a lower roller 3 is arranged at the lower end of the support 1, so that the upper roller 2 and the lower roller 3 are in the same vertical direction, and an upper elastic device 4 is arranged between the upper roller 2 and the support 1, so that the upper roller 2 can elastically move up and down in the vertical direction; a lower elastic means 5 is provided between the lower roller 3 and the bracket 1 so that the lower roller 3 can be elastically moved up and down in the vertical direction. The chain is arranged between the upper roller 2 and the lower roller 3, so that the upper chain is pressed downwards by the upper roller 2, and the lower chain is pressed upwards by the lower roller 3. According to the arrangement, when the chain rotates clockwise, the upper chain is tightened, the upper chain and the lower chain move upwards at the moment, the upper roller 2 moves upwards under the action of the upper elastic device 4, the original tightened state of the upper chain is kept while the tension of the chain is relieved, and the lower roller 3 moves upwards under the action of the lower elastic device 5 to be connected with the lower chain so as to keep the original tightened state of the lower chain; when the chain anticlockwise rotates, the lower chain is tightened, the upper chain and the lower chain move downwards at the moment, the upper idler wheel 2 moves downwards to be connected with the upper chain under the action of the upper elastic device 4, the original tightening state of the lower chain is kept, the lower idler wheel 3 moves downwards under the action of the lower elastic device 5, and the original tightening state of the upper chain is kept while the tension force of the chain is relieved. Therefore, the normal tight state of the chain is always kept, the looseness and abrasion are reduced, the service life of the chain is prolonged, the working efficiency is improved, and the practical value is high.

As an optional implementation manner, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the bracket 1 includes a supporting frame 101, an upper guide pillar 102 and a lower guide pillar 103, the upper guide pillar 102 and the lower guide pillar 103 are both vertically connected to the supporting frame 101, and the upper guide pillar 102 and the lower guide pillar 103 are in the same vertical direction, so as to ensure that the upper roller 2 and the lower roller 3 are in the same vertical direction, the upper roller 2 is slidably connected to the upper guide pillar 102 through the upper elastic device 4, and the lower roller 3 is slidably connected to the lower guide pillar 103 through the lower elastic device 5. So set up for upper roller 2 slides along upper guide pillar 102 under the elastic action of last resilient means 4, makes lower gyro wheel 3 slide along lower guide pillar 103 under the effect of lower resilient means 5, and the slip effect is better.

As an alternative embodiment, in the embodiment of the present invention, as shown in fig. 1 and 2, the upper elastic device 4 includes an upper slider 401 and an upper elastic element 402, and the lower elastic device 5 includes a lower slider 501 and a lower elastic element 502 connected to the lower roller 3. The upper roller 2 is connected with the upper slider 401, and the lower roller 3 is connected with the lower slider 501. The upper slider 401 is sleeved on the upper guide post 102 and then connected to the top of the upper guide post 102 through the upper elastic element 402, and the lower slider 501 is sleeved on the lower guide post 103 and then connected to the bottom of the lower guide post 103 through the lower elastic element 502. The upper elastic element 402 and the lower elastic element 502 may be springs sleeved on the upper guide post 102 and the lower guide post 103. With the arrangement, the upper sliding block 401 moves upwards to compress the upper elastic element 402, and the upper elastic element 402 rebounds to drive the upper sliding block 401 to move downwards, so that the upper roller 2 moves elastically; the lower sliding block 501 moves downwards to compress the lower elastic element 502, and the lower elastic element 502 rebounds to drive the lower sliding block 501 to move upwards, so that the lower roller 3 can move elastically. The moving process of the upper roller 2 and the lower roller 3 is more stable.

As an optional implementation manner, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, an external thread is disposed on the outer side surface of the top end of the upper guide post 102 and is sleeved with the upper adjusting nut 6, the bottom of the adjusting nut 6 is connected to the upper elastic element 402, and the upper elastic element 402 is connected to the upper slider 401. The outer side surface of the bottom end of the lower guide post 103 is provided with an external thread and sleeved with a lower adjusting nut 7, and the top of the lower adjusting nut 7 is connected with a lower sliding block 501 through a lower elastic element 502. The upper elastic member 402 and the lower elastic member 502 may be springs sleeved on the upper guide post 102 and the lower guide post 103. With such an arrangement, the tightness of the spring can be respectively adjusted by rotating the upper adjusting nut 6 and the lower adjusting nut 7, so that the elasticity of the spring to the upper slider 401 and the lower slider 501 is adjusted, and the adjustment is convenient for a user to adjust in real time.

As an alternative embodiment, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, an upper roller shaft is disposed on a side surface of the upper slider 401, then the upper roller 2 is sleeved on the upper roller shaft to realize the rotation of the upper roller 2, a lower roller shaft is disposed on a side surface of the lower slider 501, and then the lower roller 3 is sleeved on the lower roller shaft to realize the rotation of the lower roller 3. So set up, the rotation of last gyro wheel 2 and lower gyro wheel 3 is more steady.

As an alternative embodiment, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, a first concave portion is provided at one end of the upper roller shaft, and an internal thread is provided on an inner wall of the first concave portion, a first convex portion is provided at a side surface of the upper slider 401, and an external thread is correspondingly provided on an outer wall of the first convex portion, and the internal thread is screwed with the external thread, thereby connecting the upper roller shaft and the upper slider 401; a second concave portion is formed at one end of the lower roller shaft, an internal thread is formed on the inner wall of the second concave portion, a second convex portion is formed on the side surface of the lower slider 501, an external thread is correspondingly formed on the outer wall of the second convex portion, and the internal thread is in threaded connection with the external thread, so that the lower roller shaft and the lower slider 501 are connected. By the arrangement, the fixing effect of the upper roller shaft and the lower roller shaft is better.

