Movable steel frame welding auxiliary trolley

Abstract

The utility model provides a movable steel frame welding auxiliary trolley which comprises a jack, a chassis and a jack shell, a small hydraulic cylinder is fixed on a bottom plate, the interior of the shell is divided into three layers, the middle layer is a large hydraulic cylinder, and the two outer layers are a first oil tank and a second oil tank; the small hydraulic cylinder is connected with the large hydraulic cylinder, the small hydraulic cylinder is connected with the second oil tank, and the large hydraulic cylinder is connected with the first oil tank through oil ways in the bottom plate, a large piston rod is arranged above the large hydraulic cylinder in the shell, a small piston is arranged in the small hydraulic cylinder, and a supporting cup is fixed to the top of the large piston rod; trays are fixedly mounted on the upper surfaces of the supporting cups; through holes are formed in the two ends of the base, and threads are arranged on the inner surface of the middle through hole. The device further comprises a fixed guide rail and an adjusting guide rail. A support is fixedly connected to the chassis; a laser instrument is fixedly installed on the chassis. The problems that an existing welding auxiliary device is poor in application flexibility, high in cost, unstable in welding seam quality and low in production efficiency are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and relates to a movable steel frame welding auxiliary trolley. Background Art

[0002] With the continuous development of science and technology in the construction industry, modern buildings increasingly focus on the uniqueness and aesthetics of spatial shapes. The appearance of special-shaped steel structures is also favored by designers due to its strong sense of technology and simple construction. Before the construction of the appearance of special-shaped steel structures, there is no direct connection relationship between each steel frame before welding. Due to special requirements for position and angle, welding cannot be formed in one processing in the factory, and multiple steel frames need to be pieced together and welded on-site.

[0003] In order to ensure the welding quality, each manufacturer has customized some special welding equipment according to its own production process and operation habits. For example, a special intelligent welding equipment for facilitating quick fixing of workpieces involved in the patent application number: CN202310046523.9 makes the cutting surfaces of two welding pipes parallel through a clamping mechanism to ensure the alignment of the cutting surfaces of the subsequent two welding pipes. The intelligent special equipment for automatic circumferential seam welding involved in the patent application number: CN202221317700.X is provided with a chuck moving seat and a chuck fixing seat, and realizes the clamping of materials through the cooperation of the chuck moving seat and the chuck fixing seat, and realizes the centering of materials through the setting of a positioning adjusting frame, improving the loading efficiency and production efficiency. However, the customized equipment can only match the welding of steel frames at one angle, with poor application flexibility, high investment cost, and weak economy, and cannot be widely promoted. The most widely used method is still manual hand-held welding. For example, the utility model involved in the patent application number: CN202222588555.5 uses a copper pipe as an extended connection part, utilizes the spring elastic force to reset and push the clamping crown, and clamps the electrode in the chuck under the action of the taper of the clamping crown, making full use of the welding material length of the electrode to weld narrow and long welds. For example, the device involved in the patent application number: CN202223084781.6 can conveniently convert semi-automatic hand-held welding into automatic welding, perform simulation welding operations, improve welding quality, ensure the uniformity of product welding, and provide production efficiency. Using this welding method requires welders to calculate the distance between each steel frame and repeatedly align the components to be welded during the welding process. The quality of the steel frame weld depends to a large extent on the technical level of the operator, which takes a lot of time and the weld quality is unstable. The labor intensity of the operator is high and the production efficiency is low. Therefore, the utility model designs a movable steel frame welding auxiliary trolley to solve the above problems. Summary of the Invention

[0004] In order to achieve the above object, the utility model provides a movable steel frame welding auxiliary trolley, which solves the problems of poor application flexibility, high cost, unstable weld quality, and low production efficiency existing in the prior art.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A movable steel frame welding auxiliary trolley, comprising: a jack and a chassis. The outer shell and the small hydraulic cylinder of the jack are fixed on the bottom plate. The inner part of the outer shell is divided into three layers. The middle layer is a large hydraulic cylinder, and the outer two layers are the first oil tank and the second oil tank. The small hydraulic cylinder is connected to the large hydraulic cylinder, the small hydraulic cylinder is connected to the second oil tank, and the large hydraulic cylinder is connected to the first oil tank through the internal oil circuit of the bottom plate. Above the large hydraulic cylinder in the outer shell, there is a large piston rod. Inside the small hydraulic cylinder, there is a small piston. At the top of the large piston rod, there is a supporting cup for supporting the steel frame. On the upper surface of the supporting cup, a tray is fixedly installed. The tray is a fixture that can be tightened towards the middle on both sides. On the jack, there is a lifting rod, and the lifting rod is connected to the top end of the small piston. At the lower part of the bottom plate, there is a base. At both ends of the base, a plurality of through holes are opened along the horizontal direction. The inner surface of the middle through hole is provided with threads.

