A production process of elevator balance chain

Abstract

The present invention relates to a production process of an elevator balance chain, including: S1, rolling; S2, wire drawing: an inverted wire drawing machine draws steel, adds wire drawing powder to lubricate it during the wire drawing process, recycles the wire drawing powder, regularly replenishes the loss taken away, and avoids the generation of waste wire drawing powder; S3, braiding: a chain automatic braiding machine forms the steel into a spiral shape, cuts the spiral steel, and makes it into a ring shape, clamps the two ends of the ring steel, rotates one end 45 degrees, twists the link into a three-dimensional ring, completes the forming of a link, feeds the spiral material to penetrate the formed link, and forms a chain through a cycle; S4, butt welding; S5, correction; S6, shot blasting: utilizes the friction between leather and chain to lubricate and polish the balance chain. The present invention has the following advantages: improves the load-bearing capacity of the elevator balance chain, prevents the elevator balance chain from twisting and deforming, and improves the surface finish and smoothness.

Description

Technical field:

[0002] The invention relates to the field of elevator balancing chains, in particular to a production process of elevator balancing chains. Background technology:

[0004] The elevator balance chain is a component that balances the operation of the elevator. During the operation of the elevator, the length of the wire rope on the car side and the counterweight side is constantly changing, which causes the weight of the wire rope on both sides of the traction wheel to change. This change has little effect on the operating performance of the elevator when the elevator lifting height is not large, but when the lifting height exceeds a certain height, it will seriously affect the stability of the elevator operation and endanger the safety of passengers. For this reason, when the elevator lifting height exceeds a certain height, an elevator balance compensation chain must be set to balance the weight change caused by the height change.

[0005] The existing elevator balance chain has the following defects in the production process: 1. The steel is wound around the unit chain link in a ring structure, and then bent to form a ring structure, and the elevator balance chain is repeatedly formed. The elevator balance chain made by this process has a low load-bearing capacity and is prone to distortion; 2. When the chain is polished, the steel ball in the shot blasting machine is projected onto the product, and the shot blasting effect is achieved through impact and friction. However, after the balance chain is suspended and then projected by the steel ball, it is very easy to shake, the shot blasting effect is poor, the uniformity is low, and the finish and smoothness of the elevator balance chain cannot be guaranteed. When the steel ball hits the elevator balance chain, the internal stress of the elevator balance chain is concentrated, thereby affecting the load-bearing capacity of the elevator balance chain. Summary of the invention:

[0007] The purpose of the present invention is to overcome the above shortcomings and provide a production process for an elevator balance chain, thereby increasing the load-bearing capacity of the elevator balance chain, preventing the elevator balance chain from twisting and deforming, and improving the surface finish and smoothness.

[0008] The object of the present invention is achieved by the following technical solution: A production process of an elevator balance chain, comprising:

[0009] S1. Pointing: The end of the steel is rolled into a smaller size by a pointing machine and then passed through the drawing die hole of the wire drawing machine;

[0010] S2. Wire drawing: The inverted wire drawing machine draws the steel. During the wire drawing process, wire drawing powder is added to lubricate it. The wire drawing powder is recycled and the loss is regularly replenished to avoid the generation of waste wire drawing powder.

[0011] S3. Braiding: The automatic chain braiding machine forms the steel into a spiral shape, cuts the spiral steel, and shapes it into a ring. The two ends of the ring steel are clamped, and one end is rotated 45 degrees to twist the link into a three-dimensional ring. The forming of a link is completed, and the spiral material is fed into the formed link. The cycle forms a chain.

[0012] S4, butt welding: Use the chain automatic butt welding machine to make the two ends of the steel contact, pass a low voltage strong current, and after the steel is heated to a certain temperature and softened, perform axial pressure forging to form a butt welding joint;

[0013] S5. Calibration: Use the automatic chain calibration machine to calibrate the welded chain;

[0014] S6, Shot blasting: Use the friction between the leather and the chain to lubricate and polish the balance chain.

