CN209333788U - A kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment - Google Patents

Abstract

The utility model relates to experiment appliance fields more particularly to a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment, the fixation device can effectively solve the problem that previous iron stand is not easy the problem of comparing observation experiment.Its structure includes station main body, and station main body includes the table top of rectangle, and the table top bottom four corners are fixed with longitudinal first leg respectively；The second longitudinal supporting leg is respectively welded in quadrangle on the upside of the table top, it is fixedly connected respectively with the bottom four corners of cover board on the upside of second supporting leg, second inboard leg is longitudinally equipped with a pair of of vertical plate, several cylindrical first struts and the second strut are respectively equipped in right side vertical plate and left side vertical plate, test tube fixation kit is equipped between first strut and the second strut, rubber slab is fixed between vertical plate below test tube fixation kit, rubber slab is equipped with several grooves with alcolhol burner cooperation.Its structure is simple, easy to use, is suitable for a variety of places.

Description

A kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment

Technical field

The utility model relates to experiment appliance field, especially a kind of multiple groups alcolhol burner and test tube based on senior middle school's experiment are solid Determine device.

Background technique

During teaching of senior high school, laboratory is very important practical operation course, not only can start to grasp with exercise student ' Make ability, additionally it is possible to student be assisted to understand theoretical knowledge.In laboratory, a kind of common experimental apparatus of iron stand, for solid It is fixed and support various instruments, generally it is usually used in the experimental implementations such as filtering, heating and titration, it is physics, uses in chemical experiment One of widest instrument, is often used cooperatively with alcolhol burner.Alcolhol burner is the heating tool using alcohol as fuel, usual situation Under, iron stand fixed object is heated in bottom by alcolhol burner, and observation chemical reaction can be played the role of.

Above-mentioned iron stand, when usual fixed object, are heated by single group alcolhol burner, can be played convenient for observation chemistry The effect of reaction.But single group alcolhol burner can only heat one group of test tube, cannot observe two or more sets test tubes simultaneously while add The changes in contrast of heat.Currently, without a kind of fixation device dedicated for multiple groups test tube Heating Experiment simultaneously, it is unfavorable for carrying out pair Compare observation experiment.

Utility model content

The technical assignment of the utility model is to provide a kind of to test based on senior middle school in view of the deficiency of the prior art Multiple groups alcolhol burner and test tube fixing device, the multiple groups fixation kit which is installed by station upper surface, Ke Yigu Determine multiple groups test tube and alcolhol burner, can effectively solve the problem that previous iron stand is not easy the problem of comparing observation experiment.

The technical scheme adopted by the utility model to solve the technical problem is as follows: the multiple groups alcohol that this kind is tested based on senior middle school Lamp and test tube fixing device, characterized in that its structure includes station main body, and station main body includes the table top of rectangle, described Table top bottom four corners be fixed with longitudinal first leg respectively；Longitudinal second is respectively welded in quadrangle on the upside of the table top Leg, the second supporting leg upside are fixedly connected with the bottom four corners of cover board respectively, and second inboard leg is longitudinally equipped with Several cylindrical first struts and the second strut, the two quantity one are respectively equipped in a pair of of vertical plate, right side vertical plate and left side vertical plate One is corresponding, and upper end is fixedly connected with cover board bottom surface respectively, is cased with the first lantern ring on the first strut, and the first collar side wall by Run through outside to inside and has screwed the first bolt；The second lantern ring, the second collar side wall ecto-entad are arranged on second strut The second bolt is screwed；The first crossbar of quadrangular shape, institute are fixed between first lantern ring and the second lantern ring respectively The first crossbar right part stated is welded and fixed with the first lantern ring left side, and left part is welded and fixed with the second lantern ring right side, the Be arranged with third lantern ring on one cross bar, third lantern ring in rectangular with first crossbar contoured fit, and third lantern ring upper side wall by Upper and lower through having screwed third bolt, third collar footprint is fixed with test tube fixation kit, below test tube fixation kit Rubber slab is fixed between vertical plate, rubber slab is equipped with several grooves with alcolhol burner cooperation, and groove is located at the fixed group of test tube The underface of part；

The left side vertical plate right side is fixed with lateral second crossbar, and second crossbar right part is fixed with and wine First rubber block of smart lamp body left side cooperation, ecto-entad is through having screwed the first screw rod, the first screw rod in right side vertical plate Inner end and the rotation of the second fixed block rivet, and the second fixed block left part is bonded with second with the cooperation of alcolhol burner body right side Rubber block；

Respectively in a rectangular parallelepiped shape, forward right side the second supporting leg leading flank first equipped with rectangle is fixed for second supporting leg Plate, the first fixed plate quadrangle passes through the 4th bolt respectively and is fixedly connected with the second supporting leg, and the first fixed plate outer surface It is fixed with light fixture, the light fixture includes the first coiled pipe, and it is solid that the first coiled pipe lower end is welded in first Fixed board outer surface, upper end are fixedly connected with the battery case bottom of rectangle, and the battery box outer surfac is equipped with lateral rectangle Switch, and lampshade is electrically connected on the upside of battery case, installation is equipped with light bulb inside lampshade；Second supporting leg leading flank of front left side is equipped with Second fixed plate of rectangle, the second fixed plate quadrangle pass through the 5th bolt respectively and are fixedly connected with the second supporting leg, and the Two fixed plate outer surfaces are equipped with the second coiled pipe, and the second coiled pipe lower end is welded in the second fixed plate outer surface, upper end It is welded and fixed with the bottom of stainless steel storage box, the storage box is square the structure of upper opening, and inside is divided by partition First matter storage lattice and the second matter storage lattice, the annular the of storage box upper side edge along the first magnetic stripe and transparent box cover bottom by annular Two magnetic stripes mutually adsorb, and side bonds are equipped with N-shaped handle on box cover.

Preferably, the test tube fixation kit includes cylindrical first fixed block for being welded in third collar footprint, the The welding of one fixed block bottom is equipped with flat cylindrical limited block, is equipped with the 4th lantern ring on the first fixed block on the upside of limited block, 4th lantern ring or so lateral surface is respectively welded equipped with third coiled pipe, welds on the upside of the third coiled pipe end and the 5th lantern ring Fixed, through the 6th bolt has been screwed, the 5th collar side wall ecto-entad runs through to have screwed the 4th lantern ring front side wall ecto-entad With the 7th bolt of test tube clamp cooperation.

