Adjustable gradienter support

Abstract

The utility model provides an adjustable gradienter support which comprises a placing frame, an adjusting assembly capable of adjusting a placing plate is arranged on the placing frame, and a gradienter is placed on the placing plate. The adjusting assembly comprises an adjusting part and a balance weight part, the balance weight part is connected with the adjusting part, the balance weight part is located at the vertical position and drives the adjusting part to rotate so that the containing plate can be horizontally placed, and the adjusting assembly is connected with the containing plate. The angle of the gradienter can be adjusted at all angles through the adjusting assembly, meanwhile, the balance weight part in the adjusting assembly is always located at the vertical position without interference of human factors, so that the placing plate is located at the horizontal position, leveling is facilitated, operation is simple, and measurement and calibration work of the gradienter is facilitated.

Description

Technical Field

[0001] The utility model relates to an adjustable level support. Background Art

[0002] The laser level in the level is a commonly used measuring instrument, often used in the fields of construction, engineering and interior decoration to ensure the accuracy of the horizontal line. The laser level can emit a laser beam of a horizontal line or horizontal plane, allowing the user to accurately determine the horizontal direction, and is also often used in the field of quality and technical supervision.

[0003] Generally, the position where the level is placed needs to be in a horizontal state before leveling measurement is performed. Sometimes, the level needs to be tilted at a certain angle for leveling or other operations. Some traditional brackets also have the ability to adjust the level to a horizontal position, but the adjustment process is relatively complicated. Therefore, an adjustable level bracket is provided to address the above problems. Utility Model Content

[0004] The utility model provides an adjustable level bracket to solve the problem that the adjustment method of the traditional level bracket is too complicated.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides an adjustable level support, comprising a placement rack, on which an adjustment component of an adjustable placement plate is arranged, and on which a level is placed;

[0007] The adjustment assembly includes an adjustment part and a counterweight part, the counterweight part and the adjustment part are connected to each other, the counterweight part is in a vertical position, and the counterweight part drives the adjustment part to rotate so that the placement plate is placed horizontally, and the adjustment assembly is connected to the placement plate;

[0008] Angle adjustment mechanisms are provided on both sides of the placement plate, and the angle adjustment mechanisms include a limiting portion and a protractor. The placement plate slides in a guide groove on the limiting portion, and the guide groove on the limiting portion limits the rotation direction of the placement plate, and the angle adjustment mechanism can move in a circular trajectory along the placement plate.

[0009] In the present technical solution, the adjusting part includes a rotatable adjusting ball, the middle surface of the adjusting ball is wrapped with a limiting shell, the surface of the limiting shell is a spherical structure, the overall structure is an annular structure, and the limiting shell is fixed to the placement frame through a fixing frame, the adjusting ball rotates in the limiting shell, a support rod is fixed to the top of the adjusting ball, and the support rod is fixed to the center of the bottom side wall of the placement plate, the counterweight part includes a connecting rod, the connecting rod is fixed to the bottom of the adjusting ball, and the counterweight is fixed to the bottom end of the connecting rod.

[0010] In the technical solution, the connecting rod and the supporting rod are located on the same straight line, and the straight line on which the connecting rod and the supporting rod are located passes through the center of the adjusting ball.

[0011] In the technical solution, the adjusting ball is provided with a pre-limiting piece capable of pre-fixing the adjusting ball, and the limiting shell is provided with two limiting structures capable of fixing the adjusting ball.

[0012] In the present technical solution, the pre-limiting member includes a fixed shell and a plurality of retractable limiting rods, the fixed shell is located above the adjusting ball, the inner surface of the fixed shell is a spherical structure, and the whole is an annular structure, the center of the inner surface of the fixed shell coincides with the center of the adjusting ball, the limiting rod is fixed in the area of ​​the adjusting ball not covered by the limiting shell, the end of the limiting member overlaps the inner wall of the fixed shell, and the extension line of the axis of the limiting rod passes through the center of the adjusting ball.

