Joint closing mechanism for contact net steel pipe column joint closing and welding all-in-one machine

Abstract

The utility model discloses a joint closing mechanism for a joint closing and welding all-in-one machine for a steel pipe column of an overhead line system. A bottom supporting wheel is fixed in the middle of the front end of a base through a support; the upper pressing device comprises a supporting frame fixed to the rear end of the base, a vertical hydraulic cylinder with a cylinder body fixed to the upper end of the supporting frame, an upper guide fixed to a piston rod of the vertical hydraulic cylinder and a pressing wheel. The upper guide wheel and the pressing wheel are positioned right above the bottom supporting wheel; the two-side pressing device comprises a left supporting base, a right supporting base, two-side hydraulic cylinders and two-side pressing wheels, wherein the left supporting base and the right supporting base are symmetrically fixed to the base, the upper end faces of the left supporting base and the right supporting base are inclined faces, cylinder bodies of the two-side hydraulic cylinders are fixed to the left supporting base and the right supporting base respectively, and the two-side pressing wheels are fixed to piston rods of the two-side hydraulic cylinders in an inclination angle adjustable mode respectively. The pressing wheels on the two sides are located on the two sides above the bottom supporting wheel respectively. According to the utility model, not only can steel pipe columns with large pipe diameters be seamed, but also steel pipe columns with small and medium pipe diameters can be seamed, and a workpiece is free of deformation and high in quality during seaming, so that later welding is facilitated, and the seaming welding quality of the manufactured steel pipe columns is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of contact network steel pipe column manufacturing, and relates to a seam-joining mechanism for a contact network steel pipe column seam-joining welding integrated machine. Background Art

[0002] The raw materials for the production of circular steel pipe columns (hereinafter referred to as steel pipe columns) of electrified railway contact networks are generally steel plates, and the basic processing and production process is steel plate cutting → beveling → bending → jointing → spot welding → welding → grinding → assembly → inspection → galvanizing → re-inspection. Among them, the jointing process is carried out by a hydraulic jointing machine, and manual spot welding is used during the jointing. After the jointing is completed, the welding process is carried out. During welding, manual gas shielded welding is first used for base welding, and then an automatic submerged arc welding machine is used for secondary welding. It can be seen that the steel pipe column has the current status of low productivity, high labor intensity and unstable quality in the two processes of jointing and welding.

[0003] The technology of the existing domestic integrated seam welding machines is relatively mature, but since the inclination angle of the clamping devices on both sides cannot be adjusted, they can only be used in the production of large and medium-diameter steel pipe columns. For small and medium-diameter steel pipe columns with a diameter of φ200 to φ400, and some products have tapers, the wall thickness is usually 10 to 16 mm, the existing integrated machines cannot be directly used in the production of this product.

[0004] Therefore, we propose a seam-joining mechanism for a contact network steel pipe column seam-joining welding integrated machine to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned problems existing in the prior art and to provide a seam-joining mechanism for a contact network steel pipe column seam-joining welding integrated machine, which can not only seam large-diameter steel pipe columns, but also small and medium-diameter steel pipe columns. During seam joining, the workpiece is not deformed and has high quality, thereby facilitating subsequent welding and achieving high-quality seam welding of the manufactured steel pipe columns.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seam-joining mechanism for a contact network steel pipe column seam-joining welding machine, comprising a base, an upper clamping device, a bottom support wheel and clamping devices on both sides; the bottom support wheel is fixed to the middle of the front end of the base through a bracket;

[0007] The upper clamping device comprises a support frame fixed to the rear end of the base, a vertical hydraulic cylinder whose cylinder body is fixed to the upper end of the support frame, and an upper guide and clamping wheel fixed to the piston rod of the vertical hydraulic cylinder; the upper guide and clamping wheel is located directly above the bottom support wheel;

