Bolt fastening device

Abstract

The utility model relates to the technical field of bolt fastening, and provides a bolt fastening device. The bolt fastening device comprises a shell, a transmission assembly, a bolt fastening piece and a driving shaft assembly. A cavity is formed in the shell, the transmission assembly is arranged in the cavity and connected with the shell, and the bolt fastener is connected with the transmission assembly. The driving shaft assembly comprises a first connecting shaft and a second connecting shaft, the first end of the first connecting shaft is connected with the transmission assembly so that the first connecting shaft can drive the transmission assembly to rotate, and the second connecting shaft is connected with the second end of the first connecting shaft. According to the bolt fastening device provided by the utility model, a bolt in a narrow space can be effectively fastened, a worker does not need to enter the narrow space to fasten the bolt, and the convenience of fastening the bolt in the narrow space is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt fastening, in particular to a bolt fastening device. Background Art

[0002] In the construction industry, bolts are usually tightened using manual or electric tools. However, when the items to be installed on site are close to the ceiling or wall, the manual working surface is narrow, making it difficult to tighten bolts with traditional tools, and it is also difficult to check the tightening of bolts in narrow spaces. Utility Model Content

[0003] The utility model aims to solve at least one of the problems existing in the related art. To this end, the utility model proposes a bolt fastening device, which can effectively fasten bolts in a narrow space without requiring workers to enter the narrow space to fasten the bolts, thereby effectively improving the convenience of fastening bolts in a narrow space.

[0004] The utility model provides a bolt fastening device, comprising:

[0005] A shell body having a cavity formed therein;

[0006] A transmission assembly, disposed in the cavity and connected to the housing;

[0007] A bolt fastener connected to the transmission assembly;

[0008] The driving shaft assembly includes a first connecting shaft and a second connecting shaft. The first end of the first connecting shaft is connected to the transmission assembly to drive the transmission assembly to rotate, and the second connecting shaft is connected to the second end of the first connecting shaft.

[0009] According to a bolt fastening device provided in an embodiment of the utility model, the driving shaft assembly includes multiple second connecting shafts, and the multiple second connecting shafts are detachably connected end to end in sequence, and the second connecting shaft close to the first connecting shaft is detachably connected to the second end of the first connecting shaft.

[0010] According to a bolt fastening device provided in an embodiment of the utility model, the first connecting shaft is a telescopic shaft, the first end of the telescopic shaft is connected to the transmission assembly, and the second end of the telescopic shaft is suitable for telescoping along the length direction of the telescopic shaft to change the distance between the second end of the telescopic shaft and the transmission assembly.

[0011] According to a bolt fastening device provided by an embodiment of the utility model, a connecting piece is provided at the second end of the driving shaft assembly, and the connecting piece is suitable for connecting a driving tool and the driving shaft assembly.

[0012] According to a bolt fastening device provided by an embodiment of the utility model, the transmission assembly includes a driving gear and a driven gear meshing with each other, the driving gear is connected to the first connecting shaft, and the driven gear is connected to the bolt fastener.

[0013] According to a bolt fastening device provided by an embodiment of the utility model, a preset angle is formed between the driving gear and the driven gear.

[0014] According to a bolt fastening device provided by an embodiment of the utility model, a clamping piece is provided on a side of the bolt fastener facing away from the driven gear.

[0015] A bolt fastening device provided according to an embodiment of the utility model further includes:

[0016] A protective sleeve is connected to the housing, and the protective sleeve is sleeved on the driving shaft assembly.

[0017] A bolt fastening device according to an embodiment of the utility model further includes:

[0018] A support frame is connected to the housing, the support frame is connected to the second end of the driving shaft assembly, and the support frame is used to support the driving shaft assembly.

[0019] According to a bolt fastening device provided by an embodiment of the utility model, the support frame includes a support plate and a plurality of columns, the support plate is connected to the driving shaft assembly, and the columns are spaced apart and arranged on a side of the support plate away from the driving shaft assembly.

