CN215659929U

CN215659929U - Positioning fixture for assembling high-efficiency energy-saving three-phase asynchronous motor

Info

Publication number: CN215659929U
Application number: CN202121789952.8U
Authority: CN
Inventors: 于金亮
Original assignee: Shandong Ruibo Motor Co ltd
Current assignee: Shandong Ruibo Motor Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-28
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a positioning clamp for assembling a high-efficiency energy-saving three-phase asynchronous motor, which improves the stability of equipment; the convenience of the equipment is improved; the motor cover comprises a motor, a cover and a plurality of bolts, wherein a plurality of auxiliary holes are formed in the upper end of the motor, the cover covers the upper end of the motor, a plurality of mounting holes are formed in the cover, and the bolts are respectively mounted in the mounting holes in the cover; still including installation storehouse, bull stick, base, two curb plates, the back timber, a plurality of auxiliary fixtures, two anchor clamps and supplementary installation device, be provided with the die cavity in the installation storehouse, the upper end in installation storehouse is provided with the opening and makes inside die cavity and external intercommunication, the bull stick is installed to the lower extreme in installation storehouse, the bull stick passes through the bearing and installs the upper end at the base, the motor is located the die cavity in installation storehouse, install a plurality of auxiliary fixtures on the die cavity lateral wall in installation storehouse, the curb plate is installed respectively to the upper end both sides of base.

Description

Positioning fixture for assembling high-efficiency energy-saving three-phase asynchronous motor

Technical Field

The utility model relates to the technical field of mechanical equipment, in particular to a positioning clamp for assembling a high-efficiency energy-saving three-phase asynchronous motor.

Background

The positioning clamp for assembling the motor is an auxiliary device for positioning and clamping a three-phase asynchronous motor during assembling, and is widely used in the field of mechanical equipment; the existing positioning clamp for assembling the motor comprises the motor, a cover and a plurality of bolts, wherein a plurality of auxiliary holes are formed in the upper end of the motor, the cover covers the upper end of the motor, a plurality of mounting holes are formed in the cover, and the bolts are respectively mounted in the mounting holes in the cover; when the existing positioning clamp for assembling the motor is used, firstly, a cover is covered at the upper end of the motor, the mounting hole of the cover is aligned with the auxiliary hole at the upper end of the motor, a plurality of bolts are respectively placed in a plurality of mounting holes on the cover, then, a tool is used for rotating the bolts, so that the motor and the cover are assembled and fixed, and the motor and the cover can be assembled and fixed; the existing positioning clamp for motor assembly is used for finding that the positions of the motor and the cover are difficult to align when the motor and the cover are assembled and fixed by using a conventional tool, so that the assembly efficiency of the device is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a method for improving the use stability of equipment; the positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor improves the convenience of equipment use.

The utility model discloses a positioning clamp for assembling a high-efficiency energy-saving three-phase asynchronous motor, which comprises a motor, a cover and a plurality of bolts, wherein the upper end of the motor is provided with a plurality of auxiliary holes; still including the installation storehouse, the bull stick, a pedestal, two curb plates, the back timber, a plurality of auxiliary fixtures, two anchor clamps and supplementary installation device, be provided with the die cavity in the installation storehouse, the upper end in installation storehouse is provided with the opening and makes inside die cavity and external intercommunication, the bull stick is installed to the lower extreme in installation storehouse, the bull stick passes through the bearing and installs the upper end at the base, the motor is located the die cavity in installation storehouse, install a plurality of auxiliary fixtures on the die cavity lateral wall in installation storehouse, the curb plate is installed respectively to the upper end both sides of base, the side of two curb plates is provided with the slide rail groove respectively, two anchor clamps are installed respectively at two slide rail inslots, two anchor clamps carry out the centre gripping fixedly to the lid, the back timber is installed to the upper end of two curb plates, supplementary installation device is installed to the lower extreme of back timber.