[0007] It further includes: a fixed guide rail and an adjusting guide rail. The fixed guide rail passes through the outer through holes of the base; the adjusting guide rail passes through the middle through hole of the base. The surface of the adjusting guide rail is provided with threads, and the thread depth is the same as the thread on the inner surface of the middle through hole of the base. One end of the adjusting guide rail is provided with an adjusting handle. On the chassis, a support is fixedly connected. Both ends of the fixed guide rail are fixedly connected to the support, and both ends of the adjusting guide rail are slidably connected to the support. A laser instrument is fixedly installed on the chassis.

[0008] Two of the movable steel frame welding auxiliary trolleys are provided, and they are respectively distributed at the left and right ends of the steel frame.

[0009] Further, three through holes are opened along the horizontal direction at both ends of the base.

[0010] Further, among the three through holes, the inner surfaces of the two outer through holes are smooth surfaces.

[0011] Further, there are two fixed guide rails.

[0012] Further, the surface of the fixed guide rail is a smooth surface.

[0013] Further, the two fixed guide rails and the adjusting guide rail are all round steel.

[0014] Further, the laser instrument is arranged on the chassis of one trolley.

[0015] Further, the jack is a hydraulic jack. The inner wall of the outer shell of the jack is slidably connected to a large piston; the top of the large piston is fixed with a large piston rod; the inner wall of the small hydraulic cylinder is slidably connected to a small piston.

[0016] Further, there are three oil circuits in the jack. The oil circuit connecting the large hydraulic cylinder and the first oil tank is a pressure relief oil circuit. There is a branch oil circuit on the pressure relief oil circuit, and the branch oil circuit is isolated from the outside through a pressure relief screw.

[0017] Further, a ball valve is provided on the oil path, and the ball valve is a one-way ball valve.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. Using this device can avoid the process of repeatedly aligning the steel frame beams before welding. By using a trolley to align the steel frame, it can reduce the weld quality defects caused by the shaking of the auxiliary fixing workers due to technical reasons during welding, greatly improve the weld quality of the steel frame, and reduce the defective rate of components.

[0020] 2. Reduce the labor intensity of workers and improve the work efficiency of personnel. During the welding process, originally two people were required to be at both ends of the steel frame respectively to cooperate with the tower crane to control the alignment of the welds of the steel frame. By using the device of the present utility model, two people can be at both ends of the steel frame respectively, and the alignment of the welds of the steel frame can be completed by two trolleys, avoiding the use of a tower crane, greatly improving safety, saving costs, and greatly reducing labor costs.

[0021] 3. During the adjustment process of aligning the interfaces of the steel frame, this device uses a jack, and through the trays that can be tightened from both sides to the middle, the steel frame on the trolley can be moved up and down; through the fixed guide rail and the adjustable guide rail, the steel frame on the trolley can be moved left and right; then use a laser instrument to detect the position and angle of the interface for fine adjustment to ensure that the position and angle of the interface meet the requirements and ensure the accuracy of the steel frame welds, and the operation process is simple.

[0022] 4. This device has a simple structure, is convenient and practical. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is the front view of the structure of the device of the present utility model.

[0025] Figure 2 It is the top view of the structure of the device of the present utility model.

[0026] In the figure, 1. tray, 2. screw, 3. cup, 4. pressure relief screw, 5. large piston rod, 6. small piston, 7. base, 8. chassis, 9. wheel, 10. lifting rod, 11. fixed guide rail, 12. adjustable guide rail, 13. support, 14. adjusting handle, 15. housing, 16. laser instrument, 17. small hydraulic cylinder, 18. large hydraulic cylinder, 19. first fuel tank, 20. ball valve, 21. second fuel tank, 22. bottom plate. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Refer to Figure 1 - Figure 2 , the present invention provides a movable steel frame welding auxiliary trolley. It includes: a jack. In this embodiment, the jack is a hydraulic jack, which is composed of a housing 15, a bottom plate 22, a large piston rod 5, a small piston 6, a lifting rod 10, a small hydraulic cylinder 17, a large hydraulic cylinder 18, a first fuel tank 19, a second fuel tank 21, three ball valves 20, a pressure relief screw 4, and a base 7. The housing 15 and the small hydraulic cylinder 17 of the jack are fixed on the thick and circular bottom plate 22. The interior of the housing 15 is vertically divided into three layers. The middle layer is the large hydraulic cylinder 18, and the outer two layers are the first fuel tank 19 and the second fuel tank 21; the small hydraulic cylinder 17 is connected to the large hydraulic cylinder 18 through a U-shaped oil passage inside the bottom plate 22, the small hydraulic cylinder 17 is connected to the second fuel tank 21 through a U-shaped oil passage inside the bottom plate 22, and the large hydraulic cylinder 18 is connected to the first fuel tank 19 through a U-shaped oil passage inside the bottom plate 22. This oil passage is a pressure relief oil passage, and a branch oil passage is provided on the pressure relief oil passage. This branch oil passage is isolated from the outside through the pressure relief screw 4; ball valves 20 are provided on the two hydraulic oil passages between the small hydraulic cylinder 17 and the large hydraulic cylinder 18, and between the small hydraulic cylinder 17 and the second fuel tank 21. A ball valve 20 is provided in the pressure relief oil passage. The ball valve 20 is a one-way ball valve.

