Composite clamping jaw device

Abstract

The utility model discloses a composite clamping jaw device which comprises an installation frame, a bidirectional driver, two sets of installation supports, two clamping arms and two sets of hinged shaft sliding swing rod mechanisms, wherein the bidirectional driver and the two sets of installation supports are arranged on the installation frame in a supported mode. The two-way driver is provided with two telescopic driving ends, and the two installation supports are arranged on the two sides of the two-way driver respectively. The connecting ends of the two clamping arms are connected with the two mounting supports correspondingly, and the clamping ends of the two clamping arms reversely stretch out of the mounting frame, then are suspended and are opposite. The power input ends of the two sets of hinged shaft sliding swing rod mechanisms are connected with the two telescopic driving ends of the two-way driver correspondingly, and the power output ends of the two sets of hinged shaft sliding swing rod mechanisms are connected with the two mounting supports correspondingly. The linear telescopic movement of the bidirectional driver in the axial direction is converted into the opening and closing rotation movement of the two clamping arms around the fixed shaft through the two sets of installation supports. According to the novel clamping device, to-be-clamped objects with different shapes and sizes can be clamped, and the novel clamping device is simple and light in overall structure and well suitable for some environments with limited spaces and large sizes of the to-be-clamped objects.

Description

Technical Field

[0001] The utility model relates to the technical field of robot grippers, and particularly to a composite gripper device. Background Art

[0002] The gripper mechanism generally includes a gripper body, a driving device (such as a cylinder, a motor, etc.), a transmission mechanism (such as a connecting rod, a gear, etc.), and a sensor, etc. Its working principle is: the driving device provides power, and the power is transmitted to the gripper body through the transmission mechanism, so that the gripper realizes the opening and closing actions, thereby grasping or releasing an object.

[0003] The gripper mechanism is mainly used in various industrial automation scenarios to replace manual labor to complete operations such as grasping, transporting, and assembling objects, which can improve production efficiency and ensure the accuracy and stability of operations. For example, in the patent CN220074735U, a high-load-capacity manipulator gripper, and the patent CN218518667U, a clamping device and a clamping equipment.

[0004] The existing gripper mechanisms generally have some disadvantages or problems. For example:

[0005] 1. Limited grasping adaptability: For objects with complex shapes, special sizes, or different surface characteristics, it may not be able to grasp well, or different types of grippers need to be replaced.

[0006] 2. High difficulty in controlling the clamping force: It is difficult to accurately control the clamping force, which may cause damage to the object or insecure grasping.

[0007] 3. Precision problems: In some occasions with extremely high precision requirements, there may be certain errors. Especially when there are more than two drivers and gripper heads, it is difficult to ensure the action synchronization.

[0008] 4. Speed and response: In some cases, its action speed and response may not be fast enough, affecting the work efficiency.

[0009] 5. Maintenance cost: It includes a complex mechanical structure and may require regular maintenance and component replacement, increasing the cost.

[0010] 6. Weight and volume: The relatively large weight and volume may limit its application in some environments with limited space. Summary of the Utility Model

[0011] The utility model provides a composite gripper device to solve the technical problems existing in the existing gripper mechanisms, such as complex shapes, large weight and volume, and poor adaptability to objects with different outer dimensions to be gripped.

[0012] The technical scheme adopted by the utility model is as follows:

[0013] A composite jaw device, comprising: a mounting bracket for connecting with a manipulator, a bidirectional driver and two groups of mounting supports provided on the mounting bracket, two jaws for relatively clamping an object to be clamped, and two groups of hinge shaft sliding swing rod mechanisms for respectively driving the two jaws to act; the bidirectional driver has two relatively arranged telescopic driving ends, and the two mounting supports are respectively arranged on both sides of the two telescopic driving ends of the bidirectional driver; the connecting ends of the two jaws are respectively connected with the two mounting supports, and the clamping ends of the two jaws extend out of the mounting bracket in the opposite direction and are suspended and relatively arranged; the power input ends of the two groups of hinge shaft sliding swing rod mechanisms are respectively connected with the two telescopic driving ends of the bidirectional driver, and the power output ends of the two groups of hinge shaft sliding swing rod mechanisms are respectively connected with the two mounting supports, so as to convert the linear telescopic movement of the bidirectional driver along the axial direction into the opening and closing rotational movement of the two jaws around a fixed axis through the two groups of mounting supports.

