KR20130067742A

KR20130067742A - Manhole

Info

Publication number: KR20130067742A
Application number: KR1020110134617A
Authority: KR
Inventors: 남두호
Original assignee: 한국주철산업주식회사
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2013-06-25

Abstract

The present invention relates to a manhole cover locking device, and more particularly, by tightly fitting the jaws of the manhole support and the manhole cover in the form of a vise bite to fix the manhole cover always intact, regardless of deformation or continuous external impact. It relates to a bite lockable manhole cover lock to maintain.
The present invention bite lock manhole cover locking device,
Inward stepped jaw (11) is formed on the inner bottom side of the periphery of the manhole cover (10),
Rotating shaft (12) having a manipulator (13) rotatably mounted at one or a plurality of places around the manhole cover (10) and rotatably operated at its upper end;
A plurality of upper and lower rotary clamps 14, 15 are spaced up and down at the lower end of the rotary shaft 12, the upper rotary clamp 14 is an inward step 11 of the manhole cover 10 Corresponding to the upper portion, the lower rotatable clamp 15 corresponds to the lower portion of the manhole support latching jaw 21, the opposite surface is formed in the inclined surface 16 in the symmetrical direction of the inside of the manhole cover 10 It is characterized in that the inclined jaw 11 and the locking jaw 21 of the manhole support to be fixed.

Description

Bite Lock Manhole Cover Lock {Manhole}

The present invention relates to a manhole cover locking device, and more particularly, by tightly fitting the jaws of the manhole support and the manhole cover in the form of a vise bite to fix the manhole cover always intact, regardless of deformation or continuous external impact. It relates to a bite lockable manhole cover lock to maintain.

In general, the manhole cover locking device is introduced to prevent theft while preventing the occurrence of a shock sound generated when the manhole cover is abnormally detached by the vehicle or the vehicle passes.

Manhole cover locking device uses a variety of principles, but only a few kinds of practical applications in the field.

For example, there is an elastic manhole locking device using a spring or elastic doctile material, and there is a screw-locking locking device using bolts and nuts. There is a rotation lock type locking device that is locked to the jaw.

Each of the locking devices has unique features, but the present invention is directed to a rotation lock type locking device.

As described above, the conventional locking clasp locking device is provided such that the half moon clasp is rotatably installed at the edge of the manhole cover, and an operation part is formed to rotate using a jig at the upper end of the shaft exposed to the upper manhole cover. , The half moon clasp has a structure in which a mandrel is closely attached to the manhole support by forming an inclined surface on the upper surface to be in close contact with the lower portion of the locking jaw of the manhole support during rotation. In addition, irregularities were formed on the inclined surface of the half moon lock to promote the close contact between the inclined surface of the half moon lock and the locking jaw of the manhole support.

Conventional rotation lock type locking device having such a structure, while the manhole cover is installed and the initial locking state of the locking lock to maintain a good lock state, but after a certain period of time, the noise occurs, the locking state is poor do.

The reason for this is that the inclined surface of the half moon clasp is spaced apart from the lower part of the mandrel of the manhole support, so that the manhole cover and the clasp itself are shaken or shaken by an external impact, and the noise is generated. Is a phenomenon that becomes poor.

The reason why the half-moon clasp is separated from the lower part of the mandrel of the manhole support is due to the continuous external shock and the deflection due to the fatigue load of the manhole cover. That is, as the material of the manhole cover is manufactured with a high strength doctile while having a low weight, deformation is generated by continuously applying a high load, thereby causing sagging.

Deflection of the manhole cover, that is, if the top plate of the manhole cover is drooped because the position of the half moon-shaped clasp hanging thereon is moved to the lower portion of course, the phenomenon occurs that is separated from the locking jaw of the manhole support.

In more detail, if the latch is rotated with a greater force in contact with the lower part of the mandrel of the manhole support, it will dig into the lower part of the hanger by the inclination angle of the inclined surface, and the shaft will be lowered by the height difference lowered by the inclination angle. In addition, the upper end of the shaft is to lower the upper surface of the cap, and eventually the lower end of the integrated manhole cover edge is in close contact with the engaging jaw face of the manhole support. The order of force transmission is followed by the brace, the top of the shaft, the top of the manhole cover, and the bottom of the manhole lid periphery.

In this process, if the deflection occurs in the upper plate of the manhole cover, the upper end of the shaft is spaced apart from the upper plate, so the force is not transmitted. Therefore, the lower end of the manhole cover is the force for close contact with the locking jaw face of the manhole support. Will not be delivered.

