Parallel clamping mechanism

Abstract

The utility model relates to the technical field of clamping devices, and provides a parallel clamping mechanism which comprises a shell, a first piston rod, a second piston rod and a clamping assembly, a first cavity and a second cavity which are isolated are arranged in the shell, the first piston rod penetrates through the shell and is located in the first cavity, and the second piston rod penetrates through the shell and is located in the second cavity. The first piston rod can move in the axial direction when a power source is introduced into the first cavity, the second piston rod penetrates through the shell and is located in the second cavity, the first piston rod is parallel to the second piston rod, and the movement direction of the second piston rod is opposite to that of the first piston rod; the clamping assembly comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are oppositely arranged on the two sides of the shell, the first clamping piece is connected with the first end of the first piston rod, and the second clamping piece is connected with the second end of the second piston rod; the clamping device is simple in structure, can quickly clamp or release objects, can adapt to objects with different sizes, shapes and weights, and improves the applicability and the flexibility of the clamping device.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a parallel clamping mechanism. Background Art

[0002] Modern production is gradually developing towards automation and intelligence. At present, most automated equipment cannot do without mechanical clamping mechanisms. During the processing, it is necessary to consider not only the versatility of the clamping mechanism, but also the precise positioning of the product and the clamping requirements of the flexible opening and closing of the clamping device. However, the commonly used clamping mechanisms at present cannot meet the above requirements. Summary of the Utility Model

[0003] The utility model provides a parallel clamping mechanism to solve the problem of poor flexibility of the clamping mechanism in the prior art.

[0004] The utility model provides a parallel clamping mechanism, including:

[0005] A housing provided with a first chamber and a second chamber isolated from each other;

[0006] A first piston rod passing through the housing and located in the first chamber. When a power source is introduced into the first chamber, the first piston rod can move axially. The first end of the first piston rod is a connection end, and the second end of the first piston rod is a free end;

[0007] A second piston rod passing through the housing and located in the second chamber. The first piston rod and the second piston rod are parallel to each other. When a power source is introduced into the second chamber, the second piston rod can move axially, and the movement direction of the second piston rod is opposite to that of the first piston rod. The first end of the second piston rod is a free end, and the second end of the second piston rod is a connection end;

[0008] A clamping assembly including a first clamping member and a second clamping member. The first clamping member and the second clamping member are oppositely arranged on both sides of the housing. The first clamping member is connected to the first end of the first piston rod, and the second clamping member is connected to the second end of the second piston rod.

[0009] According to the parallel clamping mechanism provided by the utility model, it further includes:

[0010] A first transmission rod movably arranged axially in the housing. The first transmission rod is adjacent to and parallel to the first piston rod. The first end of the first transmission rod is a free end, and the second end is connected to the second clamping member;

[0011] The second transmission rod is axially movably arranged in the housing. The second transmission rod is adjacent to and parallel to the second piston rod. The first end of the second transmission rod is connected to the first clamping member, and the second end is a free end.

[0012] According to the parallel clamping mechanism provided by the present utility model, a synchronous gear is arranged between the first transmission rod and the second transmission rod. A first transmission tooth is arranged on the outer side of the first transmission rod, and a second transmission tooth is arranged on the outer side of the second transmission rod. The synchronous gear is simultaneously meshed with the first transmission tooth and the second transmission tooth for transmission.

[0013] According to the parallel clamping mechanism provided by the present utility model, first covers are respectively arranged at both ends of the first chamber. The first covers are provided with first guiding holes, and the first guiding holes are adapted to the first piston rod.

[0014] According to the parallel clamping mechanism provided by the present utility model, second covers are respectively arranged at both ends of the second chamber. The second covers are provided with second guiding holes, and the second guiding holes are adapted to the second piston rod.

[0015] According to the parallel clamping mechanism provided by the present utility model, a collision-proof pad for contacting the first piston is arranged on the inner side of the first cover, and a collision-proof pad for contacting the second piston is arranged on the inner side of the second cover.

