CN106764379B

CN106764379B - Anti-rolling safety pad

Info

Publication number: CN106764379B
Application number: CN201710075938.3A
Authority: CN
Inventors: 周聪群; 徐理邦
Original assignee: Qingdao Lcs Tech Co ltd
Current assignee: Qingdao Lcs Tech Co ltd
Priority date: 2017-02-13
Filing date: 2017-02-13
Publication date: 2023-08-08
Anticipated expiration: 2037-02-13
Also published as: CN106764379A

Abstract

In order to solve the problem that the existing anti-rolling safety pad cannot bear large pressure and cannot resist heavy load impact or rolling of a vehicle, the invention provides an anti-rolling safety pad, which comprises an upper layer, a buffer layer and a lower layer which are sequentially arranged, wherein the upper layer is used for directly bearing impact force or rolling force, and the anti-rolling safety pad is characterized in that the buffer layer comprises a sensing element and a spacing part which are arranged at intervals along a first direction, the spacing part is used for bearing the impact force or rolling force when the anti-rolling safety pad is impacted by the heavy load or rolled by the vehicle, the sensing element and the spacing part extend along a second direction, and an included angle between the first direction and the second direction is more than 0 degree and less than or equal to 90 degrees; the included angle between the third direction and the first direction and the second direction is more than 0 degrees and less than or equal to 90 degrees. The safety pad provided by the invention has sensitive safety protection, can bear large rolling force of lifting equipment such as a forklift or impact force of unexpected heavy objects, namely, can protect personal safety, cannot be damaged by heavy appliances such as machine equipment and the like, greatly expands the application range and reduces the maintenance cost.

Description

Anti-rolling safety pad

Technical Field

The invention relates to the technical field of safety protection, in particular to an anti-rolling and anti-impact safety cushion.

Background

The safety pad is a product which is widely applied to the application fields of automatic stamping and welding production lines, medical ray equipment, anti-pinch doors of public buses or subways and the like, can hurt personnel and is used for protecting the personal safety of the personnel in the environment. However, the existing safety pad products cannot bear rolling or heavy impact of vehicles, and the use environment is very harsh. In addition, the safety pad produced at home and abroad at present is mostly manufactured by adopting a micro pull switch or a micro switch sensor mode, and the sensing element of the safety pad is formed by a micro switch or a sensor assembled by a plastic element and a conductive metal element. Because structural style and components and parts material itself can not bear impact and roll, so the safety pad product on the market at present can not bear too much pressure nor allow fork truck or hoisting equipment to roll, and fork truck or heavy hoisting equipment can not be used when the equipment is installed or maintained in the area where the safety pad is installed. This area is also not able to withstand the impact caused by accidental part or tool removal. Both of these conditions can lead to damage to the safety pad.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to solve the problem that the existing safety cushion cannot bear rolling and heavy impact of a forklift or equipment.

In order to solve the technical problems, the invention provides an anti-rolling safety pad, which comprises an upper layer, a buffer layer and a lower layer, wherein the upper layer, the buffer layer and the lower layer are sequentially arranged along a third direction, and the upper layer is used for directly bearing impact force or rolling force; the included angle between the third direction and the first direction and the second direction is more than 0 degrees and less than or equal to 90 degrees.

Further, the sensing element is an elastic micro-stroke flexible sensor.

Further, a compression deformation-resistant buffer cushion is additionally arranged in the interval part.

Further, the elastic micro-travel flexible sensor comprises a substrate, at least a cavity is arranged on the upper portion of the substrate of the elastic micro-travel flexible sensor, and electric conductors are respectively arranged on the upper surface and the lower surface in the cavity.

Further, the cross sections of the conductors along the first direction and the third direction are triangular, and inclined planes of the conductors arranged on the upper surface and the lower surface in the cavity correspond to each other.

Further, a plurality of cavities are arranged at the lower part of the base body of the elastic micro-stroke flexible sensor to form a deformation buffer part.

