RU2804390C1 - Manual impact tool of all-purpose action (versions) - Google Patents

Abstract

FIELD: manual tools.

SUBSTANCE: manual impact tools used in industry and everyday life, depending on the type of working body, for breaking ice and compacted snow on road surfaces and other surfaces, for breaking asphalt surfaces, limestone, as a punch pin, bench chisel, bore bit, tools for cutting meat, etc. Manual impact tool contains a tube installed around a metal handle having a working body in the form of a scraper at the end, and a damper at the other end, consisting of a spring rigidly fixed at one end to the striker of the metal handle, and at the other end to the handle, and the damper itself placed inside a tube having free play around the end of the handle and at the same time a metal handle rigidly fixed to the poll, or free movement around the poll of the metal handle and at the same time rigidly fixed to the end of the handle, and the outer part of the tube is made of rubberized material that prevents slipping.

EFFECT: expanding the scope of technical means of manual impact tools, as well as in simplifying the work with the tool and reducing the harmful effect on the joints of the territory cleaner's hands.

7 cl, 4 dwg

Description

The invention relates to hand-held impact tools and can be used in industry and everyday life, depending on the type of working tool, to destroy ice and compacted snow on road surfaces and other surfaces, to destroy asphalt surfaces, limestone rocks, as a punch, a metal chisel , chisels, meat cutting tools, etc.

An ice pick-scraper (for example, https://leroymerlin.ru/product/ledorub-topor-160-mm-16717321/) is a necessary equipment for the production process for removing icing of varying degrees, ice and hard, compressed compacted layers of snow by workers (cleaners territories).

An ice ax scraper is made of metal, having sufficient weight to provide, on the one hand, the necessary impact force for effective clearing (breaking ice or snow), and on the other hand, allowing the work to be carried out for a long time, clearing the maximum area.

Structurally, the ice ax-scraper consists of a rectangular or trapezoid scraper made by stamping metal, which is connected by a permanent connection (welding) to a metal handle (handle L=1300 mm, f=25 mm).

During its operation there are the following disadvantages:

1) There is a significant risk of injury to the joints of the hands of the territory cleaner when clearing (breaking ice) of the serviced area. Thus, making a vertical reciprocating movement with an ice ax, the mechanical vibration arising from the force processes of chipping ice negatively affects the mechanoreceptors of the skin, which are located in the (epi)dermal and subcutaneous tissues of the skin of the fingers and hands, which, taking into account the effects of cold (temperature causes a constriction of blood vessels fingers and lowers the temperature of the skin of the fingers) leads to tactile depression and a gradual reduction in sensory perception, loss of manipulative ability and, negatively affecting the worker’s production process, increases the risk of injury due to accidents.

2) When clearing ice from paving slabs, there is a significant risk of damage due to the lack of compensating devices or devices during the production process for removing icing from sidewalks and walkways.

3) The device requires significant physical exertion.

4) Has low labor productivity.

The closest analogue is a hand-held impact tool (patent RU 49484 U, publ.: November 27, 2005), containing a tubular body, coaxially installed in it, coaxially located working body and striker, characterized in that it is equipped with a rod placed in the body with the possibility of its movement relative to the body, the working element is fixed at one end of the rod, and the firing pin is rigidly fixed in the body with the possibility of interaction with the other end of the rod.

The prototype also has disadvantages:

1) There is a significant risk of injury to the joints of the hands of the territory cleaner when clearing (breaking ice) of the serviced area. Thus, making a vertical reciprocating movement with an ice ax, the mechanical vibration arising from the force processes of chipping ice negatively affects the mechanoreceptors of the skin, which are located in the (epi)dermal and subcutaneous tissues of the skin of the fingers and hands, which, taking into account the effects of cold (temperature causes a constriction of blood vessels fingers and lowers the temperature of the skin of the fingers) leads to tactile depression and a gradual reduction in sensory perception, loss of manipulative ability and, negatively affecting the worker’s production process, increases the risk of injury due to accidents.

2) The device requires significant physical exertion.

3) Has low labor productivity.

4) The device is significantly heavier than a conventional ice scraper due to the presence of a full-length tubular body, guide sleeve and locking ring.

5) If ice particles get inside the tubular body, jamming may occur.

The objective of the invention is to eliminate the disadvantages of known solutions.

The technical result consists in expanding the arsenal of technical means of hand-held percussion instruments, as well as in simplifying the work with the tool, reducing the harmful effects on the joints of the hands of the territory cleaner.

The specified technical result is achieved due to the fact that a manual percussion tool is claimed, containing a tube installed around a metal handle having at the end a working body in the form of a scraper, and at the other end a damper, characterized in that the damper is made of a spring rigidly fixed one end on the striker of the metal handle, and the other end to the handle, the damper itself is placed inside a tube having:

- free movement around the end of the handle and at the same time a metal handle rigidly attached to the striker,

or

- free movement around the striker of the metal handle and at the same time rigidly fixed to the end of the handle,

Moreover, the outer part of the tube is made of rubberized material that prevents slipping.

It is acceptable that the fastening of the ends of the spring to the handle and striker of the metal handle is made in the form of a welded joint.

It is acceptable that the ends of the spring are attached to the handle and striker of the metal handle using a bolted connection.

It is acceptable that the tube is attached to the striker of a metal handle by welding the inner diameter of the tube and the end of the striker of the handle.

It is acceptable that the tube is fastened to the striker of a metal handle by connecting with bolts and nuts through through holes in the body of the tube and at the end of the striker of the handle.

Preferably, the working body is made in the form of a scraper, or a crowbar, or an ax.

Brief description of the drawings.

In fig. Figure 1 shows the device of the invention (sectional view).

