Anti-skid shoe capable of walking on steel grating

Abstract

The invention relates to an antiskid shoe capable of walking on a steel grating, which comprises a shoe body and a sole, the sole is arranged at the lower part of the shoe body, and more than one group of telescopic spikes are arranged at the bottom of the sole; each telescopic spike comprises a shell and a permanent magnet column movably matched with the interior of the shell, a tension spring is connected between the inner top wall of the shell and the permanent magnet column, the permanent magnet column is pushed by the elastic force of the tension spring to tend to stretch into the shell, and the permanent magnet column and the steel grating are magnetically matched to stretch out of the shell to clamp gaps of the steel grating. The permanent magnet columns are hidden in the shell in a normal state through the tension springs, so that the shoe sole has no protrusions in the normal state, and walking on the normal ground is facilitated; when a user walks on the steel grating plate, the permanent magnet columns and the steel grating plate are magnetically attracted, the permanent magnet columns are pulled out from the interior of the shell, the permanent magnet columns are inserted into gaps of the steel grating, and shoe soles are prevented from slipping.

Description

Technical Field

[0001] The invention relates to the technical field of anti-skid shoes, in particular to an anti-skid shoe for walking on a steel grating. Background Art

[0002] Steel grating plate is also called grille plate, steel grating, steel grille, etc. Steel grating is a steel product made of flat steel arranged crosswise at a certain interval and cross bars, and welded into a square grid in the middle. According to the different uses of steel grating plates, it is divided into three commonly used types of steel grating plates: steel structure platform grating plates, steel ladder stair treads, and steel grating ditch covers (drainage ditch covers, water grates).

[0003] Steel gratings are widely used in factories due to their light weight, strong bearing capacity, and good drainage. In particular, they are widely used in boilers of power plants as supporting platforms and stair treads. However, steel gratings have a fatal disadvantage. Especially in rainy and snowy weather, they become very slippery (according to relevant data, the dynamic friction coefficient between steel and snow is only 0.02). When people walk on them, they are very likely to slip and thus become dangerous.

[0004] Therefore, protruding spikes are usually designed on the soles to increase the friction when walking on the steel grating;

[0005] For example, the patent publication number CN108402574A discloses a "anti-skid shoe suitable for walking on ice and snow", which includes an upper, a sole and an anti-skid spike mechanism. The retractable anti-skid spike structure greatly increases the grip, effectively improves the anti-skid effect of the sole, and has a certain buffering effect, which improves the comfort when walking.

[0006] For example, patent announcement number CN221554810U discloses an "anti-slip sole with adjustable spikes". By setting a mounting groove on the front heel surface of the sole body, and setting an adjustable spike surface including a control surface and a movable spike surface in the mounting groove, when encountering bad weather or steep terrain, the control surface is flipped over, so that a number of limiting protrusions are placed in the perforated sink groove to push out the spikes.

[0007] However, the spikes of existing spike shoes are fixed or the height is manually adjusted, and they cannot be automatically extended or retracted, and they cannot be used for walking on steel grilles covered with snow. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides an anti-skid shoe for walking on a steel grating to solve the above problems.

[0009] The present invention provides the following technical solutions:

[0010] An anti-skid shoe for walking on a steel grating, comprising a shoe body and a sole, wherein the lower part of the shoe body is provided with the sole, and the bottom of the sole is provided with one or more sets of telescopic spikes;

[0011] The telescopic shoe spikes include an outer shell and a permanent magnetic column that movably cooperates inside the outer shell. A tension spring is connected between the inner top wall of the outer shell and the permanent magnetic column. The elastic force of the tension spring pushes the permanent magnetic column to extend into the inner part of the outer shell. The permanent magnetic column and the steel grille magnetically cooperate to extend to the outside of the outer shell and clamp the gap of the steel grille.

[0012] Preferably, the sole comprises an upper sole layer and a lower sole layer, and a plurality of groups of uniformly arranged resetting elastic members are provided between the upper sole layer and the lower sole layer.

