Loading device for main bearing cap bolt

Abstract

The invention discloses a main bearing cap bolt loading device, and relates to the technical field of engine machining. The locking frame is arranged on the supporting frame, and a rotatable clamping block is arranged on the locking frame; the two attaching plates are parallel to each other and located on the two sides of the locking frame respectively, and the embedding grooves in the attaching plates correspond to the clamping blocks on the locking frame. According to the main bearing cover bolt loading device, the supporting frame is adopted as a bearing body of seven sets of bolts, the seven sets of bolts can be installed on a main bearing cover at the same time so as to reduce repeated operation of a mechanical arm, and therefore the problem that when existing main bearing cover bolt loading equipment is used, the bolts cannot be loaded easily is effectively solved. The technical problems that in the prior art, the installation time is too long, and the stability is poor are solved, rapid positioning of the bolt is achieved, meanwhile, the working efficiency of the mechanical arm can be improved, and the bolt installation stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine processing, and particularly relates to a loading device for main bearing cap bolts. Background Art

[0002] When installing a bearing cap on an engine block, it is necessary to first cover the bearing cap on the engine block and then use bolts for reinforcement. The installation of bolts must strictly follow the specifications to ensure sealing and structural strength. The steps include: cleaning the contact surface and bolts, pre-coating lubricant to reduce friction, initially assembling the bolts in a symmetrical order, gradually tightening them in 2 - 3 steps to the standard torque, and finally rechecking the torque.

[0003] However, during the implementation of the above technical solution, it is found that there are at least the following technical problems:

[0004] Long installation time and poor stability: In the existing main bearing cap bolt installation equipment, the equipment relies on the operation of a robotic arm. The existing robotic arm can only grasp and install 2 bolts each time, while the main bearing cap generally has 7 groups of bolts. The robotic arm needs to operate in a cycle 7 times to complete the installation. The process is cumbersome, greatly prolonging the installation time, hindering the operation of the production line, and highlighting the adverse impact of the limitation of the number of single operations of the robotic arm on production efficiency.

[0005] During installation, it is necessary to accurately position the main bearing cap bolts and bolt holes, but it is difficult to ensure accurate positioning every time in the existing technology. Once there is a deviation, uneven stress will be generated when tightening the bolts, resulting in the bolts slipping, breaking, or the main bearing cap deforming and cracking, damaging the equipment parts, increasing costs, and even causing the production line to stagnate, reflecting the serious consequences brought by insufficient positioning accuracy. Secondly, under long-term repeated operation, the mechanical structure of the equipment is prone to wear and deviation accumulation. The bearings and gears of the robotic arm joints wear, and the transmission chains and lead screws deform, resulting in a decrease in positioning accuracy. To maintain the normal operation of the equipment, frequent calibration and maintenance are required. The operation is cumbersome, consuming manpower and material resources, prolonging the downtime, and interfering with the continuity of production, reflecting the interference of mechanical structure wear and deviation accumulation on the stable operation of the equipment. For this reason, we propose a loading device for main bearing cap bolts. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present invention provides a loading device for main bearing cap bolts, which solves the technical problems of long installation time and poor stability when the existing main bearing cap bolt loading equipment is in use.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present invention is realized through the following technical solutions:

[0010] A loading device for the bolts of the main bearing cover, the loading device comprising:

[0011] A support frame;

[0012] A central rod, which is arranged on the support frame, and a rotatable chuck is arranged on the central rod;

[0013] Two mutually parallel fitting plates, and the two fitting plates are respectively located on both sides of the locking frame, and the embedding grooves on the fitting plates correspond to the chucks on the central rod;

[0014] Wherein, when the chuck is in contact with the fitting plate, the fitting plate is located at the opening of the embedding groove, restricting the movement range of the bearing cover bolts in the embedding groove.

