CN211282532U

CN211282532U - Hydraulic chain tightener for tail of scraper conveyor

Info

Publication number: CN211282532U
Application number: CN201921543800.2U
Authority: CN
Inventors: 石磊; 郭凌龙; 卫兵海
Original assignee: Shanxi Jincheng Anthracite Mining Group Co Ltd
Current assignee: Shanxi Jincheng Anthracite Mining Group Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-08-18
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses scraper conveyor tail hydraulic chain tightener belongs to coal mine equipment maintenance technical field; the chain loosening of the scraper conveyor easily causes electromechanical accidents, the conventional chain tightening method relies on the safety accidents caused by improper matching of an artificial band-type brake, and the hand-operated chain tightener cannot meet the chain tightening requirement; the utility model provides a hydraulic chain tightener at the tail of a scraper conveyor, which adopts a hydraulic oil cylinder to be connected with a positioning rod of the chain tightener, the positioning rod is positioned on a clamping groove, the positions of the hydraulic oil cylinder and the positioning rod are adjusted according to the safety production requirement, and the tightness degree of a chain is kept appropriate; the utility model discloses a hydro-cylinder promotes the forward motion of lapse pole, replaces automatically controlled by the liquid accuse, and the lapse pole drives hyoplastron parallel translation to reach the purpose of tight chain, factor of safety is high, and simple structure brings very big facility for daily production operation process, improves work efficiency.

Description

Hydraulic chain tightener for tail of scraper conveyor

Technical Field

The utility model relates to a coal mine equipment overhauls technical field, and more specifically the theory that says so, it relates to a scraper conveyor tail hydraulic pressure chain tightener.

Background

After the 40T scraper conveyor runs for a period of time, because the length of each chain ring of the chain can be increased, the increase of the length of the chain ring can influence the running of the scraper conveyor when accumulated to a certain length, the scraper chain is too loose, the chain is easily broken in the running process, even the chain wheel assembly of the machine head is damaged, and the electromechanical accident is easily caused after the scraper conveyor runs for a long time. The chain tightener is used for adjusting the tightness degree of the scraper chain to enable the scraper chain to have a certain pretightening force, and electromechanical accidents are avoided.

The existing chain tightening modes have great defects, the manual band-type brake is characterized in that one end of a scraper chain is fixed on a headstock, the other end of the scraper chain passes around a chain wheel of a machine head, the chain wheel is reversed by a motor at the machine head part, the chain is tightened, and the manual band-type brake is used after the chain is tightened; the hand-operated chain tightener adopts the matching of a fixed claw and a movable claw, achieves the purpose of tightening the chain in a hand-operated mode, and has the defect that the manpower cannot meet the requirement of tightening the chain and cannot shake when the 40T chute scraper chain is long and the environmental conditions of a chute are complex.

Chinese patent (application number: 201020527105.X, granted publication number: CN 201761904U) discloses an isosceles trapezoid-shaped chain tightener, which adopts a scraper with one end fixed and a chain with one end fixed, wherein the scraper and the chain are used in a matched manner in the using process, the chain tightener realizes the chain tightening effect through a hanging chain, and the chain tightener is matched with the hanging chain for use, so that the problem of manpower when the scraper chain is long and the environmental conditions of a scraper conveyor are complex is solved, but the chain tightener is not strong enough and is easy to deform.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a scraper conveyor tail hydraulic pressure tight chain ware, this utility model mainly used adjust scraper chain's elasticity degree, make it have certain pretightning force, avoid causing electromechanical accident.

