JPH05133406A - Pressure medium cylinder with cylinder pipe with longitudinal slit - Google Patents

Abstract

PURPOSE: To realize smoother sliding guide by improving a sliding guide structure of a force releasing member covering an interlocking body in a structure wherein a slit is formed in one side of a cylinder pipe and the interlocking body is connected to a piston via a connecting means through the slit. CONSTITUTION: A cylinder pipe 1 with a piston 3 mounted therein is shaped to a configuration having a substantially square cross section. A slit 10 extending in parallel with a cylinder axis is formed in one wall 8 of the cylinder pipe 1. An interlocking body 17 is connected to the piston 3 via a web-like connecting means 16 passing through the slip 10. The interlocking body 17 is covered by a U-shaped force releasing member 18, and the member 18 is freely guided in the axial direction along the cylinder pipe 1 by a guide device. Further, the slit 10 is fluid-tightly covered with a seal belt 19 inside the cylinder pipe and simultaneously covered with a cover belt 21 outside the cylinder pipe. The guide device is composed of guide pieces 35, 36 along guide tracks formed on both sides of the slit 10, and the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure medium cylinder having a cylinder tube which has a longitudinal slit and is closed on the end side, the cylinder tube being on the slit side with respect to the slit. Is restricted by a right-angled outer surface, and the piston is slidably guided in the cylinder tube by means of two piston packings arranged near the ends thereof, the piston packing In the region between the two, a coupling means penetrating through the slit is used to rigidly connect with the entrainment located in front of the slit on the outside of the cylinder tube and inside the cylinder tube of the section closed by both piston packings. There is a seal belt that covers the slits in a pressure-tight manner on the outside, and the slits are joined on the outside. A cover belt is provided to cover the penetrating area of the cylinder tube, and a force emitting member that is guided so as to be slidable in the axial direction along the outer side of the cylinder pipe is provided. On the opposite side and on the side, in which case guides of the force-releasing member, which extend through the slit and are symmetrically arranged about the central plane containing the cylinder axis, are provided on both sides of the slit. , Each having two flat guide tracks that extend at an angle to each other and are parallel to each other, the guide tracks being adjustable to one guide groove arranged in the cylinder tube and the force-releasing member A guide strip arranged in each case, and between the driver and the force-releasing member between the driver and the force-releasing member with limited lateral and rotational movability. Transmit axial force at About of the type forming apparatus is located.

[0002]

2. Description of the Related Art European Patent Application Publication No. 157892
In a pressure medium cylinder of the type mentioned above, which is known from U.S. Pat.
It is constructed as described in the German patent application DE 31 24 915 or European patent application publication no. In this guide, as described in DE-A 31 24 915 or EP-A-680 88, the force-releasing member is at least partially on the side of the cylinder tube and a wedge-shaped guide on that side. In the range where the groove is integrally formed, it covers. The force-emitting member has a guide strip which engages the wedge-shaped groove with a correspondingly arranged roof-shaped guide surface. The guide strip can be adjusted perpendicularly to the central plane by means of an adjusting screw arranged on the force emitting member at right angles to the central plane. With this configuration of the guide of the force-releasing member, it is desired to prevent the expansion of the cylinder tube caused by the pressure medium load. However, this problem can hardly be solved by the guidance given above. This is because when the cylinder tube expands and presses against the guide strip, the force-releasing member is caught on the cylinder tube and becomes almost immovable. According to EP-A-157,892, the guide is therefore designed in such a way that it must have some play for a smooth movement. This degree of play must obviously be present at the maximum pressure medium impact of the pressure medium cylinder and thus also at the maximum expansion of the cylinder tube, and this play can be adjusted by means of adjusting screws. .. In the case of a slight pressure medium impact, the cylinder tube contracts again with the width of the slit narrowing, so that in such a slight or no pressure medium impact, a correspondingly large play is present. That is, the force-releasing member is no longer correctly guided. Furthermore, in order to carry out a precise guidance, the guide strips must be movably guided in the force emitting member in a direction perpendicular to the central plane. That is, this guide requires a sliding guide with play of the guide strip in a direction parallel to the central plane within the groove of the force-ejecting member which houses the guide. This sliding guide play, which impairs the precision of the guidance of the force-releasing member, cannot be influenced by the adjusting screw, so that this sliding guide play cannot be adjusted and depends exclusively on manufacturing errors and wear.