[0015] A further improvement of the present invention is that a special shot blasting device is used to perform shot blasting on the chain; the special shot blasting device comprises

[0016] A support seat;

[0017] A drum assembly, the drum assembly includes a first support frame and a second support frame placed on the left and right sides of the support seat, a drum is movably connected between the first support frame and the second support frame, a fixed shaft is provided at one end of the drum close to the first support frame, a reduction motor is also provided on the support seat, the motor shaft of the reduction motor is connected to the fixed shaft through a belt drive, the reduction motor rotates to drive the drum to rotate between the first support frame and the second support frame, an end face of the drum close to the first support frame is a closed face, an end face of the drum close to the second support frame is an open face, the interior of the drum is a hollow structure, and the inner wall of the drum is provided with spiral blades, and the extension direction of the blades is consistent with the extension direction of the drum;

[0018] A shot blasting assembly, the shot blasting assembly includes a plurality of steel brushes, the plurality of steel brushes are distributed along the spiral direction of the blades, and the plurality of steel brushes are placed on the inner wall of the drum between adjacent blades;

[0019] An upper and lower material assembly includes an upper hopper and a lower hopper placed at the outer end of the second support frame. The upper hopper and the lower hopper are arranged up and down, and one end of the upper hopper is connected to the inlet end of the rotating drum. The lower hopper extends downward and is connected to the inlet end of the rotating drum.

[0020] A further improvement of the present invention is that one end of the rotating drum is fixedly connected to the fixed shaft, the fixed shaft passes through the first support frame, and a bearing is sleeved on the outer circumference of the fixed shaft passing through the first support frame.

[0021] A further improvement of the present invention is that one end of the rotating drum close to the second supporting frame extends upwardly and obliquely.

[0022] A further improvement of the present invention is that the second support frame includes a support portion and an annular portion arranged on one side of the support portion, the annular portion is embedded in the open surface of the rotating drum, and balls are arranged on the outer circumference of the annular portion, and a slideway for the balls to slide is arranged on the inner wall of the open surface of the rotating drum.

[0023] A further improvement of the present invention is that: the inner wall of the rotating drum is provided with a plurality of steel brush holes for embedding steel brushes, the steel brushes are composed of a plurality of stainless steel wires, and the plurality of stainless steel wires are folded in half and embedded in the steel brush holes, and the stainless steel wires are perpendicular to the inner wall of the rotating drum.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1. When the elevator balance chain of the present invention is produced and braided, the steel is formed into a spiral shape, the spiral steel is cut off, and it is shaped into a ring. The two ends of the ring steel are clamped, and one end is rotated 45 degrees, and the link is twisted into a three-dimensional ring to complete the forming of a link. This braiding method improves the load-bearing capacity of the elevator balance chain and prevents the elevator balance chain from twisting and deforming; the spirally rotating balance chain collides and rubs with the steel brush and leather at the same time to ensure its surface finish and smoothness, and avoids the impact of the steel ball causing internal stress concentration of the elevator balance chain and affecting the load-bearing capacity of the elevator balance chain.

[0026] 2. The balance chain rolls inward with the rotation of the spiral blades, and is polished by the steel brush in the drum to achieve surface flatness. The balance chain moves in the opposite direction to the open end of the drum with the spiral blades through the reverse rotation of the reduction motor, and is discharged through the discharge hopper to ensure the uniformity of shot blasting. There is no need for hanging and manual feeding, which reduces labor intensity. At the same time, the balance chain is in close contact with the steel brush on the inner wall of the drum with the high-speed rotation of the spiral blades, which increases the friction between the balance chain and the steel brush, greatly improving the surface treatment effect. The blades are spiral structures, and the balance chain rotates around the blades in the drum, effectively avoiding the defect of large space occupied by hanging chains. Description of the drawings:

[0028] Figure 1 It is a schematic structural diagram of the special shot blasting device in the present invention.