[0020] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0021] According to the bolt fastening device provided by the embodiment of the utility model, the second connecting shaft is connected to the first connecting shaft to adjust the overall length of the driving shaft assembly, so that the distance between the second end of the driving shaft assembly and the transmission assembly can be adjusted according to the actual needs on site. When it is necessary to fasten the bolts in a narrow space, the staff only needs to adjust the overall length of the driving shaft assembly, extend the bolt fastener into the narrow space and connect it with the bolt, and then drive the second connecting shaft and the first connecting shaft to rotate, drive the transmission assembly to rotate, so that the bolt fastener rotates, thereby fastening the bolts in the narrow space without the need for the staff to enter the narrow space to fasten the bolts, effectively improving the convenience of fastening the bolts in the narrow space and improving the efficiency of fastening the bolts in the narrow space.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the bolt fastening device provided by the embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the driving shaft assembly provided by an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1. Shell; 11. Cavity; 12. Protective sleeve;

[0028] 2. Transmission assembly; 21. Driving gear; 22. Driven gear; 23. Driven shaft;

[0029] 3. Bolt fasteners; 31. Clamping parts;

[0030] 4. driving shaft assembly; 41. first connecting shaft; 411. telescopic shaft; 42. second connecting shaft. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0032] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] Combine the following Figure 1 and Figure 2 The bolt fastening device provided by the embodiment of the utility model is described.

[0037] Figure 1 The three-dimensional structural diagram of the bolt fastening device provided by the embodiment of the utility model is illustrated. Figure 2 The schematic diagram of the structure of the driving shaft assembly provided by the embodiment of the utility model is illustrated as follows: Figure 1 and Figure 2As shown, the bolt fastening device includes a housing 1, a transmission assembly 2, a bolt fastener 3 and a driving shaft assembly 4. A cavity 11 is formed inside the housing 1, the transmission assembly 2 is arranged in the cavity 11, and the transmission assembly 2 is connected to the housing 1, and the bolt fastener 3 is connected to the transmission assembly 2. The driving shaft assembly 4 includes a first connecting shaft 41 and a second connecting shaft 42, and the first end of the first connecting shaft 41 is connected to the transmission assembly 2 so that the first connecting shaft 41 drives the transmission assembly 2 to rotate. The second connecting shaft 42 is connected to the second end of the first connecting shaft 41.

[0038] According to the bolt fastening device provided by the embodiment of the utility model, the second connecting shaft 42 is connected to the first connecting shaft 41 to adjust the overall length of the driving shaft assembly 4, so that the distance between the second end of the driving shaft assembly 4 and the transmission assembly 2 can be adjusted according to the actual needs on site. Then, when it is necessary to fasten the bolts in a narrow space, the staff only needs to adjust the overall length of the driving shaft assembly 4, extend the bolt fastener 3 into the narrow space and connect it with the bolt, and then drive the second connecting shaft 42 and the first connecting shaft 41 to rotate, drive the transmission assembly 2 to rotate, so that the bolt fastener 3 rotates, thereby fastening the bolts in the narrow space without the need for the staff to enter the narrow space to fasten the bolts, effectively improving the convenience of fastening the bolts in the narrow space and improving the efficiency of fastening the bolts in the narrow space.

[0039] In the embodiment of the utility model, the driving shaft assembly includes a plurality of second connecting shafts 42, and the plurality of second connecting shafts 42 are detachably connected end to end in sequence, and the second connecting shaft 42 close to the first connecting shaft 41 is detachably connected to the second end of the first connecting shaft 41. Then, by adjusting the number of the second connecting shafts 42 connected to the first connecting shaft 41, the length of the driving shaft assembly 4 can be further adjusted, so that the driving shaft assembly 4 can adapt to the length of the narrow space, thereby improving the adaptability of the driving shaft assembly 4 to the bolt position in the narrow space.

