Turnover mechanism for heavy cylindrical workpieces

Abstract

The turnover mechanism comprises a supporting seat, a first clamping assembly, a height adjusting assembly and a circumferential protection piece, and the supporting seat comprises two coaxial mounting holes; the first clamping assembly comprises a main clamping piece and a fixing base, the main clamping piece and the fixing base are connected through two sets of lateral connecting pieces, and the two sets of lateral connecting pieces are installed in the coaxial installation holes through shaft sleeves correspondingly. The height adjusting assembly comprises an auxiliary clamping piece arranged at one end of the fixing base, and the auxiliary clamping piece is movably connected with the side, close to the main clamping piece, of the fixing base through a telescopic piece. The circumferential protection piece is arranged between the main clamping piece and the auxiliary clamping piece and provided with an opening in the circumferential direction. According to the turnover mechanism, the workpiece is clamped in one direction through the main clamping piece of the first clamping assembly and the auxiliary clamping piece of the height adjusting assembly, lateral protection is achieved with the assistance of the circumferential protection piece, and then the workpiece is driven to turn over through rotation of the lateral connecting piece on the supporting base.

Description

Technical Field

[0001] The present application relates to the technical field of equipment manufacturing and processing, and in particular to a turning mechanism for heavy cylindrical workpieces. Background Art

[0002] In the field of equipment manufacturing, heavy cylindrical parts need to be flipped 180 degrees during the assembly, welding and testing processes in factories, such as welding the upper and lower surfaces of cylindrical parts, ultrasonic testing of the upper and lower surfaces of turbine disks, and disassembly and assembly of nuts on the upper and lower surfaces of cylindrical parts. The commonly used method is to use an overhead crane to lift the round object off the ground, then slowly lower it to contact the ground, and then use the contact point as a fulcrum to manually apply force to make the object tip over and flip under the action of gravity. This method is time-consuming and labor-intensive, and has high requirements for operators. In addition, due to the large weight of heavy cylindrical parts, the inertia during the flipping process generates a huge impact force, which can easily cause the object to be pressed or skidded, posing a major production safety hazard.

[0003] Chinese patent CN113618321A discloses a heavy-duty hydraulic turning machine mainly for turning non-circular parts 0-90°; Chinese patent CN206606721U discloses a 180° turning machine, which is composed of a frame, a transmission tray, and a motor. The workpiece needs to be placed on the transmission tray first, and then moved to the clamping claw on the roller assembly for turning. Overall, the equipment has a complex structure, low turning efficiency, and occupies a large space, and cannot turn heavy cylindrical parts.

[0004] Heavy-duty cylindrical parts turning machines need to meet the requirements of safe, stable and efficient 180-degree turning of objects of different diameters and heights. At present, industrial turning machines for heavy-duty cylindrical parts have complex structures and high costs. On the other hand, they cannot cooperate with cylindrical parts of different diameters and heights, and cannot achieve the purpose of turning 180 degrees. Utility Model Content

[0005] The main purpose of the present application is to provide a turning mechanism for heavy cylindrical workpieces, aiming to solve the technical problems of the existing heavy workpiece turning equipment, which is inconvenient to operate and has a complex structure, resulting in low efficiency.

[0006] To achieve the above purpose, the present application proposes a turning mechanism for a heavy cylindrical workpiece, the turning mechanism comprising:

[0007] A support base, the support base comprising two coaxial mounting holes;

[0008] A first clamping assembly, the first clamping assembly comprising a main clamping member and a fixing seat that are matched and clamped with an end surface of the heavy cylindrical workpiece, the main clamping member and the fixing seat are connected by two sets of lateral connecting members, and the two sets of lateral connecting members are respectively installed on a coaxial mounting hole through a shaft sleeve;

[0009] Height adjustment assembly; the height adjustment assembly comprises a secondary clamping member disposed at one end of the fixing seat, the secondary clamping member being movably connected to a side of the fixing seat close to the main clamping member through a telescopic member;

[0010] A circumferential protective member is arranged between the main clamping member and the auxiliary clamping member and has an opening in the circumferential direction, and is used to prevent the heavy cylindrical workpiece from escaping in the circumferential direction.

