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CN-122009749-A - Scraper machine, chain tightening device of scraper machine and use method of chain tightening device

CN122009749ACN 122009749 ACN122009749 ACN 122009749ACN-122009749-A

Abstract

The invention belongs to the technical field of conveying equipment, in particular to a scraper and a chain tightening device of the scraper and a use method thereof, aiming at the problems that a scraper of a traditional scraper is unstable in fixation, insufficient in limit and complex in tension adjustment of a transmission chain and easy to loosen; the device is provided with a limiting structure, is assisted by a rolling wheel through the cooperation of a plug-in rod and an annular limiting groove, ensures the stability of a scraping plate, is provided with two box bodies I, a connecting plate and a positioning fixing rod are arranged at the head and the tail of a transmission chain, an adjusting structure such as a bidirectional spiral screw rod is arranged in each box body I, the tension is adjusted by controlling the movement of the positioning fixing rod through a rotating rod and the like, a unidirectional ratchet gear and a braking operation rod are used for preventing reverse rotation, an elastic sleeve is matched with a linear displacement rod, ensures the tension balance of the two transmission chains, and is mainly used for stable material conveying.

Inventors

  • ZHAO LONG
  • QIAO GUOBIN
  • YAN ZHENBANG

Assignees

  • 山西众联科创机械制造股份有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (10)