[0013] In the technical scheme, the limit rod includes an outer rod, the outer rod is fixed on the adjusting ball, the top inner cavity of the outer rod is slidably connected with an inner slide rod, the surface of the inner slide rod is sleeved with a spring, the two ends of the spring are respectively fixed on the inner slide rod and the inner wall of the outer rod, one end of the transmission rope is fixed on the end of the inner slide rod in the inner cavity of the outer rod, the end of the transmission rope passes through the side wall of the outer rod of the guide column and the guide theory in sequence, and then passes through the side wall of the support rod to extend to the inside of the placement hole, the placement hole is opened at the center of the placement plate, and the placement hole extends downward to the inside of the support rod, the transmission rope passes through the guide ring in the placement hole in the support rod and then vertically passes through the placement hole to be connected with the lifting plate, and the lifting plate covers the surface of the placement hole;

[0014] The guide wheel is fixed on the outer sleeve rod, and the guide ring is fixed on the side wall of the inner cavity of the placement hole in the support rod.

[0015] In the present technical solution, the two limiting structures are symmetrically arranged with each other. The limiting structure includes a threaded tube, which is fixed on the outer wall of the limiting shell and arranged in a horizontal direction. A threaded rod is arranged inside the threaded tube. The threaded rod and the threaded tube are connected by threads. The threaded rod passes through the limiting shell and overlaps the surface of the adjusting ball.

[0016] In this technical solution, the protractor is arranged on one side of the placement plate, two fixing rods are fixed to the bottom of the protractor, the bottom ends of the fixing rods are slidably connected to the annular guide rail on the placement plate, and the two limit parts are respectively fixed on the two fixing rods.

[0017] In the present technical solution, the limiting portion includes a guide plate, a guide groove with an arc-shaped structure is opened on the inner wall of the guide plate, the center of the guide groove coincides with the center of the adjusting ball, a retractable guide rod is slidably connected in the guide groove, the guide rod is fixed on the side wall of the placement plate, and the extension line of the central axis of the guide rod passes through the center of the adjusting ball.

[0018] In the present technical solution, the guide rod is composed of an outer rod and an inner rod, the outer rod is sleeved on the surface of the inner rod, and the outer rod is fixed on the side wall of the placement plate, the inner wall of the outer rod and the outer wall of the inner rod are connected by threaded engagement, and the end of the inner rod can extend into the guide groove.

[0019] The guide plate is fixed on the fixing rod through a synchronization rod.

[0020] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0021] The positive and progressive effects of the utility model are:

[0022] The angle of the level can be adjusted at various angles through the adjustment component. At the same time, the counterweight part in the adjustment component is always in a vertical position without being interfered by human factors, so that the placement plate is in a horizontal position, which is easy to level and simple to operate, and facilitates the measurement and calibration of the level. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model without an angle adjustment mechanism;

[0026] Figure 4 It is a structural schematic diagram of the pre-fixing member of the utility model;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the adjustment component of the utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the limit rod of the utility model;

[0029] Figure 7 For this utility model Figure 2 A local enlarged schematic diagram of point A.

[0030] Description of Reference Numerals

[0031] 1. Placement rack; 11. Circular guide rail;

[0032] 2. Adjustment assembly; 21. Adjustment ball; 22. Limiting shell; 221. Threaded pipe; 222. Threaded rod; 23. Connecting rod; 24. Counterweight;

[0033] 3. Fixed frame;

[0034] 4. Pre-limiting member; 41. Outer rod; 411. Inner slide rod; 412. Transmission rope; 413. Guide column; 414. Lifting plate; 42. Fixed shell; 43. Guide wheel;

[0035] 5. Support rod; 51. Guide ring;

[0036] 6. Placement plate; 61. Placement hole; 62. Identification plate; 63. External rod; 64. Internal rod;

[0037] 7. Protractor; 71. Fixed rod;

[0038] 8. Connecting frame;

[0039] 9. Guide plate; 91. Guide groove; 92. Synchronous rod. DETAILED DESCRIPTION

[0040] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0041] like Figure 1 and Figure 2 As shown, the adjustable level bracket includes a placement frame 1, on which an adjustment component 2 of an adjustable placement plate 6 is arranged, and on which a level is placed;

[0042] The adjusting assembly 2 includes an adjusting part and a counterweight part, the counterweight part and the adjusting part are connected to each other, the counterweight part is in a vertical position, and the counterweight part drives the adjusting part to rotate so that the placement plate 6 is placed horizontally, and the adjusting assembly 2 is connected to the placement plate 6;

[0043] An angle adjustment mechanism is provided on both sides of the placement plate 6, and the angle adjustment mechanism includes a limit portion and a protractor 7. The placement plate 6 slides in the guide groove 91 on the limit portion, and the guide groove 91 on the limit portion limits the rotation direction of the placement plate 6, and the angle adjustment mechanism can move in a circular trajectory along the placement plate 6.

