Steel pipe rotating transition carriage with rollover prevention function

Abstract

The utility model relates to the technical field of steel pipe transferring equipment, in particular to a steel pipe rotating transverse moving vehicle with a rollover prevention function. Comprising a transverse moving support, a rotating support arranged above the transverse moving support, a steel pipe lifting device arranged on the rotating support, and a rotating device arranged between the transverse moving support and the rotating support and used for driving the rotating support to rotate relative to the transverse moving support. The walking device and the anti-overturning device are arranged below the transverse moving support, the walking device comprises two parallel guide rails, walking wheel sets movably arranged on the guide rails and a walking driving mechanism used for driving the walking wheel sets to move, the anti-overturning device is arranged between the transverse moving support and the guide rails, one end of the anti-overturning device is connected with the transverse moving support, and the other end of the anti-overturning device is connected with the transverse moving support. And the other end is in clamping fit with the guide rail. According to the steel pipe rotating transverse moving vehicle with the rollover prevention function, the transverse moving support is clamped and matched with the guide rails through the rollover prevention device, and the situation of vehicle rollover can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of steel pipe transfer equipment, specifically a steel pipe rotating and transverse transfer vehicle with anti-tipping function. Background Technology

[0002] During the expansion of steel pipes, especially for long pipes with large diameters, a steel pipe rotating and traversing trolley is needed to move the pipe and rotate it 180 degrees to complete the expansion process at both ends. Current steel pipe rotating and traversing trolleys use pulleys and guide rails to move the pipes. However, if the position of the pipe on the trolley deviates from the intended position during transport, uneven force distribution can easily occur. If this uneven force distribution is significant, the pulleys may detach from the guide rails, posing a risk of tipping over. Utility Model Content

[0003] The purpose of this utility model is to provide a steel pipe rotating and transverse vehicle with anti-tipping function, which solves the problem that the pulleys of the existing steel pipe rotating and transverse vehicle are prone to detach from the guide rail when the force is uneven, thus causing the risk of tipping over.

[0004] To solve the above problems, the present invention provides the following technical solution:

[0005] A steel pipe rotating and traversing vehicle with anti-rollover function includes a traversing support, a rotating support disposed above the traversing support, a steel pipe lifting device disposed on the rotating support, a rotating device disposed between the traversing support and the rotating support for driving the rotating support to rotate relative to the traversing support, and a traveling device and an anti-rollover device disposed below the traversing support. The traveling device includes two parallel guide rails, a set of traveling wheels movably disposed on the guide rails, and a traveling drive mechanism for driving the traveling wheels to move. The anti-rollover device is disposed between the traversing support and the guide rails, with one end connected to the traversing support and the other end having a clamping engagement with the guide rails.

[0006] As described above, a steel pipe rotating and traversing vehicle with anti-rollover function includes a guide rail comprising a guide portion, a mounting portion disposed below the guide portion, and a connecting portion connecting the guide portion and the mounting portion. The width of the guide portion is greater than the width of the connecting portion, and the anti-rollover device is provided with a connecting groove that mates with the guide portion.

[0007] As described above, a steel pipe rotating and traversing vehicle with anti-rollover function includes an anti-rollover device comprising a connecting module connected to the traversing bracket and two opposing clamping arms disposed at the lower end of the connecting module, wherein the connecting groove is formed between the two clamping arms, and each clamping arm includes a first clamping plate disposed beside the guide portion and a second clamping plate disposed below the guide portion.

[0008] As described above, a steel pipe rotating transverse vehicle with anti-rollover function includes an anti-rollover device comprising a scraper connected to the connecting module.

[0009] As described above, a steel pipe rotating transverse vehicle with anti-rollover function has four anti-rollover devices provided below the transverse support. Two of the anti-rollover devices are spaced apart below the transverse support along the extension direction of any one of the guide rails, and two of the anti-rollover devices are spaced apart below the transverse support along the extension direction of the other guide rail.