  1. 1. A scraper machine, characterized by comprising: a material input port (2) is arranged on one side of the top of the rectangular shell (1), and a material output port (3) is arranged on one side of the bottom of the rectangular shell, which is far away from the material input port (2); The two transmission spindles (4) are rotatably connected in the rectangular machine shell (1), and two chain gears (5) are fixedly sleeved on the outer wall of each transmission spindle (4); two transmission chains (6) are respectively meshed with two adjacent chain gears (5), and the two chain gears (5) meshed with the same transmission chain (6) are respectively arranged on two transmission main shafts (4); the scraping plate bodies (8) are arranged on one sides of the two transmission chains (6), and the scraping plate bodies (8) are fixedly connected with the two transmission chains (6) through two U-shaped fixing brackets (7) respectively; The limiting structure comprises annular limiting grooves (20) formed in the inner walls of two sides of the rectangular casing (1) and two inserting connection rods (10) arranged in the scraping plate body (8), wherein the inserting connection rods (10) are elastically abutted against the inner wall of the scraping plate body (8) through compression springs II (43), the end parts of the inserting connection rods (10) extend into the annular limiting grooves (20) to be in sliding fit with the annular limiting grooves, and when the scraping plate body (8) is positioned below the chain gears (5) to convey materials, the inserting connection rods (10) are kept in fit with the annular limiting grooves (20) under the action of the compression springs II (43) to prevent the scraping plate body (8) from being separated from the U-shaped fixing support (7).
  2. 2. A scraper machine according to claim 1, characterized in that the U-shaped fixing support (7) is fixedly connected with the scraper body (8) through bolts, guide slide rails (9) are arranged on the inner walls of the two sides of the U-shaped fixing support (7), and the side edges of the scraper body (8) are in sliding fit with the guide slide rails (9) so as to limit the transverse displacement of the scraper body (8).
  3. 3. The scraper machine according to claim 2, wherein the limiting structure further comprises a sliding baffle (12) which is arranged in the hollow cavity (11) of the scraper body (8) in a sliding mode, the top of the sliding baffle (12) is connected with the top of the hollow cavity (11) through a tension spring I (13), a linear sliding rod (17) which extends to the lower portion of the scraper body (8) is fixedly arranged at the bottom of the sliding baffle (12), a rolling wheel (19) is rotatably connected to the bottom end of the linear sliding rod (17), and when the scraper body (8) moves to the lower portion of the sprocket (5), the rolling wheel (19) abuts against the inner wall of the bottom of the rectangular machine shell (1) to force the inserting connection rod (10) to keep an extending state.
  4. 4. A scraper machine according to claim 3, wherein one end of the inserting connection rod (10) is provided with a trapezoid guide groove (16) through a traction pull rod (15), a pushing rod (14) matched with the trapezoid guide groove (16) is fixed at the bottom of the sliding baffle (12), when the scraper plate body (8) is positioned above the chain wheel (5), the linear sliding rod (17) is pulled upwards, and the pushing rod (14) extrudes the trapezoid guide groove (16) to retract the inserting connection rod (10) and release the matching with the annular limiting groove (20).
  5. 5. Chain tensioner for a scraper machine for tensioning a drive chain (6) in a scraper machine according to claim 4, characterized in that it comprises: two box bodies I (23) which are respectively arranged at two sides of the transmission chain (6); Two positioning fixing rods (22) which penetrate through the connecting plates (21) at the head end and the tail end of the transmission chain (6) in a sliding manner; The adjusting structure comprises a bidirectional screw rod (24) rotatably connected in two box bodies I (23), and two movable bases (25) in threaded connection with positive and negative thread sections of the bidirectional screw rod (24), wherein the movable bases (25) are fixedly connected with the end parts of positioning fixing rods (22), and when the bidirectional screw rod (24) is rotated, the two movable bases (25) drive the positioning fixing rods (22) to move in opposite directions to tighten a transmission chain (6).
  6. 6. The chain tightening device of the scraper machine according to claim 5, wherein the ends of the two bidirectional screw rods (24) extend into a box body II (29) and are fixedly provided with a bevel gear I (26), a rotating rod (30) is arranged in the box body II (29), two bevel gears II (44) meshed with the bevel gear I (26) are fixedly arranged on the rotating rod (30), one end of the rotating rod (30) is provided with a hexagonal clamping groove (32), a unidirectional ratchet gear (33) is fixedly sleeved on the outer wall of the rotating rod (30), and a brake operating rod (35) which is elastically abutted against the unidirectional ratchet gear (33) through a tension spring II (37) is arranged in the box body II (29) to prevent the bidirectional screw rods (24) from reversing.
  7. 7. The chain tightening device of the scraper machine according to claim 6, wherein the side wall of the box body I (23) is provided with a linear sliding groove (27), and the end part of the positioning fixing rod (22) penetrates through the linear sliding groove (27) in a sliding way.
  8. 8. The chain tensioner of claim 7, further comprising an elastic sleeve (41) having two linear displacement rods (39) slidably connected therein, the inner ends of the two linear displacement rods (39) being connected by a compression spring I (42), and the outer ends of the two linear displacement rods being provided with a hexagonal positioning groove (40).
  9. 9. The chain tensioner of claim 8, wherein the two rotary rods (30) are respectively fixed with hexagonal operating rods (38) which are in plug-in fit with the hexagonal positioning grooves (40), and pushing the two linear displacement rods (39) compresses the springs I (42) to enable the hexagonal positioning grooves (40) to synchronously engage with the two hexagonal operating rods (38).
  10. 10. A method of using a chain tensioner of a scraper machine, applied to the chain tensioner of a scraper machine of claim 9, comprising the steps of: S1, butting a hexagonal wrench with a hexagonal clamping groove (32) on a rotary rod (30), and preparing to drive the rotary rod (30) to rotate; S2, rotating the hexagonal wrench to drive the rotating rod (30) to rotate, wherein the rotating rod (30) drives the two bidirectional screw rods (24) to rotate through the cooperation of the bevel gear I (26) and the bevel gear II (44), and meanwhile, the rotating rod (30) drives the unidirectional ratchet gear (33); S3, the bidirectional screw rod (24) rotates to drive the two movable bases (25) to move in opposite directions; s4, the movable base (25) drives the positioning fixing rod (22) to move, and the positioning fixing rod (22) controls the head end and the tail end of the transmission chain (6) to approach through the connecting plate (21), so that tension tightening of the transmission chain (6) is completed; s5, when the tension of the two transmission chains (6) is required to be synchronously regulated, pushing the two linear displacement rods (39) to the middle, compressing the springs I (42), and enabling the hexagonal positioning grooves (40) at one end of the linear displacement rods (39) to be in butt joint with the corresponding hexagonal operation rods (38) so as to connect the two rotary rods (30); S6, driving one rotary rod (30) to rotate, driving the other rotary rod (30) to synchronously rotate through a butt joint linear displacement rod (39) and a hexagonal operation rod (38), and synchronously adjusting the tension of the two transmission chains (6) to keep tension balance.

