Bolt connecting tool used in narrow space

Abstract

The utility model provides a bolt connecting tool used in a narrow space. The bolt connecting tool is used for solving the problem that in the prior art, a bolt connecting tool cannot be matched with flange bolts of different sizes. The device comprises a first nut sleeve, a first sleeve fixing piece, a C-shaped connecting rod, a sleeve, a second nut sleeve, a second sleeve fixing piece and a long and thin connecting rod. The first nut sleeve is detachably connected with the first sleeve fixing piece, the second nut sleeve is detachably connected with the second sleeve fixing piece, and the C-shaped connecting rod is detachably connected with the casing pipe, so that when flange nuts with different sizes and flanges with different thicknesses are dealt with, the flange nuts with different sizes and flanges with different thicknesses can be conveniently and quickly dealt with; in the construction process, flange nuts with different sizes or flanges with different thicknesses can be adapted by replacing the first nut sleeve and the second nut sleeve with different sizes or replacing the C-shaped connecting rod, so that the number of tools carried by constructors during construction is reduced, and the burden of the constructors is relieved.

Description

Technical Field

[0001] The utility model belongs to the field of construction tools, in particular to a bolt connection tool used in a narrow space. Background Art

[0002] Air shaft ventilation systems in residential and commercial buildings are large. When constructing these systems, the duct sizes are typically tailored to the shaft size, and the duct connections are often flanged. Currently, to maximize the actual floor space within a home, the common areas are often compressed, resulting in a small gap between the ducts and the shaft walls. This makes subsequent connections difficult during construction, and some bolts near the shaft walls on some ducts cannot be fully installed using traditional tools. This makes construction quality difficult to control and the finished product poor.

[0003] In the prior art, in order to facilitate the installation of ventilation ducts in ventilation shafts, an extended socket wrench for tightening bolts of air duct linings in air shafts has been proposed. This wrench comprises a fixed socket wrench and a movable socket wrench, and an extended rotating rod is rotatably connected to the hollow extension rod, which are mutually positioned and supported. The fixed socket wrench is connected to the flange bolt and rotated, and then the movable socket wrench is used to tighten the bolt. The extended rotating rod and the hollow extension rod serve as an operating extension, allowing the device to be installed in a small space for the installation of large-section air duct angle steel flange bolts. However, because the fixed socket wrench of this wrench scheme is directly welded to the fixed socket and the movable socket wrench and the extended rotating rod are integrally formed, this wrench scheme can only be applied to flange bolts of specific sizes. However, in actual construction, the sizes of ventilation ducts in the same residential building or the same commercial building vary, and therefore the sizes of the flange bolts used for fixing them also vary. If the above scheme is adopted, it will result in the need to carry multiple wrenches for fixing flange bolts of different sizes during construction to smoothly complete the construction, which increases the burden on construction workers and slows down the construction progress. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a bolt connection tool for use in a narrow space, so as to solve the problem that the bolt connection tool in the prior art cannot adapt to flange bolts of different sizes.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a bolt connection tool for use in a narrow space, the bolt connection tool comprising: a first nut sleeve, a first sleeve fixing piece, a C-shaped connecting rod, a sleeve, a second nut sleeve, a second sleeve fixing piece and a slender connecting rod; one end of the first sleeve fixing piece is detachably connected to the first nut sleeve, and the other end is connected to the C-shaped connecting rod; one end of the C-shaped connecting rod away from the first sleeve fixing piece is detachably connected to the sleeve; one end of the second sleeve fixing piece is detachably connected to the second nut sleeve, and the other end is connected to the slender connecting rod; the sleeve is rotatably sleeved on the slender connecting rod; the first nut sleeve and the second nut sleeve are coaxially arranged.

[0006] Optionally, a non-circular groove is provided at the connecting end of the first sleeve fixing piece and the first nut sleeve; a non-circular connecting column is provided at the connecting end of the first nut sleeve and the first sleeve fixing piece; the non-circular connecting column extends into the non-circular groove to fix the first nut sleeve on the first sleeve fixing piece.

[0007] Optionally, a limiting member is further provided at the connecting end of the first sleeve fixing member and the first nut sleeve; a first through hole for the limiting member to pass through is provided on the side wall of the non-circular groove; a first groove for the limiting member to penetrate is provided on the side wall of the non-circular connecting column; the limiting member passes through the first through hole and is connected to the first groove to fix the first nut sleeve on the first sleeve fixing member.