[0044] The angle of the level can be adjusted at various angles by adjusting component 2. At the same time, the counterweight in the adjusting component 2 is always in a vertical position without being interfered by human factors, so that the placement plate 6 is in a horizontal position, which is easy to level and facilitates the measurement and calibration of the level.

[0045] Embodiment 1

[0046] As one of the embodiments of this technical solution, Figure 3 , Figure 4 as well as Figure 5 As shown, the adjusting part includes a rotatable adjusting ball 21, the middle surface of the adjusting ball 21 is wrapped with a limiting shell 22, the surface of the limiting shell 22 is a spherical structure, and the overall structure is an annular structure, and the limiting shell 22 is fixed to the placement frame 1 through a fixing frame 3, the adjusting ball 21 rotates in the limiting shell 22, and a support rod 5 is fixed to the top of the adjusting ball 21, and the support rod 5 is fixed to the center of the bottom side wall of the placement plate 6, and the counterweight part includes a connecting rod 23, and the connecting rod 23 is fixed to the bottom of the adjusting ball 21, and the counterweight 24 is fixed to the bottom end of the connecting rod 23.

[0047] In this embodiment, the rotation of the adjusting ball 21 in the inner cavity of the limiting shell 22 is used as the structural basis for the adjustment of the adjusting component 2. The rotating structure formed between the adjusting ball 21 and the limiting shell 22 can enable the support rod 5 connected to the adjusting ball 21 to rotate in any direction, thereby improving the flexibility of the angle adjustment of the placement plate 6, thereby facilitating the adjustment of the angle and the placement of the level.

[0048] The counterweight 24 is preferably a spherical structure. The counterweight 24 has a tendency to fall under the action of gravity. The counterweight 24 is linked to the adjusting ball 21 through the connecting rod 23. When the counterweight 24 no longer moves under the action of gravity, the connecting rod 23 connected to the counterweight 24 is in a vertical position. At this time, the supporting rod 5 connected to the adjusting ball 21 is also in a vertical position. At this time, the placing plate 6 is in a horizontal position, so that the placing plate 6 is in a horizontal position without being disturbed by human factors, which is convenient for leveling and placing the spirit level.

[0049] Furthermore, the connecting rod 23 and the supporting rod 5 are located on the same straight line, and the straight line on which the connecting rod 23 and the supporting rod 5 are located passes through the center of the adjusting ball 21, providing a structural basis for the supporting rod 5 to be in a vertical position when the connecting rod 23 is in a vertical position.

[0050] The connecting rod 23 passes through the through hole on the placement rack 1 , and the accessory part is connected to the bottom of the placement rack 1 .

[0051] Embodiment 2

[0052] This embodiment is derived on the basis of the first embodiment. Figure 3 As shown in Figure 5, the adjusting ball 21 is provided with a pre-limiting part 4 that can pre-fix the adjusting ball 21. The adjusting ball 21 is first pre-fixed by the pre-limiting part 4 to provide damping for the rotation of the adjusting ball 21. The limiting shell 22 is provided with two limiting structures that can fix the adjusting ball 21, and then further fixed by the limiting structure.

[0053] Furthermore, the pre-limiting member 4 includes a fixed shell 42 and a plurality of retractable limiting rods, the fixed shell 42 is located above the adjusting ball 21, the inner surface of the fixed shell 42 is a spherical structure, and the whole is an annular structure, the center of the inner surface of the fixed shell 42 coincides with the center of the adjusting ball 21, the limiting rod is fixed in the area of ​​the adjusting ball 21 not covered by the limiting shell 22, the end of the limiting member overlaps the inner wall of the fixed shell 42, and the extension line of the axis of the limiting rod passes through the center of the adjusting ball 21.