Description

Scraper machine, chain tightening device of scraper machine and use method of chain tightening device Technical Field The invention relates to the technical field of conveying equipment, in particular to a scraper machine, a chain tightening device of the scraper machine and a using method of the chain tightening device. Background In industrial production, the scraper is used as an important material conveying device and is widely applied to a plurality of fields such as mines, chemical industry, grain processing and the like. The bulk material conveying device has the main functions of conveying bulk materials from one position to another position and has the advantages of large conveying capacity, stable operation, strong adaptability and the like. The traditional scraper is generally composed of a shell, a transmission main shaft, a sprocket, a transmission chain, a scraper plate and the like. The material enters from the input port at the top of the machine shell, moves along the bottom of the machine shell under the pushing action of the scraping plate, and finally is discharged from the output port at the bottom of the machine shell. However, in the actual operation, the conventional scraper machine has some problems: on the one hand, the fixation mode of the scraping plate is not stable enough. In the long-time operation process, due to the impact and friction of materials, the connecting bolt between the scraping plate and the transmission chain is easy to loosen, so that the scraping plate and the transmission chain are separated, the normal operation of the scraping plate machine is influenced, and even equipment faults can be possibly caused. In the operation process of the traditional scraper, the stability of the scraper is poor, and particularly, the scraper is easy to shake when conveying materials, so that the conveying effect is influenced; On the other hand, the tension adjustment of the drive chain is inconvenient. The tension of the transmission chain is changed due to factors such as abrasion, temperature change and the like in the running process, if the tension is too large, the abrasion of the transmission part is increased, the service life of equipment is reduced, and if the tension is too small, the transmission chain can jump teeth, so that the conveying efficiency is affected. The conventional tension adjusting method generally needs to adjust the positions of the transmission main shaft and the sprocket, is complex to operate, and is difficult to ensure tension balance of two transmission chains. Therefore, there is a need for improvements to existing scrapers to increase their operational stability and reliability. Disclosure of Invention The invention aims to solve the defects of unstable fixation, insufficient limit and complex tension adjustment and easy loosening of a transmission chain of the existing scraper, and provides a scraper, a chain tightening device of the scraper and a use method of the chain tightening device. In order to achieve the above purpose, the present invention adopts the following technical scheme: A scraper machine comprising: A rectangular casing, a rectangular casing body and a rectangular casing body, one side of the top of the device is provided with a material input port, the bottom being remote from the material inlet one side is provided with a material output port; The two transmission spindles are rotatably connected in the rectangular shell, and two chain gears are fixedly sleeved on the outer wall of each transmission spindle; The two transmission chains are respectively meshed with the two adjacent chain gears, and the two chain gears meshed with the same transmission chain are respectively arranged on the two transmission main shafts; the scraping plate bodies are arranged on one sides of the two transmission chains and are fixedly connected with the two transmission chains through two U-shaped fixing brackets respectively; The limiting structure comprises annular limiting grooves formed in the inner walls of the two sides of the rectangular casing and two inserting rods arranged in the scraping plate body, wherein the inserting rods are elastically abutted against the inner wall of the scraping plate body through compression springs II43, the ends of the inserting rods extend into the annular limiting grooves to be in sliding fit with the annular limiting grooves, and when the scraping plate body is positioned below the chain gears to convey materials, the inserting rods are kept to be matched with the annular limiting grooves under the action of the compression springs II43, so that the scraping plate body is prevented from being separated from the U-shaped fixing support. In one possible design, the U-shaped fixed bolster passes through bolt and scrapes flitch body fixed connection, and U-shaped fixed bolster both sides inner wall is equipped with the direction slide rail, scrapes flitch body side and direction slide rail sliding fi