A single-power multi-point clamping mechanism

Abstract

This utility model discloses a single-power multi-point clamping mechanism, which includes a main base, a bearing plate, a locking block, a support platform, a rotating shaft, a transmission gear, a connecting rod, a clamping assembly, and a linkage mechanism. Rotating the rotating shaft drives the transmission gear to rotate, which in turn moves the connecting rod and the first connecting arm, achieving synchronous movement of the clamping plate and the locking pin, thus completing the assembly and disassembly of the locking block from the main base. The hydraulic system in the linkage mechanism works in concert to enhance stability. This application utilizes a single operation to achieve multi-point synchronous control, simplifying the traditional complex power distribution, improving stability and production efficiency, and possessing high practical value.

Description

Technical Field

[0001] This utility model relates to the field of machining and assembly technology, and in particular to a single-power multi-point clamping mechanism. Background Technology

[0002] Machining is a crucial link in modern manufacturing. It involves using various mechanical equipment to cut, shape, or assemble workpieces to meet specific size, shape, and performance requirements. Different processing needs necessitate diverse technological processes and methods. Machining is a man-made technology system primarily used in industrial production to achieve precise material handling. While the design of machining equipment typically focuses on improving efficiency and precision, and its structure is continuously optimized with technological advancements, in actual operation, when multiple points need to be simultaneously pressed, complex power distribution issues often arise, leading to certain limitations on production efficiency.

[0003] Chinese patent CN219948515U discloses an easy-to-install ship collision avoidance device, including a mounting base. The mounting base has a working groove and an opening inside. A motor is installed inside the working groove, and a first gear is connected to the power drive end of the motor. A double-acting screw is connected inside the working groove, and a second gear is installed at the center of the outer side of the double-acting screw. Two symmetrical movable seats are connected to the outside of the double-acting screw. A connecting seat is connected inside the opening. A connecting plate is installed on the upper surface of the connecting seat, and a base is installed on the upper surface of the connecting plate. Two symmetrical buffer components are installed on the top of the base. A frame is installed on the top of the two buffer components, and several sets of collision avoidance rollers are connected to the top of the frame. Workers can quickly install and disassemble the collision avoidance device, improving work efficiency. The first and second springs ensure effective buffering, and the entire buffering process is stable.

[0004] However, in the process of conceiving and implementing the above application, the inventors discovered that the disclosed solution, in actual use, requires a separate power source to drive the bidirectional screw driven by a motor to insert the locking pin into the slot on the side wall of the connector for easy disassembly and assembly, which is relatively expensive. Utility Model Content

[0005] The purpose of this utility model is to provide a single-power multi-point clamping mechanism, which solves the problems mentioned in the background art.

[0006] This utility model is implemented as follows: a single-power multi-point clamping mechanism includes a main base, a bearing plate on the top of the main base, a locking block and a support platform on the bottom and top of the bearing plate, respectively, and the locking block is assembled in a locking groove opened in the top of the main base. The locking block has a cavity inside, and a clamping assembly is provided above the support platform. The single-power multi-point clamping mechanism also includes:

[0007] A rotating shaft has its upper part rotatably connected to and extending out of the clamping assembly. Symmetrical drive teeth are provided on its lower sidewall, meshing with a transmission gear located within the cavity. Two sets of connecting rods are symmetrically arranged on the outer wall of the transmission gear. One end of each connecting rod is hinged to a first connecting arm, and one end of the first connecting arm is hinged to a clamping plate. Two sets of locking pins are symmetrically arranged on the outer wall of the clamping plate. A return spring is sleeved on each locking pin, and the return spring is located between the clamping plate and the inner wall of the cavity.

[0008] The inner wall of the locking groove is provided with a fixing hole that allows the locking pin to be inserted.