[0016] According to the parallel clamping mechanism provided by the present utility model, a first piston is arranged on the first piston rod. The housing is provided with a first interface and a second interface communicated with the first chamber. The first interface and the second interface are distributed on both sides of the first piston, and a power source can be introduced from either side of the first piston to drive the first piston rod to axially move.

[0017] According to the parallel clamping mechanism provided by the present utility model, a second piston is arranged on the second piston rod. The housing is provided with a third interface and a fourth interface communicated with the second chamber. The third interface and the fourth interface are distributed on both sides of the second piston, and a power source can be introduced from either side of the second piston to drive the second piston rod to axially move.

[0018] According to the parallel clamping mechanism provided by the present utility model, the first chamber at least includes a first sub-accommodating chamber and a second sub-accommodating chamber that are communicated with each other. The first sub-accommodating chamber and the second sub-accommodating chamber are arranged along the axis direction of the first piston rod. The first cover plate is provided at one end of the first sub-accommodating chamber facing the first clamping member, and the first cover plate is provided at one end of the second sub-accommodating chamber facing the second clamping member. The first pistons are provided on the first piston rod located in the first sub-accommodating chamber and the second sub-accommodating chamber, and the first interfaces and the second interfaces are provided on the housing on both sides of each first piston.

[0019] According to the parallel clamping mechanism provided by the present utility model, the second chamber at least includes a third sub-accommodating chamber and a fourth sub-accommodating chamber that are communicated with each other. The third sub-accommodating chamber and the fourth sub-accommodating chamber are arranged along the axis direction of the second piston rod. The second cover plate is provided at one end of the third sub-accommodating chamber facing the first clamping member, and the second cover plate is provided at one end of the fourth sub-accommodating chamber facing the second clamping member. The second pistons are provided on the second piston rod located in the third sub-accommodating chamber and the fourth sub-accommodating chamber, and the third interfaces and the fourth interfaces are provided on the housing on both sides of each second piston.

[0020] A parallel clamping mechanism provided by the present utility model includes: a housing, a first piston rod, a second piston rod, and a clamping assembly. The operation of the entire clamping mechanism only involves introducing or discharging a power source into the two chambers, which is convenient to use. By introducing a power source (such as gas or liquid) into the two chambers respectively, independent control of the first piston rod and the second piston rod is realized, and bidirectional driving is achieved. This bidirectional driving mechanism enables the clamping action to respond quickly and can quickly clamp or release an object; by adjusting the pressure or flow rate of the power source introduced into the chamber, the moving speed and distance of the piston rod can be accurately controlled, and further the clamping force between the first clamping member and the second clamping member can be adjusted, which can adapt to objects of different sizes, shapes, and weights, and improves its applicability and flexibility; in addition, since the two piston rods are located in different chambers respectively, it helps to optimize the spatial layout of the entire clamping mechanism, making the entire mechanism structure compact, and even if one chamber or piston rod fails, it will not directly affect the normal operation of the other chamber or piston rod, thus ensuring the overall stability and reliability of the clamping mechanism. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic three - dimensional structure diagram of a parallel clamping mechanism according to an embodiment of the present utility model.

[0023] Figure 2 It is a schematic diagram of the internal structure of the housing in the state of clamping an object provided by an embodiment of the present utility model.

[0024] Figure 3 It is a schematic diagram of the internal structure of the housing in the state of releasing an object provided by an embodiment of the present utility model.

[0025] Figure 4 It is a schematic diagram of the transmission structure between the transmission rod and the synchronous gear provided by an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 1. Housing; 11. First chamber; 111. First sub - accommodating chamber; 112. Second sub - accommodating chamber; 12. Second chamber; 121. Third sub - accommodating chamber; 122. Fourth sub - accommodating chamber; 13. First cover plate; 14. Second cover plate; 15. Anti - collision pad;

[0028] 2. First piston rod; 21. First piston; 3. Second piston rod; 31. Second piston;

[0029] 4. First clamping member; 5. Second clamping member;

[0030] 6. First transmission rod; 7. Second transmission rod; 8. Synchronous gear;

[0031] 10. First interface; 20. Second interface; 30. Third interface; 40. Fourth interface. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0033] The following will be combined with Figures 1-4 Describe a parallel clamping mechanism of the present utility model.

