A clamping device for a cylinder head

Abstract

The application provides a pressing device and a cylinder head cover clamp with the same, and relates to the technical field of automobile accessory machining. The pressing device is used for pressing a cylinder head cover placed on a base of the cylinder head cover clamp. The pressing device comprises a power assembly, a hinged support, a pressing rod and a rotating arm. The power assembly and the hinged support are arranged on the base. The second end of the pressing rod is pivotally connected with the power assembly. The two ends of the rotating arm are respectively pivotally connected with the hinged support and the middle part of the pressing rod. The power assembly can provide power for the pressing rod. When the pressing rod rotates to a loosening position, the projection of the pressing rod on a horizontal plane does not coincide with the cylinder head cover. When the pressing rod rotates to a pressing position, the first end of the pressing rod abuts against the surface of the cylinder head cover. According to the pressing device and the cylinder head cover clamp with the same, the cylinder head cover does not need to be moved horizontally or to avoid the shielding structure when being taken or placed, so that the collision risk is avoided, and the operation efficiency and safety are improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts processing technology, and in particular to a clamping device and a cylinder head cover clamp having the same. Background Technology

[0002] When machining the cylinder head cover, it needs to be fixed by a cylinder head cover fixture. The base of the cylinder head cover fixture has machining holes corresponding to the position of the cylinder head cover. A machining tool is provided below the cylinder head cover fixture. The machining tool passes through the machining holes to machine the underside of the cylinder head cover.

[0003] Fixing the cylinder head cover to the cylinder head cover fixture requires a clamping device. Current clamping devices have a small rotation angle between the clamping and releasing positions. When the clamping device rotates to the releasing position, part of its structure obstructs the cylinder head cover from above. Therefore, when the cylinder head cover is removed after processing, it is prone to colliding with the clamping device, causing damage. Furthermore, because the clamping device obstructs the cylinder head cover, when placing the cylinder head cover material onto the base for processing, the material must first be moved laterally from the space between the clamping device and the base to its corresponding position on the base before being placed on the base. Correspondingly, when removing the processed cylinder head cover, it must be lifted from the base and then laterally removed from the space between the clamping device and the base, resulting in low processing efficiency. Utility Model Content

[0004] The purpose of this application is to address the above problems by providing a clamping device and a cylinder head cover clamp having the same, which eliminates the need for lateral movement or avoidance of obstructing structures when picking up or putting down the cylinder head cover, thereby avoiding the risk of collision and improving operational efficiency and safety.

[0005] In a first aspect, this application provides a clamping device for clamping a cylinder head cover placed on a base of a cylinder head cover clamp. The clamping device includes a power assembly, a hinge support, a clamping rod, and a rotating arm. The power assembly and the hinge support are both disposed on the base. The second end of the clamping rod is pivotally connected to the power assembly. The two ends of the rotating arm are pivotally connected to the hinge support and the middle of the clamping rod, respectively. The power assembly can provide power to the clamping rod to make the clamping rod rotate around the hinge support between a clamping position and a releasing position. When the clamping rod rotates to the releasing position, the projection of the clamping rod and the cylinder head cover on the horizontal plane does not coincide. When the clamping rod rotates to the clamping position, the first end of the clamping rod abuts against the surface of the cylinder head cover.

[0006] According to the technical solutions provided in certain embodiments of this application, the hinge support is located between the power assembly and the cylinder head cover. The clamping rod includes a pressing rod, a main rod, and a power rod connected in sequence. The pressing rod has a first end, and the power rod has a second end. The pressing rod extends toward the cylinder head cover, and there is a first angle between the extension direction of the pressing rod and the extension direction of the main rod. The power rod extends toward the power assembly, and there is a second angle between the extension direction of the power rod and the extension direction of the main rod. Both the first angle and the second angle are greater than 90°.

[0007] According to the technical solutions provided in certain embodiments of this application, there is a third included angle between the extension direction of the rotating arm and the extension direction of the main rod, and the third included angle is greater than 90°.

