Corner type bolt tightening device

Abstract

The utility model discloses a corner type bolt tightening device, which belongs to the field of gear eccentric heads, and comprises a gear eccentric head, a torque joint and a connector for fixing the torque joint on the gear eccentric head, the gear eccentric head comprises a shell, an input connector, an output connector and a transmission part, wherein the input connector and the output connector are rotationally installed in the two ends of the shell respectively, and the transmission part is arranged in the shell and used for connecting the output connector with the input connector. The shell is L-shaped, and an input gear and an output gear are fixedly mounted at one end of the input connector and one end of the output connector respectively; the transmission part comprises a first transmission gear rotationally installed in the bending position of the shell, and at least one second transmission gear meshed in sequence is arranged between the first transmission gear and the input gear and between the first transmission gear and the output gear. The bolt tightening device is simple in structure, convenient to use and capable of effectively tightening bolts or nuts with longitudinal shielding positions.

Description

Technical Field

[0001] This application relates to the field of gear eccentric head technology, specifically an 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 corner bolt tightening device to solve the above problems. Utility Model Content

[0005] This application provides a corner bolt tightening device, which aims to solve the problem mentioned in the background art that the gear eccentric head of the existing tightening tool is difficult to adapt to quiet operation in narrow spaces due to longitudinal obstruction.

[0006] To achieve the above objectives, this application provides the following technical solution: a corner bolt tightening device, comprising a gear eccentric head, a torque connector, and a connector for fixing the torque connector to the gear eccentric head. The gear eccentric head includes a housing, an input connector and an output connector respectively rotatably mounted inside both ends of the housing, and a transmission component disposed inside the housing for connecting the output connector and the input connector.

[0007] To enable the tightening of bolts or nuts in confined spaces with longitudinal obstructions, unlike existing bolt tightening devices, the housing is L-shaped. An input gear and an output gear are fixedly mounted at one end of the input connector and output connector, respectively. The transmission component includes a first transmission gear rotatably mounted inside the bend of the housing. At least one second transmission gear is sequentially meshed between the first transmission gear and both the input and output gears. This allows one end of the eccentric gear head to bypass the longitudinal obstruction and enter the operating space to engage with the bolt or nut to be tightened, thus achieving the tightening operation.

[0008] Preferably, the end of the input connector away from the input gear extends through the housing, and the end of the input connector away from the input gear has a first spline groove adapted to the transmission block of the torque connector.

[0009] Preferably, the end of the output connector away from the output gear passes through the housing, and the end of the output connector away from the output gear has a second spline groove for connecting with a bolt or bolt bit.

[0010] Preferably, the connector includes a support plate, a connecting frame, an outer gear plate, and an inner gear plate;

[0011] The support plate is fitted onto the outside of the input connector and is fixedly connected to the housing;

[0012] The external gear disk is rotatably mounted on the input connector and fixedly connected to the support disk, with the external gear disk located inside the support disk;

[0013] The connecting bracket is fixedly installed at one end of the torque joint near the gear eccentric head;

[0014] The internal gear plate is fitted onto the outer side of the transmission block and fixedly connected to the connecting frame, and is used to fit onto the external gear plate to fix the connecting frame onto the support plate.

[0015] Preferably, the input connector is fixedly fitted with a first bearing that engages with the external gear plate.

[0016] Preferably, the end of the support plate away from the torque joint has at least two positioning blocks arranged in a ring array, and the housing has positioning grooves adapted to the positioning blocks.

[0017] Preferably, the housing includes a bottom shell for mounting the input connector, the output connector and the transmission component, and a cover plate for pressing the input connector, the output connector and the transmission component into the bottom shell. Both the bottom shell and the cover plate have through holes for a locking member to pass through and fix the cover plate to the bottom shell.

[0018] Preferably, the positioning groove is formed on the cover plate, and the end of the input connector away from the input gear passes through the cover plate;

[0019] The end of the output connector away from the output gear passes through the bottom shell.

