CN109366425A

CN109366425A - A kind of steel construction processing platform

Info

Publication number: CN109366425A
Application number: CN201811282531.9A
Authority: CN
Inventors: 夏学云
Original assignee: Shanghai Min Xuan Steel Structure Work Co Ltd
Current assignee: Shanghai Min Xuan Steel Structure Work Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2019-02-22

Abstract

The present invention relates to technical fields of mechanical processing, and disclose a kind of steel construction processing platform, including two the first tracks disposed in parallel, second track parallel with the first track with two is welded on two the first tracks, being slidably connected on two the first tracks and two the second tracks, there are two corresponding workbench bodies, workbench body includes top plate, multiple equally distributed mounting holes are offered at the top of top plate, the bottom of top plate is welded with multiple equally distributed support rods, the bottom of multiple support rods is welded with bottom plate jointly, link block is welded at the bottom four corners of bottom plate, the side of four link blocks passes through shaft and is rotatably connected to traveling wheel, four traveling wheels, which are rolled with the top of the first track, to be connected.The position of the steel construction processing platform, adjustable workbench and fixture is come so that the component of multiple steel constructions is convenient for by the vice institute fixed calibration of different location angle, and is conducive to subsequent processing.

Description

A kind of steel construction processing platform

Technical field

The present invention relates to technical field of mechanical processing, specially a kind of steel construction processing platform.

Background technique

The structure that steel construction is made of steel material is one of main building construction types, and structure is mainly by fashioned iron With the components composition such as girder steel, steel column, steel truss made of steel plate etc., generallyd use between each component or component weld seam, bolt or Rivet interlacement.The usually similar desk of processing platform at present, structure is single, and function is less, while again since steel construction is general Volume is larger, and existing processing platform is difficult to the component of multiple steel constructions be fixed calibration.

Summary of the invention

(1) the technical issues of solving

In view of the deficiencies of the prior art, the present invention provides a kind of steel construction processing platform, have convenient for fixed calibration steel construction The advantages that, solve the problems, such as that the component of steel construction is difficult to that calibration is fixed.

(2) technical solution

To realize the above-mentioned purpose convenient for fixed calibration steel construction, the invention provides the following technical scheme: a kind of steel construction is processed Platform, including two the first tracks disposed in parallel are welded on two first tracks equal with the first track with two The second capable track, being slidably connected on two first tracks and two the second tracks, there are two the corresponding work playscripts with stage directions Body, the workbench body include top plate, and multiple equally distributed mounting holes are offered at the top of the top plate, the top plate Bottom is welded with multiple equally distributed support rods, and the bottom of multiple support rods is welded with bottom plate jointly, the bottom plate It is welded with link block at bottom four corners, the side of four link blocks passes through shaft and is rotatably connected to traveling wheel, and four The traveling wheel, which is rolled with the top of the first track, to be connected, and adjusting clamping device, the adjusting folder are provided on the top plate Holding mechanism includes the first threaded rod, and first threaded rod is located in one of in mounting hole, and first threaded rod is located at top Sidewall thread below plate is socketed with nut, and fixed plate, the bottom of the fixed plate are welded at the top of first threaded rod It is bonded with rubber pad by glue, L-type annular groove, the inner wall rotation connection of the L-type annular groove are offered at the top of the fixed plate There is the connection ring to match with L-type annular groove, the outside of L-type annular groove extended at the top of the connection ring, and is welded with adjustment seat, Turn trough is offered at the top center of the adjustment seat, the inner wall of the turn trough is rotatably connected to connecting rod, the connecting rod position In the side wall fixing sleeve in turn trough it is connected to first gear, the inner rotation of the adjustment seat is connected with to be meshed with first gear Second gear is fixedly connected with bull stick at the axle center of the second gear, and the top of the bull stick extends to the top of adjustment seat, And it is welded with hexagonal bolt head, the top of the connecting rod is integrally formed with the second threaded rod, the side wall of second threaded rod Screw thread adjusting has a sleeve, and the bottom of the sleeve opens up that there are two symmetrical telescopic hole, the inner tops of two telescopic holes Be fixedly connected to slide bar, the side wall of two slide bars slidably connects hollow tube, two hollow tubes with it is flexible Hole is corresponding, and the bottom of two hollow tubes be fixedly linked at the top of adjustment seat, be welded with vice at the top of the sleeve, The middle position of two first tracks and two the second tracks is provided with hoisting mechanism.