[0015] Preferably, the chuck is driven to rotate by a driving mechanism on the support frame, the driving mechanism includes a movable rod slidably connected to the outside of the central rod, and a limit pin on the movable rod is inserted into a strip-shaped groove on the surface of the chuck;

[0016] Wherein, when the movable rod moves, the chuck rotates under the traction of the limit pin, and the limit pin slides in the strip-shaped groove.

[0017] Preferably, a toothed plate is connected to the end of the movable rod, and the toothed plate corresponds to a motor on the support frame, and the motor meshes with the toothed plate through a gear thereon; when the gear rotates, the movable rod can be driven to move along its length direction.

[0018] Preferably, the bearing cover bolts are composed of upper, middle and lower parts. The upper part is a bolt head, the middle part is a middle screw rod, and the lower part is a lower screw rod. Among them, both the middle screw rod and the lower screw rod are cylindrical, and the outer diameter of the lower screw rod is larger than the outer diameter of the middle screw rod; the inner diameter and length of the embedding groove are the same as the outer diameter and length of the middle screw rod.

[0019] Preferably, a stopper is connected to each end of the chuck, and the position of the chuck end corresponding to the stopper is rounded. When the chuck rotates, the rounded part on its outside does not contact the fitting plate.

[0020] Preferably, a central rotating shaft is inserted into the fitting plate, and a flipping mechanism is connected to the end of the central rotating shaft, so that during the movement of the fitting plate, the side with the embedding groove can be flipped upwards.

[0021] Preferably, the flipping mechanism includes a connecting rod connected to the end of the central rotating shaft, and the connecting rod is in a "Z" shape and corresponds to a rotation assisting member on the support frame;

[0022] Wherein, the rotation assisting member includes two mutually parallel side plates, a strip-shaped flat groove is opened on the outside of one side plate; a "Z" shaped steering groove is opened on the outside of the other side plate;

[0023] Both ends of the connecting rod move along the flat groove and the steering groove respectively.

[0024] Preferably, when one end of the connecting rod slides horizontally along the flat groove, the other end rotates around the central rotating shaft under the guidance of the steering groove; and when one end of the connecting rod moves to the end of the flat groove, the side of the fitting plate with the embedding groove faces upward.

[0025] Preferably, the fitting plate is connected to the air cylinder on the support frame and can move closer to or away from the central rod under the drive of the air cylinder.

[0026] Preferably, a notch is formed on the side of the fitting plate facing the air cylinder, and the central rotating shaft passes through the notch. The end of the air cylinder corresponds to the notch position of the fitting plate and is hinged to the central rotating shaft in the notch.

[0027] (III) Advantageous Effects

[0028] 1. Since the support frame is used as the carrier of the seven groups of bolts, the seven groups can be installed on the main bearing cover at the same time to reduce the repeated operation of the robotic arm. Moreover, the robotic arm only needs to position one of the bolts and can install the remaining bolts according to the positions of the bolt holes on the main bearing cover. Therefore, it effectively solves the technical problems of long installation time and poor stability of the existing main bearing cover bolt loading equipment during use, and thus realizes the rapid positioning of the bolts. At the same time, it can also improve the working efficiency of the robotic arm, thereby improving the stability of bolt installation.

[0029] 2. Since the rotatable block is used as the bolt limiting structure, seven bolts can be locked simultaneously to prevent the bolts from shaking or shifting during installation, thereby improving the stability and accuracy of bolt installation.

[0030] 3. By using the air cylinder to drive the fitting plate to move reciprocally, the main bearing cover bolts are pushed in the direction of the main bearing cover. At the same time, when the fitting plate moves, the interaction between the outer connecting rod and the rotation assisting part makes the fitting plate turn upward, which is convenient for installing the main bearing cover bolts on the fitting plate, reduces the feeding difficulty, and further improves the installation efficiency of the main bearing cover bolts to avoid deviation or detachment of the main bearing cover bolts during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and implement it according to the content of the description, the following takes the preferred embodiment of the present invention and combines with the drawings to describe in detail as follows.

