阅读说明：本技术 一种剪切式破碎机及其刀具过载保护系统 (Shear type crusher and cutter overload protection system thereof ) 是由 舒洋 韩兵 赵吕敬 焦启飞 王利玺 于 2021-08-25 设计创作，主要内容包括：本发明公开一种刀具过载保护系统,包括可旋转地设置于机架上的刀轴、设置于刀轴圆周面上的动刀、可翻转地连接于机架上的刀座、设置于刀座上并与动刀啮合的定刀,以及设置于机架上并与刀座相连的第一驱动部件,用于在动刀与定刀间的压力过载时驱动刀座翻转以使两者脱离啮合状态并留出间隙供异物通过。如此,本发明所提供的刀具过载保护系统,在动刀与定刀件的压力过载时,通过第一驱动部件对刀座的驱动作用,使得定刀随刀座翻转后脱离与动刀的啮合,并留出较大间隙使异物及时掉落,能够实现对剪切式破碎机的刀具过载保护,防止刀具过载时被损坏,避免设备过载停机,提高生产效率。本发明还公开一种剪切式破碎机。(The invention discloses a cutter overload protection system, which comprises a cutter shaft, a movable cutter, a cutter seat, a fixed cutter and a first driving part, wherein the cutter shaft is rotatably arranged on a rack, the movable cutter is arranged on the circumferential surface of the cutter shaft, the cutter seat is connected to the rack in a turnover mode, the fixed cutter is arranged on the cutter seat and is meshed with the movable cutter, and the first driving part is arranged on the rack and is connected with the cutter seat and is used for driving the cutter seat to overturn when the pressure between the movable cutter and the fixed cutter is overloaded so as to enable the movable cutter and the fixed cutter to be separated from a meshing state and leave a gap for foreign matters to pass through. Therefore, the cutter overload protection system provided by the invention has the advantages that when the pressure of the movable cutter and the fixed cutter is overloaded, the fixed cutter is separated from being meshed with the movable cutter after being overturned along with the cutter holder through the driving action of the first driving part on the cutter holder, and a larger gap is reserved to enable foreign matters to fall off in time, so that the cutter overload protection of the shear type crusher can be realized, the cutter is prevented from being damaged when being overloaded, the overload shutdown of equipment is avoided, and the production efficiency is improved. The invention also discloses a shear type crusher.)

1. The cutter overload protection system is characterized by comprising a cutter shaft (2) rotatably arranged on a rack (1), a movable cutter (3) arranged on the periphery of the cutter shaft (2), a cutter seat (4) connected to the rack (1) in a turnover manner, a fixed cutter (5) arranged on the cutter seat (4) and engaged with the movable cutter (3), and a first driving part (6) arranged on the rack (1) and connected with the cutter seat (4), wherein the cutter shaft (3) and the fixed cutter (5) are driven by pressure overload between the movable cutter and the fixed cutter to overturn the cutter seat (4) so that the cutter shaft and the fixed cutter are disengaged and leave a gap for passing foreign matters.

2. Tool overload protection system according to claim 1, characterised in that the output of the first drive member (6) is connected to the bottom of the end face of the tool holder (4), the top of the end face of the tool holder (4) being rotatably suspended from the machine frame (1).

3. The cutter overload protection system according to claim 2, wherein the first driving part (6) is a driving cylinder, the head end of the cylinder sleeve of the first driving part (6) is rotatably connected to the upper end of the machine frame (1), and the tail end of the cylinder rod of the first driving part (6) is rotatably connected to the bottom of the end surface of the cutter holder (4).

4. The cutter overload protection system according to claim 1, further comprising a hopper (7) arranged on the frame (1), wherein the cutter shaft (2) is arranged in the hopper (7), and the movable cutter (3) and the fixed cutter (5) are engaged at a discharge port of the hopper (7).

5. The cutter overload protection system according to claim 4, further comprising a conveyor (8) arranged below the discharge port of the hopper (7) and used for containing foreign matters falling from the space between the movable cutter (3) and the fixed cutter (5).