Preferably, the test tube fixation kit includes the stainless steel sphere for being welded in third collar footprint, it is described not Third coiled pipe is respectively welded in rust steel ball body two sides, and the 5th lantern ring, the 5th collar side wall is welded and fixed in the third coiled pipe bottom Ecto-entad runs through the 7th bolt screwed with test tube clamp cooperation.

Preferably, the test tube fixation kit includes the upright bar for being welded in the rectangular-shape of third collar footprint, described Upright bar upper and lower ends portion extend transversely through and screwed the second screw rod, the second screw rod of top places from left to right, the of lower section Two screw rods place from right to left, and the part that is pierced by of the second bolt has screwed locking nut, and outer end is welded and fixed the respectively Five lantern rings, the 5th collar side wall ecto-entad run through the 7th bolt screwed with test tube clamp cooperation.

Preferably, the common connecting bottom board in middle position on the inside of the first leg, the front and back first at left and right sides of bottom plate Vertical side plate is respectively equipped between supporting leg, table top, side plate and bottom plate connect to form the cavity body structure that front and back is open, the chamber Body front and rear sides are respectively embedded into a pair of of drawer.

Preferably, first rubber block and the second rubber block bottom surface are fixed with intilted third rubber respectively Block.

Preferably, the number of recesses is three, in inside and outside evenly distributed in rubber slab upper surface.

Preferably, the quantity of first strut and the second strut is respectively three, and the first strut and the second strut are left Right one-to-one correspondence is respectively formed one group, is equipped with the test tube fixation kit cooperated with groove between every group of strut.

Preferably, in second fixed block embedded with cylindrical cavity, it is equipped with a through-hole on the right side of cavity, it is embedding in cavity There is vertical flat cylindrical limited block, limited block is fixedly connected with the left part of the first screw rod of right side, and the first screw rod is on right side Through hole is stretched out.

The utility model have it is following prominent the utility model has the advantages that

1, the second supporting leg bottom is welded in table top upper outside surfaces, and is connected on the upside of the second supporting leg with cover board, not only pacifies Dress securely, and cover board achieve the effect that it is dust-proof；First lantern ring of first rod outer surface is fixed by the first bolt, the first bolt Adjustable-tightness, the upper and lower position of the first lantern ring easy to remove, achievees the effect that facilitate operation；The second of second rod outer surface Lantern ring is fixed by the second bolt, the second bolt adjustable-tightness, the upper and lower position of the second lantern ring easy to remove, and the first lantern ring It is connect with the second lantern ring by first crossbar, the tetragonous rod structure of first crossbar can prevent test tube fixation kit from rotating, and have very Good utilization and extention value.

, vertical plate can reduce danger caused by test tube is burst, and the groove of rubber slab upper surface and alcohol lamp bottle bottom size phase Matching, plays preliminary fixed function in bottom conducive to alcohol, the first rubber block and the second rubber block can be in two sides to alcohol Lamp body plays fixed function, prevents alcolhol burner from skewing；It can be by groove after alcolhol burner, by screwing right side when fixed Screw rod, so that the second rubber block compresses alcolhol burner, to play fixed function.

, first leg support rectangular mesa, the first fixed plate is bolted by the 4th, is not only convenient for installing, moreover it is possible to reach To stronger effect；First coiled pipe of light fixture is convenient for the angle of regulating lampshade, achieve the effect that it is easy to use, and the The battery case of one coiled pipe upper end can provide electric energy to light bulb, and the switch of battery box outer surfac is convenient for the work of control light fixture It opens and closes；Second fixed plate is bolted by the 5th, achievees the effect that firmly install；Second coiled pipe is stored convenient for adjusting The position of box, and storage box is divided into the first matter storage lattice and the second matter storage lattice by partition, the first matter storage lattice is convenient for storage tweezers etc. Operational instrument, the second matter storage lattice connect storage box and box cover convenient for tools such as storage cotton balls, by the first magnetic stripe and the second magnetic stripe, Achieve the effect that seamless connection, prevent dust from entering, transparent box cover is convenient for observing the article inside storage box, reaches using just Prompt effect；N-shaped handle on the upside of box cover achievees the effect that facilitate operation convenient for box cover of taking.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the right side structural representation of Fig. 1；

Fig. 3 is the composite construction schematic diagram of the first rubber block and the cooperation of the second rubber block and alcolhol burner in Fig. 1；

Fig. 4 is the schematic cross-sectional view of the second fixed block and the cooperation of the first screw rod in Fig. 1；

Fig. 5 is the implementation structural schematic diagram of the utility model another kind test tube fixation kit；

Fig. 6 is the implementation structural schematic diagram of the utility model another kind test tube fixation kit；

Fig. 7 is the enlarged structure schematic diagram in Fig. 1 at A；

Fig. 8 is the enlarged structure schematic diagram in Fig. 1 at B；

Fig. 9 is the enlarged structure schematic diagram in Fig. 5 at A1；

Figure 10 is the enlarged structure schematic diagram in Fig. 6 at A2.

Description of symbols: 1, station main body；11, table top；12, drawer；13, first leg；14, bottom plate；15, side Plate；2, the second supporting leg；21, the first fixed plate；211, the 4th bolt；22, light fixture；221, the first coiled pipe；222, battery case； 223, it switchs；224, lampshade；23, cover board；24, the first strut；25, the first lantern ring；26, the first bolt；27, the second strut；28, Second lantern ring；29, the second bolt；3, the second fixed plate；31, the 5th bolt；32, the second coiled pipe；33, storage box；331, first Matter storage lattice；332, partition；333, the second matter storage lattice；334, the first magnetic stripe；335, the second magnetic stripe；336, box cover；337, handle；4, Vertical plate；41, the first screw rod；411, limited block；5, test tube fixation kit；51, third bolt；52, third lantern ring；53, first is horizontal Bar；54, the 4th lantern ring；540, the 6th bolt；541, stainless steel sphere；542, the second screw rod；543, locking nut；55, first Fixed block；551, limited block；56, third coiled pipe；561, upright bar；57, the 5th lantern ring；58, the 7th bolt；59, test tube clamp；6, Two cross bars；61, the first rubber block；62, the second fixed block；621, cavity；622, through-hole；63, the second rubber block；64, third rubber Blob of viscose；7, rubber slab；71, groove；8, alcolhol burner.

