JPH0434038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises two articulatingly connected semi-cylindrical joints and a rigid structure in the closed position in which these joints surround the tube sleeve with play. an annular protrusion having a downwardly directed annular shoulder on which the sleeve edge of the tube rests on the cylindrical inner surface of the jaw; Tubes screwed together, in particular for use in shaft-mining, of the type, in which said jaws are further provided at their upper ends with a funnel-shaped enlargement, which is connected to said projection, and each with a handle. Concerning a fitting and aligning device for.

Such known devices include a handle near the open end of the jaw. These handles have sharp edges and face toward the operator when the jaw is closed. The closure part is designed as a separate closure ring. Having to loosen the grip around one of the handles in order to operate the closure during opening is problematic and disadvantageous, as the device is usually heavy in nature. Furthermore, after opening the jaw, the device can only be removed from the operator's point of view, which is disadvantageous since he must let go of one hand and support the heavy device with the other. It is. Due to the location, the worker must also stand on the opposite side of the closure to enable this operation. However, it is difficult to grasp the handle at that time. This is because the handle is on the opposite side,
This is because it is facing away from this worker. Moreover, in this case, it is also difficult to operate the closing part.

The object of the invention is to improve a device of the type mentioned at the outset, making it easier to handle.

The above problem can be solved by the present invention, in which: (a) two semi-cylindrical jaws are provided;
(b) each of these jaws has a first end and a second end; (b) means for articulating said jaws are provided at the first end; (c) each of said jaws has an inner surface with an annular projection for resting the sleeve edge of the tube and further a funnel-shaped enlargement extending from the upper end of each projection; (d) is provided with a closure at the second end for locking said jaws together in the closed position; (e) is provided on one of said jaws, and said closure is (f) a handle is provided in functional association with the closure means for unlocking; (f) said handle is associated with said first end pivoting on said jaw and said closure; (g) the handle is provided so as to be rotatable on a longitudinal axis;

A particular advantage of the design according to the invention is that one of the handles is formed at the same time as part of the closure. This configuration eliminates the change of hands required in known devices to operate the closure, and allows the device to be held completely in both hands at all times. Furthermore, the arrangement according to the invention makes it possible to operate the device from the hinge side, so that the device can always be installed and removed from the front. This device is particularly suitable for tubes of relatively small diameter. In this case, the device can be easily operated by one person. For larger diameter tubes, correspondingly larger equipment is required which can no longer be operated by one person.

A device for handling relatively large diameter tubes is defined in claim 8. The device is designed in such a way that it can be operated by two people, thus ensuring its use even with very large diameter tubes. A particular advantage is that one of the handles is formed as part of the closure. This also greatly facilitates the handling of very heavy equipment.

Advantageous and expedient developments of the embodiments according to claims 1 and 8 are specified in the other claims. If the stirrup-like handle adjoining the closure of the other jaw is designed as a swingable closure-opening means, this is specified in claims 12 to 14. However, the advantage is that the device according to the invention can be opened from any direction. This advantage is particularly advantageous in that the heavy equipment according to the invention can be suspended, as is often done in practice, by ropes and then the equipment can be opened from the direction located in each case closest to the operator. This is most noticeable when the switch is opened so that a change of direction is no longer required to open.

The invention will be explained in more detail below with reference to embodiments illustrated in the accompanying drawings.

The drawings (FIGS. 1 to 3) show a fitting and centering device 1 for tubes 30, 32 which are torsionally connected to each other, especially for use in shaft digging with tubes. This device consists of two semi-cylindrical jaws 4,
20, which are articulated to each other via a hinge member or linkage 36. The cylindrical inner surface of these jaws 3
8, 40 has an annular shoulder 4 facing downward.
Annular protrusions 42 and 44 are formed having numbers 6 and 48. With this shoulder, the device rests on the edge of the sleeve 34 of the tube 32 when assembled. At the upper end, the jigyo is provided with funnel-shaped enlargements 50 and 52 that continue into the protrusions. On the outside of the jio, one handle 2 and 24 is provided, approximately in the center.

