TW201303121A - Method for setting a cavity dowel and setting device and dowel system for performing the method - Google Patents

Abstract

A method for setting cavity dowel (18) is disclosed, the cavity dowel (18) comprising an anchor magazine (20), the anchor magazine extending along a dowel axis (A) and having an axial insertion end (22) and an opposite axial connector end (24), wherein this method comprises the following steps: (a) making a borehole (12) in a torque bearing member (10), the borehole communicating a member surface (14) with a member cavity (16); (b) the anchor magazine (20) being inserted into the borehole (12), so that the insertion end (22) is located in the member cavity (16) and one flange (30) formed on the connection end (24) of the anchor magazine (20) is adjacent to the member surface (14); (c) exerting a force on the insertion end (22) along the axial direction to make the insertion end (22) move toward the connector end (24), so that the anchor magazine (20) in the member cavity (16) is subjected to plastic deformation. In addition, the present invention discloses an setting device for implementation of the aforementioned method, comprising a first device portion (42), which is supported on the flange (30) of the anchor magazine (20) in step (c), and has a second device portion (44) that performs pure shift movement relative to the first device portion (42) along the axial direction, while directly or indirectly fitted on the insertion end (22) of the anchor magazine (20) in step (c). Also disclosed is a dowel system for the implementation of the aforementioned method, comprising a setting device and a cavity dowel (18), and the cavity dowel can be fixed on a load bearing member (10) by the setting device (40).

Description

Method for applying a cavity stud and an applicator and stud system for carrying out the method

The present invention is directed to a method for applying a cavity peg comprising an anchor extending along a peg shaft and having an axial insertion end and an opposing axial joint end.

In the construction of wood and concrete, a building member is fixed to a load-bearing member having a cavity, and a so-called cavity stud is used in the prior art. Here, the cavity stud is inserted into a hole between a surface and a cavity of the load bearing member until the stud flange is on the surface of the member, and a pair of opposite stud segments protrude into the member Up to the cavity, the peg section in the component cavity is then plastically deformed or expanded so that it rests on the cavity side by the back, so that the cavity stud is fixed to the load-bearing member, and it The components themselves can be fixed.

For example, a method for applying a cavity stud in the prior art, wherein the anchor is deformed by screwing in a screw. However, there is a disadvantage in this case: the screw is first turned into a deformation of the anchor, and then has to be turned out and must be transferred again to install the building member. This is particularly laborious and time consuming when applying cavity pegs by hand.

Alternatively, the screw can be threaded into the building member prior to application of the cavity peg, and then if the anchor is inserted into the hole, the screw is screwed into the anchor. However, this means that when the screw is turned, the anchor and the building member must be fixed to the load-bearing member. In addition, it is necessary to transfer the screws to the maximum force, because here, The anchor must be plastically deformed. Especially when installed by hand, this method is laborious and the installer is somewhat skilled.

Moreover, in this conventional application method, the installer never knows whether the stud is applied as specified and can fully exert its carrying capacity.

It is an object of the present invention to provide a method that can apply a cavity peg with little effort and time and to create a simple stud system to carry out the method.

This object is achieved in accordance with the teachings of the present invention by a method for applying a cavity peg comprising an anchor extending along a peg axis and having an axial insertion end and an opposite end An axial joint end, wherein the method comprises the steps of: (a) making a bore in a torque-bearing member that communicates a component surface with a component cavity; (b) inserting the anchor In the borehole, the insertion end is located in the component cavity, and a flange formed on the joint end of the anchor is adjacent to the surface of the member; (c) the insertion end is axially biased and the insertion end is edged The axial direction moves toward the joint end, causing the anchor to plastically deform in the component cavity.

Preferably, the anchor expands during plastic deformation in step c) such that a crotch portion deformed in the cavity of the member rests from the rear. This ensures a reliable and highly stress-resistant connection between the cavity stud and the negative-bearing component, in particular axially.

In a method variant, an application device is provided, by which the steps are implemented b) and c). Such an application device minimizes the cost of the force, particularly in comparison to the case where the cavity peg is applied by hand, since the device is made after drilling, for example, by actuating a switch The process is initiated and steps b) and c) are automatically performed by the upper stud device.

The insertion end of the anchor is provided with an internal thread, wherein the applying device is embedded in the flange and the internal thread of the anchor in step c) to move the insertion end axially relative to the joint end. In a particularly preferred manner, the applicator is provided with a stud storage to further reduce installation time. In the case of the application of the reservoir, the application device is preferably screwed or inserted into the internal thread of the anchor, so that after the cavity peg is placed in the pre-made bore, by means of one in the application device The anchor can begin to deform as it moves or moves relative to it.