[0011] Optionally, the flipping mechanism also includes a second clamping assembly, which includes a clamping chain with one end fixed to one side of the opening of the circumferential protective member and the other end movably fixed to the other side of the opening of the circumferential protective member, and the clamping chain and the circumferential protective member form a complete encirclement of the heavy cylindrical workpiece to clamp the heavy cylindrical workpiece from the circumferential direction.

[0012] Optionally, the second clamping assembly also includes a fastening nut installed on one side of the circumferential guard opening to fix one end of the clamping chain, and a tightening nut and a base box installed on the other side of the circumferential guard opening, and the tightening nut passes through the base box and the other end of the clamping chain to fix different lengths of the clamping chain.

[0013] Optionally, the telescopic member comprises a telescopic rod connected to the adjusting driving member, and a movable end of the telescopic rod is movably connected to the auxiliary clamping member and / or the fixed seat via a fixed hinge seat.

[0014] Optionally, the adjusting driving member is a cylinder, and a plurality of the telescopic members are cross-arranged between the auxiliary clamping member and the fixing seat.

[0015] Optionally, each group of lateral connecting members includes two connecting rods with the same structure and hinged through an axial hole. The flipping mechanism also includes a locking assembly, and two locking assemblies are provided on each group of lateral connecting members and respectively pass through a connecting rod and the circumferential protective member to fix the relative angle of the two connecting rods.

[0016] Optionally, the locking assembly includes a hand pull ring, a cylindrical pin fixedly connected to the hand pull ring, a spring sleeve sleeved on the cylindrical pin, a spring embedded in the spring sleeve and fixed at one end, and a boss fixedly connected to the other end of the spring and arranged on the cylindrical pin; corresponding through holes are provided on the circumferential protective member and each connecting rod for the cylindrical pin to pass through.

[0017] Optionally, the flip mechanism further comprises a flip driving member, and the torque output end of the flip driving member is connected to one or two shaft sleeves.

[0018] Optionally, the flip driving member is a hand crank or a motor.

[0019] Optionally, the main clamping member and the auxiliary clamping member are disc structures.

[0020] Compared with the existing flipping equipment, the flipping mechanism of the present application has at least the following beneficial effects: the two end faces of the heavy cylindrical workpiece are clamped by the main clamping member of the first clamping assembly and the auxiliary clamping member of the height adjustment assembly, and the spacing between the main clamping member and the auxiliary clamping member is changed by the length change of the telescopic member to adapt to the fixation of workpieces of different sizes in one direction of the flipping mechanism, and lateral protection is achieved by arranging circumferential protective members on the circumference of the heavy cylindrical workpiece to prevent the workpiece from escaping from the flipping mechanism from the side, so that under stable and reliable fixing conditions, the two groups of lateral connecting members connected to the support seat through the bushing can rotate around the bushing as the center of the circle, thereby achieving the effect of driving the workpiece to flip. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a schematic structural diagram of an embodiment of the flipping mechanism of the present application;

[0023] Figure 2 A schematic structural diagram of an embodiment of a second clamping assembly of the flipping mechanism of the present application;

[0024] Figure 3 This is a schematic diagram of the partial structural disassembly of the flipping mechanism of this application;

[0025] Figure 4 This is a schematic diagram of the structure of the telescopic part of the flipping mechanism of this application;

[0026] Figure 5 for Figure 3 An enlarged schematic diagram of the structure at A (locking assembly);

[0027] Figure numerals: 1, support seat; 11, coaxial mounting hole; 2, first clamping assembly; 21, main clamping member; 22, fixed seat; 23, lateral connecting member; 231, connecting rod; 232, shaft hole; 24, shaft sleeve; 3, height adjustment assembly; 31, auxiliary clamping member; 32, telescopic member; 321, telescopic rod; 322, adjustment drive member; 323, fixed hinge seat; 4, circumferential protective member; 5, second clamping assembly; 51, clamping chain; 52, tightening nut; 53, bottom box; 54, tightening nut; 6, locking assembly; 61, hand pull ring; 62, cylindrical pin; 63, spring sleeve; 64, spring; 65, boss; 7, flip drive member;