[0009] Optionally, the outer wall of the clamping assembly is provided with several guide strips, and two sets of guide posts are symmetrically provided on the top of the support platform. Each set of guide posts is provided with a support post at its top, and the upper end of the support post is fixedly connected to the top of the clamping assembly. The lower end of the support post is located inside the guide post and is connected to a limit block. A buffer spring is provided at the bottom of the limit block.

[0010] Optionally, it also includes a linkage mechanism disposed between the main base and the clamping assembly, the linkage mechanism comprising:

[0011] Two sets of slide rails are symmetrically arranged on the top of the support platform. Each set of slide rails has a slider slidably connected inside. The upper end of the slider is movably connected to the inner top of the clamping assembly through a second connecting arm. A push-pull rod is connected to one side of the inner wall of the slider. A first hydraulic chamber is provided on one side of the push-pull rod. A first piston is slidably connected inside the first hydraulic chamber. One end of the push-pull rod extends into the hydraulic chamber and is connected to the first piston. One end of the first hydraulic chamber is connected to a first hydraulic pipe.

[0012] Optionally, the lower end of the first hydraulic pipe passes through the bearing plate and the locking block in sequence and is connected to a second hydraulic pipe. One end of the second hydraulic pipe is connected to a second hydraulic chamber, which is located inside the main base. A compression spring is provided inside the second hydraulic chamber. A second piston is connected to the top of the compression spring. A support rod is connected to the upper end face of the second piston. The upper end of the support rod passes through the bearing plate and is inserted into the bottom of the pressing assembly.

[0013] Optionally, the upper end face of the second hydraulic pipe is attached to the lower end face of the first hydraulic pipe, and two sets of sealing rings are provided inside the attachment point, with sealing gaskets filling the interior of the two sets of sealing rings.

[0014] Optionally, the transmission gear and the rotating shaft are rotatably connected to the locking block and the clamping assembly via bearings, and the upper end of the rotating shaft is provided with an operating handle.

[0015] Optionally, the slide rail has a T-shaped cross-section, and the two ends of the second connecting arm are respectively hinged to the clamping assembly and the slider.

[0016] Optionally, a sealing ring is provided between the first piston and the first hydraulic chamber, and between the second piston and the second hydraulic chamber.

[0017] Optionally, the sealing ring has a U-shaped cross-section, and the two sets of sealing rings are fixedly connected to the inner walls of the first hydraulic pipe and the second hydraulic pipe, respectively.

[0018] Optionally, the guide strip has a rectangular cross-section.

[0019] The working principle of this invention is as follows: By rotating the shaft, the drive gear rotates, causing the connecting rod to pull the first connecting arm, which in turn moves the pressure plate, pulling the locking pin out of the fixing hole, thus separating the locking block and the main base. During installation, after repeating the above steps, the locking block is inserted into the locking groove, and the applied force is released. This allows the locking pin to reset under the action of the return spring, inserting it into the fixing hole, thus completing the installation. This device does not require a separate power source; a single operation can achieve synchronous clamping at multiple points, reducing manufacturing costs and improving production efficiency.

[0020] The technical advantages of this utility model are mainly reflected in the following aspects: First, through the linkage design of the rotating shaft, transmission gear, and connecting rod, synchronous control of multiple points by a single operation is achieved, simplifying the complex problems of traditional multi-power distribution. Second, the matching design of the locking pin and the fixing hole, combined with the elastic effect of the return spring, ensures the stability and reliability of the device. Third, the hydraulic system in the linkage mechanism, through the coordinated work of the first hydraulic chamber, the second hydraulic chamber, and the hydraulic pipe, further enhances the smoothness of the pressing process and avoids processing errors caused by uneven pressure. Finally, the overall structure is compact, the connection relationship between components is clear, facilitating actual production and maintenance, and possessing high practical value. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the installation of the locking block in this utility model.