[0008] According to the technical solutions provided in certain embodiments of this application, the power assembly includes: a cylinder, the telescopic rod of which can extend and retract in the vertical direction; a movable frame, the upper end of which is connected to the telescopic rod of the cylinder to reciprocate in the vertical direction, and the lower part of which is pivotally connected to the second end; when the clamping rod is in the loosened position, the height of the pivot connection between the lower part of the movable frame and the second end is lower than the height of the pivot connection between the rotating arm and the hinge support.

[0009] According to the technical solutions provided in some embodiments of this application, the pressing device further includes: a pressing component, which is detachably disposed at the first end.

[0010] According to the technical solutions provided in certain embodiments of this application, an assembly groove is provided on the side of the first end facing the cylinder head cover, and the pressing component is detachably disposed to the assembly groove.

[0011] According to the technical solutions provided in certain embodiments of this application, the end of the first end is provided with a first through hole that passes through the assembly groove, the pressing component is provided with a second through hole, and the pressing device further includes: a fixing bolt, the fixing bolt passing through the first through hole and the second through hole in sequence to connect the pressing component to the first end.

[0012] According to the technical solutions provided in certain embodiments of this application, a through hole is provided on the surface of the first end facing away from the cylinder head cover, and the clamping device further includes: a set screw, which abuts against the fixing bolt through the through hole.

[0013] According to the technical solutions provided in certain embodiments of this application, the pressing assembly includes: a rotating seat, the rotating seat having a second through hole, and a gap between the rotating seat and the inner wall of the assembly groove; two pressing blocks, the two pressing blocks being spaced apart from each other and disposed on the rotating seat so as to abut against the cylinder head cover when the pressing rod is in the pressing position.

[0014] Secondly, this application provides a cylinder head cover clamp, comprising: a base capable of supporting the cylinder head cover; two clamping devices, wherein the clamping devices are the clamping devices described in any of the first aspects above, both clamping devices are disposed on the base, and the two clamping devices are respectively located on both sides of the cylinder head cover.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: When the clamping rod rotates to the released position, the projection of the clamping rod and the cylinder head cover on the horizontal plane do not coincide. That is, the clamping rod is completely detached from the area above the cylinder head cover when in the released position, preventing the clamping device from obstructing the cylinder head cover. Therefore, there is no need to move laterally or avoid obstructing structures when picking up or putting down the cylinder head cover, avoiding the risk of collision and improving operational efficiency and safety. When the clamping rod rotates to the clamping position, the first end of the clamping rod abuts against the surface of the cylinder head cover. The first end of the clamping rod reliably abuts against the surface of the cylinder head cover, ensuring processing stability.

[0016] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1A three-dimensional structural schematic diagram of a cylinder head cover clamp provided in an embodiment of this application; Figure 2 This is a side view of a cylinder head cover clamp provided in an embodiment of this application, where the clamping device is in the detached position; Figure 3 for Figure 2 Enlarged view of section A in the image; Figure 4 A side view of a cylinder head cover clamp provided in an embodiment of this application, showing a first included angle, a second included angle, and a third included angle; Figure 5 This is a side view of a cylinder head cover clamp provided in an embodiment of this application, where the clamping device is in the clamping position; Figure 6 This is a three-dimensional structural diagram of a cylinder head cover clamp provided in an embodiment of this application from another angle.

[0019] The text labels in the image represent: 1000. Cylinder head cover clamp; 100. Clamping device; 110. Power assembly; 111. Cylinder; 112. Movable frame; 120. Hinge support; 130. Clamping rod; 131. Pressing rod; 132. Main rod; 133. Power rod; 134. Assembly slot; 10. First end; 20. Second end; 140. Rotate the arm; 150. Pressing assembly; 151. Rotating seat; 152. Pressing block; 160. Fixing bolt; 170. Set screw; 200. Base; 2000, Cylinder head cover. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this application.

[0021] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0022] As mentioned in the background section, when machining a cylinder head cover, it is necessary to fix the cylinder head cover using a cylinder head cover fixture. The base of the cylinder head cover fixture has machining holes corresponding to the position of the cylinder head cover. A machining tool is provided below the cylinder head cover fixture, and the machining tool passes through the machining holes to machine the underside of the cylinder head cover.