This known pressure medium cylinder also has
There is a risk that the adjusting screw may be used to erroneously adjust the play to some extent in the pressureless cylinder. In such a case, this certain amount of play is immediately consumed when the pressure medium is loaded, and when the load of the pressure medium is further increased, the force release member is pressed against the cylinder pipe by crimping the guide groove to the guide strip. Will be caught and result in failure of the pressure medium cylinder. In addition to the possibility of misalignment mentioned above, this guidance further increases the risk of misalignment if the guide has a very large play. That is, starting from this extremely large play, if only one guide strip is misadjusted using only the adjusting screw arranged on one side, the force emitting member is misadjusted in the direction perpendicular to the center plane. The driver, which is shifted towards the side of the guide strip and is designed as a web which is engaged through the slit, comes into contact with the slit wall, whereby excessive play is eliminated. It is regarded as a thing, and the force emission member is mistakenly regarded as being correctly adjusted. Such a misalignment of the pressure medium cylinder can lead to immediate damage to the pressure medium cylinder. Such misalignment can also occur in pressure medium cylinders with the same guide, as described in EP-A-157,892. This is because lateral sliding between the driver and the force-discharging element is not possible with the coupling device disclosed in this specification. Therefore, when the force-releasing member slides in the lateral direction, the entrainment body is entrained, and the web-like coupling means of the entrainment body is pressed against the side wall of the slit.

Other drawbacks of this known guide include: That is, as often occurs in actual cylinder operation, when the force emitting member is subjected to a vertical load, that is, when the force emitting member is extended by the force extending in the center plane and perpendicular to the cylinder axis, When loaded, the forces are transmitted to the cylinder tubes via the guide tracks which are arranged in a wedge shape with respect to each other, and thereby the force is transmitted to the virtual guide track which extends at right angles to the force direction. In comparison, an increased force corresponding to the wedge angle will be transmitted with increased friction and wear.

In order to enable lateral slidability between the driver and the force-releasing member with the advantages obtained thereby, a mating key extending laterally between the driver and the force-releasing member. It is proposed by the patent application of the same year to arrange the as a coupling device.

According to EP-A-234033 and EP-A-280309, a force-releasing member is arranged on the side of the cylinder tube and is supported on the cylinder tube along its length. It is known to guide with guide rods of circular cross section which are held in the cylinder tube either at the end or only at the ends. However, in this case, the guide rod is an additional component that adds to the cost of the pressure medium cylinder and requires a larger installation space. This is because the force-releasing member must cover the sides of the guide rod and be correspondingly wide. Furthermore, with this known guide, there is a risk of the force-releasing member being caught when the cylinder tube expands under the load of the pressure medium.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is therefore to provide a pressure-medium cylinder of the type mentioned at the outset in a simple manner as follows, that is to say in order to eliminate the abovementioned disadvantages, in particular force ejection. The entire play in the guide of the member is adjustable, that is, there is no partial play that cannot be adjusted, and the force-releasing member is caught by the expansion of the cylinder tube, and unrecognizable misadjustment with adverse consequences. Is avoided, and advantageous force transmission is achieved when a vertical force is applied to the force emitting member.
It is to configure.

[0008]

SUMMARY OF THE INVENTION In order to solve this problem, the invention provides a pressure medium cylinder of the type mentioned at the beginning, in which the guides of the force-releasing member are located inside the guide groove on both sides of the slit. Has a guide track of the other, and has the other guide track on the outer surface, in which case one guide track is non-adjustable and extends at an angle to the center plane, and the other guide track is A guide strip extending parallel to the outer surface and adjustable in a direction perpendicular to the outer surface.

[0009]

In the known pressure-medium cylinder, as already mentioned, the adjusting strips are used to adjust the guide strips so that they can be moved laterally with respect to the central plane in the force-emitting element. You must be informed. The laterally slidable guidance of the guide strip requires a play between the guide strip and the force-releasing member, which play cannot be adjusted by the adjusting screw. On the other hand, in the configuration of the pressure medium cylinder according to the invention, the guide play of the guide strip in the force-releasing member, which acts transversely to the central plane, influences the play of the force-releasing member with respect to the cylinder tube. Without any play between them can be adjusted.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

As shown in FIGS. 1 to 3, the pressure medium cylinder has a cylinder tube 1, which is closed at its end by a cylinder cover 2. The cylinder cover 2 also serves to supply pressure medium to the load chambers 4, 5 located on both sides of the piston 3.
The cylinder tube 1 has an outer shape of a substantially square cross section and comprises an eccentrically arranged cylinder hole 6 for guiding the piston 3. A plurality of holding / guide grooves 7 are integrally formed on the outer wall of the cylinder hole 1. Cylinder wall 8 of cylinder tube 1 positioned in the direction of displacement of cylinder hole 6.
Is cut by a slit 10 extending parallel to the cylinder axis 9.

