Bidirectional controllable pneumatic rotating mechanism and machine tool

Abstract

The bidirectional controllable pneumatic rotating mechanism comprises a right driving assembly, a left driving assembly, a ratchet wheel disc assembly, a pawl assembly, a machine frame and an output ratchet wheel, the ratchet wheel disc assembly, the left driving assembly and the right driving assembly are all rotatably connected with the machine frame, the pawl assembly is provided with a swing pawl, and the swing pawl is arranged on the output ratchet wheel. The pawl assembly is rotationally connected with the ratchet wheel disc assembly, and at least one set of driving assembly of the right driving assembly and the left driving assembly is rotationally connected with the pawl assembly. The utility model has the beneficial effects that the technical scheme that the swinging pawl and at least one group of driving components are rotatably connected with the pawl component is adopted, and the swinging movement and the direction of the swinging pawl can be controlled by controlling the driving sequence, so that the rotation and the direction of the output ratchet wheel can be controlled and driven; and by repeating output in a certain direction, direction-controllable continuous rotating motion can be realized at low cost, the size is small, the structure is simple, and the output torque is large.

Description

Technical Field

[0001] The utility model relates to the field of clamps and fixtures, in particular to a bidirectional controllable pneumatic rotating mechanism. Background Art

[0002] The motor can output continuous rotational motion and can achieve controllable rotation direction, but the motor cost is relatively high and the output torque is relatively small. The cylinder is often used in the field of automation due to its low cost and simple structure. However, in the field of continuous rotational motion, since the cylinder is good at linear motion, it is more difficult to use it in continuous and direction-controlled rotational motion. The technical problem of how to use the cylinder to achieve continuous and direction-controlled rotational motion at low cost has been plaguing people for many years.

[0003] Therefore, after intensive research, the inventors have proposed a technical solution for a bidirectional controllable pneumatic rotating mechanism, which can also be extended to other technical fields. Summary of the invention

[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model discloses a bidirectional controllable pneumatic rotating mechanism, including: a right driving component, a left driving component, a ratchet disc component, a pawl component, a frame, and an output ratchet wheel. The ratchet disc component and the left driving component and the right driving component are all rotatably connected to the frame. The output ratchet wheel is rotatably connected to the ratchet disc. A first transmission tooth is arranged on the outer side of the output ratchet wheel. The pawl component and the ratchet disc component are swingably connected. The pawl component is provided with a swinging pawl. At least one group of driving components of the right driving component and the left driving component is rotatably connected to the pawl component. When one group of driving components is rotatably connected to the pawl component, the other group of driving components is rotatably connected to the ratchet disc. At this time, the swinging pawl is a bidirectional pawl. When both groups of driving components are connected to the pawl component, the swinging pawl is two independent unidirectional pawls installed in opposite directions. By controlling the driving sequence of the left driving component and the right driving component, the

[0005] The swinging motion and direction of the pawl assembly relative to the ratchet disc assembly are now controlled to thereby control and drive the rotation and rotation direction of the output ratchet.

[0006] In which, the pawl assembly includes a first swinging pawl and a first pawl shaft, the first swinging pawl is rotatably connected to the first pawl shaft, the first swinging pawl is provided with a first left pawl tooth, a first right pawl tooth and a first swing connecting hole, the inner sides of the first left pawl tooth and the first right pawl tooth are gentle inclined surfaces, the first pawl shaft is provided between the first left pawl tooth, the first right pawl tooth and the first swing connecting hole, close to the first left pawl tooth and the first right pawl tooth, the first pawl shaft is fixedly connected to the ratchet disk assembly.

