Nut fixing mechanism and auxiliary tool for disassembling and assembling conducting rod on sleeve

Abstract

The invention discloses a nut fixing mechanism and an auxiliary tool for disassembling and assembling a conducting rod on a sleeve, and relates to the technical field of transformer maintenance, the nut fixing mechanism comprises a locking assembly, the locking assembly comprises a nut clamp, and the nut clamp is provided with an open type locking groove which can be embedded with the local contour of the outer surface of a fastening nut on the conducting rod; and the mounting assembly comprises a delivery rod, and one end of the delivery rod is detachably connected with the nut clamp. Through mutual cooperation of the locking assembly, the mounting assembly and the positioning assembly, during use, a nut is clamped into a sleeve mounting hole, and the fastening nut is fixed and prevented from falling, so that the risk that the nut is likely to fall into the bottom of the sleeve due to the fact that the nut cannot be fixed when the transformer sleeve is disassembled and assembled is effectively avoided; meanwhile, the dismounting efficiency and the mounting performance are improved, the equipment safety is guaranteed, the working efficiency is improved, and the power utilization quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer maintenance, and in particular to a nut fixing mechanism and an auxiliary tool for disassembling and assembling a conductive rod on a bushing. Background Art

[0002] The bushing is a device that leads the internal lead wire of the transformer to the outside of the oil tank. A conductive rod is installed inside it. The removal and maintenance of the conductive rod is related to the stable operation of the transformer. When removing the conductive rod, the fastening nut below will rotate, and you need to put your hand or tool into the installation hole to clamp the fastening nut and remove it. Because the installation hole is too small and there are no special fixing tools, disassembly is time-consuming and laborious. There is also the risk of the nut accidentally falling to the bottom. Once this happens, the bell must be lifted to remove it, resulting in a large waste of manpower and material resources. At the same time, it will increase the risk level of the operation and prolong the power outage time. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problem that the mounting hole on the existing bushing is too small, which makes it difficult to remove the conductive rod on the bushing, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a nut fixing mechanism, comprising: a locking assembly, which includes a nut clamp, and the nut clamp has an open locking groove that can be engaged with the local contour of the outer surface of the fastening nut on the conductive rod; and an installation assembly, which includes a delivery rod, one end of which is detachably connected to the nut clamp. When the conductive rod on the sleeve is disassembled, one end of the delivery rod assembled with the nut clamp extends into the sleeve, and the locking groove of the nut clamp is engaged with the fastening nut on the conductive rod.

[0006] As a preferred solution of the nut fixing mechanism of the present invention, a fixing block is provided at one end of the delivery rod, and the nut clamp also has two contact surfaces that can respectively fit with two opposite surfaces of the fixing block, and a clamping gap for accommodating the fixing block is formed between the two contact surfaces.

[0007] As a preferred solution of the nut fixing mechanism of the present invention, the locking groove and the engagement gap have opening directions opposite to each other.

[0008] As a preferred solution of the nut fixing mechanism described in the present invention, wherein: the installation assembly also includes a locking pin for connecting the fixing block and the nut clamp; the fixing block is provided with a first circular hole passing through two opposite surfaces; the nut clamp is provided with a second circular hole passing through two contacting surfaces, and the aperture of the second circular hole is the same as that of the first circular hole; when the fixing block is embedded in the engaging gap, the first circular hole intersects with the second circular hole, and the locking pin passes through the first circular hole and the second circular hole.

[0009] As a preferred solution of the nut fixing mechanism of the present invention, one end of the delivery rod is provided with an external thread, and the fixing block is provided with an internal thread groove adapted to the external thread at the end of the delivery rod.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions: a conductive rod disassembly and assembly auxiliary tool on the sleeve, comprising the nut fixing mechanism; and a positioning assembly, which comprises a positioning plate, and the positioning plate is detachably connected to the delivery rod; wherein, the positioning plate comprises two positioning parts, and a bent part connected between the two positioning parts, the two positioning parts and the bent part enclose an open positioning groove, and when the conductive rod on the sleeve is disassembled and assembled, the positioning plate is semi-enclosed and sleeved on the outside of the conductive rod.

[0011] As a preferred solution of the auxiliary tool for disassembling and assembling the conductive rod on the sleeve of the present invention, the opening directions of the positioning groove and the locking groove are opposite.