[0023] Fixing the cylinder head cover to the cylinder head cover fixture requires a clamping device. Current clamping devices have a small rotation angle between the clamping and releasing positions. When the clamping device rotates to the releasing position, part of its structure obstructs the cylinder head cover from above. Therefore, when the cylinder head cover is removed after processing, it is prone to colliding with the clamping device, causing damage. Furthermore, because the clamping device obstructs the cylinder head cover, when placing the cylinder head cover material onto the base for processing, the material must first be moved laterally from the space between the clamping device and the base to its corresponding position on the base before being placed on the base. Correspondingly, when removing the processed cylinder head cover, it must be lifted from the base and then laterally removed from the space between the clamping device and the base, resulting in low processing efficiency.

[0024] To address the problems in the prior art, this embodiment provides a clamping device and a cylinder head cover clamp having the same. Through the design of the clamping device 100, the projection of the clamping rod 130 onto the horizontal plane does not coincide with the projection of the cylinder head cover 2000 in the released position, thereby completely removing the obstructing area, avoiding the risk of collision when picking up or placing the cylinder head cover 2000, improving the yield rate of the cylinder head cover 2000, and increasing processing efficiency. Simultaneously, the clamping device 100 has advantages such as structural stability, uniform clamping force, and ease of maintenance.

[0025] The following is in conjunction with the instruction manual appendix. Figures 1-6 This application describes in detail the clamping device and the cylinder head cover clamp having the same.

[0026] like Figure 1As shown, a clamping device 100 is used to clamp a cylinder head cover 2000 placed on a base 200 of a cylinder head cover clamp 1000. The clamping device 100 includes a power assembly 110, a hinge support 120, a clamping rod 130, and a rotating arm 140. The power assembly 110 and the hinge support 120 are both mounted on the base 200. The second end 20 of the clamping rod 130 is pivotally connected to the power assembly 110, and both ends of the rotating arm 140 are pivotally connected to the hinge support 120 and the middle of the clamping rod 130, respectively. Thus, the power assembly 110 can provide power to the clamping rod 130, causing the clamping rod 130 to rotate around the hinge support 120 between a clamped position and a released position.

[0027] like Figure 1 and Figure 2 As shown, the clamping rod 130 is in the loosened position at this time, as... Figure 5 As shown, one of the two clamping rods 130 abuts against the cylinder head cover 2000, thereby placing the clamping rod 130 in the clamping position.

[0028] When the clamping rod 130 rotates to the released position, its projection on the horizontal plane does not coincide with that of the cylinder head cover 2000. This ensures the clamping rod 130 is completely detached from the area above the cylinder head cover 2000 in the released position. Therefore, when removing or placing the cylinder head cover 2000, there is no need for lateral movement or avoidance of obstructions, avoiding collision risks and improving operational efficiency and safety. When the clamping rod 130 rotates to the clamping position, its first end 10 abuts against the surface of the cylinder head cover 2000. The reliable abutment of the first end 10 of the clamping rod 130 against the surface of the cylinder head cover 2000 ensures machining stability.

[0029] According to the clamping device 100 of the first aspect of this application, when the clamping rod 130 is rotated to the released position, the projection of the clamping rod 130 and the cylinder head cover 2000 on the horizontal plane does not coincide. That is, when the clamping rod 130 is in the released position, it is completely detached from the area above the cylinder head cover 2000, preventing the clamping device 100 from obstructing the cylinder head cover 2000. Therefore, when picking up or putting down the cylinder head cover 2000, there is no need to move laterally or avoid obstructing structures, avoiding the risk of collision and improving operational efficiency and safety. When the clamping rod 130 is rotated to the clamping position, the first end 10 of the clamping rod 130 abuts against the surface of the cylinder head cover 2000. The first end 10 of the clamping rod 130 reliably abuts against the surface of the cylinder head cover 2000, ensuring processing stability.

[0030] The rotating arm 140, together with the pressing rod 131, the main rod 132, and the power rod 133 of the pressing rod 130, forms a linkage mechanism, which in turn forms a lever structure and increases the overall rotation angle of the pressing rod 130.

