A positioning and clamping device

Abstract

A positioning and clamping device includes at least one positioning clamp. Each positioning clamp includes a support plate having an opening slot. On both sides of the opening slot, at least a pair of oppositely arranged positioning and adjusting mechanisms are provided. One end of each pair of positioning and adjusting mechanisms serves as a clamping end for clamping the box wall extending into the opening slot. The positioning and adjusting mechanism includes a first positioning magnet and an adjusting rod. The first positioning magnet is arranged on the support plate for fixing the positioning clamp on the box wall. The adjusting rod is adjustably arranged on the support plate for correcting and adjusting the inclination angle of the box wall. In the process of erecting the vertical wall of the transformer oil tank, the present invention positions and clamps two box walls to be assembled, eliminating the need for spot welding, ensuring the assembly accuracy at the joint of the two box walls, and not requiring heavy physical labor from workers, which is conducive to fixing and removal.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing transformer oil tanks, and particularly to a positioning and clamping device. Background Art

[0002] During the manufacturing process of transformer oil tanks, especially for large power transformer oil tanks, after the welding of the tank wall and the reinforcing iron is completed, there will inevitably be a wavy welding deformation of 5 - 10 mm at the edge of the tank wall. In addition, when the tank wall is cut by thermal cutting, the straightness deviation at its edge will cause the actual assembly gap at the right-angle joint of the two tank walls in the height direction of the oil tank to reach 7 - 12 mm during the process of erecting the tank wall. Generally, the assembly gap required for good welding quality is 0 - 2 mm. To ensure the welding quality, currently, it is usually adopted to spot-weld temporary fixing plates on the tank wall and hammer wedge blocks to adjust the assembly gap to meet the process requirements. However, the above process measures have the following problems: First, the spot-welding and removal of the fixing plates will damage the surface of the tank wall; second, hammering the wedge blocks is heavy physical labor, with a large working intensity and a serious noise exceeding the standard, which is harmful to the health of workers; third, the production efficiency is low when spot-welding the fixing plates, hammering the wedge blocks, and then removing the fixing plates. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a positioning and clamping device with a simple structure, easy to install and move, and capable of achieving the welding accuracy of the oil tank body.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A positioning and clamping device includes at least one positioning clamp. Each positioning clamp includes a support plate with an opening slot. On both sides of the opening slot, at least a pair of oppositely arranged positioning adjustment mechanisms are provided. One end of each pair of positioning adjustment mechanisms serves as a clamping end for clamping the tank wall extending into the opening slot. The positioning adjustment mechanism includes a first positioning magnet and an adjustment rod. The first positioning magnet is arranged on the support plate for fixing the positioning clamp on the tank wall, and the adjustment rod is adjustably arranged on the support plate for correcting and adjusting the inclination angle of the tank wall.

[0006] Further, the plane where the end face of the clamping end of each pair of positioning adjustment mechanisms is located is perpendicular in the opening slot.

[0007] Further, the support plate is integrally bent to form an annular structure. A break is provided on the annular structure, and the break communicates with the hollow area of the annular structure to form an opening slot. The planes where the two cross-sections of the break are located are vertically intersecting in the opening slot.

[0008] Furthermore, first positioning magnets are fixedly arranged on two cross-sections of the fracture. The adjusting rod is arranged parallel to one side of the first positioning magnets, and the adjusting rod is in threaded connection with the support plate.

[0009] Furthermore, the support plate includes a bottom plate. A convex edge protrudes from one side of the bottom plate. The first positioning magnets are arranged on two end faces of the convex edge. The end faces of the first positioning magnets are flush with the cross-sections of the fracture. A screw hole for the adjusting rod to pass through is arranged in the middle of the convex edge.

[0010] Furthermore, a hard rubber cushion block is arranged at one end of the adjusting rod extending into the opening groove, and one end face of the hard rubber cushion block serves as the end face of the clamping end.

[0011] Furthermore, at least one auxiliary cooperation component cooperating with the positioning clamp is further included. The positioning clamp and the auxiliary cooperation component cooperate from two sides of the box wall respectively to perform correction adjustment on the box wall.