[0007] Wherein, the ratchet disc assembly comprises a first upper ratchet disc and a first lower ratchet disc, the first upper ratchet disc is provided with a first upper radial protrusion assembly, the first upper ratchet disc is provided with a first upper sunken groove inside, the first lower ratchet disc is provided with a first lower radial protrusion assembly, the first lower ratchet disc is provided with a first sunken groove inside, a first transversely penetrating movable groove is provided in the first upper sunken groove, a coaxial first pawl assembly mounting hole is provided in the first upper sunken groove and the first sunken groove, and the first lower sunken groove is also provided with a first left drive assembly mounting hole;

[0008] Among them, the first upper groove is relatively connected with the first lower groove, and the first upper ratchet plate is coaxial and fixedly connected with the first lower ratchet plate, the pawl assembly is fixed in the first pawl assembly mounting hole, and is located in the first upper groove and the first lower groove, and can drive the output ratchet to rotate through the first transmission tooth, and the output ratchet is located in the first upper groove and the first lower groove, and is rotatably connected to the first upper ratchet plate and the first lower ratchet plate.

[0009] Among them, the right driving component includes a first right driving cylinder, a first right driving cylinder mounting plate, a first right connecting block, and a first right driving shaft. The first right driving cylinder mounting plate is rotatably connected to the frame. The first right driving shaft is inserted into the first transverse movable groove and the first swing connecting hole, and is fixedly connected to the first right connecting block. The first right driving cylinder is fixedly connected to the first right driving cylinder mounting plate, and the first right connecting block is fixed to the output end of the first right driving cylinder.

[0010] Among them, the left drive assembly includes a first left drive cylinder, a first left drive cylinder mounting plate, a first left connecting block, and a first left drive shaft. The first left drive cylinder mounting plate is rotatably connected to the frame, the first left drive cylinder is fixedly connected to the first left drive cylinder mounting plate, the first left connecting block is fixed to the output end of the first left drive cylinder, the first left connecting block is fixed to the first left drive shaft, and the first left drive shaft is rotatably set in the mounting hole of the first left drive assembly.

[0011] In which, the pawl assembly includes a second swinging upper pawl, a second swinging lower pawl, and a second swinging pawl rotating shaft, the second swinging pawl rotating shaft is fixedly connected to the ratchet disk assembly, the second swinging upper pawl is rotatably connected to the second swinging pawl rotating shaft, the second swinging lower pawl is rotatably connected to the second swinging pawl rotating shaft, the second swinging upper pawl is located above the second swinging lower pawl, one end of the second swinging upper pawl is provided with a protruding second upper pawl tooth, one end of the second swinging lower pawl is provided with a protruding second lower pawl tooth, the inner sides of the second upper pawl tooth and the second lower pawl tooth are gently inclined surfaces, the other end of the second swinging upper pawl is provided with a second upper swing connecting hole, and the other end of the second swinging lower pawl is provided with a second lower swing connecting hole.

[0012] Wherein, the ratchet disc assembly comprises a second upper ratchet disc and a second lower ratchet disc, the second upper ratchet disc is provided with a second upper radial protrusion assembly, the second upper ratchet disc is provided with a second upper sunken groove inside, the second lower ratchet disc is provided with a second lower radial protrusion assembly, the second lower ratchet disc is provided with a second lower sunken groove inside, the second upper sunken groove is provided with a second transverse upper through-active groove, the second lower sunken groove is provided with a second transverse lower through-active groove, and the second upper sunken groove and the second sunken groove are provided with a coaxial second pawl assembly mounting hole;

[0013] The second upper groove is relatively connected to the second lower groove, and the second upper ratchet plate is coaxial and fixedly connected to the second lower ratchet plate. The pawl assembly is fixed in the second pawl assembly mounting hole and is located between the second upper groove and the first lower groove, and can drive the output ratchet to rotate through the first transmission tooth. The output ratchet is located in the second upper groove and the second lower groove, and is rotatably connected to the second upper ratchet plate and the second lower ratchet plate.