6. The cutter overload protection system according to claim 4, further comprising a screen (9) which is connected to the frame (1) in a reversible manner and covers a discharge port of the hopper (7) and is used for containing materials crushed by the movable cutter (3) and the fixed cutter (5), and a second driving part (10) which is arranged on the frame (1) and connected with the screen (9) and is used for driving the screen (9) to overturn to avoid a falling path of foreign matters when the pressure between the movable cutter (3) and the fixed cutter (5) is overloaded.

7. Tool overload protection system according to claim 6, characterized in that the screen (9) is circular-arc shaped and that the lower half of the arbor (2) is received in the screen (9).

8. Tool overload protection system according to claim 6, characterised in that the end of the screen cloth (9) is rotatably connected to the frame (1), that the second drive member (10) is a drive cylinder, and that the cylinder jacket head end of the second drive member (10) is rotatably connected to the lower end of the frame (1), and that the cylinder rod end of the second drive member (10) is rotatably connected to the bottom of the screen cloth (9).

9. Tool overload protection system according to any one of claims 1 to 8, characterized in that the stationary knife (5) is arranged radially movably on the knife holder (4), and in that an adjusting bolt (11) for screw-adjusting the radially displaced position of the stationary knife (5) is arranged on an end face of the knife holder (4).

10. A shear crusher comprising a frame (1) and a tool overload protection system arranged on the frame (1), characterized in that the tool overload protection system is in particular a tool overload protection system according to any one of claims 1-9.

Technical Field

The invention relates to the technical field of crushers, in particular to a cutter overload protection system. The invention also relates to a shear crusher.

Background

The shear type crusher is widely used for crushing and volume reduction treatment of various wastes in the environmental protection industry.

The components of the materials to be crushed are complex, the working environment of the core component of the shear type crusher, namely the cutter head (comprising the movable cutter and the fixed cutter) is severe, and the cutter head is easy to break or damage after long-term use. The traditional shear type crusher is not provided with a protection system of a cutter head, and can be stopped, cleaned and maintained only after abnormal noise of equipment, cutter shaft jamming or motor overload protection is discovered, or the cutter damage condition is discovered only during daily shutdown and maintenance.

The existing shear crushers generally have the following disadvantages: the existing equipment adopts the structural form that the cutter shaft rotates and the fixed cutter is fixed on the box body, so that when the equipment enters the hard foreign matters and cannot be crushed, part of the cutters in the equipment without the active protection measures are directly damaged, and part of the equipment or the equipment adopting the motor overload protection stops working through the motor overload when the hard foreign matters cannot be crushed, so that although the motor can be effectively protected, the cutters still have the overload damage risk. In addition, after the cutter is damaged or the equipment is shut down, manual cleaning or operation is required, so that the automation degree is low, and the manual load is large; moreover, if the equipment is frequently stopped for maintenance or the cutter is replaced, the production efficiency is inevitably reduced, and the production cost is increased.

Therefore, how to realize the cutter overload protection of the shear type crusher, prevent the cutter from being damaged when in overload, avoid equipment overload shutdown and improve production efficiency is a technical problem faced by technical personnel in the field.

Disclosure of Invention

The invention aims to provide a cutter overload protection system which can realize cutter overload protection of a shear type crusher, prevent a cutter from being damaged when the cutter is overloaded, avoid equipment overload shutdown and improve production efficiency. It is another object of the present invention to provide a shear crusher.

In order to solve the technical problem, the invention provides a cutter overload protection system which comprises a cutter shaft, a movable cutter, a cutter seat, a fixed cutter and a first driving part, wherein the cutter shaft is rotatably arranged on a rack, the movable cutter is arranged on the circumferential surface of the cutter shaft, the cutter seat is connected to the rack in a turnover mode, the fixed cutter is arranged on the cutter seat and is meshed with the movable cutter, and the first driving part is arranged on the rack and is connected with the cutter seat, and is used for driving the cutter seat to turn over when the pressure between the movable cutter and the fixed cutter is overloaded so as to enable the movable cutter and the fixed cutter to be disengaged and leave a gap for foreign matters to pass through.

