Liftable welding device for elevator hollow guide rail machining

Abstract

The utility model relates to the technical field of welding, in particular to a liftable welding device for processing a hollow guide rail of an elevator, which comprises a processing table, a T-shaped groove for surrounding the guide rail, a welding cylinder for lifting welding and an edge grinding wheel for grinding the guide rail, a clamping wheel for positioning and clamping the guide rail, a transmission rod for controlling the clamping wheel to move and a limiting plate for improving the lifting precision of the welding cylinder are arranged in the T-shaped groove, the T-shaped groove is formed in the center of the side face of the machining table, penetrates through the whole machining table and surrounds the guide rail at the same time, and the welding cylinder is located above the machining table and aligned to the center of the top of the machining table. The edge grinding wheel is arranged on one side of the machining table and clamps the two sides of the guide rail. The machining table and the T-shaped groove are used for surrounding the welding position, temperature reduction of the welding position is avoided, machining efficiency is improved, the clamping wheels moving synchronously are used for clamping the guide rail, the welding cylinder can be aligned with the welding seam, the limiting plate is used for enabling the welding cylinder and the welding seam to be located on the same horizontal plane, and machining efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a liftable welding device for processing elevator hollow guide rails. Background Technique

[0002] The hollow guide rail has a T-shaped structure and is produced by folding a single steel plate. Before use, the weld between the two bottom edges of the folded hollow guide rail needs to be welded. Due to the different thicknesses of different steel plates, the thicknesses of the bottom edges of the folded guide rails are also different. For traditional fixed welding cylinders, manual adjustment of the distance between the welding cylinder and the weld is required. Due to insufficient accuracy, not only the welding efficiency of the weld is low, but also uneven welds will be produced, affecting normal use. Therefore, a liftable welding device for processing elevator hollow guide rails is needed to accurately control the distance between the welding cylinder and the weld.

[0003] Chinese patent document CN116944649A discloses a high-frequency welding device for forming hollow guide rails, including a conveying mechanism, an inductor fixing mechanism, and a welding mechanism; by setting the conveying mechanism, the inductor fixing mechanism, and the welding mechanism, functions such as conveying the guide rail, fixing the inductor, and welding are integrated. When this solution is used, the hollow guide rail is manually placed on the operating table, the hollow guide rail is clamped by the conveying mechanism and driven to move in the direction of the welding mechanism. The hollow guide rail passes through the inductor fixing mechanism, and the hollow guide rail is clamped and moved by the welding mechanism. The magnetic rod and the inductor in the inductor fixing mechanism cooperate to start high-frequency welding operations to weld the gap on the hollow guide rail. The grinding wheel is installed at the upper end of the joint of the hollow guide rail, and the up and down position of the grinding wheel is adjusted by the folding mechanism. The grinding wheel grinds the upper end surface of the hollow guide rail to make the welded part beautiful.

[0004] The above solution still has several improvement points: when welding, the joint between the welding cylinder and the weld is exposed to the air, resulting in large heat loss and reduced welding efficiency; the lifting welding cylinder cannot accurately align with the weld. Content of the Utility Model

[0005] To solve the problems of the prior art, the utility model provides a liftable welding device for processing elevator hollow guide rails, including a processing table, a T-shaped groove for surrounding the guide rail, a welding cylinder for lifting welding, and a grinding wheel for grinding the guide rail. In the T-shaped groove, there are clamping wheels for positioning and clamping the guide rail, a transmission rod for controlling the movement of the clamping wheels, and a limiting plate for improving the lifting accuracy of the welding cylinder. The T-shaped groove is arranged at the center of the side of the processing table and runs through the entire processing table while surrounding the guide rail. The welding cylinder is located above the processing table and is aligned with the center of the top of the processing table. The grinding wheel is arranged beside the processing table and clamps both sides of the guide rail. The clamping wheels are arranged in an array in the T-shaped groove and are located on both sides of the guide rail. The transmission rod is arranged in the processing table and is perpendicular to the groove direction of the T-shaped groove. The limiting plate is slidably installed at the center of the top of the processing table.

