A tool for installing a bolt in a narrow space and a construction method

Abstract

The present application relates to a kind of tools for installing bolt in narrow space, comprising: holding pole, one end of holding pole can be extended into narrow space, the other end can be hand-held and adjust the position of holding pole extension section to bolt hole;Clamping assembly, clamping assembly is connected to the end of extension section, can be respectively clamped and fixed to the nut and screw rod of bolt;Internal viewing component, internal viewing component is connected to holding pole, for showing the position of clamping assembly and bolt and bolt hole;Tow rope, tow rope is along the outer wall of holding pole;Pull handle, pull handle is arranged on holding pole, and pull handle is connected with the other side of tow rope, can pull tow rope and let clamping assembly be connected to nut and screw rod;Drive assembly, drive assembly is connected with clamping assembly, can drive clamping assembly to drive nut and screw rod screw connection.The present application can hold bolt and extend into narrow space for operation by holding pole and clamping assembly, also can be observed by internal viewing component to assist construction, improve work efficiency, ensure construction quality.

Description

Technical Field

[0001] This invention relates to the field of construction engineering, and specifically to a tool and construction method for installing bolts in confined spaces. Background Technology

[0002] To improve the installation quality of duct systems and reduce air leakage in civil engineering ventilation shafts, according to national standards and specifications, some smoke exhaust, positive pressure air supply, and ventilation systems should not directly utilize civil engineering ventilation shafts; instead, lining ducts must be installed within the civil engineering ventilation shafts. The narrow installation space between the side walls of the civil engineering ventilation shaft and the outer wall of the duct increases the difficulty of installing lining ducts.

[0003] At present, it is necessary to increase the installation space between the side wall of the civil engineering ventilation shaft and the outer wall of the ventilation duct, and reserve the operating space for manual entry to tighten bolts. Some ventilation shafts have some bolts that are not tightened due to insufficient manual operation space on site; or the upper and lower ventilation ducts can be connected in sections through a vertical shaft, and then vertically hoisted from the high floor to the low floor and fixed by a fixed bracket.

[0004] These existing construction methods often result in duct leakage rates failing to meet national standards, affecting the installation quality of the duct system. Furthermore, the current installation process lacks specialized installation tools, requiring a large number of on-site workers, leading to low efficiency and impacting construction progress. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a tool and construction method for installing bolts in narrow spaces, thereby solving the problems of narrow installation space, high construction difficulty, low work efficiency, and poor installation quality.

[0006] The technical solution to achieve the above objective is: a tool for installing bolts in narrow spaces, comprising: a holding rod, one end of which can extend into the interior of the narrow space, and the other end which can be held and moved to adjust the position of the extended section on the holding rod to the bolt hole; a clamping assembly, which is connected to the end of the extended section on the holding rod and can clamp the nut and the bolt respectively; and an internal viewing assembly, which is connected to the holding rod and is used to display the corresponding positions of the clamping assembly, the bolt, and the bolt hole. A traction rope is provided along the outer wall of the holding rod, and one side of the traction rope is connected to the clamping assembly; a pull handle is provided on the holding rod and is connected to the other side of the traction rope, the pull handle can pull the traction rope to allow the clamping assembly to engage the nut and the screw; a drive assembly is connected to the other end of the holding rod and is connected to the clamping assembly, the drive assembly can drive the clamping assembly to screw the nut and the screw together.

[0007] The present invention discloses a tool for installing bolts in narrow spaces. Through the holding rod and clamping assembly, the bolt can be clamped and inserted into the narrow space for operation. It can also observe and assist in the construction through the internal viewing assembly, thereby improving work efficiency and ensuring construction quality.

[0008] A further improvement of the tool for installing bolts in confined spaces according to the present invention is that the clamping assembly includes: a first connecting rod; a screwing assembly, one side of which is connected to the end of the first connecting rod and connected to the driving assembly, the screwing assembly rotating under driving force; a latch, which can engage the screw, the latch being disposed on the other side of the screwing assembly, the latch and the screw rotating integrally; a second connecting rod, the second connecting rod being disposed opposite to the first connecting rod; a latch, the latch being connected to the end of the second connecting rod and disposed opposite to the latch, the latch being accommodating the nut; and a telescopic assembly, the telescopic assembly being connected between the first connecting rod and the second connecting rod, capable of telescopically adjusting the distance between the first connecting rod and the second connecting rod.

