Anti-loosening device for bolt

Abstract

The utility model discloses an anti-loosening device for a bolt. The anti-loosening device solves the problems that in the prior art, hexagonal heads of bolts are mixed in angle, operation space is small, and operation is inconvenient. The anti-loosening device for the bolt comprises an inserting piece and a transition piece, one end of the inserting piece is matched with the bolt arranged on a component in an inserting or clamping mode, the other end of the inserting piece is detachably connected with the transition piece, and a locking assembly used for locking the transition piece is arranged between the transition piece and the component. According to the anti-loosening device, the anti-loosening operation on the bolt can be completed by utilizing the plug connector, the transition piece and the locking assembly, the influence of the angle of a bolt head on the device installation can be solved, the device is convenient to disassemble, check and replace, the use space is small, the applicability to the distribution position of the bolt or a bolt group is high, and the bolt can be checked and retightened at any time by using the device; meanwhile, the bolt can be prevented from loosening, and the safety of the bolt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of normal pressure tool changing, in particular to a bolt anti-loosening device. Background Art

[0002] Bolts are a commonly used fastener and are widely used in various mechanical equipment. In an environment with long-term vibration, bolts are prone to loosening, posing a potential safety hazard to personnel life and property. Therefore, it is particularly important to prevent bolts or bolt groups from loosening. The existing basic method of preventing bolts from loosening is through thread fasteners or locking nuts. This method has a good anti-loosening effect, but has the problem of inconvenient disassembly or reduced secondary use effect. Secondly, during the tool changing process of the normal pressure tool changing device, due to the small space of the tool disc and the limited space for the use of the cylinder, the bolt anti-loosening structure needs to be disassembled at any time to facilitate the use of the cylinder.

[0003] In the prior art, for example, a device for preventing bolts from loosening is disclosed in the patent number CN 106917809 A. The patent mentions a method for preventing bolts from loosening, but the device cannot solve the influence of the angle of the hexagonal bolt on the assembly of the device. A bolt anti-loosening device disclosed in the patent number CN 219317397 U mentions a method for preventing bolts from loosening, but its structure is relatively complex and requires a certain amount of space. The operation is cumbersome on a mechanism with many bolts, which is not conducive to assembly. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a device for preventing bolts from loosening, which solves the problems in the prior art of mixed angles of hexagonal heads of bolts and small operating space and inconvenient operation.

[0005] The technical solution of the utility model is achieved as follows: a bolt anti-loosening device includes a connector and a transition piece, one end of the connector is plugged or snap-fitted with a bolt arranged on a component, and the other end is detachably connected to the transition piece, and a locking assembly for locking the transition piece is provided between the transition piece and the component.

[0006] Further preferably, the plug-in connector includes a stud, and a plug connector for limiting rotation is provided at the bottom of the stud, and the plug connector is plugged and matched with a plug slot provided at the top of the bolt to limit the rotation of the stud. The plug connector and the plug slot can limit the rotation of the bolt and facilitate the quick plugging and unplugging of the plug-in connector.

[0007] As an implementation mode, the plug connector is a hexagonal head, the plug slot is a hexagonal slot, the hexagonal head and the hexagonal slot are plugged together, and a limit ring is also provided at the bottom of the stud, and the diameter of the limit ring is greater than the outer diameter of the hexagonal head.

[0008] As another embodiment, the plug connector is a sleeve plug, the bolt is an external hexagonal bolt, the plug-in slot is a first sleeve arranged on the top of the bolt, the first sleeve plug is plugged into the sleeve, and a limit ring is also provided at the bottom of the stud, and the diameter of the limit ring is greater than the outer diameter of the hexagonal head.

[0009] Further preferably, the transition piece is a second sleeve, an internal threaded hole is provided inside the second sleeve, and the internal thread of the internal threaded hole is matched with the external thread on the upper part of the stud.

[0010] Further preferably, the locking assembly includes a fixing plate and a fixing seat, the fixing seat is fixed on the component, one end of the fixing plate is fixedly connected to the transition piece, and the other end is detachably connected to the fixing seat.