[0012] Furthermore, the auxiliary cooperation component includes a positive and negative lead screw, and second positioning magnets are respectively arranged at two ends of the positive and negative lead screw.

[0013] Furthermore, a moving bracket is further included. The moving bracket includes a support bottom plate and a support vertical plate fixedly arranged on the support bottom plate. A plurality of positioning clamps are spaced on the support vertical plate.

[0014] Furthermore, an adjusting slide rail is arranged on one side of the support vertical plate. A plurality of positioning clamps are adjusted to adjust the interval between two adjacent positioning clamps through sliding cooperation with the adjusting slide rail; rollers for moving the moving bracket are assembled on the support bottom plate.

[0015] For a positioning and clamping device of the present invention, during the process of erecting the vertical wall of the transformer oil tank, two box walls to be assembled are positioned and clamped by the positioning clamps. The first positioning magnets cooperate with the adjusting rod to position and clamp the two box walls of the oil tank, eliminating the need for spot welding of temporary fixing plates, which is beneficial for fixing and removal. In addition, by adjusting the length of the adjusting rod extending into the opening groove, the assembly accuracy at the joint of the two box walls can be guaranteed, and heavy physical labor of workers is not required, reducing the working intensity.

[0016] In addition, the planes where the end faces of the clamping ends of each pair of positioning and adjusting mechanisms are located are vertically intersected in the opening groove. By adjusting the adjusting rod, each pair of positioning and adjusting mechanisms can adjust the right-angle joint of the two box walls to be assembled to meet the process requirements.

[0017] In addition, by arranging a hard rubber cushion block at the end of the adjusting rod extending into the opening groove, while clamping the box wall, the surface of the box wall is prevented from being damaged.

[0018] In addition, by setting up auxiliary cooperation components, the positioning clamp and the auxiliary cooperation components are respectively arranged on the inner and outer sides of two box walls to be assembled, which is applicable to fuel tanks with relatively thick box walls and also applicable to box walls with local deformation. In addition, the auxiliary cooperation components and the positioning clamp can be freely combined according to actual applications, and various clamping schemes can be evolved. Compared with the traditional scheme of only adjusting from the inner or outer side, the applicability is stronger.

[0019] In addition, multiple positioning clamps can be used simultaneously, which can avoid the problems of inconvenient use and deviation in adjustment effect caused by moving a single positioning clamp multiple times. By adjusting multiple positioning clamps simultaneously, the adjustment quality is high and the operation is convenient, which is more conducive to the gap between box walls reaching a reasonable range.

[0020] In addition, multiple positioning clamps are arranged at intervals through a moving bracket. The moving bracket can move multiple positioning clamps as a whole, improving the portability. Especially by setting rollers on the moving bracket, the mobility of the moving bracket is improved. The positioning clamp is slidably matched with the adjustment slide rail of the moving bracket, which is conducive to adjusting the interval between two adjacent positioning clamps and is applicable to fuel tanks with a relatively large height. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a positioning clamp in a positioning and clamping device of the present invention;

[0022] Figure 2 is a schematic structural diagram of a first embodiment in a positioning and clamping device of the present invention;

[0023] Figure 3 is a schematic structural diagram of a second embodiment in a positioning and clamping device of the present invention;

[0024] Figure 4 is a schematic structural diagram of a third embodiment in a positioning and clamping device of the present invention;

[0025] Figure 5 is a schematic structural diagram (side view) of a third embodiment in a positioning and clamping device of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following Figures 1 to 5 given embodiments further illustrate the specific implementation manners of a positioning and clamping device of the present invention. The positioning and clamping device of the present invention is not limited to the descriptions of the following embodiments.

[0027] A positioning and clamping device includes at least one positioning clip 1. Each positioning clip 1 includes a support plate 11 having an opening slot 111. At least a pair of oppositely arranged positioning and adjusting mechanisms are provided on both sides of the opening slot 111. One end of each pair of positioning and adjusting mechanisms serves as a clamping end for clamping the tank wall a extending into the opening slot 111. The positioning and adjusting mechanism includes a first positioning magnet 12 and an adjusting rod 13. The first positioning magnet 12 is arranged on the support plate 11 for fixing the positioning clip 1 on the tank wall a. The adjusting rod 13 is adjustably arranged on the support plate 11 for correcting and adjusting the inclination angle of the tank wall a.

