CN205600630U - A prevent follow -up assembly and disassembly tools for narrow space - Google Patents

Abstract

The utility model provides an anti-following disassembly tool for narrow spaces, which comprises a jack bolt, a lock nut and a cylinder body. The center of the cylinder body is provided with an axial through hole, and the two ends of the through hole are respectively provided with screw holes. To the opposite left-handed thread and right-handed thread, there are two ejector bolts, which are respectively fitted at both ends of the cylinder through threaded connections, and the outer end of the ejector bolt is far away from the cylinder. The plug, the lock nut is sleeved on the jack bolt, and is respectively arranged between the cylinder body and the straight plug. The anti-following disassembly tool for narrow spaces described in the utility model can conveniently and quickly fix the fastening bolts on the inner side of the fixing seat, thereby improving the work efficiency.

Description

Anti-tampering tools for tight spaces

technical field

The utility model relates to a disassembly tool used in a narrow space, which belongs to the technical field of mechanical assembly tools.

Background technique

During the disassembly and assembly of the equipment, some "concave"-shaped fixing seats are sometimes encountered. These fixing seats respectively pass two fastening bolts symmetrically from the inside to the outside from the inside of the "concave"-shaped gap, and the fixing nuts are used on the outside. fasten. The ends of the two fastening bolts are arc-shaped slotted countersunk head structures. The slots go from the outside to the center along with the arc length from shallow to deep. The two ends of the arc are the shallowest and the middle of the arc is the deepest.

When the fixing seat is in a narrow space and only the space for applying force is available in the front, it is not enough to use a short flat-blade screwdriver on the heads of the two fastening bolts, and there is no room for using a long flat-blade screwdriver, and the edge of the flat-blade screwdriver is in line with the arc. The character slots cannot be fully fitted and cannot be easily tightened. In this case, when disassembling the fixing seat, the T-shaped sleeve is usually used to turn the fixing nut on the outside to take out or tighten the fastening bolt. However, when the fixing nut is turned on the outside, it is easy to cause the fastening bolt on the inside Follow up with the fixed nut simultaneously. At this time, it is necessary to use tools to fix the fastening bolts on the inside to prevent follow-up. However, the current general-purpose tools are difficult to achieve the fixing effect, and the staff can only force it to be fixed, which is easy to cause damage to the slot of the fastening bolt.

Utility model content

The purpose of the utility model is to provide an anti-following disassembly and assembly tool for narrow spaces, which can conveniently and quickly lock the fastening bolts inside the disassembly and assembly fixing seat to improve work efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions:

An anti-following disassembly tool for narrow spaces, including a jack bolt, a lock nut and a barrel, the center of the barrel is provided with an axial through hole, and the two ends of the through hole are respectively provided with left-handed threads in opposite directions. and right-handed thread, two ejector bolts are provided, which are respectively fitted on both ends of the barrel through threaded connections, and the outer end of the ejector bolt far away from the barrel is provided with a protruding arc-shaped flat head, and the lock The tight nuts are sleeved on the jack bolts and are respectively arranged between the cylinder body and the flat head.

In the above-mentioned anti-following disassembly tool for narrow spaces, the middle part of the cylinder is radially penetrated with a cross-shaped braking hole.

In the above-mentioned anti-following disassembly tool for narrow spaces, the two ends of the cylinder body are respectively fixedly connected with a boss, and the center of the boss is axially penetrated with an internal thread that cooperates with the ejector bolt, and the outer ring of the boss is Set in a hexagonal shape for easy wrench grip.

In the above-mentioned anti-following disassembly tool for narrow spaces, the outer surface of the cylinder is provided with a knurled anti-skid layer that increases friction and is easy to hold.

The beneficial effects of the utility model are:

The anti-following disassembly tool described in the utility model is used in the narrow space of the concave fixing seat, which is convenient and fast to fix the fastening bolts on the inner side, improves the work efficiency, and prevents the fastening bolts from being damaged by the flat groove during the disassembly process. losses, reducing costs.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

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

Fig. 2 is the front view of cylinder;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is the front view of jack bolt;

FIG. 5 is a top view of FIG. 4 .

The list of each label in the figure is: 1, ejector rod bolt, 2, lock nut, 3, cylinder body, 4, brake hole, 5, boss, 6, straight plug, 7, knife relief groove.

detailed description

Referring to FIG. 1 , the anti-following disassembly tool for narrow spaces described in the present invention includes a jack bolt 1 , a lock nut 2 and a barrel 3 . The locking nut 2 and the cylinder body 3 are mutually fitted and provided in two sets, which are respectively arranged at both ends of the cylinder body 3 , and the ejector bolt 1 , the locking nut 2 and the cylinder body 3 are arranged coaxially.

The structure of the cylinder 3 is shown in Figure 2 and Figure 3. The cylinder 3 is a cylinder with an axial through hole coaxially opened in the center, and threads are arranged symmetrically on the outer two ends of the through hole respectively. In the opposite direction, one end has a left-hand thread; the other end has a right-hand thread. Between the left-handed thread and the right-handed thread, and in the middle of the through hole, a knife relief groove 7 is set, and the knife relief groove 7 separates the left-handed thread from the right-handed thread, so that when the cylinder body 3 rotates, the ejector bolts 1 at both ends realize Simultaneously screw in or out.