[0011] Further preferably, the fixing plate includes a fixing portion and a connecting portion, one end of the connecting portion is fixedly connected to the fixing portion, and the other end is provided with a clamping plate portion, and the clamping plate portion is detachably connected to the fixing seat.

[0012] Further preferably, the clamping plate portion is provided with a pin hole I, and the fixing seat is provided with a pin hole II, and the pin hole I corresponds to the pin hole II and is connected via a pin.

[0013] Further preferably, the fixing portion of the fixing plate can fix a plurality of transition pieces at the same time.

[0014] Further preferably, the fixing portion of the fixing plate is fixed to the transition piece by welding; or, the fixing portion of the fixing plate is fixed to the transition piece by bolts.

[0015] The beneficial effects of the utility model are as follows: the utility model can complete the anti-loosening operation of the bolt by using the plug-in piece, the transition piece and the locking assembly, can solve the influence of the bolt head angle on the installation of the device and is easy to disassemble, inspect and replace, uses a small space, and has strong applicability to the distribution position of the bolt or bolt group. The use of the device can check and tighten the bolt at any time, and at the same time can prevent the bolt from loosening, thereby improving the safety of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the connector of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the transition piece of the utility model.

[0020] Figure 4 It is a schematic diagram of the matching status of the connector and the bolt.

[0021] Figure 5 It is a schematic diagram of the matching status of the transition piece and the connector.

[0022] Figure 6 It is a schematic diagram of the locking state of the locking assembly on the transition piece.

[0023] Figure 7 This is a schematic diagram of the bolt review status.

[0024] Figure 8 This is a schematic diagram of the connector structure in Example 3. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1 As shown, embodiment 1, a device for preventing bolts from loosening, comprises a connector 1 and a transition piece 2, one end of the connector 1 is plugged or snap-fitted with a bolt 12 provided on a component 11, and the other end is detachably connected to the transition piece 2. In this embodiment, a connector is used to achieve quick plug-in cooperation with the bolt 12, and the transition piece is connected to the locking assembly to achieve the anti-loosening effect on the bolt. A locking assembly for locking the transition piece 2 is provided between the transition piece 2 and the component 11. In this embodiment, the locking assembly is used to lock the bolts on the component to prevent loosening, and at the same time, it does not affect the rapid disassembly and assembly of the bolts, and can be reused. The utility model can complete the anti-loosening operation of the bolt by using the connector 1, the transition piece 2 and the locking assembly, has a simple structure, a small use space, and strong flexibility. At the same time, it avoids the lack of space for the cylinder during the tool change process, and can be disassembled, inspected, and maintained at any time.

[0027] In this embodiment, Figure 2 As shown, as a preferred solution, the plug connector 1 includes a stud 1-1, and a plug connector for limiting rotation is provided at the bottom of the stud 1-1, and the plug connector is plugged into and matched with a plug slot provided at the top of the bolt 12. The plug connector can be a polygonal plug connector that cooperates with the plug slot at the top of the bolt 12, effectively limiting the rotation of the bolt 12 while realizing the rapid disassembly and assembly of the plug connector 1.

[0028] Embodiment 2, a device for preventing bolts from loosening, comprises a connector 1 and a transition piece 2, wherein one end of the connector 1 is plugged or snap-fitted with a bolt 12 provided on a component 11, and the other end is detachably connected to the transition piece 2. In this embodiment, a connector is used to achieve quick plug-in cooperation with the bolt 12, and the transition piece is connected to the locking assembly to achieve the effect of preventing the bolts from loosening. A locking assembly for locking the transition piece 2 is provided between the transition piece 2 and the component 11. In this embodiment, the locking assembly is used to lock the bolts on the component to prevent loosening, while not affecting the rapid disassembly and assembly of the bolts, and can be reused. The utility model can complete the anti-loosening operation of the bolts by using the connector 1, the transition piece 2 and the locking assembly, has a simple structure, small use space, and strong flexibility, while avoiding insufficient use space for the cylinder during tool change, and can be disassembled, inspected, and maintained at any time.

[0029] In this embodiment, as a preferred solution, the plug connector 1 includes a stud 1-1, and a plug connector for limiting rotation is provided at the bottom of the stud 1-1, and the plug connector is plugged into and matched with a plug slot provided at the top of the bolt 12. The plug connector can be a polygonal plug connector that cooperates with the plug slot at the top of the bolt 12, effectively limiting the rotation of the bolt 12 while realizing the rapid disassembly and assembly of the plug connector 1.