[0031] In some embodiments of this application, the hinge support 120 is located between the power assembly 110 and the cylinder head cover 2000. The clamping rod 130 includes a pressing rod 131, a main rod 132, and a power rod 133 connected in sequence. The pressing rod 131 has a first end 10, and the power rod 133 has a second end 20. The pressing rod 131 extends toward the cylinder head cover 2000, and there is a first angle between the extension direction of the pressing rod 131 and the extension direction of the main rod 132. The power rod 133 extends toward the power assembly 110, and there is a second angle between the extension direction of the power rod 133 and the extension direction of the main rod 132. Both the first angle and the second angle are greater than 90°.

[0032] Specifically, by designing the clamping rod 130 to include a pressing rod 131, a main rod 132, and a power rod 133, and setting both the first and second included angles greater than 90°, the mechanical structure of the rod is optimized. This design makes the clamping rod 130 more in line with the lever principle during rotation, and the input force of the power assembly 110 can be efficiently transmitted to the pressing end, improving the uniformity and reliability of the clamping force. At the same time, the included angle greater than 90° ensures that the clamping rod 130 can be sufficiently moved away from the cylinder head cover 2000 in the released position, further avoiding obstruction.

[0033] It should be noted here that, for example Figure 4 As shown, the extension direction of the main rod 132 is the extension direction of line L1, the extension direction of the pressing rod 131 is the extension direction of line L2, the extension direction of the power rod 133 is the extension direction of line L3, and the extension direction of the rotating arm 140 is the extension direction of line L4. The first included angle is the angle α1 between line L1 and line L2, the second included angle is the angle α2 between line L1 and line L3, and the third included angle is the angle α3 between line L1 and line L4.

[0034] In some embodiments of this application, the extending direction of the rotating arm 140 and the extending direction of the main body rod 132 have a third included angle, which is greater than 90°.

[0035] Specifically, by setting a third included angle between the rotating arm 140 and the main rod 132 greater than 90°, the motion trajectory of the lever mechanism is further optimized. This angle design enhances the leverage ratio of the rotating arm 140 during the clamping and releasing processes, making the rotation of the clamping rod 130 smoother and improving the overall mechanical efficiency and stability of the device.

[0036] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the power assembly 110 includes a cylinder 111 and a movable frame 112. The telescopic rod of the cylinder 111 can extend and retract vertically. The upper end of the movable frame 112 is connected to the telescopic rod of the cylinder 111 to reciprocate in the vertical direction, and the lower part of the movable frame 112 is pivotally connected to the second end 20. When the clamping rod 130 is in the released position, the height of the pivot connection between the lower part of the movable frame 112 and the second end 20 is lower than the height of the pivot connection between the rotating arm 140 and the hinge support 120.

[0037] Specifically, the power assembly 110 employs a combination of cylinder 111 and movable frame 112, providing a stable and controllable power source. The lower part of the movable frame 112 is pivotally connected to the second end 20. Therefore, when the clamping rod 130 is in the released position, the connection point between the movable frame 112 and the second end 20 is relatively low, allowing the clamping rod 130 to rotate from the clamping position to the released position with a larger rotation angle. This ensures that the clamping rod 130 can fully rotate to the released position, preventing any part from obstructing the cylinder head cover 2000.

[0038] In some embodiments of this application, such as Figure 1 , Figure 2 and Figure 5 As shown, the clamping device 100 also includes a pressing component 150, which is detachably disposed at the first end 10.

[0039] Specifically, by providing a detachable pressing component 150, the clamping device 100 can adapt to cylinder head covers 2000 of different shapes or sizes. When the cylinder head cover model changes or the pressing component 150 wears out, it can be quickly replaced, reducing maintenance costs and time, and improving the versatility and flexibility of the structure.

[0040] In some embodiments of this application, such as Figure 2 and Figure 3 As shown, the first end 10 has an assembly groove 134 on the side facing the cylinder head cover 2000, and the pressing component 150 is detachably mounted to the assembly groove 134.

[0041] Specifically, the mounting groove 134 makes the installation of the pressing component 150 more secure and convenient. The pressing component 150 is connected to the first end 10 through the mounting groove 134, ensuring the strength and precision of the connection, avoiding loosening or displacement during use, and simplifying the disassembly process for easy daily maintenance.