[0028] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0033] like Figure 1 The figure shows an embodiment of the flipping mechanism of the heavy cylindrical workpiece of the present application, the flipping mechanism comprises: a support seat 1, the support seat 1 comprises two coaxial mounting holes 11; a first clamping assembly 2, the first clamping assembly 2 comprises a main clamping member 21 and a fixed seat 22 which are matched and clamped with an end face of the heavy cylindrical workpiece, the main clamping member 21 and the fixed seat 22 are connected by two groups of lateral connecting members 23, and the two groups of lateral connecting members 23 are respectively mounted on a coaxial mounting hole 11 through a sleeve 24; a height adjustment assembly 3, the height adjustment assembly 3 comprises a secondary clamping member 31 arranged at one end of the fixed seat 22, the secondary clamping member 31 is movably connected to a side of the fixed seat 22 close to the main clamping member 21 through a telescopic member 32; a circumferential protective member 4, the circumferential protective member 4 is arranged between the main clamping member 21 and the secondary clamping member 31 and has an opening in the circumferential direction, for preventing the heavy cylindrical workpiece from escaping from the circumferential direction.

[0034] Specifically, in this embodiment, the support seat 1 is a frame structure, and two coaxial mounting holes 11 of symmetrical position and equal size are arranged on the top thereof for mounting a rotating shaft; the main clamping member 21 and the fixed seat 22 of the first clamping assembly 2 are arranged in parallel, and their positions can be interchanged. The main clamping member 21 matches and fits with one end face of the heavy cylindrical workpiece, and the fixed seat 22 is on the other end face side of the heavy cylindrical workpiece. The main clamping member 21 and the fixed seat 22 are fixedly connected by two sets of lateral connecting members 23 by welding, assembly, etc.

[0035] The height adjustment assembly 3 includes an auxiliary clamping member 31, which is installed on one side of the fixed seat 22 close to the main clamping member 21, and is connected to the fixed seat 22 through a telescopic member 32. The connection is movably connected by pinning, hinged connection or other connection methods that can achieve angle change. The auxiliary clamping member 31 matches and fits with the other end face of the heavy cylindrical workpiece. When the telescopic length of the telescopic member 32 changes, the distance between the main clamping member 21 and the auxiliary clamping member 31 is adjustable, so as to adapt to workpieces of different sizes and increase the pressure on the two end faces of the heavy cylindrical workpiece to increase friction and achieve clamping.

[0036] Optionally, the main clamping member 21 and the auxiliary clamping member 31 are disc structures to adapt to heavy cylindrical workpieces with flat end surfaces of the adapting parts to achieve matching and fitting clamping.

[0037] The lateral connecting member 23 can be a rod structure or other connecting structure that can connect and fix the main clamping member 21 and the fixing seat 22. The two groups of lateral connecting members 23 are provided with axial holes 232 at corresponding positions. Each axial hole 232 and a coaxial mounting hole 11 are connected through a shaft sleeve 24, so that the lateral connecting member 23 can rotate with the coaxial mounting hole 11 (axial hole 232 or shaft sleeve 24) as the center of the circle; driven by the lateral connecting member 23, the workpiece fixed by the main clamping member 21 and the auxiliary clamping member 31 also rotates with it to achieve flipping.

[0038] The circumferential guard 4 is arranged between the main clamping part 21 and the auxiliary clamping part 31, that is, it is arranged on the circumferential side of the heavy cylindrical workpiece under application conditions. It is a semicircular hoop structure with an opening, and the two ends of the open side are respectively provided with axial holes 232 and correspond to the positions and apertures of the aforementioned coaxial mounting hole 11, the axial hole 232 of the lateral connecting part 23 and the sleeve 24 for combined assembly. When the lateral connecting part 23 rotates, the circumferential guard 4 also flips over with the fixed heavy cylindrical workpiece.