[0029] Numbers in the figure:

[0030] 1-support seat, 2-first support frame, 3-second support frame, 4-rotating drum, 5-fixed shaft, 6-reduction motor, 7-belt, 8-closed surface, 9-open surface, 10-blade, 11-steel brush, 12-upper hopper, 13-lower hopper, 14-bearing, 15-support part, 16-circular ring part, 17-ball, 18-slideway. Specific implementation method:

[0032] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0033] include:

[0034] S1. Pointing: The end of the steel is rolled into a smaller size by a pointing machine and then passed through the drawing die hole of the wire drawing machine;

[0035] S2. Wire drawing: The inverted wire drawing machine draws the steel. During the wire drawing process, wire drawing powder is added to lubricate it. The wire drawing powder is recycled and the loss is regularly replenished to avoid the generation of waste wire drawing powder.

[0036] S3. Braiding: The automatic chain braiding machine forms the steel into a spiral shape, cuts the spiral steel, and shapes it into a ring. The two ends of the ring steel are clamped, and one end is rotated 45 degrees to twist the link into a three-dimensional ring. The forming of a link is completed, and the spiral material is fed into the formed link. The cycle forms a chain.

[0037] S4, butt welding: Use the chain automatic butt welding machine to make the two ends of the steel contact, pass a low voltage strong current, and after the steel is heated to a certain temperature and softened, perform axial pressure forging to form a butt welding joint;

[0038] S5. Calibration: Use the automatic chain calibration machine to calibrate the welded chain;

[0039] S6, Shot blasting: Use the friction between the leather and the chain to lubricate and polish the balance chain.

[0040] When the elevator balance chain of the present invention is produced and braided, steel is formed into a spiral shape, the spiral steel is cut and shaped into a ring, the two ends of the ring steel are clamped, one end is rotated 45 degrees, the link is twisted into a three-dimensional ring, and the forming of a link is completed. This braiding method improves the load-bearing capacity of the elevator balance chain and prevents the elevator balance chain from twisting and deforming; the spirally rotating balance chain collides and rubs with the steel brush and leather at the same time to ensure its surface finish and smoothness, and avoids the impact of the steel ball causing internal stress concentration of the elevator balance chain and affecting the load-bearing capacity of the elevator balance chain.

[0041] Furthermore, a special shot blasting device is used to shot blast the chain; Figure 1 As shown, the dedicated shot blasting device includes

[0042] A support base 1;

[0043] A drum assembly, the drum assembly includes a first support frame 2 and a second support frame 3 placed on the left and right sides of a support base 1, a drum 4 is movably connected between the first support frame 2 and the second support frame 3, a fixed shaft 5 is provided at one end of the drum 4 close to the first support frame 2, a reduction motor 6 is further provided on the support base 1, the motor shaft of the reduction motor 6 is connected to the fixed shaft 5 through a belt 7, the reduction motor 6 rotates to drive the drum 4 to rotate between the first support frame 2 and the second support frame 3, an end face of the drum 4 close to the first support frame 2 is a closed face 8, an end face of the drum 4 close to the second support frame 3 is an open face 9, the interior of the drum 4 is a hollow structure and the inner wall of the drum 4 is provided with spiral blades 10, the extension direction of the blades 10 is consistent with the extension direction of the drum 4;

[0044] A shot blasting assembly, the shot blasting assembly includes a plurality of steel brushes 11, the plurality of steel brushes 11 are distributed along the spiral direction of the blades 10, and the plurality of steel brushes 11 are placed on the inner wall of the drum 4 between adjacent blades 10;

[0045] A loading and unloading assembly, which includes an upper hopper 12 and a lower hopper 13 placed at the outer end of the second support frame 3. The upper hopper 12 and the lower hopper 13 are arranged up and down, and one end of the upper hopper 12 is connected to the inlet end of the rotating drum 4, and the lower hopper 13 extends downward and is connected to the inlet end of the rotating drum 4.

