A bolt tightening tool for a distal slit vertical air duct

Abstract

The present invention relates to a bolt fastening tool for a distal slit vertical air duct, belonging to the technical field of construction engineering. It includes a locking assembly and a connecting assembly. The locking assembly is used to lock bolts at the connection of the air duct. The connecting assembly includes a chain structure with a hollow interior. The chain structure is connected to the locking assembly. The chain structure includes a number of first chain blocks and a number of second chain blocks. The number of first chain blocks are arranged at equal intervals along the direction of the first flexible shaft. A first space is formed between two adjacent first chain blocks. The number of second chain blocks are in one-to-one correspondence and matching with the number of first spaces. Any second chain block is filled in the first space. The first chain blocks and the second chain blocks are hinged to each other. By providing the chain structure, since the chain structure is formed by the mutual hinging of the first chain blocks and the second chain blocks, therefore, this structure can move along the distal slit of a straight line and can also move along the distal slit of a corner, and then convey the locking device to the connection of the corresponding air duct for connection.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and particularly relates to a bolt tightening tool for a distal slit vertical air duct. Background Art

[0002] With the implementation of new fire protection design codes, it is required that the ventilation shafts in the building be lined with air ducts in the ventilation system design. Due to the limitations of the structural form, in actual projects, it is often encountered that one or two side walls of the ventilation shaft are cast-in-place concrete walls, resulting in the inability to tighten the connecting bolts of the air duct on the side close to the structural wall, especially for the air duct with a long side length and a narrow space. Therefore, a bolt tightening tool specifically for the distal slit vertical air duct has emerged.

[0003] For example, the utility model patent with the patent authorization announcement number: CN 210819395 U. This patent discloses a bolt tightening device for an air duct in a narrow space, which includes an installation box, a set of bevel gears connected inside the installation box, a horizontal shaft rod connected to the outer end of the horizontal bevel gear, a vertical shaft rod connected to the end of the vertical bevel gear, an extension rod and a fixing rod connected to the outer end of the horizontal shaft rod, a connecting rod and a bolt socket head connected to the lower end of the vertical shaft rod, and a nut placement member located below the bolt socket head; a lighting device and a micro camera are detachably connected to the bottom surface of the installation box; a reinforcing rod is connected below the installation box on one side of the horizontal shaft rod. By setting the lighting device and the micro camera, it is beneficial for the precise alignment of the bolts; by setting the extension rod and the fixing rod, the construction space is saved; by setting the reinforcing rod, it is beneficial to share the weight of the installation box during construction and reduce the vertical deviation of the installation box during construction; by setting the nut placement member and the limit clamping plate, it is convenient for the alignment and installation of the nuts.

[0004] Based on the retrieval of the above patent authorization announcement number and combined with its deficiencies, it is found that:

[0005] The installation of the air duct is set to fit the building wall surface. Therefore, at the corner of the building, the two sections of the air duct at the building corner will be connected to each other at 90°. At present, the bolt tightening tool for the distal slit air duct, due to the characteristics of its structure, cannot be bent. Therefore, it can only perform bolt connection on the connection of the straight distal slit air duct, but cannot perform bolt connection on the connection of the distal slit air duct with a corner. Summary of the Invention

[0006] To solve the above problems existing in the prior art, the present invention provides a bolt tightening tool for a distal slit vertical air duct, which includes a locking assembly and a connecting assembly. The locking assembly is used to lock bolts at the connection of the air duct. The connecting assembly includes a chain structure with a hollow interior. The chain structure is connected to the locking assembly. The chain structure includes a plurality of first chain blocks and a plurality of second chain blocks. The plurality of first chain blocks are arranged at equal intervals along the direction of the first flexible shaft. A first space is formed between two adjacent first chain blocks. The plurality of second chain blocks are in one-to-one correspondence with the plurality of first spaces. Any second chain block is filled in the first space. The first chain block and the second chain block are hinged to each other. By providing the chain structure, since the chain structure is formed by the mutual hinge of the first chain block and the second chain block, therefore, this structure can move along the distal slit of a straight line and can also move along the distal slit of a corner, and then convey the locking device to the connection of the corresponding air duct for connection, solving the problem that the bolt tightening tool for the current distal slit air duct cannot be bent due to the characteristics of its structure, so it can only perform bolt connection on the connection of the distal slit air duct of a straight line and cannot perform bolt connection on the connection of the distal slit air duct with a corner.

