CN210709240U - Automatic tensioning device for conveying chain of special vehicle - Google Patents
Automatic tensioning device for conveying chain of special vehicle Download PDFInfo
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- CN210709240U CN210709240U CN201921589264.XU CN201921589264U CN210709240U CN 210709240 U CN210709240 U CN 210709240U CN 201921589264 U CN201921589264 U CN 201921589264U CN 210709240 U CN210709240 U CN 210709240U
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Abstract
The utility model discloses an automatic overspeed device tensioner of conveying chain for special type vehicle, the inboard both ends of frame are provided with two drive arrangement base sliding guide respectively, be provided with the drive arrangement base between two drive arrangement base sliding guide, drive arrangement base top is provided with drive arrangement, the drive arrangement base both ends outside is connected with two drive arrangement base slip wear-resisting covers respectively, two drive arrangement base slip wear-resisting covers contact with two drive arrangement base sliding guide respectively, drive arrangement's both ends are provided with two overspeed device tensioner articulated framves respectively, two overspeed device tensioner articulated framves have two tensioning pneumatic cylinder piston rods through the round pin hub connection respectively, the utility model discloses a effectively prevent to jump the tooth, fall the chain inefficacy and the conveying chain roller derail trouble, simple structure, reliable operation, the normal one-way operation of conveying chain, and just, The tension of the conveying chain can be automatically adjusted in the reverse conversion process.
Description
Technical Field
The utility model relates to a special type vehicle technical field, specific automatic overspeed device tensioner of conveying chain for special type vehicle that says so.
Background
Special vehicles refer to vehicles with the external dimension, the weight and the like exceeding the design vehicle limit and special purposes, are specially made or specially modified and are provided with fixed equipment, the main functions of the special vehicles are not motor vehicles used for carrying people or goods, the special vehicles generally have special signs or special vehicle types, and refer to vehicles which bear special service, hang special vehicle numbers, and are provided with alarms and sign lamps, such as ambulances, fire trucks, police cars, engineering rescue vehicles, military surveillance vehicles and the like.
Some special vehicles such as dump trucks and the like unload materials in the vehicles by driving the unloading device through the conveyor belt, the traditional tensioning system for changing the unilateral loose weight sag of the conveyor chain is inconvenient to adjust, especially the center distance of a driving chain wheel shaft and a driven chain wheel shaft is large, meanwhile, the tensioning adjusting stroke is limited by the installation space, for example, under the vehicle-mounted condition and the condition of needing forward and reverse reciprocating operation, the tensioning system cannot achieve the expected tensioning effect, so that the operation of the conveyor chain is not stable, the noise is large, the service life is shortened, and even tooth jumping, chain dropping failure and roller derailment failure occur.
Therefore, the tensioning device which can effectively prevent tooth jumping, chain dropping failure and derailment of rollers of the conveying chain, has simple structure and reliable work, can automatically adjust the tensioning force of the conveying chain in normal one-way operation and forward and reverse conversion processes of the conveying chain is designed for overcoming the defects of the technology, and is the problem to be solved by the inventor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to prior art, the utility model aims at providing an automatic overspeed device tensioner of conveying chain for special type vehicle can realize effectively preventing to jump the tooth, fall the chain inefficacy and carry the chain roller derailment trouble, simple structure, reliable operation, the normal one-way operation of conveying chain and just, can both the automatic adjustment function of conveying chain tensile force in the reversal conversion process.
