DE2802293A1 - CLAMPING DEVICE - Google Patents

Description

DIPL.-INQ. DIETER JANDER DR.-INQ. MANFRED BONINQ PATENT LAWYERS

- 3 -

RUD chain factory

Rieger & Dietz GmbH. & Co. 280 / 17.144 DE

"Clamping device"

The invention relates to a tensioning device for chain strands with two connection heads for chain links, shackles, rings, bolts or the like. and with one to change the distance between the connection heads serving screwing device to which at least one screw spindle and one Screw sleeve belong.

Clamping devices of the above type are known which each have two screw spindles which are guided in screw sockets of a screw sleeve. With these well-known Clamping devices form the screw spindles and the connection heads each a part, which is regularly called Die part executed and therefore expensive. If one takes into account that clamping devices of the type in question with Connection heads of various shapes can be formed, such as fork-shaped, hook-shaped or loop-shaped connection heads, it becomes clear that not only the production of the uniform connection heads and screw spindles existing components is costly, but also their storage.

The invention is based on the object of a clamping device of the type mentioned at the beginning, which offers advantages in terms of manufacturing technology and a modular design enables. According to the invention, this object is achieved in that each screw spindle has a threaded bolt is formed, at one end of which a connection head is attached.

9Q9829 / 05U

DIPL.-INQ. DIETER. JANDER DR-INQ. MANFRED BHNINQ PAFENIANWALTt

The clamping device according to the invention offers the advantage that one and the same threaded bolt can be combined with different connection heads depending on the requirements. The individual production of connection heads and threaded bolts is considerably more cost-effective than the production of more uniform ones Drop forgings.

A construction in which the threaded bolt with its one end into an on has proven to be particularly simple Connection head arranged receiving bore screwed and in the screwed-in state by a securing element is locked.

The invention is described below with reference to the accompanying drawing explained in more detail. Show it:

1 shows a clamping device with two symmetrically arranged screw spindles;

2 shows a clamping device with only one screw spindle; FIG. 3 shows a side view of the clamping device according to FIG. 2;

4 shows a plan view of a detail of the clamping devices according to FIGS. 2 and 3;

5 shows a connection head enabling the connection of a belt in the front view and

FIG. 6 shows a section along the line VI-VI in FIG. 5.

In Fig. 1, 1 denotes two identical screw spindles, which are arranged in a screw sleeve, the can be set in rotation by a toggle 3. At the ends of the screw spindles 1 are a fork-shaped connection

- 5 -

809829 / 05U

DIPL.-INQ. DIETER JANDER DR.-INQ. MANFRED BÖNINQ

ΡΑΓΕΝ ΓΑΝ WALTi

connection head 4 and a hook-shaped connection head 5 attached. For the purpose of fastening, the ends of the screw spindles 1 facing away from one another are in receiving bores 6 of the connection heads 4 and 5 are screwed in and, in the screwed-in state, by a securing element 7 fixed. This securing element, which is formed by a dowel pin or a clamping sleeve, engages with part of its circumference in a locking recess 8 arranged on the outside of each screw spindle 1 Arrangement of the securing element in the circumferential area of the The screw spindle offers advantages in terms of strength.

The screw spindles are made of parts of a produced in one operation and then desired in pieces Length divided threaded rod formed. After assembling the screw spindles with the ones assigned to them Terminal heads 4 and 5 are attached to the terminal heads with protective sleeves 9 which secure the screw sleeve 2 and enclose the screw spindles 1 over part of their length. A safety chain 10 is anchored to one of the protective sleeves, which is used to secure the toggle 3 in the each selected position is used. The safety chain 10 can be attached to a wire bracket 11 attached to the toggle 3 hang in, the bracket leg 12 of which carries an elastic locking element 13.

Instead of hook-shaped or fork-shaped connection heads, other connection heads can of course also be used use. Claw-shaped or eyelet-shaped connection heads can also be considered, for example.

2-4, a clamping device of a modified design is shown. For parts, the parts of the construction 1 correspond to, the same reference numerals have been used.

- 6 909829 / 05U

02293

DlPL-INQ. DIETER JANDER DR.-INQ. MANFRED BONINQ PAFENTANWALTt

The clamping device according to FIGS. 2-4 has only one screw spindle 1, which is mounted in the screw sleeve 2 is. In this construction, too, a fork-shaped connection head 4 is arranged at the end of the screw spindle 1. A second, also fork-shaped connection head 14 is on the other hand attached to the screw sleeve 2. To transfer the rotational movement of the screw sleeve to the connection head To prevent 14, the connection head 14 is mounted in the manner of a vortex at the end of the screw sleeve. He owns for this purpose a pin 15 with a groove 16, which together with a groove 17 on the inner wall of the screw sleeve 2 forms a trough for balls 18.

5 and 6 show a connection head 19 with one Cross bolt 20 for fastening a belt 21. They make the variety of possible configurations of the described Clamping device particularly clearly, they show that the clamping device not only for chains, but also can be used for straps. Of course, ropes can also be tensioned with the device described.

MB: BL

909829 / 05U

Claims (7)

Expectations : \\, j Clamping device for chain strands with two connection heads for chain links, shackles, rings, bolts or the like. and with a screwing device serving to change the distance between the connection heads, to which at least one screw spindle and a screw sleeve belong, characterized in that each screw spindle (1) is formed by a threaded bolt, at one end of which a connection head (4, 5, 19 ) is attached. 2. Clamping device according to claim 1, characterized in that the threaded bolt (1) with its one The end is screwed into a receiving bore (6) arranged on the connection head (4, 5, 19) and screwed through a securing element (7) is locked. 3. Clamping device according to claim 1 or 2, characterized in that the securing element (7) of a dowel pin or a clamping sleeve is formed and with part of its circumference in one on the outside of the screw spindle (1) arranged locking trough (8) summarizes. Postal check account Berlin West Account 17 4 3 84-100 Berliner Bank AG., Account 01 10921 900 909829/0514 -2-ORIGiNAL INSPECTED 28U2293 DIPL.-INQ. DIETER JANDER DR.-INQ. MANFRED BÖN1NQ PATENT LAWYERS 4. Clamping device according to one of claims 1 to 3, characterized in that the threaded bolt formed by a cut part of a threaded rod will. 5. Clamping device according to one of claims 1 to 4, characterized in that at least a protective sleeve (9) is attached to a connection head (4, 5, 19), which the screw sleeve (2) and the screw spindle (1) encloses part of its length and to which a safety chain (10) is anchored, which for the purpose of securing a toggle (3) which is used to rotate the screw sleeve (2), it can be connected to the latter. 6. Clamping device according to claim 5, characterized in that g e k e η η shows that the safety chain (10) can be suspended in a wire bracket (11) attached to the toggle (3), one of the bracket legs (12) carries an elastic locking element (13). 7. Clamping device according to one of claims 1 to 6, characterized in that the connection heads (4,5,19) are interchangeable according to the type of modular components. 909829/0514 _ 3 _