EPS (Expandable Polystyrene) line positioning frame for building outer wall decoration construction

Abstract

The EPS line positioning frame for building outer wall decoration construction comprises a vertical plate and a wall body, a clamping mechanism is arranged on one side of the vertical plate through a first adjusting mechanism and a second adjusting mechanism, the clamping mechanism comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are both in an L shape, and the first clamping plate and the second clamping plate are arranged on the vertical plate. An EPS line body is clamped between the first clamping plate and the second clamping plate, a mounting groove is formed in one end of the EPS line body, a fixing frame is fixedly mounted on the wall through screws, clamping mechanisms are symmetrically arranged on the same sides of the two ends of the fixing frame, and a positioning rod is mounted in the top end of the fixing frame in an inserted mode. And by arranging the vertical plate and the supporting mechanism, the device can be fixed to the outer wall of the wall, installation and use of the device cannot be affected no matter whether a building or part of a building structure exists on the top of the wall or not, and the application range of the device can be widened.

Description

Technical Field

[0001] The invention relates to the technical field of building exterior wall decoration, in particular to an EPS line positioning frame for building exterior wall decoration construction. Background Art

[0002] EPS lines are new exterior wall decorative lines and components. They are fireproof, non-toxic, and environmentally friendly high-quality decorative building materials. They are suitable for installation on exterior EPS and XPS insulation walls. They are easy to install, economical, and durable.

[0003] The Chinese utility model patent with announcement number CN217299665U proposes an EPS line positioning frame with good stability for building exterior wall decoration construction, including a mounting board, the mounting board is an L-shaped board, the mounting board has an internal cavity structure, a wall clamping mechanism is provided on the mounting board, and an EPS line positioning frame mechanism is installed at the end of the mounting board. The EPS line positioning frame mechanism includes an L-shaped plate installed at the end of the mounting board, and a threaded rod is threaded through the L-shaped plate.

[0004] The above technical solution is to place the mounting plate on the top surface of the wall, and then indirectly clamp the mounting plate to the wall through the designed wall clamping mechanism, so as to pre-position the installed lines in advance; since the mounting plate in this device needs to be installed on the top of the wall, the above device can only be used on the wall surface where there is no other building on the top of the wall. In the prior art, most of the walls are equipped with other buildings or partial building structures on the top, which reduces the scope of application of this device.

[0005] To this end, the present invention discloses an EPS line positioning frame for building exterior wall decoration construction. Summary of the invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an EPS line positioning frame for building exterior wall decoration construction to solve the problems raised in the above-mentioned background technology. The structure of the present invention can fix the device on the outer wall of the wall by setting vertical plates and supporting mechanisms. Whether there is a building or part of the building structure on the top of the wall will not affect the installation and use of the device, which can improve the scope of application of the device.

[0007] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an EPS line positioning frame for building exterior wall decoration construction, comprising a vertical plate and a wall body, one side of the vertical plate is provided with a clamping mechanism through a first adjustment mechanism and a second adjustment mechanism, the clamping mechanism comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are both in the shape of an "L" shape, an EPS line body is clamped between the first clamping plate and the second clamping plate, an installation groove is provided inside one end of the EPS line body, a fixing frame is fixedly installed on the wall body by screws, a clamping mechanism is symmetrically provided on the same side of the two ends of the fixing frame, a positioning rod is plugged and installed inside the top end of the fixing frame, the positioning rod is in the shape of an "L" shape, positioning blocks are fixedly provided at the positions of the positioning rods on both sides of the top of the first clamping plate, the clamping mechanism comprises a V-shaped frame, the V-shaped frame is clamped and installed inside the installation groove, and a supporting mechanism is provided between the bottom end of the vertical plate and the wall body.

[0008] Furthermore, the first adjustment mechanism includes a first slide groove and a lifting plate, the first slide groove is respectively opened inside the two ends of the vertical plate, and a first adjustment screw is rotatably installed inside the first slide groove.

[0009] Furthermore, the first adjusting screw is a bidirectional screw, and knobs are fixedly provided at both ends of the first adjusting screw, and the knobs are provided on the outer side of the vertical plate.

