A sleeve assembly for a pole bolt

Abstract

The utility model relates to pole post bolt quick dismounting technical field discloses a sleeve assembly for pole post bolt, including sleeve and sleeve cooperation clamp, one end of sleeve is open and is equipped with the inner chamber for accommodating bolt head, the end face on the other end is equipped with the connecting portion for quick butt joint with external wrench, the side wall of sleeve is equipped with through -hole, the clamp includes clamp handle and elastic branch, and the tail end of each elastic branch forms a clamp head, the clamp head can correspondly embed in the through -hole, and the bolt head is realized clamping through elastic branch, make the sleeve assembly can fix the nut of bolt in the sleeve, prevent bolt from falling when dismounting, can use in the whole process in the process that DC battery is disassembled, need not use handwork to carry out hole -to -hole or loose bolt, solved the inconvenience when sleeve wrench dismounts DC battery pole post bolt, also avoided the problem that staff is burnt by electric arc because of battery short circuit.

Description

Technical Field

[0001] This utility model relates to the field of quick assembly and disassembly technology for pole bolts, and in particular to a sleeve assembly for pole bolts. Background Technology

[0002] In hydropower stations, the DC system provides a reliable power supply for important devices such as relay protection and monitoring equipment, which is crucial for ensuring the long-term stable operation of the generating units. The DC battery room, as the backup power source for the DC system, requires complete replacement every few years. This is especially true in large hydropower stations where there are numerous DC systems distributed throughout the powerhouse, each with two battery sets and over 100 cells per set, making each battery replacement a massive undertaking.

[0003] Currently, most DC system batteries are 2V lead-acid batteries, each with positive and negative terminals. Each battery bank consists of over 100 batteries connected in series. When connecting or disconnecting battery cables, a socket wrench matching the size of the battery terminal bolts is required to improve the speed of connection and disconnection.

[0004] Traditional socket wrenches lack bolt-fixing mechanisms within the socket. For longer battery bolts, once loosened, they cannot be quickly unscrewed with a socket wrench and must be unscrewed by hand. When reinstalling bolts, they are prone to falling out of the socket, requiring manual tightening before the wrench can be used for final tightening. Hand-tightening battery bolts not only reduces disassembly and assembly efficiency, but also poses a risk of electric arc burns if a short circuit occurs between multiple batteries during disassembly or assembly, as the large current generated at the moment of contact can burn the battery terminals and bolts. Direct contact with the bolts also carries the risk of burns. Therefore, using traditional socket wrenches to disassemble and install battery terminal bolts has many drawbacks and hidden dangers. A specialized socket for DC battery terminal bolts is needed to improve the efficiency of disassembly and assembly while reducing the risk of electric shock to workers. Utility Model Content

[0005] The purpose of this utility model is to provide a sleeve assembly for terminal bolts to address the above-mentioned problems. This assembly can not only fix the bolt nut inside the sleeve to prevent the bolt from falling off during disassembly and assembly, but also can be used throughout the disassembly and assembly of DC batteries without the need for manual hole alignment or bolt tightening and loosening. This solves the inconvenience of using a socket wrench to disassemble and assemble DC battery terminal bolts, and also avoids the problem of workers being burned by electric arc due to battery short circuits.

[0006] This utility model is achieved through the following solution: A sleeve assembly for a pole bolt includes a sleeve and a clamp that mates with the sleeve; one end of the sleeve is open and has an inner cavity for receiving the bolt head, and the end face of the other end has a connecting part for quick engagement with an external wrench; at least one pair of radially opposing through holes are formed on the side wall of the sleeve; the clamp includes a clamp handle and two elastic branches extending in the same direction from the clamp handle, the end of each elastic branch forming a clamp head; the clamp head can be correspondingly inserted into the through hole and clamp the bolt head through the elastic branches.

[0007] Furthermore, the side of the clamp head facing the inside of the sleeve has an inlet ramp at its front end and a clamping plane at its rear end for engaging with the side of the bolt head.

[0008] Furthermore, the surfaces of the inclined plane and the clamping plane are coated with a friction-enhancing layer.

[0009] Furthermore, the radial thickness of the clamp head extending into the sleeve is greater than the wall thickness of the sleeve at the through hole, so that the inner side of the clamp head protrudes from the inner cavity surface of the sleeve after being inserted.

[0010] Furthermore, the outer side of the clamp head is designed to be arc-shaped, and its curvature matches the curvature of the outer surface of the sleeve, so that there is no protrusion on the outer surface of the sleeve after insertion.

