Anti-loosening clamp

Abstract

The utility model discloses an anti-loosening clamping hand which comprises an installation frame. The driving mechanism comprises a driver and a connecting piece, and the driver is connected with the connecting piece; the clamping hand mechanism comprises two clamping hand assemblies, each clamping hand assembly comprises a connecting shaft, a clamping hand piece and a connecting rod piece, the connecting shaft penetrates through the mounting frame, one end of the connecting shaft is a limiting part, the circumferential side face of the other end of the connecting shaft is provided with a threaded face, the end, provided with the threaded face, of the connecting shaft is provided with two limiting nuts, and the two limiting nuts are fixed in a self-locking mode; a gap exists between the limiting nut and the mounting frame, the connecting shaft penetrates through one end of the clamping hand piece, one end of the connecting rod piece is rotatably connected with the clamping hand piece, and the other end of the connecting rod piece is rotatably connected with the connecting piece. According to the utility model, the problem that the clamping hand needs to be fastened for multiple times in the production process due to the fact that the clamping hand device is easy to loosen is effectively solved, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model pertains to hand clamping devices, specifically a hand clamp designed to prevent loosening. Background Technology

[0002] In the process of producing foamed ceramic products in a foamed ceramic kiln, the enclosure panels need to be enclosed to form a space to contain the powder. Generally, the horizontal cross-section of the enclosed space is rectangular, and a single enclosure panel is held by a single clamping device. During the enclosure process, multiple enclosure panels on each side need to be tightly attached to each other, and the enclosure panels on all four sides also need to be tightly attached to each other. Therefore, the clamping device will be subjected to horizontal forces in multiple different directions.

[0003] A typical gripper device includes a drive structure and grippers. The drive structure causes the two grippers to rotate to perform clamping or releasing actions. The grippers rotate around a through shaft, and the two ends of the through shaft are locked by a nut structure, meaning the through shaft does not rotate while the grippers rotate. However, during operation, the grippers are held in place by the surrounding plate and may tilt. In effect, the grippers are tightly pressed against the through shaft, and the grippers and through shaft form a single unit. Therefore, when the grippers rotate, they drive the through shaft to rotate, which in turn causes the nut structure originally used to secure the end of the through shaft to also tend to rotate, eventually leading to loosening.

[0004] Continuous stress during production can cause the gripper device to loosen, failing to effectively clamp the enclosure and thus affecting its sealing effect. In actual production, the existing gripper device does indeed frequently loosen, sometimes requiring daily retightening. If the through shaft is glued in place, the gripper device cannot be disassembled for maintenance. Therefore, it is necessary to improve the existing gripper device to solve the aforementioned problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an anti-loosening gripper, which effectively solves the problem that the gripper device is prone to loosening, resulting in the need to tighten the gripper multiple times during the production process, thereby improving production efficiency.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] An anti-loosening gripper includes:

[0008] Mounting framework;

[0009] The drive mechanism (2) includes a driver and a connector (22), the driver being mounted on the mounting frame (1) and the connector (22) being connected to the driver;

[0010] The gripping mechanism (3) includes two gripping assemblies, which are symmetrically arranged on both sides of the connector (22);

[0011] The gripper assembly includes a connecting shaft, a gripper component, and a connecting rod component. The connecting shaft passes through the mounting frame. One end of the connecting shaft is a limiting part, and the other end of the connecting shaft has a threaded surface on its circumferential side. Two limiting nuts are provided at the threaded end of the connecting shaft, and the two limiting nuts are self-locking. There is a gap between the limiting nuts and the mounting frame. The connecting shaft passes through one end of the gripper component. One end of the connecting rod component is rotatably connected to the gripper component, and the other end of the connecting rod component is rotatably connected to the connecting part.