[0039] The present embodiment realizes fixing the two end faces of the heavy cylindrical workpiece through the main clamping member 21 of the first clamping assembly 2 and the auxiliary clamping member 31 of the height adjustment assembly 3, and changes the spacing between the main clamping member 21 and the auxiliary clamping member 31 by changing the length of the telescopic member 32, so as to adapt to the fixation of workpieces of different sizes in one direction of the flipping mechanism, and realizes lateral protection by arranging a circumferential protective member 4 on the circumference of the heavy cylindrical workpiece to prevent the workpiece from escaping from the flipping mechanism from the side, so that under stable and reliable fixing conditions, the two groups of lateral connecting members 23 connected to the support seat 1 through the shaft sleeve 24 can rotate around the shaft sleeve 24 as the center of the circle, thereby achieving the effect of driving the workpiece to flip, and based on its relatively simple structure, it is also more convenient and safe to use.

[0040] In the aforementioned embodiment, the circumferential protection member 4 can only provide lateral protection for the heavy cylindrical workpiece in a fixed direction to prevent it from escaping from the flipping mechanism. In order to improve the lateral stability of the workpiece during the flipping process and prevent the workpiece from loosening and escaping from other directions, the present application also provides a further improved implementation method, which is as follows:

[0041] Based on the above-mentioned embodiment, the flipping mechanism also includes a second clamping assembly 5, which includes a clamping chain 51 with one end fixed to one side of the opening of the circumferential protective member 4 and the other end movably fixed to the other side of the opening of the circumferential protective member 4. The clamping chain 51 and the circumferential protective member 4 form a complete encirclement of the heavy cylindrical workpiece to clamp the heavy cylindrical workpiece from the circumferential direction.

[0042] In this embodiment, the clamping chain 51 cooperates with the circumferential protection member 4 to form a complete encirclement to provide more secure clamping protection for the side of the workpiece. Compared with the open circumferential protection in the aforementioned embodiment, the flipping process is safer.

[0043] More specifically, see Figure 2 The present application also proposes a second clamping assembly 5 structure that can laterally match workpieces of different specifications to achieve a circumferential clamping effect: the second clamping assembly 5 also includes a fastening nut 54 installed on one side of the opening of the circumferential protective member 4 to fix one end of the clamping chain 51, and a tightening nut 52 and a bottom box 53 installed on the other side of the opening of the circumferential protective member 4, the tightening nut 52 passes through the bottom box 53 and the other end of the clamping chain 51 to form a fixation for different lengths of the clamping chain 51.

[0044] In this embodiment, one end of the clamping chain 51 is fixed by a tightening bolt, and the other end is movably fixed by tightening the nut 52 and the bottom box 53 structure, so that the encircling length of the clamping chain 51 can be adjusted to adapt to workpieces of different specifications; at the other end of the clamping chain 51, by means of the gap in the chain structure, the fixing position of the other end of the clamping chain 51 is changed by tightening the nut 52 and inserting the anchor, thereby changing the length of the clamping chain 51 between the two sides of the opening of the circumferential protective member 4.

[0045] In some embodiments, the telescopic member 32 includes a telescopic rod 321 connected to the adjustment driving member 322 , and the movable end of the telescopic rod 321 is movably connected to the auxiliary clamping member 31 and / or the fixed seat 22 via a fixed hinge seat 323 .

[0046] In the aforementioned embodiment, the movable connection between the auxiliary clamping member 31 and the fixed seat 22 can be a pin connection, a slide groove slide rail or other methods. Considering that the heavy cylindrical workpiece has a large mass and requires a stable force to clamp it, the present embodiment is connected by a telescopic rod 321 in conjunction with a fixed hinge seat 323, which can realize adaptive angular movable connection of the telescopic rod 321 when it is extended and retracted, and is also more stable in structure.

[0047] The adjusting driving member 322 is used to drive the length change of the telescopic rod 321, which can be achieved by hydraulic pressure or pneumatic pressure.

[0048] Optionally, the adjusting driving member 322 is a cylinder, and a plurality of the telescopic members 32 are cross-arranged between the auxiliary clamping member 31 and the fixing seat 22 .

