CN209650640U - A kind of lower pumping vacuum packaging machine - Google Patents

Abstract

The utility model discloses a kind of lower pumping vacuum packaging machines, lower vacuum chamber components include the first and second gas path plate setting up and down, and the second gas circuit for extracting air between the first gas circuit of air and the upper and lower film of extraction between the lower film and the groove is provided on the first and second gas path plate；In the second air-path interface that the lower part of the second gas path plate is respectively set the first air-path interface to connect with the first gas circuit and connects with the second gas circuit；Molding lower film be placed on first gas path plate in the matched groove of lower film shape, the top of lower film described in the upper vacuum chamber components lower part is arranged in upper film.In this way, extracting air between the lower film and the groove by the first gas circuit on lower vacuum chamber components fixes lower film, and air between upper and lower film is extracted by the second gas circuit makes packing material evacuation between upper lower film, upper film is heated by upper vacuum chamber components and realizes sealer, to realize the packaging to liquid or liquid.

Description

A kind of lower pumping vacuum packaging machine

Technical field

The utility model belongs to packing technique field, in particular to a kind of lower pumping vacuum packaging machine.

Background technique

The air suction mode for the vacuum packing machine that the country uses at this stage is all upper pumping, can be remained very during pumping Mostly granular bits block gas circuit, it is not easy to clean, the packing material of liquid type is in addition vacuum-packed, the packing material of liquid type exists Because air pressure is close to absolute vacuum during vacuumizing, liquid will appear the state of boiling, the equipment meeting of upper pumping in low pressure The liquid of boiling is extracted out.

Utility model content

The main purpose of the utility model is to provide a kind of lower pumping vacuum packaging machines as a result, with packing liquid.

A kind of lower pumping vacuum packaging machine of the utility model comprising rack 4, the upper vacuum being installed in the rack 4 Chamber component 1, in upper 1 lower part of the vacuum chamber components setting lower vacuum chamber components 2, be connected with the rack 4 and described in driving The driving assembly 3 that lower vacuum chamber components 2 are gone up and down,

The lower vacuum chamber components 2 include the first and second gas path plate 21,24 setting up and down, first and second gas path plate 21, it is provided on 24 and extracts between lower film and groove 211 first gas circuit of air and extract second of air between upper and lower film Gas circuit；

The lower part of second gas path plate 24 be respectively set the first air-path interface 25 to connect with first gas circuit and The second air-path interface 26 to connect with second gas circuit；

Molding lower film be placed on first gas path plate 21 in the matched groove 211 of the lower film shape, upper film The top of lower film described in 1 lower part of upper vacuum chamber components is set.

By upper, extracting air between the lower film and the groove 211 by the first gas circuit on lower vacuum chamber components 2 makes Lower film is fixed, and is extracted air between upper and lower film by the second gas circuit and made packing material evacuation between upper lower film, by upper Vacuum chamber components 1 heat upper film and realize sealer, to realize the packaging to liquid or liquid.

Preferably, at least one described groove 211 is set on the upper surface of first gas path plate 21, the groove Multiple the first stomatas 212 through 21 thickness of the first gas path plate are set on bottom surface, at two of first gas path plate 21 The second stomatas 213 of multiple perforation bottoms are respectively set on width side along width direction, under first gas path plate 21 The first air drain 214 for being connected to second stomata 213 is provided on surface；

The second air drain 241 for being connected to first stomata 212 is provided on the upper surface of second gas path plate 24；

Be additionally provided on second gas path plate be connected to the third stomata 242 of first air-path interface 25 be connected to 4th stomata 243 of two air-path interfaces 26, wherein the third stomata 242 is connected to second air drain 241.

By upper, the air between the lower film and groove is existed by the setting of the first stomata 212, the first stomata 212 of connection The second air drain 241 on second gas path plate, being connected to second air drain 241 of being arranged on second gas path plate Third stomata 242 and the first air-path interface 25 being connected to third stomata 242 and external first vacuum pump form the One gas circuit extracts the air between lower film and groove, keeps lower film firm convenient for extracting the air between upper lower film；

Pass through the second stomata 213 being arranged on the first gas path plate, the company being arranged on the lower surface of the first gas path plate 21 4th stomata of the first air drain 214, the first air drain of connection 214 being arranged on the second gas path plate that lead to second stomata 213 243, the second air-path interface 26 for being connected with the 4th stomata 243 and the second gas path plate lower part is set with the second gas circuit The second vacuum pump that interface 26 is connected forms the second gas circuit to be made between lower film to extract the air between upper lower film Evacuation.