[0008] Optionally, the non-circular groove is a polygonal groove, and the non-circular connecting column is a polygonal connecting column.

[0009] Optionally, a first threaded segment, a first fixing member, a second threaded segment, a second fixing member and a second groove arranged along the extension direction of the sleeve are provided on the outer surface of the sleeve; the first fixing member is threadedly connected to the first threaded segment, and the second fixing member is threadedly connected to the second threaded segment; the thread rotation directions of the first threaded segment and the second threaded segment are opposite; an adapter is provided at the connecting end of the C-shaped connecting rod and the sleeve, and the extension direction of the adapter is the same as the extension direction of the sleeve; a first limiting step and a second limiting step are provided on the connecting side of the adapter and the C-shaped connecting rod; when the C-shaped connecting rod is connected to the sleeve, the adapter is partially located in the second groove, and the first limiting step abuts against the side of the first fixing member, and the second limiting step abuts against the side of the second fixing member.

[0010] Optionally, the diameter of the first thread segment is smaller than the diameter of the second thread segment.

[0011] Optionally, the side surface of the adapter away from the C-shaped connecting rod is arc-shaped.

[0012] Optionally, a polygonal connecting piece for connecting to a wrench is provided at one end of the sleeve away from the first sleeve fixing piece.

[0013] Optionally, the bolt connection tool further comprises an elastic member which is sleeved on the slender connecting rod, one end of the elastic member is connected to an end of the second sleeve fixing member away from the second nut sleeve, and the other end abuts against one end of the sleeve.

[0014] Optionally, a handle is provided at one end of the elongated connecting rod away from the first sleeve fixing member.

[0015] As described above, the utility model provides a bolt connection tool for use in a narrow space, which has at least the following beneficial effects: by setting the first nut sleeve and the first sleeve fixing member to be detachable, and setting the second nut sleeve and the second sleeve fixing member to be detachable, when dealing with flange nuts of different sizes, the first nut sleeve and the second nut sleeve of different sizes can be replaced, thereby achieving the ability to fix flange nuts of different sizes, reducing the number of tools carried by construction workers during construction, and alleviating the burden on construction workers; in addition, the C-type connecting rod and the sleeve are also set to be detachable, so when dealing with flanges of different thicknesses, the distance between the first sleeve fixing member and the second sleeve fixing member can be increased or decreased by replacing the C-type connecting rod to match flanges of different thicknesses, thereby achieving the connection of the two ventilation ducts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a structural schematic diagram of a bolt connection tool used in a narrow space according to the present invention.

[0017] Figure 2 An exploded schematic diagram showing a C-shaped connecting rod, a fiber member and a first nut sleeve of a bolt connection tool used in a narrow space according to the present invention.

[0018] Figure 3 Display as Figure 1 A is an enlarged schematic diagram.

[0019] Figure 4 Shown is a partial structural schematic diagram of a sleeve of a bolt connection tool used in a narrow space according to the present invention. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0021] Please refer to all the following drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by this utility model, should still fall within the scope of the technical content disclosed by this utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0022] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0023] See also Figure 1 The utility model provides a bolt connection tool for use in a narrow space, comprising: a first nut sleeve 1, a first sleeve fixing member 2, a C-shaped connecting rod 3, a sleeve 4, a second nut sleeve 5, a second sleeve fixing member 6, and a slender connecting rod 7; one end of the first sleeve fixing member 2 is detachably connected to the first nut sleeve 1, and the other end is connected to the C-shaped connecting rod 3; the end of the C-shaped connecting rod 3 away from the first sleeve fixing member 2 is detachably connected to the sleeve 4; one end of the second sleeve fixing member 6 is detachably connected to the second nut sleeve 5, and the other end is connected to the slender connecting rod 7; the sleeve 4 is rotatably sleeved on the slender connecting rod 7; the first nut sleeve 1 and the second nut sleeve 5 are coaxially arranged. The first sleeve fixing member can be fixed to the C-shaped connecting rod 3 and the second sleeve fixing member 6 to the slender connecting rod 7 by welding or other means.