Preferably, the hoisting mechanism includes mounting base, four side walls of the mounting base respectively with the first track and second The side wall of track mutually welds, and the link slot that cross section is T-type is offered at the top center of the mounting base, the link slot Inner wall is rotatably connected to the connector to match with link slot, and the top of the connector is integrally formed with turntable, the turntable Outer circle side wall be provided with the gear teeth, the second motor, the top fixing sleeve of second motor are embedded at the top of the mounting base It is connected to third gear, the third gear is meshed with the gear teeth, and it is solid that hollow first is welded at the top center of the turntable Fixed pole, the top that the turntable is located in the first fixed link are fixedly connected with first motor, the output shaft end of the first motor End fixing sleeve is connected to winding wheel, and the outer circle side wall of the winding wheel is wrapped with wirerope, the top welding of first fixed link There is the second fixed link being laterally arranged, is rotatably connected to first by shaft at the inner wall edge of second fixed link and slides calmly Wheel, second fixed link offer the sliding slot of annular far from the side of the first fixed pulley, and the inner wall of the sliding slot is slidably connected There is third fixed link, and third fixed link is connected with the inside of the second fixed link, the third fixed link is fixed far from second One end inner wall of bar is rotatably connected to the second fixed pulley by shaft, and the bottom of second fixed link is offered to be fixed with first The bottom of the first through hole that bar is connected, the third fixed link offers the second through-hole, institute far from one end of the first fixed link It states wirerope and passes sequentially through first through hole, the first fixed pulley, the second fixed pulley and the second through-hole far from one end of winding wheel, and prolong The outside of third fixed link is extended to, the bottom of second fixed link is fixedly connected with electric pushrod, and the electric pushrod pushes away Bar end is welded with shifting block, and third fixed link is run through on the top of the shifting block, and extends to the inside of the second fixed link.

Preferably, the middle position of the bottom plate offers blanking groove, is set as opposite with blanking groove at the top of the bottom plate The rotary table inclined-plane answered, the bottom of the bottom plate are fixedly connected with hook, and the bottom of the bottom plate is located at the two sides welding of blanking groove There is symmetrical sliding block, the bottom of the bottom plate is equipped with collection box corresponding with blanking groove, the side wall top of the collection box It is welded with the slide plate to match with sliding block, the collection box is connected by slide plate with the sliding of the inner wall of sliding block.

Preferably, the bottom of the link block is rotatably connected to the position-limited wheel being laterally arranged, the position-limited wheel by shaft The side wall rolling of outer circle side wall and the first track be connected.

Preferably, storage tank is welded at the bottom margin of the bottom plate, the side of the storage tank is rotated by hinge It is connected with overhead door.

Preferably, the wirerope is fixedly connected with hook far from one end of winding wheel.

Preferably, the side wall bottom end rotation of first fixed link is socketed with shield, and the bottom of the shield passes through It is fixedly linked at the top of bolt and mounting base, the third gear is located in shield.

(3) beneficial effect

Compared with prior art, the present invention provides a kind of steel construction processing platform, have it is following the utility model has the advantages that

1, the steel construction processing platform, by the setting of orthogonal first track and the second track, and in the first track and The workbench body that can be slid along is set on the second track, it can be respectively in the workbench body of long rails and transverse rails The different components that steel construction is placed in the workbench body in road carry out welding and Combined machining to two components, pass through multiple tune The setting of clamping device is saved, multiple adjusting clamping devices can be arbitrarily installed in any one mounting hole on top plate, so that Vice can select clip position according to the big small size of steelwork component, by the setting of bull stick, be turned using tool rotation Bar, bull stick drives the rotation of the second threaded rod by first gear and second gear, sleeve is moved up and down, and can adjust The height of vice is saved, by the setting of adjustment seat, adjustment seat can be freely rotated in fixed plate, and can adjust the side of vice To so that the component of multiple steel constructions is convenient for by the vice institute fixed calibration of different location angle, and being conducive to subsequent Processing.

