Industrial control instrument bottom plate device and installation method

Abstract

The invention discloses an industrial control instrument bottom plate device and an installation method, and belongs to the technical field of industrial control instrument bottom plates, the industrial control instrument bottom plate device comprises a fixing plate, a supporting table is fixedly connected to the center of the top surface of the fixing plate, a supporting plate is arranged over the supporting table, and instrument equipment is arranged in the center of the top surface of the supporting plate; a rotating mechanism is arranged in the supporting table, the rotating mechanism comprises a rotating block, and a fluted disc is fixedly connected to the middle of the rotating block. Two sets of clamping assemblies capable of being synchronously adjusted are arranged, instrument equipment is stably clamped in the horizontal direction and the front-back direction, the installation efficiency and the installation stability of the instrument equipment are improved, and the instrument equipment is convenient to use. And the rotating assembly is arranged, so that the instrument equipment can be rotationally adjusted, the angle of the instrument equipment can be adjusted according to the installation environment, and the installation difficulty of the instrument equipment is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial control instrument base plates, and in particular relates to an industrial control instrument base plate device and an installation method. Background Art

[0002] The industrial control instrument base plate is used for power supply, field signal input, instrument control output and instrument internal transfer. Whether the base plate and terminal arrangement are reasonable is directly related to whether the user is convenient to use. In particular, some instruments also require external compensators. The placement and wiring method of the compensator also directly affect the accuracy of the instrument measurement. For example, a Chinese invention patent with announcement number CN213818477U discloses an industrial control instrument base plate device, including a base plate, wherein No. 1 bolts are inserted into the four corners of the base plate, and support mechanisms are provided at both upper and lower ends of the base plate before the four No. 1 bolts, and an instrument device is provided between two of the support mechanisms, and the bottom of the instrument device is connected to a wire signal, and a wire binding mechanism is provided below the support mechanism at the bottom end of the base plate.

[0003] Based on the above, it is found that: the comparative document with announcement number CN213818477U clamps and fixes the instrument equipment through a pair of symmetrically arranged clamping components to complete the installation of the instrument equipment, but the two groups of clamping components are independently arranged. Therefore, when installing or removing the instrument equipment, it is necessary to adjust the two groups of clamping components separately, which affects the installation efficiency of the instrument equipment. Therefore, in view of this, the existing structure is studied and improved in order to achieve a more practical purpose. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an industrial control instrument base plate device and an installation method. The present invention provides two sets of clamping components that can be adjusted synchronously to stably clamp the instrument equipment horizontally and front and back, thereby improving the installation efficiency and stability of the instrument equipment. A rotating component is provided to rotate and adjust the instrument equipment, so that the instrument equipment can be adjusted at an angle according to the installation environment, thereby reducing the difficulty of installing the instrument equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides an industrial control instrument base plate device, comprising a fixed plate, a support platform is fixedly connected to the top surface of the fixed plate in the middle, a support plate is arranged directly above the support platform, an instrument device is arranged in the middle of the top surface of the support plate, and a rotating mechanism is arranged inside the support platform; The rotating mechanism comprises a rotating block, a toothed disc is fixedly connected to the middle of the rotating block, a toothed ring is meshedly connected to one side of the toothed disc, and a first threaded sleeve is sleeved on the outer side of the toothed ring.

[0006] A further improvement of the present invention is that the lower end of the rotating block is located inside the support platform, and the rotating block is movably connected to the support platform, and the top end of the support platform passes through the support platform and is fixedly connected to the bottom surface of the support plate.

[0007] A further improvement of the present invention is that a plurality of movable balls are movably connected to the upper and lower sides of the toothed disc, and the movable balls are in contact with the inner surface of the support platform.

[0008] A further improvement of the present invention is that the gear ring is located outside the support platform on one side, and the gear ring is movably connected to the fixed plate, and the connection between the toothed disc and the gear ring passes through the support platform.

[0009] A further improvement of the present invention is that it also includes a screw rod, the outer surface of which is provided with two rotating threads of the same length and opposite directions, the outer side of the rotating threads is sleeved with a ball slider, the top surface of the ball slider is fixedly connected to a first clamping plate, both ends of the first clamping plate are provided with a second clamping plate, the inner side of the second clamping plate is fixedly connected to a group of guide rods, and the outer side of the guide rods is sleeved with a clamping spring.