[0010] Furthermore, the lifting plate is limitedly slidably installed inside the first sliding groove, and the lifting plate is screwed to the two ends of the first adjusting screw through the screw holes opened inside it. A first slide plate is slidably arranged inside one end of the lifting plate, and the first slide plate is symmetrically fixed on both sides of one end of the first clamping plate and the second clamping plate.

[0011] Furthermore, second sliding grooves are symmetrically provided inside one end of the first clamping plate and the second clamping plate, and second sliding plates are movably provided on one end of the first clamping plate and the second clamping plate through the second sliding grooves.

[0012] Furthermore, the second adjustment mechanism includes a second adjustment screw, which is threadedly installed inside the vertical plate, arranged on one side of the first adjustment screw, and rotatably arranged on one side of the second slide plate.

[0013] Furthermore, a limit frame is symmetrically arranged on one side of the top of the second clamping plate, and the limit frame includes a cross bar, which is fixedly connected to the top of the second clamping plate, and an arc plate is fixedly arranged at one end of the cross bar, and the arc plate is in contact with one side of the EPS line body, and a rubber pad is fixedly arranged between the arc plate and the EPS line body.

[0014] Furthermore, third sliding grooves are symmetrically opened inside the two ends of the fixed plate, one end of the V-shaped frame is limitedly slidably set inside the third sliding groove, a spring is fixedly installed between the two V-shaped frames at the same end, a fixing hole is opened inside the middle position of the fixed plate, the fixed plate is installed inside the installation groove, and the screws are installed inside the fixing hole and the wall.

[0015] Furthermore, the support mechanism includes an L-shaped frame and a suction cup mechanism, the L-shaped frame is fixedly arranged on one side of the bottom end of the vertical plate, the suction cup mechanism includes a fixing tube, the fixing tube is fixedly installed between the L-shaped frames, and a rubber ring is fixedly arranged on one end of the fixing tube.

[0016] Furthermore, a piston is movably arranged inside one end of the fixed cylinder through a third adjusting screw, the third adjusting screw is threadedly installed inside one end of the fixed cylinder, the piston is rotatably arranged at one end of the third adjusting screw, and exhaust holes are opened inside one end of the fixed cylinder corresponding to both sides of the third adjusting screw.

[0017] Beneficial effects of the present invention: An EPS line positioning frame for building exterior wall decoration construction of the present invention includes a vertical plate, a first adjustment mechanism, a second adjustment mechanism, a first slide groove, a lifting plate, an L-shaped frame, a suction cup mechanism, a first clamping plate, a second clamping plate, an EPS line body, a limit frame, a fixing frame, a positioning block, a first adjusting screw, a first slide plate, a second adjusting screw, a second slide plate, a wall, a fixing cylinder, a rubber ring, a piston, a third adjusting screw, an installation groove, a fixing plate, a fixing hole, a third slide groove, a V-shaped frame, a spring, and a positioning rod.

[0018] 1. The EPS line positioning frame for building exterior wall decoration construction is provided with a vertical plate and a supporting mechanism. By adjusting the piston by the third adjusting screw, a negative pressure is formed inside the fixing cylinder, which is convenient for fixing the vertical plate on the outer wall of the wall through the rubber ring and the fixing cylinder. Whether there is a building or part of the building structure on the top of the wall will not affect the installation and use of the device, which can improve the application scope of the device; and the clamping effect between the first clamping plate and the second clamping plate and the installed EPS line can improve the stability of the device.

[0019] 2. The EPS line positioning frame for building exterior wall decoration construction can rotate and adjust the first adjusting screw through a knob, so as to facilitate the lifting and lowering adjustment of the two upper and lower lifting plates, thereby driving the first clamping plate and the second clamping plate to approach each other through the lifting plate and the first slide plate, so as to facilitate the clamping and fixing of the EPS line body, and support and limit the EPS line body through the limit frame, thereby improving the stability of the EPS line body; the first clamping plate and the second clamping plate can be adjusted laterally through the second adjusting screw and the second slide plate, so as to facilitate the lateral movement of the EPS line body, so that the EPS line body is close to the wall, and the EPS line body is convenient for installation.