[0028] In the positioning and clamping device of the present invention, during the process of erecting the transformer oil tank wall, the two tank walls a to be assembled are positioned and clamped by the positioning clip 1. Among them, the first positioning magnet 12 and the adjusting rod 13 cooperate with the positioning clip 1 to clamp the two tank walls a of the oil tank, eliminating the need for spot welding, which is conducive to fixing and removal. In addition, by adjusting the length of the adjusting rod 13 extending into the opening slot 111, the assembly accuracy at the joint of the two tank walls a can be ensured, and it does not require heavy physical labor from workers, reducing the work intensity.

[0029] Combined Figure 1 and 2 A first embodiment is provided. The positioning clip 1 clamping device includes a positioning clip 1. The positioning clip 1 includes a support plate 11 having an opening slot 111. A pair of oppositely arranged positioning and adjusting mechanisms are provided on both sides of the opening slot 111. One end of the positioning and adjusting mechanism serves as a clamping end. When the two tank walls a to be assembled extend into the opening slot 111, the two clamping ends cooperate with each other to clamp the two tank walls a, enabling the two tank walls a to be vertically butted or butted at a certain angle. Each positioning and adjusting mechanism includes a first positioning magnet 12 fixedly arranged on the support plate 11 and an adjusting rod 13 penetrating through the support plate 11. Preferably, the magnetism of the first positioning magnet 12 can be controlled to be turned on or off. The first positioning magnet 12 can be an electromagnet, which can immediately generate magnetism and attract the tank wall a when needed, and can immediately eliminate magnetism and release the attraction with the tank wall a when not needed. Among them, one end of the first positioning magnet 12 for attracting the tank wall a and one end of the adjusting rod 13 extending into the opening slot 111 together serve as the clamping end. Preferably, the adjusting rod 13 is threadedly connected to the support plate 11. By adjusting the adjusting rod 13, the end face of the adjusting rod 13 serving as the clamping end for pushing and clamping the tank wall a can move straight back and forth, enabling the end face of the adjusting rod 13 serving as the clamping end to be in the same plane as the end face of the first positioning magnet 12 on the same side serving as the clamping end, or to be reset and moved to different planes.

[0030] Such as Figure 1 and 2As shown, the first positioning magnet 12 is attracted to the outer side of the box wall a by magnetic force to achieve positioning. The first positioning magnet 12 is positioned by magnetic force. At this time, the two box walls a to be assembled are butted together and do not need to be welded and fixed. Then, by finely adjusting the adjusting rod 13, a pair of adjusting rods 13 clamp the two box walls a to be assembled through mutual cooperation, making the installation and disassembly of the entire device more convenient and not requiring high-intensity labor.

[0031] Furthermore, a pair of positioning and adjusting mechanisms arranged on both sides of the opening groove 111 are used to position and clamp the right-angle joint of the two box walls a. At this time, the planes where the end faces of the two clamping ends of the pair of positioning and adjusting mechanisms intersect vertically in the opening groove 111. During the process of standing the fuel tank wall, the local gap at the right-angle joint of the two box walls a reaches 12 mm. A positioning clamp 1 is set at the position with the largest gap (the middle position of the fuel tank height). When the two box walls a extend into the opening groove 111, the outer sides of the two box walls a are respectively attached to the end faces of the clamping ends of the two positioning and adjusting mechanisms (that is, the first positioning magnet 12 is opened and attracted to the box wall a). By operating the adjusting rod 13 and continuously adjusting the position of the box wall a, the gap is gradually reduced to 3 mm. Continue to adjust the adjusting rod 13 until it can no longer be operated, and then replace the adjusting rod 13 with a different diameter and continue to adjust until the gap is adjusted to 1.5 mm. At this time, the two mutually perpendicular box walls a are clamped. In addition, during actual use, when the adjustment effect is already clear, the adjusting screw rod 13 with a larger diameter can be directly used for adjustment. This adjustment method is simpler and more controllable than hammering the wedge block and can meet its assembly accuracy. Of course, the planes where the end faces of the clamping ends of the positioning and adjusting mechanism intersect in the opening groove 111 can also intersect at other angles, such as 85°, 95°, etc. In this way, it can be applied to the non-vertical joints of the two box walls a.