[0042] In some embodiments of this application, such as Figure 1As shown, the first end 10 has a first through hole through the assembly groove 134. The first through hole passes through the assembly groove 134 and extends toward the main body rod 132. The pressing component 150 has a second through hole. The pressing device 100 also includes a fixing bolt 160. The fixing bolt 160 passes through the first through hole and the second through hole in sequence to connect the pressing component 150 to the first end 10.

[0043] Specifically, the pressing assembly 150 and the first end 10 are connected by fixing bolts 160, providing a robust and detachable connection. This design ensures that the pressing assembly 150 will not fall off during the pressing process, while allowing for quick replacement. The use of fixing bolts 160 enhances the reliability of the structure and is suitable for high-frequency processing environments. Furthermore, to accommodate different surface shapes of the cylinder head cover 2000, connecting the pressing assembly 150 and the first end 10 by fixing bolts 160 allows the pressing assembly 150 to rotate a certain angle within the mounting groove 134 for fine-tuning. Thus, when the pressing assembly 150 abuts against the surface of the cylinder head cover 2000, its position on the cylinder head cover 2000 can be finely adjusted by rotation, ensuring that the pressing assembly 150 can stably press against the cylinder head cover 2000.

[0044] In some embodiments of this application, such as Figure 1 As shown, a through hole is provided on the surface of the first end 10 away from the cylinder head cover 2000. The clamping device 100 also includes a set screw 170, which abuts against the fixing bolt 160 through the through hole.

[0045] Specifically, the first through hole passes through the assembly groove 134 and extends toward the main body rod 132. The through hole and the extended position of the first through hole are connected. The set screw 170 passes through the through hole and abuts against the bolt 160 in the first through hole. The set screw 170 is designed to prevent the fixing bolt 160 from loosening under vibration or frequent operation. By abutting the fixing bolt 160 with the set screw 170, the anti-loosening ability of the connection is increased, the safety and stability of the device are improved, and the maintenance requirements are reduced.

[0046] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the pressing assembly 150 includes a rotating base 151 and two pressing blocks 152. The rotating base 151 has a second through hole, and there is a gap between the rotating base 151 and the inner wall of the mounting groove 134. The gap is as follows: Figure 3 As shown in D1. Two pressing blocks 152 are spaced apart from the rotating seat 151 so as to abut against the cylinder head cover 2000 when the pressing rod 130 is in the pressing position.

[0047] Specifically, the pressing assembly 150 employs a design of a rotating base 151 and two pressing blocks 152, enabling it to adapt to the surface contours of the cylinder head cover 2000. The gap between the rotating base 151 and the mounting groove 134 allows for slight rotation, ensuring uniform contact between the pressing blocks 152 and the surface of the cylinder head cover 2000, avoiding localized stress concentration, protecting the cylinder head cover surface from damage, and providing a balanced clamping force. Furthermore, the rotating base 151 can rotate to adapt to different surface shapes of the cylinder head cover 2000. Even if one pressing block 152 is in contact with the surface of the cylinder head cover 2000 while the other is not, the rotating base 151 can rotate to bring the pressing block 152 that is not in contact with the surface of the cylinder head cover 2000 into contact with the surface through the rotation of the rotating base 151. This provides stable pressing of the cylinder head cover 2000.

[0048] The second aspect of this application provides a cylinder head cover clamp 1000, such as Figure 1 As shown, the cylinder head cover clamp 1000 includes a base 200 and a clamping device 100. The base 200 can support the cylinder head cover 2000. The clamping device 100 is the clamping device 100 of the first aspect embodiment described above. Both clamping devices 100 are disposed on the base 200, and the two clamping devices 100 are respectively located on both sides of the cylinder head cover 2000.

[0049] Specifically, the cylinder head cover fixture 1000 uses two clamping devices 100 to clamp the cylinder head cover 2000 from both sides, providing symmetrical and balanced clamping forces to ensure the cylinder head cover 2000 remains stable during processing and prevents displacement or vibration. This design combines all the advantages of the aforementioned clamping devices 100, achieving an efficient, safe, and reliable fixation solution for the cylinder head cover 2000, significantly improving processing quality and efficiency.