[0014] Among them, the right driving assembly includes a second right driving cylinder, a second right driving cylinder mounting plate, a second right connecting block, and a second right driving shaft. The second right driving cylinder mounting plate is rotatably connected to the frame. The second right driving shaft is inserted into the second transversely penetrating movable groove and the second upper swing connecting hole, and is fixedly connected to the second right connecting block. The second right driving cylinder is fixedly connected to the second right driving cylinder mounting plate, and the second right connecting block is fixed to the output end of the second right driving cylinder.

[0015] Among them, the left driving assembly includes a second left driving cylinder, a second left driving cylinder mounting plate, a second left connecting block, and a second left driving shaft. The second left driving cylinder mounting plate is rotatably connected to the frame, the second left driving cylinder is fixedly connected to the second left driving cylinder mounting plate, the second left connecting block is fixed to the output end of the second left driving cylinder, the second left driving shaft is inserted into the second horizontal lower through-active groove and the second lower swing connecting hole, and is fixedly connected to the second left connecting block.

[0016] According to a second aspect of the utility model, there is also provided a machine tool, comprising a machine body and the above-mentioned bidirectional controllable pneumatic rotating mechanism installed on the machine body.

[0017] Compared with the prior art, the bidirectional controllable pneumatic rotation mechanism of the utility model has the following beneficial effects: the utility model adopts a swinging pawl, and at least one group of driving components rotatably connected to the pawl component. By controlling the driving sequence, the swinging motion and direction of the swinging pawl can be controlled, and then the rotation and direction of the output ratchet can be controlled and driven. Repeating the output in a certain direction can achieve direction-controllable continuous rotation motion at a low cost. It has a small size, a simple structure, and a large output torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a three-dimensional diagram of the utility model; Figure 2 For example

[0020] 1 stereogram;

[0021] Figure 3 is a cross-sectional view of Example 1;

[0022] Figure 4 It is an exploded view of Example 1;

[0023] Figure 5 is a top view of the pawl assembly of Example 1; Figure 6 For example

[0024] 2 stereogram;

[0025] Figure 7 is a cross-sectional view of Example 2;

[0026] Figure 8It is an exploded view of Example 2;

[0027] Fig. 9 This is a stereoscopic view of the pawl assembly of Example 2. DETAILED DESCRIPTION

[0028] The following is a detailed description of the embodiments of the present invention so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer definition of the scope of protection of the present invention. The accompanying drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in this field should be able to understand other possible implementations and the advantages of the present invention. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] 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 utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] See attached Figure 1 , 23. A bidirectional controllable pneumatic rotary mechanism, comprising: a right drive assembly 1, a left drive assembly 2, a ratchet disc assembly 3, a pawl assembly 4, a frame 5, and an output ratchet 6. The ratchet disc assembly 3 and the left drive assembly 2 and the right drive assembly 1 are all rotatably connected to the frame 5. The output ratchet 6 is rotatably connected to the ratchet disc 3. A first transmission tooth D001 is arranged on the outer side of the output ratchet 6. The pawl assembly 4 is swingably connected to the ratchet disc assembly 3. The pawl assembly 4 is provided with a swinging pawl. The right drive assembly 1 and the left drive assembly 2 are at least one set of drive assemblies. It is rotatably connected to the pawl assembly 4. When one set of drive assemblies is rotatably connected to the pawl assembly 4, the other set of drive assemblies is rotatably connected to the ratchet disk 3. At this time, the swinging pawl is a bidirectional pawl. When both sets of drive assemblies are connected to the pawl assembly 4, the swinging pawls are two independent unidirectional pawls installed in opposite directions. By controlling the driving sequence of the left drive assembly 3 and the right drive assembly 1, the swinging movement and direction of the pawl assembly 4 relative to the ratchet disk assembly 3 can be controlled, thereby controlling and driving the rotation and rotation direction of the output ratchet 6.