After the application of the cavity anchor, a building element is fastened to the load-bearing member by means of an internal thread of the anchor in a method step d). In this case, the applying device is first embedded on the internal thread of the anchor, the elastic deformation of the anchor, and then the structural member is fixed to the load-bearing member by internal threads, wherein an external thread is engaged with the internal thread. Therefore, the constructed internal screw has an advantageous dual function.

If this is not the case, internal threads of different diameters can be used to apply the anchor and the fixed building member, wherein in particular the internal thread of one of the insertion end regions has a smaller diameter than the internal thread for fixing the component (it is located at the joint end) Area) is smaller. This ensures that the application device is embedded in the insertion end and the pegs are deformed by the application.

It is also possible to use different screwing methods for the moving movement of the insertion end, where all those forces that can temporarily transfer the force from the application device to the anchor can be used. The energy mode, for example, can also be achieved by using a cut (Hinterschnitt, undercut) and a hook embedded in it, which is uncoupled after deformation.

In a modified method variant, the cavity stud includes an anchor rod that is longitudinally received in the anchor, wherein the anchor has an axis with a widened anchor width To the head end and a counter-axial axial coupling end with a thread, and wherein the insertion end of the anchor is biased in the direction of the joint end by the anchor rod in step c). This method change is particularly useful where the built-in component has an internal thread that mates with the external thread of the anchor rod.

In a variant of this method, the application device is embedded in the flange and on the thread of the anchor rod in step c) to move the insertion end of the anchor relative to its joint end.

In step d), a building member is fixed to the load-bearing member by the thread of the anchor rod. In order to simplify or enable the screwing between an internal thread of the building element and the anchor thread, the anchor rod and the anchor form a means of rotation at the latest in method step c) to prevent rotation relative to the load-bearing member.

A particularly preferred practice is to provide an application device that is subjected to a load of a force-path curve in step c). Using this measurement curve can be applied at a small cost, so the installer gets a reply telling him if the cavity stud has been applied as specified.

In particular, the force path curve that the applicator can withstand can be compared to a predetermined reference curve, and when the curve is subjected to a predetermined reference curve that allows the band or program window to be within and/or outside the window, A characteristic signal is output. Thus, with such signals (preferably visual and/or acoustic signals), the installer can be directly informed of the loadability of the applied cavity pegs.

If the force-path curve is not received, the application process can also be monitored in such a way that only one measuring device receives and monitors an actually applied force, wherein a predefined force interval for maximum force is reached (Kraftintervall, English: force interval) can end the application process. This simplifies the process and, when the maximum force is not reached, an error message can be output as an indication of a pin that is not properly applied.

Furthermore, the invention comprises an application device for carrying out the aforementioned method, wherein a first device portion is supported on the flange of the anchor at step c) and has a second device portion which is relative to the A device portion is moved purely in the axial direction and is embedded directly or indirectly in the insertion end of the anchor in step c). Here, the relative motion between the first and second device portions can be implemented by force and/or path control.

Here, the cavity studs are preferably stored in a magazine, the studs being automatically applied by the magazine. When the force is applied automatically, the pegs are brought from the storage belt to an application position and are ready for application, wherein the application device is coupled to the pegs so that the pegs can be placed in the bore and the anchors can be deformed. The applicator is then released from the peg and the next peg is moved from the clam to the application position.

Finally, the invention also comprises a peg system for carrying out the aforementioned method, having an application device and a cavity stud that can be secured to a load-bearing member by means of an application device.

In a preferred embodiment of the stud system, the cavity stud includes an anchor having a slot, wherein the slot of the anchor extends in the longitudinal direction. With this anchored embodiment of the slotted hole, it can be plastically deformed with a small force. And can be reproduced relatively simply, and correspondingly this makes the loadability of the cavity pegs very constant.

Other features and advantages of the invention will be apparent from the following description of the preferred embodiments.

Figure 1 shows a load-bearing member (10) having a pre-made bore (12) that joins a component surface (14) to a component cavity (16), for example, The loaded component (10) can be a reinforced mixed sub-soil, an empty chamber ceiling, or a hollow brick wall construction.

On the load-bearing member (10), according to Fig. 1, a cavity peg (18) is fixed which comprises an anchor (20) which extends along a dowel axis A and has an axial insertion End (22) and an opposite axial joint end (24).

