Foldable double-support roll-over stand

Abstract

The utility model relates to the technical field of machining auxiliary equipment, in particular to a foldable double-support roll-over stand which is characterized in that a main support and an auxiliary support are arranged at the two ends of a base respectively, the auxiliary support is rotatably connected with the base, and a rotation driving assembly is rotatably installed on the main support; one end of the main roll-over stand is fixedly connected with the output end of the rotation driving assembly, the other end of the main roll-over stand is detachably connected with the auxiliary roll-over stand through a bolt, the auxiliary roll-over stand is fixed to the top of the auxiliary support, a pin shaft connecting piece is arranged on the side wall, away from the main support, of the auxiliary support, a pin shaft seat is fixedly arranged on the base, and a pin shaft is rotationally connected with the pin shaft connecting piece and the pin shaft seat. The auxiliary support can rotate around the pin shaft and is opened from a state perpendicular to the base to a state forming a flat angle or even a reflex angle with the base, at the moment, the roll-over stand can meet the requirement of a single-side support, a gearbox can be hoisted into the roll-over stand from the side of the auxiliary support, the interference problem in the hoisting process of the double-support-frame gearbox is avoided, and the hoisting efficiency is improved. And the practicability and the convenience of the roll-over stand are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing auxiliary equipment, in particular to a foldable double-support turning frame. Background Art

[0002] The gearbox is one of the core components of the vehicle. It is a mechanism used to change the speed and torque from the engine. It can change the transmission ratio of the output shaft and the input shaft in a fixed or step-by-step manner. Its function and state directly affect the performance and safety of the car. During long-term use, due to frequent gear shifting operations, the internal parts of the gearbox may wear and deform, causing the gearbox to malfunction. The gearbox flip rack is a device used for automobile repair and maintenance. It can flip the gearbox over for easy repair and inspection. The application of the gearbox flip rack can improve the maintenance efficiency and safety. However, the support racks on the market can only achieve single-sided support or double-sided support. There is a lack of flip racks that can meet different support requirements. In addition, the existing double-support flip racks generally have a fixed connection between the support rack and the base. When the gearbox is hoisted onto the flip rack, there will be interference between the hoisting tools and the flip rack. The gearbox cannot be hoisted into place in one step, which affects the efficiency of maintenance and the convenience of the flip rack. Summary of the invention

[0003] In order to overcome the above technical problems, the utility model provides a foldable double-support turning frame.

[0004] The utility model provides a foldable double-support flip frame adopts the following technical solution:

[0005] A foldable double-support flip frame comprises a base, a main support, a secondary support, a main flip frame, a secondary flip frame and a rotation drive assembly, wherein the main support and the secondary support are both arranged on the upper part of the base, and the main support and the secondary support are respectively arranged at two end parts of the base, the main support is fixedly connected to the base, the secondary support is rotatably connected to the base, the rotation drive assembly is rotatably installed on the main support, one end of the main flip frame is fixedly connected to the output end of the rotation drive assembly, and the other end is detachably connected to the secondary flip frame by bolts, the secondary flip frame is fixedly arranged on the top of the secondary support, a pin connecting piece is arranged on the side wall of the secondary support away from the main support, a pin seat is fixedly arranged on the base, and the pin is rotatably connected to the pin connecting piece and the pin seat.

[0006] By adopting the above technical solution, the pin shaft connecting piece on the auxiliary support is rotatably connected with the pin shaft seat on the base through the pin shaft, that is, the auxiliary support can rotate around the pin shaft, and open from a state perpendicular to the base to a state at a right angle or even an advantageous angle to the base. At this time, the turning frame can meet the requirements of single-sided support, and the gearbox can also be hoisted from the side of the auxiliary support into the turning frame, avoiding the interference problem in the lifting process of the gearbox of the double-support frame, thereby improving the maintenance efficiency of the gearbox and enhancing the practicality and convenience of the turning frame.