[0032] In the embodiments of the present application, refer to the attached Figure 2 , 3 4. In embodiment 1, the pawl assembly 14 includes a first swinging pawl 1401 and a first pawl shaft 1402. The first swinging pawl 1401 is rotatably connected to the first pawl shaft 1402. The first swinging pawl 1401 is provided with a first left pawl tooth C101, a first right pawl tooth C102 and a first swing connecting hole C103. The inner sides of the first left pawl tooth C101 and the first right pawl tooth C102 are gentle inclined surfaces. The first pawl shaft 1402 is provided between the first left pawl tooth C101, the first right pawl tooth C102 and the first swing connecting hole C103, close to the first left pawl tooth C101 and the first right pawl tooth C102. The first pawl shaft 1402 is fixedly connected to the ratchet disk assembly 13.

[0033] The ratchet disc assembly 13 includes a first upper ratchet disc 1301 and a first lower ratchet disc 1302. The first upper ratchet disc 1301 is provided with a first upper radial protrusion assembly T101. The first upper ratchet disc 1301 is provided with a first upper recessed groove T102. The first lower ratchet disc 1302 is provided with a first lower radial protrusion assembly T103. The first lower ratchet disc 1302 is provided with a first lower recessed groove T104. The first upper recessed groove T102 is provided with a first transversely penetrating movable groove T105. The first upper recessed groove T102 and the first lower recessed groove T104 are provided with a coaxial first pawl assembly mounting hole T106. The first lower recessed groove T102 is also provided with a first left drive assembly mounting hole T107.

[0034] The first upper groove T102 is relatively connected to the first lower groove T104, and the first upper ratchet plate 1301 is coaxial and fixedly connected to the first lower ratchet plate T1302. The pawl assembly 14 is fixed in the first pawl assembly mounting hole T106, and is located in the first upper groove T102 and the first lower groove T104, and can drive the output ratchet 6 to rotate through the first transmission tooth D001. The output ratchet 6 is located in the first upper groove T102 and the first lower groove T104, and is rotatably connected to the first upper ratchet plate 1301 and the first lower ratchet plate 1302.

[0035] The right driving assembly 11 includes a first right driving cylinder 1101, a first right driving cylinder mounting plate 1102, a first right connecting block 1103, and a first right driving shaft 1104. The first right driving cylinder mounting plate 1102 is rotatably connected to the frame 5. The first right driving shaft 1104 is inserted into the first transverse movable groove T105 and the first swing connecting hole C103, and is fixedly connected to the first right connecting block 1103. The first right driving cylinder 1101 is fixedly connected to the first right driving cylinder mounting plate 1102, and the first right connecting block 1103 is fixedly connected to the output end of the first right driving cylinder 1101.

[0036] The left drive assembly 12 includes a first left drive cylinder 1201, a first left drive cylinder mounting plate 1202, a first left connecting block 1203, and a first left drive shaft 1204. The first left drive cylinder mounting plate 1202 is rotatably connected to the frame 5. The first left drive cylinder 1201 is fixedly connected to the first left drive cylinder mounting plate 1202. The output end of the first left drive cylinder 1201 is fixed with a first left connecting block 1203. The first left connecting block 1203 is fixed with a first left drive shaft 1204. The first left drive shaft 1204 is rotatably arranged in the first left drive assembly mounting hole T107.

[0037] Its usage or working principle is:

