Cylinder-driven bolt tightening shaft transverse position compensation device

Abstract

The utility model discloses a bolt tightening shaft transverse position compensation device of pneumatic cylinder drive relates to mechanical assembly technical field, including installation support, the pneumatic cylinder body is installed at the top of installation support, locking screw, locking screw installs the output of pneumatic cylinder body, the outer surface lower part of locking screw is equipped with the gasket of screw thread installation, the top middle part of gasket is equipped with locking groove, the utility model discloses the synergistic effect of pneumatic cylinder body, locking screw, gasket, mounting block and inductive iron sheet has realized the secondary accurate positioning of tightening shaft in X axle direction, effectively solved the tightening accuracy problem of engine assembly because of bolt position deviation, and the pneumatic cylinder body drives gasket transverse telescopic limit, and locking screw realizes position locking, and inductive iron sheet feedback positioning signal makes control system can real -time perception tightening shaft position to adapt bolt deviation, and this design has improved bolt tightening's precision and efficiency significantly.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly technology, specifically to a cylinder-driven bolt tightening shaft lateral position compensation device. Background Technology

[0002] The cylinder head bearing cap is a key component in an engine used to support and fix the crankshaft or camshaft bearings. It is usually made of high-strength cast iron or aluminum alloy, and its structure is mostly a cover plate or bridge-shaped design. Through precision-machined bearing holes and journals, it can effectively reduce rotational friction and ensure the stability of shaft system operation. During assembly, the bearing cap needs to be tightly connected to the cylinder head or cylinder block with multiple special bolts, and the bolts are precisely tightened by a tightening mechanism to ensure that the bearing preload meets the design requirements and avoids bearing wear or abnormal engine vibration due to assembly deviations.

[0003] In the special machine tool for tightening bolts on cylinder head bearing caps, the three yellow bolts on the cylinder head bearing cap were originally in a straight line. Due to the machine model change, one bolt is now offset to the left by 5mm. Originally, the tightening mechanism could tighten the bolt with one horizontal positioning and three vertical positioning. Now, after the machine model change, the original tightening method has become a method that requires two horizontal positioning and three vertical positioning. The original equipment can no longer complete the tightening operation. Utility Model Content

[0004] The purpose of this invention is to provide a cylinder-driven bolt tightening shaft lateral position compensation device to solve the tightening accuracy problem caused by bolt position offset during engine assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cylinder-driven bolt tightening shaft lateral position compensation device, including a mounting bracket;

[0006] A cylinder body, which is mounted on the top of a mounting bracket;

[0007] A locking screw is installed at the output end of the cylinder body. A pad is threaded on the lower part of the outer surface of the locking screw. A locking groove is opened at the middle of the top of the pad. A locking nut is threaded on the upper part of the outer surface of the locking screw.

[0008] The mounting block is installed at the bottom of the mounting bracket, and a sensing iron plate is installed at one end of the mounting block. The sensing iron plate is used for signal feedback of the positioning status.

[0009] Furthermore, two fixing grooves are provided at the bottom of the cylinder body, and two throttle valves are installed on the outer wall of the cylinder body. Air inlet pipes are installed at the top of the two throttle valves, and connectors are installed at the other end of the two air inlet pipes.

[0010] Furthermore, mounting holes are provided on both sides of the outer wall of the mounting block, two connecting grooves are provided at the top center of the mounting block, and a mounting groove is provided at the center of one end of the mounting block. The outer wall of the sensing iron sheet is mounted on the inner wall of the mounting groove.

[0011] Furthermore, the top of the mounting bracket is provided with first fixing holes on both sides, and first bolts are inserted into the two first fixing holes. The first bolts pass through the first fixing holes and are threadedly connected to the fixing grooves. A through hole is provided in the middle of the top of the mounting bracket, and the through hole is located on the same vertical line as the output end of the cylinder body.

[0012] Furthermore, the mounting bracket has second fixing holes on both sides of its bottom end, and a second bolt is inserted into each of the two second fixing holes. The second bolt passes through the second fixing hole and is threaded into the connecting groove.

[0013] Furthermore, the mounting bracket is configured as a Z-shaped structure, the pad is configured as a T-shaped structure, and the pad and the sensing iron sheet do not contact each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) This utility model achieves secondary precise positioning of the tightening shaft in the X-axis direction through the coordinated work of the cylinder body, locking screw, pad, mounting block and sensing iron plate, effectively solving the tightening accuracy problem caused by bolt position offset in engine assembly. The cylinder body drives the pad to extend and retract laterally to limit the movement, the locking screw achieves position locking, and the sensing iron plate provides feedback positioning signal, so that the control system can perceive the position of the tightening shaft in real time and thus adapt to bolt offset. This design significantly improves the accuracy and efficiency of bolt tightening.

