Clamping fixture for hollow square tube precision parts

Abstract

The utility model relates to the technical field of positioning fixtures, and discloses a clamping fixture for hollow square tube precision parts. The clamping fixture comprises a mounting plate and an inner clamping fixture body, a hanging ring is fixed above the mounting plate, and an inner clamping fixture body is fixed below the mounting plate; the inner clamping fixture body is provided with an inner clamping installation side plate assembly and a fixture protection pressing gasket. The number of the clamp protection pressing gaskets is at least two, the two clamp protection pressing gaskets are located on the two sides of the inner clamping installation side plate assembly respectively, and the two clamp protection pressing gaskets are fixedly connected with the inner clamping installation side plate assembly through first fixing bolts. Wherein the space between the inner clamping installation side plate assembly and the clamp protection pressing gasket is used for fixing the hollow square tube type precision part. Based on the lifting tool, the problem that in the prior art, edge breakage or damage is prone to occurring in the lifting process of hollow square pipe type precision parts can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a clamping fixture used for hollow square tube precision parts. Background Art

[0002] Hollow square tube precision parts are widely used in various industrial equipment requiring high precision and high reliability due to their special structure and material requirements.

[0003] In the prior art, lifting is usually done by connecting a standard lifting device with pre-reserved threaded holes (e.g., four M8 screw holes) on the part. However, due to the brittle nature of silicon carbide, it is prone to edge chipping or damage during lifting. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides a clamping fixture for hollow square tube precision parts.

[0005] The embodiment of the utility model provides a clamping fixture for hollow square tube precision parts, comprising a mounting plate and an inner clamping fixture body;

[0006] A lifting ring is fixed above the mounting plate, and the inner clamping fixture body is fixed below the mounting plate;

[0007] The inner clamping clamp body is provided with an inner clamping mounting side plate assembly and a clamp protection and compression gasket; the clamp protection and compression gasket is provided with at least two pieces, and the two pieces of the clamp protection and compression gasket are respectively located on both sides of the inner clamping mounting side plate assembly, and the two pieces of the clamp protection and compression gasket are fixedly connected to the inner clamping mounting side plate assembly by a first fixing bolt;

[0008] Among them, the inner clamping mounting side plate assembly and the fixture protection compression gasket are used to fix hollow square tube precision parts.

[0009] According to an embodiment of the present invention, the inner clamping mounting side plate assembly is provided with two inner clamping mounting side plates, and the two inner clamping mounting side plates are arranged in parallel and symmetrically fixed below the mounting plate.

[0010] According to an embodiment of the present invention, first bolt holes compatible with the first fixing bolts are opened at the left and right ends of the inner clamping mounting side plate, and second bolt holes compatible with the first fixing bolts are opened at the left and right ends of the clamp protection clamping gasket.

[0011] According to an embodiment of the present invention, a first clamp protection rubber gasket is fixed to the outer sides of the two inner clamping mounting side plates, and a second clamp protection rubber gasket is fixed to the inner side of the inner clamping mounting side plates.

[0012] According to an embodiment of the present invention, third bolt holes are provided at both ends of the upper sides of the two inner clamping mounting side plates, and fourth bolt holes matching the third bolt holes are provided on the mounting plate;

[0013] The inner clamping mounting side plate is fixedly connected to the mounting plate via a second fixing bolt and the third bolt hole, and the second fixing bolt is passed through the fourth bolt hole.

[0014] According to an embodiment of the present invention, a plurality of weight-reducing through holes are provided on the mounting plate, a fixing hole adapted to the lifting ring is provided on the mounting plate, and the lower end of the lifting ring is fixed in the fixing hole.

[0015] According to an embodiment of the present invention, a self-lubricating bushing is sleeved on the outer side of the first fixing bolt.

[0016] The present utility model provides a clamping fixture for hollow square tube-like precision parts, which can solve the problem in the prior art that hollow square tube-like precision parts are prone to edge collapse or damage during the lifting process. Specifically, the present utility model utilizes the four reserved threaded holes of the long hollow square tube-like parts to fasten the clamp protection clamping gasket and the inner clamping fixture body to both sides of the part through the first fixing bolt. This structure makes full use of the structure of the threaded holes, which not only ensures the firmness of the clamping during fixation, but also reduces the squeezing of the edge of the part, thereby effectively preventing the edge collapse or breakage caused by uneven clamping or lifting force. The clamp protection clamping gasket can disperse stress during the clamping process, so that the clamping force can act more evenly on the surface of the part, avoiding single-point stress concentration. Based on the above-mentioned clamping fixture, it can not only provide strong support and protection, but also effectively prevent damage to the edge of the part through structural design, greatly improving the safety and efficiency of lifting and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 The schematic diagram shows the structure of a clamping fixture for hollow square tube precision parts provided in accordance with an embodiment of the present invention.