[0040] Further, in order to realize the detachable connection between the first connecting shaft 41 and the second connecting shaft 42 so as to adjust the overall length of the driving shaft assembly 4, the connection between the first connecting shaft 41 and the second connecting shaft 42 may be in any of the following ways:

[0041] In the first connection mode, the first connection shaft 41 is threadedly connected to the second connection shaft 42. Specifically, the second end of the first connection shaft 41 is provided with an external thread, and the first end of the second connection shaft 42 is provided with an internal thread. The second end of the first connection shaft 41 and the first end of the second connection shaft 42 are matched with each other through the external thread and the internal thread to realize the detachable connection between the first connection shaft 41 and the second connection shaft 42, so as to transfer the operating working surface of the driving transmission assembly 2 to the second connection shaft 42.

[0042] Of course, an internal thread may be provided at the second end of the first connecting shaft 41, and an external thread may be provided at the first end of the second connecting shaft 42, so as to realize a detachable connection between the first connecting shaft 41 and the second connecting shaft 42. External threads or internal threads may also be provided at the second end of the first connecting shaft 41 and the first end of the second connecting shaft 42, and the first connecting shaft 41 and the second connecting shaft 42 may be connected by nuts or stud bolts.

[0043] The second connection mode is that the first connecting shaft 41 is plug-connected with the second connecting shaft 42. Specifically, the second connecting shaft 42 is a hollow shaft, and the second end of the first connecting shaft 41 is inserted into the second connecting shaft 42 to achieve a detachable connection between the first connecting shaft 41 and the second connecting shaft 42. The inner hole of the second connecting shaft 42 is interference-fitted with the first connecting shaft 41 to ensure that when the first connecting shaft 41 is inserted into the second connecting shaft 42, the second connecting shaft 42 is stably connected to the first connecting shaft 41 and does not disengage.

[0044] It should be noted here that, in this embodiment, the side surface of the second connecting shaft 42 may also be formed with multiple pin holes arranged at intervals, and a spring pin is provided at the second end of the first connecting shaft 41, so that the first connecting shaft 41 can be fixed in the second connecting shaft 42 through the cooperation between the spring pin and the pin hole.

[0045] It should also be noted that, in this embodiment, the connection mode between the plurality of second connecting shafts 42 is the same as the connection mode between the first connecting shaft 41 and the second connecting shaft 42, so as to simplify the assembly complexity between the plurality of second connecting shafts 42. When the first connecting shaft 41 is threadedly connected with the second connecting shaft 42, the plurality of second connecting shafts 42 are also threadedly matched; when the first connecting shaft 41 is plug-connected with the second connecting shaft 42, the plurality of second connecting shafts 42 are also plug-matched.

[0046] Furthermore, the first connecting shaft 41 is a telescopic shaft 411, the first end of the telescopic shaft 411 is connected to the transmission assembly 2, and the second end of the telescopic shaft 411 is adapted to be telescopic along the length direction of the telescopic shaft 411 to change the distance between the second end of the telescopic shaft 411 and the transmission assembly 2. After the first connecting shaft 41 and the plurality of second connecting shafts 42 are connected, the telescopic length of the telescopic shaft 411 can be adjusted to change the distance between the second end of the telescopic shaft 411 and the transmission assembly 2, thereby achieving fine adjustment of the length of the driving shaft assembly 4. When the bolt fastener 3 is extended into a narrow space, if the length of the driving shaft assembly 4 cannot fully adapt the bolt fastener 3 to the position of the bolt, the telescopic length of the telescopic shaft 411 can be adjusted to ensure that the bolt fastener 3 can adapt to the actual position of the bolt to be tightened, thereby improving the applicability of the bolt tightening device in application.

[0047] In addition, if the distance between the bolt position and the operating work surface in the narrow space is less than the longest telescopic length of the telescopic shaft 411 , the length of the first connecting shaft 41 can be directly adjusted to a suitable length without splicing the second connecting shaft 42 .

[0048] It should be noted here that, in this embodiment, the second connecting shaft 42 away from the first connecting shaft 41 can also be configured as a telescopic shaft 411 to improve the convenience of fine-tuning the length of the driving shaft assembly 4.

[0049] In the embodiment of the utility model, the second end of the driving shaft assembly 4 is provided with a connecting piece, and the connecting piece is suitable for connecting the driving tool and the driving shaft assembly 4. By connecting the driving tool and the driving shaft assembly 4 with the connecting piece, the driving tool drives the driving shaft assembly 4 to rotate, thereby driving the transmission assembly 2 to rotate, so that the transmission assembly 2 drives the bolt fastener 3 to rotate, thereby completing the tightening of the bolt in the narrow space.

