A ground pile installation tool

Abstract

The application belongs to the technical field of aviation manufacturing, and discloses a grounding pile installation tool.The grounding pile installation tool comprises a constant force assembly, an adapter and a handle portion, the bottom of the constant force assembly is provided with a positioning hole, the positioning hole is used for sleeving on a grounding pile nut, the constant force assembly is configured to provide a set torque when the grounding pile nut is tightened, the adapter is U-shaped and comprises two oppositely arranged connecting arms, the constant force assembly is connected between the two connecting arms, the adapter can rotate relative to the constant force assembly around an axis b, and the adapter is connected to one end of the handle portion, and the handle portion can rotate relative to the adapter around an axis a.The grounding pile installation tool provided by the application can provide two degrees of freedom, the angle can be adjusted during use, the size is relatively small, the tool is suitable for narrow spaces, and a uniform torque can be provided during screwing, the pre-tightening force is uniform, and the consistency of grounding pile installation is improved.

Description

Technical Field

[0001] This invention relates to the field of aerospace manufacturing technology, and in particular to a grounding stake installation tool. Background Technology

[0002] In the aviation field, grounding stakes are used for current grounding protection, shielding, and other functions. According to process specifications, grounding stakes require a set torque after installation. This means that the nuts of the grounding stakes are precisely tightened to the specified torque value using grounding stake installation tools to achieve the set standard preload force, ensuring that each grounding stake is mechanically secure, electrically reliable, and prevents loosening over the long term.

[0003] Traditional grounding stake installation tools typically use torque wrenches. However, with approximately 1300 grounding stakes installed in the machine, and these stakes often installed in confined areas, torque wrenches are relatively large and require considerable space. This makes them inconvenient to use in small spaces, limiting their applicability. Furthermore, the torque wrench's torque setting accuracy is easily affected by human operation; different personnel or repeated operations can lead to torque deviations, making it difficult to ensure consistent pre-tightening force for each installation.

[0004] Therefore, there is an urgent need to provide a grounding stake installation tool to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a grounding stake installation tool that offers two degrees of freedom, allows for angle adjustment during use, is small in size, is suitable for confined spaces, and provides uniform torque during tightening to achieve consistent pre-tightening force and improve the consistency of grounding stake installation.

[0006] To achieve this objective, the present invention adopts the following technical solution: A grounding stake installation tool, comprising: A force-holding component, wherein a positioning hole is provided at the bottom of the force-holding component for fitting onto the grounding stake nut, and the force-holding component is configured to provide a set torque when tightening the grounding stake nut; The adapter is U-shaped and includes two oppositely arranged connecting arms. The force-holding component is connected between the two connecting arms. The adapter can rotate about axis b relative to the force-holding component. The handle portion has an adapter connected to one end, and the handle portion is rotatable about axis a relative to the adapter portion.

[0007] As an optional solution, the force-holding component includes: The housing is movably connected between the two connecting arms. The housing has an internal mounting cavity and a mounting hole communicating with the mounting cavity on its periphery. A positioning disk is rotatably disposed within the mounting cavity, and the positioning hole is provided at the bottom of the positioning disk; A friction force-holding component is disposed within the mounting hole and includes a force-holding steel ball, a force-holding spring, and a sealing member. One side of the force-holding steel ball abuts against the periphery of the positioning plate, and the other side of the force-holding steel ball abuts against the force-holding spring. The sealing member is fixed within the mounting hole and is used to press against the force-holding spring.

[0008] As an alternative, the positioning disk has peaks and troughs on its periphery, and the peaks and troughs are alternately arranged along the circumference of the positioning disk, and the fixed-force steel ball can selectively abut against the peaks or the troughs.

[0009] As an alternative, the friction-fixing component further includes a miniature pressure sensor, which rests against the sealing element and the fixing spring.

[0010] As an alternative, a display screen is provided on the handle, and the display screen is communicatively connected to the miniature pressure sensor.

[0011] As an optional solution, the force-holding assembly further includes a bearing and a clamping nut. The top of the housing has a through hole communicating with the mounting cavity. The outer ring of the bearing is fixedly installed in the through hole. The positioning plate includes a positioning plate body and a connecting rod that are coaxially connected. The positioning plate body is disposed in the mounting cavity. The connecting rod is fixedly passed through the inner ring of the bearing and then threadedly connected to the clamping nut.