[0050] This application, through the design of the aforementioned lever clamping mechanism, solves the problems of clamping devices obstructing the cylinder head cover, inconvenient handling, and easy collision in the prior art, thus achieving fast and safe cylinder head cover processing operations. At the same time, the modular and detachable design improves the adaptability and maintainability of the device.

[0051] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the application to other occasions without modification, should all be considered within the scope of protection of this application.

Claims

1. A clamping device, characterized in that, The clamping device (100) is used to clamp the cylinder head cover (2000) placed on the base (200) of the cylinder head cover clamp (1000). The clamping device (100) includes a power assembly (110), a hinge support (120), a clamping rod (130), and a rotating arm (140). The power assembly (110) and the hinge support (120) are both disposed on the base (200). The second end (20) of the clamping rod (130) is pivotally connected to the power assembly (110). The two ends of the rotating arm (140) are pivotally connected to the middle of the hinge support (120) and the clamping rod (130), respectively. The power assembly (110) can provide power to the clamping rod (130) so that the clamping rod (130) rotates around the hinge support (120) between the clamping position and the loosening position. When the clamping rod (130) rotates to the loosened position, the projections of the clamping rod (130) and the cylinder head cover (2000) on the horizontal plane do not coincide; when the clamping rod (130) rotates to the clamping position, the first end (10) of the clamping rod (130) abuts against the surface of the cylinder head cover (2000).

2. The clamping device according to claim 1, characterized in that, The hinge support (120) is located between the power assembly (110) and the cylinder head cover (2000). The clamping rod (130) includes a pressing rod (131), a main rod (132), and a power rod (133) connected in sequence. The pressing rod (131) has a first end (10), and the power rod (133) has a second end (20). The pressing rod (131) extends toward the cylinder head cover (2000), and there is a first angle between the extension direction of the pressing rod (131) and the extension direction of the main rod (132). The power rod (133) extends toward the power assembly (110), and there is a second angle between the extension direction of the power rod (133) and the extension direction of the main rod (132). Both the first angle and the second angle are greater than 90°.

3. The clamping device according to claim 2, characterized in that, The extension direction of the rotating arm (140) has a third included angle with the extension direction of the main rod (132), the third included angle being greater than 90°.

4. The clamping device according to claim 3, characterized in that, The power assembly (110) includes: Cylinder (111), wherein the telescopic rod of cylinder (111) can extend and retract in the vertical direction; The movable frame (112) is connected at its upper end to the telescopic rod of the cylinder (111) to reciprocate in the up and down direction, and at its lower end to the second end (20). When the clamping rod (130) is in the loosened position, the height of the pivot connection between the lower part of the movable frame (112) and the second end (20) is lower than the height of the pivot connection between the rotating arm (140) and the hinge support (120).

5. The clamping device according to claim 3, characterized in that, The clamping device (100) further includes: Pressing assembly (150), which is detachably disposed to the first end (10).

6. The clamping device according to claim 5, characterized in that, The first end (10) has an assembly groove (134) on the side facing the cylinder head cover (2000), and the pressing component (150) is detachably disposed to the assembly groove (134).

7. The clamping device according to claim 6, characterized in that, The first end (10) has a first through hole penetrating the assembly groove (134), the pressing component (150) has a second through hole, and the pressing device (100) further includes: A fixing bolt (160) passes through the first through hole and the second through hole in sequence to connect the pressing assembly (150) to the first end (10).

8. The clamping device according to claim 7, characterized in that, The first end (10) has a through hole on its surface opposite to the cylinder head cover (2000), and the clamping device (100) further includes: A set screw (170) abuts against the fixing bolt (160) through the through hole.

9. The clamping device according to claim 8, characterized in that, The pressing component (150) includes: Rotary seat (151), the rotating seat (151) is provided with the second through hole, and there is a gap between the rotating seat (151) and the inner wall of the assembly groove (134); Two pressing blocks (152) are spaced apart from the rotating seat (151) to abut against the cylinder head cover (2000) when the pressing rod (130) is in the pressing position.

10. A cylinder head cover clamp, characterized in that, include: A base (200) that can support the cylinder head cover (2000); Two clamping devices (100) are provided on the base (200) according to any one of claims 1-9. The two clamping devices (100) are respectively located on both sides of the cylinder head cover (2000).

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