阅读说明：本技术 一种物理教学演示装置及方法 (Physical teaching demonstration device and method ) 是由 叶剑斌 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种物理教学演示装置及方法,涉及物理教学技术领域,包括箱体,所述箱体的底面固定安装有滚动轮,所述箱体的正面开设有观察口,所述观察口的内壁固定连接有玻璃罩,所述箱体的正面固定安装有压力显示器,所述箱体的内底壁固定连接有托板,所述托板的上表面固定连接有压力传感器,所述箱体的左侧面开设有落料口,所述箱体的外表面固定安装有收纳机构。该物理教学演示装置及方法,能够通过电磁圈通电启动产生磁力,由教师将铁质球从进料管下放,经过下落弯管进行减速下落到接料座的内部吸附在电磁圈的内部,能够快速对铁质球进行固定,适用性较强,提高了教学试验速度,使学生都能够进行动手操作。(The invention discloses a physical teaching demonstration device and a physical teaching demonstration method, which relate to the technical field of physical teaching and comprise a box body, wherein rolling wheels are fixedly arranged on the bottom surface of the box body, an observation port is formed in the front surface of the box body, a glass cover is fixedly connected to the inner wall of the observation port, a pressure display is fixedly arranged on the front surface of the box body, a supporting plate is fixedly connected to the inner bottom wall of the box body, a pressure sensor is fixedly connected to the upper surface of the supporting plate, a blanking port is formed in the left side surface of the box body, and an accommodating mechanism is fixedly arranged on the outer surface of. This physical teaching presentation device and method can start through the electromagnetism circle circular telegram and produce magnetic force, transfers the iron ball from the inlet pipe by the teacher, and the inside absorption that falls to the material receiving seat through the whereabouts return bend is in the inside of electromagnetism circle, can fix the iron ball fast, and the suitability is stronger, has improved teaching test speed, makes the student can both carry out the manual operation.)

1. The utility model provides a physical teaching presentation device, includes box (7), the bottom surface fixed mounting of box (7) has rolling wheel (6), two symmetrical handle (4) of left surface fixedly connected with of box (7), viewing aperture (9) have been seted up in the front of box (7), inner wall fixedly connected with glass cover (8) of viewing aperture (9), the front fixed mounting of box (7) has pressure display (10), inner diapire fixedly connected with layer board (11) of box (7), the last fixed surface of layer board (11) is connected with pressure sensor (12), blanking mouth (5), its characterized in that have been seted up to the left surface of box (7): the outer fixed surface of box (7) installs receiving mechanism (2), the inside fixed mounting of box (7) has adjustment mechanism (1), the last fixed surface of box (7) installs feed mechanism (3).

2. A physical teaching presentation device according to claim 1 wherein: adjustment mechanism (1) includes scale strip (101), spout (102), leads to groove (103), slider (104), bracing piece (105), pointer (106) and cylinder (107), logical groove (103), every have all been seted up to the left and right sides face of box (7) the inside that leads to groove (103) all placed with the bracing piece (105) that leads to groove (103) looks adaptation, every the equal fixedly connected with two symmetrical pointer (106) of surface of bracing piece (105), and the surface of pointer (106) contacts with the surface of box (7), two sets of symmetrical scale strip (101) have all been seted up to the left and right sides face of box (7), every the equal fixed connection cylinder (107) of upper surface of bracing piece (105), two the stiff end of cylinder (107) all with the interior roof fixed connection of box (7).

3. A physical teaching presentation device according to claim 2 wherein: the storage mechanism (2) comprises a soft pad (201), a storage bin (202), a knob (203), a hinge (204), a sealing cover (205), a through hole (206), a first threaded hole (207), a threaded rod (208), a rubber pad (209), a second threaded hole (210) and a screw (211), the storage bin (202) is fixedly connected to the outer surface of the box body (7), the storage bin (202) is located under the blanking port (5), the first threaded hole (207) is formed in the bottom surface of the storage bin (202), the threaded rod (208) is connected to the inner thread of the first threaded hole (207), the rubber pad (209) is fixedly connected to the top end of the threaded rod (208), the knob (203) is fixedly connected to the bottom end of the threaded rod (208), the sealing cover (205) is fixedly hinged to the outer surface of the storage bin (202) through the hinge (204), the through hole (206) is formed in the outer surface of the sealing cover (, a second threaded hole (210) is formed in the upper surface of the containing bin (202), and a screw (211) is connected to the inner thread of the second threaded hole (210) in a threaded mode.