[0007] Preferably, the rotation drive assembly includes a gear seat, a driving shaft, a driving gear, a driven gear, a worm, a worm wheel and a rotating shaft, the gear seat is arranged on the side wall inside the main support, one end of the driving shaft is rotatably connected to the gear seat, and the other end is rotatably connected to the main support, the driving gear is fixedly sleeved on the outside of the driving shaft, the driving gear is meshingly connected to the driven gear, the two ends of the worm are respectively rotatably connected to the two side walls of the main support, the driven gear is fixedly sleeved on the worm, the worm is meshingly connected to the worm wheel, the worm wheel is fixedly sleeved on the outside of the rotating shaft, the rotating shaft is rotatably installed on the main support, and the end of the rotating shaft is fixedly installed with a main flip frame.

[0008] Preferably, the main flip frame includes a vertical part, a horizontal part and a connecting plate, one end of the horizontal part is fixedly connected to the vertical part, and the other end is fixedly connected to the connecting plate, a connecting hole for a gearbox is provided on the horizontal part, the vertical part is fixedly connected to the end of the rotating shaft, and the connecting plate is detachably connected to the auxiliary flip frame by bolts.

[0009] Preferably, the auxiliary flip frame includes a support, an auxiliary rotating shaft, a flip frame support seat and a connecting seat, the support is fixedly arranged on the top of the auxiliary support, the auxiliary rotating shaft is rotatably installed on the support, the end of the auxiliary rotating shaft is fixedly connected to the flip frame support seat, the end of the flip frame support seat is fixedly connected to the connecting seat, and the connecting seat is detachably connected to the connecting plate by bolts.

[0010] By adopting the above technical solution, the connecting seat and the connecting plate are detachably connected by bolts, and when the auxiliary support needs to be opened, the connecting seat and the connecting plate are disassembled; when the connecting seat and the connecting plate are fastened and connected by bolts, the turning machine can achieve double-sided support, and when the rotating drive assembly drives the main turning frame to rotate, the auxiliary turning frame can also rotate accordingly to realize the turning of the gearbox.

[0011] Preferably, a top support assembly is provided below the connecting seat, and the top support assembly includes a fixing seat and a top support bolt. The fixing seat is fixedly provided on the flip frame support seat, and the top support bolt passes through the fixing seat from bottom to top and is in contact and connected with the lower end surface of the connecting plate, and the top support bolt is threadedly connected to the fixing seat.

[0012] Preferably, a nut is welded and fixed to the bottom of the fixing seat, and the supporting bolt is threadedly connected to the nut.

[0013] By adopting the above technical solution, a top support assembly is arranged under the connecting seat. When the gearbox needs double-sided support, in order to avoid interference during hoisting, the auxiliary support is first opened, the gearbox is hoisted into the flip frame and fixedly connected, and then the connecting seat and the connecting plate are connected by bolts to achieve double-sided support. However, when the gearbox is fixed on the main flip frame, due to the gravity of the gearbox, the main flip frame will be bent to a certain extent, thereby affecting the alignment of the connecting seat and the connecting holes on the connecting plate. At this time, the top support bolt supports the lower end of the connecting plate, and by rotating the top support bolt, the connecting plate is lifted upward step by step, so that the connecting seat and the connecting plate can be smoothly connected finally. A nut is welded at the bottom of the fixed seat, which can allow the top support bolt to have more threads attached, thereby improving the reliability of the top support assembly.

[0014] Preferably, the rotation drive assembly further comprises a hand crank handle, and the hand crank handle is detachably connected to the drive shaft.

[0015] Preferably, the rotation drive assembly further comprises a stop handle, wherein the stop handle is detachably fixed to the outside of the main support, and the stop handle is meshingly connected to the drive gear.

[0016] By adopting the above technical solution and setting a stop handle, when the gearbox is flipped to a suitable position by the hand crank handle, the stop handle is inserted into the main support so that it engages with the primary gear, and then the stop handle is fixed to the outer wall of the main support, the driving gear can be locked, the flip frame can be prevented from rotating freely, and the safety of the equipment can be improved.

[0017] Preferably, the auxiliary flip frame further comprises an auxiliary rotating handle, wherein the auxiliary rotating handle is fixedly mounted on one end of the auxiliary rotating shaft away from the connecting seat, and the auxiliary rotating handle is a rudder-like structure.