[0020] 3. The EPS line positioning frame for building exterior wall decoration construction can position the fixed block and the EPS line body through the positioning rod and positioning block, which is convenient for positioning and installing the EPS line body through the V-shaped frame and other clamping mechanisms and installation grooves, and can improve the installation efficiency and stability of the EPS line body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of an EPS line positioning frame for building exterior wall decoration construction according to the present invention;

[0022] Figure 2 This is a front cross-sectional view of an EPS line positioning frame for building exterior wall decoration construction according to the present invention;

[0023] Figure 3 The invention discloses an EPS line positioning frame for building exterior wall decoration construction. Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a structural diagram of a fixing frame of an EPS line positioning frame for building exterior wall decoration construction according to the present invention;

[0025] Figure 5 This is a structural diagram of the EPS line body of an EPS line positioning frame for building exterior wall decoration construction according to the present invention;

[0026] In the figure: 1. vertical plate; 2. first adjusting mechanism; 3. second adjusting mechanism; 4. first slide; 5. lifting plate; 6. L-shaped frame; 7. suction cup mechanism; 8. first clamping plate; 9. second clamping plate; 10. EPS line body; 11. limit frame; 12. fixing frame; 13. positioning block; 14. first adjusting screw; 15. first slide plate; 16. second adjusting screw; 17. second slide plate; 18. wall; 19. fixing cylinder; 20. rubber ring; 21. piston; 22. third adjusting screw; 23. mounting groove; 24. fixing plate; 25. fixing hole; 26. third slide; 27. V-shaped frame; 28. spring; 29. ​​positioning rod. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 to 5 The present invention provides a technical solution: an EPS line positioning frame for building exterior wall decoration construction, comprising a vertical board 1 and a wall 18, one side of the vertical board 1 is provided with a clamping mechanism through a first adjustment mechanism 2 and a second adjustment mechanism 3, the clamping mechanism comprises a first clamping plate 8 and a second clamping plate 9, the first clamping plate 8 and the second clamping plate 9 are both in an "L" shape, an EPS line body 10 is clamped between the first clamping plate 8 and the second clamping plate 9, an installation groove 23 is provided inside one end of the EPS line body 10, a fixing frame 12 is fixedly installed on the wall 18 by screws, a clamping mechanism is symmetrically provided on the same side of the two ends of the fixing frame 12, and a positioning rod 29 is inserted and installed inside the top of the fixing frame 12, The positioning rod 29 is in an "L" shape, and positioning blocks 13 are fixedly provided on both sides of the top of the first clamping plate 8 at the positions corresponding to the positioning rod 29. The clamping mechanism includes a V-shaped frame 27, and the V-shaped frame 27 is clamped and installed inside the installation groove 23. A supporting mechanism is provided between the bottom end of the vertical plate 1 and the wall 18. The device can be fixed on the outer wall of the wall 18 through the vertical plate 1 and the supporting mechanism. Whether there is a building or a partial building structure on the top of the wall 18 will not affect the fixed installation of the device, nor will it affect the installation of the EPS line body 10. The first clamping plate 8 and the second clamping plate 9 can be provided to clamp and install the EPS line body 10, which is convenient for improving the stability of the EPS line body 10.

[0029] In this embodiment, the first adjusting mechanism 2 includes a first slide groove 4 and a lifting plate 5, the first slide groove 4 is respectively opened inside the two ends of the vertical plate 1, and a first adjusting screw 14 is rotatably installed inside the first slide groove 4, the first adjusting screw 14 is a bidirectional screw, and knobs are fixedly arranged at both ends of the first adjusting screw 14, and the knob is arranged on the outside of the vertical plate 1, the lifting plate 5 is limitedly slidably installed inside the first slide groove 4, and the lifting plate 5 is screwed on the two ends of the first adjusting screw 14 through the screw holes opened inside it, and a first slide plate 15 is slidably arranged inside one end of the lifting plate 5, and the first slide plate 15 is symmetrically fixed on both sides of one end of the first clamping plate 8 and the second clamping plate 9, respectively, and the first adjusting screw 14 is driven to rotate inside the first slide groove 4 by the knob, so as to facilitate the lifting and lowering adjustment of the lifting plate 5, so that the lifting plate 5 drives the first clamping plate 8 and the second clamping plate 9 to approach each other through the first slide plate 15, so as to facilitate the clamping and fixing of the EPS line body 10, and facilitate the subsequent installation of the EPS line body 10.