[0013] Preferably, the telescopic spikes are arranged on the lower layer of the sole.

[0014] Preferably, the permanent magnetic column comprises an upper column and a lower column, and the lower end of the upper column is universally connected and matched with the upper end of the upper column.

[0015] Preferably, an elastic telescopic limit rod is movably connected to the upper column, the telescopic end of the elastic telescopic limit rod is abutted and matched with the outer surface of the upper end of the lower column, and the fixed end of the elastic telescopic limit rod is fixed to the upper layer of the sole.

[0016] Preferably, a limiting groove is provided on the upper end surface of the lower column, and the telescopic end of the elastic telescopic limiting rod is adapted to the limiting groove.

[0017] Preferably, the elastic force of the tension spring is greater than the elastic force of the elastic telescopic limit rod tending to extend.

[0018] Preferably, a limiting piece is provided at the end of the permanent magnetic column, and a limiting protrusion is provided on the inner side wall of the shell, and the limiting piece and the limiting protrusion cooperate to limit the permanent magnetic column from completely leaving the inside of the shell.

[0019] Preferably, a sealing ring is provided between the outer wall of the permanent magnet column and the inner wall of the shell.

[0020] Preferably, the permanent magnet column is made of neodymium iron boron strong magnetic material.

[0021] The present invention has the following beneficial technical effects:

[0022] The present invention can greatly increase the friction coefficient between the sole and the steel grating plate in rainy and snowy weather, thereby increasing safety.

[0023] The present invention hides the permanent magnetic column inside the shell in a normal state through a tension spring, so that the sole has no protrusion in a normal state, which is conducive to walking on normal ground;

[0024] When walking on the steel grating plate, the permanent magnetic column is pulled out from the shell through the magnetic attraction between the permanent magnetic column and the steel grating plate, so that the permanent magnetic column is inserted into the gap of the steel grating to prevent the sole from slipping;

[0025] The permanent magnetic column includes an upper column and a lower column that are universally connected. When the foot is lifted from the steel grating plate, the lower column can be tilted at a certain angle to facilitate extraction from the gap in the steel grating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 is a three-dimensional cross-sectional view of the telescopic shoe spike of the present invention;

[0028] Figure 3 It is a schematic diagram of the sole structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the permanent magnetic column of the present invention;

[0030] Figure 5 It is a schematic diagram of the lower column structure of the present invention.

[0031] The reference numerals in the figure are:

[0032] 1. Shoe body; 2. Sole; 3. Retractable spikes;

[0033] 21. Upper layer of sole; 22. Lower layer of sole; 23. Reset elastic member; 24. Elastic telescopic limit rod;

[0034] 31. housing; 311. limiting protrusion; 32. tension spring; 33. limiting member; 34. permanent magnetic column; 35. sealing ring;

[0035] 341. Upper cylinder; 342. Lower cylinder. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1:

[0038] A non-slip shoe for walking on steel gratings, such as Figure 1-2 As shown:

[0039] The shoe comprises a shoe body 1 and a sole 2 arranged at the lower part of the shoe body 1 , wherein a plurality of groups of evenly arranged telescopic spikes 3 are arranged at the bottom of the sole 2 .

[0040] The telescopic shoe spike 3 includes a housing 31, a tension spring 32, a stopper 33, a permanent magnet column 34 and a sealing ring 35;

[0041] The shell 31 is hollow inside and has an opening at the bottom, and is fixed to the sole 2. A limiting protrusion 311 is arranged in the middle of the inner wall of the shell 31. The permanent magnet column 34 is made of NdFeB strong magnetic material, and there is a gap between the permanent magnet column 34 and the inner wall of the shell 31. A limiting piece 33 with a larger outer diameter is fixedly arranged on the upper end of the permanent magnet column 34. The permanent magnet column 34 moves up and down relatively in the shell 31 and is prevented from completely detaching from the shell 31 through the cooperation of the limiting piece 33 and the limiting protrusion 311; a sealing ring 35 is arranged on the outer wall of the permanent magnet column 34, and the sealing ring 35 is tightly abutted against the inner wall of the shell 31; a tension spring 32 is connected between the limiting piece 33 and the inner top wall of the shell 31.