[0010] As described above, in a steel pipe rotating and traversing vehicle with anti-rollover function, the traveling wheel set includes a driving wheel and a driven wheel spaced apart along the extension direction of the guide rail, and the driving wheel is connected to the traveling drive mechanism.

[0011] As described above, a steel pipe rotating and traversing vehicle with anti-rollover function is provided with a tie beam device on the rotating support. The tie beam device includes a first outer support, a first inner support, a second inner support, and a second outer support arranged sequentially at intervals along the length direction of the rotating support. A main beam is provided between the first inner support and the second inner support. Tie beams are hinged between the first outer support and the first inner support, as well as between the second outer support and the second inner support.

[0012] As described above, a steel pipe rotating and traversing vehicle with anti-rollover function includes a steel pipe lifting device comprising a lifting module, a hydraulic drive mechanism for driving the lifting module to rise and fall, and lifting guide mechanisms disposed on both sides of the hydraulic drive mechanism. Two steel pipe lifting devices are spaced apart on the rotating support along the length direction of the rotating support, and a steel pipe rotating roller is disposed between the two steel pipe lifting devices. The rotation axis of the steel pipe rotating roller is perpendicular to the length direction of the rotating support.

[0013] As described above, a steel pipe rotating and traversing vehicle with anti-tipping function includes a rotating device comprising a large gear mounted on the traversing support, a small gear meshing with the large gear, and a rotating drive motor mounted on the rotating support. The output end of the rotating drive motor is connected to the small gear to drive the small gear to rotate. The rotating device also includes casters mounted on the rotating support and an annular slide rail mounted on the traversing support. When the rotating support rotates relative to the traversing support, the casters move along the annular slide rail.

[0014] As described above, a steel pipe rotating and traversing vehicle with anti-rollover function includes a shock-absorbing device between the traversing support and the rotating support. The shock-absorbing device includes a first shock-absorbing block on the traversing support and a first shock-absorbing module on the rotating support. The first shock-absorbing block has a first shock-absorbing baffle coplanar with the rotation axis of the rotating support, and the first shock-absorbing module has a first shock-absorbing inclined surface coplanar with the rotation axis of the rotating support. When the rotating support rotates 180 degrees relative to the traversing support in the forward direction, the first shock-absorbing baffle and the first shock-absorbing inclined surface are in contact. The shock-absorbing device also includes a second shock-absorbing block on the traversing support and a second shock-absorbing module on the rotating support. The second shock-absorbing block has a second shock-absorbing baffle coplanar with the rotation axis of the rotating support, and the second shock-absorbing module has a second shock-absorbing inclined surface coplanar with the rotation axis of the rotating support. When the rotating support rotates 180 degrees relative to the traversing support in the reverse direction, the second shock-absorbing baffle and the second shock-absorbing inclined surface are in contact.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] This utility model provides a steel pipe rotating transverse vehicle with anti-tipping function. Because the transverse support is clamped and cooperated with the guide rail through the anti-tipping device, when the steel pipe rotating transverse vehicle is subjected to uneven force, the transverse support and the guide rail can still maintain a stable connection, and the walking wheel set and the guide rail can still maintain a stable connection, thereby effectively preventing the occurrence of rollover. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the steel pipe rotating transverse vehicle with anti-rollover function according to an embodiment of the present invention after rotating 180 degrees in the forward direction.

[0019] Figure 2 This is a schematic diagram of the structure of the steel pipe rotating transverse vehicle with anti-rollover function according to an embodiment of the present invention after rotating 180 degrees in the opposite direction.

[0020] Figure 3 This is an exploded view of the steel pipe rotating and traversing vehicle with anti-rollover function according to an embodiment of the present utility model.

[0021] Figure 4This is a schematic diagram of the connection structure between the first shock-absorbing block and the first shock-absorbing module of the steel pipe rotating and traversing vehicle with anti-rollover function according to an embodiment of this utility model.