The cylinder tube 1 has an outer surface 11 on the side of the slit 10 and one side surface 12; 13 on the side, which is connected to this outer surface. A central plane 14 extends through the centers of the cylinder axis 9 and the slit 10.

The piston 3 is constructed to extend in a relatively long direction in the axial direction, and the load chambers 4 and 5 are provided in the vicinity of both ends thereof.
Each of them has one piston packing 15 for limiting. In the area between the two piston packings 15, the piston 3 has a web-like coupling means 16 which penetrates the slit 10 and positions the piston 3 outside the cylinder tube in front of the slit 10. Carrying body 1
It is firmly connected with the 7. The driver 17 is covered on the side facing away from the slit by a U-shaped force-releasing member 18 on the side, which is arranged on both sides of the slit 10 by means of a guide device, which will be explained in more detail below. It is guided along the tube 1 so as to be slidable in the axial direction.

The slit 10 is pressure-tightly covered with a seal belt 19 in the region of the load chambers 4 and 5 inside the cylinder tube, that is, in the region of the piston 3 between the piston packings 15, the seal belt 19 is a slit. Lifted from 10, it is guided through a guide passage 20 of the piston 3, whereby the slit 10 is free for the penetration of the coupling means 16. Outside the cylinder, the slit 10 is covered by a cover belt 21 outside the area of the piston 3, which cover belt is likewise lifted from the slit 10 in the area of the piston 3 so that the driver 17 and the force-releasing member 18 are provided. Is guided through a chamber 22 between and by means of which the coupling means 16 can penetrate the slit 10 and can be rigidly coupled with the driver 17 and, if appropriate, can be made integrally with the driver 17. Good. In order to hold the cover belt 21 on the outer surface 10, the slit 10
Magnet belts 23 are embedded in the cylinder tube 1 on both sides of the piston 3.
Outside this range, a cover belt 21 made of a material suitable for that purpose is magnetically retained. The holding of the belt, however, can also take place in other known ways.

Due to the connection between the driver 17 and the force-releasing member 18, the driver 17 has a transverse groove 24 on the side opposite the slit, approximately in the middle of its longitudinal length.
On each side of this transverse groove, one notch 25 is provided, which is provided in the force-releasing member 18 and is aligned with the transverse groove 24. A fitting key 26 is embedded in the lateral groove 24, in which case the end section of the fitting key 26 engages the notch 25, that is to say the fitting key 26 is at a right angle to the central plane 14. It is extended. The mating key 26, together with the lateral groove 24 and the cutout 25, forms a coupling device between the driver 17 and the force-releasing member 18, which coupling device comprises a lateral groove 24.
Alternatively, according to the play of the fitting key 26 in the cutout 25, the relative movement and the relative rotation between the entrainment body 17 and the force emission member 18 are enabled.

As shown in FIGS. 2 and 3, one guide groove 27; 28 extends from the outer surface 11 at the side of the slit 10, and these guide grooves are integrated with the cylinder tube 1. Being machined and tilted obliquely downwards from the outer surface 11 towards the side faces 12; 13, ie the central plane 14
Converging towards. The walls of the guide grooves 27, 28 on the outer surface side, which are correspondingly inclined and extend, form guide surfaces 29, 30 on which the corresponding guide surfaces of the force-ejecting member 18 slide. Moveable contact. In other words, in this case, the guide surface of the force-releasing member 18 is provided on the guide strips 31 and 32, and these guide strips are strip-shaped extensions that project obliquely downward and outward of the force-releasing member 18. It is held firmly in the part 33. The extension 33 has play on all sides with guide grooves 27, 2
8 is engaged. The guide surfaces 29, 30 together with the associated guide strips 31, 32 each have one non-adjustable guide track 2
9 and 31; 30 and 32, the guide tracks of which extend in a mirror image at an angle to the central plane 14. On the outside, one section 34 of the force-releasing member 18 is connected to the extension 33, which section 34 covers the outer surface 11 up to the transition to the side surfaces 12, 13. One guide strip 35; 36 is embedded in the section 34 on the outer surface side in such a way that it can slide vertically, that is to say parallel to the central plane 14. The guide strips 35 and 36 are
Like the guide strips 31, 32, they extend parallel to the cylinder axis 9. The underside of the guide strips 35, 36 slidably contacts the flat edge strip section of the outer surface 11.
Adjusting screws 37, 38 are adjustably screwed into both sections 34, the adjusting screws 37, 38 extending parallel to the central plane 14 and orthogonal to the cylinder axis 9. A plurality of adjusting screws 37, 38 are evenly distributed in each section 34 over the longitudinal extension of the force-releasing member 18 in the direction of the cylinder axis 9. The threaded engagement of the adjusting screws 37, 38 with the section 34 may be of the self-locking type, however, in a manner not shown, a counter nut is provided to fix the respective adjusting position. May be. The ends of the adjusting screws 37, 38 on the outer surface side are in contact with each other via the support strip 39 on the side of the guide strips 35, 36 opposite to the outer surface. That is, the support strip 39 extends parallel to the cylinder axis 9 and is slidably guided together with the guide strips 35 and 36 parallel to the central plane 14. The guide strips 35, 36 thereby form together with the outer surface 11 adjustable guide tracks 11, 35; 11, 36, which guide tracks lie in a plane perpendicular to the central plane 14. ing.