[0042] The sealing ring 35 prevents external water and dust from entering the housing 31 .

[0043] When walking on flat ground, the permanent magnet column 34 is retracted into the housing 31 by the tension of the tension spring 32, so as to avoid damage caused by friction between the permanent magnet column 34 and the ground.

[0044] When walking on the steel grating, the permanent magnet column 34 generates magnetic attraction with the steel grating and overcomes the elastic force of the tension spring 32, so that the permanent magnet column 34 moves downward and extends below the housing 31, so that the permanent magnet column 34 is stuck in the gap of the steel grating to prevent the sole 2 from slipping. It prevents slipping when walking on the steel grating when the friction force is insufficient in rainy and snowy weather.

[0045] Since the blank area of ​​the steel grating is much larger than the area of ​​the steel structure, most of the telescopic shoe spikes 3 can be inserted into the blank area, and a small part is blocked by the steel structure.

[0046] Embodiment 2 includes all the contents of Embodiment 1, except that Figure 3-5 As shown;

[0047] The sole 2 includes a deformable upper sole layer 21 and a lower sole layer 22, the left and right ends of the upper sole layer 21 and the lower sole layer 22 are connected together, and multiple groups of evenly arranged reset elastic members 23 are connected between the bottom wall of the upper sole layer 21 and the top wall of the lower sole layer 22, and the reset elastic members 23 can be compression springs.

[0048] The housing 31 of the telescopic shoe spike 3 is relatively fixed to the lower layer 22 of the sole, and the permanent magnetic column 34 includes an upper column 341 and a lower column 342. The upper column 341 has magnetic force, and the lower column 342 has no magnetic force; the lower end of the upper column 341 and the upper end of the lower column 342 are universally rotatably matched within the range of -20° to +20°, the limiter 33 is fixed to the upper end of the upper column 341, and the sealing ring 35 is arranged on the outer wall of the upper column 341.

[0049] The fixed end of the elastic telescopic limit rod 24 is fixed to the bottom wall of the upper layer 21 of the sole, and the telescopic end of the elastic telescopic limit rod 24 and the upper column 341 are linearly moved relative to each other. Normally, the elastic force of the tension spring 32 is greater than the elastic force of the elastic telescopic limit rod 24, and the elastic telescopic limit rod 24 and the telescopic shoe spike 3 are matched one by one.

[0050] The upper end of the lower column 342 is a spherical structure for universal connection with the lower end of the upper column 341. A limiting groove is provided on the spherical surface of the upper end of the lower column 342. The outer diameter of the telescopic end of the elastic telescopic limiting rod 24 is slightly smaller than the limiting groove.

[0051] When walking on the steel grating plate, the upper column 341 of the permanent magnet column 34 generates magnetic attraction with the steel grating and overcomes the elastic force of the tension spring 32 to move downward and extend to the bottom of the shell 31, so that the lower part of the upper column 341 and the lower column 342 move to the outside of the shell 31; the lower part of the upper column 341 and the lower column 342 are stuck in the gap of the steel grating to prevent the sole 2 from slipping. At the same time, the elastic telescopic limit rod 24 tends to stretch under its own elastic force and just stretches to the limit position. At this time, the telescopic end of the elastic telescopic limit rod 24 is just inserted into the limit groove on the spherical surface of the upper end of the lower column 342, preventing the lower column 342 from moving relative to the upper column 341.