[0024] The reference numerals in the attached drawings are as follows: 1. Main base; 2. Bearing plate; 3. Locking block; 4. Pressing assembly; 5. Rotating shaft; 6. Transmission gear; 7. Connecting rod; 8. First connecting arm; 9. Pressing plate; 10. Locking pin; 11. Return spring; 12. Fixing hole; 13. First hydraulic chamber; 14. Second hydraulic chamber; 15. Hydraulic pipe; 16. Sealing ring. Detailed Implementation

[0025] This utility model provides a single-power multi-point clamping mechanism, which achieves synchronous control of multiple points with a single operation through specific structural design. The following is in conjunction with the appendix... Figure 1 To be continued Figure 3 The specific embodiments of this utility model are described in detail with reference to the markings in the accompanying drawings. Figure 1 The diagram shows the overall structure, illustrating the assembly relationship of the main base 1, bearing plate 2, locking block 3, clamping assembly 4, and rotating shaft 5, and also indicates the positions of transmission gear 6 and connecting rod 7. Figure 2 This is a partial sectional view, which highlights the cooperation relationship between the locking pin 10, the return spring 11 and the fixing hole 12, and also shows the connection method between the pressure plate 9 and the first connecting arm 8. Figure 3 This is a schematic diagram of the hydraulic system, showing the arrangement of the first hydraulic chamber 13, the second hydraulic chamber 14, the hydraulic pipe 15, and its internal sealing ring 16.

[0026] The main base 1 serves as the foundation of the entire device, with a support plate 2 fixed to its top. The top of the support plate 2 has a locking groove, into which a locking block 3 is installed and forms a tight fit. The locking block 3 has an internal cavity to accommodate components such as the transmission gear 6, connecting rod 7, first connecting arm 8, pressure plate 9, and locking pin 10. A fixing hole 12 is provided on the inner wall of the locking groove, which engages with the locking pin 10 to achieve a fixed connection between the locking block 3 and the main base 1. A support platform is also provided on the top of the support plate 2, located above the locking block 3, to support the pressing assembly 4. The pressing assembly 4 is positioned on top of the support platform, and its outer wall has several guide strips with rectangular cross-sections to enhance the stability of the pressing assembly 4 and restrict its direction of movement.

[0027] A rotating shaft 5 passes through and is rotatably connected to the clamping assembly 4. The lower part of the rotating shaft 5 extends into the cavity of the locking block 3. Symmetrical drive teeth are provided on the lower sidewall of the rotating shaft 5, meshing with a transmission gear 6. The transmission gear 6 is located within the cavity of the locking block 3 and is rotatably connected to the locking block 3 via a bearing. Two sets of connecting rods 7 are symmetrically arranged on the outer wall of the transmission gear 6. One end of each connecting rod 7 is hinged to the outer wall of the transmission gear 6, and the other end is hinged to a first connecting arm 8. One end of the first connecting arm 8 is hinged to the connecting rod 7, and the other end is hinged to the clamping plate 9. Two sets of locking pins 10 are symmetrically arranged on the outer wall of the clamping plate 9, passing through the clamping plate 9 and extending into the cavity of the locking block 3. A return spring 11 is fitted onto the locking pin 10, with one end abutting against the inner wall of the clamping plate 9 and the other end abutting against the inner wall of the cavity of the locking block 3. When the locking pin 10 is inserted into the fixing hole 12, the return spring 11 is in a compressed state, thereby providing an outward elastic force to the locking pin 10.