[0018] Preferably, the auxiliary flip frame further comprises a limit pin, the limit pin passes through the auxiliary rotating handle and is plug-in connected to the support, and the limit pin is threadedly connected to the auxiliary rotating handle.

[0019] By adopting the above technical solution and providing an auxiliary rotating handle, the auxiliary rotating shaft can be manually operated to drive the flip frame support seat to rotate, so as to align and connect the connecting seat and the connecting plate; by providing a limit pin, the auxiliary rotating handle can be locked when the secondary support is opened, so that it is fixed relative to the support seat, thereby avoiding the flip frame support seat from rotating randomly under the action of gravity and causing safety hazards.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. The utility model is a foldable double-support flip frame, in which the pin shaft connecting piece on the auxiliary support is rotatably connected with the pin shaft seat on the base through the pin shaft, that is, the auxiliary support can rotate around the pin shaft, and is opened from a state perpendicular to the base to a state at a flat angle or even an advantageous angle to the base. At this time, the flip frame can meet the requirements of single-sided support, and the gearbox can also be hoisted from the side of the auxiliary support into the flip frame, avoiding the interference problem in the lifting process of the gearbox of the double-support frame, thereby improving the maintenance efficiency of the gearbox and enhancing the practicality and convenience of the flip frame.

[0022] 2. The utility model is a foldable double-support flip frame, which is detachably connected to a connecting seat and a connecting plate by bolts. When the auxiliary support needs to be opened, the connecting seat and the connecting plate are disassembled; when the connecting seat and the connecting plate are fastened and connected by bolts, the flip machine can achieve double-sided support, and when the rotating drive assembly drives the main flip frame to rotate, the auxiliary flip frame can also rotate accordingly to achieve the flipping of the gearbox.

[0023] 3. The utility model provides a foldable double-support flip frame, which is equipped with a top support assembly under the connecting seat. When the gearbox needs double-sided support, in order to avoid interference during hoisting, the auxiliary support is first opened, the gearbox is hoisted into the flip frame and fixedly connected, and then the connecting seat and the connecting plate are connected by bolts to achieve double-sided support. However, when the gearbox is fixed on the main flip frame, the main flip frame will be bent to a certain extent due to the gravity of the gearbox, thereby affecting the alignment of the connecting seat and the connecting holes on the connecting plate. At this time, the top support bolt supports the lower end of the connecting plate, and by rotating the top support bolt, the connecting plate is lifted upward step by step, so that the connecting seat and the connecting plate can be smoothly connected finally. A nut is welded on the bottom of the fixed seat, which can enable the top support bolt to have more threads attached, thereby improving the reliability of the top support assembly.

[0024] 4. The utility model is a foldable double-support flip frame. By setting a stop handle, when the gearbox is flipped to a suitable position by a hand crank handle, the stop handle is inserted into the main support to engage with the drive gear, and then the stop handle is fixed to the outer wall of the main support to lock the drive gear, prevent the flip frame from rotating freely, and improve the safety of the equipment.

[0025] 5. The utility model provides a foldable double-support flip frame, which can be manually operated to make the auxiliary rotating shaft drive the flip frame support seat to rotate by providing an auxiliary rotating handle, so as to facilitate the alignment and connection of the connecting seat and the connecting plate; by providing a limit pin, the auxiliary rotating handle can be locked when the secondary support is opened, so that it is fixed relative to the support, thereby avoiding the flip frame support seat from rotating randomly under the action of gravity and causing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a foldable double-support flip frame of the utility model Figure 1 ;

[0027] Figure 2 A schematic diagram of a foldable double-support flip frame of the utility model Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the main support, main turning frame and rotation drive assembly of the foldable double-support turning frame;

[0029] Figure 4 for Figure 3 Enlarged view at A in the middle;

[0030] Figure 5 A schematic diagram of a main flip frame and a secondary flip frame of a foldable double-support flip frame;

[0031] Figure 6 for Figure 5 Enlarged view at B in the middle;

[0032] Figure 7 It is a schematic diagram of a foldable double-support flip frame of the utility model when it is opened.