[0030] In this embodiment, a second slide groove is symmetrically provided inside one end of the first clamping plate 8 and the second clamping plate 9, and a second slide plate 17 is movably provided on one end of the first clamping plate 8 and the second clamping plate 9 through the second slide groove. The second adjustment mechanism 3 includes a second adjustment screw 16, and the second adjustment screw 16 is screwed and installed inside the vertical plate 1. The second adjustment screw 16 is arranged on one side of the first adjustment screw 14, and the second adjustment screw 16 is rotatably arranged on one side of the second slide plate 17. A limit frame 11 is symmetrically provided on one side of the top end of the second clamping plate 9, and the limit frame 11 includes a cross bar, and the cross bar is between the top end of the second clamping plate 9 and the second clamping plate 9. The two EPS line bodies 10 are fixedly connected, and an arc plate is fixedly provided at one end of the cross bar, and the arc plate is in contact with one side of the EPS line body 10, and a rubber pad is fixedly provided between the arc plate and the EPS line body 10, and the second slide plate 17 can be adjusted laterally through the second adjusting screw 16, so that the second slide plate 17 drives the EPS line body 10 to approach the outer wall of the wall 18 through the first clamping plate 8 and the second clamping plate 9, so as to facilitate the installation of the EPS line body 10, and the EPS line body 10 can be limited by the limit frame 11 such as the arc plate, the cross bar and the rubber pad, so as to improve the stability of the EPS line body 10.

[0031] In this embodiment, third slide grooves 26 are symmetrically opened inside the two ends of the fixing plate 24, one end of the V-shaped frame 27 is limitedly slidably set inside the third slide groove 26, a spring 28 is fixedly installed between the two V-shaped frames 27 at the same end, a fixing hole 25 is opened inside the middle position of the fixing plate 24, the fixing plate 24 is installed inside the installation groove 23, the screws are installed in the fixing holes 25 and the wall 18, the V-shaped frame 27 is stuck in the installation groove 23 under the elastic force of the spring 28, and the fixing plate 24 is installed in the installation groove 23, so that the EPS line body 10 can be positioned and installed, and its stability is high.

[0032] In this embodiment, the support mechanism includes an L-shaped frame 6 and a suction cup mechanism 7. The L-shaped frame 6 is fixedly arranged on one side of the bottom end of the vertical plate 1. The suction cup mechanism 7 includes a fixed cylinder 19. The fixed cylinder 19 is fixedly installed between the L-shaped frames 6. A rubber ring 20 is fixedly arranged on one end of the fixed cylinder 19. A piston 21 is movably arranged inside one end of the fixed cylinder 19 through a third adjusting screw 22. The third adjusting screw 22 is threadedly installed inside one end of the fixed cylinder 19. The piston 21 is rotatably arranged at one end of the third adjusting screw 22. Exhaust holes are opened inside one end of the fixed cylinder 19 corresponding to both sides of the third adjusting screw 22. The third adjusting screw 22 drives the piston 21 to move, so that the air inside one end of the fixed cylinder 19 can be discharged, so that the pressure at the end of the fixed cylinder 19 that contacts the wall 18 is reduced, thereby fixing the device to the outside of the wall 18.