The present invention was devised to solve the conventional problems as described above, the object of which is that the upper surface of the manhole cover is deformed due to the continuous dynamic load by the vehicle is not affected even if the sag occurs, the lock state of the manhole cover completely To provide a retaining lockable manhole cover lock.

That is, even if the clamp itself has a structure that is rotatably suspended on the manhole cover, the contact portion of the manhole cover and the manhole support is held in the form of a vise so that the catch itself directly bites the bottom of the manhole cover and the mandrel of the manhole support. Therefore, even if sagging of the upper manhole cover occurs, it is to be able to maintain a good locking state without being affected.

The present invention bite lock manhole cover locking device for achieving the above object,

On the inner side of the lower periphery of the manhole cover to form an inward step,

A rotating shaft which is rotatably mounted in one or a plurality of places around the manhole cover and has an operation unit capable of rotating operation at an upper end thereof;

Comprising a plurality of cam-shaped rotary clamps spaced up and down at the lower end of the rotary shaft, the upper rotary clamp corresponds to the upper inward step of the manhole cover, the lower rotary clamp corresponds to the lower manhole support latch, the opposite surface It is achieved by forming an inclined surface in a symmetrical direction so as to bury the inward end step of the manhole cover and the locking step of the manhole support.

In addition, the present invention bite lockable manhole cover locking device is configured to maintain a gap between each other between the top and bottom rotation locking, and the upper and lower rotation locking of the upper and lower rotation locking the inward step of the manhole cover and the manhole support It is achieved by bubbling the locking jaw of the elastic chuck.

In the present invention bite lock manhole cover locking device, because the rotary clamp is fixed directly bite the manhole support and the manhole cover close to the vise principle, the bite without being affected by the drooping phenomenon of the top plate of the manhole cover due to external continuous impact or fatigue load Since the state is maintained, there is an advantage of ensuring a good lock state.

Particularly, when the elastic part is formed on the upper and lower parts of the upper / lower rotation type clamp, the elastic part has some flexibility, so that the surface contact is not a line contact when fixing the inward end step and the locking step of the manhole cover and the manhole support. Since the bite is possible, there is an advantage of maintaining a better lock state.

Figure 1 is a perspective view of the main portion showing the structure of the present invention bite lock manhole cover locking device.
Figure 2 is a cross-sectional view showing the main structure of the present invention bite lock manhole cover locking device.
Figure 3 is a sectional view showing the main portion of the structure of the present invention bite lock manhole cover locking device.
Figure 3 is a longitudinal sectional view of the main part showing a locked state of the present invention bite lock manhole cover locking device.
Figure 4 is a sectional view showing the main portion of the clasp structure provided with an elastic portion of the present invention bite lock manhole cover locking device.

Hereinafter, with reference to the accompanying drawings, the structure of the present invention bite lock manhole cover locking device will be described in detail.

1 is a perspective view of the main portion showing the structure of the present invention bite lock manhole cover locking device, Figure 2 is a cross-sectional view of the main portion showing the structure of the present invention bite lock manhole cover locking device, Figure 3 Fig. 4 is a sectional view showing the main part of the structure of the locking device, and Fig. 4 is a sectional view showing the main part of the clasp structure provided with the elastic part of the present invention.

As shown in FIG. 2, reference numeral 10 is a manhole cover, reference numeral 20 is a manhole support, and 21 is a seating jaw on which a manhole cover is seated. In this case, the seating jaw performs a latching jaw function in which the latch is latched in addition to a function of seating the manhole cover 10, hereinafter, the seating jaw 21 is called.

Manhole cover locking device of the present invention can be installed at least one or more places around the manhole cover 10, the most stable number of two or three is preferably installed in a bidirectional symmetrical position or equilateral triangle structure.

Rotating fasteners form a half-moon or arc structure, as shown in Figure 1, and rotates with the rotating shaft about the rotating shaft 12, the rotating shaft 12 is rotatably coupled to the manhole cover (10). In particular, the upper end of the rotating shaft 12 is formed using a jig using a jig, cross-shaped groove or polygonal head 13 to enable a strong rotational operation and there is a hook around the top can be rotated in the shaft hole of the manhole cover The manhole cover 10 is coupled in a structure that does not separate from the top / bottom.