[0034] This embodiment provides a parallel clamping mechanism, including: a housing 1, a first piston rod 2, a second piston rod 3 and a clamping assembly.

[0035] Among them, a first chamber 11 and a second chamber 12 which are isolated from each other are arranged in the housing 1, and both chambers are cylindrical chambers.

[0036] The first piston rod 2 penetrates through the housing 1 and is located in the first chamber 11. The first end of the first piston rod 2 is the connecting end, and the second end of the first piston rod 2 is the free end. The first piston rod 2 can move axially when a power source is introduced into the first chamber 11. That is to say, when a power source such as a gas or liquid with a certain pressure is introduced into the first chamber 11, the power source can drive the first piston rod 2 to move left and right axially.

[0037] The second piston rod 3 penetrates through the housing 1 and is located in the second chamber 12. The first end of the second piston rod 3 is the free end, and the second end of the second piston rod 3 is the connecting end. The first piston rod 2 and the second piston rod 3 are parallel to each other, and the second piston rod 3 can move axially when a power source is introduced into the second chamber 12, and the movement direction of the second piston rod 3 is opposite to that of the first piston rod 2.

[0038] The clamping assembly includes a first clamping member 4 and a second clamping member 5. The first clamping member 4 and the second clamping member 5 are oppositely arranged on both sides of the housing 1. The first clamping member 4 is connected to the first end of the first piston rod 2, and the second clamping member 5 is connected to the second end of the second piston rod 3. That is to say, the first piston rod 2 is only connected to the first clamping member 4, and the second piston rod 3 is only connected to the second clamping member 5. When a power source is introduced into the first chamber 11 and the second chamber 12, both the first piston rod 2 and the second piston rod 3 perform reverse parallel movements axially, thereby driving the first clamping member 4 and the second clamping member 5 to approach or separate from each other, realizing the opening and closing actions, and completing the clamping and releasing operations of the object.

[0039] The structure of the utility model is simple. The operation of the entire clamping mechanism only involves introducing or discharging a power source into the two chambers, which is convenient to use. By introducing a power source such as a gas or liquid into the two chambers respectively, independent control of the first piston rod 2 and the second piston rod 3 is realized, and bidirectional driving is achieved. This bidirectional driving mechanism enables the clamping action to respond quickly and can quickly clamp or release an object; by adjusting the pressure or flow rate of the power source introduced into the chamber, the moving speed and distance of the piston rod can be accurately controlled, and further the clamping force between the first clamping member 4 and the second clamping member 5 can be adjusted, which can adapt to objects of different sizes, shapes and weights, and improves its applicability and flexibility; in addition, since the two piston rods are respectively located in different chambers, it helps to optimize the spatial layout of the entire clamping mechanism, making the entire mechanism structure compact, and even if one of the chambers or piston rods fails, it will not directly affect the normal operation of the other chamber or piston rod, thus ensuring the overall stability and reliability of the clamping mechanism.

[0040] Further, it further includes: a first transmission rod 6 and a second transmission rod 7; wherein, the first transmission rod 6 is axially movably arranged in the housing 1, the first transmission rod 6 is adjacent to and parallel to the first piston rod 2, the first end of the first transmission rod 6 is a free end, and the second end is connected to the second clamping member 5; the second transmission rod 7 is axially movably arranged in the housing 1, the second transmission rod 7 is adjacent to and parallel to the second piston rod 3, the first end of the second transmission rod 7 is connected to the first clamping member 4, and the second end is a free end, that is, the first clamping member 4 is simultaneously connected to the first piston rod 2 and the second transmission rod 7, and the second clamping member 5 is simultaneously connected to the second piston rod 3 and the first transmission rod 6.

[0041] With such an arrangement, the clamping action is optimized. Since the two transmission rods are arranged parallel to the piston rods, they can be moved synchronously more easily, thereby ensuring the smoothness and consistency of the clamping action.