Preferably, the output end of the first driving component is connected with the bottom of the end surface of the tool apron, and the top of the end surface of the tool apron is rotatably hung on the rack.

Preferably, the first driving part is a driving cylinder, the head end of a cylinder sleeve of the first driving part is rotatably connected to the upper end of the machine frame, and the tail end of a cylinder rod of the first driving part is rotatably connected to the bottom of the end surface of the tool apron.

Preferably, the cutter shaft is arranged in the hopper, and the movable cutter and the fixed cutter are meshed at the discharge outlet of the hopper.

Preferably, the automatic feeding device further comprises a conveyer which is arranged below the discharge port of the hopper and used for containing foreign matters falling from the space between the movable knife and the fixed knife.

Preferably, still including connect in can overturning in the frame and cover in the discharge gate department of hopper, be used for the splendid attire by the screen cloth of the broken material of moving sword with the stationary knife, and set up in the frame and with the second driver part that the screen cloth links to each other is used for move the sword with the pressure between the stationary knife is overloaded the drive the screen cloth upset is in order to avoid the route that drops of a foreign matter.

Preferably, the screen is arc-shaped, and the lower half part of the cutter shaft is accommodated in the screen.

Preferably, the end of the screen mesh is rotatably connected to the frame, the second driving member is a driving cylinder, the head end of the cylinder sleeve of the second driving member is rotatably connected to the lower end of the frame, and the tail end of the cylinder rod of the second driving member is rotatably connected to the bottom of the screen mesh.

Preferably, the fixed cutter is radially movably disposed on the cutter holder, and an adjusting bolt for screwing and adjusting a radially moving position of the fixed cutter is disposed on an end surface of the cutter holder.

The invention also provides a shear type crusher, which comprises a rack and a cutter overload protection system arranged on the rack, wherein the cutter overload protection system is specifically any one of the cutter overload protection systems.

The invention provides a cutter overload protection system which mainly comprises a cutter shaft, a movable cutter, a cutter holder, a fixed cutter and a first driving part. Wherein, the arbor sets up on the frame to can carry out rotary motion on the frame. The movable knife is arranged on the circumferential surface of the knife shaft and synchronously rotates along with the rotation of the knife shaft, and is mainly used for forming meshing fit with the fixed knife so as to crush and destroy materials arranged between the movable knife and the fixed knife. The tool apron is arranged on the machine frame and can perform overturning motion on the machine frame. The stationary knife is disposed on the knife holder, and is generally stationary and is primarily used to form a meshing engagement with the rotating moving knife. First driver part sets up in the frame to its output links to each other with the blade holder, and mainly used drives the blade holder and carries out upset motion in the frame, and when detecting that the pressure between moving sword and the stationary knife is too big, reach and predetermine the threshold value (transship promptly) at shear type breaker's electrical control system, the upset through the blade holder moves the stationary knife and carries out the upset in step, so that the stationary knife breaks away from and moves the meshing of sword, leaves great clearance simultaneously between stationary knife and moving sword, and the confession is difficult to broken foreign matter to pass through. Of course, after the foreign matter passes through, the first driving part can re-drive the tool apron to reversely turn over, so that the fixed knife is re-engaged with the movable knife, and the crushing operation is continued. Therefore, the cutter overload protection system provided by the invention has the advantages that when the pressure of the movable cutter and the fixed cutter is overloaded, the fixed cutter is separated from being meshed with the movable cutter after being overturned along with the cutter holder through the driving action of the first driving part on the cutter holder, and a larger gap is reserved to enable foreign matters to fall off in time, so that the cutter overload protection of the shear type crusher can be realized, the cutter is prevented from being damaged when being overloaded, the overload shutdown of equipment is avoided, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of the engagement structure of the movable knife and the fixed knife.

Wherein, in fig. 1-2:

the automatic cutter comprises a rack-1, a cutter shaft-2, a movable cutter-3, a cutter holder-4, a fixed cutter-5, a first driving part-6, a hopper-7, a conveyor-8, a screen-9, a second driving part-10, an adjusting bolt-11 and a fastening bolt-12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

In a specific embodiment provided by the invention, the cutter overload protection system mainly comprises a cutter shaft 2, a movable cutter 3, a cutter holder 4, a fixed cutter 5 and a first driving part 6.