[0024] During use, one nut of the flange bolt can be placed in the first nut sleeve 1, and the other nut with the screw can be placed in the second nut sleeve 5. After placement, the bolt connection tool is inserted into the corresponding ventilation pipe connection and the bolt is passed through the corresponding fixing hole. Then, the sleeve 4 is fixed by hand or other tools and the slender connecting rod 7 is pushed to align the screw with the nut set in the first nut sleeve 1. After alignment, the slender connecting rod 7 is rotated to connect the screw and nut, thereby connecting the two ventilation ducts. When dealing with flange nuts of different sizes, the first nut sleeve 1 fixed to the first sleeve fixing member 2 and the second nut sleeve 5 fixed to the second sleeve fixing member 6 can be removed first. Then, the first nut sleeve 1 of the corresponding size can be installed on the first sleeve fixing member, and the second nut sleeve 5 of the corresponding size can be installed on the second sleeve fixing member 6, thereby achieving the fixing of flange nuts of different sizes. In addition, due to the different sizes of the ventilation ducts, the thickness of the flanges connecting the two ventilation ducts is also different. Therefore, in this embodiment, the C-type connecting rod 3 and the sleeve 4 are also set to be detachable, so that when dealing with flanges of different thicknesses, by replacing the C-type connecting rod 3, the distance between the first sleeve fixing member 2 and the second sleeve fixing member 6 can be increased or decreased to match the flanges of different thicknesses, thereby realizing the connection of the two ventilation ducts.

[0025] See also Figure 1 、 2 In one embodiment, a non-circular groove 21 is provided at the connection end between the first sleeve fixing member 2 and the first nut sleeve 1; a non-circular connecting post 11 is provided at the connection end between the first nut sleeve 1 and the first sleeve fixing member 2; the non-circular connecting post 11 extends into the non-circular groove 21 to secure the first nut sleeve 1 to the first sleeve fixing member 2. The non-circular groove 21 can be a polygonal groove, such as a hexagonal groove or a quadrilateral groove, so that relative rotation between the first nut sleeve 1 and the first sleeve fixing member 2 is prevented when the nut is connected to the screw.

[0026] In one embodiment, the non-circular groove 21 and the non-circular connecting column 11 can be interference fit so that the first nut sleeve 1 can be fixedly installed on the first sleeve fixing member 2, preventing the non-circular connection from slipping out of the non-circular groove 21 due to the gravity of the first nut sleeve 1.

[0027] In another embodiment, the non-circular groove 21 and the non-circular connecting column 11 may be loosely fitted. To secure the first nut sleeve 1 to the first sleeve fixing member 2, a stopper 8 may be provided at the connection between the first sleeve fixing member 2 and the first nut sleeve 1. A first through-hole 22 for the stopper 8 to pass through is provided on the sidewall of the non-circular groove 21. A first groove 12 for the stopper 8 to penetrate is provided on the sidewall of the non-circular connecting column 11. The stopper 8 passes through the first through-hole 22 and connects to the first groove 12 to secure the first nut sleeve 1 to the first sleeve fixing member 2. Specifically, the stopper 8 may be a stopper pin.

[0028] In an optional embodiment, the first sleeve fixing member 2 and the second sleeve fixing member 6, as well as the first nut sleeve 1 and the second nut sleeve 5 can be configured to have the same structure to reduce the manufacturing cost of the bolt connection tool. Of course, in other implementations, the first sleeve fixing member 2 and the second sleeve fixing member 6, as well as the first nut sleeve 1 and the second nut sleeve 5 can also be configured to have different structures, and this embodiment does not impose any restrictions on this, as long as the second nut sleeve 5 can be detachably connected to the second sleeve fixing member.