[0038] When the output ratchet is to output clockwise motion, the first left drive cylinder inputs low-pressure gas or no gas. At this time, the output end of the first left drive cylinder outputs a small thrust or is in a free state. Then the first right drive cylinder inputs high-pressure gas, and the output end ejects. Since the output end of the first left drive cylinder outputs a small thrust or is in a free state, the first right drive cylinder will first push the first swing pawl to swing clockwise. At this time, the first left ratchet tooth contacts the first transmission tooth and pushes the first transmission tooth to move clockwise. Then the first left drive cylinder can input high-pressure gas to retract the output end of the first left drive cylinder, and the first right drive cylinder continues to output motion, then the first left ratchet tooth continues to push the first transmission tooth to contact the clockwise direction. When the first right drive cylinder rotates clockwise, when the first right drive cylinder reaches the limit stroke, the first right drive cylinder disconnects the high-pressure gas or outputs low-pressure pneumatic. At this time, the output end of the first right drive cylinder outputs a small thrust or is in a free state. Then the first right cylinder outputs a high-pressure cylinder and outputs a retraction motion, pushing the ratchet disc assembly to rotate counterclockwise. At this time, since the output end of the first right drive cylinder outputs a small thrust or is in a free state, the first swing pawl rotates counterclockwise as a whole, and the first left pawl tooth is in a state of being attached to the first transmission tooth. At this time, the first swing pawl and the output ratchet are in a power disconnected state; repeating the above actions can achieve continuous clockwise motion output. If counterclockwise motion is required, the above actions can be performed in reverse.

[0039] The beneficial effect of this embodiment is that the right drive assembly and the first swing pawl are rotatably connected through the first swing connecting hole, and the left drive assembly and the ratchet disk assembly are rotatably connected. The driving sequence of the left drive assembly and the right drive assembly is controlled, and the technical solution of the swinging movement and direction of the first swing pawl relative to the ratchet disk assembly can be realized. Continuous rotational movement with controllable direction can be realized at low cost, which greatly reduces the cost, has a small size, a simple structure and a large output torque.

[0040] In some embodiments of the present application, Figure 5 , 6 , 7, 8, the pawl assembly 24 of embodiment 2 includes a second swing upper pawl 2401, a second swing lower pawl 2402, and a second swing pawl shaft 2403, the second swing pawl shaft 2403 is fixedly connected to the ratchet disk assembly 23, the second swing upper pawl 2401 is rotatably connected to the second swing pawl shaft 2403, the second swing lower pawl 2402 is rotatably connected to the second swing pawl shaft 2403, the second swing upper pawl 2401 is located above the second swing lower pawl 2402, one end of the second swing upper pawl 2401 is provided with a protruding second upper pawl tooth S201, one end of the second swing lower pawl 2402 is provided with a protruding second lower pawl tooth S202, the second upper pawl tooth S201 is connected to the second lower pawl tooth

[0041] The inner side of S202 is a gentle slope, and the other end of the second upper swing pawl 2401 is provided with a second upper swing connecting hole S203, and the other end of the second lower swing pawl 2402 is provided with a second lower swing connecting hole S204.

[0042] The ratchet disc assembly 23 includes a second upper ratchet disc 2301 and a second lower ratchet disc 2302. The second upper ratchet disc 2301 is provided with a second upper radial protrusion assembly X201. The second upper ratchet disc 2301 is provided with a second upper sink groove X202. The second lower ratchet disc 2302 is provided with a second lower radial protrusion assembly X203. The second lower ratchet disc 2302 is provided with a second lower sink groove X204. The second upper sink groove X202 is provided with a second transverse upper through-active groove X205. The second lower sink groove X204 is provided with a second transverse lower through-active groove X206. The second upper sink groove X202 and the second lower sink groove X204 are provided with coaxial second pawl assembly mounting holes X207.

[0043] The second upper groove X202 is relatively connected to the second lower groove X204, and the second upper ratchet plate 2301 is coaxial with the second lower ratchet plate 2302 and fixedly connected. The pawl assembly 24 is fixed in the second pawl assembly mounting hole X207, and is located between the second upper groove X202 and the first lower groove X204, and can drive the first output ratchet 6 to rotate through the first transmission tooth D001. The first output ratchet 6 is located in the second upper groove X202 and the second lower groove X204, and is rotatably connected to the second upper ratchet plate 2301 and the second lower ratchet plate 2302.