[0008] The clamping devices on both sides include a left support seat and a right support seat with inclined upper end faces symmetrically fixed on the base, hydraulic cylinders on both sides with inclined distribution and cylinder bodies respectively fixed on the left support seat and the right support seat, and clamping wheels on both sides fixed on the piston rods of the hydraulic cylinders on both sides with adjustable inclination angles; the clamping wheels on both sides are respectively located on both sides above the bottom support wheel; when in a closed state, the workpiece is placed on the bottom support wheel, and the upper guide and clamping wheels are pressed at the gap just above the workpiece, and the clamping wheels on both sides symmetrically tilt and clamp the workpiece on both sides of the workpiece in a closed manner at an inclination angle of 0-40° with the horizontal clamping degree.

[0009] Further preferably, the specific structure of the side pressure wheel being fixed on the piston rod of the side hydraulic cylinder with an adjustable tilt angle is: the upper end of the connecting piece is fixed to the piston rod of the side hydraulic cylinder through a first pin shaft, and the lower end thereof is rotatably fixed to the connecting block protruding from the rear end of the side base of the side pressure wheel through a second pin shaft; the connecting rod is composed of a middle long nut and two adjustable bolts threadedly connected to the two ends of the middle long nut, the upper adjustable bolt is fixed to the upper end of the connecting piece, and the lower adjustable bolt is fixed to the upper end of the side base of the side pressure wheel; a linear guide is fixed to the inclined surface of the upper end of the left support seat or the right support seat, and the bottom surface of the connecting piece is slidably fixed to the linear guide rail. In this way, when the piston rod of the side hydraulic cylinder drives the connecting piece to move up and down, the connecting piece can move up and down along the linear guide rail with high precision. The inclination of the side clamping wheel is not only determined by the inclined surface of the left support seat or the right support seat, but also its inclination angle can be adjusted by the connecting rod. The inclination angle can be adjusted within the inclination range of 0-40° with the horizontal clamping degree. The smaller the diameter of the workpiece steel pipe column, the smaller the angle between the side clamping wheel and the horizontal clamping degree.

[0010] Further preferably, the specific structure of the upper guide and pressure wheel being fixed on the vertical hydraulic cylinder piston rod is: the vertical hydraulic cylinder piston rod is fixed to the middle of the upper end of the gear rod through a connecting shaft, the middle of the lower end of the gear rod is fixed to the upper end of the base of the upper guide and pressure wheel; vertical racks are fixed on the symmetrical vertical support frames at both ends of the support frame; the gears at both ends of the gear rod are respectively meshed with the two vertical racks. In this way, the upper guide and pressure wheel are more stable and accurate in the process of moving up and down.

[0011] Further preferably, the upper guide and clamping wheel comprises an upper base, a plurality of cylindrical clamping wheels at the front end, and a thin-sheet guide wheel at the rear end that can be inserted into the gap of the workpiece steel pipe column; the clamping wheel and the guide wheel are hinged in the groove at the lower end of the upper base. In this way, when the workpiece steel pipe column is transported to the bottom of the upper guide and clamping wheel, it can be accurately positioned.

[0012] Further preferably, the bottom support wheel comprises a lower base and a plurality of support wheels hinged in the upper end groove of the lower base, and the support wheel is composed of two integrally formed tapered columns with a small middle diameter and large diameters at both ends. In this way, it has the function of supporting and limiting the workpiece steel pipe column.

[0013] Further preferably, the side clamping wheel comprises a side base and a plurality of side supporting wheels hinged in the lower end groove of the side base, and the side supporting wheel is composed of two integrally formed tapered columns with a small middle diameter and large diameters at both ends. In this way, the workpiece steel pipe column has the function of clamping and limiting.