[0012] Preferably, a wear-resistant sleeve and a positioning sleeve are further provided between the clamping component and the connecting shaft. The wear-resistant sleeve passes through the clamping component and is interference-fitted with the clamping component. The two positioning sleeves are respectively disposed at both ends of the wear-resistant sleeve and are located between the end of the wear-resistant sleeve and the inner wall of the mounting frame. The connecting shaft passes through the wear-resistant sleeve and the two positioning sleeves, and the connecting shaft is gap-connected to both the wear-resistant sleeve and the positioning sleeve.

[0013] Preferably, the gripper includes a gripper plate, and two parallel positioning plates are provided on one side of the gripper plate. Both positioning plates are provided with through holes. The wear-resistant sleeve passes through the through holes of the two positioning plates. The wear-resistant sleeve is interference-fitted with the positioning plates. One end of the connecting rod is also embedded between the two positioning plates, and the connecting rod is hinged to the two positioning plates through a bolt and nut structure.

[0014] Preferably, the clamping end is provided with a pad.

[0015] Preferably, the anti-loosening gripper further includes a buffer mechanism, which includes a sliding base, a fixed base, and a spring assembly. The sliding base is disposed on the mounting frame and is slidably connected to the fixed base. The spring assembly is disposed between the sliding base and the fixed base.

[0016] More preferably, the sliding base is provided with a through groove, the fixed seat is disposed in the through groove, the fixed seat is provided with slide rails on both sides near the through groove, the inner sidewall of the through groove is provided with corresponding slide blocks, and the slide rails are embedded in the slide blocks on the same side.

[0017] More preferably, the bottom surface of the fixed seat is open, the spring assembly includes a fixed shaft, a spring and a movable member, the fixed shaft is disposed inside the fixed seat and is parallel to the external slide rail, the spring is sleeved on the fixed shaft, the fixed shaft passes through the movable member, the spring is located between the movable member and the inner wall of the fixed seat, and the movable member is fixedly connected to the sliding base.

[0018] More preferably, along the sliding direction, the length of the sliding base is less than the length of the fixed base.

[0019] Preferably, a gasket is provided between the limiting part of the connecting shaft and the mounting frame.

[0020] Preferably, the actuator includes a cylinder.

[0021] Beneficial effects:

[0022] This invention has a simple structure. By improving the clamping mechanism, the connecting shaft changes from a locked state to a movable state, effectively solving the problem that the clamping device is prone to loosening and requires multiple tightenings during production, thus improving production efficiency. Attached Figure Description

[0023] Figure 1 The diagram shown is a schematic of this utility model. Figure 1 ;

[0024] Figure 2 The diagram shown is a schematic of this utility model. Figure 2 ;

[0025] Figure 3 The image shown is a partial schematic diagram of this utility model.

[0026] Reference numerals: 1-Mounting frame, 2-Drive mechanism, 3-Grip mechanism, 4-Buffer mechanism;

[0027] 11-Mounting plate, 21-Cylinder, 22-Connector, 31-Connecting section, 32-Clamping section, 33-Connecting rod, 34-Padded block, 35-Positioning sleeve, 36-Wear-resistant sleeve, 37-Connecting shaft, 38-Limit nut, 39-Positioning plate, 41-Sliding base, 42-Fixed seat, 43-Slide block, 44-Slide rail, 45-Fixed shaft, 46-Moving part, 47-Spring. Detailed Implementation

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0029] like Figure 1-3As shown, this utility model proposes an anti-loosening gripper, which solves the problem of easy loosening by changing the gripper fixing structure. The anti-loosening gripper includes a drive mechanism 2, a gripping mechanism 3, and a mounting frame 1. The drive drum is set inside the mounting frame 1, the gripping mechanism 3 is connected to the mounting frame 1, and the gripping mechanism 3 is connected to the drive mechanism 2. The gripping mechanism 3 is controlled to open and close by the drive mechanism 2.

[0030] The technical solution of this utility model will be described in detail below with specific structural features.

[0031] like Figure 2-3 As shown, the mounting frame 1 includes two mounting plates 11 arranged at the front and rear, forming a space between the two mounting plates 11 to accommodate the drive mechanism 2. It is easy to understand that the drive mechanism 2 is locked to the two mounting plates 11 by a bolt and nut structure, and the two mounting plates 11 are also locked to each other by a bolt and nut structure, which will not be described in detail in this utility model.

