阅读说明：本技术 一种用于机动车维修的安全缓冲装置 (Safety buffer device for motor vehicle maintenance ) 是由 施程龙 卞冬香 于 2021-09-28 设计创作，主要内容包括：本发明属于机动车维修减震保护领域,尤其是涉及一种用于机动车维修的安全缓冲装置,包括上端敞口设置的框体,框体内转动连接有两根处于同一水平高度的固定轴,两根固定轴上端设有与其平行设置的活动轴,活动轴与框体内侧壁活动连接,框体内侧壁开设有与活动轴匹配设置的竖条形的滑动槽,每根固定轴和活动轴上均固定套设有输送辊,多根固定轴和活动轴外共同套设有网状的弹性输送带,多根活动轴和固定轴上均转动连接有多个连接块。本发明通过设置弹性波纹管,在活动板上下移动的过程中,弹性波纹管会被反复挤压,会将其中的气体通过固定盒上的多个单向出气孔喷出,喷出的气体能对放在弹性输送带上的零件进行初步除尘,达到清洁的效果。(The invention belongs to the field of motor vehicle maintenance shock absorption protection, and particularly relates to a safety buffer device for motor vehicle maintenance, which comprises a frame body, wherein the upper end of the frame body is open, two fixed shafts at the same horizontal height are rotatably connected in the frame body, movable shafts which are arranged in parallel to the fixed shafts are arranged at the upper ends of the two fixed shafts, the movable shafts are movably connected with the inner side wall of the frame body, a vertical strip-shaped sliding groove matched with the movable shafts is formed in the inner side wall of the frame body, conveying rollers are fixedly sleeved on each fixed shaft and each movable shaft, a reticular elastic conveying belt is sleeved outside the fixed shafts and the movable shafts together, and a plurality of connecting blocks are rotatably connected on the movable shafts and the fixed shafts. According to the invention, the elastic corrugated pipe is arranged, so that in the process of moving the movable plate up and down, the elastic corrugated pipe can be repeatedly extruded, gas in the elastic corrugated pipe can be sprayed out through the plurality of one-way air outlet holes in the fixed box, and the sprayed gas can preliminarily remove dust on parts placed on the elastic conveying belt, so that the cleaning effect is achieved.)

1. The utility model provides a safe buffer for motor vehicle maintenance, includes frame (1) of the open setting in upper end, its characterized in that: two fixed shafts (2) at the same horizontal height are rotatably connected in the frame body (1), movable shafts (3) which are arranged in parallel with the fixed shafts (2) are arranged at the upper ends of the two fixed shafts, the movable shaft (3) is movably connected with the inner side wall of the frame body (1), the inner side wall of the frame body (1) is provided with a vertical bar-shaped sliding groove (4) which is matched with the movable shaft (3), each fixed shaft (2) and the movable shaft (3) are fixedly sleeved with conveying rollers (5), a plurality of fixed shafts (2) and the movable shaft (3) are sleeved with a netted elastic conveying belt (6) together, a plurality of movable shafts (3) and the fixed shafts (2) are connected with a plurality of connecting blocks (7) in a rotating mode, an elastic buffer layer (8) which is horizontally arranged is arranged between the two movable shafts (3), the elastic buffer layer (8) is connected with the movable shaft (3) through a connecting block (7); still include dust removal mechanism, dust removal mechanism is every including seting up a plurality of bleeder vents (15) of evenly arranging on elastic buffer layer (8) equal fixedly connected with many elastic bellows (16), two between fly leaf (10) and fixed plate (11) be equipped with fixed box (17) that the level set up between fixed axle (2), fixed box (17) are connected with fixed axle (2) through connecting block (7), fixed box (17) all communicate through the pipe with a plurality of elastic bellows (16), a plurality of one-way ventholes of evenly arranging are seted up to lateral wall on fixed box (17).

2. A safety buffer device for vehicle service as claimed in claim 1, wherein: a plurality of universal wheels (9) are fixedly mounted on the lower side wall of the frame body (1).

3. A safety buffer device for vehicle maintenance as claimed in claim 2, wherein: still include buffer gear, buffer gear includes and is connected and is located fly leaf (10) of fly axle (3) lower extreme, every through connecting block (7) and fly axle (3) fixed axle (2) upper end all is equipped with fixed plate (11) that set up with framework (1) inside wall fixed connection and equal level.