[0054] The adjusting ball 21 is pre-fixed by a telescopic limiting rod.

[0055] Preferably, Figure 6 and Figure 7 As shown, the limit rod includes an outer rod 41, and the outer rod 41 is fixed on the adjusting ball 21. The top inner cavity of the outer rod 41 is slidably connected with an inner slide rod 411, and the surface of the inner slide rod 411 is sleeved with a spring, and the two ends of the spring are respectively fixed on the inner slide rod 411 and the inner wall of the outer rod 41, and one end of the transmission rope 412 is fixed on the end of the inner slide rod 411 located in the inner cavity of the outer rod 41, and the end of the transmission rope 412 passes through the side wall of the outer rod 41 and the guide column 413 in sequence, and then passes through the side wall of the support rod 5 to extend to the inside of the placement hole 61, and the placement hole 61 is opened at the center of the placement plate 6, and the placement hole 61 extends downward to the inside of the support rod 5, and the transmission rope 412 passes through the guide ring 51 in the placement hole 61 in the support rod 5 and then vertically passes through the placement hole 61 to be connected with the lifting plate 414, and the lifting plate 414 covers the surface of the placement hole 61;

[0056] The guide wheel 43 is fixed on the outer sleeve rod 41 , and the guide ring 51 is fixed on the inner cavity side wall of the placement hole 61 in the support rod 5 .

[0057] The lifting plate 414 is then released, and the spring drives the inner sliding rod 411 to move toward one side of the fixed shell 42 during the process of restoring the length, until it reaches the inner wall of the fixed shell 42 again, thereby pre-fixing the adjusting ball 21 and the placing plate 6, and then further fixing the adjusting ball 21 through the limiting structure.

[0058] When the level needs to be adjusted to a specified angle, the pre-fixed member is also placed in a loose state, and then the adjusting ball 21 is rotated.

[0059] A ring-shaped groove is formed at the top of the placement hole 61 to facilitate lifting the lifting plate 414 .

[0060] Furthermore, the two limiting structures are symmetrically arranged with each other, and the limiting structure includes a threaded tube 221, which is fixed on the outer wall of the limiting shell 22, and the threaded tube 221 is arranged in the horizontal direction. A threaded rod 222 is arranged inside the threaded tube 221, and the threaded rod 222 is connected to the threaded tube 221 by threads. The threaded rod 222 passes through the limiting shell 22 and overlaps the surface of the adjusting ball 21.

[0061] In this embodiment, during the pre-fixing of the adjusting ball 21, the end of the threaded rod 222 does not overlap with the adjusting ball 21. After the pre-fixing is completed, the threaded rod 222 is rotated, and the threaded rod 222 rotates in the inner cavity of the threaded tube 221. Under the push of the threaded engagement, the threaded rod 222 moves toward one side of the adjusting ball 21 until the threaded rod 222 is tightly against the surface of the adjusting ball 21, thereby further fixing the adjusting ball 21.

[0062] Embodiment 3

[0063] This embodiment is derived on the basis of the first embodiment. Figure 1 and Figure 2 As shown, the protractor 7 is arranged on one side of the placement plate 6, and two fixing rods 71 ​​are fixed to the bottom of the protractor 7. The bottom ends of the fixing rods 71 ​​are slidably connected to the annular guide rail 11 on the placement plate 6, and the two limiting parts are respectively fixed on the two fixing rods 71.

[0064] The central axis of the annular guide rail 11 passes through the center of the adjusting ball 21 .

[0065] The protractor 7 slides on the annular guide rail 11 through the fixing rod 71, thereby rotating around the placement plate 6, so as to facilitate adjustment of the angle of the placement plate 6 in various directions to better suit the use environment.

[0066] A horizontal plate is fixed on the fixing rod 71, and a screw rod arranged vertically is inserted on the horizontal plate. The screw rod and the horizontal plate are threadedly connected, and the screw rod can contact the placement frame 1. When the position of the protractor 7 needs to be fixed, the screw rod is rotated so that the screw rod is tightly pressed against the placement frame 1.