As an optional implementation manner, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the upper guide pillar 102 and the lower guide pillar 103 may be set to two, two upper guide pillars 102 are respectively disposed at two ends of the upper roller 2, two lower guide pillars 103 are respectively disposed at two ends of the lower roller 3, wherein the upper slider 401 and the lower slider 501 are correspondingly set to two, the upper roller 2 is respectively rotatably connected to two upper sliders 401 at two ends thereof, and the lower roller 3 is respectively rotatably connected to two lower sliders 501 at two ends thereof. So set up, support the gyro wheel 2 through two upper guide posts 102, support the bottom roller 3 through two bottom guide posts 103 for the support of upper roller 2 and bottom roller 3 is more reliable, rotates more steadily.

As an optional implementation manner, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, a threaded through hole is provided on the support frame 101, an external thread is provided at one end of the upper guide pillar 102 close to the support frame 101 and connected to the threaded through hole, and an external thread is provided at one end of the lower guide pillar 103 close to the support frame 101 and connected to the threaded through hole. The upper guide post 102 and the lower guide post 103 can be connected into a whole, so that the support is more stable.

As an optional implementation manner, in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the external thread disposed at one end of the lower guide post 103 close to the support frame 101 is extended and sleeved with the fastening nut 8 in a direction away from the support frame 101. So set up, tighten the fastening nut for fastening nut 8 and support frame 101 contact, thereby further strengthen the connection between lower guide pillar 103 and support frame 101.

As an optional implementation manner, in the embodiment of the present invention, as shown in fig. 1 and fig. 2, the upper roller 2 and the lower roller 3 are both nylon rollers. So set up, reduce the weight and the hardness of upper roller 2 and lower roller 3 to reduce the wearing and tearing of chain.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A chain tensioner, comprising: the upper end and the lower end of the support (1) are respectively provided with an upper roller (2) and a lower roller (3), the bottom of the upper roller (2) is connected with the top of an upper chain, the top of the lower roller (3) is connected with the bottom of a lower chain, and the upper roller (2) is in sliding connection with the support (1) in the vertical direction through an upper elastic device (4); the lower roller (3) is connected with the bracket (1) in a sliding manner in the vertical direction through a lower elastic device (5).

2. Chain tensioner according to claim 1, characterized in that said bracket (1) comprises a supporting frame (101) and an upper guide post (102) and a lower guide post (103) vertically arranged on said supporting frame (101), said upper roller (2) being slidingly connected to said upper guide post (102) by said upper elastic means (4); the lower roller (3) is connected with the lower guide post (103) in a sliding way through the lower elastic device (5).

3. Chain tensioner according to claim 2, characterized in that said upper elastic means (4) comprise an upper slider (401) and an upper elastic element (402) connected to said upper roller (2), said upper slider (401) being fitted over said upper guide post (102) and being connected to the top of said upper guide post (102) by means of an upper elastic element (402); the lower elastic device (5) comprises a lower sliding block (501) and a lower elastic element (502) which are connected with the lower roller (3), the lower sliding block (501) is sleeved on the lower guide post (103) and is connected with the bottom end of the lower guide post (103) through the lower elastic element (502).

4. The chain tensioner according to claim 3, characterized in that the outer side of the top end of the upper guide post (102) is provided with an external thread and is sleeved with an upper adjusting nut (6), the upper adjusting nut (6) is connected with the upper slider (401) through the upper elastic element (402), the outer side of the bottom end of the lower guide post (103) is provided with an external thread and is sleeved with a lower adjusting nut (7), and the lower adjusting nut (7) is connected with the lower slider (501) through the lower elastic element (502).

5. Chain tensioner according to claim 3, characterized in that the side of the upper slider (401) is provided with an upper roller shaft rotatably connected to the upper roller (2) and the side of the lower slider (501) is provided with a lower roller shaft rotatably connected to the lower roller (3).

6. The chain tensioner according to claim 5, wherein said upper roller shaft is provided with a first recess with an internal thread, and said upper slider (401) is provided at a side thereof with a first protrusion with an external thread, said first protrusion being inserted into said first recess and screwed; the lower roller shaft is provided with a second concave part with internal threads, the side surface of the lower sliding block (501) is provided with a second convex part with external threads, and the second convex part is inserted into the second concave part and is in threaded connection.

7. Chain tensioner according to claim 3, characterized in that said upper guide post (102) and said lower guide post (103) are provided in two, said upper slider (401) and said lower slider (501) are provided in two, said upper rollers (2) are respectively two said upper sliders (401), and said lower rollers (3) are respectively two said lower sliders (501).

8. A chain tensioner according to claim 2, characterised in that said supporting frame (101) is provided with a threaded through hole, and said upper guide post (102) and said lower guide post (103) are provided with an external thread at one end close to said supporting frame (101) and are threaded into said threaded through hole.

9. The chain tensioner as set forth in claim 8, wherein the external thread provided on the end of the lower guide post (103) near the support bracket 101 is extended in a direction away from the support bracket 101 and is fitted with the tightening nut (8).

10. Chain tensioner according to claim 1, characterized in that the upper roller (2) and the lower roller (3) are both nylon rollers.