[0012] As a preferred solution of the auxiliary tool for disassembling and assembling the conductive rod on the sleeve described in the present invention, the positioning assembly also includes a height adjustment screw, and a threaded hole that is compatible with and passes through the height adjustment screw is provided on any positioning portion of the positioning plate. The height adjustment screw passes through the threaded hole on the positioning plate and is arranged parallel to the delivery rod. When the conductive rod on the sleeve is disassembled and assembled, one end of the height adjustment screw conflicts with the plane where the mounting hole on the sleeve is located.

[0013] As a preferred solution of the auxiliary tool for disassembling and assembling the conductive rod on the sleeve of the present invention, the positioning assembly further includes a hand-held rod, and the hand-held rod is detachably connected to the positioning plate.

[0014] As a preferred solution of the auxiliary tool for disassembling and assembling the conductive rod on the bushing of the present invention, the two positioning parts of the positioning plate are symmetrical in structure and arranged in parallel.

[0015] The beneficial effects of the present invention are as follows: through the mutual cooperation among the locking assembly, the mounting assembly and the positioning assembly, when in use, the nut clamp is sent into the bushing mounting hole, and the fastening nut is fixed and prevented from falling, thereby effectively avoiding the risk of the nut falling into the bottom of the bushing due to the inability to fix the nut when disassembling and assembling the transformer bushing; at the same time, the removal efficiency and installation performance are improved, the equipment safety is ensured, the operation efficiency is improved, and the power quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the positioning component in the present invention.

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 4 It is a cross-sectional view of the locking assembly and the fixing block in the present invention.

[0021] Figure 5 This is a schematic diagram of operation step 1 of the disassembly and assembly auxiliary tool of the present invention.

[0022] Figure 6 This is a schematic diagram of operation step 2 of the disassembly and assembly auxiliary tool of the present invention.

[0023] Figure 7 This is a schematic diagram of operation step 3 of the disassembly and assembly auxiliary tool of the present invention.

[0024] Figure 8 It is a schematic diagram of operation step 4 of the disassembly and assembly auxiliary tool of the present invention.

[0025] Fig. 9 This is a schematic diagram of operation step 5 of the disassembly and assembly auxiliary tool of the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Example 1

[0031] Reference Figure 1 , Figure 2 and Figures 5 to 9 , shows a first embodiment of a conductive rod disassembly and assembly auxiliary tool based on a bushing for transformer maintenance of the present invention, the conductive rod disassembly and assembly auxiliary tool on the bushing comprises a locking assembly 100, an installation assembly 200 and a positioning assembly 300. Among them, the locking assembly 100 is used to fix the fastening nut on the conductive rod, and cooperates with the installation assembly 200 and the positioning assembly 300 to assist in the disassembly and assembly of the fastening nut and the conductive rod.

[0032] Specifically, Figure 1 As shown, the locking assembly 100 includes a nut clamp 101, and a locking groove 102 is provided on the nut clamp 101. The locking groove 102 is an open locking groove 102 that can be engaged with a local contour of the outer surface of the fastening nut on the conductive rod.

[0033] like Figure 2 As shown, the positioning assembly 300 includes a positioning plate 301, and the positioning plate 301 has two positioning parts 302, 303, and a bent part 304 connected between the two positioning parts 302, 303. The two positioning parts 302, 303 of the positioning plate 301 are symmetrical and arranged in parallel. The two positioning parts 302, 303 and the bent part 304 enclose an open positioning groove 305. When the conductive rod on the sleeve is disassembled, the positioning plate 301 is sleeved on the outside of the conductive rod in a semi-enclosed form.

[0034] like Figure 1As shown, the installation assembly 200 includes a delivery rod 201, both ends of which are provided with external threads, and the positioning parts 302, 303 of the positioning plate 301 and the nut clamp 101 are provided with internal thread grooves that match the external threads at the end of the delivery rod 201. The external threads at the end of the delivery rod 201 are connected by thread matching with the positioning plate 301 and the internal thread grooves on the nut clamp 101. When the conductive rod on the sleeve is disassembled, one end of the delivery rod 201 assembled with the nut clamp 101 extends into the sleeve, and the locking groove 102 of the nut clamp 101 is engaged with the fastening nut on the conductive rod.

[0035] As a further improvement, Figure 1 As shown, when the delivery rod 201 is connected with the positioning plate 301 and the nut clamp 101, the opening direction of the positioning groove 305 on the positioning plate 301 is opposite to that of the locking groove 102 on the nut clamp 101. With such a configuration, when the conductive rod on the sleeve is disassembled, the locking groove 102 on the nut clamp 101 is engaged with the fastening nut, generating a force in a first direction F1 on the fastening nut, and the positioning plate 301 is sleeved on the outside of the conductive rod in a semi-enclosed form, generating a force in a second direction F2 on the conductive rod, and the first direction F1 is exactly opposite to the second direction F2, and thus when the conductive rod is twisted, the conductive rod can be kept vertically balanced, ensuring that the fastening nut does not move during disassembly, so that the fastening nut can be assembled on or removed from the conductive rod more quickly.

