A rotary back beam and loom

Abstract

The application discloses a rotary back beam and a loom, and relates to the technical field of textile equipment, which comprises a driving gear, the driving gear drives a first driven gear and a second driven gear through a transmission gear, the first driven gear is sleeved in a fixed beam port, the second driven gear is fixedly connected with one end of a swing beam, the swing beam is rotatably connected with one end of a connecting support, the other end of the connecting support is provided with a fixed shaft, the fixed shaft extends into a cavity of the fixed beam, and the fixed beam is relatively rotatable with the fixed shaft, so that the technical problem that the fixed beam and the swing beam of the loom are independently moved, the fixed beam and the swing beam are affected by warp tension, the back beam is shaken and the speed is different, the tension of the loom is unstable when beating, and the quality of cloth is affected is solved.

Description

Technical Field

[0001] This invention relates to the field of textile equipment technology, and in particular to a rotating back beam and a loom. Background Technology

[0002] During the fabric production process on a loom, the position of the back beam affects the warp tension, thus impacting fabric quality. For example, when weaving fine, high-density fabrics, moving the back beam forward increases warp tension, which is beneficial for clearing the shed. The back beam consists of a swing beam and a fixed beam. Currently, the swing beam and fixed beam operate independently. When the warp yarn passes through the swing beam and fixed beam, its own tension causes a pulling force on the swing beam and fixed beam, resulting in different rotational speeds or even reversal of the swing beam and fixed beam. At this time, the entire back beam vibrates. The force received by the warp yarns is not only affected by the shedding movement, but also by the irregular vibration of the back beam during weft insertion. This leads to unstable tension during weft insertion. When weaving tension-sensitive fabrics, hidden defects may appear on the fabric surface, affecting the quality of the produced fabric.

[0003] In summary, developing a rotating rear beam that ensures stable rotation of both the fixed and swing beams and avoids vibration of the rear beam is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a rotating back beam and a loom that solves the technical problem that the back beam is affected by the elasticity of the warp yarns, resulting in different rotation speeds between the fixed beam and the swing beam, causing the entire back beam to vibrate and affecting the quality of the fabric.

[0005] To achieve the above objectives, the present invention provides a rotating rear beam, characterized in that it includes a driving gear, which drives a first driven gear and a second driven gear through a transmission gear. The first driven gear is fixedly connected to the inner cavity of the fixed beam, and the second driven gear is fixedly connected to the end of the swing beam. The swing beam is rotatably connected to one end of a connecting support, and a fixed shaft is provided at the other end of the connecting support. The fixed shaft extends into the inner cavity of the fixed beam, and the fixed beam rotates relative to the fixed shaft.

[0006] Preferably, the connecting support is provided with a connecting hole and a connecting groove, a fixed shaft passes through the connecting hole, a first bearing is clamped between the fixed beam and the fixed shaft, the connecting support is provided with an installation groove, the swing beam extends into the installation groove, a second bearing is clamped between the swing beam and the inner wall of the installation groove, the fixed beam and the swing beam can rotate relative to the connecting support, and their rotation axes are parallel and perpendicular to the connecting support.

[0007] Preferably, the first driven gear is located between the connecting support and the end face of the fixed beam. A cylindrical tube extends from the end face of the first driven gear along its axial direction. The cylindrical tube extends into the fixed beam, and the outer wall of the cylindrical tube fits against the inner wall of the fixed beam. A fixing hole penetrating the side wall of the cylindrical tube is provided on the end face of the first driven gear. A tapered sleeve is provided at the end of the fixing hole. The fixing hole extends and penetrates the tapered sleeve. The end face of the tapered sleeve that contacts the fixing hole is an inclined surface. A fixing bolt is provided in the fixing hole. The fixing bolt is screwed toward the side that extends into the inner cavity of the fixed beam. The fixing hole and the inclined surface of the tapered sleeve abut and slide. The side wall of the tapered sleeve moves toward the outer periphery of the fixed beam. The tapered sleeve is tightened between the side wall of the fixed beam and the cylindrical tube. The tapered sleeve is fixedly connected to the fixed beam.

