Closed special head fastening device

Abstract

The utility model discloses a closed special head fastening device, and relates to the technical field of mechanical engineering. The closed special head comprises a closed special head body and further comprises a handle, the connector is installed on one side of the top of the closed special head body, a connecting rod is installed in the connector, a torsion arm is fixedly connected to one side of the connecting rod, an extension rod is fixedly connected to one side of the torsion arm, and the surface of the extension rod is sleeved with a positioning shell; the limiting groove is formed in the top of an inner cavity of the positioning shell. By rotating a twisting block, a rotating rod can drive a gear to be meshed with a toothed plate to move towards one side, and when the toothed plate moves, the toothed plate can be matched with an internal thread plate, a screw rod and a fixing plate to enable an extension rod to extend towards one side for adjustment, so that the using length is adjusted, a worker can conveniently take a positioning shell to conduct fastening operation, and if resetting is needed, the positioning shell can be conveniently replaced. The torsion ring can be rotated to enable the internal thread plate to descend on the surface of the screw, so that the toothed plate is separated from the gear, and resetting operation is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical engineering technology, and in particular relates to a closed-end special head fastening device. Background Technology

[0002] A closed-end fastener is a fastener used to connect or secure two components. It is typically made of steel, stainless steel, or other metals, possessing a certain degree of elasticity and tensile strength. The structural feature of a closed-end fastener is its tight seal, effectively preventing loosening or detachment during use. This design improves the safety of equipment and systems and reduces maintenance costs. Closed-end fasteners are widely used in industries such as industrial, construction, and automotive. The use of closed-end fasteners requires a fastening device.

[0003] Currently, the fastening devices used for closed-end special heads are usually a special tightening head and an anti-torsion arm used together for tightening. However, the existing torque arms are of a fixed length. When the space for the special head to be tightened is relatively narrow, it is easy to make it difficult for the hand to reach into the narrow space to tighten the special head, which leads to inconvenience in use.

[0004] To address these issues, we provide a special closed-head fastening device. Utility Model Content

[0005] The purpose of this utility model is to provide a special closed-end fastening device, which solves the problem that the torque arm used in the prior art for the special closed-end fastening device is not easy to adjust in terms of length by means of an adjusting component.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a special closed-end fastening device, comprising a special closed-end head body, and further comprising: a connector installed on one side of the top of the special closed-end head body; a connecting rod installed inside the connector; a torque arm fixedly connected to one side of the connecting rod; an extension rod fixedly connected to one side of the torque arm; a positioning shell sleeved on the surface of the extension rod; a limiting groove formed at the top of the inner cavity of the positioning shell; a connecting groove formed on one side of the inner cavity of the extension rod; an adjusting component provided inside the connecting groove; the adjusting component comprising a toothed plate, a rotating rod, and an internal threaded plate.

[0008] The present invention is further configured such that an extension rod is fixedly connected to one side of the positioning shell, and an anti-slip groove is formed on the surface of the extension rod.

[0009] The present invention is further configured such that mounting blocks are fixedly connected to the top and bottom of one side of the extension rod, and one side of the mounting block is fixedly connected to the torque arm.

[0010] The present invention is further configured such that a positioning groove is provided on one side inside the extension rod, and a retaining rod is provided inside the positioning groove. One end of the retaining rod is fixedly connected to the inner wall of the positioning shell, and the other end of the retaining rod is fixedly connected to a limiting ring for limiting the final stroke of the positioning shell.

[0011] The present invention is further configured such that the toothed plate is disposed inside the connecting groove, the rotating rod is rotatably connected to the inside of the positioning shell, the internally threaded plate is fixed to one side of the toothed plate, a gear for cooperating with the toothed plate is fixedly connected to one side of the rotating rod, a torsion block is fixedly connected to the end of the rotating rod away from the gear, a screw is threadedly connected to the inside of the internally threaded plate, a slider is sleeved on the top of the surface of the screw, the surface of the slider is slidably connected to the inside of the limiting groove, a torsion ring is fixedly connected to the top of the screw, a fixing plate is rotatably connected to the bottom of the screw, and one side of the fixing plate is fixedly connected to the extension rod.