An anti-slip layer is provided on the outer surface of the cylinder body 3, and the anti-slip layer is knurled, which is used to increase the friction force and facilitate the staff to apply force to hold and fix it. The middle part of the cylinder 3 is provided with a brake hole 4 along the radial direction of the cylinder. The brake hole 4 is a cross structure. In the process of using the utility model, a length of brake hole 4 can be worn Sufficient round rod, the other end of the round rod is stuck against the installation body through auxiliary equipment, and a gasket is set between the contact part of the round rod and the installation body, so that it can be easily locked and fixed to prevent the fixing seat from The two symmetrical fastening bolts move at the same time, and the set gasket prevents damage to the installation body when the round rod is stressed.

The structure of the ejector bolt 1 is shown in FIG. 4 and FIG. 5 , two ejector bolts 1 are provided, and are coaxially mounted on both ends of the cylinder body 3 . The threads on the screw rods of the two ejector bolts match the threads at both ends of the through hole of the cylinder body 3, one of the ejector bolts is a left-handed thread; the other ejector bolt is a right-handed thread. The outer end of the jack bolt 1 away from the cylinder 3 is provided with a slotted plug 6, the shape of the slotted plug 6 corresponds to the slot of the fastening bolt on the fixing seat, and is an outwardly convex arc structure.

There are two locking nuts 2, which are respectively fitted on corresponding jack bolts. The lock nut 2 is located between the barrel body 3 and the straight plug 6 .

A boss 5 is respectively fixedly connected between the two ends of the cylinder 3 and between the cylinder 3 and the lock nut. The center of the boss 5 is axially penetrated with an internal thread that cooperates with the ejector bolt 1 . The ring is set in a hexagonal shape, which is convenient for the wrench to hold.

The use process of the present utility model is:

When the fixing seat is disassembled, if the fastening bolt and the fixed nut follow-up and cannot be tightened or loosened, the utility model can be used.

First, according to the distance between the fastening bolts at both ends of the fixing seat, adjust the length of the jack bolts 1 protruding from both ends of the cylinder body 3, and ensure that the protruding lengths of the jack bolts 1 at both ends are basically the same during adjustment. Then hold the anti-skid layer of the cylinder body 3, first insert the jack bolt at one end into the slot of the fastening bolt on the side of the fixing seat and tighten it, and then adjust the angle of the jack bolt at the other end 6, so that After aligning it with the fastening bolt slot on the other side, move the cylinder body 3 appropriately so that the flat head 6 enters the fastening bolt slot a little, and rotate the cylinder body 3 so that the ejector bolts at both ends are extended outward at the same time. Until the slotted plug 6 at the outer end of the jack bolt enters the slotted slot of the fastening bolt and tightens.

Afterwards, respectively screw the lock nuts in the locking direction of the jack bolts, that is, the direction close to the boss 5, until they cannot be screwed by hand, and then select two open-end wrenches, one of which holds the boss, Another open-ended wrench clamps the lock nut, and tightens the lock nut and the boss that are close together, so that the ejector rod bolt 1 is locked on the cylinder body 3, so that the utility model is integrated, and no relative sports. Now the utility model and the fastening bolts on the fixing seat are connected to each other, only need to fix the utility model to ensure that the fastening bolts will not follow up when the fixing nuts on the outside are screwed.

When the follow-up power is small, the anti-skid layer of the cylindrical body 3 can be held with bare hands to prevent rotation. When the follow-up power is large, you can wear a long enough flat-head screwdriver or only use a common round rod in the brake hole 4, and the other end of the round rod is stuck against the position in contact with the body of the fixed seat. Gaskets are arranged to prevent damage to the body, so that the purpose of anti-following lock fastening bolts can be achieved.

After the fixing nuts on the outside of the fixing seat are disassembled and assembled, take off the screwdriver or round bar, loosen the lock nuts at both ends with an open-ended wrench, and rotate the cylinder 3 so that the ejector bolts at both ends shrink inward at the same time. The utility model can be taken off from the fixing seat by breaking out of the slot of the fastening bolt.

Claims (4)

1. An anti-following disassembly tool for narrow spaces, characterized in that it includes a jack bolt (1), a lock nut (2) and a cylinder (3), and the center of the cylinder (3) is set An axial through hole, the two ends of the through hole are respectively provided with left-handed threads and right-handed threads with opposite rotations, and two ejector bolts (1) are provided, which are respectively fitted on both ends of the cylinder (3) through threaded connection , the outer end of the ejector bolt (1) away from the barrel (3) is provided with a protruding arc-shaped flat head (6), and the lock nut (2) is set on the ejector bolt (1), respectively Between cylinder body (3) and straight plug (6). 2. The anti-following disassembly tool for narrow spaces according to claim 1, characterized in that, the middle part of the cylinder (3) is radially penetrated with a brake hole (4) of a cross structure. 3. The anti-following disassembly tool for narrow spaces according to claim 2, characterized in that, the two ends of the cylinder (3) are respectively fixedly connected to a boss (5), and the boss ( 5) The center axially runs through the inner thread that cooperates with the jack bolt (1), and the outer ring of the boss (5) is set as a hexagon that is convenient for wrench clamping. 4. The anti-following disassembly tool for narrow spaces according to claim 3, characterized in that an anti-skid layer is provided on the outer periphery of the cylinder (3) to increase friction and facilitate gripping.