, specific embodiment

5, the embodiments of the present invention are illustrated with reference to the accompanying drawing, embodiment is not constituted to the utility model Limitation:

6, embodiment 1

As shown in Figures 1 to 10, the multiple groups alcolhol burner and test tube fixing device, structure that this kind is tested based on senior middle school include Station main body 1, station main body 1 include the table top 11(stainless steel of rectangle), 11 bottom four corners of table top are fixed respectively Equipped with longitudinal first leg 13(aluminium alloy)；The second longitudinal supporting leg 2(stainless steel is respectively welded in quadrangle on the upside of the table top), Second supporting leg, 2 upside respectively with cover board 23(stainless steel) bottom four corners be fixedly connected, 2 inside of the second supporting leg It is longitudinal to be equipped with a pair of vertical plate 4(stainless steel), several cylindrical first strut, 24 Hes are respectively equipped in right side vertical plate and left side vertical plate Second strut 27(stainless steel), the two quantity corresponds, and upper end is fixedly connected with 23 bottom surface of cover board respectively, the first strut The first lantern ring 25(stainless steel is cased on 24), and 25 side wall ecto-entad of the first lantern ring is through having screwed the first bolt 26.Second The second lantern ring 28 is arranged on strut 27, the 28 side wall ecto-entad of the second lantern ring has screwed the second bolt 29.Described The first crossbar 53(stainless steel of quadrangular shape is fixed between first lantern ring 25 and the second lantern ring 28 respectively), described first 53 right part of cross bar is welded and fixed with 25 left side of the first lantern ring, and left part is welded and fixed with 28 right side of the second lantern ring, and first Third lantern ring 52(stainless steel is arranged on cross bar 53), third lantern ring 52 is in rectangular with 53 contoured fit of first crossbar, and the Three lantern rings, 52 upper side wall, which from top to bottom runs through, has screwed third bolt 51, and 52 bottom of third lantern ring is fixed with test tube fixation kit 5(its structure explained later), the bottom rubber slab 7(is fixed between the vertical plate 4 of 5 lower section of test tube fixation kit and table top is viscous Connect), rubber slab 7 is equipped with several grooves 71 cooperated with alcolhol burner 8, and groove 71 is located at the underface of test tube fixation kit 5.Make Used time, the second supporting leg bottom is welded in table top upper outside surfaces, and is connected on the upside of the second supporting leg with cover board, not only installation jail Gu and cover board achieve the effect that it is dust-proof；First lantern ring of first rod outer surface is fixed by the first bolt, and the first bolt is adjustable Save elastic, the upper and lower position of the first lantern ring easy to remove achievees the effect that facilitate operation；Second lantern ring of second rod outer surface It is fixed by the second bolt, the second bolt adjustable-tightness, the upper and lower position of the second lantern ring easy to remove, and the first lantern ring and Two lantern rings are connected by first crossbar, and the tetragonous rod structure of first crossbar can prevent test tube fixation kit from rotating.

In above-described embodiment, specifically, as shown in Figure 1, Figure 3,4 right side of left side vertical plate is fixed with lateral Second crossbar 6(stainless steel), 6 right part of second crossbar is fixed with the first rubber block with the cooperation of 8 body left side of alcolhol burner 61(inner surface is in cambered surface), ecto-entad is through having screwed the first screw rod 41 in right side vertical plate 4,41 inner end of the first screw rod and the The rotation riveting of two fixed blocks 62,62 left part of the second fixed block are bonded with the second rubber with the cooperation of 8 body right side of alcolhol burner Block 63(inner surface is in cambered surface).In use, vertical plate reduces danger caused by test tube is burst, and the groove and wine of rubber slab upper surface Smart lamp bottom of bottle size matches, and plays preliminary fixed function in bottom conducive to alcohol, the first rubber block and the second rubber block can To play fixed function to alcolhol burner body in two sides, prevent alcolhol burner from skewing；When fixed can by groove after alcolhol burner, By screwing the screw rod on right side, so that the second rubber block compresses alcolhol burner, to play fixed function.

In above-described embodiment, specifically, as shown in Figure 1 and Figure 2, second supporting leg 2 is distinguished in a rectangular parallelepiped shape, before right 2 leading flank of the second supporting leg of side is equipped with the first fixed plate 21(stainless steel of rectangle), 21 4 jiaos of first fixed plate is led to respectively It crosses the 4th bolt 211 to be fixedly connected with the second supporting leg 2, and 21 outer surface of the first fixed plate is fixed with light fixture 22, it is described Light fixture 22 include the first coiled pipe 221,221 lower end of the first coiled pipe is welded in 21 outer surface of the first fixed plate, Upper end is fixedly connected with 222 bottom of battery case of rectangle, and 222 outer surface of battery case is equipped with the switch of lateral rectangle 223, and lampshade 224 is electrically connected on the upside of battery case 222, installation is equipped with light bulb (well-known technique is not shown in figure inside lampshade 224 Out).2 leading flank of the second supporting leg of front left side is equipped with the second fixed plate 3(stainless steel of rectangle), second fixed plate 3 four Angle passes through the 5th bolt 31 respectively and is fixedly connected with the second supporting leg 2, and 3 outer surface of the second fixed plate is equipped with the second coiled pipe 32, institute 32 lower end of the second coiled pipe stated is welded in 3 outer surface of the second fixed plate, the bottom welding of upper end and stainless steel storage box 33 Fixed, the storage box 33 is square the structure of upper opening, and inside is by partition 332(stainless steel) it is divided into the first matter storage lattice 331 and second matter storage lattice 333,33 upper side edge of storage box is along the first magnetic stripe 334 and transparent box cover 336(plastics by annular) bottom 335 phase of the second magnetic stripe of annular in portion is adsorbed, and side bonds are equipped with N-shaped handle 337(plastics on box cover 336).In use, first Leg supports rectangular mesa, and the first fixed plate is bolted by the 4th, is not only convenient for installing, moreover it is possible to reach stronger effect Fruit；First coiled pipe of light fixture is convenient for the angle of regulating lampshade, achievees the effect that easy to use, and the first coiled pipe upper end Battery case can provide electric energy to light bulb, and the switch of battery box outer surfac opens and closes convenient for the work of control light fixture；The Two fixed plates are bolted by the 5th, achieve the effect that firmly install；Second coiled pipe is received convenient for adjusting the position of storage box Case is divided into the first matter storage lattice and the second matter storage lattice by partition, and the first matter storage lattice is convenient for operational instrument such as storage tweezers, and second Matter storage lattice connects storage box and box cover convenient for tools such as storage cotton balls, by the first magnetic stripe and the second magnetic stripe, reaches seamless connection Effect, prevent dust from entering, transparent box cover is convenient for observing article inside storage box, achievees the effect that easy to use；Box The N-shaped handle of side is covered convenient for box cover of taking, achievees the effect that facilitate operation.