4. A physical teaching presentation device according to claim 3 wherein: feed mechanism (3) include inlet pipe (301), positioning claw (302), whereabouts return bend (303), connect material seat (304), electromagnetic ring (305) and shock pad (306), two place electromagnetic ring (305) between bracing piece (105), and two bracing pieces (105) a side that is close to each other all with the fixed surface of electromagnetic ring (305) be connected, positioning claw (302) that the bottom surface fixedly connected with equidistance of electromagnetic ring (305) was arranged, the last fixed surface of electromagnetic ring (305) is connected with and connects material seat (304) that is the loudspeaker form, inlet pipe (301) have been placed to the inside of box (7), and inlet pipe (301) are located electromagnetic ring (305) directly over, the top of inlet pipe (301) runs through the interior roof of box (7) and extends to the top of box (7).

5. A physical teaching presentation device according to claim 3 wherein: the inner wall of the containing bin (202) is fixedly connected with a soft pad (201).

6. A physical teaching presentation device according to claim 2 wherein: each sliding groove (102) is formed in the inner wall of each through groove (103), two sliding blocks (104) matched with the sliding grooves (102) are fixedly connected to the outer surface of each supporting rod (105), and the sliding blocks (104) are clamped inside the sliding grooves (102).

7. A physical teaching presentation device according to claim 4 wherein: the bottom end of the feeding pipe (301) is fixedly communicated with a falling elbow pipe (303), and the falling elbow pipe (303) is positioned right above the material receiving seat (304).

8. A physical teaching presentation device according to claim 4 wherein: the inner wall of the material receiving seat (304) is fixedly connected with shock pads (306) which are arranged at equal intervals, and the shock pads (306) are made of butyl rubber.

9. a teaching demonstration method of a physical teaching demonstration apparatus according to any one of claims 1 to 8, the physical teaching demonstration method comprising the steps of:

S1: when in a cleaning state: at first be linked together pressure sensor 12, pressure display 10, cylinder 107 and electromagnetic coil 305 with the power, electromagnetic coil 305 circular telegram starts and produces magnetic force, transfers the iron ball from inlet pipe 301 by the teacher, and the inside absorption that falls to material receiving seat 304 is in electromagnetic coil 305's inside through whereabouts return bend 303 slows down, can fix the iron ball fast, and the suitability is stronger, has improved teaching test speed, makes the student can both carry out the manual operation.

S2: reading and displaying states: the cylinder 107 is electrified to start to drive the supporting rod 105 and the electromagnetic coil 305 to move, the height of the iron ball is determined by observing the position of the pointer 106 on the scale bar 101 through a teacher, the teaching test is carried out, the height is adjusted more quickly and accurately, and the error is reduced.

S3: in the protection state: 305 outage magnetic force disappears, the iron ball falls from electromagnetic ring 305 and detects with pressure sensor 12 contact, show the digit by pressure display 10 and make the student watch, the iron ball drops to the inside of collecting chamber 202 from blanking mouth 5 departure from layer board 11 department gliding, teaching experiment accomplishes the back, turn hinge 204 and fix collecting chamber 202 and closing cap 205 with screw 211, avoid the device iron ball to appear losing need purchase during idle, can use for a long time, avoid unnecessary teaching test apparatus's spending.

Technical Field

The invention relates to the technical field of physical teaching, in particular to a physical teaching demonstration device and a physical teaching demonstration method.

Background

Physics is the subject of studying the most general law of motion and basic structure of substances, and is the leading subject of natural science, and the theory of physics studies the most basic motion form and law of all substances, such as universe, particles, etc., so it becomes the research foundation of other natural science subjects.