[0036] As a further improvement, Figure 1 As shown, the positioning assembly 300 also includes a height adjustment screw 306. A threaded hole that is compatible with and passes through the height adjustment screw 306 is provided on any positioning portion 302, 303 of the positioning plate 301. The height adjustment screw 306 passes through the threaded hole on the positioning plate 301 and is arranged parallel to the delivery rod 201. When the conductive rod on the sleeve is disassembled, one end of the height adjustment screw 306 conflicts with the plane where the mounting hole on the sleeve is located.

[0037] In summary, refer to Figures 5 to 9 , showing the specific operation process of removing the conductive rod on the bushing based on the conductive rod disassembly and assembly auxiliary tool on the bushing for transformer maintenance of the present invention. Figure 5 As shown, the positioning plate 301 is connected to the delivery rod 201, and the positioning plate 301 is set on the outside of the conductive rod in a semi-enclosed form, and the whole is in an inclined state. Figure 6 As shown, install the thread clamp, ensure that the positioning groove 305 on the positioning plate 301 and the locking groove 102 on the nut clamp 101 are in opposite directions, and rotate the disassembly and assembly auxiliary tool to make the tool as a whole in a vertical state to ensure that the tool can pass through the installation hole. Figure 7 As shown, the operating tool moves downward, and the nut clamp 101 passes through the mounting hole and extends into the interior of the sleeve. Figure 8As shown, the operating tool is tilted to avoid obstacles in the sleeve and the nut clamp 101 is placed under the tightening nut. Figure 8 As shown, the operating tool is rotated to make the locking groove 102 on the nut clamp 101 fit into the local contour of the outer surface of the fastening nut on the conductive rod. Fig. 9 As shown, the height adjustment screw 306 is turned, and one end of the height adjustment screw 306 contacts the plane where the mounting hole on the sleeve is located. By turning the height adjustment screw 306, the tool can be fixed in an up and down clamping manner. Finally, the conductive rod is turned to separate the conductive rod from the locking nut, and then the removal auxiliary tool with the locking nut is taken out from the mounting hole, and the locking nut is removed to complete the removal work.

[0038] Example 2

[0039] Reference Figure 2 to Figure 4 , shows a second embodiment of the present invention, a conductive rod disassembly and assembly auxiliary tool based on a bushing for transformer maintenance, such as Figure 3 As shown, a fixing block 202 is provided at one end of the delivery rod 201, and the nut clamp 101 has two contact surfaces 103, 104 that can respectively fit with two opposite surfaces 203, 204 of the fixing block 202, and a clamping gap 105 for accommodating the fixing block 202 is formed between the two contact surfaces 103, 104.

[0040] Specifically, Figure 3 As shown, the fixing block 202 is provided with an internal thread groove adapted to the external thread at the end of the delivery rod 201 , and the external thread at the end of the delivery rod 201 is connected by matching with the thread of the internal thread groove on the fixing block 202 .

[0041] As a further improvement, Figure 3 As shown, the mounting assembly 200 further includes a locking pin 206 for connecting the fixing block 202 and the nut clamp 101 .

[0042] Specifically, Figure 4 As shown, the fixing block 202 is provided with a first circular hole 205 penetrating through the two opposing surfaces 203, 204; the nut clamp 101 is provided with second circular holes 106, 107 penetrating through the two abutting surfaces 103, 104, and the second circular holes 106, 107 have the same aperture as the first circular hole 205. When the fixing block 202 is inserted into the engagement gap 105, the first circular hole 205 intersects with the second circular holes 106, 107, and the locking pin 206 passes through the first circular hole 205 and the second circular holes 106, 107.

[0043] As a further improvement, Figure 4 As shown, the locking groove 102 and the engagement gap 105 have opening directions opposite to each other.

[0044] In summary, by adding a fixing block 202 to the end of the delivery rod 201, and setting a snap gap 105 on the nut clamp 101 that can snap with the fixing block 202; and setting the opening direction of the locking groove 102 and the snap gap 105 opposite, after the nut clamp 101 and the fixing block 202 are assembled, it can be ensured that the opening direction of the positioning groove 305 on the positioning plate 301 and the locking groove 102 on the nut clamp 101 are opposite, and no readjustment is required, thereby improving the assembly efficiency of the tool parts. At the same time, the locking pin 206 is used to connect the nut clamp 101 and the fixing block 202, further improving the assembly efficiency of the tool parts.