[0033] Explanation of the accompanying drawings: 1. base; 11. pin seat; 2. main support; 3. auxiliary support; 31. pin connector; 4. main flip frame; 41. vertical part; 42. horizontal part; 43. connecting plate; 5. auxiliary flip frame; 51. support; 52. auxiliary rotating shaft; 53. flip frame support seat; 54. connecting seat; 55. top support assembly; 551. fixed seat; 552. top support bolt; 553. nut; 56. auxiliary rotating handle; 57. limit pin; 6. rotation drive assembly; 61. gear seat; 62. drive shaft; 621. primary drive shaft; 622. secondary drive shaft; 63. drive gear; 631. primary gear; 632. secondary gear; 64. driven gear; 65. worm; 66. worm wheel; 67. rotating shaft; 68. hand crank handle; 69. stop handle; 7. oil collecting box. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-Figure 7 The utility model is described in further detail.

[0035] This embodiment discloses a foldable double-support flip frame. Figure 1-Figure 3, including a base 1, a main support 2, a secondary support 3, a main flip frame 4, a secondary flip frame 5 and a rotation drive assembly 6, the main support 2 and the secondary support 3 are both arranged on the upper part of the base 1, the main support 2 and the secondary support 3 are respectively arranged at the two ends of the base 1, the main support 2 is fixedly connected to the base 1, and a pin shaft connecting member 31 is arranged on the side wall of the secondary support 3 away from the main support 2, and a pin shaft seat 11 is fixedly arranged on the base 1, so that the secondary support 3 is rotatably connected to the base 1 through the pin shaft, that is, the secondary support 3 can rotate around the pin shaft, and open from a state perpendicular to the base 1 to a state at a right angle or even a superior angle to the base 1, the rotation drive assembly 6 includes a gear seat 61, a driving shaft 62, a driving gear 63, a driven gear 64, a worm 65, a worm wheel 66 and a rotating shaft 67, the gear seat 61 is vertically arranged on a side wall inside the main support 2, one end of the driving shaft 62 is rotatably connected to the gear seat 61, and the other end is rotatably connected to the main support 2, the driving gear 63 is fixedly sleeved on the outside of the driving shaft 62, and the driving gear The wheel 63 is meshed with the driven gear 64, and the two ends of the worm 65 are rotatably connected to the two side walls of the main support 2 respectively. The driven gear 64 is fixedly sleeved on the worm 65, and the worm 65 is meshed with the worm wheel 66. The worm wheel 66 is fixedly sleeved on the outside of the rotating shaft 67. The rotating shaft 67 is rotatably installed on the main support 2, and the end of the rotating shaft 67 is fixedly installed with the main turning frame 4; one end of the main turning frame 4 is fixedly connected with the rotating shaft 67, and the other end is detachably connected with the auxiliary turning frame 5 by bolts. The auxiliary turning frame 5 is fixedly set on the top of the auxiliary support 3, that is, the driving shaft 62 is driven by external power, and the rotation of the driving gear 63 drives the driven gear 64 to rotate. The driven gear 64 transmits the power to the worm wheel 66 through the worm 65, and the worm wheel 66 can drive the rotating shaft 67 to rotate, and then the main turning frame 4 fixedly connected thereto can rotate; in order to avoid the dirt of the turning frame caused by oil dripping during the maintenance of the gearbox, an oil receiving box 7 is also provided on the base 1, and the oil receiving box 7 is arranged below the main turning frame 4.