Physics is as one of the indispensable subjects of repairing, because gravity does not have the object in physics, when the teacher was giving a lesson, the student can not directly perceivedly observe to understand that speed is slower, can not follow course arrangement, has reduced the teaching quality, and current physics teaching experimental apparatus does not have enough time to satisfy every student's manual operation in the classroom and experiences because of the experiment speed is slower. Therefore, a physical teaching demonstration device and a physical teaching demonstration method are provided for solving the problems.

Disclosure of Invention

The invention aims to make up for the defects of the prior art, provides a physical teaching demonstration device and a method, has the advantages of higher intuition, high teaching demonstration speed and convenience for students to operate, and solves the problem of low speed of the prior physical teaching experiment.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a physical teaching presentation device and method, includes the box, the bottom surface fixed mounting of box has the wheel that rolls, two symmetrical handles of left surface fixedly connected with of box, the viewing aperture has been seted up in the front of box, the inner wall fixedly connected with glass cover of viewing aperture, the front fixed mounting of box has pressure display, the interior diapire fixedly connected with layer board of box, the last fixed surface of layer board is connected with pressure sensor, the blanking mouth has been seted up to the left surface of box, its characterized in that: the outer fixed surface of box installs receiving mechanism, the inside fixed mounting of box has adjustment mechanism, the last fixed surface of box installs feed mechanism.

Further, adjustment mechanism includes scale strip, spout, leads to groove, slider, bracing piece, pointer and cylinder, logical groove has all been seted up to the left and right sides face of box, every the bracing piece with leading to groove looks adaptation is all placed to the inside that leads to the groove, every two symmetrical pointers of the equal fixedly connected with in surface of bracing piece, and the surface of pointer and the surface of box contact, two sets of symmetrical scale strips, every are all seted up to the left and right sides face of box the equal fixed connection cylinder in upper surface of bracing piece, two the stiff end of cylinder all with the interior roof fixed connection of box.

Through adopting above-mentioned technical scheme, height-adjusting is quick accurate more, reduces the production of error, makes student's cognition clear more directly perceived.

Further, the storage mechanism comprises a soft pad, a storage bin, a knob, a hinge, a sealing cover, a through hole, a first threaded hole, a threaded rod, a rubber pad, a second threaded hole and a screw, the outer surface of the box body is fixedly connected with the storage bin, the storage bin is located under the blanking port, the first threaded hole is formed in the bottom surface of the storage bin, the threaded rod is connected with the internal thread of the first threaded hole, the rubber pad is fixedly connected to the top end of the threaded rod, the knob is fixedly connected to the bottom end of the threaded rod, the sealing cover is fixedly hinged to the outer surface of the storage bin through the hinge, the through hole is formed in the outer surface of the sealing cover, the second threaded hole is formed in the upper surface of the storage bin, and the screw is connected to the.

Through adopting above-mentioned technical scheme, avoid the device to appear losing need purchase in iron ball during idle, can use for a long time, avoid unnecessary teaching test appliances's spending.

Further, feed mechanism includes inlet pipe, locating claw, whereabouts return bend, connects material seat, electromagnetic ring and shock pad, two the electromagnetic ring has been placed between the bracing piece, and the side that two bracing pieces are close to each other all with the outer fixed surface of electromagnetic ring be connected, the locating claw that the bottom surface fixedly connected with equidistance was arranged of electromagnetic ring, the last fixed surface of electromagnetic ring is connected with and is the material seat that connects of loudspeaker form, the inlet pipe has been placed to the inside of box, and the inlet pipe is located the electromagnetic ring directly over, the top of inlet pipe runs through the interior roof of box and extends to the top of box.

Through adopting above-mentioned technical scheme, can fix the iron ball fast, the suitability is stronger, has improved the teaching test speed, makes the student can both carry out manual operation.

furthermore, the inner wall of the storage bin is fixedly connected with a soft pad.

Through adopting above-mentioned technical scheme, can cushion the iron ball of whereabouts, vibrations and noise appear in the inner wall of avoiding the iron ball direct impact collecting storage facility.

