Novel clamping jaw radial synchronous moving mechanism
By designing a new type of radial synchronous movement mechanism of jaws, the hydraulic motor and chain system are used to drive the cylinder movement, and combined with the sliding structure of sliding blocks and seven-character iron, the problem of easy self-locking when the cylinder moves in the prior art is solved, and the stability and reliability of the cylinder are achieved.
Patent Information
- Application Number
- CN202411930786.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-04-11
AI Technical Summary
When the cylinder movement range is too large, the existing jaw radial synchronous movement mechanism is prone to excessively large angles in the direction of force and movement, resulting in self-locking and even damage.
A new type of radial synchronous movement mechanism of jaws is designed, using a hydraulic motor to drive the active sprocket, and the cylinder position adjustment screw is driven through the chain system to realize the reverse movement of the right claw cylinder and the left claw cylinder. Combined with the sliding structure of the sliding block and the seven-character iron, the stability of the cylinder is increased.
It effectively avoids the self-locking phenomenon of the jaw cylinder, ensures the stability and reliability of the cylinder when it moves on a large scale, and extends the service life of the mechanical structure.
Smart Images
Figure CN119795035A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of valve grinding machine equipment, in particular to a novel radial synchronous moving mechanism of clamping jaws. Background Art
[0002] Valves are an important branch of general mechanical products, and they play an important role in controlling the on-off and flow of working media in a wide range of fluid engineering pipelines. The accuracy of the valve seat sealing surface directly affects the sealing of the valve. Valve grinding machines have been widely used in recent years. In order to achieve the versatility of large and small caliber valves on the same equipment, the clamps used to fix the valve body on the workbench should be designed to be able to move synchronously.
[0003] The existing jaw cylinder synchronization mechanism adopts a crank-connecting rod form. When the jaw cylinder has a large moving range, the length of the rocker arm will also be very long, resulting in a large angle between the force direction and the moving direction of the jaw cylinder, which is prone to self-locking. When self-locking, the jaw cylinder cannot be moved even if the driving force is increased until the mechanical structure is damaged. Summary of the invention
[0004] The purpose of the present invention is to provide a new type of radial synchronous movement mechanism of the jaws to solve the problem of the radial synchronous movement mechanism of the jaws currently used proposed in the above background technology that when the movement range of the cylinder is too large, the angle between the force direction and the movement direction of the jaw cylinder will be too large, which will easily cause self-locking phenomenon and lead to damage to the mechanical structure.
[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a novel radial synchronous movement mechanism of a clamping jaw, comprising: a grinder, a workbench is installed on one side of the grinder;
[0006] The cam is provided with a plurality of guide wheels, and a plurality of guide wheels are provided on the inner side of the guide wheels, and a plurality of guide wheels are provided on the outer side of the guide wheels, and a plurality of guide wheels are provided on the inner side of the guide wheels, and a plurality of guide wheels are provided on the outer side of the guide wheels.
[0007] Preferably, the seven-shaped iron is installed on the inner wall of the workbench, and four groups of the seven-shaped iron are installed symmetrically about the center line of the workbench.
[0008] Preferably, the right clamping jaw oil cylinder and the left clamping jaw oil cylinder both form a sliding structure through a sliding block and a seven-shaped iron.
[0009] Preferably, the left chain and the right chain are connected into an integral structure via two cylinder position adjusting screws.
[0010] Preferably, one side of the chain tensioning bolt presses against one side of the hydraulic motor mounting seat.
[0011] Compared with the prior art, the beneficial effect of the present invention is that when the new type of radial synchronous movement mechanism of the jaws is in use, the hydraulic motor body can be started, so that the hydraulic motor body drives the right chain and the left chain to rotate through the active sprocket, and at the same time, the right jaw cylinder is driven to move through the cylinder position adjusting screw connected above the right chain, and the left jaw cylinder is driven to move through the cylinder position adjusting screw connected below the left chain, and the right jaw cylinder and the left jaw cylinder are made to move in opposite directions. When the right jaw cylinder and the left jaw cylinder move in opposite directions, the clamping block can be driven to clamp the valve body on the workbench, thereby facilitating the operation of the user. At the same time, the sliding block at one end of the right jaw cylinder and the left jaw cylinder can increase the stability of the right jaw cylinder and the left jaw cylinder. This is the use feature of the new type of radial synchronous movement mechanism of the jaws. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;
[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the right clamping jaw oil cylinder of the present invention;
[0014] Figure 3 It is a three-dimensional structural schematic diagram of the driven sprocket of the present invention;
[0015] Figure 4 It is a schematic diagram of the structure of the clamping jaws and cylinders of the present invention being close to each other;
[0016] Figure 5 It is a schematic diagram of the overall cross-section structure of the chain of the present invention;
[0017] Figure 6 It is a schematic diagram of the structure in which the clamping jaws and cylinders of the present invention are far away from each other;
[0018] Figure 7 For the present invention Figure 3 The enlarged structural diagram at A in the middle;
[0019] Figure 8 For the present invention Figure 3 Enlarged structural diagram at B in the middle.