The auxiliary clamp comprises a moving rod, a pressing block, a limiting plate and a plurality of springs, wherein the moving rod penetrates through the cavity wall of the mounting bin, the moving rod can stretch out and draw back on the cavity wall of the mounting bin, the pressing block is mounted at the side end of the moving rod, the pressing block is located in the cavity of the mounting bin, the limiting plate is mounted at the other end of the moving rod, and the limiting plate is connected with the outer wall of the mounting bin through the plurality of springs.

The utility model discloses a high-efficiency energy-saving positioning clamp for assembling a three-phase asynchronous motor, which comprises a sliding block, a first hydraulic cylinder, two first auxiliary plates, a telescopic rod and a fixing block, wherein the sliding block slides in a sliding rail groove, the first hydraulic cylinder and the two first auxiliary plates are arranged at the side end of the sliding block, the first hydraulic cylinder is arranged between the two first auxiliary plates, the telescopic rod is arranged at the output end of the first hydraulic cylinder, the fixing block is arranged at the side end of the telescopic rod, and the fixing block is close to the outer end of a cover.

The utility model relates to a positioning fixture for assembling a high-efficiency energy-saving three-phase asynchronous motor, wherein an auxiliary mounting device comprises a second hydraulic cylinder, two second auxiliary plates, a lifting plate, two connecting plates, a mounting plate, a plurality of rotating rods, a plurality of first driving wheels, a second driving wheel and a first motor, the second hydraulic cylinder is mounted at the lower end of a top beam, the two second auxiliary plates are mounted at the lower end of the top beam, the second hydraulic cylinder is positioned between the two second auxiliary plates, the lifting plate is mounted at the output end of the second hydraulic cylinder, the two connecting plates are mounted at the lower end of the lifting plate, the mounting plate is mounted at the lower ends of the two connecting plates, the plurality of rotating rods are mounted on the mounting plate through bearings, the plurality of rotating rods correspond to a plurality of bolts, the first driving wheels are respectively mounted at the upper ends of the plurality of rotating rods, the plurality of first driving wheels are in meshing transmission with the second driving wheels, and the second driving wheels are mounted at the output end of the first motor, the first motor is installed between the two connecting plates.

The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor further comprises a second motor, a first meshing wheel and a second meshing wheel, wherein the second motor is arranged at the upper end of the base, the first meshing wheel is arranged at the output end of the second motor, the first meshing wheel and the second meshing wheel are in meshing transmission, and the second meshing wheel is arranged on the rotating rod.

The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor further comprises two third motors, two screw rods and two fixing plates, wherein the two third motors are respectively installed at the side ends of the two side plates, the screw rods are respectively installed at the output ends of the two third motors, threaded holes are respectively formed in the two sliding blocks, the two screw rods are respectively installed in the threaded holes of the two sliding blocks, the other ends of the two installing plates are respectively installed on the two fixing plates through bearings, and the two fixing plates are respectively installed at the side ends of the two side plates.

Compared with the prior art, the utility model has the beneficial effects that: place the motor in the die cavity in installation storehouse, fix the motor through a plurality of supplementary anchor clamps, rotate the bull stick, the rotation of bull stick drives the rotation of installation storehouse, the rotation of installation storehouse drives the rotation of motor, the rotation of motor makes the auxiliary hole of motor upper end aim at with the mounting hole position of lid, two anchor clamps press from both sides tight fixedly to the lid, two anchor clamps remove at the slide rail inslot, thereby make motor and lid press close to, start supplementary installation device simultaneously, effect through a plurality of bolts makes motor and lid assemble fixedly under supplementary installation device's effect, the stability and the convenience of equipment use have been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a part of an enlarged structure of the device for mounting the cartridge and the auxiliary clamp;