Further, every the spout has all been seted up to the inner wall that leads to the groove, every the equal fixedly connected with of surface of bracing piece two with the slider of spout looks adaptation, and the slider joint is in the inside of spout.

Through adopting above-mentioned technical scheme, it is more convenient to make the bracing piece slide, avoids the bracing piece to appear the problem that the card is dunked when sliding.

Furthermore, the bottom end of the feeding pipe is fixedly communicated with a falling elbow pipe, and the falling elbow pipe is positioned right above the material receiving seat.

Through adopting above-mentioned technical scheme, can carry out the speed reduction to the iron ball and handle, avoid the direct whereabouts of iron ball to cause the damage to the device internals.

Furthermore, the inner wall of the material receiving seat is fixedly connected with shock pads which are arranged at equal intervals and made of butyl rubber.

By adopting the technical scheme, the elasticity and the wear-resisting property of the butyl rubber are utilized, so that the service life of the butyl rubber is long.

Further, the demonstration method comprises the following steps:

Further, the physical teaching demonstration method comprises the following specific steps:

s1: when in a cleaning state: at first be linked together pressure sensor, pressure display, cylinder and electromagnetic coil and power, electromagnetic coil circular telegram starts and produces magnetic force, transfers the iron ball from the inlet pipe by the teacher, and the inside absorption that connects the material seat is fallen to the speed reduction through the whereabouts return bend in the inside of electromagnetic coil, can fix the iron ball fast, and the suitability is stronger, has improved teaching test speed, makes the student can both carry out manual operation.

S2: reading and displaying states: the cylinder is electrified to start to drive the supporting rod and the electromagnetic ring to move, the height of the pointer on the scale bar is observed by a teacher to determine the height of the iron ball, the teaching test is carried out, the height is adjusted more quickly and accurately, and errors are reduced.

S3: in the protection state: the outage magnetic force disappears, the iron ball falls and detects with the pressure sensor contact in the electromagnetic ring, show the digit by pressure display and make the student watch, the iron ball slides down from layer board department and drops to the inside of collecting storage from the blanking mouth departure, teaching test accomplishes the back, it is fixed with collecting storage and closing cap to turn the hinge with the screw, avoid the device iron ball to appear losing the needs purchase in idle period, can use for a long time, avoid unnecessary teaching test apparatus's spending.

Compared with the prior art, the physical teaching demonstration device and the method have the following beneficial effects:

according to the invention, the electromagnetic ring is electrified and started to generate magnetic force, the iron ball is placed down from the feeding pipe by a teacher and falls into the material receiving seat through the falling elbow pipe in a speed reducing manner to be adsorbed in the electromagnetic ring, so that the iron ball can be rapidly fixed, the applicability is strong, the teaching test speed is improved, and students can operate the electromagnetic ring manually.

the iron ball falls from the electromagnetic ring and is in contact with the pressure sensor for detection, the pressure display shows numbers to enable students to watch the iron ball, the iron ball slides down from the supporting plate and flies out of the blanking port and falls into the containing bin, after the teaching test is completed, the containing bin and the sealing cover are fixed by turning the hinge and using screws, the iron ball is prevented from being lost and needing to be purchased during the idle period, the iron ball can be used for a long time, and the expenditure of unnecessary teaching test tools is avoided.

Drawings

FIG. 1 is a perspective view of the housing of the present invention;

FIG. 2 is a cross-sectional view of a front view of the storage compartment of the present invention;

FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is a cross-sectional view of a front view of the housing of the present invention;

Fig. 6 is a sectional view of the front view of the material receiving seat of the invention.

In the figure: 1. an adjustment mechanism; 101. a scale bar; 102. a chute; 103. a through groove; 104. a slider; 105. A support bar; 106. a pointer; 107. a cylinder; 2. a storage mechanism; 201. a soft cushion; 202. a storage bin; 203. a knob; 204. a hinge; 205. sealing the cover; 206. a through hole; 207. a first threaded hole; 208. a threaded rod; 209. a rubber pad; 210. a second threaded hole; 211. a screw; 3. a feeding mechanism; 301. a feed pipe; 302. a positioning claw; 303. dropping the bent pipe; 304. a receiving seat; 305. an electromagnetic coil; 306. a shock pad; 4. a handle; 5. a blanking port; 6. a rolling wheel; 7. a box body; 8. a glass cover; 9. a viewing port; 10. displaying the pressure; 11. a support plate; 12. a pressure sensor.