[0012] As an optional solution, the outer casing has a first threaded hole communicating with the through hole on its periphery, and a tightening screw is internally threaded into the first threaded hole, the tightening screw being tightened against the outer periphery of the bearing.

[0013] As an optional solution, the connecting arm is rotatably connected to the force-holding component via a first rotation limiting component, the first rotation limiting component comprising: Spline groove component, the spline groove component is fixedly installed inside the connecting arm; A spline shaft is meshed within the spline groove and can slide relative to the spline groove along the axis b. The outer diameter of the spline shaft gradually increases along the axis b and toward the force-holding assembly. A compression spring is provided, wherein a receiving hole is provided on the periphery of the force-holding component, a portion of the spline shaft extends into the receiving hole, the compression spring is located in the receiving hole, one end of the compression spring abuts against the spline shaft, and the other end of the compression spring abuts against the bottom of the receiving hole; A spring-loaded component, one end of which is fixedly connected to the spline shaft, and the other end of which extends to the outside of the connecting arm.

[0014] As an optional solution, the adapter also includes an adapter arm connected between the two connecting arms. The adapter arm has an arc-shaped boss on the side facing the handle. The arc surface of the arc-shaped boss has a plurality of spaced limiting teeth. The handle portion is provided with a mounting groove at one end near the adapter portion, and a second rotation limiting component is disposed in the mounting groove. The second rotation limiting component includes: Two limiting corner blocks are symmetrically arranged and rotatably installed in the mounting groove, and the end edges of the two limiting corner blocks can be locked between any two limiting teeth. A limiting spring is provided, which is connected between the two limiting corner blocks.

[0015] As an optional solution, the limiting corner block includes: The limiting part has an end edge that can be locked between any two limiting teeth; The pressing part is connected to the limiting part at an angle, and the free end of the pressing part is located outside the mounting groove.

[0016] The beneficial effects of this invention are: This invention provides a grounding stake installation tool. In use, the operator holds the handle and first directly mounts the clamping component onto the grounding stake nut through the positioning hole. Then, the tool is rotated clockwise or counterclockwise, causing the grounding stake nut to rotate until it is tightened. This grounding stake installation tool is small in size, allowing for easy one-handed operation. The handle can rotate relative to the adapter about axis a, and the adapter can rotate relative to the clamping component about axis b. Therefore, this grounding stake installation tool provides two degrees of freedom. During use, the operating angle can be adjusted around axes a and b according to space requirements, making it suitable for confined spaces. Furthermore, by setting up the clamping component, a uniform torque can be provided during tightening, achieving uniform pre-tightening force for multiple grounding stake nuts, thereby improving the consistency of multiple grounding stake installations. Therefore, compared with traditional torque wrenches, this grounding stake installation tool is not only suitable for assembling and disassembling grounding stakes in confined spaces, but also provides auxiliary clamping force for the grounding stakes, ensuring that all 1300+ grounding stakes in the machine meet quality inspection requirements. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the grounding pile installation tool provided in an embodiment of the present invention from a first-view perspective; Figure 2This is a schematic diagram of the grounding pile installation tool provided in an embodiment of the present invention from a second perspective. Figure 3 This is a schematic diagram of the grounding pile installation tool provided in an embodiment of the present invention with some parts of the structure hidden; Figure 4 This is a cross-sectional view of the grounding pile installation tool provided in an embodiment of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of the grounding pile installation tool provided in an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the second rotation limiting component provided in an embodiment of the present invention.