[0042] In this embodiment, guide holes are provided on both the first clamping member 4 and the second clamping member 5 for adapting to the free ends of the two piston rods and the two transmission rods. When the first piston rod 2 and the second piston rod 3 axially move, the free ends of the two piston rods and the two transmission rods can all axially pass through their respective corresponding guide holes and can move in the guide holes, so that the relative movement of the two clamping members will not be affected due to the excessive length of the piston rods or the transmission rods.

[0043] As Figure 1 shown, the first piston rod 2 and the second piston rod 3 are arranged in parallel below the housing 1, the first transmission rod 6 and the second transmission rod 7 are arranged in parallel above the housing 1, and the connection line between the first end of the first piston rod 2 and the first end of the second transmission rod 7 coincides with a diagonal line on the side of the housing 1, and the connection line between the second end of the second piston rod 3 and the second end of the first transmission rod 6 coincides with a diagonal line on the side of the housing 1, that is, the connection points of the first piston rod 2 and the second transmission rod 7 on the first clamping member 4 are diagonally distributed, and the connection points of the second piston rod 3 and the first transmission rod 6 on the second clamping member 5 are diagonally distributed, which helps to improve the reliability of the connection of the first clamping member 4 and the second clamping member 5 and the smoothness of the movement.

[0044] Referring to Figure 4 , in this embodiment, a synchronous gear 8 is arranged between the first transmission rod 6 and the second transmission rod 7, a first transmission tooth is arranged on the outer side of the first transmission rod 6, a second transmission tooth is arranged on the outer side of the second transmission rod 7, and the synchronous gear 8 is simultaneously meshed with the first transmission tooth and the second transmission tooth for transmission.

[0045] With such a setting, by arranging the synchronous gear 8 to be drivingly connected to both drive rods simultaneously, it is ensured that the first drive rod 6 and the second drive rod 7 can move synchronously. And since the first piston rod 2 is connected to the second drive rod 7 through the first clamping member 4, and the second piston rod 3 is connected to the first drive rod 6 through the second clamping member 5, the first piston rod 2 and the second piston rod 3 also move synchronously. Thus, no matter what reasons cause the speed difference between the two piston rods, such as the pressure difference of the power source, different frictional resistances, etc., the synchronous gear 8 will force the two drive rods to move at the same speed through its meshing drive mechanism, which ensures the consistency and accuracy of the clamping action, and is especially suitable for application scenarios that require high-precision clamping, such as precision machining and automated assembly.

[0046] Moreover, by introducing the synchronous gear 8, the vibration and impact generated during the clamping process can be better dispersed and absorbed, thereby reducing the wear and failure risk of related components and enhancing the stability of the entire clamping mechanism.

[0047] In some embodiments, a connecting shaft is also provided, and the synchronous gear 8 is rotatably mounted on the connecting shaft through bearings.

[0048] Optionally, the design of the synchronous gear 8 can be adjusted according to actual requirements. For example, gears with different module numbers and tooth numbers can be selected to change the transmission ratio, so as to adapt to the requirements of different speeds, forces or clamping ranges.

[0049] In this embodiment, first cover plates 13 are respectively arranged at both ends of the first chamber 11. The first cover plates 13 can be detachably connected to the housing 1 through snap rings to achieve the sealing of the first chamber 11 and are convenient for disassembly, which is beneficial to the maintenance of the interior of the first chamber 11 and the first piston rod 2; second cover plates 14 are respectively arranged at both ends of the second chamber 12. The second cover plates 14 are also detachably connected to the housing 1 through snap rings to achieve the sealing of the second chamber 12 and are convenient for disassembly, which is beneficial to the maintenance of the interior of the second chamber 12 and the second piston rod 3.

[0050] Optionally, sealing rings are also arranged at the joints of the first cover plates 13 and the second cover plates 14 with the housing 1 to improve the sealing performance of the chambers.

[0051] The first cover plate 13 is provided with a first guiding hole, which is adapted to the first piston rod 2, and the second cover plate 14 is provided with a second guiding hole, which is adapted to the second piston rod 3, so as to assemble the first piston rod 2 and the second piston rod 3 with the housing 1.