The utility model provides a technical scheme that its technical problem adopted is: an automatic conveying chain tensioning device for special vehicles comprises a driving device base sliding guide rail, a driving device base sliding wear-resistant sleeve, a driving device base, a tensioning hydraulic cylinder piston rod, a tensioning hydraulic cylinder barrel, a driving device base adjustable limiting block, a driving device base limiting baffle, a frame and a limiting block fixing bolt, wherein the tensioning hydraulic cylinder is composed of the tensioning hydraulic cylinder piston rod and the tensioning hydraulic cylinder barrel, two driving device base sliding guide rails are respectively arranged at two ends of the inner side of the frame, the driving device base is arranged between the two driving device base sliding guide rails, a driving device is arranged above the driving device base, two driving device base sliding wear-resistant sleeves are respectively connected to the outer sides of two ends of the driving device base, the two driving device base sliding wear-resistant sleeves are respectively contacted with the two driving device base sliding guide rails, the two ends of the driving device are respectively provided with two tensioning device hinged frames, the two tensioning device hinged frames are respectively connected with two tensioning hydraulic cylinder piston rods through pin shafts, one ends of the two tensioning hydraulic cylinder piston rods are respectively arranged on the inner sides of the two tensioning hydraulic cylinder barrels, the bottom ends of the two tensioning hydraulic cylinder barrels are respectively hinged with a cross beam on the rack, a driving device base limiting baffle is arranged on the driving device, a driving device base adjustable limiting block is arranged on the side face of the driving device base limiting baffle, the driving device base adjustable limiting block is fixedly connected with the rack through a limiting plate fixing bolt, and the driving device base adjustable limiting block is contacted with the driving device base limiting baffle.
Further, when the driving device is in a transition state during forward and reverse movement switching, a gap exists between the adjustable limiting block of the driving device base and the limiting baffle of the driving device base, and piston rods of the two tensioning hydraulic cylinders extend to respectively support against two tensioning device hinged frames arranged on the driving device.
Furthermore, the driving device can slide on the inner side of the sliding guide rail of the driving device base through the sliding wear-resistant sleeve of the driving device base.
Furthermore, one end of the cylinder barrel of the tensioning hydraulic cylinder is communicated with the output end of the hydraulic system.
The utility model has the advantages that:
1. the utility model discloses an adopt mobilizable drive arrangement, the cooperation is at the fixed oil hydraulic cylinder on the frame, when the forward and reverse function of conveying chain, provides the tensile force for drive arrangement, and the tension of control chain has realized effectively preventing to jump the tooth, has fallen the chain inefficacy and has carried the chain roller derailment trouble, simple structure, reliable operation, the normal one-way operation of conveying chain and just, can both the automatic adjustment function of conveying chain tensile force among the reverse conversion process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Fig. 3 is a sectional view taken at B-B in fig. 1.
Fig. 4 is a schematic structural diagram of the transition state of the forward and reverse switching of the present invention.
Description of reference numerals: 1-a drive device base sliding guide rail; 2-sliding wear-resistant sleeve of the driving device base; 3-a drive device base; 4-tensioning the hydraulic cylinder piston rod; 5-tensioning a cylinder barrel of the hydraulic cylinder; 6-adjustable limiting block of the driving device base; 7-a drive device base limit baffle; 8, conveying the upper edge of the chain; 9-the lower side of the conveying chain; 10-a frame; 11-a stop block fixing bolt.
Detailed Description
The invention will be further described with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.
Referring to fig. 1 to 4, which are the structural schematic diagrams of the present invention, a cross-sectional view at a-a in fig. 1, a cross-sectional view at B-B in fig. 1, a structural schematic diagram of a forward and reverse transition state, and the structural schematic diagrams include a driving device base sliding guide rail, a driving device base sliding wear-resistant sleeve, a driving device base, a tensioning hydraulic cylinder piston rod, a tensioning hydraulic cylinder barrel, an adjustable limiting block of the driving device base, a limiting baffle of the driving device base, a frame, a limiting block fixing bolt, a tensioning hydraulic cylinder composed of the tensioning hydraulic cylinder piston rod and the tensioning hydraulic cylinder barrel, two driving device base sliding guide rails respectively arranged at two ends of the frame, a driving device base arranged between the two driving device base sliding guide rails, a driving device arranged above the driving device base, two driving device base sliding, two drive arrangement base slip wear-resistant sleeves contact with two drive arrangement base sliding guide respectively, drive arrangement's both ends are provided with two overspeed device tensioner articulated framves respectively, two overspeed device tensioner articulated framves are connected with two tensioning hydraulic cylinder piston rods through the round pin hub connection respectively, the one end of two tensioning hydraulic cylinder piston rods sets up respectively at two tensioning hydraulic cylinder barrel inboards, the bottom of two tensioning hydraulic cylinder barrels articulates with the crossbeam in the frame respectively and is connected, the last drive arrangement base limit baffle that is provided with of drive arrangement, drive arrangement base limit baffle side is provided with the adjustable stopper of drive arrangement base, the adjustable stopper of drive arrangement base passes through limiting plate fixing bolt and is connected fixedly with the frame, the adjustable stopper of drive arrangement base contacts with drive arrangement base limit baffle.