[0014] Further, the mounting bracket includes a first mounting plate, the two groups of mounting supports are respectively arranged at both ends of the first mounting plate, and each mounting support includes: two relatively spaced and vertically provided plates on the first mounting plate, and a rotating shaft located between the two plates and passing through the two plates at both ends; the power output end of the hinge shaft sliding swing rod mechanism is connected with the rotating shaft of the corresponding mounting support; the connecting end of the jaw is also fixed to both ends of the rotating shaft on the corresponding side.

[0015] Further, the hinge shaft sliding swing rod mechanism includes a hinge shaft and a slider, and a swing rod vertically connected to the rotating shaft; the slider is slidably mounted on the outer circle of the swing rod; one end of the hinge shaft is hinged to the slider, and the other opposite end is fixedly connected to the telescopic driving end on the corresponding side of the bidirectional driver along the axial direction.

[0016] Further, the hinge shaft sliding swing rod mechanism further includes a mounting sleeve for reducing friction during sliding, the mounting sleeve is slidably mounted on the outer circle of the swing rod, and the slider is fixedly mounted on the mounting sleeve.

[0017] Further, the hinge shaft sliding swing rod mechanism further includes a spherical plain bearing for automatically adjusting the installation and manufacturing errors of the two plates, and the spherical plain bearing is installed between the swing rod and the rotating shaft.

[0018] Further, the jaw includes a connecting arm and a chuck; the connecting end of the connecting arm is fixed to both ends of the rotating shaft of the corresponding mounting support, and the clamping end of the connecting arm is detachably connected to the chuck.

[0019] Further, the connecting arm includes two spaced and "C"-shaped arm rods, and a connecting rod connected between the two arm rods; the connecting ends of the two arm rods are respectively fixed to both ends of the rotating shaft, and the clamping ends of the two arm rods extend around the end of the first mounting plate in the opposite direction and are detachably connected to the chuck.

[0020] Further, the chuck is strip-shaped and is arranged to match the object to be clamped, so as to stably clamp the object to be clamped.

[0021] Furthermore, the mounting bracket further includes a plurality of struts that are circumferentially spaced along the circumference of the bidirectional driver and vertically supported on the first mounting plate, a second mounting plate fixed to the tops of the plurality of struts, and a third mounting plate that is arranged in parallel and spaced apart from the second mounting plate; the composite jaw device further includes a weighing device connected between the third mounting plate and the second mounting plate, and the weighing device and the bidirectional driver are respectively connected to the controller of the manipulator; the third mounting plate is used for detachably fixing to the manipulator.

[0022] Furthermore, a plurality of mounting holes that penetrate through the plate surface and are in a kidney shape or a gourd shape are further formed on the first mounting plate for adjustably mounting heat preservation covers with different sizes of objects to be clamped.

[0023] The utility model has the following beneficial effects:

[0024] For the composite jaw device of the utility model, due to the adoption of a bidirectional driver that can expand and contract bidirectionally and combined with two hinge shaft sliding swing rod mechanisms with special structural movements, the telescopic movement of the bidirectional driver along the axial direction is first converted into a linear telescopic movement and then into a rotational movement around a fixed axis and output. Thus, through the combination of linear expansion and contraction + rotation around a fixed axis, a relatively small volume of the device can achieve a large range of opening and closing of the two clamping arms. Therefore, it can not only clamp objects with different shapes and volumes, such as ingot molds for casting ingots, mold upper covers, heat preservation covers, etc., with a wide range of applications, but also the overall structure of the device is simple and light, with low manufacturing costs, convenient for installation and connection with the manipulator, and is well applicable to some environments with limited space but large volumes of objects to be clamped.

[0025] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:

[0027] Figure 1 is a schematic spatial structure diagram of the composite jaw device of the preferred embodiment of the utility model;

[0028] Figure 2 is Figure 1 the partial cross-sectional front view structural diagram of

[0029] Figure 3 is Figure 2 the left view structural diagram of

[0030] Figure 4 is Figure 2Schematic top view structure diagram.