[0029] See also Figure 3 、 4In one embodiment, a first threaded segment 41, a first fixing member 42, a second threaded segment 43, a second fixing member 44 and a second groove 45 arranged along the extension direction of the sleeve 4 are provided on the outer surface of the sleeve 4; the first fixing member 42 is threadedly connected to the first threaded segment 41, and the second fixing member 44 is threadedly connected to the second threaded segment 43; the thread rotation directions of the first threaded segment 41 and the second threaded segment 43 are opposite; the connecting end of the C-shaped connecting rod 3 and the sleeve 4 is provided with an adapter 31, and the extension direction of the adapter 31 is the same as the extension direction of the sleeve 4; a first limiting step 311 and a second limiting step 312 are provided on the connecting side surface of the adapter 31 and the C-shaped connecting rod 3; when the C-shaped connecting rod 3 is connected to the sleeve 4, the adapter part is located in the second groove 45, and the first limiting step 311 abuts against the side surface of the first fixing member 42, and the second limiting step 312 abuts against the side surface of the second fixing member 44. Specifically, the first and second fixing members 44 can be hollow cylindrical structures with internal threads on their inner surfaces. The adapter 31 includes a raised portion and a main body of the adapter 31. The main body of the adapter 31 can be a strip-shaped structure. The raised portion protrudes from the main body of the adapter 31, forming a first stop step 311 and a second stop step 312 with the main body of the adapter 31. The raised portion can be secured to the C-shaped connecting rod 3 by welding or other means. When the adapter 31 is installed in the second groove 45, the raised portion at least partially protrudes from the second groove 45, facilitating connection with the C-shaped connecting rod 3. In addition, when the adapter 31 is installed in the second groove 45, the portion of the adapter 31 body located in the first thread segment 41 is defined as the first connecting segment, and the portion of the adapter 31 located in the second thread segment 43 is defined as the second connecting segment. Twice the thickness dimension of the first connecting segment is smaller than the size of the major diameter minus the minor diameter of the first thread segment 41, and twice the thickness dimension of the second connecting segment is smaller than the size of the major diameter minus the minor diameter of the second thread segment 43, so that after the adapter 31 is set in the second groove 45, the adapter 31 will not interfere with the internal threads of the first fixing member 42 and the second fixing member 44, thereby avoiding affecting the rotation of the first fixing member 42 and the second fixing member 44.

[0030] During use, the adapter 31 can be first placed in the second groove 45, and then the first fixing member 42 and the second fixing member 44 can be rotated simultaneously to move the first fixing member 42 and the second fixing member 44 toward each other, so that one end of the first fixing member 42 abuts against the first limiting step 311, and one end of the second fixing member 44 abuts against the second limiting step 312, thereby fixing the adapter 31 in the second groove 45. In addition, in this embodiment, the thread rotation directions of the first thread segment 41 and the second thread segment 43 are set to be opposite, which can prevent the second fixing member 44 from rotating due to the friction between the second limiting step 312 and the second fixing member 44 when the first fixing member 42 drives the adapter 31 to move closer to the second fixing member 44 when the first fixing member 42 is rotated.

[0031] In one implementation, the diameters of the first thread segment 41 and the second thread segment 43 can be set to be the same. When the diameters of the two are the same, in order to facilitate the installation of the second fixing member 44 on the second thread segment 43, the first thread segment 41 and the second thread segment 43 can be fixedly connected by welding or other means. That is, during installation, the second fixing member 44 is first installed on the second thread segment 43, and then the first thread segment 41 and the second thread segment 43 are fixedly connected by welding or other means. In another embodiment, the diameter of the first thread segment 41 is smaller than the diameter of the second thread segment 43, so as to facilitate the installation of the second fixing member 44 and facilitate the replacement of the second fixing member 44 after the threads of the second fixing member 44 and the second thread segment 43 are threaded.

[0032] In one implementation, the side of the adapter 31 away from the C-shaped connecting rod 3 is arc-shaped, and correspondingly, the bottom of the second groove 45 is also arc-shaped, so as to ensure that the wall thickness of the sleeve 4 where the second groove 45 is set remains consistent, thereby avoiding the uneven wall thickness affecting the strength and durability of the sleeve 4, and even causing the sleeve 4 to break or fail during use.

[0033] See also Figure 1 In one embodiment, a polygonal connector 46 for connecting to a wrench is provided at one end of the sleeve 4 away from the first sleeve fixing member 2, so as to fix the sleeve 4 during use. The polygonal connector 46 can be a nut connected to the sleeve 4 by welding or other means.

[0034] In one embodiment, the bolt connection tool further includes an elastic member 9, which is sleeved on the slender connecting rod 7. One end of the elastic member 9 is connected to the end of the second sleeve fixing member 6 away from the second nut sleeve 5, and the other end abuts one end of the sleeve 4. The elastic member 9 can be a spring. The provision of the elastic member 9 can maintain the distance between the second sleeve fixing member 6 and the sleeve 4 within a preset range when the bolt connection tool is not in use, thereby preventing collision between the second sleeve fixing member 6 and the sleeve 4 during transportation of the bolt connection tool.

[0035] In one embodiment, a handle 71 is provided at one end of the slender connecting rod 7 away from the first sleeve fixing member 2 to facilitate rotation of the slender rod during use.