FIG. 3 is an enlarged schematic view of the auxiliary mounting device;

reference numerals: 1. an electric motor; 2. a cover; 3. a bolt; 4. installing a bin; 5. a rotating rod; 6. a base; 7. a side plate; 8. a slide rail groove; 9. a top beam; 10. a travel bar; 11. briquetting; 12. a limiting plate; 13. a spring; 14. a slider; 15. a first hydraulic cylinder; 16. a first auxiliary plate; 17. a telescopic rod; 18. a fixed block; 19. a second hydraulic cylinder; 20. a second auxiliary plate; 21. a lifting plate; 22. a connecting plate; 23. mounting a plate; 24. rotating the rod; 25. a first drive pulley; 26. a second transmission wheel; 27. a first motor; 28. a second motor; 29. a first meshing wheel; 30. a second meshing wheel; 31. a third motor; 32. a screw; 33. and (7) fixing the plate.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, the positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor comprises a motor 1, a cover 2 and a plurality of bolts 3, wherein a plurality of auxiliary holes are formed in the upper end of the motor 1, the cover 2 covers the upper end of the motor 1, a plurality of mounting holes are formed in the cover 2, and the bolts 3 are respectively mounted in the mounting holes in the cover 2; the device comprises a mounting bin 4, a rotating rod 5, a base 6, two side plates 7, a top beam 9, a plurality of auxiliary fixtures, two fixtures and an auxiliary mounting device, wherein a cavity is formed in the mounting bin 4, an opening is formed in the upper end of the mounting bin 4 to enable the internal cavity to be communicated with the outside, the rotating rod 5 is mounted at the lower end of the mounting bin 4, the rotating rod 5 is mounted at the upper end of the base 6 through a bearing, a motor 1 is located in the cavity of the mounting bin 4, the auxiliary fixtures are mounted on the side wall of the cavity of the mounting bin 4, the side plates 7 are mounted on two sides of the upper end of the base 6 respectively, slide rail grooves 8 are formed in the side ends of the two side plates 7 respectively, the two fixtures are mounted in the two slide rail grooves 8 respectively, the two fixtures clamp fix a cover 2 in a clamping manner, the top beam 9 is mounted at the upper ends of the two side plates 7, and the auxiliary mounting device is mounted at the lower end of the top beam 9; place motor 1 in the die cavity of installation storehouse 4, fix motor 1 through a plurality of supplementary anchor clamps, rotate bull stick 5, the rotation of bull stick 5 drives the rotation of installation storehouse 4, the rotation of installation storehouse 4 drives the rotation of motor 1, the rotation of motor 1 makes the auxiliary hole of motor 1 upper end aim at with the mounting hole position of lid 2, two anchor clamps press from both sides tight fixedly to lid 2, two anchor clamps move in slide rail groove 8, thereby make motor 1 and lid 2 press close to, start supplementary installation device simultaneously, make motor 1 and lid 2 assemble fixedly through the effect of a plurality of bolts 3 under supplementary installation device's effect, the stability and the convenience of equipment use have been improved.

The utility model relates to a positioning fixture for assembling a high-efficiency energy-saving three-phase asynchronous motor, which comprises a movable rod 10, a pressing block 11, a limiting plate 12 and a plurality of springs 13, wherein the movable rod 10 penetrates through the cavity wall of an installation bin 4, the movable rod 10 can stretch out and draw back on the cavity wall of the installation bin 4, the pressing block 11 is installed at the side end of the movable rod 10, the pressing block 11 is positioned in the cavity of the installation bin 4, the limiting plate 12 is installed at the other end of the movable rod 10, and the limiting plate 12 is connected with the outer wall of the installation bin 4 through the springs 13; exert the pulling force to limiting plate 12 under the synergism of a plurality of springs 13, limiting plate 12 exerts pressure through carriage release lever 10 to briquetting 11 under the effect of pulling force, and briquetting 11 is pressed in motor 1's outer end, thereby presses through a plurality of briquetting 11 and makes motor 1 carry out supplementary stability in motor 1's outer end, makes motor 1 more stable when installing storehouse 4 and rotate, has improved the stability of equipment use.