2, the steel construction processing platform, by the setting of collection box, the steel construction on top plate is on ground, cutting or surface When processing, a large amount of clast can be generated, a large amount of clast is fallen on top plate, and by mounting hole fall into lower section bottom plate on, and By being slid into collection box under the ramp effect of bottom plate, consequently facilitating the rubbish generated during collecting processing.

3, the steel construction processing platform, by the setting of hoisting mechanism, one end of wirerope is provided with hook, hooks on hook Firmly bandage, and bandage is mutually tightened with steel construction, first motor starting drives winding wheel rotation, to can control the wirerope other end The lifting of hook, the second electric motor starting can be such that hook rotates by third gear band turn disc spins, and electric pushrod pushes away Bar is flexible to drive third fixed link to slide in the second fixed link, and can adjust the distance between hook and the first fixed link, So as to be easy to use hoisting mechanism mobile steelwork component in machine table, without arduously to use manual handling.

Detailed description of the invention

Fig. 1 is a kind of overlooking structure diagram of steel construction processing platform proposed by the present invention；

Fig. 2 is the A-A of Fig. 1 to sectional view；

Fig. 3 is a kind of structural schematic diagram of the adjusting clamping device of steel construction processing platform proposed by the present invention；

Fig. 4 is a kind of structural schematic diagram of the hoisting mechanism of steel construction processing platform proposed by the present invention.

In figure: 1 top plate, 2 first tracks, 3 mounting holes, 4 second fixed links, 5 third fixed links, 6 second tracks, 7 protection Cover, 8 mounting bases, 9 vices, 10 position-limited wheels, 11 traveling wheels, 12 storage tanks, 13 bottom plates, 14 support rods, 15 first threaded rods, 16 are adjusted Save seat, 17 sleeves, 18 second threaded rods, 19 hollow tubes, 20 fixed plates, 21 connection rings, 22 second gears, 23 connectors, 24 turns Disk, 25 first fixed links, 26 first motors, 27 wirerope, 28 electric pushrods, 29 first fixed pulleys, 30 third gears, 31 second Motor, 32 collection boxes.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Please refer to Fig. 1-4, a kind of steel construction processing platform, including two the first tracks 2 disposed in parallel, two the first rails Second track 6 parallel with the first track 2 with two is welded on road 2, on two the first tracks 2 and two the second tracks 6 Being slidably connected, there are two corresponding workbench bodies, and workbench body includes top plate 1, and the top of top plate 1 offers multiple Equally distributed mounting hole 3, the bottom of top plate 1 are welded with multiple equally distributed support rods 14, the bottom of multiple support rods 14 It is welded with bottom plate 13 jointly, link block is welded at the bottom four corners of bottom plate 13, the side of four link blocks passes through shaft It is rotatably connected to traveling wheel 11, four traveling wheels 11, which are rolled with the top of the first track 2, to be connected, and adjusting is provided on top plate 1 Clamping device, adjusting clamping device includes the first threaded rod 15, and the first threaded rod 15 is located in one of in mounting hole 3, and first The sidewall thread that threaded rod 15 is located at 1 lower section of top plate is socketed with nut, and the top of the first threaded rod 15 is welded with fixed plate 20, Gu The bottom of fixed board 20 is bonded with rubber pad by glue, and the top of fixed plate 20 offers L-type annular groove, and the inner wall of L-type annular groove turns Dynamic to be connected with the connection ring 21 to match with L-type annular groove, the top of connection ring 21 extends to the outside of L-type annular groove, and is welded with Adjustment seat 16 offers turn trough at the top center of adjustment seat 16, and the inner wall of turn trough is rotatably connected to connecting rod, and connecting rod is located at Side wall fixing sleeve in turn trough is connected to first gear, and the inner rotation of adjustment seat 16 is connected with second to be meshed with first gear Gear 22 is fixedly connected with bull stick at the axle center of second gear 22, and the top of bull stick extends to the top of adjustment seat 16, and welds There is hexagonal bolt head, integrally formed with the second threaded rod 18, the sidewall thread adjusting of the second threaded rod 18 has at the top of connecting rod Sleeve 17, the bottom of sleeve 17 are opened up there are two symmetrical telescopic hole, and the inner top of two telescopic holes is fixedly connected to cunning Bar, the side wall of two slide bars slidably connect hollow tube 19, and two hollow tubes 19 are corresponding with telescopic hole, and two hollow Top of the bottom of pipe 19 with adjustment seat 16 is fixedly linked, and the top of sleeve 17 is welded with vice 9, two 2 Hes of the first track The middle position of two the second tracks 6 is provided with hoisting mechanism.