[0028] Two sets of guide pillars are symmetrically arranged on the top of the support platform. Each set of guide pillars has a support pillar at its top. The upper end of the support pillar is fixedly connected to the inner top of the pressing assembly 4, and the lower end of the support pillar is located inside the guide pillar and connected to a limit block. A buffer spring is provided at the bottom of the limit block. The buffer spring is used to provide a buffering effect when the pressing assembly 4 is subjected to external pressure, so as to avoid damage to the device due to excessive pressure. In addition, a linkage mechanism is provided between the main base 1 and the pressing assembly 4. The linkage mechanism includes two sets of slide rails symmetrically opened inside the top of the support platform. The cross-section of each slide rail is T-shaped, and a slider is slidably connected inside the slide rail. The upper end of the slider is movably connected to the inner top of the pressing assembly 4 through a second connecting arm. The two ends of the second connecting arm are respectively hinged to the pressing assembly 4 and the slider. A push-pull rod is connected to one side of the inner wall of the slider. A first hydraulic chamber 13 is provided on one side of the push-pull rod. A first piston is slidably connected inside the first hydraulic chamber 13. One end of the push-pull rod extends into the first hydraulic chamber 13 and is connected to the first piston. One end of the first hydraulic chamber 13 is connected to a first hydraulic pipe 15. The lower end of the first hydraulic pipe 15 passes through the support plate 2 and the locking block 3 in sequence and connects to a second hydraulic pipe 15. One end of the second hydraulic pipe 15 is connected to a second hydraulic chamber 14, which is located inside the main base 1. A compression spring is installed inside the second hydraulic chamber 14. A second piston is connected to the top of the compression spring. A support rod is connected to the upper end face of the second piston. The upper end of the support rod passes through the support plate 2 and is inserted into the bottom of the pressing assembly 4. The upper end face of the second hydraulic pipe 15 is in contact with the lower end face of the first hydraulic pipe 15. Two sets of sealing rings 16 are provided inside the contact area, and the interior of the two sets of sealing rings 16 is filled with sealing gaskets. The cross-section of the sealing rings 16 is U-shaped. The two sets of sealing rings 16 are fixedly connected to the inner walls of the first hydraulic pipe 15 and the second hydraulic pipe 15, respectively. Sealing rings are provided between the first piston and the first hydraulic chamber 13, and between the second piston and the second hydraulic chamber 14, to prevent hydraulic oil leakage.

[0029] In actual use, the operator rotates the upper operating handle of the rotating shaft 5, causing the rotating shaft 5 to drive the drive gear to rotate. The drive gear meshes with the transmission gear 6, thereby driving the transmission gear 6 to rotate. The rotation of the transmission gear 6 causes the connecting rod 7 to swing, and the swing of the connecting rod 7 further pulls the first connecting arm 8 to move. The movement of the first connecting arm 8 causes the pressure plate 9 to retract inward. The retraction of the pressure plate 9 causes the locking pin 10 to move out of the fixing hole 12, at which point the fixed connection between the locking block 3 and the main base 1 is released. During installation, the operator inserts the locking block 3 into the locking groove and then releases the applied force. The elastic force of the return spring 11 pushes the locking pin 10 outward, causing the locking pin 10 to re-insert into the fixing hole 12, thereby completing the fixed connection between the locking block 3 and the main base 1. During this process, the hydraulic system in the linkage mechanism works in concert. The first piston in the first hydraulic chamber 13 slides with the movement of the push-pull rod. Hydraulic oil is transmitted to the second hydraulic chamber 14 through the first hydraulic pipe 15 and the second hydraulic pipe 15, pushing the second piston to move upward. The movement of the second piston drives the support rod to move upward, thereby providing additional support force for the clamping assembly 4 and ensuring the smoothness of the clamping process.

[0030] In this embodiment, the connection relationships between the rotating shaft 5, transmission gear 6, connecting rod 7, first connecting arm 8, and pressing plate 9 are clearly defined, and the movement trajectories of each component are clear. Synchronous control of multiple points can be achieved through a single operation, eliminating the need for an additional power source, thereby reducing manufacturing costs and improving production efficiency. Simultaneously, the mating design of the locking pin 10 and the fixing hole 12, combined with the elastic effect of the return spring 11, ensures the stability and reliability of the device. The hydraulic system in the linkage mechanism, through the coordinated work of the first hydraulic chamber 13, the second hydraulic chamber 14, and the hydraulic pipe 15, further enhances the smoothness of the pressing process, avoiding processing errors caused by uneven pressure. The overall structure is compact, and the connection relationships between components are clearly defined, facilitating actual production and maintenance.