[0045] The remaining structures are the same as those of Example 1.

[0046] Example 3

[0047] Reference Figure 2 , shows a third embodiment of the present invention, a conductive rod disassembly and assembly auxiliary tool based on a bushing for transformer maintenance, such as Figure 1 As shown, the positioning assembly 300 further includes a hand-held rod 307, and the hand-held rod 307 is detachably connected to the positioning plate 301. By providing a hand-held piece, the usability of the tool is improved.

[0048] The remaining structure is the same as that of Example 2.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A nut fixing mechanism, characterized in that: include, A locking assembly (100) comprising a nut clamp (101), wherein the nut clamp (101) has an open locking groove (102) capable of engaging with a local contour of an outer surface of a fastening nut on a conductive rod; and The mounting assembly (200) comprises a delivery rod (201), one end of which is detachably connected to a nut clamp (101). When the conductive rod on the sleeve is disassembled, one end of the delivery rod (201) assembled with the nut clamp (101) extends into the sleeve, and the locking groove (102) of the nut clamp (101) is engaged with the fastening nut on the conductive rod.

2. The nut fixing mechanism according to claim 1, characterized in that: A fixing block (202) is provided at one end of the delivery rod (201), and the nut clamp (101) also has two contact surfaces (103, 104) that can respectively fit with two opposite surfaces (203, 204) of the fixing block (202), and a locking gap (105) for accommodating the fixing block (202) is formed between the two contact surfaces (103, 104).

3. The nut fixing mechanism according to claim 2, characterized in that: The locking groove (102) and the engaging gap (105) have opening directions opposite to each other.

4. The nut fixing mechanism according to claim 3, characterized in that: The mounting assembly (200) further comprises a locking pin (206) for connecting the fixing block (202) and the nut clamp (101); The fixing block (202) is provided with a first circular hole (205) penetrating through two opposite surfaces (203, 204); The nut clamp (101) is provided with a second circular hole (106, 107) penetrating the two contact surfaces (103, 104), and the second circular hole (106, 107) has the same diameter as the first circular hole (205); When the fixing block (202) is embedded in the engagement gap (105), the first circular hole (205) intersects with the second circular hole (106, 107), and the locking pin (206) passes through the first circular hole (205) and the second circular hole (106, 107).

5. The nut fixing mechanism according to claim 2, characterized in that: One end of the delivery rod (201) is provided with an external thread, and the fixing block (202) is provided with an internal thread groove adapted to the external thread at the end of the delivery rod (201).

6. An auxiliary tool for disassembling and assembling a conductive rod on a casing, characterized in that: comprising the nut fixing mechanism as claimed in any one of claims 1 to 5; and A positioning assembly (300), comprising a positioning plate (301), wherein the positioning plate (301) is detachably connected to the delivery rod (201); The positioning plate (301) comprises two positioning parts (302, 303) and a bent part (304) connected between the two positioning parts (302, 303); the two positioning parts (302, 303) and the bent part (304) enclose an open positioning groove (305); when the conductive rod on the sleeve is disassembled, the positioning plate (301) is sleeved on the outside of the conductive rod in a semi-enclosed form.

7. The conductive rod disassembly and assembly auxiliary tool on the casing according to claim 6, characterized in that: The opening directions of the positioning groove (305) and the locking groove (102) are opposite.

8. The conductive rod disassembly and assembly auxiliary tool on the bushing according to claim 6 or 7, characterized in that: The positioning assembly (300) further comprises a height adjustment screw (306), and a threaded hole which matches and passes through the height adjustment screw (306) is provided on any positioning portion (302, 303) of the positioning plate (301). The height adjustment screw (306) passes through the threaded hole on the positioning plate (301) and is arranged parallel to the delivery rod (201). When the conductive rod on the sleeve is disassembled, one end of the height adjustment screw (306) contacts the plane where the mounting hole on the sleeve is located.

9. The conductive rod disassembly and assembly auxiliary tool on the casing according to claim 8, characterized in that: The positioning assembly (300) further comprises a hand-held rod (307), and the hand-held rod (307) is detachably connected to the positioning plate (301).

10. The conductive rod disassembly and assembly auxiliary tool on the bushing according to claim 6, 7 or 9, characterized in that: The two positioning parts (302, 303) of the positioning plate (301) are symmetrical in structure and arranged in parallel.

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