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. 1-6, the present invention provides a technical solution: the utility model provides a physical teaching presentation device and method, the power distribution box comprises a box body 7, the bottom surface fixed mounting of box 7 has rolling wheel 6, two symmetrical handles 4 of left surface fixedly connected with of box 7, viewing aperture 9 has been seted up in the front of box 7, the inner wall fixedly connected with glass cover 8 of viewing aperture 9, the front fixed mounting of box 7 has pressure display 10, the inner diapire fixedly connected with layer board 11 of box 7, the last fixed surface of layer board 11 is connected with pressure sensor 12, blanking mouth 5 has been seted up to the left surface of box 7, the outer fixed surface of box 7 installs receiving mechanism 2, the inside fixed mounting of box 7 has adjustment mechanism 1, the last fixed surface of box 7 installs feed mechanism 3.

Further, adjustment mechanism 1 includes scale strip 101, spout 102, lead to groove 103, slider 104, bracing piece 105, pointer 106 and cylinder 107, logical groove 103 has all been seted up to the left and right sides face of box 7, every is led to the inside of groove 103 and has all been placed and lead to the bracing piece 105 of groove 103 looks adaptation, the equal fixedly connected with two symmetrical pointers 106 of surface of every bracing piece 105, and the surface of pointer 106 contacts with the surface of box 7, two sets of symmetrical scale strip 101 have all been seted up to the left and right sides face of box 7, the equal fixed connection cylinder 107 of upper surface of every bracing piece 105, the stiff end of two cylinders 107 all with the interior roof fixed connection of box 7. The height adjustment is more rapid and accurate, and the error is reduced.

Further, the containing mechanism 2 comprises a soft pad 201, a containing bin 202, a knob 203, a hinge 204, a sealing cover 205, a through hole 206, a first threaded hole 207, a threaded rod 208, a rubber pad 209, a second threaded hole 210 and a screw 211, the outer surface of the box body 7 is fixedly connected with the containing bin 202, the containing bin 202 is positioned under the blanking port 5, the bottom surface of the containing bin 202 is provided with the first threaded hole 207, the internal thread of the first threaded hole 207 is connected with the threaded rod 208, the top end of the threaded rod 208 is fixedly connected with the rubber pad 209, the bottom end of the threaded rod 208 is fixedly connected with the knob 203, the outer surface of the containing bin 202 is fixedly hinged with the sealing cover 205 through the hinge 204, the outer surface of the sealing cover 205 is provided with the through hole 206, the upper surface of the containing bin 202 is provided with the second threaded hole 210, the internal thread of the second threaded hole 210 is connected, can be used for a long time, and avoids the expenditure of unnecessary teaching and testing tools.

further, feed mechanism 3 includes inlet pipe 301, positioning claw 302, whereabouts return bend 303, connect material seat 304, electromagnetic coil 305 and shock pad 306, electromagnetic coil 305 has been placed between two bracing pieces 105, and the side that two bracing pieces 105 are close to each other all is connected with the fixed surface of electromagnetic coil 305, the positioning claw 302 that the bottom surface fixedly connected with equidistance was arranged of electromagnetic coil 305, the last fixed surface of electromagnetic coil 305 is connected with and is the material seat 304 that connects of loudspeaker form, inlet pipe 301 has been placed to the inside of box 7, and inlet pipe 301 is located electromagnetic coil 305 directly over, the top of inlet pipe 301 runs through the interior roof of box 7 and extends to the top of box 7, can fix the iron ball fast, the suitability is stronger, teaching test speed has been improved, make the student can both move the hand operation.

Further, the soft pad 201 of inner wall fixedly connected with of collecting chamber 202 can cushion the iron ball of whereabouts, avoids the iron ball directly to strike collecting chamber 202's inner wall vibrations and noise to appear.