[0029] The small piston 6 is slidably connected to the inner wall of the small hydraulic cylinder 17, the large piston is slidably connected to the inner wall of the housing 15, the large piston rod 5 is fixed to the top of the large piston, and the lifting rod 10 is hinged to the small piston 6;

[0030] The top of the large piston rod 5 is fixedly connected to the cup 3 through the screw 2. The cup 3 is used to support the lifted steel frame to more evenly distribute the pressure of the steel frame; a tray 1 is fixedly installed on the upper surface of the cup 3. The tray 1 is a fixture that can be tightened from both sides to the middle and can clamp the steel frame.

[0031] A base 7 is fixedly installed at the lower part of the bottom plate 22. Through holes are opened at both ends of the base 7 along the horizontal direction. The inner surfaces of the two outer through holes are smooth surfaces, and the inner surface of the middle through hole is provided with threads.

[0032] It further includes: two fixed guide rails 11 and an adjustable guide rail 12. The two fixed guide rails 11 pass through the two outer through holes of the base 7, and the surfaces of the fixed guide rails 11 are smooth surfaces; the adjustable guide rail 12 passes through the middle through hole of the base 7, and the surface of the adjustable guide rail 12 is provided with threads, and the thread depth is the same as the threads on the inner surface of the middle through hole of the base 7. The purpose of setting the threads is to facilitate the disassembly of the adjustable guide rail 12; one end of the adjustable guide rail 12 is provided with an adjustment handle 14; the two fixed guide rails 11 are parallel to the adjustable guide rail 12; the two fixed guide rails 11 and the adjustable guide rail 12 are both made of round steel. The two ends of the two fixed guide rails 11 are fixedly connected to four supports, and the two ends of the adjustable guide rail 12 are slidably connected to two supports 13. The six supports 13 are fixedly connected to the chassis 8, and the lower part of the chassis 8 is rollingly connected to wheels 9, and the wheels 9 are provided with brake locking devices.

[0033] A laser instrument 16 is installed on the chassis 8 of the trolley, which can detect the position and angle of the weld.

[0034] Working process:

[0035] In this embodiment, the movable steel frame welding auxiliary trolley is usually used in pairs during construction. The trolleys are distributed at the left and right ends of the steel frame. For steel frames with long lengths and large weights, the number of trolleys can also be freely increased according to actual situations. The trolleys are used to weld two regular steel frames into an integral special-shaped steel frame. The specific working process is as follows:

[0036] First, place the two ends of a steel frame to be welded on the trays 1 of the two auxiliary trolleys. Since the trays 1 are clamps that tighten from both sides to the middle, it can ensure that the steel frame will not shake when placed on the trays. And transport the steel frame to be welded to the welding site.

[0037] Then, by pressing down the lifting rod 10, according to the lever principle, a relatively small force can be used to move the small piston 6 downward, and the hydraulic oil in the small hydraulic cylinder 17 is pressed into the large hydraulic cylinder 18 through the oil circuit. According to Pascal's principle, in a closed fluid system, the pressure applied to the fluid will be transmitted equally to every part of the fluid. The area of the large piston is larger than that of the small piston 6, enabling force amplification. The large piston drives the large piston rod 5 to move upward, jacking up the steel frame; when lifting the lifting rod 10 upward, the small piston 6 moves upward, and the hydraulic oil flows from the second fuel tank 21 into the small hydraulic cylinder 17. By repeating this process, the steel frame is jacked up to the required height to ensure that the interfaces between the two steel frames are aligned vertically. The adjustment range is 10 - 30 cm. When it is necessary to increase the height of the steel frame, the lifting rod 10 is shaken back and forth to move the steel frame upward; when it is necessary to lower the height of the steel frame, the pressure relief screw 4 is turned, and the hydraulic oil in the large hydraulic cylinder 18 flows back into the first fuel tank 19, and the large piston drives the large piston rod 5 to move downward to achieve the downward movement of the steel frame.

[0038] If there is a large height deviation between the interface of one end of the steel frame on the trolley and that of another steel frame, the lifting rod 10 at the end with a large deviation is shaken for rough adjustment. Then, according to the actual deviation, the lifting rods 10 of the two trolleys are shaken alternately to ensure that the interface height of one end of the steel frame on the trolley is flush with that of another steel frame.