[0009] A further improvement of the tool for installing bolts in confined spaces according to the present invention is that the clamping assembly further includes a protective cover covering the outside of the screwing assembly and the snap fastener.

[0010] A further improvement of the tool for installing bolts in confined spaces according to the present invention is that the tightening assembly includes: a first drive shaft connected to the drive assembly, the first drive shaft being driven to rotate; a first gear sleeved on the outside of the first drive shaft, the first gear being driven by the first drive shaft to rotate synchronously; a second gear meshing with the first gear, the second gear being rotatable under force; and a second drive shaft, one side of the second drive shaft being connected to the second gear and the other side being connected to the buckle, the second drive shaft being able to drive the buckle and the engaged screw to rotate together.

[0011] A further improvement of the tool for installing bolts in confined spaces according to the present invention is that the telescopic assembly includes: a first sleeve, one side of which is connected to the end of the first connecting rod away from the screwing assembly, and the other side of which is open; a second sleeve, one side of which is connected to the end of the second connecting rod away from the clip, and the other side of which is movably connected to the opening of the first sleeve; and a spring disposed inside the second sleeve, which is compressed by the movement of the first sleeve.

[0012] A further improvement of the tool for installing bolts in a narrow space according to the present invention is that the first connecting rod is provided with a fixing ring for positioning the traction rope.

[0013] A further improvement of the tool for installing bolts in confined spaces according to the present invention is that the clamping assembly is provided with a fixing hook for connecting the end of the traction rope.

[0014] A further improvement of the tool for installing bolts in a narrow space according to the present invention is that the internal viewing assembly includes: a camera connected to the clamping assembly; and a supplementary light disposed adjacent to the camera.

[0015] A further improvement of the present invention for a tool for installing bolts in a narrow space is that the internal viewing assembly further includes: a display screen disposed on the holding rod, the display screen being connected to the camera, and the display screen being for viewing by a person to adjust the position of the extension section on the holding rod.

[0016] A construction method for installing bolts in a confined space using tools includes the following steps: Connecting upper and lower sections of ductwork within a ventilation shaft and aligning the bolt holes of the upper and lower duct flanges; placing a nut in the holder of a clamping assembly and engaging a screw into the clip of the clamping assembly; holding a handle and extending the end of the handle equipped with the clamping assembly into the confined space between the outer wall of the ductwork and the side wall of the ventilation shaft; observing through an internal viewing component whether the screw held by the clamping assembly correctly passes through the bolt holes on the upper and lower duct flanges; after confirming that the end of the screw passes through the bolt holes, tightening the traction rope using a pull handle to pull the first connecting rod and the clip towards the holder, thereby pressing the screw and nut together; activating the drive assembly to drive the tightening assembly to rotate, thereby rotating the screw and screwing it into the nut. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a tool for installing bolts in a narrow space according to the present invention.

[0018] Figure 2 This is a cross-sectional view of a tool for installing bolts in a narrow space according to the present invention.

[0019] Figure 3 This is a schematic flowchart of a construction method for installing bolts in a narrow space using tools, according to the present invention.

[0020] Figure 4 This is a schematic diagram of the pre-reserved mounting holes on the ventilation shaft of the present invention.

[0021] In the diagram: 10. Tool; 11. Holding rod; 12. Clamping assembly; 121. First connecting rod; 122. Second connecting rod; 123. Buckle; 124. Clip; 125. Protective cover; 126. First drive shaft; 127. First gear; 128. Second gear; 129. Second drive shaft; 1210. First sleeve; 1211. Second sleeve; 1212. Spring; 1213. Retaining ring; 1214. Retaining hook; 13. Internal viewing assembly; 131. Camera; 132. Display screen; 14. Traction rope; 15. Pull handle; 16. Drive assembly; 20. Bolt; 21. Nut; 22. Screw; 30. Ventilation shaft; 31. Air duct; 32. Air duct flange; 33. Bolt hole; 34. Reserved mounting hole; 40. Narrow space; 50. Brick wall. Detailed Implementation

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

[0023] See Figure 1 The diagram shows a structural schematic of a tool for installing bolts in a narrow space according to the present invention. The present invention provides a tool for installing bolts in a narrow space, comprising: a holding rod 11, one end of which can extend into the interior of the narrow space 40, and the other end which can be held and moved to adjust the position of the extended section of the holding rod 11 to the bolt hole 33.

[0024] The material and size of the holding rod 11 can be set according to actual needs, and no specific restrictions are imposed here.