[0007] The object of the present invention can be achieved by the following technical solutions:

[0008] A bolt tightening tool for a distal slit vertical air duct includes a locking assembly and a connecting assembly. The locking assembly is used to lock bolts at the connection of the air duct. The connecting assembly includes a chain structure with a hollow interior. The chain structure is connected to the locking assembly. The chain structure includes a plurality of first chain blocks and a plurality of second chain blocks. The plurality of first chain blocks are arranged at equal intervals along the direction of the air duct. A first space is formed between two adjacent first chain blocks. The plurality of second chain blocks are in one-to-one correspondence with the plurality of first spaces. Any second chain block is filled in the first space. The first chain block and the second chain block are hinged to each other.

[0009] As a preferred technical solution of the present invention, the locking assembly includes a locking housing, a corner turner, a magnetic sleeve and a nut sleeve arranged coaxially. A connecting space is provided between the magnetic sleeve and the nut sleeve. The connection of the air duct is located in the connecting space. A rotatable first rotating shaft is provided in the locking housing. Two ends of the corner turner are coaxially connected to the magnetic sleeve and the first rotating shaft respectively.

[0010] As a preferred technical solution of the present invention, the locking assembly further includes a wire winding wheel and a wire rope. A rotatable second rotating shaft is provided in the locking housing. The second rotating shaft is arranged parallel to the first rotating shaft. The wire winding wheel is coaxially sleeved on the second rotating shaft. Two ends of the wire rope are respectively connected to the wire winding wheel and the nut sleeve.

[0011] As a preferred technical solution of the present invention, the connection component further includes a first flexible shaft and a second flexible shaft. Both the first flexible shaft and the second flexible shaft are arranged inside the chain structure, and both flexible shafts are bent along the arrangement direction of the chain structure. One end of the first flexible shaft is coaxially connected to the first rotating shaft, and one end of the second flexible shaft is coaxially connected to the second rotating shaft.

[0012] As a preferred technical solution of the present invention, it further includes an operation component. The operation component includes a ratchet unit and a knob. The ratchet unit is coaxially arranged at the other end of the second flexible shaft, and the knob is coaxially arranged with the ratchet unit.

[0013] As a preferred technical solution of the present invention, it further includes a visual component. The visual component includes a display screen frame, a display screen and an endoscope. The display screen frame is arranged at the top of the end of the chain structure. The display screen is arranged on the display screen frame. The endoscope is communicatively connected to the display screen, and the endoscope is arranged at the top of the locking housing.

[0014] As a preferred technical solution of the present invention, the locking component further includes a moving rod and a return spring. The locking housing is provided with a through hole that cooperates with the moving rod. The moving rod moves along the direction of the through hole. The other end of the moving rod is connected to the nut sleeve. The return spring is sleeved on the moving rod, and both ends of the return spring are respectively connected to the nut sleeve and the locking housing.

[0015] As a preferred technical solution of the present invention, the angle changer includes a first bevel gear and a second bevel gear. The first bevel gear and the second bevel gear are perpendicularly driven. The first bevel gear is coaxially connected to the first rotating shaft, and the second bevel gear is coaxially connected to the magnetic sleeve.

[0016] As a preferred technical solution of the present invention, the width of the chain structure is equal to the width of the slit.