[0022] Figure 5 This is a schematic diagram of the connection structure between the second shock-absorbing block and the second shock-absorbing module of the steel pipe rotating and traversing vehicle with anti-rollover function according to an embodiment of this utility model.

[0023] The corresponding numbers for the attached figures are as follows:

[0024] 1. Lateral support; 2. Rotating support; 21. Steel pipe rotating roller; 3. Steel pipe lifting device; 31. Lifting module; 32. Hydraulic drive mechanism; 33. Lifting guide mechanism; 4. Rotating device; 41. Large gear; 42. Small gear; 43. Rotary drive motor; 44. Casters; 45. Circular slide rail; 5. Traveling device; 51. Guide rail; 511. Guide part; 512. Mounting part; 513. Connecting part; 52. Traveling wheel set; 521. Drive wheel; 522. Driven wheel; 53. Traveling drive mechanism; 6. Anti-tipping device; 61. Connecting... 62. Connecting module; 62. Clamping arm; 621. First clamping plate; 622. Second clamping plate; 63. Connecting groove; 64. Scraper; 7. Tie beam device; 71. First outer support; 72. First inner support; 73. Second inner support; 74. Second outer support; 75. Main beam; 76. Tie beam; 9. Vibration damping device; 91. First vibration damping block; 911. First vibration damping baffle; 92. First vibration damping module; 921. First vibration damping inclined surface; 93. Second vibration damping block; 931. Second vibration damping baffle; 94. Second vibration damping module; 941. Second vibration damping inclined surface. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see the appendix Figure 1 To be continued Figure 5This embodiment provides a steel pipe rotating and traversing vehicle with anti-rollover function, including a traversing support 1, a rotating support 2 disposed above the traversing support 1, a steel pipe lifting device 3 disposed on the rotating support 2, a rotating device 4 disposed between the traversing support 1 and the rotating support 2 for driving the rotating support 2 to rotate relative to the traversing support 1, and a traveling device 5 and an anti-rollover device 6 disposed below the traversing support 1. The traveling device 5 includes two parallel guide rails 51, a traveling wheel set 52 movably disposed on the guide rails 51, and a traveling drive mechanism 53 for driving the traveling wheel set 52 to move. The anti-rollover device 6 is disposed between the traversing support 1 and the guide rails 51. One end of the anti-rollover device 6 is connected to the traversing support 1, and the other end is provided with a clamping engagement with the guide rails 51. This embodiment provides a steel pipe rotating transverse vehicle with anti-rollover function. Since the transverse support 1 is clamped and cooperated with the guide rail 51 through the anti-rollover device 6, when the steel pipe rotating transverse vehicle is subjected to uneven force, the transverse support 1 and the guide rail 51 can still maintain a stable connection, and the walking wheel set 52 and the guide rail 51 can still maintain a stable connection, thereby effectively preventing the occurrence of rollover.

[0027] Furthermore, the guide rail 51 includes a guide portion 511, a mounting portion 512 disposed below the guide portion 511, and a connecting portion 513 connecting the guide portion 511 and the mounting portion 512. The width of the guide portion 511 is greater than the width of the connecting portion 513. The anti-tipping device 6 is provided with a connecting groove 63 that mates with the guide portion 511. Through the cooperation between the guide portion 511 and the connecting groove 63, a stable connection is formed between the guide rail 51 and the anti-tipping device 6.

[0028] Furthermore, in some embodiments, the anti-tipping device 6 is an integrally formed structure. In some embodiments, the anti-tipping device 6 includes a connecting module 61 connected to the transverse support 1, and two opposing clamping arms 62 disposed at the lower end of the connecting module 61. A connecting groove 63 is formed between the two clamping arms 62. Each clamping arm 62 includes a first clamping plate 621 disposed beside the guide portion 511 and a second clamping plate 622 disposed below the guide portion 511. The clamping arms 62 are detachably connected to the connecting module 61 by bolts. The clamping arms 62 on both sides of the connecting module 61 effectively limit the lateral movement of the guide portion 511 through the first clamping plate 621 and effectively limit the downward movement of the guide portion 511 through the second clamping plate 622. This effectively prevents the guide portion 511 from disengaging from the side or from the bottom from the connecting groove 63, ensuring a stable connection between the transverse support 1 and the guide rail 51 even when encountering uneven force on the rotating transverse vehicle.