The handle 2 of the jaw 4 is formed as a part of the closure part 6. Furthermore, this handle 2 is provided on the jaw so that it can be rotated about a shaft 54. A rotatably mounted connecting rod 8 connects the handle 2 to one free end 14 of the double lever 12.
The double lever 12 is rotatable about an axis 56 and is likewise mounted on the jaw 4. The other free end 16 of this double lever 12 is formed with a pawl 18 which, when the lever is closed, engages the tooth 22 provided on the local lever 20.
- can be seen particularly clearly from FIG. The locking device 10 is in particular designed as a self-securing snap locking device.

When both jaws are closed, the handles 2 and 24 are located diametrically with respect to each other.

As an alternative to the embodiment shown in the drawings, it is also possible to design the handle 2 so that it can be rotated about its horizontal nut 26. In this case, a rotational movement is transmitted to the locking device 10 rather than a swinging movement. This can be done, for example, by using a Bowden cable (not shown) instead of the connecting rod 8.

In the drawing, the structural parts of the closure 6 and the locking device 10 are shown as elements mounted on the jaw. The structural parts of the closure (with the exception of the handle 2, of course) can also be formed in whole or in part by being fitted into the jaw (not shown).

Ergonomic considerations are also taken into account in the fitting and centering device shown in the drawing for tubes that are torsionally connected to one another. Of course, the handles 2 and 24 may also be off-center. That is, they can be provided diametrically in the closed state and also close to the hinge 36 in the direction thereof. In each case, the arrangement shown and described allows the device to be installed from the front as well as to be removed from the front, which significantly reduces the workload.

4 to 7 show a fitting and centering device 1' for a pipe to be torsionally connected to a task (not shown), especially for use in shaft excavation with pipes.
It shows.

This device comprises two linear cylindrical jaws 2', 4' which are articulated to each other via hinges or linkages 6'.
On the cylindrical inner surface 8', 10' of these jaws there is in each case one downwardly directed annular shoulder 1.
Annular protrusions 12' and 14' with grooves 6' and 18' are formed. At this shoulder the device rests on the edge of the tube sleeve when assembled. At the upper end, these jaws are provided with funnel-shaped enlargements 20' and 22' following the projections. On the outside of Jiyo 2', 4',
Two curved handles lined up on the circumference 2
4', 26' and 28', 30' are provided. These handles are designed as stirrup handles. The stirrup-like handle 30' of the jaw 4' is formed as part of the closure part 32'. In addition, the stirrup-like handle 30' is attached at one end 34' to the jaw so as to be rotatable about an axis 36'; the other end of the stirrup-like handle 30' A claw body 40' is formed on 38', and this claw body engages with teeth 42' provided on the local jaw 2' when the jaw is closed. This is the fifth
This can be seen from Figures 7 to 7. The closure 32' is especially designed as a self-safety device. The end 38' of the stirrup-like grip 30' is provided with a U-shaped or square hole 44' as a guide and rotation limiter.
has been passed through. A spring 46' is provided in this bore, which pretensions the rotatable stirrup-like handle 30' in the closed position.

In the case of the embodiment shown in FIG.
6' is also rotatable and designed as a closure-opening means. In addition, the stirrup handle 26', like the stirrup handle 30', is mounted on the jaw 2' at its one end 48' in a rotating means about a pivot point 50'. The local free end 52' of the stirrup handle 26' engages with the outer end of the stirrup handle 30', i.e. the pawl 40', from below, so that the stirrup handle 26' is moved outward again. By turning the stirrup handle 30' from the closed position to the open position. Stirrup-like grip 26'
The end 52' is likewise guided through a U-shaped or square hole as a guide. In addition, a pressure spring is also provided in this bore 54', which spring fixes the stirrup-like handle 26' in the closing direction of the closure part 32'. However, such a spring is not always necessary.