[0032] Figure 1 It is the overall structure diagram of the embodiment of the present invention;

[0033] Figure 2 It is an exploded view of the overall structure in the embodiment of the present invention;

[0034] Figure 3 It is an exploded view of the locking frame in the embodiment of the present invention;

[0035] Figure 4 It is a partial view of the locking frame in the embodiment of the present invention;

[0036] Figure 5 It is one of the schematic diagrams of the flipping state of the fitting plate in the embodiment of the present invention;

[0037] Figure 6 It is another schematic diagram of the flipping state of the fitting plate in the embodiment of the present invention;

[0038] Figure 7 It is yet another schematic diagram of the flipping state of the fitting plate in the embodiment of the present invention;

[0039] Figure 8 It is a top view of the clamping block in the embodiment of the present invention;

[0040] Figure 9 It is a working state diagram of the rotation assisting member in the embodiment of the present invention.

[0041] Legend Explanation:

[0042] 1. Support frame;

[0043] 2. Locking frame; 21. Central rod; 22. Connecting seat; 23. Clamping block; 231. Rotating plate; 232. Central cylinder; 233. Strip-shaped groove; 24. Movable rod; 25. Tooth plate; 26. Limit pin; 27. Motor; 28. Gear;

[0044] 3. Limit assembly; 31. Fitting plate; 32. Central rotating shaft; 33. Cylinder; 34. Connecting rod; 35. End cover;

[0045] 4. Rotation assisting member; 41. Side plate; 42. Flat groove; 43. Steering groove. Detailed implementation manners

[0046] Embodiments of the present application provide a loading device for main bearing cap bolts. This loading device effectively solves the technical problems of long installation time and poor stability in the existing main bearing cap bolt loading equipment. Since the support frame is used as the carrier for seven groups of bolts, seven groups of bolts can be installed on the main bearing cap simultaneously, reducing the repetitive operations of the robotic arm. Moreover, the robotic arm only needs to position one of the bolts and can install the remaining bolts according to the positions of the bolt holes on the main bearing cap, thus achieving rapid positioning of the bolts. At the same time, it can also improve the working efficiency of the robotic arm, thereby enhancing the stability of bolt installation. Secondly, by using a cylinder to drive the fitting plate to reciprocate, the main bearing cap bolts are pushed in the direction of the main bearing cap. Meanwhile, when the fitting plate moves, the interaction between the outer connecting rod of the fitting plate and the rotation auxiliary component causes the fitting plate to flip upward, facilitating the installation of the main bearing cap bolts onto the fitting plate and reducing the feeding difficulty, thereby further improving the installation efficiency of the main bearing cap bolts and avoiding deviations or detachment during the installation of the main bearing cap bolts.

[0047] Embodiment 1

[0048] The technical solution in the embodiments of the present application effectively solves the technical problems of long installation time and poor stability in the existing main bearing cap bolt loading equipment. The general idea is as follows:

[0049] In view of the problems existing in the prior art, the present invention provides a loading device for main bearing cap bolts. This loading device is mainly divided into three parts, namely, the support frame 1, the fitting plate 31, and the locking frame 2. The bearing cap bolts are composed of three parts: the upper part is the bolt head, the middle part is the middle screw rod, and the lower part is the lower screw rod. Both the middle screw rod and the lower screw rod are cylindrical, and the outer diameter of the lower screw rod is larger than that of the middle screw rod. The inner diameter and length of the embedding groove are the same as the outer diameter and length of the middle screw rod. The specific structure is as follows:

[0050] The support frame 1 adopts a rectangular frame structure, as Figure 1 shown, which is convenient for production and assembly and can also cooperate with the main bearing cap.