[0011] Furthermore, the elastic branches form the clamping arms, enabling the clamping head to elastically open and generate a rebound clamping force when subjected to radial compression from the bolt head.

[0012] Furthermore, the clamp arm is a Y-shaped tubing.

[0013] Furthermore, the clamp arm is provided with a connecting block, and the connecting block has an arc-shaped opening that fits against the outer surface of the sleeve.

[0014] Furthermore, the through-hole can be rectangular, circular, or elliptical in shape.

[0015] Furthermore, the outer surface of the fixture is provided with an integrated insulating layer, which covers the exposed parts of the fixture handle, fixture arm and fixture head.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This sleeve clamp uses the elasticity of metal to fix the bolts and nuts of DC batteries. Compared with ordinary sleeves, it can effectively prevent bolts from falling off when disassembling and assembling bolts, and solve the problem of difficulty in aligning screw holes.

[0017] 2. When the bolt threads are loose and the automatic knob of the quick-release wrench cannot be used, and the nut can only be rotated manually after removing the socket, this patented socket uses a manual crank handle at the rear of the clamp to directly and quickly rotate the nut 360° with the handle without removing the socket until the bolt is tightened or completely removed, which greatly improves work efficiency.

[0018] 3. Because DC batteries are all connected in series and have extremely low internal resistance, a short circuit between multiple batteries during battery installation or removal can generate a strong electric arc due to the instantaneous high current, burning the battery terminals and bolts and posing a threat to personal safety. This patented sleeve and clamp have all components with integrated insulation treatment. By rotating the insulated handle, workers' hands are prevented from directly contacting the bolts and being burned by the electric arc. This patent effectively prevents electric shock and ensures the safety of workers. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front and rear sides of the sleeve structure of this utility model; Figure 2 This is a schematic diagram of the left and right sides of the sleeve of this utility model; Figure 3 This is a schematic diagram of the fixture of this utility model; Figure 4 This is a detailed schematic diagram of the clamp head of this utility model; Figure 5 This is a schematic diagram of the installation of the sleeve assembly of this utility model; Figure label: 1-Sleeve; 11-Hexagonal inner cavity; 12-Through hole; 13-Connector; 2-Clamp; 3-Clamp arm; 4-Clamp handle; 5-Clamp head; 51-Introduction slope; 52-Clamping plane; 53-Outer surface. Detailed Implementation

[0020] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0021] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] like Figure 1 , Figure 2 As shown, a sleeve assembly for pole bolts is provided, including a sleeve and a clamp that mates with the sleeve; the sleeve 1 is a hexagonal inner cavity 11 sleeve 1, one end of which is an internal hexagonal hole, and the other end is provided with a connector 13 that mates with a quick wrench, and a pair of radially opposite rectangular through holes 12 are provided on the side wall of the sleeve 1.

[0025] like Figure 3 As shown, the clamp includes a clamp handle 4 and a clamp head 5. The clamp head 5 is connected to the clamp handle 4 via a clamp arm 3. The clamp arm 3 is elastic, and when the clamp head 5 is subjected to force, the clamp arm 3 can open radially and generate a rebound force. The clamp arm 3 consists of two elastic branches extending in the same direction from the clamp handle 4. The structure is preferably a Y-shaped tubular strip, made of high-elasticity spring steel, which has strong fatigue resistance and a large rebound force even with slight deformation. The bolt head, i.e., the nut at the top of the bolt, can be hexagonal. The elasticity of the clamp arm fixes the bolt or nut in place.

[0026] like Figure 5 As shown, the clamp arm 3 is laterally closer to the sleeve 1 relative to the sleeve 1, and the clamp head 5 is embedded in the through hole 12; when the nut is put on, the nut is squeezed by the chamfer of the clamp head 5, causing the clamp arm 3 to expand and deform outward, and the elastic force of the clamp arm 3 is converted into the squeezing force on the nut, thereby fixing the nut.

[0027] This application involves opening two small holes in a sleeve 1 specifically for pole bolts and embedding a matching clamp into the holes. The clamp's metal elasticity is used to fix the bolt. At the same time, an insulated handle is provided on the clamp to assist in manually rotating the sleeve 1. If the bolt becomes loose, the bolt can be quickly disassembled or reassembled by rotating the handle.

[0028] like Figure 4As shown, the inner side of the clamp head 5 is chamfered, including an inlet ramp 51 and a clamping plane 52. The inlet ramp 51 facilitates the smooth sliding of the bolt head, while the clamping plane 52 provides a stable contact surface, enhancing the clamping effect. The radial thickness of the clamp head 5 extending into the sleeve 1 is greater than the wall thickness of the sleeve 1 at the through hole 12, so that the inner side of the clamp head 5 protrudes from the inner cavity of the sleeve 1 after insertion, ensuring that the nut will definitely contact the clamp head 5 during insertion, thereby triggering the clamping mechanism.