In addition, the up / down rotation latch is made of a semi-circle or half moon shape and the opposing surface of the upper latch and the lower latch is formed in the inclined surface 16 at an angle symmetric with each other. In particular, the play of one end has a larger gap than the sum of the thicknesses of the locking jaw 21 of the manhole support 20 and the inward end jaw 11 of the manhole cover 10, and the other end is the locking jaw 21 and the inner end. The interval is narrower than the sum of the thicknesses of the tip ends 11. Accordingly, when the upper and lower rotary latches 14 and 15 are rotated in the forward direction, the gap is rotated from the larger side to the narrower side so that the locking jaw 21 and the manhole cover 10 of the manhole support 20 positioned therebetween. The inward step 11 is inevitably fixed, and when rotated in the reverse direction, it can escape from the bite state.

Therefore, when the operation unit 13 provided on the upper end of the rotating shaft 12 using the jig in the forward direction, the upper and lower rotary clamps 14 and 15 rotating integrally therewith rotate the manhole cover 10. When the locking jaw 21 of the inward step 11 and the manhole support 20 is squeezed tightly, such as a vise, the manhole cover 10 and the manhole support 20 are locked to a unitary degree.

In this state, even if the upper plate of the manhole support 20 deflection deformation occurs, the upper / lower rotary clamp (14, 15) directly bites the inward step 11 and the locking jaw 21 to fix the deflection of the upper plate Regardless of the deformation, it will maintain a good locking state.

On the contrary, when the jig is rotated in the reverse direction, the upper and lower rotary clamps 14 and 15 rotate inversely together with the rotary shaft 12 to catch the inward step 11 and the manhole support 20 of the manhole cover 10. Since the jaw 21 is removed from the manhole cover 10 is freed from the manhole support 20 to be opened.

On the other hand, the upper and lower rotary clamps (14, 15) to form a separate body from the rotary shaft 12, it is possible to move but the rotation is integrally rotated, the upper and lower rotary clamps (14) ( A spring or elastic rubber is formed on the upper part of the upper rotary clamp 14 and the lower part of the lower rotary clamp 15 to form a gap holding unit 18 between the upper and lower rotary clamps 14. Each elastic part 19, such as (synthetic resin type), may be provided so as to apply an elastic force in a narrowing direction. At this time, the elastic support (s) is configured on the rotating shaft so that the elastic portion is fixed.

In this case, the upper and lower rotary clamps 14 and 15 are rotated by the rotation in the forward direction, so that the inward step 11 of the manhole support 20 and the locking jaw 21 of the manhole support 20 are buried. When fixing, the upper and lower rotary clamps 14 and 15 can be completely lifted on the inward end jaw 11 and the locking jaw 21 by the elastic force of the elastic portion 19. This is as if the clamp is made of a non-elastic metal is pushed by the surface contact beyond the limit possible only in the line contact or point contact bite state.

Therefore, the bite state is more perfect, and even if an impact is applied from the outside, no loosening occurs, so that a good locking state can be maintained for a long time.

In particular, the concave and convexity may be formed on the inclined surface 16 so that the bite state due to the frictional force enhancement may be maintained even better.

10-manhole cover 11-inwardly facing step 12-axis of rotation
13-Control Panel 14-Upper Swivel Clamp 15-Lower Swivel Clamp
16-Slope 18-Spacing 19-Elastic
20-Manhole Support 21-Jam Jaw

Claims

Inward stepped jaw (11) is formed on the inner bottom side of the periphery of the manhole cover (10),
Rotating shaft (12) having a manipulator (13) rotatably mounted at one or a plurality of places around the manhole cover (10) and rotatably operated at its upper end;
A plurality of upper and lower rotary clamps 14, 15 are spaced up and down at the lower end of the rotary shaft 12, the upper rotary clamp 14 is an inward step 11 of the manhole cover 10 Corresponding to the upper portion, the lower rotatable clamp 15 corresponds to the lower portion of the manhole support latching jaw 21, the opposite surface is formed in the inclined surface 16 in the symmetrical direction of the inside of the manhole cover 10 The bite lock type manhole cover locking device, characterized in that to fix the incline chin (11) and the locking jaw (21) of the manhole support.

The method of claim 1,
A gap holding unit 18 is formed between the upper and lower rotary clamps 14 and 15, and the upper and lower rotary clamps 14 and 15 are disposed on each other. The bite lock type, characterized in that the elastic portion 19 to apply an elastic force in the direction to the bite-locked inward step 11 of the manhole cover 10 and the locking jaw 21 of the manhole support in an elastic bite type Manhole cover lock.