4. A safety buffer device for vehicle service as claimed in claim 3, wherein: every buffer board (12) of the vertical setting of the equal fixedly connected with of lateral wall under fly leaf (10), every buffer box (13) that the equal fixedly connected with of lateral wall went up the open setting of port on fixed plate (11), buffer board (12) extend to buffer box (13) inside set up and with buffer box (13) in be connected with many springs (14) between the bottom surface.

5. The safety buffer device for repairing motor vehicles as claimed in claim 4, wherein: each elastic corrugated pipe (16) is provided with a one-way air inlet.

6. The safety buffer device for repairing motor vehicles as claimed in claim 5, wherein: still include actuating mechanism, actuating mechanism is including rotating transmission dish (18) of connection on framework (1) lateral wall, the pivot of transmission dish (18) is connected with gear (20), every through one-way bearing the one end of fixed axle (2) all extends to framework (1) outside setting and driven plate (21) of the coaxial setting of fixedly connected with, every it is equipped with drive belt (22) all to overlap jointly between driven plate (21) and transmission dish (18).

7. The safety buffer device for repairing motor vehicles as claimed in claim 6, wherein: elastic buffer layer (8) side fixedly connected with connecting band (23), the other end of connecting band (23) extends to rack (24) of the vertical setting of framework (1) outside setting and fixedly connected with, rack (24) and framework (1) lateral wall sliding connection, rack (24) are connected with gear (20) meshing.

8. A safety buffer device for vehicle service as claimed in claim 7, wherein: the side wall of the port on the frame body (1) is provided with a plurality of rotating wheels (25) which are matched with the connecting belt (23) one by one, and one end of the connecting belt (23) spans across the rotating wheels (25) and extends to the outside of the frame body (1).

9. A safety buffer device for vehicle maintenance as claimed in claim 8, wherein: also comprises a stabilizing mechanism which comprises a transverse plate (26) arranged between the movable plate (10) and the inner side wall of the frame body (1), one side of the transverse plate (26) is fixedly connected with the movable plate (10) through a connecting rod, the other side of the transverse plate (26) is connected with the inner side wall of the frame body (1) in a sliding way, the lower side wall of the transverse plate (26) is fixedly connected with a vertical rod (27), the lower end of the vertical rod (27) is fixedly connected with a piston plate (28), a stabilizing cylinder (29) which is vertically arranged is arranged in the frame body (1), the lower end of the stabilizing cylinder (29) extends to the outside of the frame body (1) and is fixedly connected with a stabilizing column (30), the vertical rod (27) extends into the stabilizing cylinder (29), the space at the lower end of the piston plate (28) is communicated with the elastic corrugated pipe (16) through a one-way conduit, and a return spring is fixedly connected between the piston plate (28) and the inner bottom surface of the stabilizing cylinder (29).

Technical Field

The invention belongs to the field of motor vehicle maintenance and shock absorption protection, and particularly relates to a safety buffer device for motor vehicle maintenance.

Background

In the maintenance process of the motor vehicle, various maintenance tools and large-scale equipment matched with the various maintenance tools are often needed, and the cantilever crane is a common device and is often used for conveying relatively large-scale parts of motor vehicle navigation.

In the process of transferring parts by a cantilever crane, most of the traditional modes are that parts are directly placed on a protective cushion made of rubber or other buffer materials, however, the protective cushion has a simple structure and a limited buffer effect on the parts, and the parts are easily damaged in the process of placing the parts on the protective cushion, in addition, when the parts are parts with large volume and weight such as an engine, a gearbox and the like, and the bottom of the parts is provided with a tip or a bulge, the parts are directly contacted with the protective cushion, so that the protective cushion is easily scratched, in the placing process, the contact surface of the parts and the protective cushion at the first time is not an upright surface capable of stably placing the parts, therefore, the parts need to be placed flat or find another stable placing surface by matching with a cantilever, at the moment, a maintenance worker needs to operate the cantilever to slowly translate while controlling the unreeling of a hoisting cable, and simultaneously holds the parts by hands, the placing posture of the part is constantly adjusted, so that the part is prevented from being damaged due to large rolling when the part is contacted and lowered with the protective pad;