[0006] Preferably, a connecting rod, a joint and a threaded rod are connected to the clamping wheel. The connecting rod is installed on the side surface of the clamping wheel, the joint is arranged at the center of the connecting rod, and the threaded rod passes through the processing table and is rotatably connected to the joint.

[0007] Preferably, threaded holes are provided on the processing table. A rod handle and a handle are connected to one end of the threaded rod away from the joint, and the threaded rod passes through the processing table from the threaded holes.

[0008] Preferably, positioning holes are provided on the processing table. The transmission rod passes through the positioning holes and is located below the threaded rod. Large gears are installed at both ends of the transmission rod, and a small gear is installed at one end of the threaded rod away from the joint.

[0009] Preferably, side plates are installed on both sides of the limiting plate. A cavity is provided on the processing table below the side plates. The lower surface of the side plates is connected with a first spring and the first spring is located in the cavity.

[0010] Preferably, the lower surface of the side plates is connected with a column and a pressing wheel. The column is fixedly installed on the lower surface of the side plates and is beside the first spring, and the pressing wheel is rotatably installed on the column.

[0011] Preferably, the welding cylinder is connected with a mounting bracket, a telescopic column, a bracket and a retaining ring. The mounting bracket is fixedly installed on the side surface of the processing table, the telescopic column is arranged at the top of the mounting bracket, one end of the bracket is connected to the top of the telescopic column, the other end is connected to the welding cylinder, and the retaining ring is arranged on the welding cylinder.

[0012] Preferably, a rotating rod, a slider, a second spring and a base are provided on the edge grinding wheel. The rotating rod passes through the edge grinding wheel and is installed on the top of the slider. The slider is arranged in the base, and the second spring is arranged between the side surface of the slider and the inner wall of the base.

[0013] The beneficial effects of the present utility model compared with the prior art are as follows:

[0014] 1. The present utility model uses the processing table and the T-shaped groove to surround the welding part, avoiding the reduction of the temperature of the welding part and improving the processing efficiency. Specifically, the structure of the T-shaped groove is similar to the cross-section of the guide rail. This welding device uses the processing table and the T-shaped groove to surround the guide rail, ensuring that heat will not be lost in a large area when welding the guide rail in the T-shaped groove, and improving the welding efficiency.

[0015] 2. The present utility model uses the synchronously moving clamping wheels to clamp the guide rail, enabling the welding cylinder to align with the weld seam. Specifically, there are two threaded rods located on both sides of the guide rail. By rotating the threaded rods, the side surfaces of the clamping wheels are made to fit with the side surfaces of the guide rail to achieve the purpose of clamping the guide rail. Through the transmission rod, when turning the handle on one threaded rod, the other threaded rod will also rotate synchronously.

[0016] 3. The utility model uses a limit plate to keep the welding cylinder and the weld seam on the same horizontal plane, further improving the processing efficiency. Specifically, the size of the column is the maximum length that the welding cylinder can pass through the limit plate. After the welding cylinder passes through the limit plate, the limit plate squeezes the column to drive the pressure wheel until the pressure wheel fits with the guide rail. At this time, the top of the welding cylinder is on the same plane as the weld seam of the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of a liftable welding device for processing elevator hollow guide rails.

[0018] Figure 2 is a cross-sectional view of the T-shaped groove in a liftable welding device for processing elevator hollow guide rails.

[0019] Figure 3 is a perspective view of the processing table in a liftable welding device for processing elevator hollow guide rails.

[0020] Figure 4 is a perspective view of the transmission rod in a liftable welding device for processing elevator hollow guide rails.

[0021] Figure 5 is a perspective view of the limit plate in a liftable welding device for processing elevator hollow guide rails.

[0022] Figure 6 is a cross-sectional view of the edge grinding wheel in a liftable welding device for processing elevator hollow guide rails.