[0012] The present invention is further configured such that a sliding plate is fixedly connected to one side of the internal thread plate, and a sliding rod is provided inside the sliding plate, with the two ends of the sliding rod being fixedly connected to the slider and the fixed plate, respectively.

[0013] The present invention is further configured such that a second spring group is fixedly arranged at the bottom of the toothed plate, and the bottom of the second spring group is fixedly connected to the inner wall of the connecting groove.

[0014] The present invention is further configured such that an elastic retaining ring is fitted on the surface of the rotating rod, one side of the elastic retaining ring is fixedly connected to the positioning shell, and one side of the inside of the torsion block is provided with a groove for use with the elastic retaining ring.

[0015] The present invention has the following beneficial effects.

[0016] This invention allows users to adjust the length of the device for tightening the special head by rotating a torsion block. This causes the rotating rod to move the gear meshing plate to one side. As the gear plate moves, it works with the internal thread plate, screw, and fixing plate to extend the extension rod to one side, thus adjusting the length of the device. This makes it easier for workers to pick up the positioning shell for tightening. If resetting is required, the torsion ring can be rotated to lower the internal thread plate on the screw surface, disengaging the gear plate from the gear and facilitating the resetting operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A perspective view of a special closed-head fastening device;

[0019] Figure 2 A schematic diagram of the extension rod deployment structure in a closed-end special head fastening device;

[0020] Figure 3 A schematic cross-sectional view of the positioning shell in a closed-end special head fastening device;

[0021] Figure 4 This is a schematic diagram of the adjusting component in a special closed-head fastening device.

[0022] In the attached diagram: 1. Closed-end special head body; 2. Connector; 3. Connecting rod; 4. Torque arm; 5. Extension rod; 51. Positioning shell; 6. Limiting groove; 7. Connecting groove; 8. Adjusting component; 801. Gear plate; 802. Rotating rod; 803. Internal thread plate; 804. Gear; 805. Torsion block; 806. Screw; 807. Sliding block; 808. Torsion ring; 809. Fixing plate; 810. Sliding plate; 811. Sliding rod; 812. Second spring assembly; 813. Elastic retaining ring; 814. Retaining groove; 9. Extension rod; 10. Anti-slip groove; 11. Mounting block; 12. Positioning groove; 13. Retaining rod; 14. Limiting ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figure 1-4This utility model is a special closed-end fastening device, including a special closed-end head body 1, and further including: a connector 2 installed on one side of the top of the special closed-end head body 1, a connecting rod 3 installed inside the connector 2, a torque arm 4 fixedly connected to one side of the connecting rod 3, an extension rod 5 fixedly connected to one side of the torque arm 4, a positioning shell 51 sleeved on the surface of the extension rod 5; a limiting groove 6 opened at the top of the inner cavity of the positioning shell 51, a connecting groove 7 opened on one side of the inner cavity of the extension rod 5, an adjusting component 8 provided inside the connecting groove 7, the adjusting component 8 including a toothed plate 801, a rotating... The rod 802 and the internal thread plate 803 are fixedly connected to one side of the positioning shell 51. An extension rod 9 is fixedly connected to the surface of the extension rod 9. An anti-slip groove 10 is provided on the surface of the extension rod 9. Mounting blocks 11 are fixedly connected to the top and bottom of one side of the extension rod 5. One side of the mounting block 11 is fixedly connected to the torque arm 4. A positioning groove 12 is provided on one side of the inside of the extension rod 5. A retaining rod 13 is provided inside the positioning groove 12. One end of the retaining rod 13 is fixedly connected to the inner wall of the positioning shell 51. The other end of the retaining rod 13 is fixedly connected to a limiting ring 14 used to limit the final stroke of the positioning shell 51.