[0031] Legend description:

[0032] 10. Mounting frame; 11. First mounting plate; 111. Mounting hole; 12. Support column; 13. Second mounting plate; 14. Third mounting plate; 20. Bidirectional driver; 30. Mounting support; 31. Support plate; 32. Rotating shaft; 40. Clamping arm; 41. Connecting arm; 42. Clamping head; 50. Hinge shaft sliding swing rod mechanism; 51. Hinge shaft; 52. Slide block; 53. Swing rod; 54. Spherical plain bearing; 60. Weighing device. Specific implementation mode

[0033] The following will describe in detail the embodiments of the present invention with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the following.

[0034] Refer to Figure 1 and Figure 2 According to the preferred embodiments of the present invention, a composite jaw device is provided, including: a mounting frame 10 for connecting with a manipulator, a bidirectional driver 20 and two groups of mounting supports 30 supported on the mounting frame 10, two clamping arms 40 for relatively clamping an object to be clamped, and two groups of hinge shaft sliding swing rod mechanisms 50 for respectively driving the two clamping arms 40 to act. The bidirectional driver 20 has two oppositely arranged telescopic driving ends, and the two mounting supports 30 are respectively arranged on both sides of the two telescopic driving ends of the bidirectional driver 20. The connecting ends of the two clamping arms 40 are respectively connected to the two mounting supports 30, and the clamping ends of the two clamping arms 40 extend out of the mounting frame 10 in the opposite direction and are suspended and oppositely arranged. The power input ends of the two groups of hinge shaft sliding swing rod mechanisms 50 are respectively connected to the two telescopic driving ends of the bidirectional driver 20, and the power output ends of the two groups of hinge shaft sliding swing rod mechanisms 50 are respectively connected to the two mounting supports 30, so as to convert the linear telescopic movement of the bidirectional driver 20 along the axis into the opening and closing rotational movement of the two clamping arms 40 around a fixed axis through the two groups of mounting supports 30.

[0035] When the composite jaw device of the present utility model works, the bidirectional driver 20 first acts to make the telescopic drive ends at both ends thereof extend outward or shorten inward simultaneously along the axis. Then, through the action of two groups of hinge shaft sliding swing rod mechanisms 50, the telescopic actions of the two telescopic drive ends at both ends of the bidirectional driver 20 are first converted into linear telescopic motions along the axis, and then through the action of two groups of mounting brackets 30, the linear telescopic motion is converted into a rotational motion that makes the two clamping arms 40 rotate around the fixed axis connected to the corresponding mounting bracket 30 to open and close, so that the two clamping arms 40 relatively close around the fixed axis to clamp the object to be clamped or relatively open to release the object to be clamped, realizing the grasping and releasing operations of the object to be clamped. For the composite jaw device of the present utility model, since a bidirectional driver 20 that can telescopically move in two directions is adopted and combined with two groups of hinge shaft sliding swing rod mechanisms 50 with special structural actions, the telescopic motion of the bidirectional driver 20 along the axis is first converted into a linear telescopic motion and then into a rotational motion around the fixed axis and output. Thus, through the combination of linear telescopic motion + rotational motion around the fixed axis, a relatively large range of opening and closing of the two clamping arms 40 can be achieved with a relatively small volume of the device. Therefore, it can not only clamp objects with different shapes and volumes, such as ingot casting molds, mold upper covers, heat preservation covers, etc. used for casting ingots, with a wide application range, but also the overall structure of the device is simple, light, with low manufacturing cost, easy to be installed and connected with a manipulator, and is well applicable to some environments with limited space but relatively large volume of the object to be clamped.