[0029] Furthermore, the anti-tipping device 6 includes a scraper 64 connected to the connecting module 61. One end of the scraper 64 is fixedly connected to the connecting module 61 via a screw connector, and the lower end of the scraper 64 extends to contact the guide rail 51. When the steel pipe rotating and traversing trolley moves along the guide rail 51, the scraper 64 can scrape off dust or other impurities on the guide rail 51, which helps to ensure the cleanliness of the moving path and ensures the smooth movement of the steel pipe rotating and traversing trolley.

[0030] Furthermore, four anti-tipping devices 6 are provided below the transverse support 1. Two anti-tipping devices 6 are spaced apart below the transverse support 1 along the extension direction of any one of the guide rails 51, and two anti-tipping devices 6 are spaced apart below the transverse support 1 along the extension direction of the other guide rail 51. The four anti-tipping devices 6 work together at the four corners of the transverse support 1, further ensuring a stable connection between the transverse support 1 and the guide rails 51.

[0031] Furthermore, the walking wheel assembly 52 includes a driving wheel 521 and a driven wheel 522 spaced apart along the extension direction of the guide rail 51. The driving wheel 521 is connected to the walking drive mechanism 53. The walking drive mechanism 53 is a walking drive motor. The two corresponding driving wheels 521 on the two parallel guide rails 51 are connected to the walking drive motor through a rotating shaft and a coupling. A single walking drive motor can drive the two driving wheels 521 to rotate synchronously, thereby conveniently and efficiently moving the walking wheel assembly 52 along the guide rail 51.

[0032] Furthermore, the rotating support 2 is equipped with a tie beam device 7, which includes a first outer support 71, a first inner support 72, a second inner support 73, and a second outer support 74 arranged sequentially at intervals along the length of the rotating support 2. A main beam 75 is provided between the first inner support 72 and the second inner support 73. Tie beams 76 are hinged between the first outer support 71 and the first inner support 72, and between the second outer support 74 and the second inner support 73. The tie beam device 7 can provide tension at both ends of the rotating support 2 along its length, making the overall structure of the rotating support 2 more stable.

[0033] Furthermore, the steel pipe lifting device 3 includes a lifting module 31, a hydraulic drive mechanism 32 for driving the lifting module 31 to rise and fall, and lifting guide mechanisms 33 located on both sides of the hydraulic drive mechanism 32. The lifting guide mechanism 33 includes a sleeve and a guide column located inside the sleeve. The sleeve is fixedly connected to the rotating bracket 2, and the guide column is connected to the lifting module 31. When the steel pipe is moved by the rotating transverse trolley, the steel pipe is placed on the lifting module 31. The hydraulic drive mechanism 32 can drive the lifting module 31 to rise and fall, thereby driving the steel pipe to rise and fall. The lifting guide mechanism 33 provides guidance for the lifting module 31 to rise and fall, which is conducive to smooth and stable lifting.

[0034] Furthermore, two steel pipe lifting devices 3 are spaced apart on the rotating support 2 along its length. A steel pipe rotating roller 21 is provided between the two steel pipe lifting devices 3, and the axis of rotation of the steel pipe rotating roller 21 is perpendicular to the length of the rotating support 2. The steel pipe rotating roller 21 can drive the steel pipe to move between the two steel pipe lifting devices 3 to adjust the relative position of the steel pipe on the two steel pipe lifting devices 3 to a predetermined position, so that the steel pipe is kept balanced on the two steel pipe lifting devices 3 and uneven force is avoided in the steel pipe rotating and traversing vehicle.