in the prior art, a maintenance trolley is adopted for assisting in placing and maintaining parts, but in the process of placing the parts with large volume and irregular bottom surface, an inclined process is generated after the parts are placed in contact with the trolley, the universal wheels of the maintenance trolley need to be locked in advance, otherwise the trolley is very easy to drive to be released and shifted in the process of inclining the parts, so that the risk that the parts roll off from the trolley is increased, in addition, after the parts are taken down from a motor vehicle, more dust can be generally attached to the surfaces of the parts, and the dust can cause inconvenience to later maintenance procedures.

Disclosure of Invention

The invention aims to provide a safety buffer device for motor vehicle maintenance, which can greatly improve the buffer effect to effectively protect parts, aiming at the problem that most of traditional protective pads with the buffer effect have limited buffer effect.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a safe buffer for motor vehicle maintenance, includes the uncovered framework that sets up in upper end, the framework internal rotation is connected with two fixed axles that are in same level, two fixed axle upper end is equipped with the loose axle rather than parallel arrangement, loose axle and framework inside wall swing joint, the sliding tray of the perpendicular bar that sets up is matchd with the loose axle is seted up to the framework inside wall, every all fixed cover is equipped with the conveying roller on fixed axle and the loose axle, many the outer common cover of fixed axle and loose axle is equipped with netted elastic conveyor belt, many all rotate on loose axle and the fixed axle and be connected with a plurality of connecting blocks, two be equipped with the elastic buffer layer that the level set up between the loose axle, elastic buffer layer passes through connecting block and loose axle connection.

In the safety buffer device for repairing the motor vehicle, a plurality of universal wheels are fixedly mounted on the lower side wall of the frame body.

Among foretell a safe buffer for motor vehicle maintenance, still include buffer gear, buffer gear includes through connecting block and loose axle connection and be located the fly leaf of loose axle lower extreme, every the fixed axle upper end all is equipped with the fixed plate that sets up with framework inside wall fixed connection and equal level.

In foretell a safe buffer for motor vehicle maintenance, every under the fly leaf the buffer board of the vertical setting of the equal fixedly connected with of lateral wall, every the buffer box that the equal fixedly connected with of lateral wall opened the setting of port on the fixed plate, the buffer board extend to the inside setting of buffer box and be connected with many springs between the bottom surface in the buffer box.

In foretell a safety buffer for motor vehicle maintenance, still include dust removal mechanism, dust removal mechanism is every including seting up a plurality of bleeder vents of evenly arranging on the elastic buffer layer equal many elastic bellows of fixedly connected with between fly leaf and the fixed plate, two be equipped with the fixed box that the level set up between the fixed axle, fixed box passes through the connecting block and is connected with the fixed axle, fixed box all communicates through the pipe with a plurality of elastic bellows, fixed box side wall sets up a plurality of one-way ventholes of evenly arranging.

In the safety buffer device for motor vehicle maintenance, each elastic corrugated pipe is provided with a one-way air inlet.

Among foretell a safe buffer for motor vehicle maintenance, still include actuating mechanism, actuating mechanism is including rotating the transmission disc of connection on the framework lateral wall, the pivot of transmission disc is connected with the gear through one-way bearing, every the one end of fixed axle all extends to the driven plate that the framework outside set up and the coaxial setting of fixedly connected with, every all overlap jointly between driven plate and the transmission disc and be equipped with the drive belt.

In foretell a safety buffer for motor vehicle maintenance, elastic buffer layer side fixedly connected with connecting band, the other end of connecting band extends to the rack that the framework outside set up and fixedly connected with was vertical to be set up, rack and framework lateral wall sliding connection, the rack is connected with gear engagement.

In the safety buffer device for repairing the motor vehicle, the side wall of the upper port of the frame body is provided with a plurality of rotating wheels which are matched with the connecting belt one by one, and one end of the connecting belt spans across the rotating wheels and extends to the outside of the frame body.