After the cavity stud (18) is fixed to the load-bearing member (10), a building member (26) [more correctly, an external thread of the building member (26)] can be utilized as shown in FIG. An internal thread (28) of the anchor (20) is secured to the load bearing member (10). To this end, the external thread of the building member (26) is screwed into the internal thread (28) of the anchor (20).

In a special embodiment, an additional internal thread (34) can be provided between a flange (30) and a deformable jaw section (32) of the anchor (20), the thread diameter (d ₁ ) Greater than the diameter (d ₂ ) of the internal thread (28) (see also Figure 2a). In this variant, the building element (26) is therefore also mounted on the load-bearing component (10) by means of its external thread screwed into the internal thread (34).

By the external thread (46) of the application device (40), the internal thread (28) is smaller The diameter α ensures that the application device is embedded in the correct area of the anchor (20) and the insertion end (22) is properly deformed. Then, the diameter of a component screw (which is placed after the application process) matches the additional internal thread (34) having a larger diameter d2.

Figures 2a-2c show a peg system (35) according to a first embodiment and a method of applying the cavity peg (18) according to Figure 1, wherein the anchor (20) is inserted into the pre-made according to Figure 2b. In the bore (12), the insertion end (22) is positioned in the component cavity (16) and the flange (30) formed at the joint end (24) is adjacent to the component surface (14).

Since the fixing system utilizes plastic deformation of the insertion end (22) instead of frictional engagement, the diameter of the drilling hole can be selected such that the peg can be easily inserted into the borehole.

The arrow (36) symbolically indicates that the flange (30) axially compresses the component surface (14) in Figure 2b. At the same time, the insertion end (22) is axially biased toward the joint end and is moved in pure motion, so that the anchor (20) is plastically deformed in the component cavity (16) [see Fig. 2c, arrow (38)].

During plastic deformation, the anchor (20) expands, causing the crotch portion (32) deformed in the component cavity (16) to lie against the bore (12) from behind.

Furthermore, as can be seen in Figures 2a-2c, an application device (40) is provided to carry out the method, which has a first device portion (42). Supported on the flange (30) of the anchor (20) when the anchor (20) is deformed, and has a second device portion (44) which is pure along the axial direction with respect to the first device portion (42) The movement is moved, and when the anchor (20) is deformed, it is directly or indirectly embedded on the insertion end (22) of the anchor (20). Here, the relative motion between the first device portion (42) and the second device portion (44) can be controlled by force and/or path.

In the illustrated embodiment, an external thread (46) is provided on the second device portion (44), screwed into the internal thread (28) of the anchor (20) (see Figures 2a, 2b) when causing a screw When connected, only the second device portion (44) is rotated, or the two device portions (42) (44) of the application device (40) are rotated relative to the anchor (20). In order to reduce the installation time, the application device (40) is preferably provided with a stud storage, so that the screwing between the application device (40) and the anchor (20) is automatically achieved after the application of a cavity bolt (18), without Refill with your hands.

The work of inserting the anchor (20) into the borehole (12) and the plastic deformation of the anchor (20) are then carried out using an application device (40). Here, the application device (40) is embedded on the flange (38) and the internal thread (28) of the anchor (20) according to Fig. 2c to axially insert the insertion end (22) relative to the joint end (24) Movement (see Figures 2b, 2c).

The application device (40), in particular the second device portion (44) of the application device (40), can then be unscrewed from the anchor (20). A cavity stud (18) is secured to the load bearing member (10) and can be used to mount the building member (26). After the second device portion (44) is unscrewed from the anchor (20), the next cavity peg (18) is preferably provided by the peg storage, and the second device portion (44) is automatically associated with the anchor (20) Screwing.

The above method can be empty mainly due to the purely mobile relative movement between the first device portion (42) of the application device (40) and the second device portion (44), and the use of the reservoir to replenish the cavity pegs (18). The cavity pegs (18) are applied very quickly.

Figure 3 shows a cavity peg (18) secured to a load bearing member (10) in accordance with another alternative embodiment. Here, the cavity stud (18) additionally includes an anchor rod (48) that is longitudinally movable in the anchor (20), wherein the anchor rod (48) has an axial head end (50) [it has A widened anchor head (52)] and an opposite coupling end (54) [it has a thread (56)].