[0033] When the EPS line positioning frame for building exterior wall decoration construction is used, the fixing plate 24 is fixed to the installation position of the EPS line body 10 on the outer wall of the wall 18 by screws and fixing holes 25, and the fixing plate 24 is leveled, and the positioning rod 29 is inserted into the top end of the fixing plate 24, and the device is contacted with the outer wall of the wall 18 through the suction cup mechanism 7 such as the rubber ring 20, and the rubber ring 20 is squeezed, and the outer end of the third adjusting screw 22 is fixedly provided with a hand wheel, and the third adjusting screw 22 is rotated and adjusted by the hand wheel, and the third adjusting screw 22 drives the piston 21 to move inside the fixing cylinder 19, and the air inside the right end of the fixing cylinder 19 is discharged through the exhaust hole, and the air pressure inside the right end of the fixing cylinder 19 is The force is reduced, and the suction cup mechanism 7 is fixed on the wall 18 under the action of atmospheric pressure. The device can be fixed on the outside of the wall 18 through the suction cup mechanism 7 and the L-shaped frame 6 and other supporting mechanisms. When installing, the positioning block 13 corresponds to the positioning rod 29, and the EPS line body 10 is placed between the first clamping plate 8 and the second clamping plate 9, and is in close contact with the arc plate and the rubber pad. The knob and the first adjusting screw 14 are turned, and the first adjusting screw 14 drives the lifting plate 5 to slide inside the first slide 4. The lifting plate 5 drives the first clamping plate 8 and the second clamping plate 9 to approach each other through the first slide 15, and the two ends of the second slide 17 slide inside the second slide, which is convenient for the EPS line to be adjusted through the first clamping plate 8 and the second clamping plate 9. The strip body 10 is clamped and fixed, and the second adjusting screw 16 is rotated. The second adjusting screw 16 is screwed and moved inside the vertical plate 1, and the first clamping plate 8 and the second clamping plate 9 are pushed to the wall 18 through the second slide plate 17. The EPS line body 10 drives the installation groove 23 to squeeze the V-frame 27, so that the two V-frames 27 at the same end slide and approach each other through the third slide groove 26. At the same time, the V-frame 27 compresses the spring 28, and the fixing plate 24 and the V-frame 27 enter the interior of the installation groove 23. When the EPS line body 10 and the first clamping plate 8 are fitted with the positioning rod 29, the positioning rod 29 is pulled out, and the first clamping plate 8, the second clamping plate 9 and the EPS line body 10 are continued to be adjusted through the second adjustment mechanism 3. Move so that the fixing plate 24 completely enters the interior of the installation groove 23, and the V-shaped frame 27 is separated from the installation groove 23 and moves in the opposite direction under the elastic force of the spring 28, so that the V-shaped frame 27 is stuck on the top and bottom side walls of the installation groove 23, which is convenient for positioning and installing the EPS line body 10; after installing the first EPS line body 10, the suction cup mechanism 7 is adjusted in the reverse direction to adjust the position of the device, and at the same time, one end of the first EPS line body 10 is set between the first clamping plate 8 and the second clamping plate 9, which can prevent the EPS line body 10 from being deformed. Whether there is a building or a partial building structure on the top of the wall 18 will not affect the installation and use of the device, which can improve the scope of application of the device.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An EPS line positioning frame for building exterior wall decoration construction, comprising a vertical plate (1) and a wall (18), characterized in that: One side of the vertical plate (1) is provided with a clamping mechanism through a first adjustment mechanism (2) and a second adjustment mechanism (3), the clamping mechanism comprising a first clamping plate (8) and a second clamping plate (9), the first clamping plate (8) and the second clamping plate (9) both being in an "L" shape, an EPS line body (10) being clamped between the first clamping plate (8) and the second clamping plate (9), an installation groove (23) being provided inside one end of the EPS line body (10), and a fixing frame (12) being fixedly mounted on the wall (18) by screws , the same side of both ends of the fixing frame (12) is symmetrically provided with a clamping mechanism, a positioning rod (29) is inserted and installed inside the top of the fixing frame (12), and the positioning rod (29) is in an "L" shape, and positioning blocks (13) are fixedly provided at the positions corresponding to the positioning rod (29) on both sides of the top of the first clamping plate (8), and the clamping mechanism includes a V-shaped frame (27), and the V-shaped frame (27) is clamped and installed inside the installation groove (23), and a supporting mechanism is provided between the bottom end of the vertical plate (1) and the wall (18).