Preferably, first air drain 214 includes the first and second parallel horizontal branch air drain 2141,2142 and vertically connects institute The the first vertical branch air drain 2143 for stating horizontal branch air drain collectively forms I shape, and the first and second horizontal branch air drain and setting are in institute Second stomata 213 connection of 21 side of the first gas path plate is stated, the horizontal branch air drain 2143 of third is arranged in the described first vertical branch gas The side of slot 2143, and perpendicular connection.

Preferably, second air drain 241 includes:

It the horizontal branch air drain 2411~2413 of the four to six of three parallel intervals and is vertically connected with this three horizontal branch air drains Second vertical branch air drain 2414 is respectively set the of one and end vertical close to end position at the both ends of each horizontal branch air drain The end of three vertical branch air drains 2415 and the horizontal branch air drain constitutes cross-shaped structure, first stomata 212 and the vertical branch of the third The both ends of air drain 2415 are corresponding up and down；

The side of the second vertical branch air drain 2414 is additionally provided between described fourth, fifth horizontal branch air drain 2411,2412 With the 7th horizontal branch air drain 2416 of the described second vertical 2414 vertical connection of branch air drain；

The third stomata 242 and the 4th stomata 243 are separately positioned on one end of the described second horizontal branch air drain 2412 Two sides, the third stomata 242 is connected to the other end of the described 7th horizontal branch air drain 2416.

Preferably, first gas circuit includes: first stomata 212 being arranged on first gas path plate 21, sets Set second air drain 241, the third stomata 242,25 and of the first air-path interface on second gas path plate 24 First vacuum pump；

Second gas circuit includes: second stomata 213 being arranged on first gas path plate 21, first gas Slot 214, the 4th stomata 243 being arranged on second gas path plate 24, second air-path interface 26 and the second vacuum suction Pump.

By upper, the air between lower film and groove is extracted by the first gas circuit, keeps lower film firm convenient for extracting upper lower film Between air；The air between upper lower film is extracted by the second gas circuit, makes evacuation between lower film.

Preferably, the upper vacuum chamber components 1 include driving plate 13, the upper surface fixed setting of the driving plate 13 is at least Multiple spring eyes 131 are arranged in the driving plate 13 in one piston 12:

The bolt 1311 of shank of bolt upward is set in the through-hole 1314 of the spring eye 131 and is looped around the bolt The spring 1312 in 1311 outsides, the head of the bolt 1311 and the driving plate are connected, and the shank of bolt is with setting described The upper assembly housing 11 on 13 top of driving plate is connected, and the lower end of the spring 1312 and the driving plate are connected, and upper end is stuck in institute It states on the step 13141 in through-hole 1314.

By upper, shank of bolt and upper assembly housing 11 are connected, and bolt head and driving plate are connected, in the air pressure acted on piston When forcing piston pressing against driving plate to move downward, the spring being arranged in through-hole 1314 is compressed, and driving plate declines to upper lower film Carry out envelope pressure.

Preferably, being set in the shell 151 of the sealing-in plate 15 in the connected sealing-in plate 15 in the lower part of the driving plate 13 It is equipped with heating equipment.

Preferably, the heating equipment includes at least one the heating folder being arranged in the shell 151 of the sealing-in plate 15 Tool 152, each heated jig 152 is interior to be arranged two heating rods.

It by upper, is heated by the heating rod being arranged in heating furniture 152, heating furniture 152 is arranged in sealing-in plate In 15, so that sealing-in plate 15 heats upper film, and upper lower film envelope is forced together.

Preferably, the driving component 3 drives the link mechanism moved up and down, institute including cylinder 31 and by the cylinder 31 Stating link mechanism includes setting up 31 two sides of cylinder separately to stretch out the parallel multiple connecting rods in direction with it and connect the more of connecting rod described in two sides A connecting shaft, the lower vacuum chamber components 2 are arranged on the link mechanism.

By upper, when the extension bar of cylinder 31 stretches out, drive link mechanism rises, and the lower vacuum chamber on link mechanism is arranged in Component rises, the fitting of upper and lower vacuum chamber components, and by upper and lower film compacting, acting pneumatic is forced under driving plate and sealing-in plate on piston Drop heats upper film and applies pressure to upper and lower film, lower film is made to bond together.