Hoisting mechanism includes mounting base 8, four side walls of the mounting base 8 side wall phase with the first track 2 and the second track 6 respectively It welds, the link slot that cross section is T-type is offered at the top center of mounting base 8, the inner wall of link slot is rotatably connected to and connects The connector 23 that access slot matches, integrally formed with turntable 24, the outer circle side wall of turntable 24 is provided with wheel at the top of connector 23 Tooth, the top of mounting base 8 are embedded with the second motor 31, and the top fixing sleeve of the second motor 31 is connected to third gear 30, third tooth Wheel 30 is meshed with the gear teeth, the first hollow fixed link 25 is welded at the top center of turntable 24, it is solid that turntable 24 is located at first Top in fixed pole 25 is fixedly connected with first motor 26, and the output shaft end of first motor 26 has been fixedly attached winding wheel, receives The outer circle side wall of rolling wheel is wrapped with wirerope 27, and the top of the first fixed link 25 is welded with the second fixed link 4 being laterally arranged, the First fixed pulley 29 is rotatably connected to by shaft at the inner wall edge of two fixed links 4, the second fixed link 4 is far from the first fixed pulley 29 side offers the sliding slot of annular, and the inner wall of sliding slot slidably connects third fixed link 5, and third fixed link 5 and second The inside of fixed link 4 is connected, and one end inner wall of the third fixed link 5 far from the second fixed link 4 is rotatably connected to by shaft Two fixed pulleys, the bottom of the second fixed link 4 offer the first through hole being connected with the first fixed link 25, third fixed link 5 Bottom offers the second through-hole far from one end of the first fixed link 25, and wirerope 27 passes sequentially through first far from one end of winding wheel Through-hole, the first fixed pulley 29, the second fixed pulley and the second through-hole, and the outside of third fixed link 5 is extended to, the second fixed link 4 Bottom be fixedly connected with electric pushrod 28, the push rod end of electric pushrod 28 is welded with shifting block, and third is run through on the top of shifting block Fixed link 5, and extend to the inside of the second fixed link 5.

The middle position of bottom plate 13 offers blanking groove, and it is oblique that the top of bottom plate 13 is set as rotary table corresponding with blanking groove Face, the bottom of bottom plate 13 are fixedly connected with hook, and the two sides that the bottom of bottom plate 13 is located at blanking groove are welded with symmetrical sliding block, The bottom of bottom plate 13 is equipped with collection box 32 corresponding with blanking groove, and the side wall top of collection box 32 is welded with to match with sliding block Slide plate, collection box 32 is connected by the inner wall sliding of slide plate and sliding block.

The bottom of link block is rotatably connected to the position-limited wheel 10 being laterally arranged by shaft, the outer circle side wall of position-limited wheel 10 with The side wall of first track 2, which rolls, to be connected, and so that workbench body is smoothly slided in orbit, does not fall out.

Storage tank 12 is welded at the bottom margin of bottom plate 13, the side of storage tank 12 is rotatably connected to by hinge to be turned over Door, convenient for the tool of storage plus man-hour requirement.

Wirerope 27 is fixedly connected with hook far from one end of winding wheel, convenient for slinging steelwork component.

The side wall bottom end rotation of first fixed link 25 is socketed with shield 7, and the bottom of shield 7 passes through bolt and mounting base 8 top is fixedly linked, and third gear 30 is located in shield 7.