[0036] Among them, Figure 1-Figure 5As shown, the main flip frame 4 includes a vertical portion 41, a horizontal portion 42 and a connecting plate 43. The vertical portion 41 is fixedly connected to the end of the rotating shaft 67. One end of the horizontal portion 42 is fixedly connected to the vertical portion 41, and the other end is fixedly connected to the connecting plate 43. The horizontal portion 42 is provided with a connecting hole for a gearbox. The auxiliary flip frame 5 includes a support 51, an auxiliary rotating shaft 52, a flip frame support seat 53 and a connecting seat 54. The support 51 is fixedly arranged on the top of the auxiliary support 3. The auxiliary rotating shaft 52 is rotatably connected to the support 51 through a bearing. The end of the rotating shaft 52 is fixedly connected to a turning frame support seat 53, and the end of the turning frame support seat 53 is fixedly installed with a connecting seat 54, and the connecting seat 54 is detachably connected to the connecting plate 43 by bolts; when the auxiliary support 3 needs to be opened, the connecting seat 54 and the connecting plate 43 are disassembled; when the connecting seat 54 and the connecting plate 43 are fastened and connected by bolts, the turning machine can achieve double-sided support, and when the rotating drive assembly 6 drives the main turning frame 4 to rotate, the auxiliary turning frame 5 can also rotate accordingly to achieve the turning of the gearbox.

[0037] Among them, Figure 5-Figure 7 As shown, a top support assembly 55 is arranged below the connecting seat 54, and the top support assembly 55 includes a fixing seat 551 and a top support bolt 552. The fixing seat 551 is fixedly arranged on the turning frame support seat 53, and the fixing seat 551 is arranged below the connecting seat 54. The top support bolt 552 passes through the fixing seat 551 from bottom to top, and is in contact with the lower end surface of the connecting plate 43. A nut 553 is welded and fixed at the bottom of the fixing seat 551, and the top support bolt 552 is threadedly connected to the fixing seat 551 and the nut 553. When the gearbox needs to be supported on both sides, in order to avoid interference in lifting, the auxiliary support 3 is first opened, the gearbox is lifted into the turning frame and fixedly connected, and then the auxiliary support 3 is The support 3 is returned to its position, and the connecting seat 54 and the connecting plate 43 are fastened together by bolts to achieve double-sided support of the flip frame. However, when the gearbox is fixed on the main flip frame 4, due to the gravity of the gearbox, the main flip frame 4 will be bent to a certain extent, thereby affecting the alignment of the connecting seat 54 with the connecting holes on the connecting plate 43. At this time, the supporting bolt 552 supports the lower end of the connecting plate 43, and by rotating the supporting bolt 552, the connecting plate 43 is lifted upward step by step, so that the connecting seat 54 and the connecting plate 43 can be smoothly connected finally. The setting of the nut 553 can make the supporting bolt 552 have more threads attached, thereby improving the reliability of the supporting assembly 55.

[0038] Among them, Figure 3-Figure 4As shown, the rotation drive assembly 6 also includes a hand crank handle 68 and a stop handle 69. The hand crank handle 68 is detachably connected to the drive shaft 62, and the stop handle 69 is detachably fixed to the outside of the main support 2. The stop handle 69 is meshed and connected with the drive gear 63. The drive gear 63 is provided with two groups, namely, a primary gear 631 and a secondary gear 632. The corresponding drive shaft 62 fixedly connected to the drive gear 63 is also provided with two groups, namely, a primary drive shaft 621 and a secondary drive shaft 622. The primary gear 631 is meshed and connected with the secondary gear 632. The secondary gear 632 is meshed and connected with the driven gear 64. The number of teeth of the primary gear 631 is less than the number of teeth of the secondary gear 632. The two-stage gear is provided so that a suitable drive gear 63 can be selected according to the weight of the gearbox. The hand crank handle 68 is connected to the corresponding drive shaft 62. The number of teeth of the primary gear 631 is less than the number of teeth of the secondary gear 632. That is, it is more labor-saving to drive the gearbox to flip through the primary gear 631 than the secondary gear 632. After the gearbox is flipped to a suitable position by the hand crank handle 68, the stop handle 69 is inserted into the main support 2 to engage with the first-stage gear 631, and then the stop handle 69 is fixed to the outer wall of the main support 2 to lock the drive gear 63, preventing the flip frame from rotating freely and improving the safety of the equipment.

