CN212106818U

CN212106818U - Structure for automatically tensioning heavy chain of hot air circulating furnace

Info

Publication number: CN212106818U
Application number: CN202020505554.8U
Authority: CN
Inventors: 顾勇; 胡亚涛
Original assignee: Wuxi Chengyong Automation Technology Co ltd
Current assignee: Wuxi Chengyong Automation Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-12-08
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a structure for heavy chain automatic tensioning of heated air circulation stove, including the chain, go up the sprocket, the straining structure, lower sprocket, lift guide arm, sensor and cylinder, the chain meshes with lower sprocket after passing through last sprocket, and the chain is connected with the lift guide arm after passing through lower sprocket, and lift guide arm downside is provided with the sensor, goes up the sprocket and is provided with the straining structure down between the sprocket, and straining chain wheel and the laminating in chain left side in the straining structure, and the cylinder setting is in the straining structure left side, the utility model discloses a sensor monitors whether the lift guide arm takes place the displacement and judges whether lax of chain, starts the cylinder when the chain lax, promotes the straining structure with the chain tensioning, accomplishes the tensioning after, the chain drives the lift guide arm and resets, and the sensor detects the lift guide arm and closes the cylinder.

Description

Structure for automatically tensioning heavy chain of hot air circulating furnace

Technical Field

The utility model relates to the field of machinary, in particular to a structure that is used for automatic tensioning of heavy chain of heated air circulation stove.

Background

In current large-scale drying equipment, heated air circulation furnace's chain tension structure is mechanical screw rod formula tension structure mostly, and such structure need come to adjust the both ends of chain respectively through the manpower when facing the lax problem that the chain produced because long-time conveying, very easily in the accommodation process, and the dynamics of both ends regulation makes the tensioning degree at both ends inconsistent, influences the use in later stage and the life-span of chain. Meanwhile, whether the chain is loosened or not is judged by manual observation, and when the high-strength continuous operation is performed, the phenomenon that the chain is loosened is easily not found in time, so that the service life of the chain is influenced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a structure that is used for the automatic tensioning of heavy chain of heated air circulation stove can the automatic tensioning chain, and the tensioning degree at simultaneous control both ends is unanimous.

The technical scheme is as follows: the utility model relates to a structure for automatic tensioning of a heavy chain of a hot air circulation furnace, which comprises a chain, an upper chain wheel, a tensioning structure, a lower chain wheel, a lifting guide rod, a sensor and a cylinder, wherein the chain is meshed with the lower chain wheel after passing through the upper chain wheel, the chain is connected with the lifting guide rod after passing through the lower chain wheel, and the sensor is arranged at the lower side of the lifting guide rod; a tensioning structure is arranged between the upper chain wheel and the lower chain wheel, and the tensioning chain wheel in the tensioning structure is attached to the left side of the chain; the cylinder is arranged on the left side of the tensioning structure.

Preferably, the tensioning structure comprises a tensioning shaft, a tensioning chain wheel, an upper guide plate, a lower guide plate, a sliding bearing seat, a synchronous gear and a rack, wherein the upper guide plate and the lower guide plate are arranged between the upper chain wheel and the lower chain wheel and are perpendicular to the chain; the tensioning shaft is arranged between the upper guide plate and the lower guide plate and is in sliding connection with the upper guide plate and the lower guide plate; a pair of tensioning chain wheels, a pair of sliding bearing seats and a pair of synchronous gears are symmetrically arranged on the tensioning shaft; the tensioning chain wheels are symmetrically nested in the middle of the shaft body of the tensioning shaft; the sliding bearing block is nested on an outer shaft body at the joint of the tensioning shaft and the upper guide plate and the lower guide plate; the synchronous gear is nested on shaft bodies at two ends of the tensioning shaft; the rack is arranged on the lower guide plate and meshed with the synchronous gears at the two ends of the tensioning shaft.

Preferably, the sliding bearing seat in the tensioning structure is connected with the upper guide plate and the lower guide plate in a sliding mode.