[0020] This bolt tightening device has a simple structure and is easy to use. It adopts an L-shaped housing and can transmit the torque of the input connector to the output connector through the first and second transmission gears, thereby realizing the tightening operation of bolts or nuts in positions with longitudinal obstructions.

[0021] This bolt-safe device uses a support plate, an outer gear plate, and an inner gear plate to connect the torque connector and the input connector in conjunction with a transmission block and a slot. This effectively ensures the stability of the torque connector and the input connector, thereby ensuring the stability of the tightening operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a corner bolt tightening device.

[0023] Figure 2 This is an exploded structural diagram of a corner bolt tightening device.

[0024] Figure 3 This is a schematic diagram of the eccentric head of a gear in a corner bolt tightening device.

[0025] Figure 4 This is a schematic diagram of the torque connector in an angle bolt tightening device.

[0026] In the picture:

[0027] 1. Eccentric head of gear;

[0028] 11. Shell;

[0029] 111. Bottom shell; 112. Cover plate; 113. Perforation;

[0030] 12. Input connector;

[0031] 121. Input gear; 122. Slot; 123. First bearing;

[0032] 13. Output connector;

[0033] 131. Output gear; 132. Second spline groove; 133. Fourth bearing;

[0034] 14. First transmission gear;

[0035] 15. Second transmission gear;

[0036] 16. Positioning groove;

[0037] 17. First fixed shaft;

[0038] 171. Second bearing;

[0039] 18. Second fixed shaft;

[0040] 181. The third bearing;

[0041] 2. Torque connector; 21. Transmission clamp;

[0042] 3. Connectors;

[0043] 31. Support plate;

[0044] 32. Connecting frame;

[0045] 33. External gear disc;

[0046] 34. Internal gear disc; Detailed Implementation

[0047] 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.

[0048] Example 1

[0049] This embodiment provides a corner bolt tightening device, such as Figure 1 , Figure 2 and Figure 3 As shown, the bolt tightening device includes a gear eccentric head 1, a torque connector 2, and a connector 3 for fixing the torque connector 2 on the gear eccentric head 1. The gear eccentric head 1 includes a housing 11, an input connector 12 and an output connector 13 respectively rotatably mounted inside both ends of the housing 11, and a transmission component disposed inside the housing 11 for connecting the output connector 13 and the input connector 12.

[0050] Unlike existing bolt tightening devices, the housing 11 is L-shaped, and an input gear 121 and an output gear 131 are fixedly installed at one end of the input connector 12 and the output connector 13, respectively. The transmission component includes a first transmission gear 14 rotatably installed inside the bend of the housing 11, and at least one second transmission gear 15 is provided between the first transmission gear 14 and the input gear 121 and the output gear 131 in sequence.

[0051] In use, the output connector 13 is inserted into the bolt or nut that needs to be tightened. After the output connector 13 is fixed to the nut, the torque is applied to the input connector 12 through the torque connector 2, causing the input connector 12 to rotate on the housing 11. The first transmission gear 14 is driven to rotate through the second transmission gear 15 between the first transmission gear 14 and the input gear 121. The output gear 131 is driven to rotate through the second transmission gear 15 between the output gear 131 and the first transmission gear 14, thereby driving the output connector 13 to rotate and transmitting the torque to the bolt or nut to achieve the tightening of the bolt or nut.

[0052] It is understandable that when there is a longitudinal obstruction at the location of a bolt or nut in a confined space, the output connector 13 can bypass the longitudinal obstruction and act on the bolt or nut, thereby achieving the tightening operation of the bolt or nut at that location.

[0053] like Figure 2 , Figure 3 and Figure 4 As shown, to connect the transmission block 21 of the torque connector 2 to the input connector 12, allowing the power on the transmission block 21 to be transmitted to the input connector 12, the end of the input connector 12 away from the input gear 121 passes through the housing 11, and the end of the input connector 12 away from the input gear 121 has a first spline groove 122 adapted to the transmission block 21 of the torque connector 2. To enable the output connector 13 to act on the bolt or nut to be tightened, the end of the output connector 13 away from the output gear 131 passes through the housing 11, and the end of the output connector 13 away from the output gear 131 has a second spline groove 132 for connecting to the bolt or bolt bit. The output connector 13 can be directly fitted onto the corresponding type of bolt or nut through the second spline groove 132, or a bolt bit of the corresponding type can be fixed to the output connector 13 through the spline groove 132, and then the bolt bit can be fixed to the bolt or nut, thereby enabling the tightening operation of bolts or nuts of different types.