To sum up, steel construction processing platform, by the setting of orthogonal first track 2 and the second track 6, and The workbench body that can be slid along is set on one track 2 and the second track 6, it can be respectively in the work playscript with stage directions of long rails The different components that steel construction is placed in the workbench body of body and cross track carry out welding and Combined machining to two components, By multiple settings for adjusting clamping device, multiple any one peace that adjusts clamping device and can be arbitrarily installed on top plate 1 It fills in hole 3, allows vice 9 to select clip position according to the big small size of steelwork component, by the setting of bull stick, make Bull stick is rotated with tool, bull stick drives the rotation of the second threaded rod 18 by first gear and second gear 22, enables sleeve 17 It is enough to move up and down, and the height of vice 9 can be adjusted, by the setting of adjustment seat 16, adjustment seat 16 can be certainly in fixed plate 20 By rotating, and the direction of vice 9 can be adjusted, so that the component of multiple steel constructions is convenient for by the tiger of different location angle Clamp 9 fixed calibrations, and be conducive to subsequent processing, by the setting of collection box 32, steel construction on top plate 1 it is ground, When cutting or surface treatment, a large amount of clast can be generated, a large amount of clast is fallen on top plate 1, and falls into lower section by mounting hole 3 Bottom plate 13 on, and by being slid into collection box 32 under the ramp effect of bottom plate 13, consequently facilitating during collecting processing The rubbish of generation, by the setting of hoisting mechanism, one end of wirerope 27 is provided with hook, catches on bandage on hook, and bandage It is mutually tightened with steel construction, the starting of first motor 26 drives winding wheel rotation, to can control the liter of 27 other end of wirerope hook Drop, the starting of the second motor 31 drives turntable 24 to rotate by third gear 30, and hook can be made to rotate, and electric pushrod 28 pushes away Bar is flexible to drive third fixed link 5 to slide in the second fixed link 4, and can adjust between hook and the first fixed link 25 away from From so as to be easy to use hoisting mechanism mobile steelwork component in machine table, without arduously to use manual handling.

It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability Contain, so that the process, method, article or equipment for including a series of elements not only includes those elements, but also including Other elements that are not explicitly listed, or further include for elements inherent to such a process, method, article, or device. In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element Process, method, article or equipment in there is also other identical elements.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. a kind of steel construction processing platform, including two the first tracks (2) disposed in parallel, it is characterised in that: two described Be welded with second track (6) parallel with the first track (2) with two on one track (2), two first tracks (2) and Being slidably connected on two the second tracks (6), there are two corresponding workbench bodies, and the workbench body includes top plate (1), multiple equally distributed mounting holes (3) are offered at the top of the top plate (1), the bottom of the top plate (1) is welded with more The bottom of a equally distributed support rod (14), multiple support rods (14) is welded with bottom plate (13), the bottom plate jointly (13) link block is welded at bottom four corners, the side of four link blocks passes through shaft and is rotatably connected to traveling wheel (11), four traveling wheels (11) roll with the top of the first track (2) and are connected, and are provided with adjusting on the top plate (1) Clamping device, the adjusting clamping device include the first threaded rod (15), and first threaded rod (15) is located in one of peace It fills in hole (3), first threaded rod (15) is located at the sidewall thread below top plate (1) and is socketed with nut, first screw thread It is welded at the top of bar (15) fixed plate (20), the bottom of the fixed plate (20) is bonded with rubber pad by glue, described solid L-type annular groove is offered at the top of fixed board (20), the inner wall of the L-type annular groove is rotatably connected to the connection to match with L-type annular groove Ring (21) extends to the outside of L-type annular groove at the top of the connection ring (21), and is welded with adjustment seat (16), the adjustment seat (16) turn trough is offered at top center, the inner wall of the turn trough is rotatably connected to connecting rod, and the connecting rod is located at turn trough Interior side wall fixing sleeve is connected to first gear, and the inner rotation of the adjustment seat (16) is connected with to be meshed with first gear Two gears (22) are fixedly connected with bull stick at the axle center of the second gear (22), and the top of the bull stick extends to adjustment seat (16) top, and be welded with hexagonal bolt head, the top of the connecting rod is integrally formed with the second threaded rod (18), and described The sidewall thread adjusting of two threaded rods (18) has sleeve (17), and the bottom of the sleeve (17) opens up that there are two symmetrical flexible Hole, the inner top of two telescopic holes are fixedly connected to slide bar, and the side wall of two slide bars slidably connects hollow It manages (19), two hollow tubes (19) are corresponding with telescopic hole, and the bottom of two hollow tubes (19) is and adjustment seat (16) it is fixedly linked at the top of, is welded with vice (9) at the top of the sleeve (17), two first tracks (2) and two The middle position of second track (6) is provided with hoisting mechanism.