Preferably, the piston rod in the cylinder is connected with a sliding bearing seat in the tensioning structure.

Preferably, the lifting guide rod can slide up and down along the fixed seat.

The technical principle is as follows: the utility model discloses a sensor, monitoring lift guide arm, whether there is not hard up condition in the chain is judged through the change of lift guide arm position, when the chain has not hard up condition, the sensor sends actuating signal to the cylinder, slide bearing frame through among the cylinder drive tensioning structure slides along the deflector, slide bearing frame drives the tensioning axle and slides along the deflector together, tensioning gear on the tensioning axle is at the slip in-process through with the chain to opposite side propelling movement, it reaches the effect of tensioning to lengthen chain movement distance, the supplementary tensioning gear of synchronous gear at tensioning axle both ends simultaneously, synchronous propelling movement chain, guarantee the chain in the tensioning process, the tensioning can be synchronized at the both ends of tensioning part.

Has the advantages that: through the utility model discloses can guarantee that the chain in the heated air circulation stove can automatic tensioning, both ends tensioning dynamics keeps unanimous during the tensioning simultaneously.

Drawings

FIG. 1 is a side view of a hot air circulating furnace heavy chain automatic tensioning arrangement;

FIG. 2 is a sectional view taken along the direction A-A of a side view of a heavy chain automatic tensioning structure of a hot air circulating furnace.

Detailed Description

As shown in fig. 1, for the utility model discloses well automatic tensioning structure's side view, including chain 1, go up sprocket 2, tensioning structure 3, lower sprocket 4, lift guide arm 5, sensor 6 and cylinder 7, chain 1 meshes with lower sprocket 4 after through last sprocket 2, chain 1 is connected and is passed through lift guide arm 5 with lift guide arm 5 after passing through lower sprocket 4, lift guide arm 5 passes through fixing base 51 and installs the right side at lower sprocket 4, lift guide arm 5 can follow fixing base 51 and slide from top to bottom, lift guide arm 5 downside is provided with sensor 6.

The utility model discloses in, tensioning structure 3 sets up in the middle of last sprocket 2 and lower sprocket 4, and piston rod 71 is connected with sliding bearing seat 35 in tensioning structure 3 in the cylinder 7, sets up the left side at tensioning structure 3.

As shown in fig. 2, which is a cross-sectional view taken along a-a direction of the tensioning structure in fig. 1, the tensioning structure 3 includes a tensioning shaft 31, a tensioning sprocket 32, an upper guide plate 33, a lower guide plate 34, a sliding bearing seat 35, a synchronizing gear 36, and a rack 37, wherein the upper guide plate 33 and the lower guide plate 34 are disposed between the upper sprocket 2 and the lower sprocket 4, and are perpendicular to the chain 1; the tensioning shaft 31 is arranged between the upper guide plate 33 and the lower guide plate 34 and is in sliding connection with the upper guide plate 33 and the lower guide plate 34, the tensioning shaft 31 is provided with a pair of tensioning sprockets 32, a pair of sliding bearing seats 35 and a pair of synchronizing gears 36, wherein the tensioning sprockets 32 are symmetrically nested in the middle of the shaft body of the tensioning shaft 31, the sliding bearing seats 35 are nested on the outer shaft body at the connecting part of the tensioning shaft 31 and the upper guide plate 33 as well as the lower guide plate 34, and the synchronizing gears 36 are nested on the shaft bodies at two ends of the tensioning shaft 31; synchronizing gears 36 at both ends of the tension shaft 31 are engaged with racks 37 mounted on the lower guide plate 34.