[0018] In the picture: 10. Handle; 11. Display screen; 12. Mounting slot; 20. Adapter part; 21. Connecting arm; 22. Adapter arm; 23. Arc-shaped boss; 231. Limiting tooth; 24. First screw; 30. Force-holding component; 31. Housing; 311. Mounting cavity; 312. First protrusion; 3121. Mounting hole; 313. Through hole; 314. First threaded hole; 315. Second protrusion; 3151. Receiving hole; 316. Third protrusion; 3161. Second threaded hole; 32. Positioning plate; 321. Positioning plate body; 3211. Positioning hole; 3212. Crest; 3213. Trough; 322. Connecting rod; 33. Friction force-holding component; 331. Force-holding steel ball; 332. Force-holding spring; 333. Sealing component; 334. Miniature pressure sensor; 34. Bearing; 35. Compression nut; 36. Tightening screw; 37. Bearing retaining ring; 40. First rotation limiting assembly; 41. Spline groove component; 42. Spline shaft; 421. Large diameter section; 422. Small diameter section; 43. Compression spring; 44. Spring-loaded component; 45. Threaded pin; 50. Second rotation limiting assembly; 51. Limiting corner block; 511. Limiting part; 512. Pressing part; 513. Limiting post; 52. Limiting spring; 53. Second screw. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] In the aviation field, grounding stakes are used for current grounding protection, shielding, and other functions. According to process specifications, grounding stakes require a set torque after installation. This means that the nuts of the grounding stakes are precisely tightened to the specified torque value using grounding stake installation tools to achieve the set standard preload force, ensuring that each grounding stake is mechanically secure, electrically reliable, and prevents loosening over the long term.

[0024] Traditional grounding stake installation tools typically use torque wrenches. However, with approximately 1300 grounding stakes installed in the machine, and these stakes often installed in confined areas, torque wrenches are relatively large and require considerable space. This makes them inconvenient to use in small spaces, limiting their applicability. Furthermore, the torque wrench's torque setting accuracy is easily affected by human operation; different personnel or repeated operations can lead to torque deviations, making it difficult to ensure consistent pre-tightening force for each installation.

[0025] To address the aforementioned issues, this embodiment provides a grounding stake installation tool for use with a grounding stake nut. The grounding stake nut can be tightened using the grounding stake installation tool, thereby fixing the grounding stake onto the machine body.

[0026] Specifically, such as Figure 1 and Figure 2As shown, the grounding stake installation tool includes a force-holding component 30, an adapter 20, and a handle 10. The bottom of the force-holding component 30 has a positioning hole 3211. The shape of the positioning hole 3211 is adapted to the outer contour of the grounding stake nut, for example, both are hexagonal. The positioning hole 3211 is used to fit onto the grounding stake nut. The force-holding component 30 is configured to provide a set torque when tightening the grounding stake nut. The adapter 20 is U-shaped and includes two oppositely arranged connecting arms 21. The force-holding component 30 is connected between the two connecting arms 21. The adapter 20 can rotate relative to the force-holding component 30 about axis b. The adapter 20 is connected to one end of the handle 10. The handle 10 can rotate relative to the adapter 20 about axis a.

[0027] The grounding stake installation tool provided in this embodiment allows the operator to hold the handle 10 and first directly mount the force-holding component 30 onto the grounding stake nut through the positioning hole 3211. Then, the tool is rotated clockwise or counterclockwise, causing the grounding stake nut to rotate until it is tightened. This grounding stake installation tool is small in size, allowing for easy one-handed operation. The handle 10 can rotate relative to the adapter 20 around axis a, and the adapter 20 can rotate relative to the force-holding component 30 around axis b. Therefore, this grounding stake installation tool provides two degrees of freedom. During use, the operating angle can be adjusted around axes a and b according to space requirements, making it suitable for confined spaces. Furthermore, by setting the force-holding component 30, a uniform torque is provided during tightening, achieving uniform pre-tightening force for multiple grounding stake nuts, thereby improving the consistency of multiple grounding stake installations. Therefore, compared to traditional torque wrenches, this grounding stake installation tool is not only suitable for assembling and disassembling grounding stakes in confined spaces, but also provides auxiliary force for grounding stakes, ensuring that all 1300+ grounding stakes in the machine meet quality inspection requirements.

[0028] Optionally, such as Figures 2-4 As shown, the constant force assembly 30 includes a housing 31, a positioning disk 32, and a friction constant force component 33. The housing 31 is circular and movably connected between two connecting arms 21. The housing 31 has an installation cavity 311 inside, and an installation hole 3121 communicating with the installation cavity 311 is provided on the periphery of the housing 31. The positioning disk 32 is rotatably disposed in the installation cavity 311. The bottom of the positioning disk 32 has the aforementioned positioning hole 3211. The friction constant force component 33 is disposed in the installation hole 3121 and includes a constant force steel ball 331, a constant force spring 332, and a sealing member 333. One side of the constant force steel ball 331 abuts against the periphery of the positioning disk 32, and the other side of the constant force steel ball 331 abuts against the constant force spring 332. The sealing member 333 is fixed in the installation hole 3121 and is used to press against the constant force spring 332. The outer casing 31 has a first protrusion 312 protruding from its periphery, and the first protrusion 312 has a mounting hole 3121 that communicates with the mounting cavity 311.