[0044] The right drive assembly 21 includes a second right drive cylinder 2101, a second right drive cylinder mounting plate 2102, a second right connecting block 2103, and a second right drive shaft 2104. The second right drive cylinder mounting plate 2102 is rotatably connected to the frame 5. The second right drive shaft 2104 is inserted into the second transversely penetrating movable groove X205 and the second upper swing connecting hole S203, and is fixedly connected to the second right connecting block 2103. The second right drive cylinder 2101 is fixedly connected to the second right drive cylinder mounting plate 2102, and the second right connecting block 2103 is fixed to the output end of the second right drive cylinder 2101.

[0045] The left drive assembly 22 includes a second left drive cylinder 2201, a second left drive cylinder mounting plate 2202, a second left connecting block 2203, and a second left drive shaft 2204. The second left drive cylinder mounting plate 2202 is rotatably connected to the frame 5. The second left drive cylinder 2201 is fixedly connected to the second left drive cylinder mounting plate 2202. The second left connecting block 2203 is fixed to the output end of the second left drive cylinder 2201. The second left drive shaft 2204 is inserted into the second horizontal lower through-active groove X206 and the second lower swing connecting hole S204, and is fixedly connected to the second left connecting block 2203.

[0046] Its usage or working principle is:

[0047] When the output ratchet is to output clockwise motion, the second left drive cylinder inputs low-pressure gas or no gas. At this time, the output end of the second left drive cylinder outputs a small thrust or is in a free state. Then the second right drive cylinder inputs high-pressure gas, and the output end of the second right drive cylinder moves. Since the output end of the second left drive cylinder outputs a small thrust or is in a free state, the second right drive cylinder will first push the second swing upper ratchet to swing clockwise. At this time, the second upper ratchet teeth contact the first transmission teeth and push the first transmission teeth to move clockwise. Then the second left drive cylinder can input high-pressure pneumatic pressure to make the first left drive cylinder The output end of the cylinder retracts, and the second right driving cylinder continues to output movement, then the second upper ratchet tooth continues to push the first transmission tooth to contact and rotate clockwise. When the second right driving cylinder reaches the limit stroke, the output end of the second left driving cylinder outputs a small thrust or is in a free state, so that the first left driving cylinder retracts. At this time, the first right cylinder outputs a high-pressure cylinder and performs a retraction movement. At this time, the second upper ratchet tooth and the second lower ratchet tooth are both away from the first transmission tooth. At this time, the first transmission tooth has no power input. Repeating the above actions can achieve continuous clockwise motion output. If counterclockwise motion is required, the above actions can be performed in reverse.

[0048] The beneficial effect of this embodiment is that the left drive assembly and the right drive assembly are rotatably connected to the second upper swing pawl and the second lower swing pawl through the second upper swing connecting hole and the second lower swing connecting hole respectively. By controlling the driving sequence of the left drive assembly and the right drive assembly, the technical solution of the swinging movement and direction of the second upper swing pawl and the second lower swing pawl relative to the ratchet disk assembly can be realized, and continuous rotation movement with controllable direction can be realized at low cost, which greatly reduces the cost, has a small size, a simple structure and a large output torque.

[0049] According to the second aspect of the utility model, a machine tool is also provided, comprising a machine body and a bidirectional controllable pneumatic rotating mechanism installed on the machine body, wherein the bidirectional controllable pneumatic rotating mechanism is any one of the above-mentioned bidirectional controllable pneumatic rotating mechanisms.

[0050] Optionally, the cylinder includes but is not limited to a cylinder, a hydraulic cylinder, a gas-liquid booster cylinder, and other mechanisms or elements that output linear motion.

[0051] Working principle: A movable pawl and at least one set of driving components are rotatably connected to the pawl component. By controlling the driving sequence, the swinging motion and direction of the swinging pawl can be controlled, and then the rotation and direction of the output ratchet can be controlled and driven. Repeating the output in a certain direction can achieve a technical solution with controllable continuous rotation motion at low cost, which greatly reduces the cost, has a small size, simple structure, long life, and is safe and environmentally friendly.