[0025] In this embodiment, the holding rod 11 can be configured as a telescopic rod, which facilitates the adjustment of the length of the extended section according to the narrow space 40 during construction.

[0026] The clamping assembly 12 is connected to the end of the extension section on the holding rod 11, and the clamping assembly 12 can clamp the nut 21 and the screw 22 of the bolt 20 respectively.

[0027] The hand grip 11 can be moved to adjust the position of the clamping assembly 12 within the narrow space 40. The bolt 20 corresponds to the bolt hole 33 on the duct flange 32.

[0028] The internal viewing component 13 is connected to the holding rod 11 and is used to display the corresponding positions of the clamping component 12, the bolt 20, and the bolt hole 33.

[0029] One end of the internal viewing component 13 can extend into the narrow space 40, while the other end is displayed on the outside. This helps the auxiliary bolt 20 to align with the bolt hole 33, reducing construction difficulty and improving construction efficiency.

[0030] A traction rope 14 is provided along the outer wall of the holding rod 11, and one side of the traction rope 14 is connected to the clamping assembly 12.

[0031] One end of the traction rope 14 is manually controlled by the construction personnel, and the other end is connected to the clamping assembly 12, allowing the construction personnel to directly pull and control the clamping assembly 12 to engage the screw 22 and nut 21 of the bolt 20.

[0032] A pull handle 15 is provided on the holding rod 11 and is connected to the other side of the traction rope 14. The pull handle 15 can pull the traction rope 14 to allow the clamping assembly 12 to engage the nut 21 and the screw 22.

[0033] The pull handle 15 provides an operating end for the traction rope 14, making it convenient for construction workers to operate and reducing the difficulty of construction.

[0034] The drive assembly 16 is connected to the other end of the holding rod 11 and is connected to the clamping assembly 12. The drive assembly 16 can drive the clamping assembly 12 to screw the nut 21 and the screw 22 together.

[0035] The drive assembly 16 includes a switch located at the hand-held end of the handle 11, which controls the activation of the clamping assembly 12, making it easier for construction workers to operate and reducing the difficulty of construction.

[0036] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, wherein the clamping assembly 12 includes a first link 121.

[0037] The first link 121 can be set to an L-shape or a straight line, depending on the actual needs. No specific restrictions are imposed here.

[0038] The screwing assembly is connected to the end of the first connecting rod 121 on one side and is connected to the drive assembly 16. The screwing assembly rotates under the driving force.

[0039] The screwing assembly will be described in detail below, and will not be repeated here.

[0040] Clip 123 can engage screw 22. Clip 123 is located on the other side of the screwing assembly. Clip 123 and screw 22 can rotate together.

[0041] The clip 123 has a groove for holding the head of the bolt 20, and the size of the groove matches the size of the bolt 20. The rotation direction of the clip 123 is the same as the screwing direction of the screw 22.

[0042] The second link 122 is arranged opposite to the first link 121.

[0043] The second link 122 is connected to the holding rod 11. The second link 122 can be set in an L-shape to form an installation space opposite to the first link 121.

[0044] The clip 124 is connected to the end of the second link 122 and is positioned opposite to the buckle 123. The clip 124 can accommodate the nut 21.

[0045] The card holder 124 has a groove for placing the nut 21, and the size of the groove matches the size of the nut 21.

[0046] In this embodiment, the groove of the clip 124 is opposite to the slot of the buckle 123, the nut 21 is attached to the side wall of the duct flange 32, and the inner hole of the nut 21 is opposite to the bolt hole 33.

[0047] A telescopic assembly is connected between the first link 121 and the second link 122, and can telescopically adjust the distance between the first link 121 and the second link 122.

[0048] The telescopic assembly extends and retracts to adjust the distance between the first link 121 and the second link 122 so as to engage the screw 22 passing through the bolt hole 33 with the nut 21.

[0049] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, wherein the clamping assembly 12 further includes a protective cover 125, which covers the outside of the tightening assembly and the latch 123.

[0050] The protective cover 125 can be a rectangular cover or an arc-shaped cover; no specific limitation is made here. One side of the protective cover 125 is provided with an opening for the screw 22 to extend out. At the connection between the screwing assembly and the first connecting rod 121, the protective cover 125 is provided with a corresponding through hole.

[0051] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, the tightening assembly comprising: a first drive shaft 126 connected to a drive assembly 16, the first drive shaft 126 being rotated by a driving force.

