Linear corner type bolt tightening device

Abstract

The utility model discloses a linear corner type bolt tightening device, which belongs to the field of tightening devices and comprises a shell, an input shaft, an output shaft and a transmission structure, the input shaft and the output shaft are rotatably mounted at two ends of the shell respectively, and the transmission structure is arranged in the shell and used for transmitting power on the input shaft to the output shaft. The output shaft is provided with an output connector used for being connected with a to-be-tightened bolt. The first end and the second end are located at the two ends of the turning part respectively, the extending directions of the ends, away from the turning part, of the first end and the second end are opposite, and the second end and the first end are arranged in parallel; the transmission structure comprises an input gear, an output gear and a first transmission gear, wherein the input gear and the output gear are fixedly arranged on the input shaft and the output shaft respectively in a sleeving mode, and the first transmission gear is rotationally installed in the turning part. According to the linear corner type bolt tightening device, the corner type design is adopted, the output connector can stretch into a narrow space with a longitudinal shield to tighten a workpiece to be tightened in the narrow space, and use is convenient.

Description

Technical Field

[0001] This application relates to the field of tightening device technology, specifically a linear angle bolt tightening device. Background Technology

[0002] In the installation of mechanical parts, a large number of bolts are required for fixing. Tightening bolts or nuts mainly relies on wrenches of the same type. However, when dealing with tightening operations in confined spaces, the special shape of the wrench makes it difficult to rotate internally. Therefore, a gear-driven eccentric head is generally used to tighten bolts or nuts in confined spaces that are difficult for ordinary tools to access, transmitting the necessary torque to achieve the tightening of bolts or nuts in narrow spaces.

[0003] While the gear eccentric heads of tightening tools currently on the market can extend into narrow spaces, when there is longitudinal obstruction at the location of the bolt or nut to be tightened, it is difficult for their output connector to act on the nut, making it difficult to tighten the bolt or nut at that location.

[0004] Therefore, this application provides a linear angle bolt tightening device to solve the above problems. Utility Model Content

[0005] This application provides a linear angle bolt tightening device, which aims to solve the problem mentioned in the background art that the existing gear eccentric head is difficult to extend into the lateral position with longitudinal obstruction for tightening operation.

[0006] To achieve the above objectives, this application provides the following technical solution: a linear angle bolt tightening device, comprising a housing, an input shaft and an output shaft respectively rotatably mounted at both ends of the housing, and a transmission structure disposed inside the housing for transmitting power from the input shaft to the output shaft, wherein the output shaft is provided with an output connector for connecting to the bolt to be tightened.

[0007] Unlike existing technologies, the housing includes a bend and a first end and a second end located at opposite ends of the bend. The first end and the second end extend in opposite directions away from the bend, and the second end is parallel to the first end. The transmission structure includes an input gear and an output gear fixedly mounted on the input shaft and output shaft, respectively, and a first transmission gear rotatably mounted inside the bend. A second transmission gear for connecting the first transmission gear to the input gear is rotatably mounted inside the housing, and a third transmission gear for connecting the output gear to the first transmission gear is rotatably mounted inside the housing. Thus, when tightening a bolt or nut in a transverse space with longitudinal obstruction, the second end can be inserted through the inlet, bringing it to the same horizontal level as the workpiece to be tightened. Laterally moving the tightening device brings the output connector closer to the workpiece. When the output connector is fitted onto the workpiece, the tightening operation can be performed.

[0008] Preferably, the input shaft and the output shaft are rotatably mounted at the ends of the first end and the second end away from the turning portion, respectively, and the second transmission gear and the third transmission gear are rotatably mounted inside the first end and the second end, respectively.

[0009] Preferably, one end of the output connector has a spline, and one end of the output shaft has a first spline groove that matches the spline.

[0010] Preferably, the bolt tightening device further includes a connector disposed at one end of the housing corresponding to the input shaft for connecting the input shaft to the electric gun.

[0011] Preferably, the connector includes a sleeve located at one end of the housing near the input shaft, a connecting shaft rotatably mounted inside the sleeve, a first bevel gear fixedly mounted on the end of the input shaft away from the input gear, and a second bevel gear fixedly mounted on one end of the connecting shaft and meshing with the first bevel gear. The end of the connecting shaft away from the second bevel gear has a second spline groove for connecting to the output shaft of the electric gun.

[0012] Preferably, the housing is provided with a needle roller disc for contacting the first bevel gear.