Further, the spout 102 has all been seted up to the inner wall of every logical groove 103, the equal fixedly connected with of surface of every bracing piece 105 two with the slider 104 of spout 102 looks adaptation, and slider 104 joint is in the inside of spout 102, makes the bracing piece 105 slide more convenient, avoids bracing piece 105 to appear the problem that the card went up when sliding.

further, the fixed intercommunication in bottom of inlet pipe 301 has whereabouts return bend 303, and whereabouts return bend 303 is located and connects material seat 304 directly over, can carry out speed reduction to the iron ball, avoids the direct whereabouts of iron ball to cause the damage to the device internals.

Furthermore, the inner wall of the receiving base 304 is fixedly connected with shock absorbing pads 306 which are arranged at equal intervals, and the shock absorbing pads 306 are made of butyl rubber, so that the service life of the material receiving base is long by utilizing the elasticity and the wear-resisting property of the butyl rubber.

Further, the physical teaching demonstration method comprises the following steps:

S1: when in a cleaning state: at first be linked together pressure sensor 12, pressure display 10, cylinder 107 and electromagnetic coil 305 with the power, electromagnetic coil 305 circular telegram starts and produces magnetic force, transfers the iron ball from inlet pipe 301 by the teacher, and the inside absorption that falls to material receiving seat 304 is in electromagnetic coil 305's inside through whereabouts return bend 303 slows down, can fix the iron ball fast, and the suitability is stronger, has improved teaching test speed, makes the student can both carry out the manual operation.

S2: reading and displaying states: the cylinder 107 is electrified to start to drive the supporting rod 105 and the electromagnetic coil 305 to move, the height of the iron ball is determined by observing the position of the pointer 106 on the scale bar 101 through a teacher, the teaching test is carried out, the height is adjusted more quickly and accurately, and the error is reduced.

S3: in the protection state: electromagnetic coil 305 outage magnetic force disappears, the iron ball falls and detects with pressure sensor 12 contact in from electromagnetic coil 305, show the digit by pressure display 10 and make the student watch, the iron ball drops to the inside of collecting chamber 202 from blanking mouth 5 departure from layer board 11 gliding, teaching experiment accomplishes the back, it is fixed with collecting chamber 202 and closing cap 205 with screw 211 to turn hinge 204, avoid the device iron ball to appear losing need purchase in idle period, can use for a long time, avoid unnecessary teaching experiment apparatus's spending.

The working principle is as follows: firstly, a pressure sensor 12, a pressure display 10, a cylinder 107 and an electromagnetic coil 305 are communicated with a power supply, the electromagnetic coil 305 is electrified and started to generate magnetic force, a teacher puts an iron ball down from a feeding pipe 301, the iron ball is decelerated through a falling elbow pipe 303 and falls into the receiving seat 304 to be adsorbed in the electromagnetic coil 305, the iron ball can be quickly fixed, the applicability is strong, the teaching test speed is improved, students can operate by hands, the cylinder 107 is electrified and started to drive a supporting rod 105 and the electromagnetic coil 305 to move, the height of the iron ball is determined by the teacher observing the position of a pointer 106 on a scale bar 101, the teaching test is carried out, the height is adjusted more quickly and accurately, the generation of errors is reduced, the electromagnetic coil 305 loses power magnetic force, the iron ball falls from the electromagnetic coil 305 to be in contact with the pressure sensor 12 for detection, and the students are watched by displaying numbers on the pressure display 10, iron ball from layer board 11 gliding from blanking mouth 5 fly out to the inside that accomodates the storehouse 202, teaching experiment completion back, turn hinge 204 and fix accomodate storehouse 202 and closing cap 205 with screw 211, avoid the device to appear losing need purchase in idle period iron ball, can use for a long time, avoid unnecessary teaching experiment apparatus's spending.

in the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "fixedly," "mounted," "connected," and "connected" are to be construed broadly, e.g., "mounted" may be fixedly connected, or detachably connected, or integrally connected; "connected" may be mechanically or electrically connected; "coupled" may be direct or indirect through an intermediary, and may be communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.