[0046] Working principle: Place some leather in the drum 4, extend one end of the balance chain into the upper hopper 12 and extend into the drum 4, the reduction motor 6 drives the drum 4 to rotate through the belt 7, and the balance chain rolls inward with the rotation of the spiral blade 10, and is polished by the steel brush 11 in the drum 4 to achieve surface flatness, and the leather hits the surface of the balance chain in the drum 4 to leave grease, thereby achieving the effect of improving the finish of the balance chain, and then the reduction motor 6 is reversed to make the balance chain move in the opposite direction with the spiral blade 10 to the open surface 9 end of the drum 4, and unload through the unloading hopper 13, without hanging loading and manual unloading, reducing labor intensity, and at the same time, the balance chain is in close contact with the steel brush 11 on the inner wall of the drum 4 with the high-speed rotation of the spiral blade 10, increasing the friction between the balance chain and the steel brush 11, greatly improving the surface treatment effect. The blade 10 is a spiral structure, and the balance chain rotates around the blade 10 in the drum 4, effectively avoiding the defect of large space occupied by hanging chains.

[0047] The reduction motor 6 of the present application is a forward and reverse motor, and the commercially available product Taichang 5IK60RGU-CF can be selected.

[0048] Furthermore, one end of the rotating drum 4 is fixedly connected to the fixed shaft 5 . The fixed shaft 5 is arranged to penetrate the first support frame 2 , and a bearing 14 is sleeved on the outer circumference of the fixed shaft 5 that penetrates the first support frame 2 .

[0049] The bearing 14 is limitedly matched with the fixed shaft 5 , and the reduction motor 6 rotates to drive the fixed shaft 5 to rotate through the belt 7 , thereby driving the fixed shaft 5 and the rotating drum 4 to rotate. The arrangement of the bearing 14 facilitates the rotation of the rotating drum 4 .

[0050] Furthermore, one end of the rotating drum 4 close to the second support frame 3 extends upward at an angle. When loading, multiple balance chains can load materials at the same time. It is only necessary to put one end of multiple balance chains into the rotating drum 4 together. The rotating drum 4 is tilted upward so that the open surface 9 of the rotating drum 4 is close to the upward hopper 12, which is convenient for loading the balance chain.

[0051] Furthermore, the second support frame 3 includes a support portion 15 and an annular portion 16 disposed on one side of the support portion 15, the annular portion 16 is embedded in the open surface 9 of the rotating drum 4, and a ball 17 is provided on the outer circumference of the annular portion 16, and a slideway 18 for accommodating the ball 17 to slide is provided on the inner wall of the open surface 9 of the rotating drum 4.

[0052] In the present application, the first support frame 2 and the second support frame 3 are rotatably arranged at the two ends of the rotating drum 4 respectively, and the rotation of the rotating drum 4 is driven by the rotation of the reduction motor 6. The support portion 15 of the second support frame 3 supports the rotating drum 4, and the annular portion 16 of the second support frame 3 is movably connected to the rotating drum 4 in an embedded manner, which ensures the flexibility of the rotating drum 4 while ensuring the stability of the connection.

[0053] Furthermore, the inner wall of the rotating drum 4 is provided with a plurality of steel brush holes for embedding the steel brushes 11 , the steel brushes are composed of a plurality of stainless steel wires, and the plurality of stainless steel wires are folded in half and embedded in the steel brush holes, and the stainless steel wires are perpendicular to the inner wall of the rotating drum 4 .