[0052] In some embodiments, anti-collision pads 15 for contacting the first piston 21 are arranged on the inner side of the first cover plate 13, and anti-collision pads 15 for contacting the second piston 31 are arranged on the inner side of the second cover plate 14.

[0053] With such a setting, the anti-collision pad 15 can serve as an isolation layer and a buffer layer, reducing or eliminating the direct impact between the piston and the cover plate when the piston moves rapidly or encounters resistance, reducing the direct friction and wear between components, effectively protecting these key components from damage, and extending their service life; and it can reduce the noise and vibration generated when the piston moves rapidly, reduce the noise level and vibration amplitude of the entire clamping mechanism, and improve the clamping accuracy. Due to the presence of the anti-collision pad 15, when the piston contacts the cover plate, it will not suddenly stop or bounce back, but can smoothly transition to a stationary state, which helps to reduce errors and deviations during the clamping process and improve the clamping accuracy and reliability.

[0054] In this embodiment, a first piston 21 is provided on the first piston rod 2, and the housing 1 is provided with a first interface 10 and a second interface 20 communicating with the first chamber 11. The first interface 10 and the second interface 20 are distributed on both sides of the first piston 21, and a power source can be introduced from either side of the first piston 21 to drive the first piston rod 2 to move axially; a second piston 31 is provided on the second piston rod 3, and the housing 1 is provided with a third interface 30 and a fourth interface 40 communicating with the second chamber 12. The third interface 30 and the fourth interface 40 are distributed on both sides of the second piston 31, and a power source can be introduced from either side of the second piston 31 to drive the second piston rod 3 to move axially.

[0055] That is to say, by selecting to introduce a power source from either the first interface 10 or the second interface 20 to one side of the first piston 21, the moving direction of the first piston rod 2 can be changed; similarly, by selecting to introduce a power source from either the third interface 30 or the fourth interface 40 to one side of the second piston 31, the moving direction of the second piston rod 3 can be changed, so that the synchronous reverse movement of the first piston rod 2 and the second piston rod 3 can be realized, driving the two clamping members to approach or move away from each other, and completing the clamping or releasing action of the object.

[0056] Furthermore, the first chamber 11 at least includes a first sub-accommodating chamber 111 and a second sub-accommodating chamber 112 that are connected and communicate with each other. The first sub-accommodating chamber 111 and the second sub-accommodating chamber 112 are arranged along the axis direction of the first piston rod 2. A first cover plate 13 is provided at one end of the first sub-accommodating chamber 111 facing the first clamping member 4, and a first cover plate 13 is provided at one end of the second sub-accommodating chamber 112 facing the second clamping member 5. First pistons 21 are provided on the first piston rod 2 located in the first sub-accommodating chamber 111 and the second sub-accommodating chamber 112, and a first interface 10 and a second interface 20 are provided on the housing 1 on both sides of each first piston 21.

[0057] With such a setting, by dividing the first chamber 11 into at least two sub-accommodating chambers and placing a first piston 21 on the first piston rod 2 located in each sub-accommodating chamber, the movement of the two first pistons 21 can be independently controlled. This design can adjust the pressure, flow rate or other parameters of the power source in the two sub-accommodating chambers according to specific requirements, thereby enhancing functional flexibility; and since the two first pistons 21 work separately, they can cooperate to provide a more stable clamping force; by arranging two interfaces, the first interface 10 and the second interface 20, on both sides of each first piston 21, the power distribution can be optimized, and different power sources can be flexibly connected, which helps to optimize the power distribution so that each piston can obtain the most suitable driving force, thereby improving the overall efficiency and performance.

[0058] Moreover, the modular design enables each sub-accommodating chamber and the first piston 21 therein to be independently maintained. When a problem occurs in one of the sub-accommodating chambers or the first piston 21, it can be repaired or replaced individually without affecting the operation of the entire system.