[0029] Specifically, the constant force spring 332 elastically presses the constant force steel ball 331 against the outer circumference of the positioning plate 32, so that the constant force steel ball 331 and the positioning plate 32 abut against each other and maintain a pressure value N. The pressure value N can be converted into frictional force between the constant force steel ball 331 and the positioning plate 32. The frictional force generates torque on the positioning plate 32, thereby providing a preset constant force torque for the tightening action of the grounding pile nut. This constant force torque can make the grounding pile nut reach the preset preload. In other words, during the tightening of the grounding pile nut, if the grounding pile nut has not reached the preset preload, the friction between the force-holding steel ball 331 and the positioning plate 32 will cause the outer shell 31 to rotate along with the positioning plate 32. Therefore, continuing to tighten the tool will cause the nut to continue rotating. When the grounding pile nut reaches the set preload, if the tightening tool continues to apply force, it will overcome the friction between the force-holding steel ball 331 and the positioning plate 32, causing the outer shell 31 to rotate relative to the positioning plate 32. That is, the outer shell 31 will spin freely and will no longer apply preload to the grounding pile nut, thus ensuring the consistency of the preload of multiple grounding pile nuts. Therefore, the force-holding component 30 can provide a uniform torque during the tightening process, thereby achieving uniformity of the preload of multiple grounding pile nuts, and thus ensuring the consistency of the installation of multiple grounding piles and meeting the force-holding requirements.

[0030] Optionally, the sealing component 333 is a fixed-force screw, which is threaded into the mounting hole 3121 for easy disassembly and assembly. The pressure value N between the fixed-force steel ball 331 and the positioning plate 32 is related to the fixed-force spring 332. Therefore, by adjusting the tightening degree of the fixed-force screw, the length of the fixed-force spring 332 can be adjusted, thereby changing the elastic force applied by the fixed-force spring 332 to the positioning plate 32. This allows for changing the working torque of the tool within a certain range, making it suitable for the installation and auxiliary fixed force of grounding pile nuts with different preloads.

[0031] Optionally, such as Figure 3As shown, the positioning disk 32 is circular in the shape of petals. The periphery of the positioning disk 32 has peaks 3212 and troughs 3213. The peaks 3212 and troughs 3213 are arranged alternately along the periphery of the positioning disk 32. The fixed steel ball 331 can selectively abut against the peaks 3212 or the troughs 3213. When the outer casing 31 rotates together with the positioning disk 32, the constant force steel ball 331 abuts against the trough 3213. At this time, the friction between the constant force steel ball 331 and the positioning disk 32 is minimal, and it is in a low torque stable position. When the set torque is reached, the constant force steel ball 331 abuts against the crest 3212, and the friction between the constant force steel ball 331 and the positioning disk 32 reaches its maximum. The height of the crest 3212 determines the maximum turning torque. When the constant force steel ball 331 flips over the crest 3212 and enters the next trough 3213, it needs to overcome the pressure of the constant force spring 332. The torque increases significantly, which will produce a clear sense of jerking. This makes it easier for the operator to perceive whether the constant force is in place, thereby ensuring the consistency of the installation torque each time.

[0032] Optionally, such as Figure 3 and Figure 4 As shown, the friction-fixing component 33 also includes a miniature pressure sensor 334, which abuts against the sealing component 333 and the fixing spring 332. The sealing component 333 presses against the miniature pressure sensor 334, which in turn presses against the fixing spring 332. Therefore, during the tightening of the grounding pile nut, the miniature pressure sensor 334 can monitor the pressure value between the fixing steel ball 331 and the positioning plate 32 in real time and accurately, ensuring that the fixing torque of each assembly meets the preset requirements, guaranteeing the stability and controllability of the fixing torque, and improving the consistency and traceability of the grounding pile installation torque.