Further, the base body of the elastic micro-stroke flexible sensor is made of piezoelectric elastic materials.

Further, the deformation cushion comprises a matrix made of a polymeric elastic material and a plurality of rigid support backbones embedded in the matrix of the deformation cushion extending in a second direction.

Further, each rigid support framework comprises a first rigid support framework and a second rigid support framework which extend along the second direction and are separated by a set distance along the third direction.

Further, the cross sections of the first rigid support framework and the second rigid support framework along the first direction and the third direction are respectively T-shaped and inverted T-shaped.

Compared with the safety cushion widely applied at present, the safety cushion provided by the invention has sensitive safety protection, can bear large rolling force of lifting equipment such as a forklift or impact force of unexpected heavy objects, namely, can protect personal safety, can not be damaged by heavy appliances such as machine equipment and the like, greatly expands the application range and reduces the maintenance cost.

Drawings

FIG. 1 is a schematic cross-sectional view of an anti-crush safety pad provided in accordance with the present invention in a first direction and a third direction in an unstressed state (i.e., an initial state);

FIG. 2 is a schematic cross-sectional view of an anti-crush safety pad according to the present invention, taken along a first direction and a third direction, in a state where the pad is under heavy pressure;

FIG. 3 shows a schematic cross-sectional view of a flexible sensor provided by the present invention along a first direction and a third direction;

FIG. 4 is a schematic cross-sectional view of the cushion of the present invention in a first direction and a third direction when not under compression;

FIG. 5 illustrates the deformation of the cushion pad provided by the present invention under stress when subjected to high pressure;

figure 6 shows the deformation and force transmission of the sensor and cushion provided by the present invention under high crush and high pressure.

Detailed Description

The detailed description of the present invention will be readily apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings, wherein it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

FIG. 1 is a schematic cross-sectional view of an anti-crush safety pad provided in accordance with the present invention in a first direction and a third direction in an unstressed state (i.e., an initial state); fig. 2 shows a schematic cross-sectional view of the anti-rolling safety pad according to the present invention in a first direction and a third direction in a state when the anti-rolling safety pad is pressed under a heavy load. As shown in fig. 1-2, the rolling-resistant safety pad provided by the invention comprises an upper layer 1, a buffer layer and a lower layer 2 which are sequentially arranged along a third direction, wherein the upper layer 1 is used for directly bearing pressure, the pressure comprises impact force and/or rolling force, the application direction of the pressure F is shown by an arrow in fig. 1, and although the direction shown in fig. 1 is basically vertical to the upper layer 1, namely along the third direction, it should be clear to a person skilled in the art that the application direction of the pressure F is not necessarily vertical to the upper layer 1, and can be other directions which are at a certain angle with the upper layer 1.

As also shown in fig. 1, the cushioning layer includes sensing elements and spacers arranged at intervals from each other in a first direction, the spacers being for receiving an impact or crush force when the crush resistant safety pad is impacted or crushed by a weight (e.g., a vehicle or other object, a human body) M. The sensor element and the spacer extend along a second direction, an included angle between the first direction and the second direction is larger than 0 degree and smaller than or equal to 90 degrees, an included angle between the third direction and the first direction and the second direction is larger than 0 degree and smaller than or equal to 90 degrees, and in the invention, the first direction is preferably the left-right direction in fig. 1 and 2; the third direction is the up-down direction in fig. 1 and 2, and the second direction is a direction perpendicular to the first and second directions. In the invention, straight lines along the first direction and the second direction are crossed to form a first plane, and straight lines along the first direction and the third direction are crossed to form a second plane; the straight lines along the second direction and the third direction intersect to form a third plane, in the present invention, the first plane is a plane parallel to the horizontal plane in fig. 1 and 2, the second plane is a plane perpendicular to the horizontal plane, and the third plane is a plane perpendicular to the first plane and the second plane.