[0035] Furthermore, the rotating device 4 includes a large gear 41 mounted on the transverse support 1, a small gear 42 meshing with the large gear 41, and a rotary drive motor 43 mounted on the rotating support 2. The output end of the rotary drive motor 43 is connected to the small gear 42 to drive the small gear 42 to rotate. The rotating device 4 also includes casters 44 mounted on the rotating support 2 and an annular slide rail 45 mounted on the transverse support 1. When the rotating support 2 rotates relative to the transverse support 1, the casters 44 move along the annular slide rail 45. When it is necessary to rotate the steel pipe, the rotary drive motor 43 drives the small gear 42 to rotate, thereby causing the small gear 42 to move circumferentially along the large gear 41, which in turn drives the rotating support 2 to rotate relative to the transverse support 1. At the same time, the casters 44 on the rotating support 44 move along the annular slide rail 45. On the one hand, the casters 44 can provide stable support for the rotating support 2; on the other hand, the rolling friction between the casters 44 and the annular slide rail 45 makes the rotation of the rotating support 2 smoother.

[0036] Furthermore, a shock-absorbing device 9 is provided between the transverse support 1 and the rotating support 2. The shock-absorbing device 9 includes a first shock-absorbing block 91 disposed on the transverse support 1 and a first shock-absorbing module 92 disposed on the rotating support 2. The first shock-absorbing block 91 is provided with a first shock-absorbing baffle 911 coplanar with the rotation axis of the rotating support 2, and the first shock-absorbing module 92 is provided with a first shock-absorbing inclined surface 921 coplanar with the rotation axis of the rotating support 2. When the rotating support 2 rotates 180 degrees relative to the transverse support 1 in the forward direction, the first shock-absorbing baffle 911... The damping device 9 further includes a second damping block 93 disposed on the transverse support 1 and a second damping module 94 disposed on the rotating support 2. The second damping block 93 is provided with a second damping baffle 931 coplanar with the rotation axis of the rotating support 2, and the second damping module 94 is provided with a second damping inclined surface 941 coplanar with the rotation axis of the rotating support 2. When the rotating support 2 rotates 180 degrees in the opposite direction to the transverse support 1, the second damping baffle 931 is in contact with the second damping inclined surface 941. The first damping block 91, the first damping module 92, the second damping block 93, and the second damping module 94 are made of damping and cushioning materials such as rubber, polyurethane, and plastic. On the one hand, when the rotating bracket 2 stops rotating in the forward direction relative to the transverse bracket 1, the first damping block 91 and the first damping module 92 can cooperate to achieve buffering and damping. On the other hand, when the rotating bracket 2 stops rotating in the reverse direction relative to the transverse bracket 1, the second damping block 93 and the second damping module 94 can cooperate to achieve buffering and damping, which helps to reduce the degree of vibration and ensure the stability of the connection structure.

[0037] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information. In addition, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A steel pipe rotating and traversing vehicle with anti-rollover function, characterized in that, The device includes a transverse support (1), a rotating support (2) located above the transverse support (1), a steel pipe lifting device (3) located on the rotating support (2), a rotating device (4) located between the transverse support (1) and the rotating support (2) for driving the rotating support (2) to rotate relative to the transverse support (1), and a walking device (5) and an anti-tipping device (6) located below the transverse support (1). The walking device (5) includes two parallel guide rails (51), a walking wheel set (52) movably located on the guide rails (51), and a walking drive mechanism (53) for driving the walking wheel set (52) to move. The anti-tipping device (6) is located between the transverse support (1) and the guide rails (51). One end of the anti-tipping device (6) is connected to the transverse support (1), and the other end is provided with a clamping cooperation with the guide rails (51).

2. The anti-rollover steel pipe rotating and traversing vehicle according to claim 1, characterized in that, The guide rail (51) includes a guide portion (511), a mounting portion (512) located below the guide portion (511), and a connecting portion (513) connecting the guide portion (511) and the mounting portion (512). The width of the guide portion (511) is greater than the width of the connecting portion (513). The anti-tipping device (6) is provided with a connecting groove (63) that mates with the guide portion (511).