[0033] Optionally, combined Figure 1 The handle 10 is equipped with a display screen 11, which is communicatively connected to the miniature pressure sensor 334. Specifically, the display screen 11 has a built-in development board. The miniature pressure sensor 334 transmits the detected pressure value to the development board, which converts the pressure value into torque through its built-in program and displays it intuitively on the display screen 11. The operator can monitor the current tightening torque in real time and intuitively, ensuring that the tightening torque of the grounding pile nut remains stable within a certain range.

[0034] In this system, the torque T = μNr experienced by the positioning disk 32 is measured directly by the micro pressure sensor 334. The friction coefficient μ between the stationary steel ball 331 and the positioning disk 32 can be obtained through material properties. r is the distance from the point of application of the force to the axis of the positioning disk 32, which is also a known quantity. Therefore, the above formula can be written into the built-in program of the development board, which can then convert the measured pressure value into torque through its built-in program. After obtaining the calculated stationary torque, the development board can also transmit the data to a mobile device (such as a mobile phone or computer) via its wireless module. The monitoring system on the mobile device will display the stationary torque-related information for each grounding pile, such as the maximum and minimum values ​​of the stationary torque, the curve of the stationary torque changing over time, etc. It can also record the stationary operation as a video and upload it to the monitoring system, including functions such as saving the stationary operation information, realizing the visual monitoring of the stationary process and further advancing the assembly and inspection work towards numericalization.

[0035] Optionally, such as Figure 3 and Figure 4 As shown, to enable the rotation of the positioning disk 32, the force-holding assembly 30 also includes a bearing 34 and a clamping nut 35. The top of the outer casing 31 has a through hole 313 communicating with the mounting cavity 311. The outer ring of the bearing 34 is fixedly installed in the through hole 313. The positioning disk 32 includes a positioning disk body 321 and a connecting rod 322 coaxially connected. The diameter of the connecting rod 322 is smaller than the diameter of the positioning disk body 321. The positioning disk body 321 is disposed within the mounting cavity 311 and has the aforementioned positioning hole 3211. The connecting rod 322 is fixedly passed through the inner ring of the bearing 34 and then threadedly connected to the clamping nut 35. Because the positioning disk 32 is fixedly connected to the inner ring of the bearing 34, and the outer casing 31 is fixedly connected to the outer ring of the bearing 34, the outer casing 31 can rotate relative to the positioning disk 32 through the bearing 34, reducing friction and making the rotation smoother.

[0036] Optionally, a bearing retaining ring 37 is provided between the clamping nut 35 and the inner ring end face of the bearing 34. The clamping nut 35 is threadedly connected to the connecting rod 322 of the positioning plate 32 and abuts against the bearing retaining ring 37. The bearing retaining ring 37 abuts against the inner ring end face of the bearing 34. Therefore, the connecting rod 322 is fixed to the inner ring of the bearing 34 by the clamping nut 35 and the bearing retaining ring 37. Furthermore, by providing the bearing retaining ring 37, the clamping nut 35 can be prevented from directly contacting the bearing 34, thereby reducing the wear on the bearing 34.

[0037] Optionally, such as Figure 4As shown, the outer casing 31 has a first threaded hole 314 communicating with the through hole 313 on its periphery. A tightening screw 36 is internally threaded into the first threaded hole 314 and tightens against the outer periphery of the bearing 34. The bearing 34 can be fixed in the through hole 313 by the tightening screw 36, and it is easy to install and remove. The tightening screw 36 can be hidden inside the first threaded hole 314 to improve aesthetics.

[0038] Optionally, such as Figure 1 , Figure 3 and Figure 5 As shown, one of the connecting arms 21 is rotatably connected to the housing 31 of the force-holding assembly 30 via a first rotation limiting assembly 40. Specifically, the first rotation limiting assembly 40 includes a spline groove 41, a spline shaft 42, a compression spring 43, and a spring-loaded member 44. The spline groove 41 is fixedly installed in the hole of the connecting arm 21. The spline shaft 42 is engaged with the spline groove 41 and can slide relative to the spline groove 41 along axis b. Along axis b and towards the force-holding assembly 30, the outer diameter of the spline shaft 42 gradually increases. A receiving hole 3151 is provided on the circumference of the force-holding assembly 30. Part of the splined shaft 42 extends into the receiving hole 3151. The compression spring 43 is located inside the receiving hole 3151, with one end of the compression spring 43 abutting against the splined shaft 42 and the other end abutting against the bottom of the receiving hole 3151. One end of the spring-loaded member 44 is fixedly connected to the splined shaft 42, and the other end of the spring-loaded member 44 extends to the outside of the connecting arm 21. The axis of the splined member 41, the splined shaft 42, the compression spring 43, and the spring-loaded member 44 is axis b. A second protrusion 315 protrudes from the periphery of the outer casing 31, and the second protrusion 315 abuts against the connecting arm 21. The receiving hole 3151 is formed inside the second protrusion 315, and the receiving hole 3151 is aligned with the hole in the connecting arm 21.