[0019] Figure 2 The schematic diagram shows the structure of an inner clamping fixture body provided according to an embodiment of the present utility model.

[0020] Figure 3 The schematic diagram shows the structure of an inner clamping installation side plate provided according to an embodiment of the present utility model.

[0021] In the figure, 1. Mounting plate; 2. Inner clamping fixture body; 3. Lifting ring; 4. Clamp protection pressure gasket; 5. First fixing bolt; 6. Inner clamping mounting side plate; 7. First bolt hole; 8. Second bolt hole; 9. First clamp protection rubber gasket; 10. Second clamp protection rubber gasket; 11. Third bolt hole; 12. Fourth bolt hole; 13. Second fixing bolt; 14. Weight-reducing through hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In view of the problems existing in the prior art, the present invention provides a clamping fixture for hollow square tube precision parts. The present invention is described in detail below with reference to the accompanying drawings.

[0024] Figure 1 The schematic diagram shows the structure of a clamping fixture for hollow square tube precision parts provided in accordance with an embodiment of the present invention.

[0025] Figure 2 The schematic diagram shows the structure of an inner clamping fixture body provided according to an embodiment of the present utility model.

[0026] Figure 3 The schematic diagram shows the structure of an inner clamping installation side plate provided according to an embodiment of the present utility model.

[0027] like Figures 1 to 3 As shown, the clamping fixture for hollow square tube precision parts provided by the embodiment of the present invention includes a mounting plate 1 and an inner clamping fixture body 2.

[0028] In this embodiment, the main components of the clamping fixture are the mounting plate 1 and the inner clamping fixture body 2. The mounting plate 1 serves to connect and support other components, while the inner clamping fixture body 2 is the key part that directly contacts and clamps precision parts such as hollow square tubes.

[0029] Optionally, the mounting plate 1 can be made of different materials based on specific implementation needs, such as high-strength aluminum alloy or carbon fiber, to reduce the overall weight of the fixture. The inner clamping fixture body 2 can be adaptively adjusted based on the size of precision parts such as hollow square tubes.

[0030] A lifting ring 3 is fixed above the mounting plate 1 , and an inner clamping fixture body 2 is fixed below the mounting plate 1 .

[0031] In this embodiment, the provision of lifting rings 3 facilitates lifting operations using equipment such as cranes. By securing the lifting rings 3 above the mounting plate 1, the lifting force is evenly transmitted to the entire clamping fixture and the clamped component. Optionally, multiple lifting rings 3 can be added to the mounting plate 1 to improve lifting stability.

[0032] The inner clamping fixture body 2 is fixed under the mounting plate 1 to ensure a secure connection between the two. During the lifting process, the mounting plate 1 withstands the tension from the lifting ring 3 and transmits the force to the part through the fixed connection with the inner clamping fixture body 2, achieving safe lifting.

[0033] The inner clamping fixture body 2 is equipped with an inner clamping mounting side plate assembly and a fixture protection and compression gasket 4. At least two clamp protection and compression gaskets 4 are provided, one on each side of the inner clamping mounting side plate assembly. Both clamp protection and compression gaskets 4 are fixed to the inner clamping mounting side plate assembly via first fixing bolts 5. In actual use, the space between the inner clamping mounting side plate assembly and the clamp protection and compression gasket 4 is used to secure precision parts such as hollow square tubes.

[0034] In this embodiment, the inner clamping mounting side plate assembly and the clamp protection and compression gasket 4 together constitute the clamping structure of the inner clamping clamp body 2. The inner clamping mounting side plate assembly and the clamp protection and compression gasket 4 are used to provide clamping force, and the clamp protection and compression gasket 4 can also play a role in protecting the surface of the part.

[0035] At least two clamp protection and compression washers 4 are installed, one on each side of the inner clamping mounting side plate assembly, to clamp and protect parts from two directions. A first fixing bolt 5 secures the clamp protection and compression washers 4 to the inner clamping mounting side plate assembly, ensuring the stability of the clamping structure. Optionally, a locking device, such as a spring washer or nut locker, can be installed on the first fixing bolt 5 to prevent the bolt from loosening.