[0017] As a preferred technical solution of the present invention, it further includes a second connection component. The second connection component is used to replace the connection component. The second connection component includes a connection housing with a hollow interior, a first rigid shaft and a second rigid shaft. The connection housing replaces the chain structure, the first rigid shaft replaces the first flexible shaft, and the second rigid shaft replaces the second flexible shaft.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a bolt fastening tool for a distal slit vertical air duct, which includes a locking assembly and a connecting assembly. The locking assembly is used to lock bolts at the connection of the air ducts. The connecting assembly includes a chain structure with a hollow interior. The chain structure is connected to the locking assembly. The chain structure includes a plurality of first chain blocks and a plurality of second chain blocks. The plurality of first chain blocks are arranged at equal intervals along the direction of the first flexible shaft. A first space is formed between two adjacent first chain blocks. The plurality of second chain blocks are in one-to-one correspondence with the plurality of first spaces. Any second chain block is filled in the first space. The first chain blocks and the second chain blocks are hinged to each other. By providing the chain structure, since the chain structure is formed by hinging the first chain blocks and the second chain blocks to each other, this structure can move along the distal slit of a straight line and can also move along the distal slit of a corner, thereby transporting the locking device to the connection of the corresponding air duct for connection, solving the problem that the existing bolt fastening tool for a distal slit air duct cannot be bent due to the characteristics of its structure, so it can only perform bolt connection on the connection of a straight distal slit air duct and cannot perform bolt connection on the connection of a distal slit air duct with a corner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 It is an overall view of a bolt fastening tool for a distal slit vertical air duct according to the present invention;

[0022] Figure 2 It is a view of the locking assembly of a bolt fastening tool for a distal slit vertical air duct according to the present invention;

[0023] Figure 3 It is a view of a second connecting assembly of a bolt fastening tool for a distal slit vertical air duct according to the present invention;

[0024] Figure 4 It is a view of the connecting assembly of a bolt fastening tool for a distal slit vertical air duct according to the present invention;

[0025] Figure 5 It is a side view of the connecting assembly of a bolt fastening tool for a distal slit vertical air duct according to the present invention;

[0026] Figure 6 It is a bending view of the connecting assembly of a bolt fastening tool for a distal slit vertical air duct according to the present invention.

[0027] MAIN SYMBOL DESCRIPTION

[0028] In the figure: 1. Chain structure; 101. First chain block; 102. Second chain block; 2. First flexible shaft; 3. Second flexible shaft; 4. Locking housing; 401. First rotating shaft; 402. Second rotating shaft; 5. Angle changer; 501. First bevel gear; 502. Second bevel gear; 6. Magnetic sleeve; 7. Nut sleeve; 8. Winding wheel; 9. Moving rod; 10. Return spring; 12. Ratchet unit; 13. Knob; 14. Display screen holder; 15. Display screen; 16. Endoscope; 17. Connecting housing; 18. First rigid shaft; 19. Second rigid shaft. Detailed implementation manner

[0029] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, describe in detail the specific implementation manner, structure, features and their effects of the present invention.

[0030] Please refer to Figure 1-6 , this embodiment provides a bolt tightening tool for a distal slit vertical air duct, including a locking assembly and a connecting assembly. The function of the locking assembly is that when the locking assembly reaches the connection of the air duct, at this time, the locking assembly locks the bolt and nut inside the connection of the air duct. The function of the connecting assembly is to transport the locking assembly to the connection of the air duct. The connecting assembly includes a chain structure 1 with a hollow interior. The chain structure 1 is connected to the locking assembly. The chain structure 1 includes a number of first chain blocks 101 and a number of second chain blocks 102. The number of first chain blocks 101 are arranged at equal intervals along the setting direction of the air duct. A first space is formed between two adjacent first chain blocks 101. The number of second chain blocks 102 are in one-to-one correspondence and match with the number of first spaces. Any second chain block 102 is filled in the first space. The first chain block 101 and the second chain block 102 are hinged to each other. By providing the chain structure 1, since the chain structure 1 is formed by the mutual hinge of the first chain block 101 and the second chain block 102, therefore, this structure can move along the distal slit in a straight line and can also move along the distal slit with a corner, thereby transporting the locking device to the corresponding connection of the air duct for connection, solving the problem that the existing bolt tightening tool for the distal slit air duct, due to the characteristics of its structure, cannot be bent, so it can only perform bolt connection on the connection of the straight distal slit air duct, but cannot perform bolt connection on the connection of the distal slit air duct with a corner.