[0059] As Figure 2 shown in Figure 3 FIG., the second chamber 12 at least includes a third sub-accommodating chamber 121 and a fourth sub-accommodating chamber 122 that are connected and communicate with each other. The third sub-accommodating chamber 121 and the fourth sub-accommodating chamber 122 are arranged along the axis direction of the second piston rod 3. A second cover plate 14 is provided at one end of the third sub-accommodating chamber 121 facing the first clamping member 4, and a second cover plate 14 is provided at one end of the fourth sub-accommodating chamber 122 facing the second clamping member 5. Second pistons 31 are provided on the second piston rod 3 located in the third sub-accommodating chamber 121 and the fourth sub-accommodating chamber 122. Third interfaces 30 and fourth interfaces 40 are provided on the housing 1 on both sides of each second piston 31. With such a setting, the beneficial effect is similar to that of dividing the first chamber 11 into at least two sub-accommodating chambers and placing a first piston 21 on the first piston rod 2 located in each sub-accommodating chamber, which will not be elaborated here.

[0060] A parallel clamping mechanism provided in this embodiment has four chambers arranged in the housing 1. The first piston rod 2 penetrates through the housing 1 and sequentially passes through the first sub-accommodating chamber 111 and the second sub-accommodating chamber 112. The first end of the first piston rod 2 is fixedly connected to the first clamping member 4 by bolts. The second piston rod 3 penetrates through the housing 1 and sequentially passes through the third sub-accommodating chamber 121 and the fourth sub-accommodating chamber 122. The second end of the second piston rod 3 is fixedly connected to the second clamping member 5 by bolts.

[0061] During operation, as Figure 2As shown in the figure, by connecting the first interface 10 on the left side of the first piston 21 in the first sub-accommodating cavity 111 and the second sub-accommodating cavity 112 to the air inlet source, connecting the second interface 20 on the right side of the two first pistons 21 to the output air path, and at the same time connecting the fourth interface 40 on the right side of the second piston 31 in the third sub-accommodating cavity 121 and the fourth sub-accommodating cavity 122 to the air inlet source, and connecting the third interface 30 on the left side of the two second pistons 31 to the output air path, the compressed gas is enabled to push the first piston rod 2 and the second piston rod 3 to move in a reverse parallel manner, driving the first clamping member 4 and the second clamping member 5 to approach each other to complete the clamping action.

[0062] As Figure 3 shown in the figure, when the part to be clamped moves to the required position, reverse ventilation is carried out, that is, connecting the second interface 20 on the right side of the two first pistons 21 in the first sub-accommodating cavity 111 and the second sub-accommodating cavity 112 to the air inlet source, connecting the first interface 10 on the left side of the two first pistons 21 to the output air path, and at the same time connecting the third interface 30 on the left side of the second piston 31 in the third sub-accommodating cavity 121 and the fourth sub-accommodating cavity 122 to the air inlet source, and connecting the fourth interface 40 on the right side of the two second pistons 31 to the output air path, so that the compressed gas pushes the first piston rod 2 and the second piston rod 3 to move in a reverse parallel manner, driving the first clamping member 4 and the second clamping member 5 to move away from each other to perform the release action.

[0063] In this embodiment, an installation structure is further provided on one side of the housing 1. The installation structure can be a threaded interface or a positioning hole, which is convenient for installation on a moving structure, such as a guide rail screw and a cylinder, etc., and can realize moving this parallel clamping mechanism to the position of the part to be clamped.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A parallel clamping mechanism, characterized in that, Comprising: A housing (1) provided with a first chamber (11) and a second chamber (12) isolated from each other; A first piston rod (2) penetrating the housing (1) and located in the first chamber (11). The first piston rod (2) can move axially when a power source is introduced into the first chamber (11). The first end of the first piston rod (2) is a connection end, and the second end of the first piston rod (2) is a free end; A second piston rod (3) penetrating the housing (1) and located in the second chamber (12). The first piston rod (2) and the second piston rod (3) are parallel to each other, and the second piston rod (3) can move axially when a power source is introduced into the second chamber (12), and the movement direction of the second piston rod (3) is opposite to that of the first piston rod (2). The first end of the second piston rod (3) is a free end, and the second end of the second piston rod (3) is a connection end; A clamping assembly including a first clamping member (4) and a second clamping member (5). The first clamping member (4) and the second clamping member (5) are oppositely arranged on both sides of the housing (1). The first clamping member (4) is connected to the first end of the first piston rod (2), and the second clamping member (5) is connected to the second end of the second piston rod (3).