[0054] It should be noted that the torque connector 2 is connected to the output shaft of the electric gun via the connecting handle. The bevel gear on the transmission shaft drives the bevel gear on the transmission block 21 to rotate, thereby driving the input connector 12.

[0055] Example 2

[0056] like Figure 2 and Figure 4As shown, to ensure the stability of the connection between the torque connector 2 and the gear eccentric head 1 and to facilitate tightening, unlike in Embodiment 1, the connector 3 includes a support plate 31, a connecting frame 32, an external gear plate 33, and an internal gear plate 34. The support plate 31 is fitted onto the outside of the input connector 12 and fixedly connected to the housing 11; the external gear plate 33 is rotatably fitted onto the input connector 12 and fixedly connected to the support plate 31, and the external gear plate 33 is located inside the support plate 31; the connecting frame 32 is fixedly installed on the end of the torque connector 2 near the gear eccentric head 1; the internal gear plate 34 is fitted onto the outside of the transmission block 21 and fixedly connected to the connecting frame 32, and is used to fit onto the external gear plate 33 to fix the connecting frame 32 onto the support plate 31. To reduce the impact of the external gear plate 33 on the input connector 12 and ensure the stability of the input connector 12, a first bearing 123 that connects with the external gear plate 33 is fixedly fitted onto the input connector 12.

[0057] When connecting the torque connector 2 to the gear eccentric head 1, the internal gear disc 34 on the connecting bracket 31 is fitted onto the external gear disc 33 on the support disc 31, so that the internal gear disc 34 and the external gear disc 33 mesh, thereby fixing the torque connector 2 onto the gear eccentric head 1. At this time, the transmission block 21 of the torque connector 2 is inserted into the first spline groove 122 of the input connector 12 to realize the transmission of torque.

[0058] It is understandable that by connecting the connecting bracket 32 ​​fixed on the torque connector 2 to the support plate 31 fixed on the housing 11 through the internal gear plate 34 and the external gear plate 33, the torque connector 2 can be fixed to the gear eccentric head 1.

[0059] To secure the support plate 31 to the housing 11, the end of the support plate 31 away from the torque joint 2 has at least two positioning blocks 311 arranged in a circular array, and the housing 11 has positioning grooves 16 adapted to the positioning blocks 311. It should be noted that the positioning blocks 311 and the positioning grooves 16 are interference-fitted, and the positioning blocks 311 are fixedly engaged in the positioning grooves 16 when no force is applied.

[0060] Example 3

[0061] like Figure 1 , Figure 2 and Figure 3As shown, to facilitate the assembly and maintenance of the gear eccentric head 1, unlike Embodiments 1 and 2, the housing 11 includes a bottom shell 111 for mounting the input connector 12, the output connector 13, and the transmission component, and a cover plate 112 for pressing the input connector 12, the output connector 13, and the transmission component within the bottom shell 111. Both the bottom shell 111 and the cover plate 112 have through holes 113 for a locking element to pass through and fix the cover plate 112 to the bottom shell 111. The locking element can be a bolt.

[0062] Understandably, the input connector 12, output connector 13, and transmission components are housed within a detachable housing 11 consisting of a bottom shell 111 and a cover plate 112, which facilitates the production and assembly of the gear eccentric head 2. Furthermore, after prolonged use, the gear set of the gear eccentric head 2 is prone to wear. During maintenance, the housing 11 can be disassembled to apply lubricating oil to the internal transmission components for maintenance or replacement.

[0063] The positioning groove 16 is formed on the cover plate 112, and the end of the input connector 12 away from the input gear 121 passes through the cover plate 112; the end of the output connector 13 away from the output gear 131 passes through the bottom shell 111.