[0031] Here, it should be noted that in order to ensure the accuracy of the movement of the device in this solution in a narrow space, the width of the chain structure 1 in this solution is equal to the width of the slit, so that the chain structure 1 in this solution can adapt to the corner structure of the slit during the process of moving along the slit, and the output end of the locking assembly and the connection of the air duct are also on the same vertical plane.

[0032] The locking assembly of this solution includes a locking housing 4, a corner adapter 5, a magnet sleeve 6 and a nut sleeve 7 arranged coaxially. There is a certain gap between the magnet sleeve 6 and the nut sleeve 7, which is defined as the connection space in this solution. The connection part of the air duct is located within the connection space. A rotatable first rotating shaft 401 is provided within the locking housing 4. The two ends of the corner adapter 5 are coaxially connected to the magnet sleeve 6 and the first rotating shaft 401 respectively. Here, it should be specifically noted that the corner adapter 5 of this solution includes a first bevel gear 501 and a second bevel gear 502, and the first bevel gear 501 and the second bevel gear 502 are perpendicularly driven. The first bevel gear 501 is coaxially connected to the first rotating shaft 401 and rotates following the rotation of the first rotating shaft 401. The second bevel gear 502 is coaxially connected to the magnet sleeve 6, and the magnet sleeve 6 rotates following the rotation of the second bevel gear 502. A magnetic block is provided within the magnet sleeve 6 for adsorbing the bolt, and a nut is connected to the top of the nut sleeve 7.

[0033] It should be noted here that the magnet sleeve 6 of this solution includes a first sleeve housing and a magnetic block. The sleeve housing is coaxially connected to the second bevel gear 502, and the magnetic block is arranged within the sleeve housing for magnetic connection with the bolt. The nut sleeve 7 includes a sleeve bottom plate, a second sleeve housing and a low-elasticity spring. The low-elasticity housing is coaxially arranged within the second sleeve housing, the second sleeve housing is arranged on the sleeve bottom plate, and the nut is placed on the low-elasticity spring. At this time, the setting height of the nut is higher than the height of the second sleeve housing.

[0034] Furthermore, the locking assembly of this solution further includes a wire reel 8 and a wire rope. A rotatable second rotating shaft 402 is provided within the locking housing 4. The second rotating shaft 402 is arranged parallel to the first rotating shaft 401. The wire reel 8 is coaxially sleeved on the second rotating shaft 402. The two ends of the wire rope are respectively connected to the wire reel 8 and the sleeve bottom plate of the nut sleeve 7. It is worth noting that when the locking assembly of this solution reaches the connection part of the air duct, the second rotating shaft 402 starts to rotate clockwise, driving the wire reel 8 to rotate clockwise together with the second rotating shaft 402. The wire rope starts to wind around the wire reel 8, and the nut sleeve 7 starts to move upward, so that the nut and the bolt are connected to each other. At this time, the first rotating shaft 401 starts to rotate, and the rotation of the first rotating shaft 401 drives the corner adapter 5 to start rotating, and further causes the magnet sleeve 6 to rotate following the rotation of the corner adapter 5, realizing the fastening of the bolt and the nut at the connection part of the air duct.

[0035] The connecting components of this solution further include a first flexible shaft 2 and a second flexible shaft 3. Both the first flexible shaft 2 and the second flexible shaft 3 are arranged inside the chain structure 1. The two flexible shafts are bent along the arrangement direction of the chain structure 1. One end of the first flexible shaft 2 is coaxially connected to the first rotating shaft 401, and one end of the second flexible shaft 3 is coaxially connected to the second rotating shaft 402. It should be noted here that both the first flexible shaft 2 and the second flexible shaft 3 of this solution are made of deformable materials, so that both the first flexible shaft 2 and the second flexible shaft 3 are bent along the arrangement direction of the chain structure 1.