[0008] Preferably, the swing beam tapers towards the end near the connecting support to form a stepped surface. The taper portion of the swing beam passes through the inner hole of the second driven gear and the second bearing. The tooth diameter of the second driven gear is larger than the diameter of the mounting slot. The second driven gear is clamped between the stepped surface and the end face of the mounting slot. A connector passes through the end face of the second driven gear, and the end of the connector extends into the stepped surface. The connector fixes the second driven gear and the swing beam together.

[0009] Preferably, a mounting seat is provided on the side wall of the connecting support. The mounting seat includes a first folding plate and a second folding plate. The first folding plate is perpendicular to the second folding plate and fits against the side wall of the connecting support. A fixing pin is provided on the first folding plate, and the fixing pin connects the connecting support and the mounting seat. A transmission gear and a driving gear are rotatably provided on the side wall of the second folding plate. The transmission gear meshes with the first driven gear and the second driven gear respectively. The first driven gear and the second driven gear drive the fixed beam and the swing beam to rotate.

[0010] Preferably, a reducer is provided on the side of the second folding plate away from the transmission gear, the driving gear is connected to the gear shaft inside the reducer, a motor is provided on the side wall of the reducer, the motor is connected to the input shaft of the reducer, and the motor is used to provide power.

[0011] Preferably, a positioning sleeve is provided between the first driven gear and the fixed shaft. The length of the positioning sleeve is greater than the length of the first driven gear. The positioning sleeve extends out of the fixed beam end and abuts against the connecting support, so that the distance between the first driven gear and the connecting support is set. The end face of the second driven gear extends with an annular boss near the end of the mounting groove. The annular boss abuts against the end face of the second bearing, so that the distance between the second driven gear and the mounting groove is set.

[0012] Preferably, a retaining ring is provided at the end of the fixed shaft away from the first bearing. The retaining ring abuts against the first bearing and is used to determine the relative position of the fixed shaft and the fixed beam.

[0013] Preferably, a bracket is connected to the end of the fixed shaft away from the fixed beam, and the bracket fixes the fixed beam to the wall panel.

[0014] A loom comprising the aforementioned rotating back beam.

[0015] Compared to the aforementioned background technology, the rotating rear beam provided by this invention includes a driving gear that meshes with a transmission gear, which in turn meshes with a first driven gear and a driven gear. The rotation axes of all gears are parallel to each other. One end face of the first driven gear is fitted into the port of the fixed beam. A tapered sleeve is provided inside the fixed beam. After the first driven gear extends into the fixed beam, the end face of the first driven gear increases the size of the tapered sleeve, which then tensions the first driven gear and the fixed beam together. The first driven gear rotates synchronously with the fixed beam. The second driven gear is fixedly connected to the swing beam, and the second driven gear also drives the swing beam to move synchronously. Furthermore, one end of the swing beam with the second driven gear extends into a connecting support, and the swing beam rotates relative to the connecting support. The other end of the connecting support... A fixed shaft is inserted into the cavity of a fixed beam. The fixed beam rotates relative to the fixed shaft. During the operation of the driving gear, the power is transmitted from the driving gear to the transmission gear. The transmission gear drives the fixed beam and the swing beam, which are equipped with the first gear and the second gear, to rotate. The transmission gear meshes with the first driven gear and the second driven gear through its teeth. The rotational speeds of the first driven gear and the second driven gear are determined by the transmission gear. That is, when the warp yarn generates tension on the fixed beam and the swing beam, the first driven gear and the second driven gear rotate at the same speed and do not change. The first driven gear and the second driven gear mesh with the transmission gear respectively. The distance between the first driven gear and the second driven gear is determined. No vibration occurs between the fixed beam and the swing beam connected to both. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the rotating rear beam provided in an embodiment of the present invention;

[0018] Figure 2 This is a rear view provided for an embodiment of the present invention;

[0019] Figure 3 This is a front view provided for an embodiment of the present invention;

[0020] Figure 4 This is a partial enlarged view of region A provided in an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the internal structure of the reducer provided in an embodiment of the present invention;

[0022] Figure 6This is a magnified view of region B provided in an embodiment of the present invention.