[0052] The first drive shaft 126 is connected to the motor of the drive assembly 16, and the motor can control the start and stop of the rotation of the first drive shaft 126.

[0053] In this embodiment, the motor drive time can be set as the effective drive cycle by calculating the engagement time of the bolt 20 and the nut 21. Each press of the switch button on the corresponding rod 11 constitutes one effective drive cycle. There is no need to manually control the motor drive time, making the construction operation simple and improving construction efficiency.

[0054] The first gear 127 is sleeved on the outside of the first drive shaft 126, and the first gear 127 is driven by the first drive shaft 126 to rotate synchronously.

[0055] The first gear 127 rotates in the same direction as the first drive shaft 126, the first drive shaft 126 is connected to the center of the first gear 127, and the first gear 127 is perpendicular to the first drive shaft 126.

[0056] The second gear 128 meshes with the first gear 127, and the second gear 128 can rotate under force.

[0057] The second gear 128 is set on the first gear 127 near the buckle 123, and the first gear 127 and the second gear 128 are set perpendicular to each other.

[0058] The second drive shaft 129 is connected to the second gear 128 on one side and to the buckle 123 on the other side. The second drive shaft 129 can drive the buckle 123 and the engaged screw 22 to rotate together.

[0059] The second drive shaft 129 is connected to the center of the second gear 128, and the rotation direction of the second gear 128 and the second drive shaft 129 are consistent.

[0060] In this embodiment, the length direction of the second rotating shaft is set to be consistent with the length direction of the screw 22.

[0061] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in a confined space according to the present invention. The present invention provides a tool for installing bolts in a confined space, the telescopic assembly comprising: a first sleeve 1210, one side of the first sleeve 1210 being connected to the end of a first connecting rod 121 away from the tightening assembly, and the other side of the first sleeve 1210 being configured as an opening.

[0062] The first sleeve 1210 is arranged parallel to the second rotating shaft.

[0063] The second sleeve 1211 has one side connected to the end of the second connecting rod 122 away from the card holder 124, and the other side of the second sleeve 1211 is movably connected to the opening of the first sleeve 1210.

[0064] One end of the second sleeve 1211 can reciprocate at the opening of the first sleeve 1210.

[0065] Spring 1212 is disposed inside the second sleeve 1211, and spring 1212 is compressed by force when the first sleeve 1210 moves.

[0066] The traction rope 14 pulls the first connecting rod 121 and the first sleeve 1210 to move, changing the distance between the first sleeve 1210 and the second connecting rod 122. The second sleeve 1211 retracts into the opening of the first sleeve 1210 and compresses the internal spring 1212, causing the buckle 123 to move towards the bracket 124, which in turn drives the screw 22 to move and engage with the nut 21.

[0067] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, wherein a first connecting rod 121 is provided with a retaining ring 1213 for positioning a traction rope 14.

[0068] The number and position of the fixing rings 1213 are not specifically limited here. The traction rope 14 is arranged according to the extension direction of the outer wall of the first connecting rod 121 and the first sleeve 1210. The fixing rings 1213 are used to fix the traction rope 14 to the outer wall of the first connecting rod 121. The direction of force applied by the traction rope 14 is adjusted according to the arrangement direction of the first connecting rod 121 and the first sleeve 1210.

[0069] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, wherein a clamping assembly 12 is provided with a fixing hook 1214 for connecting the end of a traction rope 14.

[0070] A fixing hook 1214 is provided on the first connecting rod 121 to hook and fix the end of the traction rope 14, providing a force point for applying force.

[0071] See Figure 2 The image shows a cross-sectional view of a tool for installing bolts in confined spaces according to the present invention. The present invention provides a tool for installing bolts in confined spaces, wherein the internal viewing assembly 13 includes a camera 131 connected to a clamping assembly 12.

[0072] The camera 131 should be positioned so that it faces the latch 123 and the card holder 124.

[0073] A fill light is placed adjacent to camera 131.

[0074] In narrow spaces, there may be insufficient light. Using supplementary lighting to illuminate the camera 131 can improve the clarity of the images captured by the camera 131, reduce construction difficulty, and improve construction efficiency.

[0075] See Figure 1 The diagram shows a structural schematic of a tool for installing bolts in a confined space according to the present invention. The present invention provides a tool for installing bolts in a confined space, the internal viewing assembly 13 further including: a display screen 132, the display screen 132 being disposed on the holding rod 11, the display screen 132 being connected to a camera 131, and the display screen 132 being for observation by a person to adjust the position of the extension section on the holding rod 11.