[0051] The fitting plate 31 (a part of the limiting component 3). In order to cooperate with seven groups of bolts, two mutually parallel fitting plates 31 are designed. The fitting plate 31 has an embedding groove (in order to display the installation position of the bolt and also to fix the bolt). The inner diameter and length of the embedding groove are the same as the outer diameter and length of the middle screw rod, as Figure 9 shown in (c) of

[0052] Locking frame 2 mainly consists of a central rod 21 (between two fitting plates 31) arranged on the support frame 1 and a rotatable clamping block 23 located on the central rod 21. In this way, when the clamping block 23 rotates, it can limit the bolts (embedded in the grooves) on the fitting plates 31. As shown in Figure 6 and Figure 7 shown, this can ensure that the bolts will not fall off or shift during installation, so as to ensure the corresponding relationship between the bolts and the bolt holes on the main bearing cover. The end of the central rod 21 is connected with a connecting seat 22, and it is connected to the support frame 1 through the connecting seat 22, as shown in Figure 1 shown. The clamping block 23 includes a rotating plate 231, and a cylindrical central cylinder 232 is connected to the center of the rotating plate 231. In this way, when the bolt is connected to the central cylinder 232, the rotating plate 231 can still rotate.

[0053] In order to enable the clamping block 23 on the locking frame 2 to rotate, a driving mechanism is installed on the support frame 1, and the clamping block 23 is driven to rotate by this driving mechanism. The driving mechanism specifically includes one (or two) movable rods 24 connected to the outside of the central rod 21, and they are connected by a slide rail. The limit pin 26 on the movable rod 24 is inserted into the strip-shaped groove 233 on the surface of the clamping block 23, as shown in Figure 4 shown. In this way, when the movable rod 24 moves, the clamping block 23 can be rotated by the traction of the limit pin 26, as shown in Figure 6 and Figure 7 shown.

[0054] As shown in Figure 6 shown, when the clamping block 23 is in contact with the outside of the fitting plate 31 (i.e., they are perpendicular to each other), at this time, the stop block at the end of the clamping block 23 is in contact with the fitting plate 31, and the clamping block 23 is located at the opening of the embedding groove, thereby restricting the movement range of the bearing cover bolts in the embedding groove. The bolts in the embedding groove cannot fall off, so that the stability of the bolt installation can be maintained and its falling off can be avoided. In order to avoid "interference" between the clamping block 23 and the central rod 21, as shown in Figure 8 shown, the position of the end of the central rod 21 corresponding to the stop block is rounded, so that when the clamping block 23 rotates, the rounded part on its outside does not contact the central rod 21. Thus, the interference problem is solved.

[0055] The driving of the movable rod 24 can be manually or mechanically controlled. In this application, mechanical control is taken as an example. A toothed plate 25 is connected to the end of the movable rod 24, and this toothed plate 25 corresponds to the motor 27 on the support frame 1, so that the gear 28 on the output shaft of the motor 27 can mesh with the toothed plate 25. After that, only by controlling the power-on of the motor 27, the gear 28 can be rotated. Since the gear 28 and the toothed plate 25 mesh with each other, when the gear 28 rotates, it can drive the movable rod 24 to move along its length direction, as shown in Figures 6 to 7As shown in the figure, the rotation of the clamping block 23 can be controlled, thereby reducing the difficulty of controlling the clamping block 23. This method is just a feasible solution, and other solutions can also be adopted, not limited to this solution.

[0056] During use, it is found that although the clamping block 23 can lock and unlock the bolt, after the bolt is installed, since the fitting plate 31 cannot move, the bolt cannot be removed from the fitting plate 31. For this reason, a plurality of cylinders 33 are installed on the support frame 1, and the cylinders 33 are connected to the fitting plate 31, so that the fitting plate 31 can approach or move away from the direction where the central rod 21 is located under the drive of the cylinders 33.