[0049] Figure 4 A form of installation of a telescopic member 32 is shown, in which the adjusting driving members 322 are assembled in a form of active connection in pairs through an axial connection at the intersection, and both ends are telescopic rods 321 whose length can be changed under the action of the adjusting driving members 322, and the movable ends of the telescopic rods 321 are respectively hinged to the auxiliary clamping member 31 and the fixed seat 22 through a fixed hinge seat 323; when the telescopic rod 321 is extended or shortened, in conjunction with the angle change at the position of the fixed hinge seat 323, the auxiliary clamping member 31 and the fixed seat 22 can remain parallel to each other under the condition of distance change, so that the auxiliary clamping member 31 and the other end face of the heavy cylindrical workpiece maintain a matching and fitting state.

[0050] In the application scenario of hoisting the workpiece to the flipping mechanism or hoisting the workpiece out after the flipping work is completed, the integrated structure in the aforementioned embodiment may cause inconvenience to the lifting work, so the present application also proposes a further improvement scheme.

[0051] In some embodiments, each group of lateral connecting members 23 includes two connecting rods 231 with the same structure and hinged through an axial hole 232. The flipping mechanism also includes a locking assembly 6. Two locking assemblies 6 are provided on each group of lateral connecting members 23 and respectively pass through a connecting rod 231 and the circumferential protective member 4 to fix the relative angle between the two connecting rods 231.

[0052] Specifically, see Figure 5 The present application provides a locking assembly 6 with the following structural form: the locking assembly 6 includes a hand pull ring 61, a cylindrical pin 62 fixedly connected to the hand pull ring 61, a spring sleeve 63 sleeved on the cylindrical pin 62, a spring 64 embedded in the spring sleeve 63 and fixed at one end, and a boss 65 fixedly connected to the other end of the spring 64 and arranged on the cylindrical pin 62; corresponding through holes are provided on the circumferential protective member 4 and each connecting rod 231 for the cylindrical pin 62 to pass through.

[0053] See also Figure 3 The lateral connecting member 23 is composed of two connecting rods 231 with the same structure and an axial hole 232 at one end. When assembling, the positions of the axial holes 232 of the two connecting rods 231 are aligned, and the shaft sleeve 24 in the aforementioned embodiment is passed through the axial hole 232 and the coaxial mounting hole 11 to be installed on the support seat 1. The two connecting rods 231 can rotate independently with the position of the axial hole 232 as the center.

[0054] When loading or removing a workpiece from the flipping mechanism of the present application, one of the connecting rods 231 of the lateral connecting member 23 can be rotated, and the angle between the two connecting rods 231 changes from 180° to greater than 180°, so that the workpiece escapes from the encirclement formed by the flipping mechanism, thereby facilitating lifting.

[0055] In the embodiment of the lateral connecting member 23 composed of the above-mentioned two connecting rods 231, in order to ensure the fixing effect and stability of the flipping mechanism, it is also required that the relative angle between the two connecting rods 231 will not change during the flipping process. Therefore, a locking assembly 6 is also designed in this embodiment; the cylindrical pin 62 passes through the connecting rods 231 on both sides of the axial hole 232 to the circumferential protective member 4, thereby fixing the angle between the two connecting rods 231, and correspondingly fixing the relative position relationship between the circumferential protective member 4 and the lateral connecting member 23, so that the lateral connecting member 23 and the circumferential protective member 4 form an integral flipping fixing structure in the locked state, which is conducive to the safe implementation of the flipping process.

[0056] Furthermore, through the structural connection relationship between the components such as the spring 64, the boss 65 and the hand pull ring 61, the locking assembly 6 is usually in a locked state. When unlocking is required, the hand pull ring 61 and the compression spring 64 are pulled to make the cylindrical pin 62 withdraw from the circumferential protective member 4 and the through hole on each connecting rod 231 to complete the unlocking, so as to rotate one of the connecting rods 231 to facilitate the removal of the workpiece.

[0057] In summary, the lateral connecting member 23 structure formed by the connecting rod 231 in this embodiment and the use of the locking assembly 6 effectively solve the problem of inconvenient operation of the workpiece loading and flipping mechanism or difficulty in removing the workpiece after flipping in the aforementioned embodiments or prior art.