In the present invention, the sensing element is preferably an elastic micro-stroke flexible sensor 3, and the elastic micro-stroke flexible sensor 3 generates pressure deformation only in a predetermined limited pressure deformation stroke (such as the elastic micro-stroke flexible sensor 3' in a deformed state in fig. 2) and generates and outputs a sensing signal corresponding to the deformation, and after the pressure deformation is eliminated, the elastic performance is recovered and the upper surface layer 1 of the anti-rolling safety pad is recovered to an initial state.

The anti-rolling safety pad is characterized in that the anti-rolling deformation buffer pad 4 is additionally arranged in the interval part, the anti-rolling buffer pad 4 ensures the sensing signal output of the sensing element under the condition that the anti-rolling safety pad is pressed, and ensures that the sensing element is not damaged when the safety pad bears larger pressure, and the safety pad is restored to an initial state without deformation under the condition that the anti-rolling safety pad is not pressed.

Fig. 3 shows a schematic cross-sectional view of the flexible sensor provided by the present invention along a first direction and a third direction, and as shown in fig. 3, the elastic micro-stroke flexible sensor 3 includes a substrate 26 made of an elastic piezoelectric material, where the substrate 26 includes a first substrate a disposed at an upper portion along the first direction and extending along the second direction, and having an elliptical cross-section along the first direction and the third direction, and a second substrate B disposed at a lower portion along the first direction and extending along the second direction and having a rectangular cross-section along the first direction and the third direction. A closed cavity 10 with elliptical cross sections along the first direction and the third direction and extending along the second direction is arranged in the first substrate A, an electric conductor 12 and an electric conductor 11 which are made of elastic conductive materials are respectively arranged on the upper inner surface and the lower inner surface in the cavity 10, the electric conductor 12 and the electric conductor 11 are respectively connected with electric wires for providing signals to the outside, the electric conductor 12 extends along the second direction, and the cross sections along the first direction and the third direction are triangular, namely, the thickness is sequentially reduced from right to left; the conductor 11 extends along the second direction, and its cross-section along first direction and third direction is triangle-shaped, promptly from right to left, and thickness grow in proper order, so, no matter receive certain pressure from the direction along the third direction or with the third direction is certain angle the direction, conductor 12 contacts with conductor 11 to the electrical property links to each other, further controls rolls or the power supply circuit of the equipment of the anti safety pad that rolls of impact control, has improved the security. The second substrate is provided with a plurality of cavities extending along the second direction, preferably two cavities, such as the cavity 25, the cross sections of the two cavities along the first direction and the third direction are quarter circles, the two cavities are symmetrically arranged below the cavities with elliptical cross sections along the first direction and the third direction, and the arc surfaces of the two cavities are close. Although the present invention has been described with reference to a substrate 26 having a cavity in the upper portion and two cavities in the lower portion, it should be apparent to those skilled in the art that the number of cavities can be adjusted and varied as desired.

The elastic micro-stroke flexible sensor 3 provided by the invention is characterized in that the base body is made of piezoelectric elastic material, the upper part of the base body along the third direction is provided with the ellipsoidal cavity 10, the lower part is provided with two cavities, and the two cavities are symmetrically arranged under the ellipsoidal cavity, so that the sensor can work normally under allowable pressure, and the initial state can be quickly restored under the condition of removing external force.

Fig. 4 shows a schematic cross-sectional view of the cushion pad according to the present invention in a first direction and a third direction when not pressed, and as shown in fig. 4, the cushion pad according to the present invention includes a base 21 made of a high molecular elastic material extending in a second direction and a plurality of rigid supporting frames embedded in the base of the deformed cushion pad and extending in the second direction. The substrate 21 is provided with a plurality of rectangular cavities 24 with rectangular cross sections along the first direction and the third direction and a plurality of rectangular cavities 23 with square cross sections along the first direction and the third direction in a staggered manner along the first direction, and the rectangular cavities 24 with rectangular cross sections along the first direction and the third direction and the four side walls of the rectangular cavities 23 with square cross sections along the first direction and the third direction are in natural arc surface transition; each rigid support framework comprises a first rigid support framework 22A and a second rigid support framework 22B which extend along a second direction and are spaced by a set distance along a third direction, the cross sections of the first rigid support framework 22A and the second rigid support framework 22B along the second direction are respectively T-shaped and inverted T-shaped, and the T-shaped support frameworks 22A and the inverted T-shaped support frameworks 22B are arranged on two sides of a cavity 24 with a rectangular cross section along the first direction and the third direction along the third direction.