[0036] Optionally, as Figures 1-3 shown, the mounting frame 10 includes a first mounting plate 11. Two groups of mounting brackets 30 are respectively arranged at both ends of the first mounting plate 11, and each mounting bracket 30 includes: two support plates 31 that are relatively spaced apart and vertically supported on the first mounting plate 11, and a rotating shaft 32 that is located between the two support plates 31 and passes through the two support plates 31 at both ends. The power output end of the hinge shaft sliding swing rod mechanism 50 is connected to the rotating shaft 32 of the corresponding side mounting bracket 30. The connecting end of the clamping arm 40 is also fixed to both ends of the rotating shaft 32 of the corresponding side. When working, the hinge shaft sliding swing rod mechanism 50 converts the axial telescopic motion of the bidirectional driver 20 into a linear telescopic motion and then transmits it to the rotating shaft 32 to make the rotating shaft 32 rotate. The rotating shaft 32 then drives the connected clamping arm 40 to perform a reciprocating deflection motion around the rotating shaft 32, so that the axial telescopic motion of the bidirectional driver 20 is finally converted into a deflection motion of the clamping arm 40 around the fixed axis.

[0037] Optionally, as Figures 1-3As shown, the hinge shaft sliding swing rod mechanism 50 includes a hinge shaft 51, a slider 52, and a swing rod 53 vertically connected to the rotating shaft 32. The slider 52 is slidably mounted on the outer circle of the swing rod 53. One end of the hinge shaft 51 is hinged to the slider 52, and the opposite end is fixedly connected to the telescopic driving end of the corresponding side of the bidirectional driver 20 along the axial direction. During operation, the telescopic driving end of the bidirectional driver 20 expands and contracts, thereby driving the fixedly connected hinge shaft 51 to translate linearly. When the hinge shaft 51 translates linearly, it will drive the slider 52 to slide on the swing rod 53. When the slider 52 slides on the swing rod 53, it will drive the rotating shaft 32 to rotate relative to the two support plates 31. Furthermore, when the rotating shaft 32 rotates, it will drive the connected clamping arms 40 to deflect with the rotating shaft 32 as the fixed axis. Thus, the relative deflection of the two clamping arms 40 forms the clamping and releasing of the object to be clamped.

[0038] In the device of the present utility model, for the bidirectional driver 20 - hinge shaft sliding swing rod mechanism 50 - clamping arm 40, linear bearings and rolling bearings are adopted throughout the entire transmission path. Therefore, the mechanism has high matching precision, making the device have high action precision, easy to control the clamping force, and high stability. Except for bearing lubrication and maintenance, there are no other cumbersome usage and maintenance requirements, and the usage cost is low, and the entire device has a simple structure; for the hinge shaft sliding swing rod mechanism 50 of the present utility model, by using the lever principle with the rotating shaft 32 as the fulcrum, by changing the length of the hinge shaft 51, the large-stroke opening and closing or short-distance precise opening and closing of the clamping arm 40 can be achieved, so as to adapt to objects to be clamped with different outer dimensions, and this structural setting also makes the action response speed fast, thereby improving the work efficiency.

[0039] Preferably, the hinge shaft sliding swing rod mechanism 50 further includes a mounting sleeve for reducing friction during sliding. The mounting sleeve is slidably mounted on the outer circle of the swing rod 53, and the slider 52 is fixedly mounted on the mounting sleeve; in this preferred solution, the setting of the mounting sleeve formed by a plastic material reduces the hard friction between the slider 52 and the swing rod 53 on the one hand, improves the service life and movement precision of the swing rod 53 and the slider 52, and on the other hand, facilitates disassembly and replacement of a new mounting sleeve, thereby reducing the maintenance cost and the difficulty of maintenance operations.

[0040] Preferably, as Figure 3 shown, the hinge shaft sliding swing rod mechanism 50 further includes a spherical plain bearing 54 for automatically adjusting the installation and manufacturing errors of the two support plates 31. The spherical plain bearing 54 is installed between the swing rod 53 and the rotating shaft 32. In this preferred solution, due to the manufacturing and installation errors of the two support plates 31, the swing rod 53 may not be vertically connected to the rotating shaft 32, which may lead to force transmission obstacles and make the deflection of the clamping arm 40 not smooth or deviate. Therefore, a spherical plain bearing 54 is installed between the swing rod 53 and the rotating shaft 32 to absorb the unbalance caused by the installation and manufacturing errors of the two support plates 31, improve the precision of force transmission, and ultimately improve the movement precision of the clamping arm 40.

[0041] Optionally, as Figure 1and Figure 3 As shown in Figure 3 , the clamping arm 40 includes a connecting arm 41 and a chuck 42. The connecting end of the connecting arm 41 is fixed to both ends of the rotating shaft 32 of the corresponding mounting support 30, and the clamping end of the connecting arm 41 is detachably connected to the chuck 42.