[0026] Specifically: the connecting rod 3 facilitates the connection and installation of the connector 2 and the closed special head 1; the torque arm 4, in conjunction with the extension rod 5, facilitates the fastening operation; the extension rod 5, in conjunction with the positioning shell 51, can extend the working length; the anti-slip groove 10 provides a surface for the extension rod 9 to facilitate the user's grip on the extension rod 9; the mounting block 11 facilitates the installation and fixation between the extension rod 5 and the torque arm 4; and the positioning groove 12, in conjunction with the retaining rod 13 and the limiting ring 14, can limit the position of the extension rod 5.

[0027] Example 2

[0028] Please see Figure 1-4Based on Embodiment 1, the toothed plate 801 is disposed inside the connecting groove 7, the rotating rod 802 is rotatably connected to the inside of the positioning shell 51, the internally threaded plate 803 is fixed to one side of the toothed plate 801, a gear 804 that cooperates with the toothed plate 801 is fixedly connected to one side of the rotating rod 802, a torsion block 805 is fixedly connected to the end of the rotating rod 802 away from the gear 804, a screw 806 is threadedly connected to the inside of the internally threaded plate 803, a slider 807 is sleeved on the top of the surface of the screw 806, the surface of the slider 807 is slidably connected to the inside of the limiting groove 6, a torsion ring 808 is fixedly connected to the top of the screw 806, and the bottom of the screw 806 is rotatably connected to... There is a fixed plate 809, one side of which is fixedly connected to the extension rod 5. A sliding plate 810 is fixedly connected to one side of the internal thread plate 803. A sliding rod 811 is provided inside the sliding plate 810. The two ends of the sliding rod 811 are fixedly connected to the slider 807 and the fixed plate 809 respectively. A second spring group 812 is fixedly arranged at the bottom of the toothed plate 801. The bottom of the second spring group 812 is fixedly connected to the inner wall of the connecting groove 7. An elastic retaining ring 813 is sleeved on the surface of the rotating rod 802. One side of the elastic retaining ring 813 is fixedly connected to the positioning shell 51. A groove 814 for use with the elastic retaining ring 813 is opened on one side inside the torsion block 805.

[0029] Specifically: By rotating the torsion block 805, the slot 814 inside the torsion block 805 will frequently engage with the elastic retaining ring 813. At the same time, the rotating rod 802 will drive the gear 804 to mesh with the toothed plate 801 and move it to one side. When the toothed plate 801 moves, it will cooperate with the internal thread plate 803, the screw 806, and the fixing plate 809 to extend the extension rod 5 to one side for adjustment, thereby adjusting the length to be used, so that the operator can pick up the positioning shell 51 for fastening. If a reset is required, the torsion ring 808 can be rotated to lower the internal thread plate 803 on the surface of the screw 806. When the internal thread plate 803 moves, it will also drive the sliding plate 810 on the surface of the sliding rod 811 to limit the downward movement of the internal thread plate 803, which will help the toothed plate 801 to descend and simultaneously squeeze and retract the second spring group 812, so that the toothed plate 801 disengages from the gear 804, thus facilitating the reset operation.

[0030] The working principle of this utility model is as follows: Before use, the torsion block 805 can be rotated. At this time, the slot 814 inside the torsion block 805 will frequently engage with the elastic retaining ring 813. At this time, the rotating rod 802 will drive the gear 804 to mesh with the toothed plate 801 and move it to one side. When the toothed plate 801 moves, it will cooperate with the internal thread plate 803, the screw 806, and the fixing plate 809 to extend the extension rod 5 to one side for adjustment, thereby adjusting the length to be used. However, when the extension rod 5 moves, it will be limited to move on the surface of the retaining rod 13. Once adjusted to the required length, the slot 814 will be used in conjunction with the arc-shaped elastic sheet on the surface of the elastic retaining ring 813 for auxiliary positioning. When reset is required, rotating the torsion ring 808 causes the internal thread plate 803 to descend on the surface of the screw 806. As the internal thread plate 803 moves, it will also drive the sliding plate 810 on the surface of the sliding rod 811 to limit the descent of the internal thread plate 803, which in turn drives the toothed plate 801 to descend and simultaneously squeezes and retracts the second spring assembly 812, causing the toothed plate 801 to disengage from the gear 804. Then, the extension rod 5 is retracted to facilitate the reset operation.