[0036] Furthermore, this solution also includes an operating component. The operating component includes a ratchet unit 12 and a knob 13. The ratchet unit 12 is coaxially arranged at the other end of the second flexible shaft 3, and the knob 13 is coaxially arranged with the ratchet unit 12. It should be noted here that the ratchet unit 12 of this solution is a structure that can only transmit force and motion in a specific direction. When the operator rotates the knob 13 clockwise, it drives the ratchet unit 12 and the connected second flexible shaft 3 to rotate clockwise together, and then makes the second rotating shaft 402 rotate clockwise. During this period, even if the operator accidentally rotates the knob 13 in the reverse direction, due to the existence of the ratchet unit 12, this operation will not cause the second flexible shaft 3 to rotate counterclockwise, or even if the second flexible shaft 3 itself has a tendency to rotate in the reverse direction, due to the existence of the ratchet unit 12, the second flexible shaft 3 will not rotate in the reverse direction. In addition, the ratchet unit 12 of this device is an adjustable two-way ratchet. By adjusting the blocking direction of the ratchet, the knob 13 can only rotate clockwise or counterclockwise to effectively drive the ratchet unit 12 to rotate, and then drive the second flexible shaft 3 to rotate forward and backward. In addition, the other end of the first flexible shaft 2 of this solution is connected to an electric screwdriver. By the rotation of the electric screwdriver, the first flexible shaft 2 is driven to rotate, and then the magnetic sleeve 6 is driven to rotate by the angle converter 5.

[0037] This solution also includes a vision component. The vision component includes a display screen frame 14, a display screen 15 and an endoscope 16. The display screen 15 is arranged at the top of the end of the chain structure 1. The display screen 15 is arranged on the display screen 15. The endoscope 16 is communicatively connected to the display screen 15. The endoscope 16 is arranged at the top of the end of the chain structure 1. The endoscope 16 is used to photograph the positions of the bolts and nuts and the connection position of the air duct. The operator can judge whether the positions of the bolts and nuts on the locking component and the connection position of the air duct are on the same vertical line through the photographed image on the display screen 15.

[0038] Furthermore, the locking assembly of this solution further includes a moving rod 9 and a return spring 10. The locking housing 4 is provided with a through hole that cooperates with the moving rod 9. The moving rod 9 moves along the direction of the through hole. The other end of the moving rod 9 is connected to the sleeve bottom plate of the nut sleeve 7. The return spring 10 is sleeved on the moving rod 9. The two ends of the return spring 10 are respectively connected to the nut sleeve 7 and the locking housing 4. By providing the return spring 10, after the bolt and the nut are locked at the connection of the air duct, at this time, adjust the blocking direction of the ratchet unit 12. By rotating the knob 13 counterclockwise, the second flexible shaft 3 is rotated counterclockwise, thereby driving the winding wheel 8 to rotate counterclockwise. Then, under the action of the return spring 10, the nut sleeve 7 returns to its original position again, completing the entire bolt tightening process.

[0039] Further description is as follows. There are two sets of connection assemblies in this solution. The other set of connection assembly is defined as the second connection assembly in this solution. The second connection assembly includes a hollow connection housing 17, a first rigid shaft 18, and a second rigid shaft 19. The connection housing 17 replaces the chain structure 1, the first rigid shaft 18 replaces the first flexible shaft 2, and the second rigid shaft 19 replaces the second flexible shaft 3. In addition, it is worth noting that the connection housing 17 is made of steel. By providing the second connection assembly to replace the connection assembly, the device of this solution can also tighten the bolts at the connection of the air duct in a straight slit. To sum up, in this solution, by providing a connection assembly, and the connection assembly is provided with a chain structure 1. Since the chain structure 1 is formed by hinging the first chain block 101 and the second chain block 102 to each other, this structure can move along the distal slit of the straight line and can also move along the distal slit of the corner, thereby transporting the locking device to the corresponding connection of the air duct for connection, solving the problem that the bolt tightening tool for the distal slit air duct at present, due to the characteristics of its structure, cannot be bent, so it can only bolt-connect the connection of the straight distal slit air duct and cannot bolt-connect the connection of the distal slit air duct with a corner. In addition, in this solution, the connection assembly can also be replaced with the second connection assembly. By providing the second connection assembly, this solution can move along the distal slit of the straight line, thereby transporting the locking device to the corresponding connection of the air duct for connection.

