Tower-type double-chain belt pumping unit

Abstract

The invention discloses a tower-type double-chain belt pumping unit, comprising a tower bracket, wherein the top of the tower bracket is provided with a first belt roller and a second belt roller spaced in parallel apart from each other, one side of the tower bracket where the second belt roller is located is provided with an erect device cabin, and the side of the tower bracket where the first belt roller is located is provided with a vertically extending windproof guide rail; and a reciprocating loading belt, spanning over the first belt roller and the second belt roller, and comprising an inside end located in the device cabin of the tower bracket and an outside end extending outside the tower bracket, wherein the outside end is provided with a rope hanger for connecting a pumping rod, and the rope hanger is provided with a guide wheel mated with the windproof guide rail, wherein a balance box connected with the inside end of the loading belt and a first chain driving mechanism and a second chain driving mechanism for driving the lifting movement of the balance box are arranged in the device cabin. With the four-column tower-type structure adopted in the invention, the stability of the device can be improved greatly, the influence of wind load during pumping can be avoided, and the reliability of the device can be increased.

1 . A tower-type double-chain belt pumping unit, comprising:
 a tower bracket, wherein the top of the tower bracket is provided with a first belt roller and a second belt roller spaced in parallel apart from each other, one side of the tower bracket where the second belt roller is located is provided with an erect device cabin, and the side of the tower bracket where the first belt roller is located is provided with a vertically extending windproof guide rail; and   a reciprocating loading belt, spanning over the first belt roller and the second belt roller, and comprising an inside end located in the device cabin of the tower bracket and an outside end extending outside the tower bracket, wherein the outside end is provided with a rope hanger for connecting a pumping rod, and the rope hanger is provided with a guide wheel mated with the windproof guide rail,   wherein a balance box connected with the inside end of the loading belt and a first chain driving mechanism and a second chain driving mechanism for driving the lifting movement of the balance box are arranged in the device cabin.   
     
     
         2 . The tower-type double-chain belt pumping unit according to  claim 1 , wherein the balance box comprises a counterweight portion connected with the inside end of the loading belt, a driving sliding seat located below the counterweight portion, a first guiding wheel group arranged on the left and right sides of the counterweight portion for limiting left-right swinging, and a second guiding wheel group arranged on the left and right sides of the counterweight portion for limiting forward-backward swinging, wherein a first tackle synchronously movably connected with a chain of the first chain driving mechanism and a second tackle synchronously movably connected with a chain of the second chain driving mechanism are arranged in the driving sliding seat. 
     
     
         3 . The tower-type double-chain belt pumping unit according to  claim 2 , wherein each guiding wheel of the first guiding wheel group and of the second guiding wheel group is adjustable relative to the position of guide contact surface thereof. 
     
     
         4 . The tower-type double-chain belt pumping unit according to  claim 2 , wherein the counterweight portion comprises a plurality of counterweight grooves arranged in parallel for accommodating counterweights, each counterweight groove extending along a vertical direction. 
     
     
         5 . The tower-type double-chain belt pumping unit according to  claim 1 , wherein a climbing ladder is arranged to the tower bracket on at least one of both sides of the loading belt. 
     
     
         6 . The tower-type double-chain belt pumping unit according to  claim 1 , wherein the tower bracket is provided with multiple layers of maintenance platforms. 
     
     
         7 . The tower-type double-chain belt pumping unit according to  claim 1 , wherein the tower bracket comprises a base, upright columns arranged in rectangular form on the base and cross beams arranged between the upright columns, crosswise webs are arranged between the upright columns on the side of the tower bracket on one side of the first belt roller, and the windproof guide rail is supported on the cross beams and the webs. 
     
     
         8 . The tower-type double-chain belt pumping unit according to  claim 2 , wherein each of the first tackle and the second tackle comprises a tackle body, a driving shaft freely rotatably supported in a tapered hole cavity of the tackle body, a chain link on one side of the driving shaft, a first group of rolling wheels and a second group of rolling wheels horizontally arranged above the driving shaft, a third group of rolling wheels and a fourth group of rolling wheels horizontally arranged below the driving shaft. 
     
     
         9 . The tower-type double-chain belt pumping unit according to  claim 8 , wherein both a supporting shaft of the first group of rolling wheels and a supporting shaft of the second group of rolling wheels are eccentric shafts with rotational positions adjustable, and the first group of rolling wheels and the second group of rolling wheels abut to the guide rail in the driving sliding seat. 
     
     
         10 . The tower-type double-chain belt pumping unit according to  claim 1 , wherein the first chain driving mechanism and the second chain driving mechanism are simultaneously in a driving manner connected with the same reducer arranged on the base outside the device cabin, and the reducer is in a transmission manner connected with a motor arranged on a motor platform, wherein the motor platform is located above the base and spaced apart from the base.