Pretensioning of the stirrup handles 30' and/or 26' is achieved by means of torsion springs arranged in the region of the pivot points 36' and 50'.

FIG. 6 shows a simplified embodiment of the setting and centering device. In this exemplary embodiment, the stirrup handle 26' according to FIG. 5 is designed as a stirrup handle 56'. The device according to FIG. 6 is otherwise identical to the device according to FIG. Identical structural parts of both devices are therefore designated with the same reference numerals and reference is made to FIG. 5 for a description thereof.

FIG. 7 shows a third embodiment of the setting and centering device, in which the stirrup-like handle 3 of the device according to the embodiment of FIGS. 5 and 6 is shown.
0' is designed as a spring steel stirrup 58'. This spring steel stirrup 58' is firmly attached at its end 60' to the jaw 4' and is pretensioned by its self-tension in the closing direction of the closure 32'. In the device according to FIG. 7, the stirrup handle adjacent to the closure 32' is likewise designed as a fixed stirrup handle 56'. However, this stirrup-like handle 56' can also be designed as a resilient stirrup-like element 62', which, like the stirrup-like element 26' in the embodiment according to FIG.
Acts as an opening means. The embodiment according to FIG. 7 is otherwise similar to the apparatus of the embodiment according to FIGS. 5 and 6. Therefore, structural parts which correspond to structural parts of the device according to FIGS. 5 and 6 have been given the same reference numerals and have been omitted from description to avoid unnecessary repetition. Please refer to

The embodiment of the fitting and centering device shown in FIGS. 4 to 7 is intended especially for use with pipes of relatively large diameter. These devices are correspondingly heavy and therefore cannot be operated by one person, but rather by two people positioned around the tube sleeve. In the embodiment according to FIG. 6, the device can only be opened using one stirrup-like handle 30'. In contrast, in the embodiment according to FIG.
6'. Owing to their weight, these devices are often suspended by ropes, the opening being possible each time by one worker and always from the side closest to this worker.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a first embodiment of the device according to the invention in the open state with two tubes to be connected; FIG. 2 is a plan view of the device according to FIG. 1 with the closing device; 3 is a side view also showing the closing device of the device according to FIG. 1, FIG. 4 is a side view also showing the closing device of the second embodiment of the device according to the invention, FIG. Figure 5 is a plan view of the device according to Figure 4;
FIG. 6 is a plan view of a third embodiment of the device according to the invention, and FIG. 7 is a plan view of a fourth embodiment of the device according to the invention. The symbols in the figure are 2...handle, 4...jiyo, 6...
...closed part.

Claims (1)