[0032] Specifically, a structure of the positioning clamp 1 is provided. The support plate 11 in the positioning clamp 1 is integrally bent to form an annular structure. The annular structure can be in the shape of a rectangle, a circle, an ellipse, etc. An opening 113 is provided on the annular structure. The opening 113 communicates with the hollow area of the annular structure to form an opening groove 111. The planes where the two cross-sections 114 of the opening 113 are located intersect vertically in the opening groove 111.

[0033] In this embodiment, the support plate 11 is bent to form a rectangular annular structure as an example, as Figure 1 and 2As shown, the support plate 11 includes a bottom plate 112. The bottom plate 112 is integrally bent from a strip-shaped plate to form a rectangular ring structure. One right angle in the rectangular ring structure formed by the bottom plate 112 is cut off to form a break 113. At this time, the two cross-sections 114 of the break 113 are located on the two right-angle sides of the original right angle. A pair of first positioning magnets 12 are fixedly arranged on the two cross-sections 114 of the break 113. At this time, the end faces of one ends of the two first positioning magnets 12 are perpendicular to each other, that is, the planes where the end faces of the non-fixed ends of the two first positioning magnets 12 are located are perpendicular to each other within the opening groove 111.

[0034] Further, a convex edge 115 protrudes from one side of the bottom plate 112. Figure 1 The bending direction of the convex edge 115 is the same as that of the bottom plate 112. The convex edge 115 protrudes from the middle area of the side wall on one side of the bottom plate 112. Grooves are formed between the two end faces of the convex edge 115 and the two cross-sections 114 of the break 113. First positioning magnets 12 are respectively arranged on the two end faces of the convex edge 115. At this time, the end faces of the first positioning magnets 12 are flush with the cross-sections 114 of the break 113, enhancing the connection stability between the first positioning magnets 12 and the support plate 11. A screw hole for the adjusting rod 13 to pass through is provided on the convex edge 115. The adjusting rod 13 is preferably a screw rod threadedly connected in the screw hole. In the figure, the adjusting rod 13 is arranged parallel to one side of the first positioning magnets 12 on the same side. In this way, by adjusting the adjusting rod 13, the end face of the end of the adjusting rod 13 extending into the opening groove 111 and the end face of the first positioning magnet 12 can be located in the same plane for contacting the box wall a. Preferably, a hard rubber cushion block 131 is fixedly arranged at the end extending into the opening groove 111. One end face of the hard rubber cushion block 131 serves as the end face of the clamping end. The adjusting rod 13 drives the hard rubber cushion block 131 to move linearly, and the box wall a is pushed by the hard rubber cushion block 131 to clamp the box wall a, so as to avoid damaging the surface of the box wall a when clamping the box wall a. In addition, this embodiment is not limited to the annular structure on the same plane formed by bending the support plate 11, and can also be a spiral annular structure on different planes. After opening a break 113 on the spiral annular structure on different planes, the support plates 11 on both sides of the break 113 are located on two different planes. When ensuring that the planes where the two cross-sections 114 of the break 113 are located are perpendicular to each other, the two box walls a can also be clamped, but the clamping effect is not as good as when the support plates 11 on both sides of the break 113 are located on the same plane.

[0035] A second embodiment is provided in combination with FIGS. 1 and 3. In this embodiment, the positioning clamp of the positioning clamp device is the same as that in the first embodiment. The difference from the first embodiment is that the positioning clamp device further includes at least one auxiliary cooperation component 2 that cooperates with the positioning clamp. The positioning clamp and the auxiliary cooperation component 2 cooperate and clamp from both sides of the box wall a respectively. The positioning clamp is used to cooperate with the outer side of the box wall a, and the auxiliary cooperation component 2 is used to cooperate with the inner side of the box wall a. The box wall a is clamped through the common cooperation of the positioning clamp and the auxiliary cooperation component 2.