In foretell a safety buffer for motor vehicle maintenance, still include stabilizing mean, stabilizing mean is including setting up the diaphragm between fly leaf and framework inside wall, connecting rod and fly leaf fixed connection are passed through to one side of diaphragm, the opposite side and the framework inside wall sliding connection of diaphragm, lateral wall fixedly connected with montant under the diaphragm, the lower extreme fixedly connected with piston plate of montant, be equipped with the section of thick bamboo of stabilizing of vertical setting in the framework, it sets up and fixedly connected with stabilization post to stabilize a section of thick bamboo lower extreme and extend to the framework outside, the montant extends to the inside setting of stabilizing a section of thick bamboo, the space of piston plate lower extreme passes through one-way pipe and elasticity bellows intercommunication, fixedly connected with reset spring between the bottom surface in piston plate and the section of thick bamboo of stabilizing.

Compared with the prior art, the safety buffer device for motor vehicle maintenance has the advantages that:

1. according to the invention, by arranging the elastic conveying belt, when parts fall into the frame body in the maintenance process of the motor vehicle, the elastic conveying belt has a larger buffering effect, and meanwhile, the elastic conveying belt can drive the two movable shafts to simultaneously move downwards under the action of the gravity of the parts, and the spring in the buffering box can also play a certain buffering effect in the process, so that the parts can be effectively protected;

the in-process that deformation took place for elastic conveyor, can remove certain distance around a plurality of conveying rollers under actuating mechanism's drive, when the part bottom was most advanced or protruding, the elastic conveyor who removes enabled the part to break away from and rotate certain angle before the cantilever crane to can be steady fall on the elastic conveyor and be difficult for taking place deformation, further protected spare part.

2. According to the invention, the elastic buffer layer is arranged between the two movable shafts, and can play a buffer role together with the elastic conveying belt on the upper layer, so that the buffer role is further improved;

and when the elastic buffer layer takes place deformation downwards, can drive rack rebound through the connecting band, make two fixed axles drive the conveying roller and rotate under the transmission effect to make the elastic conveyor belt on the conveying roller remove, expect the effect of killing two birds with one stone.

3. According to the invention, the elastic corrugated pipe is arranged, so that in the process of moving the movable plate up and down, the elastic corrugated pipe can be repeatedly extruded, gas in the elastic corrugated pipe can be sprayed out through the plurality of one-way air outlet holes in the fixed box, and the sprayed gas can preliminarily remove dust on parts placed on the elastic conveying belt, so that the cleaning effect is achieved.

4. According to the invention, by arranging the plurality of stabilizing columns, in the process of placing the parts on the elastic conveying belt, the gas in the elastic corrugated pipe can be extruded into the stabilizing cylinder through the one-way guide pipe, the stabilizing cylinder can drive the stabilizing columns to tightly abut against the ground under the action of air pressure, the whole device can be effectively prevented from shifting in the process of placing the parts, the process of buffering and placing large parts is safer and more efficient, and the process of placing small parts is still convenient and fast.

Drawings

FIG. 1 is a perspective view of an exterior structure of a safety bumper apparatus for vehicle repair according to the present invention;

FIG. 2 is a schematic front view of the internal structure of a safety buffer device for vehicle maintenance according to the present invention;

FIG. 3 is a schematic structural view of a stabilizing mechanism of a safety buffer device for repairing a motor vehicle according to the present invention;

FIG. 4 is a side view schematically illustrating the structure of each part of a safety buffer device for repairing a motor vehicle according to the present invention;

fig. 5 is a top view of a safety buffer device for vehicle maintenance according to the present invention.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

As shown in fig. 1-5, a safety buffer device for motor vehicle maintenance, includes a frame body 1 with an open upper end, it is worth mentioning that a plurality of universal wheels 9 are fixedly mounted on the side wall of the frame body 1, which is convenient for transferring parts, two fixed shafts 2 at the same level are connected in the frame body 1 in a rotating manner, movable shafts 3 arranged in parallel with the two fixed shafts 2 are arranged on the upper ends of the two fixed shafts, the movable shafts 3 are movably connected with the inner side wall of the frame body 1, and a vertical bar-shaped sliding groove 4 matched with the movable shafts 3 is formed in the inner side wall of the frame body 1.