Wherein, the cutter shaft 2 is arranged on the frame 1 and can rotate on the frame 1. The movable knife 3 is arranged on the circumferential surface of the knife shaft 2, synchronously rotates along with the rotation of the knife shaft 2, and is mainly used for forming meshing fit with the fixed knife 5 so as to crush and destroy the materials arranged between the movable knife 3 and the fixed knife 5.

The blade holder 4 is arranged on the machine frame 1 and can perform a tilting movement on the machine frame 1. The stationary knife 5 is arranged on the knife holder 4, usually stationary, and is primarily intended to form a meshing engagement with the rotating movable knife 3.

The first driving part 6 is arranged on the rack 1, the output end of the first driving part is connected with the cutter holder 4, and the first driving part is mainly used for driving the cutter 3 holder to perform overturning motion on the rack 1, so that when an electrical control system of the shear type crusher detects that the pressure between the movable cutter 3 and the fixed cutter 5 is too large and reaches a preset threshold value (namely overload), the fixed cutter 5 is driven to synchronously overturn through the overturning motion of the cutter holder 4, so that the fixed cutter 5 is separated from the engagement with the movable cutter 3, and meanwhile, a large gap is reserved between the fixed cutter 5 and the movable cutter 3 for the passage of foreign matters which are difficult to crush.

Of course, after the foreign matter passes through, the first driving member 6 can drive the movable blade 3 base to reversely turn over again, so that the fixed blade 5 is again meshed with the movable blade 3, and the crushing operation is continued. As shown in fig. 2, fig. 2 is a schematic view of the engagement structure of the movable blade 3 and the fixed blade 5.

So, the cutter overload protection system that this embodiment provided, when moving the pressure overload of sword 3 and 5 stationary knives, through the driving action of first driver part 6 to blade holder 4 for stationary knife 5 breaks away from and moves the meshing of sword 3 along with blade holder 4 upset back, and reserve great clearance and make the foreign matter in time drop, can realize the cutter overload protection to shear type breaker, is damaged when preventing the cutter from transshipping, avoids equipment overload to shut down, improves production efficiency.

In a preferred embodiment of the first driving member 6, in order to drive the blade 3 to perform the turning motion, the output end of the first driving member 6 is connected to the bottom of the outer end surface of the blade holder 4 (the inner end surface of the blade holder 4 is arc-shaped and is mainly used for installing the fixed blade 5), and meanwhile, the top of the outer end surface of the blade holder 4 is hung on the rack 1 and is specifically connected to the rack 1 through a pin, a pin shaft and the like, so that the rotating motion can be performed on the rack 1. So set up, when the output of first driver part 6 pulled the outer end terminal surface bottom of sword 3 seat, blade holder 4 will rotate around the continuous position of its outer end terminal surface top and frame 1 under power drive to make blade holder 4 wholly outwards overturn (the anticlockwise upset of picture) or inwards overturn (the clockwise upset of picture).

Further, in order to facilitate the first driving member 6 to drive the blade 3 to turn, in this embodiment, the first driving member 6 is specifically a driving cylinder, such as a hydraulic cylinder, an electric cylinder, a pneumatic cylinder, or the like. Meanwhile, the head end of the cylinder sleeve of the driving cylinder is connected to the upper end position of the frame 1 and is connected through a revolute pair, and the tail end of the lever of the driving cylinder is connected to the bottom position of the end face of the cutter holder 4 and is also connected through a revolute pair. With the arrangement, when the lever of the driving cylinder retracts, the base of the pull knife 3 is turned outwards, so that the fixed knife 5 is disengaged from the movable knife 3 and a gap is reserved; on the contrary, when the lever of the driving cylinder extends, the movable knife 3 is pushed to turn inwards, so that the fixed knife 5 and the movable knife 3 are meshed and the gap is reduced.