[0023] The reference numerals in the figure are: 1, processing table; 2, T-shaped groove; 3, clamping wheel; 31, connecting rod; 32, joint; 33, threaded rod; 331, threaded hole; 332, rod handle; 333, handle; 4, transmission rod; 41, positioning hole; 42, pinion; 43, large gear; 5, limit plate; 51, side plate; 511, pressure wheel; 512, column; 52, cavity; 53, first spring; 6, welding cylinder; 61, mounting bracket; 62, telescopic column; 63, bracket; 64, retaining ring; 7, edge grinding wheel; 71, rotating rod; 72, slider; 73, second spring; 74, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To further understand the features, technical means, specific purposes, and functions achieved by the present utility model, the following provides a more detailed description of the present utility model in conjunction with the drawings and specific embodiments.

[0025] See Figures 1 to 6As shown in the figure, a liftable welding device for processing hollow elevator guide rails includes a processing table 1, a T-shaped groove 2 for surrounding the guide rail, a welding cylinder 6 for lifting and welding, and an edge grinding wheel 7 for grinding the guide rail. In the T-shaped groove 2, there are clamping wheels 3 for positioning and clamping the guide rail, a transmission rod 4 for controlling the movement of the clamping wheels 3, and a limiting plate 5 for improving the lifting accuracy of the welding cylinder 6. The T-shaped groove 2 is arranged at the center of the side of the processing table 1, runs through the entire processing table 1, and surrounds the guide rail. The welding cylinder 6 is located above the processing table 1 and is aligned with the center of the top of the processing table 1. The edge grinding wheel 7 is arranged beside the processing table 1 and clamps both sides of the guide rail. The clamping wheels 3 are arranged in an array in the T-shaped groove 2 and are located on both sides of the guide rail. The transmission rod 4 is arranged in the processing table 1 and is perpendicular to the groove direction of the T-shaped groove 2. The limiting plate 5 is slidably installed at the center of the top of the processing table 1.

[0026] The structure of the T-shaped groove 2 is similar to the cross-section of the guide rail. This welding device uses the processing table 1 and the T-shaped groove 2 to surround the guide rail, ensuring that heat will not be lost in a large area when welding the guide rail in the T-shaped groove 2, thus improving the welding efficiency. The clamping wheels 3 support both sides of the guide rail in the T-shaped groove 2 to ensure that the guide rail can pass through the processing table 1 smoothly. In order to ensure that the welding cylinder 6 can be aligned with the weld on the guide rail, the transmission rod 4 is used to ensure that the clamping wheels 3 on both sides of the guide rail can clamp the guide rail synchronously. Since the size and model of the hollow guide rail are not fixed, the height of the weld on different guide rails from the upper surface of the processing table 1 is different. Therefore, the welding cylinder 6 can be lifted and the limiting plate 5 is used to ensure that its height is consistent with that of the guide rail weld.

[0027] See Figures 1 to 4 As shown in the figure, a connecting rod 31, a joint 32, and a threaded rod 33 are connected to the clamping wheel 3. The connecting rod 31 is installed on the side of the clamping wheel 3. The joint 32 is arranged at the center of the connecting rod 31. The threaded rod 33 passes through the processing table 1 and is rotatably connected to the joint 32.

[0028] The threaded rod 33 is rotated to push the clamping wheel 3 to clamp both sides of the guide rail. The connecting rod 31 ensures that the threaded rod 33 can push and pull the clamping wheels 3 on the same side synchronously. The joint 32 is used to prevent the clamping wheel 3 from rotating around the threaded rod 33. When the guide rail enters the T-shaped groove 2, the clamping wheel 3 supports the guide rail and reduces the wear on the guide rail through rolling contact. At this time, the threaded rod 33 is rotated so that the side surface of the clamping wheel 3 fits the side surface of the guide rail to achieve the purpose of clamping the guide rail.

[0029] See Figures 1 to 3 As shown in the figure, a threaded hole 331 is provided on the processing table 1. One end of the threaded rod 33 away from the joint 32 is connected with a rod handle 332 and a handle 333. The threaded rod 33 passes through the processing table 1 from the threaded hole 331.