Every is all fixed the cover to be equipped with conveying roller 5 on fixed axle 2 and the loose axle 3, and many fixed axles 2 and the outer common cover of loose axle 3 are equipped with netted elastic conveyor belt 6, all rotate on many loose axles 3 and the fixed axle 2 and are connected with a plurality of connecting blocks 7, are equipped with the elastic buffer layer 8 that the level set up between two loose axles 3, and elastic buffer layer 8 passes through connecting block 7 and is connected with loose axle 3.

Still include buffer gear, buffer gear includes and is connected and is located the fly leaf 10 of the lower extreme of loose axle 3 through connecting block 7 and loose axle 3, and every 2 upper ends of fixed axle all are equipped with the fixed plate 11 of 1 inside wall fixed connection of framework and equal level setting.

The buffer board 12 of the vertical setting of every fly leaf 10 lower side wall equal fixedly connected with, the buffer box 13 that the port opened the setting on every fixed plate 11 upper side wall equal fixedly connected with, buffer board 12 extend to buffer box 13 inside set up and with buffer box 13 in be connected with many springs 14 between the bottom surface, play the cushioning effect.

Still include dust removal mechanism, dust removal mechanism is including seting up a plurality of bleeder vents 15 of evenly arranging on elastic buffer layer 8, every is to many elastic bellows 16 of equal fixedly connected with between fly leaf 10 and the fixed plate 11, be equipped with the fixed box 17 that the level set up between two fixed axles 2, fixed box 17 passes through connecting block 7 and is connected with fixed axle 2, fixed box 17 all communicates through the pipe with a plurality of elastic bellows 16, and be provided with the check valve that only allows the air current to flow to fixed box 17 by elastic bellows 16 in the pipe, a plurality of one-way ventholes of evenly arranging are seted up to fixed box 17 side wall, it explains that, all be equipped with one-way inlet port on every elastic bellows 16, can realize gaseous by elastic bellows 16 to the one-way transport in the fixed box 17.

Still include actuating mechanism, actuating mechanism is including rotating the transmission dish 18 of connection on framework 1 lateral wall, and the pivot of transmission dish 18 is connected with gear 20 through one-way bearing, realizes gear 20's directional rotation, and the one end of every fixed axle 2 all extends to the driven plate 21 of the outside setting of framework 1 and the coaxial setting of fixedly connected with, all overlaps jointly between every driven plate 21 and the transmission dish 18 to be equipped with drive belt 22.

8 side fixedly connected with connecting bands 23 of elastic buffer layer, the other end of connecting bands 23 extends to the rack 24 of the vertical setting of framework 1 outside setting and fixedly connected with, rack 24 and framework 1 lateral wall sliding connection, rack 24 is connected with the meshing of gear 20, it is worth mentioning, install a plurality of runners 25 that match the setting with connecting bands 23 one by one on the lateral wall of the last port of framework 1, the one end of connecting bands 23 strides across runner 25 and extends to the outside setting of framework 1, runner 25 can reduce the friction of connecting bands 23 and framework 1 upper border.

Still include stabilizing mean, stabilizing mean is including setting up diaphragm 26 between fly leaf 10 and framework 1 inside wall, connecting rod and fly leaf 10 fixed connection are passed through to one side of diaphragm 26, the opposite side and framework 1 inside wall sliding connection of diaphragm 26, lateral wall fixedly connected with montant 27 under the diaphragm 26, the lower extreme fixedly connected with piston plate 28 of montant 27, be equipped with the section of thick bamboo 29 of stabilizing of vertical setting in the framework 1, it stabilizes the post 30 to stabilize a 29 lower extreme and extend to framework 1 outside setting and fixedly connected with, montant 27 extends to the inside setting of stabilizing a 29, the space of piston plate 28 lower extreme passes through one-way pipe and elasticity bellows 16 intercommunication, fixedly connected with reset spring between the bottom surface in piston plate 28 and the section of thick bamboo 29 of stabilizing.

When the device is used, parts of a motor vehicle are placed on the device through the cantilever crane, when the parts fall into the frame body 1 in the maintenance process of the motor vehicle, the elastic conveying belt 6 with elasticity can play a large role in buffering, meanwhile, the elastic conveying belt 6 can drive the two movable shafts 3 to move downwards simultaneously under the action of the gravity of the parts, and the springs 14 in the buffer boxes 13 are extruded to play a certain role in buffering, so that the parts can be effectively protected.