[0010] A further improvement of the present invention is that the screw rod is located in the center of the support plate, and the screw rod is movably connected to the support plate, and the connection between the ball slider and the first clamping plate is slidably connected to the support plate.

[0011] A further improvement of the present invention is that the guide rod is slidably connected to the first clamping plate, and two ends of the clamping spring are fixedly connected to the guide rod and the inner surface of the first clamping plate respectively.

[0012] A further improvement of the present invention is that the two ends of the screw rod are respectively fixedly connected with a threaded ring and a turning handle, the threaded ring and the turning handle are both located outside the support plate, and the outer side of the threaded ring is threadedly connected with a second threaded sleeve.

[0013] The present invention also provides a method for installing an industrial control instrument base plate device, comprising: First, fix the fixed plate in the installation position, then place the instrument equipment in the center of the top surface of the support plate, clamp and fix the horizontal position of the instrument equipment, and complete the installation of the instrument equipment. Finally, rotate the gear ring of the rotating mechanism to drive the gear disc to rotate synchronously. Under the action of the gear disc, the rotating block drives the support plate to rotate as a whole, and reduces the rotational friction of the gear disc through the movable ball bearing, so as to adjust the angle of the instrument. When the adjustment work is completed, rotate the first threaded sleeve to make its bottom surface fit with the fixed plate, which plays a role of limiting and fixing the gear ring to avoid angle shaking of the instrument equipment.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects: The present invention provides an industrial control instrument base plate device and installation method, which drives the lead screw to rotate by turning the handle, cooperates with the two sections of rotating threads, and makes the two ball sliders move synchronously in opposite directions. The ball slider drives the first clamping plate to clamp and fix the horizontal position of the instrument equipment. Then, under the action of the clamping spring, the second clamping plate clamps and fixes the front and rear positions of the instrument equipment to complete the installation of the instrument equipment. Compared with the prior art, two groups of clamping components that can be adjusted synchronously are provided to stably clamp the instrument equipment from the horizontal direction and the front and rear directions, thereby improving the installation efficiency and stability of the instrument equipment.

[0015] The present invention provides an industrial control instrument base plate device and installation method. A rotating mechanism is set to rotate the gear ring to drive the gear disc to rotate synchronously. Under the action of the gear disc, the rotating block drives the support plate to rotate as a whole. The rotational friction of the gear disc is reduced by a movable ball, so that the angle of the instrument is adjusted. After the adjustment work is completed, the first threaded sleeve is rotated to make its bottom surface fit with the fixed plate, which plays a role of limiting and fixing the gear ring. Compared with the prior art, the rotating component is set to adjust the rotation of the instrument equipment, so that the instrument equipment can be adjusted in angle according to the installation environment, reducing the difficulty of installing the instrument equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the support platform of the present invention; Figure 3 It is a structural schematic diagram of the rotating mechanism of the present invention; Figure 4 It is a structural schematic diagram of the screw rod of the present invention; Figure 5 It is a structural schematic diagram of the second clamping plate of the present invention; Figure 6 It is a structural disassembly diagram of the threaded ring and the second threaded sleeve of the present invention.

[0017] Description of the numbers in the figure: 1. Fixed plate; 2. Support table; 3. Support plate; 4. Instrument equipment; 5. Second threaded sleeve; 6. Rotating mechanism; 7. Rotating block; 8. Toothed disc; 9. Gear ring; 10. First threaded sleeve; 11. Screw rod; 12. Rotating thread; 13. Ball slider; 14. First clamping plate; 15. Second clamping plate; 16. Guide rod; 17. Clamping spring; 18. Threaded ring; 19. Turning handle. DETAILED DESCRIPTION

[0018] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0023] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0024] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0025] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1 See also Figure 1-6 The present embodiment provides an industrial control instrument base plate device, comprising a fixed plate 1, a support platform 2 is fixedly connected to the top surface of the fixed plate 1 in the center, a support plate 3 is arranged directly above the support platform 2, an instrument device 4 is arranged in the center of the top surface of the support plate 3, and a rotating mechanism 6 is arranged inside the support platform 2; the rotating mechanism 6 comprises a rotating block 7, a toothed disc 8 is fixedly connected to the middle of the rotating block 7, a toothed ring 9 is meshedly connected to one side of the toothed disc 8, and a first threaded sleeve 10 is sleeved on the outer side of the toothed ring 9, and a rotating mechanism 6 is arranged to enable the instrument device 4 to freely adjust the installation angle.