[0030] The rod handle 332 and the handle 333 are used to facilitate the rotation of the threaded rod 33. The threaded hole 331 has the same size as the threaded rod 33. There are two threaded rods 33 located on both sides of the guide rail. By means of the transmission rod 4, when the handle 333 on one threaded rod 33 is rotated, the other threaded rod 33 will also rotate synchronously.

[0031] See Figure 3 As shown, positioning holes 41 are provided on the processing table 1. The transmission rod 4 passes through the positioning holes 41 and is located below the threaded rod 33. Large gears 43 are installed at both ends of the transmission rod 4, and small gears 42 are installed at the ends of the threaded rod 33 far from the joint 32.

[0032] The positioning holes 41 are used to install the transmission rod 4. The large gears 43 and the small gears 42 mesh with each other. When one side of the threaded rod 33 is rotated, the small gear 42 on the same side rotates and drives the meshing large gear 43 to rotate, thereby driving the transmission rod 4 to rotate. At the same time, the large gear 43 on the other side of the transmission rod 4 drives the small gear 42 on the other threaded rod 33 to rotate, ensuring the synchronous rotation of the two threaded rods 33.

[0033] See Figures 1 to 5 As shown, side plates 51 are installed on both sides of the limit plate 5. Cavities 52 are provided on the processing table 1 below the side plates 51. The lower surface of the side plate 51 is connected with a first spring 53 and the first spring 53 is located in the cavity 52.

[0034] The limit plate 5 is used to limit the falling distance of the welding cylinder 6. The side plate 51 is used to install the first spring 53. When the side plate 51 is squeezed by the welding cylinder 6, the first spring 53 is compressed in the cavity 52. When the welding cylinder 6 leaves the processing table 1, the first spring 53 resets the side plate 51 so that the limit plate 5 is level with the upper surface of the processing table 1 again.

[0035] See Figure 5 As shown, the lower surface of the side plate 51 is connected with a column 512 and a pressure wheel 511. The column 512 is fixedly installed on the lower surface of the side plate 51 and is beside the first spring 53. The pressure wheel 511 is rotatably installed on the column 512.

[0036] The pressure wheel 511 contacts the upper surface of the guide rail to limit the falling distance of the side plate 51. The size of the column 512 is the maximum length that the welding cylinder 6 can pass through the limit plate 5. When the welding cylinder 6 passes through the limit plate 5, the limit plate 5 squeezes the column 512 to squeeze the pressure wheel 511 until the pressure wheel 511 fits with the guide rail. At this time, the top of the welding cylinder 6 is on the same plane as the guide rail weld.

[0037] See Figures 1 to 5As shown in the figure, the welding cylinder 6 is connected with a mounting bracket 61, a telescopic column 62, a bracket 63 and a retaining ring 64. The mounting bracket 61 is fixedly installed on the side of the processing table 1. The telescopic column 62 is arranged on the top of the mounting bracket 61. One end of the bracket 63 is connected to the top of the telescopic column 62, and the other end is connected to the welding cylinder 6. The retaining ring 64 is arranged on the welding cylinder 6.

[0038] The mounting bracket 61 and the telescopic column 62 provide the lifting ability for the welding cylinder 6. The bracket 63 is used to align the welding cylinder 6 with the center of the upper surface of the processing table 1. The size of the retaining ring 64 is larger than that of the limiting plate 5, so that the welding cylinder 6 can pass through the limiting plate 5 while the retaining ring 64 cannot pass through, ensuring that the limiting plate 5 can limit the falling distance of the welding cylinder 6.

[0039] See Figure 6 As shown in the figure, a rotating rod 71, a slider 72, a second spring 73 and a base 74 are arranged on the edge grinding wheel 7. The rotating rod 71 passes through the edge grinding wheel 7 and is installed on the top of the slider 72. The slider 72 is arranged in the base 74. The second spring 73 is arranged between the side of the slider 72 and the inner wall of the base 74.

[0040] Since the guide rail is formed by folding a straight plate and the thickness at the folding part is uneven, the edge grinding wheel 7 is used to grind the side of the guide rail and ensure the flatness of the upper surface of the guide rail, avoiding that the pressing wheel 511 cannot fit the upper surface of the guide rail. At the same time, the rotating rod 71 and the slider 72 are used to assist the clamping wheel 3 to clamp the two sides of the guide rail, and the second spring 73 is used to increase the automatic clamping force of the edge grinding wheel 7.