Claims: 1. Two semi-cylindrical joints articulated with one another and a device for firmly joining said joints in the closed position in which these joints loosely surround the tube sleeve. an annular protrusion having a downwardly facing annular shoulder on which the sleeve edge of the tube rests on the cylindrical inner surface of the jill; each having a funnel-shaped enlarged portion connected to the projection at its upper end and a handle;
In a fitting and centering device for pipes screwed together, of the type used, in particular in shaft excavation, in which: (a) two semi-cylindrical jaws 4, 20 are provided; each of these jaws has a first end and a second end; (b) means 36 for articulating said jaws 4, 20 are provided at the first end; (c) each of said jaws is attached to sleeve edge 3 of tube 32;
4 and a further funnel-shaped enlargement 50, 52 extending from the upper end of each projection.
(d) a closure 6 is provided at the second end for locking said jaws 2, 4 together in the closed position; (e) said jaws 4, 20 (f) said handle 2 is provided on one of said jaws and functionally associated with the closure means for unlocking said closure 6; (g) the handle 2 is arranged to be rotatable on a longitudinal axis; A fitting and aligning device characterized by the following. 2. The fitting according to claim 1, wherein the handle 2 is rotatably mounted on the jaw 4 and is operatively connected to the locking device 10 via a rotatably mounted connecting rod. Includes and aligns device. 3. The locking device 10 is equipped with a double lever 12, at one free end 14 of which a connecting rod 8 is attached, and at the other free end 16 a connecting rod 8 attached to the other jaw 20. The fitting and centering device according to claim 2, wherein a pawl body 18 is formed on the tooth 22 and engages with the tooth 22 in a closed state. 4 Handle 2 with a handle 4, 20 provided in the center,
24 and whose handles are arranged diametrically in the closed state of the jaw. Fitting and alignment device. 5. Fitting and centering device according to any one of claims 1 to 4, in which the handle 2 is rotatable about a horizontal axis 26. 6. Fitting and centering device according to one of the claims 1 to 5, characterized in that the handle 2 is connected to the locking device via a Bowden cable. 7. Claims 1 to 6, in which the structural parts of the closing member 6 or the locking device 10, or some of these structural parts, are provided by being wholly or partially fitted into the housing. A fitting and centering device according to any one of the above. 8. Two semi-cylindrical joints articulated with one another and a closure for firmly joining said joints in the closed position in which these joints loosely surround the sleeve of the tube. an annular protrusion having a downwardly facing annular shoulder on which the sleeve edge of the tube rests is formed on the cylindrical inner surface of the jyo; In setting and centering devices for tubes screwed together, especially used in shaft excavation, of the type with a funnel-shaped enlargement connected to a shaft and a handle in each case, Each jaw 2', 4' is provided with handles 24', 26', 28', 30' arranged side by side on the circumferential surface 2', one of these handles at the same time disengaging a portion of the closure 32'. A fitting and aligning device characterized by being formed as a. 9 Handle 3 formed as part of closure 32'
0' is shaped as a stirrup, one end 34' of this stirrup is rotatably mounted on the jig 4', and the other end 38' is a stirrup mounted on the local jio 2'. 9. The setting and centering device according to claim 8, which is designed as a co-operating closing element 40' of the closing part 32' of the closing element 42' of the part 32'. 10 The closing element of the stirrup-like grip 30' is the claw body 4
0', and the closing element of the jaw 2' is designed as a tooth 42' which meshes with the pawl 40' in the closed state. Device. 11. Fitting and centering device according to any one of claims 8 to 10, in which all handles are formed in the form of stirrups. 12. Any one of claims 8 to 11, wherein the stirrup-like handle 26' adjacent to the closing part 32' of the local jacket 2' is formed as an additional closing/opening means. The fitting and aligning device described in one. 13 One end 48' of the stirrup-like grip 26' is rotatably mounted on the jaw 2', and the other end 48'
2' is formed and provided in such a way that the stirrup-like handle 26' can be rotated outwardly to drive the stirrup-like handle 30' formed as the closing part out of the closed state. 13. A fitting and aligning device according to claim 12. 14. The fitting and combination according to claim 13, wherein the end portion 52' of the stirrup-like handle 26' is configured to engage with the pawl 40' of the stirrup-like handle 30'. Aligning device. 15 At least the stirrup-like handle 30', which is designed as a closing element, is moved by the spring 46' to the closure part 3.
The setting and centering device according to any one of claims 8 to 14, which is pretensioned in the closed position 2'. 16. The stirrup-like grips are guided through U-shaped or square holes 44', 54' provided on the respective jaws 4', 2' for guiding them and limiting their rotational movements. A fitting and aligning device according to claim 15. 17. According to claim 16, a pressure spring 46' is provided in the hole 46' of the stirrup handle 30', which is formed at least as a closing part, for loading this stirrup handle. The described fitting and alignment device. 18 At least one pivotable stirrup-like handle formed as a closure part is formed by a pretensioned spring steel stirrup 58' in the closed state of the closure part 32', which stirrup 18. A setting and centering device according to claim 1, characterized in that one end 60' of the thread is firmly connected to the associated jaw 4'.