The guide strip 3 is adjusted using the adjusting screws 37 and 38.
The height position of 5, 36 can be adjusted so that in the guide tracks 29, 31; 30, 32; 11, 35; The ejection member 18 is adjusted relative to the cylinder tube 1 as desired and is slidably guided. The guide tracks 29, 31; 30, 32 in this case undertake the side guides of the force-releasing member 18 and prevent the force-releasing member 18 from lifting upwards from the cylinder tube 1. Guide strips 35, 36 for the segment 34 that may occur in some cases
The lateral play of does not affect the quality of the lateral guidance of the force-releasing member 18 with respect to the cylinder tube 1. Guide strip 3
This lateral play of 5, 36 has no effect on the vertical position of the guide strips 35, 36 with respect to the section 34, which is defined by the adjusting screws 37, 38, so that this lateral play is not affected. , It has no effect on the quality of the guidance of the force-releasing member 18 in the cylinder tube 1. Misadjustments by the adjusting screws 37 and / or 38 can easily be confirmed in any case. That is, if only the adjusting screw 37 or 38 on one side is screwed in extremely deeply, the force-releasing member 18 causes a catch in the guide track with respect to the cylinder tube 1 under some lateral sliding of the force-releasing member 18, What is important here is that said lateral sliding of the force-releasing member 18 is possible within the play of the coupling means 18 in the slit 10, so that the force-releasing member 18 is of the slit 10. There is no contact with the side walls. If the adjusting screws 37 and / or 38 are pulled out too large, a very large guide play is produced due to the force-releasing member 18. The catches and the extremely large guide play can be located and corrected without difficulty. After the adjustment, when the cylinder pipe 1 is expanded by the pressure medium load, the guide groove 2
The play on the side of the center plane between 7, 28 and the extension 33 is somewhat smaller, so that no contact that impedes movement occurs. That is, in this case, at the same time, the guide tracks 29, 31;
The play at 30, 32 is slightly increased, however, this slight increase in play does not impair any functionality of the pressure medium cylinder. When a force-releasing member 18 is loaded by a vertical force that extends in the central plane 14 or parallel to the central plane 14 and orthogonal to the cylinder axis 9, the force will be guided perpendicularly to this force direction. Orbit 1
1,35; 11,36, i.e. in this case no wedge effect occurs as it increases the load on said guide tracks 11,35; 11,36. The force transmission can therefore take place with little friction and correspondingly little wear.

In the embodiment of FIG. 4, the force-releasing member 18 engages with its guide leg 40 at the side of the guide track 11, 35; 11, 36 with the upper section of the side face 12, 13 of the cylinder tube 1. ing. Guide grooves 41, 42 extend from the side surfaces 12, 13 in the engagement range, and these guide grooves extend in the cylinder tube 1 while being inclined substantially obliquely toward the outer surface 11. The outer walls of the guide grooves 41 and 42 form guide surfaces 43 and 44. These guide surfaces correspond to the guide surfaces 29, 30 of the embodiment shown in FIG. 2 and therefore these guide surfaces 43; 44 have guide legs 40 which engage the guide grooves 41, 42. The guide strips 31, 32 which are rigidly connected to the sections are in contact. This gives rise to guide tracks 31, 43; 32, 44, which in terms of their function are not present in the embodiment of FIG.
It completely corresponds to 1; 30, 32. The other construction of the pressure medium cylinder shown in FIG. 4 corresponds completely to the embodiment shown in FIGS. 1 to 3, and therefore the other components are designated by the same reference numerals. Therefore, the features and advantages described for the embodiment shown in FIGS. 1-3 are likewise applicable for the embodiment shown in FIG.