[0067] An identification plate 62 is connected to the side wall of the placement plate 6 , and the identification plate 62 points to the protractor 7 , and the identification plate 62 assists in reading the reading of the protractor 7 .

[0068] The limiting portion includes a guide plate 9, and a guide groove 91 with an arc-shaped structure is opened on the inner wall of the guide plate 9. The center of the guide groove 91 coincides with the center of the adjusting ball 21. A retractable guide rod is slidably connected in the guide groove 91. The guide rod is fixed on the side wall of the placement plate 6, and the extension line of the central axis of the guide rod passes through the center of the adjusting ball 21.

[0069] When the level needs to be tilted at a certain angle in a certain direction, the placement plate 6 used to place the level can be adjusted to the angle first, and then the level is placed on the placement plate 6.

[0070] The angle adjustment mechanism is moved to the specified direction by sliding the fixing rod 71 on the annular guide rail 11, and then the two guide rods on the placement plate 6 are aligned with the guide grooves 91 on the two guide plates 9 respectively, and the guide rods are extended until the ends of the guide rods extend into the guide grooves 91, and then the guide plate 9 is rotated. Due to the limitation of the guide grooves 91, the guide plate 9 can only rotate in this direction, and the inclination angle of the placement plate 6 is measured by the protractor 7 until the angle reaches the specified value, and then the adjusting ball 21 is fixed by the pre-fixed part and the limiting structure, thereby fixing the placement plate 6, and then the level is placed on the placement plate 6.

[0071] Furthermore, the guide rod is composed of an outer rod 63 and an inner rod 64, the outer rod 63 is sleeved on the surface of the inner rod 64, and the outer rod 63 is fixed on the side wall of the placement plate 6, the inner wall of the outer rod 63 and the outer wall of the inner rod 64 are connected by threaded engagement, and the end of the inner rod 64 can extend into the guide groove 91.

[0072] When the guide rod needs to be extended or shortened, the inner rod 64 is rotated, and the inner rod 64 rotates in the inner cavity of the outer rod 63. Under the push of the thread, the inner rod 64 moves in the inner cavity of the outer rod 63 to extend or shorten the guide rod.

[0073] The guide plate 9 is fixed on the fixing rod 71 via a synchronization rod 92 .

[0074] Make the guide plate 9 move synchronously with the protractor 7.

[0075] The utility model is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the utility model, but these changes and modifications are within the protection scope of the utility model.

Claims

1. An adjustable level support, comprising a placement frame (1), characterized in that: The placement rack (1) is provided with an adjustment component (2) capable of adjusting a placement plate (6), and a level is placed on the placement plate (6); The adjustment component (2) comprises an adjustment part and a counterweight part, the counterweight part and the adjustment part are connected to each other, the counterweight part is in a vertical position, and the counterweight part drives the adjustment part to rotate so that the placement plate (6) is placed horizontally, and the adjustment component (2) is connected to the placement plate (6); An angle adjustment mechanism is provided on both sides of the placement plate (6), and the angle adjustment mechanism comprises a limiting portion and a protractor (7). The placement plate (6) slides in a guide groove (91) on the limiting portion, and the guide groove (91) on the limiting portion limits the rotation direction of the placement plate (6), and the angle adjustment mechanism can move in a circular trajectory along the placement plate (6).

2. The adjustable level support according to claim 1, characterized in that: The adjusting part comprises a rotatable adjusting ball (21), the middle surface of the adjusting ball (21) is wrapped with a limiting shell (22), the surface of the limiting shell (22) is a spherical structure, and the whole is an annular structure, and the limiting shell (22) is fixed on the placement frame (1) through a fixing frame (3), and the adjusting ball (21) rotates in the limiting shell (22), and a support rod (5) is fixed on the top of the adjusting ball (21), and the support rod (5) is fixed to the center of the bottom side wall of the placement plate (6), and the counterweight part comprises a connecting rod (23), and the connecting rod (23) is fixed to the bottom of the adjusting ball (21), and the bottom end of the connecting rod (23) is fixed to a counterweight piece (24).