[0052] When the user lifts his foot, the pressure between the bottom wall of the upper sole layer 21 and the lower sole layer 22 is lost, and they move away from each other and recover under the push of the elastic force of the reset elastic member 23. The distance between the bottom wall of the upper sole layer 21 and the lower sole layer 22 becomes larger, driving the elastic telescopic limit rod 24 at the longest length to move upward a short distance, so that the telescopic end of the elastic telescopic limit rod 24 is separated from the limiting groove of the lower column 342, so that the lower column 342 can be rotated in any universal direction relative to the upper column 341.

[0053] Since the user moves forward / backward, the process of the telescopic spikes 3 being pulled out of the gap of the steel grating plate is to move obliquely upward. During this process, the lower part of the telescopic spikes 3 (lower column 342) is in contact with the steel structure of the steel grating plate. At this time, the lower column 342 can be rotated to a certain angle to adapt, thereby improving the comfort of use.

[0054] Under the normal condition of gravity, the lower column 342 rotates relative to the upper column 341 , so that the positioning groove of the lower column 342 is just aligned with the telescopic end of the elastic telescopic limiting rod 24 .

[0055] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An anti-skid shoe for walking on a steel grating, comprising a shoe body (1) and a sole (2), wherein the lower part of the shoe body (1) is provided with the sole (2), and the bottom of the sole (2) is provided with one or more sets of telescopic spikes (3), characterized in that: The telescopic shoe spike (3) comprises an outer shell (31) and a permanent magnetic column (34) movably fitted inside the outer shell (31); a tension spring (32) is connected between the inner top wall of the outer shell (31) and the permanent magnetic column (34); the elastic force of the tension spring (32) pushes the permanent magnetic column (34) to extend into the inner shell (31); the permanent magnetic column (34) and the steel grille are magnetically fitted to extend to the outside of the outer shell (31) to clamp the gap of the steel grille.

2. The anti-skid shoes for walking on steel grating according to claim 1, characterized in that: The sole (2) comprises an upper sole layer (21) and a lower sole layer (22), and a plurality of groups of uniformly arranged resetting elastic members (23) are provided between the upper sole layer (21) and the lower sole layer (22).

3. The anti-skid shoes for walking on steel grating according to claim 2, characterized in that: The telescopic shoe spikes (3) are arranged on the lower layer (22) of the sole.

4. The anti-skid shoes for walking on steel gratings according to claim 3, characterized in that: The permanent magnetic column (34) comprises an upper column (341) and a lower column (342), and the lower end of the upper column (341) is universally connected and matched with the upper end of the upper column (342).

5. The anti-skid shoes for walking on steel gratings according to claim 4, characterized in that: An elastic telescopic limiting rod (24) is movably connected to the upper column (341), the telescopic end of the elastic telescopic limiting rod (24) is in abutment with the outer surface of the upper end of the lower column (342), and the fixed end of the elastic telescopic limiting rod (24) is fixed to the upper layer (21) of the sole.

6. The anti-skid shoe for walking on steel grating according to claim 5, characterized in that: The upper end surface of the lower column (342) is provided with a limiting groove, and the telescopic end of the elastic telescopic limiting rod (24) is adapted to the limiting groove.

7. The anti-skid shoes for walking on steel gratings according to claim 5, characterized in that: The elastic force of the tension spring (32) is greater than the elastic force of the elastic telescopic limiting rod (24) tending to extend.

8. The anti-skid shoes for walking on steel gratings according to claim 1, characterized in that: A limiting piece (33) is provided at the end of the permanent magnetic column (34), and a limiting protrusion (311) is provided on the inner side wall of the shell (31), and the limiting piece (33) and the limiting protrusion (311) cooperate to limit the permanent magnetic column (34) from completely leaving the inside of the shell (31).

9. The anti-skid shoes for walking on steel gratings according to claim 1, characterized in that: A sealing ring (35) is provided between the outer wall of the permanent magnet column (34) and the inner wall of the housing (31).

10. The anti-skid shoes for walking on steel gratings according to claim 1, characterized in that: The permanent magnetic column (34) is made of neodymium iron boron strong magnetic material.

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