[0031] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0032] In machining processes, it is often necessary to perform multi-point synchronous clamping operations on the workpiece. Taking a certain type of metal workpiece as an example, this workpiece has multiple fixed holes, which need to be uniformly clamped by a clamping mechanism before machining to ensure machining accuracy. This can be accomplished using the single-power multi-point clamping mechanism provided in this invention.

[0033] First, the operator fixes the main base 1 onto the processing platform and places the metal workpiece to be processed on the support plate 2. Then, the operator rotates the operating handle of the rotating shaft 5, causing the driving gear at the bottom of the shaft 5 to mesh with the transmission gear 6, thereby driving the transmission gear 6 to rotate. The rotation of the transmission gear 6 further pulls the first connecting arm 8 through the connecting rod 7, and the movement of the first connecting arm 8 causes the pressure plate 9 to retract inward. The retraction of the pressure plate 9 causes the locking pin 10 to move out of the fixing hole 12, at which point the fixed connection between the locking block 3 and the main base 1 is released. This step realizes the unlocking operation of the device, facilitating subsequent adjustments and installation.

[0034] Next, the operator inserts the locking block 3 into the locking groove on the support plate 2 and then releases the applied force. At this time, the return spring 11 returns to its original state due to the release of pressure, pushing the locking pin 10 outward and re-inserting it into the fixing hole 12, thereby completing the fixed connection between the locking block 3 and the main base 1. During this process, the hydraulic system in the linkage mechanism works in concert: the first piston in the first hydraulic chamber 13 slides with the movement of the push-pull rod, and hydraulic oil is transmitted to the second hydraulic chamber 14 through the first hydraulic pipe 15 and the second hydraulic pipe 15, pushing the second piston upward. The movement of the second piston drives the support rod to move upward, thereby providing additional support force for the pressing assembly 4 and ensuring the smoothness of the pressing process.

[0035] When it is necessary to clamp the workpiece, the operating handle of the rotating shaft 5 is rotated again. The rotation of the transmission gear 6, through the linkage of the connecting rod 7, the first connecting arm 8, and the clamping plate 9, causes the clamping assembly 4 to move downward and apply pressure to the workpiece. The guide strip on the outer wall of the clamping assembly 4 slides along the guide post, ensuring the stability of the clamping direction. At the same time, the buffer spring at the bottom of the support column adjusts the pressure to prevent damage to the workpiece or device due to excessive pressure. In addition, the slider in the slide rail is connected to the clamping assembly 4 through the second connecting arm, and the movement of the slider further enhances the smoothness of the clamping process.

[0036] Throughout the operation, the design of the sealing ring 16 and the sealing ring effectively prevents hydraulic oil leakage, ensuring the reliability of the hydraulic system. The hydraulic transmission between the first hydraulic chamber 13 and the second hydraulic chamber 14 ensures a uniform distribution of clamping force, avoiding processing errors caused by uneven pressure. Synchronous control of multiple points can be achieved through a single operation, eliminating the need for an additional power source, significantly reducing manufacturing costs and improving production efficiency.