[0023] Among them, 1-connecting support; 2-fixed shaft; 3-fixed beam; 4-swinging beam; 5-first driven gear; 6-cone sleeve; 7-second driven gear; 8-mounting seat; 9-reducer; 10-motor; 11-transmission gear; 12-drive gear; 13-gear shaft; 14-positioning sleeve; 15-first bearing; 16-second bearing; 17-annular boss. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This invention provides a rotating rear beam, as shown in the attached specification. Figure 1 To be continued Figure 3The aforementioned configuration includes a drive gear 12, which outputs power to the transmission gear 11. The transmission gear 11 meshes with a first driven gear 5 and a second driven gear 7, which rotate at the same speed. One end face of the first driven gear 5 extends into the inner cavity of the fixed beam 3. A tapered sleeve 6 is provided in the inner cavity of the fixed beam 3. As the first driven gear 5 penetrates the fixed beam 3, it connects to the tapered sleeve 6, increasing the size of the tapered sleeve 6. The tapered sleeve 6 is tightened within the inner cavity of the fixed shaft 2, and its side wall is tightly attached to the inner wall of the fixed beam 3. The tapered sleeve 6 fixes the first driven gear 5 to the fixed beam 3. The second driven gear 7 is fixedly connected to a swing beam 4, which rotates together with the second driven gear 7. One end of the swing beam 4 connected to the second driven gear 7 extends into the connecting support 1, allowing the swing beam 4 to rotate relative to the connecting support 1. The other end of the connecting support 1 is provided with the fixed shaft 2. In addition, the fixed shaft 2 extends into the inner cavity of the fixed beam 3, and the fixed beam 3 can rotate relative to the fixed shaft 2. When the drive gear 12 is running, the drive gear 12 drives the transmission gear 11 to rotate. When the warp yarn is transmitted by the fixed beam 3 and the swing beam 4, the warp yarn pulls the fixed beam 3 or the swing beam 4 through its own tension. Since the first driven gear 5 and the second driven gear 7 are respectively meshed with the transmission gear 11, the first driven gear 5 and the second driven gear 7 have the same speed, and the speed is determined only by the transmission gear 11. In addition, the first driven gear 5 and the second driven gear 7 are both meshed with the transmission gear 11, that is, the relative positions of the first driven gear 5, the second driven gear 7 and the transmission gear 11 are determined, and the distance between the fixed beam 3 connected to the first driven gear 5 and the second driven gear 7 and the swing beam 4 is determined. In other words, there is no vibration between the fixed beam 3 and the swing beam 4, which improves the qualified rate of the produced fabric.

[0027] It should be noted that the connecting support 1 is provided with a connecting hole and a connecting groove. The connecting hole is used to install a fixed shaft 2. One end of the fixed shaft 2 extends into the fixed beam 3 and clamps the first bearing 15 with the inner wall of the fixed beam 3. The first bearing 15 is used to realize the rotation of the fixed shaft 2 within the fixed beam 3. A second bearing 16 is provided in the connecting groove. The end of the swing beam 4 extends into the connecting groove and fits with the inner hole of the second bearing 16. The second bearing 16 is used to realize the rotation of the swing beam 4 relative to the connecting groove. In addition, the rotation axes of the swing beam 4 and the fixed beam 3 are parallel to each other, and the rotation axes are perpendicular to and parallel to the connecting support 1.