[0041] The above embodiments only represent one or several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation to the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A lifting welding device for processing hollow elevator guide rails, comprising a processing table (1), a T-shaped groove (2) for surrounding the guide rail, a welding cylinder (6) for lifting welding, and an edge grinding wheel (7) for grinding the guide rail; It is characterized in that A clamping wheel (3) for positioning and clamping the guide rail, a transmission rod (4) for controlling the movement of the clamping wheel (3), and a limit plate (5) for improving the lifting accuracy of the welding tube (6) are arranged in the T-shaped groove (2). The T-shaped groove (2) is arranged at the center of the side of the processing table (1) and penetrates the entire processing table (1) while surrounding the guide rail. The welding tube (6) is located above the processing table (1) and is aligned with the top center of the processing table (1). The edge grinding wheel (7) is arranged on the side of the processing table (1) and clamps both sides of the guide rail. The clamping wheel (3) is installed in an array in the T-shaped groove (2) and is located on both sides of the guide rail. The transmission rod (4) is arranged in the processing table (1) and is perpendicular to the groove direction of the T-shaped groove (2). The limit plate (5) is slidably installed at the top center of the processing table (1).

2. The liftable welding device for machining hollow guide rails of an elevator according to claim 1, characterized in that: The clamping wheel (3) is connected with a connecting rod (31), a joint (32) and a threaded rod (33). The connecting rod (31) is installed on the side of the clamping wheel (3), the joint (32) is arranged at the center of the connecting rod (31), and the threaded rod (33) passes through the processing table (1) and is rotatably connected to the joint (32).

3. The liftable welding device for machining hollow guide rails of an elevator according to claim 2, characterized in that: A threaded hole (331) is provided on the processing table (1); one end of the threaded rod (33) away from the joint (32) is connected to a rod handle (332) and a handle (333); the threaded rod (33) passes through the processing table (1) through the threaded hole (331).

4. The liftable welding device for machining hollow guide rails of an elevator according to claim 3, characterized in that: A positioning hole (41) is provided on the processing table (1), a transmission rod (4) passes through the positioning hole (41) and is located below the threaded rod (33), large gears (43) are installed at both ends of the transmission rod (4), and a small gear (42) is installed on the end of the threaded rod (33) away from the joint (32).

5. The liftable welding device for machining hollow guide rails of an elevator according to claim 1, characterized in that: Side plates (51) are installed on both sides of the limiting plate (5); a cavity (52) is provided on the processing table (1) below the side plates (51); a first spring (53) is connected to the lower surface of the side plates (51) and the first spring (53) is located in the cavity (52).

6. The liftable welding device for machining hollow guide rails of an elevator according to claim 5, characterized in that: The lower surface of the side plate (51) is connected with a column (512) and a pressure wheel (511); the column (512) is fixedly mounted on the lower surface of the side plate (51) and is located beside the first spring (53); and the pressure wheel (511) is rotatably mounted on the column (512).

7. The liftable welding device for machining hollow guide rails of an elevator according to claim 1, characterized in that: The welding tube (6) is connected with a mounting frame (61), a telescopic column (62), a bracket (63) and a retaining ring (64); the mounting frame (61) is fixedly mounted on the side of the processing table (1); the telescopic column (62) is arranged on the top of the mounting frame (61); one end of the bracket (63) is connected to the top of the telescopic column (62) and the other end is connected to the welding tube (6); and the retaining ring (64) is arranged on the welding tube (6).

8. The liftable welding device for machining hollow guide rails of an elevator according to claim 1, characterized in that: The edging wheel (7) is provided with a rotating rod (71), a slider (72), a second spring (73) and a base (74); the rotating rod (71) passes through the edging wheel (7) and is installed on the top of the slider (72); the slider (72) is arranged in the base (74); and the second spring (73) is arranged between the side surface of the slider (72) and the inner wall of the base (74).

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