[0042] In this alternative solution, combined with Figure 2 As shown in Figure 2 , the connecting arm 41 includes two arm rods arranged at intervals and both having a "C"-shaped cross-section, and a connecting rod connected between the two arm rods. The connecting ends of the two arm rods are respectively fixed to both ends of the rotating shaft 32, and the clamping ends of the two arm rods are wound around the end of the first mounting plate 11 in the opposite direction and then detachably connected to the chuck 42. In this alternative solution, the structure of the connecting arm 41 is arranged in such a way that on the one hand, it is convenient for its installation to avoid interference with the first mounting plate 11, and on the other hand, it is convenient to extend the width of its clamping end in the width direction, thereby extending the width of the chuck 42 to increase the clamping area of the chuck 42, so as to stably clamp the object to be clamped; on the other hand, the chuck 42 is detachably connected to the connecting arm 41, so that the corresponding chuck 42 can be replaced according to the shape of different objects to be clamped. The replacement operation is simple, and the clamping arm 40 can be compatible with the picking and placing operations of objects with various different shapes without changing the type and adjustment, having excellent grasping adaptability and stably clamping the object to be clamped.

[0043] Preferably, the chuck 42 is strip-shaped and is arranged to match the object to be clamped to stably clamp the object to be clamped.

[0044] Optionally, as Figure 1 and 2As shown in the figure, the mounting bracket 10 further includes a plurality of struts 12 that are circumferentially spaced along the circumference of the bidirectional driver 20 and vertically supported on the first mounting plate 11, a second mounting plate 13 fixed to the tops of the plurality of struts 12, and a third mounting plate 14 that is arranged parallel and spaced apart from the second mounting plate 13. The composite jaw device further includes a weighing device 60 connected between the third mounting plate 14 and the second mounting plate 13. The weighing device 60 and the bidirectional driver 20 are respectively connected to the controller of the manipulator. The third mounting plate 14 is used for detachably fixing to the manipulator. During operation, the third mounting plate 14 is connected to the manipulator, and the third mounting plate 14 is also connected to the second mounting plate 13 through the weighing device 60, as well as the bidirectional driver 20, the hinge shaft sliding swing rod mechanism 50, and the jaw arm 40. When the jaw arm 40 successfully grabs the object to be grabbed, the weight of the object to be grabbed is transmitted to the weighing device 60 through the jaw arm 40, the first mounting plate 11, the struts 12, and the second mounting plate 13. The weighing device 60 then transmits the weight data to the controller of the manipulator, and the manipulator operates normally. When the jaw arm 40 performs a grabbing action but the weighing device 60 does not receive the weight information of the object to be grabbed, it means that although the jaw arm 40 has performed a grabbing operation but has not successfully grabbed the object to be grabbed. Therefore, the controller re-drives the bidirectional driver 20 to act according to the information fed back by the weighing device 60 so that the jaw arm 40 grabs the object to be grabbed again. Thus, through the setting of the weighing device 60, the accuracy of the grabbing operation of the jaw arm 40 is improved, and empty grabbing is avoided.

[0045] In this alternative solution, as Figure 4 shown, the first mounting plate 11 is further provided with a plurality of mounting holes 111 that penetrate the plate surface and are in a waist shape or a gourd shape for adjustably mounting heat preservation covers of different sizes for the object to be grabbed; during operation, by adjusting the fixing position of the fastener in the mounting holes 111, the mounting position of the heat preservation cover can be finely adjusted to adapt to the installation of heat preservation covers of different sizes.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A composite jaw device, characterized in that, Comprising: A mounting bracket (10) for connecting with a manipulator, a bidirectional driver (20) supported on the mounting bracket (10), two groups of mounting supports (30), two clamping arms (40) for relatively clamping an object to be clamped, and two groups of hinge-axis sliding swing rod mechanisms (50) for respectively driving the two clamping arms (40) to act; The bidirectional driver (20) has two relatively arranged telescopic driving ends, and the two mounting supports (30) are respectively arranged on both sides of the two telescopic driving ends of the bidirectional driver (20); The connecting ends of the two clamping arms (40) are respectively connected to the two mounting supports (30), and the clamping ends of the two clamping arms (40) extend out of the mounting bracket (10) in the opposite direction and are suspended and relatively arranged; The power input ends of the two groups of hinge-axis sliding swing rod mechanisms (50) are respectively connected to the two telescopic driving ends of the bidirectional driver (20), and the power output ends of the two groups of hinge-axis sliding swing rod mechanisms (50) are respectively connected to the two mounting supports (30), so as to convert the linear telescopic motion of the bidirectional driver (20) along the axial direction into the opening and closing rotational motion of the two clamping arms (40) around a fixed axis through the two groups of mounting supports (30).

