CN202185890U - Screwing tool for moment of force - Google Patents

Abstract

The utility model relates to a screwing tool for moment of force, which comprises a cylinder and a connecting structure, wherein the connecting structure is fixedly connected on the outer periphery of the cylinder and matched with a fastening tool. The cylinder is axially provided with an open through groove, connecting plates are axially fixedly arranged on the outer periphery of the cylinder on two sides of the open through groove correspondingly, and a bolt structure which is arranged between the corresponding connecting plates is used for applying opposite applied force on the connecting plates to lead the cylinder to radially tightly hold towards the center. The screwing tool for moment of force can be more easily sleeved onto a workpiece to be screwed, the cylinder and the workpiece to be screwed are pressed and fixed by the aid of holding force during assembling of the workpiece to be screwed, and thereby damage of the workpiece to be screwed is avoided.

Description

A torque tightening tool

technical field

The utility model relates to a tightening device, in particular to a torque tightening tool for tightening round parts.

Background technique

The dynamic/static contact is one of the important components in the high-voltage switch products. As a component that needs to be opened and closed, the requirement for the tightening torque is naturally relatively high, but due to the limitation of the size and structure of the contact, it cannot Direct tightening with a torque wrench requires a torque conversion tool to connect the contact and the torque wrench. The traditional torque conversion tooling is only considered to be able to tighten between the contact and the torque wrench when it is designed, and it is directly welded by the cylinder and the steel plate, resulting in heavy weight of the tooling, many consumables, and high cost. High, due to the heavy weight, it is laborious and time-consuming to operate, which affects the production progress of the product. At the same time, when the tooling is used, the contacts need to be put into the barrel, which is inconvenient to operate and easy to scratch the contacts; It has been improved by adopting the welded structure of the cylinder body and the bent plate. The bent plate is located on the center line of the cylinder body and is provided with a connecting head for cooperating with the fastening tool. This structure reduces the weight of the tooling, but the two structures All can only rely on two small screw rods that are used to cooperate with the corresponding threaded holes on the contact to work by passing through the cylinder body. When the torque is tightened, the small screw rods are too stressed to easily scratch the contact or deform the threaded holes.

Contents of the invention

The purpose of the utility model is to provide a torque tightening tool to solve the problem in the prior art that the torque tightening tool is easy to damage the tightened parts.

In order to solve the above problems, the utility model provides a torque tightening tool, which includes a cylinder and a connection structure fixed on the outer peripheral surface of the cylinder for cooperating with the fastening tool. The cylinder is provided with an opening through the axial direction. slots, on the outer peripheral surface of the cylinder on both sides of the open through groove, there are connecting plates correspondingly fixed in the axial direction, and there is a connecting plate between the corresponding connecting plates that exerts an opposing force on the connecting plates and makes the cylinder along the radial direction. Bolt structure that hugs tightly towards the center.

The bolt structure includes tension bolts and nuts, and the corresponding connecting plates are provided with bolt holes for the tension bolts to pass through and tightly fit with the nuts.

The bolt structure includes a tension bolt, one of the corresponding connection plates is provided with a threaded hole for fastening with the tension bolt, and the other connection plate is provided with a threaded hole for the tension bolt to pass through. bolt piercing.

A screw rod that moves along the radial direction of the cylinder body is pierced on the cylinder body, and is used for anti-rotation fit between the cylinder body and the tightened part.

A buffer sleeve is detachably arranged on the inner peripheral surface of the cylinder to prevent the cylinder from scratching the tightened parts. The position corresponding to the screw rod on the buffer sleeve is provided along the radial direction for the screw rod to pass through. The through hole, the buffer sleeve is provided with an open through groove along the axial direction.

The connecting structure includes a bent plate whose two ends are fixedly connected to the outer peripheral surface of the cylinder, and a connecting head arranged on the bent plate and positioned on the center line of the cylinder for cooperating with the fastening tool.