In above-described embodiment, more specifically, as shown in Figure 1, Figure 7 shows, the test tube fixation kit 5 includes being welded in the The cylindrical first fixed block 55(stainless steel of three lantern rings, 52 bottom), the welding of 55 bottom of the first fixed block is equipped with flat cylindrical limit Position block 551 is equipped with the 4th lantern ring 54,54 or so lateral surface of the 4th lantern ring point on first fixed block 55 of the upside of limited block 551 It Han Jie be equipped with third coiled pipe 56, be welded and fixed on the upside of 56 end of third coiled pipe and the 5th lantern ring 57, the 4th lantern ring 54 front side wall ecto-entads are through having screwed the 6th bolt 540, and 57 side wall ecto-entad of the 5th lantern ring is through having screwed and test tube 7th bolt 58 of 59 cooperation of folder.In use, the first fixed block is rotatably assorted with the 4th lantern ring, third coiled pipe is adjusted convenient for rotation Angle, and the 5th lantern ring of third coiled pipe end is convenient for fixed test tube clamp, and the 7th bolt reaches convenient for adjusting the angle of test tube clamp To the effect for facilitating operation, limited block prevents the 4th lantern ring from slipping, plays the role of limit.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the 13 inside middle position of first leg is total With connecting bottom board 14(stainless steel), vertical side plate 15 is respectively equipped between the front and back first leg 13 of the left and right sides of bottom plate 14 (Fig. 2, stainless steel), table top 11, side plate 15 and the connection of bottom plate 14 form the cavity body structure that front and back is open, the cavity front and back two Side is respectively embedded into a pair of of its structure of drawer 12(and is installed as well-known technique).In use, the drawer on the upside of backplanes support, drawer can To store the tools such as test tube or beaker, achieve the effect that storage tool, drawer is not only convenient for storing, when also operator being facilitated to operate Article needed for being taken out out of drawer.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first rubber block 61 and the second rubber block 63 bottom surfaces are fixed with intilted third rubber block 64 respectively.In use, third rubber block can be in side to alcolhol burner Play the effect being auxiliarily fixed.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2,71 quantity of groove is three, in inside and outside equal It is even to be arranged in 7 upper surface of rubber slab.In use, three grooves can be lighted simultaneously and be tested convenient for being put into three alcolhol burners Operation is convenient for the comparison of multiple groups experiment, achievees the effect that facilitate observation.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first strut 24 and the second strut 72 Quantity is respectively three, and the first strut 24 and the second strut 27 or so correspond, and is respectively formed one group, sets between every group of strut There is the test tube fixation kit 5 cooperated with groove 71.In use, test tube fixation kit and the alcolhol burner of lower section form one group of tester Tool, alcolhol burner is gripped by the rubber block of two sides, prevents from skewing and slide, and test tube fixation kit can be with up and down adjustment position It sets, improves the convenience used.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the second fixed block 62(stainless steel) in it is embedding There is cylindrical cavity 621, a through-hole 622 is equipped on the right side of cavity 621, vertical flat cylindrical limit is embedded in cavity 621 Block 411(stainless steel), limited block 411 is fixed (welding) with the left part of the first screw rod of right side 41 and is connect, and the first screw rod 41 is on the right side It is stretched out at side through hole 622.In use, the cavity in limited block and the second fixed block cooperates, the effect of rotation riveting is formed, so that When screwing the first screw rod to the left, so that the presentation of the second rubber block is moved to the left and non-rotary effect.

Embodiment 2

As shown in Figures 1 to 10, the multiple groups alcolhol burner and test tube fixing device, structure that this kind is tested based on senior middle school include Station main body 1, station main body 1 include the table top 11(stainless steel of rectangle), 11 bottom four corners of table top are fixed respectively Equipped with longitudinal first leg 13(aluminium alloy)；The second longitudinal supporting leg 2(stainless steel is respectively welded in quadrangle on the upside of the table top), Second supporting leg, 2 upside respectively with cover board 23(stainless steel) bottom four corners be fixedly connected, 2 inside of the second supporting leg It is longitudinal to be equipped with a pair of vertical plate 4(stainless steel), several cylindrical first strut, 24 Hes are respectively equipped in right side vertical plate and left side vertical plate Second strut 27(stainless steel), the two quantity corresponds, and upper end is fixedly connected with 23 bottom surface of cover board respectively, the first strut The first lantern ring 25(stainless steel is cased on 24), and 25 side wall ecto-entad of the first lantern ring is through having screwed the first bolt 26.Second The second lantern ring 28 is arranged on strut 27, the 28 side wall ecto-entad of the second lantern ring has screwed the second bolt 29.Described The first crossbar 53(stainless steel of quadrangular shape is fixed between first lantern ring 25 and the second lantern ring 28 respectively), described first 53 right part of cross bar is welded and fixed with 25 left side of the first lantern ring, and left part is welded and fixed with 28 right side of the second lantern ring, and first Third lantern ring 52(stainless steel is arranged on cross bar 53), third lantern ring 52 is in rectangular with 53 contoured fit of first crossbar, and the Three lantern rings, 52 upper side wall, which from top to bottom runs through, has screwed third bolt 51, and 52 bottom of third lantern ring is fixed with test tube fixation kit 5(its structure explained later), the bottom rubber slab 7(is fixed between the vertical plate 4 of 5 lower section of test tube fixation kit and table top is viscous Connect), rubber slab 7 is equipped with several grooves 71 cooperated with alcolhol burner 8, and groove 71 is located at the underface of test tube fixation kit 5.Make Used time, the second supporting leg bottom is welded in table top upper outside surfaces, and is connected on the upside of the second supporting leg with cover board, not only installation jail Gu and cover board achieve the effect that it is dust-proof；First lantern ring of first rod outer surface is fixed by the first bolt, and the first bolt is adjustable Save elastic, the upper and lower position of the first lantern ring easy to remove achievees the effect that facilitate operation；Second lantern ring of second rod outer surface It is fixed by the second bolt, the second bolt adjustable-tightness, the upper and lower position of the second lantern ring easy to remove, and the first lantern ring and Two lantern rings are connected by first crossbar, and the tetragonous rod structure of first crossbar can prevent test tube fixation kit from rotating.