[0039] Optionally, such as Figure 5 As shown, the other connecting arm 21 is connected to the housing 31 via a threaded pin 45. Specifically, a third protrusion 316 is also provided on the periphery of the housing 31. The third protrusion 316 is disposed opposite to the second protrusion 315, and the third protrusion 316 is mated with the other connecting arm 21. A second threaded hole 3161 is provided in the third protrusion 316. The second threaded hole 3161 is aligned with the hole on the other connecting arm 21. The threaded pin 45 passes through the hole on the connecting arm 21 and is threadedly connected to the second threaded hole 3161. The other connecting arm 21 can rotate around the threaded pin 45.

[0040] Specifically, the splined shaft 42 is elastically connected to the housing 31 via a compression spring 43. The spline groove member 41 is a circular ring and can be fixed in the hole of the connecting arm 21 by its outer circumference thread. The spline groove member 41 is engaged with the splined shaft 42. For example... Figure 5As shown, the spline shaft 42 is trumpet-shaped and is located along axis b away from the force-holding component 30. The spline shaft 42 includes a large-diameter section 421 and a small-diameter section 422 connected in sequence. The small-diameter section 422 is a cylindrical optical shaft. The large-diameter section 421 is trumpet-shaped, and the small-diameter end of the trumpet-shaped section is connected to the small-diameter section 422. The spline is located on the outer circumferential surface of the large-diameter section 421. Therefore, along axis b and towards the force-holding component 30, the outer diameter of the spline gradually increases.

[0041] In the natural state without external force, due to the presence of the compression spring 43, the large diameter section 421 of the spline shaft 42 and the spline groove 41 remain engaged. At this time, the force-holding assembly 30 and the adapter 20 cannot rotate relative to each other, and due to the trumpet-shaped arrangement of the large diameter section 421, the spline shaft 42 cannot disengage from the spline groove 41. When it is necessary to adjust the relative angle between the force-holding assembly 30 and the adapter 20, the operator can press the spring-loaded component 44, causing it to overcome the spring force of the compression spring 43 and press the spline shaft 42 inward. This allows the small-diameter section 422 of the spline shaft 42 to engage with the spline groove 41. Since there is no spline on the small-diameter section 422, the spline shaft 42 and the spline groove 41 are disengaged. Therefore, the force-holding assembly 30 and the adapter 20 can rotate freely relative to each other around axis b. That is, by rotating the connecting arm 21 around axis b, the connecting arm 21 can drive the spline groove 41 to rotate freely relative to the small-diameter section 422, thereby adjusting to a suitable angle for use in confined spaces. After releasing the spring-loaded component 44, the spline shaft 42 and the spline groove 41 are re-engaged under the action of the compression spring 43, releasing the free rotation state, thus fixing the connecting arm 21 at that angle for use.

[0042] Therefore, the first rotation limiting component 40 described above has a simple structure and is easy to operate. It allows the adapter 20 to rotate relative to the force-holding component 30, and can also lock the adapter 20 at a suitable angle for use.

[0043] Optionally, the spring-loaded component 44 is a spring-loaded screw, which passes through a hole on the connecting arm 21 and is threaded to the splined shaft 42. This method is convenient for disassembly and assembly, and the extension length of the spring-loaded component 44 beyond the connecting arm 21 can be adjusted for easy operation.