[0036] As Figure 3 shown, the auxiliary cooperation component 2 includes a positive and reverse lead screw 21. The positive and reverse lead screw 21 can perform telescopic movement under adjustment. A second positioning magnet 22 is provided at each end of the positive and reverse lead screw 21. Preferably, a hook 23 for connecting with the positive and reverse lead screw 21 is provided on the second positioning magnet 22. The hook 23 gives a certain range of movement to the connection between the positive and reverse lead screw 21 and the second positioning magnet 22. After the second positioning magnet 22 is attracted to the inner side of the box wall a, by operating the positive and reverse lead screw 21 to perform telescopic movement, the distance between the two box walls a is enlarged or reduced, and then it cooperates with the positioning clamp to make the combination between the two box walls a meet the accuracy requirements. When the box wall a is relatively thick, the effect of this embodiment is better. In addition, when in the process of erecting the wall, if there is a large local deformation due to accidental factors, making it more difficult to clamp, this embodiment can meet the process requirements. In the actual application process, the auxiliary cooperation component and the positioning clamp can be freely combined. For example, multiple auxiliary cooperation components are combined with one positioning clamp, or different specifications of auxiliary cooperation components and positioning clamps are combined according to actual needs. Thus, a variety of clamping schemes can be evolved. Compared with the traditional scheme of only adjusting from the inside or outside, its applicability is stronger.

[0037] Combined with Figure 1 、 4 and 5, a third embodiment is provided. In this embodiment, it includes a plurality of positioning clamps 1 having the same structure as that in the first embodiment and a moving bracket 3 for assembling the positioning clamps 1. The moving bracket 3 can move a plurality of positioning clamps 1 together, improving its portability and operation convenience. In this embodiment, multiple positioning clamps are used simultaneously, which can avoid the problems of inconvenient use and deviation in adjustment effect caused by moving a single positioning clamp multiple times. By adjusting multiple positioning clamps simultaneously, the adjustment quality and operability are improved, and it is more conducive to the gap between the box walls to reach a reasonable range.

[0038] As Figure 4 、 5As shown, the movable support 3 includes a support bottom plate 31 and a support vertical plate 32 fixedly arranged on the support bottom plate 31. The fixation between the support bottom plate 31 and the support vertical plate 32 is preferably welding; a plurality of rollers 311 are assembled at the bottom of the support bottom plate 31, and the rollers 311 are used for the overall movement and positioning of the clamping device 1; a plurality of positioning clamps 1 are arranged at intervals on the support vertical plate 32. Figure 4 , 5 In the [reference], a plurality of support frames are arranged at intervals in the up and down direction of the support vertical plate 32. The opening groove 111 directions of each positioning clamp 1 are unified. Preferably, an adjustment slide rail 321 is arranged on one side of the support vertical plate 32. A plurality of positioning clamps 1 are adjusted by sliding cooperation with the adjustment slide rail 321 to adjust the interval between two adjacent positioning clamps 1. The adjustment slide rail 321 is a chute penetrating through the support vertical plate 32. Threads are arranged in a part of the chute. A connection screw rod 14 threadedly connected with the adjustment slide rail 321 is arranged on the positioning clamp 1. The interval between two adjacent positioning clamps 1 is adjusted by adjusting the connection screw rod 14. Of course, the adjustment slide rail 321 can also only be in sliding cooperation with the positioning clamp 1, and the fixation of the positioning clamp 1 and the support vertical plate 32 is completed by a separately arranged fixing device.

[0039] In this embodiment, as Figure 4 shown, the support vertical plate 32 is an L-shaped plate. The two support vertical plates 32 of the L-shaped plate respectively cooperate with the two right-angle sides of the support plate 11 in each positioning clamp 1, and adjustment slide rails 321 are arranged on both support vertical plates 32, so as to increase the connection stability of the positioning clamp 1 on the support vertical plate 32; preferably, the two right-angle sides of the support vertical plate 32 are smaller than the two right-angle sides of the support plate 11. At this time, the support vertical plate 32 will not block the adjusting rod 13, which is beneficial to operating the adjusting rod 13. Further, a handle facilitating rotational operation is arranged at one end of the adjusting rod 13 away from the tank wall a.