[0050] Specifically, in this embodiment, when the first connecting shaft 41 and the second connecting shaft 42 are threadedly connected, the connecting piece may be a nut, and the driving tool may be a fastening tool such as an electric wrench or a manual wrench. The nut is matched with the external thread at the second end of the first connecting shaft 41 or the external thread at the second end of the second connecting shaft 42, and the driving tool is connected to the nut to drive the nut and the driving shaft assembly 4 to rotate.

[0051] When the first connecting shaft 41 and the second connecting shaft 42 are plug-connected, the connecting member may be a coupling, and the driving tool may be a driving member such as a motor. The output shaft of the motor is connected to the second end of the first connecting shaft 41 or the second end of the second connecting shaft 42 through the coupling. The rotation speed of the output shaft of the motor is controlled to drive the driving shaft assembly 4 to rotate.

[0052] In the embodiments of the present invention, Figure 1 and Figure 2 As shown, the transmission assembly 2 includes a driving gear 21 and a driven gear 22 that mesh with each other. The driving gear 21 is connected to the first connecting shaft 41. In this embodiment, the first connecting shaft 41 is inserted into the driving gear 21. The driven gear 22 is connected to the bolt fastener 3. Then, when the first connecting shaft 41 rotates, the first connecting shaft 41 drives the driving gear 21 to rotate, and then the mutual meshing between the driving gear 21 and the driven gear 22 is used to transmit the rotation of the driving gear 21 to the driven gear 22, thereby driving the bolt fastener 3 to rotate, so as to use the bolt fastener 3 to complete the tightening of the bolt in the narrow space.

[0053] It should be noted that, in this embodiment, the driven gear 22 and the bolt fastener 3 are connected via the driven shaft 23 to achieve transmission between the driven gear 22 and the bolt fastener 3. Of course, the bolt fastener 3 can also be directly connected to the driven gear 22 to improve the transmission efficiency between the driven gear 22 and the bolt fastener 3.

[0054] Furthermore, if Figure 1 and Figure 2 As shown, a preset angle is formed between the driving gear 21 and the driven gear 22 to achieve the change in the direction of the transmission force without changing the transmission ratio between the driving gear 21 and the driven gear 22, so that the structure between the driving gear 21 and the driven gear 22 is compact, so as to reduce the size of the housing 1, thereby reducing the size of the bolt fastening device, and thus facilitating the fastening of bolts in a narrow space.

[0055] Preferably, in this embodiment, the driving gear 21 and the driven gear 22 are mutually meshing bevel gears, that is, at this time, the preset angle between the driving gear 21 and the driven gear 22 is 90°.

[0056] In the embodiments of the present invention, Figure 1 and Figure 2 As shown, the bolt fastening device also includes a protective sleeve 12, which is connected to the housing 1 and sleeved on the driving shaft assembly 4. The inner cavity of the housing 1 is separated from the external air by the protective sleeve 12 to prevent dust from entering the inner cavity of the housing 1, thereby preventing dust from affecting the normal operation of the driving gear 21.

[0057] It should be noted here that the protective sleeve 12 can also be formed integrally with the housing 1 to reduce the number of components of the bolt fastening device.

[0058] It should also be noted that, in this embodiment, a plug hole is formed on the side of the housing 1, the protective sleeve 12 is inserted into the plug hole, a boss structure is formed on the side of the driving gear 21 facing the driving shaft assembly 4, and the protective sleeve 12 is sleeved on the boss structure. By sleeved the protective sleeve 12 on the driving gear 21, the driving gear 21 is further separated from the external air, thereby preventing dust from entering the inner cavity of the housing 1 from the driving shaft assembly 4.

[0059] In the embodiment of the utility model, a clamping member 31 is provided on the side of the bolt fastener 3 away from the driven gear 22. When the bolt fastener 3 is extended into the narrow space, the clamping member 31 clamps the hexagonal head of the bolt to be tightened, and the driving shaft assembly 4 drives the transmission assembly 2 and the bolt fastener 3 to rotate, so as to tighten the bolt.