[0032] like Figure 1-3 As shown, the drive mechanism 2 includes a driver and a connector 22. The driver is disposed within the mounting frame 1, that is, between the two mounting plates 11. The connector 22 is located below the driver and is connected to the driver. The driver controls the lifting and lowering of the connector 22. In this invention, the structure of the driver can be varied, as long as it can control the lifting and lowering of the connector 22. Preferably, the driver is a cylinder 21. The cylinder body of the cylinder 21 is fixedly connected to the two mounting plates 11, the piston of the cylinder 21 faces downward, and the end of the piston is fixedly connected to the connector 22.

[0033] like Figure 1-3 As shown, the gripper mechanism 3 includes two gripper assemblies, which are symmetrically arranged on both sides of the connector 22. Both gripper assemblies are connected to the connector 22 and the mounting frame 1. Each gripper assembly includes a connecting shaft 37, a gripper, and a connecting rod 33, as detailed below:

[0034] like Figure 2 As shown, the connecting shaft 37 passes through two mounting plates 11. One end of the connecting shaft 37 is a limiting part, and the other end of the connecting shaft 37 has a threaded surface on its circumferential side. Two limiting nuts 38 are provided at the threaded end of the connecting shaft 37. The two limiting nuts 38 are self-locking and fixed, and there is a gap between the limiting nuts 38 and the adjacent mounting plates 11. That is, the connecting shaft 37 is rotatable within the mounting frame 1.

[0035] like Figure 1As shown, the gripper includes a connecting section 31 and a clamping section 32 arranged from top to bottom. The connecting section 31 has a through hole, and a connecting shaft 37 passes through the through hole of the connecting section 31. One end of the connecting rod 33 is rotatably connected to the connecting section 31, and the other end of the connecting rod 33 is rotatably connected to the connecting member 22 of the drive mechanism 2. Thus, when the connecting member 22 is raised or lowered, the two connecting rods 33 drive the grippers on both sides to rotate about the connecting shaft 37 on the same side, thereby realizing the opening and closing of the gripper mechanism 3. It is easy to understand that the hinge point between the connecting rod and the connecting section 31 is preferably located below the through hole of the connecting section 31, which is beneficial for controlling the opening and closing of the gripper.

[0036] Because there is a gap between the limiting nut 38 and the mounting frame 1, the connecting shaft 37 and the mounting frame 1 are movable. Even if the connecting section 31 abuts against the connecting shaft 37 during the rotation of the clamping part, the connecting shaft 37 can rotate with it, and the limiting nut 38 will not be loosened by external force.

[0037] Furthermore, a wear-resistant sleeve 36 and a positioning sleeve 35 are provided between the gripper and the connecting shaft 37. The wear-resistant sleeve 36 passes through the through hole of the connecting section 31 and is interference-fitted with the connecting section 31 of the gripper. Two positioning sleeves 35 are respectively provided at both ends of the wear-resistant sleeve 36, positioned between the end of the wear-resistant sleeve 36 and the adjacent mounting plate 11. The connecting shaft 37 passes through the wear-resistant sleeve 36 and the two positioning sleeves 35, and is clearance-connected to both the wear-resistant sleeve 36 and the positioning sleeves 35. The gripper is in direct contact with the wear-resistant sleeve 36. When the gripper rotates, it is actually a relative rotation between the wear-resistant sleeve 36 and the connecting shaft 37. The function of the two positioning sleeves 35 is to limit the gripper and prevent it from deviating too much along the axial direction of the connecting shaft 37.