2. a kind of steel construction processing platform according to claim 1, it is characterised in that: the hoisting mechanism includes mounting base (8), side wall of four side walls of the mounting base (8) respectively with the first track (2) and the second track (6) mutually welds, the installation The link slot that cross section is T-type is offered at the top center of seat (8), the inner wall of the link slot is rotatably connected to and link slot The connector (23) to match, the top of the connector (23) is integrally formed with turntable (24), the outer circle of the turntable (24) Side wall is provided with the gear teeth, is embedded with the second motor (31) at the top of the mounting base (8), and the top of second motor (31) is solid Surely it is socketed with third gear (30), the third gear (30) is meshed with the gear teeth, welds at the top center of the turntable (24) It is connected to hollow the first fixed link (25), the top that the turntable (24) is located in the first fixed link (25) is fixedly connected with first Motor (26), the output shaft end of the first motor (26) have been fixedly attached winding wheel, the outer circle side wall of the winding wheel around It is connected to wirerope (27), is welded with the second fixed link (4) being laterally arranged at the top of first fixed link (25), described second It is rotatably connected to the first fixed pulley (29) at the inner wall edge of fixed link (4) by shaft, second fixed link (4) is far from the The side of one fixed pulley (29) offers the sliding slot of annular, and the inner wall of the sliding slot slidably connects third fixed link (5), and the Three fixed links (5) are connected with the inside of the second fixed link (4), and the one of the third fixed link (5) separate second fixed link (4) Inner wall is held to be rotatably connected to the second fixed pulley by shaft, the bottom of second fixed link (4) offers and the first fixed link (25) bottom of the first through hole being connected, the third fixed link (5) offers far from one end of the first fixed link (25) Two through-holes, the wirerope (27) pass sequentially through first through hole, the first fixed pulley (29), second far from one end of winding wheel and slide calmly Wheel and the second through-hole, and the outside of third fixed link (5) is extended to, the bottom of second fixed link (4) is fixedly connected with electricity Dynamic push rod (28), the push rod end of the electric pushrod (28) are welded with shifting block, and third fixed link is run through on the top of the shifting block (5), and the inside of the second fixed link (5) is extended to.

3. a kind of steel construction processing platform according to claim 1, it is characterised in that: the middle position of the bottom plate (13) Blanking groove is offered, rotary table corresponding with blanking groove inclined-plane, the bottom of the bottom plate (13) are set as at the top of the bottom plate (13) Portion is fixedly connected with hook, and the two sides that the bottom of the bottom plate (13) is located at blanking groove are welded with symmetrical sliding block, the bottom The bottom of plate (13) is equipped with collection box (32) corresponding with blanking groove, and the side wall top of the collection box (32) is welded with and slides The slide plate that block matches, the collection box (32) are connected by slide plate with the sliding of the inner wall of sliding block.

4. a kind of steel construction processing platform according to claim 1, it is characterised in that: the bottom of the link block is by turning Axis is rotatably connected to the position-limited wheel (10) being laterally arranged, the outer circle side wall of the position-limited wheel (10) and the side wall of the first track (2) It rolls and is connected.

5. a kind of steel construction processing platform according to claim 1, it is characterised in that: the bottom margin of the bottom plate (13) Place is welded with storage tank (12), and the side of the storage tank (12) is rotatably connected to overhead door by hinge.

6. a kind of steel construction processing platform according to claim 2, it is characterised in that: the wirerope (27) is far from winding One end of wheel is fixedly connected with hook.

7. a kind of steel construction processing platform according to claim 2, it is characterised in that: the side of first fixed link (25) The rotation of wall bottom end is socketed with shield (7), and the bottom of the shield (7) passes through the top stationary phase of bolt and mounting base (8) Even, the third gear (30) is located in shield (7).