2. The composite jaw device according to claim 1, wherein The mounting bracket (10) includes a first mounting plate (11), the two groups of mounting supports (30) are respectively arranged at both ends of the first mounting plate (11), and each mounting support (30) includes: Two relatively spaced and vertically supported plates (31) on the first mounting plate (11), and a rotating shaft (32) located between the two support plates (31) and passing through the two support plates (31) at both ends; The power output end of the hinge-axis sliding swing rod mechanism (50) is connected to the rotating shaft (32) of the corresponding mounting support (30); The connecting end of the clamping arm (40) is also fixed to both ends of the corresponding rotating shaft (32).

3. The composite jaw device according to claim 2, wherein The hinge-axis sliding swing rod mechanism (50) includes a hinge shaft (51) and a slider (52), and a swing rod (53) vertically connected to the rotating shaft (32); The slider (52) is slidably mounted on the outer circle of the swing rod (53); One end of the hinge shaft (51) is hinged to the slider (52), and the opposite end is fixedly connected to the telescopic driving end of the corresponding side of the bidirectional driver (20) along the axial direction.

4. The composite jaw device according to claim 3, wherein The hinge-axis sliding swing rod mechanism (50) further includes a mounting sleeve for reducing friction and sliding, the mounting sleeve is slidably mounted on the outer circle of the swing rod (53), and the slider (52) is fixedly mounted on the mounting sleeve.

5. The composite jaw device according to claim 2, wherein The hinge-axis sliding swing rod mechanism (50) further includes a spherical plain bearing (54) for automatically adjusting the installation and manufacturing errors of the two support plates (31), and the spherical plain bearing (54) is installed between the swing rod (53) and the rotating shaft (32).

6. The composite jaw device according to claim 2, wherein The clamping arm (40) includes a connecting arm (41) and a chuck (42); The connecting ends of the connecting arms (41) are fixed to both ends of the rotating shafts (32) of the corresponding mounting supports (30), and the clamping ends of the connecting arms (41) are detachably connected to the chucks (42).

7. The composite jaw device according to claim 6, wherein The connecting arm (41) includes two arm rods arranged at intervals and having a "C"-shaped cross section, and a connecting rod connected between the two arm rods; The connecting ends of the two arm rods are respectively fixed to both ends of the rotating shaft (32), and the clamping ends of the two arm rods are wound around the end of the first mounting plate (11) in the opposite direction and then detachably connected to the chuck (42).

8. The composite jaw device according to claim 6, wherein The chuck (42) is strip-shaped and is arranged to match the object to be clamped, so as to stably clamp the object to be clamped.

9. The composite jaw device according to claim 2, wherein The mounting frame (10) further includes a plurality of support columns (12) arranged at intervals along the circumference of the bidirectional driver (20) and vertically supported on the first mounting plate (11), a second mounting plate (13) fixed to the tops of the plurality of support columns (12), and a third mounting plate (14) arranged in parallel and at intervals with the second mounting plate (13); The composite jaw device further includes a weighing device (60) connected between the third mounting plate (14) and the second mounting plate (13), and the weighing device (60) and the bidirectional driver (20) are respectively connected to the controller of the manipulator; The third mounting plate (14) is used for detachable fixation with the manipulator.

10. The composite jaw device according to claim 2, wherein The first mounting plate (11) is further provided with a plurality of mounting holes penetrating through the plate surface and having a kidney-shaped or gourd-shaped cross section, so as to be used for adjustably mounting heat insulation covers of different sizes for the object to be clamped.

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