[0014] The side clamping wheel of the joint mechanism of the utility model has a large adjustable range of the clamping direction, so that not only the height of the clamping on both sides of the workpiece steel pipe column can be adjusted, but also the horizontal clamping degree of the clamping on both sides of the steel pipe column can be adjusted, and the adjustable range is wide. When the diameter of the workpiece steel pipe column changes, it not only depends on the feed distance of the side hydraulic cylinder piston rod, but also can adjust the feed angle of the side clamping wheel to ensure that the workpiece steel pipe column can still be clamped at the most suitable position on the side of the workpiece steel pipe column when the diameter changes, so as to make the joint gap of the workpiece steel pipe column smaller and ensure that the workpiece steel pipe column does not deform. The utility model is applied to the contact network steel pipe column joint welding integrated machine, which not only facilitates the reliability and high quality of welding, but also improves the qualified rate and quality of the product. The utility model can also be used alone, and then manual spot welding is performed and then secondary welding is performed with an automatic submerged arc welding machine. The utility model can not only implement jointing of steel pipe columns of small and medium diameters, but also implement jointing of steel pipe columns of large diameters.

[0015] In short, the utility model can not only join large-diameter steel pipe columns, but also join small and medium-diameter steel pipe columns. During the joining, the workpieces are not deformed and the quality is high, which facilitates subsequent welding and the manufactured steel pipe column joints are of high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 3 It is a left-side structural schematic diagram of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the upper guide and clamping wheels, the bottom support wheels and the support frame in the utility model;

[0021] Figure 6 For the utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the upper guide and clamping wheels in the utility model.

[0023] In the figure: 1. support frame; 2. vertical hydraulic cylinder; 3. upper guide and clamping wheel; 4. vertical rack; 5. gear rod; 6. left support seat; 7. right support seat; 8. side hydraulic cylinder; 9. connecting piece; 10. side clamping wheel; 11. middle long nut; 12. bottom support wheel; 13. connecting shaft; 14. base; 15. first pin shaft; 16. second pin shaft; 17. side base; 18. adjustable bolt; 31. clamping wheel; 32. guide wheel; 33. upper base. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 7 As shown, this embodiment includes a base 14, an upper clamping device, a bottom support wheel 12 and clamping devices on both sides; the bottom support wheel 12 is fixed to the middle of the front end of the base 14 through a bracket. Preferably, the bottom support wheel 12 includes a lower base and a plurality of support wheels hinged in the upper end groove of the lower base, and the support wheel is composed of two integrally formed tapered columns with a small middle diameter and large diameters at both ends. In this way, the workpiece steel pipe column has a supporting and limiting effect.

[0026] The upper clamping device includes a support frame 1 fixed to the rear end of the base 14, a vertical hydraulic cylinder 2 whose cylinder body is fixed to the upper end of the support frame 1, and an upper guide and clamping wheel 3 fixed to the piston rod of the vertical hydraulic cylinder 2. The upper guide and clamping wheel 3 is located directly above the bottom support wheel 12. Preferably, the specific structure of the upper guide and clamping wheel 3 fixed to the piston rod of the vertical hydraulic cylinder 2 is: the piston rod of the vertical hydraulic cylinder 2 is fixed to the middle of the upper end of the gear rod 5 through the connecting shaft 13, and the middle of the lower end of the gear rod 5 is fixed to the upper end of the base of the upper guide and clamping wheel 3; vertical racks 4 are fixed to the vertical support frames symmetrical at both ends of the support frame 1; and the gears at both ends of the gear rod 5 are respectively meshed with the two vertical racks 4. In this way, the upper guide and clamping wheel 3 is more stable and accurate during the up and down movement. Preferably, the upper guide and clamping wheel 3 comprises an upper base 33, a plurality of cylindrical clamping wheels 31 at the front end, and a thin-sheet guide wheel 32 at the rear end that can be inserted into the gap of the workpiece steel pipe column; the clamping wheel 31 and the guide wheel 32 are hinged in the groove at the lower end of the upper base 33. In this way, when the workpiece steel pipe column is transported to the bottom of the upper guide and clamping wheel 3, it can be accurately positioned.