Preferably, connecting rod described in every side includes first to fourth connecting rod 3211~3214, set on the first connecting rod 3211 There are head and end and intermediate 3 tie points, the connecting shaft includes that the intermediate piston rod with the cylinder 31 is socketed, both ends are distinguished The top of the first connecting shaft 3221, the first connecting shaft of Yu Suoshu 3221 that are connected with two 3211 head ends of first connecting rod is set Set and both ends fix and be socketed respectively on the inside of its both ends two first connecting rods intermediate connection point the second connecting shaft 3222, the top of the second connecting shaft of Yu Suoshu 3222 be arranged its both ends be separately connected two first connecting rods end and two The third connecting shaft 3223 of described 3212 one end of second connecting rod is separately connected with the third connecting shaft with its both ends highly is arranged Two 3212 other ends of second connecting rod and the fourth connecting shaft 3224 of two described 3213 one end of third connecting rod, Yu Suoshu are watched The lower part on the top and the fourth connecting shaft that take hydraulic cylinder is arranged its both ends and fixes and be socketed two respectively on the inside of its both ends 5th connecting shaft 3225 of the third connecting rod other end, two fourth links 3214 are parallel and with described first to the 5th Connecting shaft is vertically arranged, and one end suit of two fourth links is the of the 5th connecting shaft top fixed setting It in six connecting shafts 3226, and is rotated around the 6th connecting shaft, intermediate portion and the other end connect with described third and fourth respectively Spindle is affixed.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of lower pumping vacuum packaging machine of the utility model；

Fig. 2 is the structural schematic diagram of assembly housing on the utility model；

Fig. 3 is the structural schematic diagram of the utility model driving plate and sealing-in plate；

Fig. 4 is the structural schematic diagram of the utility model spring eye；

Fig. 5 is the structural schematic diagram of the utility model sealing-in plate；

Fig. 6 is the structural schematic diagram of vacuum chamber components under the utility model；

Fig. 7 is the top view of the first gas path plate of the utility model；

Fig. 8 is the bottom substance schematic diagram of the first gas path plate of the utility model；

Fig. 9 is the top view of the second gas path plate of the utility model；

Figure 10 is the structural schematic diagram of the utility model driving assembly.

Specific embodiment

Lower pumping vacuum packaging machine as shown in Figure 1 comprising rack 4, the upper vacuum chamber group being fixed in rack 4 Part 1, in the setting of upper 1 lower part of vacuum chamber components lower vacuum chamber components 2 and be connected with rack 4 and drive 2 liters of lower vacuum chamber components The driving assembly 3 of drop.

Upper vacuum chamber components 1

Fig. 2 is the structural schematic diagram of the upper assembly housing 11 of upper vacuum chamber components 1, in the inside bottom surface of upper assembly housing 11 Two grooves 111 to match with aftermentioned two top lands are set, each groove 111 center be arranged one into Stomata 112；

Fig. 3 is that the component tipped upside down in assembly housing 11 is disposed with is connected from the top down according to shown in Fig. 3 Driving plate 13, connecting plate 14 and envelope pressing plate 15, two pistons 12 in top be arranged in driving plate 13, it is right in driving plate 13 Claim setting 12 spring eyes 131, Fig. 4 is the structure chart of spring eye 131, and bolt 1311 is arranged in through-hole 1314 and is looped around The spring 1312 in 1311 outside of bolt, the shank of bolt of bolt 1311 are arranged upward, and shank of bolt and upper assembly housing 11 are connected, spiral shell Bolt head and connecting plate 1313 are connected, and the lower end of spring 1312 and connecting plate 1313 are connected, and upper end is stuck in the step of through-hole 1314 On.When the gas of 0.6MP comes in act on two pistons 12 from air inlet 112, when the active force acted on piston 12 Greater than spring 1312 spring force when, driving plate 13, connecting plate 14 and sealing-in plate 15 decline the packet to 15 lower part of sealing-in plate together Pack carry out heating sealing-in, when no longer ventilate in air inlet 112 body when, driving plate 13, connecting plate under the action of spring 1312 14 and sealing-in plate 15 rise reset together.

Fig. 5 is the structural schematic diagram of sealing-in plate 15, four heated jigs 152 is fixedly installed in sealing-in plate shell 151, often The bottoming hole 153 of two placement heating rods is set on a heated jig 152, and heating rod heats in heated jig 152, sealing-in plate Shell 151 is heated, and carries out heating encapsulation to as the packing material in lower component when moving downward.