[0028] Furthermore, the first driven gear 5 is located between the end faces of the connecting support 1 and the fixed beam 3. The end face of the first driven gear 5 facing away from the connecting support 1 has a cylindrical tube extending along its axial direction. This cylindrical tube is used to extend into the inner cavity of the fixed beam 3, and its outer wall can fit against the inner wall of the fixed beam 3. To ensure that the first driven gear 5 can drive the fixed beam 3 to rotate, a fixing hole is provided on the end face of the first driven gear 5. The axis of the fixing hole is parallel to the axis of the first driven gear 5. The fixing hole extends from the end face of the first driven gear 5 and penetrates the side wall of the cylindrical tube. Please refer to the appendix of the instruction manual. Figure 4 A tapered sleeve 6 is provided at the end of the fixing hole. The fixing hole continues to extend and the tapered sleeve 6 passes through. The end face of the first driven gear 5 abutting against the tapered sleeve 6 is a mutually fitting inclined surface. The direction of the reduction in the size of the inclined surface is towards the end of the fixing beam 3. A fixing bolt is installed in the fixing hole. The length of the fixing bolt is greater than the length of the first driven gear, that is, part of the fixing bolt extends out of the inclined surface of the first driven gear 5 and is screwed into the fixing hole of the tapered sleeve 6. During the process of the fixing bolt being screwed into the fixing hole of the tapered sleeve 6, the fixing bolt generates a relative force on the tapered sleeve 6 and the first driven gear 5. Force is applied to the inclined surface where the tapered sleeve 6 abuts against the first driven gear 5. At this time, the inclined surface of the tapered sleeve 6 causes the side wall of the tapered sleeve 6 to tend to move towards the outer periphery of the fixed beam 3, increasing the thickness of the side wall of the tapered sleeve 6. Since the first driven gear 5 is a rigid material, it does not deform, and the distance between the fixing hole and the side wall of the fixed beam 3 remains unchanged. At this time, the thickness of the side wall of the tapered sleeve 6 increases, and the side wall of the tapered sleeve 6 fits tightly against the inner wall of the fixed beam 3. The tapered sleeve 6 is tightened and fixed inside the fixed beam 3. Similarly, the first driven gear 5, which is connected to the tapered sleeve 6 by the fixing bolt, is fixedly connected to the swing beam 4.

[0029] Please refer to the instruction manual appendix. Figure 1 The end of the swing beam 4 tapers towards the connecting support 1, forming a stepped surface on the swing beam 4. The tapered part of the swing beam 4 can pass through the second driven gear 7 and the second bearing 16 and fit against their inner walls. The tooth diameter of the second driven gear 7 is larger than the diameter of the mounting groove, and the outer diameter of the second bearing 16 is equal to the diameter of the mounting groove. That is, the second bearing is tightly fitted into the mounting groove, while the second driven gear 7 is blocked outside the port of the mounting groove. The second driven gear 7 is set between the stepped surface and the port of the mounting groove. In addition, a connector is provided on the end face of the second driven gear 7. The connector passes through the second driven gear 7, so that its end passes through the stepped surface, fixing the second driven gear 7 to the swing beam 4. When the second driven gear 7 rotates, the swing beam 4 can move synchronously. The second driven gear 7 fitted at the end of the swing beam 4 ensures that the rotation process of the swing beam 4 is stable and reliable.

[0030] Please refer to the instruction manual appendix. Figure 3A mounting base 8 is provided on the side wall of the connecting support 1. The mounting base 8 includes a first folding plate and a second folding plate, which are perpendicular to each other. The side wall of the first folding plate is attached to the side wall of the connecting support 1, and a fixing pin is provided on the first folding plate to fix the mounting base 8 to the connecting support 1. A drive gear 12 and a transmission gear 11 are rotatably provided on the side wall of the second folding plate. The drive gear 12 is located diagonally above the transmission gear 11 and meshes with the transmission gear 11. Below the transmission gear 11, a first driven gear 5 and a second driven gear 7 are respectively meshed, and the first driven gear 5 and the second driven gear 7 are spaced apart. The drive gear 12 transmits power to the transmission gear 11, which drives the first driven gear 5 and the second driven gear 7 to rotate, and the fixed beam 3 and the swing beam 4 connected thereto rotate.

[0031] Please refer to the instruction manual appendix. Figure 2 With appendix Figure 3 A reducer 9 is provided on the side wall of the second folding plate opposite to the transmission gear 11. The rotating shaft of the driving gear 12 passes through the second folding plate and extends into the reducer 9. The rotating shaft of the driving gear 12 is connected to the gear shaft 13 of the reducer 9. In addition, a motor 10 is provided on the side wall of the reducer 9. The motor 10 is connected to the input shaft of the reducer 9. The operation of the motor 10 provides power to the reducer 9. The reducer 9 adjusts the speed of the input shaft according to a certain ratio and transmits the appropriate speed to the driving gear 12 through the gear shaft 13.