[0036] The clamping force between the inner clamping mounting side plate assembly and the clamp protection pressure gasket 4 firmly fixes the part in the clamp, preventing it from loosening or slipping during lifting. Optionally, a sensor can be installed on the clamping fixture to monitor the clamping force in real time to ensure that the part is lifted in a safe clamping state.

[0037] In an optional embodiment, the inner clamping mounting side plate assembly is provided with two inner clamping mounting side plates 6 , and the two inner clamping mounting side plates 6 are provided in parallel and symmetrically fixed below the mounting plate 1 .

[0038] The two inner clamping mounting side plates 6 of the inner clamping mounting side plate assembly adopt a split design, which can reduce the overall weight of the inner clamping mounting side plate assembly.

[0039] The two parallel inner clamping mounting side plates 6 apply clamping force to the parts on the same plane, avoiding uneven clamping force caused by non-parallel side plates. This reduces localized stress on the parts during clamping and reduces the risk of damage. Furthermore, their symmetrical fixation beneath the mounting plate 1 ensures uniform force transfer during lifting, resulting in more balanced force across the entire clamping fixture and improved lifting safety.

[0040] Optionally, the inner clamping mounting side plate 6 can be made of a high-strength, lightweight alloy material to further reduce the weight of the entire fixture while ensuring sufficient strength. For example, a titanium alloy material can be used, which has the characteristics of high strength and low density, and can improve the strength of the side plate without adding too much weight.

[0041] In an optional embodiment, first bolt holes 7 compatible with the first fixing bolts 5 are opened at the left and right ends of the inner clamping mounting side plate 6, and second bolt holes 8 compatible with the first fixing bolts 5 are opened at the left and right ends of the clamp protection clamping gasket 4.

[0042] In this embodiment, first bolt holes 7 are provided on the left and right ends of the inner clamping mounting side plate 6 of the clamping fixture. These holes are designed to engage with first fixing bolts 5 to securely connect the fixture's protective pressure gasket 4 to the inner clamping mounting side plate 6. Optionally, threaded bushings can be provided in the bolt holes to enhance the strength and durability of the bolted connection. Furthermore, bolt holes of varying sizes can be provided to accommodate first fixing bolts 5 of varying sizes, thereby enhancing the fixture's versatility.

[0043] The second bolt holes 8 on the clamp protection compression gasket 4 are also used to cooperate with the first fixing bolts 5 to fix the gasket to the inner clamp mounting side plate 6. The positions of these bolt holes correspond to the first bolt holes 7 on the inner clamp mounting side plate 6, ensuring that the bolts can pass through smoothly and achieve a tight connection.

[0044] In an optional embodiment, a first clamp protection rubber gasket 9 is fixed to the outer side of the two inner clamping mounting side plates 6 , and a second clamp protection rubber gasket 10 is fixed to the inner side of the inner clamping mounting side plates 6 .

[0045] In this embodiment, a first clamp protection rubber gasket 9 is provided on the outside of the two inner clamping mounting side panels 6. Its main function is to provide a buffer during the clamping process and reduce the impact and wear on the external structure. The rubber gasket has a certain elasticity and can adapt to different clamping forces. At the same time, it can also prevent the side panels from directly contacting the precision parts such as hollow square tubes and causing damage. Optionally, rubber gaskets of different hardness can be selected in actual applications to adapt to different clamping requirements and working environments. For example, for situations where greater buffering is required, a softer rubber material can be selected; for situations where higher wear resistance is required, a rubber with a slightly higher hardness can be used. Anti-slip patterns can also be added to the rubber gasket to improve the stability of the clamping.

[0046] A second clamp protection rubber gasket 10 is installed on the inner side of the inner clamping mounting side plate 6, primarily to protect the clamped hollow square tube precision component. The rubber gasket prevents direct, hard contact between the side plate and the hollow square tube precision component, preventing scratches or damage to the surface of the hollow square tube precision component. Furthermore, the elasticity of the rubber evenly distributes the clamping force across the surface of the hollow square tube precision component, improving clamping effectiveness and safety.