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

a hydraulic chain tightener for a tail of a scraper conveyor comprises a hydraulic oil cylinder and chain tighteners, wherein the chain tighteners are welded on two sides of the tail of the scraper conveyor through two extension plates; chain tightener includes pushing away pole, two locating levers and two extension boards, wherein: the two extension plates are vertically and parallelly arranged, a slide way with an opening at one side for moving the pushing rod is arranged on each extension plate, a roller limiting plate is arranged at an opening, close to the slide way, of the outer side of each extension plate, and a welding clamping groove is fixedly arranged at the position, close to the slide way, of the outer side of each extension plate along the length direction of the slide way; one end of each positioning rod is provided with an oil cylinder connecting hole, the other end of each positioning rod is a square end face, a plurality of positioning holes are formed in the main body of each positioning rod, the two positioning rods are respectively arranged in the clamping grooves of the two extension plates, one end of each positioning rod, which is provided with the oil cylinder connecting hole, is far away from the roller limiting plate, the two positioning rods are connected through a pushing rod, and the hydraulic oil cylinder is connected with; the pushing rod is arranged on the inner sides of the two color plates, two ends of the pushing rod are arranged in the slideways of the two extension plates, a movable tongue plate is welded above the pushing rod, the installation direction of the movable tongue plate is the same as the moving direction of the pushing rod, and one side of the movable tongue plate protruding out is far away from the roller limiting plate; one side of the two extending plates, which is far away from the opening of the slide way, is fixedly connected with a concave positioning plate matched with the movable tongue plate, and the concave positioning plate is welded and fixed with the middle plate at the tail of the scraper conveyor.

Furthermore, the clamping groove comprises an upper clamping groove plate and a lower clamping groove plate, 6 groups of positioning holes corresponding to the positions are arranged on the upper clamping groove plate and the lower clamping groove plate, and the clamping groove is provided with positioning pins matched with the positioning holes.

Furthermore, the number of the positioning holes in the positioning rod is 6.

Furthermore, the installation height of the concave positioning plate is the same as the height of the movable tongue plate.

Furthermore, the concave positioning plate and the movable tongue plate are both provided with 45-degree chamfers.

Further, the roller limiting plate and the extension plate are connected through a bolt.

In conclusion, the invention has the following beneficial effects:

the utility model welds the concave positioning plate on the middle plate of the original tail, and each side of the concave positioning plate and each side of the movable tongue plate are provided with a chamfer angle of 45 degrees, so as to prevent the scraping plate from being blocked in the operation or reversing process; set up the locating hole on the draw-in groove, at tight chain in-process, hydraulic cylinder is flexible to the assigned position and uses the locating pin to inject the locating hole, promotes through the hydro-cylinder and passes the pole forward motion, replaces automatically controlled by the liquid accuse, passes the pole and drives hyoplastron parallel movement to reach the purpose of tight chain, factor of safety is high, simple structure, brings very big facility for daily production operation process, improves work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a schematic view of the positioning rod of the present invention;

fig. 4 is a schematic view of the usage state of the present invention.

In the figure: 1-pushing rod, 2-roller limiting plate, 3-slideway, 4-extending plate, 5-positioning rod, 6-clamping groove, 7-moving tongue plate, 8-concave positioning plate, 9-positioning hole, 10-oil cylinder connecting hole, 31-scraper conveyor tail, 32-oil cylinder fixing seat, 33-hydraulic oil cylinder, 34-positioning pin, 35-tail roller shaft and 36-tail roller.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): as shown in fig. 1 to 3, a hydraulic chain tightener for a tail of a scraper conveyor comprises a hydraulic oil cylinder 33 and a chain tightener, wherein the chain tightener is welded on two sides of the tail 31 of the scraper conveyor through two extension plates 4; chain tightener includes pushing away pole 1, two locating levers 5 and two extension boards 4, wherein: the two extension plates 4 are vertically and parallelly placed, the extension plates 4 are provided with a slide way 3 with an opening at one side for moving the push rod 1, the outer sides of the two extension plates 4 are provided with roller limiting plates 2 at the opening part close to the slide way 3, the roller limiting plates 2 are connected with the extension plates 4 through bolts, clamping grooves 6 are fixedly welded at the positions, close to the slide way 3, of the outer sides of the extension plates 4 along the length direction of the slide way 3, each clamping groove 6 comprises an upper clamping groove plate 61 and a lower