In the conveying process of the chain 1, after the chain 1 passes through the upper chain wheel 2, the left side of the chain 1 is connected with the tensioning gear 32 in the tensioning structure 3, after passing through the tensioning gear 32, the chain 1 is connected with the lower chain wheel 4, after passing through the lower chain wheel 4, the chain 1 is connected with the lifting guide rod 5, when the chain 1 is loosened, the chain 1 drives the lifting guide rod 5 to move downwards, at the moment, the sensor 6 arranged at the lower side of the lifting guide rod 5 detects that the distance of the lifting guide rod 5 changes, sends a signal to the air cylinder 7, starts the air cylinder 7, works to push the piston rod 71, the piston rod 71 drives the sliding bearing seat 35 in the tensioning structure 3 to slide along the guide plate to the direction of the chain 1, the sliding bearing seat 35 drives the tensioning shaft 31 to slide in the same direction, the tensioning gear 32 on the tensioning shaft 31 pushes the chain 1 to the right side in the sliding process, meanwhile, the synchronous gears 36 at the two ends of the tensioning shaft 31 push the two ends of the tensioning part of the chain 1 along the racks 37, so that the two ends of the chain 1 can be synchronously tensioned in the process of tensioning the chain 1 by the tensioning gear 32, after the chain 1 is tensioned, the lifting guide rod 5 is driven by the chain 1 of the lifting guide rod 5 to move upwards, and after the chain 1 is restored to the initial position, the sensor 6 detects that the position of the lifting guide rod 5 is normal, the signal is sent to the cylinder 7, the cylinder 7 stops working, the tensioning structure 3 does not push the chain 1 any more, the whole tensioning process is finished, and the chain 1 is normally conveyed in the hot air.

Claims

1. The utility model provides a structure that is used for heavy chain automatic tensioning of heated air circulation stove, including chain (1), cochain wheel (2), tension structure (3), lower sprocket (4), lift guide arm (5), sensor (6) and cylinder (7), its characterized in that: the chain (1) is meshed with the lower chain wheel (4) through the upper chain wheel (2), the chain (1) is connected with the lifting guide rod (5) through the lower chain wheel (4), and a sensor (6) is arranged on the lower side of the lifting guide rod (5); a tensioning structure (3) is arranged between the upper chain wheel (2) and the lower chain wheel (4), and a tensioning chain wheel (32) in the tensioning structure (3) is attached to the left side of the chain (1); the air cylinder (7) is arranged on the left side of the tensioning structure (3).

2. The structure for hot air circulation furnace heavy chain automatic tensioning according to claim 1, characterized in that: the tensioning structure (3) comprises a tensioning shaft (31), a tensioning chain wheel (32), an upper guide plate (33), a lower guide plate (34), a sliding bearing seat (35), a synchronous gear (36) and a rack (37), wherein the upper guide plate (33) and the lower guide plate (34) are arranged between the upper chain wheel (2) and the lower chain wheel (4) and are perpendicular to the chain (1); the tensioning shaft (31) is arranged between the upper guide plate (33) and the lower guide plate (34) and is in sliding connection with the upper guide plate (33) and the lower guide plate (34); a pair of tensioning chain wheels (32), a pair of sliding bearing blocks (35) and a pair of synchronous gears (36) are symmetrically arranged on the tensioning shaft (31); the tensioning chain wheel (32) is symmetrically nested in the middle of the shaft body of the tensioning shaft (31); the sliding bearing seat (35) is nested on an outer shaft body at the joint of the tensioning shaft (31) and the upper guide plate (33) and the lower guide plate (34); the synchronous gear (36) is nested on shaft bodies at two ends of the tensioning shaft (31); the rack (37) is arranged on the lower guide plate (34) and is meshed with synchronous gears (36) at two ends of the tensioning shaft (31).

3. The structure for hot air circulation furnace heavy chain automatic tensioning according to claim 1, characterized in that: and a sliding bearing seat (35) in the tensioning structure (3) is in sliding connection with the upper guide plate (33) and the lower guide plate (34).

4. The structure for hot air circulation furnace heavy chain automatic tensioning according to claim 1, characterized in that: and a piston rod (71) in the cylinder (7) is connected with a sliding bearing seat (35) in the tensioning structure (3).

5. The structure for hot air circulation furnace heavy chain automatic tensioning according to claim 1, characterized in that: the lifting guide rod (5) can slide up and down along the fixed seat (51).