[0013] Preferably, an external gear ring is fixedly fitted at the end of the input shaft away from the input gear, and the inner wall of the first bevel gear has a tooth groove that meshes with the external gear ring.

[0014] This linear angle bolt tightening device features an angle design, allowing the output connector to extend into a narrow space with longitudinal obstruction to tighten the workpiece inside, making it convenient to use.

[0015] The connector of this linear angle bolt tightening device is located along the length of one end of the housing, allowing its output end to extend into a deeper, narrow space for tightening operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a linear angle bolt tightening device.

[0017] Figure 2 This is a schematic diagram of the exploded structure of a linear angle bolt tightening device.

[0018] In the picture:

[0019] 1. Shell;

[0020] 11. Turning point;

[0021] 12. First end;

[0022] 13. Second end;

[0023] 14. Needle roller disc;

[0024] 2. Input axis;

[0025] 21. External toothed ring;

[0026] 3. Output shaft;

[0027] 31. First spline groove;

[0028] 4. Transmission structure;

[0029] 41. Input gear;

[0030] 42. Output gear;

[0031] 43. First transmission gear;

[0032] 44. Second transmission gear;

[0033] 45. Third transmission gear;

[0034] 5. Output connector;

[0035] 51. Spline;

[0036] 6. Connectors;

[0037] 61. Sleeve;

[0038] 62. Connecting shaft;

[0039] 63. First bevel gear;

[0040] 631. Glandular groove;

[0041] 64. Second bevel gear. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Example 1

[0044] This embodiment provides a linear angle bolt tightening device, such as... Figure 1 and Figure 2 As shown, the bolt tightening device includes a housing 1, an input shaft 2 and an output shaft 3 rotatably mounted at both ends of the housing 1, and a transmission structure 4 disposed inside the housing 1 for transmitting power from the input shaft 2 to the output shaft 3. The output shaft 3 is provided with an output connector 5 for connecting to the bolt to be tightened. The housing 1 includes a bend 11 and a first end 12 and a second end 13 located at both ends of the bend 11. The first end 12 and the second end 13 extend in opposite directions away from the bend 11, and the second end 13 is parallel to the first end 12. The transmission structure 4 includes an input gear 41 and an output gear 42 fixedly mounted on the input shaft 2 and the output shaft 3, respectively, and a first transmission gear 43 rotatably mounted inside the bend 11. A second transmission gear 44 rotatably mounted inside the housing 1 for drivingly connecting the first transmission gear 43 to the input gear 41, and a third transmission gear 45 rotatably mounted inside the housing 1 for drivingly connecting the output gear 42 to the first transmission gear 43. The input shaft 2 and the output shaft 3 are rotatably mounted at the ends of the first end 12 and the second end 13 away from the turning part 11, respectively, and the second transmission gear 43 and the third transmission gear 45 are rotatably mounted inside the first end 12 and the second end 13, respectively.

[0045] In use, hold the first end 12 and insert the second end 13 into the space to be tightened through the inlet, aligning the second end 13 with the bolt or nut to be tightened. Then, move the tightening device laterally, allowing the output connector 5 to pass over the longitudinal obstruction and approach the bolt or nut to be tightened. Once the output connector 5 is fitted onto the workpiece to be tightened, the input shaft 2 is driven to rotate by the electric gun. Under the action of the input gear 431 and the second transmission gear 434, the first transmission gear 433 rotates, which in turn drives the output gear 432 to rotate under the action of the third transmission gear 435. This, in turn, drives the output shaft 3 to rotate, causing the output connector 5 to tighten the workpiece.

[0046] It should be noted that, in order to accommodate the tightening of bolts or nuts of different specifications, one end of the output connector 5 has a spline 51, and one end of the output shaft 3 has a first spline groove 31 that matches the spline 51. The spline 51 of the output connector 5 is inserted into the first spline groove 31, and the output connector of the corresponding model can be replaced according to the model of the bolt or nut, thereby accommodating the tightening of bolts or nuts of different sizes.

[0047] Example 2

[0048] In order to connect input shaft 2 to the electric gun, the electric gun drives input shaft 2 to rotate, such as... Figure 1 and Figure 2 As shown, the bolt tightening device also includes a connector 6 disposed at one end of the housing 1 corresponding to the input shaft 2 for connecting the input shaft 2 to the electric gun.