[0031] All standard parts used in this invention can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through the control unit. The control circuit of the control unit can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Therefore, the control method and circuit connection will not be explained in detail in this invention.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A closed-end special head fastening device, comprising a closed-end special head body (1), characterized in that, Also includes; A connector (2) is installed on one side of the top of the closed special head body (1). A connecting rod (3) is installed inside the connector (2). A torque arm (4) is fixedly connected to one side of the connecting rod (3). An extension rod (5) is fixedly connected to one side of the torque arm (4). A positioning shell (51) is sleeved on the surface of the extension rod (5). A limiting groove (6) is opened at the top of the inner cavity of the positioning shell (51), and a connecting groove (7) is opened on one side of the inner cavity of the extension rod (5). An adjusting component (8) is provided inside the connecting groove (7). The adjusting component (8) includes a toothed plate (801), a rotating rod (802), and an internal thread plate (803).

2. The closed-end special head fastening device according to claim 1, characterized in that: An extension rod (9) is fixedly connected to one side of the positioning shell (51), and an anti-slip groove (10) is provided on the surface of the extension rod (9).

3. The closed-end special head fastening device according to claim 1, characterized in that: Mounting blocks (11) are fixedly connected to the top and bottom of one side of the extension rod (5), and one side of the mounting block (11) is fixedly connected to the torque arm (4).

4. The closed-end special head fastening device according to claim 1, characterized in that: A positioning groove (12) is provided on one side inside the extension rod (5). A retaining rod (13) is provided inside the positioning groove (12). One end of the retaining rod (13) is fixedly connected to the inner wall of the positioning shell (51). The other end of the retaining rod (13) is fixedly connected to a limiting ring (14) for limiting the final stroke of the positioning shell (51).

5. A closed-end special head fastening device according to claim 1, characterized in that: The toothed plate (801) is disposed inside the connecting groove (7), the rotating rod (802) is rotatably connected to the inside of the positioning shell (51), the internal thread plate (803) is fixed to one side of the toothed plate (801), a gear (804) that cooperates with the toothed plate (801) is fixedly connected to one side of the rotating rod (802), a torsion block (805) is fixedly connected to one end of the rotating rod (802) away from the gear (804), a screw (806) is threadedly connected to the inside of the internal thread plate (803), a slider (807) is sleeved on the top of the surface of the screw (806), the surface of the slider (807) is slidably connected to the inside of the limiting groove (6), a torsion ring (808) is fixedly connected to the top of the screw (806), a fixing plate (809) is rotatably connected to the bottom of the screw (806), and one side of the fixing plate (809) is fixedly connected to the extension rod (5).

6. A closed-end special head fastening device according to claim 5, characterized in that: A sliding plate (810) is fixedly connected to one side of the internal thread plate (803). A sliding rod (811) is provided inside the sliding plate (810). The two ends of the sliding rod (811) are fixedly connected to the slider (807) and the fixed plate (809) respectively.

7. A closed-end special head fastening device according to claim 5, characterized in that: The bottom array of the toothed plate (801) is fixed with a second spring group (812), and the bottom of the second spring group (812) is fixedly connected to the inner wall of the connecting groove (7).

8. A closed-end special head fastening device according to claim 5, characterized in that: The surface of the rotating rod (802) is fitted with an elastic retaining ring (813), one side of which is fixedly connected to the positioning shell (51), and one side of the inside of the torsion block (805) is provided with a groove (814) for use with the elastic retaining ring (813).

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