[0020] In the figure: 1. grinder; 2. workbench; 3. hydraulic motor mounting base; 4. hydraulic motor body; 5. chain tensioning bolt; 6. driving sprocket; 7. right chain; 8. cylinder position adjustment screw; 9. locking nut; 10. cylinder fixing ear plate; 11. right clamping jaw cylinder; 12. left clamping jaw cylinder; 13. left chain; 14. driven sprocket; 15. sliding block; 16. seven-shaped iron; 17. clamping block. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] See also Figure 1-Figure 8 , the present invention provides a technical solution: a novel clamping jaw radial synchronous movement mechanism, comprising: a grinder 1, a workbench 2 is installed on one side of the grinder 1;
[0023] A hydraulic motor mounting seat 3 is installed at the bottom of the workbench 2, and a hydraulic motor body 4 is installed on one side of the hydraulic motor mounting seat 3. A chain tensioning bolt 5 is connected to one side of the workbench 2 through a fixing nut, and an output end of the hydraulic motor body 4 is connected to a driving sprocket 6 through a driving shaft, and a right chain 7 is installed on the inner side of the driving sprocket 6, and a cylinder position adjusting screw 8 is connected to one side of the right chain 7, and a locking nut 9 is sleeved on the outer side of the cylinder position adjusting screw 8, and one end of the cylinder position adjusting screw 8 is connected to a cylinder fixing ear plate 10, and one end of the cylinder fixing ear plate 10 is respectively connected to a right clamping jaw cylinder 11 and a left clamping jaw cylinder 12, and the other side of the cylinder fixing ear plate 10 is connected to a left chain 13 through the cylinder position adjusting screw 8, and the inner side of the left chain 13 is connected to A driven sprocket 14 is connected, and a sliding block 15 is installed on one side of the right clamping cylinder 11 and the left clamping cylinder 12. Both ends of the sliding block 15 are provided with a seven-shaped iron 16. One side of the sliding block 15 is connected to a clamping block 17 that passes through the slide groove of the workbench 2. The seven-shaped iron 16 is installed on the inner wall of the workbench 2. Four groups of seven-shaped irons 16 are installed symmetrically about the center line of the workbench 2. The right clamping cylinder 11 and the left clamping cylinder 12 both form a sliding structure through the sliding block 15 and the seven-shaped iron 16. The left chain 13 and the right chain 7 are connected to an integral structure through two cylinder position adjusting screws 8. One side of the chain tensioning bolt 5 is against one side of the hydraulic motor mounting seat 3, and the hydraulic motor mounting seat 3 is installed on the workbench 2 through the waist-shaped hole and the matching fixing bolt.
[0024] During specific implementation, the radial synchronous movement mechanism of the clamping jaws of the invention can first install the entire mechanism inside the workbench 2, first install the driven sprocket 14 and the driving sprocket 6 inside the workbench 2, then install the left chain 13 and the right chain 7 to both sides of the driven sprocket 14 and the driving sprocket 6, and then screw in the chain tensioning screw through the fixing nut, and dock the hydraulic motor mounting seat 3 with the waist-shaped hole on the workbench 2, according to the tension of the left chain 13 and the right chain 7, rotate the chain tensioning screw so that the chain tensioning screw pushes the hydraulic motor mounting seat 3 to move along the waist-shaped hole on the workbench 2, and after adjusting the hydraulic motor mounting seat 3 to a suitable position, the hydraulic motor mounting seat 3 can be fixed by fixing bolts, and at the same time, the hydraulic motor body 4 is installed on the hydraulic motor mounting seat 3 by fixing bolts;
[0025] Then, the locking nut 9 is rotated so that the locking nut 9 does not fix the cylinder fixing ear plate 10. At this time, the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12 can slide along the cylinder position adjusting screw 8 through the cylinder fixing ear plate 10, so that the positions of the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12 can be adjusted, so that the left clamping jaw cylinder 12 and the right clamping jaw cylinder 11 are completely symmetrical relative to the center of the workbench 2, and then the locking nut 9 is rotated in the opposite direction so that the locking nut 9 can fix the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12 through the cylinder fixing ear plate 10, thereby completing the assembly and adjustment work of the entire mechanism;
[0026] During operation, it is only necessary to start the hydraulic motor body 4 so that the hydraulic motor body 4 drives the active sprocket 6 to rotate clockwise. The clockwise rotation of the active sprocket 6 will drive the left chain 13 and the right chain 7 to move in the clockwise direction through the cylinder position adjusting screw 8. The cylinder position adjusting screw 8 of the right clamping jaw cylinder 11 is installed on the upper part of the right chain 7, and the cylinder position adjusting screw 8 of the left clamping jaw cylinder 12 is installed on the lower part of the left chain 13, and the sliding block 15 is slidably connected in the slide groove reserved between the seven-shaped iron 16 and the workbench 2, and the sliding block 15 is respectively installed on one side of the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12. Therefore, when the active sprocket 6 rotates clockwise, When rotating, it will drive the right-side clamping cylinder 11 to move rightward through the sliding block 15 and the seven-shaped iron 16, and the left-side clamping cylinder 12 to move leftward through the sliding block 15 and the seven-shaped iron 16. The movement of the right-side clamping cylinder 11 and the left-side clamping cylinder 12 will drive the clamping block 17 to move away from each other. This process is the opening process of the clamping cylinder. Since the left-side chain 13 and the right-side chain 7 can be regarded as a whole through the cylinder position adjusting screw 8, the displacement of the two groups of clamping cylinders is the same, thereby achieving the purpose of synchronous movement. On the contrary, the hydraulic motor body 4 rotates counterclockwise, and the left-side clamping cylinder 12 and the right-side clamping cylinder 11 move in the opposite direction according to the above process. This process is the retracting process of the clamping cylinder.