3. The adjustable level support according to claim 2, characterized in that: The connecting rod (23) and the supporting rod (5) are located on the same straight line, and the straight line on which the connecting rod (23) and the supporting rod (5) are located passes through the center of the adjusting ball (21).

4. The adjustable level support according to claim 2, characterized in that: The adjusting ball (21) is provided with a pre-limiting member (4) capable of pre-fixing the adjusting ball (21), and the limiting shell (22) is provided with two limiting structures capable of fixing the adjusting ball (21).

5. The adjustable level support according to claim 4, characterized in that: The pre-limiting member (4) comprises a fixed shell (42) and a plurality of retractable limiting rods, the fixed shell (42) being located above the adjusting ball (21), the inner surface of the fixed shell (42) being a spherical structure, and the whole being an annular structure, the center of the inner surface of the fixed shell (42) coincides with the center of the adjusting ball (21), the limiting rods being fixed to an area of ​​the adjusting ball (21) not covered by the limiting shell (22), the end of the limiting member being overlapped with the inner wall of the fixed shell (42), and the extension line of the axis of the limiting rod passing through the center of the adjusting ball (21).

6. The adjustable level support according to claim 5, characterized in that: The limit rod comprises an outer rod (41), the outer rod (41) is fixed on the adjusting ball (21), the inner cavity of the top of the outer rod (41) is slidably connected with an inner slide rod (411), the surface of the inner slide rod (411) is sleeved with a spring, the two ends of the spring are respectively fixed on the inner slide rod (411) and the inner wall of the outer rod (41), one end of a transmission rope (412) is fixed on the end of the inner slide rod (411) in the inner cavity of the outer rod (41), and the end of the transmission rope (412) passes through the guide rod (411) in sequence. The column (413) is passed through the side wall of the outer rod (41) and the guide rod, and then passes through the side wall of the support rod (5) and extends to the inside of the placement hole (61). The placement hole (61) is opened at the center of the placement plate (6), and the placement hole (61) extends downward to the inside of the support rod (5). The transmission rope (412) passes through the guide ring (51) in the placement hole (61) in the support rod (5) and then vertically passes through the placement hole (61) to connect with the lifting plate (414). The lifting plate (414) covers the surface of the placement hole (61). The guide wheel (43) is fixed on the outer sleeve rod (41), and the guide ring (51) is fixed on the inner cavity side wall of the placement hole (61) in the support rod (5).

7. The adjustable level support according to claim 4, characterized in that: The two limiting structures are arranged symmetrically with each other, and the limiting structures include a threaded tube (221), the threaded tube (221) is fixed on the outer wall of the limiting shell (22), and the threaded tube (221) is arranged in the horizontal direction, a threaded rod (222) is arranged inside the threaded tube (221), the threaded rod (222) and the threaded tube (221) are connected by threads, and the threaded rod (222) passes through the limiting shell (22) and overlaps the surface of the adjusting ball (21); The protractor (7) is arranged on one side of the placement plate (6), and two fixing rods (71) are fixed to the bottom of the protractor (7), the bottom ends of the fixing rods (71) are slidably connected to the annular guide rail (11) on the placement plate (6), and the two limiting parts are respectively fixed to the two fixing rods (71).

8. The adjustable level support according to claim 7, characterized in that: The limiting portion comprises a guide plate (9), an inner wall of which is provided with a guide groove (91) of an arc-shaped structure, the center of the guide groove (91) coincides with the center of the adjusting ball (21), a retractable guide rod is slidably connected in the guide groove (91), the guide rod is fixed on the side wall of the placement plate (6), and an extension line of the central axis of the guide rod passes through the center of the adjusting ball (21).

9. The adjustable level support according to claim 8, characterized in that: The guide rod is composed of an outer rod (63) and an inner rod (64); the outer rod (63) is sleeved on the surface of the inner rod (64), and the outer rod (63) is fixed on the side wall of the placement plate (6); the inner wall of the outer rod (63) and the outer wall of the inner rod (64) are connected by threaded engagement, and the end of the inner rod (64) can extend into the guide groove (91).

10. The adjustable level support according to claim 9, characterized in that: The guide plate (9) is fixed on the fixed rod (71) via a synchronous rod (92).

Images