[0038] In addition, the positioning sleeve 35 also helps to prevent the clamping parts from loosening. The reason is that when the clamping parts are affected by external force and the wear-resistant sleeve 36 tends to abut against the connecting shaft 37, the wear-resistant sleeve 36 is restricted by the positioning parts. That is, the wear-resistant sleeve 36 will exert a force on the positioning sleeve 35 on one side, so that the positioning sleeve 35 will also press against the adjacent mounting plate 11. Therefore, the wear-resistant sleeve 36 transfers the force that originally affected the connecting shaft 37 to the adjacent positioning sleeve 35. At this time, the clamping parts can still rotate, but the resistance is greater. The influence of the positioning sleeve 35 and the wear-resistant sleeve 36 on the connecting shaft 37 is reduced, thereby effectively preventing the connecting shaft 37 from loosening.

[0039] Preferably, a gasket is provided between the limiting part of the connecting shaft 37 and the corresponding mounting plate 11.

[0040] Preferably, the clamping section 32 of the gripper is provided with a pad 34 to increase the friction between the gripper and the surrounding plate.

[0041] like Figure 1-3As shown, this utility model proposes one specific connection structure between the gripper and the wear-resistant sleeve 36. Other applicable structures will not be described in detail. The gripper includes a gripping plate. Two parallel positioning plates 39 are provided on one side of the gripping plate. Both positioning plates 39 have through holes. The wear-resistant sleeve 36 passes through the through holes of the two positioning plates 39. One end of a connecting rod 33 is also embedded between the two positioning plates 39, and the connecting rod 33 and the two positioning plates 39 are hinged by a bolt and nut structure. A pad 34 is provided on the other side of the gripping plate for clamping the surrounding plate. It is easy to understand that the part of the gripper with the two positioning plates 39 is the connecting section 31, and the part of the gripper with the pad 34 is the clamping section 32.

[0042] Furthermore, the anti-loosening gripper also includes a buffer mechanism 4, which is mounted on the mounting frame 1. In addition to improving the structure of the gripper and connecting shaft 37, this invention also proposes a buffer mechanism 4 for the entire device to reduce the impact of external forces on the gripper. The buffer mechanism 4 includes a sliding base 41, a fixed base 42, and a spring assembly, such as... Figure 1 As shown, the sliding base 41 is disposed on the mounting frame 1, and the sliding base 41 is slidably connected to the fixed base 42. The spring assembly is disposed between the sliding base 41 and the fixed base 42.

[0043] The fixed base 42 is connected to the external frame. The sliding base 41, the mounting frame 1, and the drive mechanism 2 and gripping mechanism 3 within the mounting frame 1 form a single unit. This unit can move along the fixed base 42. The function of the spring 47 mechanism is to restrict the arbitrary movement of the sliding base 41. Along the sliding direction, the length of the sliding base 41 is less than the length of the fixed base 42.

[0044] Specifically, the sliding base 41 is provided with a through groove, the fixed base 42 is provided in the through groove, the fixed base 42 is provided with a slide rail 44 on the side near the through groove, the inner wall of the through groove is provided with a slide block 43, and the slide rail 44 is embedded in the slide block 43 on the same side. That is, both sides of the fixed base 42 are provided with slide rails 44, and two slide blocks 43 are provided in the through groove inside the sliding base 41. The connection between the sliding base 41 and the fixed base 42 is realized through the connection between the slide block 43 and the slide rail 44.

[0045] The bottom surface of the fixed base 42 is open. The spring assembly includes a fixed shaft 45, a spring 47, and a movable member 46. The fixed shaft 45 is disposed inside the fixed base 42 and is parallel to the external slide rail 44. The spring 47 is sleeved on the fixed shaft 45. The fixed shaft 45 passes through the movable member 46. The spring 47 is located between the movable member 46 and the inner wall of the fixed base 42. The movable member 46 is fixedly connected to the sliding base 41.

[0046] It is easy to understand that the spring 47 is always in a compressed state within the fixed seat 42. When it is not affected by external force, the spring 47 keeps the moving part 46 pressed against the inner wall of the adjacent fixed seat 42. When the clamping mechanism 3 is affected by external force during the clamping process of the enclosure, the clamping mechanism 3, the mounting frame 1, and the drive mechanism 2 can be translated a certain distance as a buffer to reduce the possibility of the clamping hand becoming loose due to being pressed against the enclosure.