clamping groove plate

62, 6 groups of positioning holes 9 corresponding to the positions of the upper clamping groove plate 61 and the lower clamping groove plate 62 are arranged, and the clamping grooves 6 are provided with; an oil cylinder connecting hole 10 is formed in one end of a positioning rod 5, the other end of the positioning rod 5 is a square end face, a plurality of positioning holes 9 are formed in the main body of the positioning rod 5, in the embodiment, the number of the positioning holes 9 in the positioning rod 5 is 6, the purpose that a plurality of positioning holes are formed in a clamping groove 6 and the positioning rod 5 is to ensure that no buffer exists after a chain is tensioned, a single positioning hole cannot achieve the effect, the two positioning rods 5 are respectively arranged in clamping grooves 6 of two extension plates 4, the positioning rod 5 is arranged between an upper clamping groove plate 61 and a lower clamping groove plate 62, one end, provided with the oil cylinder connecting hole 10, of the positioning rod 5 is far away from a roller limiting plate 2, the two; the pushing rod 1 is arranged on the inner sides of the two extending plates 4, two ends of the pushing rod 1 are arranged in the slideways 3 of the two extending plates 4, the movable tongue plate 7 is welded above the pushing rod 1, the installation direction of the movable tongue plate 7 is the same as the moving direction of the pushing rod 1, and the protruding side of the movable tongue plate 7 is far away from the roller limiting plate 2; keep away from between two extension boards 4 slide 3 opening one side fixed connection and remove the concave locating plate 8 that hyoplastron 7 matches, the mounting height of concave locating plate 8 is the same with the height that removes hyoplastron 7, and concave locating plate 8 all sets up 45 chamfers with removal hyoplastron 7, prevents that the scraper blade from appearing the card pause phenomenon when operation or reversing, and concave locating plate 8 welds with the medium plate of scraper conveyor tail 31.

As shown in fig. 4, before installation, the present invention removes the original fixed roller plate of the tail 31 of the scraper conveyor, then welds and fixes the extension plate 4 of the present invention with the tail 31 of the scraper conveyor, welds two oil cylinder fixing seats 32 at two sides of the tail 31 of the scraper conveyor, fixes two oil cylinders 33 on the two oil cylinder fixing seats 32, installs the tail roller 36; when installing tail cylinder, demolish the cylinder limiting plate 2 of both sides, hang tail cylinder 36, adjust tail cylinder 36's position, let tail drum shaft 35 be in same height with slide 3, with the manpower with the drum shaft push slide 3 can, install after fixed with cylinder limiting plate 2 on two extension boards 4, even become closed loop, accomplish with scraper chain around tail cylinder 36 the utility model discloses an installation.