The main method of applying the cavity stud (18) according to FIG. 3 and the above-mentioned FIG. The main method of applying the cavity studs (18) is the same, so reference is made to the description of Figures 1 and 2, only the different method details are explained below.

Similar to Figures 2a-2c, Figures 4a-4c show a stud system (35) according to a second embodiment and illustrate a method of applying the cavity stud (18) according to Figure 3.

Unlike the first embodiment, the insertion end (22) of the anchor (20) is biased toward the joint end (24) by the anchor rod (48) when the anchor (20) is deformed, in which case the applying device (40) The second device portion (44) has an internal thread (58) and is embedded on the flange (30) and the internal thread (56) of the anchor according to Figures 4b and 4c to insert the insertion end of the anchor (20) (12) Movement relative to its joint end (29). Here, the second device portion (44) is only indirectly [ie via the anchor rod (48)] embedded on the insertion end (22) of the anchor (20) to deform the anchor (20).

Unlike the first embodiment, the construction portion (26) is not fixed to the load-bearing member (10) by the internal thread (28) of the anchor (20), but utilizes the anchor thread (56). In order to prevent the anchor rod (48) from co-rotating in the anchor (20) when the building member (26) is screwed in, or the anchor (20) is co-rotating in the bore (12), the anchor rod (48) and the anchor rod (20) Between the anchorage (20) and the borehole (12), a stop-stop means (not shown) should be provided.

On the other hand, in the first embodiment of Fig. 1, only a stop means is provided between the anchor (20) and the bore (12).

According to Fig. 4a, a slot (60) is provided in the anchor (20), wherein the slot (60) extends in the longitudinal direction of the jaw (i.e. along the stud axis A). The slot (60) provides a reproducible deformation of the anchor (20) wherein the frame strip (62) between the slots (60) bulges radially outward. The deformable crotch section (32) thus expands and holds the bore (12) from the rear (see Figures 1 and 3).

A similar slot (60) is also provided in the first embodiment of Fig. 1, wherein the slot (60) Extending axially between the internal thread (28) and the flange (30) or between the internal thread (28) and the internal thread (34).

A particularly preferred method is to provide the application device (40) with a measuring device (64) that receives a force-path curve (66) when the anchor (20) is plastically deformed (see Figure 5), in a particularly preferred manner. The measuring device (64) compares the received power path curve (66) with a predeterminable reference curve (68) and if the received curve (66) is within a predetermined error band of the predetermined reference curve (68) (70) Or, within and/or outside of the program window (72), a characteristic signal is output, preferably an optical signal and/or an acoustic signal.

According to Figure 5, the received power-path curve (66) (indicated by the dashed line) is within the tolerance band (70) of the reference curve (68) and within the program window (72), so the installer utilizes a characteristic signal Or a dwelling signal is experienced after the application of the cavity pegs (18), the cavity pegs (18) are applied as intended and have full load carrying capacity. This echo allows the installer to immediately react to a cavity plug that has not been applied by the additional cavity pegs (18).

However, it is also possible to receive the force actually used, so that when a previously determined maximum force is reached (especially in the form of an interval), the application procedure can be considered a successful end. If this interval is not reached, an error message indicating that the application process has not been reached is output, and the installer can respond accordingly.

(10) ‧‧‧ (load-bearing) components

(12)‧‧‧Drilling

(14) ‧‧‧Component surface

(16)‧‧‧Component cavity

(18) ‧‧‧cavity studs

(20)‧‧‧ Anchorage

(22)‧‧‧ Inserted end

(24)‧‧‧ connector end

(26) ‧‧‧Building components

(28)‧‧‧ internal thread

(29)‧‧‧Connector

(30) ‧‧‧Front

(32) ‧‧‧ sections

(34)‧‧‧ internal thread

(35) ‧‧‧ Stud system

(36)‧‧‧ arrows

(38)‧‧‧ arrows

(40) ‧‧‧Applying device

(42) ‧‧‧ device part (first device part)

(44) ‧‧‧ device part (second device part)

(46)‧‧‧ External thread

(48)‧‧‧ Anchor

(50)‧‧‧Axial head end

(52)‧‧‧ Anchor head

(54)‧‧‧ coupling end

(56)‧‧‧Thread

(56)‧‧‧ internal thread

(60) ‧‧‧Slots

(62) ‧‧‧Box

(64)‧‧‧Measurement devices

(66)‧‧‧Power-path curve

(68) ‧ ‧ reference curve

(70) ‧ ‧ tolerance band

(72) ‧‧‧Program window

Figure 1 is a schematic view of a cavity stud secured to a load-bearing member in accordance with a first embodiment; Figures 2a-2c are a stud of the present invention having a cavity stud according to Figure 1. A schematic longitudinal section of the system showing three different stages of the method of the invention in which a cavity stud is applied; and Figure 3 is a cavity stud secured to a load bearing member in accordance with a second embodiment Figure 4a - 4c are schematic longitudinal cross-sectional views of a peg system of the present invention having a cavity stud according to Figure 3, showing the three different stages of the method of the invention applying a cavity peg.