The utility model relates to a positioning clamp for assembling a high-efficiency energy-saving three-phase asynchronous motor, which comprises a slide block 14, a first hydraulic cylinder 15, two first auxiliary plates 16, an expansion link 17 and a fixed block 18, wherein the slide block 14 slides in a slide rail groove 8, the first hydraulic cylinder 15 and the two first auxiliary plates 16 are installed at the side end of the slide block 14, the first hydraulic cylinder 15 is installed between the two first auxiliary plates 16, the expansion link 17 is installed at the output end of the first hydraulic cylinder 15, the fixed block 18 is installed at the side end of the expansion link 17, and the fixed block 18 is close to the outer end of a cover 2; start first pneumatic cylinder 15, the output of first pneumatic cylinder 15 drives the flexible of telescopic link 17, and the flexible of telescopic link 17 is pressed fixed block 18 in the outer end of lid 2, presss from both sides tight fixedly to lid 2 through the additional action of two fixed blocks 18, and the slider 14 slides the removal that drives first pneumatic cylinder 15 of slider 14 to make lid 2 go up and down, improved the convenience of equipment use.

The utility model relates to a positioning fixture for assembling a high-efficiency energy-saving three-phase asynchronous motor, wherein an auxiliary mounting device comprises a second hydraulic cylinder 19, two second auxiliary plates 20, a lifting plate 21, two connecting plates 22, a mounting plate 23, a plurality of rotating rods 24, a plurality of first driving wheels 25, a second driving wheel 26 and a first motor 27, the second hydraulic cylinder 19 is mounted at the lower end of a top beam 9, the two second auxiliary plates 20 are mounted at the lower end of the top beam 9, the second hydraulic cylinder 19 is positioned between the two second auxiliary plates 20, the lifting plate 21 is mounted at the output end of the second hydraulic cylinder 19, the two connecting plates 22 are mounted at the lower end of the lifting plate 21, the mounting plate 23 is mounted at the lower ends of the two connecting plates 22, the plurality of rotating rods 24 are mounted on the mounting plate 23 through bearings, the plurality of rotating rods 24 correspond to the plurality of bolts 3, the first driving wheels 25 are respectively mounted at the upper ends of the plurality of rotating rods 24, the plurality of first driving wheels 25 are in meshing transmission with second driving wheels 26, the second driving wheels 26 are arranged at the output ends of first motors 27, and the first motors 27 are arranged between the two connecting plates 22; after motor 1 and lid 2 position alignment, start second hydraulic cylinder 19, the output of second hydraulic cylinder 19 drives the lift of lifter plate 21, the lift of lifter plate 21 drives the lift of a plurality of dwang 24 through two connecting plates 22 and mounting panel 23, a plurality of bolts 3 are pressed close to a plurality of dwang 24, start first motor 27, the output of first motor 27 drives the rotation of second drive wheel 26, the rotation of second drive wheel 26 drives the rotation of a plurality of first drive wheels 25 through the meshing transmission, the rotation of a plurality of first drive wheels 25 drives the rotation of a plurality of dwang 24 respectively, the rotation of a plurality of dwang 24 is changeed tightly to a plurality of bolts 3, the convenience of equipment use has been improved.

The positioning clamp for assembling the high-efficiency energy-saving three-phase asynchronous motor further comprises a second motor 28, a first meshing wheel 29 and a second meshing wheel 30, wherein the second motor 28 is arranged at the upper end of the base 6, the first meshing wheel 29 is arranged at the output end of the second motor 28, the first meshing wheel 29 and the second meshing wheel 30 are in meshing transmission, and the second meshing wheel 30 is arranged on the rotating rod 5; the second motor 28 is started, the output end of the second motor 28 drives the first meshing wheel 29 to rotate, the first meshing wheel 29 rotates to drive the second meshing wheel 30 to rotate through meshing transmission, the second meshing wheel 30 rotates to drive the rotating rod 5 to rotate, power is provided for the rotating rod 5 to rotate through the second motor 28, the rotating rod 5 is enabled to rotate more stably and controllably, and the use stability and controllability of the equipment are improved.