[0030] This embodiment is further optimized, such as Figure 2 , 3 As shown, the plug connector is a hexagonal head 4, and the plug slot on the top of the bolt 12 is a hexagonal slot. The hexagonal head 4 is plugged into the hexagonal slot to fit the hexagonal socket bolt. A limit ring 5 is also provided at the bottom of the stud 1-1. The diameter of the limit ring 5 is larger than the outer diameter of the hexagonal head 4, which can be used to limit the depth of the hexagonal head extending into the hexagonal slot and ensure the stability of the plug connector.

[0031] Embodiment 3, a device for preventing bolts from loosening. The difference between this embodiment and embodiment 2 is that the plug connector in this embodiment is a sleeve plug 4a, the bolt 12 is an external hexagonal bolt, and the plug slot is a first sleeve 13 arranged on the top of the bolt 12. The first sleeve can be sleeved on the nut of the external hexagonal bolt or fixed by welding. The first sleeve can be a hexagonal sleeve or a plum blossom sleeve. The sleeve plug 4a is plugged into the first sleeve, and a limit retaining ring 5 is also provided at the bottom of the stud 1-1. The diameter of the limit retaining ring 5 is greater than the outer diameter of the hexagonal head 4. It can be used to limit the depth of the sleeve plug extending into the sleeve and ensure the stability of the plug-in.

[0032] As a preferred solution, the transition piece 2 is a second sleeve 8, and an internal threaded hole 7 is provided inside the second sleeve 8. The internal thread of the internal threaded hole 7 is threadedly matched with the external thread 6 on the upper part of the stud 1-1; that is, the second sleeve 8 is threadedly connected to the stud 1-1, which can not only play a connecting role, but also achieve a detachable role. As a preferred solution, the stud will give a downward force to the bolt 12 during the rotation process, which effectively prevents the bolt 12 from rotating.

[0033] Embodiment 4: A device for preventing bolts from loosening. This embodiment is further preferred based on Embodiment 1, 2 or 3. The locking assembly in this embodiment includes a fixing plate 3 and a fixing seat 9. The fixing plate 3 and the fixing seat 9 can be fixed by bolts, or by an integrated design or other fixed connection methods. The fixing seat 9 is fixed on the component 11. The fixing seat 9 can be fixedly connected to the component by bolt connection, welding or other fixing methods. One end of the fixing plate 3 is fixedly connected to the transition piece 2, and the other end of the fixing seat 9 is detachably connected. The fixing plate can be used to fix multiple transition pieces together and fixed to the structural member through a detachable structure.

[0034] As a preferred solution, the fixing plate 3 includes a fixing portion 3-1 and a connecting portion 3-2, and the fixing portion 3-1 and the connecting portion 3-2 can be fixed by welding, bolt connection, or one-piece molding design. One end of the connecting portion 3-2 is fixedly connected to the fixing portion 3-1, and the other end is provided with a clamping plate portion 3-3, and the clamping plate portion 3-3 is detachably connected to the fixing seat 9. Specifically, the clamping plate portion 3-3 is provided with a pin shaft hole I, and the fixing seat 9 is provided with a pin shaft hole II, and the pin shaft hole I corresponds to the pin shaft hole II and is connected by a pin shaft 10.

[0035] In a specific implementation process, the fixing portion 3-1 of the fixing plate 3 can simultaneously fix multiple transition pieces 2. The fixing portion 3-1 of the fixing plate 3 is fixed to the transition piece 2 by welding, or the fixing portion 3-1 of the fixing plate 3 is fixed to the transition piece 2 by bolts.

[0036] When installing for the first time, mate the hexagonal head with the bolt, such as Figure 4 Then screw the internal thread of the transition piece and the external thread of the hexagonal head together to the bottom, as shown in FIG. Figure 5 As shown; then weld the fixing plate to the external position of the transition piece, and finally fix the fixing plate and the fixing seat by a pin, and finally weld the fixing seat to the structural member, as shown Figure 6 shown.