[0032] Please refer to the instruction manual appendix. Figure 4 With appendix Figure 6 A positioning sleeve 14 is clamped between the first driven gear 5 and the fixed shaft 2. The length of the positioning sleeve 14 along the axis of the fixed shaft 2 is greater than the length of the first driven gear 5. That is, after one end face of the first driven gear 5 and the positioning sleeve 14 abuts against the end face of the first bearing 15, the end of the positioning sleeve 14 away from the first bearing 15 extends out of the port of the first driven gear 5. The positioning sleeve 14 abuts against the end face of the connecting support 1. In other words, the first driven gear 5 and the connecting support 1 are spaced apart. The positioning sleeve 14 restricts the connecting support 1 to the outside of the fixed beam 3, preventing the first driven gear 5 from rotating. During the process, it comes into contact with the connecting support 1, causing wear on the parts. Similarly, along the axis of the second driven gear 7, an annular boss 17 extends from the end face of the second driven gear 7 towards the side closer to the second driven gear 7. The annular boss 17 is coaxially arranged with the second driven gear 7, and the size of the annular boss 17 is much smaller than the diameter of the second driven gear 7. The annular boss 17 abuts against the end face of the second bearing 16. The annular boss 17 can rotate together with the second bearing 16, and there is no relative movement between the two. The annular boss 17 sets the distance between the second driven gear 7 and the end face of the mounting groove to avoid wear between the parts.

[0033] In addition, the fixed shaft 2 is connected to a bracket at the end opposite to the connecting support 1. The bracket is used to connect the wall panel. The fixed shaft 2 sets the rotating rear beam as a whole on the target work position through the bracket.

[0034] Accordingly, the present invention also provides a loom equipped with the aforementioned rotating rear beam. When the loom is in operation, the motor 10 outputs power to the reducer 9, and the reducer 9 outputs the adjusted rotational speed to the drive gear 12. The drive gear 12 drives the transmission gear meshing with it, and the transmission gear 11 drives the first driven gear 5 and the second driven gear 7 to rotate respectively. Similarly, the fixed beam 3 and the swing beam 4 rotate accordingly. Since the first driven gear 5 and the second driven gear 7 mesh with the transmission gear 11, the relative positions of the three after meshing are determined, that is, the distance between the first driven gear 5 and the second driven gear 7 remains unchanged. Therefore, when the warp yarn applies tension to the swing beam 4 and the fixed beam 3, the distance between the swing beam 4 and the fixed beam 3 remains unchanged, and the rotating rear beam does not vibrate. In addition, the rotational speeds of the first driven gear 5 and the second driven gear 7 are both determined by the transmission gear 11, which ensures that the rotational speeds of the two are always the same. Changes in warp yarn tension will no longer cause different loom speeds or the rear beam to reverse.