Lower vacuum chamber components 2

As shown in fig. 6, lower vacuum chamber components 2 include lower vacuum room housing 22, are placed in lower 22 upper surface of vacuum room housing First gas path plate 21, the baffle 23 for being placed in lower 22 lower part of vacuum room housing, the second gas path plate 24 for being placed in 23 lower part of baffle and The first air-path interface 25 and the second air-path interface 26 for being placed in 24 lower part of the second gas path plate and being attached thereto.

Fig. 7 is the structural schematic diagram of the first gas path plate 21, and the first gas path plate 21 is square plate, the centre of the first gas path plate 21 3 grooves 211 compatible with molding lower film shape are arranged in position, and lower film is close to the upper surface setting of groove 211, every The first stomata 212 of 4 perforation bottoms is arranged in the bottom symmetrical of a groove 211；Divide in 21 two sides width edge of the first gas path plate Not She Zhi 5 perforation bottoms the second stomata 213, setting is connected to all second stomatas on the lateral surface of 21 bottom of the first gas path plate 213 I-shaped first air drain 214, as shown in Figure 8 comprising two the first and second parallel horizontal 2141~2142 Hes of branch air drain The vertically vertical branch air drain 2143 of two horizontal branch air drains 2141~2142 of connection, each horizontal branch air drain connection are arranged in the first gas path plate 5 the second stomatas 213 on 21 width sides, the horizontal branch air drain 2143 of third are arranged in the side of vertical branch air drain 2143, and and its Vertical connection.

Fig. 9 is the structural schematic diagram of the second gas path plate 24, is set to 23 lower part of baffle, it is every that upper surface is equipped with connection The entirety of a first stomata 212 is in second air drain 241 of " king " font, and the second air drain 241 includes three parallel four to six Horizontal branch air drain 2411~2413 and with the second vertical branch air drain 2414 for being vertically connected in the middle part of three horizontal branch air drains, in each cross The third that one and end vertical is arranged respectively close to end position in the two sides of branch air drain indulges branch air drain 2415, and third indulges branch air drain 2415 and the end of each horizontal branch air drain constitute cross-shaped structure, the both ends of the first stomata 212 and small vertical branch air drain are respectively up and down It is corresponding；242 He of third stomata of the first air-path interface 25 of connection is respectively set in the two sides of one end of the second horizontal branch air drain 2412 Connect the 4th stomata 243 of the second air-path interface 26；The side of the second vertical branch air drain 2414 is also between fourth, fifth horizontal branch air drain It is provided with the 7th horizontal branch air drain 2416 with the second vertical 2414 vertical connection of branch air drain, third stomata 242 and the 7th horizontal branch air drain 2416 other end connection.When work, the first air-path interface 25 connects with vacuum pump, vacuum pump pumping, third gas Hole 242 is connected by the second air drain 241 with each first stomata 212, and the sky between lower film and vacuum room housing 22 is extracted Gas makes lower film be close to vacuum room housing 22, the air convenient for fixing lower film, in extraction between lower film；Second air-path interface 26 Also connecting with vacuum pump, when vacuum pump extracts air, the second air-path interface 26 is connected with the first air drain 214, the One air drain 214 is connected with each second stomata 213, and each horseshoe hole in lower film is corresponding with each about 213 second stomata, The air between lower film can be extracted in this way, make the packing material vacuum state between lower film.

Driving assembly 3

Figure 10 is the structural schematic diagram of driving assembly 3 comprising cylinder 31 and the connecting rod moved up and down by the driving of cylinder 31 Mechanism 32, link mechanism 32 includes the connecting shaft for setting up the connecting rod and connection two sides connecting rod of two sides separately, wherein every side connecting rod includes the One connecting rod 3211, second connecting rod 3212, third connecting rod 3213 and fourth link 3214, wherein first connecting rod 3211 is bending State, there is head and end and intermediate 3 tie points thereon, and connecting shaft includes being connected with the piston rod of cylinder 31 and connecting two first First connecting shaft 3221 of 3211 head end of connecting rod, fixed setting and be connected with the intermediate connection point of two first connecting rods 3211 the Two connecting shafts 3222, the third connecting shaft of the end of two first connecting rods 3211 of connection and two 3212 one end of second connecting rod 3223, connect two 3212 other ends of second connecting rod and two 3213 one end of third connecting rod the fourth connecting shaft 3224, with two 3213 other end of third connecting rod is connected and the 5th connecting shaft 3225 of fixed setting, and fourth link 3214 is two disposed in parallel Connecting rod, two connecting rods are sleeved in the 6th connecting shaft 3226 of fixed setting, and are rotated around the 6th connecting shaft 3226, should The middle section of two connecting rods and the other end are affixed with the fourth connecting shaft 3224 and third connecting shaft 3223 respectively.