2. The parallel clamping mechanism according to claim 1, wherein Further comprising: A first transmission rod (6) axially movably arranged in the housing (1). The first transmission rod (6) is adjacent and parallel to the first piston rod (2). The first end of the first transmission rod (6) is a free end, and the second end is connected to the second clamping member (5); A second transmission rod (7) axially movably arranged in the housing (1). The second transmission rod (7) is adjacent and parallel to the second piston rod (3). The first end of the second transmission rod (7) is connected to the first clamping member (4), and the second end is a free end.

3. The parallel clamping mechanism according to claim 2, characterized in that, A synchronous gear (8) is arranged between the first transmission rod (6) and the second transmission rod (7). A first transmission tooth is arranged on the outer side of the first transmission rod (6), and a second transmission tooth is arranged on the outer side of the second transmission rod (7). The synchronous gear (8) is simultaneously meshed with the first transmission tooth and the second transmission tooth for transmission.

4. The parallel clamping mechanism according to claim 1, characterized in that, First covers (13) are respectively arranged at both ends of the first chamber (11). The first covers (13) are provided with first guiding holes adapted to the first piston rod (2).

5. The parallel clamping mechanism according to claim 4, wherein, Second covers (14) are respectively arranged at both ends of the second chamber (12). The second covers (14) are provided with second guiding holes adapted to the second piston rod (3).

6. The parallel clamping mechanism according to claim 5, wherein, Anti-collision pads (15) are arranged on the inner sides of the first covers (13) and the inner sides of the second covers (14).

7. The parallel clamping mechanism according to claim 4, characterized in that, A first piston (21) is provided on the first piston rod (2). The housing (1) is provided with a first interface (10) and a second interface (20) that communicate with the first chamber (11). The first interface (10) and the second interface (20) are distributed on both sides of the first piston (21), and a power source can be introduced from either side of the first piston (21) to drive the first piston rod (2) to move axially.

8. The parallel clamping mechanism according to claim 5, characterized in that, A second piston (31) is provided on the second piston rod (3). The housing (1) is provided with a third interface (30) and a fourth interface (40) that communicate with the second chamber (12). The third interface (30) and the fourth interface (40) are distributed on both sides of the second piston (31), and a power source can be introduced from either side of the second piston (31) to drive the second piston rod (3) to move axially.

9. The parallel clamping mechanism according to claim 7, wherein, The first chamber (11) at least includes a first sub-accommodating chamber (111) and a second sub-accommodating chamber (112) that communicate with each other. The first sub-accommodating chamber (111) and the second sub-accommodating chamber (112) are arranged along the axis direction of the first piston rod (2). The first cover plate (13) is provided at one end of the first sub-accommodating chamber (111) facing the first clamping member (4), and the first cover plate (13) is provided at one end of the second sub-accommodating chamber (112) facing the second clamping member (5). The first piston (21) is provided on the first piston rod (2) located in the first sub-accommodating chamber (111) and the second sub-accommodating chamber (112). The first interface (10) and the second interface (20) are provided on the housing (1) on both sides of each first piston (21).

10. The parallel clamping mechanism according to claim 8, wherein, The second chamber (12) at least includes a third sub-accommodating chamber (121) and a fourth sub-accommodating chamber (122) that communicate with each other. The third sub-accommodating chamber (121) and the fourth sub-accommodating chamber (122) are arranged along the axis direction of the second piston rod (3). The second cover plate (14) is provided at one end of the third sub-accommodating chamber (121) facing the first clamping member (4), and the second cover plate (14) is provided at one end of the fourth sub-accommodating chamber (122) facing the second clamping member (5). The second piston (31) is provided on the second piston rod (3) located in the third sub-accommodating chamber (121) and the fourth sub-accommodating chamber (122). The third interface (30) and the fourth interface (40) are provided on the housing (1) on both sides of each second piston (31).

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