The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor further comprises two third motors 31, two screw rods 32 and two fixing plates 33, wherein the two third motors 31 are respectively installed at the side ends of the two side plates 7, the screw rods 32 are respectively installed at the output ends of the two third motors 31, threaded holes are respectively formed in the two sliding blocks 14, the two screw rods 32 are respectively installed in the threaded holes of the two sliding blocks 14, the other ends of the two installing plates 23 are respectively installed on the two fixing plates 33 through bearings, and the two fixing plates 33 are respectively installed at the side ends of the two side plates 7; the third motor 31 is started, the output end of the third motor 31 drives the screw rod 32 to rotate, the screw rod 32 rotates to drive the sliding block 14 to move through thread matching, power is provided for the sliding block 14 to move through the third motor 31, the sliding block 14 is enabled to move more stably and controllably, and the use stability and controllability of the equipment are improved.

The utility model relates to a positioning clamp for assembling a high-efficiency energy-saving three-phase asynchronous motor, which is characterized in that when in work, a first hydraulic cylinder 15 is started, the output end of the first hydraulic cylinder 15 drives an expansion rod 17 to expand, the expansion rod 17 expands to press a fixing block 18 at the outer end of a cover 2, the cover 2 is clamped and fixed through the auxiliary action of two fixing blocks 18, a motor 1 is placed in a cavity of an installation bin 4, the motor 1 is fixed through a plurality of auxiliary clamps, a second motor 28 is started, the output end of the second motor 28 drives a first engaging wheel 29 to rotate, the rotation of the first engaging wheel 29 drives a second engaging wheel 30 to rotate through engaging transmission, the rotation of the second engaging wheel 30 drives a rotating rod 5 to rotate, the rotation of the installation bin 4 is driven by the rotation of the installation bin 4, the rotation of the motor 1 enables an auxiliary hole at the upper end of the motor 1 to be aligned with the installation hole of the cover 2 through the rotation of the motor 1, then the third motor 31 is started, the output end of the third motor 31 drives the screw rod 32 to rotate, the rotation of the screw rod 32 drives the slide block 14 to move through screw thread fit, the slide block 14 drives the first hydraulic cylinder 15 to move, thereby the cover 2 is lifted, when the motor 1 and the cover 2 are aligned, the second hydraulic cylinder 19 is started, the output end of the second hydraulic cylinder 19 drives the lifting plate 21 to lift, the lifting plate 21 lifts the plurality of rotating rods 24 through the two connecting plates 22 and the mounting plate 23, the plurality of rotating rods 24 are close to the plurality of bolts 3, the first motor 27 is started, the output end of the first motor 27 drives the second transmission wheel 26 to rotate, the rotation of the second transmission wheel 26 drives the plurality of first transmission wheels 25 to rotate through meshing transmission, the rotation of the plurality of first transmission wheels 25 respectively drives the plurality of rotating rods 24 to rotate, the plurality of rotating rods 24 tightly rotate the plurality of bolts 3, the motor 1 and the cover 2 are assembled.

According to the positioning clamp for assembling the high-efficiency energy-saving three-phase asynchronous motor, the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the positioning clamp can be implemented as long as the beneficial effects of the positioning clamp can be achieved; the spring 13, the first hydraulic cylinder 15, the second hydraulic cylinder 19, the second motor 28 and the third motor 31 of the positioning clamp for assembling the high-efficiency energy-saving three-phase asynchronous motor are purchased from the market, and technicians in the industry only need to install and operate according to the attached operating instructions.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A positioning fixture for assembling a high-efficiency energy-saving three-phase asynchronous motor comprises a motor (1), a cover (2) and a plurality of bolts (3), wherein a plurality of auxiliary holes are formed in the upper end of the motor (1), the cover (2) covers the upper end of the motor (1), a plurality of mounting holes are formed in the cover (2), and the bolts (3) are respectively mounted in the mounting holes in the cover (2); the device is characterized by further comprising an installation bin (4), a rotating rod (5), a base (6), two side plates (7), a top beam (9), a plurality of auxiliary fixtures, two fixtures and an auxiliary installation device, wherein a cavity is arranged in the installation bin (4), an opening is formed in the upper end of the installation bin (4) to enable the internal cavity to be communicated with the outside, the rotating rod (5) is installed at the lower end of the installation bin (4), the rotating rod (5) is installed at the upper end of the base (6) through a bearing, a motor (1) is located in the cavity of the installation bin (4), the side walls of the cavity of the installation bin (4) are provided with the auxiliary fixtures, the side plates (7) are respectively installed on two sides of the upper end of the base (6), the side ends of the two side plates (7) are respectively provided with a sliding rail groove (8), the two fixtures are respectively installed in the two sliding rail grooves (8), and the two fixtures are used for clamping and fixing the cover (2), the upper ends of the two side plates (7) are provided with top beams (9), and the lower ends of the top beams (9) are provided with auxiliary mounting devices.