[0037] In summary, this utility model achieves synchronous control of multiple points with a single operation through the linkage design of the rotating shaft 5, transmission gear 6, connecting rod 7, first connecting arm 8, and pressing plate 9. The fit between the locking pin 10 and the fixing hole 12, combined with the elasticity of the return spring 11, ensures the stability and reliability of the device. The hydraulic system in the linkage mechanism, through the coordinated work of the first hydraulic chamber 13, the second hydraulic chamber 14, and the hydraulic pipe 15, further enhances the smoothness of the pressing process and avoids processing errors caused by uneven pressure. The overall structure is compact, the connection relationships between components are clear, facilitating actual production and maintenance, and demonstrating high practical value.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-power multi-point clamping mechanism, comprising a main base (1), a bearing plate (2) on the top of the main base (1), a locking block (3) and a support platform on the bottom and top of the bearing plate (2) respectively, wherein the locking block (3) is assembled in a locking groove opened on the top of the main base (1), and a cavity is opened in the locking block (3), and a clamping assembly (4) is provided above the support platform, characterized in that, The single-power multi-point clamping mechanism further includes: The upper part of the rotating shaft (5) is rotatably connected to the pressing assembly (4) and extends out of the pressing assembly (4). The lower side wall of the shaft is symmetrically provided with driving teeth, which mesh with the transmission gear (6) and the transmission gear (6) is located in the cavity. Two sets of connecting rods (7) are centrally symmetrically arranged on the outer wall of the transmission gear (6). Each set of connecting rods (7) has a first connecting arm (8) hinged to one end. A pressure plate (9) is hinged to one end of the first connecting arm (8). Two sets of locking pins (10) are symmetrically arranged on the outer wall of the pressure plate (9). A return spring (11) is sleeved on the locking pin (10), and the return spring (11) is located between the pressure plate (9) and the inner wall of the cavity. The inner wall of the locking groove is provided with a fixing hole (12) that allows the locking pin (10) to be inserted.

2. A single power multi-point hold down mechanism as claimed in claim 1, wherein, The outer wall of the pressing assembly (4) is provided with several guide strips, and the top of the support platform is symmetrically provided with two sets of guide columns. Each set of guide columns is provided with a support column at the top, and the upper end of the support column is fixedly connected to the top of the pressing assembly (4). The lower end of the support column is located inside the guide column and is connected to a limit block. The bottom of the limit block is provided with a buffer spring.

3. A single power multi-point hold down mechanism as claimed in claim 1, wherein, It also includes a linkage mechanism disposed between the main base (1) and the clamping assembly (4), the linkage mechanism comprising: Two sets of slide rails are symmetrically arranged on the top of the support platform. Each set of slide rails is slidably connected to a slider. The upper end of the slider is movably connected to the inner top of the pressing assembly (4) through a second connecting arm. A push-pull rod is connected to one side of the inner wall of the slider. A first hydraulic chamber (13) is provided on one side of the push-pull rod. A first piston is slidably connected in the first hydraulic chamber (13). One end of the push-pull rod extends into the hydraulic chamber and is connected to the first piston. One end of the first hydraulic chamber (13) is connected to a first hydraulic pipe (15).

4. A single power multi-point hold down mechanism as claimed in claim 3, wherein, The lower end of the first hydraulic pipe (15) passes through the bearing plate (2) and the locking block (3) in sequence and is connected to the second hydraulic pipe (15). One end of the second hydraulic pipe (15) is connected to the second hydraulic chamber (14). The second hydraulic chamber (14) is located in the main base (1). A compression spring is provided in the second hydraulic chamber (14). The top of the compression spring is connected to the second piston. The upper end of the second piston is connected to the support rod. The upper end of the support rod passes through the bearing plate (2) and is inserted into the bottom of the pressing assembly (4).

5. A single power multi-point hold down mechanism as claimed in claim 4, wherein, The upper end face of the second hydraulic pipe (15) is in contact with the lower end face of the first hydraulic pipe (15), and two sets of sealing rings (16) are provided inside the contact area, and the interior of the two sets of sealing rings (16) is filled with sealing gaskets.

6. A single power multi-point hold down mechanism as claimed in claim 1, wherein, The transmission gear (6) and the rotating shaft (5) are rotatably connected to the locking block (3) and the pressing assembly (4) respectively through bearings, and the upper end of the rotating shaft (5) is provided with an operating handle.

7. A single power multi-point hold down mechanism as claimed in claim 3 wherein, The slide rail has a T-shaped cross section, and the two ends of the second connecting arm are respectively hinged to the clamping assembly (4) and the slider.

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