[0049] Specifically, the connector 6 includes a sleeve 61 located at one end of the housing 1 near the input shaft 2, a connecting shaft 62 rotatably mounted inside the sleeve 61, a first bevel gear 63 fixedly fitted on the end of the input shaft 2 away from the input gear 41, and a second bevel gear 64 fixedly mounted on one end of the connecting shaft 62 and meshing with the first bevel gear 63. The end of the connecting shaft 62 away from the second bevel gear 64 has a second spline groove for connecting to the output shaft of the electric gun. An external gear ring 21 is fixedly fitted on the end of the input shaft 2 away from the input gear 41, and the inner wall of the first bevel gear 63 has a toothed groove 631 that meshes with the external gear ring 21. In use, the output shaft of the electric gun is inserted into the second spline groove. During tightening, the output shaft of the electric gun drives the connecting shaft 62 to rotate, which in turn drives the input shaft 2 to rotate under the action of the first bevel gear 63 and the second bevel gear 64, thus achieving the driving of the input shaft 2.

[0050] It is understandable that the sleeve 61 is set in the extension direction of the housing 1 corresponding to the input shaft 2, which can effectively increase the length at that end and avoid the problem that the tightening device cannot be inserted into a deeper space due to the connector being set at the end of the input shaft 2, so that the quiet device can be inserted into a deeper narrow space.

[0051] It is worth mentioning that the first bevel gear 63 is mounted on the input shaft 2, and one end of it contacts the housing 1, which can easily lead to friction damage to the first bevel gear 63. In order to reduce the contact friction between the first bevel gear 63 and the housing 1, a needle roller disc 14 for contacting the first bevel gear 63 is provided inside the housing 1.

[0052] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A linear rotary bolt tightening device, comprising a housing (1), an input shaft (2) and an output shaft (3) respectively rotatably mounted at both ends of the housing (1), and a transmission structure (4) disposed inside the housing (1) for transmitting power from the input shaft (2) to the output shaft (3), wherein the output shaft (3) is provided with an output connector (5) for connecting to the bolt to be tightened; characterized in that The housing (1) includes a turning portion (11) and a first end (12) and a second end (13) located at both ends of the turning portion (11). The first end (12) and the second end (13) extend in opposite directions away from the turning portion (11), and the second end (13) is arranged parallel to the first end (12). The transmission structure (4) includes an input gear (41) and an output gear (42) respectively fixedly mounted on the input shaft (2) and the output shaft (3), and a first transmission gear (43) rotatably mounted inside the turning part (11); a second transmission gear (44) for drivingly connecting the first transmission gear (43) and the input gear (41) is rotatably mounted inside the housing (1); and a third transmission gear (45) for drivingly connecting the output gear (42) and the first transmission gear (43) is rotatably mounted inside the housing (1).

2. The linear-to-angular bolt tightening device of claim 1, wherein: The input shaft (2) and the output shaft (3) are rotatably mounted at the ends of the first end (12) and the second end (13) away from the turning part (11), respectively, and the second transmission gear (44) and the third transmission gear (45) are rotatably mounted inside the first end (12) and the second end (13), respectively.

3. The linear-to-angular bolt tightening device of claim 1, wherein: One end of the output connector (5) has a spline (51), and one end of the output shaft (3) has a first spline groove (31) adapted to the spline (51).

4. The linear-to-angular bolt tightening device of claim 1, wherein: The bolt tightening device also includes a connector (6) disposed at one end of the housing (1) corresponding to the input shaft (2) for connecting the input shaft (2) to the electric gun.

5. The linear-to-angular bolt tightening device of claim 4, wherein: The connector (6) includes a sleeve (61) located at one end of the housing (1) near the input shaft (2), a connecting shaft (62) rotatably mounted inside the sleeve (61), a first bevel gear (63) fixedly fitted at one end of the input shaft (2) away from the input gear (41), and a second bevel gear (64) fixedly mounted at one end of the connecting shaft (62) and meshing with the first bevel gear (63). The end of the connecting shaft (62) away from the second bevel gear (64) has a second spline groove for connecting to the output shaft of the electric gun.

6. The linear-to-angular bolt tightening device of claim 5, wherein: The housing (1) is provided with a needle roller disc (14) for contacting the first bevel gear (63).

7. The linear-to-angular bolt tightening device of claim 5, wherein: An external gear ring (21) is fixedly fitted at one end of the input shaft (2) away from the input gear (41), and the inner wall of the first bevel gear (63) has a tooth groove (631) that meshes with the external gear ring (21).

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