[0057] In the specific implementation process, the staff places the bearing cover bolt into the embedding groove on the fitting plate 31. After the placement is completed, the motor 27 is controlled to drive the gear 28 to rotate. Since the gear 28 meshes with the toothed plate 25, and the toothed plate 25 is connected to the movable rod 24, when the gear 28 rotates, the movable rod 24 can be driven to move. Also, since the limit pin 26 on the movable rod 24 is inserted into the strip-shaped groove 233 on the surface of the clamping block 23, as Figure 4 shown. Therefore, when the movable rod 24 moves, the clamping block 23 can be driven to rotate by using the limit pin 26. Until the clamping block 23 fits against the outside of the fitting plate 31, as Figure 6 shown. At this time, the clamping block 23 is located at the opening of the embedding groove, thereby restricting the movement range of the bearing cover bolt in the embedding groove. The bolt located in the embedding groove cannot fall off, so that the stability of the bolt during installation can be maintained and it can be prevented from falling off. Thus, the locking of the bolt is completed. Similarly, after the bolt is installed in place, the bolt can be loosened by rotating the clamping block 23 in the reverse direction; then, the cylinder 33 is controlled to drive the fitting plate 31 to contract, thereby releasing the fixation of the device on the bolt.

[0058] Embodiment 2

[0059] Based on Embodiment 1, the embodiment of the present application provides a feasible technical solution to reduce the installation difficulty of the bearing cover bolt. The general idea is as follows:

[0060] Since the bearing cover bolt needs to be installed in the embedding groove of the fitting plate 31 in advance, and the embedding groove faces the central rod 21 (the position between the central rod 21 and the fitting plate 31 is limited), so that the user needs to reach into the inside of the fitting plate 31 during installation. In addition, the fitting plate 31 is inward with the embedding groove, so that it cannot be directly observed during the installation of the bearing cover bolt, so that problems such as falling off and deviation often occur during the installation of the bearing cover bolt.

[0061] To solve the above problems, we use the process of driving the fitting plate 31 to move by the cylinder 33 to adjust the position of the fitting plate 31. The specific structure of the rotation auxiliary member 4 is as follows:

[0062] Insert a central rotating shaft 32 in the middle of the fitting plate 31, and connect a "Z"-shaped connecting rod 34 to each end of the central rotating shaft 32. As Figure 9 shown, and the two ends of the connecting rod 34 respectively correspond to the two side plates 41 on the support frame 1. Since a strip-shaped flat groove 42 is provided outside one of the side plates 41; a "Z"-shaped steering groove 43 is provided outside the other side plate 41.

[0063] The movement of the connecting rod 34 is divided into two segments: One is the sliding segment, that is, the connecting rod 34 moves smoothly and the fitting plate 31 does not rotate; the other is the flipping segment, that is, the connecting rod 34 drives the fitting plate 31 to flip.

[0064] The sliding segment (as shown in (a) to Figure 9 (b) in Figure 9 ), when one end of the connecting rod 34 slides horizontally along the flat groove 42, the other end moves under the guidance of the steering groove 43, as shown in (b) in Figure 9 . At this time, the fitting plate 31 still faces the central rod 21. In order to prevent the connecting rod 34 from separating from the steering groove 43, an end cap 35 is installed at the end of the connecting rod 34 to limit the separation of the connecting rod 34 from the steering groove 43.

[0065] The flipping segment (as shown in (a) to Figure 9 (b) in Figure 9 ), control the fitting plate 31 to continue moving. At this time, one end of the connecting rod 34 still slides horizontally along the flat groove 42, while the other end rotates around the central rotating shaft 32 under the guidance of the steering groove 43; and when one end of the connecting rod 34 moves to the end of the flat groove 42, the side of the fitting plate 31 with the embedding groove faces upward.

[0066] In order to avoid interference when the air cylinder 33 rotates with the fitting plate 31, a corresponding notch is provided on the side of the fitting plate 31 facing the air cylinder 33, and the central rotating shaft 32 in the central rod 21 passes through the notch, and the air cylinder 33 is hinged to the central rotating shaft 32 in the notch, as shown in Figure 1 . In this way, when the fitting plate 31 rotates, the air cylinder 33 can flip through the notch.