In above-described embodiment, specifically, as shown in Figure 1, Figure 3,4 right side of left side vertical plate is fixed with lateral Second crossbar 6(stainless steel), 6 right part of second crossbar is fixed with the first rubber block with the cooperation of 8 body left side of alcolhol burner 61(inner surface is in cambered surface), ecto-entad is through having screwed the first screw rod 41 in right side vertical plate 4,41 inner end of the first screw rod and the The rotation riveting of two fixed blocks 62,62 left part of the second fixed block are bonded with the second rubber with the cooperation of 8 body right side of alcolhol burner Block 63(inner surface is in cambered surface).In use, vertical plate reduces danger caused by test tube is burst, and the groove and wine of rubber slab upper surface Smart lamp bottom of bottle size matches, and plays preliminary fixed function in bottom conducive to alcohol, the first rubber block and the second rubber block can To play fixed function to alcolhol burner body in two sides, prevent alcolhol burner from skewing；When fixed can by groove after alcolhol burner, By screwing the screw rod on right side, so that the second rubber block compresses alcolhol burner, to play fixed function.

In above-described embodiment, specifically, as shown in Figure 1 and Figure 2, second supporting leg 2 is distinguished in a rectangular parallelepiped shape, before right 2 leading flank of the second supporting leg of side is equipped with the first fixed plate 21(stainless steel of rectangle), 21 4 jiaos of first fixed plate is led to respectively It crosses the 4th bolt 211 to be fixedly connected with the second supporting leg 2, and 21 outer surface of the first fixed plate is fixed with light fixture 22, it is described Light fixture 22 include the first coiled pipe 221,221 lower end of the first coiled pipe is welded in 21 outer surface of the first fixed plate, Upper end is fixedly connected with 222 bottom of battery case of rectangle, and 222 outer surface of battery case is equipped with the switch of lateral rectangle 223, and lampshade 224 is electrically connected on the upside of battery case 222, installation is equipped with light bulb (well-known technique is not shown in figure inside lampshade 224 Out).2 leading flank of the second supporting leg of front left side is equipped with the second fixed plate 3(stainless steel of rectangle), second fixed plate 3 four Angle passes through the 5th bolt 31 respectively and is fixedly connected with the second supporting leg 2, and 3 outer surface of the second fixed plate is equipped with the second coiled pipe 32, institute 32 lower end of the second coiled pipe stated is welded in 3 outer surface of the second fixed plate, the bottom welding of upper end and stainless steel storage box 33 Fixed, the storage box 33 is square the structure of upper opening, and inside is by partition 332(stainless steel) it is divided into the first matter storage lattice 331 and second matter storage lattice 333,33 upper side edge of storage box is along the first magnetic stripe 334 and transparent box cover 336(plastics by annular) bottom 335 phase of the second magnetic stripe of annular in portion is adsorbed, and side bonds are equipped with N-shaped handle 337(plastics on box cover 336).In use, first Leg supports rectangular mesa, and the first fixed plate is bolted by the 4th, is not only convenient for installing, moreover it is possible to reach stronger effect Fruit；First coiled pipe of light fixture is convenient for the angle of regulating lampshade, achievees the effect that easy to use, and the first coiled pipe upper end Battery case can provide electric energy to light bulb, and the switch of battery box outer surfac opens and closes convenient for the work of control light fixture；The Two fixed plates are bolted by the 5th, achieve the effect that firmly install；Second coiled pipe is received convenient for adjusting the position of storage box Case is divided into the first matter storage lattice and the second matter storage lattice by partition, and the first matter storage lattice is convenient for operational instrument such as storage tweezers, and second Matter storage lattice connects storage box and box cover convenient for tools such as storage cotton balls, by the first magnetic stripe and the second magnetic stripe, reaches seamless connection Effect, prevent dust from entering, transparent box cover is convenient for observing article inside storage box, achievees the effect that easy to use；Box The N-shaped handle of side is covered convenient for box cover of taking, achievees the effect that facilitate operation.