[0035] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A rotating rear beam, characterized in that, Includes a drive gear (12), which drives a first driven gear (5) and a second driven gear (7) through a transmission gear (11). The first driven gear (5) is fixedly connected to the inner cavity of the fixed beam (3), and the second driven gear (7) is fixedly connected to the end of the swing beam (4). The swing beam (4) is rotatably connected to one end of the connecting support (1), and a fixed shaft (2) is provided at the other end of the connecting support (1). The fixed shaft (2) extends into the inner cavity of the fixed beam (3), and the fixed beam (3) rotates relative to the fixed shaft (2). The first driven gear (5) is located between the connecting support (1) and the end face of the fixed beam (3). A cylindrical tube extends from the end face of the first driven gear (5) along its axial direction. The cylindrical tube extends into the fixed beam (3). The outer wall of the cylindrical tube is in contact with the inner wall of the fixed beam (3). A fixing hole is provided on the end face of the first driven gear (5) that penetrates the side wall of the cylindrical tube. A tapered sleeve (6) is provided at the end of the fixing hole. The fixing hole extends and passes through the tapered sleeve (6). The end face of the tapered sleeve (6) that contacts the fixing hole is an inclined surface. A fixing bolt is provided in the fixing hole. The fixing bolt is screwed toward the side that extends into the inner cavity of the fixed beam (3). The fixing hole abuts against the inclined surface of the tapered sleeve (6) and slides. The side wall of the tapered sleeve (6) moves toward the outer periphery of the fixed beam (3). The tapered sleeve (6) is tightened between the side wall of the fixed beam (3) and the cylindrical tube. The tapered sleeve (6) is fixedly connected to the fixed beam (3). The connecting support (1) has a mounting seat (8) on its side wall. The mounting seat (8) includes a first folding plate and a second folding plate. The first folding plate is perpendicular to the second folding plate. The first folding plate is in contact with the side wall of the connecting support (1). A fixing pin is provided on the first folding plate. The fixing pin connects the connecting support (1) and the mounting seat (8). The transmission gear (11) and the driving gear (12) are rotatably provided on the side wall of the second folding plate. The transmission gear (11) meshes with the first driven gear (5) and the second driven gear (7) respectively. The first driven gear (5) and the second driven gear (7) drive the fixed beam (3) and the swing beam (4) to rotate.

2. The rotating rear beam according to claim 1, characterized in that, The connecting support (1) is provided with a connecting hole and a connecting groove. The fixed shaft (2) passes through the connecting hole. A first bearing (15) is clamped between the fixed beam (3) and the fixed shaft (2). The connecting support (1) is provided with an installation groove. The swing beam (4) extends into the installation groove. A second bearing (16) is clamped between the swing beam (4) and the inner wall of the installation groove. The fixed beam (3) and the swing beam (4) can rotate relative to the connecting support (1). Their rotation axes are parallel and perpendicular to the connecting support (1).

3. The rotating rear beam according to claim 2, characterized in that, The swing beam (4) gradually tapers towards the end near the connecting support (1) to form a stepped surface. The tapered part of the swing beam (4) passes through the inner hole of the second driven gear (7) and the second bearing (16). The tooth diameter of the second driven gear (7) is larger than the diameter of the mounting slot. The second driven gear (7) is clamped between the stepped surface and the end face of the mounting slot. A connector passes through the end face of the second driven gear (7). The end of the connector extends into the stepped surface. The connector fixes the second driven gear (7) and the swing beam (4) together.

4. The rotating rear beam according to claim 3, characterized in that, A reducer (9) is provided on the side of the second folding plate away from the transmission gear (11). The driving gear (12) is connected to the gear shaft (13) inside the reducer (9). A motor (10) is provided on the side wall of the reducer (9). The motor (10) is connected to the input shaft of the reducer (9). The motor (10) is used to provide power.

5. The rotating rear beam according to claim 4, characterized in that, A positioning sleeve (14) is fitted between the first driven gear (5) and the fixed shaft (2). The length of the positioning sleeve (14) is greater than the length of the first driven gear (5). The positioning sleeve (14) extends out of the port of the fixed beam (3) and abuts against the connecting support (1), so that the distance between the first driven gear (5) and the connecting support (1) is set. An annular boss (17) extends from the end face of the second driven gear (7) to the end near the mounting groove. The annular boss (17) abuts against the end face of the second bearing (16), so that the distance between the second driven gear (7) and the mounting groove is set.

6. The rotating rear beam according to claim 4, characterized in that, The fixed shaft (2) has a retaining ring at the end opposite to the first bearing (15). The retaining ring abuts against the first bearing (15) and is used to determine the relative position of the fixed shaft (2) and the fixed beam (3).

7. The rotating rear beam according to claim 6, characterized in that, The fixed shaft (2) is connected to a support at one end away from the fixed beam (3), and the support fixes the fixed beam (3) to the wall panel.

8. A loom, characterized in that, Includes the rotating rear beam as described in any one of claims 1-7.

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