[0076] The display screen 132 assists in observing the operation in a narrow space, reducing construction difficulty and improving construction efficiency.

[0077] See Figure 3 This diagram illustrates a construction method for installing bolts using tools in a confined space according to the present invention. The present invention provides a construction method for installing bolts 20 using tools in a confined space, comprising the following steps:

[0078] Step S210: Connect the upper and lower sections of the air duct 31 inside the air shaft 30, and align the bolt holes 33 of the upper and lower air duct flanges 32.

[0079] Among them, multiple duct flanges 32 need to be installed on the outer periphery of the upper and lower sections of the duct 31. Each duct flange 32 should be aligned vertically and attached to each other. Then, step S220 is executed.

[0080] Step S220: Place the nut 21 into the clip 124 of the clamping assembly 12 and engage the screw 22 into the latch 123 of the clamping assembly 12.

[0081] When it is necessary to install a washer on the nut 21, the washer and the nut 21 can be placed together in the clip 124 during the preliminary preparation work. Due to the elastic force of the spring 1212 inside the second sleeve 1211, the buckle 123 and the clip 124 remain separated. Then, step S230 is executed.

[0082] Step S230: Hold the rod 11 and insert the end of the rod 11 with the clamping component 12 into the narrow space between the outer wall of the air duct 31 and the side wall of the air shaft.

[0083] In this process, the moving rod 11 can be connected to the bolt holes 33 at different positions, and then step S240 is executed.

[0084] Step S240: Observe through the internal viewing component 13 whether the screw 22 held by the clamping component 12 passes through the bolt hole 33 on the upper and lower air duct flange 32 correctly.

[0085] In this step, the camera 131 and the supplementary light need to be turned on so that the construction personnel can observe the position of the bolt hole 33 in the narrow space 40 through the screen 132. Then, step S250 is executed.

[0086] Step S250: After confirming that the end of the bolt 20 passes through the bolt hole 33, pull the traction rope 14 through the pull handle 15 to pull the first connecting rod 121 and the buckle 123 to move towards the clip 124, thereby causing the screw 22 and the nut 21 to be pressed together.

[0087] In this process, the first connecting rod 121 moves to cause the first sleeve 1210 to overlap the outside of the second sleeve 1211, and compresses the spring 1212 inside the second sleeve 1211. After the force applied by the traction rope 14 is released, the spring 1212 rebounds and pushes the first sleeve 1210 and the connected first connecting rod 121 and telescopic assembly to reset. Then, step S260 is executed.

[0088] Execution step S260: Start the drive assembly 16, drive the screw assembly to rotate so as to rotate the screw 22 and screw the bolt 20 and nut 21 together.

[0089] The drive assembly 16 sequentially drives the first drive shaft 126, the first gear 127, the second gear 128, the second drive shaft 129, and the buckle 123 to rotate, thereby driving the screw 22 to rotate and engage with the nut 21.

[0090] In this embodiment, if the ventilation shaft 30 is provided with concrete walls on both sides, when constructing the ventilation duct 31, the upper and lower ventilation ducts 31 that need to be connected need to be placed into the ventilation shaft space, and the distance between the outer wall of the ventilation duct 31 and the concrete wall needs to be measured to meet the design requirements. The bolts 20 on both sides of the ventilation duct 31 near the concrete wall are tightened in sequence using installation tools. Then, the bolts 20 on both sides of the outer side of the ventilation duct 31 are tightened using ordinary hand tools. Finally, the construction of the two outer brick walls 50 is completed.

[0091] See Figure 4The diagram shows a schematic of the pre-drilled mounting holes on the ventilation shaft of the present invention. If the ventilation shaft 30 has concrete walls on three sides, the connecting upper and lower ventilation ducts 31 need to be placed into the ventilation shaft space, and the distance between the outer wall of the ventilation duct 31 and the concrete wall needs to be measured to meet design requirements. The narrow space between the ventilation duct 31 and the concrete wall forms a U-shape, requiring mounting holes 34 to be pre-drilled at the corners of the concrete walls. This allows installation tools to pass through the pre-drilled mounting holes 34 and extend into the narrow space 40 to tighten the bolts 20 on the innermost side of the ventilation duct 31 against the concrete wall. Multiple installation tools can be used simultaneously to improve construction efficiency. Afterwards, the installation tools are used to extend into the narrow space 40 to tighten the bolts 20 on both sides of the ventilation duct 31. Then, the bolts 20 on the outer side of the ventilation duct 31 are tightened using ordinary hand tools, finally completing the construction of the outer brick wall 50.