In the embodiment shown in FIG. 5, the guide track 11,
The positions and arrangements of 35; 11,36; 31,43; 32,44 completely correspond to the embodiment of FIG. 4, so that this embodiment of FIG. 5 also corresponds to the previously described embodiment. It has the functional form and advantages described above. The difference between the embodiment shown in FIG. 5 and the embodiment shown in FIG.
Only with respect to the adjusting device. In the embodiment of FIG. 5, the adjusting screws 37, 38 are screwed onto the guide leg 40 in an axial direction perpendicular to the central plane 14. The adjusting screws 37 and 38 are
Acting on the slidable wedge-shaped members 45 in the force-releasing member 18, these wedge-shaped members are slidably supported on the force-releasing member 18 via the wedge surface 46 on the side opposite the outer surface, and On the side facing the outer surface, it is slidably supported by the guide strips 35, 36, which in some cases is
This is done via a strip (not shown) corresponding to the support strip 39. The wedge surface 46 extends from the center plane 14 to the outer surface 11
In the direction of removal to the outside, so that the wedge surface slides together with the guide strips 35, 36 when the adjusting screws 37, 38 are screwed in towards the outer surface 11 inside the force emitting member 14. Be punished. Also in this embodiment, the adjusting screws 37 and 38 may be configured to be self-locking type or may be configured to be fixed by the counter nut.

Of course, in the embodiment shown in FIGS. 2 and 3 as well, post-wedge adjustment can be performed as in the embodiment of FIG. In the embodiment shown in FIGS. 4 and 5, it is also possible to configure the guide grooves 41, 42 on the side opposite to the outer surface 11 by enlarging it into a T-shape as shown, in which case the guide The grooves 41, 42 are likewise suitable for holding a member fixed to the cylinder tube 1, for example a limit stop for the force-releasing member 14. In a variant of the embodiment shown in FIGS. 2 and 3, it is advantageous if the cover belt 21 is constructed with a width greater than the distance between the opening edges of the two guide grooves 27, 28 which are spaced apart from each other. That is, the chamber 22 and thus the force-releasing member 18 can in this case be correspondingly wide for guiding the cover belt 21 therethrough. By this change, the cover belt 21 can cover not only the slit 10 but also the guide grooves 27 and 28 on the outer side of the force emission member 18, and consequently, the contamination can be prevented. A pressure medium cylinder constructed in this way is particularly suitable for operation in potentially polluted environments.

The guide strips 35 and 36 are connected to the guide tracks 11 and 3, respectively.
5; 11, 36 need not cooperate directly with the outer surface 11 extending over the entire width of the cylinder tube, the guide strips 35, 36 rather being offset vertically with respect to the remaining outer surface 11. The exposed outer surface section can also be contacted. That is, such vertical displacement facilitates the machining of the surface sections of the cylinder tube 1 which cooperate with the guide strips 35, 36.

Guide strips 31, 3 in all embodiments
2, 35 and / or 36 can be assembled from one end face of the force emitting member 18 even if the force emitting member 18 is already present in the cylinder tube 1. This allows the worn guide strips to be easily replenished.

[Brief description of drawings]

1 is a vertical cross-sectional view of a pressure medium cylinder according to the present invention.

2 is an enlarged cross-sectional view of the pressure medium cylinder shown in FIG. 1 taken along the line AA.

FIG. 3 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 4 is an enlarged sectional view corresponding to FIG. 3, showing another embodiment of the pressure medium cylinder.

FIG. 5 shows a further embodiment of the pressure medium cylinder,
FIG. 5 is an enlarged cross-sectional view corresponding to FIG. 4.

[Explanation of symbols]

1 cylinder pipe, 2 cylinder cover, 3 piston, 4,5 load chamber, 6 cylinder hole, 7 holding and guiding groove, 8 cylinder wall, 9 cylinder axis, 1
0 slit, 11 outer surface, 12, 13 side surface,
14 center plane, 15 piston packing, 16 coupling means, 17 carrying body, 18 force discharge member, 19
Seal belt, 20 guide passage, 21 cover belt, 22 chamber, 23 magnet belt, 24 lateral groove, 25 notch, 26 fitting key, 27, 28
Guide groove, 29,30 guide surface, 31,32 guide strip, 33 extension, 34 section, 35,36 guide strip, 37,38 adjusting screw, 39 support strip,
40 guide legs, 41, 42 guide grooves, 43, 44
Guide surface, 45 wedge-shaped member, 46 wedge surface