[0060] It should be noted that in this embodiment, the opening angle of the clamping member 31 is adjustable to accommodate bolts of different sizes. The structure of the clamping member 31 is an existing structure and will not be described in detail here. For details, please refer to the sleeve structure for fixing the bolts in the electric wrench.

[0061] In an embodiment of the utility model, the bolt fastening device further comprises a support frame, which is connected to the housing 1 and connected to the second end of the driving shaft assembly 4, and the support frame is used to support the driving shaft assembly 4. The driving shaft assembly 4 is supported by the support frame, so that the bolt fastening device can be placed vertically without artificial support of the bolt fastening device, and the stability of the transmission between the first connecting shaft 41 and the plurality of second connecting shafts 42 is improved.

[0062] In this embodiment, the support frame is connected to the protective sleeve 12, thereby connecting the support frame to the shell 1. When the bolt fixing assembly is placed vertically, the support member can support the shell 1 to prevent the weight of the shell 1 from being completely applied to the first connecting shaft 41 and the second connecting shaft 42, thereby affecting the transmission of the first connecting shaft 41 and the second connecting shaft 42.

[0063] Furthermore, the support frame includes a support plate and a plurality of columns, the support plate is connected to the driving shaft assembly 4, and the columns are arranged at intervals on the side of the support plate away from the driving shaft assembly 4. Thus, the support plate is supported by the plurality of columns, the stability of the support plate when it is fixed is improved, and the support plate can stably support the driving shaft assembly 4.

[0064] It should be noted that, in this embodiment, the driving tool is disposed on a side of the support plate away from the protective sleeve 12 .

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A bolt fastening device, characterized in that: include: A shell body having a cavity formed therein; A transmission assembly, disposed in the cavity and connected to the housing; A bolt fastener connected to the transmission assembly; The driving shaft assembly includes a first connecting shaft and a second connecting shaft. The first end of the first connecting shaft is connected to the transmission assembly to drive the transmission assembly to rotate, and the second connecting shaft is connected to the second end of the first connecting shaft.

2. The bolt fastening device according to claim 1, characterized in that: The driving shaft assembly includes a plurality of second connecting shafts, which are detachably connected end to end in sequence, and the second connecting shaft close to the first connecting shaft is detachably connected to the second end of the first connecting shaft.

3. The bolt fastening device according to claim 2, characterized in that: The first connecting shaft is a telescopic shaft, a first end of the telescopic shaft is connected to the transmission assembly, and a second end of the telescopic shaft is suitable for telescoping along the length direction of the telescopic shaft to change the distance between the second end of the telescopic shaft and the transmission assembly.

4. The bolt fastening device according to claim 1, characterized in that: A connecting piece is provided at the second end of the driving shaft assembly, and the connecting piece is suitable for connecting a driving tool and the driving shaft assembly.

5. The bolt fastening device according to any one of claims 1 to 4, characterized in that: The transmission assembly includes a driving gear and a driven gear meshing with each other, the driving gear is connected to the first connecting shaft, and the driven gear is connected to the bolt fastener.

6. The bolt fastening device according to claim 5, characterized in that: A preset angle is formed between the driving gear and the driven gear.

7. The bolt fastening device according to claim 5, characterized in that: A clamping piece is provided on the side of the bolt fastener facing away from the driven gear.

8. The bolt fastening device according to any one of claims 1 to 4, characterized in that: Also includes: A protective sleeve is connected to the housing, and the protective sleeve is sleeved on the driving shaft assembly.

9. The bolt fastening device according to any one of claims 1 to 4, characterized in that: Also includes: A support frame is connected to the housing, the support frame is connected to the second end of the driving shaft assembly, and the support frame is used to support the driving shaft assembly.

10. The bolt fastening device according to claim 9, characterized in that: The support frame comprises a support plate and a plurality of columns, the support plate is connected to the driving shaft assembly, and the columns are arranged at intervals on a side of the support plate away from the driving shaft assembly.

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