[0040] In addition, the second connection assembly further includes a number of bearings. The number of bearings are equidistantly arranged on the first rigid shaft 18 and the second rigid shaft 19 to facilitate the rotation of the first rigid shaft 18 and the second rigid shaft 19.

[0041] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A bolt tightening tool for a distal slit vertical air duct, characterized in that: It includes a locking component and a connecting component. The locking component is used to lock bolts at the air duct connection. The connecting component includes a chain structure with a hollow interior. The chain structure is connected to the locking component. The chain structure includes a number of first chain blocks and a number of second chain blocks. The number of first chain blocks are arranged at equal intervals along the direction of the air duct. A first space is formed between two adjacent first chain blocks. The number of second chain blocks are in one-to-one correspondence with the number of first spaces. Any one of the second chain blocks is filled in the first space. The first chain block and the second chain block are hinged to each other; The locking component includes a locking housing, a corner changer, a coaxially arranged magnetic sleeve and a nut sleeve. A connecting space is provided between the magnetic sleeve and the nut sleeve. The connection of the air duct is located in the connecting space. A rotatable first rotating shaft is provided in the locking housing. Two ends of the corner changer are coaxially connected to the magnetic sleeve and the first rotating shaft respectively; The locking component further includes a wire winding wheel and a wire rope. A rotatable second rotating shaft is provided in the locking housing. The second rotating shaft is arranged parallel to the first rotating shaft. The wire winding wheel is coaxially sleeved on the second rotating shaft. Two ends of the wire rope are respectively connected to the wire winding wheel and the nut sleeve; The connecting component further includes a first flexible shaft and a second flexible shaft. The first flexible shaft and the second flexible shaft are both arranged in the chain structure. Both flexible shafts are bent along the arrangement direction of the chain structure. One end of the first flexible shaft is coaxially connected to the first rotating shaft. One end of the second flexible shaft is coaxially connected to the second rotating shaft; It further includes an operating component. The operating component includes a ratchet unit and a knob. The ratchet unit is coaxially arranged at the other end of the second flexible shaft. The knob is coaxially arranged with the ratchet unit.

2. The bolt tightening tool for a distal slit vertical air duct according to claim 1, characterized in that: It further includes a visual component. The visual component includes a display screen frame, a display screen and an endoscope. The display screen frame is arranged at the top of the end of the chain structure. The display screen is arranged on the display screen frame. The endoscope is communicatively connected to the display screen. The endoscope is arranged at the top of the locking housing.

3. The bolt fastening tool for the distal slit vertical air duct according to claim 1, characterized in that: The locking component further includes a moving rod and a return spring. The locking housing is provided with a through hole that cooperates with the moving rod. The moving rod moves along the direction of the through hole. The other end of the moving rod is connected to the nut sleeve. The return spring is sleeved on the moving rod. Two ends of the return spring are respectively connected to the nut sleeve and the locking housing.

4. A bolt tightening tool for a distal slit vertical air duct according to claim 1, characterized in that: The corner changer includes a first bevel gear and a second bevel gear. The first bevel gear and the second bevel gear are perpendicularly driven. The first bevel gear is coaxially connected to the first rotating shaft. The second bevel gear is coaxially connected to the magnetic sleeve.

5. A bolt tightening tool for a distal slit vertical air duct according to claim 1, characterized in that: The width of the chain structure is equal to the width of the slit.

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