[0036] In summary, the present invention provides a detachable connection between the first nut sleeve 1 and the first sleeve fixing member 2, and a detachable connection between the second nut sleeve 5 and the second sleeve fixing member 6. When dealing with flange nuts of different sizes, the first nut sleeve 1 and the second nut sleeve 5 of different sizes can be replaced to thereby achieve the ability to fix flange nuts of different sizes, thereby reducing the number of tools carried by construction workers during construction and alleviating the burden on construction workers. In addition, the C-type connecting rod 3 and the sleeve 4 are also provided with a detachable connection. Therefore, when dealing with flanges of different thicknesses, the distance between the first sleeve fixing member 2 and the second sleeve fixing member 6 can be increased or decreased by replacing the C-type connecting rod 3 to match flanges of different thicknesses, thereby achieving the connection of two ventilation ducts. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0037] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A bolt connection tool used in a narrow space, characterized in that: The bolt connection tool comprises: a first nut sleeve, a first sleeve fixing piece, a C-shaped connecting rod, a sleeve, a second nut sleeve, a second sleeve fixing piece and a slender connecting rod; One end of the first sleeve fixing member is detachably connected to the first nut sleeve, and the other end is connected to the C-shaped connecting rod; One end of the C-shaped connecting rod away from the first sleeve fixing member is detachably connected to the sleeve; One end of the second sleeve fixing piece is detachably connected to the second nut sleeve, and the other end is connected to the slender connecting rod; the sleeve is rotatably sleeved on the slender connecting rod; the first nut sleeve and the second nut sleeve are coaxially arranged.

2. A bolt connection tool for use in a narrow space according to claim 1, characterized in that: A non-circular groove is provided at the connecting end of the first sleeve fixing member and the first nut sleeve; A non-circular connecting column is provided at the connecting end of the first nut sleeve and the first sleeve fixing piece; the non-circular connecting column extends into the non-circular groove to fix the first nut sleeve on the first sleeve fixing piece.

3. The bolt connection tool for use in a narrow space according to claim 2, characterized in that: A limiting member is further provided at the connection end between the first sleeve fixing member and the first nut sleeve; A first through hole for the limiting member to pass through is provided on the side wall of the non-circular groove; a first groove for the limiting member to penetrate is provided on the side wall of the non-circular connecting column; The limiting member passes through the first through hole and is connected to the first groove to fix the first nut sleeve on the first sleeve fixing member.

4. The bolt connection tool for use in a narrow space according to claim 3, characterized in that: The non-circular groove is a polygonal groove, and the non-circular connecting column is a polygonal connecting column.

5. The bolt connection tool for use in a narrow space according to claim 1, characterized in that: The outer surface of the sleeve is provided with a first thread segment, a first fixing member, a second thread segment, a second fixing member and a second groove provided along the extension direction of the sleeve; The first fixing member is threadedly connected to the first thread segment, and the second fixing member is threadedly connected to the second thread segment; the first thread segment and the second thread segment have opposite thread rotation directions; The connecting end of the C-shaped connecting rod and the sleeve is provided with an adapter, and the extending direction of the adapter is the same as the extending direction of the sleeve; the connecting side surface of the adapter and the C-shaped connecting rod is provided with a first limiting step and a second limiting step; When the C-shaped connecting rod is connected to the sleeve, the adapter is partially located in the second groove, and the first limiting step abuts against the side of the first fixing member, and the second limiting step abuts against the side of the second fixing member.

6. The bolt connection tool for use in a narrow space according to claim 5, characterized in that: The diameter of the first thread segment is smaller than the diameter of the second thread segment.

7. The bolt connection tool for use in a narrow space according to claim 5, characterized in that: The side surface of the adapter away from the C-shaped connecting rod is arc-shaped.

8. The bolt connection tool for use in a narrow space according to claim 1, characterized in that: A polygonal connecting piece for connecting with a wrench is provided at one end of the sleeve away from the first sleeve fixing piece.

9. The bolt connection tool for use in a narrow space according to claim 1, characterized in that: The bolt connection tool also includes an elastic member, which is sleeved on the slender connecting rod. One end of the elastic member is connected to an end of the second sleeve fixing member away from the second nut sleeve, and the other end abuts against one end of the sleeve.

10. The bolt connection tool for use in a narrow space according to claim 1, characterized in that: A handle is provided at one end of the slender connecting rod away from the first sleeve fixing piece.

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