[0054] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A production process for an elevator balance chain, characterized in that: include: S1. Pointing: The end of the steel is rolled into a smaller size by a pointing machine and then passed through the drawing die hole of the wire drawing machine; S2. Wire drawing: The inverted wire drawing machine draws the steel. During the wire drawing process, wire drawing powder is added to lubricate it. The wire drawing powder is recycled and the loss is regularly replenished to avoid the generation of waste wire drawing powder. S3. Braiding: The automatic chain braiding machine forms the steel into a spiral shape, cuts the spiral steel, and shapes it into a ring. The two ends of the ring steel are clamped, and one end is rotated 45 degrees to twist the link into a three-dimensional ring. The forming of a link is completed, and the spiral material is fed into the formed link. The cycle forms a chain. S4, butt welding: Use the chain automatic butt welding machine to make the two ends of the steel contact, pass a low voltage strong current, and after the steel is heated to a certain temperature and softened, perform axial pressure forging to form a butt welding joint; S5. Calibration: Use the automatic chain calibration machine to calibrate the welded chain; S6, Shot blasting: Use the friction between the leather and the chain to lubricate and polish the balance chain.

2. The production process of an elevator balance chain according to claim 1, characterized in that: The chain is shot blasted by a special shot blasting device; the special shot blasting device comprises A support base (1); A drum assembly, the drum assembly comprising a first support frame (2) and a second support frame (3) arranged on left and right sides of a support base (1), a drum (4) being movably connected between the first support frame (2) and the second support frame (3), a fixed shaft (5) being provided at one end of the drum (4) close to the first support frame (2), a reduction motor (6) being further provided on the support base (1), a motor shaft of the reduction motor (6) being connected to the fixed shaft (5) by a belt (7), the reduction motor (6) rotating to drive the drum (4) to rotate between the first support frame (2) and the second support frame (3), an end surface of the drum (4) close to the first support frame (2) being a closed surface (8), an end surface of the drum (4) close to the second support frame (3) being an open surface (9), the drum (4) being hollow in structure and the inner wall of the drum (4) being provided with spiral blades (10), the extension direction of the blades (10) being consistent with the extension direction of the drum (4); A shot blasting assembly, comprising a plurality of steel brushes (11), wherein the plurality of steel brushes (11) are distributed along the spiral direction of the blades (10), and the plurality of steel brushes (11) are placed on the inner wall of a rotating drum (4) between adjacent blades (10); A loading and unloading assembly, the loading and unloading assembly comprising an upper hopper (12) and a lower hopper (13) disposed at the outer end of a second support frame (3), the upper hopper (12) and the lower hopper (13) being arranged vertically, and one end of the upper hopper (12) being connected to the inlet end of the rotating drum (4), and the lower hopper (13) extending downwardly in an inclined manner and being connected to the inlet end of the rotating drum (4).

3. The production process of an elevator balance chain according to claim 2, characterized in that: One end of the rotating drum (4) is fixedly connected to a fixed shaft (5), the fixed shaft (5) is arranged to penetrate the first support frame (2), and a bearing (14) is sleeved on the outer circumference of the fixed shaft (5) penetrating the first support frame (2).

4. The production process of an elevator balance chain according to claim 3, characterized in that: One end of the rotating drum (4) close to the second support frame (3) extends upwardly in an inclined manner.

5. The production process of an elevator balance chain according to claim 4, characterized in that: The second support frame (3) comprises a support portion (15) and an annular portion (16) disposed on one side of the support portion (15); the annular portion (16) is embedded in the open surface (9) of the rotating drum (4); a ball (17) is provided on the outer circumference of the annular portion (16); and a slideway (18) for accommodating the ball (17) to slide is provided on the inner wall of the open surface (9) of the rotating drum (4).

6. A production process for an elevator balance chain according to any one of claims 2 to 5, characterized in that: The inner wall of the rotating drum (4) is provided with a plurality of steel brush holes for embedding steel brushes (11), the steel brushes being composed of a plurality of stainless steel wires, and the plurality of stainless steel wires being folded in half and embedded in the steel brush holes, the stainless steel wires being perpendicular to the inner wall of the rotating drum (4).

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