3. The anti-rollover steel pipe rotating and traversing vehicle according to claim 2, characterized in that, The anti-tipping device (6) includes a connecting module (61) connected to the transverse support (1) and two opposing clamping arms (62) located at the lower end of the connecting module (61). The connecting groove (63) is formed between the two clamping arms (62). The clamping arm (62) includes a first clamping plate (621) located beside the guide portion (511) and a second clamping plate (622) located below the guide portion (511).

4. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 3, characterized in that, The anti-rollover device (6) includes a scraper (64) connected to the connecting module (61).

5. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, Four anti-tipping devices (6) are provided below the transverse support (1). Two anti-tipping devices (6) are spaced apart below the transverse support (1) along the extension direction of any one of the guide rails (51), and two anti-tipping devices (6) are spaced apart below the transverse support (1) along the extension direction of the other guide rail (51).

6. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, The walking wheel set (52) includes a driving wheel (521) and a driven wheel (522) spaced apart along the extension direction of the guide rail (51), and the driving wheel (521) is connected to the walking drive mechanism (53).

7. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, The rotating support (2) is provided with a tie beam device (7), which includes a first outer support (71), a first inner support (72), a second inner support (73), and a second outer support (74) arranged sequentially at intervals along the length of the rotating support (2). A main beam (75) is provided between the first inner support (72) and the second inner support (73). Tie beams (76) are hinged between the first outer support (71) and the first inner support (72) and between the second outer support (74) and the second inner support (73).

8. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, The steel pipe lifting device (3) includes a lifting module (31), a hydraulic drive mechanism (32) for driving the lifting module (31) to lift and lower, and a lifting guide mechanism (33) on both sides of the hydraulic drive mechanism (32). Two steel pipe lifting devices (3) are spaced apart on the rotating support (2) along the length direction of the rotating support (2). A steel pipe rotating roller (21) is provided between the two steel pipe lifting devices (3). The rotation axis of the steel pipe rotating roller (21) is perpendicular to the length direction of the rotating support (2).

9. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, The rotating device (4) includes a large gear (41) on the transverse support (1), a small gear (42) meshing with the large gear (41), and a rotary drive motor (43) on the rotating support (2). The output end of the rotary drive motor (43) is connected to the small gear (42) to drive the small gear (42) to rotate. The rotating device (4) also includes a caster (44) on the rotating support (2) and an annular slide rail (45) on the transverse support (1). When the rotating support (2) rotates relative to the transverse support (1), the caster (44) moves along the annular slide rail (45).

10. A steel pipe rotating and traversing vehicle with anti-rollover function according to claim 1, characterized in that, A shock-absorbing device (9) is provided between the transverse support (1) and the rotating support (2). The shock-absorbing device (9) includes a first shock-absorbing block (91) on the transverse support (1) and a first shock-absorbing module (92) on the rotating support (2). The first shock-absorbing block (91) is provided with a first shock-absorbing baffle (911) coplanar with the rotation axis of the rotating support (2). The first shock-absorbing module (92) is provided with a first shock-absorbing inclined surface (921) coplanar with the rotation axis of the rotating support (2). When the rotating support (2) rotates 180 degrees relative to the transverse support (1), the first shock-absorbing baffle (911) and the first shock-absorbing module (92) are connected. The first damping inclined surface (921) is in contact with the damping device (9); the damping device (9) also includes a second damping block (93) provided on the transverse support (1) and a second damping module (94) provided on the rotating support (2). The second damping block (93) is provided with a second damping baffle (931) coplanar with the rotation axis of the rotating support (2), and the second damping module (94) is provided with a second damping inclined surface (941) coplanar with the rotation axis of the rotating support (2). When the rotating support (2) rotates 180 degrees in the opposite direction to the transverse support (1), the second damping baffle (931) is in contact with the second damping inclined surface (941).

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