[0029] See also Figure 2In this embodiment, the lower end of the rotating block 7 is located inside the support platform 2, and the rotating block 7 is movably connected to the support platform 2. The top of the support platform 2 passes through the support platform 2 and is fixedly connected to the bottom surface of the support plate 3. Under the action of the toothed disc 8, the rotating block 7 drives the support plate 3 to rotate as a whole. When the toothed disc 8 is driven by external power to rotate, its teeth engage with the corresponding structure on the rotating block 7 to transmit the rotational motion to the rotating block 7. Since the rotating block 7 is movably connected to the support platform 2, it can rotate freely inside the support platform 2. At the same time, since there is a certain form of connection or transmission mechanism between the rotating block 7 and the support plate 3, the rotation of the rotating block 7 will drive the support plate 3 to rotate as a whole. The overall rotation of the support plate 3 is achieved by its fixed connection with the top of the support platform 2 and the driving action of the rotating block 7. In this process, the support platform 2 acts as a stable support platform to ensure the stability and reliability of the support plate 3 during the rotation process.

[0030] See also Figure 3 In this embodiment, a plurality of movable balls are movably connected to the upper and lower sides of the toothed disc 8, and the movable balls are in contact with the inner surface of the support platform 2, so that the rotational friction of the toothed disc 8 is reduced by the movable balls. Since the movable balls can roll freely on the inner surface of the support platform 2, they effectively convert the sliding friction between the toothed disc 8 and the support platform 2 into rolling friction. The resistance of rolling friction is much smaller than that of sliding friction, so the friction of the toothed disc 8 during rotation can be significantly reduced, making the rotation of the toothed disc 8 smoother and more stable.

[0031] See also Figure 3 In this embodiment, the gear ring 9 is located on the outside of the support platform 2 and on one side, and the gear ring 9 is movably connected to the fixed plate 1. The connection between the toothed disc 8 and the gear ring 9 passes through the support platform 2. The first threaded sleeve 10 is first rotated to separate from the fixed plate 1, and the gear ring 9 is in an active state. The gear ring 9 is rotated to drive the toothed disc 8 to rotate synchronously to adjust the angle of the instrument. Conversely, when the adjustment work is completed, the first threaded sleeve 10 is rotated to make its bottom surface fit with the fixed plate 1, which plays a role of limiting and fixing the gear ring 9, thereby avoiding the problem of angle shaking of the instrument equipment 4.

[0032] Example 2 See also Figure 1-6The present embodiment provides an industrial control instrument base plate device, comprising a fixed plate 1 and a screw 11, a support platform 2 is fixedly connected to the top surface of the fixed plate 1 in the center, a support plate 3 is arranged directly above the support platform 2, an instrument device 4 is arranged in the center of the top surface of the support plate 3, and a rotating mechanism 6 is arranged inside the support platform 2; the rotating mechanism 6 comprises a rotating block 7, a toothed disc 8 is fixedly connected to the middle of the rotating block 7, a toothed ring 9 is meshedly connected to one side of the toothed disc 8, and a first threaded sleeve 10 is sleeved on the outer side of the toothed ring 9, and a rotating mechanism 6 is arranged to enable the instrument device 4 to freely adjust the installation angle. The outer surface of the screw rod 11 is provided with two rotating threads 12 of the same length and opposite directions. The outer side of the rotating thread 12 is sleeved with a ball slider 13. The top surface of the ball slider 13 is fixedly connected with a first clamping plate 14. Both ends of the first clamping plate 14 are provided with a second clamping plate 15. The inner side of the second clamping plate 15 is fixedly connected with a group of guide rods 16. The outer side of the guide rods 16 is sleeved with a clamping spring 17. The rotation of the screw rod 11 cooperates with the two rotating threads 12 to make the two ball sliders 13 move synchronously in opposite directions.