[0052] The above embodiments and drawings also propose feasible technologies for solving the technical problem of realizing continuous and direction-controllable rotational motion of a cylinder at low cost. This technology can also be extended to other technical fields, such as wrench tools, clamps, automation equipment, robots, etc. The above embodiments and drawings do not limit the product form and style of the utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the utility model.

Claims

1. A bidirectional controllable pneumatic rotating mechanism, characterized in that: include: The right drive assembly, the left drive assembly, the ratchet disc assembly, the pawl assembly, the frame and the output ratchet, the ratchet disc assembly and the left drive assembly and the right drive assembly are all rotatably connected to the frame, the output ratchet is rotatably connected to the ratchet disc, a first transmission tooth is arranged on the outer side of the output ratchet, the pawl assembly is swingably connected to the ratchet disc assembly, the pawl assembly is provided with a swing pawl, at least one group of drive assemblies among the right drive assembly and the left drive assembly is rotatably connected to the pawl assembly, when one group of drive assemblies is rotatably connected to the pawl assembly, the other group of drive assemblies is rotatably connected to the ratchet disc, at this time the swing pawl is a bidirectional pawl, when both groups of drive assemblies are connected to the pawl assembly, at this time the swing pawl is two independent unidirectional pawls installed in opposite directions, and by controlling the driving sequence of the left drive assembly and the right drive assembly, the swinging motion and direction of the pawl assembly relative to the ratchet disc assembly can be controlled, thereby controlling and driving the rotation and rotation direction of the output ratchet.

2. The bidirectional controllable pneumatic rotating mechanism according to claim 1, characterized in that: The pawl assembly includes a first swinging pawl and a first pawl shaft, the first swinging pawl is rotatably connected to the first pawl shaft, the first swinging pawl is provided with a first left pawl tooth, a first right pawl tooth and a first swing connecting hole, the inner sides of the first left pawl tooth and the first right pawl tooth are gently inclined surfaces, the first pawl shaft is provided between the first left pawl tooth, the first right pawl tooth and the first swing connecting hole, close to the first left pawl tooth and the first right pawl tooth, the first pawl shaft is fixedly connected to the ratchet disk assembly.

3. The bidirectional controllable pneumatic rotating mechanism according to claim 2, characterized in that: The ratchet disc assembly comprises a first upper ratchet disc and a first lower ratchet disc, the first upper ratchet disc is provided with a first upper radial protrusion assembly, the first upper ratchet disc is provided with a first upper sunken groove inside, the first lower ratchet disc is provided with a first lower radial protrusion assembly, the first lower ratchet disc is provided with a first sunken groove inside, a first transversely penetrating movable groove is provided in the first upper sunken groove, a coaxial first pawl assembly mounting hole is provided in the first upper sunken groove and the first sunken groove, and the first sunken groove is also provided with a first left drive assembly mounting hole; The first upper groove is relatively connected to the first lower groove, and the first upper ratchet plate is coaxial and fixedly connected to the first lower ratchet plate. The pawl assembly is fixed in the first pawl assembly mounting hole and is located in the first upper groove and the first lower groove, and can drive the output ratchet to rotate through the first transmission tooth. The output ratchet is located in the first upper groove and the first lower groove, and is rotatably connected to the first upper ratchet plate and the first lower ratchet plate.

4. The bidirectional controllable pneumatic rotating mechanism according to claim 3, characterized in that: The right drive assembly includes a first right drive cylinder, a first right drive cylinder mounting plate, a first right connecting block, and a first right drive shaft. The first right drive cylinder mounting plate is rotatably connected to the frame. The first right drive shaft is inserted into the first transverse movable groove and the first swing connecting hole, and is fixedly connected to the first right connecting block. The first right drive cylinder is fixedly connected to the first right drive cylinder mounting plate, and the first right connecting block is fixed to the output end of the first right drive cylinder.