[0029] In another embodiment, the difference from the above embodiments is that the outer side 53 of the clamp head 5 is designed to be arc-shaped, and the curvature can be consistent with the curvature of the outer surface of the sleeve 1, so that after the clamp head 5 is inserted, the outer surface of the sleeve 1 remains smooth and without protrusions.

[0030] In another embodiment, unlike the above embodiments, the surfaces of the guide slope 51 and the clamping plane 52 may be covered with a friction-enhancing layer, such as a rubber or polyurethane coating, to further increase the friction and prevent the bolt from slipping inside the sleeve 1.

[0031] In another embodiment, the difference from the above embodiments is that the shape of the through hole 12 can be designed as rectangular, circular or elliptical as needed.

[0032] In another embodiment, unlike the above embodiments, the outer surface of the clamp is provided with an integrated insulating layer, which covers the exposed parts of the clamp handle 4, clamp arm 3 and clamp head 5.

[0033] In another embodiment, unlike the above embodiments, the clamp arm 3 is provided with a connecting block, and the connecting block has an arc-shaped opening that fits against the outer surface of the sleeve 1. This serves to position and stabilize the clamp, preventing it from shaking during operation.

[0034] The socket 1 of this application is used in conjunction with a special clamp. The clamp head 5 of the special clamp is embedded in the socket 1. The socket 1 is used with a quick wrench that can automatically rotate in both directions. At the same time, due to the above structure, when disassembling and assembling nuts, the friction between the threads of the nut is too small in the loose state, so it is impossible to disassemble or assemble using a quick wrench. The nut can be quickly disassembled or assembled by turning the handle of the clamp by hand. After the nut is disassembled or tightened, only a slight force is needed to separate the nut from the socket. The operation is simple and convenient.

[0035] This application is mainly used for connecting bolts of DC battery terminals in large hydropower stations. It can also be applied to other scenarios involving the batch disassembly and assembly of bolts and nuts, effectively preventing them from falling into confined spaces or live parts, thus better protecting personal and equipment safety.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sleeve assembly for pole bolts, characterized in that: Includes a sleeve (1) and a clamp (2) that engages with the sleeve (1); One end of the sleeve (1) is open and has an inner cavity for accommodating the bolt head, and the other end has a connecting part for quick docking with an external wrench; at least one pair of radially opposite through holes (12) are opened on the side wall of the sleeve (1). The clamp (2) includes a clamp handle (4) and two elastic branches extending in the same direction from the clamp handle (4), and the end of each elastic branch forms a clamp head (5); the clamp head (5) can be correspondingly embedded in the through hole (12) and clamp the bolt head through the elastic branch.

2. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The clamp head (5) has an inlet ramp (51) at its front end and a clamping plane (52) at its rear end for fitting against the side of the bolt head.

3. A sleeve assembly for a pole bolt as described in claim 2, characterized in that, The surfaces of the guide slope (51) and the clamping plane (52) are covered with a friction-enhancing layer.

4. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The radial thickness of the clamp head (5) extending into the sleeve (1) is greater than the wall thickness of the sleeve (1) at the through hole (12), so that the inner side of the clamp head (5) protrudes from the inner cavity surface of the sleeve (1) after being inserted.

5. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The outer side (53) of the clamp head (5) is arc-shaped, and its curvature is adapted to the curvature of the outer surface of the sleeve (1), so that there is no protrusion on the outer surface of the sleeve (1) after it is inserted.

6. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The elastic branch forms a clamp arm (3), which enables the clamp head (5) to elastically open and generate a rebound clamping force when it is subjected to radial compression from the bolt head.

7. A sleeve assembly for a pole bolt as described in claim 6, characterized in that, The clamp arm (3) is a Y-shaped tube.

8. A sleeve assembly for a pole bolt as described in claim 6, characterized in that, The clamp arm (3) is provided with a connecting block, and the connecting block has an arc-shaped opening that fits against the outer surface of the sleeve (1).

9. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The through hole (12) is rectangular, circular or elliptical in shape.

10. A sleeve assembly for a pole bolt as described in claim 1, characterized in that, The outer surfaces of the sleeve (1) and the clamp (2) are provided with an integrated insulating layer, which covers the exposed parts of the clamp handle (4), clamp arm (3) and clamp head (5).

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