Fig. 5 shows the situation of deformation under stress of the cushion pad provided by the present invention under a large pressure, and as shown in fig. 5, when the cushion layer is under pressure, the elastic matrix is deformed under pressure, and the rectangular cavity 24 with rectangular cross section along the first direction and the third direction and the rectangular cavity 23 with square cross section along the first direction and the third direction are deformed, so that the T-shaped support frame 22A and the T-shaped support frame 22B are in contact with each other along the third direction, thereby increasing the rolling resistance or the weight impact force. When the pressure is removed, the elastic matrix is restored due to the elasticity of the elastic matrix.

Fig. 6 shows the deformation and force transmission conditions of the sensor and the buffer pad provided by the invention under the conditions of large rolling and large pressure, and when the external pressure is larger than the working pressure or the impact force is born, as shown in fig. 6, the pressing stroke of the upper layer of the anti-rolling safety pad is larger than the working stroke of the sensor, the deformation buffer part B of the sensor 3 is deformed, and the anti-compression deformation buffer pad 4 becomes a carrier for bearing the pressure and the impact force. The pressure or impact force of the excess is transmitted to the ground through the compression deformation resistant cushion 4. When the pressure or impact force is removed, the elastic micro-stroke flexible sensor 3 restores the upper layer to the original state due to its own elasticity.

The key point of the invention is that the combination of the elasticity of the flexible sensor, the elasticity of the buffer cushion and the bearing force of the rigid supporting framework in the buffer cushion is utilized, thus realizing the safety protection function under the specified pressure, and providing effective protection for the safety cushion under the condition of rolling or impact force exceeding the rated pressure, and preventing the safety cushion from failure or damage caused by overweight rolling or impact.

Since the anti-rolling safety pad provided by the invention has the buffer layer, the buffer layer comprises the sensing elements and the spacing parts which are arranged at intervals along the first direction, and the spacing parts are used for bearing impact force or rolling force when the anti-rolling safety pad is impacted or rolled by a heavy object (such as a vehicle or other objects and human bodies), the anti-rolling safety pad can bear rolling and heavy object impact of a forklift or equipment.

The buffer layer of the anti-rolling safety pad provided by the invention is provided with the sensing elements and the spacing parts which are staggered along the first direction, and the spacing parts are used for bearing impact force or rolling force when the anti-rolling safety pad is impacted by a heavy object or rolled by a vehicle, so that the anti-rolling safety pad provided by the invention has the characteristics of sensitive protection safety and forklift rolling or heavy object impact resistance.

The sensing non-piece of the rolling-resistant safety pad provided by the invention adopts the elastic micro-stroke flexible sensor, and comprises a matrix made of piezoelectric elastic materials, wherein the upper part of the matrix is provided with a cavity, and the upper surface and the lower surface in the cavity are respectively provided with a conductor, so that the rolling-resistant safety pad provided by the invention has the function of detecting pressure.

The sensing element of the anti-rolling safety pad provided by the invention has the deformation buffer part, so that the rapid recovery function of the flexible sensor after the force is lost is improved.