[0092] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A tool for installing bolts in confined spaces, characterized in that, include: A holding rod, one end of which can extend into the interior of a narrow space, and the other end which can be held and moved to adjust the position of the extended section of the holding rod to the bolt hole; A clamping assembly is connected to the end of the extended section on the holding rod, and the clamping assembly can clamp the nut and the screw of the bolt respectively; An internal viewing assembly is connected to the holding rod and is used to display the corresponding positions of the clamping assembly, the bolt, and the bolt hole; A traction rope is provided along the outer wall of the holding rod, and one side of the traction rope is connected to the clamping assembly; A pull handle is provided on the holding rod and is connected to the other side of the traction rope. The pull handle can pull the traction rope to allow the clamping assembly to engage the nut and the screw. A drive assembly is connected to the other end of the holding rod and is connected to the clamping assembly. The drive assembly can drive the clamping assembly to screw the nut and the screw together. The clamping assembly includes: a first link; A screwing assembly, one side of which is connected to the end of the first connecting rod, and the screwing assembly is connected to the driving assembly, and the screwing assembly rotates under the driving force; A latch is provided, which can engage with the screw. The latch is located on the other side of the screwing assembly, and the latch and the screw can rotate together. The second link is arranged opposite to the first link; The clip is connected to the end of the second link and is disposed opposite to the buckle, and the clip can accommodate the nut; A telescopic assembly is connected between the first link and the second link, and can telescopically adjust the distance between the first link and the second link; The telescopic assembly includes: a first sleeve, one side of which is connected to the end of the first connecting rod away from the screwing assembly, and the other side of which is provided as an opening; The second sleeve has one side connected to the end of the second connecting rod away from the card holder, and the other side of the second sleeve is movably connected to the opening of the first sleeve. A spring is disposed inside the second sleeve, and the spring is compressed by the movement of the first sleeve.

2. A tool for installing bolts in confined spaces according to claim 1, characterized in that, The clamping assembly further includes: A protective cover is provided on the outside of the screwing assembly and the buckle.

3. A tool for installing bolts in confined spaces according to claim 1, characterized in that, The screwing assembly includes: A first drive shaft is connected to the drive assembly and rotates under a driving force. The first gear is sleeved on the outside of the first transmission shaft, and the first gear is driven by the first transmission shaft to rotate synchronously. The second gear meshes with the first gear and can rotate under force. The second drive shaft has one side connected to the second gear and the other side connected to the buckle. The second drive shaft can drive the buckle and the screw that is engaged to rotate together.

4. A tool for installing bolts in confined spaces according to claim 1, characterized in that, The first connecting rod is provided with: A retaining ring is used to position the traction rope.

5. A tool for installing bolts in confined spaces according to claim 1, characterized in that, The clamping assembly is provided with a fixing hook, which is used to connect the end of the traction rope.

6. A tool for installing bolts in confined spaces according to claim 1, characterized in that, The internal viewing component includes: A camera, which is connected to the clamping assembly; A fill light is provided, which is positioned adjacent to the camera.

7. A tool for installing bolts in confined spaces according to claim 6, characterized in that, The in-view component also includes: A display screen is mounted on the handle and connected to the camera. The display screen is for viewing by a person to adjust the position of the extended section on the handle.

8. A construction method for installing bolts in a confined space, using the tool for installing bolts in a confined space as described in any one of claims 1-7, characterized in that, Includes the following steps: Connect the upper and lower sections of the air duct inside the air shaft and align the bolt holes of the upper and lower air duct flanges. Place the nut in the holder of the clamping assembly and engage the bolt in the snap fastener of the clamping assembly; Hold the rod and insert the end of the rod on which the clamping assembly is located into the narrow space between the outer wall of the duct and the side wall of the ventilation shaft; The internal viewing component is used to observe whether the screw held by the clamping component passes through the bolt hole on the upper and lower air duct flange correctly; After confirming that the end of the screw passes through the bolt hole, the traction rope is tightened by pulling the handle to pull the first connecting rod and the buckle toward the clip, thereby pressing the screw and the nut together. Start the drive assembly to drive the screwing assembly to rotate, thereby rotating the bolt and screwing the screw rod to the nut.

Images