[0044] like Figure 1 and Figure 3As shown, the adapter 20 also includes an adapter arm 22 connected between the two connecting arms 21. The adapter arm 22 has an arc-shaped boss 23 on the side facing the handle 10. The arc surface of the arc-shaped boss 23 has a plurality of spaced limiting teeth 231. The handle 10 has a mounting groove 12 at one end near the adapter 20. A second rotation limiting component 50 is provided in the mounting groove 12. The second rotation limiting component 50 includes a limiting spring 52 and two limiting corner blocks 51. The two limiting corner blocks 51 are symmetrically arranged and rotatably installed in the mounting groove 12. The end edges of the two limiting corner blocks 51 can be locked between any two limiting teeth 231. The limiting spring 52 is fixedly connected between the two limiting corner blocks 51.

[0045] Specifically, the adapter arm 22 is rotatably connected to the handle part 10 via a first screw 24, the axis of the first screw 24 being axis a. The two limiting corner blocks 51 are rotatably connected to the handle part 10 via second screws 53, and the two limiting corner blocks 51 are elastically connected via a limiting spring 52. Figure 3 As shown, in a natural state without external force, due to the connection of the limiting spring 52, the end edges of the two limiting corner blocks 51 can be locked between the corresponding two limiting teeth 231. At this time, the handle 10 and the adapter 20 cannot rotate relative to each other. When it is necessary to adjust the relative angle between the handle 10 and the adapter 20, the operator can rotate the limiting corner blocks 51 around the second screw 53, so that the two limiting corner blocks 51 overcome the elastic force of the limiting spring 52 and rotate in a direction away from each other. At this time, the two limiting corner blocks 51 disengage from the limiting teeth 231, so the handle 10 and the adapter 20 can rotate freely relative to each other around axis a. That is, by rotating the handle 10 around axis a, the angle of the handle 10 relative to the adapter 20 can be adjusted to suit use in confined spaces. After the limiting corner block 51 is released, under the action of the limiting spring 52, the two limiting corner blocks 51 are reset and re-locked between the corresponding two limiting teeth 231, releasing the free rotation state, thereby fixing the handle part 10 at this angle for use.

[0046] Therefore, the second rotation limiting component 50 described above has a simple structure and is easy to operate. It allows the handle 10 to rotate relative to the fixed transition part 20, and can also lock the handle 10 at a suitable angle for use.

[0047] Optionally, combined Figure 1 and Figure 6The limiting corner block 51 includes a limiting part 511 and a pressing part 512. A limiting spring 52 is connected between the limiting parts 511 of the two limiting corner blocks 51. The end edge of the limiting part 511 can be locked between any two limiting teeth 231. The pressing part 512 is connected to the limiting part 511 at an angle, which can be selected as 90°. The free end of the pressing part 512 is located outside the mounting groove 12 for easy pressing by the operator. When it is necessary to adjust the relative angle between the handle part 10 and the adapter part 20, the operator can press the two pressing parts 512 inward with two fingers respectively, so that the two limiting parts 511 can overcome the elastic force of the limiting spring 52 and rotate in a direction away from each other and disengage from the limiting teeth 231. The operation is quick and convenient.

[0048] Optionally, each limiting corner block 51 also includes a limiting post 513. The limiting posts 513 of the two limiting corner blocks 51 are arranged opposite to each other, and the two ends of the limiting spring 52 are respectively fitted onto the corresponding limiting post 513. The limiting post 513 can limit the radial displacement of the limiting spring 52, allowing it to extend and retract only along the axial direction, ensuring the stability of the force direction, and providing support for the limiting spring 52, thereby improving the stability and service life of the limiting spring 52.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A grounding stake installation tool, characterized in that, include: A force-holding component (30) is provided with a positioning hole (3211) at its bottom. The positioning hole (3211) is used to fit onto the grounding stake nut. The force-holding component (30) is configured to provide a set torque when the grounding stake nut is tightened. The adapter (20) is U-shaped and includes two oppositely arranged connecting arms (21). The force-holding component (30) is connected between the two connecting arms (21). The adapter (20) can rotate about axis b relative to the force-holding component (30). The handle (10) is connected to one end of the adapter (20), and the handle (10) can rotate about axis a relative to the adapter (20).