2. The EPS line positioning frame for building exterior wall decoration construction according to claim 1 is characterized by: The first adjustment mechanism (2) comprises a first slide groove (4) and a lifting plate (5); the first slide groove (4) is respectively opened inside the two ends of the vertical plate (1); and a first adjustment screw rod (14) is rotatably installed inside the first slide groove (4).

3. The EPS line positioning frame for building exterior wall decoration construction according to claim 2 is characterized by: The first adjusting screw (14) is a bidirectional screw, and knobs are fixedly provided at both ends of the first adjusting screw (14), and the knobs are provided on the outside of the vertical plate (1).

4. The EPS line positioning frame for building exterior wall decoration construction according to claim 3 is characterized by: The lifting plate (5) is limitedly slidably installed inside the first sliding groove (4), and the lifting plate (5) is screwed to the two ends of the first adjusting screw (14) through the screw holes opened inside the lifting plate (5). A first slide plate (15) is slidably arranged inside one end of the lifting plate (5), and the first slide plate (15) is symmetrically fixedly arranged on both sides of one end of the first clamping plate (8) and the second clamping plate (9).

5. The EPS line positioning frame for building exterior wall decoration construction according to claim 1 is characterized by: A second sliding groove is symmetrically provided inside one end of the first clamping plate (8) and the second clamping plate (9), and a second sliding plate (17) is movably provided on one end of the first clamping plate (8) and the second clamping plate (9) through the second sliding groove.

6. The EPS line positioning frame for building exterior wall decoration construction according to claim 5 is characterized by: The second adjustment mechanism (3) comprises a second adjustment screw (16), the second adjustment screw (16) is threadedly mounted inside the vertical plate (1), the second adjustment screw (16) is arranged on one side of the first adjustment screw (14), and the second adjustment screw (16) is rotatably arranged on one side of the second slide plate (17).

7. The EPS line positioning frame for building exterior wall decoration construction according to claim 6 is characterized by: A limiting frame (11) is symmetrically arranged on one side of the top of the second clamping plate (9), and the limiting frame (11) includes a cross bar, and the cross bar is fixedly connected to the top of the second clamping plate (9), and an arc plate is fixedly arranged at one end of the cross bar, and the arc plate is in contact with one side of the EPS line body (10), and a rubber pad is fixedly arranged between the arc plate and the EPS line body (10).

8. The EPS line positioning frame for building exterior wall decoration construction according to claim 1 is characterized by: The third sliding grooves (26) are symmetrically provided inside the two ends of the fixing plate (24), one end of the V-shaped frame (27) is limitedly slidably arranged inside the third sliding groove (26), a spring (28) is fixedly installed between the two V-shaped frames (27) at the same end, a fixing hole (25) is provided inside the middle position of the fixing plate (24), the fixing plate (24) is installed inside the installation groove (23), and the screws are installed inside the fixing hole (25) and the wall (18).

9. The EPS line positioning frame for building exterior wall decoration construction according to claim 1 is characterized by: The support mechanism comprises an L-shaped frame (6) and a suction cup mechanism (7), wherein the L-shaped frame (6) is fixedly arranged on one side of the bottom end of the vertical plate (1), and the suction cup mechanism (7) comprises a fixing cylinder (19), wherein the fixing cylinder (19) is fixedly installed between the L-shaped frame (6), and a rubber ring (20) is fixedly arranged on one end of the fixing cylinder (19).

10. The EPS line positioning frame for building exterior wall decoration construction according to claim 9 is characterized by: A piston (21) is movably arranged inside one end of the fixed cylinder (19) via a third adjusting screw (22); the third adjusting screw (22) is threadedly mounted inside one end of the fixed cylinder (19); the piston (21) is rotatably arranged on one end of the third adjusting screw (22); exhaust holes are opened inside one end of the fixed cylinder (19) at two sides corresponding to the third adjusting screw (22).

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