[0039] Among them, Figure 1 As shown, the auxiliary flip frame 5 also includes an auxiliary rotating handle 56 and a limit pin 57. The auxiliary rotating handle 56 is fixedly installed at one end of the auxiliary rotating shaft 52 away from the connecting seat 54. The auxiliary rotating handle 56 is a rudder-like structure. The limit pin 57 passes through the auxiliary rotating handle 56 and is plugged and unplugged with the support 51. The limit pin 57 is threadedly connected to the auxiliary rotating handle 56. Manually rotating the auxiliary rotating handle 56 can drive the flip frame support seat 53 to rotate, so that the connecting seat 54 and the connecting plate 43 are aligned and connected; the limit pin 57 can lock the auxiliary rotating handle 56 when the auxiliary support 3 is opened, so that it is fixed relative to the support 51, thereby avoiding the flip frame support seat 53 from rotating randomly under the action of gravity to cause safety hazards.

[0040] The working principle of this embodiment is as follows: when the gearbox needs a single-sided support frame, the connecting bolts of the connecting seat 54 and the connecting plate 43 are disassembled, and then the limit pin 57 is screwed into the auxiliary rotating handle 56, so that it is inserted into the support 51 to lock the auxiliary rotating handle 56 to prevent the flip frame support seat 53 from rotating randomly under the action of gravity and causing safety hazards. Then the secondary support 3 is opened, so that it is opened from a state perpendicular to the base 1 to a state at a right angle or even an advantageous angle to the base 1, and then the stop handle 69 is inserted into the main support 2 to engage with the primary gear 631, and then the stop handle 69 is fixed on the outer wall of the main support 2, so that the driving gear 63 can be locked to prevent the flip frame from rotating freely. At this time, the gearbox is hoisted to the main flip frame 4 and fixedly installed to realize the single-sided support flip frame of the gearbox; when the gearbox needs a double-sided support frame to be repaired, in order to avoid interference problems in the gearbox hoisting process, first of all, the secondary support 3 is opened, the stop handle 69 is used to lock the driving gear 63, the gearbox is hoisted to the main flip frame 4 and fixedly installed The auxiliary support 3 is then returned to its original position. At this time, the main tilting frame 4 is locked and cannot rotate. The connecting seat 54 and the connecting plate 43 may have an angular deviation and cannot be aligned. At this time, the limit pin 57 is unscrewed from the support 51, and the auxiliary rotating handle 56 is manually rotated to drive the tilting frame support seat 53 to rotate, so as to align the connecting seat 54 and the connecting plate 43. The gearbox is fixed on the main tilting frame 4. Due to the gravity of the gearbox, the main tilting frame 4 will be bent to a certain extent, thereby affecting the alignment of the connecting seat 54 with the connecting holes on the connecting plate 43. At this time, by rotating the top support bolt 552, the connecting plate 43 is lifted upward step by step, and finally the connecting seat 54 and the connecting plate 43 can be smoothly connected. During the maintenance of the gearbox, the gearbox is turned over by the hand crank handle 68. When it is adjusted to the required angle, the stop handle 69 is inserted into the main support 2 to engage with the driving gear 63. Then the stop handle 69 is fixed to the outer wall of the main support 2 to achieve locking of the driving gear 63, preventing the tilting frame from rotating freely and improving the safety of the equipment.

[0041] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A foldable double-support flip frame, characterized in that: The invention comprises a base (1), a main support (2), a secondary support (3), a main turning frame (4), a secondary turning frame (5) and a rotation drive assembly (6), wherein the main support (2) and the secondary support (3) are both arranged on the upper part of the base (1), and the main support (2) and the secondary support (3) are respectively arranged at two ends of the base (1), the main support (2) is fixedly connected to the base (1), the secondary support (3) is rotationally connected to the base (1), the rotation drive assembly (6) is rotationally mounted on the main support (2), one end of the main turning frame (4) is fixedly connected to the output end of the rotation drive assembly (6), and the other end is detachably connected to the secondary turning frame (5) by bolts, the secondary turning frame (5) is fixedly arranged on the top of the secondary support (3), a pin connecting piece (31) is arranged on the side wall of the secondary support (3) away from the main support (2), a pin seat (11) is fixedly arranged on the base (1), and the pin connecting piece (31) is rotationally connected to the pin seat (11) by a pin.