In fig. Figure 2 shows the device of the invention (with a T-shaped stop).

In fig. Figure 3 shows the device of the invention (with a stop in the form of a handle for the handle).

In FIG. Figure 4 shows an example of attaching a tube to the striker of a metal handle with a bolted connection (not the entire device is shown - without part of the handle and without the working element).

In the drawings: 1 - handle, 2 - working element, 3 - handle striker, 4 - spring, 5 - tube, 6 - end of the handle, 7 - end of the handle striker, 8 - T-shaped handle stop, 9 - handle in the form of a handle , 10 - through holes, 11 - bolt, 12 - nut.

Carrying out the invention

A hand-held percussion tool (see Fig. 1) according to the invention contains a tube installed around a metal handle 1, which has a working body 2 at the end, for example, in the form of a scraper, and a damper at the other end. In addition to the scraper, the working body 2 can be made in the form of a crowbar or a hatchet.

What is new is that the damper is made of a spring 4, rigidly fixed with one end to the end 7 of the striker 3 of the metal handle, and with the other end to the end 6 of the handle 1.

The damper itself is placed inside the tube 5, which has free movement around the end 6 of the handle 1 and at the same time is rigidly attached to the striker 3 of the metal handle.

Or the damper is placed inside the tube 5, which has free movement around the striker 3 of the metal handle, but then is rigidly fixed to the end 6 of the handle 1.

Attachment to the striker 3 of the tube 5 (or, in another embodiment, to the end 6 of the handle 1) can be done, for example, by welding the inner diameter of the tube 5 and the end 7 of the striker 3 of the handle, or the end 6 of the handle 1, respectively (not shown in the drawings) shown).

Also, the above-described fastening can be realized by connecting with bolts 11 and nuts 12 through through holes 10 in the body of the tube 5, and, as shown in the example of Fig. 4, at the end 7 of the striker there are 3 handles. This, in turn, simplifies the work with the tool, since you can disassemble the device and, if necessary, replace, lubricate or clean the spring, while with a welded connection, particles of ice and dirt can get inside the tube, which, while working with the tool, can fly down onto the shoes and the tool user's clothing, contaminating it. And if the spring rusts, replacing it during a welded connection will be problematic or impossible. In addition, if the spring is attached to the striker 3 and to the handle 1 using a bolted connection (not shown in the drawings), then the spring can be changed to either one with stronger or weaker resistance, depending on the type of work with the device .

The outer part of the tube should be made of rubberized material that prevents slipping, since it is the one that is grasped with one hand.

The handle itself can be of any convenient shape. In FIG. 2 shows an example of a T-shaped handle 8. And in FIG. Figure 3 shows an example of making a handle in the form of a handle 9.

Below is a description of how the tool works when used as an “ice ax.”

Place the tool on the formed ice with a chisel in the direction of the zone into which it is necessary to strike. The rubberized surface of the tube 5 is grabbed with one hand, and the handle with the other hand, and raised up to the height required for the most effective strike. The impact is made by sharply lowering the device down. The striker 3 (weighting agent) transfers its energy to the spring 4, which transfers its energy to the handle 1 and the chopping scraper of the working body 2 cuts into the ice.

If the ice is not completely chipped, these steps are repeated until the goal is reached and the ice is broken off.

Thanks to spring 4, which provides damping upon impact, the harmful impact on the joints of the territory cleaner’s hands is reduced, the person spends less force on impacts, and the work becomes more comfortable and simpler.

Similar actions are carried out when using the tool as a jackhammer, only the impacts can be without strongly lifting the tool up, but more frequent.

Based on the proposed design of the tool, it is possible to make, for example, an ax for cutting frozen products (meat, bones, etc.), while a targeted blow will not crush the bone in many places, as happens when cutting meat with a regular ax.

The versatility of the device allows it to be used in various fields:

- cleaning the surface from snow and ice;

- dismantling brickwork;

- destruction of asphalt and concrete surfaces, cinder blocks and limestones;

- caulking of tow during the construction of houses.

Claims (7)

1. A hand-held percussion tool containing a tube installed around a metal handle having a working element at the end, and a damper at the other end, characterized in that the damper is made of a spring, rigidly fixed at one end to the striker of a metal handle, and at the other end - to the handle, the damper itself is placed inside a tube that has free movement around the end of the handle and at the same time is rigidly attached to the striker of a metal handle, and the outer part of the tube is made of rubberized material that prevents slipping. 2. A hand-held percussion tool containing a tube installed around a metal handle having a working element at the end, and a damper at the other end, characterized in that the damper is made of a spring, rigidly fixed at one end to the striker of a metal handle, and at the other end - to the handle, the damper itself is placed inside a tube that has free movement around the striker of the metal handle and is rigidly attached to the end of the handle, and the outer part of the tube is made of rubberized material that prevents slipping. 3. A hand-held percussion tool according to claim 1 or 2, characterized in that the fastening of the ends of the spring to the handle and striker of the metal handle is made in the form of a welded joint. 4. A hand-held percussion tool according to claim 1 or 2, characterized in that the ends of the spring are attached to the handle and striker of the metal handle using a bolted connection. 5. A hand-held impact tool according to claim 1, characterized in that the tube is attached to the striker of the metal handle by welding the inner diameter of the tube and the end of the striker of the handle. 6. A hand-held impact tool according to claim 1, characterized in that the tube is attached to the striker of the metal handle by connecting with bolts and nuts through through holes in the body of the tube and at the end of the striker of the handle. 7. A hand-held percussion tool according to claim 1 or 2, characterized in that the working element is made in the form of a scraper, or a crowbar, or an ax.

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