[0047] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A method for preventing loosening of a gripper, characterized in that, include: Mounting frame (1); The drive mechanism (2) includes a driver and a connector (22), the driver being mounted on the mounting frame (1) and the connector (22) being connected to the driver; The gripping mechanism (3) includes two gripping assemblies, which are symmetrically arranged on both sides of the connector (22); The gripper assembly includes a connecting shaft (37), a gripper and a connecting rod (33). The connecting shaft (37) passes through the mounting frame (1). One end of the connecting shaft (37) is a limiting part. The other end of the connecting shaft (37) has a threaded surface on its circumferential side. Two limiting nuts (38) are provided at the threaded end of the connecting shaft (37). The two limiting nuts (38) are self-locking and fixed. There is a gap between the limiting nuts (38) and the mounting frame (1). The connecting shaft (37) passes through one end of the gripper. One end of the connecting rod (33) is rotatably connected to the gripper. The other end of the connecting rod (33) is rotatably connected to the connecting member (22).

2. The anti-loosening gripper according to claim 1, characterized in that, A wear-resistant sleeve (36) and a positioning sleeve (35) are also provided between the clamping member and the connecting shaft (37). The wear-resistant sleeve (36) passes through the clamping member and is interference-fitted with the clamping member. The two positioning sleeves (35) are respectively provided at both ends of the wear-resistant sleeve (36). The positioning sleeves (35) are located between the end of the wear-resistant sleeve (36) and the inner wall of the mounting frame (1). The connecting shaft (37) passes through the wear-resistant sleeve (36) and the two positioning sleeves (35), and the connecting shaft (37) is gap-connected with the wear-resistant sleeve (36) and the positioning sleeves (35).

3. The anti-loosening gripper according to claim 2, characterized in that, The clamping component includes a clamping plate, and two parallel positioning plates (39) are provided on one side of the clamping plate. Both positioning plates (39) are provided with through holes. The wear-resistant sleeve (36) passes through the through holes of the two positioning plates (39). The wear-resistant sleeve (36) is interference-fitted with the positioning plates (39). One end of the connecting rod (33) is also embedded between the two positioning plates (39), and the connecting rod (33) and the two positioning plates (39) are hinged by a bolt and nut structure.

4. A gripper protection mechanism according to any one of claims 1-3, characterized in that, The clamping member has a pad (34) at one end for clamping.

5. A gripper protection mechanism according to any one of claims 1-3, characterized in that, It also includes a buffer mechanism (4), which includes a sliding base (41), a fixed base (42) and a spring assembly. The sliding base (41) is disposed on the mounting frame (1) and is slidably connected to the fixed base (42). The spring assembly is disposed between the sliding base (41) and the fixed base (42).

6. The anti-loosening gripper according to claim 5, characterized in that, The sliding base (41) is provided with a through groove, the fixed base (42) is provided in the through groove, the fixed base (42) is provided with slide rails (44) on both sides of the through groove, and the inner sidewall of the through groove is provided with a corresponding slide block (43), and the slide rail (44) is embedded in the slide block (43) on the same side.

7. The anti-loosening gripper according to claim 6, characterized in that, The bottom surface of the fixed seat (42) is open. The spring assembly includes a fixed shaft (45), a spring (47), and a moving part (46). The fixed shaft (45) is disposed inside the fixed seat (42) and is parallel to the external slide rail (44). The spring (47) is sleeved on the fixed shaft (45). The fixed shaft (45) passes through the moving part (46). The spring (47) is located between the moving part (46) and the inner wall of the fixed seat (42). The moving part (46) is fixedly connected to the sliding base (41).

8. The anti-loosening gripper according to claim 6, characterized in that, Along the sliding direction, the length of the sliding base (41) is less than the length of the fixed base (42).

9. The anti-loosening gripper according to claim 1, characterized in that, A gasket is provided between the limiting part of the connecting shaft (37) and the mounting frame (1).

10. The anti-loosening gripper according to claim 1, characterized in that, The actuator includes a cylinder (21).

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