In above-described embodiment, more specifically, as shown in Figure 5, Figure 9, the test tube fixation kit 5 includes being welded in the The stainless steel sphere 541 of three lantern rings, 52 bottom, third coiled pipe 56 is respectively welded in 541 two sides of stainless steel sphere, described The 5th lantern ring 57 is welded and fixed in 56 bottom of third coiled pipe, and 57 side wall ecto-entad of the 5th lantern ring runs through to have screwed matches with test tube clamp 59 The 7th bolt 58 closed.In use, the third coiled pipe of the fixed two sides of stainless steel sphere, convenient for adjusting the direction and position of test tube, The angle of test tube clamp is adjusted by the 5th lantern ring and is fixed by the 7th bolt, is achieved the effect that easy to use.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the 13 inside middle position of first leg is total With connecting bottom board 14(stainless steel), vertical side plate 15 is respectively equipped between the front and back first leg 13 of the left and right sides of bottom plate 14 (Fig. 2, stainless steel), table top 11, side plate 15 and the connection of bottom plate 14 form the cavity body structure that front and back is open, the cavity front and back two Side is respectively embedded into a pair of of its structure of drawer 12(and is installed as well-known technique).In use, the drawer on the upside of backplanes support, drawer can To store the tools such as test tube or beaker, achieve the effect that storage tool, drawer is not only convenient for storing, when also operator being facilitated to operate Article needed for being taken out out of drawer.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first rubber block 61 and the second rubber block 63 bottom surfaces are fixed with intilted third rubber block 64 respectively.In use, third rubber block can be in side to alcolhol burner Play the effect being auxiliarily fixed.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2,71 quantity of groove is three, in inside and outside equal It is even to be arranged in 7 upper surface of rubber slab.In use, three grooves can be lighted simultaneously and be tested convenient for being put into three alcolhol burners Operation is convenient for the comparison of multiple groups experiment, achievees the effect that facilitate observation.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first strut 24 and the second strut 72 Quantity is respectively three, and the first strut 24 and the second strut 27 or so correspond, and is respectively formed one group, sets between every group of strut There is the test tube fixation kit 5 cooperated with groove 71.In use, test tube fixation kit and the alcolhol burner of lower section form one group of tester Tool, alcolhol burner is gripped by the rubber block of two sides, prevents from skewing and slide, and test tube fixation kit can be with up and down adjustment position It sets, improves the convenience used.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the second fixed block 62(stainless steel) in it is embedding There is cylindrical cavity 621, a through-hole 622 is equipped on the right side of cavity 621, vertical flat cylindrical limit is embedded in cavity 621 Block 411(stainless steel), limited block 411 is fixed (welding) with the left part of the first screw rod of right side 41 and is connect, and the first screw rod 41 is on the right side It is stretched out at side through hole 622.In use, the cavity in limited block and the second fixed block cooperates, the effect of rotation riveting is formed, so that When screwing the first screw rod to the left, so that the presentation of the second rubber block is moved to the left and non-rotary effect.

Embodiment 3

As shown in Figures 1 to 10, the multiple groups alcolhol burner and test tube fixing device, structure that this kind is tested based on senior middle school include Station main body 1, station main body 1 include the table top 11(stainless steel of rectangle), 11 bottom four corners of table top are fixed respectively Equipped with longitudinal first leg 13(aluminium alloy)；The second longitudinal supporting leg 2(stainless steel is respectively welded in quadrangle on the upside of the table top), Second supporting leg, 2 upside respectively with cover board 23(stainless steel) bottom four corners be fixedly connected, 2 inside of the second supporting leg It is longitudinal to be equipped with a pair of vertical plate 4(stainless steel), several cylindrical first strut, 24 Hes are respectively equipped in right side vertical plate and left side vertical plate Second strut 27(stainless steel), the two quantity corresponds, and upper end is fixedly connected with 23 bottom surface of cover board respectively, the first strut The first lantern ring 25(stainless steel is cased on 24), and 25 side wall ecto-entad of the first lantern ring is through having screwed the first bolt 26.Second The second lantern ring 28 is arranged on strut 27, the 28 side wall ecto-entad of the second lantern ring has screwed the second bolt 29.Described The first crossbar 53(stainless steel of quadrangular shape is fixed between first lantern ring 25 and the second lantern ring 28 respectively), described first 53 right part of cross bar is welded and fixed with 25 left side of the first lantern ring, and left part is welded and fixed with 28 right side of the second lantern ring, and first Third lantern ring 52(stainless steel is arranged on cross bar 53), third lantern ring 52 is in rectangular with 53 contoured fit of first crossbar, and the Three lantern rings, 52 upper side wall, which from top to bottom runs through, has screwed third bolt 51, and 52 bottom of third lantern ring is fixed with test tube fixation kit 5(its structure explained later), the bottom rubber slab 7(is fixed between the vertical plate 4 of 5 lower section of test tube fixation kit and table top is viscous Connect), rubber slab 7 is equipped with several grooves 71 cooperated with alcolhol burner 8, and groove 71 is located at the underface of test tube fixation kit 5.Make Used time, the second supporting leg bottom is welded in table top upper outside surfaces, and is connected on the upside of the second supporting leg with cover board, not only installation jail Gu and cover board achieve the effect that it is dust-proof；First lantern ring of first rod outer surface is fixed by the first bolt, and the first bolt is adjustable Save elastic, the upper and lower position of the first lantern ring easy to remove achievees the effect that facilitate operation；Second lantern ring of second rod outer surface It is fixed by the second bolt, the second bolt adjustable-tightness, the upper and lower position of the second lantern ring easy to remove, and the first lantern ring and Two lantern rings are connected by first crossbar, and the tetragonous rod structure of first crossbar can prevent test tube fixation kit from rotating.

In above-described embodiment, specifically, as shown in Figure 1, Figure 3,4 right side of left side vertical plate is fixed with lateral Second crossbar 6(stainless steel), 6 right part of second crossbar is fixed with the first rubber block with the cooperation of 8 body left side of alcolhol burner 61(inner surface is in cambered surface), ecto-entad is through having screwed the first screw rod 41 in right side vertical plate 4,41 inner end of the first screw rod and the The rotation riveting of two fixed blocks 62,62 left part of the second fixed block are bonded with the second rubber with the cooperation of 8 body right side of alcolhol burner Block 63(inner surface is in cambered surface).In use, vertical plate reduces danger caused by test tube is burst, and the groove and wine of rubber slab upper surface Smart lamp bottom of bottle size matches, and plays preliminary fixed function in bottom conducive to alcohol, the first rubber block and the second rubber block can To play fixed function to alcolhol burner body in two sides, prevent alcolhol burner from skewing；When fixed can by groove after alcolhol burner, By screwing the screw rod on right side, so that the second rubber block compresses alcolhol burner, to play fixed function.