The initial installation position of tail cylinder 36 has a relation with the chain length of installation, must be taut the chain when using, and in the use, along with the chain is drawn the force influence, the chain link can become long gradually, and whole portion chain will become flexible in this time, uses the utility model discloses guarantee the chain tensioning. The utility model discloses during tight chain, connect hydraulic cylinder 33 and hand pump and accomplish, hydraulic cylinder 33 and locating lever 5 are through hydro-cylinder connecting hole 10 connection, and hydraulic cylinder 33 stretches out the position to arbitrary one locating hole, and hydraulic cylinder 33 passes locating lever 5 and moves, makes the square terminal surface of locating lever 5 and tail drum shaft 35 contact and promote tail drum 36 to move to the direction of cylinder limiting plate 2, and until the chain keeps the tensioning state, use locating pin 34 to insert the locating hole 9 that aligns on draw-in groove 6 and locating lever 5; if the chain is loosened, the positioning pin 34 is detached, the hydraulic oil cylinder 33 is retracted, the hydraulic oil cylinder 33 drags the positioning rod 5 to move, a proper chain ring is taken down to ensure that the scraper chain is proper in tightness, and the positioning pin 34 is inserted into the clamping groove 6 and the positioning hole 9 aligned on the positioning rod 5 to be positioned after the tightness of the chain is adjusted; after the operation for a period of time, to the chain that the scraper chain is influenced by the pulling force and becomes flexible, if the not hard up scope of chain is not enough when taking off the chain link, as long as suitably stretch out hydraulic cylinder 33, the square section of locating lever 5 promotes tail drum axle 35, make tail drum 36 move to the direction of cylinder limiting plate 2, guarantee the chain tensioning state, draw-in locating pin 34 location can in the locating hole 9 of alignment on draw-in groove 6 and the locating lever 5, when hydraulic cylinder 33's protrusion reaches the maximum position (namely locating pin 34 inserts at a locating hole of the farthest away from hydraulic cylinder 33), take off unnecessary chain link, receive the minimum (namely locating pin inserts at the nearest locating hole of distance hydraulic cylinder 33) with hydraulic cylinder 33 protrusion, it is suitable to ensure the scraper chain elasticity, insert locating pin 34 can.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a scraper conveyor tail hydraulic pressure chain tightener, includes hydraulic cylinder (33) and chain tightener, its characterized in that: the chain tightener is welded on two sides of the tail (31) of the scraper conveyor through two extension plates (4); chain tightener includes push rod (1), two locating levers (5) and two extension boards (4), wherein: the two extension plates (4) are vertically and parallelly arranged, the extension plates (4) are provided with a slide way (3) with an opening at one side for moving the push rod (1), the outer sides of the two extension plates (4) are provided with roller limit plates (2) at the opening close to the slide way (3), and a welding clamping groove (6) is fixedly arranged at the outer side of the extension plate (4) close to the slide way (3) along the length direction of the slide way (3); one end of each positioning rod (5) is provided with an oil cylinder connecting hole (10), the other end of each positioning rod is a square end face, a plurality of positioning holes (9) are formed in the main body of each positioning rod (5), the two positioning rods (5) are respectively arranged in the clamping grooves (6) of the two extending plates (4), one end of each positioning rod (5) provided with the oil cylinder connecting hole (10) is far away from the roller limiting plate (2), the two positioning rods (5) are connected through a pushing rod (1), and the hydraulic oil cylinder (33) is connected with the positioning rods (5) through the oil cylinder connecting holes (10; the pushing rod (1) is arranged on the inner sides of the two extending plates (4), two ends of the pushing rod (1) are arranged in the slideways (3) of the two extending plates (4), a movable tongue plate (7) is welded above the pushing rod (1), the installation direction of the movable tongue plate (7) is the same as the moving direction of the pushing rod (1), and the protruding part of the movable tongue plate (7) is far away from the roller limiting plate (2); one side, far away from the opening of the slide way (3), of the two extension plates (4) is fixedly connected with a concave positioning plate (8) matched with the movable tongue plate (7), and the concave positioning plate (8) is welded and fixed with the middle plate of the tail (31) of the scraper conveyor.

2. The scraper conveyor tail hydraulic chain tightener of claim 1, characterized in that: the clamping groove (6) comprises an upper clamping groove plate (61) and a lower clamping groove plate (62), and 6 groups of positioning holes (9) corresponding to the positions are formed in the upper clamping groove plate (61) and the lower clamping groove plate (62).

3. The scraper conveyor tail hydraulic chain tightener of claim 2, characterized in that: the clamping groove (6) is provided with a positioning pin (34) matched with the positioning hole (9).

4. The scraper conveyor tail hydraulic chain tightener of claim 1, characterized in that: the number of the positioning holes (9) on the positioning rod (5) is 6.

5. The scraper conveyor tail hydraulic chain tightener of claim 1, characterized in that: the mounting height of the concave positioning plate (8) is the same as the height of the movable tongue plate (7).

6. The scraper conveyor tail hydraulic chain tightener of claim 1, characterized in that: the concave positioning plate (8) and the movable tongue plate (7) are provided with chamfers of 45 degrees.

7. The scraper conveyor tail hydraulic chain tightener of claim 1, characterized in that: the roller limiting plate (2) is connected with the extension plate (4) through a bolt.