[0037] In actual practice, the hexagonal head of the connector is plugged into the bolt in the fastening position, and then the transition piece is screwed onto the connector through threads. Finally, several transition pieces are welded together with a fixing plate. When the bolts are rechecked, it is only necessary to remove the connector from the bolts at the same time. After the recheck of the bolts is completed, the angle between the hexagonal head and the bolt can be adjusted to complete the matching of the bolt and the hexagonal head. Finally, the fixing plate can be fixed to complete the installation of the bolt anti-loosening device.

[0038] If the bolt becomes loose, it will drive the matching hexagonal head to rotate. When the hexagonal head and the transition piece are screwed to the bottom, they will stop rotating, thereby preventing the bolt from continuing to loosen and rotate. The fixing plate fixes several transition pieces together to prevent the main bolt body from driving the hexagonal head and the transition piece to rotate together or prevent it from falling off the workpiece. Figure 7 shown.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bolt anti-loosening device, characterized in that: The invention comprises a plug-in connector (1) and a transition member (2), wherein one end of the plug-in connector (1) is plug-engaged or snap-fitted with a bolt (12) provided on a component (11), and the other end is detachably connected to the transition member (2), and a locking assembly for locking the transition member (2) is provided between the transition member (2) and the component (11).

2. The anti-loosening device for bolts according to claim 1, characterized in that: The plug connector (1) comprises a stud (1-1), the bottom of the stud (1-1) is provided with a plug connector for limiting rotation, the plug connector is plugged into and matched with a plug slot provided on the top of the bolt (12) and limits the rotation of the stud (1-1).

3. The anti-loosening device for bolts according to claim 2, characterized in that: The plug connector is a hexagonal head (4), the bolt (12) is a hexagonal socket bolt, the plug slot is a hexagonal slot, the hexagonal head (4) is plugged into the hexagonal slot, and a limit retaining ring (5) is also provided at the bottom of the stud (1-1), and the diameter of the limit retaining ring (5) is greater than the outer diameter of the hexagonal head (4).

4. The anti-loosening device for bolts according to claim 2, characterized in that: The plug connector is a sleeve plug (4a), the bolt (12) is an external hexagonal bolt, the plug slot is a first sleeve (13) arranged on the top of the bolt (12), the sleeve plug (4a) and the first sleeve (13) are plugged together, and a limit retaining ring (5) is also provided at the bottom of the stud (1-1), and the diameter of the limit retaining ring (5) is greater than the outer diameter of the hexagonal head (4).

5. The anti-loosening device for bolts according to claim 3 or 4, characterized in that: The transition piece (2) is a second sleeve (8), and an internal threaded hole (7) is provided inside the second sleeve (8). The internal thread of the internal threaded hole (7) is threadably matched with the external thread (6) on the upper portion of the stud (1-1).

6. The anti-loosening device for bolts according to any one of claims 1 to 4, characterized in that: The locking assembly comprises a fixing plate (3) and a fixing seat (9), wherein the fixing seat (9) is fixed on the component (11), one end of the fixing plate (3) is fixedly connected to the transition piece (2), and the other end is detachably connected to the fixing seat (9).

7. The anti-loosening device for bolts according to claim 6, characterized in that: The fixing plate (3) comprises a fixing portion (3-1) and a connecting portion (3-2); one end of the connecting portion (3-2) is fixedly connected to the fixing portion (3-1); the other end is provided with a clamping plate portion (3-3); and the clamping plate portion (3-3) is detachably connected to the fixing seat (9).

8. The anti-loosening device for bolts according to claim 7, characterized in that: The clamping plate portion (3-3) is provided with a pin shaft hole I, and the fixing seat (9) is provided with a pin shaft hole II. The pin shaft hole I corresponds to the pin shaft hole II and is connected via a pin shaft (10).

9. The anti-loosening device for bolts according to claim 7 or 8, characterized in that: The fixing portion (3-1) of the fixing plate (3) can fix a plurality of transition pieces (2) at the same time.

10. The anti-loosening device for bolts according to claim 9, characterized in that: The fixing portion (3-1) of the fixing plate (3) is fixed to the transition piece (2) by welding or bolts.

Images