[0033] See also Figure 4 In this embodiment, the screw rod 11 is located in the center of the support plate 3, and the screw rod 11 is movably connected to the support plate 3. The connection between the ball slider 13 and the first clamping plate 14 is slidably connected to the support plate 3. The ball slider 13 drives the first clamping plate 14 to move, and clamps and fixes the horizontal position of the instrument device 4. The screw rod 11 is rotated, and the screw rod drives the ball slider 13 to slide on the support plate 3 through its thread. The ball slider 13 drives the first clamping plate 14 connected to it to move together, and adjusts the distance between it and the instrument device 4. When the first clamping plate 14 moves to an appropriate position, it can tightly clamp the instrument device 4, thereby fixing its horizontal position.

[0034] See also Figure 5 In this embodiment, the guide rod 16 is slidably connected to the first clamping plate 14, and the two ends of the clamping spring 17 are fixedly connected to the guide rod 16 and the inner surface of the first clamping plate 14 respectively. The second clamping plate 15 is pulled sideways, and then under the action of the clamping spring 17, the second clamping plate 15 clamps and fixes the front and rear positions of the instrument device 4. The position of the first clamping plate 14 is adjusted to align with the horizontal position of the instrument device 4. Then, the second clamping plate 15 is pulled sideways to stretch the clamping spring 17 and store energy. When the second clamping plate 15 is pulled to the appropriate position, the operator releases the pulling force. Under the action of the clamping spring 17, the second clamping plate 15 will quickly move toward the first clamping plate 14, thereby clamping the front and rear positions of the instrument device 4.

[0035] See also Figure 6In this embodiment, the two ends of the screw rod 11 are respectively fixedly connected with a threaded ring 18 and a turning handle 19, which are both located on the outside of the support plate 3, and the outer side of the threaded ring 18 is threadedly connected with a second threaded sleeve 5. The second threaded sleeve 5 cooperates with the threaded ring 18 to fix the position of the screw rod 11 and maintain the stability of the clamping installation. Through the mutual cooperation of the threaded ring 18, the turning handle 19 and the second threaded sleeve 5, the operator can easily rotate the screw rod 11 to adjust the clamping position, and fix the position of the screw rod 11 by tightening the second threaded sleeve 5 when necessary, thereby ensuring that the instrument device 4 is stably and accurately clamped and installed.

[0036] Example 3 See also Figure 1-6 , this embodiment provides a method for installing an industrial control instrument base plate device, comprising: First, fix the fixed plate 1 at the installation position, then place the instrument equipment 4 in the center of the top surface of the support plate 3, clamp and fix the horizontal position of the instrument equipment 4, and complete the installation of the instrument equipment 4. Finally, rotate the toothed ring 9 of the rotating mechanism 6 to drive the toothed disc 8 to rotate synchronously. Under the action of the toothed disc 8, the rotating block 7 drives the support plate 3 to rotate as a whole, and reduces the rotational friction of the toothed disc 8 through the movable ball bearing, so as to adjust the angle of the instrument. When the adjustment work is completed, rotate the first threaded sleeve 10 to make its bottom surface fit with the fixed plate 1, so as to limit and fix the toothed ring 9 and prevent the instrument equipment 4 from shaking at an angle.