[0027] See also Figure 1-Figure 8 It can be seen that when in use, the hydraulic motor body 4 can be started according to the use requirements, and the hydraulic motor body 4 will drive the active sprocket 6 to rotate. The rotation of the active sprocket 6 will cooperate with the driven sprocket 14 to drive the left chain 13 and the right chain 7 to rotate. Since the right clamping cylinder 11 and the left clamping cylinder 12 are respectively installed at the upper end of the right chain 7 and the lower end of the left chain 13, the rotation of the left chain 13 and the right chain 7 will drive the right clamping cylinder 11 and the left clamping cylinder 12 to move in opposite directions, thereby controlling the clamping and placing of the valve body on the workbench 2, which is convenient for users to operate.
[0028] To sum up: when the new type of radial synchronous movement mechanism of the clamping jaws is in use, the entire mechanism is first installed inside the workbench 2, and then the driving sprocket 6 is driven to rotate by the hydraulic motor body 4. The rotation of the driving sprocket 6 will drive the left chain 13 and the right chain 7 to rotate. When the left chain 13 and the right chain 7 rotate clockwise, the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12 will be driven to move away from each other through the left chain 13 and the right chain 7. Conversely, the right clamping jaw cylinder 11 and the left clamping jaw cylinder 12 can be made to move closer to each other, so that the valve body on the workbench 2 can be clamped, and then the valve body can be ground by the grinder 1. This is the use feature of the new type of radial synchronous movement mechanism of the clamping jaws. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.
[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A novel radial synchronous movement mechanism of the clamping jaws, comprising: A grinding machine (1), characterized in that: a workbench (2) is installed on one side of the grinding machine (1); A hydraulic motor mounting seat (3) is installed at the bottom of the workbench (2), a hydraulic motor body (4) is installed on one side of the hydraulic motor mounting seat (3), a chain tensioning bolt (5) is connected to one side of the workbench (2) via a fixing nut, an output end of the hydraulic motor body (4) is connected to a driving sprocket (6) via a driving shaft, a right chain (7) is installed on the inner side of the driving sprocket (6), a cylinder position adjustment screw (8) is connected to one side of the right chain (7), a locking nut (9) is sleeved on the outer side of the cylinder position adjustment screw (8), and one end of the cylinder position adjustment screw (8) is connected to a cylinder A fixed ear plate (10), one end of the cylinder fixed ear plate (10) is respectively connected to a right clamping jaw cylinder (11) and a left clamping jaw cylinder (12), the other side of the cylinder fixed ear plate (10) is connected to a left chain (13) through a cylinder position adjustment screw (8), the inner side of the left chain (13) is connected to a driven sprocket (14), one side of the right clamping jaw cylinder (11) and the left clamping jaw cylinder (12) are both installed with sliding blocks (15), both ends of the sliding blocks (15) are provided with seven-shaped irons (16), and one side of the sliding block (15) is connected to a clamping block (17) that passes through a slide groove of a workbench (2).
2. According to claim 1, a novel radial synchronous movement mechanism of the clamping jaws is characterized in that: The seven-shaped iron (16) is installed on the inner wall of the workbench (2), and four groups of the seven-shaped iron (16) are installed symmetrically about the center line of the workbench (2).
3. According to claim 1, a novel radial synchronous movement mechanism of the clamping jaws is characterized in that: The right clamping jaw oil cylinder (11) and the left clamping jaw oil cylinder (12) both form a sliding structure through a sliding block (15) and a seven-shaped iron (16).
4. According to claim 1, a novel radial synchronous movement mechanism of the clamping jaws is characterized in that: The left chain (13) and the right chain (7) are connected to form an integral structure via two oil cylinder position adjusting screw rods (8).
5. According to claim 1, a novel radial synchronous movement mechanism of the clamping jaws is characterized in that: One side of the chain tensioning bolt (5) is pressed against one side of the hydraulic motor mounting seat (3).