[0027] The clamping devices on both sides include a left support seat 6 and a right support seat 7 with inclined upper end faces symmetrically fixed on a base 14, hydraulic cylinders 8 on both sides with inclined distribution and cylinder bodies respectively fixed on the left support seat 6 and the right support seat 7, and clamping wheels 10 on both sides fixed on the piston rods of the hydraulic cylinders 8 on both sides with adjustable inclination angles; the clamping wheels 10 on both sides are respectively located on both sides above the bottom support wheel 12; when in a closed state, the workpiece is placed on the bottom support wheel 12, and the upper guide and clamping wheels 3 are pressed against the gap just above the workpiece, and the clamping wheels 10 on both sides symmetrically tilt and clamp the workpiece on both sides of the workpiece in a closed manner at an inclination angle of 0-40° with the horizontal clamping degree. Preferably, the specific structure of the side clamping wheel 10 being fixed on the piston rod of the side hydraulic cylinder 8 with an adjustable tilt angle is as follows: the upper end of the connecting member 9 is fixed to the piston rod of the side hydraulic cylinder 8 through a first pin shaft 15, and the lower end thereof is rotatably fixed to the connecting block protruding from the rear end of the side base 17 of the side clamping wheel through a second pin shaft 16; the connecting rod is composed of an intermediate long nut 11 and two adjustable bolts 18 threadedly connected to the two ends of the intermediate long nut 11, the upper adjustable bolt 18 is fixed to the upper end of the connecting member 9, and the lower adjustable bolt 18 is fixed to the upper end of the side base 17 of the side clamping wheel; a linear guide is fixed to the inclined surface of the upper end of the left support seat 6 or the right support seat 7, and the bottom surface of the connecting member 9 is slidably fixed to the linear guide. In this way, when the piston rod of the side hydraulic cylinder 8 drives the connecting member 9 to move up and down, the connecting member 9 can move up and down along the linear guide with high precision. The side clamping wheel 10 is not only determined by the inclined surface of the left support seat 6 or the right support seat 7, but also can be adjusted by the connecting rod. The inclination angle can be adjusted within the inclination range of 0-40° with the horizontal clamping angle. The smaller the diameter of the workpiece steel pipe column, the smaller the angle of the side clamping wheel 10 with the horizontal clamping angle. Preferably, the side clamping wheel 10 includes a side base 17 and a plurality of side support wheels hinged in the lower end groove of the side base 17. The side support wheels are composed of two integrally formed conical columns with a small middle diameter and large diameters at both ends. In this way, the workpiece steel pipe column has the function of clamping and limiting.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seam-joining mechanism for a contact network steel pipe column seam-joining welding machine, characterized in that: It comprises a base (14), an upper clamping device, a bottom support wheel (12) and clamping devices on both sides; the bottom support wheel (12) is fixed to the middle part of the front end of the base (14) through a bracket; The upper clamping device comprises a support frame (1) fixed to the rear end of the base (14), a vertical hydraulic cylinder (2) whose cylinder body is fixed to the upper end of the support frame (1), and an upper guide and clamping wheel (3) fixed to the piston rod of the vertical hydraulic cylinder (2); the upper guide and clamping wheel (3) is located directly above the bottom support wheel (12); The two-side clamping device comprises a left support seat (6) and a right support seat (7) symmetrically fixed on a base (14) and having an inclined upper end surface, two side hydraulic cylinders (8) whose cylinder bodies are respectively fixed on the left support seat (6) and the right support seat (7) and are arranged obliquely, and two side clamping wheels (10) respectively fixed on the piston rods of the two side hydraulic cylinders (8) with adjustable inclination angles; the two side clamping wheels (10) are respectively located on the two sides above the bottom support wheel (12); when in a joint state, the workpiece is placed on the bottom support wheel (12), the upper guide and clamping wheels (3) are pressed against the gap just above the workpiece, and the two side clamping wheels (10) symmetrically tilt and clamp the workpiece on the two sides of the workpiece in a joint manner at an inclination angle of 0-40° with respect to the horizontal.

2. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 1 is characterized in that: The specific structure of the side pressure wheel (10) being fixed on the piston rod of the side hydraulic cylinder (8) with an adjustable tilt angle is as follows: the upper end of the connecting member (9) is fixed to the piston rod of the side hydraulic cylinder (8) through a first pin shaft (15), and the lower end thereof is rotatably fixed to a connecting block protruding from the rear end of the side base (17) of the side pressure wheel through a second pin shaft (16); the connecting rod is composed of a middle long nut (11) and two adjustable bolts (18) threadedly connected to the two ends of the middle long nut (11), the upper adjustable bolt (18) is fixed to the upper end of the connecting member (9), and the lower adjustable bolt (18) is fixed to the upper end of the side base (17) of the side pressure wheel; a linear guide is fixed to the inclined surface of the upper end of the left support seat (6) or the right support seat (7), and the bottom surface of the connecting member (9) is slidably fixed to the linear guide.

3. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 1 or 2, characterized in that: The specific structure of the upper guide and pressure wheel (3) being fixed on the piston rod of the vertical hydraulic cylinder (2) is as follows: the piston rod of the vertical hydraulic cylinder (2) is fixed to the middle of the upper end of the gear rod (5) through a connecting shaft (13); the middle of the lower end of the gear rod (5) is fixed to the upper end of the base of the upper guide and pressure wheel (3); vertical racks are fixed to the vertical support frames symmetrical at both ends of the support frame (1); and the gears at both ends of the gear rod (5) are respectively meshed with the two vertical racks.

4. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 3 is characterized in that: The upper guide and pressure wheel (3) comprises an upper base (33), a plurality of cylindrical pressure wheels (31) at the front end, and a thin-sheet guide wheel (32) at the rear end that can be inserted into the gap of the workpiece steel pipe column; the pressure wheel (31) and the guide wheel (32) are hinged in a groove at the lower end of the upper base (33).

5. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 4 is characterized in that: The bottom support wheel (12) comprises a lower base and a plurality of support wheels hinged in an upper end groove of the lower base, wherein the support wheel is composed of two integrally formed conical columns with a small middle diameter and large diameters at both ends.

6. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 5, characterized in that: The side pressure wheel (10) comprises a side base and a plurality of side support wheels hinged in a groove at the lower end of the side base, wherein the side support wheels are composed of two integrally formed conical columns with a small middle diameter and large diameters at both ends.

7. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 1 or 2, characterized in that: The upper guide and pressure wheel (3) comprises an upper base (33), a plurality of cylindrical pressure wheels (31) at the front end, and a thin-sheet guide wheel (32) at the rear end that can be inserted into the gap of the workpiece steel pipe column; the pressure wheel (31) and the guide wheel (32) are hinged in a groove at the lower end of the upper base (33).

8. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 7, characterized in that: The bottom support wheel (12) comprises a lower base and a plurality of support wheels hinged in an upper end groove of the lower base, wherein the support wheel is composed of two integrally formed conical columns with a small middle diameter and large diameters at both ends.

9. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 8, characterized in that: The side pressure wheel (10) comprises a side base and a plurality of side support wheels hinged in a groove at the lower end of the side base, wherein the side support wheels are composed of two integrally formed conical columns with a small middle diameter and large diameters at both ends.

10. The seam-joining mechanism for the contact network steel pipe column seam-joining welding integrated machine according to claim 1 or 2, characterized in that: The bottom support wheel (12) comprises a lower base and a plurality of support wheels hinged in an upper end groove of the lower base, the support wheels being composed of two integrally formed conical columns having a small middle diameter and large diameters at both ends; the side pressure wheel (10) comprises a side base and a plurality of side support wheels hinged in a lower end groove of the side base, the side support wheels being composed of two integrally formed conical columns having a small middle diameter and large diameters at both ends.

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