When a part to be maintained is provided with a tip or a bulge at the bottom, the tip or the bulge causes the part of the elastic conveying belt 6 to sag to a greater extent, so that the sagging part of the conveying belt 6 is in contact with the elastic buffer layer 8, and the elastic buffer layer 8 continuously deforms downwards, at the moment, the elastic buffer layer 8 not only plays a role of secondary buffer, but also drives the rack 24 to move upwards through the connecting belt 23 when the elastic buffer layer 8 deforms downwards, the gear 25 meshed and connected with the rack rotates along with the rack, because the one-way bearing is in a clamping state with the rotating shaft of the driving disc 18 at the moment, the driving disc 18 can be driven to rotate, so that the two fixed shafts 2 are driven to rotate through the driving belt 22 and the driven disc 21, the conveying rollers 5 can drive the elastic conveying belt 6 to move for a certain distance, and the moving elastic conveying belt 6 can assist the part to rotate for a certain angle before being separated from the cantilever crane, maintenance personnel do not need to control the slow inclination of the part by translating the cantilever, only need to control the unwinding of the hoisting cable and adjust the placing posture of the part in the inclination process, so that the operation burden of the maintenance personnel is reduced, the maintenance personnel can place more time and energy on the unwinding speed of the control cable and the posture of the adjustment part, the damage of the part due to large-amplitude overturning is effectively avoided, and the influence on subsequent maintenance operation due to improper part placing angle can be prevented; it should be noted that, when specifically designing, the diameter of transmission dish 18 is set for and is greater than the driven plate 21 diameter, and the diameter of gear 20 is set for and is less than the driven plate 21 diameter to make rack 24 take place less displacement, can drive driven plate 21 and rotate great angle, above-mentioned process can be with the less displacement of part extrusion elastic buffer layer 8 production, change the great horizontal displacement of conveyer belt 6 into, then the part is before putting steadily, supplementary its certain angle of rotation, make to hang and put the process safe high-efficient more.

In the process that the movable plate 10 moves along with the movable shaft 3, the elastic corrugated pipe 16 is extruded, the gas in the elastic corrugated pipe is sprayed out through the plurality of one-way air outlet holes in the fixed box 17, and the sprayed gas can carry out primary dust removal on parts on the elastic conveying belt 6, so that the cleaning effect is achieved.

The elastic corrugated pipe 16 is also communicated with the interior of the stabilizing cylinder 29 through a one-way guide pipe, the space below the piston plate 28 is communicated, when parts with larger weight are placed on the elastic conveying belt 6, the elastic corrugated pipe 16 can be extruded to a larger extent, a part of gas in the elastic corrugated pipe can also enter the stabilizing cylinder 29, the stabilizing column 30 is pushed to move downwards and is in contact with the ground, the stabilizing column 30 is made of rubber with softer texture, certain buffering effect can be achieved, meanwhile, effective anti-skidding can be achieved, the parts are placed, the device cannot displace, and the stability of the parts in the hanging process is guaranteed.

It should be noted that, the side wall of the stabilizing cylinder 29 is provided with micropores, since the micropores can only discharge gas slowly, there is no great influence on the downward movement process of the stabilizing cylinder 29 and the stabilizing column 30, after the component is placed stably, the gas in the stabilizing cylinder 29 is discharged slowly under the action of the return spring, and drives the stabilizing cylinder 29 to move upward, and the positioning of the whole device is released, so that the device can move freely under the push of manpower, and the component to be maintained is transferred to a specific maintenance station, by adopting the above positioning method, the universal wheel 9 at the bottom of the device does not need to be locked and positioned in advance manually, and when the component with small weight is placed, the device will not generate displacement basically, therefore, even if less air enters the stabilizing cylinder 29, the positioning effect can not be generated, there will not be great influence, and the design of this part, whether the positioning is carried out or not can be selected automatically according to the weight of the part placed on the device, so that the process of buffering and placing the large part is safer and more efficient, and the process of placing the small part is still convenient and fast.

In the present invention, unless otherwise specifically stated or limited, the terms "sliding", "rotating", "fixed", "provided", and the like are to be understood broadly, and may be, for example, welded, bolted, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.