5. The bidirectional controllable pneumatic rotating mechanism according to claim 3, characterized in that: The left drive assembly includes a first left drive cylinder, a first left drive cylinder mounting plate, a first left connecting block, and a first left drive shaft. The first left drive cylinder mounting plate is rotatably connected to the frame, the first left drive cylinder is fixedly connected to the first left drive cylinder mounting plate, the first left connecting block is fixed to the output end of the first left drive cylinder, the first left connecting block is fixed to the first left drive shaft, and the first left drive shaft is rotatably arranged in the mounting hole of the first left drive assembly.

6. The bidirectional controllable pneumatic rotating mechanism according to claim 3, characterized in that: The pawl assembly includes a second swinging upper pawl, a second swinging lower pawl, and a second swinging pawl rotating shaft, the second swinging pawl rotating shaft is fixedly connected to the ratchet disk assembly, the second swinging upper pawl is rotatably connected to the second swinging pawl rotating shaft, the second swinging lower pawl is rotatably connected to the second swinging pawl rotating shaft, the second swinging upper pawl is located above the second swinging lower pawl, one end of the second swinging upper pawl is provided with a protruding second upper pawl tooth, one end of the second swinging lower pawl is provided with a protruding second lower pawl tooth, the inner sides of the second upper pawl tooth and the second lower pawl tooth are gently inclined surfaces, the other end of the second swinging upper pawl is provided with a second upper swing connecting hole, and the other end of the second swinging lower pawl is provided with a second lower swing connecting hole.

7. The bidirectional controllable pneumatic rotating mechanism according to claim 6, characterized in that: The ratchet disc assembly comprises a second upper ratchet disc and a second lower ratchet disc, the second upper ratchet disc is provided with a second upper radial protrusion assembly, the second upper ratchet disc is provided with a second upper sunken groove inside, the second lower ratchet disc is provided with a second lower radial protrusion assembly, the second lower ratchet disc is provided with a second lower sunken groove inside, the second upper sunken groove is provided with a second transverse upper through-going active groove, the second lower sunken groove is provided with a second transverse lower through-going active groove, and the second upper sunken groove and the second sunken groove are provided with a coaxial second pawl assembly mounting hole; The second upper groove is relatively connected to the second lower groove, and the second upper ratchet plate is coaxial and fixedly connected to the second lower ratchet plate. The pawl assembly is fixed in the second pawl assembly mounting hole and is located between the second upper groove and the first lower groove, and can drive the output ratchet to rotate through the first transmission tooth. The output ratchet is located in the second upper groove and the second lower groove, and is rotatably connected to the second upper ratchet plate and the second lower ratchet plate.

8. The bidirectional controllable pneumatic rotating mechanism according to claim 7, characterized in that: The right drive assembly includes a second right drive cylinder, a second right drive cylinder mounting plate, a second right connecting block, and a second right drive shaft. The second right drive cylinder mounting plate is rotatably connected to the frame. The second right drive shaft is inserted into the second transversely penetrating movable groove and the second upper swing connecting hole, and is fixedly connected to the second right connecting block. The second right drive cylinder is fixedly connected to the second right drive cylinder mounting plate, and the second right connecting block is fixed to the output end of the second right drive cylinder.

9. The bidirectional controllable pneumatic rotating mechanism according to claim 7, characterized in that: The left drive assembly includes a second left drive cylinder, a second left drive cylinder mounting plate, a second left connecting block, and a second left drive shaft. The second left drive cylinder mounting plate is rotatably connected to the frame, the second left drive cylinder is fixedly connected to the second left drive cylinder mounting plate, the second left connecting block is fixed to the output end of the second left drive cylinder, the second left drive shaft is inserted into the second transverse lower through-active groove and the second lower swing connecting hole, and is fixedly connected to the second left connecting block.

10. A machine tool, characterized in that: It comprises a fuselage body and a bidirectional controllable pneumatic rotating mechanism as claimed in any one of claims 1 to 9.

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