[0040] A cooperation method between the connection screw rod 14 and the adjustment slide rail 321 is provided. Threads are arranged on a part of the rod body of the connection screw rod 14. When it is necessary to adjust the position between two adjacent positioning clamps 1, the area of the connection screw rod 14 without threads is in sliding cooperation with the adjustment slide rail 321. After the adjustment is in place, the threaded area of the connection screw rod 14 is threadedly connected with the adjustment slide rail 321. The connection between the connection screw rod 14 and the positioning clamp 1 can adopt threaded connection, or a round hole for the connection screw rod 14 to pass through is arranged on the positioning clamp 1, as long as it is ensured that the connection screw rod 14 will not drive the positioning clamp 1 to rotate simultaneously when rotating.

[0041] This embodiment has a good effect on the assembly of the relatively high tank wall a. When the thickness of the tank wall a is relatively large, it can be combined with the second embodiment for use.

[0042] It should be noted that after the assembly and welding of the fuel tank wall a are completed in this application, it needs to be removed from the fuel tank.

[0043] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A positioning and clamping device, characterized in that: It includes at least one positioning clip (1). Each positioning clip (1) includes a support plate (11) having an opening slot (111). On both sides of the opening slot (111), at least a pair of oppositely arranged positioning and adjusting mechanisms are provided. One end of each pair of positioning and adjusting mechanisms serves as a clamping end for clamping the box wall (a) extending into the opening slot (111). The positioning and adjusting mechanism includes a first positioning magnet (12) and an adjusting rod (13). The first positioning magnet (12) is arranged on the support plate (11) for fixing the positioning clip (1) on the box wall (a). The adjusting rod (13) is adjustably arranged on the support plate (11) for correcting and adjusting the inclination angle of the box wall (a). It also includes at least one auxiliary cooperation component (2) cooperating with the positioning clip (1). The positioning clip (1) and the auxiliary cooperation component (2) cooperate from both sides of the box wall (a) to correct and adjust the box wall (a). The support plate (11) is integrally bent to form an annular structure. A break (113) is formed in the annular structure. The break (113) communicates with the hollow area of the annular structure to form an opening slot (111). First positioning magnets (12) are fixedly arranged on two cross-sections (114) of the break (113). The adjusting rod (13) is arranged in parallel on one side of the first positioning magnet (12). The auxiliary cooperation component (2) includes a left - right screw rod (21). Second positioning magnets (22) are respectively arranged at both ends of the left - right screw rod (21).

2. The positioning and clamping device according to claim 1, wherein: The plane where the end face of the clamping end of each pair of positioning and adjusting mechanisms is located is perpendicular in the opening slot (111).

3. A positioning and clamping device according to claim 1 or 2, characterized in that: The planes where the two cross - sections (114) of the break (113) are located are vertically intersecting in the opening slot (111).

4. A positioning and clamping device according to claim 3, characterized in that: The adjusting rod (13) is threadedly connected to the support plate (11).

5. A positioning and clamping device according to claim 3, characterized in that: The support plate (11) includes a bottom plate (112). One side of the bottom plate (112) protrudes to form a convex edge (115). First positioning magnets (12) are arranged on two end faces of the convex edge (115). The end face of the first positioning magnet (12) is flush with the cross - section (114) of the break (113). A screw hole for the adjusting rod (13) to pass through is provided in the middle of the convex edge (115).

6. A positioning and clamping device according to claim 1, characterized in that: One end of the adjusting rod (13) extending into the opening slot (111) is provided with a hard rubber cushion block (131). One end face of the hard rubber cushion block (131) serves as the end face of the clamping end.

7. A positioning and clamping device according to claim 1, wherein: It also includes a moving bracket (3). The moving bracket (3) includes a support bottom plate (31) and a support vertical plate (32) fixedly arranged on the support bottom plate (31). A plurality of positioning clips (1) are spaced on the support vertical plate (32).

8. A positioning and clamping device according to claim 7, characterized in that: An adjusting slide rail (321) is provided on one side of the support vertical plate (32). A plurality of positioning clips (1) are adjusted to adjust the interval between adjacent two positioning clips (1) through sliding cooperation with the adjusting slide rail (321). Rollers (311) for moving the moving bracket (3) are assembled on the support bottom plate (31).

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