[0016] (2) This utility model achieves a stable connection between the mounting bracket, the cylinder body, and the mounting block through the coordinated work of the first fixing hole, the first bolt, the second fixing hole, and the second bolt, ensuring the structural stability and reliability of the entire device. The cylinder body is firmly installed on the top of the mounting bracket through the cooperation of the first fixing hole and the first bolt, preventing the cylinder body from loosening or shifting during operation. The mounting block is firmly connected to the bottom of the mounting bracket through the cooperation of the second fixing hole and the second bolt, ensuring that the sensing iron plate on the mounting block can accurately feed back the positioning status signal. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 A schematic diagram of the cylinder body is provided for an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the pad block is provided for an embodiment of this utility model;

[0021] Figure 4 An exploded view of the overall structure provided for an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Mounting bracket; 2. Cylinder body; 21. Fixing groove; 22. Throttle valve; 23. Air inlet pipe; 24. Connector; 3. Locking screw; 4. Spacer; 5. Mounting block; 51. Mounting hole; 52. Connecting groove; 53. Mounting groove; 6. Induction iron plate; 7. Locking nut; 8. Locking groove; 9. First fixing hole; 10. First bolt; 11. Through hole; 12. Second fixing hole; 13. Second bolt. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] Example 1:

[0027] This utility model provides a cylinder-driven bolt tightening shaft lateral position compensation device, including a mounting bracket 1;

[0028] Cylinder body 2, which is mounted on the top of mounting bracket 1;

[0029] Locking screw 3 is installed at the output end of cylinder body 2. A pad 4 is threaded on the lower part of the outer surface of locking screw 3. A locking groove 8 is opened in the middle of the top of pad 4. A locking nut 7 is threaded on the upper part of the outer surface of locking screw 3. The position of pad 4 can be further fixed by locking nut 7.

[0030] Mounting block 5 is installed at the bottom of mounting bracket 1. One end of mounting block 5 is equipped with a sensing iron plate 6, which is used for signal feedback of positioning status.

[0031] Two fixing slots 21 are provided at the bottom of the cylinder body 2. Two throttle valves 22 are installed on the outer wall of the cylinder body 2. The throttle valve 22 is a common control element in the cylinder field. Its function is to adjust the intake or exhaust flow of the cylinder, thereby controlling the movement speed of the cylinder. Air inlet pipes 23 are installed at the top of the two throttle valves 22. Connectors 24 are installed at the other end of the two air inlet pipes 23. The cylinder is connected to an external air source through these components.

[0032] Mounting bracket 1 is designed with a Z-shaped structure, which provides stable support and a reasonable spatial layout for the entire device. Pad 4 is designed with a T-shaped structure, which allows it to better cooperate with other components to achieve specific functions. Furthermore, pad 4 and sensing iron plate 6 do not come into contact with each other, avoiding mutual interference and ensuring the accuracy of signal feedback and the stability of the tightening process.

[0033] Working principle: First, the cylinder body 2 is securely installed on the top of the mounting bracket 1. Then, the locking screw 3 is used to install the pad 4 on the output end of the cylinder body 2, and the mounting block 5 is installed on the bottom end of the mounting bracket 1. When the cylinder body 2 is working, it receives external air power through the air inlet pipe 23 and connector 24, and regulates the airflow with the help of the throttle valve 22, thereby driving the output end to move the locking screw 3 and the pad 4, realizing lateral extension and limit, ensuring that the tightening shaft can accurately reach the target position. During this process, the locking screw 3 is used to lock the position, preventing the pad 4 from shifting during tightening, and ensuring tightening. To ensure stability, when the tightening shaft reaches the target position, the sensing iron plate 6 will feed back the positioning status signal to the control system. The control system determines whether the tightening shaft has accurately reached the target position based on the received signal and controls the tightening mechanism to perform the bolt tightening operation. This series of operations achieves secondary precise positioning of the tightening shaft in the X-axis direction, effectively solving the tightening accuracy problem caused by bolt position deviation in engine assembly, significantly improving the accuracy and efficiency of bolt tightening, reducing the risk of bearing wear and abnormal engine vibration caused by assembly deviation, and improving the overall performance and reliability of the engine.

[0034] Example 2:

[0035] This embodiment is basically the same as the previous embodiment, except that mounting holes 51 are provided on both sides of the outer wall of the mounting block 5. The mounting holes 51 provide additional connection points for the mounting block 5 to other external devices or structures, allowing for the selection of appropriate connection methods according to different installation scenarios, thus increasing installation flexibility. Two connecting grooves 52 are provided at the top center of the mounting block 5. The function of the connecting grooves 52 is to securely connect with the mounting bracket 1. A mounting groove 53 is provided at the center of one end of the mounting block 5. The shape of the mounting groove 53 is adapted to the outer wall of the induction iron sheet 6, and its size is designed according to the specifications of the induction iron sheet 6. The outer wall of the induction iron sheet 6 is installed on the inner wall of the mounting groove 53.