2. The grounding stake installation tool according to claim 1, characterized in that, The force-holding component (30) includes: The outer shell (31) is movably connected between the two connecting arms (21). The interior of the outer shell (31) is provided with a mounting cavity (311), and the periphery of the outer shell (31) is provided with a mounting hole (3121) communicating with the mounting cavity (311). The positioning disk (32) is rotatably disposed in the mounting cavity (311), and the positioning hole (3211) is provided at the bottom of the positioning disk (32). A friction force-holding component (33) is disposed in the mounting hole (3121) and includes a force-holding steel ball (331), a force-holding spring (332), and a sealing member (333). One side of the force-holding steel ball (331) abuts against the periphery of the positioning plate (32), and the other side of the force-holding steel ball (331) abuts against the force-holding spring (332). The sealing member (333) is fixed in the mounting hole (3121) and is used to press against the force-holding spring (332).

3. The grounding stake installation tool according to claim 2, characterized in that, The positioning disk (32) has peaks (3212) and troughs (3213) formed on its periphery. The peaks (3212) and troughs (3213) are alternately arranged along the circumference of the positioning disk (32). The fixed-force steel ball (331) can selectively abut against the peaks (3212) or the troughs (3213).

4. The grounding stake installation tool according to claim 2, characterized in that, The friction force-holding component (33) also includes a miniature pressure sensor (334), which abuts against the sealing component (333) and the force-holding spring (332).

5. The grounding stake installation tool according to claim 4, characterized in that, The handle (10) is provided with a display screen (11), which is communicatively connected to the miniature pressure sensor (334).

6. The grounding stake installation tool according to claim 2, characterized in that, The force-holding component (30) also includes a bearing (34) and a clamping nut (35). The top of the housing (31) is provided with a through hole (313) communicating with the mounting cavity (311). The outer ring of the bearing (34) is fixedly installed in the through hole (313). The positioning disk (32) includes a positioning disk body (321) and a connecting rod (322) coaxially connected. The positioning disk body (321) is disposed in the mounting cavity (311). The connecting rod (322) is fixedly passed through the inner ring of the bearing (34) and then threadedly connected to the clamping nut (35).

7. The grounding stake installation tool according to claim 6, characterized in that, The outer casing (31) has a first threaded hole (314) that communicates with the through hole (313) on its periphery. A tightening screw (36) is threaded into the first threaded hole (314) and the tightening screw (36) is tightened against the outer periphery of the bearing (34).

8. The grounding stake installation tool according to claim 1, characterized in that, The connecting arm (21) is rotatably connected to the force-holding component (30) via a first rotation limiting component (40), the first rotation limiting component (40) comprising: Spline groove component (41), the spline groove component (41) is fixedly installed inside the connecting arm (21); Spline shaft (42), the spline shaft (42) is meshed with the spline groove (41) and can slide relative to the spline groove (41) along the axis b. Along the axis b and in the direction toward the force-holding assembly (30), the spline outer diameter of the spline shaft (42) gradually increases. A compression spring (43) is provided with a receiving hole (3151) on the periphery of the force-holding component (30). Part of the spline shaft (42) extends into the receiving hole (3151). The compression spring (43) is located in the receiving hole (3151), and one end of the compression spring (43) abuts against the spline shaft (42), while the other end of the compression spring (43) abuts against the bottom of the receiving hole (3151). A spring-loaded component (44) is fixedly connected at one end to the spline shaft (42), and the other end of the spring-loaded component (44) extends to the outside of the connecting arm (21).

9. The grounding stake installation tool according to claim 1, characterized in that, The adapter (20) also includes an adapter arm (22) connected between the two connecting arms (21). The adapter arm (22) has an arc-shaped boss (23) on the side facing the handle (10). The arc-shaped boss (23) has a plurality of spaced limiting teeth (231) on its arc surface. The handle (10) has a mounting groove (12) at one end near the adapter (20), and a second rotation limiting component (50) is provided in the mounting groove (12). The second rotation limiting component (50) includes: Two limiting corner blocks (51) are symmetrically arranged and rotatably installed in the mounting groove (12). The end edges of the two limiting corner blocks (51) can be locked between any two limiting teeth (231). A limiting spring (52) is connected between the two limiting corner blocks (51).

10. The grounding stake installation tool according to claim 9, characterized in that, The limiting corner block (51) includes: The limiting part (511) has an end edge that can be locked between any two of the limiting teeth (231). The pressing part (512) is connected at an angle to the limiting part (511), and the free end of the pressing part (512) is located outside the mounting groove (12).

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