[0047] In an optional embodiment, a third bolt hole 11 is provided at both ends of the upper part of the two inner clamping mounting side plates 6, and a fourth bolt hole 12 that is compatible with the third bolt hole 11 is provided on the mounting plate 1; the inner clamping mounting side plates 6 are fixedly connected to the mounting plate 1 through a second fixing bolt 13 and the third bolt hole 11, and the second fixing bolt 13 is passed through the fourth bolt hole 12.

[0048] In this embodiment, third bolt holes 11 are provided at both ends of the upper portion of the inner clamping mounting side plate 6, which cooperate with fourth bolt holes 12 on the mounting plate 1 to secure the inner clamping mounting side plate 6 to the lower portion of the mounting plate 1. This bolt connection ensures a secure connection between the inner clamping mounting side plate 6 and the mounting plate 1, capable of withstanding tension and gravity during lifting.

[0049] Second fixing bolts 13 are inserted through third and fourth bolt holes 11, 12 to securely connect the inner clamping mounting side plate 6 to the mounting plate 1. This connection method is simple and reliable, facilitating installation and removal. During lifting, second fixing bolts 13 can withstand significant tension, ensuring the overall stability of the clamp.

[0050] In an optional embodiment, a plurality of weight-reducing through holes 14 are provided on the mounting plate 1 , and a fixing hole adapted to the lifting ring 3 is provided on the mounting plate 1 , and the lower end of the lifting ring 3 is fixed in the fixing hole.

[0051] In this embodiment, the weight-reducing through-holes 14 are primarily provided to reduce the weight of the mounting plate 1. While maintaining the strength of the mounting plate 1, reducing unnecessary weight reduces the weight of the entire clamping fixture, facilitating handling and operation while also reducing the burden on the lifting equipment. Optionally, the shape and distribution of the weight-reducing through-holes 14 can be optimized based on actual needs, such as using circular, elliptical, or polygonal through-holes, and rationally arranged to achieve optimal weight reduction.

[0052] The fixing holes are used to install and secure the lifting eye 3. By securing the lower end of the lifting eye 3 in the fixing holes, the connection between the lifting eye 3 and the mounting plate 1 is secure and reliable, ensuring stable transmission of lifting force during lifting. Alternatively, various fixing methods can be used to connect the lifting eye 3 and the fixing holes, such as welding, threading, or high-strength bolts. Bushings or reinforcement rings can also be installed in the fixing holes to improve their wear resistance and strength, extending their service life.

[0053] In an optional embodiment, a self-lubricating bushing is sleeved on the outer side of the first fixing bolt 5 .

[0054] In the clamping fixture, a self-lubricating bushing is sleeved around the outside of the first fixing bolt 5, which secures the fixture's protective pressure gasket 4 and the inner clamping mounting side panel assembly. The self-lubricating bushing primarily reduces frictional resistance during bolt tightening and use, making installation and removal of the bolt smoother. Furthermore, the self-lubricating bushing reduces wear between the bolt and precision parts such as hollow square tubes, extending the service life of the bolt and the clamping fixture. When clamping precision parts such as hollow square tubes, which may require multiple bolt adjustments and tightening, the self-lubricating bushing improves operational convenience and efficiency.

[0055] The clamping fixture provided in this embodiment is used for lifting precision parts such as hollow square tubes. First, the mounting plate 1 serves as the foundation of the entire fixture. The lifting ring 3 above is used to connect to the lifting equipment, and the lifting force is transmitted through the mounting plate 1. The inner clamping fixture body 2, fixed below the mounting plate 1, is the key structure for clamping parts.

[0056] The inner clamping mounting side plate assembly and the clamp protection and pressure gasket 4 within the inner clamping fixture body 2 work in tandem. The inner clamping mounting side plate assembly's two parallel and symmetrical inner clamping mounting side plates 6, fixed beneath the mounting plate 1, provide a stable support structure for clamping. During clamping, at least two clamp protection and pressure gaskets 4 are secured to either side of the inner clamping mounting side plate assembly via first fixing bolts 5, creating a space between the inner clamping mounting side plate assembly and the clamp protection and pressure gasket 4 for securing precision parts such as hollow square tubes.

[0057] During this process, the self-lubricating bushing sleeved on the outside of the first fixing bolt 5 reduces the friction resistance of the bolt during tightening and use, making the installation and removal of the bolt smoother, reducing wear and tear, and ensuring good operability of the clamp.