[0064] Furthermore, in order to enable the input gear 121, output gear 131, first transmission gear 14, and second transmission gear 15 to rotate within the housing 11 and reduce wear between the input gear 121, output gear 131, first transmission gear 14, and second transmission gear 15 and the housing 11, a first fixed shaft 17 is fixedly installed on the housing 11 at the position corresponding to the input connector 12. The input gear 121 is located at one end of the input connector 12, and the fixed shaft 17 has a second bearing 171 that connects to the input gear 121. The output gear 131 is fixedly mounted on the output connector 13, and a fourth bearing 133 is provided on the output connector 13 at both ends corresponding to the output gear 131, connecting to the housing 11. A second support shaft 18 is fixedly installed on the housing 11 at the positions corresponding to the first transmission gear 14 and the second transmission gear 15, and a third bearing 181 is fixedly mounted on the second support shaft 18.

[0065] 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 corner bolt tightening device, comprising a gear eccentric head (1), a torque connector (2), and a connector (3) for fixing the torque connector (2) on the gear eccentric head (1), wherein the gear eccentric head (1) comprises a housing (11), an input connector (12) and an output connector (13) respectively rotatably mounted inside both ends of the housing (11), and a transmission component disposed inside the housing (11) for connecting the output connector (13) and the input connector (12); characterized in that The housing (11) is L-shaped, and an input gear (121) and an output gear (131) are fixedly installed at one end of the input connector (12) and the output connector (13), respectively. The transmission component includes a first transmission gear (14) rotatably mounted inside the bend of the housing (11), and at least one second transmission gear (15) is provided between the first transmission gear (14) and the input gear (121) and the output gear (131) respectively.

2. The corner bolt tightening device according to claim 1, characterized in that: The end of the input connector (12) away from the input gear (121) passes through the housing (11), and the end of the input connector (12) away from the input gear (121) is provided with a first spline groove (122) that is adapted to the transmission block (21) of the torque connector (2).

3. The corner bolt tightening device according to claim 1, characterized in that: The output connector (13) has one end away from the output gear (131) that passes through the housing (11), and the output connector (13) has a second spline groove (132) for connecting with a bolt or bolt bit at the other end away from the output gear (131).

4. The corner bolt tightening device according to claim 2, characterized in that: The connector (3) includes a support plate (31), a connecting frame (32), an outer gear plate (33), and an inner gear plate (34). The support plate (31) is fitted onto the outside of the input connector (12) and is fixedly connected to the housing (11); The external gear disc (33) is rotatably mounted on the input connector (12) and fixedly connected to the support disc (31). The external gear disc (33) is located inside the support disc (31). The connecting bracket (32) is fixedly installed at one end of the torque joint (2) near the gear eccentric head (1); The internal gear plate (34) is fitted on the outer side of the transmission block (21) and fixedly connected to the connecting frame (32), and is used to fit on the external gear plate (33) to fix the connecting frame (32) on the support plate (31).

5. The corner bolt tightening device according to claim 4, characterized in that: The input connector (12) is fixedly fitted with a first bearing (123) that connects with the external gear plate (33).

6. The corner bolt tightening device according to claim 4, characterized in that: The support plate (31) has at least two positioning blocks (311) arranged in a ring array at one end away from the torque joint (2), and the housing (11) has positioning grooves (16) adapted to the positioning blocks (311).

7. The corner bolt tightening device according to claim 6, characterized in that: The housing (11) includes a bottom shell (111) for loading the input connector (12), the output connector (13) and the transmission component, and a cover plate (112) for pressing the input connector (12), the output connector (13) and the transmission component into the bottom shell (111). Both the bottom shell (111) and the cover plate (112) are provided with through holes (113) for locking members to pass through and fix the cover plate (112) to the bottom shell (111).

8. The corner bolt tightening device according to claim 7, characterized in that: The positioning groove (16) is formed on the cover plate (112), and the end of the input connector (12) away from the input gear (121) passes through the cover plate (112). The end of the output connector (13) away from the output gear (131) passes through the bottom shell (111).

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