Figure 5 is a power path relationship coordinate diagram having a measurement curve, a reference curve, an allowable error band, and a program window.

(10) ‧‧‧ (load-bearing) components

(12)‧‧‧Drilling

(14) ‧‧‧Component surface

(16)‧‧‧Component cavity

(18) ‧‧‧cavity studs

(20)‧‧‧ Anchorage

(22)‧‧‧ Inserted end

(24)‧‧‧ connector end

(26) ‧‧‧Building components

(28)‧‧‧ internal thread

(30) ‧‧‧Front

(32) ‧‧‧ sections

(34)‧‧‧ internal thread

(62) ‧‧‧Box

Claims (13)

A method for applying a cavity peg (18), the cavity peg (18) comprising an anchor (20) extending along a peg axis (A) and having an axial insertion end (22) And an opposite axial joint end (24), wherein the method comprises the steps of: (a) making a bore (12) in a torque-bearing member (10) that will be a component surface ( 14) in communication with a component cavity (16); (b) inserting the anchor (20) into the bore (12) such that the insertion end (22) is in the component cavity (16) and one is in the anchor The flange (30) formed on the joint end (24) of the cymbal (20) is adjacent to the component surface (14); (c) the insertion end (22) is axially biased and the insertion end (22) is along the axis Moving toward the joint end (24) causes the anchor (20) to plastically deform in the component cavity (16). The method of claim 1, wherein the anchor (20) expands during plastic deformation in step c), so that a crotch portion (32) deformed in the component cavity (16) is Live the hole (12). A method according to any one of the preceding claims, characterized in that an application device (40) is provided by which steps b) and c) are carried out. The method of claim 3, wherein the insertion end (22) of the anchor (20) is provided with an internal thread (28), wherein the applying device (40) is embedded in the flange in step c) (30) and the internal thread (28) of the anchor (20) to move the insertion end (22) axially relative to the joint end (24). The method of claim 4, wherein: in a method step d), the building member (26) utilizes the internal snail of the anchor (20) The pattern (28) (34) is fixed to the load-bearing member (10). The method of any one of claims 1 to 3, wherein the cavity stud (18) comprises an anchor rod (48) that is longitudinally received in the anchor (20), Wherein the anchor rod (48) has an axial head end (50) having a widened anchor width (52) and an opposite axial coupling end (54) having a thread (56), and Wherein the insertion end (22) of the anchor (20) is biased in the direction of the joint end (24) with the anchor rod (48) in step c). The method of claim 3, wherein the applying device (40) is embedded in the flange (30) and on the thread (56) of the anchor rod in step c) to make the anchor (20) The insertion end (22) is moved relative to its joint end (24). The method of claim 6 or 7, wherein in step d) a building member (26) is secured to the load-bearing member (10) by means of a thread (56) of the anchor rod. A method according to any one of the preceding claims, characterized in that an application device (40) is provided which is subjected to a load of a force-path curve (66) in step c). The method of claim 9, wherein: the applying device (40) compares the subjected force path curve (66) with a predeterminable reference curve (68), and when the withstand curve (66) is predetermined A characteristic signal is output as soon as the reference curve (68) allows the difference band (70) or within the program window (72). An application device for carrying out the method according to any one of the preceding claims, characterized in that: There is a first device portion (42) which is supported on the flange (30) of the anchor (20) in step c) and has a second device portion (44) which is relative to the first device portion (42) A purely mobile motion in the axial direction and directly or indirectly embedded in the insertion end (22) of the anchor (20) in step c). A peg system for carrying out the method of any one of the preceding claims 1 to 10, which has an application device of claim 11 and a cavity stud (18), which can be utilized The application device (40) is attached to a load-bearing member (10). A peg system according to claim 12, wherein the cavity stud (18) comprises an anchor (20) having a slot (60), wherein the slot (60) of the anchor (20) is along Extends in the direction of escapement.