[0058] The first bolt hole 7 on the inner clamp mounting side plate 6 mates with the second bolt hole 8 on the clamp's protective pressure gasket 4, ensuring that the first fixing bolt 5 accurately secures the two, stabilizing the clamping structure. Threaded bushings can also be installed in the bolt holes to enhance connection strength, or bolt holes of varying sizes can be provided to improve the clamp's versatility.

[0059] The first clamp protection rubber gasket 9 on the outside of the two inner clamping mounting side panels 6 provides cushioning during clamping, reducing impact and wear on the external structure. Rubber gaskets of varying hardness or with anti-slip patterns can be selected to suit different needs. The second clamp protection rubber gasket 10 on the inside prevents direct hard contact between the side panels and precision parts such as hollow square tubes, preventing scratches on the part surface and ensuring a more even distribution of the clamping force.

[0060] The inner clamping mounting side plate 6 cooperates with the fourth bolt hole 12 on the mounting plate 1 through the third bolt holes 11 at both ends of the upper portion, and the inner clamping mounting side plate 6 is firmly connected to the bottom of the mounting plate 1 using the second fixing bolts 13 to ensure that the entire clamp structure is stable during the lifting process and can withstand tension and gravity.

[0061] The weight-reducing holes 14 on the mounting plate 1 reduce the weight of the fixture while ensuring strength, making it easier to carry and operate, and also reducing the burden on the lifting equipment. The fixing holes on the mounting plate 1 that match the lifting ring 3 firmly fix the lower end of the lifting ring 3, allowing the lifting force to be stably transmitted to the mounting plate 1 through the lifting ring 3.

[0062] During the actual clamping process, the clamp protection pressing pad 4 disperses the clamping force, avoids single-point stress concentration, and prevents the parts from breaking or being damaged. In this way, the entire clamping fixture firmly clamps the hollow square tube precision parts to achieve safe lifting.

[0063] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any modifications, equivalent replacements and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the protection scope of the present invention.

Claims

1. A clamping fixture for hollow square tube precision parts, characterized in that: It comprises a mounting plate (1) and an inner clamping fixture body (2); A lifting ring (3) is fixed above the mounting plate (1), and the inner clamping fixture body (2) is fixed below the mounting plate (1); The inner clamping fixture body (2) is provided with an inner clamping mounting side plate assembly and a fixture protection and compression gasket (4); the fixture protection and compression gasket (4) is provided with at least two pieces, and the two pieces of the fixture protection and compression gasket (4) are respectively located on both sides of the inner clamping mounting side plate assembly, and the two pieces of the fixture protection and compression gasket (4) are fixedly connected to the inner clamping mounting side plate assembly through a first fixing bolt (5); The inner clamping mounting side plate assembly and the clamp protection pressing gasket (4) are used to fix hollow square tube precision parts.

2. The clamping fixture according to claim 1, characterized in that The inner clamping mounting side plate assembly is provided with two inner clamping mounting side plates (6), and the two inner clamping mounting side plates (6) are arranged in parallel and symmetrically fixed below the mounting plate (1).

3. The clamping fixture according to claim 2, characterized in that The left and right ends of the inner clamping mounting side plate (6) are provided with first bolt holes (7) adapted to the first fixing bolt (5), and the left and right ends of the clamp protection pressing gasket (4) are provided with second bolt holes (8) adapted to the first fixing bolt (5).

4. The clamping fixture according to claim 2, characterized in that A first clamp protection rubber gasket (9) is fixed to the outer sides of the two inner clamp installation side plates (6), and a second clamp protection rubber gasket (10) is fixed to the inner side of the inner clamp installation side plates (6).

5. The clamping fixture according to claim 2, characterized in that The upper ends of the two inner clamping mounting side plates (6) are each provided with a third bolt hole (11), and the mounting plate (1) is provided with a fourth bolt hole (12) adapted to the third bolt hole (11); The inner clamping mounting side plate (6) is fixedly connected to the mounting plate (1) via a second fixing bolt (13) and the third bolt hole (11), and the second fixing bolt (13) is passed through the fourth bolt hole (12).

6. The clamping fixture according to claim 1, wherein: The mounting plate (1) is provided with a plurality of weight-reducing through holes (14), and the mounting plate (1) is provided with a fixing hole adapted to the lifting ring (3), and the lower end of the lifting ring (3) is fixed in the fixing hole.

7. The clamping fixture according to claim 1, wherein: A self-lubricating bushing is sleeved on the outer side of the first fixing bolt (5).

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