[0037] Example 4 See also Figure 1-6 , this embodiment provides a method for installing an industrial control instrument base plate device, comprising: The screw rod 11 is driven by the turning handle 19 to rotate, and the two-stage rotating thread 12 is used to make the two ball sliders 13 move in opposite directions synchronously. The ball slider 13 drives the first clamping plate 14 to move, and the horizontal position of the instrument device 4 is clamped and fixed. At the same time, the second clamping plate 15 is pulled sideways to drive the guide rod 16 to slide and compress the clamping spring 17. Then, under the action of the clamping spring 17, the second clamping plate 15 is clamped and fixed to the front and rear positions of the instrument device 4 to complete the installation of the instrument device 4. Finally, the gear ring 9 is rotated to drive the gear disc 8 to rotate synchronously. Under the action of the gear disc 8, the rotating block 7 drives the support plate 3 to rotate as a whole, and the rotation friction of the gear disc 8 is reduced by the movable ball, so as to adjust the angle of the instrument. When the adjustment work is completed, the first threaded sleeve 10 is rotated to make its bottom surface fit with the fixed plate 1, so as to limit and fix the gear ring 9, and avoid the problem of angle shaking of the instrument device 4.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An industrial control instrument base plate device, characterized in that: It comprises a fixed plate (1), a support platform (2) is fixedly connected to the center of the top surface of the fixed plate (1), a support plate (3) is arranged directly above the support platform (2), an instrument device (4) is arranged in the center of the top surface of the support plate (3), and a rotating mechanism (6) is arranged inside the support platform (2); The rotating mechanism (6) comprises a rotating block (7), a toothed disc (8) is fixedly connected to the middle of the rotating block (7), a toothed ring (9) is meshingly connected to one side of the toothed disc (8), and a first threaded sleeve (10) is sleeved on the outer side of the toothed ring (9).

2. The industrial control instrument base plate device according to claim 1, characterized in that: The lower end of the rotating block (7) is located inside the support platform (2), and the rotating block (7) is movably connected to the support platform (2). The top end of the support platform (2) passes through the support platform (2) and is fixedly connected to the bottom surface of the support plate (3).

3. The industrial control instrument base plate device according to claim 1, characterized in that: A plurality of movable balls are movably connected to the upper and lower sides of the toothed disc (8), and the movable balls are in contact with the inner surface of the support platform (2).

4. The industrial control instrument base plate device according to claim 1, characterized in that: The gear ring (9) is located outside the support platform (2) on one side, and the gear ring (9) is movably connected to the fixed plate (1), and the connection between the toothed disc (8) and the gear ring (9) passes through the support platform (2).

5. The industrial control instrument base plate device according to claim 1, characterized in that: The invention also comprises a screw rod (11), the outer surface of which is provided with two rotating threads (12) of the same length and opposite directions, the outer side of the rotating threads (12) is sleeved with a ball slider (13), the top surface of the ball slider (13) is fixedly connected to a first clamping plate (14), both ends of the first clamping plate (14) are provided with a second clamping plate (15), the inner side of the second clamping plate (15) is fixedly connected to a group of guide rods (16), and the outer side of the guide rods (16) is sleeved with a clamping spring (17).

6. The industrial control instrument base plate device according to claim 5, characterized in that: The screw rod (11) is located in the center of the support plate (3), and the screw rod (11) is movably connected to the support plate (3), and the connection between the ball slider (13) and the first clamping plate (14) is slidably connected to the support plate (3).

7. The industrial control instrument base plate device according to claim 5, characterized in that: The guide rod (16) is slidably connected to the first clamping plate (14), and two ends of the clamping spring (17) are respectively fixedly connected to the guide rod (16) and the inner surface of the first clamping plate (14).

8. The industrial control instrument base plate device according to claim 5, characterized in that: The two ends of the screw rod (11) are respectively fixedly connected with a threaded ring (18) and a turning handle (19), and the threaded ring (18) and the turning handle (19) are both located outside the support plate (3).

9. The industrial control instrument base plate device according to claim 8, characterized in that: The outer side of the threaded ring (18) is threadably connected to a second threaded sleeve (5).

10. A method for installing an industrial control instrument base plate device according to any one of claims 1 to 9, characterized in that: include: First, the fixing plate (1) is fixed at the installation position, and then the instrument device (4) is placed in the center of the top surface of the support plate (3), and the horizontal position of the instrument device (4) is clamped and fixed to complete the installation of the instrument device (4). Finally, the toothed ring (9) of the rotating mechanism (6) is rotated to drive the toothed disc (8) to rotate synchronously. Under the action of the toothed disc (8), the rotating block (7) drives the supporting plate (3) to rotate as a whole, and the rotational friction of the toothed disc (8) is reduced by the movable ball, so as to adjust the angle of the instrument. When the adjustment work is completed, the first threaded sleeve (10) is rotated so that its bottom surface is in contact with the fixing plate (1), so as to limit and fix the toothed ring (9) and prevent the instrument device (4) from shaking in angle.

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