In above-described embodiment, specifically, as shown in Figure 1 and Figure 2, second supporting leg 2 is distinguished in a rectangular parallelepiped shape, before right 2 leading flank of the second supporting leg of side is equipped with the first fixed plate 21(stainless steel of rectangle), 21 4 jiaos of first fixed plate is led to respectively It crosses the 4th bolt 211 to be fixedly connected with the second supporting leg 2, and 21 outer surface of the first fixed plate is fixed with light fixture 22, it is described Light fixture 22 include the first coiled pipe 221,221 lower end of the first coiled pipe is welded in 21 outer surface of the first fixed plate, Upper end is fixedly connected with 222 bottom of battery case of rectangle, and 222 outer surface of battery case is equipped with the switch of lateral rectangle 223, and lampshade 224 is electrically connected on the upside of battery case 222, installation is equipped with light bulb (well-known technique is not shown in figure inside lampshade 224 Out).2 leading flank of the second supporting leg of front left side is equipped with the second fixed plate 3(stainless steel of rectangle), second fixed plate 3 four Angle passes through the 5th bolt 31 respectively and is fixedly connected with the second supporting leg 2, and 3 outer surface of the second fixed plate is equipped with the second coiled pipe 32, institute 32 lower end of the second coiled pipe stated is welded in 3 outer surface of the second fixed plate, the bottom welding of upper end and stainless steel storage box 33 Fixed, the storage box 33 is square the structure of upper opening, and inside is by partition 332(stainless steel) it is divided into the first matter storage lattice 331 and second matter storage lattice 333,33 upper side edge of storage box is along the first magnetic stripe 334 and transparent box cover 336(plastics by annular) bottom 335 phase of the second magnetic stripe of annular in portion is adsorbed, and side bonds are equipped with N-shaped handle 337(plastics on box cover 336).In use, first Leg supports rectangular mesa, and the first fixed plate is bolted by the 4th, is not only convenient for installing, moreover it is possible to reach stronger effect Fruit；First coiled pipe of light fixture is convenient for the angle of regulating lampshade, achievees the effect that easy to use, and the first coiled pipe upper end Battery case can provide electric energy to light bulb, and the switch of battery box outer surfac opens and closes convenient for the work of control light fixture；The Two fixed plates are bolted by the 5th, achieve the effect that firmly install；Second coiled pipe is received convenient for adjusting the position of storage box Case is divided into the first matter storage lattice and the second matter storage lattice by partition, and the first matter storage lattice is convenient for operational instrument such as storage tweezers, and second Matter storage lattice connects storage box and box cover convenient for tools such as storage cotton balls, by the first magnetic stripe and the second magnetic stripe, reaches seamless connection Effect, prevent dust from entering, transparent box cover is convenient for observing article inside storage box, achievees the effect that easy to use；Box The N-shaped handle of side is covered convenient for box cover of taking, achievees the effect that facilitate operation.

In above-described embodiment, more specifically, as shown in Fig. 6, Figure 10, the test tube fixation kit 5 includes being welded in The upright bar 561 of the rectangular-shape of 52 bottom of third lantern ring, the 561 upper and lower ends portion of upright bar, which extends transversely through, has screwed second Second screw rod 542 of screw rod 542, top places from left to right, and the second screw rod 542 of lower section places from right to left, the second bolt 542 part that is pierced by has screwed locking nut 543, and that (welding) the 5th lantern ring 57(is welded and fixed respectively is stainless for outer end Steel), 57 side wall ecto-entad of the 5th lantern ring runs through the 7th bolt 58 for screwing and cooperating with test tube clamp 59.In use, the second spiral shell Bar runs through upright bar, adjustable left-right position, and is fixed by locking nut, achievees the effect that limit is fixed, passes through the 5th set The cooperation of ring and the 7th bolt can play fixed function to test tube clamp, and rotate the adjustable angle of test tube clamp, and pass through The fixed limit of 7th bolt, achievees the effect that convenient to use.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the 13 inside middle position of first leg is total With connecting bottom board 14(stainless steel), vertical side plate 15 is respectively equipped between the front and back first leg 13 of the left and right sides of bottom plate 14 (Fig. 2, stainless steel), table top 11, side plate 15 and the connection of bottom plate 14 form the cavity body structure that front and back is open, the cavity front and back two Side is respectively embedded into a pair of of its structure of drawer 12(and is installed as well-known technique).In use, the drawer on the upside of backplanes support, drawer can To store the tools such as test tube or beaker, achieve the effect that storage tool, drawer is not only convenient for storing, when also operator being facilitated to operate Article needed for being taken out out of drawer.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first rubber block 61 and the second rubber block 63 bottom surfaces are fixed with intilted third rubber block 64 respectively.In use, third rubber block can be in side to alcolhol burner Play the effect being auxiliarily fixed.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2,71 quantity of groove is three, in inside and outside equal It is even to be arranged in 7 upper surface of rubber slab.In use, three grooves can be lighted simultaneously and be tested convenient for being put into three alcolhol burners Operation is convenient for the comparison of multiple groups experiment, achievees the effect that facilitate observation.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, first strut 24 and the second strut 72 Quantity is respectively three, and the first strut 24 and the second strut 27 or so correspond, and is respectively formed one group, sets between every group of strut There is the test tube fixation kit 5 cooperated with groove 71.In use, test tube fixation kit and the alcolhol burner of lower section form one group of tester Tool, alcolhol burner is gripped by the rubber block of two sides, prevents from skewing and slide, and test tube fixation kit can be with up and down adjustment position It sets, improves the convenience used.

In above-described embodiment, more specifically, as shown in Figure 1 and Figure 2, the second fixed block 62(stainless steel) in it is embedding There is cylindrical cavity 621, a through-hole 622 is equipped on the right side of cavity 621, vertical flat cylindrical limit is embedded in cavity 621 Block 411(stainless steel), limited block 411 is fixed (welding) with the left part of the first screw rod of right side 41 and is connect, and the first screw rod 41 is on the right side It is stretched out at side through hole 622.In use, the cavity in limited block and the second fixed block cooperates, the effect of rotation riveting is formed, so that When screwing the first screw rod to the left, so that the presentation of the second rubber block is moved to the left and non-rotary effect.