In addition, in order to add materials, the frame 1 is further provided with a hopper 7. Accordingly, in the present embodiment, the knife shaft 2 is specifically provided in the hopper 7, and can perform a rotational motion in the hopper 7. Meanwhile, the movable knife 3 and the fixed knife 5 are specifically meshed at the discharge port of the hopper 7. Specifically, the movable knife 3 is positioned on the inner side of the discharge hole of the hopper 7, the fixed knife 5 is positioned on the outer side of the discharge hole 7 of the hopper 7, and a certain inherent gap is reserved between the movable knife 3 and the fixed knife 5. When the material is added into the feed hopper 7, the material falls down along the inner wall of the cambered surface of the feed hopper 7 into the inherent gap between the movable knife 3 and the fixed knife 5 to be crushed and damaged in the meshing process.

Further, in order to collect the foreign matters which are difficult to break, the present embodiment is further provided with a conveyor 8 below the discharge port of the hopper 7. Specifically, the conveying surface of the conveyor 8 faces the discharge port of the hopper 7 and is located at the projection of the gap between the movable blade 3 and the fixed blade 5, and when foreign matters fall from the gap between the movable blade 3 and the fixed blade 5, the foreign matters are received by the conveyor 8 and conveyed to a specified position.

Furthermore, considering that the hard-to-crush foreign matters usually only occupy a small part of all the materials in the feeding hopper 7, most of the materials are normal materials which can be crushed normally, and the normal materials are crushed by the movable knife 3 and the fixed knife 5 to form powder, in order to collect the crushed powder, the screen 9 is added in the embodiment. Specifically, the screen 9 is connected to the frame 1 and located at a discharge port of the hopper 7, and is mainly used for receiving materials crushed by the driven knife 3 and the fixed knife 5.

Furthermore, in order to prevent foreign matters from falling from the gap between the movable blade 3 and the fixed blade 5 and then mixing into the screen 9, a second driving member 10 is added in the present embodiment. Specifically, this second drive assembly 10 sets up in frame 1 to its output links to each other with screen cloth 9, and screen cloth 9's one end and frame 1 rotate to be connected, thereby can drive screen cloth 9 and carry out the upset motion on frame 1 under the power take off of second drive assembly 10, and then when moving the pressure overload between sword 3 and stationary knife 5, ensure that screen cloth 9 overturns to the angle of enough avoiding the route that drops of a foreign matter, make the foreign matter avoid screen cloth 9 when dropping smoothly, thereby accurately drop into on the conveyer 8.

Generally, in order to prevent the crushed powder of the common materials from falling, the screen 9 covers the discharge opening of the hopper 7 as a whole, but in order to ensure that the fixed knives 5 can be smoothly meshed with the movable knives 3 at the discharge opening of the hopper 7, the end of the screen 9 is usually located at the lower region of the fixed knives 5, so as to leave a space for the fixed knives 5 to be meshed with the movable knives 3. Of course, when the foreign matter drops, the second driving part 10 needs to first move to drive the screen 9 to perform the turning motion (clockwise turning in the figure), and then the first driving part 6 moves to drive the knife 3 and the stationary knife 5 to perform the turning motion (counterclockwise turning in the figure), so as to avoid the generation of motion interference and smoothly leave a foreign matter drop path.

In a preferred embodiment with respect to the screen mesh 9, the screen mesh 9 is embodied in the form of a circular arc, and the axial center of the knife shaft 2 is located at the discharge opening of the hopper 7, while the upper half of the knife shaft 2 is located inside the hopper 7 and the lower half of the knife shaft 2 is located outside the hopper 7 while being accommodated inside the screen mesh 9 and shielded by the screen mesh 9.

In a preferred embodiment with respect to the second drive member 10, the second drive member 10 is embodied as a drive cylinder, such as a hydraulic cylinder, an electric cylinder, a pneumatic cylinder or the like. Meanwhile, the head end of the cylinder sleeve of the driving cylinder is connected to the lower end position of the frame 1 and is connected through a revolute pair, and the tail end of the lever of the driving cylinder is connected to the bottom position of the screen 9 and is also connected through a revolute pair. With the arrangement, when the lever of the driving cylinder retracts, the screen mesh 9 is pulled to turn outwards, so that the tail end of the screen mesh is separated from the butt joint of the bottom surface of the fixed knife 5, and a turning space of the fixed knife 5 is reserved; conversely, when the lever of the actuating cylinder is extended, the screen 9 is pushed to turn inwards, so that the tail end of the screen 9 is restored to be abutted against the bottom surface of the fixed knife 5 and the discharge hole of the hopper 7 is completely covered.