When the driving device is in a transition state during forward and reverse motion switching, a gap exists between an adjustable limiting block of a base of the driving device and a limiting baffle of the base of the driving device, piston rods of two tensioning hydraulic cylinders extend to respectively abut against two tensioning device hinged frames arranged on the driving device, the driving device can slide on the inner side of a sliding guide rail of the base of the driving device through a sliding wear-resistant sleeve of the base of the driving device, and one end of a cylinder barrel of a tensioning hydraulic cylinder is communicated with the output end of a hydraulic system.
The technical scheme of the invention is as follows: a piston rod and a cylinder barrel of the conveying chain tensioning hydraulic cylinder are respectively hinged with a fixed hinge support fixed on a driving device base and a rack through a lock shaft, and the driving device base and a sliding wear-resistant sleeve of the driving device base can slide back and forth along a sliding guide rail (fixed on the lower portion of the front ends of the left and the longitudinal beams of the rack). During installation, the working pressure of a hydraulic loop of the tensioning hydraulic cylinder is adjusted to enable the piston rod to extend out of the cylinder barrel for a certain stroke, so that the conveying chain reaches a preset tensioning force, at the moment, the longitudinal position of the limiting block can be adjusted by adjusting the driving device base, the limiting block is enabled to be in contact with the limiting baffle fixed on the driving device base and then adjusted back for a certain distance H, and the limiting block is fixed on the rack through the bolt group. When the conveying chain wheel and the chain run forward or backward, the reaction force of the longitudinal traction force on the tight edge of the conveying chain exceeds the preset tension force, the limiting plate on the base of the driving device moves towards the limit block on the rack to make contact with each other after the idle stroke H, the conveying chain reaches a proper initial tension state, and the one-way running is continued, namely the normal conveying chain traction force working process is completed. As shown in fig. 1.
When the conveying chain wheel and the chain are reversed and converted from a forward or reverse running state, because the tight edge and the loose edge of the conveying chain enter a mutual reversing and converting state, the reaction force of the longitudinal traction force of the conveying chain is subjected to a process of changing from big to small and changing from double to big, in the transition process, initially, when the reaction force of the longitudinal traction force of the conveying chain is smaller than the preset tension force of the tensioning hydraulic cylinder, the piston rod is pushed out until the piston rod is balanced with the preset tension force, the longitudinal distance between the adjustable limiting block of the driving device base and the limiting baffle fixed on the driving device base is H, the reaction force of the longitudinal traction force of the conveying chain is continuously increased, the limiting plate on the driving device base is enabled to move to the limiting block on the rack to be in contact with each other after the limiting block on the rack moves to be in the idle stroke H, and the, And (4) reversing the chain, namely, switching the tight edge and the loose edge of the conveying chain. And continuing the unidirectional operation, namely entering the next normal work doing process of the traction force of the conveying chain. As shown in fig. 2.
The conveying chain is properly tensioned no matter the conveying chain is in a one-way running state or in a conversion transition state of forward and reverse running, and the meshing motion of the chain wheel and the chain can be stably carried out, so that the gear jumping, chain dropping failure and roller derailing faults during the running of the conveying chain are effectively prevented, the running noise of the conveying chain is reduced, and the service life of the conveying chain is prolonged.