Because the anti-rolling safety cushion is additionally provided with the anti-compression deformation buffer cushion in the spacing part of the buffer layer, the buffer cushion bears impact force or rolling force when being impacted by heavy objects or rolled by a forklift, so that the elastic micro-travel flexible sensor can only generate pressure deformation in a limited pressure deformation travel, and signal transmission is realized; when the impact force or rolling force is eliminated, the surface layer of the anti-rolling safety pad is quickly restored to the initial state, so that the anti-rolling safety pad has the functions of resisting heavy impact and rolling vehicles, and the service range and the service life of the anti-rolling safety pad are greatly improved.

The deformation buffer cushion of the anti-rolling safety cushion provided by the invention comprises a matrix made of high polymer elastic materials and a plurality of rigid supporting frameworks embedded in the matrix, so that when the anti-rolling safety cushion bears working pressure or impact force exceeding that borne by an elastic micro-travel flexible sensor, the plurality of rigid supporting frameworks bear the pressure or impact force exceeding that of the elastic micro-travel flexible sensor and transmit the pressure or impact force to the lower surface layer to be further transmitted to the supporting body, thereby protecting the flexible sensing element. The anti-rolling safety pad provided by the invention is not influenced by the use conditions and the environment, so that the use range and the service life of the anti-rolling safety pad are greatly improved.

Compared with the safety cushion products widely applied at present, the safety cushion provided by the invention has sensitive safety protection, can bear large rolling force of lifting equipment such as a forklift or impact force of unexpected heavy objects, namely, can protect personal safety, can not be damaged by heavy appliances such as machine equipment and the like, greatly expands the application range and reduces the maintenance cost.

While the embodiments of the present invention have been described in detail, it should be apparent to those skilled in the art that many modifications and variations can be made without departing from the spirit of the invention, and the scope of the invention is also to be considered as limited to the foregoing.

Claims

1. An anti-rolling safety pad comprising an upper layer, a buffer layer and a lower layer which are sequentially arranged along a third direction, wherein the upper layer is used for directly bearing impact force or rolling force, and the anti-rolling safety pad is characterized in that the buffer layer comprises a sensing element and a spacing part which are arranged at intervals along a first direction, the spacing part is used for bearing the impact force or rolling force when the anti-rolling safety pad is impacted by a heavy object or rolled by a vehicle, the sensing element and the spacing part extend along a second direction, and an included angle between the first direction and the second direction is more than 0 degree and less than or equal to 90 degrees; the included angle between the third direction and the first direction and the second direction is more than 0 degrees and less than or equal to 90 degrees.

2. The anti-crush safety pad of claim 1, wherein the sensing element is an elastic micro-travel flexible sensor.

3. The crush resistant safety pad of claim 2, wherein a crush resistant cushion is incorporated into the spacer.

4. The anti-rolling safety mat according to claim 3, wherein the elastic micro-stroke flexible sensor comprises a base body, at least a cavity is arranged on the upper part of the base body of the elastic micro-stroke flexible sensor, and electric conductors are respectively arranged on the upper surface and the lower surface of the cavity.

5. The anti-rolling safety mat according to claim 4, wherein the cross section of the conductor in the first direction and the third direction is triangular, and inclined surfaces of the conductor disposed on the upper and lower surfaces in the cavity correspond to each other.

6. The anti-crush safety pad of claim 5, wherein a plurality of cavities are provided in a lower portion of the base of the elastic micro-stroke flexible sensor to form deformation buffers.

7. The anti-crush safety pad of claim 6, wherein the base of the resilient micro-stroke flexible sensor is made of a piezoelectric elastomer material.

8. The crush resistant safety pad according to any one of claims 3 to 7, wherein the deformation cushion comprises a matrix made of a polymeric elastic material and a plurality of rigid support backbones embedded in the matrix of the deformation cushion extending in the second direction.

9. The anti-crush safety pad of claim 8, wherein each rigid support frame comprises two first and second rigid support frames extending in the second direction and spaced apart a set distance in the third direction.

10. The anti-crush safety pad of claim 9, wherein the first rigid support frame and the second rigid support frame are T-shaped and inverted T-shaped in cross-section along the first direction and the third direction, respectively.