[0058] In some embodiments, see Figure 1 The flipping mechanism also includes a flipping driving member 7, and one or two shaft sleeves 24 are connected to the torque output end of the flipping driving member 7.

[0059] Optionally, the flip driving member 7 is a hand crank or a motor.

[0060] This embodiment mainly provides a power drive method for the flipping mechanism to achieve flipping, mainly using the action point of the shaft sleeve 24 in the aforementioned embodiment to connect the torque output end of the rotation drive workpiece, and can be connected in a coaxial action form at both ends. The torque output method can be achieved manually or electrically, the manual output method is a hand crank, and the electric output method is a motor. Regardless of the output method, compared with the aforementioned embodiment, the convenience of use and user experience of the flipping mechanism of this application can be improved.

[0061] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A turning mechanism for heavy cylindrical workpieces, characterized in that: The turning mechanism comprises: A support base, the support base comprising two coaxial mounting holes; A first clamping assembly, the first clamping assembly comprising a main clamping member and a fixing seat that are matched and clamped with an end surface of the heavy cylindrical workpiece, the main clamping member and the fixing seat are connected by two sets of lateral connecting members, and the two sets of lateral connecting members are respectively installed on a coaxial mounting hole through a shaft sleeve; A height adjustment component, the height adjustment component comprising a secondary clamping member disposed at one end of the fixing seat, the secondary clamping member being movably connected to a side of the fixing seat close to the main clamping member through a telescopic member; A circumferential protective member is arranged between the main clamping member and the auxiliary clamping member and has an opening in the circumferential direction, and is used to prevent the heavy cylindrical workpiece from escaping from the circumferential direction.

2. The turning mechanism according to claim 1, characterized in that: The flipping mechanism also includes a second clamping assembly, which includes a clamping chain with one end fixed to one side of the opening of the circumferential protective member and the other end movably fixed to the other side of the opening of the circumferential protective member. The clamping chain and the circumferential protective member form a complete encirclement of the heavy cylindrical workpiece to clamp the heavy cylindrical workpiece from the circumferential direction.

3. The turning mechanism according to claim 2, characterized in that: The second clamping assembly also includes a fastening nut installed on one side of the opening of the circumferential guard to fix one end of the clamping chain, and a tightening nut and a base box installed on the other side of the opening of the circumferential guard. The tightening nut passes through the base box and the other end of the clamping chain to fix different lengths of the clamping chain.

4. The turning mechanism according to claim 1, characterized in that: The telescopic member comprises a telescopic rod connected to the adjusting driving member, and the movable end of the telescopic rod is movably connected to the auxiliary clamping member and / or the fixed seat via a fixed hinge seat.

5. The turning mechanism according to claim 4, characterized in that: The adjusting driving member is a cylinder, and a plurality of the telescopic members are cross-arranged between the auxiliary clamping member and the fixing seat.

6. The turning mechanism according to claim 1, characterized in that: Each set of lateral connecting parts includes two connecting rods with the same structure and hinged through an axial hole. The flipping mechanism also includes a locking assembly. Two locking assemblies are provided on each set of lateral connecting parts and respectively pass through a connecting rod and the circumferential protective member to fix the relative angle of the two connecting rods.

7. The turning mechanism according to claim 6, characterized in that: The locking assembly includes a hand pull ring, a cylindrical pin fixedly connected to the hand pull ring, a spring sleeve sleeved on the cylindrical pin, a spring embedded in the spring sleeve and fixed at one end, and a boss fixedly connected to the other end of the spring and arranged on the cylindrical pin; corresponding through holes are provided on the circumferential protective member and each connecting rod for the cylindrical pin to pass through.

8. The turning mechanism according to claim 1, characterized in that: The flip mechanism also includes a flip driving member, and one or two shaft sleeves are connected to the torque output end of the flip driving member.

9. The turning mechanism according to claim 8, characterized in that: The flip driving member is a hand crank or a motor.

10. The turning mechanism according to claim 1, characterized in that: The main clamping member and the auxiliary clamping member are disc structures.

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