The above, the only preferred embodiment of the utility model, not do limit in any form to the utility model System.Anyone skilled in the art, in the case where not departing from technical solutions of the utility model ambit, all using above-mentioned The technology contents make many possible changes and modifications to technical solutions of the utility model, or be revised as equivalent variations etc. Imitate embodiment.Therefore, all contents without departing from technical solutions of the utility model, the technology according to the utility model is to the above reality Any change modification, equivalent variations and modification that example is made are applied, the protection scope of the technical program is belonged to.

Claims (9)

1. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment, characterized in that its structure includes station master Body, station main body include the table top of rectangle, and the table top bottom four corners are fixed with longitudinal first leg respectively；It is described The second longitudinal supporting leg is respectively welded in quadrangle on the upside of table top, fixes respectively with the bottom four corners of cover board on the upside of second supporting leg Connection, second inboard leg are longitudinally equipped with a pair of of vertical plate, several cylindricalitys are respectively equipped in right side vertical plate and left side vertical plate The first strut and the second strut, the two quantity corresponds, and upper end is fixedly connected with cover board bottom surface respectively, the first strut On be cased with the first lantern ring, and the first collar side wall ecto-entad is through having screwed the first bolt；Second is arranged on second strut Lantern ring, the second collar side wall ecto-entad have screwed the second bolt；Divide between first lantern ring and the second lantern ring It is not fixed with the first crossbar of quadrangular shape, the first crossbar right part is welded and fixed with the first lantern ring left side, left End is welded and fixed with the second lantern ring right side, and third lantern ring is arranged in first crossbar, and third lantern ring is in and first crossbar wheel Exterior feature cooperation it is rectangular, and third lantern ring upper side wall from top to bottom runs through and has screwed third bolt, and third collar footprint is fixed with Test tube fixation kit is fixed with rubber slab between the vertical plate below test tube fixation kit, and rubber slab is equipped with several and alcohol The groove of lamp cooperation, groove are located at the underface of test tube fixation kit；

The left side vertical plate right side is fixed with lateral second crossbar, and second crossbar right part is fixed with and alcolhol burner First rubber block of body left side cooperation, ecto-entad is through having screwed the first screw rod, the first screw rod inner end in right side vertical plate Portion and the rotation of the second fixed block rivet, and the second fixed block left part is bonded with the second rubber with the cooperation of alcolhol burner body right side Block；

Respectively in a rectangular parallelepiped shape, forward right side the second supporting leg leading flank is equipped with the first fixed plate of rectangle, institute to second supporting leg The the first fixed plate quadrangle stated passes through the 4th bolt respectively and is fixedly connected with the second supporting leg, and the fixation of the first fixed plate outer surface is set There is light fixture, the light fixture includes the first coiled pipe, and the first coiled pipe lower end is welded in outside the first fixed plate Surface, upper end are fixedly connected with the battery case bottom of rectangle, and the battery box outer surfac is equipped with the switch of lateral rectangle, and Lampshade is electrically connected on the upside of battery case, installation is equipped with light bulb inside lampshade；Second supporting leg leading flank of front left side is equipped with rectangle Second fixed plate, the second fixed plate quadrangle pass through the 5th bolt respectively and are fixedly connected with the second supporting leg, and second is fixed Plate outer surface is equipped with the second coiled pipe, and the second coiled pipe lower end is welded in the second fixed plate outer surface, upper end with it is stainless The bottom of steel storage box is welded and fixed, and the storage box is square the structure of upper opening, and inside is divided into the first storage by partition Object lattice and the second matter storage lattice, annular second magnetic stripe of the storage box upper side edge along the first magnetic stripe and transparent box cover bottom by annular It mutually adsorbs, and side bonds are equipped with N-shaped handle on box cover.

2. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The test tube fixation kit includes cylindrical first fixed block for being welded in third collar footprint, the welding of the first fixed block bottom Equipped with flat cylindrical limited block, the 4th lantern ring, the 4th lantern ring or so outside are equipped on the first fixed block on the upside of limited block Face is respectively welded equipped with third coiled pipe, and the third coiled pipe end and the 5th lantern ring upside are welded and fixed, before the 4th lantern ring For side wall ecto-entad through having screwed the 6th bolt, the 5th collar side wall ecto-entad runs through the screwed with test tube clamp cooperation Seven bolts.

3. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The test tube fixation kit includes the stainless steel sphere for being welded in third collar footprint, the stainless steel sphere two sides difference Third coiled pipe is welded, the 5th lantern ring is welded and fixed in the third coiled pipe bottom, and the 5th collar side wall ecto-entad, which runs through, to screw There is the 7th bolt with test tube clamp cooperation.

4. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The test tube fixation kit includes the upright bar for being welded in the rectangular-shape of third collar footprint, the upright bar upper and lower ends portion It extends transversely through and has screwed the second screw rod, the second screw rod of top places from left to right, and the second screw rod of lower section is worn from right to left It sets, the part that is pierced by of the second bolt has screwed locking nut, and the 5th lantern ring, the 5th lantern ring side is welded and fixed in outer end respectively Wall ecto-entad runs through the 7th bolt screwed with test tube clamp cooperation.

5. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The common connecting bottom board in middle position on the inside of the first leg is respectively equipped between the front and back first leg at left and right sides of bottom plate Vertical side plate, table top, side plate and bottom plate connect to form the cavity body structure that front and back is open, and the cavity front and rear sides difference is embedding Enter a pair of of drawer.

6. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that First rubber block and the second rubber block bottom surface is fixed with intilted third rubber block respectively.

7. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The number of recesses is three, in inside and outside evenly distributed in rubber slab upper surface.

8. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that The quantity of first strut and the second strut is respectively three, and the first strut and the second strut or so correspond, respectively One group is formed, is equipped with the test tube fixation kit cooperated with groove between every group of strut.

9. a kind of multiple groups alcolhol burner and test tube fixing device based on senior middle school's experiment according to claim 1, characterized in that Embedded with cylindrical cavity in second fixed block, cavity right side is equipped with a through-hole, and vertical flat circle is embedded in cavity Cylindricality limited block, limited block are fixedly connected with the left part of the first screw rod of right side, and the first screw rod is stretched out in right side through hole.