When the piston rod of cylinder 31 stretches out, the forward movement of the first connecting shaft 3221 is push, the first connecting shaft is mounted on The first connecting rod 3211 at 3221 both ends is rotated around the second connecting shaft of fixed setting, makes third connecting shaft 3223 to the first connection The opposite direction of axis 3221 and upwardly direction are mobile, since the 5th connecting shaft 3225 and the 6th connecting shaft 3226 are fixedly installed, Third connecting shaft 3223 forces the fourth connecting shaft 3224 that can only move upwards when moving, while upward with third connecting shaft 3223 Movement, the lower vacuum chamber components 2 being arranged in fourth link 3214 move upwards, the molding lower die contact on lower film assembly housing To upper component lower part upper film when, the sealing-in plate on upper component 1 is moved down upper and lower membrane sealing together.

Lower film does intermittent movement according to pitch, when the lower film of forming moves to the lower component shell in vacuum lower component 2 When position, the horseshoe hole on thimble 1 (not marking in figure) and lower film is corresponded, horseshoe hole and the first gas path plate 21 in lower film On the second stomata 213 it is corresponding up and down one by one, aspirating hole and gas return path are generated in this way between upper and lower film, between upper lower film Air be pumped out by the vacuum being connected with two air-path interfaces 26.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (10)

1. a kind of lower pumping vacuum packaging machine comprising rack (4), the upper vacuum chamber components being installed on the rack (4) (1), in the lower vacuum chamber components (2) of upper vacuum chamber components (1) the lower part setting, be connected with the rack (4) and drive institute State the driving assembly (3) of lower vacuum chamber components (2) lifting, which is characterized in that

The lower vacuum chamber components (2) include the first and second gas path plate (21,24) setting up and down, first and second gas path plate (21,24) it is provided on and extracts the first gas circuit of air between lower film and groove (211) and extract air between upper and lower film Second gas circuit；

The lower part of second gas path plate (24) be respectively set the first air-path interface (25) to connect with first gas circuit and The second air-path interface (26) to connect with second gas circuit；

Molding lower film is placed in inner with the matched groove of lower film shape (211) on first gas path plate (21), upper film The top of the lower film described in upper vacuum chamber components (1) lower part is set.

2. lower pumping vacuum packaging machine according to claim 1, which is characterized in that

At least one described groove (211) is set on the upper surface of first gas path plate (21), is set on the bottom surface of the groove Multiple the first stomatas (212) through the first gas path plate (21) thickness are set, in the two wide of first gas path plate (21) The second stomata (213) of multiple perforation bottoms is respectively set on degree side along width direction, first gas path plate (21) The first air drain (214) for being connected to second stomata (213) is provided on lower surface；

The second air drain (241) for being connected to first stomata (212) is provided on the upper surface of second gas path plate (24)；

Be additionally provided on second gas path plate be connected to the third stomata (242) of first air-path interface (25) be connected to 4th stomata (243) of two air-path interfaces (26), wherein the third stomata (242) is connected to second air drain (241).

3. lower pumping vacuum packaging machine according to claim 2, which is characterized in that first air drain (214) includes flat The horizontal branch air drain (2141~2142) of capable first and second and the first vertical branch air drain (2143) for vertically connecting the horizontal branch air drain, altogether With I shape is constituted, the first and second horizontal branch air drain and setting are described the second of the first gas path plate (21) side Stomata (213) connection, the setting of third horizontal branch air drain (2143) are and perpendicular in the side of the described first vertical branch air drain (2143) Connection.