The utility model discloses an adopt mobilizable drive arrangement, the cooperation is at the fixed oil hydraulic cylinder on the frame, when the forward and reverse function of conveying chain, provides the tensile force for drive arrangement, and the tension of control chain has realized effectively preventing to jump the tooth, has fallen the chain inefficacy and has carried the chain roller derailment trouble, simple structure, reliable operation, the normal one-way operation of conveying chain and just, can both the automatic adjustment function of conveying chain tensile force among the reverse conversion process.
Claims (4)
1. The utility model provides a conveying chain automatic tensioning device for special type vehicle which characterized in that: the device comprises a driving device base sliding guide rail, a driving device base sliding wear-resistant sleeve, a driving device base, a tensioning hydraulic cylinder piston rod, a tensioning hydraulic cylinder barrel, a driving device base adjustable limiting block, a driving device base limiting baffle, a frame and a limiting block fixing bolt, wherein the tensioning hydraulic cylinder is composed of the tensioning hydraulic cylinder piston rod and the tensioning hydraulic cylinder barrel, two driving device base sliding guide rails are respectively arranged at two ends of the inner side of the frame, the driving device base is arranged between the two driving device base sliding guide rails, a driving device is arranged above the driving device base, two driving device base sliding wear-resistant sleeves are respectively connected to the outer sides of two ends of the driving device base, the two driving device base sliding wear-resistant sleeves are respectively contacted with the two driving device base sliding guide rails, two tensioning device hinged frames are respectively arranged at two, the two tensioning device hinged frames are respectively connected with two tensioning hydraulic cylinder piston rods through pin shafts, one ends of the two tensioning hydraulic cylinder piston rods are respectively arranged on the inner sides of the two tensioning hydraulic cylinder barrels, the bottom ends of the two tensioning hydraulic cylinder barrels are respectively hinged with a cross beam on the frame, a driving device base limiting baffle is arranged on the driving device, an adjustable limiting block of a driving device base is arranged on the side face of the driving device base limiting baffle, the adjustable limiting block of the driving device base is fixedly connected with the frame through a limiting plate fixing bolt, and the adjustable limiting block of the driving device base is in contact with the limiting baffle of the driving device base.
2. The automatic conveyor chain tensioning device for special vehicles according to claim 1, characterized in that: when the driving device is in a transition state during forward and reverse motion switching, a gap exists between the adjustable limiting block of the driving device base and the limiting baffle of the driving device base, and the piston rods of the two tensioning hydraulic cylinders extend to respectively support against the two tensioning device hinged frames arranged on the driving device.
3. The automatic conveyor chain tensioning device for special vehicles according to claim 1, characterized in that: the driving device can slide on the inner side of the sliding guide rail of the driving device base through the sliding wear-resistant sleeve of the driving device base.
4. The automatic conveyor chain tensioning device for special vehicles according to claim 1, characterized in that: and one end of the cylinder barrel of the tensioning hydraulic cylinder is communicated with the output end of the hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589264.XU CN210709240U (en) | 2019-09-24 | 2019-09-24 | Automatic tensioning device for conveying chain of special vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589264.XU CN210709240U (en) | 2019-09-24 | 2019-09-24 | Automatic tensioning device for conveying chain of special vehicle |
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| Publication Number | Publication Date |
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| CN210709240U true CN210709240U (en) | 2020-06-09 |
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| CN201921589264.XU Active CN210709240U (en) | 2019-09-24 | 2019-09-24 | Automatic tensioning device for conveying chain of special vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525891A (en) * | 2019-09-24 | 2019-12-03 | 山东铁马特种车辆制造有限公司 | A kind of carrier chain automatic takeup for special vehicle |
-
2019
- 2019-09-24 CN CN201921589264.XU patent/CN210709240U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110525891A (en) * | 2019-09-24 | 2019-12-03 | 山东铁马特种车辆制造有限公司 | A kind of carrier chain automatic takeup for special vehicle |
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