2. The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor according to claim 1, wherein the auxiliary fixture comprises a moving rod (10), a pressing block (11), a limiting plate (12) and a plurality of springs (13), the moving rod (10) penetrates through the cavity wall of the installation bin (4), the moving rod (10) can extend and retract on the cavity wall of the installation bin (4), the pressing block (11) is installed at the side end of the moving rod (10), the pressing block (11) is located in the cavity of the installation bin (4), the limiting plate (12) is installed at the other end of the moving rod (10), and the limiting plate (12) is connected with the outer wall of the installation bin (4) through the plurality of springs (13).

3. The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor according to claim 1, wherein the fixture comprises a sliding block (14), a first hydraulic cylinder (15), two first auxiliary plates (16), an expansion link (17) and a fixed block (18), the sliding block (14) slides in the sliding rail groove (8), the first hydraulic cylinder (15) and the two first auxiliary plates (16) are installed at the side end of the sliding block (14), the first hydraulic cylinder (15) is installed between the two first auxiliary plates (16), the expansion link (17) is installed at the output end of the first hydraulic cylinder (15), the fixed block (18) is installed at the side end of the expansion link (17), and the fixed block (18) is close to the outer end of the cover (2).

4. The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor according to claim 1, wherein the auxiliary mounting device comprises a second hydraulic cylinder (19), two second auxiliary plates (20), a lifting plate (21), two connecting plates (22), a mounting plate (23), a plurality of rotating rods (24), a plurality of first driving wheels (25), a second driving wheel (26) and a first motor (27), the second hydraulic cylinder (19) is mounted at the lower end of the top beam (9), the two second auxiliary plates (20) are mounted at the lower end of the top beam (9), the second hydraulic cylinder (19) is located between the two second auxiliary plates (20), the lifting plate (21) is mounted at the output end of the second hydraulic cylinder (19), the two connecting plates (22) are mounted at the lower end of the lifting plate (21), the mounting plate (23) is mounted at the lower ends of the two connecting plates (22), a plurality of dwang (24) pass through the bearing and install on mounting panel (23), a plurality of dwang (24) correspond each other with a plurality of bolt (3), first drive wheel (25) are installed respectively to the upper end of a plurality of dwang (24), a plurality of first drive wheel (25) carry out the meshing transmission with second drive wheel (26), the output at first motor (27) is installed in second drive wheel (26), first motor (27) are installed between two connecting plates (22).

5. The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor as claimed in claim 1, further comprising a second motor (28), a first engaging wheel (29) and a second engaging wheel (30), wherein the second motor (28) is installed at the upper end of the base (6), the first engaging wheel (29) is installed at the output end of the second motor (28), the first engaging wheel (29) and the second engaging wheel (30) are in engaged transmission, and the second engaging wheel (30) is installed on the rotating rod (5).

6. The positioning fixture for assembling the high-efficiency energy-saving three-phase asynchronous motor according to claim 3, further comprising two third motors (31), two screws (32) and two fixing plates (33), wherein the two third motors (31) are respectively installed at the side ends of the two side plates (7), the screws (32) are respectively installed at the output ends of the two third motors (31), the two sliders (14) are respectively provided with a threaded hole, the two screws (32) are respectively installed in the threaded holes of the two sliders (14), the other ends of the two mounting plates (23) are respectively installed on the two fixing plates (33) through bearings, and the two fixing plates (33) are respectively installed at the side ends of the two side plates (7).