[0039] Next, since the steel frame is heavy, by pulling the adjustment handles 14 of the two trolleys simultaneously, the entire base 7 can be controlled to move left and right, thereby moving the two steel frames left and right to ensure that the interfaces between the two steel frames are aligned horizontally. The left - right movement range is 200 mm.

[0040] Then, a laser instrument 16 on the chassis 8 of one trolley is used to detect whether the position and angle of the welding interface meet the requirements. If not, fine adjustment is performed through the lifting rod 10 and the adjustment handle 14 until the requirements are met.

[0041] Finally, the locking device of the auxiliary trolley is activated to prevent the trolley from slipping. Then the flat - welding work can be started.

[0042] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A movable steel frame welding auxiliary trolley, comprising: A jack and chassis (8), characterized in that: the outer shell (15) and the small hydraulic cylinder (17) of the jack are fixed on a bottom plate (22); the inner shell (15) is divided into three layers, the middle layer is a large hydraulic cylinder (18), and the outer two layers are a first oil tank (19) and a second oil tank (21); the small hydraulic cylinder (17) and the large hydraulic cylinder (18), the small hydraulic cylinder (17) and the second oil tank (21), and the large hydraulic cylinder (18) and the first oil tank (19) are all connected through the internal oil circuit of the bottom plate (22); the large hydraulic cylinder in the outer shell (15) is connected to the large hydraulic cylinder (18) and the second oil tank (21). A large piston rod (5) is provided above (18), a small piston (6) is provided in the small hydraulic cylinder (17), and a support cup (3) for supporting the steel frame is fixed on the top of the large piston rod (5); a tray (1) is fixedly installed on the upper surface of the support cup (3), and the tray (1) is a clamp whose two sides can be tightened toward the middle; a lifting rod (10) is provided on the jack, and the lifting rod (10) is connected to the top of the small piston (6); a base (7) is provided at the lower part of the bottom plate (22), and a plurality of through holes are provided at both ends of the base (7) along the horizontal direction, and a thread is provided on the inner surface of the middle through hole; It also includes: a fixed guide rail (11) and an adjustable guide rail (12), wherein the fixed guide rail (11) passes through an outer through hole of the base (7); the adjustable guide rail (12) passes through a middle through hole of the base (7), a surface of the adjustable guide rail (12) is provided with threads, and the depth of the threads is consistent with the threads on the inner surface of the middle through hole of the base (7); an adjustable handle (14) is provided at one end of the adjustable guide rail (12); a support (13) is fixedly connected to the chassis (8), both ends of the fixed guide rail (11) are fixedly connected to the support (13), and both ends of the adjustable guide rail (12) are slidably connected to the support (13); and a laser instrument (16) is fixedly installed on the chassis (8); Two movable steel frame welding auxiliary trolleys are provided, which are respectively distributed at the left and right ends of the steel frame.

2. The movable steel frame welding auxiliary vehicle according to claim 1 is characterized in that: Three through holes are provided at both ends of the base (7) along the horizontal direction.

3. The movable steel frame welding auxiliary vehicle according to claim 2 is characterized in that: Among the three through holes, the inner surfaces of the two outer through holes are smooth surfaces.

4. The movable steel frame welding auxiliary vehicle according to claim 1 is characterized in that: There are two fixed guide rails (11).

5. The movable steel frame welding auxiliary vehicle according to claim 4 is characterized in that: The surface of the fixed guide rail (11) is a smooth surface.

6. The movable steel frame welding auxiliary vehicle according to claim 1 is characterized in that: The two fixed guide rails (11) and the adjustable guide rail (12) are both made of round steel.

7. The movable steel frame welding auxiliary vehicle according to claim 1 is characterized in that: The laser instrument (16) is arranged on a chassis (8) of a trolley.

8. The movable steel frame welding auxiliary vehicle according to claim 1 is characterized in that: The jack is a hydraulic jack, wherein the inner wall of the outer shell (15) of the jack is slidably connected to a large piston; a large piston rod (5) is fixed on the top of the large piston; and the inner wall of the small hydraulic cylinder (17) is slidably connected to a small piston (6).

9. The movable steel frame welding auxiliary vehicle according to claim 8 is characterized in that: The jack is provided with three oil circuits. The oil circuit connecting the large hydraulic cylinder (18) and the first oil tank (19) is a pressure relief oil circuit. A branch oil circuit is provided on the pressure relief oil circuit. The branch oil circuit is isolated from the outside world by a pressure relief screw (4).

10. The movable steel frame welding auxiliary vehicle according to claim 9, characterized in that: A ball valve (20) is provided on the oil circuit, and the ball valve (20) is a one-way ball valve.

Images