Claims (8)

[Claims] 1. A pressure medium cylinder comprising a cylinder tube (1) having a longitudinal slit and closed on the end side, said cylinder tube (1) having a slit (10) on the slit side. ) Outer surface (1
1), the piston (3) is slidably guided in the cylinder tube (1) by means of two piston packings (15) arranged near its ends. In the range between the piston (3) and the piston packing (15), the slit (1
0) through a coupling means (16), which is rigidly connected to the driver (17) located in front of the slit (10) on the outside of the cylinder tube and on the inside of the cylinder tube on both piston packings (15). A sealing belt (19) is arranged which covers the slit (10) in a pressure medium-tight manner on the outside of the section which is closed by means of the sealing belt (19) on the outside, and which extends outside the penetration range of the coupling means (16). There is a cover belt (21) to cover except
A force releasing member (18) guided so as to be slidable in the axial direction along the outside of the cylinder tube is provided, and the force emitting member is
At least on the side opposite to the slit and on the side, in which case the slit (10)
A force emitting member (1) extending symmetrically through a central plane (14) extending through the cylinder and containing a cylinder axis (9).
8) guides on each side of the slit (10) are two flat guide tracks (29, 31; 31, 43; 11, 35; 30, 3 which extend at an angle to each other and extend axially parallel to each other.
2; 32, 44; 11, 36), each of which has a guide groove (27, 28; 41, 42) arranged in the cylinder pipe (1) and a force-releasing member ( 18) Adjustably arranged guide strips (35, 36) each
And a driver (17) and a force-releasing member (18).
Between the driver (17) and the force-releasing member (18) with limited lateral and rotational movability, a coupling device for transmitting axial forces between them is arranged. In the thing, the guide of the force-releasing member (18) is
Guide grooves (27, 28; on both sides of the slit (10);
41, 42) inside one of the guideways (29, 31; 3
0, 32; 31, 43; 32, 44) and the other guide track (11, 35; 11, 36) on the outer surface (11)
And in this case one of the guideways (29, 31;
30, 32; 31, 43; 32, 44) extend unadjustable and inclined with respect to the central plane (14) and the other guide track (11, 35; 11, 36) is
Guide strips (35; 36) extending parallel to 1) and adjustable in a direction perpendicular to the outer surface (11)
A pressure medium cylinder with a cylinder tube having a longitudinal slit, characterized in that 2. The guide groove (27, 28) has an outer surface (11).
The side surface (12, 1) of the cylinder tube (1)
3), the one guide surface (29, 30) extends toward the outer surface (1) of the guide groove (27, 28).
2. The pressure medium cylinder according to claim 1, wherein the pressure medium cylinder is located on the slope facing side 1). 3. The cover belt (21) has two guide grooves (2).
7 and 28) has a width larger than the distance between the opening edge portions which are separated from each other, and covers not only the slit (10) but also the openings of both guide grooves (27, 28),
The pressure medium cylinder according to claim 2. 4. A side surface (12, 1) in which the guide groove (41, 42) is connected to the outer surface (11) of the cylinder pipe (1).
3) as a starting point, it extends obliquely toward the outer surface (11), and one guide surface (43, 44) is on the side of the guide groove (41, 42) facing the outer surface (11). 2. The pressure medium cylinder according to claim 1, which is located on a slope. 5. The guide groove (41, 42) has an outer surface (11).
The pressure medium cylinder according to claim 4, wherein the pressure medium cylinder is configured to be expanded in a T-groove shape on the side opposite to the side. 6. A guide strip (35, 36) carried by the force-releasing member (18) has an adjusting screw (3) arranged at right angles to the outer surface (11) of the force-releasing member (18).
7. The pressure-medium cylinder according to claim 1, wherein the pressure-medium cylinder is adjustable. 7. A wedge surface in which guide strips (35, 36) are arranged on the force-releasing member (18) and extend at a right angle to the outer surface (11) and at an angle to the outer surface (11). Carried by a wedge-shaped member (45) with (46), the wedge-shaped member (45) having a central plane (14);
6. The pressure medium cylinder according to claim 1, wherein the pressure medium cylinder is adjustable by means of an adjusting screw (37, 38) arranged at right angles to the force-emitting member (18). 8. The wedge surface (46) is a central plane (14).
Pressure medium cylinder according to claim 7, which is arranged so as to be enlarged from the outer surface (11) in a direction away from.