[0067] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A loading device for main bearing cap bolts, characterized in that: The loading device comprises: A support frame (1); A central rod (21) is arranged on the support frame (1), and a rotatable clamping block (23) is provided on the central rod (21); Two mutually parallel bonding plates (31), and the two bonding plates (31) are respectively located on both sides of the locking frame (2), and the embedding grooves on the bonding plates (31) correspond to the clamping blocks (23) on the central rod (21); When the clamping block (23) is fitted with the fitting plate (31), the fitting plate (31) is located at the opening of the embedding groove, limiting the range of movement of the bearing cover bolt in the embedding groove.

2. A main bearing cap bolt loading device as claimed in claim 1, characterized in that: The block (23) is driven to rotate by a driving mechanism on the support frame (1), wherein the driving mechanism comprises a movable rod (24) slidably connected to the outside of the center rod (21), and a limit pin (26) on the movable rod (24) is inserted into a strip groove (233) on the surface of the block (23); When the movable rod (24) moves, the clamping block (23) rotates under the traction of the limiting pin (26), and the limiting pin (26) slides in the strip groove (233).

3. A main bearing cap bolt loading device as claimed in claim 2, characterized in that: The end of the movable rod (24) is connected to a toothed plate (25), and the toothed plate (25) corresponds to a motor (27) on the support frame (1). The motor (27) is meshed with the toothed plate (25) via a gear (28) thereon; when the gear (28) rotates, the movable rod (24) can be driven to move along its length direction.

4. A main bearing cap bolt loading device as claimed in claim 2, characterized in that: The bearing cover bolt is divided into three parts: upper, middle and lower. The upper part is the bolt cap, the middle part is the middle screw, and the lower part is the lower screw. The middle screw and the lower screw are both cylindrical, and the outer diameter of the lower screw is larger than the outer diameter of the middle screw. The inner diameter and length of the embedded groove are consistent with the outer diameter and length of the middle screw.

5. A main bearing cap bolt loading device as claimed in claim 4, characterized in that: The two ends of the clamping block (23) are each connected to a stopper, and the ends of the clamping block (23) and the positions corresponding to the stoppers are rounded, so that when the clamping block (23) rotates, the rounded corners on the outside of the clamping block (23) do not contact the bonding plate (31).

6. A main bearing cap bolt loading device according to any one of claims 1 to 5, characterized in that: A central rotating shaft (32) is inserted into the interior of the laminating plate (31), and a turning mechanism is connected to the end of the central rotating shaft (32), so that the side with the embedding groove can turn upward during the movement of the laminating plate (31).

7. A main bearing cap bolt loading device as claimed in claim 6, characterized in that: The turning mechanism comprises a connecting rod (34) connected to the end of the central rotating shaft (32), and the connecting rod (34) is in a "Z" shape and corresponds to the rotating auxiliary member (4) on the supporting frame (1); The rotation auxiliary member (4) comprises two mutually parallel side plates (41), wherein a strip-shaped flat groove (42) is provided on the outside of one of the side plates (41); and a "Z"-shaped steering groove (43) is provided on the outside of the other side plate (41); The two ends of the connecting rod (34) move along the flat groove (42) and the steering groove (43) respectively.

8. A main bearing cap bolt loading device as claimed in claim 7, characterized in that: When one end of the connecting rod (34) slides horizontally along the flat groove (42), the other end rotates around the central shaft (32) under the guidance of the steering groove (43); and when one end of the connecting rod (34) moves to the end of the flat groove (42), the side of the bonding plate (31) with the embedded groove faces upward.

9. A main bearing cap bolt loading device as claimed in claim 8, characterized in that: The laminating plate (31) is connected to a cylinder (33) on the support frame (1) and can move closer to or farther away from the direction of the central rod (21) under the drive of the cylinder (33).

10. A main bearing cap bolt loading device as claimed in claim 9, characterized in that: The laminating plate (31) is provided with a notch on one side facing the cylinder (33), and the central rotating shaft (32) passes through the notch. The end of the cylinder (33) corresponds to the notch position of the laminating plate (31) and is hinged to the central rotating shaft (32) in the notch.

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