2. The foldable double-support turning frame according to claim 1, characterized in that: The rotary drive assembly (6) comprises a gear seat (61), a drive shaft (62), a drive gear (63), a driven gear (64), a worm (65), a worm wheel (66) and a rotating shaft (67); the gear seat (61) is arranged on a side wall inside the main support (2); one end of the drive shaft (62) is rotatably connected to the gear seat (61), and the other end is rotatably connected to the main support (2); the drive gear (63) is fixedly sleeved outside the drive shaft (62); The driven gear (63) is meshedly connected with the driven gear (64), the two ends of the worm (65) are rotatably connected to the two side walls of the main support (2), the driven gear (64) is fixedly sleeved on the worm (65), the worm (65) is meshedly connected with the worm wheel (66), the worm wheel (66) is fixedly sleeved on the outside of a rotating shaft (67), the rotating shaft (67) is rotatably mounted on the main support (2), and the main turning frame (4) is fixedly mounted on the end of the rotating shaft (67).

3. The foldable double-support turning frame according to claim 2, characterized in that: The main turning frame (4) comprises a vertical portion (41), a horizontal portion (42) and a connecting plate (43); one end of the horizontal portion (42) is fixedly connected to the vertical portion (41), and the other end is fixedly connected to the connecting plate (43); a connecting hole for a gearbox is provided on the horizontal portion (42); the vertical portion (41) is fixedly connected to the end of a rotating shaft (67); and the connecting plate (43) is detachably connected to the auxiliary turning frame (5) via bolts.

4. The foldable double-support turning frame according to claim 3, characterized in that: The auxiliary turning frame (5) comprises a support (51), an auxiliary rotating shaft (52), a turning frame support seat (53) and a connecting seat (54); the support (51) is fixedly arranged on the top of the auxiliary support (3); the auxiliary rotating shaft (52) is rotatably mounted on the support (51); the end of the auxiliary rotating shaft (52) is fixedly connected to the turning frame support seat (53); the end of the turning frame support seat (53) is fixedly connected to the connecting seat (54); and the connecting seat (54) is detachably connected to the connecting plate (43) via bolts.

5. The foldable double-support turning frame according to claim 4, characterized in that: A supporting assembly (55) is provided below the connecting seat (54), the supporting assembly (55) comprising a fixing seat (551) and a supporting bolt (552), the fixing seat (551) being fixedly provided on the flip frame supporting seat (53), the supporting bolt (552) passing through the fixing seat (551) from bottom to top and contactingly connected with the lower end surface of the connecting plate (43), the supporting bolt (552) being threadedly connected with the fixing seat (551).

6. The foldable double-support turning frame according to claim 5, characterized in that: A nut (553) is welded and fixed to the bottom of the fixing seat (551), and the supporting bolt (552) is threadedly connected to the nut (553).

7. The foldable double-support turning frame according to claim 2, characterized in that: The rotary drive assembly (6) further comprises a hand crank handle (68), wherein the hand crank handle (68) is detachably connected to the drive shaft (62).

8. The foldable double-support turning frame according to claim 2, characterized in that: The rotation drive assembly (6) further comprises a stop handle (69), wherein the stop handle (69) is detachably fixed to the outside of the main support (2), and the stop handle (69) is meshingly connected to the drive gear (63).

9. The foldable double-support turning frame according to claim 4, characterized in that: The auxiliary turning frame (5) further comprises an auxiliary rotating handle (56), wherein the auxiliary rotating handle (56) is fixedly mounted on an end of the auxiliary rotating shaft (52) away from the connecting seat (54), and the auxiliary rotating handle (56) is a rudder-like structure.

10. The foldable double-support turning frame according to claim 9, characterized in that: The auxiliary flip frame (5) further comprises a limit pin (57), the limit pin (57) passes through the auxiliary rotating handle (56) and is plug-in connected to the support (51), and the limit pin (57) is threadedly connected to the auxiliary rotating handle (56).

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