4. lower pumping vacuum packaging machine according to claim 2, which is characterized in that second air drain (241) includes:

The horizontal branch air drain (2411~2413) of the four to six of three parallel intervals and be vertically connected with this three horizontal branch air drains Two vertical branch air drains (2414) are respectively set the of one and end vertical close to end position at the both ends of each horizontal branch air drain The end of three vertical branch air drains (2415) and the horizontal branch air drain constitutes cross-shaped structure, first stomata (212) and the third The both ends of vertical branch air drain (2415) are corresponding up and down；

The side of the second vertical branch air drain (2414) is additionally provided between described fourth, fifth horizontal branch air drain (2411,2412) With the 7th horizontal branch air drain (2416) of the described second vertical branch air drain (2414) vertical connection；

The third stomata (242) and the 4th stomata (243) are separately positioned on the one of the described 5th horizontal branch air drain (2412) The two sides at end, the third stomata 242 are connected to the other end of the described 7th horizontal branch air drain (2416).

5. lower pumping vacuum packaging machine according to claim 4, which is characterized in that

First gas circuit includes: first stomata (212) being arranged on first gas path plate (21), is arranged described Second air drain (241), the third stomata (242), first air-path interface (25) on second gas path plate (24) and First vacuum pump；

Second gas circuit includes: second stomata (213) being arranged on first gas path plate (21), first gas Slot (214), the 4th stomata (243), second air-path interface (26) and second being arranged on second gas path plate (24) Vacuum pump.

6. lower pumping vacuum packaging machine according to claim 1, which is characterized in that

The upper vacuum chamber components (1) include driving plate (13), at least one is fixedly installed in the upper surface of the driving plate (13) Multiple spring eyes (131) are arranged on the driving plate (13) in piston (12):

The inner setting shank of bolt of through-hole (1314) in the spring eye (131) bolt (1311) upward and it is looped around the bolt (1311) spring (1312) on the outside of, the head of the bolt (1311) and the driving plate are connected, the shank of bolt and setting Upper assembly housing (11) on the driving plate (13) top is connected, and the lower end of the spring (1312) and the driving plate are solid Even, upper end is stuck on the step (13141) in the through-hole (1314).

7. lower pumping vacuum packaging machine according to claim 6, which is characterized in that solid in the lower part of the driving plate (13) An even sealing-in plate (15) is provided with heating equipment in the shell (151) of the sealing-in plate (15).

8. lower pumping vacuum packaging machine according to claim 7, which is characterized in that the heating equipment includes being arranged in institute State at least one heated jig (152) in the shell (151) of sealing-in plate (15), setting in each heated jig (152) Two heating rods.

9. lower pumping vacuum packaging machine according to claim 1, which is characterized in that the driving component (3) includes servo Hydraulic cylinder (31) and the link mechanism moved up and down by the servo hydraulic cylinder (31) driving, the link mechanism include setting up separately to watch Take hydraulic cylinder (31) two sides with its stretch out the parallel multiple connecting rods in direction and connection two sides described in connecting rod multiple connecting shafts, it is described Lower vacuum chamber components (2) are arranged on the link mechanism.

10. lower pumping vacuum packaging machine according to claim 9, which is characterized in that

Connecting rod described in every side includes first to fourth connecting rod (3211~3214), and the first connecting rod (3211) is equipped with first and last two End and intermediate 3 tie points, the connecting shaft include that centre is distinguished with the piston rod socket of the servo hydraulic cylinder (31), both ends The first connecting shaft (3221) for being connected with two first connecting rod (3211) head ends, the first connecting shaft of Yu Suoshu (3221) it is upper The second connection of the intermediate connection point of two first connecting rods is fixed and is socketed respectively on the inside of its both ends at portion's setting and both ends Axis (3222), the second connecting shaft of Yu Suoshu (3222) top the end that its both ends is separately connected two first connecting rods is set With the third connecting shaft (3223) of two described second connecting rod (3212) one end, with the third connecting shaft be highly arranged its two End is separately connected the 4th connection of two second connecting rod (3212) other ends and two described third connecting rod (3213) one end The lower part of axis (3224), the top of Yu Suoshu servo hydraulic cylinder and the fourth connecting shaft is arranged its both ends and fixes and at its both ends Inside is socketed the 5th connecting shaft (3225) of two third connecting rod other ends respectively, and two fourth links (3214) are flat It goes and is vertically arranged with the described first to the 5th connecting shaft, one end suit of two fourth links is that the described 5th connects It in 6th connecting shaft (3226) of spindle top fixed setting, and is rotated around the 6th connecting shaft, intermediate portion and another One end is affixed with third and fourth described connecting shaft respectively.