In the utility model, an open through groove is provided on the cylinder along the axial direction, and connecting plates are correspondingly fixed along the axial direction on the outer peripheral surface of the cylinder on both sides of the open through groove, and the corresponding connecting plates are provided with A bolt structure that exerts an opposing force on the connecting plate and makes the cylinder tightly embrace the center in the radial direction. This scheme makes it easier for the torque tightening tool to be socketed on the tightened part. During the assembly of the tightened part, The barrel and the parts to be tightened are pressed and fixed by the clamping force, which avoids damage to the parts to be tightened.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A direction view of Fig. 1;

Fig. 3 is a schematic diagram of the assembly of the embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in detail:

As shown in Figures 1 to 3, a torque tightening tool includes a cylinder body 1 and a connection structure fixed on the outer peripheral surface of the cylinder body 1 for cooperating with a fastening tool. The fastening tool is a wrench, and the connection The structure includes a U-shaped curved plate 4 with two ends fixedly connected to the outer peripheral surface of the cylinder body 1, and a connecting head arranged on the U-shaped curved plate 4 and located on the centerline of the cylinder body 1 for cooperating with the fastening tool 3. The cylinder 1 is pierced with screws 8, 8' that move along the radial direction of the cylinder 1 for anti-rotation fit between the cylinder 1 and the tightened parts. The screws 8, 8' also Piercing on the U-shaped bent plate 4, the cylinder body 1 is provided with an open through groove 5 along the axial direction. There are two connecting plates 2, 2', and the corresponding connecting plates 2, 2' are provided with bolts that apply opposing forces to the connecting plates 2, 2' and make the cylinder body 1 tightly embrace the center in the radial direction structure, the bolt structure includes tension bolts 6 and nuts 7, and the corresponding two connecting plates 2, 2' are provided with bolt holes for the tension bolts 6 to pass through and tightly fit with the nuts 7 , in this bolt structure, elastic washers and flat washers are provided between the head of the tension bolt 6 and the nut 7 and the corresponding connecting plates; The cylinder scratches the buffer sleeve 9 of the tightened part, and the position corresponding to the screw rod 8, 8' on the buffer sleeve 9 is provided with a through hole for the screw rod 8, 8' to pass through in the radial direction. The buffer sleeve 9 is provided with an open slot along the axial direction; the said parts to be tightened are moving contacts or static contacts or other circular parts except the moving and static contacts.

When in use, first put the cylinder 1 with the buffer sleeve 9 on the tightened part, and then adjust the screw rods 8, 8' in the radial direction so that the screws 8, 8' pass through the buffer sleeve 9 and screw into the tightened part In the corresponding thread hole, then tighten the tension bolt 6 so that the cylinder body 1 with the buffer sleeve 9 hugs the tightened part tightly, and after the fastening tool is connected with the connector 3 of the torque tightening tool, it can be realized Tightening, the exposed handle of the screw can also be used to apply the tightening force.

In addition, in other embodiments of the present utility model, the bolt structure in the above embodiment can also be replaced by such a structure, which includes tension bolts, and one of the corresponding connecting plates is provided with a There are threaded holes for tight fit of the tightening bolts, and the other connecting plate is provided with bolt perforations for the tension bolts to pass through.

Claims (6)

1. A torque tightening tool, comprising a cylinder and a connection structure fixedly connected to the outer peripheral surface of the cylinder for cooperating with the fastening tool, characterized in that: the cylinder is provided with an open slot along the axial direction, On the outer peripheral surface of the cylinder on both sides of the opening through groove, there are correspondingly fixed connecting plates along the axial direction, and there is a device between the corresponding connecting plates that exerts an opposing force on the connecting plates and makes the cylinder move in the radial direction. Bolt structure hugging towards the center. 2. A torque tightening tool according to claim 1, characterized in that: the bolt structure includes tension bolts and nuts, and the corresponding connecting plates are provided with The nut is tightly fitted with a bolt piercing hole. 3. A torque tightening tool according to claim 1, characterized in that: the bolt structure includes a tension bolt, and one of the corresponding connection plates is provided with a bolt fastened to the tension bolt. Cooperating threaded holes, the other connecting plate is provided with bolt perforations for the tension bolts to pass through. 4. A torque tightening tool according to claim 1, characterized in that: there is a thread on the cylinder body that moves along the radial direction of the cylinder body for anti-rotation fit between the cylinder body and the tightened parts. screw. 5. A torque tightening tool according to claim 1 or 2 or 3 or 4, characterized in that: a buffer for preventing the cylinder from scratching the tightened parts is detachably provided on the inner peripheral surface of the cylinder A sleeve, the buffer sleeve is provided with a through hole in the radial direction corresponding to the screw rod, and the buffer sleeve is provided with an open slot along the axial direction. 6. A torque tightening tool according to claim 5, characterized in that: the connecting structure includes a bent plate with two ends fixedly connected to the outer peripheral surface of the cylinder and a Connectors on the centerline for mating with fastening tools.

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