[0036] The top of the mounting bracket 1 has two first fixing holes 9 on both sides. A first bolt 10 is inserted into each of the two first fixing holes 9. The first bolt 10 is a standard bolt, and its thread specification matches the thread in the fixing groove 21. The first bolt 10 passes through the first fixing hole 9 and is threadedly connected to the fixing groove 21. A through hole 11 is provided in the middle of the top of the mounting bracket 1. The through hole 11 is located on the same vertical line as the output end of the cylinder body 2, providing a channel for the movement of the output end of the cylinder body 2 and ensuring the linear transmission of the driving force of the cylinder body 2.

[0037] The mounting bracket 1 has two second fixing holes 12 on both sides of its bottom end. Two second bolts 13 are inserted into the two second fixing holes 12. The second bolts 13 are standard bolts with thread specifications that are compatible with the threads in the connecting groove 52. The second bolts 13 pass through the second fixing holes 12 and are threadedly connected to the connecting groove 52.

[0038] Working principle: First, align the fixing groove 21 on the cylinder body 2 with the first fixing hole 9 on the mounting bracket 1, and use the first bolt 10 to securely connect them, ensuring that the cylinder body 2 is installed on the top of the mounting bracket 1. The mounting block 5 can be further fixed through the mounting holes 51 on both sides of its outer wall. Then, tighten the bolts on the cylinder head bearing cover to install the compensation device on a special machine tool. At the same time, align the connecting groove 52 at the top of the mounting block 5 with the second fixing hole 12 at the bottom of the mounting bracket 1, and use the second bolt 13 to thread it into the connecting groove 52, thereby securing the mounting block 5 at the bottom of the mounting bracket 1, forming a detachable and stable structure that facilitates quick assembly and adjustment. This connection method is simple in structure and easy to operate, and can effectively withstand the force and vibration generated during the tightening process, ensuring long-term stable operation of the device. Through the coordinated fixing of the cylinder body 2 and the mounting block 5, the device significantly improves the adaptability and reliability of bolt tightening and reduces the risk of engine failure caused by assembly deviation.

[0039] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cylinder-driven bolt tightening shaft lateral position compensation device, characterized in that, include: Mounting bracket (1); Cylinder body (2), the cylinder body (2) is mounted on the top of the mounting bracket (1); A locking screw (3) is installed at the output end of the cylinder body (2). A pad (4) is threaded on the lower part of the outer surface of the locking screw (3). A locking groove (8) is opened at the middle of the top of the pad (4). A locking nut (7) is threaded on the upper part of the outer surface of the locking screw (3). Mounting block (5) is installed at the bottom of mounting bracket (1). One end of mounting block (5) is equipped with a sensing iron plate (6), which is used for signal feedback of positioning status.

2. The cylinder-driven bolt tightening shaft lateral position compensation device according to claim 1, characterized in that, The cylinder body (2) has two fixed grooves (21) at the bottom end. Two throttle valves (22) are installed on the outer wall of the cylinder body (2). Air inlet pipes (23) are installed at the top of the two throttle valves (22). Connectors (24) are installed at the other end of the two air inlet pipes (23).

3. The cylinder-driven bolt tightening shaft lateral position compensation device according to claim 1, characterized in that, The mounting block (5) has mounting holes (51) on both sides of its outer wall. The mounting block (5) has two connecting grooves (52) at the top center. The mounting block (5) has a mounting groove (53) at one end center. The outer wall of the sensing iron sheet (6) is mounted on the inner wall of the mounting groove (53).

4. The cylinder-driven bolt tightening shaft lateral position compensation device according to claim 2, characterized in that, The mounting bracket (1) has first fixing holes (9) on both sides of its top end. First bolts (10) are inserted into the two first fixing holes (9). The first bolts (10) pass through the first fixing holes (9) and are threaded into the fixing groove (21). The mounting bracket (1) has a through hole (11) in the middle of its top end. The through hole (11) and the output end of the cylinder body (2) are on the same vertical line.

5. The cylinder-driven bolt tightening shaft lateral position compensation device according to claim 3, characterized in that, The mounting bracket (1) has two second fixing holes (12) on both sides of its bottom end. Two second bolts (13) are inserted into the two second fixing holes (12). The second bolts (13) pass through the second fixing holes (12) and are threaded into the connecting groove (52).

6. The cylinder-driven bolt tightening shaft lateral position compensation device according to claim 1, characterized in that, The mounting bracket (1) is configured as a Z-shaped structure, the pad (4) is configured as a T-shaped structure, and the pad (4) and the sensing iron plate (6) do not contact each other.

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