Generally, in order to improve the crushing operation efficiency of the shear type crusher, the cutter shaft 2 has a large axial length, and a plurality of movable cutters 3 are uniformly distributed on the circumferential surface of the cutter shaft 2 along the axial direction. Accordingly, in order to cooperate with the plurality of movable blades 3, the plurality of fixed blades 5 and the plurality of tool holders 4 are also provided simultaneously. Specifically, the blade holder 4 has a plurality ofly along axial direction simultaneous distribution on frame 1, and likewise, stationary knife 5 also has a plurality ofly along axial direction simultaneous distribution on blade holder 4 to form the meshing simultaneously with a plurality of moving sword 3 that axial distributes, so that many places operation simultaneously improves the operating efficiency.

Further, considering that the foreign matters difficult to crush can only appear at a certain position or a certain number of positions in the axial direction of the cutter shaft 2, if the whole screen 9 and the cutter holder 4 are turned over in order to discharge the foreign matters, all the normally crushed materials in the axial direction are inevitably discharged onto the conveyor 8 at the same time, which causes material waste, and for this reason, in this embodiment, the screen 9 and the cutter holder 4 are in a split structure.

Specifically, the screen 9 is divided into a plurality of sub-nets along the axial direction, and the axial length of each sub-net is enough to cover one moving blade 3 or a plurality of moving blades 3. Similarly, the tool apron 4 is divided into a plurality of sections of sub-bases along the axial direction, and the axial length of each section of sub-base is enough to cover one fixed knife 5 or a plurality of fixed knives 5 corresponding to the movable knife 3.

Similarly, the first driving component 6 and the second driving component 10 are respectively provided in plurality, and are distributed on the rack 1 along the axial direction, and are respectively used for driving the sub-net and the sub-base corresponding to each other to perform the turning motion. So set up, when shear type breaker's electrical control system detected the foreign matter, can judge the concrete position of foreign matter at first, be in which one section or which section subnet and the zone that corresponds of sub-seat, then control corresponding first drive component 6 and second drive component 10 and move to accurate subnet and the sub-seat that overturn and correspond makes the foreign matter drop from the clearance between the interior moving knife 3 of zone that corresponds and stationary knife 5, it is extravagant to reduce the material.

In another embodiment of the present invention, the tool overload protection system further includes an adjusting bolt 11 in addition to the arbor 2, the movable blade 3, the tool holder 4, the fixed blade 5 and the first driving member 6.

Wherein the adjusting bolt 11 is inserted on the outer end face of the tool apron 4 and extends inwards in the tool apron 4 to be connected with the end of the fixed knife 5. Meanwhile, in the present embodiment, the fixed blade 5 is connected to the blade holder 4 in a floating manner, and can move on the blade holder 4 in the radial direction to adjust the radial position. And the adjusting bolt 11 and the end of the fixed knife 5 form a thread transmission connection, and when the adjusting bolt 11 is screwed, the fixed knife 5 is driven to perform linear motion along the radial direction of the knife holder 4 or the knife shaft 2. When the fixed blade 5 is adjusted to the target radial position, the fixed blade 5 can be fixed again to the blade holder 4 by fastening a bolt 12 or the like. So set up, through adjusting bolt 11 to the radial position regulation of stationary knife 5, can conveniently adjust the inherent clearance between moving sword 3 and the stationary knife 5 to can suitably reduce this inherent clearance, with improve crushing effect when broken soft material or tiny particle material, or can suitably increase this inherent clearance, with improve crushing effect when broken large granule material.

The embodiment further provides a shear type crusher, which mainly comprises a frame 1 and a cutter overload protection system arranged on the frame 1, wherein the specific content of the cutter overload protection system is the same as the related content, and the details are not repeated here.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.